i386/linux/linux-2.3.21/drivers/isdn/avmb1/b1pcmcia.c

   1 /*
   2  * $Id: b1pcmcia.c,v 1.4 1999/08/22 20:26:26 calle Exp $
   3  *
   4  * Module for AVM B1/M1/M2 PCMCIA-card.
   5  *
   6  * (c) Copyright 1999 by Carsten Paeth (calle@calle.in-berlin.de)
   7  *
   8  * $Log: b1pcmcia.c,v $
   9  * Revision 1.4  1999/08/22 20:26:26  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 15:05:41  keil
  16  * compat.h is now isdn_compat.h
  17  *
  18  * Revision 1.2  1999/07/05 15:09:51  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 15:26:30  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 <asm/io.h>
  51 #include <linux/capi.h>
  52 #include <linux/b1pcmcia.h>
  53 #include <linux/isdn_compat.h>
  54 #include "capicmd.h"
  55 #include "capiutil.h"
  56 #include "capilli.h"
  57 #include "avmcard.h"
  58
  59 static char *revision = "$Revision: 1.4 $";
  60
  61 /* ------------------------------------------------------------- */
  62
  63 MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
  64
  65 /* ------------------------------------------------------------- */
  66
  67 static struct capi_driver_interface *di;
  68
  69 /* ------------------------------------------------------------- */
  70
  71 static void b1pcmcia_interrupt(int interrupt, void *devptr, struct pt_regs *regs)
  72 {
  73         avmcard *card;
  74
  75         card = (avmcard *) devptr;
  76
  77         if (!card) {
  78                 printk(KERN_WARNING "b1_interrupt: wrong device\n");
  79                 return;
  80         }
  81         if (card->interrupt) {
  82                 printk(KERN_ERR "b1_interrupt: reentering interrupt hander (%s)\n", card->name);
  83                 return;
  84         }
  85
  86         card->interrupt = 1;
  87
  88         b1_handle_interrupt(card);
  89
  90         card->interrupt = 0;
  91 }
  92 /* ------------------------------------------------------------- */
  93
  94 static void b1pcmcia_remove_ctr(struct capi_ctr *ctrl)
  95 {
  96         avmcard *card = (avmcard *)(ctrl->driverdata);
  97         unsigned int port = card->port;
  98
  99         b1_reset(port);
 100         b1_reset(port);
 101
 102         di->detach_ctr(ctrl);
 103         free_irq(card->irq, card);
 104         /* io addrsses managent by CardServices
 105          * release_region(card->port, AVMB1_PORTLEN);
 106          */
 107         kfree(card);
 108
 109         MOD_DEC_USE_COUNT;
 110 }
 111
 112 /* ------------------------------------------------------------- */
 113
 114 static int b1pcmcia_add_card(struct capi_driver *driver,
 115                                 unsigned int port,
 116                                 unsigned irq,
 117                                 enum avmcardtype cardtype)
 118 {
 119         avmcard *card;
 120         int retval;
 121
 122         card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
 123
 124         if (!card) {
 125                 printk(KERN_WARNING "b1pcmcia: no memory.\n");
 126                 return -ENOMEM;
 127         }
 128         memset(card, 0, sizeof(avmcard));
 129         switch (cardtype) {
 130                 case avm_m1: sprintf(card->name, "m1-%x", port); break;
 131                 case avm_m2: sprintf(card->name, "m2-%x", port); break;
 132                 default: sprintf(card->name, "b1pcmcia-%x", port); break;
 133         }
 134         card->port = port;
 135         card->irq = irq;
 136         card->cardtype = cardtype;
 137
 138         b1_reset(card->port);
 139         if ((retval = b1_detect(card->port, card->cardtype)) != 0) {
 140                 printk(KERN_NOTICE "b1pcmcia: NO card at 0x%x (%d)\n",
 141                                         card->port, retval);
 142                 kfree(card);
 143                 return -EIO;
 144         }
 145         b1_reset(card->port);
 146
 147         retval = request_irq(card->irq, b1pcmcia_interrupt, 0, card->name, card);
