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Commit | Line | Data |
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1a8d4663 DB |
1 | /* |
2 | * PCMCIA 16-bit resource management functions | |
3 | * | |
4 | * The initial developer of the original code is David A. Hinds | |
5 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
6 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
7 | * | |
8 | * Copyright (C) 1999 David A. Hinds | |
9 | * Copyright (C) 2004-2005 Dominik Brodowski | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | */ | |
16 | ||
1a8d4663 DB |
17 | #include <linux/module.h> |
18 | #include <linux/kernel.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/device.h> | |
91284224 | 23 | #include <linux/netdevice.h> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
1a8d4663 | 25 | |
6f0f38c4 DB |
26 | #include <asm/irq.h> |
27 | ||
1a8d4663 DB |
28 | #include <pcmcia/cs_types.h> |
29 | #include <pcmcia/ss.h> | |
30 | #include <pcmcia/cs.h> | |
1a8d4663 DB |
31 | #include <pcmcia/cistpl.h> |
32 | #include <pcmcia/cisreg.h> | |
33 | #include <pcmcia/ds.h> | |
34 | ||
35 | #include "cs_internal.h" | |
1a8d4663 DB |
36 | |
37 | ||
1a8d4663 | 38 | /* Access speed for IO windows */ |
9fea84f4 | 39 | static int io_speed; |
1a8d4663 DB |
40 | module_param(io_speed, int, 0444); |
41 | ||
42 | ||
f9c316f4 DB |
43 | static int pcmcia_adjust_io_region(struct resource *res, unsigned long start, |
44 | unsigned long end, struct pcmcia_socket *s) | |
45 | { | |
46 | if (s->resource_ops->adjust_io_region) | |
47 | return s->resource_ops->adjust_io_region(res, start, end, s); | |
48 | return -ENOMEM; | |
49 | } | |
50 | ||
51 | static struct resource *pcmcia_find_io_region(unsigned long base, int num, | |
52 | unsigned long align, | |
53 | struct pcmcia_socket *s) | |
54 | { | |
55 | if (s->resource_ops->find_io) | |
56 | return s->resource_ops->find_io(base, num, align, s); | |
57 | return NULL; | |
58 | } | |
59 | ||
a3ac9af5 DB |
60 | int pcmcia_validate_mem(struct pcmcia_socket *s) |
61 | { | |
62 | if (s->resource_ops->validate_mem) | |
63 | return s->resource_ops->validate_mem(s); | |
64 | /* if there is no callback, we can assume that everything is OK */ | |
65 | return 0; | |
66 | } | |
67 | ||
68 | struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, | |
69 | int low, struct pcmcia_socket *s) | |
70 | { | |
71 | if (s->resource_ops->find_mem) | |
72 | return s->resource_ops->find_mem(base, num, align, low, s); | |
73 | return NULL; | |
74 | } | |
75 | ||
1a8d4663 | 76 | |
1a8d4663 DB |
77 | /** alloc_io_space |
78 | * | |
79 | * Special stuff for managing IO windows, because they are scarce | |
80 | */ | |
81 | ||
ecb8a847 OJ |
82 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, |
83 | unsigned int *base, unsigned int num, u_int lines) | |
1a8d4663 DB |
84 | { |
85 | int i; | |
ecb8a847 | 86 | unsigned int try, align; |
1a8d4663 DB |
87 | |
88 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
89 | if (align && (align < num)) { | |
90 | if (*base) { | |
d50dbec3 | 91 | dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n", |
1a8d4663 DB |
92 | num, align); |
93 | align = 0; | |
94 | } else | |
9fea84f4 DB |
95 | while (align && (align < num)) |
96 | align <<= 1; | |
1a8d4663 DB |
97 | } |
98 | if (*base & ~(align-1)) { | |
d50dbec3 | 99 | dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n", |
1a8d4663 DB |
100 | *base, align); |
101 | align = 0; | |
102 | } | |
103 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
104 | *base = s->io_offset | (*base & 0x0fff); | |
105 | return 0; | |
106 | } | |
107 | /* Check for an already-allocated window that must conflict with | |
108 | * what was asked for. It is a hack because it does not catch all | |
109 | * potential conflicts, just the most obvious ones. | |
110 | */ | |
111 | for (i = 0; i < MAX_IO_WIN; i++) | |
4708b5fa | 112 | if ((s->io[i].res) && *base && |
c7d00693 | 113 | ((s->io[i].res->start & (align-1)) == *base)) |
1a8d4663 DB |
114 | return 1; |
115 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 116 | if (!s->io[i].res) { |
1a8d4663 DB |
117 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); |
118 | if (s->io[i].res) { | |
c7d00693 DB |
119 | *base = s->io[i].res->start; |
120 | s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); | |
121 | s->io[i].InUse = num; | |
1a8d4663 DB |
122 | break; |
123 | } else | |
124 | return 1; | |
c7d00693 | 125 | } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) |
1a8d4663 DB |
126 | continue; |
127 | /* Try to extend top of window */ | |
c7d00693 | 128 | try = s->io[i].res->end + 1; |
1a8d4663 DB |
129 | if ((*base == 0) || (*base == try)) |
130 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
131 | s->io[i].res->end + num, s) == 0) { | |
132 | *base = try; | |
1a8d4663 DB |
133 | s->io[i].InUse += num; |
134 | break; | |
135 | } | |
136 | /* Try to extend bottom of window */ | |
c7d00693 | 137 | try = s->io[i].res->start - num; |
1a8d4663 DB |
138 | if ((*base == 0) || (*base == try)) |
139 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
140 | s->io[i].res->end, s) == 0) { | |
c7d00693 | 141 | *base = try; |
1a8d4663 DB |
142 | s->io[i].InUse += num; |
143 | break; | |
144 | } | |
145 | } | |
146 | return (i == MAX_IO_WIN); | |
147 | } /* alloc_io_space */ | |
148 | ||
149 | ||
ecb8a847 OJ |
150 | static void release_io_space(struct pcmcia_socket *s, unsigned int base, |
151 | unsigned int num) | |
1a8d4663 DB |
