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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* $Id: teles_cs.c,v 1.1.2.2 2004/01/25 15:07:06 keil Exp $ */
2/*======================================================================
3
4 A teles S0 PCMCIA client driver
5
6 Based on skeleton by David Hinds, dhinds@allegro.stanford.edu
7 Written by Christof Petig, christof.petig@wtal.de
8
9 Also inspired by ELSA PCMCIA driver
10 by Klaus Lichtenwalder <Lichtenwalder@ACM.org>
11
12 Extentions to new hisax_pcmcia by Karsten Keil
13
14 minor changes to be compatible with kernel 2.4.x
15 by Jan.Schubert@GMX.li
16
17======================================================================*/
18
19#include <linux/kernel.h>
20#include <linux/module.h>
21#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/ptrace.h>
23#include <linux/slab.h>
24#include <linux/string.h>
25#include <linux/timer.h>
26#include <linux/ioport.h>
27#include <asm/io.h>
28#include <asm/system.h>
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <pcmcia/cs_types.h>
31#include <pcmcia/cs.h>
32#include <pcmcia/cistpl.h>
33#include <pcmcia/cisreg.h>
34#include <pcmcia/ds.h>
35#include "hisax_cfg.h"
36
37MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Teles PCMCIA cards");
38MODULE_AUTHOR("Christof Petig, christof.petig@wtal.de, Karsten Keil, kkeil@suse.de");
39MODULE_LICENSE("GPL");
40
41/*
42 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
43 you do not define PCMCIA_DEBUG at all, all the debug code will be
44 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
45 be present but disabled -- but it can then be enabled for specific
46 modules at load time with a 'pc_debug=#' option to insmod.
47*/
48
49#ifdef PCMCIA_DEBUG
50static int pc_debug = PCMCIA_DEBUG;
51module_param(pc_debug, int, 0);
52#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
53static char *version =
54"teles_cs.c 2.10 2002/07/30 22:23:34 kkeil";
55#else
56#define DEBUG(n, args...)
57#endif
58
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 teles_cs event
74 handler.
75*/
76
Dominik Brodowski15b99ac2006-03-31 17:26:06 +020077static int teles_cs_config(struct pcmcia_device *link);
Dominik Brodowskifba395e2006-03-31 17:21:06 +020078static void teles_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
Dominik Brodowskicc3b4862005-11-14 21:23:14 +010086static void teles_detach(struct pcmcia_device *p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
88/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 A linked list of "instances" of the teles_cs device. Each actual
90 PCMCIA card corresponds to one device instance, and is described
Dominik Brodowskifba395e2006-03-31 17:21:06 +020091 by one struct pcmcia_device structure (defined in ds.h).
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
93 You may not want to use a linked list for this -- for example, the
Dominik Brodowskifba395e2006-03-31 17:21:06 +020094 memory card driver uses an array of struct pcmcia_device pointers, where minor
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 device numbers are used to derive the corresponding array index.
96*/
97
Linus Torvalds1da177e2005-04-16 15:20:36 -070098/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 A driver needs to provide a dev_node_t structure for each device
100 on a card. In some cases, there is only one device per card (for
101 example, ethernet cards, modems). In other cases, there may be
102 many actual or logical devices (SCSI adapters, memory cards with
103 multiple partitions). The dev_node_t structures need to be kept
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200104 in a linked list starting at the 'dev' field of a struct pcmcia_device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 structure. We allocate them in the card's private data structure,
106 because they generally shouldn't be allocated dynamically.
107 In this case, we also provide a flag to indicate if a device is
108 "stopped" due to a power management event, or card ejection. The
109 device IO routines can use a flag like this to throttle IO to a
110 card that is not ready to accept it.
111*/
112
113typedef struct local_info_t {
Dominik Brodowskifd238232006-03-05 10:45:09 +0100114 struct pcmcia_device *p_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 dev_node_t node;
116 int busy;
117 int cardnr;
118} local_info_t;
119
120/*======================================================================
121
122 teles_attach() creates an "instance" of the driver, allocatingx
123 local data structures for one device. The device is registered
124 with Card Services.
125
126 The dev_link structure is initialized, but we don't actually
127 configure the card at this point -- we wait until we receive a
128 card insertion event.
