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 int cardmax; /* number of found cards */
40 hysdn_card *card_root = NULL; /* pointer to first card */
41 static hysdn_card *card_last = NULL; /* pointer to first card */
42
43
44 /****************************************************************************/
45 /* The module startup and shutdown code. Only compiled when used as module. */
46 /* Using the driver as module is always advisable, because the booting */
47 /* image becomes smaller and the driver code is only loaded when needed. */
48 /* Additionally newer versions may be activated without rebooting. */
49 /****************************************************************************/
50
51 /****************************************************************************/
52 /* init_module is called once when the module is loaded to do all necessary */
53 /* things like autodetect... */
54 /* If the return value of this function is 0 the init has been successful */
55 /* and the module is added to the list in /proc/modules, otherwise an error */
56 /* is assumed and the module will not be kept in memory. */
57 /****************************************************************************/
58
hysdn_pci_init_one(struct pci_dev * akt_pcidev,const struct pci_device_id * ent)59 static int hysdn_pci_init_one(struct pci_dev *akt_pcidev,
60 const struct pci_device_id *ent)
61 {
62 hysdn_card *card;
63 int rc;
64
65 rc = pci_enable_device(akt_pcidev);
66 if (rc)
67 return rc;
68
69 if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
70 printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
71 rc = -ENOMEM;
72 goto err_out;
73 }
74 card->myid = cardmax; /* set own id */
75 card->bus = akt_pcidev->bus->number;
76 card->devfn = akt_pcidev->devfn; /* slot + function */
77 card->subsysid = akt_pcidev->subsystem_device;
78 card->irq = akt_pcidev->irq;
79 card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
80 card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
81 card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
82 card->brdtype = BD_NONE; /* unknown */
83 card->debug_flags = DEF_DEB_FLAGS; /* set default debug */
84 card->faxchans = 0; /* default no fax channels */
85 card->bchans = 2; /* and 2 b-channels */
86 card->brdtype = ent->driver_data;
87
88 if (ergo_inithardware(card)) {
89 printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
90 rc = -EBUSY;
91 goto err_out_card;
92 }
93
94 cardmax++;
95 card->next = NULL; /*end of chain */
96 if (card_last)
97 card_last->next = card; /* pointer to next card */
98 else
99 card_root = card;
100 card_last = card; /* new chain end */
101
102 pci_set_drvdata(akt_pcidev, card);
103 return 0;
104
105 err_out_card:
106 kfree(card);
107 err_out:
108 pci_disable_device(akt_pcidev);
109 return rc;
110 }
111
hysdn_pci_remove_one(struct pci_dev * akt_pcidev)112 static void hysdn_pci_remove_one(struct pci_dev *akt_pcidev)
113 {
114 hysdn_card *card = pci_get_drvdata(akt_pcidev);
115
116 pci_set_drvdata(akt_pcidev, NULL);
117
118 if (card->stopcard)
119 card->stopcard(card);
120
121 #ifdef CONFIG_HYSDN_CAPI
122 hycapi_capi_release(card);
123 #endif
124
125 if (card->releasehardware)
126 card->releasehardware(card); /* free all hardware resources */
127
128 if (card == card_root) {
129 card_root = card_root->next;
130 if (!card_root)
131 card_last = NULL;
132 } else {
133 hysdn_card *tmp = card_root;
134 while (tmp) {
135 if (tmp->next == card)
136 tmp->next = card->next;
137 card_last = tmp;
138 tmp = tmp->next;
139 }
140 }
141
142 kfree(card);
143 pci_disable_device(akt_pcidev);
144 }
145
146 static struct pci_driver hysdn_pci_driver = {
147 .name = "hysdn",
148 .id_table = hysdn_pci_tbl,
149 .probe = hysdn_pci_init_one,
150 .remove = hysdn_pci_remove_one,
151 };
152
153 static int hysdn_have_procfs;
154
155 static int __init
hysdn_init(void)156 hysdn_init(void)
157 {
158 int rc;
159
160 printk(KERN_NOTICE "HYSDN: module loaded\n");
161
162 rc = pci_register_driver(&hysdn_pci_driver);
163 if (rc)
164 return rc;
165
166 printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax);
167
168 if (!hysdn_procconf_init())
169 hysdn_have_procfs = 1;
170
171 #ifdef CONFIG_HYSDN_CAPI
172 if (cardmax > 0) {
173 if (hycapi_init()) {
174 printk(KERN_ERR "HYCAPI: init failed\n");
175
176 if (hysdn_have_procfs)
177 hysdn_procconf_release();
178
179 pci_unregister_driver(&hysdn_pci_driver);
180 return -ESPIPE;
181 }
182 }
183 #endif /* CONFIG_HYSDN_CAPI */
184
185 return 0; /* no error */
186 } /* init_module */
187
188
189 /***********************************************************************/
190 /* cleanup_module is called when the module is released by the kernel. */
191 /* The routine is only called if init_module has been successful and */
192 /* the module counter has a value of 0. Otherwise this function will */
193 /* not be called. This function must release all resources still allo- */
194 /* cated as after the return from this function the module code will */
195 /* be removed from memory. */
196 /***********************************************************************/
197 static void __exit
hysdn_exit(void)198 hysdn_exit(void)
199 {
200 if (hysdn_have_procfs)
201 hysdn_procconf_release();
202
203 pci_unregister_driver(&hysdn_pci_driver);
204
205 #ifdef CONFIG_HYSDN_CAPI
206 hycapi_cleanup();
207 #endif /* CONFIG_HYSDN_CAPI */
208
209 printk(KERN_NOTICE "HYSDN: module unloaded\n");
210 } /* cleanup_module */
211
212 module_init(hysdn_init);
213 module_exit(hysdn_exit);
214