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1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | An elsa_cs PCMCIA client driver | |
4 | ||
5 | This driver is for the Elsa PCM ISDN Cards, i.e. the MicroLink | |
6 | ||
7 | ||
8 | The contents of this file are subject to the Mozilla Public | |
9 | License Version 1.1 (the "License"); you may not use this file | |
10 | except in compliance with the License. You may obtain a copy of | |
11 | the License at http://www.mozilla.org/MPL/ | |
12 | ||
13 | Software distributed under the License is distributed on an "AS | |
14 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
15 | implied. See the License for the specific language governing | |
16 | rights and limitations under the License. | |
17 | ||
18 | The initial developer of the original code is David A. Hinds | |
19 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
20 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
21 | ||
22 | Modifications from dummy_cs.c are Copyright (C) 1999-2001 Klaus | |
23 | Lichtenwalder <Lichtenwalder@ACM.org>. All Rights Reserved. | |
24 | ||
25 | Alternatively, the contents of this file may be used under the | |
26 | terms of the GNU General Public License version 2 (the "GPL"), in | |
27 | which case the provisions of the GPL are applicable instead of the | |
28 | above. If you wish to allow the use of your version of this file | |
29 | only under the terms of the GPL and not to allow others to use | |
30 | your version of this file under the MPL, indicate your decision | |
31 | by deleting the provisions above and replace them with the notice | |
32 | and other provisions required by the GPL. If you do not delete | |
33 | the provisions above, a recipient may use your version of this | |
34 | file under either the MPL or the GPL. | |
35 | ||
36 | ======================================================================*/ | |
37 | ||
38 | #include <linux/module.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/init.h> | |
1da177e4 LT |
41 | #include <linux/ptrace.h> |
42 | #include <linux/slab.h> | |
43 | #include <linux/string.h> | |
44 | #include <linux/timer.h> | |
45 | #include <linux/ioport.h> | |
46 | #include <asm/io.h> | |
47 | #include <asm/system.h> | |
48 | ||
1da177e4 LT |
49 | #include <pcmcia/cistpl.h> |
50 | #include <pcmcia/cisreg.h> | |
51 | #include <pcmcia/ds.h> | |
52 | #include "hisax_cfg.h" | |
53 | ||
54 | MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards"); | |
55 | MODULE_AUTHOR("Klaus Lichtenwalder"); | |
56 | MODULE_LICENSE("Dual MPL/GPL"); | |
57 | ||
1da177e4 LT |
58 | |
59 | /*====================================================================*/ | |
60 | ||
61 | /* Parameters that can be set with 'insmod' */ | |
62 | ||
63 | static int protocol = 2; /* EURO-ISDN Default */ | |
64 | module_param(protocol, int, 0); | |
65 | ||
66 | /*====================================================================*/ | |
67 | ||
68 | /* | |
69 | The event() function is this driver's Card Services event handler. | |
70 | It will be called by Card Services when an appropriate card status | |
71 | event is received. The config() and release() entry points are | |
72 | used to configure or release a socket, in response to card insertion | |
73 | and ejection events. They are invoked from the elsa_cs event | |
74 | handler. | |
75 | */ | |
76 | ||
f61bb62e | 77 | static int elsa_cs_config(struct pcmcia_device *link) __devinit ; |
fba395ee | 78 | static void elsa_cs_release(struct pcmcia_device *link); |
1da177e4 LT |
79 | |
80 | /* | |
81 | The attach() and detach() entry points are used to create and destroy | |
82 | "instances" of the driver, where each instance represents everything | |
83 | needed to manage one actual PCMCIA card. | |
84 | */ | |
85 | ||
f61bb62e | 86 | static void elsa_cs_detach(struct pcmcia_device *p_dev) __devexit; |
1da177e4 | 87 | |
1da177e4 | 88 | typedef struct local_info_t { |
fd238232 | 89 | struct pcmcia_device *p_dev; |
1da177e4 LT |
90 | int busy; |
