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CommitLineData
1da177e4
LT
1/*
2 * PCMCIA client driver for AVM A1 / Fritz!PCMCIA
3 *
4 * Author Carsten Paeth
5 * Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.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
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/sched.h>
18#include <linux/ptrace.h>
19#include <linux/slab.h>
20#include <linux/string.h>
21#include <asm/io.h>
22#include <asm/system.h>
23
1da177e4
LT
24#include <pcmcia/cs_types.h>
25#include <pcmcia/cs.h>
26#include <pcmcia/cistpl.h>
27#include <pcmcia/ds.h>
28#include "hisax_cfg.h"
29
30MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards");
31MODULE_AUTHOR("Carsten Paeth");
32MODULE_LICENSE("GPL");
33
34/*
35 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
36 you do not define PCMCIA_DEBUG at all, all the debug code will be
37 left out. If you compile with PCMCIA_DEBUG=0, the debug code will
38 be present but disabled -- but it can then be enabled for specific
39 modules at load time with a 'pc_debug=#' option to insmod.
40*/
41#ifdef PCMCIA_DEBUG
42static int pc_debug = PCMCIA_DEBUG;
43module_param(pc_debug, int, 0);
44#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
45static char *version =
46"avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)";
47#else
48#define DEBUG(n, args...)
49#endif
50
51/*====================================================================*/
52
53/* Parameters that can be set with 'insmod' */
54
55static int isdnprot = 2;
56
57module_param(isdnprot, int, 0);
58
59/*====================================================================*/
60
61/*
62 The event() function is this driver's Card Services event handler.
63 It will be called by Card Services when an appropriate card status
64 event is received. The config() and release() entry points are
65 used to configure or release a socket, in response to card insertion
66 and ejection events. They are invoked from the skeleton event
67 handler.
68*/
69
15b99ac1 70static int avma1cs_config(struct pcmcia_device *link);
fba395ee 71static void avma1cs_release(struct pcmcia_device *link);
1da177e4
LT
72
73/*
74 The attach() and detach() entry points are used to create and destroy
75 "instances" of the driver, where each instance represents everything
76 needed to manage one actual PCMCIA card.
77*/
78
cc3b4866 79static void avma1cs_detach(struct pcmcia_device *p_dev);
1da177e4 80
1da177e4
LT
81
82/*
83 A linked list of "instances" of the skeleton device. Each actual
84 PCMCIA card corresponds to one device instance, and is described
fba395ee 85 by one struct pcmcia_device structure (defined in ds.h).
1da177e4
LT
86
87 You may not want to use a linked list for this -- for example, the
fba395ee 88 memory card driver uses an array of struct pcmcia_device pointers, where minor
1da177e4
LT
89 device numbers are used to derive the corresponding array index.
90*/
91
1da177e4 92/*
1da177e4
LT
93 A driver needs to provide a dev_node_t structure for each device
94 on a card. In some cases, there is only one device per card (for
95 example, ethernet cards, modems). In other cases, there may be
96 many actual or logical devices (SCSI adapters, memory cards with
97 multiple partitions). The dev_node_t structures need to be kept
fba395ee 98 in a linked list starting at the 'dev' field of a struct pcmcia_device
1da177e4
LT
99 structure. We allocate them in the card's private data structure,
100 because they generally can't be allocated dynamically.
101*/
102
103typedef struct local_info_t {
104 dev_node_t node;
105} local_info_t;
106
107/*======================================================================
108
109 avma1cs_attach() creates an "instance" of the driver, allocating
110 local data structures for one device. The device is registered
111 with Card Services.
112
113 The dev_link structure is initialized, but we don't actually
114 configure the card at this point -- we wait until we receive a
115 card insertion event.
116
117======================================================================*/
118
15b99ac1 119static int avma1cs_probe(struct pcmcia_device *p_dev)
1da177e4 120{
1da177e4 121 local_info_t *local;
f8cfa618 122
1da177e4
LT
123 DEBUG(0, "avma1cs_attach()\n");
124
1da177e4
LT
125 /* Allocate space for private device-specific data */
126 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
fd238232 127 if (!local)
f8cfa618 128 return -ENOMEM;
fd238232 129
1da177e4 130 memset(local, 0, sizeof(local_info_t));
fd238232 131 p_dev->priv = local;
1da177e4
LT
132
133 /* The io structure describes IO port mapping */
fd238232
DB
134 p_dev->io.NumPorts1 = 16;
135 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
136 p_dev->io.NumPorts2 = 16;
137 p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
138 p_dev->io.IOAddrLines = 5;
1da177e4
LT
139
140 /* Interrupt setup */
fd238232
DB
141 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
142 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
1da177e4 143
fd238232 144 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
1da177e4
LT
145
146 /* General socket configuration */
fd238232
DB
147 p_dev->conf.Attributes = CONF_ENABLE_IRQ;
148 p_dev->conf.IntType = INT_MEMORY_AND_IO;
149 p_dev->conf.ConfigIndex = 1;
150 p_dev->conf.Present = PRESENT_OPTION;
f8cfa618 151
15b99ac1 152 return avma1cs_config(p_dev);
1da177e4
LT
153} /* avma1cs_attach */
154
155/*======================================================================
156
157 This deletes a driver "instance". The device is de-registered
158 with Card Services. If it has been released, all local data
159 structures are freed. Otherwise, the structures will be freed
160 when the device is released.
