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/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 <linux/init.h>
22 #include <asm/io.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 #undef CONFIG_T1PCI_DEBUG
29 #undef CONFIG_T1PCI_POLLDEBUG
30 
31 /* ------------------------------------------------------------- */
32 static char *revision = "$Revision: 1.1.2.2 $";
33 /* ------------------------------------------------------------- */
34 
35 static struct pci_device_id t1pci_pci_tbl[] = {
36 	{ PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_T1, PCI_ANY_ID, PCI_ANY_ID },
37 	{ }				/* Terminating entry */
38 };
39 
40 MODULE_DEVICE_TABLE(pci, t1pci_pci_tbl);
41 MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 PCI card");
42 MODULE_AUTHOR("Carsten Paeth");
43 MODULE_LICENSE("GPL");
44 
45 /* ------------------------------------------------------------- */
46 
47 static char *t1pci_procinfo(struct capi_ctr *ctrl);
48 
t1pci_add_card(struct capicardparams * p,struct pci_dev * pdev)49 static int t1pci_add_card(struct capicardparams *p, struct pci_dev *pdev)
50 {
51 	avmcard *card;
52 	avmctrl_info *cinfo;
53 	int retval;
54 
55 	card = b1_alloc_card(1);
56 	if (!card) {
57 		printk(KERN_WARNING "t1pci: no memory.\n");
58 		retval = -ENOMEM;
59 		goto err;
60 	}
61 
62 	card->dma = avmcard_dma_alloc("t1pci", pdev, 2048 + 128, 2048 + 128);
63 	if (!card->dma) {
64 		printk(KERN_WARNING "t1pci: no memory.\n");
65 		retval = -ENOMEM;
66 		goto err_free;
67 	}
68 
69 	cinfo = card->ctrlinfo;
70 	sprintf(card->name, "t1pci-%x", p->port);
71 	card->port = p->port;
72 	card->irq = p->irq;
73 	card->membase = p->membase;
74 	card->cardtype = avm_t1pci;
75 
76 	if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
77 		printk(KERN_WARNING "t1pci: ports 0x%03x-0x%03x in use.\n",
78 		       card->port, card->port + AVMB1_PORTLEN);
79 		retval = -EBUSY;
80 		goto err_free_dma;
81 	}
82 
83 	card->mbase = ioremap(card->membase, 64);
84 	if (!card->mbase) {
85 		printk(KERN_NOTICE "t1pci: can't remap memory at 0x%lx\n",
86 		       card->membase);
87 		retval = -EIO;
88 		goto err_release_region;
89 	}
90 
91 	b1dma_reset(card);
92 
93 	retval = t1pci_detect(card);
94 	if (retval != 0) {
95 		if (retval < 6)
96 			printk(KERN_NOTICE "t1pci: NO card at 0x%x (%d)\n",
97 			       card->port, retval);
98 		else
99 			printk(KERN_NOTICE "t1pci: card at 0x%x, but cable not connected or T1 has no power (%d)\n",
100 			       card->port, retval);
101 		retval = -EIO;
102 		goto err_unmap;
103 	}
104 	b1dma_reset(card);
105 
106 	retval = request_irq(card->irq, b1dma_interrupt, IRQF_SHARED, card->name, card);
107 	if (retval) {
108 		printk(KERN_ERR "t1pci: unable to get IRQ %d.\n", card->irq);
109 		retval = -EBUSY;
110 		goto err_unmap;
111 	}
112 
113 	cinfo->capi_ctrl.owner         = THIS_MODULE;
114 	cinfo->capi_ctrl.driver_name   = "t1pci";
115 	cinfo->capi_ctrl.driverdata    = cinfo;
116 	cinfo->capi_ctrl.register_appl = b1dma_register_appl;
117 	cinfo->capi_ctrl.release_appl  = b1dma_release_appl;
118 	cinfo->capi_ctrl.send_message  = b1dma_send_message;
119 	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
120 	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
121 	cinfo->capi_ctrl.procinfo      = t1pci_procinfo;
122 	cinfo->capi_ctrl.proc_show     = b1dma_proc_show;
123 	strcpy(cinfo->capi_ctrl.name, card->name);
124 
125 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
126 	if (retval) {
127 		printk(KERN_ERR "t1pci: attach controller failed.\n");
128 		retval = -EBUSY;
129 		goto err_free_irq;
130 	}
131 	card->cardnr = cinfo->capi_ctrl.cnr;
132 
133 	printk(KERN_INFO "t1pci: AVM T1 PCI at i/o %#x, irq %d, mem %#lx\n",