152 | { |
153 | int i; | |
154 | ||
155 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 DB |
156 | if (!s->io[i].res) |
157 | continue; | |
158 | if ((s->io[i].res->start <= base) && | |
159 | (s->io[i].res->end >= base+num-1)) { | |
1a8d4663 DB |
160 | s->io[i].InUse -= num; |
161 | /* Free the window if no one else is using it */ | |
162 | if (s->io[i].InUse == 0) { | |
1a8d4663 DB |
163 | release_resource(s->io[i].res); |
164 | kfree(s->io[i].res); | |
165 | s->io[i].res = NULL; | |
166 | } | |
167 | } | |
168 | } | |
169 | } /* release_io_space */ | |
170 | ||
171 | ||
172 | /** pccard_access_configuration_register | |
173 | * | |
174 | * Access_configuration_register() reads and writes configuration | |
175 | * registers in attribute memory. Memory window 0 is reserved for | |
176 | * this and the tuple reading services. | |
177 | */ | |
178 | ||
855cdf13 | 179 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
1a8d4663 DB |
180 | conf_reg_t *reg) |
181 | { | |
855cdf13 | 182 | struct pcmcia_socket *s; |
1a8d4663 DB |
183 | config_t *c; |
184 | int addr; | |
185 | u_char val; | |
186 | ||
855cdf13 | 187 | if (!p_dev || !p_dev->function_config) |
3939c1ef | 188 | return -EINVAL; |
1a8d4663 | 189 | |
855cdf13 | 190 | s = p_dev->socket; |
94a819f8 DB |
191 | |
192 | mutex_lock(&s->ops_mutex); | |
855cdf13 | 193 | c = p_dev->function_config; |
1a8d4663 | 194 | |
6d9a299f DB |
195 | if (!(c->state & CONFIG_LOCKED)) { |
196 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
94a819f8 | 197 | mutex_unlock(&s->ops_mutex); |
943f70f1 | 198 | return -EACCES; |
6d9a299f | 199 | } |
1a8d4663 DB |
200 | |
201 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
94a819f8 | 202 | mutex_unlock(&s->ops_mutex); |
1a8d4663 DB |
203 | |
204 | switch (reg->Action) { | |
205 | case CS_READ: | |
206 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
207 | reg->Value = val; | |
208 | break; | |
209 | case CS_WRITE: | |
210 | val = reg->Value; | |
211 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
212 | break; | |
213 | default: | |
6d9a299f | 214 | dev_dbg(&s->dev, "Invalid conf register request\n"); |
926c5402 | 215 | return -EINVAL; |
1a8d4663 DB |
216 | break; |
217 | } | |
4c89e88b | 218 | return 0; |
855cdf13 | 219 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
220 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
221 | ||
1a8d4663 | 222 | |
868575d1 MD |
223 | int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, |
224 | memreq_t *req) | |
1a8d4663 | 225 | { |
0bdf9b3d | 226 | struct pcmcia_socket *s = p_dev->socket; |
6b8e087b | 227 | int ret; |
868575d1 | 228 | |
0bdf9b3d MD |
229 | wh--; |
230 | if (wh >= MAX_WIN) | |
ffb8da20 | 231 | return -EINVAL; |
610e2374 | 232 | if (req->Page != 0) { |
d50dbec3 | 233 | dev_dbg(&s->dev, "failure: requested page is zero\n"); |
610e2374 DB |
234 | return -EINVAL; |
235 | } | |
6b8e087b | 236 | mutex_lock(&s->ops_mutex); |
82f88e36 | 237 | s->win[wh].card_start = req->CardOffset; |
6b8e087b DB |
238 | ret = s->ops->set_mem_map(s, &s->win[wh]); |
239 | if (ret) | |
240 | dev_warn(&s->dev, "failed to set_mem_map\n"); | |
241 | mutex_unlock(&s->ops_mutex); | |
242 | return ret; | |
1a8d4663 DB |
243 | } /* pcmcia_map_mem_page */ |
244 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
245 | ||
246 | ||
247 | /** pcmcia_modify_configuration | |
248 | * | |
249 | * Modify a locked socket configuration | |
250 | */ | |
2bc5a9bd | 251 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
252 | modconf_t *mod) |
253 | { | |
254 | struct pcmcia_socket *s; | |
255 | config_t *c; | |
4e06e240 | 256 | int ret; |
1a8d4663 | 257 | |
2bc5a9bd | 258 | s = p_dev->socket; |
94a819f8 DB |
259 | |
260 | mutex_lock(&s->ops_mutex); | |
dbb22f0d DB |
261 | c = p_dev->function_config; |
262 | ||
6d9a299f DB |
263 | if (!(s->state & SOCKET_PRESENT)) { |
264 | dev_dbg(&s->dev, "No card present\n"); | |
4e06e240 JS |
265 | ret = -ENODEV; |
266 | goto unlock; | |
6d9a299f DB |
267 | } |
268 | if (!(c->state & CONFIG_LOCKED)) { | |
269 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
4e06e240 JS |
270 | ret = -EACCES; |
271 | goto unlock; | |
6d9a299f | 272 | } |
1a8d4663 | 273 | |
0cb3c49c DB |
274 | if (mod->Attributes & (CONF_IRQ_CHANGE_VALID | CONF_VCC_CHANGE_VALID)) { |
275 | dev_dbg(&s->dev, | |
276 | "changing Vcc or IRQ is not allowed at this time\n"); | |
4e06e240 JS |
277 | ret = -EINVAL; |
278 | goto unlock; | |
d8b0a49d | 279 | } |
1a8d4663 DB |
280 | |
281 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
282 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
283 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
60df3de8 | 284 | if (mod->Vpp1 != mod->Vpp2) { |
d50dbec3 | 285 | dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n"); |
4e06e240 JS |
286 | ret = -EINVAL; |
287 | goto unlock; | |
60df3de8 | 288 | } |
71ed90d8 | 289 | s->socket.Vpp = mod->Vpp1; |
d8b0a49d DB |
290 | if (s->ops->set_socket(s, &s->socket)) { |
291 | dev_printk(KERN_WARNING, &s->dev, | |
292 | "Unable to set VPP\n"); | |
4e06e240 JS |
293 | ret = -EIO; |
294 | goto unlock; | |
d8b0a49d | 295 | } |
1a8d4663 | 296 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || |
d8b0a49d | 297 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { |
d50dbec3 | 298 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
4e06e240 JS |
299 | ret = -EINVAL; |
300 | goto unlock; | |
d8b0a49d | 301 | } |
1a8d4663 | 302 | |
4bbed523 DB |
303 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