161
162======================================================================*/
163
fba395ee 164static void avma1cs_detach(struct pcmcia_device *link)
1da177e4 165{
e2d40963
DB
166 DEBUG(0, "avma1cs_detach(0x%p)\n", link);
167 avma1cs_release(link);
168 kfree(link->priv);
1da177e4
LT
169} /* avma1cs_detach */
170
171/*======================================================================
172
173 avma1cs_config() is scheduled to run after a CARD_INSERTION event
174 is received, to configure the PCMCIA socket, and to make the
175 ethernet device available to the system.
176
177======================================================================*/
178
fba395ee 179static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple,
1da177e4
LT
180 cisparse_t *parse)
181{
182 int i = pcmcia_get_tuple_data(handle, tuple);
183 if (i != CS_SUCCESS) return i;
184 return pcmcia_parse_tuple(handle, tuple, parse);
185}
186
fba395ee 187static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple,
1da177e4
LT
188 cisparse_t *parse)
189{
190 int i = pcmcia_get_first_tuple(handle, tuple);
191 if (i != CS_SUCCESS) return i;
192 return get_tuple(handle, tuple, parse);
193}
194
fba395ee 195static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple,
1da177e4
LT
196 cisparse_t *parse)
197{
198 int i = pcmcia_get_next_tuple(handle, tuple);
199 if (i != CS_SUCCESS) return i;
200 return get_tuple(handle, tuple, parse);
201}
202
15b99ac1 203static int avma1cs_config(struct pcmcia_device *link)
1da177e4 204{
1da177e4
LT
205 tuple_t tuple;
206 cisparse_t parse;
207 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
208 local_info_t *dev;
209 int i;
210 u_char buf[64];
211 char devname[128];
212 IsdnCard_t icard;
213 int busy = 0;
fba395ee 214
1da177e4
LT
215 dev = link->priv;
216
217 DEBUG(0, "avma1cs_config(0x%p)\n", link);
218
219 /*
220 This reads the card's CONFIG tuple to find its configuration
221 registers.
222 */
223 do {
224 tuple.DesiredTuple = CISTPL_CONFIG;
fba395ee 225 i = pcmcia_get_first_tuple(link, &tuple);
1da177e4
LT
226 if (i != CS_SUCCESS) break;
227 tuple.TupleData = buf;
228 tuple.TupleDataMax = 64;
229 tuple.TupleOffset = 0;
fba395ee 230 i = pcmcia_get_tuple_data(link, &tuple);
1da177e4 231 if (i != CS_SUCCESS) break;
fba395ee 232 i = pcmcia_parse_tuple(link, &tuple, &parse);
1da177e4
LT
233 if (i != CS_SUCCESS) break;
234 link->conf.ConfigBase = parse.config.base;
235 } while (0);
236 if (i != CS_SUCCESS) {
fba395ee 237 cs_error(link, ParseTuple, i);
15b99ac1 238 return -ENODEV;
1da177e4 239 }
1da177e4
LT
240
241 do {
242
243 tuple.Attributes = 0;
244 tuple.TupleData = buf;
245 tuple.TupleDataMax = 254;
246 tuple.TupleOffset = 0;
247 tuple.DesiredTuple = CISTPL_VERS_1;
248
249 devname[0] = 0;
fba395ee 250 if( !first_tuple(link, &tuple, &parse) && parse.version_1.ns > 1 ) {
1da177e4
LT
251 strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1],
252 sizeof(devname));
253 }
254 /*
255 * find IO port
256 */
257 tuple.TupleData = (cisdata_t *)buf;
258 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
259 tuple.Attributes = 0;
260 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
fba395ee 261 i = first_tuple(link, &tuple, &parse);
1da177e4
LT
262 while (i == CS_SUCCESS) {
263 if (cf->io.nwin > 0) {
264 link->conf.ConfigIndex = cf->index;
265 link->io.BasePort1 = cf->io.win[0].base;
266 link->io.NumPorts1 = cf->io.win[0].len;
267 link->io.NumPorts2 = 0;
268 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n",
269 link->io.BasePort1,
270 link->io.BasePort1+link->io.NumPorts1 - 1);
fba395ee 271 i = pcmcia_request_io(link, &link->io);
