drivers/isdn/hardware/avm/t1pci.c

   1 /* $Id: t1pci.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
   2  *
   3  * Module for AVM T1 PCI-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/pci.h>
  20 #include <linux/capi.h>
  21 #include <linux/init.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 #undef CONFIG_T1PCI_DEBUG
  29 #undef CONFIG_T1PCI_POLLDEBUG
  30
  31 /* ------------------------------------------------------------- */
  32 static char *revision = "$Revision: 1.1.2.2 $";
  33 /* ------------------------------------------------------------- */
  34
  35 static struct pci_device_id t1pci_pci_tbl[] = {
  36         { PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, PCI_ANY_ID, PCI_ANY_ID },
  37         { }                             /* Terminating entry */
  38 };
  39
  40 MODULE_DEVICE_TABLE(pci, t1pci_pci_tbl);
  41 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 PCI card");
  42 MODULE_AUTHOR("Carsten Paeth");
  43 MODULE_LICENSE("GPL");
  44
  45 /* ------------------------------------------------------------- */
  46
  47 static char *t1pci_procinfo(struct capi_ctr *ctrl);
  48
  49 static int t1pci_add_card(struct capicardparams *p, struct pci_dev *pdev)
  50 {
  51         avmcard *card;
  52         avmctrl_info *cinfo;
  53         int retval;
  54
  55         card = b1_alloc_card(1);
  56         if (!card) {
  57                 printk(KERN_WARNING "t1pci: no memory.\n");
  58                 retval = -ENOMEM;
  59                 goto err;
  60         }
  61
  62         card->dma = avmcard_dma_alloc("t1pci", pdev, 2048 + 128, 2048 + 128);
  63         if (!card->dma) {
  64                 printk(KERN_WARNING "t1pci: no memory.\n");
  65                 retval = -ENOMEM;
  66                 goto err_free;
  67         }
  68
  69         cinfo = card->ctrlinfo;
  70         sprintf(card->name, "t1pci-%x", p->port);
  71         card->port = p->port;
  72         card->irq = p->irq;
  73         card->membase = p->membase;
  74         card->cardtype = avm_t1pci;
  75
  76         if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
  77                 printk(KERN_WARNING "t1pci: ports 0x%03x-0x%03x in use.\n",
  78                        card->port, card->port + AVMB1_PORTLEN);
  79                 retval = -EBUSY;
  80                 goto err_free_dma;
  81         }
  82
  83         card->mbase = ioremap(card->membase, 64);
  84         if (!card->mbase) {
  85                 printk(KERN_NOTICE "t1pci: can't remap memory at 0x%lx\n",
  86                        card->membase);
  87                 retval = -EIO;
  88                 goto err_release_region;
  89         }
  90
  91         b1dma_reset(card);
  92
  93         retval = t1pci_detect(card);
  94         if (retval != 0) {
  95                 if (retval < 6)
  96                         printk(KERN_NOTICE "t1pci: NO card at 0x%x (%d)\n",
  97                                card->port, retval);
  98                 else
  99                         printk(KERN_NOTICE "t1pci: card at 0x%x, but cable not connected or T1 has no power (%d)\n",
 100                                card->port, retval);
 101                 retval = -EIO;
 102                 goto err_unmap;
 103         }
 104         b1dma_reset(card);
 105
 106         retval = request_irq(card->irq, b1dma_interrupt, IRQF_SHARED, card->name, card);
 107         if (retval) {
 108                 printk(KERN_ERR "t1pci: unable to get IRQ %d.\n", card->irq);
 109                 retval = -EBUSY;
 110                 goto err_unmap;
 111         }
 112
 113         cinfo->capi_ctrl.owner         = THIS_MODULE;
 114         cinfo->capi_ctrl.driver_name   = "t1pci";
 115         cinfo->capi_ctrl.driverdata    = cinfo;
 116         cinfo->capi_ctrl.register_appl = b1dma_register_appl;
 117         cinfo->capi_ctrl.release_appl  = b1dma_release_appl;
 118         cinfo->capi_ctrl.send_message  = b1dma_send_message;
 119         cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 120         cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 121         cinfo->capi_ctrl.procinfo      = t1pci_procinfo;
 122         cinfo->capi_ctrl.proc_show     = b1dma_proc_show;
 123         strcpy(cinfo->capi_ctrl.name, card->name);
 124
 125         retval = attach_capi_ctr(&cinfo->capi_ctrl);
 126         if (retval) {
 127                 printk(KERN_ERR "t1pci: attach controller failed.\n");
