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1da177e4 LT |
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 | ||
1da177e4 LT |
13 | #include <linux/module.h> |
14 | #include <linux/init.h> | |
1da177e4 LT |
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, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO}, | |
24 | {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2}, | |
25 | {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO}, | |
26 | {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO}, | |
27 | { } /* Terminating entry */ | |
28 | }; | |
29 | MODULE_DEVICE_TABLE(pci, hysdn_pci_tbl); | |
30 | MODULE_DESCRIPTION("ISDN4Linux: Driver for HYSDN cards"); | |
31 | MODULE_AUTHOR("Werner Cornelius"); | |
32 | MODULE_LICENSE("GPL"); | |
33 | ||
34 | static char *hysdn_init_revision = "$Revision: 1.6.6.6 $"; | |
aade0e82 | 35 | static int cardmax; /* number of found cards */ |
1da177e4 LT |
36 | hysdn_card *card_root = NULL; /* pointer to first card */ |
37 | ||
38 | /**********************************************/ | |
39 | /* table assigning PCI-sub ids to board types */ | |
40 | /* the last entry contains all 0 */ | |
41 | /**********************************************/ | |
42 | static struct { | |
c721bcce AM |
43 | unsigned short subid; /* PCI sub id */ |
44 | unsigned char cardtyp; /* card type assigned */ | |
1da177e4 LT |
45 | } pci_subid_map[] = { |
46 | ||
47 | { | |
48 | PCI_SUBDEVICE_ID_HYPERCOPE_METRO, BD_METRO | |
49 | }, | |
50 | { | |
51 | PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, BD_CHAMP2 | |
52 | }, | |
53 | { | |
54 | PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, BD_ERGO | |
55 | }, | |
56 | { | |
57 | PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, BD_ERGO | |
58 | }, | |
59 | { | |
60 | 0, 0 | |
61 | } /* terminating entry */ | |
62 | }; | |
63 | ||
64 | ||
65 | /*********************************************************************/ | |
66 | /* search_cards searches for available cards in the pci config data. */ | |
67 | /* If a card is found, the card structure is allocated and the cards */ | |
68 | /* ressources are reserved. cardmax is incremented. */ | |
69 | /*********************************************************************/ | |
70 | static void | |
71 | search_cards(void) | |
72 | { | |
73 | struct pci_dev *akt_pcidev = NULL; | |
74 | hysdn_card *card, *card_last; | |
75 | int i; | |
76 | ||
77 | card_root = NULL; | |
78 | card_last = NULL; | |
79 | while ((akt_pcidev = pci_find_device(PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, | |
80 | akt_pcidev)) != NULL) { | |
81 | if (pci_enable_device(akt_pcidev)) | |
82 | continue; | |
83 | ||
84 | if (!(card = kmalloc(sizeof(hysdn_card), GFP_KERNEL))) { | |
85 | printk(KERN_ERR "HYSDN: unable to alloc device mem \n"); | |
86 | return; | |
87 | } | |
88 | memset(card, 0, sizeof(hysdn_card)); | |
89 | card->myid = cardmax; /* set own id */ | |
90 | card->bus = akt_pcidev->bus->number; | |
91 | card->devfn = akt_pcidev->devfn; /* slot + function */ | |
92 | card->subsysid = akt_pcidev->subsystem_device; | |
93 | card->irq = akt_pcidev->irq; | |
94 | card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE); | |
95 | card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE); | |
96 | card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE); | |
97 | card->brdtype = BD_NONE; /* unknown */ | |
98 | card->debug_flags = DEF_DEB_FLAGS; /* set default debug */ | |
99 | card->faxchans = 0; /* default no fax channels */ | |
100 | card->bchans = 2; /* and 2 b-channels */ | |
101 | for (i = 0; pci_subid_map[i].subid; i++) | |
102 | if (pci_subid_map[i].subid == card->subsysid) { | |
103 | card->brdtype = pci_subid_map[i].cardtyp; | |
104 | break; | |
105 | } | |
106 | if (card->brdtype != BD_NONE) { | |
107 | if (ergo_inithardware(card)) { | |
108 | printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase); | |
109 | kfree(card); | |
110 | continue; | |
111 | } | |
112 | } else { | |
113 | printk(KERN_WARNING "HYSDN: unknown card id 0x%04x\n", card->subsysid); | |
114 | kfree(card); /* release mem */ | |
115 | continue; | |
116 | } | |
117 | cardmax++; | |
118 | card->next = NULL; /*end of chain */ | |
119 | if (card_last) | |
120 | card_last->next = card; /* pointer to next card */ | |
121 | else | |
122 | card_root = card; | |
123 | card_last = card; /* new chain end */ | |
124 | } /* device found */ | |
125 | } /* search_cards */ | |
126 | ||
127 | /************************************************************************************/ | |
128 | /* free_resources frees the acquired PCI resources and returns the allocated memory */ | |
129 | /************************************************************************************/ | |
130 | static void | |
131 | free_resources(void) | |
132 | { | |
133 | hysdn_card *card; | |
134 | ||
