staging: dgap: adds dgap driver to staging
authorScott_Kilau@digi.com <Scott_Kilau@digi.com>
Thu, 22 Aug 2013 01:48:31 +0000 (21:48 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 22 Aug 2013 17:10:00 +0000 (10:10 -0700)
This patch adds the dgap driver to staging. This is
a TTY serial port driver for the EPCA PCI based
product line by Digi International <www.digi.com>.

Signed-off-by: Lidza Louina <lidza.louina@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
25 files changed:
drivers/staging/dgap/Kconfig [new file with mode: 0644]
drivers/staging/dgap/Makefile [new file with mode: 0644]
drivers/staging/dgap/dgap_conf.h [new file with mode: 0644]
drivers/staging/dgap/dgap_downld.h [new file with mode: 0644]
drivers/staging/dgap/dgap_driver.c [new file with mode: 0644]
drivers/staging/dgap/dgap_driver.h [new file with mode: 0644]
drivers/staging/dgap/dgap_fep5.c [new file with mode: 0644]
drivers/staging/dgap/dgap_fep5.h [new file with mode: 0644]
drivers/staging/dgap/dgap_kcompat.h [new file with mode: 0644]
drivers/staging/dgap/dgap_mgmt.c [new file with mode: 0644]
drivers/staging/dgap/dgap_mgmt.h [new file with mode: 0644]
drivers/staging/dgap/dgap_parse.c [new file with mode: 0644]
drivers/staging/dgap/dgap_parse.h [new file with mode: 0644]
drivers/staging/dgap/dgap_pci.h [new file with mode: 0644]
drivers/staging/dgap/dgap_proc.c [new file with mode: 0644]
drivers/staging/dgap/dgap_proc.h [new file with mode: 0644]
drivers/staging/dgap/dgap_sysfs.c [new file with mode: 0644]
drivers/staging/dgap/dgap_sysfs.h [new file with mode: 0644]
drivers/staging/dgap/dgap_trace.c [new file with mode: 0644]
drivers/staging/dgap/dgap_trace.h [new file with mode: 0644]
drivers/staging/dgap/dgap_tty.c [new file with mode: 0644]
drivers/staging/dgap/dgap_tty.h [new file with mode: 0644]
drivers/staging/dgap/dgap_types.h [new file with mode: 0644]
drivers/staging/dgap/digi.h [new file with mode: 0644]
drivers/staging/dgap/downld.c [new file with mode: 0644]

diff --git a/drivers/staging/dgap/Kconfig b/drivers/staging/dgap/Kconfig
new file mode 100644 (file)
index 0000000..31f1d75
--- /dev/null
@@ -0,0 +1,6 @@
+config DGAP
+       tristate "Digi EPCA PCI products"
+       default n
+       depends on TTY
+       ---help---
+       Driver for the Digi International EPCA PCI based product line
diff --git a/drivers/staging/dgap/Makefile b/drivers/staging/dgap/Makefile
new file mode 100644 (file)
index 0000000..0aa5cde
--- /dev/null
@@ -0,0 +1,9 @@
+EXTRA_CFLAGS += -DDG_NAME=\"dgap-1.3-16\" -DDG_PART=\"40002347_C\"
+
+obj-$(CONFIG_DGAP) += dgap.o
+
+
+dgap-objs :=   dgap_driver.o   dgap_fep5.o     dgap_mgmt.o \
+               dgap_parse.o    dgap_proc.o     dgap_trace.o \
+               dgap_tty.o      dgap_sysfs.o
+
diff --git a/drivers/staging/dgap/dgap_conf.h b/drivers/staging/dgap/dgap_conf.h
new file mode 100644 (file)
index 0000000..8809701
--- /dev/null
@@ -0,0 +1,290 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *****************************************************************************
+ *
+ *     dgap_conf.h - Header file for installations and parse files.
+ *
+ *     $Id: dgap_conf.h,v 1.1 2009/10/23 14:01:57 markh Exp $
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+#ifndef _DGAP_CONF_H
+#define _DGAP_CONF_H
+
+#define NULLNODE 0             /* header node, not used */
+#define BNODE 1                        /* Board node */
+#define LNODE 2                        /* Line node */
+#define CNODE 3                        /* Concentrator node */
+#define MNODE 4                        /* EBI Module node */
+#define TNODE 5                        /* tty name prefix node */
+#define        CUNODE 6                /* cu name prefix (non-SCO) */
+#define PNODE 7                        /* trans. print prefix node */
+#define JNODE 8                        /* maJor number node */
+#define ANODE 9                        /* altpin */
+#define        TSNODE 10               /* tty structure size */
+#define CSNODE 11              /* channel structure size */
+#define BSNODE 12              /* board structure size */
+#define USNODE 13              /* unit schedule structure size */
+#define FSNODE 14              /* f2200 structure size */
+#define VSNODE 15              /* size of VPIX structures */
+#define INTRNODE 16            /* enable interrupt */
+
+/* Enumeration of tokens */
+#define        BEGIN   1
+#define        END     2
+#define        BOARD   10
+
+#define EPCFS  11 /* start of EPC family definitions */
+#define        ICX             11
+#define        MCX             13
+#define PCX    14
+#define        IEPC    15
+#define        EEPC    16
+#define        MEPC    17
+#define        IPCM    18
+#define        EPCM    19
+#define        MPCM    20
+#define PEPC   21
+#define PPCM   22
+#ifdef CP
+#define ICP     23
+#define ECP     24
+#define MCP     25
+#endif
+#define EPCFE  25 /* end of EPC family definitions */
+#define        PC2E    26
+#define        PC4E    27
+#define        PC4E8K  28
+#define        PC8E    29
+#define        PC8E8K  30
+#define        PC16E   31
+#define MC2E8K  34
+#define MC4E8K  35
+#define MC8E8K  36
+
+#define AVANFS 42      /* start of Avanstar family definitions */
+#define A8P    42
+#define A16P   43
+#define AVANFE 43      /* end of Avanstar family definitions */
+
+#define DA2000FS       44      /* start of AccelePort 2000 family definitions */
+#define DA22           44 /* AccelePort 2002 */
+#define DA24           45 /* AccelePort 2004 */
+#define DA28           46 /* AccelePort 2008 */
+#define DA216          47 /* AccelePort 2016 */
+#define DAR4           48 /* AccelePort RAS 4 port */
+#define DAR8           49 /* AccelePort RAS 8 port */
+#define DDR24          50 /* DataFire RAS 24 port */
+#define DDR30          51 /* DataFire RAS 30 port */
+#define DDR48          52 /* DataFire RAS 48 port */
+#define DDR60          53 /* DataFire RAS 60 port */
+#define DA2000FE       53 /* end of AccelePort 2000/RAS family definitions */
+
+#define PCXRFS 106     /* start of PCXR family definitions */
+#define        APORT4  106
+#define        APORT8  107
+#define PAPORT4 108
+#define PAPORT8 109
+#define APORT4_920I    110
+#define APORT8_920I    111
+#define APORT4_920P    112
+#define APORT8_920P    113
+#define APORT2_920P 114
+#define PCXRFE 117     /* end of PCXR family definitions */
+
+#define        LINE    82
+#ifdef T1
+#define T1M    83
+#define E1M    84
+#endif
+#define        CONC    64
+#define        CX      65
+#define        EPC     66
+#define        MOD     67
+#define        PORTS   68
+#define METHOD 69
+#define CUSTOM 70
+#define BASIC  71
+#define STATUS 72
+#define MODEM  73
+/* The following tokens can appear in multiple places */
+#define        SPEED   74
+#define        NPORTS  75
+#define        ID      76
+#define CABLE  77
+#define CONNECT        78
+#define        IO      79
+#define        MEM     80
+#define DPSZ   81
+
+#define        TTYN    90
+#define        CU      91
+#define        PRINT   92
+#define        XPRINT  93
+#define CMAJOR   94 
+#define ALTPIN  95
+#define STARTO 96
+#define USEINTR  97
+#define PCIINFO  98
+
+#define        TTSIZ   100
+#define        CHSIZ   101
+#define BSSIZ  102
+#define        UNTSIZ  103
+#define        F2SIZ   104
+#define        VPSIZ   105
+
+#define        TOTAL_BOARD     2
+#define        CURRENT_BRD     4
+#define        BOARD_TYPE      6
+#define        IO_ADDRESS      8
+#define        MEM_ADDRESS     10
+
+#define        FIELDS_PER_PAGE 18
+
+#define TB_FIELD       1
+#define CB_FIELD       3
+#define BT_FIELD       5
+#define IO_FIELD       7
+#define ID_FIELD       8
+#define ME_FIELD       9
+#define TTY_FIELD      11
+#define CU_FIELD       13
+#define PR_FIELD       15
+#define MPR_FIELD      17
+
+#define        MAX_FIELD       512
+
+#define        INIT            0
+#define        NITEMS          128
+#define MAX_ITEM       512
+
+#define        DSCRINST        1
+#define        DSCRNUM         3
+#define        ALTPINQ         5
+#define        SSAVE           7
+
+#define        DSCR            "32"
+#define        ONETONINE       "123456789"
+#define        ALL             "1234567890"
+
+
+struct cnode {
+       struct cnode *next;
+       int type;
+       int numbrd;
+
+       union {
+               struct {
+                       char  type;     /* Board Type           */
+                       short port;     /* I/O Address          */
+                       char  *portstr; /* I/O Address in string */
+                       long  addr;     /* Memory Address       */
+                       char  *addrstr; /* Memory Address in string */
+                       long  pcibus;   /* PCI BUS              */
+                       char  *pcibusstr; /* PCI BUS in string */
+                       long  pcislot;  /* PCI SLOT             */
+                       char  *pcislotstr; /* PCI SLOT in string */
+                       char  nport;    /* Number of Ports      */
+                       char  *id;      /* tty id               */
+                       int   start;    /* start of tty counting */
+                       char  *method;  /* Install method       */
+                       char  v_type;
+                       char  v_port;
+                       char  v_addr;
+                       char  v_pcibus;
+                       char  v_pcislot;
+                       char  v_nport;
+                       char  v_id;
+                       char  v_start;
+                       char  v_method;
+                       char  line1;
+                       char  line2;
+                       char  conc1;   /* total concs in line1 */
+                       char  conc2;   /* total concs in line2 */
+                       char  module1; /* total modules for line1 */
+                       char  module2; /* total modules for line2 */
+                       char  *status; /* config status */
+                       char  *dimstatus;        /* Y/N */
+                       int   status_index; /* field pointer */
+               } board;
+
+               struct {
+                       char  *cable;
+                       char  v_cable;
+                       char  speed;
+                       char  v_speed;
+               } line;
+
+               struct {
+                       char  type;
+                       char  *connect;
+                       char  speed;
+                       char  nport;
+                       char  *id;
+                       char  *idstr;
+                       int   start;
+                       char  v_type;
+                       char  v_connect;
+                       char  v_speed;
+                       char  v_nport;
+                       char  v_id;
+                       char  v_start;
+               } conc;
+
+               struct {
+                       char type;
+                       char nport;
+                       char *id;
+                       char *idstr;
+                       int  start;
+                       char v_type;
+                       char v_nport;
+                       char v_id;
+                       char v_start;
+               } module;
+
+               char *ttyname;
+               
+               char *cuname;
+               
+               char *printname;
+
+               int  majornumber;
+
+               int  altpin;
+
+               int  ttysize;
+
+               int  chsize;
+
+               int  bssize;
+
+               int  unsize;
+
+               int  f2size;
+
+               int  vpixsize;
+
+               int  useintr;
+       } u;
+};
+
+#endif
diff --git a/drivers/staging/dgap/dgap_downld.h b/drivers/staging/dgap/dgap_downld.h
new file mode 100644 (file)
index 0000000..f79e65c
--- /dev/null
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *      Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: dgap_downld.h,v 1.1 2009/10/23 14:01:57 markh Exp $
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ *
+ */
+
+/*
+** downld.h 
+**  - describes the interface between the user level download process
+**    and the concentrator download driver.
+*/
+
+#ifndef _DGAP_DOWNLD_H_
+#define _DGAP_DOWNLD_H_
+
+
+struct fepimg {
+    int type;                          /* board type */
+    int        len;                            /* length of image */
+    char fepimage[1];                  /* begining of image */
+};
+
+struct downldio {
+    unsigned int req_type;             /* FEP or concentrator */
+    unsigned int bdid;                 /* opaque board identifier */
+    union {
+       struct downld_t dl;             /* download structure */
+       struct fepimg   fi;             /* fep/bios image structure */
+    } image;
+};
+
+#define DIGI_DLREQ_GET (('d'<<8) | 220)
+#define DIGI_DLREQ_SET (('d'<<8) | 221)
+
+#define DIGI_DL_NUKE    (('d'<<8) | 222) /* Not really a dl request, but
+                                         dangerous enuff to not put in
+                                         digi.h */
+/* Packed bits of intarg for DIGI_DL_NUKE */
+#define DIGI_NUKE_RESET_ALL     (1 << 31)
+#define DIGI_NUKE_INHIBIT_POLLER (1 << 30)
+#define DIGI_NUKE_BRD_NUMB        0x0f
+       
+
+
+#define        DLREQ_BIOS      0
+#define        DLREQ_FEP       1
+#define        DLREQ_CONC      2
+#define        DLREQ_CONFIG    3
+#define DLREQ_DEVCREATE 4
+
+#endif
diff --git a/drivers/staging/dgap/dgap_driver.c b/drivers/staging/dgap/dgap_driver.c
new file mode 100644 (file)
index 0000000..b4f54ef
--- /dev/null
@@ -0,0 +1,1063 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the 
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *     NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE!
+ *
+ *     This is shared code between Digi's CVS archive and the
+ *     Linux Kernel sources.
+ *     Changing the source just for reformatting needlessly breaks
+ *     our CVS diff history.
+ *
+ *     Send any bug fixes/changes to:  Eng.Linux at digi dot com.
+ *     Thank you.
+ *
+ * $Id: dgap_driver.c,v 1.3 2011/06/21 10:35:16 markh Exp $
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>       /* For udelay */
+#include <asm/uaccess.h>       /* For copy_from_user/copy_to_user */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
+#include <linux/sched.h>
+#endif
+
+#include "dgap_driver.h"
+#include "dgap_pci.h"
+#include "dgap_proc.h"
+#include "dgap_fep5.h"
+#include "dgap_tty.h"
+#include "dgap_conf.h"
+#include "dgap_parse.h"
+#include "dgap_mgmt.h"
+#include "dgap_trace.h"
+#include "dgap_sysfs.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Digi International, http://www.digi.com");
+MODULE_DESCRIPTION("Driver for the Digi International EPCA PCI based product line");
+MODULE_SUPPORTED_DEVICE("dgap");
+
+/*
+ * insmod command line overrideable parameters
+ *
+ * NOTE: we use a set of macros to create the variables, which allows
+ * us to specify the variable type, name, initial value, and description.
+ */
+PARM_INT(debug,                0x00,           0644,   "Driver debugging level");
+PARM_INT(rawreadok,    1,              0644,   "Bypass flip buffers on input");
+PARM_INT(trcbuf_size,  0x100000,       0644,   "Debugging trace buffer size.");
+
+
+/**************************************************************************
+ *
+ * protos for this file
+ *
+ */
+
+static int             dgap_start(void);
+static void            dgap_init_globals(void);
+static int             dgap_found_board(struct pci_dev *pdev, int id);
+static void            dgap_cleanup_board(struct board_t *brd);
+static void            dgap_poll_handler(ulong dummy);
+static int             dgap_init_pci(void);
+static int             dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
+static void            dgap_remove_one(struct pci_dev *dev);
+static int             dgap_probe1(struct pci_dev *pdev, int card_type);
+static void            dgap_mbuf(struct board_t *brd, const char *fmt, ...);
+static int             dgap_do_remap(struct board_t *brd);
+static irqreturn_t     dgap_intr(int irq, void *voidbrd);
+
+/* Driver load/unload functions */
+int                    dgap_init_module(void);
+void                   dgap_cleanup_module(void);
+
+module_init(dgap_init_module);
+module_exit(dgap_cleanup_module);
+
+
+/*
+ * File operations permitted on Control/Management major.
+ */
+static struct file_operations DgapBoardFops =
+{
+       .owner          =       THIS_MODULE,
+#ifdef HAVE_UNLOCKED_IOCTL
+        .unlocked_ioctl =      dgap_mgmt_ioctl,
+#else
+        .ioctl:        =       dgap_mgmt_ioctl,
+#endif
+       .open           =       dgap_mgmt_open,
+       .release        =       dgap_mgmt_close
+};
+
+
+/*
+ * Globals
+ */
+uint                   dgap_NumBoards;
+struct board_t         *dgap_Board[MAXBOARDS];
+DEFINE_SPINLOCK(dgap_global_lock);
+ulong                  dgap_poll_counter;
+char                   *dgap_config_buf;
+int                    dgap_driver_state = DRIVER_INITIALIZED;
+DEFINE_SPINLOCK(dgap_dl_lock);
+wait_queue_head_t      dgap_dl_wait;
+int                    dgap_dl_action;
+int                    dgap_poll_tick = 20;    /* Poll interval - 20 ms */
+
+/*
+ * Static vars.
+ */
+static int             dgap_Major_Control_Registered = FALSE;
+static uint            dgap_driver_start = FALSE;
+
+static struct class *  dgap_class;
+
+/*
+ * Poller stuff
+ */
+static                         DEFINE_SPINLOCK(dgap_poll_lock);        /* Poll scheduling lock */
+static ulong           dgap_poll_time;                         /* Time of next poll */
+static uint            dgap_poll_stop;                         /* Used to tell poller to stop */
+static struct timer_list dgap_poll_timer;
+
+
+static struct pci_device_id dgap_pci_tbl[] = {
+       {       DIGI_VID, PCI_DEVICE_XEM_DID,   PCI_ANY_ID, PCI_ANY_ID, 0, 0,   0 },
+       {       DIGI_VID, PCI_DEVICE_CX_DID,    PCI_ANY_ID, PCI_ANY_ID, 0, 0,   1 },
+       {       DIGI_VID, PCI_DEVICE_CX_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,  2 },
+       {       DIGI_VID, PCI_DEVICE_EPCJ_DID,  PCI_ANY_ID, PCI_ANY_ID, 0, 0,   3 },
+       {       DIGI_VID, PCI_DEVICE_920_2_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,   4 },
+       {       DIGI_VID, PCI_DEVICE_920_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,   5 },
+       {       DIGI_VID, PCI_DEVICE_920_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,   6 },
+       {       DIGI_VID, PCI_DEVICE_XR_DID,    PCI_ANY_ID, PCI_ANY_ID, 0, 0,   7 },
+       {       DIGI_VID, PCI_DEVICE_XRJ_DID,   PCI_ANY_ID, PCI_ANY_ID, 0, 0,   8 },
+       {       DIGI_VID, PCI_DEVICE_XR_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,  9 },
+       {       DIGI_VID, PCI_DEVICE_XR_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,  10 },
+       {       DIGI_VID, PCI_DEVICE_XR_SAIP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
+       {       DIGI_VID, PCI_DEVICE_XR_BULL_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
+       {       DIGI_VID, PCI_DEVICE_920_8_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
+       {       DIGI_VID, PCI_DEVICE_XEM_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,  14 },
+       {0,}                                    /* 0 terminated list. */
+};
+MODULE_DEVICE_TABLE(pci, dgap_pci_tbl);
+
+
+/*
+ * A generic list of Product names, PCI Vendor ID, and PCI Device ID.
+ */
+struct board_id {
+       uint config_type;
+       uchar *name;
+       uint maxports;
+       uint dpatype;
+};
+
+static struct board_id dgap_Ids[] =
+{
+       {       PPCM,           PCI_DEVICE_XEM_NAME,    64,     (T_PCXM | T_PCLITE | T_PCIBUS)  },
+       {       PCX,            PCI_DEVICE_CX_NAME,     128,    (T_CX | T_PCIBUS)               },
+       {       PCX,            PCI_DEVICE_CX_IBM_NAME, 128,    (T_CX | T_PCIBUS)               },
+       {       PEPC,           PCI_DEVICE_EPCJ_NAME,   224,    (T_EPC  | T_PCIBUS)             },
+       {       APORT2_920P,    PCI_DEVICE_920_2_NAME,  2,      (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       APORT4_920P,    PCI_DEVICE_920_4_NAME,  4,      (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       APORT8_920P,    PCI_DEVICE_920_8_NAME,  8,      (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       PAPORT8,        PCI_DEVICE_XR_NAME,     8,      (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       PAPORT8,        PCI_DEVICE_XRJ_NAME,    8,      (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       PAPORT8,        PCI_DEVICE_XR_422_NAME, 8,      (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       PAPORT8,        PCI_DEVICE_XR_IBM_NAME, 8,      (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       PAPORT8,        PCI_DEVICE_XR_SAIP_NAME, 8,     (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       PAPORT8,        PCI_DEVICE_XR_BULL_NAME, 8,     (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       APORT8_920P,    PCI_DEVICE_920_8_HP_NAME, 8,    (T_PCXR | T_PCLITE | T_PCIBUS)  },
+       {       PPCM,           PCI_DEVICE_XEM_HP_NAME, 64,     (T_PCXM | T_PCLITE | T_PCIBUS)  },
+       {0,}                                            /* 0 terminated list. */
+};
+
+static struct pci_driver dgap_driver = {
+       .name           = "dgap",
+       .probe          = dgap_init_one,
+       .id_table       = dgap_pci_tbl,
+       .remove         = dgap_remove_one,
+};
+
+
+char *dgap_state_text[] = {
+       "Board Failed",
+       "Configuration for board not found.\n\t\t\tRun mpi to configure board.",
+       "Board Found",
+       "Need Reset",
+       "Finished Reset",
+       "Need Config",
+       "Finished Config",
+       "Need Device Creation",
+       "Requested Device Creation",
+       "Finished Device Creation",
+       "Need BIOS Load", 
+       "Requested BIOS", 
+       "Doing BIOS Load",
+       "Finished BIOS Load",
+       "Need FEP Load", 
+       "Requested FEP",
+       "Doing FEP Load",
+       "Finished FEP Load",
+       "Requested PROC creation",
+       "Finished PROC creation",
+       "Board READY",
+};
+
+char *dgap_driver_state_text[] = {
+       "Driver Initialized",
+       "Driver needs configuration load.",
+       "Driver requested configuration from download daemon.",
+       "Driver Ready."
+};
+
+
+
+/************************************************************************
+ *
+ * Driver load/unload functions
+ *
+ ************************************************************************/
+
+/*
+ * init_module()
+ *
+ * Module load.  This is where it all starts.
+ */
+int dgap_init_module(void)
+{
+       int rc = 0;
+
+       APR(("%s, Digi International Part Number %s\n", DG_NAME, DG_PART));
+
+       /*
+        * Initialize global stuff
+        */
+       rc = dgap_start();
+
+       if (rc < 0) {
+               return(rc);
+       }
+
+       /*
+        * Find and configure all the cards
+        */
+       rc = dgap_init_pci();
+
+       /*
+        * If something went wrong in the scan, bail out of driver.
+        */
+       if (rc < 0) {
+               /* Only unregister the pci driver if it was actually registered. */
+               if (dgap_NumBoards)
+                       pci_unregister_driver(&dgap_driver);
+               else
+                       printk("WARNING: dgap driver load failed.  No DGAP boards found.\n");
+
+               dgap_cleanup_module();
+       }
+       else {
+               dgap_create_driver_sysfiles(&dgap_driver);
+       }
+  
+       DPR_INIT(("Finished init_module. Returning %d\n", rc));
+       return (rc);
+}
+
+
+/*
+ * Start of driver.
+ */
+static int dgap_start(void)
+{
+       int rc = 0;
+       unsigned long flags;
+
+       if (dgap_driver_start == FALSE) {
+
+               dgap_driver_start = TRUE;
+
+               /* make sure that the globals are init'd before we do anything else */
+               dgap_init_globals();
+
+               dgap_NumBoards = 0;
+
+               APR(("For the tools package or updated drivers please visit http://www.digi.com\n"));
+
+               /*
+                * Register our base character device into the kernel.
+                * This allows the download daemon to connect to the downld device
+                * before any of the boards are init'ed.
+                */
+               if (!dgap_Major_Control_Registered) {
+                       /*
+                        * Register management/dpa devices
+                        */
+                       rc = register_chrdev(DIGI_DGAP_MAJOR, "dgap", &DgapBoardFops);
+                       if (rc < 0) {
+                               APR(("Can't register dgap driver device (%d)\n", rc));
+                               return (rc);
+                       }
+
+                       dgap_class = class_create(THIS_MODULE, "dgap_mgmt");
+                       device_create(dgap_class, NULL,
+                               MKDEV(DIGI_DGAP_MAJOR, 0),
+                               NULL, "dgap_mgmt");
+                       device_create(dgap_class, NULL,
+                               MKDEV(DIGI_DGAP_MAJOR, 1),
+                               NULL, "dgap_downld");
+                       dgap_Major_Control_Registered = TRUE;
+               }
+
+               /*
+                * Register our basic stuff in /proc/dgap
+                */
+               dgap_proc_register_basic_prescan();
+
+               /*
+                * Init any global tty stuff.
+                */
+               rc = dgap_tty_preinit();
+
+               if (rc < 0) {
+                       APR(("tty preinit - not enough memory (%d)\n", rc));
+                       return(rc); 
+               }
+
+               /* Start the poller */
+               DGAP_LOCK(dgap_poll_lock, flags);
+               init_timer(&dgap_poll_timer);
+               dgap_poll_timer.function = dgap_poll_handler;
+               dgap_poll_timer.data = 0;
+               dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
+               dgap_poll_timer.expires = dgap_poll_time;
+               DGAP_UNLOCK(dgap_poll_lock, flags);
+
+               add_timer(&dgap_poll_timer);
+
+               dgap_driver_state = DRIVER_NEED_CONFIG_LOAD;
+       }
+
+       return (rc);
+}
+
+
+/*
+ * Register pci driver, and return how many boards we have.
+ */
+static int dgap_init_pci(void)
+{
+       return pci_register_driver(&dgap_driver);
+}
+
+
+/* returns count (>= 0), or negative on error */
+static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+       int rc;
+
+       /* wake up and enable device */
+       rc = pci_enable_device(pdev);
+
+       if (rc < 0) {
+               rc = -EIO;
+       } else {  
+               rc = dgap_probe1(pdev, ent->driver_data);
+               if (rc == 0) {
+                       dgap_NumBoards++;
+                       DPR_INIT(("Incrementing numboards to %d\n", dgap_NumBoards));
+               }
+       }
+       return rc;
+}               
+
+
+static int dgap_probe1(struct pci_dev *pdev, int card_type)
+{
+       return dgap_found_board(pdev, card_type);
+}
+         
+        
+static void dgap_remove_one(struct pci_dev *dev)
+{
+       /* Do Nothing */
+}
+
+
+/*
+ * dgap_cleanup_module()
+ *
+ * Module unload.  This is where it all ends.
+ */
+void dgap_cleanup_module(void)
+{
+       int i;
+       ulong lock_flags;
+
+       DGAP_LOCK(dgap_poll_lock, lock_flags);
+       dgap_poll_stop = 1;
+       DGAP_UNLOCK(dgap_poll_lock, lock_flags);
+
+       /* Turn off poller right away. */
+       del_timer_sync( &dgap_poll_timer);
+
+       dgap_proc_unregister_all();
+
+       dgap_remove_driver_sysfiles(&dgap_driver);
+
+
+       if (dgap_Major_Control_Registered) {
+               device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
+               device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 1));
+               class_destroy(dgap_class);
+               unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
+       }
+
+       if (dgap_config_buf)
+               kfree(dgap_config_buf);
+
+       for (i = 0; i < dgap_NumBoards; ++i) {
+               dgap_remove_ports_sysfiles(dgap_Board[i]);
+               dgap_tty_uninit(dgap_Board[i]);
+               dgap_cleanup_board(dgap_Board[i]);
+       }
+
+       dgap_tty_post_uninit();
+
+#if defined(DGAP_TRACER)
+       /* last thing, make sure we release the tracebuffer */
+       dgap_tracer_free();
+#endif
+       if (dgap_NumBoards)
+               pci_unregister_driver(&dgap_driver);
+}
+
+
+/*
+ * dgap_cleanup_board()
+ *
+ * Free all the memory associated with a board
+ */
+static void dgap_cleanup_board(struct board_t *brd)
+{
+       int i = 0;
+
+        if(!brd || brd->magic != DGAP_BOARD_MAGIC)
+                return;
+
+       if (brd->intr_used && brd->irq)
+               free_irq(brd->irq, brd);
+
+       tasklet_kill(&brd->helper_tasklet);
+
+       if (brd->re_map_port) {
+               release_mem_region(brd->membase + 0x200000, 0x200000);
+               iounmap(brd->re_map_port);
+               brd->re_map_port = NULL;
+       }
+
+       if (brd->re_map_membase) {
+               release_mem_region(brd->membase, 0x200000);
+               iounmap(brd->re_map_membase);
+               brd->re_map_membase = NULL;
+       }
+
+        if (brd->msgbuf_head) {
+                unsigned long flags;
+
+                DGAP_LOCK(dgap_global_lock, flags);
+                brd->msgbuf = NULL;
+                printk(brd->msgbuf_head);
+                kfree(brd->msgbuf_head);
+                brd->msgbuf_head = NULL;
+                DGAP_UNLOCK(dgap_global_lock, flags);
+        }
+
+       /* Free all allocated channels structs */
+       for (i = 0; i < MAXPORTS ; i++) {
+               if (brd->channels[i]) {
+                       kfree(brd->channels[i]);
+                       brd->channels[i] = NULL;
+               }
+       }
+
+       if (brd->flipbuf)
+               kfree(brd->flipbuf);
+       if (brd->flipflagbuf)
+               kfree(brd->flipflagbuf);
+
+       dgap_Board[brd->boardnum] = NULL;
+
+        kfree(brd);
+}
+
+
+/*
+ * dgap_found_board()
+ *
+ * A board has been found, init it.
+ */
+static int dgap_found_board(struct pci_dev *pdev, int id)
+{
+       struct board_t *brd;
+       unsigned int pci_irq;
+       int i = 0;
+       unsigned long flags;
+
+       /* get the board structure and prep it */
+       brd = dgap_Board[dgap_NumBoards] =
+       (struct board_t *) dgap_driver_kzmalloc(sizeof(struct board_t), GFP_KERNEL);
+       if (!brd) {
+               APR(("memory allocation for board structure failed\n"));
+               return(-ENOMEM);
+       }
+
+       /* make a temporary message buffer for the boot messages */
+       brd->msgbuf = brd->msgbuf_head =
+               (char *) dgap_driver_kzmalloc(sizeof(char) * 8192, GFP_KERNEL);
+       if(!brd->msgbuf) {
+               kfree(brd);
+               APR(("memory allocation for board msgbuf failed\n"));
+               return(-ENOMEM);
+       }
+
+       /* store the info for the board we've found */
+       brd->magic = DGAP_BOARD_MAGIC;
+       brd->boardnum = dgap_NumBoards;
+       brd->firstminor = 0;
+       brd->vendor = dgap_pci_tbl[id].vendor;
+       brd->device = dgap_pci_tbl[id].device;
+       brd->pdev = pdev;
+       brd->pci_bus = pdev->bus->number;
+       brd->pci_slot = PCI_SLOT(pdev->devfn);
+       brd->name = dgap_Ids[id].name;
+       brd->maxports = dgap_Ids[id].maxports;
+       brd->type = dgap_Ids[id].config_type;
+       brd->dpatype = dgap_Ids[id].dpatype;
+       brd->dpastatus = BD_NOFEP;
+       init_waitqueue_head(&brd->state_wait);
+
+       DGAP_SPINLOCK_INIT(brd->bd_lock);
+
+       brd->state              = BOARD_FOUND;
+       brd->runwait            = 0;
+       brd->inhibit_poller     = FALSE;
+       brd->wait_for_bios      = 0;
+       brd->wait_for_fep       = 0;
+
+       for (i = 0; i < MAXPORTS; i++) {
+               brd->channels[i] = NULL;
+       }
+
+       /* store which card & revision we have */
+       pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
+       pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
+       pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
+
+       pci_irq = pdev->irq;
+       brd->irq = pci_irq;
+
+       /* get the PCI Base Address Registers */
+
+       /* Xr Jupiter and EPC use BAR 2 */
+       if (brd->device == PCI_DEVICE_XRJ_DID || brd->device == PCI_DEVICE_EPCJ_DID) {
+               brd->membase     = pci_resource_start(pdev, 2);
+               brd->membase_end = pci_resource_end(pdev, 2);
+       }
+       /* Everyone else uses BAR 0 */
+       else {
+               brd->membase     = pci_resource_start(pdev, 0);
+               brd->membase_end = pci_resource_end(pdev, 0);
+       }
+
+       if (!brd->membase) {
+               APR(("card has no PCI IO resources, failing board.\n"));
+               return -ENODEV;
+       }
+
+       if (brd->membase & 1)
+               brd->membase &= ~3;
+       else
+               brd->membase &= ~15;
+
+       /*
+        * On the PCI boards, there is no IO space allocated
+        * The I/O registers will be in the first 3 bytes of the
+        * upper 2MB of the 4MB memory space.  The board memory
+        * will be mapped into the low 2MB of the 4MB memory space
+        */
+       brd->port = brd->membase + PCI_IO_OFFSET;
+       brd->port_end = brd->port + PCI_IO_SIZE;
+
+
+       /*
+        * Special initialization for non-PLX boards
+        */
+       if (brd->device != PCI_DEVICE_XRJ_DID && brd->device != PCI_DEVICE_EPCJ_DID) {
+               unsigned short cmd;
+
+               pci_write_config_byte(pdev, 0x40, 0);
+               pci_write_config_byte(pdev, 0x46, 0);
+
+               /* Limit burst length to 2 doubleword transactions */ 
+               pci_write_config_byte(pdev, 0x42, 1);
+
+               /*
+                * Enable IO and mem if not already done.
+                * This was needed for support on Itanium.
+                */
+               pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+               cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
+               pci_write_config_word(pdev, PCI_COMMAND, cmd);
+       }
+
+       /* init our poll helper tasklet */
+       tasklet_init(&brd->helper_tasklet, dgap_poll_tasklet, (unsigned long) brd);
+
+        /* Log the information about the board */
+       dgap_mbuf(brd, DRVSTR": board %d: %s (rev %d), irq %d\n",
+               dgap_NumBoards, brd->name, brd->rev, brd->irq);
+
+       DPR_INIT(("dgap_scan(%d) - printing out the msgbuf\n", i));
+       DGAP_LOCK(dgap_global_lock, flags);
+       brd->msgbuf = NULL;
+       printk(brd->msgbuf_head);
+       kfree(brd->msgbuf_head);
+       brd->msgbuf_head = NULL;
+       DGAP_UNLOCK(dgap_global_lock, flags);
+
+       i = dgap_do_remap(brd);
+       if (i)
+               brd->state = BOARD_FAILED;
+       else
+               brd->state = NEED_RESET;
+
+        return(0);
+}
+
+
+int dgap_finalize_board_init(struct board_t *brd) {
+
+        int rc;
+
+        DPR_INIT(("dgap_finalize_board_init() - start\n"));
+
+       if (!brd || brd->magic != DGAP_BOARD_MAGIC)
+                return(-ENODEV);
+
+        DPR_INIT(("dgap_finalize_board_init() - start #2\n"));
+
+       brd->use_interrupts = dgap_config_get_useintr(brd);
+
+       /*
+        * Set up our interrupt handler if we are set to do interrupts.
+        */
+       if (brd->use_interrupts && brd->irq) {
+
+               rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd);
+
+               if (rc) {
+                       dgap_mbuf(brd, DRVSTR": Failed to hook IRQ %d. Board will work in poll mode.\n",
+                                  brd->irq);
+                       brd->intr_used = 0;
+               }
+               else
+                       brd->intr_used = 1;
+       } else {
+               brd->intr_used = 0;
+       }
+
+       return(0);
+}
+
+
+/*
+ * Remap PCI memory.
+ */
+static int dgap_do_remap(struct board_t *brd)
+{
+       if (!brd || brd->magic != DGAP_BOARD_MAGIC)
+               return -ENXIO;
+
+       if (!request_mem_region(brd->membase, 0x200000, "dgap")) {
+               APR(("dgap: mem_region %lx already in use.\n", brd->membase));
+               return -ENOMEM;
+        }
+
+       if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000, "dgap")) {
+               APR(("dgap: mem_region IO %lx already in use.\n",
+                       brd->membase + PCI_IO_OFFSET));
+               release_mem_region(brd->membase, 0x200000);
+               return -ENOMEM;
+        }
+
+       brd->re_map_membase = ioremap(brd->membase, 0x200000);
+       if (!brd->re_map_membase) {
+               APR(("dgap: ioremap mem %lx cannot be mapped.\n", brd->membase));
+               release_mem_region(brd->membase, 0x200000);
+               release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
+               return -ENOMEM;
+       }
+
+       brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
+       if (!brd->re_map_port) {
+               release_mem_region(brd->membase, 0x200000);
+               release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
+               iounmap(brd->re_map_membase);
+               APR(("dgap: ioremap IO mem %lx cannot be mapped.\n",
+                       brd->membase + PCI_IO_OFFSET));
+               return -ENOMEM;
+       }
+
+       DPR_INIT(("remapped io: 0x%p  remapped mem: 0x%p\n",
+               brd->re_map_port, brd->re_map_membase));
+       return 0;
+}
+
+
+/*****************************************************************************
+*
+* Function:
+*                                       
+*    dgap_poll_handler
+*
+* Author:
+*
+*    Scott H Kilau
+*       
+* Parameters:
+*
+*    dummy -- ignored                    
+*
+* Return Values:
+*
+*    none
+*
+* Description:   
+*                                       
+*    As each timer expires, it determines (a) whether the "transmit"
+*    waiter needs to be woken up, and (b) whether the poller needs to
+*    be rescheduled.
+*
+******************************************************************************/
+
+static void dgap_poll_handler(ulong dummy)
+{
+       int i;
+        struct board_t *brd;
+        unsigned long lock_flags;
+        unsigned long lock_flags2;
+       ulong new_time;
+
+       dgap_poll_counter++;
+
+
+       /*
+        * If driver needs the config file still,
+        * keep trying to wake up the downloader to
+        * send us the file.
+        */
+        if (dgap_driver_state == DRIVER_NEED_CONFIG_LOAD) {
+               /*
+                * Signal downloader, its got some work to do.
+                */
+               DGAP_LOCK(dgap_dl_lock, lock_flags2);
+               if (dgap_dl_action != 1) {
+                       dgap_dl_action = 1;
+                       wake_up_interruptible(&dgap_dl_wait);
+               }
+               DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+               goto schedule_poller;
+        }
+       /*
+        * Do not start the board state machine until
+        * driver tells us its up and running, and has
+        * everything it needs.
+        */
+       else if (dgap_driver_state != DRIVER_READY) {
+               goto schedule_poller;
+       }
+
+       /*
+        * If we have just 1 board, or the system is not SMP,
+        * then use the typical old style poller.
+        * Otherwise, use our new tasklet based poller, which should
+        * speed things up for multiple boards.
+        */
+       if ( (dgap_NumBoards == 1) || (num_online_cpus() <= 1) ) {
+               for (i = 0; i < dgap_NumBoards; i++) {
+
+                       brd = dgap_Board[i];
+
+                       if (brd->state == BOARD_FAILED) {
+                               continue;
+                       }
+                       if (!brd->intr_running) {
+                               /* Call the real board poller directly */
+                               dgap_poll_tasklet((unsigned long) brd);
+                       }
+               }
+       }
+       else {
+               /* Go thru each board, kicking off a tasklet for each if needed */
+               for (i = 0; i < dgap_NumBoards; i++) {
+                       brd = dgap_Board[i];
+
+                       /*
+                        * Attempt to grab the board lock.
+                        *
+                        * If we can't get it, no big deal, the next poll will get it.
+                        * Basically, I just really don't want to spin in here, because I want
+                        * to kick off my tasklets as fast as I can, and then get out the poller.
+                        */
+                       if (!spin_trylock(&brd->bd_lock)) {
+                               continue;
+                       }
+
+                       /* If board is in a failed state, don't bother scheduling a tasklet */
+                       if (brd->state == BOARD_FAILED) {
+                               spin_unlock(&brd->bd_lock);
+                               continue;
+                       }
+
+                       /* Schedule a poll helper task */
+                       if (!brd->intr_running) {
+                               tasklet_schedule(&brd->helper_tasklet);
+                       }
+
+                       /*
+                        * Can't do DGAP_UNLOCK here, as we don't have
+                        * lock_flags because we did a trylock above.
+                        */
+                       spin_unlock(&brd->bd_lock);
+               }
+       }
+
+schedule_poller:
+
+       /*
+        * Schedule ourself back at the nominal wakeup interval.
+        */
+       DGAP_LOCK(dgap_poll_lock, lock_flags );
+       dgap_poll_time +=  dgap_jiffies_from_ms(dgap_poll_tick);
+
+       new_time = dgap_poll_time - jiffies;
+
+       if ((ulong) new_time >= 2 * dgap_poll_tick) {
+               dgap_poll_time = jiffies +  dgap_jiffies_from_ms(dgap_poll_tick);
+       }
+
+       dgap_poll_timer.function = dgap_poll_handler;
+       dgap_poll_timer.data = 0;
+       dgap_poll_timer.expires = dgap_poll_time;
+       DGAP_UNLOCK(dgap_poll_lock, lock_flags );
+
+       if (!dgap_poll_stop)
+               add_timer(&dgap_poll_timer);
+}
+
+
+
+
+/*
+ * dgap_intr()
+ *
+ * Driver interrupt handler.
+ */
+static irqreturn_t dgap_intr(int irq, void *voidbrd)
+{
+       struct board_t *brd = (struct board_t *) voidbrd;
+
+       if (!brd) {
+               APR(("Received interrupt (%d) with null board associated\n", irq));
+               return IRQ_NONE;
+       }
+
+       /*
+        * Check to make sure its for us.
+        */
+       if (brd->magic != DGAP_BOARD_MAGIC) {
+               APR(("Received interrupt (%d) with a board pointer that wasn't ours!\n", irq));
+               return IRQ_NONE;
+       }
+
+       brd->intr_count++;
+
+       /*
+        * Schedule tasklet to run at a better time.
+        */
+       tasklet_schedule(&brd->helper_tasklet);
+       return IRQ_HANDLED;
+}
+
+
+/*
+ * dgap_init_globals()
+ *
+ * This is where we initialize the globals from the static insmod
+ * configuration variables.  These are declared near the head of
+ * this file.
+ */
+static void dgap_init_globals(void)
+{
+       int i = 0;
+
+       dgap_rawreadok          = rawreadok;
+        dgap_trcbuf_size       = trcbuf_size;
+       dgap_debug              = debug;
+
+       for (i = 0; i < MAXBOARDS; i++) {
+               dgap_Board[i] = NULL;
+       }
+
+       init_timer( &dgap_poll_timer ); 
+
+       init_waitqueue_head(&dgap_dl_wait);
+       dgap_dl_action = 0;
+}
+
+
+/************************************************************************
+ *
+ * Utility functions
+ *
+ ************************************************************************/
+
+
+/*
+ * dgap_driver_kzmalloc()
+ *
+ * Malloc and clear memory,
+ */
+void *dgap_driver_kzmalloc(size_t size, int priority)
+{
+       void *p = kmalloc(size, priority);
+       if(p)
+               memset(p, 0, size);
+       return(p);
+}
+
+
+/*
+ * dgap_mbuf()
+ *
+ * Used to print to the message buffer during board init.
+ */
+static void dgap_mbuf(struct board_t *brd, const char *fmt, ...) {
+       va_list         ap;
+       char            buf[1024];
+       int             i;
+       unsigned long   flags;
+
+       DGAP_LOCK(dgap_global_lock, flags);
+
+       /* Format buf using fmt and arguments contained in ap. */
+       va_start(ap, fmt);
+       i = vsprintf(buf, fmt,  ap);
+       va_end(ap);
+
+       DPR((buf));
+
+       if (!brd || !brd->msgbuf) {
+               printk(buf);
+               DGAP_UNLOCK(dgap_global_lock, flags);
+               return;
+       }
+
+       memcpy(brd->msgbuf, buf, strlen(buf));
+       brd->msgbuf += strlen(buf);
+       *brd->msgbuf = 0;
+
+       DGAP_UNLOCK(dgap_global_lock, flags);
+}
+
+
+/*
+ * dgap_ms_sleep()
+ *
+ * Put the driver to sleep for x ms's
+ *
+ * Returns 0 if timed out, !0 (showing signal) if interrupted by a signal.
+ */
+int dgap_ms_sleep(ulong ms)
+{
+       current->state = TASK_INTERRUPTIBLE;
+       schedule_timeout((ms * HZ) / 1000);
+       return (signal_pending(current));
+}
+
+
+
+/*
+ *      dgap_ioctl_name() : Returns a text version of each ioctl value.
+ */
+char *dgap_ioctl_name(int cmd)
+{
+       switch(cmd) {
+
+       case TCGETA:            return("TCGETA");
+       case TCGETS:            return("TCGETS");
+       case TCSETA:            return("TCSETA");
+       case TCSETS:            return("TCSETS");
+       case TCSETAW:           return("TCSETAW");
+       case TCSETSW:           return("TCSETSW");
+       case TCSETAF:           return("TCSETAF");
+       case TCSETSF:           return("TCSETSF");
+       case TCSBRK:            return("TCSBRK");
+       case TCXONC:            return("TCXONC");
+       case TCFLSH:            return("TCFLSH");
+       case TIOCGSID:          return("TIOCGSID");
+
+       case TIOCGETD:          return("TIOCGETD");
+       case TIOCSETD:          return("TIOCSETD");
+       case TIOCGWINSZ:        return("TIOCGWINSZ");
+       case TIOCSWINSZ:        return("TIOCSWINSZ");
+
+       case TIOCMGET:          return("TIOCMGET");
+       case TIOCMSET:          return("TIOCMSET");
+       case TIOCMBIS:          return("TIOCMBIS");
+       case TIOCMBIC:          return("TIOCMBIC");
+
+       /* from digi.h */
+       case DIGI_SETA:         return("DIGI_SETA");
+       case DIGI_SETAW:        return("DIGI_SETAW");
+       case DIGI_SETAF:        return("DIGI_SETAF");
+       case DIGI_SETFLOW:      return("DIGI_SETFLOW");
+       case DIGI_SETAFLOW:     return("DIGI_SETAFLOW");
+       case DIGI_GETFLOW:      return("DIGI_GETFLOW");
+       case DIGI_GETAFLOW:     return("DIGI_GETAFLOW");
+       case DIGI_GETA:         return("DIGI_GETA");
+       case DIGI_GEDELAY:      return("DIGI_GEDELAY");
+       case DIGI_SEDELAY:      return("DIGI_SEDELAY");
+       case DIGI_GETCUSTOMBAUD: return("DIGI_GETCUSTOMBAUD");
+       case DIGI_SETCUSTOMBAUD: return("DIGI_SETCUSTOMBAUD");
+       case TIOCMODG:          return("TIOCMODG");
+       case TIOCMODS:          return("TIOCMODS");
+       case TIOCSDTR:          return("TIOCSDTR");
+       case TIOCCDTR:          return("TIOCCDTR");
+
+       default:                return("unknown");
+       }
+}
diff --git a/drivers/staging/dgap/dgap_driver.h b/drivers/staging/dgap/dgap_driver.h
new file mode 100644 (file)
index 0000000..b76ec3c
--- /dev/null
@@ -0,0 +1,626 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *      Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ *
+ *************************************************************************
+ *
+ * Driver includes
+ *
+ *************************************************************************/
+
+#ifndef __DGAP_DRIVER_H
+#define __DGAP_DRIVER_H
+
+#include <linux/version.h>     /* To get the current Linux version */
+#include <linux/types.h>        /* To pick up the varions Linux types */
+#include <linux/tty.h>          /* To pick up the various tty structs/defines */
+#include <linux/interrupt.h>    /* For irqreturn_t type */
+
+#include "dgap_types.h"         /* Additional types needed by the Digi header files */
+#include "digi.h"               /* Digi specific ioctl header */
+#include "dgap_kcompat.h"       /* Kernel 2.4/2.6 compat includes */
+#include "dgap_sysfs.h"                /* Support for SYSFS */
+
+/*************************************************************************
+ *
+ * Driver defines
+ *
+ *************************************************************************/
+
+/*
+ * Driver identification, error and debugging statments
+ *
+ * In theory, you can change all occurances of "digi" in the next
+ * three lines, and the driver printk's will all automagically change.
+ *
+ * APR((fmt, args, ...));      Always prints message
+ * DPR((fmt, args, ...));      Only prints if DGAP_TRACER is defined at
+ *                               compile time and dgap_debug!=0
+ */
+#define        PROCSTR         "dgap"                  /* /proc entries         */
+#define        DEVSTR          "/dev/dg/dgap"          /* /dev entries          */
+#define        DRVSTR          "dgap"                  /* Driver name string 
+                                                * displayed by APR      */
+#define        APR(args)       do { PRINTF_TO_KMEM(args); printk(DRVSTR": "); printk args; \
+                          } while (0)
+#define        RAPR(args)      do { PRINTF_TO_KMEM(args); printk args; } while (0)
+
+#define TRC_TO_CONSOLE 1
+
+/*
+ * Debugging levels can be set using debug insmod variable
+ * They can also be compiled out completely.
+ */
+
+#define        DBG_INIT                (dgap_debug & 0x01)
+#define        DBG_BASIC               (dgap_debug & 0x02)
+#define        DBG_CORE                (dgap_debug & 0x04)
+
+#define        DBG_OPEN                (dgap_debug & 0x08)
+#define        DBG_CLOSE               (dgap_debug & 0x10)
+#define        DBG_READ                (dgap_debug & 0x20)
+#define        DBG_WRITE               (dgap_debug & 0x40)
+
+#define        DBG_IOCTL               (dgap_debug & 0x80)
+
+#define        DBG_PROC                (dgap_debug & 0x100)
+#define        DBG_PARAM               (dgap_debug & 0x200)
+#define        DBG_PSCAN               (dgap_debug & 0x400)
+#define        DBG_EVENT               (dgap_debug & 0x800)
+
+#define        DBG_DRAIN               (dgap_debug & 0x1000)
+#define        DBG_CARR                (dgap_debug & 0x2000)
+
+#define        DBG_MGMT                (dgap_debug & 0x4000)
+
+
+#if defined(DGAP_TRACER)
+
+# if defined(TRC_TO_KMEM)
+/* Choose one: */
+#  define TRC_ON_OVERFLOW_WRAP_AROUND
+#  undef  TRC_ON_OVERFLOW_SHIFT_BUFFER
+# endif //TRC_TO_KMEM
+
+# define TRC_MAXMSG            1024
+# define TRC_OVERFLOW          "(OVERFLOW)"
+# define TRC_DTRC              "/usr/bin/dtrc"
+
+#if defined TRC_TO_CONSOLE
+#define PRINTF_TO_CONSOLE(args) { printk(DRVSTR": "); printk args; }
+#else //!defined TRACE_TO_CONSOLE
+#define PRINTF_TO_CONSOLE(args)
+#endif
+
+#if defined TRC_TO_KMEM
+#define PRINTF_TO_KMEM(args) dgap_tracef args 
+#else //!defined TRC_TO_KMEM
+#define PRINTF_TO_KMEM(args)
+#endif
+
+#define        TRC(args)       { PRINTF_TO_KMEM(args); PRINTF_TO_CONSOLE(args) }
+
+# define DPR_INIT(ARGS)                if (DBG_INIT) TRC(ARGS)
+# define DPR_BASIC(ARGS)       if (DBG_BASIC) TRC(ARGS)
+# define DPR_CORE(ARGS)                if (DBG_CORE) TRC(ARGS)
+# define DPR_OPEN(ARGS)                if (DBG_OPEN)  TRC(ARGS)
+# define DPR_CLOSE(ARGS)       if (DBG_CLOSE)  TRC(ARGS)
+# define DPR_READ(ARGS)                if (DBG_READ)  TRC(ARGS)
+# define DPR_WRITE(ARGS)       if (DBG_WRITE) TRC(ARGS)
+# define DPR_IOCTL(ARGS)       if (DBG_IOCTL) TRC(ARGS)
+# define DPR_PROC(ARGS)                if (DBG_PROC)  TRC(ARGS)
+# define DPR_PARAM(ARGS)       if (DBG_PARAM)  TRC(ARGS)
+# define DPR_PSCAN(ARGS)       if (DBG_PSCAN)  TRC(ARGS)
+# define DPR_EVENT(ARGS)       if (DBG_EVENT)  TRC(ARGS)
+# define DPR_DRAIN(ARGS)       if (DBG_DRAIN)  TRC(ARGS)
+# define DPR_CARR(ARGS)                if (DBG_CARR)  TRC(ARGS)
+# define DPR_MGMT(ARGS)                if (DBG_MGMT)  TRC(ARGS)
+
+# define DPR(ARGS)             if (dgap_debug) TRC(ARGS)
+# define P(X)                  dgap_tracef(#X "=%p\n", X)
+# define X(X)                  dgap_tracef(#X "=%x\n", X)
+
+#else//!defined DGAP_TRACER
+
+#define PRINTF_TO_KMEM(args)
+# define TRC(ARGS)
+# define DPR_INIT(ARGS)
+# define DPR_BASIC(ARGS)
+# define DPR_CORE(ARGS)
+# define DPR_OPEN(ARGS)
+# define DPR_CLOSE(ARGS)
+# define DPR_READ(ARGS)
+# define DPR_WRITE(ARGS)
+# define DPR_IOCTL(ARGS)
+# define DPR_PROC(ARGS)
+# define DPR_PARAM(ARGS)
+# define DPR_PSCAN(ARGS)
+# define DPR_EVENT(ARGS)
+# define DPR_DRAIN(ARGS)
+# define DPR_CARR(ARGS)
+# define DPR_MGMT(ARGS)
+
+# define DPR(args)
+
+#endif//DGAP_TRACER
+
+/* Number of boards we support at once. */
+#define        MAXBOARDS       32
+#define        MAXPORTS        224
+#define MAXTTYNAMELEN  200
+
+/* Our 3 magic numbers for our board, channel and unit structs */
+#define DGAP_BOARD_MAGIC       0x5c6df104
+#define DGAP_CHANNEL_MAGIC     0x6c6df104
+#define DGAP_UNIT_MAGIC                0x7c6df104
+
+/* Serial port types */
+#define DGAP_SERIAL            0
+#define DGAP_PRINT             1
+
+#define        SERIAL_TYPE_NORMAL      1
+
+/* 4 extra for alignment play space */
+#define WRITEBUFLEN            ((4096) + 4)
+#define MYFLIPLEN              N_TTY_BUF_SIZE
+
+#define SBREAK_TIME 0x25
+#define U2BSIZE 0x400
+
+#define dgap_jiffies_from_ms(a) (((a) * HZ) / 1000)
+
+/*
+ * Our major for the mgmt devices.