 128                 retval = -EBUSY;
 129                 goto err_free_irq;
 130         }
 131         card->cardnr = cinfo->capi_ctrl.cnr;
 132
 133         printk(KERN_INFO "t1pci: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
 134                card->port, card->irq, card->membase);
 135
 136         pci_set_drvdata(pdev, card);
 137         return 0;
 138
 139 err_free_irq:
 140         free_irq(card->irq, card);
 141 err_unmap:
 142         iounmap(card->mbase);
 143 err_release_region:
 144         release_region(card->port, AVMB1_PORTLEN);
 145 err_free_dma:
 146         avmcard_dma_free(card->dma);
 147 err_free:
 148         b1_free_card(card);
 149 err:
 150         return retval;
 151 }
 152
 153 /* ------------------------------------------------------------- */
 154
 155 static void t1pci_remove(struct pci_dev *pdev)
 156 {
 157         avmcard *card = pci_get_drvdata(pdev);
 158         avmctrl_info *cinfo = card->ctrlinfo;
 159
 160         b1dma_reset(card);
 161
 162         detach_capi_ctr(&cinfo->capi_ctrl);
 163         free_irq(card->irq, card);
 164         iounmap(card->mbase);
 165         release_region(card->port, AVMB1_PORTLEN);
 166         avmcard_dma_free(card->dma);
 167         b1_free_card(card);
 168 }
 169
 170 /* ------------------------------------------------------------- */
 171
 172 static char *t1pci_procinfo(struct capi_ctr *ctrl)
 173 {
 174         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 175
 176         if (!cinfo)
 177                 return "";
 178         sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
 179                 cinfo->cardname[0] ? cinfo->cardname : "-",
 180                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
 181                 cinfo->card ? cinfo->card->port : 0x0,
 182                 cinfo->card ? cinfo->card->irq : 0,
 183                 cinfo->card ? cinfo->card->membase : 0
 184                 );
 185         return cinfo->infobuf;
 186 }
 187
 188 /* ------------------------------------------------------------- */
 189
 190 static int t1pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
 191 {
 192         struct capicardparams param;
 193         int retval;
 194
 195         if (pci_enable_device(dev) < 0) {
 196                 printk(KERN_ERR "t1pci: failed to enable AVM-T1-PCI\n");
 197                 return -ENODEV;
 198         }
 199         pci_set_master(dev);
 200
 201         param.port = pci_resource_start(dev, 1);
 202         param.irq = dev->irq;
 203         param.membase = pci_resource_start(dev, 0);
 204
 205         printk(KERN_INFO "t1pci: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
 206                param.port, param.irq, param.membase);
 207
 208         retval = t1pci_add_card(&param, dev);
 209         if (retval != 0) {
 210                 printk(KERN_ERR "t1pci: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
 211                        param.port, param.irq, param.membase);
 212                 pci_disable_device(dev);
 213                 return -ENODEV;
 214         }
 215         return 0;
 216 }
 217
 218 static struct pci_driver t1pci_pci_driver = {
 219         .name           = "t1pci",
 220         .id_table       = t1pci_pci_tbl,
 221         .probe          = t1pci_probe,
 222         .remove         = t1pci_remove,
 223 };
 224
 225 static struct capi_driver capi_driver_t1pci = {
 226         .name           = "t1pci",
 227         .revision       = "1.0",
 228 };
 229
 230 static int __init t1pci_init(void)
 231 {
 232         char *p;
 233         char rev[32];
 234         int err;
 235
 236         if ((p = strchr(revision, ':')) != NULL && p[1]) {
 237                 strlcpy(rev, p + 2, 32);
 238                 if ((p = strchr(rev, '$')) != NULL && p > rev)
 239                         *(p - 1) = 0;
 240         } else
 241                 strcpy(rev, "1.0");
 242
 243         err = pci_register_driver(&t1pci_pci_driver);
 244         if (!err) {
 245                 strlcpy(capi_driver_t1pci.revision, rev, 32);
 246                 register_capi_driver(&capi_driver_t1pci);
 247                 printk(KERN_INFO "t1pci: revision %s\n", rev);
 248         }
 249         return err;
 250 }
 251
 252 static void __exit t1pci_exit(void)
 253 {
 254         unregister_capi_driver(&capi_driver_t1pci);
 255         pci_unregister_driver(&t1pci_pci_driver);
 256 }
 257
 258 module_init(t1pci_init);
 259 module_exit(t1pci_exit);