304 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
305 | pccard_io_map io_on; | |
306 | int i; | |
307 | ||
308 | io_on.speed = io_speed; | |
309 | for (i = 0; i < MAX_IO_WIN; i++) { | |
310 | if (!s->io[i].res) | |
311 | continue; | |
312 | io_off.map = i; | |
313 | io_on.map = i; | |
314 | ||
315 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
316 | io_on.start = s->io[i].res->start; | |
317 | io_on.stop = s->io[i].res->end; | |
318 | ||
319 | s->ops->set_io_map(s, &io_off); | |
320 | mdelay(40); | |
321 | s->ops->set_io_map(s, &io_on); | |
322 | } | |
323 | } | |
4e06e240 JS |
324 | ret = 0; |
325 | unlock: | |
94a819f8 | 326 | mutex_unlock(&s->ops_mutex); |
4bbed523 | 327 | |
4e06e240 | 328 | return ret; |
1a8d4663 DB |
329 | } /* modify_configuration */ |
330 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
331 | ||
332 | ||
2bc5a9bd | 333 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
334 | { |
335 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 336 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 | 337 | config_t *c; |
1a8d4663 DB |
338 | int i; |
339 | ||
9e86749c | 340 | mutex_lock(&s->ops_mutex); |
94a819f8 | 341 | c = p_dev->function_config; |
e2d40963 DB |
342 | if (p_dev->_locked) { |
343 | p_dev->_locked = 0; | |
1a8d4663 DB |
344 | if (--(s->lock_count) == 0) { |
345 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
346 | s->socket.Vpp = 0; | |
347 | s->socket.io_irq = 0; | |
348 | s->ops->set_socket(s, &s->socket); | |
349 | } | |
5f2a71fc DB |
350 | } |
351 | if (c->state & CONFIG_LOCKED) { | |
352 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
353 | if (c->state & CONFIG_IO_REQ) |
354 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 355 | if (!s->io[i].res) |
1a8d4663 DB |
356 | continue; |
357 | s->io[i].Config--; | |
358 | if (s->io[i].Config != 0) | |
359 | continue; | |
360 | io.map = i; | |
361 | s->ops->set_io_map(s, &io); | |
362 | } | |
1a8d4663 | 363 | } |
9e86749c | 364 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 365 | |
4c89e88b | 366 | return 0; |
1a8d4663 | 367 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
368 | |
369 | ||
370 | /** pcmcia_release_io | |
371 | * | |
372 | * Release_io() releases the I/O ranges allocated by a client. This | |
373 | * may be invoked some time after a card ejection has already dumped | |
374 | * the actual socket configuration, so if the client is "stale", we | |
375 | * don't bother checking the port ranges against the current socket | |
376 | * values. | |
377 | */ | |
b4c88400 | 378 | static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 379 | { |
2bc5a9bd | 380 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 DB |
381 | int ret = -EINVAL; |
382 | config_t *c; | |
383 | ||
384 | mutex_lock(&s->ops_mutex); | |
385 | c = p_dev->function_config; | |
1a8d4663 | 386 | |
9fea84f4 | 387 | if (!p_dev->_io) |
94a819f8 | 388 | goto out; |
5f2a71fc | 389 | |
e2d40963 | 390 | p_dev->_io = 0; |
1a8d4663 | 391 | |
5f2a71fc DB |
392 | if ((c->io.BasePort1 != req->BasePort1) || |
393 | (c->io.NumPorts1 != req->NumPorts1) || | |
394 | (c->io.BasePort2 != req->BasePort2) || | |
395 | (c->io.NumPorts2 != req->NumPorts2)) | |
94a819f8 | 396 | goto out; |
5f2a71fc DB |
397 | |
398 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 DB |
399 | |
400 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
401 | if (req->NumPorts2) | |
402 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
403 | ||
94a819f8 DB |
404 | out: |
405 | mutex_unlock(&s->ops_mutex); | |
406 | ||
407 | return ret; | |
1a8d4663 | 408 | } /* pcmcia_release_io */ |
1a8d4663 DB |
409 | |
410 | ||
b4c88400 | 411 | static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 412 | { |
2bc5a9bd | 413 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 DB |
414 | config_t *c; |
415 | int ret = -EINVAL; | |
416 | ||
417 | mutex_lock(&s->ops_mutex); | |
418 | ||
419 | c = p_dev->function_config; | |
5f2a71fc | 420 | |
e2d40963 | 421 | if (!p_dev->_irq) |
94a819f8 DB |
422 | goto out; |
423 | ||
e2d40963 | 424 | p_dev->_irq = 0; |
1a8d4663 | 425 | |
5f2a71fc | 426 | if (c->state & CONFIG_LOCKED) |
94a819f8 DB |
427 | goto out; |
428 | ||
6f840afb | 429 | if (s->pcmcia_irq != req->AssignedIRQ) { |
d50dbec3 | 430 | dev_dbg(&s->dev, "IRQ must match assigned one\n"); |
94a819f8 | 431 | goto out; |
69ba4433 | 432 | } |
1a8d4663 | 433 | |
9fea84f4 | 434 | if (req->Handler) |
5fa9167a | 435 | free_irq(req->AssignedIRQ, p_dev->priv); |
1a8d4663 | 436 | |
94a819f8 DB |
437 | ret = 0; |
438 | ||
439 | out: | |
64d8d46f | 440 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 441 | |
94a819f8 | 442 | return ret; |
1a8d4663 | 443 | } /* pcmcia_release_irq */ |
1a8d4663 DB |
444 | |
445 | ||
f5560da5 | 446 | int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh) |
1a8d4663 | 447 | { |
0bdf9b3d | 448 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 449 | pccard_mem_map *win; |
1a8d4663 | 450 | |
0bdf9b3d MD |
451 | wh--; |
452 | if (wh >= MAX_WIN) | |
ffb8da20 | 453 | return -EINVAL; |
0bdf9b3d | 454 | |
6b8e087b | 455 | mutex_lock(&s->ops_mutex); |
0bdf9b3d MD |
456 | win = &s->win[wh]; |
457 | ||
458 | if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) { | |
6d9a299f | 459 | dev_dbg(&s->dev, "not releasing unknown window\n"); |
6b8e087b | 460 | mutex_unlock(&s->ops_mutex); |
ffb8da20 | 461 | return -EINVAL; |
6d9a299f | 462 | } |
1a8d4663 DB |
463 | |
464 | /* Shut down memory window */ | |
