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/config.h>
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/skbuff.h>
  16 #include <linux/delay.h>
  17 #include <linux/mm.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/ioport.h>
  20 #include <linux/pci.h>
  21 #include <linux/capi.h>
  22 #include <linux/init.h>
  23 #include <asm/io.h>
  24 #include <linux/isdn/capicmd.h>
  25 #include <linux/isdn/capiutil.h>
  26 #include <linux/isdn/capilli.h>
  27 #include "avmcard.h"
  28
  29 #undef CONFIG_T1PCI_DEBUG
  30 #undef CONFIG_T1PCI_POLLDEBUG
  31
  32 /* ------------------------------------------------------------- */
  33 static char *revision = "$Revision: 1.1.2.2 $";
  34 /* ------------------------------------------------------------- */
  35
  36 static struct pci_device_id t1pci_pci_tbl[] = {
  37         { PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, PCI_ANY_ID, PCI_ANY_ID },
  38         { }                             /* Terminating entry */
  39 };
  40
  41 MODULE_DEVICE_TABLE(pci, t1pci_pci_tbl);
  42 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 PCI card");
  43 MODULE_AUTHOR("Carsten Paeth");
  44 MODULE_LICENSE("GPL");
  45
  46 /* ------------------------------------------------------------- */
  47
  48 static char *t1pci_procinfo(struct capi_ctr *ctrl);
  49
  50 static int t1pci_add_card(struct capicardparams *p, struct pci_dev *pdev)
  51 {
  52         avmcard *card;
  53         avmctrl_info *cinfo;
  54         int retval;
  55
  56         card = b1_alloc_card(1);
  57         if (!card) {
  58                 printk(KERN_WARNING "t1pci: no memory.\n");
  59                 retval = -ENOMEM;
  60                 goto err;
  61         }
  62
  63         card->dma = avmcard_dma_alloc("t1pci", pdev, 2048+128, 2048+128);
  64         if (!card->dma) {
  65                 printk(KERN_WARNING "t1pci: no memory.\n");
  66                 retval = -ENOMEM;
  67                 goto err_free;
  68         }
  69
  70         cinfo = card->ctrlinfo;
  71         sprintf(card->name, "t1pci-%x", p->port);
  72         card->port = p->port;
  73         card->irq = p->irq;
  74         card->membase = p->membase;
  75         card->cardtype = avm_t1pci;
  76
  77         if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
  78                 printk(KERN_WARNING "t1pci: ports 0x%03x-0x%03x in use.\n",
  79                        card->port, card->port + AVMB1_PORTLEN);
  80                 retval = -EBUSY;
  81                 goto err_free_dma;
  82         }
  83
  84         card->mbase = ioremap(card->membase, 64);
  85         if (!card->mbase) {
  86                 printk(KERN_NOTICE "t1pci: can't remap memory at 0x%lx\n",
  87                        card->membase);
  88                 retval = -EIO;
  89                 goto err_release_region;
  90         }
  91
  92         b1dma_reset(card);
  93
  94         retval = t1pci_detect(card);
  95         if (retval != 0) {
  96                 if (retval < 6)
  97                         printk(KERN_NOTICE "t1pci: NO card at 0x%x (%d)\n",
  98                                card->port, retval);
  99                 else
 100                         printk(KERN_NOTICE "t1pci: card at 0x%x, but cable not connected or T1 has no power (%d)\n",
 101                                card->port, retval);
 102                 retval = -EIO;
 103                 goto err_unmap;
 104         }
 105         b1dma_reset(card);
 106
 107         retval = request_irq(card->irq, b1dma_interrupt, SA_SHIRQ, card->name, card);
 108         if (retval) {
 109                 printk(KERN_ERR "t1pci: unable to get IRQ %d.\n", card->irq);
 110                 retval = -EBUSY;
 111                 goto err_unmap;
 112         }
 113
 114         cinfo->capi_ctrl.owner         = THIS_MODULE;
 115         cinfo->capi_ctrl.driver_name   = "t1pci";
 116         cinfo->capi_ctrl.driverdata    = cinfo;
 117         cinfo->capi_ctrl.register_appl = b1dma_register_appl;
 118         cinfo->capi_ctrl.release_appl  = b1dma_release_appl;
 119         cinfo->capi_ctrl.send_message  = b1dma_send_message;
 120         cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 121         cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 122         cinfo->capi_ctrl.procinfo      = t1pci_procinfo;
 123         cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
 124         strcpy(cinfo->capi_ctrl.name, card->name);
 125
 126         retval = attach_capi_ctr(&cinfo->capi_ctrl);
 127         if (retval) {
