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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 | ||
39 | MODULE_DESCRIPTION("CAPI4Linux: PCMCIA client driver for AVM B1/M1/M2"); | |
40 | MODULE_AUTHOR("Carsten Paeth"); | |
41 | MODULE_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 | ||
54 | static void avmcs_config(dev_link_t *link); | |
55 | static 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 | 63 | static 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 | ||
86 | typedef 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 | 102 | static int avmcs_attach(struct pcmcia_device *p_dev) |
1da177e4 | 103 | { |
1da177e4 LT |
104 | dev_link_t *link; |
105 | local_info_t *local; | |
f8cfa618 | 106 | |
1da177e4 LT |
107 | /* Initialize the dev_link_t structure */ |
108 | link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL); | |
109 | if (!link) | |
110 | goto err; | |
111 | memset(link, 0, sizeof(struct dev_link_t)); | |
112 | ||
113 | /* The io structure describes IO port mapping */ | |
114 | link->io.NumPorts1 = 16; | |
115 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
116 | link->io.NumPorts2 = 0; | |
117 | ||
118 | /* Interrupt setup */ | |
119 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
120 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; | |
121 | ||
122 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
123 | ||
124 | /* General socket configuration */ | |
125 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
126 | link->conf.Vcc = 50; | |
127 | link->conf.IntType = INT_MEMORY_AND_IO; | |
128 | link->conf.ConfigIndex = 1; | |
129 | link->conf.Present = PRESENT_OPTION; | |
130 | ||
131 | /* Allocate space for private device-specific data */ | |
132 | local = kmalloc(sizeof(local_info_t), GFP_KERNEL); | |
133 | if (!local) | |
134 | goto err_kfree; | |
135 | memset(local, 0, sizeof(local_info_t)); | |
136 | link->priv = local; | |
f8cfa618 DB |
137 | |
138 | link->handle = p_dev; | |
139 | p_dev->instance = link; | |
140 | ||
141 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
142 | avmcs_config(link); | |
143 | ||
144 | return 0; | |
1da177e4 LT |
145 | |
146 | err_kfree: | |
147 | kfree(link); | |
148 | err: | |
f8cfa618 | 149 | return -EINVAL; |
1da177e4 LT |
150 | } /* avmcs_attach */ |
151 | ||
152 | /*====================================================================== | |
153 | ||
154 | This deletes a driver "instance". The device is de-registered | |
155 | with Card Services. If it has been released, all local data | |
156 | structures are freed. Otherwise, the structures will be freed | |
157 | when the device is released. | |
158 | ||
159 | ======================================================================*/ | |
160 | ||
cc3b4866 | 161 | static void avmcs_detach(struct pcmcia_device *p_dev) |
1da177e4 | 162 | { |
cc3b4866 | 163 | dev_link_t *link = dev_to_instance(p_dev); |
1da177e4 | 164 | |
cc3b4866 DB |
165 | if (link->state & DEV_CONFIG) |
166 | avmcs_release(link); | |
1da177e4 | 167 | |
3c7208f2 | 168 | kfree(link->priv); |
1da177e4 | 169 | kfree(link); |
1da177e4 LT |
170 | } /* avmcs_detach */ |
171 | ||
172 | /*====================================================================== | |
173 | ||
174 | avmcs_config() is scheduled to run after a CARD_INSERTION event | |
175 | is received, to configure the PCMCIA socket, and to make the | |
176 | ethernet device available to the system. | |
177 | ||
178 | ======================================================================*/ | |
179 | ||
180 | static int get_tuple(client_handle_t handle, tuple_t *tuple, | |
181 | cisparse_t *parse) | |
182 | { | |
183 | int i = pcmcia_get_tuple_data(handle, tuple); | |
184 | if (i != CS_SUCCESS) return i; | |
185 | return pcmcia_parse_tuple(handle, tuple, parse); | |
186 | } | |
187 | ||
188 | static int first_tuple(client_handle_t handle, tuple_t *tuple, | |
189 | cisparse_t *parse) | |
190 | { | |
191 | int i = pcmcia_get_first_tuple(handle, tuple); | |
192 | if (i != CS_SUCCESS) return i; | |
193 | return get_tuple(handle, tuple, parse); | |
194 | } | |
195 | ||
196 | static int next_tuple(client_handle_t handle, tuple_t *tuple, | |
197 | cisparse_t *parse) | |
198 | { | |
199 | int i = pcmcia_get_next_tuple(handle, tuple); | |
200 | if (i != CS_SUCCESS) return i; | |
201 | return get_tuple(handle, tuple, parse); | |
