[PATCH] pcmcia: embed dev_link_t into struct pcmcia_device
[deliverable/linux.git] / drivers / isdn / hardware / avm / avm_cs.c
CommitLineData
1da177e4
LT
1/* $Id: avm_cs.c,v 1.4.6.3 2001/09/23 22:24:33 kai Exp $
2 *
3 * A PCMCIA client driver for AVM B1/M1/M2
4 *
5 * Copyright 1999 by Carsten Paeth <calle@calle.de>
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/sched.h>
16#include <linux/ptrace.h>
17#include <linux/slab.h>
18#include <linux/string.h>
19#include <linux/tty.h>
20#include <linux/serial.h>
21#include <linux/major.h>
22#include <asm/io.h>
23#include <asm/system.h>
24
1da177e4
LT
25#include <pcmcia/cs_types.h>
26#include <pcmcia/cs.h>
27#include <pcmcia/cistpl.h>
28#include <pcmcia/ciscode.h>
29#include <pcmcia/ds.h>
30#include <pcmcia/cisreg.h>
31
32#include <linux/skbuff.h>
33#include <linux/capi.h>
34#include <linux/b1lli.h>
35#include <linux/b1pcmcia.h>
36
37/*====================================================================*/
38
39MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2");
40MODULE_AUTHOR("Carsten Paeth");
41MODULE_LICENSE("GPL");
42
43/*====================================================================*/
44
45/*
46 The event() function is this driver's Card Services event handler.
47 It will be called by Card Services when an appropriate card status
48 event is received. The config() and release() entry points are
49 used to configure or release a socket, in response to card insertion
50 and ejection events. They are invoked from the skeleton event
51 handler.
52*/
53
54static void avmcs_config(dev_link_t *link);
55static void avmcs_release(dev_link_t *link);
1da177e4
LT
56
57/*
58 The attach() and detach() entry points are used to create and destroy
59 "instances" of the driver, where each instance represents everything
60 needed to manage one actual PCMCIA card.
61*/
62
cc3b4866 63static void avmcs_detach(struct pcmcia_device *p_dev);
1da177e4 64
1da177e4
LT
65/*
66 A linked list of "instances" of the skeleton device. Each actual
67 PCMCIA card corresponds to one device instance, and is described
68 by one dev_link_t structure (defined in ds.h).
69
70 You may not want to use a linked list for this -- for example, the
71 memory card driver uses an array of dev_link_t pointers, where minor
72 device numbers are used to derive the corresponding array index.
73*/
74
1da177e4 75/*
1da177e4
LT
76 A driver needs to provide a dev_node_t structure for each device
77 on a card. In some cases, there is only one device per card (for
78 example, ethernet cards, modems). In other cases, there may be
79 many actual or logical devices (SCSI adapters, memory cards with
80 multiple partitions). The dev_node_t structures need to be kept
81 in a linked list starting at the 'dev' field of a dev_link_t
82 structure. We allocate them in the card's private data structure,
83 because they generally can't be allocated dynamically.
84*/
85
86typedef struct local_info_t {
87 dev_node_t node;
88} local_info_t;
89
90/*======================================================================
91
92 avmcs_attach() creates an "instance" of the driver, allocating
93 local data structures for one device. The device is registered
94 with Card Services.
95
96 The dev_link structure is initialized, but we don't actually
97 configure the card at this point -- we wait until we receive a
98 card insertion event.
99
100======================================================================*/
101
f8cfa618 102static int avmcs_attach(struct pcmcia_device *p_dev)
1da177e4 103{
1da177e4 104 local_info_t *local;
f8cfa618 105
1da177e4 106 /* The io structure describes IO port mapping */
fd238232
DB
107 p_dev->io.NumPorts1 = 16;
108 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
109 p_dev->io.NumPorts2 = 0;
1da177e4
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110
111 /* Interrupt setup */
fd238232
DB
112 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
113 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
114
115 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
1da177e4 116
1da177e4 117 /* General socket configuration */
fd238232
DB
118 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
119 p_dev->conf.IntType = INT_MEMORY_AND_IO;
120 p_dev->conf.ConfigIndex = 1;
121 p_dev->conf.Present = PRESENT_OPTION;
1da177e4
LT
122
123 /* Allocate space for private device-specific data */
124 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
125 if (!local)
fd238232 126 goto err;
1da177e4 127 memset(local, 0, sizeof(local_info_t));
fd238232 128 p_dev->priv = local;
f8cfa618 129
fd238232
DB
130 p_dev->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
131 avmcs_config(p_dev);
f8cfa618
DB
132
133 return 0;
1da177e4 134
1da177e4 135 err:
f8cfa618 136 return -EINVAL;
1da177e4
LT
137} /* avmcs_attach */
138
139/*======================================================================
140
141 This deletes a driver "instance". The device is de-registered
142 with Card Services. If it has been released, all local data
143 structures are freed. Otherwise, the structures will be freed
144 when the device is released.