129
130======================================================================*/
131
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200132static int teles_probe(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 local_info_t *local;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
136 DEBUG(0, "teles_attach()\n");
137
138 /* Allocate space for private device-specific data */
Burman Yan41f96932006-12-08 02:39:35 -0800139 local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100140 if (!local) return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 local->cardnr = -1;
Dominik Brodowskifd238232006-03-05 10:45:09 +0100142
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200143 local->p_dev = link;
Dominik Brodowskifd238232006-03-05 10:45:09 +0100144 link->priv = local;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146 /* Interrupt setup */
147 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
148 link->irq.IRQInfo1 = IRQ_LEVEL_ID|IRQ_SHARE_ID;
149 link->irq.Handler = NULL;
150
151 /*
152 General socket configuration defaults can go here. In this
153 client, we assume very little, and rely on the CIS for almost
154 everything. In most clients, many details (i.e., number, sizes,
155 and attributes of IO windows) are fixed by the nature of the
156 device, and can be hard-wired here.
157 */
158 link->io.NumPorts1 = 96;
159 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
160 link->io.IOAddrLines = 5;
161
162 link->conf.Attributes = CONF_ENABLE_IRQ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 link->conf.IntType = INT_MEMORY_AND_IO;
164
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200165 return teles_cs_config(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166} /* teles_attach */
167
168/*======================================================================
169
170 This deletes a driver "instance". The device is de-registered
171 with Card Services. If it has been released, all local data
172 structures are freed. Otherwise, the structures will be freed
173 when the device is released.
174
175======================================================================*/
176
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200177static void teles_detach(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178{
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100179 local_info_t *info = link->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100181 DEBUG(0, "teles_detach(0x%p)\n", link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100183 info->busy = 1;
184 teles_cs_release(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100186 kfree(info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187} /* teles_detach */
188
189/*======================================================================
190
191 teles_cs_config() is scheduled to run after a CARD_INSERTION event
192 is received, to configure the PCMCIA socket, and to make the
193 device available to the system.
194
195======================================================================*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200197static int teles_cs_configcheck(struct pcmcia_device *p_dev,
198 cistpl_cftable_entry_t *cf,
Dominik Brodowski8e2fc392008-08-02 15:30:31 +0200199 cistpl_cftable_entry_t *dflt,
Dominik Brodowskiad913c12008-08-02 16:12:00 +0200200 unsigned int vcc,
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200201 void *priv_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202{
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200203 int j;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200205 if ((cf->io.nwin > 0) && cf->io.win[0].base) {
206 printk(KERN_INFO "(teles_cs: looks like the 96 model)\n");
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200207 p_dev->io.BasePort1 = cf->io.win[0].base;
208 if (!pcmcia_request_io(p_dev, &p_dev->io))
209 return 0;
210 } else {
211 printk(KERN_INFO "(teles_cs: looks like the 97 model)\n");
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200212 for (j = 0x2f0; j > 0x100; j -= 0x10) {
213 p_dev->io.BasePort1 = j;
214 if (!pcmcia_request_io(p_dev, &p_dev->io))
215 return 0;
216 }
217 }
218 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219}
220
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200221static int teles_cs_config(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 local_info_t *dev;
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200224 int i, last_fn;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 IsdnCard_t icard;
226
227 DEBUG(0, "teles_config(0x%p)\n", link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 dev = link->priv;
229
Dominik Brodowski5fcd4da2008-07-29 08:38:55 +0200230 i = pcmcia_loop_config(link, teles_cs_configcheck, NULL);
Dominik Brodowski4c89e882008-08-03 10:07:45 +0200231 if (i != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 last_fn = RequestIO;
233 goto cs_failed;
234 }
235
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200236 i = pcmcia_request_irq(link, &link->irq);
Dominik Brodowski4c89e882008-08-03 10:07:45 +0200237 if (i != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 link->irq.AssignedIRQ = 0;
239 last_fn = RequestIRQ;