91 | int cardnr; | |
92 | } local_info_t; | |
93 | ||
94 | /*====================================================================== | |
95 | ||
96 | elsa_cs_attach() creates an "instance" of the driver, allocatingx | |
97 | local data structures for one device. The device is registered | |
98 | with Card Services. | |
99 | ||
100 | The dev_link structure is initialized, but we don't actually | |
101 | configure the card at this point -- we wait until we receive a | |
102 | card insertion event. | |
103 | ||
104 | ======================================================================*/ | |
105 | ||
f61bb62e | 106 | static int __devinit elsa_cs_probe(struct pcmcia_device *link) |
1da177e4 | 107 | { |
1da177e4 | 108 | local_info_t *local; |
1da177e4 | 109 | |
e773cfe1 | 110 | dev_dbg(&link->dev, "elsa_cs_attach()\n"); |
1da177e4 LT |
111 | |
112 | /* Allocate space for private device-specific data */ | |
41f96935 | 113 | local = kzalloc(sizeof(local_info_t), GFP_KERNEL); |
f8cfa618 | 114 | if (!local) return -ENOMEM; |
fd238232 | 115 | |
fba395ee | 116 | local->p_dev = link; |
fd238232 DB |
117 | link->priv = local; |
118 | ||
1da177e4 | 119 | local->cardnr = -1; |
1da177e4 | 120 | |
15b99ac1 | 121 | return elsa_cs_config(link); |
1da177e4 LT |
122 | } /* elsa_cs_attach */ |
123 | ||
124 | /*====================================================================== | |
125 | ||
126 | This deletes a driver "instance". The device is de-registered | |
127 | with Card Services. If it has been released, all local data | |
128 | structures are freed. Otherwise, the structures will be freed | |
129 | when the device is released. | |
130 | ||
131 | ======================================================================*/ | |
132 | ||
f61bb62e | 133 | static void __devexit elsa_cs_detach(struct pcmcia_device *link) |
1da177e4 | 134 | { |
e2d40963 | 135 | local_info_t *info = link->priv; |
1da177e4 | 136 | |
e773cfe1 | 137 | dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link); |
1da177e4 | 138 | |
e2d40963 DB |
139 | info->busy = 1; |
140 | elsa_cs_release(link); | |
1da177e4 | 141 | |
e2d40963 | 142 | kfree(info); |
1da177e4 LT |
143 | } /* elsa_cs_detach */ |
144 | ||
145 | /*====================================================================== | |
146 | ||
147 | elsa_cs_config() is scheduled to run after a CARD_INSERTION event | |
148 | is received, to configure the PCMCIA socket, and to make the | |
149 | device available to the system. | |
150 | ||
151 | ======================================================================*/ | |
1da177e4 | 152 | |
00990e7c | 153 | static int elsa_cs_configcheck(struct pcmcia_device *p_dev, void *priv_data) |
1da177e4 | 154 | { |
5fcd4da0 DB |
155 | int j; |
156 | ||
90abdc3b | 157 | p_dev->io_lines = 3; |
00990e7c DB |
158 | p_dev->resource[0]->end = 8; |
159 | p_dev->resource[0]->flags &= IO_DATA_PATH_WIDTH; | |
160 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; | |
90abdc3b | 161 | |
00990e7c | 162 | if ((p_dev->resource[0]->end) && p_dev->resource[0]->start) { |
5fcd4da0 | 163 | printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n"); |
90abdc3b | 164 | if (!pcmcia_request_io(p_dev)) |
5fcd4da0 DB |
165 | return 0; |
166 | } else { | |
167 | printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n"); | |
5fcd4da0 | 168 | for (j = 0x2f0; j > 0x100; j -= 0x10) { |
90abdc3b DB |
169 | p_dev->resource[0]->start = j; |
170 | if (!pcmcia_request_io(p_dev)) | |
5fcd4da0 DB |
171 | return 0; |
172 | } | |
173 | } | |
174 | return -ENODEV; | |
1da177e4 LT |
175 | } |
176 | ||
f61bb62e | 177 | static int __devinit elsa_cs_config(struct pcmcia_device *link) |
1da177e4 | 178 | { |
1da177e4 | 179 | local_info_t *dev; |
e773cfe1 | 180 | int i; |
1da177e4 LT |
181 | IsdnCard_t icard; |
182 | ||
e773cfe1 | 183 | dev_dbg(&link->dev, "elsa_config(0x%p)\n", link); |
1da177e4 LT |
184 | dev = link->priv; |
185 | ||
00990e7c DB |
186 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
187 | ||
