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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 | ||
30 | MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards"); | |
31 | MODULE_AUTHOR("Carsten Paeth"); | |
32 | MODULE_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 | |
42 | static int pc_debug = PCMCIA_DEBUG; | |
43 | module_param(pc_debug, int, 0); | |
44 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args); | |
45 | static 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 | ||
55 | static int isdnprot = 2; | |
56 | ||
57 | module_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 | 70 | static int avma1cs_config(struct pcmcia_device *link); |
fba395ee | 71 | static 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 | 79 | static 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 | ||
103 | typedef 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 | 119 | static 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 | 164 | static 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 | 179 | static 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 | 187 | static 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 | 195 | static 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 | 203 | static 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 | ||
277 | found_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 | 347 | static 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 |
360 | static 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 | }; | |
365 | MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids); | |
366 | ||
1da177e4 LT |
367 | static 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 | ||
379 | static int __init init_avma1_cs(void) | |
380 | { | |
381 | return(pcmcia_register_driver(&avma1cs_driver)); | |
382 | } | |
383 | ||
384 | static void __exit exit_avma1_cs(void) | |
385 | { | |
386 | pcmcia_unregister_driver(&avma1cs_driver); | |
1da177e4 LT |
387 | } |
388 | ||
389 | module_init(init_avma1_cs); | |
390 | module_exit(exit_avma1_cs); |