82f88e36 DB |
465 | win->flags &= ~MAP_ACTIVE; |
466 | s->ops->set_mem_map(s, win); | |
0bdf9b3d | 467 | s->state &= ~SOCKET_WIN_REQ(wh); |
1a8d4663 DB |
468 | |
469 | /* Release system memory */ | |
82f88e36 DB |
470 | if (win->res) { |
471 | release_resource(win->res); | |
472 | kfree(win->res); | |
473 | win->res = NULL; | |
1a8d4663 | 474 | } |
0bdf9b3d | 475 | p_dev->_win &= ~CLIENT_WIN_REQ(wh); |
6b8e087b | 476 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 477 | |
4c89e88b | 478 | return 0; |
1a8d4663 DB |
479 | } /* pcmcia_release_window */ |
480 | EXPORT_SYMBOL(pcmcia_release_window); | |
481 | ||
482 | ||
2bc5a9bd | 483 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
484 | config_req_t *req) |
485 | { | |
486 | int i; | |
487 | u_int base; | |
2bc5a9bd | 488 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
489 | config_t *c; |
490 | pccard_io_map iomap; | |
491 | ||
1a8d4663 | 492 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 493 | return -ENODEV; |
1a8d4663 | 494 | |
de6405e9 | 495 | if (req->IntType & INT_CARDBUS) { |
d50dbec3 | 496 | dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n"); |
de6405e9 DB |
497 | return -EINVAL; |
498 | } | |
94a819f8 DB |
499 | |
500 | mutex_lock(&s->ops_mutex); | |
dbb22f0d | 501 | c = p_dev->function_config; |
6d9a299f | 502 | if (c->state & CONFIG_LOCKED) { |
94a819f8 | 503 | mutex_unlock(&s->ops_mutex); |
6d9a299f | 504 | dev_dbg(&s->dev, "Configuration is locked\n"); |
943f70f1 | 505 | return -EACCES; |
6d9a299f | 506 | } |
1a8d4663 DB |
507 | |
508 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 509 | s->socket.Vpp = req->Vpp; |
d8b0a49d | 510 | if (s->ops->set_socket(s, &s->socket)) { |
9e86749c | 511 | mutex_unlock(&s->ops_mutex); |
d8b0a49d DB |
512 | dev_printk(KERN_WARNING, &s->dev, |
513 | "Unable to set socket state\n"); | |
514 | return -EINVAL; | |
515 | } | |
1a8d4663 | 516 | |
1a8d4663 DB |
517 | /* Pick memory or I/O card, DMA mode, interrupt */ |
518 | c->IntType = req->IntType; | |
519 | c->Attributes = req->Attributes; | |
520 | if (req->IntType & INT_MEMORY_AND_IO) | |
521 | s->socket.flags |= SS_IOCARD; | |
522 | if (req->IntType & INT_ZOOMED_VIDEO) | |
523 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
524 | if (req->Attributes & CONF_ENABLE_DMA) | |
525 | s->socket.flags |= SS_DMA_MODE; | |
526 | if (req->Attributes & CONF_ENABLE_SPKR) | |
527 | s->socket.flags |= SS_SPKR_ENA; | |
528 | if (req->Attributes & CONF_ENABLE_IRQ) | |
6f840afb | 529 | s->socket.io_irq = s->pcmcia_irq; |
1a8d4663 DB |
530 | else |
531 | s->socket.io_irq = 0; | |
532 | s->ops->set_socket(s, &s->socket); | |
533 | s->lock_count++; | |
9e86749c | 534 | mutex_unlock(&s->ops_mutex); |
1a8d4663 DB |
535 | |
536 | /* Set up CIS configuration registers */ | |
537 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 538 | c->CardValues = req->Present; |
1a8d4663 DB |
539 | if (req->Present & PRESENT_COPY) { |
540 | c->Copy = req->Copy; | |
541 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
542 | } | |
543 | if (req->Present & PRESENT_OPTION) { | |
544 | if (s->functions == 1) { | |
545 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
546 | } else { | |
547 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
548 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
549 | if (req->Present & PRESENT_IOBASE_0) | |
550 | c->Option |= COR_ADDR_DECODE; | |
551 | } | |
a7debe78 DB |
552 | if ((req->Attributes & CONF_ENABLE_IRQ) && |
553 | !(req->Attributes & CONF_ENABLE_PULSE_IRQ)) | |
554 | c->Option |= COR_LEVEL_REQ; | |
1a8d4663 DB |
555 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); |
556 | mdelay(40); | |
557 | } | |
558 | if (req->Present & PRESENT_STATUS) { | |
559 | c->Status = req->Status; | |
560 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
561 | } | |
562 | if (req->Present & PRESENT_PIN_REPLACE) { | |
563 | c->Pin = req->Pin; | |
564 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
565 | } | |
566 | if (req->Present & PRESENT_EXT_STATUS) { | |
567 | c->ExtStatus = req->ExtStatus; | |
568 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
569 | } | |
570 | if (req->Present & PRESENT_IOBASE_0) { | |
571 | u_char b = c->io.BasePort1 & 0xff; | |
572 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
573 | b = (c->io.BasePort1 >> 8) & 0xff; | |
574 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
575 | } | |
576 | if (req->Present & PRESENT_IOSIZE) { | |
577 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
578 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
579 | } | |
580 | ||
581 | /* Configure I/O windows */ | |
582 | if (c->state & CONFIG_IO_REQ) { | |
8533ee31 | 583 | mutex_lock(&s->ops_mutex); |
1a8d4663 DB |
584 | iomap.speed = io_speed; |
585 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 586 | if (s->io[i].res) { |
1a8d4663 DB |
587 | iomap.map = i; |
588 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 589 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
590 | case IO_DATA_PATH_WIDTH_16: |
591 | iomap.flags |= MAP_16BIT; break; | |
592 | case IO_DATA_PATH_WIDTH_AUTO: | |
593 | iomap.flags |= MAP_AUTOSZ; break; | |
594 | default: | |
595 | break; | |
596 | } | |
c7d00693 DB |
597 | iomap.start = s->io[i].res->start; |
598 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
599 | s->ops->set_io_map(s, &iomap); |
600 | s->io[i].Config++; | |
601 | } | |
8533ee31 | 602 | mutex_unlock(&s->ops_mutex); |
1a8d4663 DB |
603 | } |