202 | } | |
203 | ||
204 | static void avmcs_config(dev_link_t *link) | |
205 | { | |
206 | client_handle_t handle; | |
207 | tuple_t tuple; | |
208 | cisparse_t parse; | |
209 | cistpl_cftable_entry_t *cf = &parse.cftable_entry; | |
210 | local_info_t *dev; | |
211 | int i; | |
212 | u_char buf[64]; | |
213 | char devname[128]; | |
214 | int cardtype; | |
215 | int (*addcard)(unsigned int port, unsigned irq); | |
216 | ||
217 | handle = link->handle; | |
218 | dev = link->priv; | |
219 | ||
220 | /* | |
221 | This reads the card's CONFIG tuple to find its configuration | |
222 | registers. | |
223 | */ | |
224 | do { | |
225 | tuple.DesiredTuple = CISTPL_CONFIG; | |
226 | i = pcmcia_get_first_tuple(handle, &tuple); | |
227 | if (i != CS_SUCCESS) break; | |
228 | tuple.TupleData = buf; | |
229 | tuple.TupleDataMax = 64; | |
230 | tuple.TupleOffset = 0; | |
231 | i = pcmcia_get_tuple_data(handle, &tuple); | |
232 | if (i != CS_SUCCESS) break; | |
233 | i = pcmcia_parse_tuple(handle, &tuple, &parse); | |
234 | if (i != CS_SUCCESS) break; | |
235 | link->conf.ConfigBase = parse.config.base; | |
236 | } while (0); | |
237 | if (i != CS_SUCCESS) { | |
238 | cs_error(link->handle, ParseTuple, i); | |
239 | link->state &= ~DEV_CONFIG_PENDING; | |
240 | return; | |
241 | } | |
242 | ||
243 | /* Configure card */ | |
244 | link->state |= DEV_CONFIG; | |
245 | ||
246 | do { | |
247 | ||
248 | tuple.Attributes = 0; | |
249 | tuple.TupleData = buf; | |
250 | tuple.TupleDataMax = 254; | |
251 | tuple.TupleOffset = 0; | |
252 | tuple.DesiredTuple = CISTPL_VERS_1; | |
253 | ||
254 | devname[0] = 0; | |
255 | if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) { | |
256 | strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1], | |
257 | sizeof(devname)); | |
258 | } | |
259 | /* | |
260 | * find IO port | |
261 | */ | |
262 | tuple.TupleData = (cisdata_t *)buf; | |
263 | tuple.TupleOffset = 0; tuple.TupleDataMax = 255; | |
264 | tuple.Attributes = 0; | |
265 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
266 | i = first_tuple(handle, &tuple, &parse); | |
267 | while (i == CS_SUCCESS) { | |
268 | if (cf->io.nwin > 0) { | |
269 | link->conf.ConfigIndex = cf->index; | |
270 | link->io.BasePort1 = cf->io.win[0].base; | |
271 | link->io.NumPorts1 = cf->io.win[0].len; | |
272 | link->io.NumPorts2 = 0; | |
273 | printk(KERN_INFO "avm_cs: testing i/o %#x-%#x\n", | |
274 | link->io.BasePort1, | |
275 | link->io.BasePort1+link->io.NumPorts1-1); | |
276 | i = pcmcia_request_io(link->handle, &link->io); | |
277 | if (i == CS_SUCCESS) goto found_port; | |
278 | } | |
279 | i = next_tuple(handle, &tuple, &parse); | |
280 | } | |
281 | ||
282 | found_port: | |
283 | if (i != CS_SUCCESS) { | |
284 | cs_error(link->handle, RequestIO, i); | |
285 | break; | |
286 | } | |
287 | ||
288 | /* | |
289 | * allocate an interrupt line | |
290 | */ | |
291 | i = pcmcia_request_irq(link->handle, &link->irq); | |
292 | if (i != CS_SUCCESS) { | |
293 | cs_error(link->handle, RequestIRQ, i); | |
294 | pcmcia_release_io(link->handle, &link->io); | |
295 | break; | |
296 | } | |
297 | ||
298 | /* | |
299 | * configure the PCMCIA socket | |
300 | */ | |
301 | i = pcmcia_request_configuration(link->handle, &link->conf); | |
302 | if (i != CS_SUCCESS) { | |
303 | cs_error(link->handle, RequestConfiguration, i); | |
304 | pcmcia_release_io(link->handle, &link->io); | |
305 | pcmcia_release_irq(link->handle, &link->irq); | |
306 | break; | |
307 | } | |
308 | ||
309 | } while (0); | |
310 | ||
311 | /* At this point, the dev_node_t structure(s) should be | |
312 | initialized and arranged in a linked list at link->dev. */ | |
313 | ||
314 | if (devname[0]) { | |
315 | char *s = strrchr(devname, ' '); | |
316 | if (!s) | |
317 | s = devname; | |
318 | else s++; | |
319 | strcpy(dev->node.dev_name, s); | |
320 | if (strcmp("M1", s) == 0) { | |
321 | cardtype = AVM_CARDTYPE_M1; | |
322 | } else if (strcmp("M2", s) == 0) { | |
323 | cardtype = AVM_CARDTYPE_M2; | |
324 | } else { | |
325 | cardtype = AVM_CARDTYPE_B1; | |
326 | } | |
327 | } else { | |
328 | strcpy(dev->node.dev_name, "b1"); | |
329 | cardtype = AVM_CARDTYPE_B1; | |
330 | } | |
331 | ||
332 | dev->node.major = 64; | |
333 | dev->node.minor = 0; | |
334 | link->dev = &dev->node; | |
335 | ||
336 | link->state &= ~DEV_CONFIG_PENDING; | |