5fcd4da0 | 188 | i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL); |
e773cfe1 DB |
189 | if (i != 0) |
190 | goto failed; | |
1da177e4 | 191 | |
eb14120f | 192 | if (!link->irq) |
e773cfe1 | 193 | goto failed; |
1da177e4 | 194 | |
1ac71e5a | 195 | i = pcmcia_enable_device(link); |
e773cfe1 DB |
196 | if (i != 0) |
197 | goto failed; | |
1da177e4 | 198 | |
1da177e4 | 199 | /* Finally, report what we've done */ |
ded6a1a3 | 200 | dev_info(&link->dev, "index 0x%02x: ", |
7feabb64 | 201 | link->config_index); |
1ac71e5a | 202 | printk(", irq %d", link->irq); |
9a017a91 DB |
203 | if (link->resource[0]) |
204 | printk(" & %pR", link->resource[0]); | |
205 | if (link->resource[1]) | |
206 | printk(" & %pR", link->resource[1]); | |
1da177e4 LT |
207 | printk("\n"); |
208 | ||
eb14120f | 209 | icard.para[0] = link->irq; |
9a017a91 | 210 | icard.para[1] = link->resource[0]->start; |
1da177e4 LT |
211 | icard.protocol = protocol; |
212 | icard.typ = ISDN_CTYPE_ELSA_PCMCIA; | |
213 | ||
214 | i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard); | |
215 | if (i < 0) { | |
9a017a91 DB |
216 | printk(KERN_ERR "elsa_cs: failed to initialize Elsa " |
217 | "PCMCIA %d with %pR\n", i, link->resource[0]); | |
1da177e4 LT |
218 | elsa_cs_release(link); |
219 | } else | |
220 | ((local_info_t*)link->priv)->cardnr = i; | |
221 | ||
15b99ac1 | 222 | return 0; |
e773cfe1 | 223 | failed: |
1da177e4 | 224 | elsa_cs_release(link); |
15b99ac1 | 225 | return -ENODEV; |
1da177e4 LT |
226 | } /* elsa_cs_config */ |
227 | ||
228 | /*====================================================================== | |
229 | ||
230 | After a card is removed, elsa_cs_release() will unregister the net | |
231 | device, and release the PCMCIA configuration. If the device is | |
232 | still open, this will be postponed until it is closed. | |
233 | ||
234 | ======================================================================*/ | |
235 | ||
fba395ee | 236 | static void elsa_cs_release(struct pcmcia_device *link) |
1da177e4 LT |
237 | { |
238 | local_info_t *local = link->priv; | |
239 | ||
e773cfe1 | 240 | dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link); |
1da177e4 LT |
241 | |
242 | if (local) { | |
243 | if (local->cardnr >= 0) { | |
244 | /* no unregister function with hisax */ | |
245 | HiSax_closecard(local->cardnr); | |
246 | } | |
247 | } | |
5f2a71fc | 248 | |
fba395ee | 249 | pcmcia_disable_device(link); |
1da177e4 LT |
250 | } /* elsa_cs_release */ |
251 | ||
fba395ee | 252 | static int elsa_suspend(struct pcmcia_device *link) |
98e4c28b | 253 | { |
98e4c28b DB |
254 | local_info_t *dev = link->priv; |
255 | ||
98e4c28b | 256 | dev->busy = 1; |
98e4c28b DB |
257 | |
258 | return 0; | |
259 | } | |
260 | ||
fba395ee | 261 | static int elsa_resume(struct pcmcia_device *link) |
98e4c28b | 262 | { |
98e4c28b DB |
263 | local_info_t *dev = link->priv; |
264 | ||
98e4c28b DB |
265 | dev->busy = 0; |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
02ae38cf DB |
270 | static struct pcmcia_device_id elsa_ids[] = { |
271 | PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257), | |
272 | PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257), | |
273 | PCMCIA_DEVICE_NULL | |
274 | }; | |
275 | MODULE_DEVICE_TABLE(pcmcia, elsa_ids); | |
276 | ||
1da177e4 LT |
277 | static struct pcmcia_driver elsa_cs_driver = { |
278 | .owner = THIS_MODULE, | |
279 | .drv = { | |
280 | .name = "elsa_cs", | |
281 | }, | |
15b99ac1 | 282 | .probe = elsa_cs_probe, |
f61bb62e | 283 | .remove = __devexit_p(elsa_cs_detach), |
02ae38cf | 284 | .id_table = elsa_ids, |
98e4c28b DB |
285 | .suspend = elsa_suspend, |
286 | .resume = elsa_resume, | |
1da177e4 LT |
287 | }; |
288 | ||
289 | static int __init init_elsa_cs(void) | |
290 | { | |
291 | return pcmcia_register_driver(&elsa_cs_driver); | |
292 | } | |
293 | ||
294 | static void __exit exit_elsa_cs(void) | |
295 | { | |
296 | pcmcia_unregister_driver(&elsa_cs_driver); | |
1da177e4 LT |
297 | } |
298 | ||
299 | module_init(init_elsa_cs); | |
300 | module_exit(exit_elsa_cs); |