+ *
+ * We can use 22, because Digi was allocated 22 and 23 for the epca driver.
+ * 22 has now become obsolete now that the "cu" devices have 
+ * been removed from 2.6.
+ * Also, this *IS* the epca driver, just PCI only now.
+ */
+#ifndef DIGI_DGAP_MAJOR
+# define DIGI_DGAP_MAJOR         22
+#endif
+
+/*
+ * The parameters we use to define the periods of the moving averages.
+ */
+#define                MA_PERIOD       (HZ / 10)
+#define                SMA_DUR         (1 * HZ)
+#define                EMA_DUR         (1 * HZ)
+#define                SMA_NPERIODS    (SMA_DUR / MA_PERIOD)
+#define                EMA_NPERIODS    (EMA_DUR / MA_PERIOD)
+
+/*
+ * Define a local default termios struct. All ports will be created
+ * with this termios initially.  This is the same structure that is defined
+ * as the default in tty_io.c with the same settings overriden as in serial.c
+ *
+ * In short, this should match the internal serial ports' defaults.
+ */
+#define        DEFAULT_IFLAGS  (ICRNL | IXON)
+#define        DEFAULT_OFLAGS  (OPOST | ONLCR)
+#define        DEFAULT_CFLAGS  (B9600 | CS8 | CREAD | HUPCL | CLOCAL)
+#define        DEFAULT_LFLAGS  (ISIG | ICANON | ECHO | ECHOE | ECHOK | \
+                       ECHOCTL | ECHOKE | IEXTEN)
+
+#ifndef _POSIX_VDISABLE
+#define   _POSIX_VDISABLE '\0'
+#endif
+
+#define SNIFF_MAX      65536           /* Sniff buffer size (2^n) */
+#define SNIFF_MASK     (SNIFF_MAX - 1) /* Sniff wrap mask */
+
+#define VPDSIZE (512)
+
+/*
+ * Lock function/defines.
+ * Makes spotting lock/unlock locations easier.
+ */
+# define DGAP_SPINLOCK_INIT(x)         spin_lock_init(&(x))
+# define DGAP_LOCK(x,y)                        spin_lock_irqsave(&(x), y)
+# define DGAP_UNLOCK(x,y)              spin_unlock_irqrestore(&(x), y)
+# define DGAP_TRYLOCK(x,y)             spin_trylock(&(x))
+
+/*
+ * All the possible states the driver can be while being loaded.
+ */
+enum {
+       DRIVER_INITIALIZED = 0,
+       DRIVER_NEED_CONFIG_LOAD,
+       DRIVER_REQUESTED_CONFIG,
+       DRIVER_READY
+};
+
+/*
+ * All the possible states the board can be while booting up.
+ */
+enum {
+       BOARD_FAILED = 0,
+       CONFIG_NOT_FOUND,
+       BOARD_FOUND,
+       NEED_RESET,
+       FINISHED_RESET,
+       NEED_CONFIG,
+       FINISHED_CONFIG,
+       NEED_DEVICE_CREATION,
+       REQUESTED_DEVICE_CREATION,
+       FINISHED_DEVICE_CREATION,
+       NEED_BIOS_LOAD,
+       REQUESTED_BIOS,
+       WAIT_BIOS_LOAD,
+       FINISHED_BIOS_LOAD,
+       NEED_FEP_LOAD,
+       REQUESTED_FEP,
+       WAIT_FEP_LOAD,
+       FINISHED_FEP_LOAD,
+       NEED_PROC_CREATION,
+       FINISHED_PROC_CREATION,
+       BOARD_READY
+};
+
+/*
+ * All the possible states that a requested concentrator image can be in.
+ */
+enum {
+       NO_PENDING_CONCENTRATOR_REQUESTS = 0,
+       NEED_CONCENTRATOR,
+       REQUESTED_CONCENTRATOR
+};
+
+extern char *dgap_state_text[];
+extern char *dgap_driver_state_text[];
+
+
+/* 
+ * Modem line constants are defined as macros because DSR and
+ * DCD are swapable using the ditty altpin option.
+ */
+#define D_CD(ch)        ch->ch_cd       /* Carrier detect       */
+#define D_DSR(ch)       ch->ch_dsr      /* Data set ready       */
+#define D_RTS(ch)       DM_RTS          /* Request to send      */
+#define D_CTS(ch)       DM_CTS          /* Clear to send        */
+#define D_RI(ch)        DM_RI           /* Ring indicator       */
+#define D_DTR(ch)       DM_DTR          /* Data terminal ready  */
+
+
+/*************************************************************************
+ *
+ * Structures and closely related defines.
+ *
+ *************************************************************************/
+
+
+/*
+ * A structure to hold a statistics counter.  We also
+ * compute moving averages for this counter.
+ */
+struct macounter
+{
+       u32             cnt;    /* Total count */
+       ulong           accum;  /* Acuumulator per period */
+       ulong           sma;    /* Simple moving average */
+       ulong           ema;    /* Exponential moving average */
+};
+
+
+/************************************************************************ 
+ * Device flag definitions for bd_flags.
+ ************************************************************************/
+#define        BD_FEP5PLUS     0x0001          /* Supports FEP5 Plus commands */
+#define BD_HAS_VPD     0x0002          /* Board has VPD info available */
+
+
+/*
+ *     Per-board information
+ */
+struct board_t
+{
+       int             magic;          /* Board Magic number.  */
+       int             boardnum;       /* Board number: 0-3 */
+       int             firstminor;     /* First minor, e.g. 0, 30, 60 */
+
+       int             type;           /* Type of board */
+       char            *name;          /* Product Name */
+       struct pci_dev  *pdev;          /* Pointer to the pci_dev struct */ 
+       u16             vendor;         /* PCI vendor ID */
+       u16             device;         /* PCI device ID */
+       u16             subvendor;      /* PCI subsystem vendor ID */
+       u16             subdevice;      /* PCI subsystem device ID */
+       uchar           rev;            /* PCI revision ID */
+       uint            pci_bus;        /* PCI bus value */
+       uint            pci_slot;       /* PCI slot value */
+       u16             maxports;       /* MAX ports this board can handle */
+       uchar           vpd[VPDSIZE];   /* VPD of board, if found */
+       u32             bd_flags;       /* Board flags */
+
+       spinlock_t      bd_lock;        /* Used to protect board */
+
+       u32             state;          /* State of card. */
+       wait_queue_head_t state_wait;   /* Place to sleep on for state change */
+
+       struct          tasklet_struct helper_tasklet; /* Poll helper tasklet */
+
+       u32             wait_for_bios;
+       u32             wait_for_fep;
+
+       struct cnode *  bd_config;      /* Config of board */
+
+       u16             nasync;         /* Number of ports on card */
+
+       u32             use_interrupts; /* Should we be interrupt driven? */
+       ulong           irq;            /* Interrupt request number */
+       ulong           intr_count;     /* Count of interrupts */
+       u32             intr_used;      /* Non-zero if using interrupts */
+       u32             intr_running;   /* Non-zero if FEP knows its doing interrupts */
+
+       ulong           port;           /* Start of base io port of the card */
+       ulong           port_end;       /* End of base io port of the card */
+       ulong           membase;        /* Start of base memory of the card */
+       ulong           membase_end;    /* End of base memory of the card */
+
+       uchar           *re_map_port;   /* Remapped io port of the card */
+       uchar           *re_map_membase;/* Remapped memory of the card */
+
+       uchar           runwait;        /* # Processes waiting for FEP  */
+       uchar           inhibit_poller; /* Tells  the poller to leave us alone */
+
+       struct channel_t *channels[MAXPORTS]; /* array of pointers to our channels. */
+
+       struct tty_driver       *SerialDriver;
+       char            SerialName[200];
+       struct tty_driver       *PrintDriver;
+       char            PrintName[200];
+
+       u32             dgap_Major_Serial_Registered;
+       u32             dgap_Major_TransparentPrint_Registered;
+
+       u32             dgap_Serial_Major;
+       u32             dgap_TransparentPrint_Major;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+       u32             TtyRefCnt;
+#endif
+
+       struct bs_t     *bd_bs;                 /* Base structure pointer       */
+
+       char    *flipbuf;               /* Our flip buffer, alloced if board is found */
+       char    *flipflagbuf;           /* Our flip flag buffer, alloced if board is found */
+
+       u16             dpatype;        /* The board "type", as defined by DPA */
+       u16             dpastatus;      /* The board "status", as defined by DPA */
+       wait_queue_head_t kme_wait;     /* Needed for DPA support */
+
+       u32             conc_dl_status; /* Status of any pending conc download */
+       /*
+        *      Mgmt data.
+        */
+        char           *msgbuf_head;
+        char           *msgbuf;
+
+       /* /proc/<board> entries */
+       struct proc_dir_entry *proc_entry_pointer;
+       struct dgap_proc_entry *dgap_board_table;
+};
+
+
+
+/************************************************************************ 
+ * Unit flag definitions for un_flags.
+ ************************************************************************/
+#define UN_ISOPEN      0x0001          /* Device is open               */
+#define UN_CLOSING     0x0002          /* Line is being closed         */
+#define UN_IMM         0x0004          /* Service immediately          */
+#define UN_BUSY                0x0008          /* Some work this channel       */
+#define UN_BREAKI      0x0010          /* Input break received         */
+#define UN_PWAIT       0x0020          /* Printer waiting for terminal */
+#define UN_TIME                0x0040          /* Waiting on time              */
+#define UN_EMPTY       0x0080          /* Waiting output queue empty   */
+#define UN_LOW         0x0100          /* Waiting output low water mark*/
+#define UN_EXCL_OPEN   0x0200          /* Open for exclusive use       */
+#define UN_WOPEN       0x0400          /* Device waiting for open      */
+#define UN_WIOCTL      0x0800          /* Device waiting for open      */
+#define UN_HANGUP      0x8000          /* Carrier lost                 */
+
+struct device;
+
+/************************************************************************
+ * Structure for terminal or printer unit. 
+ ************************************************************************/
+struct un_t {
+       int     magic;          /* Unit Magic Number.                   */
+       struct  channel_t *un_ch;
+       u32     un_time;
+       u32     un_type;
+       u32     un_open_count;  /* Counter of opens to port             */
+       struct tty_struct *un_tty;/* Pointer to unit tty structure      */
+       u32     un_flags;       /* Unit flags                           */
+       wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
+       u32     un_dev;         /* Minor device number                  */
+       tcflag_t un_oflag;      /* oflags being done on board           */
+       tcflag_t un_lflag;      /* lflags being done on board           */
+       struct device *un_sysfs;
+};
+
+
+/************************************************************************ 
+ * Device flag definitions for ch_flags.
+ ************************************************************************/
+#define CH_PRON         0x0001          /* Printer on string                */
+#define CH_OUT          0x0002          /* Dial-out device open             */
+#define CH_STOP         0x0004          /* Output is stopped                */
+#define CH_STOPI        0x0008          /* Input is stopped                 */
+#define CH_CD           0x0010          /* Carrier is present               */
+#define CH_FCAR         0x0020          /* Carrier forced on                */
+
+#define CH_RXBLOCK      0x0080          /* Enable rx blocked flag           */
+#define CH_WLOW         0x0100          /* Term waiting low event           */
+#define CH_WEMPTY       0x0200          /* Term waiting empty event         */
+#define CH_RENABLE      0x0400          /* Buffer just emptied          */
+#define CH_RACTIVE      0x0800          /* Process active in xxread()   */
+#define CH_RWAIT        0x1000          /* Process waiting in xxread()  */
+#define CH_BAUD0       0x2000          /* Used for checking B0 transitions */
+#define CH_HANGUP       0x8000         /* Hangup received                  */
+
+/*
+ * Definitions for ch_sniff_flags
+ */
+#define SNIFF_OPEN     0x1
+#define SNIFF_WAIT_DATA        0x2
+#define SNIFF_WAIT_SPACE 0x4
+
+
+/************************************************************************ 
+ * Channel information structure.
+ ************************************************************************/
+struct channel_t {
+       int magic;                      /* Channel Magic Number         */
+       struct bs_t     *ch_bs;         /* Base structure pointer       */
+       struct cm_t     *ch_cm;         /* Command queue pointer        */
+       struct board_t *ch_bd;          /* Board structure pointer      */
+       unsigned char *ch_vaddr;        /* FEP memory origin            */
+       unsigned char *ch_taddr;        /* Write buffer origin          */
+       unsigned char *ch_raddr;        /* Read buffer origin           */
+       struct digi_t  ch_digi;         /* Transparent Print structure  */
+       struct un_t ch_tun;             /* Terminal unit info           */
+       struct un_t ch_pun;             /* Printer unit info            */
+
+       spinlock_t      ch_lock;        /* provide for serialization */
+       wait_queue_head_t ch_flags_wait;
+
+       u32     pscan_state;
+       uchar   pscan_savechar;
+
+       u32 ch_portnum;                 /* Port number, 0 offset.       */
+       u32 ch_open_count;              /* open count                   */
+       u32     ch_flags;               /* Channel flags                */
+
+
+       u32     ch_close_delay;         /* How long we should drop RTS/DTR for */
+
+       u32     ch_cpstime;             /* Time for CPS calculations    */
+
+       tcflag_t ch_c_iflag;            /* channel iflags               */
+       tcflag_t ch_c_cflag;            /* channel cflags               */
+       tcflag_t ch_c_oflag;            /* channel oflags               */
+       tcflag_t ch_c_lflag;            /* channel lflags               */
+
+       u16  ch_fepiflag;            /* FEP tty iflags               */
+       u16  ch_fepcflag;               /* FEP tty cflags               */
+       u16  ch_fepoflag;               /* FEP tty oflags               */
+       u16  ch_wopen;                  /* Waiting for open process cnt */
+       u16  ch_tstart;                 /* Transmit buffer start        */
+       u16  ch_tsize;                  /* Transmit buffer size         */
+       u16  ch_rstart;                 /* Receive buffer start         */
+       u16  ch_rsize;                  /* Receive buffer size          */
+       u16  ch_rdelay;                 /* Receive delay time           */
+
+       u16     ch_tlw;                 /* Our currently set low water mark */
+
+       u16  ch_cook;                   /* Output character mask        */
+
+       uchar   ch_card;                /* Card channel is on           */
+       uchar   ch_stopc;               /* Stop character               */
+       uchar   ch_startc;              /* Start character              */
+
+       uchar   ch_mostat;              /* FEP output modem status      */
+       uchar   ch_mistat;              /* FEP input modem status       */
+       uchar   ch_mforce;              /* Modem values to be forced    */
+       uchar   ch_mval;                /* Force values                 */
+       uchar   ch_fepstopc;            /* FEP stop character           */
+       uchar   ch_fepstartc;           /* FEP start character          */
+
+       uchar   ch_astopc;              /* Auxiliary Stop character     */
+       uchar   ch_astartc;             /* Auxiliary Start character    */
+       uchar   ch_fepastopc;           /* Auxiliary FEP stop char      */
+       uchar   ch_fepastartc;          /* Auxiliary FEP start char     */
+
+       uchar   ch_hflow;               /* FEP hardware handshake       */
+       uchar   ch_dsr;                 /* stores real dsr value        */
+       uchar   ch_cd;                  /* stores real cd value         */
+       uchar   ch_tx_win;              /* channel tx buffer window     */
+       uchar   ch_rx_win;              /* channel rx buffer window     */
+       uint    ch_custom_speed;        /* Custom baud, if set          */
+       uint    ch_baud_info;           /* Current baud info for /proc output   */
+       ulong   ch_rxcount;             /* total of data received so far        */
+       ulong   ch_txcount;             /* total of data transmitted so far     */
+       ulong   ch_err_parity;          /* Count of parity errors on channel    */
+       ulong   ch_err_frame;           /* Count of framing errors on channel   */
+       ulong   ch_err_break;           /* Count of breaks on channel   */
+       ulong   ch_err_overrun;         /* Count of overruns on channel */
+
+       /* /proc/<board>/<channel> entries */
+       struct proc_dir_entry *proc_entry_pointer;
+       struct dgap_proc_entry *dgap_channel_table;
+
+       uint ch_sniff_in;
+       uint ch_sniff_out;
+       char *ch_sniff_buf;             /* Sniff buffer for proc */
+       ulong ch_sniff_flags;           /* Channel flags                */
+       wait_queue_head_t ch_sniff_wait;
+};
+
+
+/*************************************************************************
+ *
+ * Prototypes for non-static functions used in more than one module
+ *
+ *************************************************************************/
+
+extern int             dgap_ms_sleep(ulong ms);
+extern void            *dgap_driver_kzmalloc(size_t size, int priority);
+extern char            *dgap_ioctl_name(int cmd);
+extern void            dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len);
+extern void            dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len);
+extern void            dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len);
+extern void            dgap_do_config_load(uchar __user *uaddr, int len);
+extern int             dgap_after_config_loaded(void);
+extern int             dgap_finalize_board_init(struct board_t *brd);
+
+/*
+ * Our Global Variables.
+ */
+extern int             dgap_driver_state;      /* The state of the driver      */
+extern int             dgap_debug;             /* Debug variable               */
+extern int             dgap_rawreadok;         /* Set if user wants rawreads   */
+extern int             dgap_poll_tick;         /* Poll interval - 20 ms        */
+extern spinlock_t      dgap_global_lock;       /* Driver global spinlock       */
+extern uint            dgap_NumBoards;         /* Total number of boards       */
+extern struct board_t  *dgap_Board[MAXBOARDS]; /* Array of board structs       */
+extern ulong           dgap_poll_counter;      /* Times the poller has run     */
+extern char            *dgap_config_buf;       /* The config file buffer       */
+extern spinlock_t      dgap_dl_lock;           /* Downloader spinlock          */
+extern wait_queue_head_t dgap_dl_wait;         /* Wait queue for downloader    */
+extern int             dgap_dl_action;         /* Action flag for downloader   */
+extern int             dgap_registerttyswithsysfs; /* Should we register the   */
+                                                   /* ttys with sysfs or not   */
+
+/*
+ * Global functions declared in dgap_fep5.c, but must be hidden from
+ * user space programs.
+ */
+extern void    dgap_poll_tasklet(unsigned long data); 
+extern void    dgap_cmdb(struct channel_t *ch, uchar cmd, uchar byte1, uchar byte2, uint ncmds);
+extern void    dgap_cmdw(struct channel_t *ch, uchar cmd, u16 word, uint ncmds);
+extern void    dgap_wmove(struct channel_t *ch, char *buf, uint cnt);
+extern int     dgap_param(struct tty_struct *tty);
+extern void    dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf, unsigned char *fbuf, int *len);
+extern uint    dgap_get_custom_baud(struct channel_t *ch);
+extern void    dgap_firmware_reset_port(struct channel_t *ch);
+
+#endif
diff --git a/drivers/staging/dgap/dgap_fep5.c b/drivers/staging/dgap/dgap_fep5.c
new file mode 100644 (file)
index 0000000..ed3cb15
--- /dev/null
@@ -0,0 +1,1957 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the 
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *     NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE!
+ *
+ *     This is shared code between Digi's CVS archive and the
+ *     Linux Kernel sources.
+ *     Changing the source just for reformatting needlessly breaks
+ *     our CVS diff history.
+ *
+ *     Send any bug fixes/changes to:  Eng.Linux at digi dot com.
+ *     Thank you.
+ *
+ * $Id: dgap_fep5.c,v 1.2 2011/06/21 10:35:40 markh Exp $
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>       /* For udelay */
+#include <asm/uaccess.h>       /* For copy_from_user/copy_to_user */
+#include <linux/tty.h>
+#include <linux/tty_flip.h>    /* For tty_schedule_flip */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
+#include <linux/sched.h>
+#endif
+
+#include "dgap_driver.h"
+#include "dgap_pci.h"
+#include "dgap_proc.h"
+#include "dgap_fep5.h"
+#include "dgap_tty.h"
+#include "dgap_conf.h"
+#include "dgap_parse.h"
+#include "dgap_mgmt.h"
+#include "dgap_trace.h"
+
+/*
+ * Our function prototypes
+ */
+static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds);
+static int dgap_event(struct board_t *bd);
+
+/*
+ * internal variables
+ */
+static uint dgap_count = 500;
+
+
+/*
+ * Loads the dgap.conf config file from the user.
+ */
+void dgap_do_config_load(uchar __user *uaddr, int len)
+{
+       int orig_len = len;
+       char *to_addr;
+       uchar __user *from_addr = uaddr;
+       char buf[U2BSIZE];
+       int n;
+
+       to_addr = dgap_config_buf = dgap_driver_kzmalloc(len + 1, GFP_ATOMIC);
+       if (!dgap_config_buf) {
+               DPR_INIT(("dgap_do_config_load - unable to allocate memory for file\n"));
+               dgap_driver_state = DRIVER_NEED_CONFIG_LOAD;
+               return;
+       }
+
+       n = U2BSIZE;
+       while (len) {
+
+               if (n > len)
+                       n = len;
+
+               if (copy_from_user((char *) &buf, from_addr, n) == -1 )
+                       return;
+
+               /* Copy data from buffer to kernel memory */
+               memcpy(to_addr, buf, n);
+
+               /* increment counts */
+               len -= n;
+               to_addr += n;
+               from_addr += n;
+               n = U2BSIZE;
+        }
+
+       dgap_config_buf[orig_len] = '\0';
+
+       to_addr = dgap_config_buf;
+       dgap_parsefile(&to_addr, TRUE);
+
+       DPR_INIT(("dgap_config_load() finish\n"));
+
+       return;
+}
+
+
+int dgap_after_config_loaded(void)
+{
+       int i = 0;
+       int rc = 0;
+
+       /*
+        * Register our ttys, now that we have the config loaded.
+        */
+       for (i = 0; i < dgap_NumBoards; ++i) {
+
+               /*
+                * Initialize KME waitqueues...
+                */
+               init_waitqueue_head(&(dgap_Board[i]->kme_wait));
+
+               /*
+                * allocate flip buffer for board.
+                */
+               dgap_Board[i]->flipbuf = dgap_driver_kzmalloc(MYFLIPLEN, GFP_ATOMIC);
+               dgap_Board[i]->flipflagbuf = dgap_driver_kzmalloc(MYFLIPLEN, GFP_ATOMIC);
+
+               dgap_proc_register_basic_postscan(i);
+       }
+
+       return (rc);
+}
+
+
+
+/*=======================================================================
+ *
+ *      usertoboard - copy from user space to board space.
+ *
+ *=======================================================================*/
+static int dgap_usertoboard(struct board_t *brd, char *to_addr, char __user *from_addr, int len)
+{
+       char buf[U2BSIZE];
+       int n = U2BSIZE;
+
+       if (!brd || brd->magic != DGAP_BOARD_MAGIC)
+               return(-EFAULT);
+
+       while (len) {
+               if (n > len)
+                       n = len;
+
+               if (copy_from_user((char *) &buf, from_addr, n) == -1 ) {
+                       return(-EFAULT);
+               }
+
+               /* Copy data from buffer to card memory */
+               memcpy_toio(to_addr, buf, n);
+
+               /* increment counts */
+               len -= n;
+               to_addr += n;
+               from_addr += n;   
+               n = U2BSIZE;
+        }
+       return(0);
+}
+
+
+/*
+ * Copies the BIOS code from the user to the board,
+ * and starts the BIOS running.
+ */
+void dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len)
+{
+       uchar *addr;
+       uint offset;
+       int i;
+
+       if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+               return;
+
+       DPR_INIT(("dgap_do_bios_load() start\n"));
+
+       addr = brd->re_map_membase;
+
+       /*
+        * clear POST area
+        */
+       for (i = 0; i < 16; i++)
+               writeb(0, addr + POSTAREA + i);
+                                
+       /*
+        * Download bios
+        */
+       offset = 0x1000;
+       if (dgap_usertoboard(brd, addr + offset, ubios, len) == -1 ) {
+               brd->state = BOARD_FAILED;
+               brd->dpastatus = BD_NOFEP;
+               return;
+       }
+
+       writel(0x0bf00401, addr);
+       writel(0, (addr + 4));
+
+       /* Clear the reset, and change states. */
+       writeb(FEPCLR, brd->re_map_port);
+       brd->state = WAIT_BIOS_LOAD;
+}
+
+
+/*
+ * Checks to see if the BIOS completed running on the card.
+ */
+static void dgap_do_wait_for_bios(struct board_t *brd)
+{
+       uchar *addr;
+       u16 word;
+
+       if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+               return;
+
+       addr = brd->re_map_membase;
+       word = readw(addr + POSTAREA);
+
+       /* Check to see if BIOS thinks board is good. (GD). */
+       if (word == *(u16 *) "GD") {
+               DPR_INIT(("GOT GD in memory, moving states.\n"));
+               brd->state = FINISHED_BIOS_LOAD;
+               return;
+       }
+
+       /* Give up on board after too long of time taken */
+       if (brd->wait_for_bios++ > 5000) {
+               u16 err1 = readw(addr + SEQUENCE);
+               u16 err2 = readw(addr + ERROR);
+               APR(("***WARNING*** %s failed diagnostics.  Error #(%x,%x).\n",
+                       brd->name, err1, err2));
+               brd->state = BOARD_FAILED;
+               brd->dpastatus = BD_NOFEP;
+       }
+}
+
+
+/*
+ * Copies the FEP code from the user to the board,
+ * and starts the FEP running.
+ */
+void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len)
+{
+       uchar *addr;
+       uint offset;
+
+       if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+               return;
+
+       addr = brd->re_map_membase;
+
+       DPR_INIT(("dgap_do_fep_load() for board %s : start\n", brd->name));
+
+       /*
+        * Download FEP
+        */
+       offset = 0x1000;
+       if (dgap_usertoboard(brd, addr + offset, ufep, len) == -1 ) {
+               brd->state = BOARD_FAILED;
+               brd->dpastatus = BD_NOFEP;
+               return;
+       }
+
+       /*
+        * If board is a concentrator product, we need to give
+        * it its config string describing how the concentrators look.
+        */
+       if ((brd->type == PCX) || (brd->type == PEPC)) {
+               uchar string[100];
+               uchar *config, *xconfig;
+               int i = 0;
+
+               xconfig = dgap_create_config_string(brd, string);
+
+               /* Write string to board memory */
+               config = addr + CONFIG;
+               for (; i < CONFIGSIZE; i++, config++, xconfig++) {
+                       writeb(*xconfig, config);
+                       if ((*xconfig & 0xff) == 0xff)
+                               break;
+               }
+       }
+
+       writel(0xbfc01004, (addr + 0xc34));
+       writel(0x3, (addr + 0xc30));
+
+       /* change states. */
+       brd->state = WAIT_FEP_LOAD;
+
+       DPR_INIT(("dgap_do_fep_load() for board %s : finish\n", brd->name));
+
+}
+
+
+/*
+ * Waits for the FEP to report thats its ready for us to use.
+ */
+static void dgap_do_wait_for_fep(struct board_t *brd)
+{
+       uchar *addr;
+       u16 word;
+
+       if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+               return;
+
+       addr = brd->re_map_membase;
+
+       DPR_INIT(("dgap_do_wait_for_fep() for board %s : start. addr: %p\n", brd->name, addr));
+
+       word = readw(addr + FEPSTAT);
+
+       /* Check to see if FEP is up and running now. */
+       if (word == *(u16 *) "OS") {
+               DPR_INIT(("GOT OS in memory for board %s, moving states.\n", brd->name));
+               brd->state = FINISHED_FEP_LOAD;
+
+               /*
+                * Check to see if the board can support FEP5+ commands.
+                */
+               word = readw(addr + FEP5_PLUS);
+               if (word == *(u16 *) "5A") {
+                       DPR_INIT(("GOT 5A in memory for board %s, board supports extended FEP5 commands.\n", brd->name));
+                       brd->bd_flags |= BD_FEP5PLUS;
+               }
+
+               return;
+       }
+
+       /* Give up on board after too long of time taken */
+       if (brd->wait_for_fep++ > 5000) {
+               u16 err1 = readw(addr + SEQUENCE);
+               u16 err2 = readw(addr + ERROR);
+               APR(("***WARNING*** FEPOS for %s not functioning.  Error #(%x,%x).\n",
+                       brd->name, err1, err2));
+               brd->state = BOARD_FAILED;
+               brd->dpastatus = BD_NOFEP;
+       }
+
+       DPR_INIT(("dgap_do_wait_for_fep() for board %s : finish\n", brd->name));
+}
+
+
+/*
+ * Physically forces the FEP5 card to reset itself.
+ */
+static void dgap_do_reset_board(struct board_t *brd)
+{
+       uchar check;
+       u32 check1;
+       u32 check2;
+       int i = 0;
+
+       if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase || !brd->re_map_port) {
+               DPR_INIT(("dgap_do_reset_board() start. bad values. brd: %p mem: %p io: %p\n", 
+                       brd, brd ? brd->re_map_membase : 0, brd ? brd->re_map_port : 0));
+               return;
+       }
+
+       DPR_INIT(("dgap_do_reset_board() start. io: %p\n", brd->re_map_port));
+
+       /* FEPRST does not vary among supported boards */
+       writeb(FEPRST, brd->re_map_port);
+
+       for (i = 0; i <= 1000; i++) {
+               check = readb(brd->re_map_port) & 0xe;
+               if (check == FEPRST)
+                       break;
+               udelay(10);
+
+       }
+       if (i > 1000) {
+               APR(("*** WARNING *** Board not resetting...  Failing board.\n"));
+               brd->state = BOARD_FAILED;
+               brd->dpastatus = BD_NOFEP;
+               goto failed;
+       }
+
+       /*
+        * Make sure there really is memory out there.
+        */
+       writel(0xa55a3cc3, (brd->re_map_membase + LOWMEM));
+       writel(0x5aa5c33c, (brd->re_map_membase + HIGHMEM));
+       check1 = readl(brd->re_map_membase + LOWMEM);
+       check2 = readl(brd->re_map_membase + HIGHMEM);
+
+       if ((check1 != 0xa55a3cc3) || (check2 != 0x5aa5c33c)) {
+               APR(("*** Warning *** No memory at %p for board.\n", brd->re_map_membase));
+               brd->state = BOARD_FAILED;
+               brd->dpastatus = BD_NOFEP;
+               goto failed;
+       }
+
+       if (brd->state != BOARD_FAILED)
+               brd->state = FINISHED_RESET;
+
+failed:
+       DPR_INIT(("dgap_do_reset_board() finish\n"));
+}
+
+
+/*
+ * Sends a concentrator image into the FEP5 board.
+ */
+void dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len)
+{
+       char *vaddr;
+       u16 offset = 0;
+       struct downld_t *to_dp;
+
+       if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
+               return;
+
+       vaddr = brd->re_map_membase;
+
+       offset = readw((u16 *) (vaddr + DOWNREQ));
+       to_dp = (struct downld_t *) (vaddr + (int) offset);
+
+       /*
+        * The image was already read into kernel space,
+        * we do NOT need a user space read here
+        */
+       memcpy_toio((char *) to_dp, uaddr, sizeof(struct downld_t));
+
+       /* Tell card we have data for it */
+       writew(0, vaddr + (DOWNREQ));
+
+       brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
+}
+
+
+#define EXPANSION_ROM_SIZE     (64 * 1024)
+#define FEP5_ROM_MAGIC         (0xFEFFFFFF)
+
+static void dgap_get_vpd(struct board_t *brd)
+{
+       u32 magic;
+       u32 base_offset;
+       u16 rom_offset;
+       u16 vpd_offset;
+       u16 image_length;
+       u16 i;
+       uchar byte1;
+       uchar byte2;
+
+       /*
+        * Poke the magic number at the PCI Rom Address location.
+        * If VPD is supported, the value read from that address
+        * will be non-zero.
+        */
+       magic = FEP5_ROM_MAGIC;
+       pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
+       pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
+
+       /* VPD not supported, bail */
+       if (!magic)
+               return;
+
+       /*
+        * To get to the OTPROM memory, we have to send the boards base
+         * address or'ed with 1 into the PCI Rom Address location.
+        */
+       magic = brd->membase | 0x01;
+       pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
+       pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
+
+       byte1 = readb(brd->re_map_membase);
+       byte2 = readb(brd->re_map_membase + 1);
+
+       /*
+        * If the board correctly swapped to the OTPROM memory,
+        * the first 2 bytes (header) should be 0x55, 0xAA
+        */
+       if (byte1 == 0x55 && byte2 == 0xAA) {
+
+               base_offset = 0;
+
+               /*
+                * We have to run through all the OTPROM memory looking
+                * for the VPD offset.
+                */
+               while (base_offset <= EXPANSION_ROM_SIZE) {
+                
+                       /*
+                        * Lots of magic numbers here.
+                        *
+                        * The VPD offset is located inside the ROM Data Structure.
+                        * We also have to remember the length of each
+                        * ROM Data Structure, so we can "hop" to the next
+                        * entry if the VPD isn't in the current
+                        * ROM Data Structure.
+                        */
+                       rom_offset = readw(brd->re_map_membase + base_offset + 0x18);
+                       image_length = readw(brd->re_map_membase + rom_offset + 0x10) * 512;
+                       vpd_offset = readw(brd->re_map_membase + rom_offset + 0x08);
+
+                       /* Found the VPD entry */
+                       if (vpd_offset)
+                               break;
+
+                       /* We didn't find a VPD entry, go to next ROM entry. */
+                       base_offset += image_length;
+
+                       byte1 = readb(brd->re_map_membase + base_offset);
+                       byte2 = readb(brd->re_map_membase + base_offset + 1);
+
+                       /*
+                        * If the new ROM offset doesn't have 0x55, 0xAA
+                        * as its header, we have run out of ROM.
+                        */
+                       if (byte1 != 0x55 || byte2 != 0xAA)
+                               break;
+               }
+
+               /*
+                * If we have a VPD offset, then mark the board
+                * as having a valid VPD, and copy VPDSIZE (512) bytes of
+                * that VPD to the buffer we have in our board structure.
+                */
+               if (vpd_offset) {
+                       brd->bd_flags |= BD_HAS_VPD;
+                       for (i = 0; i < VPDSIZE; i++)
+                               brd->vpd[i] = readb(brd->re_map_membase + vpd_offset + i);
+               }
+       }
+
+       /*
+        * We MUST poke the magic number at the PCI Rom Address location again.
+        * This makes the card report the regular board memory back to us,
+        * rather than the OTPROM memory.
+        */
+       magic = FEP5_ROM_MAGIC;
+       pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
+}
+
+
+/*
+ * Our board poller function.
+ */
+void dgap_poll_tasklet(unsigned long data)
+{
+        struct board_t *bd = (struct board_t *) data;
+       ulong  lock_flags;
+       ulong  lock_flags2;
+       char *vaddr;
+       u16 head, tail;
+       u16 *chk_addr;
+       u16 check = 0;
+
+       if (!bd || (bd->magic != DGAP_BOARD_MAGIC)) {
+               APR(("dgap_poll_tasklet() - NULL or bad bd.\n"));
+               return;
+       }
+
+       if (bd->inhibit_poller)
+               return;
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+
+       vaddr = bd->re_map_membase;
+
+       /*
+        * If board is ready, parse deeper to see if there is anything to do.
+        */
+       if (bd->state == BOARD_READY) {
+
+               struct ev_t *eaddr = NULL;
+
+               if (!bd->re_map_membase) {
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       return;
+               }
+               if (!bd->re_map_port) {
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       return;
+               }
+
+               if (!bd->nasync) {
+                       goto out;
+               }
+
+               /*
+                * If this is a CX or EPCX, we need to see if the firmware
+                * is requesting a concentrator image from us.
+                */
+               if ((bd->type == PCX) || (bd->type == PEPC)) {
+                       chk_addr = (u16 *) (vaddr + DOWNREQ);
+                       check = readw(chk_addr);
+                       /* Nonzero if FEP is requesting concentrator image. */
+                       if (check) {
+                               if (bd->conc_dl_status == NO_PENDING_CONCENTRATOR_REQUESTS)
+                                       bd->conc_dl_status = NEED_CONCENTRATOR;
+                               /*
+                                * Signal downloader, its got some work to do.
+                                */
+                               DGAP_LOCK(dgap_dl_lock, lock_flags2);
+                               if (dgap_dl_action != 1) {
+                                       dgap_dl_action = 1;
+                                       wake_up_interruptible(&dgap_dl_wait);
+                               }
+                               DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+
+                       }
+               }
+
+               eaddr = (struct ev_t *) (vaddr + EVBUF);
+
+               /* Get our head and tail */
+               head = readw(&(eaddr->ev_head));
+               tail = readw(&(eaddr->ev_tail));
+
+               /*
+                * If there is an event pending. Go service it.
+                */
+               if (head != tail) {
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       dgap_event(bd);
+                       DGAP_LOCK(bd->bd_lock, lock_flags);
+               }
+
+out:
+               /*
+                * If board is doing interrupts, ACK the interrupt.
+                */
+               if (bd && bd->intr_running) {
+                       readb(bd->re_map_port + 2);
+               }
+
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return;
+       }
+
+       /* Our state machine to get the board up and running */
+
+       /* Reset board */
+       if (bd->state == NEED_RESET) {
+
+               /* Get VPD info */
+               dgap_get_vpd(bd);
+
+               dgap_do_reset_board(bd);
+       }
+
+       /* Move to next state */
+       if (bd->state == FINISHED_RESET) {
+               bd->state = NEED_CONFIG;
+       }
+
+       if (bd->state == NEED_CONFIG) {
+               /*
+                * Match this board to a config the user created for us.
+                */
+               bd->bd_config = dgap_find_config(bd->type, bd->pci_bus, bd->pci_slot);
+
+               /*
+                * Because the 4 port Xr products share the same PCI ID
+                * as the 8 port Xr products, if we receive a NULL config
+                * back, and this is a PAPORT8 board, retry with a
+                * PAPORT4 attempt as well.
+                */
+               if (bd->type == PAPORT8 && !bd->bd_config) {
+                       bd->bd_config = dgap_find_config(PAPORT4, bd->pci_bus, bd->pci_slot);
+               }
+
+               /*
+                * Register the ttys (if any) into the kernel.
+                */
+               if (bd->bd_config) {
+                       bd->state = FINISHED_CONFIG;
+               }
+               else {
+                       bd->state = CONFIG_NOT_FOUND;
+               }
+       }
+
+       /* Move to next state */
+       if (bd->state == FINISHED_CONFIG) {
+               bd->state = NEED_DEVICE_CREATION;
+       }
+
+       /* Move to next state */
+       if (bd->state == NEED_DEVICE_CREATION) {
+               /*
+                * Signal downloader, its got some work to do.
+                */
+               DGAP_LOCK(dgap_dl_lock, lock_flags2);
+               if (dgap_dl_action != 1) {
+                       dgap_dl_action = 1;
+                       wake_up_interruptible(&dgap_dl_wait);
+               }
+               DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+       }
+
+       /* Move to next state */
+       if (bd->state == FINISHED_DEVICE_CREATION) {
+               bd->state = NEED_BIOS_LOAD;
+       }
+
+       /* Move to next state */
+       if (bd->state == NEED_BIOS_LOAD) {
+               /*
+                * Signal downloader, its got some work to do.
+                */
+               DGAP_LOCK(dgap_dl_lock, lock_flags2);
+               if (dgap_dl_action != 1) {
+                       dgap_dl_action = 1;
+                       wake_up_interruptible(&dgap_dl_wait);
+               }
+               DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+       }
+
+       /* Wait for BIOS to test board... */
+       if (bd->state == WAIT_BIOS_LOAD) {
+               dgap_do_wait_for_bios(bd);
+       }
+
+       /* Move to next state */
+       if (bd->state == FINISHED_BIOS_LOAD) {
+               bd->state = NEED_FEP_LOAD;
+
+               /*
+                * Signal downloader, its got some work to do.
+                */
+               DGAP_LOCK(dgap_dl_lock, lock_flags2);
+               if (dgap_dl_action != 1) {
+                       dgap_dl_action = 1;
+                       wake_up_interruptible(&dgap_dl_wait);
+               }
+               DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+       }
+
+       /* Wait for FEP to load on board... */
+       if (bd->state == WAIT_FEP_LOAD) {
+               dgap_do_wait_for_fep(bd);
+       }
+
+
+       /* Move to next state */
+       if (bd->state == FINISHED_FEP_LOAD) {
+
+               /*
+                * Do tty device initialization.
+                */
+               int rc = dgap_tty_init(bd);
+
+               if (rc < 0) {
+                       dgap_tty_uninit(bd);
+                       APR(("Can't init tty devices (%d)\n", rc));
+                       bd->state = BOARD_FAILED;
+                       bd->dpastatus = BD_NOFEP;
+               }
+               else {
+                       bd->state = NEED_PROC_CREATION;
+
+                       /*
+                        * Signal downloader, its got some work to do.
+                        */
+                       DGAP_LOCK(dgap_dl_lock, lock_flags2);
+                       if (dgap_dl_action != 1) {
+                               dgap_dl_action = 1;
+                               wake_up_interruptible(&dgap_dl_wait);
+                       }
+                       DGAP_UNLOCK(dgap_dl_lock, lock_flags2);
+               }
+       }
+
+       /* Move to next state */
+       if (bd->state == FINISHED_PROC_CREATION) {
+
+               bd->state = BOARD_READY;
+               bd->dpastatus = BD_RUNNING;
+
+               /*
+                * If user requested the board to run in interrupt mode,
+                * go and set it up on the board.
+                */
+               if (bd->intr_used) {
+                       writew(1, (bd->re_map_membase + ENABLE_INTR));
+                       /*
+                        * Tell the board to poll the UARTS as fast as possible.
+                        */
+                       writew(FEPPOLL_MIN, (bd->re_map_membase + FEPPOLL));
+                       bd->intr_running = 1;
+               }
+
+               /* Wake up anyone waiting for board state to change to ready */
+               wake_up_interruptible(&bd->state_wait);
+       }
+
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+}
+
+
+/*=======================================================================
+ *
+ *      dgap_cmdb - Sends a 2 byte command to the FEP.
+ *
+ *              ch      - Pointer to channel structure.
+ *              cmd     - Command to be sent.
+ *              byte1   - Integer containing first byte to be sent.
+ *              byte2   - Integer containing second byte to be sent.
+ *              ncmds   - Wait until ncmds or fewer cmds are left
+ *                        in the cmd buffer before returning.
+ *
+ *=======================================================================*/
+void dgap_cmdb(struct channel_t *ch, uchar cmd, uchar byte1, uchar byte2, uint ncmds)
+{                       
+       char            *vaddr = NULL;
+       struct cm_t     *cm_addr = NULL;
+       uint            count;
+       uint            n;
+       u16             head;
+        u16            tail;
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       /*
+        * Check if board is still alive.
+        */
+       if (ch->ch_bd->state == BOARD_FAILED) {
+               DPR_CORE(("%s:%d board is in failed state.\n", __FILE__, __LINE__));
+               return;
+        }               
+
+       /*
+        * Make sure the pointers are in range before
+        * writing to the FEP memory.
+        */
+       vaddr = ch->ch_bd->re_map_membase;
+
+       if (!vaddr)
+               return;
+
+       cm_addr = (struct cm_t *) (vaddr + CMDBUF);
+       head = readw(&(cm_addr->cm_head));
+
+       /* 
+        * Forget it if pointers out of range.
+        */
+       if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
+               DPR_CORE(("%s:%d pointers out of range, failing board!\n", __FILE__, __LINE__));
+               ch->ch_bd->state = BOARD_FAILED;
+               return; 
+       }
+
+       /*
+        * Put the data in the circular command buffer.
+        */
+       writeb(cmd, (char *) (vaddr + head + CMDSTART + 0));
+       writeb((uchar) ch->ch_portnum, (char *) (vaddr + head + CMDSTART + 1));
+       writeb(byte1, (char *) (vaddr + head + CMDSTART + 2));
+       writeb(byte2, (char *) (vaddr + head + CMDSTART + 3));
+
+       head = (head + 4) & (CMDMAX - CMDSTART - 4);
+
+       writew(head, &(cm_addr->cm_head));
+
+       /*
+        * Wait if necessary before updating the head  
+        * pointer to limit the number of outstanding
+        * commands to the FEP.   If the time spent waiting
+        * is outlandish, declare the FEP dead.
+        */
+       for (count = dgap_count ;;) {
+
+               head = readw(&(cm_addr->cm_head));
+               tail = readw(&(cm_addr->cm_tail));
+
+               n = (head - tail) & (CMDMAX - CMDSTART - 4);
+
+               if (n <= ncmds * sizeof(struct cm_t))
+                       break;
+
+               if (--count == 0) {
+                       DPR_CORE(("%s:%d failing board.\n",__FILE__, __LINE__));
+                       ch->ch_bd->state = BOARD_FAILED;
+                       return;
+               }
+               udelay(10);
+       }  
+}
+
+
+/*=======================================================================
+ *
+ *      dgap_cmdw - Sends a 1 word command to the FEP.
+ *      
+ *              ch      - Pointer to channel structure.
+ *              cmd     - Command to be sent.
+ *              word    - Integer containing word to be sent.
+ *              ncmds   - Wait until ncmds or fewer cmds are left
+ *                        in the cmd buffer before returning.
+ *
+ *=======================================================================*/
+void dgap_cmdw(struct channel_t *ch, uchar cmd, u16 word, uint ncmds)
+{
+       char            *vaddr = NULL;
+       struct cm_t     *cm_addr = NULL;
+       uint            count;
+       uint            n;
+       u16             head;
+       u16             tail;
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       /*
+        * Check if board is still alive.
+        */
+       if (ch->ch_bd->state == BOARD_FAILED) {
+               DPR_CORE(("%s:%d board is failed!\n", __FILE__, __LINE__));
+               return;
+       }
+
+       /*
+        * Make sure the pointers are in range before
+        * writing to the FEP memory.
+        */
+       vaddr = ch->ch_bd->re_map_membase;
+       if (!vaddr)
+               return;
+
+       cm_addr = (struct cm_t *) (vaddr + CMDBUF);
+       head = readw(&(cm_addr->cm_head));
+
+       /* 
+        * Forget it if pointers out of range.
+        */
+       if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
+               DPR_CORE(("%s:%d Pointers out of range.  Failing board.\n",__FILE__, __LINE__));
+               ch->ch_bd->state = BOARD_FAILED;
+               return;
+       }
+
+       /*
+        * Put the data in the circular command buffer.
+        */
+       writeb(cmd, (char *) (vaddr + head + CMDSTART + 0));
+       writeb((uchar) ch->ch_portnum, (char *) (vaddr + head + CMDSTART + 1));
+       writew((u16) word, (char *) (vaddr + head + CMDSTART + 2));
+
+       head = (head + 4) & (CMDMAX - CMDSTART - 4);
+
+       writew(head, &(cm_addr->cm_head));
+
+       /*
+        * Wait if necessary before updating the head
+        * pointer to limit the number of outstanding  
+        * commands to the FEP.   If the time spent waiting
+        * is outlandish, declare the FEP dead.
+        */
+       for (count = dgap_count ;;) {
+
+               head = readw(&(cm_addr->cm_head));
+               tail = readw(&(cm_addr->cm_tail));
+
+               n = (head - tail) & (CMDMAX - CMDSTART - 4);
+
+               if (n <= ncmds * sizeof(struct cm_t))
+                       break;
+
+               if (--count == 0) {
+                       DPR_CORE(("%s:%d Failing board.\n",__FILE__, __LINE__));
+                       ch->ch_bd->state = BOARD_FAILED;
+                       return;
+               }
+               udelay(10);
+       }  
+}
+
+
+
+/*=======================================================================
+ *
+ *      dgap_cmdw_ext - Sends a extended word command to the FEP.
+ *      
+ *              ch      - Pointer to channel structure.
+ *              cmd     - Command to be sent.
+ *              word    - Integer containing word to be sent.
+ *              ncmds   - Wait until ncmds or fewer cmds are left
+ *                        in the cmd buffer before returning.
+ *
+ *=======================================================================*/
+static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds)
+{
+       char            *vaddr = NULL;
+       struct cm_t     *cm_addr = NULL;
+       uint            count;
+       uint            n;
+       u16             head;
+       u16             tail;
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       /*
+        * Check if board is still alive.
+        */
+       if (ch->ch_bd->state == BOARD_FAILED) {
+               DPR_CORE(("%s:%d board is failed!\n", __FILE__, __LINE__));
+               return;
+       }
+
+       /*
+        * Make sure the pointers are in range before
+        * writing to the FEP memory.
+        */
+       vaddr = ch->ch_bd->re_map_membase;
+       if (!vaddr)
+               return;
+
+       cm_addr = (struct cm_t *) (vaddr + CMDBUF);
+       head = readw(&(cm_addr->cm_head));
+
+       /* 
+        * Forget it if pointers out of range.
+        */
+       if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
+               DPR_CORE(("%s:%d Pointers out of range.  Failing board.\n",__FILE__, __LINE__));
+               ch->ch_bd->state = BOARD_FAILED;
+               return;
+       }
+
+       /*
+        * Put the data in the circular command buffer.
+        */
+
+       /* Write an FF to tell the FEP that we want an extended command */
+       writeb((uchar) 0xff, (char *) (vaddr + head + CMDSTART + 0));
+
+       writeb((uchar) ch->ch_portnum, (uchar *) (vaddr + head + CMDSTART + 1));
+       writew((u16) cmd, (char *) (vaddr + head + CMDSTART + 2));
+
+       /*
+        * If the second part of the command won't fit,
+        * put it at the beginning of the circular buffer.
+        */
+       if (((head + 4) >= ((CMDMAX - CMDSTART)) || (head & 03))) {
+               writew((u16) word, (char *) (vaddr + CMDSTART));
+       } else {
+               writew((u16) word, (char *) (vaddr + head + CMDSTART + 4));
+       }
+
+       head = (head + 8) & (CMDMAX - CMDSTART - 4);
+
+       writew(head, &(cm_addr->cm_head));
+
+       /*
+        * Wait if necessary before updating the head
+        * pointer to limit the number of outstanding  
+        * commands to the FEP.   If the time spent waiting
+        * is outlandish, declare the FEP dead.
+        */
+       for (count = dgap_count ;;) {
+
+               head = readw(&(cm_addr->cm_head));
+               tail = readw(&(cm_addr->cm_tail));
+
+               n = (head - tail) & (CMDMAX - CMDSTART - 4);
+
+               if (n <= ncmds * sizeof(struct cm_t))
+                       break;
+
+               if (--count == 0) {
+                       DPR_CORE(("%s:%d Failing board.\n",__FILE__, __LINE__));
+                       ch->ch_bd->state = BOARD_FAILED;
+                       return;
+               }
+               udelay(10);
+       }  
+}
+
+
+/*=======================================================================
+ *
+ *      dgap_wmove - Write data to FEP buffer.
+ *
+ *              ch      - Pointer to channel structure.
+ *              buf     - Poiter to characters to be moved.
+ *              cnt     - Number of characters to move.
+ *
+ *=======================================================================*/
+void dgap_wmove(struct channel_t *ch, char *buf, uint cnt)
+{
+       int    n;
+       char   *taddr;
+       struct bs_t    *bs;
+       u16    head;
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+       /*
+        * Check parameters.
+        */
+       bs   = ch->ch_bs;
+       head = readw(&(bs->tx_head));
+
+       /*
+        * If pointers are out of range, just return.
+        */
+       if ((cnt > ch->ch_tsize) || (unsigned)(head - ch->ch_tstart) >= ch->ch_tsize) {
+               DPR_CORE(("%s:%d pointer out of range", __FILE__, __LINE__));
+               return;
+       }
+
+       /*
+        * If the write wraps over the top of the circular buffer,
+        * move the portion up to the wrap point, and reset the
+        * pointers to the bottom.
+        */
+       n = ch->ch_tstart + ch->ch_tsize - head;
+
+       if (cnt >= n) {
+               cnt -= n;
+               taddr = ch->ch_taddr + head;
+               memcpy_toio(taddr, buf, n);
+               head = ch->ch_tstart;
+               buf += n;
+       }
+
+       /*
+        * Move rest of data.
+        */
+       taddr = ch->ch_taddr + head;
+       n = cnt;
+       memcpy_toio(taddr, buf, n);
+       head += cnt;
+
+       writew(head, &(bs->tx_head));
+}
+
+/*
+ * Retrives the current custom baud rate from FEP memory,
+ * and returns it back to the user.
+ * Returns 0 on error.
+ */
+uint dgap_get_custom_baud(struct channel_t *ch)
+{
+       uchar *vaddr;
+       ulong offset = 0;
+       uint value = 0;
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) {
+               return (0);
+       }
+
+       if (!ch->ch_bd || ch->ch_bd->magic != DGAP_BOARD_MAGIC) {
+               return (0);
+       }
+
+       if (!(ch->ch_bd->bd_flags & BD_FEP5PLUS))
+               return (0);
+
+       vaddr = ch->ch_bd->re_map_membase;
+
+       if (!vaddr)
+               return (0);
+
+       /*
+        * Go get from fep mem, what the fep
+        * believes the custom baud rate is. 
