File: /usr/src/linux/drivers/isdn/avmb1/t1pci.c
1 /*
2 * $Id: t1pci.c,v 1.13.6.5 2001/05/17 20:41:51 kai Exp $
3 *
4 * Module for AVM T1 PCI-card.
5 *
6 * (c) Copyright 1999 by Carsten Paeth (calle@calle.in-berlin.de)
7 *
8 */
9
10 #include <linux/config.h>
11 #include <linux/module.h>
12 #include <linux/kernel.h>
13 #include <linux/skbuff.h>
14 #include <linux/delay.h>
15 #include <linux/mm.h>
16 #include <linux/interrupt.h>
17 #include <linux/ioport.h>
18 #include <linux/pci.h>
19 #include <linux/capi.h>
20 #include <linux/init.h>
21 #include <asm/io.h>
22 #include "capicmd.h"
23 #include "capiutil.h"
24 #include "capilli.h"
25 #include "avmcard.h"
26
27 static char *revision = "$Revision: 1.13.6.5 $";
28
29 #undef CONFIG_T1PCI_DEBUG
30 #undef CONFIG_T1PCI_POLLDEBUG
31
32 /* ------------------------------------------------------------- */
33
34 static struct pci_device_id t1pci_pci_tbl[] __initdata = {
35 { PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, PCI_ANY_ID, PCI_ANY_ID },
36 { } /* Terminating entry */
37 };
38
39 MODULE_DEVICE_TABLE(pci, t1pci_pci_tbl);
40 MODULE_AUTHOR("Carsten Paeth <calle@calle.in-berlin.de>");
41
42 /* ------------------------------------------------------------- */
43
44 static struct capi_driver_interface *di;
45
46 /* ------------------------------------------------------------- */
47
48 static void t1pci_remove_ctr(struct capi_ctr *ctrl)
49 {
50 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
51 avmcard *card = cinfo->card;
52
53 b1dma_reset(card);
54
55 di->detach_ctr(ctrl);
56 free_irq(card->irq, card);
57 iounmap(card->mbase);
58 release_region(card->port, AVMB1_PORTLEN);
59 ctrl->driverdata = 0;
60 kfree(card->ctrlinfo);
61 kfree(card->dma);
62 kfree(card);
63
64 MOD_DEC_USE_COUNT;
65 }
66
67 /* ------------------------------------------------------------- */
68
69 static int t1pci_add_card(struct capi_driver *driver, struct capicardparams *p)
70 {
71 avmcard *card;
72 avmctrl_info *cinfo;
73 int retval;
74
75 MOD_INC_USE_COUNT;
76
77 card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
78
79 if (!card) {
80 printk(KERN_WARNING "%s: no memory.\n", driver->name);
81 MOD_DEC_USE_COUNT;
82 return -ENOMEM;
83 }
84 memset(card, 0, sizeof(avmcard));
85 card->dma = (avmcard_dmainfo *) kmalloc(sizeof(avmcard_dmainfo), GFP_ATOMIC);
86 if (!card->dma) {
87 printk(KERN_WARNING "%s: no memory.\n", driver->name);
88 kfree(card);
89 MOD_DEC_USE_COUNT;
90 return -ENOMEM;
91 }
92 memset(card->dma, 0, sizeof(avmcard_dmainfo));
93 cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info), GFP_ATOMIC);
94 if (!cinfo) {
95 printk(KERN_WARNING "%s: no memory.\n", driver->name);
96 kfree(card->dma);
97 kfree(card);
98 MOD_DEC_USE_COUNT;
99 return -ENOMEM;
100 }
101 memset(cinfo, 0, sizeof(avmctrl_info));
102 card->ctrlinfo = cinfo;
103 cinfo->card = card;
104 sprintf(card->name, "t1pci-%x", p->port);
105 card->port = p->port;
106 card->irq = p->irq;
107 card->membase = p->membase;
108 card->cardtype = avm_t1pci;
109
110 if (check_region(card->port, AVMB1_PORTLEN)) {
111 printk(KERN_WARNING
112 "%s: ports 0x%03x-0x%03x in use.\n",
113 driver->name, card->port, card->port + AVMB1_PORTLEN);
114 kfree(card->ctrlinfo);
115 kfree(card->dma);
116 kfree(card);
117 MOD_DEC_USE_COUNT;
118 return -EBUSY;
119 }
120
121 card->mbase = ioremap_nocache(card->membase, 64);
122 if (!card->mbase) {
123 printk(KERN_NOTICE "%s: can't remap memory at 0x%lx\n",
124 driver->name, card->membase);
125 kfree(card->ctrlinfo);
126 kfree(card->dma);
127 kfree(card);
128 MOD_DEC_USE_COUNT;
129 return -EIO;
130 }
131
132 b1dma_reset(card);
133
134 if ((retval = t1pci_detect(card)) != 0) {
135 if (retval < 6)
136 printk(KERN_NOTICE "%s: NO card at 0x%x (%d)\n",
137 driver->name, card->port, retval);
138 else
139 printk(KERN_NOTICE "%s: card at 0x%x, but cabel not connected or T1 has no power (%d)\n",
140 driver->name, card->port, retval);
141 iounmap(card->mbase);
142 kfree(card->ctrlinfo);
143 kfree(card->dma);
144 kfree(card);
145 MOD_DEC_USE_COUNT;
146 return -EIO;
147 }
148 b1dma_reset(card);
149
150 request_region(p->port, AVMB1_PORTLEN, card->name);
151
