* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
- *************************************************************************
- *
* Driver includes
- *
- *************************************************************************/
+ */
#ifndef __DGNC_DRIVER_H
#define __DGNC_DRIVER_H
#include "digi.h" /* Digi specific ioctl header */
#include "dgnc_sysfs.h" /* Support for SYSFS */
-/*************************************************************************
- *
- * Driver defines
- *
- *************************************************************************/
+/* Driver defines */
/* Driver identification and error statments */
-#define PROCSTR "dgnc" /* /proc entries */
-#define DEVSTR "/dev/dg/dgnc" /* /dev entries */
-#define DRVSTR "dgnc" /* Driver name string */
-#define DG_PART "40002369_F" /* RPM part number */
+#define PROCSTR "dgnc" /* /proc entries */
+#define DEVSTR "/dev/dg/dgnc" /* /dev entries */
+#define DRVSTR "dgnc" /* Driver name string */
+#define DG_PART "40002369_F" /* RPM part number */
#define TRC_TO_CONSOLE 1
#define PORT_NUM(dev) ((dev) & 0x7f)
#define IS_PRINT(dev) (((dev) & 0xff) >= 0x80)
-/* MAX number of stop characters we will send
+/*
+ *MAX number of stop characters we will send
* when our read queue is getting full
*/
#define MAX_STOPS_SENT 5
#define _POSIX_VDISABLE '\0'
#endif
-/*
- * All the possible states the driver can be while being loaded.
- */
+/* All the possible states the driver can be while being loaded. */
+
enum {
DRIVER_INITIALIZED = 0,
DRIVER_READY
};
-/*
- * All the possible states the board can be while booting up.
- */
+/* All the possible states the board can be while booting up. */
+
enum {
BOARD_FAILED = 0,
BOARD_FOUND,
BOARD_READY
};
-/*************************************************************************
- *
- * Structures and closely related defines.
- *
- *************************************************************************/
+/* Structures and closely related defines. */
struct dgnc_board;
struct channel_t;
-/************************************************************************
- * Per board operations structure *
- ************************************************************************/
+/* Per board operations structure */
+
struct board_ops {
void (*tasklet)(unsigned long data);
irqreturn_t (*intr)(int irq, void *voidbrd);
void (*send_immediate_char)(struct channel_t *ch, unsigned char);
};
-/************************************************************************
- * Device flag definitions for bd_flags.
- ************************************************************************/
+/* Device flag definitions for bd_flags. */
+
#define BD_IS_PCI_EXPRESS 0x0001 /* Is a PCI Express board */
-/*
- * Per-board information
- */
+/* Per-board information */
+
struct dgnc_board {
- int magic; /* Board Magic number. */
+ int magic; /* Board Magic number. */
int boardnum; /* Board number: 0-32 */
int type; /* Type of board */
};
-/************************************************************************
- * 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 */
+/* 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_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 */
+#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.
- ************************************************************************/
+/* Structure for terminal or printer unit. */
struct un_t {
- int magic; /* Unit Magic Number. */
+ int magic; /* Unit Magic Number. */
struct channel_t *un_ch;
ulong un_time;
uint un_type;
- uint un_open_count; /* Counter of opens to port */
- struct tty_struct *un_tty;/* Pointer to unit tty structure */
- uint un_flags; /* Unit flags */
+ uint un_open_count; /* Counter of opens to port */
+ struct tty_struct *un_tty; /* Pointer to unit tty structure */
+ uint un_flags; /* Unit flags */
wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
- uint un_dev; /* Minor device number */
+ uint un_dev; /* Minor device number */
struct device *un_sysfs;
};
-/************************************************************************
- * Device flag definitions for ch_flags.
- ************************************************************************/
-#define CH_PRON 0x0001 /* Printer on string */
-#define CH_STOP 0x0002 /* Output is stopped */
-#define CH_STOPI 0x0004 /* Input is stopped */
-#define CH_CD 0x0008 /* Carrier is present */
-#define CH_FCAR 0x0010 /* Carrier forced on */
-#define CH_HANGUP 0x0020 /* Hangup received */
-
-#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */
-#define CH_OPENING 0x0080 /* Port in fragile open state */
-#define CH_CLOSING 0x0100 /* Port in fragile close state */
-#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */
-#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */
-#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */
-#define CH_BREAK_SENDING 0x1000 /* Break is being sent */
-#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */
+/* Device flag definitions for ch_flags. */
+#define CH_PRON 0x0001 /* Printer on string */
+#define CH_STOP 0x0002 /* Output is stopped */
+#define CH_STOPI 0x0004 /* Input is stopped */
+#define CH_CD 0x0008 /* Carrier is present */
+#define CH_FCAR 0x0010 /* Carrier forced on */
+#define CH_HANGUP 0x0020 /* Hangup received */
+
+#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */
+#define CH_OPENING 0x0080 /* Port in fragile open state */
+#define CH_CLOSING 0x0100 /* Port in fragile close state */
+#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */
+#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */
+#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */
+#define CH_BREAK_SENDING 0x1000 /* Break is being sent */
+#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */
#define CH_BAUD0 0x08000 /* Used for checking B0 transitions */
-#define CH_FORCED_STOP 0x20000 /* Output is forcibly stopped */
-#define CH_FORCED_STOPI 0x40000 /* Input is forcibly stopped */
+#define CH_FORCED_STOP 0x20000 /* Output is forcibly stopped */
+#define CH_FORCED_STOPI 0x40000 /* Input is forcibly stopped */
/* Our Read/Error/Write queue sizes */
#define RQUEUEMASK 0x1FFF /* 8 K - 1 */
#define EQUEUESIZE RQUEUESIZE
#define WQUEUESIZE (WQUEUEMASK + 1)
-/************************************************************************
- * Channel information structure.
- ************************************************************************/
+/* Channel information structure. */
struct channel_t {
- int magic; /* Channel Magic Number */
- struct dgnc_board *ch_bd; /* Board structure pointer */
+ int magic; /* Channel Magic Number */
+ struct dgnc_board *ch_bd; /* Board structure pointer */
struct digi_t ch_digi; /* Transparent Print structure */
- struct un_t ch_tun; /* Terminal unit info */
- struct un_t ch_pun; /* Printer unit info */
+ 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;
- uint ch_portnum; /* Port number, 0 offset. */
- uint ch_open_count; /* open count */
- uint ch_flags; /* Channel flags */
+ uint ch_portnum; /* Port number, 0 offset. */
+ uint ch_open_count; /* open count */
+ uint ch_flags; /* Channel flags */
ulong ch_close_delay; /* How long we should
* drop RTS/DTR for
*/
- ulong ch_cpstime; /* Time for CPS calculations */
+ ulong 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 */
- unsigned char ch_stopc; /* Stop character */
- unsigned char ch_startc; /* Start character */
+ 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 */
+ unsigned char ch_stopc; /* Stop character */
+ unsigned char ch_startc; /* Start character */
uint ch_old_baud; /* Cache of the current baud */
uint ch_custom_speed;/* Custom baud, if set */
};
-/*
- * Our Global Variables.
- */
+/* Our Global Variables. */
+
extern uint dgnc_major; /* Our driver/mgmt major */
extern int dgnc_poll_tick; /* Poll interval - 20 ms */
extern spinlock_t dgnc_global_lock; /* Driver global spinlock */
projects / platform / kernel / linux-rpi3.git / commitdiff