604 | ||
605 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 606 | p_dev->_locked = 1; |
4c89e88b | 607 | return 0; |
1a8d4663 DB |
608 | } /* pcmcia_request_configuration */ |
609 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
610 | ||
611 | ||
612 | /** pcmcia_request_io | |
613 | * | |
614 | * Request_io() reserves ranges of port addresses for a socket. | |
615 | * I have not implemented range sharing or alias addressing. | |
616 | */ | |
2bc5a9bd | 617 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 618 | { |
2bc5a9bd | 619 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 620 | config_t *c; |
94a819f8 DB |
621 | int ret = -EINVAL; |
622 | ||
623 | mutex_lock(&s->ops_mutex); | |
1a8d4663 | 624 | |
6d9a299f DB |
625 | if (!(s->state & SOCKET_PRESENT)) { |
626 | dev_dbg(&s->dev, "No card present\n"); | |
94a819f8 | 627 | goto out; |
6d9a299f | 628 | } |
1a8d4663 | 629 | |
1a8d4663 | 630 | if (!req) |
94a819f8 DB |
631 | goto out; |
632 | ||
dbb22f0d | 633 | c = p_dev->function_config; |
6d9a299f DB |
634 | if (c->state & CONFIG_LOCKED) { |
635 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
94a819f8 | 636 | goto out; |
6d9a299f | 637 | } |
f958095e | 638 | if (c->state & CONFIG_IO_REQ) { |
d50dbec3 | 639 | dev_dbg(&s->dev, "IO already configured\n"); |
94a819f8 | 640 | goto out; |
f958095e | 641 | } |
610e2374 | 642 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) { |
d50dbec3 | 643 | dev_dbg(&s->dev, "bad attribute setting for IO region 1\n"); |
94a819f8 | 644 | goto out; |
610e2374 | 645 | } |
1a8d4663 | 646 | if ((req->NumPorts2 > 0) && |
610e2374 | 647 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) { |
d50dbec3 | 648 | dev_dbg(&s->dev, "bad attribute setting for IO region 2\n"); |
94a819f8 | 649 | goto out; |
610e2374 | 650 | } |
1a8d4663 | 651 | |
d50dbec3 | 652 | dev_dbg(&s->dev, "trying to allocate resource 1\n"); |
94a819f8 DB |
653 | ret = alloc_io_space(s, req->Attributes1, &req->BasePort1, |
654 | req->NumPorts1, req->IOAddrLines); | |
655 | if (ret) { | |
d50dbec3 | 656 | dev_dbg(&s->dev, "allocation of resource 1 failed\n"); |
94a819f8 | 657 | goto out; |
f958095e | 658 | } |
1a8d4663 DB |
659 | |
660 | if (req->NumPorts2) { | |
d50dbec3 | 661 | dev_dbg(&s->dev, "trying to allocate resource 2\n"); |
94a819f8 DB |
662 | ret = alloc_io_space(s, req->Attributes2, &req->BasePort2, |
663 | req->NumPorts2, req->IOAddrLines); | |
664 | if (ret) { | |
d50dbec3 | 665 | dev_dbg(&s->dev, "allocation of resource 2 failed\n"); |
1a8d4663 | 666 | release_io_space(s, req->BasePort1, req->NumPorts1); |
94a819f8 | 667 | goto out; |
1a8d4663 DB |
668 | } |
669 | } | |
670 | ||
671 | c->io = *req; | |
672 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 673 | p_dev->_io = 1; |
94a819f8 DB |
674 | dev_dbg(&s->dev, "allocating resources succeeded: %d\n", ret); |
675 | ||
676 | out: | |
677 | mutex_unlock(&s->ops_mutex); | |
678 | ||
679 | return ret; | |
1a8d4663 DB |
680 | } /* pcmcia_request_io */ |
681 | EXPORT_SYMBOL(pcmcia_request_io); | |
682 | ||
683 | ||
684 | /** pcmcia_request_irq | |
685 | * | |
686 | * Request_irq() reserves an irq for this client. | |
1a8d4663 DB |
687 | */ |
688 | ||
2bc5a9bd | 689 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 690 | { |
2bc5a9bd | 691 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 692 | config_t *c; |
6f0f38c4 DB |
693 | int ret = -EINVAL, irq = p_dev->irq_v; |
694 | int type = IRQF_SHARED; | |
1a8d4663 | 695 | |
94a819f8 DB |
696 | mutex_lock(&s->ops_mutex); |
697 | ||
6d9a299f DB |
698 | if (!(s->state & SOCKET_PRESENT)) { |
699 | dev_dbg(&s->dev, "No card present\n"); | |
94a819f8 | 700 | goto out; |
6d9a299f | 701 | } |
dbb22f0d | 702 | c = p_dev->function_config; |
6d9a299f DB |
703 | if (c->state & CONFIG_LOCKED) { |
704 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
94a819f8 | 705 | goto out; |
6d9a299f | 706 | } |
1a8d4663 | 707 | |
d3e03f4e | 708 | if (!irq) { |
6f0f38c4 DB |
709 | dev_dbg(&s->dev, "no IRQ available\n"); |
710 | goto out; | |
1a8d4663 | 711 | } |
6f0f38c4 DB |
712 | |
713 | if (!(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { | |
714 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; | |
6f0f38c4 DB |
715 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " |
716 | "needs updating to supported shared IRQ lines.\n"); | |
1a8d4663 DB |
717 | } |
718 | ||
6f0f38c4 | 719 | if (req->Handler) { |
f958095e | 720 | ret = request_irq(irq, req->Handler, type, |
5fa9167a | 721 | p_dev->devname, p_dev->priv); |
6d9a299f DB |
722 | if (ret) { |
723 | dev_printk(KERN_INFO, &s->dev, | |
724 | "request_irq() failed\n"); | |
94a819f8 | 725 | goto out; |
6d9a299f | 726 | } |
1a8d4663 DB |
727 | } |
728 | ||
6f0f38c4 | 729 | req->AssignedIRQ = irq; |
1a8d4663 | 730 | |
e2d40963 | 731 | p_dev->_irq = 1; |
1a8d4663 | 732 | |
94a819f8 DB |
733 | ret = 0; |
734 | out: | |
9e86749c | 735 | mutex_unlock(&s->ops_mutex); |
94a819f8 | 736 | return ret; |
1a8d4663 DB |
737 | } /* pcmcia_request_irq */ |
738 | EXPORT_SYMBOL(pcmcia_request_irq); | |
739 | ||
740 | ||
6f0f38c4 DB |
741 | #ifdef CONFIG_PCMCIA_PROBE |
742 | ||
743 | /* mask of IRQs already reserved by other cards, we should avoid using them */ | |
744 | static u8 pcmcia_used_irq[NR_IRQS]; | |
745 | ||
746 | static irqreturn_t test_action(int cpl, void *dev_id) | |
747 | { | |
748 | return IRQ_NONE; | |
749 | } | |
750 | ||
751 | /** | |
752 | * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used | |