 128                 printk(KERN_ERR "t1pci: attach controller failed.\n");
 129                 retval = -EBUSY;
 130                 goto err_free_irq;
 131         }
 132         card->cardnr = cinfo->capi_ctrl.cnr;
 133
 134         printk(KERN_INFO "t1pci: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
 135                card->port, card->irq, card->membase);
 136
 137         pci_set_drvdata(pdev, card);
 138         return 0;
 139
 140  err_free_irq:
 141         free_irq(card->irq, card);
 142  err_unmap:
 143         iounmap(card->mbase);
 144  err_release_region:
 145         release_region(card->port, AVMB1_PORTLEN);
 146  err_free_dma:
 147         avmcard_dma_free(card->dma);
 148  err_free:
 149         b1_free_card(card);
 150  err:
 151         return retval;
 152 }
 153
 154 /* ------------------------------------------------------------- */
 155
 156 static void t1pci_remove(struct pci_dev *pdev)
 157 {
 158         avmcard *card = pci_get_drvdata(pdev);
 159         avmctrl_info *cinfo = card->ctrlinfo;
 160
 161         b1dma_reset(card);
 162
 163         detach_capi_ctr(&cinfo->capi_ctrl);
 164         free_irq(card->irq, card);
 165         iounmap(card->mbase);
 166         release_region(card->port, AVMB1_PORTLEN);
 167         avmcard_dma_free(card->dma);
 168         b1_free_card(card);
 169 }
 170
 171 /* ------------------------------------------------------------- */
 172
 173 static char *t1pci_procinfo(struct capi_ctr *ctrl)
 174 {
 175         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 176
 177         if (!cinfo)
 178                 return "";
 179         sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
 180                 cinfo->cardname[0] ? cinfo->cardname : "-",
 181                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
 182                 cinfo->card ? cinfo->card->port : 0x0,
 183                 cinfo->card ? cinfo->card->irq : 0,
 184                 cinfo->card ? cinfo->card->membase : 0
 185                 );
 186         return cinfo->infobuf;
 187 }
 188
 189 /* ------------------------------------------------------------- */
 190
 191 static int __devinit t1pci_probe(struct pci_dev *dev,
 192                                  const struct pci_device_id *ent)
 193 {
 194         struct capicardparams param;
 195         int retval;
 196
 197         if (pci_enable_device(dev) < 0) {
 198                 printk(KERN_ERR "t1pci: failed to enable AVM-T1-PCI\n");
 199                 return -ENODEV;
 200         }
 201         pci_set_master(dev);
 202
 203         param.port = pci_resource_start(dev, 1);
 204         param.irq = dev->irq;
 205         param.membase = pci_resource_start(dev, 0);
 206
 207         printk(KERN_INFO "t1pci: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
 208                param.port, param.irq, param.membase);
 209
 210         retval = t1pci_add_card(&param, dev);
 211         if (retval != 0) {
 212                 printk(KERN_ERR "t1pci: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
 213                        param.port, param.irq, param.membase);
 214                 return -ENODEV;
 215         }
 216         return 0;
 217 }
 218
 219 static struct pci_driver t1pci_pci_driver = {
 220        .name           = "t1pci",
 221        .id_table       = t1pci_pci_tbl,
 222        .probe          = t1pci_probe,
 223        .remove         = t1pci_remove,
 224 };
 225
 226 static struct capi_driver capi_driver_t1pci = {
 227         .name           = "t1pci",
 228         .revision       = "1.0",
 229 };
 230
 231 static int __init t1pci_init(void)
 232 {
 233         char *p;
 234         char rev[32];
 235         int err;
 236
 237         if ((p = strchr(revision, ':')) != 0 && p[1]) {
 238                 strlcpy(rev, p + 2, 32);
 239                 if ((p = strchr(rev, '$')) != 0 && p > rev)
 240                    *(p-1) = 0;
 241         } else
 242                 strcpy(rev, "1.0");
 243
 244         err = pci_register_driver(&t1pci_pci_driver);
 245         if (!err) {
 246                 strlcpy(capi_driver_t1pci.revision, rev, 32);
 247                 register_capi_driver(&capi_driver_t1pci);
 248                 printk(KERN_INFO "t1pci: revision %s\n", rev);
 249         }
 250         return err;
 251 }
 252
 253 static void __exit t1pci_exit(void)
 254 {
 255         unregister_capi_driver(&capi_driver_t1pci);
 256         pci_unregister_driver(&t1pci_pci_driver);
 257 }
 258
 259 module_init(t1pci_init);
 260 module_exit(t1pci_exit);