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

http://github.com/mirrors/linux
C | 416 lines | 339 code | 61 blank | 16 comment | 31 complexity | bc6351973dfcf85ea2012fd5f1216132 MD5 | raw file
  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
 30static char *revision = "$Revision: 1.1.2.2 $";
 31
 32/* ------------------------------------------------------------- */
 33
 34static 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
 39MODULE_DEVICE_TABLE(pci, b1pci_pci_tbl);
 40MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM B1 PCI card");
 41MODULE_AUTHOR("Carsten Paeth");
 42MODULE_LICENSE("GPL");
 43
 44/* ------------------------------------------------------------- */
 45
 46static 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
 64static 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
136err_free_irq:
137	free_irq(card->irq, card);
138err_release_region:
139	release_region(card->port, AVMB1_PORTLEN);
140err_free:
141	b1_free_card(card);
142err:
143	return retval;
144}
145
146static 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
164static 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
183static 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
270err_free_irq:
271	free_irq(card->irq, card);
272err_unmap:
273	iounmap(card->mbase);
274err_release_region:
275	release_region(card->port, AVMB1_PORTLEN);
276err_free_dma:
277	avmcard_dma_free(card->dma);
278err_free:
279	b1_free_card(card);
280err:
281	return retval;
282
283}
284
285static 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
302static 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
347static 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
361static 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
368static struct capi_driver capi_driver_b1pci = {
369	.name		= "b1pci",
370	.revision	= "1.0",
371};
372#ifdef CONFIG_ISDN_DRV_AVMB1_B1PCIV4
373static struct capi_driver capi_driver_b1pciv4 = {
374	.name		= "b1pciv4",
375	.revision	= "1.0",
376};
377#endif
378
379static 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
406static 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
415module_init(b1pci_init);
416module_exit(b1pci_exit);