drivers/isdn/hardware/avm/b1isa.c

   1 /* $Id: b1isa.c,v 1.1.2.3 2004/02/10 01:07:12 keil Exp $
   2  *
   3  * Module for AVM B1 ISA-card.
   4  *
   5  * Copyright 1999 by Carsten Paeth <calle@calle.de>
   6  *
   7  * This software may be used and distributed according to the terms
   8  * of the GNU General Public License, incorporated herein by reference.
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/skbuff.h>
  15 #include <linux/delay.h>
  16 #include <linux/mm.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/ioport.h>
  19 #include <linux/capi.h>
  20 #include <linux/init.h>
  21 #include <linux/pci.h>
  22 #include <asm/io.h>
  23 #include <linux/isdn/capicmd.h>
  24 #include <linux/isdn/capiutil.h>
  25 #include <linux/isdn/capilli.h>
  26 #include "avmcard.h"
  27
  28 /* ------------------------------------------------------------- */
  29
  30 static char *revision = "$Revision: 1.1.2.3 $";
  31
  32 /* ------------------------------------------------------------- */
  33
  34 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM B1 ISA card");
  35 MODULE_AUTHOR("Carsten Paeth");
  36 MODULE_LICENSE("GPL");
  37
  38 /* ------------------------------------------------------------- */
  39
  40 static void b1isa_remove(struct pci_dev *pdev)
  41 {
  42         avmctrl_info *cinfo = pci_get_drvdata(pdev);
  43         avmcard *card;
  44
  45         if (!cinfo)
  46                 return;
  47
  48         card = cinfo->card;
  49
  50         b1_reset(card->port);
  51         b1_reset(card->port);
  52
  53         detach_capi_ctr(&cinfo->capi_ctrl);
  54         free_irq(card->irq, card);
  55         release_region(card->port, AVMB1_PORTLEN);
  56         b1_free_card(card);
  57 }
  58
  59 /* ------------------------------------------------------------- */
  60
  61 static char *b1isa_procinfo(struct capi_ctr *ctrl);
  62
  63 static int b1isa_probe(struct pci_dev *pdev)
  64 {
  65         avmctrl_info *cinfo;
  66         avmcard *card;
  67         int retval;
  68
  69         card = b1_alloc_card(1);
  70         if (!card) {
  71                 printk(KERN_WARNING "b1isa: no memory.\n");
  72                 retval = -ENOMEM;
  73                 goto err;
  74         }
  75
  76         cinfo = card->ctrlinfo;
  77
  78         card->port = pci_resource_start(pdev, 0);
  79         card->irq = pdev->irq;
  80         card->cardtype = avm_b1isa;
  81         sprintf(card->name, "b1isa-%x", card->port);
  82
  83         if (   card->port != 0x150 && card->port != 0x250
  84             && card->port != 0x300 && card->port != 0x340) {
  85                 printk(KERN_WARNING "b1isa: invalid port 0x%x.\n", card->port);
  86                 retval = -EINVAL;
  87                 goto err_free;
  88         }
  89         if (b1_irq_table[card->irq & 0xf] == 0) {
  90                 printk(KERN_WARNING "b1isa: irq %d not valid.\n", card->irq);
  91                 retval = -EINVAL;
  92                 goto err_free;
  93         }
  94         if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
  95                 printk(KERN_WARNING "b1isa: ports 0x%03x-0x%03x in use.\n",
  96                        card->port, card->port + AVMB1_PORTLEN);
  97                 retval = -EBUSY;
  98                 goto err_free;
  99         }
 100         retval = request_irq(card->irq, b1_interrupt, 0, card->name, card);
 101         if (retval) {
 102                 printk(KERN_ERR "b1isa: unable to get IRQ %d.\n", card->irq);
 103                 goto err_release_region;
 104         }
 105         b1_reset(card->port);
 106         if ((retval = b1_detect(card->port, card->cardtype)) != 0) {
 107                 printk(KERN_NOTICE "b1isa: NO card at 0x%x (%d)\n",
 108                        card->port, retval);
 109                 retval = -ENODEV;
 110                 goto err_free_irq;
 111         }
 112         b1_reset(card->port);
 113         b1_getrevision(card);
 114
 115         cinfo->capi_ctrl.owner = THIS_MODULE;
 116         cinfo->capi_ctrl.driver_name   = "b1isa";
 117         cinfo->capi_ctrl.driverdata    = cinfo;
 118         cinfo->capi_ctrl.register_appl = b1_register_appl;
