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Linux/drivers/isdn/hardware/avm/b1pci.c

  1 /* $Id: b1pci.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
  2  *
  3  * Module for AVM B1 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 <asm/io.h>
 22 #include <linux/init.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: 1.1.2.2 $";
 31 
 32 /* ------------------------------------------------------------- */
 33 
 34 static struct pci_device_id b1pci_pci_tbl[] = {
 35         { PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_B1, PCI_ANY_ID, PCI_ANY_ID },
 36         { }                             /* Terminating entry */
 37 };
 38 
 39 MODULE_DEVICE_TABLE(pci, b1pci_pci_tbl);
 40 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM B1 PCI card");
 41 MODULE_AUTHOR("Carsten Paeth");
 42 MODULE_LICENSE("GPL");
 43 
 44 /* ------------------------------------------------------------- */
 45 
 46 static char *b1pci_procinfo(struct capi_ctr *ctrl)
 47 {
 48         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 49 
 50         if (!cinfo)
 51                 return "";
 52         sprintf(cinfo->infobuf, "%s %s 0x%x %d r%d",
 53                 cinfo->cardname[0] ? cinfo->cardname : "-",
 54                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
 55                 cinfo->card ? cinfo->card->port : 0x0,
 56                 cinfo->card ? cinfo->card->irq : 0,
 57                 cinfo->card ? cinfo->card->revision : 0
 58                 );
 59         return cinfo->infobuf;
 60 }
 61 
 62 /* ------------------------------------------------------------- */
 63 
 64 static int b1pci_probe(struct capicardparams *p, struct pci_dev *pdev)
 65 {
 66         avmcard *card;
 67         avmctrl_info *cinfo;
 68         int retval;
 69 
 70         card = b1_alloc_card(1);
 71         if (!card) {
 72                 printk(KERN_WARNING "b1pci: no memory.\n");
 73                 retval = -ENOMEM;
 74                 goto err;
 75         }
 76 
 77         cinfo = card->ctrlinfo;
 78         sprintf(card->name, "b1pci-%x", p->port);
 79         card->port = p->port;
 80         card->irq = p->irq;
 81         card->cardtype = avm_b1pci;
 82 
 83         if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
 84                 printk(KERN_WARNING "b1pci: ports 0x%03x-0x%03x in use.\n",
 85                        card->port, card->port + AVMB1_PORTLEN);
 86                 retval = -EBUSY;
 87                 goto err_free;
 88         }
 89         b1_reset(card->port);
 90         retval = b1_detect(card->port, card->cardtype);
 91         if (retval) {
 92                 printk(KERN_NOTICE "b1pci: NO card at 0x%x (%d)\n",
 93                        card->port, retval);
 94                 retval = -ENODEV;
 95                 goto err_release_region;
 96         }
 97         b1_reset(card->port);
 98         b1_getrevision(card);
 99 
100         retval = request_irq(card->irq, b1_interrupt, IRQF_SHARED, card->name, card);
101         if (retval) {
102                 printk(KERN_ERR "b1pci: unable to get IRQ %d.\n", card->irq);
103                 retval = -EBUSY;
104                 goto err_release_region;
105         }
106 
107         cinfo->capi_ctrl.driver_name   = "b1pci";
108         cinfo->capi_ctrl.driverdata    = cinfo;
109         cinfo->capi_ctrl.register_appl = b1_register_appl;
110         cinfo->capi_ctrl.release_appl  = b1_release_appl;
111         cinfo->capi_ctrl.send_message  = b1_send_message;
112         cinfo->capi_ctrl.load_firmware = b1_load_firmware;
113         cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
114         cinfo->capi_ctrl.procinfo      = b1pci_procinfo;
115         cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
116         strcpy(cinfo->capi_ctrl.name, card->name);
117         cinfo->capi_ctrl.owner         = THIS_MODULE;
118 
119         retval = attach_capi_ctr(&cinfo->capi_ctrl);
120         if (retval) {
121                 printk(KERN_ERR "b1pci: attach controller failed.\n");
122                 goto err_free_irq;
123         }
124 
125         if (card->revision >= 4) {
126                 printk(KERN_INFO "b1pci: AVM B1 PCI V4 at i/o %#x, irq %d, revision %d (no dma)\n",
127                        card->port, card->irq, card->revision);
128         } else {
129                 printk(KERN_INFO "b1pci: AVM B1 PCI at i/o %#x, irq %d, revision %d\n",
130                        card->port, card->irq, card->revision);
131         }
132 
133         pci_set_drvdata(pdev, card);
134         return 0;
135 
136 err_free_irq:
137         free_irq(card->irq, card);
138 err_release_region:
139         release_region(card->port, AVMB1_PORTLEN);
140 err_free:
141         b1_free_card(card);
142 err:
143         return retval;
144 }
145 
146 static void b1pci_remove(struct pci_dev *pdev)
147 {