145
146======================================================================*/
147
cc3b4866 148static void avmcs_detach(struct pcmcia_device *p_dev)
1da177e4 149{
cc3b4866 150 dev_link_t *link = dev_to_instance(p_dev);
1da177e4 151
cc3b4866
DB
152 if (link->state & DEV_CONFIG)
153 avmcs_release(link);
1da177e4 154
3c7208f2 155 kfree(link->priv);
1da177e4
LT
156} /* avmcs_detach */
157
158/*======================================================================
159
160 avmcs_config() is scheduled to run after a CARD_INSERTION event
161 is received, to configure the PCMCIA socket, and to make the
162 ethernet device available to the system.
163
164======================================================================*/
165
166static int get_tuple(client_handle_t handle, tuple_t *tuple,
167 cisparse_t *parse)
168{
169 int i = pcmcia_get_tuple_data(handle, tuple);
170 if (i != CS_SUCCESS) return i;
171 return pcmcia_parse_tuple(handle, tuple, parse);
172}
173
174static int first_tuple(client_handle_t handle, tuple_t *tuple,
175 cisparse_t *parse)
176{
177 int i = pcmcia_get_first_tuple(handle, tuple);
178 if (i != CS_SUCCESS) return i;
179 return get_tuple(handle, tuple, parse);
180}
181
182static int next_tuple(client_handle_t handle, tuple_t *tuple,
183 cisparse_t *parse)
184{
185 int i = pcmcia_get_next_tuple(handle, tuple);
186 if (i != CS_SUCCESS) return i;
187 return get_tuple(handle, tuple, parse);
188}
189
190static void avmcs_config(dev_link_t *link)
191{
192 client_handle_t handle;
193 tuple_t tuple;
194 cisparse_t parse;
195 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
196 local_info_t *dev;
197 int i;
198 u_char buf[64];
199 char devname[128];
200 int cardtype;
201 int (*addcard)(unsigned int port, unsigned irq);
202
203 handle = link->handle;
204 dev = link->priv;
205
206 /*
207 This reads the card's CONFIG tuple to find its configuration
208 registers.
209 */
210 do {
211 tuple.DesiredTuple = CISTPL_CONFIG;
212 i = pcmcia_get_first_tuple(handle, &tuple);
213 if (i != CS_SUCCESS) break;
214 tuple.TupleData = buf;
215 tuple.TupleDataMax = 64;
216 tuple.TupleOffset = 0;
217 i = pcmcia_get_tuple_data(handle, &tuple);
218 if (i != CS_SUCCESS) break;
219 i = pcmcia_parse_tuple(handle, &tuple, &parse);
220 if (i != CS_SUCCESS) break;
221 link->conf.ConfigBase = parse.config.base;
222 } while (0);
223 if (i != CS_SUCCESS) {
224 cs_error(link->handle, ParseTuple, i);
225 link->state &= ~DEV_CONFIG_PENDING;
226 return;
227 }
228
229 /* Configure card */
230 link->state |= DEV_CONFIG;
231
232 do {
233
234 tuple.Attributes = 0;
235 tuple.TupleData = buf;
236 tuple.TupleDataMax = 254;
237 tuple.TupleOffset = 0;
238 tuple.DesiredTuple = CISTPL_VERS_1;
239
240 devname[0] = 0;
241 if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) {
242 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
243 sizeof(devname));
244 }
245 /*
246 * find IO port
247 */
248 tuple.TupleData = (cisdata_t *)buf;
249 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
250 tuple.Attributes = 0;
251 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
252 i = first_tuple(handle, &tuple, &parse);
253 while (i == CS_SUCCESS) {
254 if (cf->io.nwin > 0) {
255 link->conf.ConfigIndex = cf->index;
256 link->io.BasePort1 = cf->io.win[0].base;
257 link->io.NumPorts1 = cf->io.win[0].len;
258 link->io.NumPorts2 = 0;
259 printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n",
260 link->io.BasePort1,
261 link->io.BasePort1+link->io.NumPorts1-1);
262 i = pcmcia_request_io(link->handle, &link->io);
263 if (i == CS_SUCCESS) goto found_port;
264 }
