blob: 0a65280be8d58f08af5b81d4ed134d160f99247d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*======================================================================
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <pcmcia/cistpl.h>
50#include <pcmcia/cisreg.h>
51#include <pcmcia/ds.h>
52#include "hisax_cfg.h"
53
54MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Elsa PCM cards");
55MODULE_AUTHOR("Klaus Lichtenwalder");
56MODULE_LICENSE("Dual MPL/GPL");
57
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59/*====================================================================*/
60
61/* Parameters that can be set with 'insmod' */
62
63static int protocol = 2; /* EURO-ISDN Default */
64module_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
Hennef61bb622010-03-25 12:05:32 +000077static int elsa_cs_config(struct pcmcia_device *link) __devinit ;
Dominik Brodowskifba395e2006-03-31 17:21:06 +020078static void elsa_cs_release(struct pcmcia_device *link);
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
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
Hennef61bb622010-03-25 12:05:32 +000086static void elsa_cs_detach(struct pcmcia_device *p_dev) __devexit;
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
Linus Torvalds1da177e2005-04-16 15:20:36 -070088typedef struct local_info_t {
Dominik Brodowskifd238232006-03-05 10:45:09 +010089 struct pcmcia_device *p_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 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
Hennef61bb622010-03-25 12:05:32 +0000106static int __devinit elsa_cs_probe(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 local_info_t *local;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200110 dev_dbg(&link->dev, "elsa_cs_attach()\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
112 /* Allocate space for private device-specific data */
Burman Yan41f96932006-12-08 02:39:35 -0800113 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100114 if (!local) return -ENOMEM;
Dominik Brodowskifd238232006-03-05 10:45:09 +0100115
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200116 local->p_dev = link;
Dominik Brodowskifd238232006-03-05 10:45:09 +0100117 link->priv = local;
118
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 local->cardnr = -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 /*
122 General socket configuration defaults can go here. In this
123 client, we assume very little, and rely on the CIS for almost
124 everything. In most clients, many details (i.e., number, sizes,
125 and attributes of IO windows) are fixed by the nature of the
126 device, and can be hard-wired here.
127 */
Dominik Brodowski90abdc32010-07-24 17:23:51 +0200128 link->resource[0]->end = 8;
129 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200131 return elsa_cs_config(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132} /* elsa_cs_attach */
133
134/*======================================================================
135
136 This deletes a driver "instance". The device is de-registered
137 with Card Services. If it has been released, all local data
138 structures are freed. Otherwise, the structures will be freed
139 when the device is released.
140
141======================================================================*/
142
Hennef61bb622010-03-25 12:05:32 +0000143static void __devexit elsa_cs_detach(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144{
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100145 local_info_t *info = link->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200147 dev_dbg(&link->dev, "elsa_cs_detach(0x%p)\n", link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100149 info->busy = 1;
150 elsa_cs_release(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100152 kfree(info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153} /* elsa_cs_detach */
154
155/*======================================================================
156
157 elsa_cs_config() is scheduled to run after a CARD_INSERTION event
158 is received, to configure the PCMCIA socket, and to make the
159 device available to the system.
160
161======================================================================*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200163static int elsa_cs_configcheck(struct pcmcia_device *p_dev,
164 cistpl_cftable_entry_t *cf,
Dominik Brodowski8e2fc392008-08-02 15:30:31 +0200165 cistpl_cftable_entry_t *dflt,
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200166 void *priv_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167{
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200168 int j;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Dominik Brodowski90abdc32010-07-24 17:23:51 +0200170 p_dev->io_lines = 3;
171
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200172 if ((cf->io.nwin > 0) && cf->io.win[0].base) {
173 printk(KERN_INFO "(elsa_cs: looks like the 96 model)\n");
Dominik Brodowski90abdc32010-07-24 17:23:51 +0200174 p_dev->resource[0]->start = cf->io.win[0].base;
175 if (!pcmcia_request_io(p_dev))
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200176 return 0;
177 } else {
178 printk(KERN_INFO "(elsa_cs: looks like the 97 model)\n");
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200179 for (j = 0x2f0; j > 0x100; j -= 0x10) {
Dominik Brodowski90abdc32010-07-24 17:23:51 +0200180 p_dev->resource[0]->start = j;
181 if (!pcmcia_request_io(p_dev))
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200182 return 0;
183 }
184 }
185 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186}
187