1da177e4
LT
272 if (i == CS_SUCCESS) goto found_port;
273 }
fba395ee 274 i = next_tuple(link, &tuple, &parse);
1da177e4
LT
275 }
276
277found_port:
278 if (i != CS_SUCCESS) {
fba395ee 279 cs_error(link, RequestIO, i);
1da177e4
LT
280 break;
281 }
282
283 /*
284 * allocate an interrupt line
285 */
fba395ee 286 i = pcmcia_request_irq(link, &link->irq);
1da177e4 287 if (i != CS_SUCCESS) {
fba395ee 288 cs_error(link, RequestIRQ, i);
50db3fdb 289 /* undo */
fba395ee 290 pcmcia_disable_device(link);
1da177e4
LT
291 break;
292 }
50db3fdb 293
1da177e4
LT
294 /*
295 * configure the PCMCIA socket
296 */
fba395ee 297 i = pcmcia_request_configuration(link, &link->conf);
1da177e4 298 if (i != CS_SUCCESS) {
fba395ee
DB
299 cs_error(link, RequestConfiguration, i);
300 pcmcia_disable_device(link);
1da177e4
LT
301 break;
302 }
303
304 } while (0);
305
306 /* At this point, the dev_node_t structure(s) should be
307 initialized and arranged in a linked list at link->dev. */
308
309 strcpy(dev->node.dev_name, "A1");
310 dev->node.major = 45;
311 dev->node.minor = 0;
fd238232 312 link->dev_node = &dev->node;
e2d40963 313
1da177e4
LT
314 /* If any step failed, release any partially configured state */
315 if (i != 0) {
316 avma1cs_release(link);
15b99ac1 317 return -ENODEV;
1da177e4
LT
318 }
319
320 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n",
321 link->io.BasePort1, link->irq.AssignedIRQ);
322
323 icard.para[0] = link->irq.AssignedIRQ;
324 icard.para[1] = link->io.BasePort1;
325 icard.protocol = isdnprot;
326 icard.typ = ISDN_CTYPE_A1_PCMCIA;
327
328 i = hisax_init_pcmcia(link, &busy, &icard);
329 if (i < 0) {
330 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1);
331 avma1cs_release(link);
15b99ac1 332 return -ENODEV;
1da177e4
LT
333 }
334 dev->node.minor = i;
335
15b99ac1 336 return 0;
1da177e4
LT
337} /* avma1cs_config */
338
339/*======================================================================
340
341 After a card is removed, avma1cs_release() will unregister the net
342 device, and release the PCMCIA configuration. If the device is
343 still open, this will be postponed until it is closed.
344
345======================================================================*/
346
fba395ee 347static void avma1cs_release(struct pcmcia_device *link)
1da177e4 348{
5f2a71fc 349 local_info_t *local = link->priv;
1da177e4 350
5f2a71fc 351 DEBUG(0, "avma1cs_release(0x%p)\n", link);
1da177e4 352
5f2a71fc
DB
353 /* now unregister function with hisax */
354 HiSax_closecard(local->node.minor);
1da177e4 355
fba395ee 356 pcmcia_disable_device(link);
1da177e4
LT
357} /* avma1cs_release */
358
1da177e4 359
c594c12c
DB
360static struct pcmcia_device_id avma1cs_ids[] = {
361 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb),
362 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b),
363 PCMCIA_DEVICE_NULL
364};
365MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids);
366
1da177e4
LT
367static struct pcmcia_driver avma1cs_driver = {
368 .owner = THIS_MODULE,
369 .drv = {
370 .name = "avma1_cs",
371 },
15b99ac1 372 .probe = avma1cs_probe,
cc3b4866 373 .remove = avma1cs_detach,
c594c12c 374 .id_table = avma1cs_ids,
1da177e4 375};
8661bb5b 376
1da177e4
LT
377/*====================================================================*/
378
379static int __init init_avma1_cs(void)
380{
381 return(pcmcia_register_driver(&avma1cs_driver));
382}
383
384static void __exit exit_avma1_cs(void)
385{
386 pcmcia_unregister_driver(&avma1cs_driver);
1da177e4
LT
387}
388
389module_init(init_avma1_cs);
390module_exit(exit_avma1_cs);