+        */
+       offset = ((((*(unsigned short *)(vaddr + ECS_SEG)) << 4) +  
+               (ch->ch_portnum * 0x28) + LINE_SPEED));
+
+       value = readw(vaddr + offset);
+       return (value);
+}
+
+
+/*
+ * Calls the firmware to reset this channel.
+ */
+void dgap_firmware_reset_port(struct channel_t *ch)
+{
+       dgap_cmdb(ch, CHRESET, 0, 0, 0);
+
+       /*
+        * Now that the channel is reset, we need to make sure
+        * all the current settings get reapplied to the port
+        * in the firmware.
+        *
+        * So we will set the driver's cache of firmware
+        * settings all to 0, and then call param.
+        */
+       ch->ch_fepiflag = 0;
+       ch->ch_fepcflag = 0;
+       ch->ch_fepoflag = 0;
+       ch->ch_fepstartc = 0;
+       ch->ch_fepstopc = 0;
+       ch->ch_fepastartc = 0;
+       ch->ch_fepastopc = 0;
+       ch->ch_mostat = 0;
+       ch->ch_hflow = 0;
+}
+
+
+/*=======================================================================
+ *      
+ *      dgap_param - Set Digi parameters.
+ *
+ *              struct tty_struct *     - TTY for port.
+ *
+ *=======================================================================*/
+int dgap_param(struct tty_struct *tty)
+{
+       struct ktermios *ts;
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct bs_t   *bs;
+       struct un_t   *un;
+       u16     head;
+       u16     cflag;
+       u16     iflag;
+       uchar   mval;
+       uchar   hflow;
+
+       if (!tty || tty->magic != TTY_MAGIC) {
+               return (-ENXIO);
+       }
+
+       un = (struct un_t *) tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC) {
+               return (-ENXIO);
+       }
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) {
+               return (-ENXIO);
+       }
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC) {
+               return (-ENXIO);
+       }
+
+        bs = ch->ch_bs;
+       if (bs == 0) {
+               return (-ENXIO);
+       }
+
+       DPR_PARAM(("param start: tdev: %x cflags: %x oflags: %x iflags: %x\n",
+               ch->ch_tun.un_dev, ch->ch_c_cflag, ch->ch_c_oflag, ch->ch_c_iflag));
+
+       ts = tty->termios;
+
+       /*
+        * If baud rate is zero, flush queues, and set mval to drop DTR.
+        */
+       if ((ch->ch_c_cflag & (CBAUD)) == 0) {
+
+               /* flush rx */
+               head = readw(&(ch->ch_bs->rx_head));
+               writew(head, &(ch->ch_bs->rx_tail));
+
+               /* flush tx */
+               head = readw(&(ch->ch_bs->tx_head));
+               writew(head, &(ch->ch_bs->tx_tail));
+
+               ch->ch_flags |= (CH_BAUD0);
+
+               /* Drop RTS and DTR */
+               ch->ch_mval &= ~(D_RTS(ch)|D_DTR(ch));
+               mval = D_DTR(ch) | D_RTS(ch);
+               ch->ch_baud_info = 0;
+
+       } else if (ch->ch_custom_speed && (bd->bd_flags & BD_FEP5PLUS)) {
+               /*
+                * Tell the fep to do the command
+                */
+
+               DPR_PARAM(("param: Want %d speed\n", ch->ch_custom_speed));
+
+               dgap_cmdw_ext(ch, 0xff01, ch->ch_custom_speed, 0);
+
+               /*
+                * Now go get from fep mem, what the fep
+                * believes the custom baud rate is. 
+                */
+               ch->ch_baud_info = ch->ch_custom_speed = dgap_get_custom_baud(ch);
+
+               DPR_PARAM(("param: Got %d speed\n", ch->ch_custom_speed));
+
+               /* Handle transition from B0 */   
+               if (ch->ch_flags & CH_BAUD0) {
+                       ch->ch_flags &= ~(CH_BAUD0);
+                       ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
+               }
+               mval = D_DTR(ch) | D_RTS(ch);
+
+       } else {
+               /*
+                * Set baud rate, character size, and parity.
+                */
+
+
+               int iindex = 0;
+               int jindex = 0;
+               int baud = 0;
+
+               ulong bauds[4][16] = {
+                       { /* slowbaud */
+                               0,      50,     75,     110,
+                               134,    150,    200,    300,
+                               600,    1200,   1800,   2400,
+                               4800,   9600,   19200,  38400 },
+                       { /* slowbaud & CBAUDEX */
+                               0,      57600,  115200, 230400,
+                               460800, 150,    200,    921600,
+                               600,    1200,   1800,   2400,
+                               4800,   9600,   19200,  38400 },
+                       { /* fastbaud */
+                               0,      57600,  76800,  115200,
+                               14400,  57600,  230400, 76800,
+                               115200, 230400, 28800,  460800,
+                               921600, 9600,   19200,  38400 },
+                       { /* fastbaud & CBAUDEX */
+                               0,      57600,  115200, 230400,
+                               460800, 150,    200,    921600,
+                               600,    1200,   1800,   2400,
+                               4800,   9600,   19200,  38400 }
+               };
+
+               /* Only use the TXPrint baud rate if the terminal unit is NOT open */
+               if (!(ch->ch_tun.un_flags & UN_ISOPEN) && (un->un_type == DGAP_PRINT))
+                       baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
+               else
+                       baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
+
+               if (ch->ch_c_cflag & CBAUDEX)
+                       iindex = 1;
+
+               if (ch->ch_digi.digi_flags & DIGI_FAST)
+                       iindex += 2;
+
+               jindex = baud;
+
+               if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16)) {
+                       baud = bauds[iindex][jindex];
+               } else {
+                       DPR_IOCTL(("baud indices were out of range (%d)(%d)",
+                               iindex, jindex));
+                       baud = 0;
+               }
+
+               if (baud == 0)  
+                       baud = 9600;
+
+               ch->ch_baud_info = baud;
+
+
+               /*
+                * CBAUD has bit position 0x1000 set these days to indicate Linux
+                * baud rate remap.
+                * We use a different bit assignment for high speed.  Clear this
+                * bit out while grabbing the parts of "cflag" we want.
+                */
+               cflag = ch->ch_c_cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE);
+
+               /*
+                * HUPCL bit is used by FEP to indicate fast baud
+                * table is to be used.
+                */
+               if ((ch->ch_digi.digi_flags & DIGI_FAST) || (ch->ch_c_cflag & CBAUDEX))
+                       cflag |= HUPCL;
+
+
+               if ((ch->ch_c_cflag & CBAUDEX) && !(ch->ch_digi.digi_flags & DIGI_FAST)) {
+               /*
+                * The below code is trying to guarantee that only baud rates
+                * 115200, 230400, 460800, 921600 are remapped.  We use exclusive or
+                * because the various baud rates share common bit positions
+                * and therefore can't be tested for easily.
+                */
+                       tcflag_t tcflag = (ch->ch_c_cflag & CBAUD) | CBAUDEX;
+                       int baudpart = 0;
+
+                       /* Map high speed requests to index into FEP's baud table */
+                       switch (tcflag) {
+                       case B57600 :
+                               baudpart = 1;
+                               break;
+#ifdef B76800
+                       case B76800 :
+                               baudpart = 2;
+                               break;
+#endif
+                       case B115200 :
+                               baudpart = 3;
+                               break;
+                       case B230400 :
+                               baudpart = 9;
+                               break;
+                       case B460800 :
+                               baudpart = 11;
+                               break;
+#ifdef B921600
+                       case B921600 :
+                               baudpart = 12;
+                               break;
+#endif
+                       default:
+                               baudpart = 0;
+                       }
+
+                       if (baudpart)
+                               cflag = (cflag & ~(CBAUD | CBAUDEX)) | baudpart;
+               }
+
+               cflag &= 0xffff;
+
+               if (cflag != ch->ch_fepcflag) {
+                       ch->ch_fepcflag = (u16) (cflag & 0xffff);
+
+                       /* Okay to have channel and board locks held calling this */
+                       dgap_cmdw(ch, SCFLAG, (u16) cflag, 0);
+               }
+
+               /* Handle transition from B0 */   
+               if (ch->ch_flags & CH_BAUD0) {
+                       ch->ch_flags &= ~(CH_BAUD0);
+                       ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
+               }
+               mval = D_DTR(ch) | D_RTS(ch);
+       }
+
+       /*
+        * Get input flags.
+        */
+       iflag = ch->ch_c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP | IXON | IXANY | IXOFF);
+
+       if ((ch->ch_startc == _POSIX_VDISABLE) || (ch->ch_stopc == _POSIX_VDISABLE)) {
+               iflag &= ~(IXON | IXOFF);
+               ch->ch_c_iflag &= ~(IXON | IXOFF);
+       }
+
+       /*
+        * Only the IBM Xr card can switch between
+        * 232 and 422 modes on the fly
+        */
+       if (bd->device == PCI_DEVICE_XR_IBM_DID) {
+               if (ch->ch_digi.digi_flags & DIGI_422)
+                       dgap_cmdb(ch, SCOMMODE, MODE_422, 0, 0);
+               else
+                       dgap_cmdb(ch, SCOMMODE, MODE_232, 0, 0);
+       }
+
+       if (ch->ch_digi.digi_flags & DIGI_ALTPIN)
+               iflag |= IALTPIN ;
+
+       if (iflag != ch->ch_fepiflag) {
+               ch->ch_fepiflag = iflag;
+
+               /* Okay to have channel and board locks held calling this */
+               dgap_cmdw(ch, SIFLAG, (u16) ch->ch_fepiflag, 0);
+       }
+
+       /*
+        * Select hardware handshaking.
+        */
+       hflow = 0;
+
+       if (ch->ch_c_cflag & CRTSCTS) {
+               hflow |= (D_RTS(ch) | D_CTS(ch));
+       }
+       if (ch->ch_digi.digi_flags & RTSPACE)
+               hflow |= D_RTS(ch);
+       if (ch->ch_digi.digi_flags & DTRPACE)
+               hflow |= D_DTR(ch);  
+       if (ch->ch_digi.digi_flags & CTSPACE)
+               hflow |= D_CTS(ch);
+       if (ch->ch_digi.digi_flags & DSRPACE)
+               hflow |= D_DSR(ch);
+       if (ch->ch_digi.digi_flags & DCDPACE)
+               hflow |= D_CD(ch);
+
+       if (hflow != ch->ch_hflow) {
+               ch->ch_hflow = hflow;
+
+               /* Okay to have channel and board locks held calling this */
+               dgap_cmdb(ch, SHFLOW, (uchar) hflow, 0xff, 0);
+        }
+
+
+       /*
+        * Set RTS and/or DTR Toggle if needed, but only if product is FEP5+ based.
+        */
+       if (bd->bd_flags & BD_FEP5PLUS) {
+               u16 hflow2 = 0;
+               if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) {
+                       hflow2 |= (D_RTS(ch));
+               }
+               if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) {
+                       hflow2 |= (D_DTR(ch));
+               }
+
+               dgap_cmdw_ext(ch, 0xff03, hflow2, 0);
+       }
+
+       /*
+        * Set modem control lines.  
+        */
+
+       mval ^= ch->ch_mforce & (mval ^ ch->ch_mval);
+
+       DPR_PARAM(("dgap_param: mval: %x ch_mforce: %x ch_mval: %x ch_mostat: %x\n",
+               mval, ch->ch_mforce, ch->ch_mval, ch->ch_mostat));
+
+       if (ch->ch_mostat ^ mval) {
+               ch->ch_mostat = mval;
+
+               /* Okay to have channel and board locks held calling this */
+               DPR_PARAM(("dgap_param: Sending SMODEM mval: %x\n", mval));
+               dgap_cmdb(ch, SMODEM, (uchar) mval, D_RTS(ch)|D_DTR(ch), 0);
+       }
+
+       /*
+        * Read modem signals, and then call carrier function.             
+        */
+       ch->ch_mistat = readb(&(bs->m_stat));
+       dgap_carrier(ch);
+
+       /*      
+        * Set the start and stop characters.
+        */
+       if (ch->ch_startc != ch->ch_fepstartc || ch->ch_stopc != ch->ch_fepstopc) {
+               ch->ch_fepstartc = ch->ch_startc;
+               ch->ch_fepstopc =  ch->ch_stopc;
+
+               /* Okay to have channel and board locks held calling this */
+               dgap_cmdb(ch, SFLOWC, ch->ch_fepstartc, ch->ch_fepstopc, 0);
+       }
+
+       /*
+        * Set the Auxiliary start and stop characters.
+        */     
+       if (ch->ch_astartc != ch->ch_fepastartc || ch->ch_astopc != ch->ch_fepastopc) {
+               ch->ch_fepastartc = ch->ch_astartc;
+               ch->ch_fepastopc = ch->ch_astopc;
+
+               /* Okay to have channel and board locks held calling this */
+               dgap_cmdb(ch, SAFLOWC, ch->ch_fepastartc, ch->ch_fepastopc, 0);
+       }
+
+       DPR_PARAM(("param finish\n"));
+
+       return (0);
+}
+
+
+/*
+ * dgap_parity_scan()
+ *
+ * Convert the FEP5 way of reporting parity errors and breaks into
+ * the Linux line discipline way.
+ */
+void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf, unsigned char *fbuf, int *len)
+{
+       int l = *len;
+       int count = 0;
+       unsigned char *in, *cout, *fout;
+       unsigned char c;
+
+       in = cbuf;
+       cout = cbuf;
+       fout = fbuf;
+
+       DPR_PSCAN(("dgap_parity_scan start\n"));
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       while (l--) {
+               c = *in++;
+               switch (ch->pscan_state) {
+               default:
+                       /* reset to sanity and fall through */
+                       ch->pscan_state = 0;
+
+               case 0:
+                       /* No FF seen yet */
+                       if (c == (unsigned char) '\377') {
+                               /* delete this character from stream */
+                               ch->pscan_state = 1;
+                       } else {
+                               *cout++ = c;
+                               *fout++ = TTY_NORMAL;
+                               count += 1;
+                       }
+                       break;
+
+               case 1:
+                       /* first FF seen */
+                       if (c == (unsigned char) '\377') {
+                               /* doubled ff, transform to single ff */
+                               *cout++ = c;
+                               *fout++ = TTY_NORMAL;
+                               count += 1;
+                               ch->pscan_state = 0;
+                       } else {
+                               /* save value examination in next state */
+                               ch->pscan_savechar = c;
+                               ch->pscan_state = 2; 
+                       }
+                       break;
+
+               case 2:
+                       /* third character of ff sequence */
+
+                       *cout++ = c;
+
+                       if (ch->pscan_savechar == 0x0) {
+
+                               if (c == 0x0) {
+                                       DPR_PSCAN(("dgap_parity_scan in 3rd char of ff seq. c: %x setting break.\n", c));
+                                       ch->ch_err_break++;
+                                       *fout++ = TTY_BREAK;
+                               }
+                               else {
+                                       DPR_PSCAN(("dgap_parity_scan in 3rd char of ff seq. c: %x setting parity.\n", c));
+                                       ch->ch_err_parity++;
+                                       *fout++ = TTY_PARITY;
+                               }
+                       }
+                       else {
+                               DPR_PSCAN(("%s:%d Logic Error.\n", __FILE__, __LINE__));
+                       }
+
+                       count += 1;
+                       ch->pscan_state = 0;
+               }       
+       }
+       *len = count;
+       DPR_PSCAN(("dgap_parity_scan finish\n"));
+}
+
+
+
+
+/*=======================================================================
+ *
+ *      dgap_event - FEP to host event processing routine.
+ *
+ *              bd     - Board of current event.
+ *
+ *=======================================================================*/
+static int dgap_event(struct board_t *bd)
+{
+       struct channel_t *ch;
+       ulong           lock_flags;
+       ulong           lock_flags2;
+       struct bs_t     *bs;
+       uchar           *event;
+       uchar           *vaddr = NULL;
+       struct ev_t     *eaddr = NULL;
+       uint            head;
+       uint            tail;
+       int             port;
+       int             reason;
+       int             modem;
+       int             b1;
+
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (-ENXIO);
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+
+       vaddr = bd->re_map_membase;
+
+       if (!vaddr) {
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return (-ENXIO);
+       }
+
+       eaddr = (struct ev_t *) (vaddr + EVBUF);
+
+       /* Get our head and tail */
+       head = readw(&(eaddr->ev_head));
+       tail = readw(&(eaddr->ev_tail));
+
+       /*
+        * Forget it if pointers out of range.
+        */
+
+       if (head >= EVMAX - EVSTART || tail >= EVMAX - EVSTART ||
+           (head | tail) & 03) {
+               DPR_EVENT(("should be calling xxfail %d\n", __LINE__));
+               /* Let go of board lock */
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return (-ENXIO);
+       }
+
+       /*
+        * Loop to process all the events in the buffer.
+        */
+       while (tail != head) {
+
+               /*
+                * Get interrupt information.
+                */
+
+               event = bd->re_map_membase + tail + EVSTART;
+
+               port   = event[0];
+               reason = event[1];
+               modem  = event[2];
+               b1     = event[3];
+
+               DPR_EVENT(("event: jiffies: %ld port: %d reason: %x modem: %x\n",
+                       jiffies, port, reason, modem));
+
+               /*
+                * Make sure the interrupt is valid.
+                */
+                if ( port >= bd->nasync) {
+                       goto next;
+               }
+
+               if (!(reason & (IFMODEM | IFBREAK | IFTLW | IFTEM | IFDATA))) {
+                       goto next;
+               }
+
+               ch = bd->channels[port];
+
+               if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) {
+                       goto next;
+               }
+
+               /*
+                * If we have made it here, the event was valid.
+                * Lock down the channel.
+                */
+               DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+               bs = ch->ch_bs;
+
+               if (!bs) {
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       goto next;
+               }
+
+               /*
+                * Process received data.
+                */
+               if (reason & IFDATA) {
+
+                       /*
+                        * ALL LOCKS *MUST* BE DROPPED BEFORE CALLING INPUT!
+                        * input could send some data to ld, which in turn
+                        * could do a callback to one of our other functions.
+                        */
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+                       dgap_input(ch);
+
+                       DGAP_LOCK(bd->bd_lock, lock_flags);
+                       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+                       if (ch->ch_flags & CH_RACTIVE)
+                               ch->ch_flags |= CH_RENABLE;
+                       else
+                               writeb(1, &(bs->idata));
+
+                       if (ch->ch_flags & CH_RWAIT) {
+                               ch->ch_flags &= ~CH_RWAIT;
+
+                               wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+                       }
+               }
+
+               /*
+                * Process Modem change signals. 
+                */
+               if (reason & IFMODEM) {
+                       ch->ch_mistat = modem;
+                       dgap_carrier(ch);
+               }
+
+               /*
+                * Process break.
+                */
+               if (reason & IFBREAK) {
+
+                       DPR_EVENT(("got IFBREAK\n"));
+
+                       if (ch->ch_tun.un_tty) {
+                               /* A break has been indicated */
+                               ch->ch_err_break++;
+                               tty_buffer_request_room(ch->ch_tun.un_tty, 1);
+                               tty_insert_flip_char(ch->ch_tun.un_tty, 0, TTY_BREAK);
+                               tty_flip_buffer_push(ch->ch_tun.un_tty);
+                       }
+               }
+
+               /*
+                * Process Transmit low.
+                */
+               if (reason & IFTLW) {
+
+                       DPR_EVENT(("event: got low event\n"));
+
+                       if (ch->ch_tun.un_flags & UN_LOW) {
+                               ch->ch_tun.un_flags &= ~UN_LOW;
+
+                               if (ch->ch_tun.un_flags & UN_ISOPEN) {
+                                       if ((ch->ch_tun.un_tty->flags & 
+                                          (1 << TTY_DO_WRITE_WAKEUP)) &&
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               ch->ch_tun.un_tty->ldisc->ops->write_wakeup)
+#else
+                                               ch->ch_tun.un_tty->ldisc.ops->write_wakeup)
+#endif
+                                       {
+                                               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                                               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               (ch->ch_tun.un_tty->ldisc->ops->write_wakeup)(ch->ch_tun.un_tty);
+#else
+                                               (ch->ch_tun.un_tty->ldisc.ops->write_wakeup)(ch->ch_tun.un_tty);
+#endif
+                                               DGAP_LOCK(bd->bd_lock, lock_flags);
+                                               DGAP_LOCK(ch->ch_lock, lock_flags2);
+                                       }
+                                       wake_up_interruptible(&ch->ch_tun.un_tty->write_wait);
+                                       wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+
+                                       DPR_EVENT(("event: Got low event. jiffies: %lu\n", jiffies));
+                               }
+                       }
+
+                       if (ch->ch_pun.un_flags & UN_LOW) {
+                               ch->ch_pun.un_flags &= ~UN_LOW;
+                               if (ch->ch_pun.un_flags & UN_ISOPEN) {
+                                       if ((ch->ch_pun.un_tty->flags & 
+                                          (1 << TTY_DO_WRITE_WAKEUP)) &&
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               ch->ch_pun.un_tty->ldisc->ops->write_wakeup)
+#else
+                                               ch->ch_pun.un_tty->ldisc.ops->write_wakeup)
+#endif
+                                       {
+                                               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                                               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               (ch->ch_pun.un_tty->ldisc->ops->write_wakeup)(ch->ch_pun.un_tty);
+#else
+                                               (ch->ch_pun.un_tty->ldisc.ops->write_wakeup)(ch->ch_pun.un_tty);
+#endif
+                                               DGAP_LOCK(bd->bd_lock, lock_flags);
+                                               DGAP_LOCK(ch->ch_lock, lock_flags2);
+                                       }
+                                       wake_up_interruptible(&ch->ch_pun.un_tty->write_wait);
+                                       wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+                               }
+                       }
+
+                       if (ch->ch_flags & CH_WLOW) {
+                               ch->ch_flags &= ~CH_WLOW;
+                               wake_up_interruptible(&ch->ch_flags_wait);
+                       }
+               }
+
+               /*
+                * Process Transmit empty.
+                */
+               if (reason & IFTEM) {
+                       DPR_EVENT(("event: got empty event\n"));
+
+                       if (ch->ch_tun.un_flags & UN_EMPTY) {
+                               ch->ch_tun.un_flags &= ~UN_EMPTY;
+                               if (ch->ch_tun.un_flags & UN_ISOPEN) {
+                                       if ((ch->ch_tun.un_tty->flags & 
+                                          (1 << TTY_DO_WRITE_WAKEUP)) &&
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               ch->ch_tun.un_tty->ldisc->ops->write_wakeup)
+#else
+                                               ch->ch_tun.un_tty->ldisc.ops->write_wakeup)
+#endif
+                                       {
+                                               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                                               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               (ch->ch_tun.un_tty->ldisc->ops->write_wakeup)(ch->ch_tun.un_tty);
+#else
+                                               (ch->ch_tun.un_tty->ldisc.ops->write_wakeup)(ch->ch_tun.un_tty);
+#endif
+                                               DGAP_LOCK(bd->bd_lock, lock_flags);
+                                               DGAP_LOCK(ch->ch_lock, lock_flags2);
+                                       }
+                                       wake_up_interruptible(&ch->ch_tun.un_tty->write_wait);
+                                       wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+                               }
+                       }
+
+                       if (ch->ch_pun.un_flags & UN_EMPTY) {
+                               ch->ch_pun.un_flags &= ~UN_EMPTY;
+                               if (ch->ch_pun.un_flags & UN_ISOPEN) {
+                                       if ((ch->ch_pun.un_tty->flags & 
+                                          (1 << TTY_DO_WRITE_WAKEUP)) &&
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               ch->ch_pun.un_tty->ldisc->ops->write_wakeup)
+#else
+                                               ch->ch_pun.un_tty->ldisc.ops->write_wakeup)
+#endif
+                                       {
+                                               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                                               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                                               (ch->ch_pun.un_tty->ldisc->ops->write_wakeup)(ch->ch_pun.un_tty);
+#else
+                                               (ch->ch_pun.un_tty->ldisc.ops->write_wakeup)(ch->ch_pun.un_tty);
+#endif
+                                               DGAP_LOCK(bd->bd_lock, lock_flags);
+                                               DGAP_LOCK(ch->ch_lock, lock_flags2);
+                                       }
+                                       wake_up_interruptible(&ch->ch_pun.un_tty->write_wait);
+                                       wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+                               }
+                       }
+
+
+                       if (ch->ch_flags & CH_WEMPTY) {
+                               ch->ch_flags &= ~CH_WEMPTY;
+                               wake_up_interruptible(&ch->ch_flags_wait);
+                       }
+               }
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+
+next:
+               tail = (tail + 4) & (EVMAX - EVSTART - 4);
+       }
+
+       writew(tail, &(eaddr->ev_tail));
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       return (0);
+}               
diff --git a/drivers/staging/dgap/dgap_fep5.h b/drivers/staging/dgap/dgap_fep5.h
new file mode 100644 (file)
index 0000000..3a12ba5
--- /dev/null
@@ -0,0 +1,253 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ *
+ ************************************************************************ 
+ ***   FEP Version 5 dependent definitions
+ ************************************************************************/
+
+#ifndef __DGAP_FEP5_H
+#define __DGAP_FEP5_H
+
+/************************************************************************
+ *      FEP memory offsets
+ ************************************************************************/
+#define START           0x0004L         /* Execution start address      */
+
+#define CMDBUF          0x0d10L         /* Command (cm_t) structure offset */
+#define CMDSTART        0x0400L         /* Start of command buffer      */   
+#define CMDMAX          0x0800L         /* End of command buffer        */
+
+#define EVBUF           0x0d18L         /* Event (ev_t) structure       */
+#define EVSTART         0x0800L         /* Start of event buffer        */
+#define EVMAX           0x0c00L         /* End of event buffer          */
+#define FEP5_PLUS       0x0E40          /* ASCII '5' and ASCII 'A' is here  */
+#define ECS_SEG         0x0E44          /* Segment of the extended channel structure */
+#define LINE_SPEED      0x10            /* Offset into ECS_SEG for line speed   */
+                                        /* if the fep has extended capabilities */
+
+/* BIOS MAGIC SPOTS */
+#define ERROR           0x0C14L                /* BIOS error code              */
+#define SEQUENCE       0x0C12L         /* BIOS sequence indicator      */
+#define POSTAREA       0x0C00L         /* POST complete message area   */
+
+/* FEP MAGIC SPOTS */
+#define FEPSTAT         POSTAREA        /* OS here when FEP comes up    */
+#define NCHAN           0x0C02L         /* number of ports FEP sees     */
+#define PANIC           0x0C10L         /* PANIC area for FEP           */
+#define KMEMEM          0x0C30L         /* Memory for KME use           */   
+#define CONFIG          0x0CD0L         /* Concentrator configuration info */
+#define CONFIGSIZE      0x0030          /* configuration info size      */
+#define DOWNREQ         0x0D00          /* Download request buffer pointer */
+
+#define CHANBUF         0x1000L         /* Async channel (bs_t) structs */
+#define FEPOSSIZE       0x1FFF          /* 8K FEPOS                     */
+
+#define XEMPORTS    0xC02      /*
+                                * Offset in board memory where FEP5 stores
+                                * how many ports it has detected.
+                                * NOTE: FEP5 reports 64 ports when the user
+                                * has the cable in EBI OUT instead of EBI IN.
+                                */
+
+#define FEPCLR      0x00
+#define FEPMEM      0x02 
+#define FEPRST      0x04 
+#define FEPINT      0x08
+#define FEPMASK     0x0e
+#define FEPWIN      0x80
+
+#define LOWMEM      0x0100
+#define HIGHMEM     0x7f00
+
+#define FEPTIMEOUT 200000
+
+#define ENABLE_INTR            0x0e04          /* Enable interrupts flag */
+#define FEPPOLL_MIN            1               /* minimum of 1 millisecond */  
+#define FEPPOLL_MAX            20              /* maximum of 20 milliseconds */
+#define FEPPOLL                        0x0c26          /* Fep event poll interval */   
+
+#define        IALTPIN                 0x0080          /* Input flag to swap DSR <-> DCD */
+
+/************************************************************************ 
+ * Command structure definition.
+ ************************************************************************/
+struct cm_t {
+       volatile unsigned short cm_head;        /* Command buffer head offset   */
+       volatile unsigned short cm_tail;        /* Command buffer tail offset   */
+       volatile unsigned short cm_start;       /* start offset of buffer       */
+       volatile unsigned short cm_max;         /* last offset of buffer        */
+};
+
+/************************************************************************
+ * Event structure definition.
+ ************************************************************************/
+struct ev_t {
+       volatile unsigned short ev_head;        /* Command buffer head offset   */
+       volatile unsigned short ev_tail;        /* Command buffer tail offset   */
+       volatile unsigned short ev_start;       /* start offset of buffer       */
+       volatile unsigned short ev_max;         /* last offset of buffer        */
+};
+
+/************************************************************************
+ * Download buffer structure.
+ ************************************************************************/
+struct downld_t {
+       uchar   dl_type;                /* Header                       */
+       uchar   dl_seq;                 /* Download sequence            */
+       ushort  dl_srev;                /* Software revision number     */
+       ushort  dl_lrev;                /* Low revision number          */
+       ushort  dl_hrev;                /* High revision number         */
+       ushort  dl_seg;                 /* Start segment address        */
+       ushort  dl_size;                /* Number of bytes to download  */
+       uchar   dl_data[1024];          /* Download data                */
+};
+
+/************************************************************************ 
+ * Per channel buffer structure
+ ************************************************************************
+ *              Base Structure Entries Usage Meanings to Host           * 
+ *                                                                      * 
+ *        W = read write        R = read only                           * 
+ *        C = changed by commands only                                  * 
+ *        U = unknown (may be changed w/o notice)                       *
+ ************************************************************************/
+struct bs_t {
+       volatile unsigned short  tp_jmp;        /* Transmit poll jump            */
+       volatile unsigned short  tc_jmp;        /* Cooked procedure jump         */
+       volatile unsigned short  ri_jmp;        /* Not currently used            */
+       volatile unsigned short  rp_jmp;        /* Receive poll jump             */
+
+       volatile unsigned short  tx_seg;        /* W  Tx segment         */
+       volatile unsigned short  tx_head;       /* W  Tx buffer head offset     */
+       volatile unsigned short  tx_tail;       /* R  Tx buffer tail offset     */
+       volatile unsigned short  tx_max;        /* W  Tx buffer size - 1         */
+       volatile unsigned short  rx_seg;        /* W  Rx segment                */
+       volatile unsigned short  rx_head;       /* W  Rx buffer head offset     */
+       volatile unsigned short  rx_tail;       /* R  Rx buffer tail offset     */
+       volatile unsigned short  rx_max;        /* W  Rx buffer size - 1         */
+
+       volatile unsigned short  tx_lw;         /* W  Tx buffer low water mark  */
+       volatile unsigned short  rx_lw;         /* W  Rx buffer low water mark  */
+       volatile unsigned short  rx_hw;         /* W  Rx buffer high water mark */
+       volatile unsigned short  incr;          /* W  Increment to next channel */
+
+       volatile unsigned short  fepdev;        /* U  SCC device base address    */
+       volatile unsigned short  edelay;        /* W  Exception delay            */
+       volatile unsigned short  blen;          /* W  Break length              */
+       volatile unsigned short  btime;         /* U  Break complete time       */
+
+       volatile unsigned short  iflag;         /* C  UNIX input flags          */
+       volatile unsigned short  oflag;         /* C  UNIX output flags         */
+       volatile unsigned short  cflag;         /* C  UNIX control flags        */
+       volatile unsigned short  wfill[13];     /* U  Reserved for expansion    */
+
+       volatile unsigned char   num;           /* U  Channel number            */
+       volatile unsigned char   ract;          /* U  Receiver active counter   */
+       volatile unsigned char   bstat;         /* U  Break status bits         */
+       volatile unsigned char   tbusy;         /* W  Transmit busy             */
+       volatile unsigned char   iempty;        /* W  Transmit empty event enable */
+       volatile unsigned char   ilow;          /* W  Transmit low-water event enable */
+       volatile unsigned char   idata;         /* W  Receive data interrupt enable */
+       volatile unsigned char   eflag;         /* U  Host event flags          */
+
+       volatile unsigned char   tflag;         /* U  Transmit flags            */
+       volatile unsigned char   rflag;         /* U  Receive flags             */
+       volatile unsigned char   xmask;         /* U  Transmit ready flags      */
+       volatile unsigned char   xval;          /* U  Transmit ready value      */
+       volatile unsigned char   m_stat;        /* RC Modem status bits          */
+       volatile unsigned char   m_change;      /* U  Modem bits which changed  */
+       volatile unsigned char   m_int;         /* W  Modem interrupt enable bits */
+       volatile unsigned char   m_last;        /* U  Last modem status         */
+
+       volatile unsigned char   mtran;         /* C   Unreported modem trans   */
+       volatile unsigned char   orun;          /* C   Buffer overrun occurred  */
+       volatile unsigned char   astartc;       /* W   Auxiliary Xon char       */  
+       volatile unsigned char   astopc;        /* W   Auxiliary Xoff char      */
+       volatile unsigned char   startc;        /* W   Xon character             */
+       volatile unsigned char   stopc;         /* W   Xoff character           */
+       volatile unsigned char   vnextc;        /* W   Vnext character           */
+       volatile unsigned char   hflow;         /* C   Software flow control    */
+
+       volatile unsigned char   fillc;         /* U   Delay Fill character     */
+       volatile unsigned char   ochar;         /* U   Saved output character   */
+       volatile unsigned char   omask;         /* U   Output character mask    */
+
+       volatile unsigned char   bfill[13];     /* U   Reserved for expansion   */  
+
+       volatile unsigned char   scc[16];       /* U   SCC registers            */
+};
+
+
+/************************************************************************   
+ * FEP supported functions
+ ************************************************************************/
+#define SRLOW          0xe0            /* Set receive low water        */
+#define SRHIGH         0xe1            /* Set receive high water       */
+#define FLUSHTX                0xe2            /* Flush transmit buffer        */
+#define PAUSETX                0xe3            /* Pause data transmission      */
+#define RESUMETX       0xe4            /* Resume data transmission     */
+#define SMINT          0xe5            /* Set Modem Interrupt          */
+#define SAFLOWC                0xe6            /* Set Aux. flow control chars  */
+#define SBREAK         0xe8            /* Send break                   */
+#define SMODEM         0xe9            /* Set 8530 modem control lines */  
+#define SIFLAG         0xea            /* Set UNIX iflags              */
+#define SFLOWC         0xeb            /* Set flow control characters  */
+#define STLOW          0xec            /* Set transmit low water mark  */
+#define RPAUSE         0xee            /* Pause recieve                */
+#define RRESUME                0xef            /* Resume receive               */  
+#define CHRESET                0xf0            /* Reset Channel                */
+#define BUFSETALL      0xf2            /* Set Tx & Rx buffer size avail*/
+#define SOFLAG         0xf3            /* Set UNIX oflags              */
+#define SHFLOW         0xf4            /* Set hardware handshake       */
+#define SCFLAG         0xf5            /* Set UNIX cflags              */
+#define SVNEXT         0xf6            /* Set VNEXT character          */
+#define SPINTFC                0xfc            /* Reserved                     */
+#define SCOMMODE       0xfd            /* Set RS232/422 mode           */
+
+
+/************************************************************************ 
+ *     Modes for SCOMMODE
+ ************************************************************************/
+#define MODE_232       0x00
+#define MODE_422       0x01
+
+
+/************************************************************************ 
+ *      Event flags.
+ ************************************************************************/
+#define IFBREAK         0x01            /* Break received               */  
+#define IFTLW           0x02            /* Transmit low water           */
+#define IFTEM           0x04            /* Transmitter empty            */
+#define IFDATA          0x08            /* Receive data present         */
+#define IFMODEM         0x20            /* Modem status change          */
+
+/************************************************************************   
+ *      Modem flags
+ ************************************************************************/
+#       define  DM_RTS          0x02    /* Request to send              */
+#       define  DM_CD           0x80    /* Carrier detect               */
+#       define  DM_DSR          0x20    /* Data set ready               */
+#       define  DM_CTS          0x10    /* Clear to send                */
+#       define  DM_RI           0x40    /* Ring indicator               */
+#       define  DM_DTR          0x01    /* Data terminal ready          */
+
+
+#endif
diff --git a/drivers/staging/dgap/dgap_kcompat.h b/drivers/staging/dgap/dgap_kcompat.h
new file mode 100644 (file)
index 0000000..8ebf4b7
--- /dev/null
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2004 Digi International (www.digi.com)
+ *      Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ *
+ *************************************************************************
+ *
+ * This file is intended to contain all the kernel "differences" between the
+ * various kernels that we support.
+ *
+ *************************************************************************/
+
+#ifndef __DGAP_KCOMPAT_H
+#define __DGAP_KCOMPAT_H
+
+# ifndef KERNEL_VERSION
+#  define KERNEL_VERSION(a,b,c)  (((a) << 16) + ((b) << 8) + (c))
+# endif
+
+
+#if !defined(TTY_FLIPBUF_SIZE)
+# define TTY_FLIPBUF_SIZE 512
+#endif
+
+
+/* Sparse stuff */
+# ifndef __user
+#  define __user
+#  define __kernel
+#  define __safe
+#  define __force
+#  define __chk_user_ptr(x) (void)0
+# endif
+
+
+#  define PARM_STR(VAR, INIT, PERM, DESC) \
+               static char *VAR = INIT; \
+               char *dgap_##VAR; \
+               module_param(VAR, charp, PERM); \
+               MODULE_PARM_DESC(VAR, DESC);
+
+#  define PARM_INT(VAR, INIT, PERM, DESC) \
+               static int VAR = INIT; \
+               int dgap_##VAR; \
+               module_param(VAR, int, PERM); \
+               MODULE_PARM_DESC(VAR, DESC);
+
+#  define PARM_ULONG(VAR, INIT, PERM, DESC) \
+               static ulong VAR = INIT; \
+               ulong dgap_##VAR; \
+               module_param(VAR, long, PERM); \
+               MODULE_PARM_DESC(VAR, DESC);
+
+
+
+
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+
+
+
+
+/* NOTHING YET */
+
+
+
+
+# else
+
+
+
+# error "this driver does not support anything below the 2.6.27 kernel series."
+
+
+
+# endif
+
+#endif /* ! __DGAP_KCOMPAT_H */
diff --git a/drivers/staging/dgap/dgap_mgmt.c b/drivers/staging/dgap/dgap_mgmt.c
new file mode 100644 (file)
index 0000000..0062481
--- /dev/null
@@ -0,0 +1,768 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *     NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE! 
+ *
+ *     This is shared code between Digi's CVS archive and the
+ *     Linux Kernel sources.
+ *     Changing the source just for reformatting needlessly breaks
+ *     our CVS diff history.
+ *
+ *     Send any bug fixes/changes to:  Eng.Linux at digi dot com. 
+ *     Thank you. 
+ *
+ */
+
+/************************************************************************
+ * 
+ * This file implements the mgmt functionality for the
+ * FEP5 based product lines.
+ * 
+ ************************************************************************
+ * $Id: dgap_mgmt.c,v 1.2 2010/12/13 19:38:04 markh Exp $
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/ctype.h>
+#include <linux/sched.h>       /* For jiffies, task states */
+#include <linux/interrupt.h>   /* For tasklet and interrupt structs/defines */
+#include <linux/pci.h>
+#include <linux/serial_reg.h>
+#include <linux/termios.h>
+#include <asm/uaccess.h>       /* For copy_from_user/copy_to_user */
+#include <asm/io.h>            /* For read[bwl]/write[bwl] */
+
+#include "dgap_driver.h"
+#include "dgap_kcompat.h"      /* Kernel 2.4/2.6 compat includes */
+#include "dgap_fep5.h"
+#include "dgap_parse.h"
+#include "dgap_mgmt.h"
+#include "dgap_downld.h"
+#include "dgap_tty.h"
+#include "dgap_proc.h"
+#include "dgap_sysfs.h"
+
+
+/* This holds the status of the KME buffer */
+static int             dgap_kmebusy = 0;
+
+/* Our "in use" variables, to enforce 1 open only */
+static int             dgap_mgmt_in_use = 0;
+static int             dgap_downld_in_use = 0;
+
+
+/*
+ * dgap_mgmt_open()  
+ *
+ * Open the mgmt/downld/dpa device
+ */  
+int dgap_mgmt_open(struct inode *inode, struct file *file)
+{
+       unsigned long lock_flags;
+       unsigned int minor = iminor(inode);
+
+       DPR_MGMT(("dgap_mgmt_open start.\n"));
+
+       DGAP_LOCK(dgap_global_lock, lock_flags); 
+
+       /* mgmt device */
+       if (minor == MGMT_MGMT) {
+               /* Only allow 1 open at a time on mgmt device */
+               if (dgap_mgmt_in_use) {
+                       DGAP_UNLOCK(dgap_global_lock, lock_flags); 
+                       return (-EBUSY);
+               }
+               dgap_mgmt_in_use++;
+       }
+       /* downld device */
+       else if (minor == MGMT_DOWNLD) {
+               /* Only allow 1 open at a time on downld device */
+               if (dgap_downld_in_use) {
+                       DGAP_UNLOCK(dgap_global_lock, lock_flags); 
+                       return (-EBUSY);
+               }
+               dgap_downld_in_use++;
+       }
+       else {
+               DGAP_UNLOCK(dgap_global_lock, lock_flags); 
+               return (-ENXIO);
+       }
+
+       DGAP_UNLOCK(dgap_global_lock, lock_flags); 
+
+       DPR_MGMT(("dgap_mgmt_open finish.\n"));
+
+       return 0;
+}
+
+/*
+ * dgap_mgmt_close()
+ *
+ * Open the mgmt/dpa device
+ */  
+int dgap_mgmt_close(struct inode *inode, struct file *file)
+{
+       unsigned long lock_flags;
+       unsigned int minor = iminor(inode);
+
+       DPR_MGMT(("dgap_mgmt_close start.\n"));
+
+       DGAP_LOCK(dgap_global_lock, lock_flags); 
+
+       /* mgmt device */
+       if (minor == MGMT_MGMT) {
+               if (dgap_mgmt_in_use) {
+                       dgap_mgmt_in_use = 0;
+               }
+       }
+       /* downld device */
+       else if (minor == MGMT_DOWNLD) {
+               if (dgap_downld_in_use) {
+                       dgap_downld_in_use = 0;
+               }
+       }
+
+       DGAP_UNLOCK(dgap_global_lock, lock_flags); 
+
+       DPR_MGMT(("dgap_mgmt_close finish.\n"));
+
+       return 0;
+}
+
+
+/*
+ * dgap_mgmt_ioctl()
+ *
+ * ioctl the mgmt/dpa device
+ */  
+#ifdef HAVE_UNLOCKED_IOCTL
+long dgap_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        struct inode *inode = file->f_dentry->d_inode;
+#else
+int dgap_mgmt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+#endif
+       unsigned long lock_flags;
+       int error = 0;
+       int i = 0;
+       int j = 0;
+       struct board_t *brd;
+       struct channel_t *ch;
+       static struct downldio dlio;
+       void __user *uarg = (void __user *) arg;
+
+       DPR_MGMT(("dgap_mgmt_ioctl start.\n"));
+
+       switch (cmd) {
+
+       /* HiJack the usage of SEDELAY to turn on/off debugging. */
+       case DIGI_SEDELAY:
+       {
+               unsigned int value = 0;
+
+               if (copy_from_user((unsigned int *) &value, uarg, sizeof(unsigned int))) {
+                       return (-EFAULT);
+               }
+
+               printk("Setting debug of value: %x\n", value);
+               dgap_debug = value;
+               return 0;
+       }
+
+       case DIGI_DLREQ_GET:
+       {
+
+get_service:
+
+               DGAP_LOCK(dgap_global_lock, lock_flags);
+
+               if (dgap_driver_state == DRIVER_NEED_CONFIG_LOAD) {
+
+                       dgap_driver_state = DRIVER_REQUESTED_CONFIG;
+
+                       dlio.req_type = DLREQ_CONFIG;
+                       dlio.bdid = 0;
+                       dlio.image.fi.type = 0;
+
+                       DGAP_UNLOCK(dgap_global_lock, lock_flags);
+
+                       if (copy_to_user(uarg, &dlio, sizeof(struct downldio))) {
+                               DGAP_LOCK(dgap_global_lock, lock_flags);
+                               dgap_driver_state = DRIVER_NEED_CONFIG_LOAD;
+                               DGAP_UNLOCK(dgap_global_lock, lock_flags);
+                               return(-EFAULT);
+                       }
+
+                       return(0);
+               }
+
+               DGAP_UNLOCK(dgap_global_lock, lock_flags);
+
+               /*
+                * Loop thru each board.
+                * Check state, force state machine to start running.
+                */
+               for (i = 0; i < dgap_NumBoards; i++ ) {
+
+                       brd = dgap_Board[i];
+
+                       DGAP_LOCK(brd->bd_lock, lock_flags);
+
+                       switch (brd->state) {
+
+                       case NEED_DEVICE_CREATION:
+
+                               /*
+                                * Let go of lock, tty_register() (and us also)
+                                * does a non-atomic malloc, so it would be
+                                * possible to deadlock the system if the
+                                * malloc went to sleep.
+                                */
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               dgap_tty_register(brd);
+                               dgap_finalize_board_init(brd);
+                               DGAP_LOCK(brd->bd_lock, lock_flags);
+
+                               brd->state = REQUESTED_DEVICE_CREATION;
+
+                               dlio.req_type = DLREQ_DEVCREATE;
+                               dlio.bdid = i;
+                               dlio.image.fi.type = brd->dpatype;
+
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+
+                               if (copy_to_user(uarg, &dlio, sizeof(struct downldio))) {
+                                       DGAP_LOCK(brd->bd_lock, lock_flags);
+                                       brd->state = NEED_DEVICE_CREATION;
+                                       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                                       return(-EFAULT);
+                               }
+
+                               return(0);
+
+                       case NEED_BIOS_LOAD:
+
+                               brd->state = REQUESTED_BIOS;
+
+                               dlio.req_type = DLREQ_BIOS;
+                               dlio.bdid = i;
+                               dlio.image.fi.type = brd->dpatype;
+
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               if (copy_to_user(uarg, &dlio, sizeof(struct downldio))) {
+                                       DGAP_LOCK(brd->bd_lock, lock_flags);
+                                       brd->state = NEED_BIOS_LOAD;
+                                       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                                       return(-EFAULT);
+                               }
+
+                               return(0);
+
+                       case NEED_FEP_LOAD:
+                               brd->state = REQUESTED_FEP;
+
+                               dlio.req_type = DLREQ_FEP; 
+                               dlio.bdid = i;
+                               dlio.image.fi.type = brd->dpatype;
+
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+
+                               if (copy_to_user(uarg, &dlio, sizeof(struct downldio))) {
+                                       DGAP_LOCK(brd->bd_lock, lock_flags);
+                                       brd->state = NEED_FEP_LOAD;
+                                       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                                       return(-EFAULT);
+                               }
+                               return(0);
+
+                       case NEED_PROC_CREATION:
+
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               dgap_proc_register_channel_postscan(brd->boardnum);
+
+                               ch = brd->channels[0];
+                               for (j = 0; j < brd->nasync; j++, ch = brd->channels[j]) {
+                                       struct device *classp;
+                                       classp = 
+                                               tty_register_device(brd->SerialDriver, j, 
+                                               &(ch->ch_bd->pdev->dev));
+                                       ch->ch_tun.un_sysfs = classp;
+                                       dgap_create_tty_sysfs(&ch->ch_tun, classp);
+
+                                       classp = 
+                                               tty_register_device(brd->PrintDriver, j, 
+                                               &(ch->ch_bd->pdev->dev));
+                                       ch->ch_pun.un_sysfs = classp;
+                                       dgap_create_tty_sysfs(&ch->ch_pun, classp);
+                               }
+                               dgap_create_ports_sysfiles(brd);
+
+                               DGAP_LOCK(brd->bd_lock, lock_flags);
+                               brd->state = FINISHED_PROC_CREATION;
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               break;
+
+                       default:
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               break;
+
+                       }
+
+                       DGAP_LOCK(brd->bd_lock, lock_flags);
+
+                       switch (brd->conc_dl_status) {
+
+                       case NEED_CONCENTRATOR:
+                       {
+                               u16 offset = 0;
+                               char *vaddr;
+                               struct downld_t *to_dp;
+
+                               vaddr = brd->re_map_membase;
+                               if (!vaddr) {
+                                       brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
+                                       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                                       break;
+                               }
+
+                               dlio.req_type = DLREQ_CONC;
+                               dlio.bdid = i;
+
+                               offset = readw((u16 *) (vaddr + DOWNREQ));
+                               to_dp = (struct downld_t *) (vaddr + (int) offset);
+
+                               if (!to_dp) {
+                                       brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
+                                       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                                       break;
+                               }
+
+                               memcpy(&dlio.image.dl, to_dp, sizeof(struct downld_t));
+
+                               brd->conc_dl_status = REQUESTED_CONCENTRATOR;
+
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+
+                               if (copy_to_user(uarg, &dlio, sizeof(struct downldio))) {
+                                       DGAP_LOCK(brd->bd_lock, lock_flags);
+                                       brd->conc_dl_status = NEED_CONCENTRATOR;
+                                       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                                       return(-EFAULT);
+                               }
+
+                               return(0);
+                       }
+
+                       default:
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               break;
+                       }
+               }
+
+               /*
+                * Go to sleep waiting for the driver to signal an event to us.
+                */
+               error = wait_event_interruptible(dgap_dl_wait, (dgap_dl_action));
+
+               DGAP_LOCK(dgap_dl_lock, lock_flags);
+               dgap_dl_action = 0;
+               DGAP_UNLOCK(dgap_dl_lock, lock_flags);
+
+               /* Break out of ioctl if user cancelled us */
+               if (error)
+                       break;
+
+               goto get_service;
+
+       }
+
+       case DIGI_DLREQ_SET:
+       {
+               uchar __user *uaddr = NULL;
+               uchar *uaddr2 = NULL;
+
+               if (copy_from_user((char *) &dlio, uarg, sizeof(struct downldio))) {
+                       return (-EFAULT);
+               }
+
+               if (dlio.req_type == DLREQ_CONFIG) {
+
+                       uaddr = uarg +
+                               (int) ( ((struct downldio *)0)->image.fi.fepimage);
+
+                       dgap_do_config_load(uaddr, dlio.image.fi.len);
+                       dgap_after_config_loaded();
+
+                       DGAP_LOCK(dgap_global_lock, lock_flags);
+                       dgap_driver_state = DRIVER_READY;
+                       DGAP_UNLOCK(dgap_global_lock, lock_flags);
+
+                       break;
+
+               }
+
+               if (dlio.bdid < 0 || dlio.bdid > dgap_NumBoards) {
+                       return(-ENXIO);
+                }
+
+               brd = dgap_Board[dlio.bdid];
+
+               switch(dlio.req_type) {
+
+               case DLREQ_BIOS:
+                       if (brd->state == BOARD_FAILED || brd->state == BOARD_READY) {
+                               break;
+                       }
+
+                       if (dlio.image.fi.type == -1) {
+                               DGAP_LOCK(brd->bd_lock, lock_flags);
+                               brd->state = BOARD_FAILED;
+                               brd->dpastatus = BD_NOBIOS;
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               break;
+                       }
+
+
+                       uaddr = uarg +
+                               (int) ( ((struct downldio *)0)->image.fi.fepimage);
+
+                       dgap_do_bios_load(brd, uaddr, dlio.image.fi.len);
+
+                       break;
+               case DLREQ_FEP:
+                       if (brd->state == BOARD_FAILED || brd->state == BOARD_READY) {
+                                break;
+                       }
+
+                       if (dlio.image.fi.type == -1) {
+                               DGAP_LOCK(brd->bd_lock, lock_flags);
+                               brd->state = BOARD_FAILED;
+                               brd->dpastatus = BD_NOBIOS;
+                               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+                               break;
+                       }
+
+                       uaddr = uarg +
+                               (int) ( ((struct downldio *)0)->image.fi.fepimage);
+
+                       dgap_do_fep_load(brd, uaddr, dlio.image.fi.len);
+
+                       break;
+
+               case DLREQ_CONC:
+
+                       if (brd->state == BOARD_FAILED) {
+                                break;
+                       }
+
+                       if (dlio.image.fi.type == -1) {
+                               break;
+                       }
+
+                       uaddr2 = (char *) &dlio.image.dl;
+                       dgap_do_conc_load(brd, uaddr2, sizeof(struct downld_t));
+
+                       break;
+
+               case DLREQ_DEVCREATE:
+                       if (brd->state == BOARD_FAILED || brd->state == BOARD_READY) {
+                                break;
+                       }
+
+                       DGAP_LOCK(brd->bd_lock, lock_flags);
+                       brd->state = FINISHED_DEVICE_CREATION;
+                       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+
+                       break;
+
+               }
+
+               break;
+       }
+
+
+       case DIGI_GETDD:
+       {
+               /*
+                * This returns the total number of boards
+                * in the system, as well as driver version
+                * and has space for a reserved entry
+                */
+               struct digi_dinfo ddi;
+
+               DGAP_LOCK(dgap_global_lock, lock_flags); 
+
+               ddi.dinfo_nboards = dgap_NumBoards;
+               sprintf(ddi.dinfo_version, "%s", DG_PART);
+
+               DGAP_UNLOCK(dgap_global_lock, lock_flags); 
+
+               DPR_MGMT(("DIGI_GETDD returning numboards: %lu version: %s\n",
+                       ddi.dinfo_nboards, ddi.dinfo_version));
+
+               if (copy_to_user(uarg, &ddi, sizeof(ddi)))
+                       return(-EFAULT);
+
+               break;
+       }
+
+       case DIGI_GETBD:
+       {
+               int brd2;
+               struct digi_info di;
+
+               if (copy_from_user(&brd2, uarg, sizeof(int))) {
+                       return(-EFAULT);
+               }
+
+               DPR_MGMT(("DIGI_GETBD asking about board: %d\n", brd2));
+
+               if ((brd2 < 0) || (brd2 > dgap_NumBoards) || (dgap_NumBoards == 0))
+                       return (-ENODEV);
+
+               memset(&di, 0, sizeof(di));
+
+               di.info_bdnum = brd2;
+
+               DGAP_LOCK(dgap_Board[brd2]->bd_lock, lock_flags); 
+
+               di.info_bdtype = dgap_Board[brd2]->dpatype;
+               di.info_bdstate = dgap_Board[brd2]->dpastatus;
+               di.info_ioport = (ulong) dgap_Board[brd2]->port;
+               di.info_physaddr = (ulong) dgap_Board[brd2]->membase;
+               di.info_physsize = (ulong) dgap_Board[brd2]->membase - dgap_Board[brd2]->membase_end;
+               if (dgap_Board[brd2]->state != BOARD_FAILED)
+                       di.info_nports = dgap_Board[brd2]->nasync;
+               else
+                       di.info_nports = 0;
+
+               DGAP_UNLOCK(dgap_Board[brd2]->bd_lock, lock_flags); 
+
+               DPR_MGMT(("DIGI_GETBD returning type: %x state: %x ports: %x size: %lx\n",
+                       di.info_bdtype, di.info_bdstate, di.info_nports, di.info_physsize));
+
+               if (copy_to_user(uarg, &di, sizeof (di)))
+                       return(-EFAULT);
+
+               break;
+       }
+
+       case DIGI_KME:
+       {
+               int itmp, jtmp;
+               unchar *memaddr = NULL;           
+               struct rw_t kme;
+               struct rw_t *mp = NULL;
+               int brd2 = 0;
+               struct board_t *bd;
+
+               /* This ioctl takes an argument of type 'rw_t'
+                * and uses it to interact with the KME struct
+                * located on the digiboard itself.
