1 /* $Id: t1pci.c,v 1.1.4.1 2001/11/20 14:19:34 kai 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 "capicmd.h"
25 #include "capiutil.h"
26 #include "capilli.h"
27 #include "avmcard.h"
28
29 static char *revision = "$Revision: 1.1.4.1 $";
30
31 #undef CONFIG_T1PCI_DEBUG
32 #undef CONFIG_T1PCI_POLLDEBUG
33
34 /* ------------------------------------------------------------- */
35
36 static struct pci_device_id t1pci_pci_tbl[] __initdata = {
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 struct capi_driver_interface *di;
49
50 /* ------------------------------------------------------------- */
51
t1pci_remove_ctr(struct capi_ctr * ctrl)52 static void t1pci_remove_ctr(struct capi_ctr *ctrl)
53 {
54 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
55 avmcard *card = cinfo->card;
56
57 b1dma_reset(card);
58
59 di->detach_ctr(ctrl);
60 free_irq(card->irq, card);
61 iounmap(card->mbase);
62 release_region(card->port, AVMB1_PORTLEN);
63 ctrl->driverdata = 0;
64 kfree(card->ctrlinfo);
65 kfree(card->dma);
66 kfree(card);
67
68 MOD_DEC_USE_COUNT;
69 }
70
71 /* ------------------------------------------------------------- */
72
t1pci_add_card(struct capi_driver * driver,struct capicardparams * p)73 static int t1pci_add_card(struct capi_driver *driver, struct capicardparams *p)
74 {
75 avmcard *card;
76 avmctrl_info *cinfo;
77 int retval;
78
79 MOD_INC_USE_COUNT;
80
81 card = (avmcard *) kmalloc(sizeof(avmcard), GFP_ATOMIC);
82
83 if (!card) {
84 printk(KERN_WARNING "%s: no memory.\n", driver->name);
85 MOD_DEC_USE_COUNT;
86 return -ENOMEM;
87 }
88 memset(card, 0, sizeof(avmcard));
89 card->dma = (avmcard_dmainfo *) kmalloc(sizeof(avmcard_dmainfo), GFP_ATOMIC);
90 if (!card->dma) {
91 printk(KERN_WARNING "%s: no memory.\n", driver->name);
92 kfree(card);
93 MOD_DEC_USE_COUNT;
94 return -ENOMEM;
95 }
96 memset(card->dma, 0, sizeof(avmcard_dmainfo));
97 cinfo = (avmctrl_info *) kmalloc(sizeof(avmctrl_info), GFP_ATOMIC);
98 if (!cinfo) {
99 printk(KERN_WARNING "%s: no memory.\n", driver->name);
100 kfree(card->dma);
101 kfree(card);
102 MOD_DEC_USE_COUNT;
103 return -ENOMEM;
104 }
105 memset(cinfo, 0, sizeof(avmctrl_info));
106 card->ctrlinfo = cinfo;
107 cinfo->card = card;
108 sprintf(card->name, "t1pci-%x", p->port);
109 card->port = p->port;
110 card->irq = p->irq;
111 card->membase = p->membase;
112 card->cardtype = avm_t1pci;
113
114 if (check_region(card->port, AVMB1_PORTLEN)) {
115 printk(KERN_WARNING
116 "%s: ports 0x%03x-0x%03x in use.\n",
117 driver->name, card->port, card->port + AVMB1_PORTLEN);
118 kfree(card->ctrlinfo);
119 kfree(card->dma);
120 kfree(card);
121 MOD_DEC_USE_COUNT;
122 return -EBUSY;
123 }
124
125 card->mbase = ioremap_nocache(card->membase, 64);
126 if (!card->mbase) {
127 printk(KERN_NOTICE "%s: can't remap memory at 0x%lx\n",
128 driver->name, card->membase);
129 kfree(card->ctrlinfo);
130 kfree(card->dma);
131 kfree(card);
132 MOD_DEC_USE_COUNT;
133 return -EIO;
134 }
135
136 b1dma_reset(card);
137
138 if ((retval = t1pci_detect(card)) != 0) {
139 if (retval < 6)
140 printk(KERN_NOTICE "%s: NO card at 0x%x (%d)\n",
141 driver->name, card->port, retval);
142 else
143 printk(KERN_NOTICE "%s: card at 0x%x, but cabel not connected or T1 has no power (%d)\n",
144 driver->name, card->port, retval);
145 iounmap(card->mbase);
146 kfree(card->ctrlinfo);
147 kfree(card->dma);
148 kfree(card);
149 MOD_DEC_USE_COUNT;
150 return -EIO;
151 }
152 b1dma_reset(card);
153
154 request_region(p->port, AVMB1_PORTLEN, card->name);
155
156 retval = request_irq(card->irq, b1dma_interrupt, SA_SHIRQ, card->name, card);
157 if (retval) {
158 printk(KERN_ERR "%s: unable to get IRQ %d.\n",
159 driver->name, card->irq);
160 iounmap(card->mbase);
161 release_region(card->port, AVMB1_PORTLEN);
162 kfree(card->ctrlinfo);
163 kfree(card->dma);
164 kfree(card);
165 MOD_DEC_USE_COUNT;
166 return -EBUSY;
167 }