753 | * @p_dev - the associated PCMCIA device | |
754 | * | |
755 | * locking note: must be called with ops_mutex locked. | |
756 | */ | |
757 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
758 | { | |
759 | struct pcmcia_socket *s = p_dev->socket; | |
760 | unsigned int try, irq; | |
761 | u32 mask = s->irq_mask; | |
762 | int ret = -ENODEV; | |
763 | ||
764 | for (try = 0; try < 64; try++) { | |
765 | irq = try % 32; | |
766 | ||
767 | /* marked as available by driver, not blocked by userspace? */ | |
768 | if (!((mask >> irq) & 1)) | |
769 | continue; | |
770 | ||
771 | /* avoid an IRQ which is already used by another PCMCIA card */ | |
772 | if ((try < 32) && pcmcia_used_irq[irq]) | |
773 | continue; | |
774 | ||
775 | /* register the correct driver, if possible, to check whether | |
776 | * registering a dummy handle works, i.e. if the IRQ isn't | |
777 | * marked as used by the kernel resource management core */ | |
778 | ret = request_irq(irq, test_action, type, p_dev->devname, | |
779 | p_dev); | |
780 | if (!ret) { | |
781 | free_irq(irq, p_dev); | |
6f840afb | 782 | p_dev->irq_v = s->pcmcia_irq = irq; |
6f0f38c4 DB |
783 | pcmcia_used_irq[irq]++; |
784 | break; | |
785 | } | |
786 | } | |
787 | ||
788 | return ret; | |
789 | } | |
790 | ||
791 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
792 | { | |
6f840afb DB |
793 | pcmcia_used_irq[s->pcmcia_irq]--; |
794 | s->pcmcia_irq = 0; | |
6f0f38c4 DB |
795 | } |
796 | ||
797 | #else /* CONFIG_PCMCIA_PROBE */ | |
798 | ||
799 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
800 | { | |
801 | return -EINVAL; | |
802 | } | |
803 | ||
804 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
805 | { | |
6f840afb | 806 | s->pcmcia_irq = 0; |
6f0f38c4 DB |
807 | return; |
808 | } | |
809 | ||
810 | #endif /* CONFIG_PCMCIA_PROBE */ | |
811 | ||
812 | ||
813 | /** | |
814 | * pcmcia_setup_irq() - determine IRQ to be used for device | |
815 | * @p_dev - the associated PCMCIA device | |
816 | * | |
817 | * locking note: must be called with ops_mutex locked. | |
818 | */ | |
819 | int pcmcia_setup_irq(struct pcmcia_device *p_dev) | |
820 | { | |
821 | struct pcmcia_socket *s = p_dev->socket; | |
822 | ||
823 | if (p_dev->irq_v) | |
824 | return 0; | |
825 | ||
826 | /* already assigned? */ | |
6f840afb DB |
827 | if (s->pcmcia_irq) { |
828 | p_dev->irq_v = s->pcmcia_irq; | |
6f0f38c4 DB |
829 | return 0; |
830 | } | |
831 | ||
832 | /* prefer an exclusive ISA irq */ | |
833 | if (!pcmcia_setup_isa_irq(p_dev, 0)) | |
834 | return 0; | |
835 | ||
836 | /* but accept a shared ISA irq */ | |
837 | if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED)) | |
838 | return 0; | |
839 | ||
840 | /* but use the PCI irq otherwise */ | |
841 | if (s->pci_irq) { | |
6f840afb | 842 | p_dev->irq_v = s->pcmcia_irq = s->pci_irq; |
6f0f38c4 DB |
843 | return 0; |
844 | } | |
845 | ||
846 | return -EINVAL; | |
847 | } | |
848 | ||
849 | ||
1a8d4663 DB |
850 | /** pcmcia_request_window |
851 | * | |
852 | * Request_window() establishes a mapping between card memory space | |
853 | * and system memory space. | |
854 | */ | |
6838b03f | 855 | int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 856 | { |
6838b03f | 857 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 858 | pccard_mem_map *win; |
1a8d4663 DB |
859 | u_long align; |
860 | int w; | |
861 | ||
6d9a299f DB |
862 | if (!(s->state & SOCKET_PRESENT)) { |
863 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 864 | return -ENODEV; |
6d9a299f | 865 | } |
610e2374 | 866 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) { |
d50dbec3 | 867 | dev_dbg(&s->dev, "bad attribute setting for iomem region\n"); |
610e2374 DB |
868 | return -EINVAL; |
869 | } | |
1a8d4663 DB |
870 | |
871 | /* Window size defaults to smallest available */ | |
872 | if (req->Size == 0) | |
873 | req->Size = s->map_size; | |
874 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
875 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
876 | req->Size : s->map_size); | |
69ba4433 | 877 | if (req->Size & (s->map_size-1)) { |
d50dbec3 | 878 | dev_dbg(&s->dev, "invalid map size\n"); |
69ba4433 DB |
879 | return -EINVAL; |
880 | } | |
1a8d4663 | 881 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || |
69ba4433 | 882 | (req->Base & (align-1))) { |
d50dbec3 | 883 | dev_dbg(&s->dev, "invalid base address\n"); |
69ba4433 DB |
884 | return -EINVAL; |
885 | } | |
1a8d4663 DB |
886 | if (req->Base) |
887 | align = 0; | |
888 | ||
889 | /* Allocate system memory window */ | |
890 | for (w = 0; w < MAX_WIN; w++) | |
9fea84f4 DB |
891 | if (!(s->state & SOCKET_WIN_REQ(w))) |
892 | break; | |
f958095e | 893 | if (w == MAX_WIN) { |
d50dbec3 | 894 | dev_dbg(&s->dev, "all windows are used already\n"); |
f958095e DB |
895 | return -EINVAL; |
896 | } | |
1a8d4663 | 897 | |
6b8e087b | 898 | mutex_lock(&s->ops_mutex); |
1a8d4663 | 899 | win = &s->win[w]; |
1a8d4663 DB |
900 | |
901 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
82f88e36 | 902 | win->res = pcmcia_find_mem_region(req->Base, req->Size, align, |
1a8d4663 | 903 | (req->Attributes & WIN_MAP_BELOW_1MB), s); |
82f88e36 | 904 | if (!win->res) { |
d50dbec3 | 905 | dev_dbg(&s->dev, "allocating mem region failed\n"); |
6b8e087b | 906 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
907 | return -EINVAL; |
908 | } | |
1a8d4663 | 909 | } |
6838b03f | 910 | p_dev->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
911 | |
912 | /* Configure the socket controller */ | |