+                */
+               if (copy_from_user(&kme, uarg, sizeof(kme)))
+                       return(-EFAULT);
+
+               if (kme.rw_size > 128)
+                       kme.rw_size = 128;
+
+               brd2 = kme.rw_board;
+
+               DPR_MGMT(("dgap_mgmt: DIGI_KME: %s asked for board %d\n", current->comm, brd2));
+
+               /* Sanity Checking... */
+               if ((brd2 < 0) || (brd2 > dgap_NumBoards) || (dgap_NumBoards == 0))
+                       return (-ENODEV);
+
+               bd = dgap_Board[brd2];
+
+               DGAP_LOCK(dgap_Board[brd2]->bd_lock, lock_flags); 
+
+               if (bd->state != BOARD_READY) {
+                       DGAP_UNLOCK(dgap_Board[brd2]->bd_lock, lock_flags); 
+                       return(-ENODEV);
+               }
+
+               memaddr = bd->re_map_membase;
+
+               DGAP_UNLOCK(dgap_Board[brd2]->bd_lock, lock_flags); 
+
+               /* If the concentrator number is 0... */
+               if (kme.rw_conc == 0 && kme.rw_addr < 0x100000) {
+                       int page = 0;   
+                       int addr = kme.rw_addr;
+                       int size = kme.rw_size;
+                       caddr_t data = (caddr_t) kme.rw_data; 
+
+                       while ((itmp = size)) {
+
+                               switch (kme.rw_req) {
+                               case RW_READ: 
+                               {
+                                       register caddr_t cp1 = (char *)memaddr + addr;
+                                       register caddr_t cp2 = kme.rw_data;
+
+                                       DPR_MGMT(("RW_READ CARDMEM - page=%d rw_addr=0x%lx  rw_size=%x\n",
+                                               page, kme.rw_addr, kme.rw_size));
+
+                                       for (jtmp = 0; jtmp < itmp; jtmp++) {
+                                               *cp2++ = readb(cp1++);
+                                       }
+                               }
+
+                               break;
+
+                               case RW_WRITE:
+                               {
+                                       register caddr_t cp1 = memaddr + addr;
+                                       register caddr_t cp2 = data;
+
+                                       DPR_MGMT(("RW_WRITE CARDMEM - page=%d rw_addr=0x%lx rw_size=%d\n",
+                                               page, kme.rw_addr, kme.rw_size));
+
+                                       for (jtmp = 0; jtmp < itmp; jtmp++) {
+                                               writeb(*cp2++, cp1++);
+                                       }
+                               }
+                               break;
+                               }
+
+                               addr += itmp;
+                               data += itmp;
+                               size -= itmp;
+
+                       }
+
+               } 
+               else {                        
+
+                       /*
+                        * Read/Write memory in a REMOTE CONCENTRATOR..
+                        * There is only 1 buffer, so do mutual
+                        * exclusion to make sure only one KME
+                        * request is pending...
+                        */
+
+                       mp = (struct rw_t *) (memaddr + KMEMEM);
+
+                       while (dgap_kmebusy != 0) {
+                               dgap_kmebusy = 2;      
+                               error = wait_event_interruptible(bd->kme_wait, (!dgap_kmebusy));
+                               if (error)
+                                       goto endkme;
+                       }
+
+                       dgap_kmebusy = 1;
+
+                       /* Copy KME request to the board.. */
+
+                       mp->rw_board = kme.rw_board;
+                       mp->rw_conc  = kme.rw_conc;
+                       mp->rw_reserved = kme.rw_reserved;
+                       memcpy(&mp->rw_addr, &kme.rw_addr, sizeof(int));
+                       memcpy(&mp->rw_size, &kme.rw_size, sizeof(short));
+
+                       if(kme.rw_req == RW_WRITE) {
+                               register caddr_t cp1 = (caddr_t) mp->rw_data;
+                               register caddr_t cp2 = (caddr_t) kme.rw_data;
+
+                               DPR_MGMT(("RW_WRITE CONCMEM - rw_addr=0x%lx  rw_size=%d\n",
+                                       kme.rw_addr, kme.rw_size));
+
+                               for (jtmp = 0; jtmp < (int) kme.rw_size; jtmp++) {
+                                       writeb(*cp2++, cp1++);
+                               }
+                       }
+
+                       /* EXECUTE REQUEST */
+
+                       mp->rw_req = kme.rw_req;
+
+                       /*
+                        * Wait for the board to process the
+                        * request, but limit the wait to 2 secs
+                        */
+
+                       for (itmp = jiffies + (2 * HZ); mp->rw_req;) {
+                               if(jiffies >= itmp) {     
+                                       error = ENXIO;
+                                       /* Set request back to 0.. */
+                                       mp->rw_req = 0;
+                                       goto endkme;
+                               }
+
+                               schedule_timeout(HZ / 10);
+                       }
+
+                       /* 
+                        * Since this portion of code is looksee
+                        * ported from the HPUX EMUX code, i'm
+                        * leaving OUT a portion of that code where
+                        * the HP/UX code actually puts the process
+                        * to sleep for some reason
+                        */
+                       if (mp->rw_size < kme.rw_size)
+                               memcpy(&kme.rw_size, &mp->rw_size, sizeof(short));
+
+                       /* Copy the READ data back to the source buffer... */
+                       if (kme.rw_req == RW_READ) {
+                               register caddr_t cp1 = (caddr_t) mp->rw_data;
+                               register caddr_t cp2 = (caddr_t) kme.rw_data;
+
+                               DPR_MGMT(("RW_READ CONCMEM - rw_addr=0x%lx  rw_size=%d\n",
+                                       kme.rw_addr, kme.rw_size));
+
+                               for (jtmp = 0; jtmp < (int) kme.rw_size; jtmp++) {
+                                       *cp2++ = readb(cp1++);
+                               }
+                       }       
+
+                       /*
+                        * Common exit point for code sharing the
+                        * kme buffer. Before exiting, always wake
+                        * another process waiting for the buffer
+                        */
+
+               endkme:
+
+                       if (dgap_kmebusy != 1)
+                               wake_up_interruptible(&bd->kme_wait);
+                       dgap_kmebusy = 0;
+                       if (error == ENXIO)
+                               return(-EINVAL);
+               }        
+
+               /* Copy the whole (Possibly Modified) mess */
+               /* back out to user space...               */
+
+               if (!error) {
+                       if (copy_to_user(uarg, &kme, sizeof(kme)))
+                               return (-EFAULT);
+
+                       return(0);
+               }
+       }
+       }
+
+       DPR_MGMT(("dgap_mgmt_ioctl finish.\n"));
+
+       return 0;
+}
diff --git a/drivers/staging/dgap/dgap_mgmt.h b/drivers/staging/dgap/dgap_mgmt.h
new file mode 100644 (file)
index 0000000..69e7603
--- /dev/null
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+#ifndef __DGAP_MGMT_H
+#define __DGAP_MGMT_H
+
+#define MGMT_MGMT 0
+#define MGMT_DOWNLD 1
+
+int dgap_mgmt_open(struct inode *inode, struct file *file);
+int dgap_mgmt_close(struct inode *inode, struct file *file);
+
+#ifdef HAVE_UNLOCKED_IOCTL
+long dgap_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+#else
+int dgap_mgmt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
+#endif
+
+#endif
+
diff --git a/drivers/staging/dgap/dgap_parse.c b/drivers/staging/dgap/dgap_parse.c
new file mode 100644 (file)
index 0000000..d6d507b
--- /dev/null
@@ -0,0 +1,1372 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *     NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE! 
+ *
+ *     This is shared code between Digi's CVS archive and the
+ *     Linux Kernel sources.
+ *     Changing the source just for reformatting needlessly breaks
+ *     our CVS diff history.
+ *
+ *     Send any bug fixes/changes to:  Eng.Linux at digi dot com. 
+ *     Thank you.
+ *
+ *
+ *****************************************************************************
+ *
+ * dgap_parse.c - Parses the configuration information from the input file.
+ *
+ * $Id: dgap_parse.c,v 1.1 2009/10/23 14:01:57 markh Exp $
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/ctype.h>
+#include <linux/slab.h>
+
+#include "dgap_types.h"
+#include "dgap_fep5.h"
+#include "dgap_driver.h"
+#include "dgap_conf.h"
+
+
+/*
+ * Function prototypes.
+ */
+static int dgap_gettok(char **in, struct cnode *p);
+static char *dgap_getword(char **in);
+static char *dgap_savestring(char *s);
+static struct cnode *dgap_newnode(int t);
+static int dgap_checknode(struct cnode *p);
+static void dgap_err(char *s);
+
+/*
+ * Our needed internal static variables...
+ */
+static struct cnode dgap_head;
+#define MAXCWORD 200
+static char dgap_cword[MAXCWORD];
+
+struct toklist {
+       int     token;
+       char    *string;
+};
+
+static struct toklist dgap_tlist[] = {
+       {       BEGIN,          "config_begin"                  },
+       {       END,            "config_end"                    },
+       {       BOARD,          "board"                         },
+       {       PCX,            "Digi_AccelePort_C/X_PCI"       },      /* C/X_PCI */
+       {       PEPC,           "Digi_AccelePort_EPC/X_PCI"     },      /* EPC/X_PCI */
+       {       PPCM,           "Digi_AccelePort_Xem_PCI"       },      /* PCI/Xem */
+       {       APORT2_920P,    "Digi_AccelePort_2r_920_PCI"    },
+       {       APORT4_920P,    "Digi_AccelePort_4r_920_PCI"    },
+       {       APORT8_920P,    "Digi_AccelePort_8r_920_PCI"    },
+       {       PAPORT4,        "Digi_AccelePort_4r_PCI(EIA-232/RS-422)" },
+       {       PAPORT8,        "Digi_AccelePort_8r_PCI(EIA-232/RS-422)" },
+       {       IO,             "io"                            },
+       {       PCIINFO,        "pciinfo"                       },
+       {       LINE,           "line"                          },
+       {       CONC,           "conc"                          },
+       {       CONC,           "concentrator"                  },
+       {       CX,             "cx"                            },
+       {       CX,             "ccon"                          },
+       {       EPC,            "epccon"                        },
+       {       EPC,            "epc"                           },
+       {       MOD,            "module"                        },
+       {       ID,             "id"                            },
+       {       STARTO,         "start"                         },
+       {       SPEED,          "speed"                         },
+       {       CABLE,          "cable"                         },
+       {       CONNECT,        "connect"                       },
+       {       METHOD,         "method"                        },
+       {       STATUS,         "status"                        },
+       {       CUSTOM,         "Custom"                        },
+       {       BASIC,          "Basic"                         },
+       {       MEM,            "mem"                           },
+       {       MEM,            "memory"                        },
+       {       PORTS,          "ports"                         },
+       {       MODEM,          "modem"                         },
+       {       NPORTS,         "nports"                        },
+       {       TTYN,           "ttyname"                       },
+       {       CU,             "cuname"                        },
+       {       PRINT,          "prname"                        },
+       {       CMAJOR,         "major"                         },
+       {       ALTPIN,         "altpin"                        },
+       {       USEINTR,        "useintr"                       },
+       {       TTSIZ,          "ttysize"                       },
+       {       CHSIZ,          "chsize"                        },
+       {       BSSIZ,          "boardsize"                     },
+       {       UNTSIZ,         "schedsize"                     },
+       {       F2SIZ,          "f2200size"                     },
+       {       VPSIZ,          "vpixsize"                      },
+       {       0,              NULL                            }
+};
+
+
+/*
+ * Parse a configuration file read into memory as a string.
+ */
+int    dgap_parsefile(char **in, int Remove)
+{
+       struct cnode *p, *brd, *line, *conc;
+       int     rc;
+       char    *s = NULL, *s2 = NULL;
+       int     linecnt = 0;
+
+       p = &dgap_head;
+       brd = line = conc = NULL;
+
+       /* perhaps we are adding to an existing list? */
+       while (p->next != NULL) {
+               p = p->next;
+       }
+
+       /* file must start with a BEGIN */
+       while ( (rc = dgap_gettok(in,p)) != BEGIN ) {
+               if (rc == 0) {
+                       dgap_err("unexpected EOF");
+                       return(-1);
+               }
+       }
+
+       for (; ; ) {
+               rc = dgap_gettok(in,p);
+               if (rc == 0) {
+                       dgap_err("unexpected EOF");
+                       return(-1);
+               }
+
+               switch (rc) {
+               case 0:
+                       dgap_err("unexpected end of file");
+                       return(-1);
+
+               case BEGIN:     /* should only be 1 begin */
+                       dgap_err("unexpected config_begin\n");
+                       return(-1);
+
+               case END:
+                       return(0);
+
+               case BOARD:     /* board info */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(BNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+
+                       p->u.board.status = dgap_savestring("No");
+                       line = conc = NULL;
+                       brd = p;
+                       linecnt = -1;
+                       break;
+
+               case APORT2_920P:       /* AccelePort_4 */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected Digi_2r_920 string");
+                               return(-1);
+                       }
+                       p->u.board.type = APORT2_920P;
+                       p->u.board.v_type = 1;
+                       DPR_INIT(("Adding Digi_2r_920 PCI to config...\n"));
+                       break;
+
+               case APORT4_920P:       /* AccelePort_4 */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected Digi_4r_920 string");
+                               return(-1);
+                       }
+                       p->u.board.type = APORT4_920P;
+                       p->u.board.v_type = 1;
+                       DPR_INIT(("Adding Digi_4r_920 PCI to config...\n"));
+                       break;
+
+               case APORT8_920P:       /* AccelePort_8 */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected Digi_8r_920 string");
+                               return(-1);
+                       }
+                       p->u.board.type = APORT8_920P;
+                       p->u.board.v_type = 1;
+                       DPR_INIT(("Adding Digi_8r_920 PCI to config...\n"));
+                       break;
+
+               case PAPORT4:   /* AccelePort_4 PCI */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected Digi_4r(PCI) string");
+                               return(-1);
+                       }
+                       p->u.board.type = PAPORT4;
+                       p->u.board.v_type = 1;
+                       DPR_INIT(("Adding Digi_4r PCI to config...\n"));
+                       break;
+
+               case PAPORT8:   /* AccelePort_8 PCI */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected Digi_8r string");
+                               return(-1);
+                       }
+                       p->u.board.type = PAPORT8;
+                       p->u.board.v_type = 1;
+                       DPR_INIT(("Adding Digi_8r PCI to config...\n"));
+                       break;
+
+               case PCX:       /* PCI C/X */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected Digi_C/X_(PCI) string");
+                               return(-1);
+                       }
+                       p->u.board.type = PCX;
+                       p->u.board.v_type = 1;
+                       p->u.board.conc1 = 0;
+                       p->u.board.conc2 = 0;
+                       p->u.board.module1 = 0;
+                       p->u.board.module2 = 0;
+                       DPR_INIT(("Adding PCI C/X to config...\n"));
+                       break;
+
+               case PEPC:      /* PCI EPC/X */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected \"Digi_EPC/X_(PCI)\" string");
+                               return(-1);
+                       }
+                       p->u.board.type = PEPC;
+                       p->u.board.v_type = 1;
+                       p->u.board.conc1 = 0;
+                       p->u.board.conc2 = 0;
+                       p->u.board.module1 = 0;
+                       p->u.board.module2 = 0;
+                       DPR_INIT(("Adding PCI EPC/X to config...\n"));
+                       break;
+
+               case PPCM:      /* PCI/Xem */
+                       if (p->type != BNODE) {
+                               dgap_err("unexpected PCI/Xem string");
+                               return(-1);
+                       }
+                       p->u.board.type = PPCM;
+                       p->u.board.v_type = 1;
+                       p->u.board.conc1 = 0;
+                       p->u.board.conc2 = 0;
+                       DPR_INIT(("Adding PCI XEM to config...\n"));
+                       break;
+
+               case IO:        /* i/o port */
+                       if (p->type != BNODE) {
+                               dgap_err("IO port only vaild for boards");
+                               return(-1);
+                       }
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.board.portstr = dgap_savestring(s);
+                       p->u.board.port = (short)simple_strtol(s, &s2, 0);
+                       if ((short)strlen(s) > (short)(s2 - s)) {
+                               dgap_err("bad number for IO port");
+                               return(-1);
+                       }
+                       p->u.board.v_port = 1;
+                       DPR_INIT(("Adding IO (%s) to config...\n", s));
+                       break;
+
+               case MEM:       /* memory address */
+                       if (p->type != BNODE) {
+                               dgap_err("memory address only vaild for boards");
+                               return(-1);
+                       }
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.board.addrstr = dgap_savestring(s);
+                       p->u.board.addr = simple_strtoul(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for memory address");
+                               return(-1);
+                       }
+                       p->u.board.v_addr = 1;
+                       DPR_INIT(("Adding MEM (%s) to config...\n", s));
+                       break;
+
+               case PCIINFO:   /* pci information */
+                       if (p->type != BNODE) {
+                               dgap_err("memory address only vaild for boards");
+                               return(-1);
+                       }
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.board.pcibusstr = dgap_savestring(s);
+                       p->u.board.pcibus = simple_strtoul(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for pci bus");
+                               return(-1);
+                       }
+                       p->u.board.v_pcibus = 1;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.board.pcislotstr = dgap_savestring(s);
+                       p->u.board.pcislot = simple_strtoul(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for pci slot");
+                               return(-1);
+                       }
+                       p->u.board.v_pcislot = 1;
+
+                       DPR_INIT(("Adding PCIINFO (%s %s) to config...\n", p->u.board.pcibusstr, 
+                               p->u.board.pcislotstr));
+                       break;
+
+               case METHOD:
+                       if (p->type != BNODE) {
+                               dgap_err("install method only vaild for boards");
+                               return(-1);
+                       }
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.board.method = dgap_savestring(s);
+                       p->u.board.v_method = 1;
+                       DPR_INIT(("Adding METHOD (%s) to config...\n", s));
+                       break;
+
+               case STATUS:
+                       if (p->type != BNODE) {
+                               dgap_err("config status only vaild for boards");
+                               return(-1);
+                       }
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.board.status = dgap_savestring(s);
+                       DPR_INIT(("Adding STATUS (%s) to config...\n", s));
+                       break;
+
+               case NPORTS:    /* number of ports */
+                       if (p->type == BNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.board.nport = (char)simple_strtol(s, &s2, 0);
+                               if ((int)strlen(s) > (int)(s2 - s)) {
+                                       dgap_err("bad number for number of ports");
+                                       return(-1);
+                               }
+                               p->u.board.v_nport = 1;
+                       } else if (p->type == CNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.conc.nport = (char)simple_strtol(s, &s2, 0);
+                               if ((int)strlen(s) > (int)(s2 - s)) {
+                                       dgap_err("bad number for number of ports");
+                                       return(-1);
+                               }
+                               p->u.conc.v_nport = 1;
+                       } else if (p->type == MNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.module.nport = (char)simple_strtol(s, &s2, 0);
+                               if ((int)strlen(s) > (int)(s2 - s)) {
+                                       dgap_err("bad number for number of ports");
+                                       return(-1);
+                               }
+                               p->u.module.v_nport = 1;
+                       } else {
+                               dgap_err("nports only valid for concentrators or modules");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding NPORTS (%s) to config...\n", s));
+                       break;
+
+               case ID:        /* letter ID used in tty name */
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+
+                       p->u.board.status = dgap_savestring(s);
+
+                       if (p->type == CNODE) {
+                               p->u.conc.id = dgap_savestring(s);
+                               p->u.conc.v_id = 1;
+                       } else if (p->type == MNODE) {
+                               p->u.module.id = dgap_savestring(s);
+                               p->u.module.v_id = 1;
+                       } else {
+                               dgap_err("id only valid for concentrators or modules");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding ID (%s) to config...\n", s));
+                       break;
+
+               case STARTO:    /* start offset of ID */
+                       if (p->type == BNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.board.start = simple_strtol(s, &s2, 0);
+                               if ((int)strlen(s) > (int)(s2 - s)) {
+                                       dgap_err("bad number for start of tty count");
+                                       return(-1);
+                               }
+                               p->u.board.v_start = 1;
+                       } else if (p->type == CNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.conc.start = simple_strtol(s, &s2, 0);
+                               if ((int)strlen(s) > (int)(s2 - s)) {
+                                       dgap_err("bad number for start of tty count");
+                                       return(-1);
+                               }
+                               p->u.conc.v_start = 1;
+                       } else if (p->type == MNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.module.start = simple_strtol(s, &s2, 0);
+                               if ((int)strlen(s) > (int)(s2 - s)) {
+                                       dgap_err("bad number for start of tty count");
+                                       return(-1);
+                               }
+                               p->u.module.v_start = 1;
+                       } else {
+                               dgap_err("start only valid for concentrators or modules");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding START (%s) to config...\n", s));
+                       break;
+
+               case TTYN:      /* tty name prefix */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(TNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       if ( (s = dgap_getword(in)) == NULL ) {
+                               dgap_err("unexpeced end of file");
+                               return(-1);
+                       }
+                       if ( (p->u.ttyname = dgap_savestring(s)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding TTY (%s) to config...\n", s));
+                       break;
+
+               case CU:        /* cu name prefix */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(CUNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       if ( (s = dgap_getword(in)) == NULL ) {
+                               dgap_err("unexpeced end of file");
+                               return(-1);
+                       }
+                       if ( (p->u.cuname = dgap_savestring(s)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding CU (%s) to config...\n", s));
+                       break;
+
+               case LINE:      /* line information */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if (brd == NULL) {
+                               dgap_err("must specify board before line info");
+                               return(-1);
+                       }
+                       switch (brd->u.board.type) {
+                       case PPCM:
+                               dgap_err("line not vaild for PC/em");
+                               return(-1);
+                       }
+                       if ( (p->next = dgap_newnode(LNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       conc = NULL;
+                       line = p;
+                       linecnt++;
+                       DPR_INIT(("Adding LINE to config...\n"));
+                       break;
+
+               case CONC:      /* concentrator information */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if (line == NULL) {
+                               dgap_err("must specify line info before concentrator");
+                               return(-1);
+                       }
+                       if ( (p->next = dgap_newnode(CNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       conc = p;
+                       if (linecnt)
+                               brd->u.board.conc2++;
+                       else
+                               brd->u.board.conc1++;
+
+                       DPR_INIT(("Adding CONC to config...\n"));
+                       break;
+
+               case CX:        /* c/x type concentrator */
+                       if (p->type != CNODE) {
+                               dgap_err("cx only valid for concentrators");
+                               return(-1);
+                       }
+                       p->u.conc.type = CX;
+                       p->u.conc.v_type = 1;
+                       DPR_INIT(("Adding CX to config...\n"));
+                       break;
+
+               case EPC:       /* epc type concentrator */
+                       if (p->type != CNODE) {
+                               dgap_err("cx only valid for concentrators");
+                               return(-1);
+                       }
+                       p->u.conc.type = EPC;
+                       p->u.conc.v_type = 1;
+                       DPR_INIT(("Adding EPC to config...\n"));
+                       break;
+
+               case MOD:       /* EBI module */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if (brd == NULL) {
+                               dgap_err("must specify board info before EBI modules");
+                               return(-1);
+                       }
+                       switch (brd->u.board.type) {
+                       case PPCM:
+                               linecnt = 0;
+                               break;
+                       default:
+                               if (conc == NULL) {
+                                       dgap_err("must specify concentrator info before EBI module");
+                                       return(-1);
+                               }
+                       }
+                       if ( (p->next = dgap_newnode(MNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       if (linecnt)
+                               brd->u.board.module2++;
+                       else
+                               brd->u.board.module1++;
+
+                       DPR_INIT(("Adding MOD to config...\n"));
+                       break;
+
+               case PORTS:     /* ports type EBI module */
+                       if (p->type != MNODE) {
+                               dgap_err("ports only valid for EBI modules");
+                               return(-1);
+                       }
+                       p->u.module.type = PORTS;
+                       p->u.module.v_type = 1;
+                       DPR_INIT(("Adding PORTS to config...\n"));
+                       break;
+
+               case MODEM:     /* ports type EBI module */
+                       if (p->type != MNODE) {
+                               dgap_err("modem only valid for modem modules");
+                               return(-1);
+                       }
+                       p->u.module.type = MODEM;
+                       p->u.module.v_type = 1;
+                       DPR_INIT(("Adding MODEM to config...\n"));
+                       break;
+
+               case CABLE:
+                       if (p->type == LNODE) {
+                               if ((s = dgap_getword(in)) == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.line.cable = dgap_savestring(s);
+                               p->u.line.v_cable = 1;
+                       }
+                       DPR_INIT(("Adding CABLE (%s) to config...\n", s));
+                       break;
+
+               case SPEED:     /* sync line speed indication */
+                       if (p->type == LNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.line.speed = (char)simple_strtol(s, &s2, 0);
+                               if ((short)strlen(s) > (short)(s2 - s)) {
+                                       dgap_err("bad number for line speed");
+                                       return(-1);
+                               }
+                               p->u.line.v_speed = 1;
+                       } else if (p->type == CNODE) {
+                               s = dgap_getword(in);
+                               if (s == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.conc.speed = (char)simple_strtol(s, &s2, 0);
+                               if ((short)strlen(s) > (short)(s2 - s)) {
+                                       dgap_err("bad number for line speed");
+                                       return(-1);
+                               }
+                               p->u.conc.v_speed = 1;
+                       } else {
+                               dgap_err("speed valid only for lines or concentrators.");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding SPEED (%s) to config...\n", s));
+                       break;
+
+               case CONNECT:
+                       if (p->type == CNODE) {
+                               if ((s = dgap_getword(in)) == NULL) {
+                                       dgap_err("unexpected end of file");
+                                       return(-1);
+                               }
+                               p->u.conc.connect = dgap_savestring(s);
+                               p->u.conc.v_connect = 1;
+                       }
+                       DPR_INIT(("Adding CONNECT (%s) to config...\n", s));
+                       break;
+               case PRINT:     /* transparent print name prefix */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(PNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       if ( (s = dgap_getword(in)) == NULL ) {
+                               dgap_err("unexpeced end of file");
+                               return(-1);
+                       }
+                       if ( (p->u.printname = dgap_savestring(s)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding PRINT (%s) to config...\n", s));
+                       break;
+
+               case CMAJOR:    /* major number */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(JNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.majornumber = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for major number");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding CMAJOR (%s) to config...\n", s));
+                       break;
+
+               case ALTPIN:    /* altpin setting */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(ANODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.altpin = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for altpin");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding ALTPIN (%s) to config...\n", s));
+                       break;
+
+               case USEINTR:           /* enable interrupt setting */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(INTRNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.useintr = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for useintr");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding USEINTR (%s) to config...\n", s));
+                       break;
+
+               case TTSIZ:     /* size of tty structure */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(TSNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.ttysize = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for ttysize");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding TTSIZ (%s) to config...\n", s));
+                       break;
+
+               case CHSIZ:     /* channel structure size */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(CSNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.chsize = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for chsize");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding CHSIZE (%s) to config...\n", s));
+                       break;
+
+               case BSSIZ:     /* board structure size */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(BSNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.bssize = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for bssize");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding BSSIZ (%s) to config...\n", s));
+                       break;
+
+               case UNTSIZ:    /* sched structure size */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(USNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.unsize = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for schedsize");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding UNTSIZ (%s) to config...\n", s));
+                       break;
+
+               case F2SIZ:     /* f2200 structure size */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(FSNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.f2size = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for f2200size");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding F2SIZ (%s) to config...\n", s));
+                       break;
+
+               case VPSIZ:     /* vpix structure size */
+                       if (dgap_checknode(p))
+                               return(-1);
+                       if ( (p->next = dgap_newnode(VSNODE)) == NULL ) {
+                               dgap_err("out of memory");
+                               return(-1);
+                       }
+                       p = p->next;
+                       s = dgap_getword(in);
+                       if (s == NULL) {
+                               dgap_err("unexpected end of file");
+                               return(-1);
+                       }
+                       p->u.vpixsize = simple_strtol(s, &s2, 0);
+                       if ((int)strlen(s) > (int)(s2 - s)) {
+                               dgap_err("bad number for vpixsize");
+                               return(-1);
+                       }
+                       DPR_INIT(("Adding VPSIZ (%s) to config...\n", s));
+                       break;
+               }
+       }
+}
+
+
+/*
+ * dgap_sindex: much like index(), but it looks for a match of any character in
+ * the group, and returns that position.  If the first character is a ^, then
+ * this will match the first occurence not in that group.
+ */
+static char *dgap_sindex (char *string, char *group)
+{
+       char    *ptr;
+
+       if (!string || !group)
+               return (char *) NULL;
+
+       if (*group == '^') {   
+               group++;
+               for (; *string; string++) {
+                       for (ptr = group; *ptr; ptr++) {
+                               if (*ptr == *string)
+                                       break;
+                       }
+                       if (*ptr == '\0')
+                               return string;
+               }
+       }   
+       else {
+               for (; *string; string++) {
+                       for (ptr = group; *ptr; ptr++) {
+                               if (*ptr == *string)
+                                       return string;
+                       }
+               }
+       }
+
+       return (char *) NULL;
+}
+
+
+/*
+ * Get a token from the input file; return 0 if end of file is reached
+ */
+static int dgap_gettok(char **in, struct cnode *p)
+{
+       char    *w;
+       struct toklist *t;
+       
+       if (strstr(dgap_cword, "boar")) {
+               w = dgap_getword(in);
+               snprintf(dgap_cword, MAXCWORD, "%s", w);
+               for (t = dgap_tlist; t->token != 0; t++) {
+                       if ( !strcmp(w, t->string)) {
+                               return(t->token);
+                       } 
+               }
+               dgap_err("board !!type not specified");
+               return(1);
+       }
+       else {
+               while ( (w = dgap_getword(in)) != NULL ) {
+                       snprintf(dgap_cword, MAXCWORD, "%s", w);
+                       for (t = dgap_tlist; t->token != 0; t++) {
+                               if ( !strcmp(w, t->string) )
+                                       return(t->token);
+                       }
+               }
+               return(0);
+       }
+}
+
+
+/*
+ * get a word from the input stream, also keep track of current line number.
+ * words are separated by whitespace.
+ */
+static char *dgap_getword(char **in)
+{
+       char *ret_ptr = *in;
+
+        char *ptr = dgap_sindex(*in, " \t\n");
+
+       /* If no word found, return null */
+       if (!ptr)
+               return NULL;
+
+       /* Mark new location for our buffer */
+       *ptr = '\0';
+       *in = ptr + 1;
+
+       /* Eat any extra spaces/tabs/newlines that might be present */
+       while (*in && **in && ((**in == ' ') || (**in == '\t') || (**in == '\n'))) {
+               **in = '\0';
+               *in = *in + 1;
+       }
+
+       return ret_ptr;
+}
+
+
+/*
+ * print an error message, giving the line number in the file where
+ * the error occurred.
+ */
+static void dgap_err(char *s)
+{
+       printk("DGAP: parse: %s\n", s);
+}
+
+
+/*
+ * allocate a new configuration node of type t
+ */
+static struct cnode *dgap_newnode(int t)
+{
+       struct cnode *n;
+       if ( (n = (struct cnode *) kmalloc(sizeof(struct cnode ), GFP_ATOMIC) ) != NULL) {
+               memset( (char *)n, 0, sizeof(struct cnode ) );
+               n->type = t;
+       }
+       return(n);
+}
+
+
+/*
+ * dgap_checknode: see if all the necessary info has been supplied for a node
+ * before creating the next node.
+ */
+static int dgap_checknode(struct cnode *p)
+{
+       switch (p->type) {
+       case BNODE:
+               if (p->u.board.v_type == 0) {
+                       dgap_err("board type !not specified");
+                       return(1);
+               }
+
+               return(0);
+
+       case LNODE:
+               if (p->u.line.v_speed == 0) {
+                       dgap_err("line speed not specified");
+                       return(1);
+               }
+               return(0);
+
+       case CNODE:
+               if (p->u.conc.v_type == 0) {
+                       dgap_err("concentrator type not specified");
+                       return(1);
+               }
+               if (p->u.conc.v_speed == 0) {
+                       dgap_err("concentrator line speed not specified");
+                       return(1);
+               }
+               if (p->u.conc.v_nport == 0) {
+                       dgap_err("number of ports on concentrator not specified");
+                       return(1);
+               }
+               if (p->u.conc.v_id == 0) {
+                       dgap_err("concentrator id letter not specified");
+                       return(1);
+               }
+               return(0);
+
+       case MNODE:
+               if (p->u.module.v_type == 0) {
+                       dgap_err("EBI module type not specified");
+                       return(1);
+               }
+               if (p->u.module.v_nport == 0) {
+                       dgap_err("number of ports on EBI module not specified");
+                       return(1);
+               }
+               if (p->u.module.v_id == 0) {
+                       dgap_err("EBI module id letter not specified");
+                       return(1);
+               }
+               return(0);
+       }
+       return(0);
+}
+
+/*
+ * save a string somewhere
+ */
+static char    *dgap_savestring(char *s)
+{
+       char    *p;
+       if ( (p = kmalloc(strlen(s) + 1, GFP_ATOMIC) ) != NULL) {
+               strcpy(p, s);
+       }
+       return(p);
+}
+
+
+/*
+ * Given a board pointer, returns whether we should use interrupts or not.
+ */
+uint dgap_config_get_useintr(struct board_t *bd)
+{
+       struct cnode *p = NULL;
+
+       if (!bd)
+               return(0);
+
+       for (p = bd->bd_config; p; p = p->next) {
+               switch (p->type) {
+               case INTRNODE:
+                       /*
+                        * check for pcxr types.
+                        */
+                       return p->u.useintr;
+               default:
+                       break;
+               }
+       }
+
+       /* If not found, then don't turn on interrupts. */
+       return 0;
+}
+
+
+/*
+ * Given a board pointer, returns whether we turn on altpin or not.
+ */
+uint dgap_config_get_altpin(struct board_t *bd)
+{
+       struct cnode *p = NULL;
+
+       if (!bd)
+               return(0);
+
+       for (p = bd->bd_config; p; p = p->next) {
+               switch (p->type) {
+               case ANODE:
+                       /*
+                        * check for pcxr types.
+                        */
+                       return p->u.altpin;
+               default:
+                       break;
+               }
+       }
+
+       /* If not found, then don't turn on interrupts. */
+       return 0;
+}
+
+
+
+/*
+ * Given a specific type of board, if found, detached link and 
+ * returns the first occurance in the list.
+ */
+struct cnode *dgap_find_config(int type, int bus, int slot)
+{
+       struct cnode *p, *prev = NULL, *prev2 = NULL, *found = NULL;
+
+       p = &dgap_head;
+
+       while (p->next != NULL) {
+               prev = p;
+               p = p->next;
+
+               if (p->type == BNODE) {
+
+                       if (p->u.board.type == type) {
+
+                               if (p->u.board.v_pcibus && p->u.board.pcibus != bus) {
+                                       DPR(("Found matching board, but wrong bus position. System says bus %d, we want bus %ld\n",
+                                               bus, p->u.board.pcibus));
+                                       continue;
+                               }
+                               if (p->u.board.v_pcislot && p->u.board.pcislot != slot) {
+                                       DPR_INIT(("Found matching board, but wrong slot position. System says slot %d, we want slot %ld\n",
+                                               slot, p->u.board.pcislot));
+                                       continue;
+                               }
+
+                               DPR_INIT(("Matched type in config file\n"));
+
+                               found = p;
+                               /*
+                                * Keep walking thru the list till we find the next board.
+                                */
+                               while (p->next != NULL) {
+                                       prev2 = p;
+                                       p = p->next;
+                                       if (p->type == BNODE) {
+
+                                               /*
+                                                * Mark the end of our 1 board chain of configs.
+                                                */
+                                               prev2->next = NULL;
+
+                                               /*
+                                                * Link the "next" board to the previous board,
+                                                * effectively "unlinking" our board from the main config.
+                                                */
+                                               prev->next = p;
+
+                                               return found;
+                                       }
+                               }
+                               /*
+                                * It must be the last board in the list.
+                                */
+                               prev->next = NULL;
+                               return found;
+                       }
+               }
+       }
+       return NULL;
+}
+
+/*
+ * Given a board pointer, walks the config link, counting up
+ * all ports user specified should be on the board.
+ * (This does NOT mean they are all actually present right now tho)
+ */
+uint dgap_config_get_number_of_ports(struct board_t *bd)
+{
+       int count = 0;
+       struct cnode *p = NULL;
+
+       if (!bd)
+               return(0);
+
+       for (p = bd->bd_config; p; p = p->next) {
+
+               switch (p->type) {
+               case BNODE:
+                       /*
+                        * check for pcxr types.
+                        */
+                       if (p->u.board.type > EPCFE)
+                               count += p->u.board.nport;
+                       break;
+               case CNODE:
+                       count += p->u.conc.nport;
+                       break;
+               case MNODE:
+                       count += p->u.module.nport;
+                       break;
+               }
+       }
+       return (count);
+}
+
+char *dgap_create_config_string(struct board_t *bd, char *string)
+{
+       char *ptr = string;
+       struct cnode *p = NULL;
+       struct cnode *q = NULL;
+       int speed;
+
+       if (!bd) {
+               *ptr = 0xff;
+               return string;
+       }
+
+       for (p = bd->bd_config; p; p = p->next) {
+
+               switch (p->type) {
+               case LNODE:
+                       *ptr = '\0';
+                       ptr++;
+                       *ptr = p->u.line.speed;
+                       ptr++;
+                       break;
+               case CNODE:
+                       /*
+                        * Because the EPC/con concentrators can have EM modules
+                        * hanging off of them, we have to walk ahead in the list
+                        * and keep adding the number of ports on each EM to the config.
+                        * UGH!
+                        */
+                       speed = p->u.conc.speed;
+                       q = p->next;
+                       if ((q != NULL) && (q->type == MNODE) ) {
+                               *ptr = (p->u.conc.nport + 0x80);
+                               ptr++;
+                               p = q;
+                               while ((q->next != NULL) && (q->next->type) == MNODE) {
+                                       *ptr = (q->u.module.nport + 0x80);
+                                       ptr++;
+                                       p = q;
+                                       q = q->next;
+                               }
+                               *ptr = q->u.module.nport;
+                               ptr++;
+                       } else {
+                               *ptr = p->u.conc.nport;
+                               ptr++;
+                       }
+
+                       *ptr = speed;
+                       ptr++;
+                       break;
+               }
+       }
+
+       *ptr = 0xff;
+       return string;
+}
+
+
+
+char *dgap_get_config_letters(struct board_t *bd, char *string)
+{
+       int found = FALSE;
+       char *ptr = string;
+       struct cnode *cptr = NULL;
+       int len = 0;
+       int left = MAXTTYNAMELEN;
+
+       if (!bd) {
+               return "<NULL>";
+       }
+
+       for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
+
+               if ((cptr->type == BNODE) &&
+                    ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
+                    (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
+                    (cptr->u.board.type == PAPORT8))) {
+
+                       found = TRUE;
+               }
+
+               if (cptr->type == TNODE && found == TRUE) {
+                       char *ptr1;
+                       if (strstr(cptr->u.ttyname, "tty")) {
+                               ptr1 = cptr->u.ttyname;
+                               ptr1 += 3;
+                       }
+                       else {
+                               ptr1 = cptr->u.ttyname;
+                       }
+                       if (ptr1) {
+                               len = snprintf(ptr, left, "%s", ptr1);
+                               left -= len;
+                               ptr  += len;
+                               if (left <= 0)
+                                       break;
+                       }
+               }
+
+               if (cptr->type == CNODE) {
+                       if (cptr->u.conc.id) {
+                               len = snprintf(ptr, left, "%s", cptr->u.conc.id);
+                               left -= len;
+                               ptr  += len;
+                               if (left <= 0)
+                                       break;
+                       }
+                }
+
+               if (cptr->type == MNODE) {
+                       if (cptr->u.module.id) {
+                               len = snprintf(ptr, left, "%s", cptr->u.module.id);
+                               left -= len;
+                               ptr  += len;
+                               if (left <= 0)
+                                       break;
+                       }
+               }
+       }
+
+       return string;
+}
diff --git a/drivers/staging/dgap/dgap_parse.h b/drivers/staging/dgap/dgap_parse.h
new file mode 100644 (file)
index 0000000..8128c47
--- /dev/null
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+#ifndef _DGAP_PARSE_H
+#define _DGAP_PARSE_H
+
+#include "dgap_driver.h"
+
+extern int dgap_parsefile(char **in, int Remove);
+extern struct cnode *dgap_find_config(int type, int bus, int slot);
+extern uint dgap_config_get_number_of_ports(struct board_t *bd);
+extern char *dgap_create_config_string(struct board_t *bd, char *string);
+extern char *dgap_get_config_letters(struct board_t *bd, char *string);
+extern uint dgap_config_get_useintr(struct board_t *bd);
+extern uint dgap_config_get_altpin(struct board_t *bd);
+
+#endif
diff --git a/drivers/staging/dgap/dgap_pci.h b/drivers/staging/dgap/dgap_pci.h
new file mode 100644 (file)
index 0000000..05ed374
--- /dev/null
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+/* $Id: dgap_pci.h,v 1.1 2009/10/23 14:01:57 markh Exp $ */
+
+#ifndef __DGAP_PCI_H
+#define __DGAP_PCI_H
+
+#define PCIMAX 32                      /* maximum number of PCI boards */
+
+#define DIGI_VID               0x114F
+
+#define PCI_DEVICE_EPC_DID     0x0002
+#define PCI_DEVICE_XEM_DID     0x0004
+#define PCI_DEVICE_XR_DID      0x0005
+#define PCI_DEVICE_CX_DID      0x0006
+#define PCI_DEVICE_XRJ_DID     0x0009  /* PLX-based Xr adapter */
+#define PCI_DEVICE_XR_IBM_DID  0x0011  /* IBM 8-port Async Adapter */
+#define PCI_DEVICE_XR_BULL_DID 0x0013  /* BULL 8-port Async Adapter */
+#define PCI_DEVICE_XR_SAIP_DID 0x001c  /* SAIP card - Xr adapter */
+#define PCI_DEVICE_XR_422_DID  0x0012  /* Xr-422 */
+#define PCI_DEVICE_920_2_DID   0x0034  /* XR-Plus 920 K, 2 port */
+#define PCI_DEVICE_920_4_DID   0x0026  /* XR-Plus 920 K, 4 port */
+#define PCI_DEVICE_920_8_DID   0x0027  /* XR-Plus 920 K, 8 port */
+#define PCI_DEVICE_EPCJ_DID    0x000a  /* PLX 9060 chip for PCI  */
+#define PCI_DEVICE_CX_IBM_DID  0x001b  /* IBM 128-port Async Adapter */
+#define PCI_DEVICE_920_8_HP_DID        0x0058  /* HP XR-Plus 920 K, 8 port */
+#define PCI_DEVICE_XEM_HP_DID  0x0059  /* HP Xem PCI */
+
+#define PCI_DEVICE_XEM_NAME    "AccelePort XEM"
+#define PCI_DEVICE_CX_NAME     "AccelePort CX"
+#define PCI_DEVICE_XR_NAME     "AccelePort Xr"
+#define PCI_DEVICE_XRJ_NAME    "AccelePort Xr (PLX)"
+#define PCI_DEVICE_XR_SAIP_NAME        "AccelePort Xr (SAIP)"
+#define PCI_DEVICE_920_2_NAME  "AccelePort Xr920 2 port"
+#define PCI_DEVICE_920_4_NAME  "AccelePort Xr920 4 port"
+#define PCI_DEVICE_920_8_NAME  "AccelePort Xr920 8 port"
+#define PCI_DEVICE_XR_422_NAME "AccelePort Xr 422"
+#define PCI_DEVICE_EPCJ_NAME   "AccelePort EPC (PLX)"
+#define PCI_DEVICE_XR_BULL_NAME        "AccelePort Xr (BULL)"
+#define PCI_DEVICE_XR_IBM_NAME "AccelePort Xr (IBM)"
+#define PCI_DEVICE_CX_IBM_NAME "AccelePort CX (IBM)"
+#define PCI_DEVICE_920_8_HP_NAME "AccelePort Xr920 8 port (HP)"
+#define PCI_DEVICE_XEM_HP_NAME "AccelePort XEM (HP)"
+
+
+/*
+ * On the PCI boards, there is no IO space allocated
+ * The I/O registers will be in the first 3 bytes of the
+ * upper 2MB of the 4MB memory space.  The board memory
+ * will be mapped into the low 2MB of the 4MB memory space
+ */
+
+/* Potential location of PCI Bios from E0000 to FFFFF*/
+#define PCI_BIOS_SIZE          0x00020000
+
+/* Size of Memory and I/O for PCI (4MB) */
+#define PCI_RAM_SIZE           0x00400000
+
+/* Size of Memory (2MB) */
+#define PCI_MEM_SIZE           0x00200000
+
+/* Max PCI Window Size (2MB) */
+#define PCI_WIN_SIZE           0x00200000
+
+#define PCI_WIN_SHIFT          21 /* 21 bits max */
+
+/* Offset of I/0 in Memory (2MB) */
+#define PCI_IO_OFFSET          0x00200000
+
+/* Size of IO (2MB) */
+#define PCI_IO_SIZE            0x00200000
+
+#endif
diff --git a/drivers/staging/dgap/dgap_proc.c b/drivers/staging/dgap/dgap_proc.c
new file mode 100644 (file)
index 0000000..6950a6c
--- /dev/null
@@ -0,0 +1,1924 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the 
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *     NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE!
+ *
+ *     This is shared code between Digi's CVS archive and the
+ *     Linux Kernel sources.
+ *     Changing the source just for reformatting needlessly breaks
+ *     our CVS diff history.
+ *
+ *     Send any bug fixes/changes to:  Eng.Linux at digi dot com.
+ *     Thank you.
+ *
+ *
+ * $Id: dgap_proc.c,v 1.2 2010/12/22 21:22:39 markh Exp $
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/sched.h>               /* For jiffies, task states */
+#include <linux/interrupt.h>           /* For tasklet and interrupt structs/defines */
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/proc_fs.h>
+#include <linux/serial_reg.h>
+#include <linux/sched.h>               /* For in_egroup_p() */
+#include <linux/string.h>
+#include <asm/uaccess.h>               /* For copy_from_user/copy_to_user */
+#include <linux/cred.h>
+
+#include "dgap_driver.h"
+#include "dgap_proc.h"
+#include "dgap_mgmt.h"
+#include "dgap_conf.h"
+#include "dgap_parse.h"
+#include "dgap_fep5.h"
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)
+#define init_MUTEX(sem)         sema_init(sem, 1)
+#endif
+
+/* The /proc/dgap directory */
+static struct proc_dir_entry *ProcDGAP;
+
+
+/* File operation declarations */
+static int     dgap_gen_proc_open(struct inode *, struct file *);
+static int     dgap_gen_proc_close(struct inode *, struct file *);
+static ssize_t dgap_gen_proc_read(struct file *file, char __user *buf, size_t count, loff_t *ppos);
+static ssize_t dgap_gen_proc_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos);
+
+static int dgap_proc_chk_perm(struct inode *, int);
+
+static const struct file_operations dgap_proc_file_ops =
+{
+       .owner =        THIS_MODULE,
+       .read =         dgap_gen_proc_read,     /* read         */
+       .write =        dgap_gen_proc_write,    /* write        */
+       .open =         dgap_gen_proc_open,     /* open         */
+       .release =      dgap_gen_proc_close,    /* release      */
+};
+
+
+static struct inode_operations dgap_proc_inode_ops =
+{
+       .permission =   dgap_proc_chk_perm
+};
+
+
+static void dgap_register_proc_table(struct dgap_proc_entry *, struct proc_dir_entry *);
+static void dgap_unregister_proc_table(struct dgap_proc_entry *, struct proc_dir_entry *);
+static void dgap_remove_proc_entry(struct proc_dir_entry *pde);
+
+
+/* Stuff in /proc/ */
+static int dgap_read_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_write_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               const char __user *buffer, ssize_t *lenp, loff_t *ppos);
+
+static int dgap_read_mknod(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+
+static struct dgap_proc_entry dgap_table[] = {
+       {DGAP_INFO,     "info", 0600, NULL, NULL, NULL, &dgap_read_info, &dgap_write_info,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_table[0].excl_sem, 1), 0, NULL },
+       {DGAP_MKNOD,    "mknod", 0600, NULL, NULL, NULL, &dgap_read_mknod, NULL,
+               NULL, __SEMAPHORE_INITIALIZER(dgap_table[1].excl_sem, 1), 0, NULL },
+
+       {0}
+};
+
+
+/* Stuff in /proc/<board>/ */
+static int dgap_read_board_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_board_vpd(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_board_vpddata(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_board_mknod(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_board_ttystats(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_board_ttyflags(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+
+static struct dgap_proc_entry dgap_board_table[] = {
+       {DGAP_BOARD_INFO, "info", 0600, NULL, NULL, NULL, &dgap_read_board_info, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_board_table[0].excl_sem, 1), 0, NULL },
+       {DGAP_BOARD_VPD, "vpd", 0600, NULL, NULL, NULL, &dgap_read_board_vpd, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_board_table[1].excl_sem, 1), 0, NULL },
+       {DGAP_BOARD_VPDDATA, "vpddata", 0600, NULL, NULL, NULL, &dgap_read_board_vpddata, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_board_table[2].excl_sem, 1), 0, NULL },
+       {DGAP_BOARD_TTYSTATS, "stats", 0600, NULL, NULL, NULL, &dgap_read_board_ttystats, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_board_table[3].excl_sem, 1), 0, NULL },
+       {DGAP_BOARD_TTYFLAGS, "flags", 0600, NULL, NULL, NULL, &dgap_read_board_ttyflags, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_board_table[4].excl_sem, 1), 0, NULL },
+       {DGAP_BOARD_MKNOD, "mknod", 0600, NULL, NULL, NULL, &dgap_read_board_mknod, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_board_table[5].excl_sem, 1), 0, NULL },
+       {0}
+};
+
+
+/* Stuff in /proc/<board>/<channel> */
+static int dgap_read_channel_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_open_channel_sniff(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               void *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_close_channel_sniff(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               void *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_channel_sniff(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_channel_custom_ttyname(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_channel_custom_prname(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+static int dgap_read_channel_fepstate(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos);
+
+
+static struct dgap_proc_entry dgap_channel_table[] = {
+       {DGAP_PORT_INFO, "info", 0600, NULL, NULL, NULL, &dgap_read_channel_info, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_channel_table[0].excl_sem, 1), 0, NULL },
+       {DGAP_PORT_SNIFF, "sniff", 0600, NULL, &dgap_open_channel_sniff, &dgap_close_channel_sniff, &dgap_read_channel_sniff, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_channel_table[1].excl_sem, 1), 0, NULL},
+       {DGAP_PORT_CUSTOM_TTYNAME, "ttyname", 0600, NULL, NULL, NULL, &dgap_read_channel_custom_ttyname, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_channel_table[2].excl_sem, 1), 0, NULL },
+       {DGAP_PORT_CUSTOM_PRNAME, "prname", 0600, NULL, NULL, NULL, &dgap_read_channel_custom_prname, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_channel_table[3].excl_sem, 1), 0, NULL },
+       {DGAP_PORT_FEPSTATE, "fepstate", 0600, NULL, NULL, NULL, &dgap_read_channel_fepstate, NULL,
+                       NULL, __SEMAPHORE_INITIALIZER(dgap_channel_table[4].excl_sem, 1), 0, NULL },
+       {0}
+};
+
+
+/*
+ * test_perm does NOT grant the superuser all rights automatically, because
+ * some entries are readonly even to root.
