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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/ss.h> |
29 | #include <pcmcia/cs.h> | |
1a8d4663 DB |
30 | #include <pcmcia/cistpl.h> |
31 | #include <pcmcia/cisreg.h> | |
32 | #include <pcmcia/ds.h> | |
33 | ||
34 | #include "cs_internal.h" | |
1a8d4663 DB |
35 | |
36 | ||
1a8d4663 | 37 | /* Access speed for IO windows */ |
9fea84f4 | 38 | static int io_speed; |
1a8d4663 DB |
39 | module_param(io_speed, int, 0444); |
40 | ||
41 | ||
a3ac9af5 DB |
42 | int pcmcia_validate_mem(struct pcmcia_socket *s) |
43 | { | |
44 | if (s->resource_ops->validate_mem) | |
45 | return s->resource_ops->validate_mem(s); | |
46 | /* if there is no callback, we can assume that everything is OK */ | |
47 | return 0; | |
48 | } | |
49 | ||
50 | struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, | |
51 | int low, struct pcmcia_socket *s) | |
52 | { | |
53 | if (s->resource_ops->find_mem) | |
54 | return s->resource_ops->find_mem(base, num, align, low, s); | |
55 | return NULL; | |
56 | } | |
57 | ||
1a8d4663 | 58 | |
ad0c7be2 DB |
59 | static void release_io_space(struct pcmcia_socket *s, struct resource *res) |
60 | { | |
61 | resource_size_t num = resource_size(res); | |
62 | int i; | |
63 | ||
64 | dev_dbg(&s->dev, "release_io_space for %pR\n", res); | |
65 | ||
66 | for (i = 0; i < MAX_IO_WIN; i++) { | |
67 | if (!s->io[i].res) | |
68 | continue; | |
69 | if ((s->io[i].res->start <= res->start) && | |
70 | (s->io[i].res->end >= res->end)) { | |
71 | s->io[i].InUse -= num; | |
72 | if (res->parent) | |
73 | release_resource(res); | |
74 | res->start = res->end = 0; | |
75 | res->flags = IORESOURCE_IO; | |
76 | /* Free the window if no one else is using it */ | |
77 | if (s->io[i].InUse == 0) { | |
78 | release_resource(s->io[i].res); | |
79 | kfree(s->io[i].res); | |
80 | s->io[i].res = NULL; | |
81 | } | |
82 | } | |
83 | } | |
84 | } /* release_io_space */ | |
85 | ||
1a8d4663 DB |
86 | /** alloc_io_space |
87 | * | |
88 | * Special stuff for managing IO windows, because they are scarce | |
89 | */ | |
2ce4905e DB |
90 | static int alloc_io_space(struct pcmcia_socket *s, struct resource *res, |
91 | unsigned int lines) | |
1a8d4663 | 92 | { |
b19a7275 | 93 | unsigned int align; |
2ce4905e DB |
94 | unsigned int base = res->start; |
95 | unsigned int num = res->end; | |
96 | int ret; | |
97 | ||
98 | res->flags |= IORESOURCE_IO; | |
1a8d4663 | 99 | |
90abdc3b DB |
100 | dev_dbg(&s->dev, "alloc_io_space request for %pR, %d lines\n", |
101 | res, lines); | |
2ce4905e DB |
102 | |
103 | align = base ? (lines ? 1<<lines : 0) : 1; | |
1a8d4663 | 104 | if (align && (align < num)) { |
2ce4905e DB |
105 | if (base) { |
106 | dev_dbg(&s->dev, "odd IO request\n"); | |
1a8d4663 DB |
107 | align = 0; |
108 | } else | |
9fea84f4 DB |
109 | while (align && (align < num)) |
110 | align <<= 1; | |
1a8d4663 | 111 | } |
2ce4905e DB |
112 | if (base & ~(align-1)) { |
113 | dev_dbg(&s->dev, "odd IO request\n"); | |
1a8d4663 DB |
114 | align = 0; |
115 | } | |
b19a7275 | 116 | |
ad0c7be2 DB |
117 | ret = s->resource_ops->find_io(s, res->flags, &base, num, align, |
118 | &res->parent); | |
2ce4905e | 119 | if (ret) { |
ad0c7be2 | 120 | dev_dbg(&s->dev, "alloc_io_space request failed (%d)\n", ret); |
