i386/linux-2.3.21/drivers/isdn/avmb1/b1isa.c

   1 /*
   2  * $Id: b1isa.c,v 1.4 1999/08/22 20:26:24 calle Exp $
   3  *
   4  * Module for AVM B1 ISA-card.
   5  *
   6  * (c) Copyright 1999 by Carsten Paeth (calle@calle.in-berlin.de)
   7  *
   8  * $Log: b1isa.c,v $
   9  * Revision 1.4  1999/08/22 20:26:24  calle
  10  * backported changes from kernel 2.3.14:
  11  * - several #include "config.h" gone, others come.
  12  * - "struct device" changed to "struct net_device" in 2.3.14, added a
  13  *   define in isdn_compat.h for older kernel versions.
  14  *
  15  * Revision 1.3  1999/07/09 15:05:40  keil
  16  * compat.h is now isdn_compat.h
  17  *
  18  * Revision 1.2  1999/07/05 15:09:49  calle
  19  * - renamed "appl_release" to "appl_released".
  20  * - version und profile data now cleared on controller reset
  21  * - extended /proc interface, to allow driver and controller specific
  22  *   informations to include by driver hackers.
  23  *
  24  * Revision 1.1  1999/07/01 15:26:27  calle
  25  * complete new version (I love it):
  26  * + new hardware independed "capi_driver" interface that will make it easy to:
  27  *   - support other controllers with CAPI-2.0 (i.e. USB Controller)
  28  *   - write a CAPI-2.0 for the passive cards
  29  *   - support serial link CAPI-2.0 boxes.
  30  * + wrote "capi_driver" for all supported cards.
  31  * + "capi_driver" (supported cards) now have to be configured with
  32  *   make menuconfig, in the past all supported cards where included
  33  *   at once.
  34  * + new and better informations in /proc/capi/
  35  * + new ioctl to switch trace of capi messages per controller
  36  *   using "avmcapictrl trace [contr] on|off|...."
  37  * + complete testcircle with all supported cards and also the
  38  *   PCMCIA cards (now patch for pcmcia-cs-3.0.13 needed) done.
  39  *
  40  *
  41  */
  42
  43 #include <linux/module.h>
  44 #include <linux/kernel.h>
  45 #include <linux/skbuff.h>
  46 #include <linux/delay.h>
  47 #include <linux/mm.h>
  48 #include <linux/interrupt.h>
  49 #include <linux/ioport.h>
  50 #include <linux/capi.h>
  51 #include <asm/io.h>
  52 #include <linux/isdn_compat.h>
  53 #include "capicmd.h"
  54 #include "capiutil.h"
  55 #include "capilli.h"
  56 #include "avmcard.h"
  57
  58 static char *revision = "$Revision: 1.4 $";
  59
  60 /* ------------------------------------------------------------- */
  61
  62 MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
  63
  64 /* ------------------------------------------------------------- */
  65
  66 static struct capi_driver_interface *di;
  67
  68 /* ------------------------------------------------------------- */
  69
  70 static void b1isa_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
  71 {
  72         avmcard *card;
  73
  74         card = (avmcard *) devptr;
  75
  76         if (!card) {
  77                 printk(KERN_WARNING "b1_interrupt: wrong device\n");
  78                 return;
  79         }
  80         if (card->interrupt) {
  81                 printk(KERN_ERR "b1_interrupt: reentering interrupt hander (%s)\n", card->name);
  82                 return;
  83         }
  84
  85         card->interrupt = 1;
  86
  87         b1_handle_interrupt(card);
  88
  89         card->interrupt = 0;
  90 }
  91 /* ------------------------------------------------------------- */
  92
  93 static void b1isa_remove_ctr(struct capi_ctr *ctrl)
  94 {
  95         avmcard *card = (avmcard *)(ctrl->driverdata);
  96         unsigned int port = card->port;
  97
  98         b1_reset(port);
  99         b1_reset(port);
 100
 101         di->detach_ctr(ctrl);
 102         free_irq(card->irq, card);
 103         release_region(card->port, AVMB1_PORTLEN);
 104         kfree(card);
 105
 106         MOD_DEC_USE_COUNT;
 107 }
 108
 109 /* ------------------------------------------------------------- */
 110
 111 static int b1isa_add_card(struct capi_driver *driver, struct capicardparams *p)
 112 {
 113         avmcard *card;
 114         int retval;
 115
 116         card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
 117
 118         if (!card) {
 119                 printk(KERN_WARNING "b1isa: no memory.\n");