+ */
+static inline int test_perm(int mode, int op)
+{
+       if (!current_euid())
+               mode >>= 6;
+       else if (in_egroup_p(0))
+               mode >>= 3;
+       if ((mode & op & 0007) == op)
+               return 0;
+       if (capable(CAP_SYS_ADMIN))
+               return 0;
+       return -EACCES;
+}
+
+
+/*
+ * /proc/sys support
+ */
+static inline int dgap_proc_match(int len, const char *name, struct proc_dir_entry *de)
+{
+       if (!de || !de->low_ino)
+               return 0;
+       if (de->namelen != len)  
+               return 0;
+       return !memcmp(name, de->name, len);
+}
+
+
+/*
+ *  Scan the entries in table and add them all to /proc at the position
+ *  referred to by "root"
+ */
+static void dgap_register_proc_table(struct dgap_proc_entry *table, struct proc_dir_entry *root)
+{
+       struct proc_dir_entry *de;
+       int len;
+       mode_t mode;
+
+       for (; table->magic; table++) {
+               /* Can't do anything without a proc name. */
+               if (!table->name) {
+                       DPR_PROC(("dgap_register_proc_table, no name...\n"));
+                       continue;
+               }
+
+               /* Maybe we can't do anything with it... */
+               if (!table->read_handler && !table->write_handler && !table->child) {
+                       DPR_PROC((KERN_WARNING "DGAP PROC: Can't register %s\n", table->name));
+                       continue;
+               }
+
+               len = strlen(table->name);
+               mode = table->mode;
+               de = NULL;
+
+               if (!table->child) {
+                       mode |= S_IFREG;
+               } else {
+                       mode |= S_IFDIR;
+                       for (de = root->subdir; de; de = de->next) {
+                               if (dgap_proc_match(len, table->name, de))
+                                       break;
+                       }
+
+                       /* If the subdir exists already, de is non-NULL */
+               }
+
+               if (!de) {
+                       de = create_proc_entry(table->name, mode, root);
+                       if (!de)
+                               continue;
+                       de->data = (void *) table;
+                       if (!table->child) {
+                               de->proc_iops = &dgap_proc_inode_ops;
+                               de->proc_fops = &dgap_proc_file_ops;            
+                       }
+               }
+
+               table->de = de;
+
+               if (de->mode & S_IFDIR)
+                       dgap_register_proc_table(table->child, de);
+
+       }
+}
+
+
+
+/*
+ * Unregister a /proc sysctl table and any subdirectories.
+ */
+static void dgap_unregister_proc_table(struct dgap_proc_entry *table, struct proc_dir_entry *root)
+{
+       struct proc_dir_entry *de;
+
+       for (; table->magic; table++) {
+               if (!(de = table->de))
+                       continue;
+
+               if (de->mode & S_IFDIR) {
+                       if (!table->child) {
+                               DPR_PROC((KERN_ALERT "Help - malformed sysctl tree on free\n"));
+                               continue;
+                       }
+
+                       /* recurse down into subdirectory... */
+                       DPR_PROC(("Recursing down a directory...\n"));
+                       dgap_unregister_proc_table(table->child, de);
+
+                       /* Don't unregister directories which still have entries.. */
+                       if (de->subdir)
+                               continue;
+               }   
+               /* Don't unregister proc entries that are still being used.. */
+               if ((atomic_read(&de->count)) != 1) {
+                       DPR_PROC(("proc entry in use... Not removing...\n"));
+                       continue;
+               }
+               dgap_remove_proc_entry(de);
+               table->de = NULL;
+       }
+}
+
+
+
+static int dgap_gen_proc_open(struct inode *inode, struct file *file)
+{
+       struct proc_dir_entry *de;
+       struct dgap_proc_entry *entry;
+       int (*handler) (struct dgap_proc_entry *table, int dir, struct file *filp,
+               void *buffer, ssize_t *lenp, loff_t *ppos);
+       int ret = 0, error = 0;
+
+       de = (struct proc_dir_entry *) PDE(file->f_dentry->d_inode);
+       if (!de || !de->data) {
+               ret = -ENXIO;
+               goto done;
+       }
+
+       entry = (struct dgap_proc_entry *) de->data;
+       if (!entry) {
+               ret = -ENXIO;
+               goto done;
+       }
+
+       down(&entry->excl_sem);
+
+       if (entry->excl_cnt) {
+               ret = -EBUSY;
+       } else {
+               entry->excl_cnt++;
+               handler = entry->open_handler;
+               if (handler) {
+                       error = (*handler) (entry, OUTBOUND, file, NULL, NULL, NULL);
+                       if (error) {
+                               entry->excl_cnt--;
+                               ret = error;
+                       }
+               }
+       }
+
+       up(&entry->excl_sem);
+
+done:
+
+       return ret;
+}
+
+
+static int dgap_gen_proc_close(struct inode *inode, struct file *file)
+{
+       struct proc_dir_entry *de;
+       int (*handler) (struct dgap_proc_entry *table, int dir, struct file *filp,
+               void *buffer, ssize_t *lenp, loff_t *ppos);
+       struct dgap_proc_entry *entry;
+       int error = 0;
+
+       de = (struct proc_dir_entry *) PDE(file->f_dentry->d_inode);
+       if (!de || !de->data)
+               goto done;
+
+       entry = (struct dgap_proc_entry *) de->data;
+       if (!entry)
+               goto done;
+
+       down(&entry->excl_sem);
+
+       if (entry->excl_cnt)
+               entry->excl_cnt = 0;
+
+
+       handler = entry->close_handler;
+       if (handler) {
+               error = (*handler) (entry, OUTBOUND, file, NULL, NULL, NULL);
+       }
+
+       up(&entry->excl_sem);
+
+done:
+       return 0;
+}
+
+
+static ssize_t dgap_gen_proc_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+       struct proc_dir_entry *de;
+       struct dgap_proc_entry *entry;
+       int (*handler) (struct dgap_proc_entry *table, int dir, struct file *filp,
+               char __user *buffer, ssize_t *lenp, loff_t *ppos2);
+       ssize_t res;
+       ssize_t error;
+
+       de = (struct proc_dir_entry*) PDE(file->f_dentry->d_inode);
+       if (!de || !de->data)
+               return -ENXIO; 
+
+       entry = (struct dgap_proc_entry *) de->data;
+       if (!entry)
+               return -ENXIO;
+
+       /* Test for read permission */
+       if (test_perm(entry->mode, 4))
+               return -EPERM;
+
+       res = count;
+
+       handler = entry->read_handler;
+       if (!handler)
+               return -ENXIO;
+
+       error = (*handler) (entry, OUTBOUND, file, buf, &res, ppos);
+       if (error)
+               return error;
+
+       return res;
+}
+
+
+static ssize_t dgap_gen_proc_write(struct file *file, const char __user *buf,
+                                   size_t count, loff_t *ppos)
+{
+       struct proc_dir_entry *de;
+       struct dgap_proc_entry *entry;
+       int (*handler) (struct dgap_proc_entry *table, int dir, struct file *filp,
+               const char __user *buffer, ssize_t *lenp, loff_t *ppos2);
+       ssize_t res;   
+       ssize_t error;
+
+       de = (struct proc_dir_entry *) PDE(file->f_dentry->d_inode);
+       if (!de || !de->data)
+               return -ENXIO;
+
+       entry = (struct dgap_proc_entry *) de->data;
+       if (!entry)
+               return -ENXIO;
+
+       /* Test for write permission */
+       if (test_perm(entry->mode, 2))
+               return -EPERM;
+
+       res = count;
+
+       handler = entry->write_handler;
+       if (!handler)
+               return -ENXIO;
+
+       error = (*handler) (entry, INBOUND, file, buf, &res, ppos);
+       if (error)
+               return error; 
+
+       return res;
+}
+
+
+static int dgap_proc_chk_perm(struct inode *inode, int op)
+{
+       return test_perm(inode->i_mode, op);
+}
+
+
+/*               
+ *  Return what is (hopefully) useful information about the
+ *  driver. 
+ */
+static int dgap_read_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+
+       DPR_PROC(("dgap_proc_info\n"));
+
+       if (done) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       p += sprintf(p, "Driver:\t\t%s\n", DG_NAME);
+       p += sprintf(p, "\n");
+       p += sprintf(p, "Debug:\t\t0x%x\n", dgap_debug);
+       p += sprintf(p, "Rawreadok:\t0x%x\n", dgap_rawreadok);
+       p += sprintf(p, "Max Boards:\t%d\n", MAXBOARDS);
+       p += sprintf(p, "Total Boards:\t%d\n", dgap_NumBoards);
+       p += sprintf(p, "Poll rate:\t%dms\n", dgap_poll_tick);
+       p += sprintf(p, "Poll counter:\t%ld\n", dgap_poll_counter);
+       p += sprintf(p, "State:\t\t%s\n", dgap_driver_state_text[dgap_driver_state]);
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+/*
+ *  When writing to the "info" entry point, I actually allow one
+ *  to modify certain variables.  This may be a sleazy overload
+ *  of this /proc entry, but I don't want:
+ *
+ *     a. to clutter /proc more than I have to
+ *     b. to overload the "config" entry, which would be somewhat
+ *        more natural
+ *     c. necessarily advertise the fact this ability exists
+ *
+ *  The continued support of this feature has not yet been
+ *  guaranteed.
+ *
+ *  Writing operates on a "state machine" principle.
+ *
+ *  State 0: waiting for a symbol to start.  Waiting for anything
+ *           which isn't " ' = or whitespace.
+ *  State 1: reading a symbol.  If the character is a space, move
+ *           to state 2.  If =, move to state 3.  If " or ', move
+ *           to state 0.
+ *  State 2: Waiting for =... suck whitespace.  If anything other
+ *           than whitespace, drop to state 0.
+ *  State 3: Got =.  Suck whitespace waiting for value to start.
+ *           If " or ', go to state 4 (and remember which quote it
+ *           was).  Otherwise, go to state 5.
+ *  State 4: Reading value, within quotes.  Everything is added to
+ *           value up until the matching quote.  When you hit the
+ *           matching quote, try to set the variable, then state 0.
+ *  State 5: Reading value, outside quotes.  Everything not " ' =
+ *           or whitespace goes in value.  Hitting one of the
+ *           terminators tosses us back to state 0 after trying to
+ *           set the variable.
+ */
+typedef enum {
+       INFO_NONE, INFO_INT, INFO_CHAR, INFO_SHORT,
+       INFO_LONG, INFO_PTR, INFO_STRING, INFO_END
+} info_proc_var_val;
+
+static struct {
+       char              *name;
+       info_proc_var_val  type;
+       int                rw;       /* 0=readonly */
+       void              *val_ptr;
+} dgap_info_vars[] = {
+       { "rawreadok",   INFO_INT,    1, (void *) &dgap_rawreadok },
+       { "pollrate",    INFO_INT,    1, (void *) &dgap_poll_tick },
+       { NULL, INFO_NONE, 0, NULL },
+       { "debug",   INFO_LONG,   1, (void *) &dgap_debug },
+       { NULL, INFO_END, 0, NULL }
+};
+
+static void dgap_set_info_var(char *name, char *val)
+{
+       int i;
+       unsigned long newval;
+       unsigned char charval;
+       unsigned short shortval;
+       unsigned int intval;
+
+       for (i = 0; dgap_info_vars[i].type != INFO_END; i++) {
+               if (dgap_info_vars[i].name)
+                       if (!strcmp(name, dgap_info_vars[i].name))
+                               break;
+       }
+
+       if (dgap_info_vars[i].type == INFO_END)
+               return;
+       if (dgap_info_vars[i].rw == 0)
+               return;
+       if (dgap_info_vars[i].val_ptr == NULL)
+               return;
+
+       newval = simple_strtoul(val, NULL, 0 ); 
+
+       switch (dgap_info_vars[i].type) {
+       case INFO_CHAR:
+               charval = newval & 0xff;
+               APR(("Modifying %s (%lx) <= 0x%02x  (%d)\n",
+                          name, (long)(dgap_info_vars[i].val_ptr ),
+                          charval, charval));
+               *(uchar *)(dgap_info_vars[i].val_ptr) = charval;
+               break;
+       case INFO_SHORT:
+               shortval = newval & 0xffff;
+               APR(("Modifying %s (%lx) <= 0x%04x  (%d)\n",
+                          name, (long)(dgap_info_vars[i].val_ptr),
+                          shortval, shortval));
+               *(ushort *)(dgap_info_vars[i].val_ptr) = shortval;
+               break;
+       case INFO_INT:
+               intval = newval & 0xffffffff;
+               APR(("Modifying %s (%lx) <= 0x%08x  (%d)\n",
+                          name, (long)(dgap_info_vars[i].val_ptr),
+                          intval, intval));
+               *(uint *)(dgap_info_vars[i].val_ptr) = intval;
+               break;
+       case INFO_LONG:
+               APR(("Modifying %s (%lx) <= 0x%lx  (%ld)\n",
+                          name, (long)(dgap_info_vars[i].val_ptr),
+                          newval, newval));
+               *(ulong *)(dgap_info_vars[i].val_ptr) = newval;
+               break;
+       case INFO_PTR:
+       case INFO_STRING:
+       case INFO_END:
+       case INFO_NONE:
+       default:
+               break;
+       }
+}
+
+static int dgap_write_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               const char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       static int state = 0;
+       #define MAXSYM 255
+       static int sympos, valpos;
+       static char sym[MAXSYM + 1];
+       static char val[MAXSYM + 1];
+       static int quotchar = 0;
+
+       int i;
+
+       long len;
+       #define INBUFLEN 256
+       char inbuf[INBUFLEN];
+
+       if (*ppos == 0) {
+               state = 0;
+               sympos = 0; sym[0] = 0;
+               valpos = 0; val[0] = 0;
+               quotchar = 0;
+       }
+
+       if ((!*lenp) || (dir != INBOUND)) {
+               *lenp = 0;
+               return 0;
+       }
+
+       len = *lenp;
+
+       if (len > INBUFLEN - 1)
+               len = INBUFLEN - 1;
+
+       if (copy_from_user(inbuf, buffer, len))
+               return -EFAULT;
+
+       inbuf[len] = 0;
+
+       for (i = 0; i < len; i++) {
+               unsigned char c = inbuf[i];
+
+               switch (state) {
+               case 0:
+                       quotchar = sympos = valpos = sym[0] = val[0] = 0;
+                       if (!isspace(c) && (c != '\"') &&
+                           (c != '\'') && (c != '=')) {
+                               sym[sympos++] = c;
+                               state = 1;
+                               break;
+                       }
+                       break;
+               case 1:
+                       if (isspace(c)) {
+                               sym[sympos] = 0;
+                               state = 2;
+                               break;
+                       }
+                       if (c == '=') {
+                               sym[sympos] = 0;
+                               state = 3;
+                               break;
+                       }
+                       if ((c == '\"' ) || ( c == '\'' )) {
+                               state = 0;
+                               break;
+                       }
+                       if (sympos < MAXSYM) sym[sympos++] = c;
+                       break;
+               case 2:
+                       if (isspace(c)) break;
+                       if (c == '=') {
+                               state = 3;
+                               break;
+                       }
+                       if ((c != '\"') && (c != '\'')) {
+                               quotchar = sympos = valpos = sym[0] = val[0] = 0;
+                               sym[sympos++] = c;
+                               state = 1;
+                               break;
+                       }
+                       state = 0;
+                       break;
+               case 3:
+                       if (isspace(c)) break;
+                       if (c == '=') {
+                               state = 0;
+                               break;
+                       }
+                       if ((c == '\"') || (c == '\'')) {
+                               state = 4;
+                               quotchar = c;
+                               break;
+                       }
+                       val[valpos++] = c;
+                       state = 5;
+                       break;
+               case 4:
+                       if (c == quotchar) {
+                               val[valpos] = 0;
+                               dgap_set_info_var(sym, val);
+                               state = 0;
+                               break;
+                       }
+                       if (valpos < MAXSYM) val[valpos++] = c;
+                       break;
+               case 5:
+                       if (isspace(c) || (c == '\"') ||
+                           (c == '\'') || (c == '=')) {
+                               val[valpos] = 0;
+                               dgap_set_info_var(sym, val);
+                               state = 0;
+                               break;
+                       }
+                       if (valpos < MAXSYM) val[valpos++] = c;
+                       break;
+               default:
+                       break;
+               }
+       }
+
+       *lenp = len;
+       *ppos += len;
+               
+       return len;
+}
+
+
+/*
+ *  Return mknod information for the driver's devices.
+ */                                             
+static int dgap_read_mknod(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+
+       DPR_PROC(("dgap_proc_info\n"));
+
+       if (done) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       DPR_PROC(("dgap_proc_mknod\n"));
+
+       p += sprintf(p, "#\tCreate the management device.\n");
+       p += sprintf(p, "/dev/dg/dgap/mgmt\t%d\t%d\t%d\t%d\n", DIGI_DGAP_MAJOR, MGMT_MGMT, 1, 0);
+       p += sprintf(p, "/dev/dg/dgap/downld\t%d\t%d\t%d\t%d\n", DIGI_DGAP_MAJOR, MGMT_DOWNLD, 1, 0);
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+
+/*               
+ *  Return what is (hopefully) useful information about the specific board.
+ */
+static int dgap_read_board_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+       char *name;
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       brd = (struct board_t *) table->data;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       name = brd->name;
+
+       p += sprintf(p, "Board Name = %s\n", name);
+       p += sprintf(p, "Board Type = %d\n", brd->type);
+       p += sprintf(p, "Number of Ports = %d\n", brd->nasync);
+
+       /*
+        * report some things about the PCI bus that are important
+        * to some applications
+        */
+       p += sprintf(p, "Vendor ID = 0x%x\n", brd->vendor);
+       p += sprintf(p, "Device ID = 0x%x\n", brd->device);
+       p += sprintf(p, "Subvendor ID = 0x%x\n", brd->subvendor);
+       p += sprintf(p, "Subdevice ID = 0x%x\n", brd->subdevice);
+       p += sprintf(p, "Bus = %d\n", brd->pci_bus);
+       p += sprintf(p, "Slot = %d\n", brd->pci_slot);
+
+       /*
+        * report the physical addresses assigned to us when we got
+        * registered
+        */     
+       p += sprintf(p, "Memory Base Address = 0x%lx\n", brd->membase);
+       p += sprintf(p, "Remapped Memory Base Address = 0x%p\n", brd->re_map_membase);
+
+       p += sprintf(p, "Current state of board = %s\n", dgap_state_text[brd->state]);
+
+       if (brd->bd_flags & BD_FEP5PLUS)
+               p += sprintf(p, "FEP5+ Support = Yes\n");
+       else
+               p += sprintf(p, "FEP5+ Support = No\n");
+
+        p += sprintf(p, "Interrupt #: %ld. Times interrupted: %ld\n",
+               brd->irq, brd->intr_count);
+        p += sprintf(p, "Majors allocated to board = TTY: %d PR: %d\n",
+               brd->SerialDriver->major, brd->PrintDriver->major);
+
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+static int dgap_read_board_vpddata(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       int i = 0, j = 0;
+       char *p = buf;
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       brd = (struct board_t *) table->data;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       p += sprintf(p, "\n      0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F\n");
+
+       /* Ending at 0xC0, because nothing but zeros exist after that offset */
+       for (i = 0; i < 0xC0; i++) {
+               j = i;
+               if (!(i % 16)) {
+                       if (j > 0) {
+                               p += sprintf(p, "    ");
+                               for (j = i - 16; j < i; j++) {
+                                       if (0x20 <= brd->vpd[j] && brd->vpd[j] <= 0x7e)
+                                               p += sprintf(p, "%c", brd->vpd[j]);
+                                       else
+                                               p += sprintf(p, ".");
+                               }
+                               p += sprintf(p, "\n");
+                       }
+                       p += sprintf(p, "%04X ", i);
+               }
+               p += sprintf(p, "%02X ", brd->vpd[i]);
+       }
+       if (!(i % 16)) {
+               p += sprintf(p, "    ");
+               for (j = i - 16; j < i; j++) {
+                       if (0x20 <= brd->vpd[j] && brd->vpd[j] <= 0x7e)
+                               p += sprintf(p, "%c", brd->vpd[j]);
+                       else
+                               p += sprintf(p, ".");   
+               }
+               p += sprintf(p, "\n");
+       }
+
+       p += sprintf(p, "\n");
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf;
+       done = 1;
+       return 0;
+}
+
+
+static int dgap_read_board_vpd(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+       long ptr;
+       u16 i, j;
+       uchar len;
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       brd = (struct board_t *) table->data;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC) || !(brd->bd_flags & BD_HAS_VPD)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       ptr = 0;
+
+       /* Description */
+       if (brd->vpd[ptr] == 0x82) {
+               ptr++;
+
+               p += sprintf(p, "*DS: ");
+               len = brd->vpd[ptr];
+               ptr += 2;
+               for (i = len; i; i--) {
+                       uchar a;
+                       a = brd->vpd[ptr];
+                       ptr++;
+                       p += sprintf(p, "%c", a);
+               }
+               p += sprintf(p, "\n");
+       }
+
+       /* VPD */
+       if (brd->vpd[ptr] == 0x90) {
+               ptr += 3;
+
+               i = brd->vpd[ptr];
+
+               while (i > 0) {
+
+                       uchar a, b;
+                       uchar str1[16];
+
+                       a = brd->vpd[ptr];
+                       ptr++;
+                       b = brd->vpd[ptr];
+                       ptr++;
+
+                       if ((a == 'P') && (b == 'N')) {
+                               strcpy (str1, "*PN");
+                       }
+                       else if ((a == 'E') && (b == 'C')) {
+                               strcpy (str1, "*EC");
+                       }
+                       else if ((a == 'F') && (b == 'N')) {
+                               strcpy (str1, "*FN");
+                       }       
+                       else if ((a == 'M') && (b == 'N')) {
+                               strcpy (str1, "*MF");
+                       }
+                       else if ((a == 'S') && (b == 'N')) {
+                               strcpy (str1, "*SN");
+                       }
+                       else if ((a == 'R') && (b == 'L')) {
+                               strcpy (str1, "*RL");
+                       }
+                       else if ((a == 'D') && (b == 'D')) {
+                               strcpy (str1, "*DD");
+                       }
+                       else if ((a == 'D') && (b == 'G')) {
+                               strcpy (str1, "*DG");
+                       }
+                       else if ((a == 'L') && (b == 'L')) {
+                               strcpy (str1, "*LL");
+                       }
+                       else {
+                               break;
+                       }
+
+                       len = brd->vpd[ptr];
+                       ptr++;
+
+                       p += sprintf(p, "%s: ", str1);
+
+                       for (j = len; j; j--) {
+                               uchar aa;
+                               aa = brd->vpd[ptr];
+                               ptr++;
+                               p += sprintf(p, "%c", aa);
+                       }
+
+                       p += sprintf(p, "\n");
+
+                       i -= (3 + len);
+               }
+       }
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf;
+       done = 1;
+       return 0;
+}
+
+
+
+/*
+ *  Return what is (hopefully) useful stats about the specific board's ttys
+ */
+static int dgap_read_board_ttystats(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+       int i = 0;
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       brd = (struct board_t *) table->data;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       /* Prepare the Header Labels */
+       p += sprintf(p, "%2s %10s %23s %10s\n",
+               "Ch", "Chars Rx", "  Rx Par--Brk--Frm--Ovr", "Chars Tx");
+
+        for (i = 0; i < brd->nasync; i++) {
+
+               struct channel_t *ch = brd->channels[i];
+               p += sprintf(p, "%2d ", i);
+               p += sprintf(p, "%10ld ", ch->ch_rxcount);
+               p += sprintf(p, "    %4ld %4ld %4ld %4ld ", ch->ch_err_parity,
+                       ch->ch_err_break, ch->ch_err_frame, ch->ch_err_overrun);
+               p += sprintf(p, "%10ld ", ch->ch_txcount);
+               p += sprintf(p, "\n");
+       }
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+/*
+ *  Return what is (hopefully) useful flags about the specific board's ttys
+ */
+static int dgap_read_board_ttyflags(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+       int i = 0;
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       brd = (struct board_t *) table->data;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       /* Prepare the Header Labels */
+       p += sprintf(p, "%2s %5s %5s %5s %5s %5s %10s  Line Status Flags\n",
+               "Ch", "CFlag", "IFlag", "OFlag", "LFlag", "DFlag", "Baud");
+
+        for (i = 0; i < brd->nasync; i++) {
+
+               struct channel_t *ch = brd->channels[i];
+
+               p += sprintf(p, "%2d ", i);
+               p += sprintf(p, "%5x ", ch->ch_c_cflag);
+               p += sprintf(p, "%5x ", ch->ch_c_iflag);
+               p += sprintf(p, "%5x ", ch->ch_c_oflag);
+               p += sprintf(p, "%5x ", ch->ch_c_lflag);
+               p += sprintf(p, "%5x ", ch->ch_digi.digi_flags);
+               p += sprintf(p, "%10d ", ch->ch_baud_info);
+
+               if (!ch->ch_open_count) {
+                       p += sprintf(p, " -- -- -- -- -- -- --") ;
+               } else {
+                       p += sprintf(p, " op %s %s %s %s %s %s",
+                               (ch->ch_mostat & UART_MCR_RTS) ? "rs" : "--",
+                               (ch->ch_mistat & UART_MSR_CTS) ? "cs" : "--",
+                               (ch->ch_mostat & UART_MCR_DTR) ? "tr" : "--",
+                               (ch->ch_mistat & UART_MSR_DSR) ? "mr" : "--",
+                               (ch->ch_mistat & UART_MSR_DCD) ? "cd" : "--",
+                               (ch->ch_mistat & UART_MSR_RI)  ? "ri" : "--");
+               }
+
+               p += sprintf(p, "\n");
+       }
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+/*
+ *  Return mknod information for the board's devices.
+ */                                             
+static int dgap_read_board_mknod(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+
+       int     bn;
+       struct cnode *cptr = NULL;
+       int found = FALSE;
+       int ncount = 0;
+       int starto = 0;
+
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       brd = (struct board_t *) table->data;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+        bn = brd->boardnum;
+
+       /*
+        * For each board, output the device information in
+        * a handy table format...
+        */
+       p += sprintf(p, "# NAME\t\tMAJOR\tMINOR\tCOUNT\tSTART\n");
+
+
+       for (cptr = brd->bd_config; cptr; cptr = cptr->next) {
+
+               if ((cptr->type == BNODE) &&
+                   ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
+                    (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
+                    (cptr->u.board.type == PAPORT8))) {
+
+                               found = TRUE;
+                               if (cptr->u.board.v_start)
+                                       starto = cptr->u.board.start;
+                               else
+                                       starto = 1;
+               }
+
+               if (cptr->type == TNODE && found == TRUE) {
+                       char *ptr1;
+                       if (strstr(cptr->u.ttyname, "tty")) {
+                               ptr1 = cptr->u.ttyname;
+                               ptr1 += 3;
+                       }
+                       else {
+                               ptr1 = cptr->u.ttyname;
+                       }
+
+                       /* TTY devices */
+                       p += sprintf(p, "tty%s\t\t%d\t%d\t%d\t%d\n",
+                               ptr1, brd->SerialDriver->major,
+                               0, dgap_config_get_number_of_ports(brd), starto);
+
+                       /* PR devices */
+                       p += sprintf(p, "pr%s\t\t%d\t%d\t%d\t%d\n",
+                               ptr1, brd->PrintDriver->major,
+                               0, dgap_config_get_number_of_ports(brd), starto);
+               }
+
+               if (cptr->type == CNODE) {
+
+                       /* TTY devices */
+                       p += sprintf(p, "tty%s\t\t%d\t%d\t%d\t%d\n",
+                               cptr->u.conc.id, brd->SerialDriver->major,
+                               ncount, cptr->u.conc.nport,
+                               cptr->u.conc.v_start ? cptr->u.conc.start : 1);
+
+                       /* PR devices */
+                       p += sprintf(p, "pr%s\t\t%d\t%d\t%d\t%d\n",
+                               cptr->u.conc.id, brd->PrintDriver->major,
+                               ncount, cptr->u.conc.nport,
+                               cptr->u.conc.v_start ? cptr->u.conc.start : 1);
+
+                       ncount += cptr->u.conc.nport;
+               }
+
+               if (cptr->type == MNODE) {
+
+                       /* TTY devices */
+                       p += sprintf(p, "tty%s\t\t%d\t%d\t%d\t%d\n",
+                               cptr->u.module.id, brd->SerialDriver->major,
+                               ncount, cptr->u.module.nport,
+                               cptr->u.module.v_start ? cptr->u.module.start : 1);
+
+                       /* PR devices */
+                       p += sprintf(p, "pr%s\t\t%d\t%d\t%d\t%d\n",
+                               cptr->u.module.id, brd->PrintDriver->major,
+                               ncount, cptr->u.module.nport,
+                               cptr->u.module.v_start ? cptr->u.module.start : 1);
+
+                       ncount += cptr->u.module.nport;
+
+               }
+       }
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+
+
+
+/*
+ *  Return what is (hopefully) useful information about the specific channel.
+ */
+static int dgap_read_channel_info(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct channel_t *ch;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+
+       DPR_PROC(("dgap_proc_info\n"));
+
+       ch = (struct channel_t *) table->data;
+
+       if (done || !ch || (ch->magic != DGAP_CHANNEL_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       p += sprintf(p, "Port number:\t\t%d\n", ch->ch_portnum);
+       p += sprintf(p, "\n");
+
+       /* Prepare the Header Labels */
+       p += sprintf(p, "%10s %23s %10s\n",
+               "Chars Rx", "  Rx Par--Brk--Frm--Ovr", "Chars Tx");
+       p += sprintf(p, "%10ld ", ch->ch_rxcount);
+       p += sprintf(p, "    %4ld %4ld %4ld %4ld ", ch->ch_err_parity,
+               ch->ch_err_break, ch->ch_err_frame, ch->ch_err_overrun);
+       p += sprintf(p, "%10ld ", ch->ch_txcount);  
+       p += sprintf(p, "\n\n");
+
+       /* Prepare the Header Labels */
+       p += sprintf(p, "%5s %5s %5s %5s %5s %10s  Line Status Flags\n",
+               "CFlag", "IFlag", "OFlag", "LFlag", "DFlag", "Baud");
+
+       p += sprintf(p, "%5x ", ch->ch_c_cflag);
+       p += sprintf(p, "%5x ", ch->ch_c_iflag);
+       p += sprintf(p, "%5x ", ch->ch_c_oflag);
+       p += sprintf(p, "%5x ", ch->ch_c_lflag);
+       p += sprintf(p, "%5x ", ch->ch_digi.digi_flags);
+       p += sprintf(p, "%10d ", ch->ch_baud_info);
+       if (!ch->ch_open_count) {
+               p += sprintf(p, " -- -- -- -- -- -- --") ;
+       } else {
+               p += sprintf(p, " op %s %s %s %s %s %s",
+                       (ch->ch_mostat & UART_MCR_RTS) ? "rs" : "--",
+                       (ch->ch_mistat & UART_MSR_CTS) ? "cs" : "--",
+                       (ch->ch_mostat & UART_MCR_DTR) ? "tr" : "--",
+                       (ch->ch_mistat & UART_MSR_DSR) ? "mr" : "--",
+                       (ch->ch_mistat & UART_MSR_DCD) ? "cd" : "--",
+                       (ch->ch_mistat & UART_MSR_RI)  ? "ri" : "--");
+       }
+       p += sprintf(p, "\n\n");
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+/*
+ *  Return mknod information for the board's devices.
+ */                                             
+static int dgap_read_channel_custom_ttyname(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct channel_t *ch;
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+
+       int     cn;
+       int     bn;
+       struct cnode *cptr = NULL;
+       int found = FALSE;
+       int ncount = 0;
+       int starto = 0;
+       int i = 0;
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       ch = (struct channel_t *) table->data;
+
+       if (done || !ch || (ch->magic != DGAP_CHANNEL_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       brd = ch->ch_bd;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+        bn = brd->boardnum;
+       cn = ch->ch_portnum;
+
+       /*
+        * For each board, output the device information in
+        * a handy table format...
+        */
+
+       for (cptr = brd->bd_config; cptr; cptr = cptr->next) {
+
+               if ((cptr->type == BNODE) &&
+                   ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
+                    (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
+                    (cptr->u.board.type == PAPORT8))) {
+
+                               found = TRUE;
+                               if (cptr->u.board.v_start)
+                                       starto = cptr->u.board.start;
+                               else
+                                       starto = 1;
+               }
+
+               if (cptr->type == TNODE && found == TRUE) {
+                       char *ptr1;
+                       if (strstr(cptr->u.ttyname, "tty")) {
+                               ptr1 = cptr->u.ttyname;
+                               ptr1 += 3;
+                       }
+                       else {
+                               ptr1 = cptr->u.ttyname;
+                       }
+
+                       for (i = 0; i < dgap_config_get_number_of_ports(brd); i++) {
+                               if (cn == i) {
+                                       p += sprintf(p, "tty%s%02d\n",
+                                               ptr1, i + starto);
+                               }
+                       }
+               }
+
+               if (cptr->type == CNODE) {
+
+                       for (i = 0; i < cptr->u.conc.nport; i++) {
+                               if (cn == (i + ncount)) {
+                                       p += sprintf(p, "tty%s%02d\n", cptr->u.conc.id,
+                                               i + (cptr->u.conc.v_start ? cptr->u.conc.start : 1));
+                               }
+                       }
+
+                       ncount += cptr->u.conc.nport;
+               }
+
+               if (cptr->type == MNODE) {
+
+                       for (i = 0; i < cptr->u.module.nport; i++) {
+                               if (cn == (i + ncount)) {
+                                       p += sprintf(p, "tty%s%02d\n", cptr->u.module.id,
+                                               i + (cptr->u.module.v_start ? cptr->u.module.start : 1));
+                               }
+                       }
+
+                       ncount += cptr->u.module.nport;
+
+               }
+       }
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+/*
+ *  Return mknod information for the board's devices.
+ */                                             
+static int dgap_read_channel_custom_prname(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct channel_t *ch;
+       struct board_t  *brd;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+
+       int     cn;
+       int     bn;
+       struct cnode *cptr = NULL;
+       int found = FALSE;
+       int ncount = 0;
+       int starto = 0;
+       int i = 0;
+
+       DPR_PROC(("dgap_proc_brd_info\n"));
+
+       ch = (struct channel_t *) table->data;
+
+       if (done || !ch || (ch->magic != DGAP_CHANNEL_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       brd = ch->ch_bd;
+
+       if (done || !brd || (brd->magic != DGAP_BOARD_MAGIC)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+        bn = brd->boardnum;
+       cn = ch->ch_portnum;
+
+       /*
+        * For each board, output the device information in
+        * a handy table format...
+        */
+
+       for (cptr = brd->bd_config; cptr; cptr = cptr->next) {
+
+               if ((cptr->type == BNODE) &&
+                   ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
+                    (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
+                    (cptr->u.board.type == PAPORT8))) {
+
+                               found = TRUE;
+                               if (cptr->u.board.v_start)
+                                       starto = cptr->u.board.start;
+                               else
+                                       starto = 1;
+               }
+
+               if (cptr->type == TNODE && found == TRUE) {
+                       char *ptr1;
+                       if (strstr(cptr->u.ttyname, "tty")) {
+                               ptr1 = cptr->u.ttyname;
+                               ptr1 += 3;
+                       }
+                       else {
+                               ptr1 = cptr->u.ttyname;
+                       }
+
+                       for (i = 0; i < dgap_config_get_number_of_ports(brd); i++) {
+                               if (cn == i) {
+                                       p += sprintf(p, "pr%s%02d\n",
+                                               ptr1, i + starto);
+                               }
+                       }
+               }
+
+               if (cptr->type == CNODE) {
+
+                       for (i = 0; i < cptr->u.conc.nport; i++) {
+                               if (cn == (i + ncount)) {
+                                       p += sprintf(p, "pr%s%02d\n", cptr->u.conc.id,
+                                               i + (cptr->u.conc.v_start ? cptr->u.conc.start : 1));
+                               }
+                       }
+
+                       ncount += cptr->u.conc.nport;
+               }
+
+               if (cptr->type == MNODE) {
+
+                       for (i = 0; i < cptr->u.module.nport; i++) {
+                               if (cn == (i + ncount)) {
+                                       p += sprintf(p, "pr%s%02d\n", cptr->u.module.id,
+                                               i + (cptr->u.module.v_start ? cptr->u.module.start : 1));
+                               }
+                       }
+
+                       ncount += cptr->u.module.nport;
+
+               }
+       }
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+
+
+
+static int dgap_open_channel_sniff(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               void *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct channel_t *ch;
+       ulong  lock_flags;
+
+       ch = (struct channel_t *) table->data;
+
+       if (!ch || (ch->magic != DGAP_CHANNEL_MAGIC))
+               return 0;
+
+       ch->ch_sniff_buf = dgap_driver_kzmalloc(SNIFF_MAX, GFP_KERNEL);
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+       ch->ch_sniff_flags |= SNIFF_OPEN;
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       return 0;
+}
+
+static int dgap_close_channel_sniff(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               void *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct channel_t *ch;
+       ulong  lock_flags;
+
+       ch = (struct channel_t *) table->data;
+
+       if (!ch || (ch->magic != DGAP_CHANNEL_MAGIC))
+               return 0;
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+       ch->ch_sniff_flags &= ~(SNIFF_OPEN);
+       kfree(ch->ch_sniff_buf);
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       return 0;
+}
+
+
+/*
+ *    Copy data from the monitoring buffer to the user, freeing space
+ *    in the monitoring buffer for more messages
+ *
+ */
+static int dgap_read_channel_sniff(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct channel_t *ch;
+       int n;
+       int r;
+       int offset = 0;
+       int res = 0;
+       ssize_t rtn = 0;
+       ulong  lock_flags;
+
+       ch = (struct channel_t *) table->data;
+
+       if (!ch || (ch->magic != DGAP_CHANNEL_MAGIC)) {
+               rtn = -ENXIO;
+               goto done;
+       }
+
+       /*
+        *  Wait for some data to appear in the buffer.
+        */
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       for (;;) {
+               n = (ch->ch_sniff_in - ch->ch_sniff_out) & SNIFF_MASK;
+
+               if (n != 0)
+                       break;
+
+               ch->ch_sniff_flags |= SNIFF_WAIT_DATA;
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+               /*
+                * Go to sleep waiting until the condition becomes true.
+                */
+               rtn = wait_event_interruptible(ch->ch_sniff_wait,
+                       ((ch->ch_sniff_flags & SNIFF_WAIT_DATA) == 0));
+
+               if (rtn)
+                       goto done;
+
+               DGAP_LOCK(ch->ch_lock, lock_flags);
+       }
+
+       /*
+        *  Read whatever is there.
+        */
+
+       if (n > *lenp)
+               n = *lenp;
+
+       res = n;
+
+       r = SNIFF_MAX - ch->ch_sniff_out;
+
+       if (r <= n) {
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+               rtn = copy_to_user(buffer, ch->ch_sniff_buf + ch->ch_sniff_out, r);
+               if (rtn) {
+                       rtn = -EFAULT;
+                       goto done;
+               }
+
+               DGAP_LOCK(ch->ch_lock, lock_flags);
+
+               ch->ch_sniff_out = 0;
+               n -= r;
+               offset = r;
+       }
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+       rtn = copy_to_user(buffer + offset, ch->ch_sniff_buf + ch->ch_sniff_out, n);
+       if (rtn) {
+               rtn = -EFAULT;
+               goto done;
+       }
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       ch->ch_sniff_out += n;
+       *ppos += res;
+       rtn = res;
+//     rtn = 0;
+
+       /*
+        *  Wakeup any thread waiting for buffer space.
+        */
+
+       if (ch->ch_sniff_flags & SNIFF_WAIT_SPACE) {
+               ch->ch_sniff_flags &= ~SNIFF_WAIT_SPACE;
+               wake_up_interruptible(&ch->ch_sniff_wait);
+       }
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+done:
+       return rtn;
+}
+
+
+static int dgap_read_channel_fepstate(struct dgap_proc_entry *table, int dir, struct file *filp,
+                               char __user *buffer, ssize_t *lenp, loff_t *ppos)
+{
+       struct channel_t *ch;
+       static int done = 0;
+       static char buf[4096];
+       char *p = buf;
+
+       DPR_PROC(("dgap_proc_info\n"));
+
+       ch = (struct channel_t *) table->data;
+
+       if (done || !ch || (ch->magic != DGAP_CHANNEL_MAGIC) || (ch->ch_bd->state != BOARD_READY)) {
+               done = 0;
+               *lenp = 0;
+               return 0;
+       }
+
+       p += sprintf(p, "Port number: %d\n", ch->ch_portnum);
+       p += sprintf(p, "\n");
+
+       p += sprintf(p, "\tTPJMP:\t%x\n", ch->ch_bs->tp_jmp);
+       p += sprintf(p, "\tTCJMP:\t%x\n", ch->ch_bs->tc_jmp);
+       p += sprintf(p, "\tTPJMP:\t%x\n", ch->ch_bs->ri_jmp);
+       p += sprintf(p, "\tRPJMP:\t%x\n", ch->ch_bs->rp_jmp);
+
+       p += sprintf(p, "\tTSEG:\t%x\n", ch->ch_bs->tx_seg);
+       p += sprintf(p, "\tTIN:\t%x\n", ch->ch_bs->tx_head);
+       p += sprintf(p, "\tTOUT:\t%x\n", ch->ch_bs->tx_tail);
+       p += sprintf(p, "\tTMAX:\t%x\n", ch->ch_bs->tx_max);
+
+       p += sprintf(p, "\tRSEG:\t%x\n", ch->ch_bs->rx_seg);
+       p += sprintf(p, "\tRIN:\t%x\n", ch->ch_bs->rx_head);
+       p += sprintf(p, "\tROUT:\t%x\n", ch->ch_bs->rx_tail);
+       p += sprintf(p, "\tRMAX:\t%x\n", ch->ch_bs->rx_max);
+
+       p += sprintf(p, "\tTLOW:\t%x\n", ch->ch_bs->tx_lw);
+       p += sprintf(p, "\tRLOW:\t%x\n", ch->ch_bs->rx_lw);
+       p += sprintf(p, "\tRHIGH:\t%x\n", ch->ch_bs->rx_hw);
+       p += sprintf(p, "\tINCR:\t%x\n", ch->ch_bs->incr);
+
+       p += sprintf(p, "\tDEV:\t%x\n", ch->ch_bs->fepdev);
+       p += sprintf(p, "\tEDELAY:\t%x\n", ch->ch_bs->edelay);
+       p += sprintf(p, "\tBLEN:\t%x\n", ch->ch_bs->blen);
+       p += sprintf(p, "\tBTIME:\t%x\n", ch->ch_bs->btime);
+
+       p += sprintf(p, "\tIFLAG:\t%x\n", ch->ch_bs->iflag);
+       p += sprintf(p, "\tOFLAG:\t%x\n", ch->ch_bs->oflag);
+       p += sprintf(p, "\tCFLAG:\t%x\n", ch->ch_bs->cflag);
+
+       p += sprintf(p, "\tNUM:\t%x\n", ch->ch_bs->num);
+       p += sprintf(p, "\tRACT:\t%x\n", ch->ch_bs->ract);
+       p += sprintf(p, "\tBSTAT:\t%x\n", ch->ch_bs->bstat);
+       p += sprintf(p, "\tTBUSY:\t%x\n", ch->ch_bs->tbusy);
+       p += sprintf(p, "\tIEMPTY:\t%x\n", ch->ch_bs->iempty);
+       p += sprintf(p, "\tILOW:\t%x\n", ch->ch_bs->ilow);
+       p += sprintf(p, "\tIDATA:\t%x\n", ch->ch_bs->idata);
+       p += sprintf(p, "\tEFLAG:\t%x\n", ch->ch_bs->eflag);
+
+       p += sprintf(p, "\tTFLAG:\t%x\n", ch->ch_bs->tflag);
+       p += sprintf(p, "\tRFLAG:\t%x\n", ch->ch_bs->rflag);
+       p += sprintf(p, "\tXMASK:\t%x\n", ch->ch_bs->xmask);
+       p += sprintf(p, "\tXVAL:\t%x\n", ch->ch_bs->xval);
+       p += sprintf(p, "\tMSTAT:\t%x\n", ch->ch_bs->m_stat);
+       p += sprintf(p, "\tEFMASK:\t%x\n", ch->ch_bs->m_change);
+       p += sprintf(p, "\tMINT:\t%x\n", ch->ch_bs->m_int);
+       p += sprintf(p, "\tLSTAT:\t%x\n", ch->ch_bs->m_last);
+
+       p += sprintf(p, "\tMTRAN:\t%x\n", ch->ch_bs->mtran);
+       p += sprintf(p, "\tORUN:\t%x\n", ch->ch_bs->orun);
+       p += sprintf(p, "\tSTARTCA:%x\n", ch->ch_bs->astartc);
+       p += sprintf(p, "\tSTOPCA:\t%x\n", ch->ch_bs->astopc);
+       p += sprintf(p, "\tSTARTC\t%x\n", ch->ch_bs->startc);
+       p += sprintf(p, "\tSTOPC:\t%x\n", ch->ch_bs->stopc);
+       p += sprintf(p, "\tVNEXT:\t%x\n", ch->ch_bs->vnextc);
+       p += sprintf(p, "\tHFLOW:\t%x\n", ch->ch_bs->hflow);
+       p += sprintf(p, "\tFILLC:\t%x\n", ch->ch_bs->fillc);
+       p += sprintf(p, "\tOCHAR:\t%x\n", ch->ch_bs->ochar);
+       p += sprintf(p, "\tOMASK:\t%x\n", ch->ch_bs->omask);
+
+       if (copy_to_user(buffer, buf, (p - (char *) buf)))
+               return -EFAULT;
+
+       *lenp = p - (char *) buf;
+       *ppos += p - (char *) buf; 
+       done = 1;
+       return 0;
+}
+
+
+/*
+ * Register the basic /proc/dgap files that appear whenever
+ * the driver is loaded.
+ */
+void dgap_proc_register_basic_prescan(void)
+{
+       int i;
+
+       /* Initialize semaphores in each table slot */
+       for (i = 0; i < DGAP_MAX_PROC_ENTRIES; i++) {
+               if (!dgap_table[i].magic) {
+                       break;
+               }
+               init_MUTEX(&(dgap_table[i].excl_sem));
+       }
+
+       /*
+        *      Register /proc/dgap
+        */
+       ProcDGAP = proc_create("dgap", (0700 | S_IFDIR), NULL, &dgap_proc_file_ops);
+       dgap_register_proc_table(dgap_table, ProcDGAP);
+}
+
+
+/*
+ * Register the basic /proc/dgap files that appear whenever
+ * the driver is loaded.
+ */
+void dgap_proc_register_basic_postscan(int board_num)
+{
+       int i;
+       char board[10];
+       sprintf(board, "%d", board_num);
+
+       /* Set proc board entry pointer */
+       dgap_Board[board_num]->proc_entry_pointer = create_proc_entry(board, (0700 | S_IFDIR), ProcDGAP);
+
+       /* Create a new copy of the board_table... */
+       dgap_Board[board_num]->dgap_board_table = dgap_driver_kzmalloc(sizeof(dgap_board_table), 
+               GFP_KERNEL);
+
+       /* Now copy the default table into that memory */
+       memcpy(dgap_Board[board_num]->dgap_board_table, dgap_board_table, sizeof(dgap_board_table));
+
+       /* Initialize semaphores in each table slot */
+       for (i = 0; i < DGAP_MAX_PROC_ENTRIES; i++) {
+               if (!dgap_Board[board_num]->dgap_board_table[i].magic) {
+                       break;
+               }
+
+               init_MUTEX(&(dgap_Board[board_num]->dgap_board_table[i].excl_sem));
+               dgap_Board[board_num]->dgap_board_table[i].data = dgap_Board[board_num];
+
+       }
+
+       /* Register board table into proc */
+       dgap_register_proc_table(dgap_Board[board_num]->dgap_board_table, 
+               dgap_Board[board_num]->proc_entry_pointer);
+}
+
+
+/*
+ * Register the channel /proc/dgap files that appear whenever
+ * the driver is loaded.
+ */
+void dgap_proc_register_channel_postscan(int board_num)
+{
+       int i, j;
+
+       /*
+        * Add new entries for each port.
+        */
+       for (i = 0; i < dgap_Board[board_num]->nasync; i++) {
+
+               char channel[10];
+               sprintf(channel, "%d", i);
+
+               /* Set proc channel entry pointer */
+               dgap_Board[board_num]->channels[i]->proc_entry_pointer =
+                       create_proc_entry(channel, (0700 | S_IFDIR), 
+                       dgap_Board[board_num]->proc_entry_pointer);
+
+               /* Create a new copy of the channel_table... */
+               dgap_Board[board_num]->channels[i]->dgap_channel_table =
+                       dgap_driver_kzmalloc(sizeof(dgap_channel_table), GFP_KERNEL);
+
+               /* Now copy the default table into that memory */
+               memcpy(dgap_Board[board_num]->channels[i]->dgap_channel_table,
+                       dgap_channel_table, sizeof(dgap_channel_table));
+
+               /* Initialize semaphores in each table slot */
+               for (j = 0; j < DGAP_MAX_PROC_ENTRIES; j++) {
+                       if (!dgap_Board[board_num]->channels[i]->dgap_channel_table[j].magic) {
+                               break;
+                       }
+
+                       init_MUTEX(&(dgap_Board[board_num]->channels[i]->dgap_channel_table[j].excl_sem));
+                       dgap_Board[board_num]->channels[i]->dgap_channel_table[j].data = 
+                               dgap_Board[board_num]->channels[i];
+               }
+
+               /* Register channel table into proc */
+               dgap_register_proc_table(dgap_Board[board_num]->channels[i]->dgap_channel_table, 
+                       dgap_Board[board_num]->channels[i]->proc_entry_pointer);
+       }
+}
+
+
+static void dgap_remove_proc_entry(struct proc_dir_entry *pde)
+{ 
+       if (!pde) {
+               DPR_PROC(("dgap_remove_proc_entry... NULL entry... not removing...\n"));
+               return;
+       }
+
+       remove_proc_entry(pde->name, pde->parent);
+}
+
+
+void dgap_proc_unregister_all(void)
+{
+       int i = 0, j = 0;
+
+       /* Walk each board, blowing away their proc entries... */
+       for (i = 0; i < dgap_NumBoards; i++) {
+
+               /* Walk each channel, blowing away their proc entries... */
+               for (j = 0; j < dgap_Board[i]->nasync; j++) {
+
+                       if (dgap_Board[i]->channels[j]->dgap_channel_table) {
+                               dgap_unregister_proc_table(dgap_Board[i]->channels[j]->dgap_channel_table, 
+                                       dgap_Board[i]->channels[j]->proc_entry_pointer);
+                               dgap_remove_proc_entry(dgap_Board[i]->channels[j]->proc_entry_pointer);
+                               kfree(dgap_Board[i]->channels[j]->dgap_channel_table);
+                       }
+               }
+
+               if (dgap_Board[i]->dgap_board_table) {
+                       dgap_unregister_proc_table(dgap_Board[i]->dgap_board_table, 
+                               dgap_Board[i]->proc_entry_pointer);
+                       dgap_remove_proc_entry(dgap_Board[i]->proc_entry_pointer);
+                       kfree(dgap_Board[i]->dgap_board_table);
+               }
+       }
+
+       /* Blow away the top proc entry */
+       dgap_unregister_proc_table(dgap_table, ProcDGAP);
+       dgap_remove_proc_entry(ProcDGAP);
+}
diff --git a/drivers/staging/dgap/dgap_proc.h b/drivers/staging/dgap/dgap_proc.h
new file mode 100644 (file)
index 0000000..9970d28
--- /dev/null
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *      Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *      NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ *
+ *
+ *     $Id: dgap_proc.h,v 1.1 2009/10/23 14:01:57 markh Exp $
+ *
+ *  Description:
+ *
+ *     Describes the private structures used to manipulate the "special"
+ *     proc constructs (not read-only) used by the Digi Neo software.
+ *     The concept is borrowed heavily from the "sysctl" interface of
+ *     the kernel.  I decided not to use the structures and functions
+ *     provided by the kernel for two reasons:
+ *
+ *       1. Due to the planned use of "/proc" in the Neo driver, many
+ *          of the functions of the "sysctl" interface would go unused.
+ *          A simpler interface will be easier to maintain.
+ *
+ *       2. I'd rather divorce our "added package" from the kernel internals.
+ *          If the "sysctl" structures should change, I will be insulated
+ *          from those changes.  These "/proc" entries won't be under the
+ *          "sys" tree anyway, so there is no need to maintain a strict
+ *          dependence relationship.
+ *
+ *  Author:
+ *
+ *     Scott H Kilau
+ *
+ */
+
+#ifndef _DGAP_RW_PROC_H
+#define _DGAP_RW_PROC_H
+
+/*
+ *  The list of DGAP entries with r/w capabilities. 
+ *  These magic numbers are used for identification purposes.
+ */
+enum {
+       DGAP_INFO = 1,                  /* Get info about the running module    */
+       DGAP_MKNOD = 2,                 /* Get info about driver devices        */
+       DGAP_BOARD_INFO = 3,            /* Get info about the specific board    */
+       DGAP_BOARD_VPD = 4,             /* Get info about the board's VPD       */
+       DGAP_BOARD_VPDDATA = 5,             /* Get info about the board's VPD       */
+       DGAP_BOARD_TTYSTATS = 6,        /* Get info about the board's tty stats */
+       DGAP_BOARD_TTYFLAGS = 7,        /* Get info about the board's tty flags */
+       DGAP_BOARD_MKNOD = 8,           /* Get info about board devices         */
+       DGAP_PORT_INFO = 9,             /* Get info about the specific port     */
+       DGAP_PORT_SNIFF = 10,           /* Sniff data in/out of specific port   */
+       DGAP_PORT_CUSTOM_TTYNAME = 11,  /* Get info about UDEV tty name         */
+       DGAP_PORT_CUSTOM_PRNAME = 12,   /* Get info about UDEV pr name          */
+       DGAP_PORT_FEPSTATE = 13,        /* Get info about Ports FEP state       */
+};
+
+#define DGAP_MAX_PROC_ENTRIES 999
+
+/*
+ *  Directions for proc handlers
+ */
+enum {
+        INBOUND = 1,           /* Data being written to kernel */
+        OUTBOUND = 2,          /* Data being read from the kernel */
+};
+
+/*
+ *  Each entry in a DGAP proc directory is described with a
+ *  "dgap_proc_entry" structure.  A collection of these
+ *  entries (in an array) represents the members associated
+ *  with a particular "/proc" directory, and is referred to
+ *  as a table.  All "tables" are terminated by an entry with
+ *  zeros for every member.