152 retval = request_irq(card->irq, b1dma_interrupt, SA_SHIRQ, card->name, card);
153 if (retval) {
154 printk(KERN_ERR "%s: unable to get IRQ %d.\n",
155 driver->name, card->irq);
156 iounmap(card->mbase);
157 release_region(card->port, AVMB1_PORTLEN);
158 kfree(card->ctrlinfo);
159 kfree(card->dma);
160 kfree(card);
161 MOD_DEC_USE_COUNT;
162 return -EBUSY;
163 }
164
165 cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo);
166 if (!cinfo->capi_ctrl) {
167 printk(KERN_ERR "%s: attach controller failed.\n", driver->name);
168 iounmap(card->mbase);
169 free_irq(card->irq, card);
170 release_region(card->port, AVMB1_PORTLEN);
171 kfree(card->ctrlinfo);
172 kfree(card->dma);
173 kfree(card);
174 MOD_DEC_USE_COUNT;
175 return -EBUSY;
176 }
177 card->cardnr = cinfo->capi_ctrl->cnr;
178
179 skb_queue_head_init(&card->dma->send_queue);
180
181 printk(KERN_INFO
182 "%s: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
183 driver->name, card->port, card->irq, card->membase);
184
185 return 0;
186 }
187
188 /* ------------------------------------------------------------- */
189
190 static char *t1pci_procinfo(struct capi_ctr *ctrl)
191 {
192 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
193
194 if (!cinfo)
195 return "";
196 sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
197 cinfo->cardname[0] ? cinfo->cardname : "-",
198 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
199 cinfo->card ? cinfo->card->port : 0x0,
200 cinfo->card ? cinfo->card->irq : 0,
201 cinfo->card ? cinfo->card->membase : 0
202 );
203 return cinfo->infobuf;
204 }
205
206 /* ------------------------------------------------------------- */
207
208 static struct capi_driver t1pci_driver = {
209 name: "t1pci",
210 revision: "0.0",
211 load_firmware: b1dma_load_firmware,
212 reset_ctr: b1dma_reset_ctr,
213 remove_ctr: t1pci_remove_ctr,
214 register_appl: b1dma_register_appl,
215 release_appl: b1dma_release_appl,
216 send_message: b1dma_send_message,
217
218 procinfo: t1pci_procinfo,
219 ctr_read_proc: b1dmactl_read_proc,
220 driver_read_proc: 0, /* use standard driver_read_proc */
221
222 add_card: 0, /* no add_card function */
223 };
224
225 static int ncards = 0;
226
227 static int __init t1pci_init(void)
228 {
229 struct capi_driver *driver = &t1pci_driver;
230 struct pci_dev *dev = NULL;
231 char *p;
232 int retval;
233
234 MOD_INC_USE_COUNT;
235
236 if ((p = strchr(revision, ':')) != 0 && p[1]) {
237 strncpy(driver->revision, p + 2, sizeof(driver->revision));
238 driver->revision[sizeof(driver->revision)-1] = 0;
239 if ((p = strchr(driver->revision, '$')) != 0 && p > driver->revision)
240 *(p-1) = 0;
241 }
242
243 printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
244
245 di = attach_capi_driver(driver);
246 if (!di) {
247 printk(KERN_ERR "%s: failed to attach capi_driver\n",
248 driver->name);
249 MOD_DEC_USE_COUNT;
250 return -EIO;
251 }
252
253 while ((dev = pci_find_device(PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, dev))) {
254 struct capicardparams param;
255
256 if (pci_enable_device(dev) < 0) {
257 printk(KERN_ERR "%s: failed to enable AVM-T1-PCI\n",
258 driver->name);
259 continue;
260 }
261 pci_set_master(dev);
262
263 param.port = pci_resource_start(dev, 1);
264 param.irq = dev->irq;
265 param.membase = pci_resource_start(dev, 0);
266
267 printk(KERN_INFO
268 "%s: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
269 driver->name, param.port, param.irq, param.membase);
270 retval = t1pci_add_card(driver, ¶m);
271 if (retval != 0) {
272 printk(KERN_ERR
273 "%s: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
274 driver->name, param.port, param.irq, param.membase);
275 continue;
276 }
277 ncards++;
278 }
279 if (ncards) {
280 printk(KERN_INFO "%s: %d T1-PCI card(s) detected\n",
281 driver->name, ncards);
282 MOD_DEC_USE_COUNT;
283 return 0;
284 }
285 printk(KERN_ERR "%s: NO T1-PCI card detected\n", driver->name);
286 detach_capi_driver(&t1pci_driver);
287 MOD_DEC_USE_COUNT;
288 return -ENODEV;
289 }
290
291 static void __exit t1pci_exit(void)
292 {
293 detach_capi_driver(&t1pci_driver);
294 }
295
296 module_init(t1pci_init);
297 module_exit(t1pci_exit);
298