 120                 return -ENOMEM;
 121         }
 122         memset(card, 0, sizeof(avmcard));
 123         sprintf(card->name, "b1isa-%x", p->port);
 124         card->port = p->port;
 125         card->irq = p->irq;
 126         card->cardtype = avm_b1isa;
 127
 128         if (check_region(card->port, AVMB1_PORTLEN)) {
 129                 printk(KERN_WARNING
 130                        "b1isa: ports 0x%03x-0x%03x in use.\n",
 131                        card->port, card->port + AVMB1_PORTLEN);
 132                 kfree(card);
 133                 return -EBUSY;
 134         }
 135         if (b1_irq_table[card->irq & 0xf] == 0) {
 136                 printk(KERN_WARNING "b1isa: irq %d not valid.\n", card->irq);
 137                 kfree(card);
 138                 return -EINVAL;
 139         }
 140         if (   card->port != 0x150 && card->port != 0x250
 141             && card->port != 0x300 && card->port != 0x340) {
 142                 printk(KERN_WARNING "b1isa: illegal port 0x%x.\n", card->port);
 143                 kfree(card);
 144                 return -EINVAL;
 145         }
 146         b1_reset(card->port);
 147         if ((retval = b1_detect(card->port, card->cardtype)) != 0) {
 148                 printk(KERN_NOTICE "b1isa: NO card at 0x%x (%d)\n",
 149                                         card->port, retval);
 150                 kfree(card);
 151                 return -EIO;
 152         }
 153         b1_reset(card->port);
 154
 155         request_region(p->port, AVMB1_PORTLEN, card->name);
 156
 157         retval = request_irq(card->irq, b1isa_interrupt, 0, card->name, card);
 158         if (retval) {
 159                 printk(KERN_ERR "b1isa: unable to get IRQ %d.\n", card->irq);
 160                 release_region(card->port, AVMB1_PORTLEN);
 161                 kfree(card);
 162                 return -EBUSY;
 163         }
 164
 165         card->ctrl = di->attach_ctr(driver, card->name, card);
 166         if (!card->ctrl) {
 167                 printk(KERN_ERR "b1isa: attach controller failed.\n");
 168                 free_irq(card->irq, card);
 169                 release_region(card->port, AVMB1_PORTLEN);
 170                 kfree(card);
 171                 return -EBUSY;
 172         }
 173
 174         MOD_INC_USE_COUNT;
 175         return 0;
 176 }
 177
 178 static char *b1isa_procinfo(struct capi_ctr *ctrl)
 179 {
 180         avmcard *card = (avmcard *)(ctrl->driverdata);
 181         if (!card)
 182                 return "";
 183         sprintf(card->infobuf, "%s %s 0x%x %d",
 184                 card->cardname[0] ? card->cardname : "-",
 185                 card->version[VER_DRIVER] ? card->version[VER_DRIVER] : "-",
 186                 card->port, card->irq
 187                 );
 188         return card->infobuf;
 189 }
 190
 191 /* ------------------------------------------------------------- */
 192
 193 static struct capi_driver b1isa_driver = {
 194     "b1isa",
 195     "0.0",
 196     b1_load_firmware,
 197     b1_reset_ctr,
 198     b1isa_remove_ctr,
 199     b1_register_appl,
 200     b1_release_appl,
 201     b1_send_message,
 202
 203     b1isa_procinfo,
 204     b1ctl_read_proc,
 205     0,  /* use standard driver_read_proc */
 206
 207     b1isa_add_card,
 208 };
 209
 210 #ifdef MODULE
 211 #define b1isa_init init_module
 212 void cleanup_module(void);
 213 #endif
 214
 215 int b1isa_init(void)
 216 {
 217         struct capi_driver *driver = &b1isa_driver;
 218         char *p;
 219
 220         if ((p = strchr(revision, ':'))) {
 221                 strncpy(driver->revision, p + 1, sizeof(driver->revision));
 222                 p = strchr(driver->revision, '$');
 223                 *p = 0;
 224         }
 225
 226         printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
 227
 228         di = attach_capi_driver(driver);
 229
 230         if (!di) {
 231                 printk(KERN_ERR "%s: failed to attach capi_driver\n",
 232                                 driver->name);
 233                 return -EIO;
 234         }
 235         return 0;
 236 }
 237
 238 #ifdef MODULE
 239 void cleanup_module(void)
 240 {
 241     detach_capi_driver(&b1isa_driver);
 242 }
 243 #endif