+ *
+ *  The structure members are as follows:
+ *
+ *    int magic              -- ID number associated with this particular
+ *                              entry.  Should be unique across all of
+ *                              DGAP.
+ *
+ *    const char *name       -- ASCII name associated with the /proc entry.
+ *
+ *    mode_t mode            -- File access permisssions for the /proc entry.
+ *
+ *    dgap_proc_entry *child -- When set, this entry refers to a directory,
+ *                              and points to the table which describes the
+ *                              entries in the subdirectory
+ *
+ *    dgap_proc_handler *open_handler -- When set, points to the fxn which
+ *                                       does any "extra" open stuff.
+ *
+ *    dgap_proc_handler *close_handler -- When set, points to the fxn which
+ *                                        does any "extra" close stuff.
+ *
+ *    dgap_proc_handler *read_handler -- When set, points to the fxn which
+ *                                       handle outbound data flow
+ *
+ *    dgap_proc_handler *write_handler -- When set, points to the fxn which
+ *                                        handles inbound data flow
+ *
+ *    struct proc_dir_entry *de -- Pointer to the directory entry for this
+ *                                 object once registered.  Used to grab
+ *                                 the handle of the object for
+ *                                 unregistration
+ *
+ *    void *data;                 When set, points to the parent structure
+ *
+ */
+
+struct dgap_proc_entry {
+       int             magic;          /* Integer identifier   */
+       const char      *name;          /* ASCII identifier     */
+       mode_t          mode;           /* File access permissions */
+       struct dgap_proc_entry *child;  /* Child pointer        */
+
+       int (*open_handler) (struct dgap_proc_entry *table, int dir, struct file *filp,   
+               void *buffer, ssize_t *lenp, loff_t *ppos); 
+       int (*close_handler) (struct dgap_proc_entry *table, int dir, struct file *filp,   
+               void *buffer, ssize_t *lenp, loff_t *ppos); 
+       int (*read_handler) (struct dgap_proc_entry *table, int dir, struct file *filp,   
+               char __user *buffer, ssize_t *lenp, loff_t *ppos); 
+       int (*write_handler) (struct dgap_proc_entry *table, int dir, struct file *filp,   
+               const char __user *buffer, ssize_t *lenp, loff_t *ppos); 
+
+       struct proc_dir_entry *de;      /* proc entry pointer   */
+       struct semaphore excl_sem;      /* Protects exclusive access var        */
+       int             excl_cnt;       /* Counts number of curr accesses       */
+       void            *data;          /* Allows storing a pointer to parent   */
+};
+
+
+void dgap_proc_register_basic_prescan(void);
+void dgap_proc_unregister_all(void);
+void dgap_proc_register_basic_postscan(int board_num);
+void dgap_proc_register_channel_postscan(int board_num);
+
+#endif /* _DGAP_RW_PROC_H */
diff --git a/drivers/staging/dgap/dgap_sysfs.c b/drivers/staging/dgap/dgap_sysfs.c
new file mode 100644 (file)
index 0000000..6f98ac6
--- /dev/null
@@ -0,0 +1,796 @@
+/*
+ * Copyright 2004 Digi International (www.digi.com)
+ *      Scott H Kilau <Scott_Kilau at digi dot com>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * 
+ *      NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE!
+ *
+ *      This is shared code between Digi's CVS archive and the
+ *      Linux Kernel sources.
+ *      Changing the source just for reformatting needlessly breaks
+ *      our CVS diff history.
+ *
+ *      Send any bug fixes/changes to:  Eng.Linux at digi dot com.
+ *      Thank you.
+ *
+ *
+ * 
+ * $Id: dgap_sysfs.c,v 1.1 2009/10/23 14:01:57 markh Exp $   
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/serial_reg.h>
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+  
+#include "dgap_driver.h"
+#include "dgap_proc.h"
+#include "dgap_mgmt.h"
+#include "dgap_conf.h"
+#include "dgap_parse.h"
+
+
+static ssize_t dgap_driver_version_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
+}
+static DRIVER_ATTR(version, S_IRUSR, dgap_driver_version_show, NULL);
+
+
+static ssize_t dgap_driver_boards_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%d\n", dgap_NumBoards);
+}
+static DRIVER_ATTR(boards, S_IRUSR, dgap_driver_boards_show, NULL);
+
+
+static ssize_t dgap_driver_maxboards_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
+}
+static DRIVER_ATTR(maxboards, S_IRUSR, dgap_driver_maxboards_show, NULL);
+
+
+static ssize_t dgap_driver_pollcounter_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%ld\n", dgap_poll_counter);
+}
+static DRIVER_ATTR(pollcounter, S_IRUSR, dgap_driver_pollcounter_show, NULL);
+
+
+static ssize_t dgap_driver_state_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%s\n", dgap_driver_state_text[dgap_driver_state]);
+}
+static DRIVER_ATTR(state, S_IRUSR, dgap_driver_state_show, NULL);
+
+
+static ssize_t dgap_driver_debug_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "0x%x\n", dgap_debug);
+}
+
+static ssize_t dgap_driver_debug_store(struct device_driver *ddp, const char *buf, size_t count)
+{
+       sscanf(buf, "0x%x\n", &dgap_debug);
+       return count;
+}
+static DRIVER_ATTR(debug, (S_IRUSR | S_IWUSR), dgap_driver_debug_show, dgap_driver_debug_store);
+
+
+static ssize_t dgap_driver_rawreadok_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "0x%x\n", dgap_rawreadok);
+}
+
+static ssize_t dgap_driver_rawreadok_store(struct device_driver *ddp, const char *buf, size_t count)
+{
+       sscanf(buf, "0x%x\n", &dgap_rawreadok);
+       return count;
+}
+static DRIVER_ATTR(rawreadok, (S_IRUSR | S_IWUSR), dgap_driver_rawreadok_show, dgap_driver_rawreadok_store);
+
+
+static ssize_t dgap_driver_pollrate_show(struct device_driver *ddp, char *buf)
+{
+       return snprintf(buf, PAGE_SIZE, "%dms\n", dgap_poll_tick);
+}
+
+static ssize_t dgap_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count)
+{
+       sscanf(buf, "%d\n", &dgap_poll_tick);
+       return count;
+}
+static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgap_driver_pollrate_show, dgap_driver_pollrate_store);
+
+
+void dgap_create_driver_sysfiles(struct pci_driver *dgap_driver)
+{
+       int rc = 0;
+       struct device_driver *driverfs = &dgap_driver->driver;
+
+       rc |= driver_create_file(driverfs, &driver_attr_version);
+       rc |= driver_create_file(driverfs, &driver_attr_boards);
+       rc |= driver_create_file(driverfs, &driver_attr_maxboards);
+       rc |= driver_create_file(driverfs, &driver_attr_debug);
+       rc |= driver_create_file(driverfs, &driver_attr_rawreadok); 
+       rc |= driver_create_file(driverfs, &driver_attr_pollrate);
+       rc |= driver_create_file(driverfs, &driver_attr_pollcounter);
+       rc |= driver_create_file(driverfs, &driver_attr_state);
+       if (rc) {
+               printk(KERN_ERR "DGAP: sysfs driver_create_file failed!\n");
+       }
+}
+
+
+void dgap_remove_driver_sysfiles(struct pci_driver *dgap_driver)
+{
+       struct device_driver *driverfs = &dgap_driver->driver;
+       driver_remove_file(driverfs, &driver_attr_version);
+       driver_remove_file(driverfs, &driver_attr_boards);
+       driver_remove_file(driverfs, &driver_attr_maxboards);
+       driver_remove_file(driverfs, &driver_attr_debug);
+       driver_remove_file(driverfs, &driver_attr_rawreadok);
+       driver_remove_file(driverfs, &driver_attr_pollrate);
+       driver_remove_file(driverfs, &driver_attr_pollcounter);
+       driver_remove_file(driverfs, &driver_attr_state);
+}
+
+
+#define DGAP_VERIFY_BOARD(p, bd)                       \
+       if (!p)                                         \
+               return (0);                             \
+                                                       \
+       bd = dev_get_drvdata(p);                        \
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)       \
+               return (0);                             \
+       if (bd->state != BOARD_READY)                   \
+               return (0);                             \
+
+
+static ssize_t dgap_ports_state_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count,
+                       "%d %s\n", bd->channels[i]->ch_portnum,
+                       bd->channels[i]->ch_open_count ? "Open" : "Closed");
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_state, S_IRUSR, dgap_ports_state_show, NULL);
+
+
+static ssize_t dgap_ports_baud_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count +=  snprintf(buf + count, PAGE_SIZE - count,
+                       "%d %d\n", bd->channels[i]->ch_portnum, bd->channels[i]->ch_baud_info);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_baud, S_IRUSR, dgap_ports_baud_show, NULL);
+
+
+static ssize_t dgap_ports_msignals_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               if (bd->channels[i]->ch_open_count) {
+                       count += snprintf(buf + count, PAGE_SIZE - count,
+                               "%d %s %s %s %s %s %s\n", bd->channels[i]->ch_portnum,
+                               (bd->channels[i]->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
+                               (bd->channels[i]->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
+                               (bd->channels[i]->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
+                               (bd->channels[i]->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
+                               (bd->channels[i]->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
+                               (bd->channels[i]->ch_mistat & UART_MSR_RI)  ? "RI"  : "");
+               } else {
+                       count += snprintf(buf + count, PAGE_SIZE - count,
+                               "%d\n", bd->channels[i]->ch_portnum);
+               }
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_msignals, S_IRUSR, dgap_ports_msignals_show, NULL);
+
+
+static ssize_t dgap_ports_iflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+                       bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_iflag);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_iflag, S_IRUSR, dgap_ports_iflag_show, NULL);
+
+
+static ssize_t dgap_ports_cflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+                       bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_cflag);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_cflag, S_IRUSR, dgap_ports_cflag_show, NULL);
+
+
+static ssize_t dgap_ports_oflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+                       bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_oflag);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_oflag, S_IRUSR, dgap_ports_oflag_show, NULL);
+
+
+static ssize_t dgap_ports_lflag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+                       bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_lflag);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_lflag, S_IRUSR, dgap_ports_lflag_show, NULL);
+
+
+static ssize_t dgap_ports_digi_flag_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
+                       bd->channels[i]->ch_portnum, bd->channels[i]->ch_digi.digi_flags);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgap_ports_digi_flag_show, NULL);
+
+
+static ssize_t dgap_ports_rxcount_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
+                       bd->channels[i]->ch_portnum, bd->channels[i]->ch_rxcount);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgap_ports_rxcount_show, NULL);
+
+
+static ssize_t dgap_ports_txcount_show(struct device *p, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       int count = 0;
+       int i = 0;
+
+       DGAP_VERIFY_BOARD(p, bd);
+
+       for (i = 0; i < bd->nasync; i++) {
+               count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
+                       bd->channels[i]->ch_portnum, bd->channels[i]->ch_txcount);
+       }
+       return count;
+}
+static DEVICE_ATTR(ports_txcount, S_IRUSR, dgap_ports_txcount_show, NULL);
+
+
+/* this function creates the sys files that will export each signal status
+ * to sysfs each value will be put in a separate filename
+ */
+void dgap_create_ports_sysfiles(struct board_t *bd)
+{
+       int rc = 0;
+
+       dev_set_drvdata(&bd->pdev->dev, bd);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
+       rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
+       if (rc) {
+               printk(KERN_ERR "DGAP: sysfs device_create_file failed!\n");
+       }
+}
+
+
+/* removes all the sys files created for that port */
+void dgap_remove_ports_sysfiles(struct board_t *bd)
+{
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
+       device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
+}
+
+
+static ssize_t dgap_tty_state_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? "Open" : "Closed");
+}
+static DEVICE_ATTR(state, S_IRUSR, dgap_tty_state_show, NULL);
+
+
+static ssize_t dgap_tty_baud_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_baud_info);
+}
+static DEVICE_ATTR(baud, S_IRUSR, dgap_tty_baud_show, NULL);
+
+
+static ssize_t dgap_tty_msignals_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       if (ch->ch_open_count) {
+               return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
+                       (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
+                       (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
+                       (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
+                       (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
+                       (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
+                       (ch->ch_mistat & UART_MSR_RI)  ? "RI"  : "");
+       }
+       return 0;
+}
+static DEVICE_ATTR(msignals, S_IRUSR, dgap_tty_msignals_show, NULL);
+
+
+static ssize_t dgap_tty_iflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
+}
+static DEVICE_ATTR(iflag, S_IRUSR, dgap_tty_iflag_show, NULL);
+
+
+static ssize_t dgap_tty_cflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
+}
+static DEVICE_ATTR(cflag, S_IRUSR, dgap_tty_cflag_show, NULL);
+
+
+static ssize_t dgap_tty_oflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
+}
+static DEVICE_ATTR(oflag, S_IRUSR, dgap_tty_oflag_show, NULL);
+
+
+static ssize_t dgap_tty_lflag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
+}
+static DEVICE_ATTR(lflag, S_IRUSR, dgap_tty_lflag_show, NULL);
+
+
+static ssize_t dgap_tty_digi_flag_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
+}
+static DEVICE_ATTR(digi_flag, S_IRUSR, dgap_tty_digi_flag_show, NULL);
+
+
+static ssize_t dgap_tty_rxcount_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
+}
+static DEVICE_ATTR(rxcount, S_IRUSR, dgap_tty_rxcount_show, NULL);
+
+
+static ssize_t dgap_tty_txcount_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+       return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
+}
+static DEVICE_ATTR(txcount, S_IRUSR, dgap_tty_txcount_show, NULL);
+
+
+static ssize_t dgap_tty_name_show(struct device *d, struct device_attribute *attr, char *buf)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       int     cn;
+       int     bn;
+       struct cnode *cptr = NULL;
+       int found = FALSE;
+       int ncount = 0;
+       int starto = 0;
+       int i = 0;
+
+       if (!d)
+               return (0);
+       un = (struct un_t *) dev_get_drvdata(d);
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+       if (bd->state != BOARD_READY)
+               return (0);
+
+        bn = bd->boardnum;
+       cn = ch->ch_portnum;
+
+       for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
+
+               if ((cptr->type == BNODE) &&
+                   ((cptr->u.board.type == APORT2_920P) || (cptr->u.board.type == APORT4_920P) ||
+                    (cptr->u.board.type == APORT8_920P) || (cptr->u.board.type == PAPORT4) ||
+                    (cptr->u.board.type == PAPORT8))) {
+
+                               found = TRUE;
+                               if (cptr->u.board.v_start)
+                                       starto = cptr->u.board.start;
+                               else
+                                       starto = 1;
+               }
+
+               if (cptr->type == TNODE && found == TRUE) {
+                       char *ptr1;
+                       if (strstr(cptr->u.ttyname, "tty")) {
+                               ptr1 = cptr->u.ttyname;
+                               ptr1 += 3;
+                       }
+                       else {
+                               ptr1 = cptr->u.ttyname;
+                       }
+
+                       for (i = 0; i < dgap_config_get_number_of_ports(bd); i++) {
+                               if (cn == i) {
+                                       return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
+                                               (un->un_type == DGAP_PRINT) ? "pr" : "tty",
+                                               ptr1, i + starto);
+                               }
+                       }
+               }
+
+               if (cptr->type == CNODE) {
+
+                       for (i = 0; i < cptr->u.conc.nport; i++) {
+                               if (cn == (i + ncount)) {
+
+                                       return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
+                                               (un->un_type == DGAP_PRINT) ? "pr" : "tty",
+                                               cptr->u.conc.id,
+                                               i + (cptr->u.conc.v_start ? cptr->u.conc.start : 1));
+                               }
+                       }
+
+                       ncount += cptr->u.conc.nport;
+               }
+
+               if (cptr->type == MNODE) {
+
+                       for (i = 0; i < cptr->u.module.nport; i++) {
+                               if (cn == (i + ncount)) {
+                                       return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
+                                               (un->un_type == DGAP_PRINT) ? "pr" : "tty",
+                                               cptr->u.module.id,
+                                               i + (cptr->u.module.v_start ? cptr->u.module.start : 1));
+                               }
+                       }
+
+                       ncount += cptr->u.module.nport;
+
+               }
+       }
+
+       return snprintf(buf, PAGE_SIZE, "%s_dgap_%d_%d\n",
+               (un->un_type == DGAP_PRINT) ? "pr" : "tty", bn, cn);
+
+}
+static DEVICE_ATTR(custom_name, S_IRUSR, dgap_tty_name_show, NULL);
+
+
+static struct attribute *dgap_sysfs_tty_entries[] = {
+       &dev_attr_state.attr,
+       &dev_attr_baud.attr,
+       &dev_attr_msignals.attr,
+       &dev_attr_iflag.attr,
+       &dev_attr_cflag.attr,
+       &dev_attr_oflag.attr,
+       &dev_attr_lflag.attr,
+       &dev_attr_digi_flag.attr,
+       &dev_attr_rxcount.attr,
+       &dev_attr_txcount.attr,
+       &dev_attr_custom_name.attr,
+       NULL
+};
+
+
+static struct attribute_group dgap_tty_attribute_group = {
+       .name = NULL,
+       .attrs = dgap_sysfs_tty_entries,
+};
+
+
+
+
+void dgap_create_tty_sysfs(struct un_t *un, struct device *c)
+{
+       int ret;
+
+       ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group);
+       if (ret) {
+               printk(KERN_ERR "dgap: failed to create sysfs tty device attributes.\n");
+               sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
+               return;
+       }
+
+       dev_set_drvdata(c, un);
+
+}
+
+
+void dgap_remove_tty_sysfs(struct device *c)
+{
+       sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
+}
diff --git a/drivers/staging/dgap/dgap_sysfs.h b/drivers/staging/dgap/dgap_sysfs.h
new file mode 100644 (file)
index 0000000..dde690e
--- /dev/null
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+#ifndef __DGAP_SYSFS_H
+#define __DGAP_SYSFS_H
+
+#include "dgap_driver.h"
+
+#include <linux/device.h>
+
+struct board_t;
+struct channel_t;
+struct un_t;
+struct pci_driver;
+struct class_device;
+
+extern void dgap_create_ports_sysfiles(struct board_t *bd); 
+extern void dgap_remove_ports_sysfiles(struct board_t *bd);
+
+extern void dgap_create_driver_sysfiles(struct pci_driver *);
+extern void dgap_remove_driver_sysfiles(struct pci_driver *);
+
+extern int dgap_tty_class_init(void);
+extern int dgap_tty_class_destroy(void);
+
+extern void dgap_create_tty_sysfs(struct un_t *un, struct device *c);
+extern void dgap_remove_tty_sysfs(struct device *c);
+
+
+#endif
diff --git a/drivers/staging/dgap/dgap_trace.c b/drivers/staging/dgap/dgap_trace.c
new file mode 100644 (file)
index 0000000..1761002
--- /dev/null
@@ -0,0 +1,186 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *     NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE! 
+ *
+ *     This is shared code between Digi's CVS archive and the
+ *     Linux Kernel sources.
+ *     Changing the source just for reformatting needlessly breaks
+ *     our CVS diff history.
+ *
+ *     Send any bug fixes/changes to:  Eng.Linux at digi dot com. 
+ *     Thank you. 
+ *
+ */
+
+/* $Id: dgap_trace.c,v 1.1 2009/10/23 14:01:57 markh Exp $ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/sched.h>       /* For jiffies, task states */
+#include <linux/interrupt.h>   /* For tasklet and interrupt structs/defines */
+#include <linux/vmalloc.h>
+
+#include "dgap_driver.h"
+
+#define TRC_TO_CONSOLE 1
+
+/* file level globals */
+static char *dgap_trcbuf;              /* the ringbuffer */
+
+#if defined(TRC_TO_KMEM)
+static int dgap_trcbufi = 0;           /* index of the tilde at the end of */
+#endif
+
+extern int dgap_trcbuf_size;           /* size of the ringbuffer */
+
+#if defined(TRC_TO_KMEM)
+static DEFINE_SPINLOCK(dgap_tracef_lock);
+#endif
+
+#if 0
+
+#if !defined(TRC_TO_KMEM) && !defined(TRC_TO_CONSOLE)
+void dgap_tracef(const char *fmt, ...)
+{
+       return;
+}
+
+#else /* !defined(TRC_TO_KMEM) && !defined(TRC_TO_CONSOLE) */
+
+void dgap_tracef(const char *fmt, ...)
+{
+       va_list          ap;
+       char             buf[TRC_MAXMSG+1];
+       size_t           lenbuf;
+       int              i;
+       static int       failed = FALSE;
+# if defined(TRC_TO_KMEM)
+       unsigned long    flags;
+#endif
+
+       if(failed)
+               return;
+# if defined(TRC_TO_KMEM)
+       DGAP_LOCK(dgap_tracef_lock, flags);
+#endif
+
+       /* Format buf using fmt and arguments contained in ap. */
+       va_start(ap, fmt);
+       i = vsprintf(buf, fmt,  ap);
+       va_end(ap);
+       lenbuf = strlen(buf);
+
+# if defined(TRC_TO_KMEM)
+       {
+               static int       initd=0;
+
+               /*
+                * Now, in addition to (or instead of) printing this stuff out
+                * (which is a buffered operation), also tuck it away into a
+                * corner of memory which can be examined post-crash in kdb.
+                */
+               if (!initd) {
+                       dgap_trcbuf = (char *) vmalloc(dgap_trcbuf_size);
+                       if(!dgap_trcbuf) {
+                               failed = TRUE;
+                               printk("dgap: tracing init failed!\n");
+                               return;
+                       }
+
+                       memset(dgap_trcbuf, '\0',  dgap_trcbuf_size);
+                       dgap_trcbufi = 0;
+                       initd++;
+
+                       printk("dgap: tracing enabled - " TRC_DTRC 
+                               " 0x%lx 0x%x\n",
+                               (unsigned long)dgap_trcbuf, 
+                               dgap_trcbuf_size);
+               }
+
+#  if defined(TRC_ON_OVERFLOW_WRAP_AROUND)
+               /*
+                * This is the less CPU-intensive way to do things.  We simply
+                * wrap around before we fall off the end of the buffer.  A 
+                * tilde (~) demarcates the current end of the trace.
+                *
+                * This method should be used if you are concerned about race
+                * conditions as it is less likely to affect the timing of
+                * things.
+                */
+
+               if (dgap_trcbufi + lenbuf >= dgap_trcbuf_size) {
+                       /* We are wrapping, so wipe out the last tilde. */
+                       dgap_trcbuf[dgap_trcbufi] = '\0';
+                       /* put the new string at the beginning of the buffer */
+                       dgap_trcbufi = 0;
+               }
+
+               strcpy(&dgap_trcbuf[dgap_trcbufi], buf);        
+               dgap_trcbufi += lenbuf;
+               dgap_trcbuf[dgap_trcbufi] = '~';
+
+#  elif defined(TRC_ON_OVERFLOW_SHIFT_BUFFER)
+               /*
+                * This is the more CPU-intensive way to do things.  If we
+                * venture into the last 1/8 of the buffer, we shift the 
+                * last 7/8 of the buffer forward, wiping out the first 1/8.
+                * Advantage: No wrap-around, only truncation from the
+                * beginning.
+                *
+                * This method should not be used if you are concerned about
+                * timing changes affecting the behaviour of the driver (ie,
+                * race conditions).
+                */
+               strcpy(&dgap_trcbuf[dgap_trcbufi], buf);
+               dgap_trcbufi += lenbuf;
+               dgap_trcbuf[dgap_trcbufi] = '~';
+               dgap_trcbuf[dgap_trcbufi+1] = '\0';
+
+               /* If we're near the end of the trace buffer... */
+               if (dgap_trcbufi > (dgap_trcbuf_size/8)*7) {
+                       /* Wipe out the first eighth to make some more room. */
+                       strcpy(dgap_trcbuf, &dgap_trcbuf[dgap_trcbuf_size/8]);
+                       dgap_trcbufi = strlen(dgap_trcbuf)-1;
+                       /* Plop overflow message at the top of the buffer. */
+                       bcopy(TRC_OVERFLOW, dgap_trcbuf, strlen(TRC_OVERFLOW));
+               }
+#  else
+#   error "TRC_ON_OVERFLOW_WRAP_AROUND or TRC_ON_OVERFLOW_SHIFT_BUFFER?"
+#  endif
+       }
+       DGAP_UNLOCK(dgap_tracef_lock, flags);
+
+# endif /* defined(TRC_TO_KMEM) */
+}
+
+#endif /* !defined(TRC_TO_KMEM) && !defined(TRC_TO_CONSOLE) */
+
+#endif
+
+/*
+ * dgap_tracer_free()
+ *
+ *
+ */
+void dgap_tracer_free(void)
+{
+       if(dgap_trcbuf)
+               vfree(dgap_trcbuf);
+}
diff --git a/drivers/staging/dgap/dgap_trace.h b/drivers/staging/dgap/dgap_trace.h
new file mode 100644 (file)
index 0000000..b21f461
--- /dev/null
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ *
+ *****************************************************************************
+ * Header file for dgap_trace.c
+ *
+ * $Id: dgap_trace.h,v 1.1 2009/10/23 14:01:57 markh Exp $
+ */
+
+#ifndef __DGAP_TRACE_H
+#define __DGAP_TRACE_H
+
+#include "dgap_driver.h"
+
+void dgap_tracef(const char *fmt, ...);
+void dgap_tracer_free(void);
+
+#endif
+
diff --git a/drivers/staging/dgap/dgap_tty.c b/drivers/staging/dgap/dgap_tty.c
new file mode 100644 (file)
index 0000000..e7aea5e
--- /dev/null
@@ -0,0 +1,3651 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *     NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE! 
+ *
+ *     This is shared code between Digi's CVS archive and the
+ *     Linux Kernel sources.
+ *     Changing the source just for reformatting needlessly breaks
+ *     our CVS diff history.
+ *
+ *     Send any bug fixes/changes to:  Eng.Linux at digi dot com. 
+ *     Thank you. 
+ */
+
+/************************************************************************
+ * 
+ * This file implements the tty driver functionality for the
+ * FEP5 based product lines.
+ * 
+ ************************************************************************
+ *
+ * $Id: dgap_tty.c,v 1.3 2011/06/23 12:11:31 markh Exp $
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/sched.h>       /* For jiffies, task states */
+#include <linux/interrupt.h>   /* For tasklet and interrupt structs/defines */
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_reg.h>
+#include <linux/slab.h>
+#include <linux/delay.h>       /* For udelay */
+#include <asm/uaccess.h>       /* For copy_from_user/copy_to_user */
+#include <asm/io.h>            /* For read[bwl]/write[bwl] */
+#include <linux/pci.h>
+
+#include "dgap_driver.h"
+#include "dgap_tty.h"
+#include "dgap_types.h"
+#include "dgap_fep5.h"
+#include "dgap_parse.h"
+#include "dgap_conf.h"
+#include "dgap_sysfs.h"
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)
+#define init_MUTEX(sem)         sema_init(sem, 1)
+#define DECLARE_MUTEX(name)     \
+        struct semaphore name = __SEMAPHORE_INITIALIZER(name, 1)
+#endif
+
+/*
+ * internal variables
+ */
+static struct board_t  *dgap_BoardsByMajor[256];
+static uchar           *dgap_TmpWriteBuf = NULL;
+static DECLARE_MUTEX(dgap_TmpWriteSem);
+
+/*
+ * Default transparent print information.
+ */
+static struct digi_t dgap_digi_init = {
+       .digi_flags =   DIGI_COOK,      /* Flags                        */
+       .digi_maxcps =  100,            /* Max CPS                      */
+       .digi_maxchar = 50,             /* Max chars in print queue     */
+       .digi_bufsize = 100,            /* Printer buffer size          */
+       .digi_onlen =   4,              /* size of printer on string    */
+       .digi_offlen =  4,              /* size of printer off string   */
+       .digi_onstr =   "\033[5i",      /* ANSI printer on string ]     */
+       .digi_offstr =  "\033[4i",      /* ANSI printer off string ]    */
+       .digi_term =    "ansi"          /* default terminal type        */
+};
+
+
+/*
+ * Define a local default termios struct. All ports will be created
+ * with this termios initially.
+ *
+ * This defines a raw port at 9600 baud, 8 data bits, no parity,
+ * 1 stop bit.
+ */
+
+static struct ktermios DgapDefaultTermios =
+{
+       .c_iflag =      (DEFAULT_IFLAGS),       /* iflags */
+       .c_oflag =      (DEFAULT_OFLAGS),       /* oflags */
+       .c_cflag =      (DEFAULT_CFLAGS),       /* cflags */
+       .c_lflag =      (DEFAULT_LFLAGS),       /* lflags */
+       .c_cc =         INIT_C_CC,
+       .c_line =       0,
+};
+
+/* Our function prototypes */
+static int dgap_tty_open(struct tty_struct *tty, struct file *file);
+static void dgap_tty_close(struct tty_struct *tty, struct file *file);
+static int dgap_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch);
+static int dgap_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg);
+static int dgap_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo);
+static int dgap_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info);
+static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo);
+static int dgap_tty_digisetedelay(struct tty_struct *tty, int __user *new_info);
+static int dgap_tty_write_room(struct tty_struct* tty);
+static int dgap_tty_chars_in_buffer(struct tty_struct* tty);
+static void dgap_tty_start(struct tty_struct *tty);
+static void dgap_tty_stop(struct tty_struct *tty);
+static void dgap_tty_throttle(struct tty_struct *tty);
+static void dgap_tty_unthrottle(struct tty_struct *tty);
+static void dgap_tty_flush_chars(struct tty_struct *tty);
+static void dgap_tty_flush_buffer(struct tty_struct *tty);
+static void dgap_tty_hangup(struct tty_struct *tty);
+static int dgap_wait_for_drain(struct tty_struct *tty);
+static int dgap_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value);
+static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value);
+static int dgap_tty_digisetcustombaud(struct tty_struct *tty, int __user *new_info);
+static int dgap_tty_digigetcustombaud(struct tty_struct *tty, int __user *retinfo);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
+static int dgap_tty_tiocmget(struct tty_struct *tty);
+static int dgap_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear);
+#else
+static int dgap_tty_tiocmget(struct tty_struct *tty, struct file *file);
+static int dgap_tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear);
+#endif
+static int dgap_tty_send_break(struct tty_struct *tty, int msec);
+static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout);
+static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf, int count);
+static void dgap_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios);
+static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c);
+static void dgap_tty_send_xchar(struct tty_struct *tty, char ch);
+
+static const struct tty_operations dgap_tty_ops = {
+       .open = dgap_tty_open,
+       .close = dgap_tty_close,
+       .write = dgap_tty_write,
+       .write_room = dgap_tty_write_room,
+       .flush_buffer = dgap_tty_flush_buffer,
+       .chars_in_buffer = dgap_tty_chars_in_buffer,
+       .flush_chars = dgap_tty_flush_chars,
+       .ioctl = dgap_tty_ioctl,
+       .set_termios = dgap_tty_set_termios,
+       .stop = dgap_tty_stop, 
+       .start = dgap_tty_start,
+       .throttle = dgap_tty_throttle,
+       .unthrottle = dgap_tty_unthrottle,
+       .hangup = dgap_tty_hangup,
+       .put_char = dgap_tty_put_char,
+       .tiocmget = dgap_tty_tiocmget,
+       .tiocmset = dgap_tty_tiocmset,
+       .break_ctl = dgap_tty_send_break,
+       .wait_until_sent = dgap_tty_wait_until_sent,
+       .send_xchar = dgap_tty_send_xchar
+};
+
+
+
+
+
+/************************************************************************
+ *                      
+ * TTY Initialization/Cleanup Functions
+ *      
+ ************************************************************************/
+         
+/*
+ * dgap_tty_preinit()
+ *
+ * Initialize any global tty related data before we download any boards.
+ */
+int dgap_tty_preinit(void)
+{
+       unsigned long flags;
+
+       DGAP_LOCK(dgap_global_lock, flags);  
+
+       /*
+        * Allocate a buffer for doing the copy from user space to
+        * kernel space in dgap_input().  We only use one buffer and
+        * control access to it with a semaphore.  If we are paging, we
+        * are already in trouble so one buffer won't hurt much anyway.
+        */
+       dgap_TmpWriteBuf = kmalloc(WRITEBUFLEN, GFP_ATOMIC);
+
+       if (!dgap_TmpWriteBuf) {
+               DGAP_UNLOCK(dgap_global_lock, flags);
+               DPR_INIT(("unable to allocate tmp write buf"));
+               return (-ENOMEM);
+       }
+         
+        DGAP_UNLOCK(dgap_global_lock, flags);
+        return(0);
+}
+
+
+/*
+ * dgap_tty_register()
+ *
+ * Init the tty subsystem for this board.
+ */
+int dgap_tty_register(struct board_t *brd)
+{
+       int rc = 0;
+
+       DPR_INIT(("tty_register start"));
+
+       brd->SerialDriver = alloc_tty_driver(MAXPORTS);
+
+       snprintf(brd->SerialName, MAXTTYNAMELEN, "tty_dgap_%d_", brd->boardnum);
+       brd->SerialDriver->name = brd->SerialName;
+       brd->SerialDriver->name_base = 0;
+       brd->SerialDriver->major = 0;
+       brd->SerialDriver->minor_start = 0;
+       brd->SerialDriver->type = TTY_DRIVER_TYPE_SERIAL; 
+       brd->SerialDriver->subtype = SERIAL_TYPE_NORMAL;   
+       brd->SerialDriver->init_termios = DgapDefaultTermios;
+       brd->SerialDriver->driver_name = DRVSTR;
+       brd->SerialDriver->flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
+
+       /* The kernel wants space to store pointers to tty_structs */
+       brd->SerialDriver->ttys = dgap_driver_kzmalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
+       if (!brd->SerialDriver->ttys)
+               return(-ENOMEM);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+       brd->SerialDriver->refcount = brd->TtyRefCnt;
+#endif
+
+       /*
+        * Entry points for driver.  Called by the kernel from
+        * tty_io.c and n_tty.c.
+        */
+       tty_set_operations(brd->SerialDriver, &dgap_tty_ops);
+
+       /*
+        * If we're doing transparent print, we have to do all of the above
+        * again, seperately so we don't get the LD confused about what major
+        * we are when we get into the dgap_tty_open() routine.
+        */
+       brd->PrintDriver = alloc_tty_driver(MAXPORTS);
+
+       snprintf(brd->PrintName, MAXTTYNAMELEN, "pr_dgap_%d_", brd->boardnum);
+       brd->PrintDriver->name = brd->PrintName;
+       brd->PrintDriver->name_base = 0;
+       brd->PrintDriver->major = 0;
+       brd->PrintDriver->minor_start = 0;
+       brd->PrintDriver->type = TTY_DRIVER_TYPE_SERIAL;   
+       brd->PrintDriver->subtype = SERIAL_TYPE_NORMAL;
+       brd->PrintDriver->init_termios = DgapDefaultTermios;
+       brd->PrintDriver->driver_name = DRVSTR;
+       brd->PrintDriver->flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
+
+       /* The kernel wants space to store pointers to tty_structs */
+       brd->PrintDriver->ttys = dgap_driver_kzmalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
+       if (!brd->PrintDriver->ttys)
+               return(-ENOMEM);
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28)
+       brd->PrintDriver->refcount = brd->TtyRefCnt;
+#endif
+
+       /*
+        * Entry points for driver.  Called by the kernel from
+        * tty_io.c and n_tty.c.
+        */
+       tty_set_operations(brd->PrintDriver, &dgap_tty_ops);
+
+       if (!brd->dgap_Major_Serial_Registered) {
+               /* Register tty devices */
+               rc = tty_register_driver(brd->SerialDriver);
+               if (rc < 0) {
+                       APR(("Can't register tty device (%d)\n", rc));
+                       return(rc);
+               }
+               brd->dgap_Major_Serial_Registered = TRUE;
+               dgap_BoardsByMajor[brd->SerialDriver->major] = brd;
+               brd->dgap_Serial_Major = brd->SerialDriver->major;
+       }
+
+       if (!brd->dgap_Major_TransparentPrint_Registered) {
+               /* Register Transparent Print devices */
+               rc = tty_register_driver(brd->PrintDriver);
+               if (rc < 0) {
+                       APR(("Can't register Transparent Print device (%d)\n", rc));
+                       return(rc);
+               }
+               brd->dgap_Major_TransparentPrint_Registered = TRUE;
+               dgap_BoardsByMajor[brd->PrintDriver->major] = brd;
+               brd->dgap_TransparentPrint_Major = brd->PrintDriver->major;
+       }
+
+       DPR_INIT(("DGAP REGISTER TTY: MAJORS: %d %d\n", brd->SerialDriver->major,
+               brd->PrintDriver->major));
+
+       return (rc);
+}
+
+
+/*
+ * dgap_tty_init()
+ *
+ * Init the tty subsystem.  Called once per board after board has been
+ * downloaded and init'ed.
+ */
+int dgap_tty_init(struct board_t *brd)
+{
+       int i;
+       int tlw;
+       uint true_count = 0;
+       uchar *vaddr;
+       uchar modem = 0;
+       struct channel_t *ch;
+       struct bs_t *bs;
+       struct cm_t *cm;
+
+       if (!brd)
+               return (-ENXIO);
+
+       DPR_INIT(("dgap_tty_init start\n"));
+
+       /*
+        * Initialize board structure elements.
+        */
+
+       vaddr = brd->re_map_membase;
+       true_count = readw((vaddr + NCHAN));
+
+       brd->nasync = dgap_config_get_number_of_ports(brd);
+
+       if (!brd->nasync) {
+               brd->nasync = brd->maxports;
+       }
+
+       if (brd->nasync > brd->maxports) {
+               brd->nasync = brd->maxports;
+       }
+
+       if (true_count != brd->nasync) {
+               if ((brd->type == PPCM) && (true_count == 64)) {
+                       APR(("***WARNING**** %s configured for %d ports, has %d ports.\nPlease make SURE the EBI cable running from the card\nto each EM module is plugged into EBI IN!\n",
+                               brd->name, brd->nasync, true_count));
+               }
+               else if ((brd->type == PPCM) && (true_count == 0)) {
+                       APR(("***WARNING**** %s configured for %d ports, has %d ports.\nPlease make SURE the EBI cable running from the card\nto each EM module is plugged into EBI IN!\n",
+                               brd->name, brd->nasync, true_count));
+               }
+               else {
+                       APR(("***WARNING**** %s configured for %d ports, has %d ports.\n",
+                               brd->name, brd->nasync, true_count));
+               }
+
+               brd->nasync = true_count;
+
+               /* If no ports, don't bother going any further */
+               if (!brd->nasync) {
+                       brd->state = BOARD_FAILED;
+                       brd->dpastatus = BD_NOFEP;
+                       return(-ENXIO);
+               }
+       }
+
+       /*
+        * Allocate channel memory that might not have been allocated
+        * when the driver was first loaded.
+        */
+       for (i = 0; i < brd->nasync; i++) {
+               if (!brd->channels[i]) {
+                       brd->channels[i] = dgap_driver_kzmalloc(sizeof(struct channel_t), GFP_ATOMIC);
+                       if (!brd->channels[i]) {
+                               DPR_CORE(("%s:%d Unable to allocate memory for channel struct\n",
+                                   __FILE__, __LINE__));
+                       }
+               }
+       }
+
+       ch = brd->channels[0];
+       vaddr = brd->re_map_membase;
+
+       bs = (struct bs_t *) ((ulong) vaddr + CHANBUF);
+       cm = (struct cm_t *) ((ulong) vaddr + CMDBUF);
+
+       brd->bd_bs = bs;
+
+       /* Set up channel variables */
+       for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) {
+
+               if (!brd->channels[i])
+                       continue;
+
+               DGAP_SPINLOCK_INIT(ch->ch_lock);
+
+               /* Store all our magic numbers */
+               ch->magic = DGAP_CHANNEL_MAGIC;
+               ch->ch_tun.magic = DGAP_UNIT_MAGIC;
+               ch->ch_tun.un_type = DGAP_SERIAL;
+               ch->ch_tun.un_ch = ch;
+               ch->ch_tun.un_dev = i;
+
+               ch->ch_pun.magic = DGAP_UNIT_MAGIC;
+               ch->ch_pun.un_type = DGAP_PRINT;
+               ch->ch_pun.un_ch = ch;
+               ch->ch_pun.un_dev = i;
+
+               ch->ch_vaddr = vaddr;
+               ch->ch_bs = bs;
+               ch->ch_cm = cm;
+               ch->ch_bd = brd;
+               ch->ch_portnum = i;
+               ch->ch_digi = dgap_digi_init;
+
+               /*
+                * Set up digi dsr and dcd bits based on altpin flag.
+                */
+               if (dgap_config_get_altpin(brd)) {
+                       ch->ch_dsr      = DM_CD;
+                       ch->ch_cd       = DM_DSR;
+                       ch->ch_digi.digi_flags |= DIGI_ALTPIN;
+               }
+               else {
+                       ch->ch_cd       = DM_CD;
+                       ch->ch_dsr      = DM_DSR;
+               }
+
+               ch->ch_taddr = vaddr + ((ch->ch_bs->tx_seg) << 4);
+               ch->ch_raddr = vaddr + ((ch->ch_bs->rx_seg) << 4);
+               ch->ch_tx_win = 0;
+               ch->ch_rx_win = 0;
+               ch->ch_tsize = readw(&(ch->ch_bs->tx_max)) + 1;
+               ch->ch_rsize = readw(&(ch->ch_bs->rx_max)) + 1;
+               ch->ch_tstart = 0;
+               ch->ch_rstart = 0;
+
+               /* .25 second delay */
+               ch->ch_close_delay = 250;
+
+               /*
+                * Set queue water marks, interrupt mask,
+                * and general tty parameters. 
+                */
+               ch->ch_tlw = tlw = ch->ch_tsize >= 2000 ? ((ch->ch_tsize * 5) / 8) : ch->ch_tsize / 2;
+
+               dgap_cmdw(ch, STLOW, tlw, 0);
+
+               dgap_cmdw(ch, SRLOW, ch->ch_rsize / 2, 0);
+
+               dgap_cmdw(ch, SRHIGH, 7 * ch->ch_rsize / 8, 0);
+
+               ch->ch_mistat = readb(&(ch->ch_bs->m_stat));
+
+               init_waitqueue_head(&ch->ch_flags_wait);
+               init_waitqueue_head(&ch->ch_tun.un_flags_wait);
+               init_waitqueue_head(&ch->ch_pun.un_flags_wait);
+               init_waitqueue_head(&ch->ch_sniff_wait);
+
+               /* Turn on all modem interrupts for now */
+               modem = (DM_CD | DM_DSR | DM_CTS | DM_RI);
+               writeb(modem, &(ch->ch_bs->m_int));
+
+               /*
+                * Set edelay to 0 if interrupts are turned on,
+                * otherwise set edelay to the usual 100.
+                */
+               if (brd->intr_used)
+                       writew(0, &(ch->ch_bs->edelay));
+               else
+                       writew(100, &(ch->ch_bs->edelay));
+       
+               writeb(1, &(ch->ch_bs->idata));
+       }
+
+
+       DPR_INIT(("dgap_tty_init finish\n"));
+
+       return (0);
+}
+
+
+/*
+ * dgap_tty_post_uninit()
+ *
+ * UnInitialize any global tty related data.
+ */
+void dgap_tty_post_uninit(void)
+{
+       if (dgap_TmpWriteBuf) {
+               kfree(dgap_TmpWriteBuf);
+               dgap_TmpWriteBuf = NULL;
+       }
+}
+
+
+/*
+ * dgap_tty_uninit()
+ *
+ * Uninitialize the TTY portion of this driver.  Free all memory and
+ * resources. 
+ */
+void dgap_tty_uninit(struct board_t *brd)
+{
+       int i = 0;
+
+       if (brd->dgap_Major_Serial_Registered) {
+               dgap_BoardsByMajor[brd->SerialDriver->major] = NULL;
+               brd->dgap_Serial_Major = 0;
+               for (i = 0; i < brd->nasync; i++) {
+                       dgap_remove_tty_sysfs(brd->channels[i]->ch_tun.un_sysfs);
+                       tty_unregister_device(brd->SerialDriver, i);
+               }
+               tty_unregister_driver(brd->SerialDriver);
+               if (brd->SerialDriver->ttys) {
+                       kfree(brd->SerialDriver->ttys);
+                       brd->SerialDriver->ttys = NULL;
+               }
+               put_tty_driver(brd->SerialDriver);
+               brd->dgap_Major_Serial_Registered = FALSE;
+       }
+
+       if (brd->dgap_Major_TransparentPrint_Registered) {
+               dgap_BoardsByMajor[brd->PrintDriver->major] = NULL;
+               brd->dgap_TransparentPrint_Major = 0;
+               for (i = 0; i < brd->nasync; i++) {
+                       dgap_remove_tty_sysfs(brd->channels[i]->ch_pun.un_sysfs);
+                       tty_unregister_device(brd->PrintDriver, i);
+               }
+               tty_unregister_driver(brd->PrintDriver);
+               if (brd->PrintDriver->ttys) {
+                       kfree(brd->PrintDriver->ttys);
+                       brd->PrintDriver->ttys = NULL;
+               }
+               put_tty_driver(brd->PrintDriver);
+               brd->dgap_Major_TransparentPrint_Registered = FALSE;
+       }
+}
+
+
+#define TMPBUFLEN (1024)
+
+/*
+ * dgap_sniff - Dump data out to the "sniff" buffer if the
+ * proc sniff file is opened...
+ */
+static void dgap_sniff_nowait_nolock(struct channel_t *ch, uchar *text, uchar *buf, int len)
+{
+       struct timeval tv;
+       int n;
+       int r;
+       int nbuf;
+       int i;
+       int tmpbuflen;
+       char tmpbuf[TMPBUFLEN];
+       char *p = tmpbuf;
+       int too_much_data;
+
+       /* Leave if sniff not open */
+       if (!(ch->ch_sniff_flags & SNIFF_OPEN))
+               return;
+
+       do_gettimeofday(&tv);
+
+       /* Create our header for data dump */
+       p += sprintf(p, "<%ld %ld><%s><", tv.tv_sec, tv.tv_usec, text);
+       tmpbuflen = p - tmpbuf;
+
+       do {
+               too_much_data = 0;
+
+               for (i = 0; i < len && tmpbuflen < (TMPBUFLEN - 4); i++) {
+                       p += sprintf(p, "%02x ", *buf);
+                       buf++;
+                       tmpbuflen = p - tmpbuf;
+               }
+
+               if (tmpbuflen < (TMPBUFLEN - 4)) {
+                       if (i > 0)
+                               p += sprintf(p - 1, "%s\n", ">");
+                       else
+                               p += sprintf(p, "%s\n", ">");
+               } else {
+                       too_much_data = 1;
+                       len -= i;
+               }
+
+               nbuf = strlen(tmpbuf);
+               p = tmpbuf;
+
+               /*
+                *  Loop while data remains.
+                */
+               while (nbuf > 0 && ch->ch_sniff_buf != 0) {
+                       /*
+                        *  Determine the amount of available space left in the
+                        *  buffer.  If there's none, wait until some appears.
+                        */
+                       n = (ch->ch_sniff_out - ch->ch_sniff_in - 1) & SNIFF_MASK;
+
+                       /*
+                        * If there is no space left to write to in our sniff buffer,
+                        * we have no choice but to drop the data.
+                        * We *cannot* sleep here waiting for space, because this
+                        * function was probably called by the interrupt/timer routines!
+                        */
+                       if (n == 0) {
+                               return;
+                       }
+       
+                       /*
+                        * Copy as much data as will fit.
+                        */
+
+                       if (n > nbuf)
+                               n = nbuf;
+
+                       r = SNIFF_MAX - ch->ch_sniff_in;
+
+                       if (r <= n) {
+                               memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, r);
+
+                               n -= r;
+                               ch->ch_sniff_in = 0;
+                               p += r;
+                               nbuf -= r;
+                       }
+
+                       memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, n);
+
+                       ch->ch_sniff_in += n;
+                       p += n;
+                       nbuf -= n;
+
+                       /*
+                        *  Wakeup any thread waiting for data
+                        */
+                       if (ch->ch_sniff_flags & SNIFF_WAIT_DATA) {
+                               ch->ch_sniff_flags &= ~SNIFF_WAIT_DATA;
+                               wake_up_interruptible(&ch->ch_sniff_wait);
+                       }
+               }
+
+               /*
+                * If the user sent us too much data to push into our tmpbuf,
+                * we need to keep looping around on all the data.
+                */
+               if (too_much_data) {
+                       p = tmpbuf;
+                       tmpbuflen = 0;
+               }
+
+       } while (too_much_data);
+}
+
+
+/*=======================================================================
+ *
+ *      dgap_input - Process received data.
+ * 
+ *              ch      - Pointer to channel structure.
+ * 
+ *=======================================================================*/
+
+void dgap_input(struct channel_t *ch)
+{
+       struct board_t *bd;
+       struct bs_t     *bs;
+       struct tty_struct *tp;
+       struct tty_ldisc *ld;
+       uint    rmask;
+       uint    head;
+       uint    tail;
+       int     data_len;
+       ulong   lock_flags;
+       ulong   lock_flags2;
+       int flip_len;
+       int len = 0;
+       int n = 0;
+       uchar *buf;
+       uchar tmpchar;
+       int s = 0;
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       tp = ch->ch_tun.un_tty;
+
+       bs  = ch->ch_bs;
+       if (!bs) {
+               return;
+       }
+
+       bd = ch->ch_bd;
+       if(!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_READ(("dgap_input start\n"));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       /* 
+        *      Figure the number of characters in the buffer.   
+        *      Exit immediately if none.
+        */
+
+       rmask = ch->ch_rsize - 1;
+
+       head = readw(&(bs->rx_head));
+       head &= rmask;
+       tail = readw(&(bs->rx_tail));
+       tail &= rmask;
+
+       data_len = (head - tail) & rmask;
+
+       if (data_len == 0) {
+               writeb(1, &(bs->idata));
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               DPR_READ(("No data on port %d\n", ch->ch_portnum));
+               return;
+       }
+
+       /*
+        * If the device is not open, or CREAD is off, flush
+        * input data and return immediately.
+        */
+       if ((bd->state != BOARD_READY) || !tp  || (tp->magic != TTY_MAGIC) ||
+            !(ch->ch_tun.un_flags & UN_ISOPEN) || !(tp->termios->c_cflag & CREAD) ||
+           (ch->ch_tun.un_flags & UN_CLOSING)) {
+
+               DPR_READ(("input. dropping %d bytes on port %d...\n", data_len, ch->ch_portnum));
+               DPR_READ(("input. tp: %p tp->magic: %x MAGIC:%x ch flags: %x\n",
+                       tp, tp ? tp->magic : 0, TTY_MAGIC, ch->ch_tun.un_flags));
+               writew(head, &(bs->rx_tail));
+               writeb(1, &(bs->idata));
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return;
+       }
+
+       /*
+        * If we are throttled, simply don't read any data.
+        */
+       if (ch->ch_flags & CH_RXBLOCK) {
+               writeb(1, &(bs->idata));
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               DPR_READ(("Port %d throttled, not reading any data. head: %x tail: %x\n",
+                       ch->ch_portnum, head, tail));
+               return;
+       }
+
+       /*
+        *      Ignore oruns.
+        */
+       tmpchar = readb(&(bs->orun));
+       if (tmpchar) {
+               ch->ch_err_overrun++;
+               writeb(0, &(bs->orun));
+       }
+
+       DPR_READ(("dgap_input start 2\n"));
+
+       /* Decide how much data we can send into the tty layer */
+       if (dgap_rawreadok && tp->real_raw)
+               flip_len = MYFLIPLEN;
+       else
+               flip_len = TTY_FLIPBUF_SIZE;
+
+       /* Chop down the length, if needed */
+       len = min(data_len, flip_len);
+       len = min(len, (N_TTY_BUF_SIZE - 1) - tp->read_cnt);
+
+       ld = tty_ldisc_ref(tp);
+                
+#ifdef TTY_DONT_FLIP
+       /*
+        * If the DONT_FLIP flag is on, don't flush our buffer, and act
+        * like the ld doesn't have any space to put the data right now.  
+        */
+       if (test_bit(TTY_DONT_FLIP, &tp->flags))   
+               len = 0;
+#endif
+
+       /*
+        * If we were unable to get a reference to the ld,
+        * don't flush our buffer, and act like the ld doesn't
+        * have any space to put the data right now.
+        */
+       if (!ld) {
+               len = 0;
+       } else {
+               /*
+                * If ld doesn't have a pointer to a receive_buf function,
+                * flush the data, then act like the ld doesn't have any
+                * space to put the data right now.
+                */
+               if (!ld->ops->receive_buf) {
+                       writew(head, &(bs->rx_tail));
+                       len = 0;
+               }
+       }
+
+       if (len <= 0) {
+               writeb(1, &(bs->idata));
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               DPR_READ(("dgap_input 1 - finish\n"));
+               if (ld)
+                       tty_ldisc_deref(ld);
+               return;
+       }
+
+       buf = ch->ch_bd->flipbuf;
+       n = len;
+
+       /*
+        * n now contains the most amount of data we can copy,
+        * bounded either by our buffer size or the amount
+        * of data the card actually has pending...
+        */
+       while (n) {
+
+               s = ((head >= tail) ? head : ch->ch_rsize) - tail;
+               s = min(s, n);
+
+               if (s <= 0)
+                       break;
+
+               memcpy_fromio(buf, (char *) ch->ch_raddr + tail, s);
+               dgap_sniff_nowait_nolock(ch, "USER READ", buf, s);
+
+               tail += s;
+               buf += s;
+
+               n -= s;
+               /* Flip queue if needed */
+               tail &= rmask;
+       }
+
+       writew(tail, &(bs->rx_tail));
+       writeb(1, &(bs->idata));
+       ch->ch_rxcount += len;
+
+       /*
+        * If we are completely raw, we don't need to go through a lot
+        * of the tty layers that exist.