148         avmcard *card = pci_get_drvdata(pdev);
149         avmctrl_info *cinfo = card->ctrlinfo;
150         unsigned int port = card->port;
151 
152         b1_reset(port);
153         b1_reset(port);
154 
155         detach_capi_ctr(&cinfo->capi_ctrl);
156         free_irq(card->irq, card);
157         release_region(card->port, AVMB1_PORTLEN);
158         b1_free_card(card);
159 }
160 
161 #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
162 /* ------------------------------------------------------------- */
163 
164 static char *b1pciv4_procinfo(struct capi_ctr *ctrl)
165 {
166         avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
167 
168         if (!cinfo)
169                 return "";
170         sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx r%d",
171                 cinfo->cardname[0] ? cinfo->cardname : "-",
172                 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
173                 cinfo->card ? cinfo->card->port : 0x0,
174                 cinfo->card ? cinfo->card->irq : 0,
175                 cinfo->card ? cinfo->card->membase : 0,
176                 cinfo->card ? cinfo->card->revision : 0
177                 );
178         return cinfo->infobuf;
179 }
180 
181 /* ------------------------------------------------------------- */
182 
183 static int b1pciv4_probe(struct capicardparams *p, struct pci_dev *pdev)
184 {
185         avmcard *card;
186         avmctrl_info *cinfo;
187         int retval;
188 
189         card = b1_alloc_card(1);
190         if (!card) {
191                 printk(KERN_WARNING "b1pci: no memory.\n");
192                 retval = -ENOMEM;
193                 goto err;
194         }
195 
196         card->dma = avmcard_dma_alloc("b1pci", pdev, 2048 + 128, 2048 + 128);
197         if (!card->dma) {
198                 printk(KERN_WARNING "b1pci: dma alloc.\n");
199                 retval = -ENOMEM;
200                 goto err_free;
201         }
202 
203         cinfo = card->ctrlinfo;
204         sprintf(card->name, "b1pciv4-%x", p->port);
205         card->port = p->port;
206         card->irq = p->irq;
207         card->membase = p->membase;
208         card->cardtype = avm_b1pci;
209 
210         if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
211                 printk(KERN_WARNING "b1pci: ports 0x%03x-0x%03x in use.\n",
212                        card->port, card->port + AVMB1_PORTLEN);
213                 retval = -EBUSY;
214                 goto err_free_dma;
215         }
216 
217         card->mbase = ioremap(card->membase, 64);
218         if (!card->mbase) {
219                 printk(KERN_NOTICE "b1pci: can't remap memory at 0x%lx\n",
220                        card->membase);
221                 retval = -ENOMEM;
222                 goto err_release_region;
223         }
224 
225         b1dma_reset(card);
226 
227         retval = b1pciv4_detect(card);
228         if (retval) {
229                 printk(KERN_NOTICE "b1pci: NO card at 0x%x (%d)\n",
230                        card->port, retval);
231                 retval = -ENODEV;
232                 goto err_unmap;
233         }
234         b1dma_reset(card);
235         b1_getrevision(card);
236 
237         retval = request_irq(card->irq, b1dma_interrupt, IRQF_SHARED, card->name, card);
238         if (retval) {
239                 printk(KERN_ERR "b1pci: unable to get IRQ %d.\n",
240                        card->irq);
241                 retval = -EBUSY;
242                 goto err_unmap;
243         }
244 
245         cinfo->capi_ctrl.owner         = THIS_MODULE;
246         cinfo->capi_ctrl.driver_name   = "b1pciv4";
247         cinfo->capi_ctrl.driverdata    = cinfo;
248         cinfo->capi_ctrl.register_appl = b1dma_register_appl;
249         cinfo->capi_ctrl.release_appl  = b1dma_release_appl;
250         cinfo->capi_ctrl.send_message  = b1dma_send_message;
251         cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
252         cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
253         cinfo->capi_ctrl.procinfo      = b1pciv4_procinfo;
254         cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
255         strcpy(cinfo->capi_ctrl.name, card->name);
256 
257         retval = attach_capi_ctr(&cinfo->capi_ctrl);
258         if (retval) {
259                 printk(KERN_ERR "b1pci: attach controller failed.\n");
260                 goto err_free_irq;
261         }
262         card->cardnr = cinfo->capi_ctrl.cnr;
263 
264         printk(KERN_INFO "b1pci: AVM B1 PCI V4 at i/o %#x, irq %d, mem %#lx, revision %d (dma)\n",
265                card->port, card->irq, card->membase, card->revision);
266 
267         pci_set_drvdata(pdev, card);
268         return 0;
269 
270 err_free_irq:
271         free_irq(card->irq, card);
272 err_unmap:
273         iounmap(card->mbase);
274 err_release_region:
275         release_region(card->port, AVMB1_PORTLEN);
