1 /* $Id: hysdn_init.c,v 1.6.6.6 2001/09/23 22:24:54 kai Exp $
2 *
3 * Linux driver for HYSDN cards, init functions.
4 *
5 * Author Werner Cornelius (werner@titro.de) for Hypercope GmbH
6 * Copyright 1999 by Werner Cornelius (werner@titro.de)
7 *
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
10 *
11 */
12
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/poll.h>
16 #include <linux/vmalloc.h>
17 #include <linux/slab.h>
18 #include <linux/pci.h>
19
20 #include "hysdn_defs.h"
21
22 static struct pci_device_id hysdn_pci_tbl[] = {
23 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
24 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO, 0, 0, BD_METRO },
25 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
26 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, 0, 0, BD_CHAMP2 },
27 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
28 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, 0, 0, BD_ERGO },
29 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
30 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, 0, 0, BD_ERGO },
31
32 { } /* Terminating entry */
33 };
34 MODULE_DEVICE_TABLE(pci, hysdn_pci_tbl);
35 MODULE_DESCRIPTION("ISDN4Linux: Driver for HYSDN cards");
36 MODULE_AUTHOR("Werner Cornelius");
37 MODULE_LICENSE("GPL");
38
39 static char *hysdn_init_revision = "$Revision: 1.6.6.6 $";
40 static int cardmax; /* number of found cards */
41 hysdn_card *card_root = NULL; /* pointer to first card */
42 static hysdn_card *card_last = NULL; /* pointer to first card */
43
44
45 /****************************************************************************/
46 /* The module startup and shutdown code. Only compiled when used as module. */
47 /* Using the driver as module is always advisable, because the booting */
48 /* image becomes smaller and the driver code is only loaded when needed. */
49 /* Additionally newer versions may be activated without rebooting. */
50 /****************************************************************************/
51
52 /******************************************************/
53 /* extract revision number from string for log output */
54 /******************************************************/
55 char *
56 hysdn_getrev(const char *revision)
57 {
58 char *rev;
59 char *p;
60
61 if ((p = strchr(revision, ':'))) {
62 rev = p + 2;
63 p = strchr(rev, '$');
64 *--p = 0;
65 } else
66 rev = "???";
67 return rev;
68 }
69
70
71 /****************************************************************************/
72 /* init_module is called once when the module is loaded to do all necessary */
73 /* things like autodetect... */
74 /* If the return value of this function is 0 the init has been successful */
75 /* and the module is added to the list in /proc/modules, otherwise an error */
76 /* is assumed and the module will not be kept in memory. */
77 /****************************************************************************/
78
79 static int __devinit hysdn_pci_init_one(struct pci_dev *akt_pcidev,
80 const struct pci_device_id *ent)
81 {
82 hysdn_card *card;
83 int rc;
84
85 rc = pci_enable_device(akt_pcidev);
86 if (rc)
87 return rc;
88
89 if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
90 printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
91 rc = -ENOMEM;
92 goto err_out;
93 }
94 card->myid = cardmax; /* set own id */
95 card->bus = akt_pcidev->bus->number;
96 card->devfn = akt_pcidev->devfn; /* slot + function */
97 card->subsysid = akt_pcidev->subsystem_device;
98 card->irq = akt_pcidev->irq;
99 card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
100 card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
101 card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
102 card->brdtype = BD_NONE; /* unknown */
103 card->debug_flags = DEF_DEB_FLAGS; /* set default debug */
104 card->faxchans = 0; /* default no fax channels */
105 card->bchans = 2; /* and 2 b-channels */
106 card->brdtype = ent->driver_data;
107
108 if (ergo_inithardware(card)) {
109 printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
110 rc = -EBUSY;
111 goto err_out_card;
112 }
113
114 cardmax++;
115 card->next = NULL; /*end of chain */
116 if (card_last)
117 card_last->next = card; /* pointer to next card */
118 else
119 card_root = card;
120 card_last = card; /* new chain end */
121
122 pci_set_drvdata(akt_pcidev, card);
123 return 0;
124
125 err_out_card:
126 kfree(card);
127 err_out:
128 pci_disable_device(akt_pcidev);
129 return rc;
130 }
131
132 static void __devexit hysdn_pci_remove_one(struct pci_dev *akt_pcidev)
133 {
134 hysdn_card *card = pci_get_drvdata(akt_pcidev);
135
136 pci_set_drvdata(akt_pcidev, NULL);
137
138 if (card->stopcard)
139 card->stopcard(card);
140
141 #ifdef CONFIG_HYSDN_CAPI
142 hycapi_capi_release(card);
143 #endif
144
145 if (card->releasehardware)
146 card->releasehardware(card); /* free all hardware resources */
147
148 if (card == card_root) {
149 card_root = card_root->next;
150 if (!card_root)
151 card_last = NULL;
152 } else {
153 hysdn_card *tmp = card_root;
154 while (tmp) {
155 if (tmp->next == card)
156 tmp->next = card->next;
157 card_last = tmp;
158 tmp = tmp->next;
159 }
160 }
161
162 kfree(card);
163 pci_disable_device(akt_pcidev);
164 }
165
166 static struct pci_driver hysdn_pci_driver = {
167 .name = "hysdn",
168 .id_table = hysdn_pci_tbl,
169 .probe = hysdn_pci_init_one,
170 .remove = __devexit_p(hysdn_pci_remove_one),
171 };
172
173 static int hysdn_have_procfs;
174
175 static int __init
176 hysdn_init(void)
177 {
178 char tmp[50];
179 int rc;
180
181 strcpy(tmp, hysdn_init_revision);
182 printk(KERN_NOTICE "HYSDN: module Rev: %s loaded\n", hysdn_getrev(tmp));
183 strcpy(tmp, hysdn_net_revision);
184 printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp));
185
186 rc = pci_register_driver(&hysdn_pci_driver);
187 if (rc)
188 return rc;
189
190 printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax);
191
192 if (!hysdn_procconf_init())
193 hysdn_have_procfs = 1;
194
195 #ifdef CONFIG_HYSDN_CAPI
196 if(cardmax > 0) {
197 if(hycapi_init()) {
198 printk(KERN_ERR "HYCAPI: init failed\n");
199
200 if (hysdn_have_procfs)
201 hysdn_procconf_release();
202
203 pci_unregister_driver(&hysdn_pci_driver);
204 return -ESPIPE;
205 }
206 }
207 #endif /* CONFIG_HYSDN_CAPI */
208
209 return 0; /* no error */
210 } /* init_module */
211
212
213 /***********************************************************************/
214 /* cleanup_module is called when the module is released by the kernel. */
215 /* The routine is only called if init_module has been successful and */
216 /* the module counter has a value of 0. Otherwise this function will */
217 /* not be called. This function must release all resources still allo- */
218 /* cated as after the return from this function the module code will */
219 /* be removed from memory. */
220 /***********************************************************************/
221 static void __exit
222 hysdn_exit(void)
223 {
224 if (hysdn_have_procfs)
225 hysdn_procconf_release();
226
227 pci_unregister_driver(&hysdn_pci_driver);
228
229 #ifdef CONFIG_HYSDN_CAPI
230 hycapi_cleanup();
231 #endif /* CONFIG_HYSDN_CAPI */
232
233 printk(KERN_NOTICE "HYSDN: module unloaded\n");
234 } /* cleanup_module */
235
236 module_init(hysdn_init);
237 module_exit(hysdn_exit);
238
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