82f88e36 DB |
913 | win->map = w+1; |
914 | win->flags = 0; | |
915 | win->speed = req->AccessSpeed; | |
1a8d4663 | 916 | if (req->Attributes & WIN_MEMORY_TYPE) |
82f88e36 | 917 | win->flags |= MAP_ATTRIB; |
1a8d4663 | 918 | if (req->Attributes & WIN_ENABLE) |
82f88e36 | 919 | win->flags |= MAP_ACTIVE; |
1a8d4663 | 920 | if (req->Attributes & WIN_DATA_WIDTH_16) |
82f88e36 | 921 | win->flags |= MAP_16BIT; |
1a8d4663 | 922 | if (req->Attributes & WIN_USE_WAIT) |
82f88e36 DB |
923 | win->flags |= MAP_USE_WAIT; |
924 | win->card_start = 0; | |
6b8e087b | 925 | |
82f88e36 | 926 | if (s->ops->set_mem_map(s, win) != 0) { |
d50dbec3 | 927 | dev_dbg(&s->dev, "failed to set memory mapping\n"); |
6b8e087b | 928 | mutex_unlock(&s->ops_mutex); |
926c5402 DB |
929 | return -EIO; |
930 | } | |
1a8d4663 DB |
931 | s->state |= SOCKET_WIN_REQ(w); |
932 | ||
933 | /* Return window handle */ | |
9fea84f4 | 934 | if (s->features & SS_CAP_STATIC_MAP) |
82f88e36 | 935 | req->Base = win->static_start; |
9fea84f4 | 936 | else |
82f88e36 | 937 | req->Base = win->res->start; |
9fea84f4 | 938 | |
6b8e087b | 939 | mutex_unlock(&s->ops_mutex); |
0bdf9b3d | 940 | *wh = w + 1; |
1a8d4663 | 941 | |
4c89e88b | 942 | return 0; |
1a8d4663 DB |
943 | } /* pcmcia_request_window */ |
944 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc | 945 | |
9fea84f4 DB |
946 | void pcmcia_disable_device(struct pcmcia_device *p_dev) |
947 | { | |
5f2a71fc | 948 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
949 | pcmcia_release_io(p_dev, &p_dev->io); |
950 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 951 | if (p_dev->win) |
f5560da5 | 952 | pcmcia_release_window(p_dev, p_dev->win); |
5f2a71fc DB |
953 | } |
954 | EXPORT_SYMBOL(pcmcia_disable_device); | |
a804b574 DB |
955 | |
956 | ||
957 | struct pcmcia_cfg_mem { | |
91284224 DB |
958 | struct pcmcia_device *p_dev; |
959 | void *priv_data; | |
960 | int (*conf_check) (struct pcmcia_device *p_dev, | |
961 | cistpl_cftable_entry_t *cfg, | |
962 | cistpl_cftable_entry_t *dflt, | |
963 | unsigned int vcc, | |
964 | void *priv_data); | |
a804b574 | 965 | cisparse_t parse; |
8e2fc39d | 966 | cistpl_cftable_entry_t dflt; |
a804b574 DB |
967 | }; |
968 | ||
91284224 DB |
969 | /** |
970 | * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() | |
971 | * | |
972 | * pcmcia_do_loop_config() is the internal callback for the call from | |
973 | * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred | |
974 | * by a struct pcmcia_cfg_mem. | |
975 | */ | |
976 | static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) | |
977 | { | |
978 | cistpl_cftable_entry_t *cfg = &parse->cftable_entry; | |
979 | struct pcmcia_cfg_mem *cfg_mem = priv; | |
980 | ||
981 | /* default values */ | |
982 | cfg_mem->p_dev->conf.ConfigIndex = cfg->index; | |
983 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) | |
984 | cfg_mem->dflt = *cfg; | |
985 | ||
986 | return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt, | |
987 | cfg_mem->p_dev->socket->socket.Vcc, | |
988 | cfg_mem->priv_data); | |
989 | } | |
990 | ||
a804b574 DB |
991 | /** |
992 | * pcmcia_loop_config() - loop over configuration options | |
993 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
994 | * @conf_check: function to call for each configuration option. | |
995 | * It gets passed the struct pcmcia_device, the CIS data | |
996 | * describing the configuration option, and private data | |
997 | * being passed to pcmcia_loop_config() | |
998 | * @priv_data: private data to be passed to the conf_check function. | |
999 | * | |
1000 | * pcmcia_loop_config() loops over all configuration options, and calls | |
1001 | * the driver-specific conf_check() for each one, checking whether | |
889c2774 | 1002 | * it is a valid one. Returns 0 on success or errorcode otherwise. |
a804b574 DB |
1003 | */ |
1004 | int pcmcia_loop_config(struct pcmcia_device *p_dev, | |
1005 | int (*conf_check) (struct pcmcia_device *p_dev, | |
1006 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 1007 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 1008 | unsigned int vcc, |
a804b574 DB |
1009 | void *priv_data), |
1010 | void *priv_data) | |
1011 | { | |
1012 | struct pcmcia_cfg_mem *cfg_mem; | |
889c2774 | 1013 | int ret; |
a804b574 DB |
1014 | |
1015 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); | |
1016 | if (cfg_mem == NULL) | |
1017 | return -ENOMEM; | |
1018 | ||
91284224 DB |
1019 | cfg_mem->p_dev = p_dev; |
1020 | cfg_mem->conf_check = conf_check; | |
1021 | cfg_mem->priv_data = priv_data; | |
ad913c11 | 1022 | |
91284224 DB |
1023 | ret = pccard_loop_tuple(p_dev->socket, p_dev->func, |
1024 | CISTPL_CFTABLE_ENTRY, &cfg_mem->parse, | |
1025 | cfg_mem, pcmcia_do_loop_config); | |
a804b574 | 1026 | |
91284224 DB |
1027 | kfree(cfg_mem); |
1028 | return ret; | |
1029 | } | |
1030 | EXPORT_SYMBOL(pcmcia_loop_config); | |
498ac189 | 1031 | |
a804b574 | 1032 | |
91284224 DB |
1033 | struct pcmcia_loop_mem { |
1034 | struct pcmcia_device *p_dev; | |
1035 | void *priv_data; | |
1036 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
1037 | tuple_t *tuple, | |
1038 | void *priv_data); | |
1039 | }; | |
a804b574 | 1040 | |
91284224 DB |
1041 | /** |
1042 | * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() | |
1043 | * | |
1044 | * pcmcia_do_loop_tuple() is the internal callback for the call from | |
1045 | * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred | |
1046 | * by a struct pcmcia_cfg_mem. | |