276 err_free_dma:
277         avmcard_dma_free(card->dma);
278 err_free:
279         b1_free_card(card);
280 err:
281         return retval;
282 
283 }
284 
285 static void b1pciv4_remove(struct pci_dev *pdev)
286 {
287         avmcard *card = pci_get_drvdata(pdev);
288         avmctrl_info *cinfo = card->ctrlinfo;
289 
290         b1dma_reset(card);
291 
292         detach_capi_ctr(&cinfo->capi_ctrl);
293         free_irq(card->irq, card);
294         iounmap(card->mbase);
295         release_region(card->port, AVMB1_PORTLEN);
296         avmcard_dma_free(card->dma);
297         b1_free_card(card);
298 }
299 
300 #endif /* CONFIG_ISDN_DRV_AVMB1_B1PCIV4 */
301 
302 static int b1pci_pci_probe(struct pci_dev *pdev,
303                            const struct pci_device_id *ent)
304 {
305         struct capicardparams param;
306         int retval;
307 
308         if (pci_enable_device(pdev) < 0) {
309                 printk(KERN_ERR "b1pci: failed to enable AVM-B1\n");
310                 return -ENODEV;
311         }
312         param.irq = pdev->irq;
313 
314         if (pci_resource_start(pdev, 2)) { /* B1 PCI V4 */
315 #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
316                 pci_set_master(pdev);
317 #endif
318                 param.membase = pci_resource_start(pdev, 0);
319                 param.port = pci_resource_start(pdev, 2);
320 
321                 printk(KERN_INFO "b1pci: PCI BIOS reports AVM-B1 V4 at i/o %#x, irq %d, mem %#x\n",
322                        param.port, param.irq, param.membase);
323 #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
324                 retval = b1pciv4_probe(&param, pdev);
325 #else
326                 retval = b1pci_probe(&param, pdev);
327 #endif
328                 if (retval != 0) {
329                         printk(KERN_ERR "b1pci: no AVM-B1 V4 at i/o %#x, irq %d, mem %#x detected\n",
330                                param.port, param.irq, param.membase);
331                 }
332         } else {
333                 param.membase = 0;
334                 param.port = pci_resource_start(pdev, 1);
335 
336                 printk(KERN_INFO "b1pci: PCI BIOS reports AVM-B1 at i/o %#x, irq %d\n",
337                        param.port, param.irq);
338                 retval = b1pci_probe(&param, pdev);
339                 if (retval != 0) {
340                         printk(KERN_ERR "b1pci: no AVM-B1 at i/o %#x, irq %d detected\n",
341                                param.port, param.irq);
342                 }
343         }
344         return retval;
345 }
346 
347 static void b1pci_pci_remove(struct pci_dev *pdev)
348 {
349 #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
350         avmcard *card = pci_get_drvdata(pdev);
351 
352         if (card->dma)
353                 b1pciv4_remove(pdev);
354         else
355                 b1pci_remove(pdev);
356 #else
357         b1pci_remove(pdev);
358 #endif
359 }
360 
361 static struct pci_driver b1pci_pci_driver = {
362         .name           = "b1pci",
363         .id_table       = b1pci_pci_tbl,
364         .probe          = b1pci_pci_probe,
365         .remove         = b1pci_pci_remove,
366 };
367 
368 static struct capi_driver capi_driver_b1pci = {
369         .name           = "b1pci",
370         .revision       = "1.0",
371 };
372 #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
373 static struct capi_driver capi_driver_b1pciv4 = {
374         .name           = "b1pciv4",
375         .revision       = "1.0",
376 };
377 #endif
378 
379 static int __init b1pci_init(void)
380 {
381         char *p;
382         char rev[32];
383         int err;
384 
385         if ((p = strchr(revision, ':')) != NULL && p[1]) {
386                 strlcpy(rev, p + 2, 32);
387                 if ((p = strchr(rev, '$')) != NULL && p > rev)
388                         *(p - 1) = 0;
389         } else
390                 strcpy(rev, "1.0");
391 
392 
393         err = pci_register_driver(&b1pci_pci_driver);
394         if (!err) {
395                 strlcpy(capi_driver_b1pci.revision, rev, 32);
396                 register_capi_driver(&capi_driver_b1pci);
397 #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
398                 strlcpy(capi_driver_b1pciv4.revision, rev, 32);
399                 register_capi_driver(&capi_driver_b1pciv4);
400 #endif
401                 printk(KERN_INFO "b1pci: revision %s\n", rev);
402         }
403         return err;
404 }
405 
406 static void __exit b1pci_exit(void)
407 {
408         unregister_capi_driver(&capi_driver_b1pci);
409 #ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
410         unregister_capi_driver(&capi_driver_b1pciv4);
411 #endif
412         pci_unregister_driver(&b1pci_pci_driver);
413 }
414 
415 module_init(b1pci_init);
416 module_exit(b1pci_exit);
417 

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