+++ /dev/null
-/*
- * 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
- */
-long dgap_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- 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 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;
-}
projects / platform / kernel / linux-exynos.git / commitdiff