240 goto cs_failed;
241 }
242
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200243 i = pcmcia_request_configuration(link, &link->conf);
Dominik Brodowski4c89e882008-08-03 10:07:45 +0200244 if (i != 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 last_fn = RequestConfiguration;
246 goto cs_failed;
247 }
248
249 /* At this point, the dev_node_t structure(s) should be
250 initialized and arranged in a linked list at link->dev. *//* */
251 sprintf(dev->node.dev_name, "teles");
252 dev->node.major = dev->node.minor = 0x0;
253
Dominik Brodowskifd238232006-03-05 10:45:09 +0100254 link->dev_node = &dev->node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
256 /* Finally, report what we've done */
Dominik Brodowski70294b42006-01-15 12:43:16 +0100257 printk(KERN_INFO "%s: index 0x%02x:",
258 dev->node.dev_name, link->conf.ConfigIndex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 if (link->conf.Attributes & CONF_ENABLE_IRQ)
260 printk(", irq %d", link->irq.AssignedIRQ);
261 if (link->io.NumPorts1)
262 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
263 link->io.BasePort1+link->io.NumPorts1-1);
264 if (link->io.NumPorts2)
265 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
266 link->io.BasePort2+link->io.NumPorts2-1);
267 printk("\n");
268
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 icard.para[0] = link->irq.AssignedIRQ;
270 icard.para[1] = link->io.BasePort1;
271 icard.protocol = protocol;
272 icard.typ = ISDN_CTYPE_TELESPCMCIA;
273
274 i = hisax_init_pcmcia(link, &(((local_info_t*)link->priv)->busy), &icard);
275 if (i < 0) {
276 printk(KERN_ERR "teles_cs: failed to initialize Teles PCMCIA %d at i/o %#x\n",
277 i, link->io.BasePort1);
278 teles_cs_release(link);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200279 return -ENODEV;
280 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200282 ((local_info_t*)link->priv)->cardnr = i;
283 return 0;
284
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285cs_failed:
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200286 cs_error(link, last_fn, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 teles_cs_release(link);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200288 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289} /* teles_cs_config */
290
291/*======================================================================
292
293 After a card is removed, teles_cs_release() will unregister the net
294 device, and release the PCMCIA configuration. If the device is
295 still open, this will be postponed until it is closed.
296
297======================================================================*/
298
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200299static void teles_cs_release(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300{
301 local_info_t *local = link->priv;
302
303 DEBUG(0, "teles_cs_release(0x%p)\n", link);
304
305 if (local) {
306 if (local->cardnr >= 0) {
307 /* no unregister function with hisax */
308 HiSax_closecard(local->cardnr);
309 }
310 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200312 pcmcia_disable_device(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313} /* teles_cs_release */
314
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200315static int teles_suspend(struct pcmcia_device *link)
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100316{
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100317 local_info_t *dev = link->priv;
318
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100319 dev->busy = 1;
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100320
321 return 0;
322}
323
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200324static int teles_resume(struct pcmcia_device *link)
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100325{
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100326 local_info_t *dev = link->priv;
327
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100328 dev->busy = 0;
329
330 return 0;
331}
332
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333
Dominik Brodowski0a10d732005-06-27 16:28:24 -0700334static struct pcmcia_device_id teles_ids[] = {
335 PCMCIA_DEVICE_PROD_ID12("TELES", "S0/PC", 0x67b50eae, 0xe9e70119),
336 PCMCIA_DEVICE_NULL,
337};
338MODULE_DEVICE_TABLE(pcmcia, teles_ids);
339
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340static struct pcmcia_driver teles_cs_driver = {
341 .owner = THIS_MODULE,
342 .drv = {
343 .name = "teles_cs",
344 },
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200345 .probe = teles_probe,
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100346 .remove = teles_detach,
Dominik Brodowski0a10d732005-06-27 16:28:24 -0700347 .id_table = teles_ids,
Dominik Brodowski98e4c282005-11-14 21:21:18 +0100348 .suspend = teles_suspend,
349 .resume = teles_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350};
351
352static int __init init_teles_cs(void)
353{
354 return pcmcia_register_driver(&teles_cs_driver);
355}
356
357static void __exit exit_teles_cs(void)
358{
359 pcmcia_unregister_driver(&teles_cs_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360}
361
362module_init(init_teles_cs);
363module_exit(exit_teles_cs);