Hennef61bb622010-03-25 12:05:32 +0000188static int __devinit elsa_cs_config(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 local_info_t *dev;
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200191 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 IsdnCard_t icard;
193
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200194 dev_dbg(&link->dev, "elsa_config(0x%p)\n", link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 dev = link->priv;
196
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200197 i = pcmcia_loop_config(link, elsa_cs_configcheck, NULL);
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200198 if (i != 0)
199 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Dominik Brodowskieb141202010-03-07 12:21:16 +0100201 if (!link->irq)
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200202 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
Dominik Brodowski1ac71e52010-07-29 19:27:09 +0200204 i = pcmcia_enable_device(link);
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200205 if (i != 0)
206 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 /* Finally, report what we've done */
Dominik Brodowskided6a1a2010-03-20 19:35:12 +0100209 dev_info(&link->dev, "index 0x%02x: ",
Dominik Brodowski7feabb62010-07-29 18:35:47 +0200210 link->config_index);
Dominik Brodowski1ac71e52010-07-29 19:27:09 +0200211 printk(", irq %d", link->irq);
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200212 if (link->resource[0])
213 printk(" & %pR", link->resource[0]);
214 if (link->resource[1])
215 printk(" & %pR", link->resource[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 printk("\n");
217
Dominik Brodowskieb141202010-03-07 12:21:16 +0100218 icard.para[0] = link->irq;
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200219 icard.para[1] = link->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 icard.protocol = protocol;
221 icard.typ = ISDN_CTYPE_ELSA_PCMCIA;
222
223 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
224 if (i < 0) {
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200225 printk(KERN_ERR "elsa_cs: failed to initialize Elsa "
226 "PCMCIA %d with %pR\n", i, link->resource[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 elsa_cs_release(link);
228 } else
229 ((local_info_t*)link->priv)->cardnr = i;
230
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200231 return 0;
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200232failed:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 elsa_cs_release(link);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200234 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235} /* elsa_cs_config */
236
237/*======================================================================
238
239 After a card is removed, elsa_cs_release() will unregister the net
240 device, and release the PCMCIA configuration. If the device is
241 still open, this will be postponed until it is closed.
242
243======================================================================*/
244
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200245static void elsa_cs_release(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246{
247 local_info_t *local = link->priv;
248
Dominik Brodowskie773cfe2009-10-24 15:50:13 +0200249 dev_dbg(&link->dev, "elsa_cs_release(0x%p)\n", link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
251 if (local) {
252 if (local->cardnr >= 0) {
253 /* no unregister function with hisax */
254 HiSax_closecard(local->cardnr);
255 }
256 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200258 pcmcia_disable_device(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259} /* elsa_cs_release */
260
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200261static int elsa_suspend(struct pcmcia_device *link)
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100262{
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100263 local_info_t *dev = link->priv;
264
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100265 dev->busy = 1;
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100266
267 return 0;
268}
269
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200270static int elsa_resume(struct pcmcia_device *link)
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100271{
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100272 local_info_t *dev = link->priv;
273
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100274 dev->busy = 0;
275
276 return 0;
277}
278
Dominik Brodowski02ae38c2005-06-27 16:28:39 -0700279static struct pcmcia_device_id elsa_ids[] = {
280 PCMCIA_DEVICE_PROD_ID12("ELSA AG (Aachen, Germany)", "MicroLink ISDN/MC ", 0x983de2c4, 0x333ba257),
281 PCMCIA_DEVICE_PROD_ID12("ELSA GmbH, Aachen", "MicroLink ISDN/MC ", 0x639e5718, 0x333ba257),
282 PCMCIA_DEVICE_NULL
283};
284MODULE_DEVICE_TABLE(pcmcia, elsa_ids);
285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286static struct pcmcia_driver elsa_cs_driver = {
287 .owner = THIS_MODULE,
288 .drv = {
289 .name = "elsa_cs",
290 },
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200291 .probe = elsa_cs_probe,
Hennef61bb622010-03-25 12:05:32 +0000292 .remove = __devexit_p(elsa_cs_detach),
Dominik Brodowski02ae38c2005-06-27 16:28:39 -0700293 .id_table = elsa_ids,
Dominik Brodowski98e4c28b72005-11-14 21:21:18 +0100294 .suspend = elsa_suspend,
295 .resume = elsa_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296};
297
298static int __init init_elsa_cs(void)
299{
300 return pcmcia_register_driver(&elsa_cs_driver);
301}
302
303static void __exit exit_elsa_cs(void)
304{
305 pcmcia_unregister_driver(&elsa_cs_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306}
307
308module_init(init_elsa_cs);
309module_exit(exit_elsa_cs);