+        * In this case, we take the shortest and fastest route we
+        * can to relay the data to the user.
+        *
+        * On the other hand, if we are not raw, we need to go through
+        * the tty layer, which has its API more well defined.
+        */
+        if (dgap_rawreadok && tp->real_raw) {
+
+               /* !!! WE *MUST* LET GO OF ALL LOCKS BEFORE CALLING RECEIVE BUF !!! */
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               DPR_READ(("dgap_input. %d real_raw len:%d calling receive_buf for buffer for board %d\n", 
+                        __LINE__, len, ch->ch_bd->boardnum));
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+               tp->ldisc->ops->receive_buf(tp, ch->ch_bd->flipbuf, NULL, len);
+#else
+               tp->ldisc.ops->receive_buf(tp, ch->ch_bd->flipbuf, NULL, len);
+#endif
+       }
+       else {
+               if (I_PARMRK(tp) || I_BRKINT(tp) || I_INPCK(tp)) {
+                       dgap_parity_scan(ch, ch->ch_bd->flipbuf, ch->ch_bd->flipflagbuf, &len);
+
+                       len = tty_buffer_request_room(tp, len);
+                       tty_insert_flip_string_flags(tp, ch->ch_bd->flipbuf,
+                               ch->ch_bd->flipflagbuf, len);
+               }
+               else {
+                       len = tty_buffer_request_room(tp, len);
+                       tty_insert_flip_string(tp, ch->ch_bd->flipbuf, len);
+               }
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               /* Tell the tty layer its okay to "eat" the data now */
+               tty_flip_buffer_push(tp);
+       }
+
+       if (ld)
+               tty_ldisc_deref(ld);
+
+       DPR_READ(("dgap_input - finish\n"));
+}
+
+
+/************************************************************************   
+ * Determines when CARRIER changes state and takes appropriate
+ * action. 
+ ************************************************************************/
+void dgap_carrier(struct channel_t *ch)
+{
+       struct board_t *bd;
+
+        int virt_carrier = 0;
+        int phys_carrier = 0;
+       DPR_CARR(("dgap_carrier called...\n"));
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       bd = ch->ch_bd;
+
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       /* Make sure altpin is always set correctly */
+       if (ch->ch_digi.digi_flags & DIGI_ALTPIN) {
+               ch->ch_dsr      = DM_CD;
+               ch->ch_cd       = DM_DSR;
+       }
+       else {
+               ch->ch_dsr      = DM_DSR;
+               ch->ch_cd       = DM_CD;
+       }
+
+       if (ch->ch_mistat & D_CD(ch)) {
+               DPR_CARR(("mistat: %x  D_CD: %x\n", ch->ch_mistat, D_CD(ch)));
+               phys_carrier = 1;
+       }
+
+       if (ch->ch_digi.digi_flags & DIGI_FORCEDCD) {
+               virt_carrier = 1;
+       }  
+
+       if (ch->ch_c_cflag & CLOCAL) {
+               virt_carrier = 1;
+       }  
+
+
+       DPR_CARR(("DCD: physical: %d virt: %d\n", phys_carrier, virt_carrier));
+
+       /*
+        * Test for a VIRTUAL carrier transition to HIGH.
+        */
+       if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) {
+
+               /*
+                * When carrier rises, wake any threads waiting
+                * for carrier in the open routine.
+                */
+
+               DPR_CARR(("carrier: virt DCD rose\n"));
+
+               if (waitqueue_active(&(ch->ch_flags_wait)))
+                       wake_up_interruptible(&ch->ch_flags_wait);
+       }
+
+       /*
+        * Test for a PHYSICAL carrier transition to HIGH.
+        */
+       if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) {
+
+               /*
+                * When carrier rises, wake any threads waiting
+                * for carrier in the open routine.
+                */
+
+               DPR_CARR(("carrier: physical DCD rose\n"));
+
+               if (waitqueue_active(&(ch->ch_flags_wait)))
+                       wake_up_interruptible(&ch->ch_flags_wait);
+       }
+
+       /*
+        *  Test for a PHYSICAL transition to low, so long as we aren't
+        *  currently ignoring physical transitions (which is what "virtual
+        *  carrier" indicates).
+        *
+        *  The transition of the virtual carrier to low really doesn't
+        *  matter... it really only means "ignore carrier state", not
+        *  "make pretend that carrier is there".
+        */
+       if ((virt_carrier == 0) && ((ch->ch_flags & CH_CD) != 0) &&
+           (phys_carrier == 0)) 
+       {
+
+               /*
+                *   When carrier drops:
+                *
+                *   Drop carrier on all open units.
+                *
+                *   Flush queues, waking up any task waiting in the
+                *   line discipline.
+                *
+                *   Send a hangup to the control terminal.
+                *
+                *   Enable all select calls.
+                */
+               if (waitqueue_active(&(ch->ch_flags_wait)))
+                       wake_up_interruptible(&ch->ch_flags_wait);
+
+               if (ch->ch_tun.un_open_count > 0) {
+                       DPR_CARR(("Sending tty hangup\n"));
+                       tty_hangup(ch->ch_tun.un_tty);
+               }
+
+               if (ch->ch_pun.un_open_count > 0) { 
+                       DPR_CARR(("Sending pr hangup\n"));
+                       tty_hangup(ch->ch_pun.un_tty);
+               }
+       }
+
+       /*
+        *  Make sure that our cached values reflect the current reality.
+        */
+       if (virt_carrier == 1)
+               ch->ch_flags |= CH_FCAR;
+       else      
+               ch->ch_flags &= ~CH_FCAR;
+
+       if (phys_carrier == 1)
+               ch->ch_flags |= CH_CD;
+       else
+               ch->ch_flags &= ~CH_CD;
+}
+
+
+/************************************************************************
+ *      
+ * TTY Entry points and helper functions
+ *              
+ ************************************************************************/
+
+/*
+ * dgap_tty_open()
+ *
+ */
+static int dgap_tty_open(struct tty_struct *tty, struct file *file)
+{
+       struct board_t  *brd;
+       struct channel_t *ch;
+       struct un_t     *un;
+       struct bs_t     *bs;
+       uint            major = 0;
+       uint            minor = 0;
+       int             rc = 0;
+       ulong           lock_flags;
+       ulong           lock_flags2;
+       u16             head;
+
+       rc = 0;
+
+       major = MAJOR(tty_devnum(tty));
+       minor = MINOR(tty_devnum(tty));
+
+       if (major > 255) {
+               return -ENXIO;
+       }
+
+       /* Get board pointer from our array of majors we have allocated */
+       brd = dgap_BoardsByMajor[major];
+       if (!brd) {
+               return -ENXIO;
+       }
+
+       /*
+        * If board is not yet up to a state of READY, go to
+        * sleep waiting for it to happen or they cancel the open.
+        */
+       rc = wait_event_interruptible(brd->state_wait,
+               (brd->state & BOARD_READY));
+
+       if (rc) {
+               return rc;
+       }
+
+       DGAP_LOCK(brd->bd_lock, lock_flags);
+
+       /* The wait above should guarentee this cannot happen */
+       if (brd->state != BOARD_READY) {
+               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+               return -ENXIO;
+       }
+
+       /* If opened device is greater than our number of ports, bail. */
+       if (MINOR(tty_devnum(tty)) > brd->nasync) {
+               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+               return -ENXIO;
+       }
+
+       ch = brd->channels[minor];
+       if (!ch) {
+               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+               return -ENXIO;
+       }
+
+       /* Grab channel lock */
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       /* Figure out our type */
+       if (major == brd->dgap_Serial_Major) {
+               un = &brd->channels[minor]->ch_tun;
+               un->un_type = DGAP_SERIAL;
+       }
+       else if (major == brd->dgap_TransparentPrint_Major) {
+               un = &brd->channels[minor]->ch_pun;
+               un->un_type = DGAP_PRINT;
+       }
+       else {
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+               DPR_OPEN(("%d Unknown TYPE!\n", __LINE__));
+               return -ENXIO;
+       }
+
+       /* Store our unit into driver_data, so we always have it available. */
+       tty->driver_data = un;
+
+       DPR_OPEN(("Open called. MAJOR: %d MINOR:%d unit: %p NAME: %s\n",
+               MAJOR(tty_devnum(tty)), MINOR(tty_devnum(tty)), un, brd->name));
+
+       /*
+        * Error if channel info pointer is 0.
+        */
+       if ((bs = ch->ch_bs) == 0) {
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(brd->bd_lock, lock_flags);
+               DPR_OPEN(("%d BS is 0!\n", __LINE__));
+               return -ENXIO;
+        }
+
+       DPR_OPEN(("%d: tflag=%x  pflag=%x\n", __LINE__, ch->ch_tun.un_flags, ch->ch_pun.un_flags));
+
+       /*
+        * Initialize tty's
+        */
+       if (!(un->un_flags & UN_ISOPEN)) {
+               /* Store important variables. */
+               un->un_tty     = tty;
+
+               /* Maybe do something here to the TTY struct as well? */
+       }
+
+       /*
+        * Initialize if neither terminal or printer is open.
+        */
+       if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
+
+               DPR_OPEN(("dgap_open: initializing channel in open...\n"));
+
+               ch->ch_mforce = 0;
+               ch->ch_mval = 0;
+
+               /*
+                * Flush input queue.
+                */
+               head = readw(&(bs->rx_head));
+               writew(head, &(bs->rx_tail));
+
+               ch->ch_flags = 0;
+               ch->pscan_state = 0;
+               ch->pscan_savechar = 0;
+
+               ch->ch_c_cflag   = tty->termios->c_cflag;
+               ch->ch_c_iflag   = tty->termios->c_iflag;
+               ch->ch_c_oflag   = tty->termios->c_oflag;
+               ch->ch_c_lflag   = tty->termios->c_lflag;
+               ch->ch_startc = tty->termios->c_cc[VSTART];
+               ch->ch_stopc  = tty->termios->c_cc[VSTOP];
+
+               /* TODO: flush our TTY struct here? */
+       }
+
+       dgap_carrier(ch);
+       /*
+        * Run param in case we changed anything
+        */
+       dgap_param(tty);
+
+       /*                              
+        * follow protocol for opening port
+        */
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(brd->bd_lock, lock_flags);
+
+       rc = dgap_block_til_ready(tty, file, ch);
+
+       if (!un->un_tty) {
+               return -ENODEV;
+       }
+
+       if (rc) {
+               DPR_OPEN(("dgap_tty_open returning after dgap_block_til_ready "
+                       "with %d\n", rc));
+       }
+
+       /* No going back now, increment our unit and channel counters */
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+       ch->ch_open_count++;
+       un->un_open_count++;
+       un->un_flags |= (UN_ISOPEN);
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       DPR_OPEN(("dgap_tty_open finished\n"));
+       return (rc);
+}
+
+
+/*   
+ * dgap_block_til_ready()
+ *
+ * Wait for DCD, if needed.
+ */
+static int dgap_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch)
+{ 
+       int retval = 0;
+       struct un_t *un = NULL;
+       ulong   lock_flags;
+       uint    old_flags = 0;
+       int sleep_on_un_flags = 0;
+
+       if (!tty || tty->magic != TTY_MAGIC || !file || !ch || ch->magic != DGAP_CHANNEL_MAGIC) {
+               return (-ENXIO);
+       }
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC) {
+               return (-ENXIO);
+       }
+
+       DPR_OPEN(("dgap_block_til_ready - before block.\n"));
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       ch->ch_wopen++;
+
+       /* Loop forever */
+       while (1) {
+
+               sleep_on_un_flags = 0;
+
+               /*
+                * If board has failed somehow during our sleep, bail with error.
+                */
+               if (ch->ch_bd->state == BOARD_FAILED) {
+                       retval = -ENXIO;
+                       break;
+               }
+
+               /* If tty was hung up, break out of loop and set error. */
+               if (tty_hung_up_p(file)) {
+                       retval = -EAGAIN;
+                       break;
+               }
+
+               /*
+                * If either unit is in the middle of the fragile part of close,
+                * we just cannot touch the channel safely.
+                * Go back to sleep, knowing that when the channel can be
+                * touched safely, the close routine will signal the 
+                * ch_wait_flags to wake us back up.
+                */
+               if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_CLOSING)) {
+
+                       /*
+                        * Our conditions to leave cleanly and happily:
+                        * 1) NONBLOCKING on the tty is set.
+                        * 2) CLOCAL is set.
+                        * 3) DCD (fake or real) is active.
+                        */
+
+                       if (file->f_flags & O_NONBLOCK) {
+                               break;
+                       }
+
+                       if (tty->flags & (1 << TTY_IO_ERROR)) {
+                               break;
+                       }
+
+                       if (ch->ch_flags & CH_CD) {
+                               DPR_OPEN(("%d: ch_flags: %x\n", __LINE__, ch->ch_flags));
+                               break;
+                       }
+
+                       if (ch->ch_flags & CH_FCAR) {
+                               DPR_OPEN(("%d: ch_flags: %x\n", __LINE__, ch->ch_flags));
+                               break;
+                       }
+               }
+               else {
+                       sleep_on_un_flags = 1;
+               }
+
+               /*
+                * If there is a signal pending, the user probably
+                * interrupted (ctrl-c) us.
+                * Leave loop with error set.
+                */
+               if (signal_pending(current)) {
+                       DPR_OPEN(("%d: signal pending...\n", __LINE__));
+                       retval = -ERESTARTSYS;
+                       break;
+               }
+
+               DPR_OPEN(("dgap_block_til_ready - blocking.\n"));
+
+               /*
+                * Store the flags before we let go of channel lock
+                */
+               if (sleep_on_un_flags)
+                       old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags;
+               else
+                       old_flags = ch->ch_flags;
+
+               /*
+                * Let go of channel lock before calling schedule.
+                * Our poller will get any FEP events and wake us up when DCD
+                * eventually goes active.
+                */
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+               DPR_OPEN(("Going to sleep on %s flags...\n",
+                       (sleep_on_un_flags ? "un" : "ch")));
+
+               /*
+                * Wait for something in the flags to change from the current value.
+                */
+               if (sleep_on_un_flags) {
+                       retval = wait_event_interruptible(un->un_flags_wait,
+                               (old_flags != (ch->ch_tun.un_flags | ch->ch_pun.un_flags)));
+               }
+               else {
+                       retval = wait_event_interruptible(ch->ch_flags_wait,
+                               (old_flags != ch->ch_flags));
+               }
+
+               DPR_OPEN(("After sleep... retval: %x\n", retval));
+
+               /*
+                * We got woken up for some reason.
+                * Before looping around, grab our channel lock.
+                */
+               DGAP_LOCK(ch->ch_lock, lock_flags);
+       }
+
+       ch->ch_wopen--;
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       DPR_OPEN(("dgap_block_til_ready - after blocking.\n"));
+
+       if (retval) {
+               DPR_OPEN(("dgap_block_til_ready - done. error. retval: %x\n", retval));
+               return(retval);
+       }
+
+       DPR_OPEN(("dgap_block_til_ready - done no error. jiffies: %lu\n", jiffies));
+
+       return(0);
+}
+
+
+/*
+ * dgap_tty_hangup()
+ *
+ * Hangup the port.  Like a close, but don't wait for output to drain.
+ */     
+static void dgap_tty_hangup(struct tty_struct *tty)
+{
+       struct board_t  *bd;
+       struct channel_t *ch;
+       struct un_t     *un;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_CLOSE(("dgap_hangup called. ch->ch_open_count: %d un->un_open_count: %d\n",
+               ch->ch_open_count, un->un_open_count));
+
+       /* flush the transmit queues */
+       dgap_tty_flush_buffer(tty);
+
+       DPR_CLOSE(("dgap_hangup finished. ch->ch_open_count: %d un->un_open_count: %d\n",
+               ch->ch_open_count, un->un_open_count));
+}
+
+
+
+/*
+ * dgap_tty_close()
+ *
+ */
+static void dgap_tty_close(struct tty_struct *tty, struct file *file)
+{
+       struct ktermios *ts;
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong lock_flags;
+       int rc = 0;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       ts = tty->termios;
+
+       DPR_CLOSE(("Close called\n"));
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       /*
+        * Determine if this is the last close or not - and if we agree about
+        * which type of close it is with the Line Discipline
+        */
+       if ((tty->count == 1) && (un->un_open_count != 1)) {
+               /*
+                * Uh, oh.  tty->count is 1, which means that the tty
+                * structure will be freed.  un_open_count should always
+                * be one in these conditions.  If it's greater than
+                * one, we've got real problems, since it means the
+                * serial port won't be shutdown.
+                */
+               APR(("tty->count is 1, un open count is %d\n", un->un_open_count));
+               un->un_open_count = 1;
+       }  
+
+       if (--un->un_open_count < 0) {
+               APR(("bad serial port open count of %d\n", un->un_open_count));
+               un->un_open_count = 0;
+       }
+
+       ch->ch_open_count--;
+
+       if (ch->ch_open_count && un->un_open_count) {
+               DPR_CLOSE(("dgap_tty_close: not last close ch: %d un:%d\n",
+                       ch->ch_open_count, un->un_open_count));
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+                return;
+        }
+
+       /* OK, its the last close on the unit */
+       DPR_CLOSE(("dgap_tty_close - last close on unit procedures\n"));
+
+       un->un_flags |= UN_CLOSING;
+
+       tty->closing = 1;
+
+       /*
+        * Only officially close channel if count is 0 and
+         * DIGI_PRINTER bit is not set.
+        */
+       if ((ch->ch_open_count == 0) && !(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
+
+               ch->ch_flags &= ~(CH_RXBLOCK);
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+               /* wait for output to drain */
+               /* This will also return if we take an interrupt */
+
+               DPR_CLOSE(("Calling wait_for_drain\n"));
+               rc = dgap_wait_for_drain(tty);
+               DPR_CLOSE(("After calling wait_for_drain\n"));
+
+               if (rc) {
+                       DPR_BASIC(("dgap_tty_close - bad return: %d ", rc));
+               }
+
+               dgap_tty_flush_buffer(tty);
+               tty_ldisc_flush(tty);
+
+               DGAP_LOCK(ch->ch_lock, lock_flags);
+
+               tty->closing = 0;
+
+               /*
+                * If we have HUPCL set, lower DTR and RTS
+                */
+               if (ch->ch_c_cflag & HUPCL ) {
+                       DPR_CLOSE(("Close. HUPCL set, dropping DTR/RTS\n"));
+                       ch->ch_mostat &= ~(D_RTS(ch)|D_DTR(ch));
+                       dgap_cmdb( ch, SMODEM, 0, D_DTR(ch)|D_RTS(ch), 0 );
+
+                       /*
+                        * Go to sleep to ensure RTS/DTR 
+                        * have been dropped for modems to see it.
+                        */
+                       if (ch->ch_close_delay) {
+                               DPR_CLOSE(("Close. Sleeping for RTS/DTR drop\n"));
+
+                               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+                               dgap_ms_sleep(ch->ch_close_delay);
+                               DGAP_LOCK(ch->ch_lock, lock_flags);
+
+                               DPR_CLOSE(("Close. After sleeping for RTS/DTR drop\n"));
+                       }
+               }
+
+               ch->pscan_state = 0;
+               ch->pscan_savechar = 0;
+               ch->ch_baud_info = 0;
+
+       }
+
+       /*
+        * turn off print device when closing print device.
+        */
+       if ((un->un_type == DGAP_PRINT)  && (ch->ch_flags & CH_PRON) ) {
+               dgap_wmove(ch, ch->ch_digi.digi_offstr,
+                       (int) ch->ch_digi.digi_offlen);
+               ch->ch_flags &= ~CH_PRON;
+       }
+
+       un->un_tty = NULL;
+       un->un_flags &= ~(UN_ISOPEN | UN_CLOSING);
+       tty->driver_data = NULL;
+
+       DPR_CLOSE(("Close. Doing wakeups\n"));
+       wake_up_interruptible(&ch->ch_flags_wait);
+       wake_up_interruptible(&un->un_flags_wait);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+                
+        DPR_BASIC(("dgap_tty_close - complete\n"));
+}
+
+
+/*
+ * dgap_tty_chars_in_buffer()
+ *
+ * Return number of characters that have not been transmitted yet.
+ *
+ * This routine is used by the line discipline to determine if there
+ * is data waiting to be transmitted/drained/flushed or not.
+ */
+static int dgap_tty_chars_in_buffer(struct tty_struct *tty)
+{
+       struct board_t *bd = NULL;
+       struct channel_t *ch = NULL;
+       struct un_t *un = NULL;
+       struct bs_t *bs = NULL;
+       uchar tbusy;
+       uint chars = 0;
+       u16 thead, ttail, tmask, chead, ctail;
+       ulong   lock_flags = 0;
+       ulong   lock_flags2 = 0;
+
+       if (tty == NULL)
+               return(0);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (0);
+
+        bs = ch->ch_bs;
+       if (!bs)
+               return (0);
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       tmask = (ch->ch_tsize - 1);
+
+       /* Get Transmit queue pointers */
+       thead = readw(&(bs->tx_head)) & tmask;
+       ttail = readw(&(bs->tx_tail)) & tmask;
+
+       /* Get tbusy flag */
+       tbusy = readb(&(bs->tbusy));
+
+       /* Get Command queue pointers */
+       chead = readw(&(ch->ch_cm->cm_head));
+       ctail = readw(&(ch->ch_cm->cm_tail));
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       /*
+        * The only way we know for sure if there is no pending
+        * data left to be transferred, is if:
+        * 1) Transmit head and tail are equal (empty).
+        * 2) Command queue head and tail are equal (empty).
+        * 3) The "TBUSY" flag is 0. (Transmitter not busy).
+        */
+
+       if ((ttail == thead) && (tbusy == 0) && (chead == ctail)) {
+               chars = 0;
+       }
+       else {
+               if (thead >= ttail)
+                       chars = thead - ttail;
+               else
+                       chars = thead - ttail + ch->ch_tsize;
+               /*
+                * Fudge factor here.
+                * If chars is zero, we know that the command queue had
+                * something in it or tbusy was set.  Because we cannot
+                * be sure if there is still some data to be transmitted,
+                * lets lie, and tell ld we have 1 byte left.
+                */
+               if (chars == 0) {
+                       /*
+                        * If TBUSY is still set, and our tx buffers are empty,
+                        * force the firmware to send me another wakeup after
+                        * TBUSY has been cleared.
+                        */
+                       if (tbusy != 0) {
+                               DGAP_LOCK(ch->ch_lock, lock_flags);
+                               un->un_flags |= UN_EMPTY;
+                               writeb(1, &(bs->iempty));
+                               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+                       }
+                       chars = 1;
+               }
+       }
+
+       DPR_WRITE(("dgap_tty_chars_in_buffer. Port: %x - %d (head: %d tail: %d tsize: %d)\n", 
+               ch->ch_portnum, chars, thead, ttail, ch->ch_tsize));
+        return(chars);
+}
+
+
+static int dgap_wait_for_drain(struct tty_struct *tty)
+{
+       struct channel_t *ch;
+       struct un_t *un;
+       struct bs_t *bs;
+       int ret = -EIO;
+       uint count = 1;
+       ulong   lock_flags = 0;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return ret;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return ret;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return ret;
+
+        bs = ch->ch_bs;
+       if (!bs)
+               return ret;
+
+       ret = 0;
+
+       DPR_DRAIN(("dgap_wait_for_drain start\n"));
+
+       /* Loop until data is drained */
+       while (count != 0) {
+
+               count = dgap_tty_chars_in_buffer(tty);
+
+               if (count == 0)
+                       break;
+
+               /* Set flag waiting for drain */
+               DGAP_LOCK(ch->ch_lock, lock_flags);
+               un->un_flags |= UN_EMPTY;
+               writeb(1, &(bs->iempty));
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+               /* Go to sleep till we get woken up */
+               ret = wait_event_interruptible(un->un_flags_wait, ((un->un_flags & UN_EMPTY) == 0));
+               /* If ret is non-zero, user ctrl-c'ed us */
+               if (ret) {
+                       break;
+               }
+       }
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+       un->un_flags &= ~(UN_EMPTY);
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       DPR_DRAIN(("dgap_wait_for_drain finish\n"));
+       return (ret);
+}
+
+
+/*               
+ * dgap_maxcps_room
+ *
+ * Reduces bytes_available to the max number of characters
+ * that can be sent currently given the maxcps value, and
+ * returns the new bytes_available.  This only affects printer
+ * output.
+ */                     
+static int dgap_maxcps_room(struct tty_struct *tty, int bytes_available)
+{
+       struct channel_t *ch = NULL;
+       struct un_t *un = NULL;
+
+       if (tty == NULL)
+               return (bytes_available);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (bytes_available);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (bytes_available);
+
+       /*
+        * If its not the Transparent print device, return
+        * the full data amount.
+        */
+       if (un->un_type != DGAP_PRINT)
+               return (bytes_available);
+
+       if (ch->ch_digi.digi_maxcps > 0 && ch->ch_digi.digi_bufsize > 0 ) {
+               int cps_limit = 0;
+               unsigned long current_time = jiffies;
+               unsigned long buffer_time = current_time +
+                       (HZ * ch->ch_digi.digi_bufsize) / ch->ch_digi.digi_maxcps;
+
+               if (ch->ch_cpstime < current_time) {
+                       /* buffer is empty */
+                       ch->ch_cpstime = current_time;            /* reset ch_cpstime */
+                       cps_limit = ch->ch_digi.digi_bufsize;
+               }
+               else if (ch->ch_cpstime < buffer_time) {
+                       /* still room in the buffer */
+                       cps_limit = ((buffer_time - ch->ch_cpstime) * ch->ch_digi.digi_maxcps) / HZ;
+               }
+               else {
+                       /* no room in the buffer */
+                       cps_limit = 0; 
+               }
+
+               bytes_available = min(cps_limit, bytes_available);
+       }
+
+       return (bytes_available);
+}
+
+
+static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event)
+{
+       struct channel_t *ch = NULL;
+       struct bs_t *bs = NULL;
+
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+        bs = ch->ch_bs;
+       if (!bs)
+               return;
+
+       if ((event & UN_LOW) != 0) {
+               if ((un->un_flags & UN_LOW) == 0) {
+                       un->un_flags |= UN_LOW;
+                       writeb(1, &(bs->ilow));
+               }
+       }
+       if ((event & UN_LOW) != 0) {
+               if ((un->un_flags & UN_EMPTY) == 0) {
+                       un->un_flags |= UN_EMPTY;
+                       writeb(1, &(bs->iempty));
+               }
+       }
+}
+
+
+/*
+ * dgap_tty_write_room()
+ *
+ * Return space available in Tx buffer
+ */        
+static int dgap_tty_write_room(struct tty_struct *tty)
+{
+       struct channel_t *ch = NULL;
+       struct un_t *un = NULL;
+       struct bs_t *bs = NULL;
+       u16 head, tail, tmask;
+       int ret = 0;
+       ulong   lock_flags = 0;
+
+       if (tty == NULL || dgap_TmpWriteBuf == NULL)
+               return(0);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (0);
+
+        bs = ch->ch_bs;
+       if (!bs)
+               return (0);
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       tmask = ch->ch_tsize - 1;
+       head = readw(&(bs->tx_head)) & tmask;
+       tail = readw(&(bs->tx_tail)) & tmask;
+
+        if ((ret = tail - head - 1) < 0)
+                ret += ch->ch_tsize;
+
+       /* Limit printer to maxcps */
+       ret = dgap_maxcps_room(tty, ret);
+
+       /*
+        * If we are printer device, leave space for 
+        * possibly both the on and off strings.
+        */
+       if (un->un_type == DGAP_PRINT) {
+               if (!(ch->ch_flags & CH_PRON))
+                       ret -= ch->ch_digi.digi_onlen;
+               ret -= ch->ch_digi.digi_offlen;
+       }
+       else {
+               if (ch->ch_flags & CH_PRON)
+                       ret -= ch->ch_digi.digi_offlen;
+       }
+
+       if (ret < 0)
+               ret = 0;
+
+       /*
+        * Schedule FEP to wake us up if needed.
+        *
+        * TODO:  This might be overkill...
+        * Do we really need to schedule callbacks from the FEP
+        * in every case?  Can we get smarter based on ret?
+        */
+       dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+       DPR_WRITE(("dgap_tty_write_room - %d tail: %d head: %d\n", ret, tail, head));
+
+        return(ret);
+}
+
+
+/*
+ * dgap_tty_put_char()
+ *
+ * Put a character into ch->ch_buf
+ *                              
+ *      - used by the line discipline for OPOST processing
+ */
+static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c)
+{
+       /*
+        * Simply call tty_write.
+        */
+       DPR_WRITE(("dgap_tty_put_char called\n"));
+       dgap_tty_write(tty, &c, 1);
+       return 1;
+}
+
+
+/*
+ * dgap_tty_write()
+ *
+ * Take data from the user or kernel and send it out to the FEP.
+ * In here exists all the Transparent Print magic as well.
+ */
+static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
+{
+       struct channel_t *ch = NULL;
+       struct un_t *un = NULL;
+       struct bs_t *bs = NULL;
+       char *vaddr = NULL;
+       u16 head, tail, tmask, remain;
+       int bufcount = 0, n = 0;
+       int orig_count = 0;
+       ulong lock_flags;
+       int from_user = 0;
+
+       if (tty == NULL || dgap_TmpWriteBuf == NULL)
+               return(0);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (0);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return(0);
+
+        bs = ch->ch_bs;
+       if (!bs)
+               return(0);
+
+       if (!count)
+               return(0);
+
+       DPR_WRITE(("dgap_tty_write: Port: %x tty=%p user=%d len=%d\n",
+               ch->ch_portnum, tty, from_user, count));
+
+       /*
+        * Store original amount of characters passed in.
+        * This helps to figure out if we should ask the FEP
+        * to send us an event when it has more space available.
+        */
+       orig_count = count;
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       /* Get our space available for the channel from the board */
+       tmask = ch->ch_tsize - 1;
+       head = readw(&(bs->tx_head)) & tmask;
+       tail = readw(&(bs->tx_tail)) & tmask;
+
+       if ((bufcount = tail - head - 1) < 0)
+               bufcount += ch->ch_tsize;
+
+       DPR_WRITE(("%d: bufcount: %x count: %x tail: %x head: %x tmask: %x\n",
+               __LINE__, bufcount, count, tail, head, tmask));
+
+       /*
+        * Limit printer output to maxcps overall, with bursts allowed
+        * up to bufsize characters.
+        */
+       bufcount = dgap_maxcps_room(tty, bufcount);
+
+       /*
+        * Take minimum of what the user wants to send, and the
+        * space available in the FEP buffer.
+        */
+       count = min(count, bufcount);
+
+       /*
+        * Bail if no space left.
+        */
+       if (count <= 0) {
+               dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+               return(0);
+       }
+
+       /*
+        * Output the printer ON string, if we are in terminal mode, but
+        * need to be in printer mode.
+        */
+       if ((un->un_type == DGAP_PRINT) && !(ch->ch_flags & CH_PRON)) {
+               dgap_wmove(ch, ch->ch_digi.digi_onstr,
+                   (int) ch->ch_digi.digi_onlen);
+               head = readw(&(bs->tx_head)) & tmask;
+               ch->ch_flags |= CH_PRON;
+       }
+
+       /*
+        * On the other hand, output the printer OFF string, if we are
+        * currently in printer mode, but need to output to the terminal.
+        */
+       if ((un->un_type != DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
+               dgap_wmove(ch, ch->ch_digi.digi_offstr,
+                       (int) ch->ch_digi.digi_offlen);
+               head = readw(&(bs->tx_head)) & tmask;
+               ch->ch_flags &= ~CH_PRON;
+       }
+
+       /*
+        * If there is nothing left to copy, or I can't handle any more data, leave.
+        */
+       if (count <= 0) {
+               dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+               return(0);
+       }
+
+       if (from_user) {
+
+               count = min(count, WRITEBUFLEN);
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+               /*
+                * If data is coming from user space, copy it into a temporary
+                * buffer so we don't get swapped out while doing the copy to
+                * the board.
+                */
+               /* we're allowed to block if it's from_user */
+               if (down_interruptible(&dgap_TmpWriteSem)) {
+                       return (-EINTR);
+               }
+
+               if (copy_from_user(dgap_TmpWriteBuf, (const uchar __user *) buf, count)) {
+                       up(&dgap_TmpWriteSem);
+                       printk("Write: Copy from user failed!\n");
+                       return -EFAULT;
+               }
+
+               DGAP_LOCK(ch->ch_lock, lock_flags);
+
+               buf = dgap_TmpWriteBuf;
+       }
+
+       n = count;
+
+       /*
+        * If the write wraps over the top of the circular buffer,
+        * move the portion up to the wrap point, and reset the
+        * pointers to the bottom.
+        */
+       remain = ch->ch_tstart + ch->ch_tsize - head;
+
+       if (n >= remain) {
+               n -= remain;
+               vaddr = ch->ch_taddr + head;
+
+               memcpy_toio(vaddr, (uchar *) buf, remain);
+               dgap_sniff_nowait_nolock(ch, "USER WRITE", (uchar *) buf, remain);
+
+               head = ch->ch_tstart;
+               buf += remain;
+       }
+
+       if (n > 0) {
+
+               /*
+                * Move rest of data.
+                */
+               vaddr = ch->ch_taddr + head;
+               remain = n;
+
+               memcpy_toio(vaddr, (uchar *) buf, remain);
+               dgap_sniff_nowait_nolock(ch, "USER WRITE", (uchar *) buf, remain);
+
+               head += remain;
+
+       }
+
+       if (count) {
+               ch->ch_txcount += count;
+               head &= tmask;
+               writew(head, &(bs->tx_head));
+       }
+
+
+       dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
+
+       /*
+        * If this is the print device, and the
+        * printer is still on, we need to turn it
+        * off before going idle.  If the buffer is
+        * non-empty, wait until it goes empty.
+        * Otherwise turn it off right now.
+        */
+       if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
+               tail = readw(&(bs->tx_tail)) & tmask;
+
+               if (tail != head) {
+                       un->un_flags |= UN_EMPTY;
+                       writeb(1, &(bs->iempty));
+               }
+               else {
+                       dgap_wmove(ch, ch->ch_digi.digi_offstr,
+                               (int) ch->ch_digi.digi_offlen);
+                       head = readw(&(bs->tx_head)) & tmask;
+                       ch->ch_flags &= ~CH_PRON;
+               }
+       }
+
+       /* Update printer buffer empty time. */
+       if ((un->un_type == DGAP_PRINT) && (ch->ch_digi.digi_maxcps > 0)
+           && (ch->ch_digi.digi_bufsize > 0)) {
+                ch->ch_cpstime += (HZ * count) / ch->ch_digi.digi_maxcps;
+       }
+
+       if (from_user) {
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+               up(&dgap_TmpWriteSem);
+       } 
+       else {
+               DGAP_UNLOCK(ch->ch_lock, lock_flags);
+       }
+
+       DPR_WRITE(("Write finished - Write %d bytes of %d.\n", count, orig_count));
+
+       return (count);
+}
+
+
+
+/*
+ * Return modem signals to ld.
+ */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
+static int dgap_tty_tiocmget(struct tty_struct *tty)
+#else
+static int dgap_tty_tiocmget(struct tty_struct *tty, struct file *file)
+#endif
+{
+       struct channel_t *ch;
+       struct un_t *un;
+       int result = -EIO;
+       uchar mstat = 0;
+       ulong lock_flags;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return result;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return result;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return result;
+
+       DPR_IOCTL(("dgap_tty_tiocmget start\n"));
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       mstat = readb(&(ch->ch_bs->m_stat));
+        /* Append any outbound signals that might be pending... */
+        mstat |= ch->ch_mostat;
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       result = 0;
+
+       if (mstat & D_DTR(ch))
+               result |= TIOCM_DTR;
+       if (mstat & D_RTS(ch))
+               result |= TIOCM_RTS;
+       if (mstat & D_CTS(ch))
+               result |= TIOCM_CTS;
+       if (mstat & D_DSR(ch))
+               result |= TIOCM_DSR;
+       if (mstat & D_RI(ch))
+               result |= TIOCM_RI;
+       if (mstat & D_CD(ch))
+               result |= TIOCM_CD;
+
+       DPR_IOCTL(("dgap_tty_tiocmget finish\n"));
+
+       return result;
+}
+
+
+/*
+ * dgap_tty_tiocmset()
+ *
+ * Set modem signals, called by ld.
+ */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
+static int dgap_tty_tiocmset(struct tty_struct *tty,
+                unsigned int set, unsigned int clear)
+#else
+static int dgap_tty_tiocmset(struct tty_struct *tty, struct file *file,
+               unsigned int set, unsigned int clear)
+#endif
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       int ret = -EIO;
+       ulong lock_flags;
+       ulong lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return ret;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return ret;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return ret;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return ret;
+
+       DPR_IOCTL(("dgap_tty_tiocmset start\n"));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       if (set & TIOCM_RTS) {
+               ch->ch_mforce |= D_RTS(ch);
+               ch->ch_mval   |= D_RTS(ch);
+        }         
+
+       if (set & TIOCM_DTR) {
+               ch->ch_mforce |= D_DTR(ch);
+               ch->ch_mval   |= D_DTR(ch);
+        }         
+
+       if (clear & TIOCM_RTS) {
+               ch->ch_mforce |= D_RTS(ch);
+               ch->ch_mval   &= ~(D_RTS(ch));
+        }
+
+       if (clear & TIOCM_DTR) {
+               ch->ch_mforce |= D_DTR(ch);
+               ch->ch_mval   &= ~(D_DTR(ch));
+        }
+
+       dgap_param(tty);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_tiocmset finish\n"));
+
+       return (0);
+}
+
+
+
+/*
+ * dgap_tty_send_break()
+ *
+ * Send a Break, called by ld.
+ */
+static int dgap_tty_send_break(struct tty_struct *tty, int msec)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       int ret = -EIO;
+       ulong lock_flags;
+       ulong lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return ret;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return ret;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return ret;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return ret;
+
+       switch (msec) {
+       case -1:
+               msec = 0xFFFF;
+               break;
+       case 0:
+               msec = 1;
+               break;
+       default:
+               msec /= 10;
+               break;
+       }
+
+       DPR_IOCTL(("dgap_tty_send_break start 1.  %lx\n", jiffies));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+#if 0
+       dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+#endif
+       dgap_cmdw(ch, SBREAK, (u16) msec, 0);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_send_break finish\n"));
+
+       return (0);
+}
+
+
+
+
+/*
+ * dgap_tty_wait_until_sent()
+ *
+ * wait until data has been transmitted, called by ld.
+ */
+static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+       int rc;
+       rc = dgap_wait_for_drain(tty);
+       if (rc) {
+               DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+               return;
+       }
+       return;
+}
+
+
+
+/*
+ * dgap_send_xchar()
+ * 
+ * send a high priority character, called by ld.
+ */
+static void dgap_tty_send_xchar(struct tty_struct *tty, char c)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong lock_flags;
+       ulong lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_IOCTL(("dgap_tty_send_xchar start 1.  %lx\n", jiffies));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       /*
+        * This is technically what we should do.
+        * However, the NIST tests specifically want
+        * to see each XON or XOFF character that it
+        * sends, so lets just send each character
+        * by hand...
+        */
+#if 0
+       if (c == STOP_CHAR(tty)) {
+               dgap_cmdw(ch, RPAUSE, 0, 0);
+       }
+       else if (c == START_CHAR(tty)) {
+               dgap_cmdw(ch, RRESUME, 0, 0);
+       }
+       else {
+               dgap_wmove(ch, &c, 1);
+       }
+#else
+       dgap_wmove(ch, &c, 1);
+#endif
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_send_xchar finish\n"));
+
+       return;
+}
+
+
+
+
+/*
+ * Return modem signals to ld.
+ */
+static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value)
+{
+       int result = 0;
+       uchar mstat = 0;
+       ulong lock_flags;
+       int rc = 0;
+
+       DPR_IOCTL(("dgap_get_modem_info start\n"));
+
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return(-ENXIO);
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+
+       mstat = readb(&(ch->ch_bs->m_stat));
+       /* Append any outbound signals that might be pending... */
+       mstat |= ch->ch_mostat;
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       result = 0;
+
+       if (mstat & D_DTR(ch))
+               result |= TIOCM_DTR;
+       if (mstat & D_RTS(ch))
+               result |= TIOCM_RTS;
+       if (mstat & D_CTS(ch))
+               result |= TIOCM_CTS;
+       if (mstat & D_DSR(ch))
+               result |= TIOCM_DSR;
+       if (mstat & D_RI(ch))
+               result |= TIOCM_RI;
+       if (mstat & D_CD(ch))
+               result |= TIOCM_CD;
+
+       rc = put_user(result, value);
+
+       DPR_IOCTL(("dgap_get_modem_info finish\n"));
+       return(rc);
+}
+
+
+/*
+ * dgap_set_modem_info()
+ *
+ * Set modem signals, called by ld.
+ */
+static int dgap_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       int ret = -ENXIO;
+       unsigned int arg = 0;
+       ulong lock_flags;
+       ulong lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return ret;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return ret;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return ret;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return ret;
+
+       DPR_IOCTL(("dgap_set_modem_info() start\n"));
+
+       ret = get_user(arg, value);
+       if (ret) {
+               DPR_IOCTL(("dgap_set_modem_info %d ret: %x. finished.\n", __LINE__, ret));
+               return(ret);
+       }
+
+       DPR_IOCTL(("dgap_set_modem_info: command: %x arg: %x\n", command, arg));
+
+       switch (command) {
+       case TIOCMBIS:
+               if (arg & TIOCM_RTS) {
+                       ch->ch_mforce |= D_RTS(ch);
+                       ch->ch_mval   |= D_RTS(ch);
+               }
+
+               if (arg & TIOCM_DTR) {
+                       ch->ch_mforce |= D_DTR(ch);
+                       ch->ch_mval   |= D_DTR(ch);
+               }
+
+               break;
+
+       case TIOCMBIC:
+               if (arg & TIOCM_RTS) {
+                       ch->ch_mforce |= D_RTS(ch);
+                       ch->ch_mval   &= ~(D_RTS(ch));
+               }
+
+               if (arg & TIOCM_DTR) {
+                       ch->ch_mforce |= D_DTR(ch);
+                       ch->ch_mval   &= ~(D_DTR(ch));
+               }
+
+               break;
+
+        case TIOCMSET:
+               ch->ch_mforce = D_DTR(ch)|D_RTS(ch);
+
+               if (arg & TIOCM_RTS) {
+                       ch->ch_mval |= D_RTS(ch);
+               }
+               else {
+                       ch->ch_mval &= ~(D_RTS(ch));
+               }
+
+               if (arg & TIOCM_DTR) {
+                       ch->ch_mval |= (D_DTR(ch));
+               }
+               else {
+                       ch->ch_mval &= ~(D_DTR(ch));
+               }
+
+               break;
+
+       default:
+               return(-EINVAL);
+       }
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       dgap_param(tty);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_set_modem_info finish\n"));
+
+       return (0);
+}
+
+
+/*
+ * dgap_tty_digigeta() 
+ *
+ * Ioctl to get the information for ditty.
+ *
+ *
+ *
+ */
+static int dgap_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo)
+{
+       struct channel_t *ch;
+       struct un_t *un;
+       struct digi_t tmp;
+       ulong lock_flags;
+
+       if (!retinfo)
+               return (-EFAULT);
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return (-EFAULT);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (-EFAULT);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (-EFAULT);
+
+       memset(&tmp, 0, sizeof(tmp));
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+       memcpy(&tmp, &ch->ch_digi, sizeof(tmp));
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+               return (-EFAULT);
+
+       return (0);
+}
+
+
+/*
+ * dgap_tty_digiseta() 
+ *
+ * Ioctl to set the information for ditty.
+ *
+ *
+ *
+ */
+static int dgap_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       struct digi_t new_digi;
+       ulong   lock_flags = 0;
+       unsigned long lock_flags2;
+
+       DPR_IOCTL(("DIGI_SETA start\n"));
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return (-EFAULT);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (-EFAULT);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (-EFAULT);
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (-EFAULT);
+
+        if (copy_from_user(&new_digi, new_info, sizeof(struct digi_t))) {
+               DPR_IOCTL(("DIGI_SETA failed copy_from_user\n"));
+                return(-EFAULT);
+       }
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       memcpy(&ch->ch_digi, &new_digi, sizeof(struct digi_t));
+
+       if (ch->ch_digi.digi_maxcps < 1) 
+               ch->ch_digi.digi_maxcps = 1;
+
+       if (ch->ch_digi.digi_maxcps > 10000) 
+               ch->ch_digi.digi_maxcps = 10000;
+
+       if (ch->ch_digi.digi_bufsize < 10)
+               ch->ch_digi.digi_bufsize = 10;
+
+       if (ch->ch_digi.digi_maxchar < 1)
+               ch->ch_digi.digi_maxchar = 1;
+
+       if (ch->ch_digi.digi_maxchar > ch->ch_digi.digi_bufsize)
+               ch->ch_digi.digi_maxchar = ch->ch_digi.digi_bufsize;
+
+       if (ch->ch_digi.digi_onlen > DIGI_PLEN)
+               ch->ch_digi.digi_onlen = DIGI_PLEN;
+
+       if (ch->ch_digi.digi_offlen > DIGI_PLEN)
+               ch->ch_digi.digi_offlen = DIGI_PLEN;
+
+       dgap_param(tty);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("DIGI_SETA finish\n"));
+
+       return(0);
+}
+
+
+/*
+ * dgap_tty_digigetedelay() 
+ *
+ * Ioctl to get the current edelay setting.
+ *
+ *
+ *
+ */
+static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo)
+{
+       struct channel_t *ch;
+       struct un_t *un;
+       int tmp;
+       ulong lock_flags;
+
+       if (!retinfo)
+               return (-EFAULT);
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return (-EFAULT);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (-EFAULT);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (-EFAULT);
+
+       memset(&tmp, 0, sizeof(tmp));
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+       tmp = readw(&(ch->ch_bs->edelay));
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+               return (-EFAULT);
+
+       return (0);
+}
+
+
+/*
+ * dgap_tty_digisetedelay() 
+ *
+ * Ioctl to set the EDELAY setting
+ *
+ */
+static int dgap_tty_digisetedelay(struct tty_struct *tty, int __user *new_info)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       int new_digi;
+       ulong lock_flags;
+       ulong lock_flags2;
+
+       DPR_IOCTL(("DIGI_SETA start\n"));
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return (-EFAULT);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (-EFAULT);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (-EFAULT);
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (-EFAULT);
+
+        if (copy_from_user(&new_digi, new_info, sizeof(int))) {
+               DPR_IOCTL(("DIGI_SETEDELAY failed copy_from_user\n"));
+                return(-EFAULT);
+       }
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       writew((u16) new_digi, &(ch->ch_bs->edelay));
+
+       dgap_param(tty);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("DIGI_SETA finish\n"));
+
+       return(0);
+}
+
+
+/*
+ * dgap_tty_digigetcustombaud()
+ *
+ * Ioctl to get the current custom baud rate setting.
+ */
+static int dgap_tty_digigetcustombaud(struct tty_struct *tty, int __user *retinfo)
+{
+       struct channel_t *ch;
+       struct un_t *un;
+       int tmp;
+       ulong lock_flags;
+
+       if (!retinfo)
+               return (-EFAULT);
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return (-EFAULT);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (-EFAULT);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (-EFAULT);
+
+       memset(&tmp, 0, sizeof(tmp));
+
+       DGAP_LOCK(ch->ch_lock, lock_flags);
+       tmp = dgap_get_custom_baud(ch);
+       DGAP_UNLOCK(ch->ch_lock, lock_flags);
+
+       DPR_IOCTL(("DIGI_GETCUSTOMBAUD. Returning %d\n", tmp));
+
+       if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+               return (-EFAULT);
+
+       return (0);
+}
+
+
+/*
+ * dgap_tty_digisetcustombaud() 
+ *
+ * Ioctl to set the custom baud rate setting
+ */
+static int dgap_tty_digisetcustombaud(struct tty_struct *tty, int __user *new_info)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       uint new_rate;
+       ulong lock_flags;
+       ulong lock_flags2;
+
+       DPR_IOCTL(("DIGI_SETCUSTOMBAUD start\n"));
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return (-EFAULT);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (-EFAULT);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (-EFAULT);
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (-EFAULT);
+
+
+       if (copy_from_user(&new_rate, new_info, sizeof(unsigned int))) {
+               DPR_IOCTL(("DIGI_SETCUSTOMBAUD failed copy_from_user\n"));
+               return(-EFAULT);
+       }
+
+       if (bd->bd_flags & BD_FEP5PLUS) {
+
+               DPR_IOCTL(("DIGI_SETCUSTOMBAUD. Setting %d\n", new_rate));
+
+               DGAP_LOCK(bd->bd_lock, lock_flags);
+               DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+               ch->ch_custom_speed = new_rate;
+
+               dgap_param(tty);
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+       }
+
+       DPR_IOCTL(("DIGI_SETCUSTOMBAUD finish\n"));
+
+       return(0);
+}
+
+
+/*
+ * dgap_set_termios()
+ */
+static void dgap_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       unsigned long lock_flags;
+       unsigned long lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       ch->ch_c_cflag   = tty->termios->c_cflag;
+       ch->ch_c_iflag   = tty->termios->c_iflag;
+       ch->ch_c_oflag   = tty->termios->c_oflag;
+       ch->ch_c_lflag   = tty->termios->c_lflag;
+       ch->ch_startc    = tty->termios->c_cc[VSTART];
+       ch->ch_stopc     = tty->termios->c_cc[VSTOP];
+
+       dgap_carrier(ch);
+       dgap_param(tty);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+}
+
+
+static void dgap_tty_throttle(struct tty_struct *tty)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong   lock_flags;
+       ulong   lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+        
+        ch = un->un_ch;
+        if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+                return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_IOCTL(("dgap_tty_throttle start\n"));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       ch->ch_flags |= (CH_RXBLOCK);
+#if 1
+       dgap_cmdw(ch, RPAUSE, 0, 0);
+#endif
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_throttle finish\n"));
+}
+
+
+static void dgap_tty_unthrottle(struct tty_struct *tty)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong   lock_flags;
+       ulong   lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+        
+        ch = un->un_ch;
+        if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+                return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_IOCTL(("dgap_tty_unthrottle start\n"));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       ch->ch_flags &= ~(CH_RXBLOCK);
+
+#if 1
+       dgap_cmdw(ch, RRESUME, 0, 0);
+#endif
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_unthrottle finish\n"));
+}
+
+
+static void dgap_tty_start(struct tty_struct *tty)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong   lock_flags;
+       ulong   lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+        
+        ch = un->un_ch;
+        if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+                return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_IOCTL(("dgap_tty_start start\n"));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       dgap_cmdw(ch, RESUMETX, 0, 0);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_start finish\n"));
+}
+
+
+static void dgap_tty_stop(struct tty_struct *tty)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong   lock_flags;
+       ulong   lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+        
+        ch = un->un_ch;
+        if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+                return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_IOCTL(("dgap_tty_stop start\n"));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       dgap_cmdw(ch, PAUSETX, 0, 0);
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_stop finish\n"));
+}
+
+
+/* 
+ * dgap_tty_flush_chars()
+ *
+ * Flush the cook buffer
+ *
+ * Note to self, and any other poor souls who venture here:
+ *
+ * flush in this case DOES NOT mean dispose of the data.
+ * instead, it means "stop buffering and send it if you
+ * haven't already."  Just guess how I figured that out...   SRW 2-Jun-98
+ *
+ * It is also always called in interrupt context - JAR 8-Sept-99
+ */
+static void dgap_tty_flush_chars(struct tty_struct *tty)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong   lock_flags;
+       ulong   lock_flags2;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+        
+        ch = un->un_ch;
+        if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+                return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_IOCTL(("dgap_tty_flush_chars start\n"));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       /* TODO: Do something here */
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_flush_chars finish\n"));
+}
+
+
+
+/*
+ * dgap_tty_flush_buffer()
+ *              
+ * Flush Tx buffer (make in == out)
+ */
+static void dgap_tty_flush_buffer(struct tty_struct *tty)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       ulong   lock_flags;
+       ulong   lock_flags2;
+       u16     head = 0;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return;
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return;
+        
+        ch = un->un_ch;
+        if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+                return;
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return;
+
+       DPR_IOCTL(("dgap_tty_flush_buffer on port: %d start\n", ch->ch_portnum));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       ch->ch_flags &= ~CH_STOP;
+       head = readw(&(ch->ch_bs->tx_head));
+       dgap_cmdw(ch, FLUSHTX, (u16) head, 0);
+       dgap_cmdw(ch, RESUMETX, 0, 0);
+       if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
+               ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
+               wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+       }
+       if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
+               ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
+               wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+       }
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+       if (waitqueue_active(&tty->write_wait))
+               wake_up_interruptible(&tty->write_wait);
+       tty_wakeup(tty);
+
+       DPR_IOCTL(("dgap_tty_flush_buffer finish\n"));
+}
+
+
+
+/*****************************************************************************
+ *
+ * The IOCTL function and all of its helpers
+ *
+ *****************************************************************************/
+                        
+/*
+ * dgap_tty_ioctl()
+ *
+ * The usual assortment of ioctl's
+ */
+static int dgap_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd,
+               unsigned long arg)
+{
+       struct board_t *bd;
+       struct channel_t *ch;
+       struct un_t *un;
+       int rc;
+       u16     head = 0;
+       ulong   lock_flags = 0;
+       ulong   lock_flags2 = 0;
+       void __user *uarg = (void __user *) arg;
+
+       if (!tty || tty->magic != TTY_MAGIC)
+               return (-ENODEV);
+
+       un = tty->driver_data;
+       if (!un || un->magic != DGAP_UNIT_MAGIC)
+               return (-ENODEV);
+
+       ch = un->un_ch;
+       if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
+               return (-ENODEV);
+
+       bd = ch->ch_bd;
+       if (!bd || bd->magic != DGAP_BOARD_MAGIC)
+               return (-ENODEV);
+
+       DPR_IOCTL(("dgap_tty_ioctl start on port %d - cmd %s (%x), arg %lx\n", 
+               ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+       DGAP_LOCK(bd->bd_lock, lock_flags);
+       DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+       if (un->un_open_count <= 0) {
+               DPR_BASIC(("dgap_tty_ioctl - unit not open.\n"));
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(-EIO);
+       }
+
+       switch (cmd) {
+
+       /* Here are all the standard ioctl's that we MUST implement */
+
+       case TCSBRK:
+               /*
+                * TCSBRK is SVID version: non-zero arg --> no break  
+                * this behaviour is exploited by tcdrain().
