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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[] = { | |
60cc5147 JG |
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 | ||
1da177e4 LT |
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 | ||
aade0e82 | 39 | static int cardmax; /* number of found cards */ |
1da177e4 | 40 | hysdn_card *card_root = NULL; /* pointer to first card */ |
60cc5147 | 41 | static hysdn_card *card_last = NULL; /* pointer to first card */ |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | /****************************************************************************/ | |
60cc5147 | 58 | |
ed5a84cd GKH |
59 | static int hysdn_pci_init_one(struct pci_dev *akt_pcidev, |
60 | const struct pci_device_id *ent) | |
60cc5147 JG |
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 | ||
ed5a84cd | 112 | static void hysdn_pci_remove_one(struct pci_dev *akt_pcidev) |
60cc5147 JG |
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, | |
ed5a84cd | 150 | .remove = hysdn_pci_remove_one, |
60cc5147 JG |
151 | }; |
152 | ||
153 | static int hysdn_have_procfs; | |
154 | ||
1da177e4 LT |
155 | static int __init |
156 | hysdn_init(void) | |
157 | { | |
60cc5147 | 158 | int rc; |
1da177e4 | 159 | |
cd141eee | 160 | printk(KERN_NOTICE "HYSDN: module loaded\n"); |
60cc5147 JG |
161 | |
162 | rc = pci_register_driver(&hysdn_pci_driver); | |
163 | if (rc) | |
164 | return rc; | |
165 | ||
1da177e4 LT |
166 | printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax); |
167 | ||
60cc5147 JG |
168 | if (!hysdn_procconf_init()) |
169 | hysdn_have_procfs = 1; | |
170 | ||
1da177e4 | 171 | #ifdef CONFIG_HYSDN_CAPI |
475be4d8 JP |
172 | if (cardmax > 0) { |
173 | if (hycapi_init()) { | |
1da177e4 | 174 | printk(KERN_ERR "HYCAPI: init failed\n"); |
60cc5147 JG |
175 | |
176 | if (hysdn_have_procfs) | |
177 | hysdn_procconf_release(); | |
178 | ||
179 | pci_unregister_driver(&hysdn_pci_driver); | |
180 | return -ESPIPE; | |
1da177e4 LT |
181 | } |
182 | } | |
183 | #endif /* CONFIG_HYSDN_CAPI */ | |
60cc5147 JG |
184 | |
185 | return 0; /* no error */ | |
1da177e4 LT |
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 | |
198 | hysdn_exit(void) | |
199 | { | |
60cc5147 JG |
200 | if (hysdn_have_procfs) |
201 | hysdn_procconf_release(); | |
202 | ||
203 | pci_unregister_driver(&hysdn_pci_driver); | |
204 | ||
1da177e4 | 205 | #ifdef CONFIG_HYSDN_CAPI |
1da177e4 LT |
206 | hycapi_cleanup(); |
207 | #endif /* CONFIG_HYSDN_CAPI */ | |
60cc5147 | 208 | |
1da177e4 LT |
209 | printk(KERN_NOTICE "HYSDN: module unloaded\n"); |
210 | } /* cleanup_module */ | |
211 | ||
212 | module_init(hysdn_init); | |
213 | module_exit(hysdn_exit); |