 148         if (retval) {
 149                 printk(KERN_ERR "b1pcmcia: unable to get IRQ %d.\n", card->irq);
 150                 kfree(card);
 151                 return -EBUSY;
 152         }
 153
 154         card->ctrl = di->attach_ctr(driver, card->name, card);
 155         if (!card->ctrl) {
 156                 printk(KERN_ERR "b1pcmcia: attach controller failed.\n");
 157                 free_irq(card->irq, card);
 158                 kfree(card);
 159                 return -EBUSY;
 160         }
 161
 162         MOD_INC_USE_COUNT;
 163         return card->ctrl->cnr;
 164 }
 165
 166 /* ------------------------------------------------------------- */
 167
 168 static char *b1pcmcia_procinfo(struct capi_ctr *ctrl)
 169 {
 170         avmcard *card = (avmcard *)(ctrl->driverdata);
 171         if (!card)
 172                 return "";
 173         sprintf(card->infobuf, "%s %s 0x%x %d",
 174                 card->cardname[0] ? card->cardname : "-",
 175                 card->version[VER_DRIVER] ? card->version[VER_DRIVER] : "-",
 176                 card->port, card->irq
 177                 );
 178         return card->infobuf;
 179 }
 180
 181 /* ------------------------------------------------------------- */
 182
 183 static struct capi_driver b1pcmcia_driver = {
 184     "b1pcmcia",
 185     "0.0",
 186     b1_load_firmware,
 187     b1_reset_ctr,
 188     b1pcmcia_remove_ctr,
 189     b1_register_appl,
 190     b1_release_appl,
 191     b1_send_message,
 192
 193     b1pcmcia_procinfo,
 194     b1ctl_read_proc,
 195     0,  /* use standard driver_read_proc */
 196
 197     0,
 198 };
 199
 200 /* ------------------------------------------------------------- */
 201
 202 int b1pcmcia_addcard_b1(unsigned int port, unsigned irq)
 203 {
 204         return b1pcmcia_add_card(&b1pcmcia_driver, port, irq, avm_b1pcmcia);
 205 }
 206
 207 int b1pcmcia_addcard_m1(unsigned int port, unsigned irq)
 208 {
 209         return b1pcmcia_add_card(&b1pcmcia_driver, port, irq, avm_m1);
 210 }
 211
 212 int b1pcmcia_addcard_m2(unsigned int port, unsigned irq)
 213 {
 214         return b1pcmcia_add_card(&b1pcmcia_driver, port, irq, avm_m2);
 215 }
 216
 217 int b1pcmcia_delcard(unsigned int port, unsigned irq)
 218 {
 219         struct capi_ctr *ctrl;
 220         avmcard *card;
 221
 222         for (ctrl = b1pcmcia_driver.controller; ctrl; ctrl = ctrl->next) {
 223                 card = (avmcard *)(ctrl->driverdata);
 224                 if (card->port == port && card->irq == irq) {
 225                         b1pcmcia_remove_ctr(ctrl);
 226                         return 0;
 227                 }
 228         }
 229         return -ESRCH;
 230 }
 231
 232 EXPORT_SYMBOL(b1pcmcia_addcard_b1);
 233 EXPORT_SYMBOL(b1pcmcia_addcard_m1);
 234 EXPORT_SYMBOL(b1pcmcia_addcard_m2);
 235 EXPORT_SYMBOL(b1pcmcia_delcard);
 236
 237 /* ------------------------------------------------------------- */
 238
 239 #ifdef MODULE
 240 #define b1pcmcia_init init_module
 241 void cleanup_module(void);
 242 #endif
 243
 244 int b1pcmcia_init(void)
 245 {
 246         struct capi_driver *driver = &b1pcmcia_driver;
 247         char *p;
 248
 249         if ((p = strchr(revision, ':'))) {
 250                 strncpy(driver->revision, p + 1, sizeof(driver->revision));
 251                 p = strchr(driver->revision, '$');
 252                 *p = 0;
 253         }
 254
 255         printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
 256
 257         di = attach_capi_driver(driver);
 258
 259         if (!di) {
 260                 printk(KERN_ERR "%s: failed to attach capi_driver\n",
 261                                 driver->name);
 262                 return -EIO;
 263         }
 264         return 0;
 265 }
 266
 267 #ifdef MODULE
 268 void cleanup_module(void)
 269 {
 270     detach_capi_driver(&b1pcmcia_driver);
 271 }
 272 #endif