134 	       card->port, card->irq, card->membase);
135 
136 	pci_set_drvdata(pdev, card);
137 	return 0;
138 
139 err_free_irq:
140 	free_irq(card->irq, card);
141 err_unmap:
142 	iounmap(card->mbase);
143 err_release_region:
144 	release_region(card->port, AVMB1_PORTLEN);
145 err_free_dma:
146 	avmcard_dma_free(card->dma);
147 err_free:
148 	b1_free_card(card);
149 err:
150 	return retval;
151 }
152 
153 /* ------------------------------------------------------------- */
154 
t1pci_remove(struct pci_dev * pdev)155 static void t1pci_remove(struct pci_dev *pdev)
156 {
157 	avmcard *card = pci_get_drvdata(pdev);
158 	avmctrl_info *cinfo = card->ctrlinfo;
159 
160 	b1dma_reset(card);
161 
162 	detach_capi_ctr(&cinfo->capi_ctrl);
163 	free_irq(card->irq, card);
164 	iounmap(card->mbase);
165 	release_region(card->port, AVMB1_PORTLEN);
166 	avmcard_dma_free(card->dma);
167 	b1_free_card(card);
168 }
169 
170 /* ------------------------------------------------------------- */
171 
t1pci_procinfo(struct capi_ctr * ctrl)172 static char *t1pci_procinfo(struct capi_ctr *ctrl)
173 {
174 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
175 
176 	if (!cinfo)
177 		return "";
178 	sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
179 		cinfo->cardname[0] ? cinfo->cardname : "-",
180 		cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
181 		cinfo->card ? cinfo->card->port : 0x0,
182 		cinfo->card ? cinfo->card->irq : 0,
183 		cinfo->card ? cinfo->card->membase : 0
184 		);
185 	return cinfo->infobuf;
186 }
187 
188 /* ------------------------------------------------------------- */
189 
t1pci_probe(struct pci_dev * dev,const struct pci_device_id * ent)190 static int t1pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
191 {
192 	struct capicardparams param;
193 	int retval;
194 
195 	if (pci_enable_device(dev) < 0) {
196 		printk(KERN_ERR	"t1pci: failed to enable AVM-T1-PCI\n");
197 		return -ENODEV;
198 	}
199 	pci_set_master(dev);
200 
201 	param.port = pci_resource_start(dev, 1);
202 	param.irq = dev->irq;
203 	param.membase = pci_resource_start(dev, 0);
204 
205 	printk(KERN_INFO "t1pci: PCI BIOS reports AVM-T1-PCI at i/o %#x, irq %d, mem %#x\n",
206 	       param.port, param.irq, param.membase);
207 
208 	retval = t1pci_add_card(&param, dev);
209 	if (retval != 0) {
210 		printk(KERN_ERR "t1pci: no AVM-T1-PCI at i/o %#x, irq %d detected, mem %#x\n",
211 		       param.port, param.irq, param.membase);
212 		pci_disable_device(dev);
213 		return -ENODEV;
214 	}
215 	return 0;
216 }
217 
218 static struct pci_driver t1pci_pci_driver = {
219 	.name           = "t1pci",
220 	.id_table       = t1pci_pci_tbl,
221 	.probe          = t1pci_probe,
222 	.remove         = t1pci_remove,
223 };
224 
225 static struct capi_driver capi_driver_t1pci = {
226 	.name		= "t1pci",
227 	.revision	= "1.0",
228 };
229 
t1pci_init(void)230 static int __init t1pci_init(void)
231 {
232 	char *p;
233 	char rev[32];
234 	int err;
235 
236 	if ((p = strchr(revision, ':')) != NULL && p[1]) {
237 		strlcpy(rev, p + 2, 32);
238 		if ((p = strchr(rev, '$')) != NULL && p > rev)
239 			*(p - 1) = 0;
240 	} else
241 		strcpy(rev, "1.0");
242 
243 	err = pci_register_driver(&t1pci_pci_driver);
244 	if (!err) {
245 		strlcpy(capi_driver_t1pci.revision, rev, 32);
246 		register_capi_driver(&capi_driver_t1pci);
247 		printk(KERN_INFO "t1pci: revision %s\n", rev);
248 	}
249 	return err;
250 }
251 
t1pci_exit(void)252 static void __exit t1pci_exit(void)
253 {
254 	unregister_capi_driver(&capi_driver_t1pci);
255 	pci_unregister_driver(&t1pci_pci_driver);
256 }
257 
258 module_init(t1pci_init);
259 module_exit(t1pci_exit);
260