 119         cinfo->capi_ctrl.release_appl  = b1_release_appl;
 120         cinfo->capi_ctrl.send_message  = b1_send_message;
 121         cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 122         cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 123         cinfo->capi_ctrl.procinfo      = b1isa_procinfo;
 124         cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
 125         strcpy(cinfo->capi_ctrl.name, card->name);
 126
 127         retval = attach_capi_ctr(&cinfo->capi_ctrl);
 128         if (retval) {
 129                 printk(KERN_ERR "b1isa: attach controller failed.\n");
 130                 goto err_free_irq;
 131         }
 132
 133         printk(KERN_INFO "b1isa: AVM B1 ISA at i/o %#x, irq %d, revision %d\n",
 134                card->port, card->irq, card->revision);
 135
 136         pci_set_drvdata(pdev, cinfo);
 137         return 0;
 138
 139  err_free_irq:
 140         free_irq(card->irq, card);
 141  err_release_region:
 142         release_region(card->port, AVMB1_PORTLEN);
 143  err_free:
 144         b1_free_card(card);
 145  err:
 146         return retval;
 147 }
 148
 149 static char *b1isa_procinfo(struct capi_ctr *ctrl)
 150 {
 151         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 152
 153         if (!cinfo)
 154                 return "";
 155         sprintf(cinfo->infobuf, "%s %s 0x%x %d r%d",
 156                 cinfo->cardname[0] ? cinfo->cardname : "-",
 157                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
 158                 cinfo->card ? cinfo->card->port : 0x0,
 159                 cinfo->card ? cinfo->card->irq : 0,
 160                 cinfo->card ? cinfo->card->revision : 0
 161                 );
 162         return cinfo->infobuf;
 163 }
 164
 165 /* ------------------------------------------------------------- */
 166
 167 #define MAX_CARDS 4
 168 static struct pci_dev isa_dev[MAX_CARDS];
 169 static int io[MAX_CARDS];
 170 static int irq[MAX_CARDS];
 171
 172 module_param_array(io, int, NULL, 0);
 173 module_param_array(irq, int, NULL, 0);
 174 MODULE_PARM_DESC(io, "I/O base address(es)");
 175 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
 176
 177 static int b1isa_add_card(struct capi_driver *driver, capicardparams *data)
 178 {
 179         int i;
 180
 181         for (i = 0; i < MAX_CARDS; i++) {
 182                 if (isa_dev[i].resource[0].start)
 183                         continue;
 184
 185                 isa_dev[i].resource[0].start = data->port;
 186                 isa_dev[i].irq = data->irq;
 187
 188                 if (b1isa_probe(&isa_dev[i]) == 0)
 189                         return 0;
 190         }
 191         return -ENODEV;
 192 }
 193
 194 static struct capi_driver capi_driver_b1isa = {
 195         .name           = "b1isa",
 196         .revision       = "1.0",
 197         .add_card       = b1isa_add_card,
 198 };
 199
 200 static int __init b1isa_init(void)
 201 {
 202         char *p;
 203         char rev[32];
 204         int i;
 205
 206         if ((p = strchr(revision, ':')) != NULL && p[1]) {
 207                 strlcpy(rev, p + 2, 32);
 208                 if ((p = strchr(rev, '$')) != NULL && p > rev)
 209                    *(p-1) = 0;
 210         } else
 211                 strcpy(rev, "1.0");
 212
 213         for (i = 0; i < MAX_CARDS; i++) {
 214                 if (!io[i])
 215                         break;
 216
 217                 isa_dev[i].resource[0].start = io[i];
 218                 isa_dev[i].irq = irq[i];
 219
 220                 if (b1isa_probe(&isa_dev[i]) != 0)
 221                         return -ENODEV;
 222         }
 223
 224         strlcpy(capi_driver_b1isa.revision, rev, 32);
 225         register_capi_driver(&capi_driver_b1isa);
 226         printk(KERN_INFO "b1isa: revision %s\n", rev);
 227
 228         return 0;
 229 }
 230
 231 static void __exit b1isa_exit(void)
 232 {
 233         int i;
 234
 235         for (i = 0; i < MAX_CARDS; i++) {
 236                 if (isa_dev[i].resource[0].start)
 237                         b1isa_remove(&isa_dev[i]);
 238         }
 239         unregister_capi_driver(&capi_driver_b1isa);
 240 }
 241
 242 module_init(b1isa_init);
 243 module_exit(b1isa_exit);