summaryrefslogtreecommitdiff
path: root/drivers/isdn/hysdn/hysdn_init.c
blob: 9e01748a176e95c2726c2842ff102bca5fd3c4eb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
/* $Id: hysdn_init.c,v 1.6.6.6 2001/09/23 22:24:54 kai Exp $
 *
 * Linux driver for HYSDN cards, init functions.
 *
 * Author    Werner Cornelius (werner@titro.de) for Hypercope GmbH
 * Copyright 1999 by Werner Cornelius (werner@titro.de)
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/poll.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/pci.h>

#include "hysdn_defs.h"

static struct pci_device_id hysdn_pci_tbl[] = {
	{PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO},
	{PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2},
	{PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO},
	{PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO},
	{ }				/* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, hysdn_pci_tbl);
MODULE_DESCRIPTION("ISDN4Linux: Driver for HYSDN cards");
MODULE_AUTHOR("Werner Cornelius");
MODULE_LICENSE("GPL");

static char *hysdn_init_revision = "$Revision: 1.6.6.6 $";
static int cardmax;		/* number of found cards */
hysdn_card *card_root = NULL;	/* pointer to first card */

/**********************************************/
/* table assigning PCI-sub ids to board types */
/* the last entry contains all 0              */
/**********************************************/
static struct {
	unsigned short subid;		/* PCI sub id */
	unsigned char cardtyp;		/* card type assigned */
} pci_subid_map[] = {

	{
		PCI_SUBDEVICE_ID_HYPERCOPE_METRO, BD_METRO
	},
	{
		PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, BD_CHAMP2
	},
	{
		PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, BD_ERGO
	},
	{
		PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, BD_ERGO
	},
	{
		0, 0
	}			/* terminating entry */
};


/*********************************************************************/
/* search_cards searches for available cards in the pci config data. */
/* If a card is found, the card structure is allocated and the cards */
/* ressources are reserved. cardmax is incremented.                  */
/*********************************************************************/
static void
search_cards(void)
{
	struct pci_dev *akt_pcidev = NULL;
	hysdn_card *card, *card_last;
	int i;

	card_root = NULL;
	card_last = NULL;
	while ((akt_pcidev = pci_find_device(PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
					     akt_pcidev)) != NULL) {
		if (pci_enable_device(akt_pcidev))
			continue;

		if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
			printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
			return;
		}
		card->myid = cardmax;	/* set own id */
		card->bus = akt_pcidev->bus->number;
		card->devfn = akt_pcidev->devfn;	/* slot + function */
		card->subsysid = akt_pcidev->subsystem_device;
		card->irq = akt_pcidev->irq;
		card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
		card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
		card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
		card->brdtype = BD_NONE;	/* unknown */
		card->debug_flags = DEF_DEB_FLAGS;	/* set default debug */
		card->faxchans = 0;	/* default no fax channels */
		card->bchans = 2;	/* and 2 b-channels */
		for (i = 0; pci_subid_map[i].subid; i++)
			if (pci_subid_map[i].subid == card->subsysid) {
				card->brdtype = pci_subid_map[i].cardtyp;
				break;
			}
		if (card->brdtype != BD_NONE) {
			if (ergo_inithardware(card)) {
				printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
				kfree(card);
				continue;
			}
		} else {
			printk(KERN_WARNING "HYSDN: unknown card id 0x%04x\n", card->subsysid);
			kfree(card);	/* release mem */
			continue;
		}
		cardmax++;
		card->next = NULL;	/*end of chain */
		if (card_last)
			card_last->next = card;		/* pointer to next card */
		else
			card_root = card;
		card_last = card;	/* new chain end */
	}			/* device found */
}				/* search_cards */

/************************************************************************************/
/* free_resources frees the acquired PCI resources and returns the allocated memory */
/************************************************************************************/
static void
free_resources(void)
{
	hysdn_card *card;

	while (card_root) {
		card = card_root;
		if (card->releasehardware)
			card->releasehardware(card);	/* free all hardware resources */
		card_root = card_root->next;	/* remove card from chain */
		kfree(card);	/* return mem */

	}			/* while card_root */
}				/* free_resources */

/**************************************************************************/
/* stop_cards disables (hardware resets) all cards and disables interrupt */
/**************************************************************************/
static void
stop_cards(void)
{
	hysdn_card *card;

	card = card_root;	/* first in chain */
	while (card) {
		if (card->stopcard)
			card->stopcard(card);
		card = card->next;	/* remove card from chain */
	}			/* while card */
}				/* stop_cards */


/****************************************************************************/
/* The module startup and shutdown code. Only compiled when used as module. */
/* Using the driver as module is always advisable, because the booting      */
/* image becomes smaller and the driver code is only loaded when needed.    */
/* Additionally newer versions may be activated without rebooting.          */
/****************************************************************************/

/******************************************************/
/* extract revision number from string for log output */
/******************************************************/
char *
hysdn_getrev(const char *revision)
{
	char *rev;
	char *p;

	if ((p = strchr(revision, ':'))) {
		rev = p + 2;
		p = strchr(rev, '$');
		*--p = 0;
	} else
		rev = "???";
	return rev;
}


/****************************************************************************/
/* init_module is called once when the module is loaded to do all necessary */
/* things like autodetect...                                                */
/* If the return value of this function is 0 the init has been successful   */
/* and the module is added to the list in /proc/modules, otherwise an error */
/* is assumed and the module will not be kept in memory.                    */
/****************************************************************************/
static int __init
hysdn_init(void)
{
	char tmp[50];

	strcpy(tmp, hysdn_init_revision);
	printk(KERN_NOTICE "HYSDN: module Rev: %s loaded\n", hysdn_getrev(tmp));
	strcpy(tmp, hysdn_net_revision);
	printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp));
	search_cards();
	printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax);

	if (hysdn_procconf_init()) {
		free_resources();	/* proc file_sys not created */
		return (-1);
	}
#ifdef CONFIG_HYSDN_CAPI
	if(cardmax > 0) {
		if(hycapi_init()) {
			printk(KERN_ERR "HYCAPI: init failed\n");
			return(-1);
		}
	}
#endif /* CONFIG_HYSDN_CAPI */
	return (0);		/* no error */
}				/* init_module */


/***********************************************************************/
/* cleanup_module is called when the module is released by the kernel. */
/* The routine is only called if init_module has been successful and   */
/* the module counter has a value of 0. Otherwise this function will   */
/* not be called. This function must release all resources still allo- */
/* cated as after the return from this function the module code will   */
/* be removed from memory.                                             */
/***********************************************************************/
static void __exit
hysdn_exit(void)
{
#ifdef CONFIG_HYSDN_CAPI
	hysdn_card *card;
#endif /* CONFIG_HYSDN_CAPI */
	stop_cards();
#ifdef CONFIG_HYSDN_CAPI
	card = card_root;	/* first in chain */
	while (card) {
		hycapi_capi_release(card);
		card = card->next;	/* remove card from chain */
	}			/* while card */
	hycapi_cleanup();
#endif /* CONFIG_HYSDN_CAPI */
	hysdn_procconf_release();
	free_resources();
	printk(KERN_NOTICE "HYSDN: module unloaded\n");
}				/* cleanup_module */

module_init(hysdn_init);
module_exit(hysdn_exit);