337 | /* If any step failed, release any partially configured state */ | |
338 | if (i != 0) { | |
339 | avmcs_release(link); | |
340 | return; | |
341 | } | |
342 | ||
343 | ||
344 | switch (cardtype) { | |
345 | case AVM_CARDTYPE_M1: addcard = b1pcmcia_addcard_m1; break; | |
346 | case AVM_CARDTYPE_M2: addcard = b1pcmcia_addcard_m2; break; | |
347 | default: | |
348 | case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break; | |
349 | } | |
350 | if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) { | |
351 | printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n", | |
352 | dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ); | |
353 | avmcs_release(link); | |
354 | return; | |
355 | } | |
356 | dev->node.minor = i; | |
357 | ||
358 | } /* avmcs_config */ | |
359 | ||
360 | /*====================================================================== | |
361 | ||
362 | After a card is removed, avmcs_release() will unregister the net | |
363 | device, and release the PCMCIA configuration. If the device is | |
364 | still open, this will be postponed until it is closed. | |
365 | ||
366 | ======================================================================*/ | |
367 | ||
368 | static void avmcs_release(dev_link_t *link) | |
369 | { | |
370 | b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ); | |
371 | ||
372 | /* Unlink the device chain */ | |
373 | link->dev = NULL; | |
374 | ||
375 | /* Don't bother checking to see if these succeed or not */ | |
376 | pcmcia_release_configuration(link->handle); | |
377 | pcmcia_release_io(link->handle, &link->io); | |
378 | pcmcia_release_irq(link->handle, &link->irq); | |
379 | link->state &= ~DEV_CONFIG; | |
1da177e4 LT |
380 | } /* avmcs_release */ |
381 | ||
98e4c28b DB |
382 | static int avmcs_suspend(struct pcmcia_device *dev) |
383 | { | |
384 | dev_link_t *link = dev_to_instance(dev); | |
385 | ||
386 | link->state |= DEV_SUSPEND; | |
387 | if (link->state & DEV_CONFIG) | |
388 | pcmcia_release_configuration(link->handle); | |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
393 | static int avmcs_resume(struct pcmcia_device *dev) | |
394 | { | |
395 | dev_link_t *link = dev_to_instance(dev); | |
396 | ||
397 | link->state &= ~DEV_SUSPEND; | |
398 | if (link->state & DEV_CONFIG) | |
399 | pcmcia_request_configuration(link->handle, &link->conf); | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
1da177e4 LT |
404 | /*====================================================================== |
405 | ||
406 | The card status event handler. Mostly, this schedules other | |
407 | stuff to run after an event is received. A CARD_REMOVAL event | |
408 | also sets some flags to discourage the net drivers from trying | |
409 | to talk to the card any more. | |
410 | ||
411 | When a CARD_REMOVAL event is received, we immediately set a flag | |
412 | to block future accesses to this device. All the functions that | |
413 | actually access the device should check this flag to make sure | |
414 | the card is still present. | |
415 | ||
416 | ======================================================================*/ | |
417 | ||
1da177e4 | 418 | |
a13bcf0d DB |
419 | static struct pcmcia_device_id avmcs_ids[] = { |
420 | PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN-Controller B1", 0x95d42008, 0x845dc335), | |
421 | PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M1", 0x95d42008, 0x81e10430), | |
422 | PCMCIA_DEVICE_PROD_ID12("AVM", "Mobile ISDN-Controller M2", 0x95d42008, 0x18e8558a), | |
423 | PCMCIA_DEVICE_NULL | |
424 | }; | |
425 | MODULE_DEVICE_TABLE(pcmcia, avmcs_ids); | |
426 | ||
1da177e4 LT |
427 | static struct pcmcia_driver avmcs_driver = { |
428 | .owner = THIS_MODULE, | |
429 | .drv = { | |
430 | .name = "avm_cs", | |
431 | }, | |
f8cfa618 | 432 | .probe = avmcs_attach, |
cc3b4866 | 433 | .remove = avmcs_detach, |
a13bcf0d | 434 | .id_table = avmcs_ids, |
98e4c28b DB |
435 | .suspend= avmcs_suspend, |
436 | .resume = avmcs_resume, | |
1da177e4 LT |
437 | }; |
438 | ||
439 | static int __init avmcs_init(void) | |
440 | { | |
441 | return pcmcia_register_driver(&avmcs_driver); | |
442 | } | |
443 | ||
444 | static void __exit avmcs_exit(void) | |
445 | { | |
446 | pcmcia_unregister_driver(&avmcs_driver); | |
1da177e4 LT |
447 | } |
448 | ||
449 | module_init(avmcs_init); | |
450 | module_exit(avmcs_exit); |