+                *
+                * According to POSIX.1 spec (7.2.2.1.2) breaks should be
+                * between 0.25 and 0.5 seconds so we'll ask for something
+                * in the middle: 0.375 seconds.
+                */
+               rc = tty_check_change(tty);
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               if (rc) {
+                       return(rc);
+               }
+
+               rc = dgap_wait_for_drain(tty);
+
+               if (rc) {
+                       DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+                       return(-EINTR);
+               }
+
+               DGAP_LOCK(bd->bd_lock, lock_flags);
+               DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+               if(((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP)) {
+                       dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+               }
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n", 
+                       ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+                return(0);
+
+
+       case TCSBRKP:
+               /* support for POSIX tcsendbreak()
+
+                * According to POSIX.1 spec (7.2.2.1.2) breaks should be
+                * between 0.25 and 0.5 seconds so we'll ask for something
+                * in the middle: 0.375 seconds.
+                */
+               rc = tty_check_change(tty);
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               if (rc) {
+                       return(rc);
+               }
+
+               rc = dgap_wait_for_drain(tty);
+               if (rc) {
+                       DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+                       return(-EINTR);
+               }
+
+               DGAP_LOCK(bd->bd_lock, lock_flags);
+               DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+               dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n", 
+                       ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+               return(0);
+
+        case TIOCSBRK:
+               /*
+                * FEP5 doesn't support turning on a break unconditionally.
+                * The FEP5 device will stop sending a break automatically
+                * after the specified time value that was sent when turning on
+                * the break.
+                */
+               rc = tty_check_change(tty);
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               if (rc) {
+                       return(rc);
+               }
+
+               rc = dgap_wait_for_drain(tty);
+               if (rc) {
+                       DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+                       return(-EINTR);
+               }
+
+               DGAP_LOCK(bd->bd_lock, lock_flags);
+               DGAP_LOCK(ch->ch_lock, lock_flags2);
+
+               dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n", 
+                       ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+               return 0;
+                
+        case TIOCCBRK:
+               /*
+                * FEP5 doesn't support turning off a break unconditionally.
+                * The FEP5 device will stop sending a break automatically
+                * after the specified time value that was sent when turning on
+                * the break.
+                */
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return 0;
+
+       case TIOCGSOFTCAR:
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) arg);
+               return(rc);
+
+       case TIOCSSOFTCAR:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               rc = get_user(arg, (unsigned long __user *) arg);
+               if (rc)
+                       return(rc);
+
+               DGAP_LOCK(bd->bd_lock, lock_flags);
+               DGAP_LOCK(ch->ch_lock, lock_flags2);
+               tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
+               dgap_param(tty);
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               return(0);
+                        
+       case TIOCMGET:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                return(dgap_get_modem_info(ch, uarg));
+
+       case TIOCMBIS:
+       case TIOCMBIC:
+       case TIOCMSET:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(dgap_set_modem_info(tty, cmd, uarg));
+
+               /*
+                * Here are any additional ioctl's that we want to implement
+                */
+                        
+       case TCFLSH:  
+               /*
+                * The linux tty driver doesn't have a flush
+                * input routine for the driver, assuming all backed
+                * up data is in the line disc. buffers.  However,
+                * we all know that's not the case.  Here, we
+                * act on the ioctl, but then lie and say we didn't
+                * so the line discipline will process the flush
+                * also.
+                */   
+               rc = tty_check_change(tty);
+               if (rc) {
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       return(rc);
+               }
+
+               if ((arg == TCIFLUSH) || (arg == TCIOFLUSH)) {
+                       if (!(un->un_type == DGAP_PRINT)) {
+                               head = readw(&(ch->ch_bs->rx_head));
+                               writew(head, &(ch->ch_bs->rx_tail));
+                               writeb(0, &(ch->ch_bs->orun));
+                       }
+               }
+
+               if ((arg == TCOFLUSH) || (arg == TCIOFLUSH)) {
+                       ch->ch_flags &= ~CH_STOP;
+                       head = readw(&(ch->ch_bs->tx_head));
+                       dgap_cmdw(ch, FLUSHTX, (u16) head, 0 );
+                       dgap_cmdw(ch, RESUMETX, 0, 0);
+                       if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
+                               ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
+                               wake_up_interruptible(&ch->ch_tun.un_flags_wait);
+                       }
+                       if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
+                               ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
+                               wake_up_interruptible(&ch->ch_pun.un_flags_wait);
+                       }
+                       if (waitqueue_active(&tty->write_wait))
+                               wake_up_interruptible(&tty->write_wait);
+
+                       /* Can't hold any locks when calling tty_wakeup! */
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       tty_wakeup(tty);
+                       DGAP_LOCK(bd->bd_lock, lock_flags);
+                       DGAP_LOCK(ch->ch_lock, lock_flags2);
+               }                  
+
+               /* pretend we didn't recognize this IOCTL */  
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               DPR_IOCTL(("dgap_tty_ioctl (LINE:%d) finish on port %d - cmd %s (%x), arg %lx\n", 
+                       __LINE__, ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+               return(-ENOIOCTLCMD);
+
+#ifdef TIOCGETP
+       case TIOCGETP:
+#endif
+       case TCGETS:
+       case TCGETA:
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+               if (tty->ldisc->ops->ioctl) {
+#else
+               if (tty->ldisc.ops->ioctl) {
+#endif
+                       int retval = (-ENXIO);
+
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+                       if (tty->termios) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
+                               retval = ((tty->ldisc->ops->ioctl) (tty, file, cmd, arg));
+#else
+                               retval = ((tty->ldisc.ops->ioctl) (tty, file, cmd, arg));
+#endif
+                       }
+
+                       DPR_IOCTL(("dgap_tty_ioctl (LINE:%d) finish on port %d - cmd %s (%x), arg %lx\n", 
+                               __LINE__, ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+                       return(retval);
+               }
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               DPR_IOCTL(("dgap_tty_ioctl (LINE:%d) finish on port %d - cmd %s (%x), arg %lx\n", 
+                       __LINE__, ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+               return(-ENOIOCTLCMD);
+
+       case TCSETSF:
+       case TCSETSW:
+               /*
+                * The linux tty driver doesn't have a flush
+                * input routine for the driver, assuming all backed
+                * up data is in the line disc. buffers.  However,
+                * we all know that's not the case.  Here, we
+                * act on the ioctl, but then lie and say we didn't
+                * so the line discipline will process the flush
+                * also.
+                */
+               if (cmd == TCSETSF) {
+                       /* flush rx */
+                       ch->ch_flags &= ~CH_STOP;
+                       head = readw(&(ch->ch_bs->rx_head));
+                       writew(head, &(ch->ch_bs->rx_tail));
+               }
+
+               /* now wait for all the output to drain */
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               rc = dgap_wait_for_drain(tty);
+               if (rc) {
+                       DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+                       return(-EINTR);
+               }
+
+               DPR_IOCTL(("dgap_tty_ioctl finish on port %d - cmd %s (%x), arg %lx\n", 
+                       ch->ch_portnum, dgap_ioctl_name(cmd), cmd, arg));
+
+               /* pretend we didn't recognize this */
+               return(-ENOIOCTLCMD);
+
+       case TCSETAW:
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               rc = dgap_wait_for_drain(tty);
+               if (rc) {
+                       DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+                       return(-EINTR);
+               }
+
+               /* pretend we didn't recognize this */
+               return(-ENOIOCTLCMD);  
+
+       case TCXONC:
+               /*
+                * The Linux Line Discipline (LD) would do this for us if we
+                * let it, but we have the special firmware options to do this
+                * the "right way" regardless of hardware or software flow
+                * control so we'll do it outselves instead of letting the LD
+                * do it.
+                */
+               rc = tty_check_change(tty);
+               if (rc) {
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       return(rc);
+               }
+
+               DPR_IOCTL(("dgap_ioctl - in TCXONC - %d\n", cmd));
+               switch (arg) {
+
+               case TCOON:
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       dgap_tty_start(tty);
+                       return(0);
+               case TCOOFF:
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       dgap_tty_stop(tty);
+                       return(0);
+               case TCION:
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       /* Make the ld do it */
+                       return(-ENOIOCTLCMD);
+               case TCIOFF:
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       /* Make the ld do it */
+                       return(-ENOIOCTLCMD);
+               default:
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       return(-EINVAL);
+               }
+
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(-ENOIOCTLCMD);
+
+       case DIGI_GETA:
+               /* get information for ditty */
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(dgap_tty_digigeta(tty, uarg));
+
+       case DIGI_SETAW:
+       case DIGI_SETAF:
+
+               /* set information for ditty */
+               if (cmd == (DIGI_SETAW)) {
+
+                       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+                       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+                       rc = dgap_wait_for_drain(tty);
+                       if (rc) {
+                               DPR_IOCTL(("dgap_tty_ioctl - bad return: %d ", rc));
+                               return(-EINTR);
+                       }
+                       DGAP_LOCK(bd->bd_lock, lock_flags);
+                       DGAP_LOCK(ch->ch_lock, lock_flags2);
+               }
+               else {
+                       tty_ldisc_flush(tty);
+               }
+               /* fall thru */
+
+       case DIGI_SETA:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(dgap_tty_digiseta(tty, uarg));
+
+       case DIGI_GEDELAY:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(dgap_tty_digigetedelay(tty, uarg));
+
+       case DIGI_SEDELAY:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(dgap_tty_digisetedelay(tty, uarg));
+
+       case DIGI_GETCUSTOMBAUD:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(dgap_tty_digigetcustombaud(tty, uarg));
+
+       case DIGI_SETCUSTOMBAUD:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return(dgap_tty_digisetcustombaud(tty, uarg));
+
+       case DIGI_RESET_PORT:
+               dgap_firmware_reset_port(ch);
+               dgap_param(tty);
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+               return 0;
+
+       default:
+               DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+               DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+               DPR_IOCTL(("dgap_tty_ioctl - in default\n"));
+               DPR_IOCTL(("dgap_tty_ioctl end - cmd %s (%x), arg %lx\n", 
+                       dgap_ioctl_name(cmd), cmd, arg));
+
+               return(-ENOIOCTLCMD);
+       }
+
+       DGAP_UNLOCK(ch->ch_lock, lock_flags2);
+       DGAP_UNLOCK(bd->bd_lock, lock_flags);
+
+       DPR_IOCTL(("dgap_tty_ioctl end - cmd %s (%x), arg %lx\n", 
+               dgap_ioctl_name(cmd), cmd, arg));
+                        
+       return(0);
+}
diff --git a/drivers/staging/dgap/dgap_tty.h b/drivers/staging/dgap/dgap_tty.h
new file mode 100644 (file)
index 0000000..464a460
--- /dev/null
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+#ifndef __DGAP_TTY_H
+#define __DGAP_TTY_H
+
+#include "dgap_driver.h"
+
+int    dgap_tty_register(struct board_t *brd);
+
+int    dgap_tty_preinit(void);
+int     dgap_tty_init(struct board_t *);
+
+void   dgap_tty_post_uninit(void);
+void   dgap_tty_uninit(struct board_t *);
+
+void   dgap_carrier(struct channel_t *ch);
+void   dgap_input(struct channel_t *ch);
+
+
+#endif
diff --git a/drivers/staging/dgap/dgap_types.h b/drivers/staging/dgap/dgap_types.h
new file mode 100644 (file)
index 0000000..eca38c7
--- /dev/null
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+#ifndef __DGAP_TYPES_H
+#define __DGAP_TYPES_H
+
+#ifndef TRUE
+# define TRUE 1
+#endif
+
+#ifndef FALSE
+# define FALSE 0
+#endif
+
+/* Required for our shared headers! */
+typedef unsigned char          uchar;
+
+#endif
diff --git a/drivers/staging/dgap/digi.h b/drivers/staging/dgap/digi.h
new file mode 100644 (file)
index 0000000..651e2e5
--- /dev/null
@@ -0,0 +1,376 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: digi.h,v 1.1 2009/10/23 14:01:57 markh Exp $
+ *
+ *     NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
+ */
+
+#ifndef __DIGI_H
+#define __DIGI_H
+
+/************************************************************************
+ ***   Definitions for Digi ditty(1) command.
+ ************************************************************************/
+
+
+/*
+ * Copyright (c) 1988-96 Digi International Inc., All Rights Reserved.
+ */
+
+/************************************************************************
+ * This module provides application access to special Digi
+ * serial line enhancements which are not standard UNIX(tm) features.
+ ************************************************************************/
+
+#if !defined(TIOCMODG)
+
+#define        TIOCMODG        ('d'<<8) | 250          /* get modem ctrl state */
+#define        TIOCMODS        ('d'<<8) | 251          /* set modem ctrl state */
+
+#ifndef TIOCM_LE 
+#define                TIOCM_LE        0x01            /* line enable          */
+#define                TIOCM_DTR       0x02            /* data terminal ready  */
+#define                TIOCM_RTS       0x04            /* request to send      */
+#define                TIOCM_ST        0x08            /* secondary transmit   */
+#define                TIOCM_SR        0x10            /* secondary receive    */
+#define                TIOCM_CTS       0x20            /* clear to send        */
+#define                TIOCM_CAR       0x40            /* carrier detect       */
+#define                TIOCM_RNG       0x80            /* ring indicator       */
+#define                TIOCM_DSR       0x100           /* data set ready       */
+#define                TIOCM_RI        TIOCM_RNG       /* ring (alternate)     */
+#define                TIOCM_CD        TIOCM_CAR       /* carrier detect (alt) */
+#endif
+
+#endif
+
+#if !defined(TIOCMSET)
+#define        TIOCMSET        ('d'<<8) | 252          /* set modem ctrl state */
+#define        TIOCMGET        ('d'<<8) | 253          /* set modem ctrl state */
+#endif
+
+#if !defined(TIOCMBIC)
+#define        TIOCMBIC        ('d'<<8) | 254          /* set modem ctrl state */
+#define        TIOCMBIS        ('d'<<8) | 255          /* set modem ctrl state */
+#endif
+
+
+#if !defined(TIOCSDTR)
+#define        TIOCSDTR        ('e'<<8) | 0            /* set DTR              */
+#define        TIOCCDTR        ('e'<<8) | 1            /* clear DTR            */
+#endif
+
+/************************************************************************
+ * Ioctl command arguments for DIGI parameters.
+ ************************************************************************/
+#define DIGI_GETA      ('e'<<8) | 94           /* Read params          */
+
+#define DIGI_SETA      ('e'<<8) | 95           /* Set params           */
+#define DIGI_SETAW     ('e'<<8) | 96           /* Drain & set params   */
+#define DIGI_SETAF     ('e'<<8) | 97           /* Drain, flush & set params */
+
+#define DIGI_KME       ('e'<<8) | 98           /* Read/Write Host      */
+                                               /* Adapter Memory       */
+
+#define        DIGI_GETFLOW    ('e'<<8) | 99           /* Get startc/stopc flow */
+                                               /* control characters    */
+#define        DIGI_SETFLOW    ('e'<<8) | 100          /* Set startc/stopc flow */
+                                               /* control characters    */
+#define        DIGI_GETAFLOW   ('e'<<8) | 101          /* Get Aux. startc/stopc */
+                                               /* flow control chars    */
+#define        DIGI_SETAFLOW   ('e'<<8) | 102          /* Set Aux. startc/stopc */
+                                               /* flow control chars    */
+
+#define DIGI_GEDELAY   ('d'<<8) | 246          /* Get edelay */
+#define DIGI_SEDELAY   ('d'<<8) | 247          /* Set edelay */
+
+struct digiflow_t {
+       unsigned char   startc;                         /* flow cntl start char */
+       unsigned char   stopc;                          /* flow cntl stop char  */
+};
+
+
+#ifdef FLOW_2200
+#define        F2200_GETA      ('e'<<8) | 104          /* Get 2x36 flow cntl flags */
+#define        F2200_SETAW     ('e'<<8) | 105          /* Set 2x36 flow cntl flags */
+#define                F2200_MASK      0x03            /* 2200 flow cntl bit mask  */
+#define                FCNTL_2200      0x01            /* 2x36 terminal flow cntl  */
+#define                PCNTL_2200      0x02            /* 2x36 printer flow cntl   */
+#define        F2200_XON       0xf8
+#define        P2200_XON       0xf9
+#define        F2200_XOFF      0xfa
+#define        P2200_XOFF      0xfb
+
+#define        FXOFF_MASK      0x03                    /* 2200 flow status mask    */
+#define        RCVD_FXOFF      0x01                    /* 2x36 Terminal XOFF rcvd  */
+#define        RCVD_PXOFF      0x02                    /* 2x36 Printer XOFF rcvd   */
+#endif
+
+/************************************************************************
+ * Values for digi_flags 
+ ************************************************************************/
+#define DIGI_IXON      0x0001          /* Handle IXON in the FEP       */
+#define DIGI_FAST      0x0002          /* Fast baud rates              */
+#define RTSPACE                0x0004          /* RTS input flow control       */
+#define CTSPACE                0x0008          /* CTS output flow control      */
+#define DSRPACE                0x0010          /* DSR output flow control      */
+#define DCDPACE                0x0020          /* DCD output flow control      */
+#define DTRPACE                0x0040          /* DTR input flow control       */
+#define DIGI_COOK      0x0080          /* Cooked processing done in FEP */
+#define DIGI_FORCEDCD  0x0100          /* Force carrier                */
+#define        DIGI_ALTPIN     0x0200          /* Alternate RJ-45 pin config   */
+#define        DIGI_AIXON      0x0400          /* Aux flow control in fep      */
+#define        DIGI_PRINTER    0x0800          /* Hold port open for flow cntrl*/
+#define DIGI_PP_INPUT  0x1000          /* Change parallel port to input*/
+#define DIGI_DTR_TOGGLE 0x2000         /* Support DTR Toggle           */
+#define        DIGI_422        0x4000          /* for 422/232 selectable panel */
+#define DIGI_RTS_TOGGLE        0x8000          /* Support RTS Toggle           */
+
+/************************************************************************
+ * These options are not supported on the comxi.
+ ************************************************************************/
+#define        DIGI_COMXI      (DIGI_FAST|DIGI_COOK|DSRPACE|DCDPACE|DTRPACE)
+
+#define DIGI_PLEN      28              /* String length                */
+#define        DIGI_TSIZ       10              /* Terminal string len          */
+
+/************************************************************************
+ * Structure used with ioctl commands for DIGI parameters.
+ ************************************************************************/
+struct digi_t {
+       unsigned short  digi_flags;             /* Flags (see above)    */
+       unsigned short  digi_maxcps;            /* Max printer CPS      */
+       unsigned short  digi_maxchar;           /* Max chars in print queue */
+       unsigned short  digi_bufsize;           /* Buffer size          */
+       unsigned char   digi_onlen;             /* Length of ON string  */
+       unsigned char   digi_offlen;            /* Length of OFF string */
+       char            digi_onstr[DIGI_PLEN];  /* Printer on string    */
+       char            digi_offstr[DIGI_PLEN]; /* Printer off string   */
+       char            digi_term[DIGI_TSIZ];   /* terminal string      */
+};
+
+/************************************************************************
+ * KME definitions and structures.
+ ************************************************************************/
+#define        RW_IDLE         0       /* Operation complete                   */
+#define        RW_READ         1       /* Read Concentrator Memory             */
+#define        RW_WRITE        2       /* Write Concentrator Memory            */
+
+struct rw_t {
+       unsigned char   rw_req;         /* Request type                 */
+       unsigned char   rw_board;       /* Host Adapter board number    */
+       unsigned char   rw_conc;        /* Concentrator number          */
+       unsigned char   rw_reserved;    /* Reserved for expansion       */
+       unsigned long   rw_addr;        /* Address in concentrator      */
+       unsigned short  rw_size;        /* Read/write request length    */
+       unsigned char   rw_data[128];   /* Data to read/write           */
+};
+
+/***********************************************************************
+ * Shrink Buffer and Board Information definitions and structures.
+
+ ************************************************************************/
+                       /* Board type return codes */
+#define        PCXI_TYPE 1     /* Board type at the designated port is a PC/Xi */
+#define PCXM_TYPE 2     /* Board type at the designated port is a PC/Xm */
+#define        PCXE_TYPE 3     /* Board type at the designated port is a PC/Xe */
+#define        MCXI_TYPE 4     /* Board type at the designated port is a MC/Xi */
+#define COMXI_TYPE 5     /* Board type at the designated port is a COM/Xi */
+
+                        /* Non-Zero Result codes. */
+#define RESULT_NOBDFND 1 /* A Digi product at that port is not config installed */ 
+#define RESULT_NODESCT 2 /* A memory descriptor was not obtainable */ 
+#define RESULT_NOOSSIG 3 /* FEP/OS signature was not detected on the board */
+#define RESULT_TOOSML  4 /* Too small an area to shrink.  */
+#define RESULT_NOCHAN  5 /* Channel structure for the board was not found */
+
+struct shrink_buf_struct {
+       unsigned long   shrink_buf_vaddr;       /* Virtual address of board */
+       unsigned long   shrink_buf_phys;        /* Physical address of board */
+       unsigned long   shrink_buf_bseg;        /* Amount of board memory */
+       unsigned long   shrink_buf_hseg;        /* '186 Begining of Dual-Port */
+
+       unsigned long   shrink_buf_lseg;        /* '186 Begining of freed memory                                                */ 
+       unsigned long   shrink_buf_mseg;        /* Linear address from start of
+                                                  dual-port were freed memory
+                                                  begins, host viewpoint. */
+
+       unsigned long   shrink_buf_bdparam;     /* Parameter for xxmemon and
+                                                  xxmemoff */
+
+       unsigned long   shrink_buf_reserva;     /* Reserved */
+       unsigned long   shrink_buf_reservb;     /* Reserved */
+       unsigned long   shrink_buf_reservc;     /* Reserved */
+       unsigned long   shrink_buf_reservd;     /* Reserved */
+
+       unsigned char   shrink_buf_result;      /* Reason for call failing
+                                                  Zero is Good return */
+       unsigned char   shrink_buf_init;        /* Non-Zero if it caused an     
+                                                  xxinit call. */
+
+       unsigned char   shrink_buf_anports;     /* Number of async ports  */
+       unsigned char   shrink_buf_snports;     /* Number of sync  ports */
+       unsigned char   shrink_buf_type;        /* Board type 1 = PC/Xi,
+                                                             2 = PC/Xm,
+                                                             3 = PC/Xe  
+                                                             4 = MC/Xi  
+                                                             5 = COMX/i */
+       unsigned char   shrink_buf_card;        /* Card number */
+       
+};
+
+/************************************************************************
+ * Structure to get driver status information
+ ************************************************************************/
+struct digi_dinfo {
+       unsigned long   dinfo_nboards;          /* # boards configured  */
+       char            dinfo_reserved[12];     /* for future expansion */
+       char            dinfo_version[16];      /* driver version       */
+};
+
+#define        DIGI_GETDD      ('d'<<8) | 248          /* get driver info      */
+/************************************************************************
+ * Structure used with ioctl commands for per-board information
+ *
+ * physsize and memsize differ when board has "windowed" memory
+ ************************************************************************/
+struct digi_info {
+       unsigned long   info_bdnum;             /* Board number (0 based)  */
+       unsigned long   info_ioport;            /* io port address         */
+       unsigned long   info_physaddr;          /* memory address          */
+       unsigned long   info_physsize;          /* Size of host mem window */
+       unsigned long   info_memsize;           /* Amount of dual-port mem */
+                                               /* on board                */
+       unsigned short  info_bdtype;            /* Board type              */
+       unsigned short  info_nports;            /* number of ports         */
+       char            info_bdstate;           /* board state             */
+       char            info_reserved[7];       /* for future expansion    */
+};
+
+#define        DIGI_GETBD      ('d'<<8) | 249          /* get board info          */
+struct digi_stat {
+       unsigned int    info_chan;              /* Channel number (0 based)  */
+       unsigned int    info_brd;               /* Board number (0 based)  */
+       unsigned long   info_cflag;             /* cflag for channel       */
+       unsigned long   info_iflag;             /* iflag for channel       */
+       unsigned long   info_oflag;             /* oflag for channel       */
+       unsigned long   info_mstat;             /* mstat for channel       */
+       unsigned long   info_tx_data;           /* tx_data for channel       */
+       unsigned long   info_rx_data;           /* rx_data for channel       */
+       unsigned long   info_hflow;             /* hflow for channel       */
+       unsigned long   info_reserved[8];       /* for future expansion    */
+};
+
+#define        DIGI_GETSTAT    ('d'<<8) | 244          /* get board info          */
+/************************************************************************
+ *
+ * Structure used with ioctl commands for per-channel information
+ *
+ ************************************************************************/
+struct digi_ch {
+       unsigned long   info_bdnum;             /* Board number (0 based)  */
+       unsigned long   info_channel;           /* Channel index number    */
+       unsigned long   info_ch_cflag;          /* Channel cflag           */
+       unsigned long   info_ch_iflag;          /* Channel iflag           */
+       unsigned long   info_ch_oflag;          /* Channel oflag           */
+       unsigned long   info_chsize;            /* Channel structure size  */
+       unsigned long   info_sleep_stat;        /* sleep status            */
+       dev_t           info_dev;               /* device number           */
+       unsigned char   info_initstate;         /* Channel init state      */
+       unsigned char   info_running;           /* Channel running state   */
+       long            reserved[8];            /* reserved for future use */
+};
+
+/*
+* This structure is used with the DIGI_FEPCMD ioctl to 
+* tell the driver which port to send the command for.
+*/
+struct digi_cmd {
+       int     cmd;
+       int     word;
+       int     ncmds;
+       int     chan; /* channel index (zero based) */
+       int     bdid; /* board index (zero based) */
+};
+
+/*
+*  info_sleep_stat defines
+*/
+#define INFO_RUNWAIT   0x0001
+#define INFO_WOPEN     0x0002
+#define INFO_TTIOW     0x0004
+#define INFO_CH_RWAIT  0x0008
+#define INFO_CH_WEMPTY 0x0010
+#define INFO_CH_WLOW   0x0020
+#define INFO_XXBUF_BUSY 0x0040
+
+#define        DIGI_GETCH      ('d'<<8) | 245          /* get board info          */
+
+/* Board type definitions */
+
+#define        SUBTYPE         0007
+#define        T_PCXI          0000
+#define T_PCXM         0001
+#define T_PCXE         0002
+#define T_PCXR         0003
+#define T_SP           0004
+#define T_SP_PLUS      0005
+#      define T_HERC   0000
+#      define T_HOU    0001
+#      define T_LON    0002
+#      define T_CHA    0003
+#define FAMILY         0070
+#define T_COMXI                0000
+#define T_PCXX         0010
+#define T_CX           0020
+#define T_EPC          0030
+#define        T_PCLITE        0040
+#define        T_SPXX          0050
+#define        T_AVXX          0060
+#define T_DXB          0070
+#define T_A2K_4_8      0070
+#define BUSTYPE                0700
+#define T_ISABUS       0000
+#define T_MCBUS                0100
+#define        T_EISABUS       0200
+#define        T_PCIBUS        0400
+
+/* Board State Definitions */
+
+#define        BD_RUNNING      0x0
+#define        BD_REASON       0x7f
+#define        BD_NOTFOUND     0x1
+#define        BD_NOIOPORT     0x2
+#define        BD_NOMEM        0x3
+#define        BD_NOBIOS       0x4
+#define        BD_NOFEP        0x5
+#define        BD_FAILED       0x6
+#define BD_ALLOCATED   0x7
+#define BD_TRIBOOT     0x8
+#define        BD_BADKME       0x80
+
+#define DIGI_LOOPBACK        ('d'<<8) | 252            /* Enable/disable UART internal loopback */
+#define DIGI_SPOLL            ('d'<<8) | 254           /* change poller rate   */
+
+#define DIGI_SETCUSTOMBAUD     _IOW('e', 106, int)     /* Set integer baud rate */
+#define DIGI_GETCUSTOMBAUD     _IOR('e', 107, int)     /* Get integer baud rate */
+#define DIGI_RESET_PORT                ('e'<<8) | 93           /* Reset port           */
+
+#endif /* DIGI_H */
diff --git a/drivers/staging/dgap/downld.c b/drivers/staging/dgap/downld.c
new file mode 100644 (file)
index 0000000..57dfd6b
--- /dev/null
@@ -0,0 +1,798 @@
+/*
+ * Copyright 2003 Digi International (www.digi.com)
+ *     Scott H Kilau <Scott_Kilau at digi dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: downld.c,v 1.6 2009/01/14 14:10:54 markh Exp $
+ */
+
+/*
+** downld.c
+**
+**  This is the daemon that sends the fep, bios, and concentrator images
+**  from user space to the driver.
+** BUGS: 
+**  If the file changes in the middle of the download, you probably
+**     will get what you deserve.
+**
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/errno.h>
+
+#include "dgap_types.h"
+#include "digi.h"
+#include "dgap_fep5.h"
+
+#include "dgap_downld.h"
+
+#include <string.h>
+#include <malloc.h>
+#include <stddef.h>
+#include <unistd.h>
+
+char           *pgm;
+void           myperror();
+
+/*
+**  This structure is used to keep track of the diferent images available
+**  to give to the driver.  It is arranged so that the things that are
+**  constants or that have defaults are first inthe strucutre to simplify
+**  the table of initializers.
+*/
+struct image_info {
+       short   type;           /* bios, fep, conc */
+       short   family;         /* boards this applies to */
+       short   subtype;        /* subtype */
+       int     len;            /* size of image */
+       char    *image;         /* ioctl struct + image */
+       char    *name;
+       char    *fname;         /* filename of binary (i.e. "asfep.bin") */
+       char    *pathname;      /* pathname to this binary ("/etc/dgap/xrfep.bin"); */
+       time_t  mtime;          /* Last modification time */
+};
+
+#define IBIOS  0
+#define        IFEP    1
+#define        ICONC   2
+#define ICONFIG        3
+#define        IBAD    4
+
+#define DEFAULT_LOC "/lib/firmware/dgap/"
+
+struct image_info      *image_list;
+int                    nimages, count;
+
+struct image_info images[] = {
+{IBIOS, T_EPC,      SUBTYPE, 0, NULL, "EPC/X", "fxbios.bin", DEFAULT_LOC "fxbios.bin", 0 },
+{IFEP,  T_EPC,      SUBTYPE, 0, NULL, "EPC/X", "fxfep.bin", DEFAULT_LOC "fxfep.bin", 0 },
+{ICONC, T_EPC,      SUBTYPE, 0, NULL, "EPC/X", "fxcon.bin", DEFAULT_LOC "fxcon.bin", 0 },
+
+{IBIOS, T_CX,       SUBTYPE, 0, NULL, "C/X",   "cxbios.bin", DEFAULT_LOC "cxbios.bin", 0 },
+{IFEP,  T_CX,       SUBTYPE, 0, NULL, "C/X",   "cxhost.bin", DEFAULT_LOC "cxhost.bin", 0 },
+
+{IBIOS, T_CX,       T_PCIBUS, 0, NULL, "C/X PCI", "cxpbios.bin", DEFAULT_LOC "cxpbios.bin", 0 },
+{IFEP,  T_CX,       T_PCIBUS, 0, NULL, "C/X PCI", "cxpfep.bin", DEFAULT_LOC "cxpfep.bin", 0 },
+
+{ICONC, T_CX,       SUBTYPE, 0, NULL, "C/X",   "cxcon.bin", DEFAULT_LOC "cxcon.bin", 0 },
+{ICONC, T_CX,       SUBTYPE, 0, NULL, "C/X",   "ibmcxcon.bin", DEFAULT_LOC "ibmcxcon.bin", 0 },
+{ICONC, T_CX,       SUBTYPE, 0, NULL, "C/X",   "ibmencon.bin", DEFAULT_LOC "ibmencon.bin", 0 },
+
+{IBIOS, FAMILY,   T_PCXR, 0, NULL, "PCXR",     "xrbios.bin", DEFAULT_LOC "xrbios.bin", 0 },
+{IFEP,  FAMILY,   T_PCXR, 0,  NULL,  "PCXR",   "xrfep.bin", DEFAULT_LOC "xrfep.bin", 0  },
+
+{IBIOS, T_PCLITE,   SUBTYPE, 0, NULL, "X/em",  "sxbios.bin", DEFAULT_LOC "sxbios.bin", 0 },
+{IFEP,  T_PCLITE,   SUBTYPE, 0,  NULL,  "X/em",        "sxfep.bin", DEFAULT_LOC "sxfep.bin", 0  },
+
+{IBIOS, T_EPC,      T_PCIBUS, 0, NULL, "PCI",  "pcibios.bin", DEFAULT_LOC "pcibios.bin", 0 },
+{IFEP,  T_EPC,      T_PCIBUS, 0, NULL, "PCI",  "pcifep.bin", DEFAULT_LOC "pcifep.bin", 0 },
+{ICONFIG, 0,       0, 0, NULL,         NULL,   "dgap.conf",    "/etc/dgap.conf", 0 },
+
+/* IBAD/NULL entry indicating end-of-table */
+
+{IBAD,  0,     0, 0,  NULL,  NULL, NULL, NULL, 0 }
+
+} ;
+
+int    errorprint = 1;
+int    nodldprint = 1;
+int    debugflag;
+int    fd;
+
+struct downld_t *ip;   /* Image pointer in current image  */
+struct downld_t *dp;   /* conc. download */
+
+
+/*
+ * The same for either the FEP or the BIOS. 
+ *  Append the downldio header, issue the ioctl, then free
+ *  the buffer.  Not horribly CPU efficient, but quite RAM efficient.
+ */
+
+void squirt(int req_type, int bdid, struct image_info *ii)
+{
+       struct downldio *dliop;
+       int size_buf;
+       int sfd;
+       struct stat sb;
+
+       /*
+        * If this binary comes from a file, stat it to see how
+        * large it is. Yes, we intentionally do this each
+        * time for the binary may change between loads. 
+        */
+
+       if (ii->pathname) {
+               sfd = open(ii->pathname, O_RDONLY);
+
+               if (sfd < 0 ) {
+                       myperror(ii->pathname);
+                       goto squirt_end; 
+               }
+
+               if (fstat(sfd, &sb) == -1 ) {
+                       myperror(ii->pathname);
+                       goto squirt_end;
+               }
+
+               ii->len = sb.st_size ; 
+       }
+
+       size_buf = ii->len + sizeof(struct downldio);
+
+       /*
+        * This buffer will be freed at the end of this function.  It is
+        * not resilient and should be around only long enough for the d/l
+        * to happen.
+        */
+       dliop = (struct downldio *) malloc(size_buf);
+
+       if (dliop == NULL) {
+               fprintf(stderr,"%s: can't get %d bytes of memory; aborting\n", 
+                       pgm, size_buf);
+               exit (1);
+       }
+
+       /* Now, stick the image in fepimage.  This can come from either
+        *  the compiled-in image or from the filesystem.
+        */
+       if (ii->pathname)
+               read(sfd, dliop->image.fi.fepimage, ii->len);
+       else
+               memcpy(dliop ->image.fi.fepimage, ii->image, ii->len);
+
+       dliop->req_type = req_type;
+       dliop->bdid = bdid;
+
+       dliop->image.fi.len = ii->len;
+
+       if (debugflag)
+               printf("sending %d bytes of %s %s from %s\n",
+                       ii->len, 
+                       (ii->type == IFEP) ? "FEP" : (ii->type == IBIOS) ? "BIOS" : "CONFIG",
+                       ii->name ? ii->name : "",
+                       (ii->pathname) ? ii->pathname : "internal image" );
+
+       if (ioctl(fd, DIGI_DLREQ_SET, (char *) dliop) == -1) {
+               if(errorprint) {
+                       fprintf(stderr,
+                               "%s: warning - download ioctl failed\n",pgm);
+                       errorprint = 0;
+               }
+               sleep(2);
+       }
+
+squirt_end:
+
+       if (ii->pathname) {
+               close(sfd);
+       }
+       free(dliop);
+}
+
+
+/*
+ *  See if we need to reload the download image in core 
+ * 
+ */
+void consider_file_rescan(struct image_info *ii)
+{
+       int sfd ; 
+       int len ; 
+       struct stat     sb;
+
+       /* This operation only makes sense when we're working from a file */
+
+       if (ii->pathname) {
+
+               sfd = open (ii->pathname, O_RDONLY) ;
+               if (sfd < 0 ) {
+                       myperror(ii->pathname);
+                       exit(1) ;
+               }
+
+               if( fstat(sfd,&sb) == -1 ) {
+                       myperror(ii->pathname);
+                       exit(1);
+               }
+               
+               /* If the file hasn't changed since we last did this, 
+                * and we have not done a free() on the image, bail  
+                */
+               if (ii->image && (sb.st_mtime == ii->mtime))
+                       goto end_rescan;
+
+               ii->len = len = sb.st_size ; 
+
+               /* Record the timestamp of the file */
+               ii->mtime = sb.st_mtime;
+
+               /* image should be NULL unless there is an image malloced
+                * in already.  Before we malloc again, make sure we don't
+                * have a memory leak.
+                */
+               if ( ii->image ) {
+                       free( ii->image ); 
+                       /* ii->image = NULL; */ /* not necessary */
+               }
+
+               /* This image will be kept only long enough for the 
+                * download to happen.  After sending the last block, 
+                * it will be freed
+                */
+               ii->image = malloc(len) ;
+
+               if (ii->image == NULL) {
+                       fprintf(stderr,
+                               "%s: can't get %d bytes of memory; aborting\n",
+                                pgm, len);
+                       exit (1);
+               }
+
+               if (read(sfd, ii->image, len) < len) {
+                       fprintf(stderr,"%s: read error on %s; aborting\n", 
+                               pgm, ii->pathname);
+                       exit (1);
+               }
+
+end_rescan:
+               close(sfd);
+               
+       }
+}
+
+/*
+ * Scan for images to match the driver requests
+ */
+
+struct image_info * find_conc_image()
+{
+       int x ; 
+       struct image_info *i = NULL ; 
+
+       for ( x = 0; x < nimages; x++ ) {
+               i=&image_list[x];
+                               
+               if(i->type != ICONC)
+                       continue;
+
+               consider_file_rescan(i) ;
+
+               ip = (struct downld_t *) image_list[x].image;
+               if (ip == NULL) continue;
+
+               /*
+                * When I removed Clusterport, I kept only the code that I
+                * was SURE wasn't ClusterPort.  We may not need the next two
+                * lines of code.
+                */
+               if ((dp->dl_type != 'P' ) && ( ip->dl_srev == dp->dl_srev ))
+                       return i;
+       } 
+       return NULL ; 
+}
+
+
+int main(int argc, char **argv)
+{
+       struct downldio dlio;
+       int             offset, bsize;
+       int             x;
+       char            *down, *image, *fname;
+       struct image_info *ii;
+
+       pgm = argv[0];
+       dp = &dlio.image.dl;            /* conc. download */
+
+       while((argc > 2) && !strcmp(argv[1],"-d")) {
+               debugflag++ ;
+               argc-- ;
+               argv++ ;
+       }
+
+       if(argc < 2) {
+               fprintf(stderr,
+                       "usage: %s download-device [image-file] ...\n",
+                       pgm);
+               exit(1);
+       }
+
+
+
+       /*
+        * Daemonize, unless debugging is turned on.
+        */
+       if (debugflag == 0) {
+               switch (fork())
+               {
+               case 0:
+                       break;
+
+               case -1:
+                       return 1;
+
+               default:
+                       return 0;
+               }
+
+               setsid();
+
+               /*
+                * The child no longer needs "stdin", "stdout", or "stderr",
+                * and should not block processes waiting for them to close.
+                */
+               fclose(stdin);
+               fclose(stdout);
+               fclose(stderr);
+
+       }
+
+       while (1) {
+               if( (fd = open(argv[1], O_RDWR)) == -1 ) {
+                       sleep(1);
+               }
+               else
+                       break;
+       }
+
+       /*
+       ** create a list of images to search through when trying to match
+       ** requests from the driver.  Put images from the command line in
+       ** the list before built in images so that the command line images
+       ** can override the built in ones.
+       */
+       
+       /* allocate space for the list */
+
+       nimages = argc - 2;
+
+       /* count the number of default list entries */
+
+       for (count = 0; images[count].type != IBAD; ++count) ;
+
+       nimages += count;
+
+       /* Really should just remove the variable "image_list".... robertl */
+       image_list = images ; 
+          
+       /* get the images from the command line */
+       for(x = 2; x < argc; x++) {
+               int xx; 
+
+               /*
+                * strip off any leading path information for 
+                * determining file type 
+                */
+               if( (fname = strrchr(argv[x],'/')) == NULL)
+                       fname = argv[x];
+               else
+                       fname++;        /* skip the slash */
+
+               for (xx = 0; xx < count; xx++) {
+                       if (strcmp(fname, images[xx].fname) == 0 ) { 
+                               images[xx].pathname = argv[x];
+
+                               /* image should be NULL until */
+                               /* space is malloced */
+                               images[xx].image = NULL ;  
+                       }
+               }
+       }
+
+        sleep(3);
+       
+       /*
+       ** Endless loop: get a request from the fep, and service that request.
+       */
+       for(;;) {
+               /* get the request */
+               if (debugflag)
+                       printf("b4 get ioctl...");
+       
+               if (ioctl(fd,DIGI_DLREQ_GET, &dlio) == -1 ) {
+                       if (errorprint) {
+                               fprintf(stderr,
+                                       "%s: warning - download ioctl failed\n",
+                                       pgm);
+                               errorprint = 0;
+                       }
+                       sleep(2);
+               } else {
+                       if (debugflag)
+                               printf("dlio.req_type is %d bd %d\n",
+                                       dlio.req_type,dlio.bdid);
+       
+                       switch(dlio.req_type) {
+                       case DLREQ_BIOS:
+                               /*
+                               ** find the bios image for this type
+                               */
+                               for ( x = 0; x < nimages; x++ ) {
+                                       if(image_list[x].type != IBIOS)
+                                               continue;
+       
+                                       if ((dlio.image.fi.type & FAMILY) == 
+                                               image_list[x].family) {
+                                               
+                                               if ( image_list[x].family == T_CX   ) { 
+                                                       if ((dlio.image.fi.type & BUSTYPE) 
+                                                               == T_PCIBUS ) {
+                                                               if ( image_list[x].subtype 
+                                                                       == T_PCIBUS )
+                                                                       break;
+                                                       }
+                                                       else { 
+                                                               break;
+                                                       }
+                                               }
+                                               else if ( image_list[x].family == T_EPC ) {
+                                               /* If subtype of image is T_PCIBUS, it is */
+                                               /* a PCI EPC image, so the board must */
+                                               /* have bus type T_PCIBUS to match */
+                                                       if ((dlio.image.fi.type & BUSTYPE) 
+                                                               == T_PCIBUS ) {
+                                                               if ( image_list[x].subtype 
+                                                                       == T_PCIBUS )
+                                                                       break;
+                                                       }
+                                                       else { 
+                                                       /* NON PCI EPC doesn't use PCI image */
+                                                               if ( image_list[x].subtype 
+                                                                       != T_PCIBUS )
+                                                                       break;
+                                                       }
+                                               }
+                                               else
+                                                       break;
+                                       }
+                                       else if ((dlio.image.fi.type & SUBTYPE) == image_list[x].subtype) {
+                                               /* PCXR board will break out of the loop here */
+                                               if ( image_list[x].subtype == T_PCXR   ) { 
+                                                                       break;
+                                               }
+                                       }
+                               }
+       
+                               if ( x >= nimages) {
+                                       /*
+                                       ** no valid images exist
+                                       */
+                                       if(nodldprint) {
+                                               fprintf(stderr,
+                                               "%s: cannot find correct BIOS image\n",
+                                                       pgm);
+                                               nodldprint = 0;
+                                       }
+                                       dlio.image.fi.type = -1;
+                                       if (ioctl(fd, DIGI_DLREQ_SET, &dlio) == -1) {
+                                               if (errorprint) {
+                                                       fprintf(stderr,
+                                                       "%s: warning - download ioctl failed\n",
+                                                       pgm);
+                                                       errorprint = 0;
+                                               }
+                                               sleep(2);
+                                       }
+                                       break;
+                               }
+                               squirt(dlio.req_type, dlio.bdid, &image_list[x]);
+                               break ;
+       
+                       case DLREQ_FEP:
+                               /*
+                               ** find the fep image for this type
+                               */
+                               for ( x = 0; x < nimages; x++ ) {
+                                       if(image_list[x].type != IFEP)
+                                               continue;
+                                       if( (dlio.image.fi.type & FAMILY) == 
+                                               image_list[x].family ) {
+                                               if ( image_list[x].family == T_CX   ) { 
+                                                       /* C/X PCI board */
+                                                       if ((dlio.image.fi.type & BUSTYPE) 
+                                                               == T_PCIBUS ) {
+                                                               if ( image_list[x].subtype
+                                                                       == T_PCIBUS )
+                                                                       break;
+                                                       }
+                                                       else { 
+                                                       /* Regular CX */
+                                                               break;
+                                                       }
+                                               }
+                                               else if ( image_list[x].family == T_EPC   )  {
+                                               /* If subtype of image is T_PCIBUS, it is */
+                                               /* a PCI EPC image, so the board must */
+                                               /* have bus type T_PCIBUS to match */
+                                                       if ((dlio.image.fi.type & BUSTYPE) 
+                                                               == T_PCIBUS ) {
+                                                               if ( image_list[x].subtype 
+                                                                       == T_PCIBUS )
+                                                                       break;
+                                                       }
+                                                       else { 
+                                                       /* NON PCI EPC doesn't use PCI image */
+                                                               if ( image_list[x].subtype 
+                                                                       != T_PCIBUS )
+                                                                       break;
+                                                       }
+                                               }
+                                               else
+                                                       break;
+                                       }
+                                       else if ((dlio.image.fi.type & SUBTYPE) == image_list[x].subtype) {
+                                               /* PCXR board will break out of the loop here */
+                                               if ( image_list[x].subtype == T_PCXR   ) { 
+                                                                       break;
+                                               }
+                                       }
+                               }
+       
+                               if ( x >= nimages) {
+                                       /*
+                                       ** no valid images exist
+                                       */
+                                       if(nodldprint) {
+                                               fprintf(stderr,
+                                               "%s: cannot find correct FEP image\n",
+                                                       pgm);
+                                               nodldprint = 0;
+                                       }
+                                       dlio.image.fi.type=-1;
+                                       if( ioctl(fd,DIGI_DLREQ_SET,&dlio) == -1 ) {
+                                               if(errorprint) {
+                                                       fprintf(stderr,
+                                               "%s: warning - download ioctl failed\n",
+                                                               pgm);
+                                                       errorprint=0;
+                                               }
+                                               sleep(2);
+                                       }
+                                       break;
+                               }
+                               squirt(dlio.req_type, dlio.bdid, &image_list[x]);
+                               break;
+
+                       case DLREQ_DEVCREATE:
+                               {
+                                       char string[1024];
+#if 0
+                                       sprintf(string, "%s /proc/dgap/%d/mknod", DEFSHELL, dlio.bdid);
+#endif
+                                       sprintf(string, "%s /usr/sbin/dgap_updatedevs %d", DEFSHELL, dlio.bdid);
+                                       system(string);
+
+                                       if (debugflag)
+                                               printf("Created Devices.\n");
+                                       if (ioctl(fd, DIGI_DLREQ_SET, &dlio) == -1 ) {
+                                               if(errorprint) {
+                                                       fprintf(stderr, "%s: warning - DEVCREATE ioctl failed\n",pgm);
+                                                       errorprint = 0;
+                                               }
+                                               sleep(2);
+                                       }
+                                       if (debugflag)
+                                               printf("After ioctl set - Created Device.\n");
+                               }
+
+                               break;
+       
+                       case DLREQ_CONFIG:
+                               for ( x = 0; x < nimages; x++ ) {
+                                       if(image_list[x].type != ICONFIG)
+                                               continue;
+                                       else
+                                               break;
+                               }
+
+                               if ( x >= nimages) {
+                                       /*
+                                       ** no valid images exist
+                                       */
+                                       if(nodldprint) {
+                                               fprintf(stderr,
+                                               "%s: cannot find correct CONFIG image\n",
+                                                       pgm);
+                                               nodldprint = 0;
+                                       }
+                                       dlio.image.fi.type=-1;
+                                       if (ioctl(fd, DIGI_DLREQ_SET, &dlio) == -1 ) {
+                                               if(errorprint) {
+                                                       fprintf(stderr,
+                                               "%s: warning - download ioctl failed\n",
+                                                               pgm);
+                                                       errorprint=0;
+                                               }
+                                               sleep(2);
+                                       }
+                                       break;
+                               }
+
+                               squirt(dlio.req_type, dlio.bdid, &image_list[x]);
+                               break;
+
+                       case DLREQ_CONC:
+                               /*
+                               ** find the image needed for this download
+                               */
+                               if ( dp->dl_seq == 0 ) {
+                                       /*
+                                       ** find image for hardware rev range
+                                       */
+                                       for ( x = 0; x < nimages; x++ ) {
+                                               ii=&image_list[x];
+               
+                                               if(image_list[x].type != ICONC)
+                                                       continue;
+               
+                                               consider_file_rescan(ii) ;
+               
+                                               ip = (struct downld_t *) image_list[x].image;
+                                               if (ip == NULL) continue;
+               
+                                               /*
+                                                * When I removed Clusterport, I kept only the
+                                                * code that I was SURE wasn't ClusterPort.
+                                                * We may not need the next four lines of code.
+                                                */
+
+                                               if ((dp->dl_type != 'P' ) &&
+                                                (ip->dl_lrev <= dp->dl_lrev ) && 
+                                                ( dp->dl_lrev <= ip->dl_hrev))
+                                                       break;
+                                       }
+                                   
+                                       if ( x >= nimages ) {
+                                               /*
+                                               ** No valid images exist
+                                               */
+                                               if(nodldprint) {
+                                                       fprintf(stderr,
+                                               "%s: cannot find correct download image %d\n",
+                                                               pgm, dp->dl_lrev);
+                                                       nodldprint=0;
+                                               }
+                                               continue;
+                                       }
+                                   
+                               } else {
+                                       /*
+                                       ** find image version required
+                                       */
+                                       if ((ii = find_conc_image()) == NULL ) {
+                                               /*
+                                               ** No valid images exist
+                                               */
+                                               fprintf(stderr,
+                                               "%s: can't find rest of download image??\n",
+                                                       pgm);
+                                               continue;
+                                       }
+                               }
+                       
+                               /*
+                               ** download block of image
+                               */
+                       
+                               offset = 1024 * dp->dl_seq;
+                               
+                               /*
+                               ** test if block requested within image
+                               */
+                               if ( offset < ii->len ) { 
+       
+                                       /*
+                                       ** if it is, determine block size, set segment,
+                                       ** set size, set pointers, and copy block
+                                       */
+                                       if (( bsize = ii->len - offset ) > 1024 )
+                                               bsize = 1024;
+                                   
+                                       /*
+                                       ** copy image version info to download area
+                                       */
+                                       dp->dl_srev = ip->dl_srev;
+                                       dp->dl_lrev = ip->dl_lrev;
+                                       dp->dl_hrev = ip->dl_hrev;
+                                   
+                                       dp->dl_seg = (64 * dp->dl_seq) + ip->dl_seg;
+                                       dp->dl_size = bsize;
+                                   
+                                       down = (char *)&dp->dl_data[0];
+                                       image = (char *)((char *)ip + offset);
+       
+                                       memcpy(down, image, bsize);
+                               } 
+                               else {
+                                       /*
+                                       ** Image has been downloaded, set segment and
+                                       ** size to indicate no more blocks
+                                       */
+                                       dp->dl_seg = ip->dl_seg;
+                                       dp->dl_size = 0;
+       
+                                       /* Now, we can release the concentrator */
+                                       /* image from memory if we're running  */
+                                       /* from filesystem images */
+               
+                                       if (ii->pathname)
+                                               if (ii->image) {
+                                                       free(ii->image);
+                                                       ii->image = NULL ; 
+                                               } 
+                               }
+                       
+                               if (debugflag)
+                                               printf(
+                                               "sending conc dl section %d to %s from %s\n",
+                                                       dp->dl_seq, ii->name,
+                                               ii->pathname ? ii->pathname : "Internal Image");
+               
+                               if (ioctl(fd, DIGI_DLREQ_SET, &dlio) == -1 ) {
+                                       if (errorprint) {
+                                               fprintf(stderr,
+                                               "%s: warning - download ioctl failed\n",
+                                                       pgm);
+                                               errorprint=0;
+                                       }
+                                       sleep(2);
+                               }
+                               break;
+                       } /* switch */
+               }
+               if (debugflag > 1) {
+                       printf("pausing: "); fflush(stdout);
+                       fflush(stdin);
+                       while(getchar() != '\n');
+                               printf("continuing\n");
+               }
+       }
+}
+
+/*
+** myperror()
+**
+**  Same as normal perror(), but places the program name at the begining
+**  of the message.
+*/
+void myperror(char *s)
+{
+       fprintf(stderr,"%s: %s: %s.\n",pgm, s, strerror(errno));
+}