168
169 cinfo->capi_ctrl = di->attach_ctr(driver, card->name, cinfo);
170 if (!cinfo->capi_ctrl) {
171 printk(KERN_ERR "%s: attach controller failed.\n", driver->name);
172 iounmap(card->mbase);
173 free_irq(card->irq, card);
174 release_region(card->port, AVMB1_PORTLEN);
175 kfree(card->ctrlinfo);
176 kfree(card->dma);
177 kfree(card);
178 MOD_DEC_USE_COUNT;
179 return -EBUSY;
180 }
181 card->cardnr = cinfo->capi_ctrl->cnr;
182
183 skb_queue_head_init(&card->dma->send_queue);
184
185 printk(KERN_INFO
186 "%s: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
187 driver->name, card->port, card->irq, card->membase);
188
189 return 0;
190 }
191
192 /* ------------------------------------------------------------- */
193
t1pci_procinfo(struct capi_ctr * ctrl)194 static char *t1pci_procinfo(struct capi_ctr *ctrl)
195 {
196 avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
197
198 if (!cinfo)
199 return "";
200 sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
201 cinfo->cardname[0] ? cinfo->cardname : "-",
202 cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
203 cinfo->card ? cinfo->card->port : 0x0,
204 cinfo->card ? cinfo->card->irq : 0,
205 cinfo->card ? cinfo->card->membase : 0
206 );
207 return cinfo->infobuf;
208 }
209
210 /* ------------------------------------------------------------- */
211
212 static struct capi_driver t1pci_driver = {
213 name: "t1pci",
214 revision: "0.0",
215 load_firmware: b1dma_load_firmware,
216 reset_ctr: b1dma_reset_ctr,
217 remove_ctr: t1pci_remove_ctr,
218 register_appl: b1dma_register_appl,
219 release_appl: b1dma_release_appl,
220 send_message: b1dma_send_message,
221
222 procinfo: t1pci_procinfo,
223 ctr_read_proc: b1dmactl_read_proc,
224 driver_read_proc: 0, /* use standard driver_read_proc */
225
226 add_card: 0, /* no add_card function */
227 };
228
229 static int ncards = 0;
230
t1pci_init(void)231 static int __init t1pci_init(void)
232 {
233 struct capi_driver *driver = &t1pci_driver;
234 struct pci_dev *dev = NULL;
235 char *p;
236 int retval;
237
238 MOD_INC_USE_COUNT;
239
240 if ((p = strchr(revision, ':')) != 0 && p[1]) {
241 strncpy(driver->revision, p + 2, sizeof(driver->revision));
242 driver->revision[sizeof(driver->revision)-1] = 0;
243 if ((p = strchr(driver->revision, '$')) != 0 && p > driver->revision)
244 *(p-1) = 0;
245 }
246
247 printk(KERN_INFO "%s: revision %s\n", driver->name, driver->revision);
248
249 di = attach_capi_driver(driver);
250 if (!di) {
251 printk(KERN_ERR "%s: failed to attach capi_driver\n",
252 driver->name);
253 MOD_DEC_USE_COUNT;
254 return -EIO;
255 }
256
257 while ((dev = pci_find_device(PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, dev))) {
258 struct capicardparams param;
259
260 if (pci_enable_device(dev) < 0) {
261 printk(KERN_ERR "%s: failed to enable AVM-T1-PCI\n",
262 driver->name);
263 continue;
264 }
265 pci_set_master(dev);
266
267 param.port = pci_resource_start(dev, 1);
268 param.irq = dev->irq;
269 param.membase = pci_resource_start(dev, 0);
270
271 printk(KERN_INFO
272 "%s: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
273 driver->name, param.port, param.irq, param.membase);
274 retval = t1pci_add_card(driver, ¶m);
275 if (retval != 0) {
276 printk(KERN_ERR
277 "%s: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
278 driver->name, param.port, param.irq, param.membase);
279 continue;
280 }
281 ncards++;
282 }
283 if (ncards) {
284 printk(KERN_INFO "%s: %d T1-PCI card(s) detected\n",
285 driver->name, ncards);
286 MOD_DEC_USE_COUNT;
287 return 0;
288 }
289 printk(KERN_ERR "%s: NO T1-PCI card detected\n", driver->name);
290 detach_capi_driver(&t1pci_driver);
291 MOD_DEC_USE_COUNT;
292 return -ENODEV;
293 }
294
t1pci_exit(void)295 static void __exit t1pci_exit(void)
296 {
297 detach_capi_driver(&t1pci_driver);
298 }
299
300 module_init(t1pci_init);
301 module_exit(t1pci_exit);
302