135 | while (card_root) { | |
136 | card = card_root; | |
137 | if (card->releasehardware) | |
138 | card->releasehardware(card); /* free all hardware resources */ | |
139 | card_root = card_root->next; /* remove card from chain */ | |
140 | kfree(card); /* return mem */ | |
141 | ||
142 | } /* while card_root */ | |
143 | } /* free_resources */ | |
144 | ||
145 | /**************************************************************************/ | |
146 | /* stop_cards disables (hardware resets) all cards and disables interrupt */ | |
147 | /**************************************************************************/ | |
148 | static void | |
149 | stop_cards(void) | |
150 | { | |
151 | hysdn_card *card; | |
152 | ||
153 | card = card_root; /* first in chain */ | |
154 | while (card) { | |
155 | if (card->stopcard) | |
156 | card->stopcard(card); | |
157 | card = card->next; /* remove card from chain */ | |
158 | } /* while card */ | |
159 | } /* stop_cards */ | |
160 | ||
161 | ||
162 | /****************************************************************************/ | |
163 | /* The module startup and shutdown code. Only compiled when used as module. */ | |
164 | /* Using the driver as module is always advisable, because the booting */ | |
165 | /* image becomes smaller and the driver code is only loaded when needed. */ | |
166 | /* Additionally newer versions may be activated without rebooting. */ | |
167 | /****************************************************************************/ | |
168 | ||
169 | /******************************************************/ | |
170 | /* extract revision number from string for log output */ | |
171 | /******************************************************/ | |
172 | char * | |
173 | hysdn_getrev(const char *revision) | |
174 | { | |
175 | char *rev; | |
176 | char *p; | |
177 | ||
178 | if ((p = strchr(revision, ':'))) { | |
179 | rev = p + 2; | |
180 | p = strchr(rev, '$'); | |
181 | *--p = 0; | |
182 | } else | |
183 | rev = "???"; | |
184 | return rev; | |
185 | } | |
186 | ||
187 | ||
188 | /****************************************************************************/ | |
189 | /* init_module is called once when the module is loaded to do all necessary */ | |
190 | /* things like autodetect... */ | |
191 | /* If the return value of this function is 0 the init has been successful */ | |
192 | /* and the module is added to the list in /proc/modules, otherwise an error */ | |
193 | /* is assumed and the module will not be kept in memory. */ | |
194 | /****************************************************************************/ | |
195 | static int __init | |
196 | hysdn_init(void) | |
197 | { | |
198 | char tmp[50]; | |
199 | ||
200 | strcpy(tmp, hysdn_init_revision); | |
201 | printk(KERN_NOTICE "HYSDN: module Rev: %s loaded\n", hysdn_getrev(tmp)); | |
202 | strcpy(tmp, hysdn_net_revision); | |
203 | printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp)); | |
204 | search_cards(); | |
205 | printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax); | |
206 | ||
207 | if (hysdn_procconf_init()) { | |
208 | free_resources(); /* proc file_sys not created */ | |
209 | return (-1); | |
210 | } | |
211 | #ifdef CONFIG_HYSDN_CAPI | |
212 | if(cardmax > 0) { | |
213 | if(hycapi_init()) { | |
214 | printk(KERN_ERR "HYCAPI: init failed\n"); | |
215 | return(-1); | |
216 | } | |
217 | } | |
218 | #endif /* CONFIG_HYSDN_CAPI */ | |
219 | return (0); /* no error */ | |
220 | } /* init_module */ | |
221 | ||
222 | ||
223 | /***********************************************************************/ | |
224 | /* cleanup_module is called when the module is released by the kernel. */ | |
225 | /* The routine is only called if init_module has been successful and */ | |
226 | /* the module counter has a value of 0. Otherwise this function will */ | |
227 | /* not be called. This function must release all resources still allo- */ | |
228 | /* cated as after the return from this function the module code will */ | |
229 | /* be removed from memory. */ | |
230 | /***********************************************************************/ | |
231 | static void __exit | |
232 | hysdn_exit(void) | |
233 | { | |
234 | #ifdef CONFIG_HYSDN_CAPI | |
235 | hysdn_card *card; | |
236 | #endif /* CONFIG_HYSDN_CAPI */ | |
237 | stop_cards(); | |
238 | #ifdef CONFIG_HYSDN_CAPI | |
239 | card = card_root; /* first in chain */ | |
240 | while (card) { | |
241 | hycapi_capi_release(card); | |
242 | card = card->next; /* remove card from chain */ | |
243 | } /* while card */ | |
244 | hycapi_cleanup(); | |
245 | #endif /* CONFIG_HYSDN_CAPI */ | |
246 | hysdn_procconf_release(); | |
247 | free_resources(); | |
248 | printk(KERN_NOTICE "HYSDN: module unloaded\n"); | |
249 | } /* cleanup_module */ | |
250 | ||
251 | module_init(hysdn_init); | |
252 | module_exit(hysdn_exit); |