1047 | */ | |
1048 | static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) | |
1049 | { | |
1050 | struct pcmcia_loop_mem *loop = priv; | |
498ac189 | 1051 | |
91284224 DB |
1052 | return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); |
1053 | }; | |
1054 | ||
1055 | /** | |
1056 | * pcmcia_loop_tuple() - loop over tuples in the CIS | |
1057 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1058 | * @code: which CIS code shall we look for? | |
1059 | * @priv_data: private data to be passed to the loop_tuple function. | |
1060 | * @loop_tuple: function to call for each CIS entry of type @function. IT | |
1061 | * gets passed the raw tuple and @priv_data. | |
1062 | * | |
1063 | * pcmcia_loop_tuple() loops over all CIS entries of type @function, and | |
1064 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple | |
1065 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. | |
1066 | */ | |
1067 | int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1068 | int (*loop_tuple) (struct pcmcia_device *p_dev, | |
1069 | tuple_t *tuple, | |
1070 | void *priv_data), | |
1071 | void *priv_data) | |
1072 | { | |
1073 | struct pcmcia_loop_mem loop = { | |
1074 | .p_dev = p_dev, | |
1075 | .loop_tuple = loop_tuple, | |
1076 | .priv_data = priv_data}; | |
1077 | ||
1078 | return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL, | |
1079 | &loop, pcmcia_do_loop_tuple); | |
9fea84f4 | 1080 | } |
91284224 | 1081 | EXPORT_SYMBOL(pcmcia_loop_tuple); |
a804b574 | 1082 | |
91284224 DB |
1083 | |
1084 | struct pcmcia_loop_get { | |
1085 | size_t len; | |
1086 | cisdata_t **buf; | |
1087 | }; | |
1088 | ||
1089 | /** | |
1090 | * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() | |
1091 | * | |
1092 | * pcmcia_do_get_tuple() is the internal callback for the call from | |
1093 | * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in | |
1094 | * the first tuple, return 0 unconditionally. Create a memory buffer large | |
1095 | * enough to hold the content of the tuple, and fill it with the tuple data. | |
1096 | * The caller is responsible to free the buffer. | |
1097 | */ | |
1098 | static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1099 | void *priv) | |
1100 | { | |
1101 | struct pcmcia_loop_get *get = priv; | |
1102 | ||
1103 | *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL); | |
1104 | if (*get->buf) { | |
1105 | get->len = tuple->TupleDataLen; | |
1106 | memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); | |
6d9a299f DB |
1107 | } else |
1108 | dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n"); | |
91284224 | 1109 | return 0; |
9fea84f4 | 1110 | } |
91284224 DB |
1111 | |
1112 | /** | |
1113 | * pcmcia_get_tuple() - get first tuple from CIS | |
1114 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
1115 | * @code: which CIS code shall we look for? | |
1116 | * @buf: pointer to store the buffer to. | |
1117 | * | |
1118 | * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. | |
1119 | * It returns the buffer length (or zero). The caller is responsible to free | |
1120 | * the buffer passed in @buf. | |
1121 | */ | |
1122 | size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, | |
1123 | unsigned char **buf) | |
1124 | { | |
1125 | struct pcmcia_loop_get get = { | |
1126 | .len = 0, | |
1127 | .buf = buf, | |
1128 | }; | |
1129 | ||
1130 | *get.buf = NULL; | |
1131 | pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get); | |
1132 | ||
1133 | return get.len; | |
9fea84f4 | 1134 | } |
91284224 DB |
1135 | EXPORT_SYMBOL(pcmcia_get_tuple); |
1136 | ||
1137 | ||
1138 | /** | |
1139 | * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() | |
1140 | * | |
1141 | * pcmcia_do_get_mac() is the internal callback for the call from | |
1142 | * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the | |
1143 | * tuple contains a proper LAN_NODE_ID of length 6, and copy the data | |
1144 | * to struct net_device->dev_addr[i]. | |
1145 | */ | |
1146 | static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, | |
1147 | void *priv) | |
1148 | { | |
1149 | struct net_device *dev = priv; | |
1150 | int i; | |
1151 | ||
1152 | if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID) | |
1153 | return -EINVAL; | |
1154 | if (tuple->TupleDataLen < ETH_ALEN + 2) { | |
1155 | dev_warn(&p_dev->dev, "Invalid CIS tuple length for " | |
1156 | "LAN_NODE_ID\n"); | |
1157 | return -EINVAL; | |
1158 | } | |
1159 | ||
1160 | if (tuple->TupleData[1] != ETH_ALEN) { | |
1161 | dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n"); | |
1162 | return -EINVAL; | |
1163 | } | |
1164 | for (i = 0; i < 6; i++) | |
1165 | dev->dev_addr[i] = tuple->TupleData[i+2]; | |
1166 | return 0; | |
9fea84f4 | 1167 | } |
91284224 DB |
1168 | |
1169 | /** | |
1170 | * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE | |
1171 | * @p_dev: the struct pcmcia_device for which we want the address. | |
1172 | * @dev: a properly prepared struct net_device to store the info to. | |
1173 | * | |
1174 | * pcmcia_get_mac_from_cis() reads out the hardware MAC address from | |
1175 | * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which | |
1176 | * must be set up properly by the driver (see examples!). | |
1177 | */ | |
1178 | int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) | |
1179 | { | |
1180 | return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev); | |
9fea84f4 | 1181 | } |
91284224 | 1182 | EXPORT_SYMBOL(pcmcia_get_mac_from_cis); |
a804b574 | 1183 |