265 i = next_tuple(handle, &tuple, &parse);
266 }
267
268found_port:
269 if (i != CS_SUCCESS) {
270 cs_error(link->handle, RequestIO, i);
271 break;
272 }
50db3fdb 273
1da177e4
LT
274 /*
275 * allocate an interrupt line
276 */
277 i = pcmcia_request_irq(link->handle, &link->irq);
278 if (i != CS_SUCCESS) {
279 cs_error(link->handle, RequestIRQ, i);
50db3fdb
DB
280 /* undo */
281 pcmcia_disable_device(link->handle);
1da177e4
LT
282 break;
283 }
50db3fdb 284
1da177e4
LT
285 /*
286 * configure the PCMCIA socket
287 */
288 i = pcmcia_request_configuration(link->handle, &link->conf);
289 if (i != CS_SUCCESS) {
290 cs_error(link->handle, RequestConfiguration, i);
50db3fdb 291 pcmcia_disable_device(link->handle);
1da177e4
LT
292 break;
293 }
294
295 } while (0);
296
297 /* At this point, the dev_node_t structure(s) should be
298 initialized and arranged in a linked list at link->dev. */
299
300 if (devname[0]) {
301 char *s = strrchr(devname, ' ');
302 if (!s)
303 s = devname;
304 else s++;
305 strcpy(dev->node.dev_name, s);
306 if (strcmp("M1", s) == 0) {
307 cardtype = AVM_CARDTYPE_M1;
308 } else if (strcmp("M2", s) == 0) {
309 cardtype = AVM_CARDTYPE_M2;
310 } else {
311 cardtype = AVM_CARDTYPE_B1;
312 }
313 } else {
314 strcpy(dev->node.dev_name, "b1");
315 cardtype = AVM_CARDTYPE_B1;
316 }
317
318 dev->node.major = 64;
319 dev->node.minor = 0;
fd238232 320 link->dev_node = &dev->node;
1da177e4
LT
321
322 link->state &= ~DEV_CONFIG_PENDING;
323 /* If any step failed, release any partially configured state */
324 if (i != 0) {
325 avmcs_release(link);
326 return;
327 }
328
329
330 switch (cardtype) {
331 case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break;
332 case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break;
333 default:
334 case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
335 }
336 if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
337 printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
338 dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
339 avmcs_release(link);
340 return;
341 }
342 dev->node.minor = i;
343
344} /* avmcs_config */
345
346/*======================================================================
347
348 After a card is removed, avmcs_release() will unregister the net
349 device, and release the PCMCIA configuration. If the device is
350 still open, this will be postponed until it is closed.
351
352======================================================================*/
353
354static void avmcs_release(dev_link_t *link)
355{
5f2a71fc
DB
356 b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
357 pcmcia_disable_device(link->handle);
1da177e4
LT
358} /* avmcs_release */
359
1da177e4 360
a13bcf0d
DB
361static struct pcmcia_device_id avmcs_ids[] = {
362 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335),
363 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430),
364 PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a),
365 PCMCIA_DEVICE_NULL
366};
367MODULE_DEVICE_TABLE(pcmcia, avmcs_ids);
368
1da177e4
LT
369static struct pcmcia_driver avmcs_driver = {
370 .owner = THIS_MODULE,
371 .drv = {
372 .name = "avm_cs",
373 },
f8cfa618 374 .probe = avmcs_attach,
cc3b4866 375 .remove = avmcs_detach,
a13bcf0d 376 .id_table = avmcs_ids,
1da177e4
LT
377};
378
379static int __init avmcs_init(void)
380{
381 return pcmcia_register_driver(&avmcs_driver);
382}
383
384static void __exit avmcs_exit(void)
385{
386 pcmcia_unregister_driver(&avmcs_driver);
1da177e4
LT
387}
388
389module_init(avmcs_init);
390module_exit(avmcs_exit);
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