2ce4905e DB |
121 | return -EINVAL; |
122 | } | |
123 | ||
124 | res->start = base; | |
125 | res->end = res->start + num - 1; | |
1a8d4663 | 126 | |
ad0c7be2 DB |
127 | if (res->parent) { |
128 | ret = request_resource(res->parent, res); | |
129 | if (ret) { | |
130 | dev_warn(&s->dev, | |
131 | "request_resource %pR failed: %d\n", res, ret); | |
132 | res->parent = NULL; | |
133 | release_io_space(s, res); | |
1a8d4663 DB |
134 | } |
135 | } | |
ad0c7be2 DB |
136 | dev_dbg(&s->dev, "alloc_io_space request result %d: %pR\n", ret, res); |
137 | return ret; | |
138 | } /* alloc_io_space */ | |
1a8d4663 DB |
139 | |
140 | ||
1d5cc192 DB |
141 | /** |
142 | * pcmcia_access_config() - read or write card configuration registers | |
1a8d4663 | 143 | * |
1d5cc192 DB |
144 | * pcmcia_access_config() reads and writes configuration registers in |
145 | * attribute memory. Memory window 0 is reserved for this and the tuple | |
146 | * reading services. Drivers must use pcmcia_read_config_byte() or | |
147 | * pcmcia_write_config_byte(). | |
1a8d4663 | 148 | */ |
1d5cc192 DB |
149 | static int pcmcia_access_config(struct pcmcia_device *p_dev, |
150 | off_t where, u8 *val, | |
151 | int (*accessf) (struct pcmcia_socket *s, | |
152 | int attr, unsigned int addr, | |
153 | unsigned int len, void *ptr)) | |
1a8d4663 | 154 | { |
855cdf13 | 155 | struct pcmcia_socket *s; |
1a8d4663 DB |
156 | config_t *c; |
157 | int addr; | |
059f667d | 158 | int ret = 0; |
1a8d4663 | 159 | |
855cdf13 | 160 | s = p_dev->socket; |
94a819f8 DB |
161 | |
162 | mutex_lock(&s->ops_mutex); | |
855cdf13 | 163 | c = p_dev->function_config; |
1a8d4663 | 164 | |
6d9a299f | 165 | if (!(c->state & CONFIG_LOCKED)) { |
eb838fe1 | 166 | dev_dbg(&p_dev->dev, "Configuration isnt't locked\n"); |
94a819f8 | 167 | mutex_unlock(&s->ops_mutex); |
943f70f1 | 168 | return -EACCES; |
6d9a299f | 169 | } |
1a8d4663 | 170 | |
1d5cc192 DB |
171 | addr = (c->ConfigBase + where) >> 1; |
172 | ||
173 | ret = accessf(s, 1, addr, 1, val); | |
174 | ||
059f667d | 175 | mutex_unlock(&s->ops_mutex); |
1d5cc192 | 176 | |
059f667d | 177 | return ret; |
1d5cc192 DB |
178 | } /* pcmcia_access_config */ |
179 | ||
180 | ||
181 | /** | |
182 | * pcmcia_read_config_byte() - read a byte from a card configuration register | |
183 | * | |
184 | * pcmcia_read_config_byte() reads a byte from a configuration register in | |
185 | * attribute memory. | |
186 | */ | |
187 | int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val) | |
188 | { | |
189 | return pcmcia_access_config(p_dev, where, val, pcmcia_read_cis_mem); | |
190 | } | |
191 | EXPORT_SYMBOL(pcmcia_read_config_byte); | |
192 | ||
193 | ||
194 | /** | |
195 | * pcmcia_write_config_byte() - write a byte to a card configuration register | |
196 | * | |
197 | * pcmcia_write_config_byte() writes a byte to a configuration register in | |
198 | * attribute memory. | |
199 | */ | |
200 | int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val) | |
201 | { | |
202 | return pcmcia_access_config(p_dev, where, &val, pcmcia_write_cis_mem); | |
203 | } | |
204 | EXPORT_SYMBOL(pcmcia_write_config_byte); | |
3448139b | 205 | |
1a8d4663 | 206 | |
cdb13808 | 207 | int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res, |
b5cb259e | 208 | unsigned int offset) |
1a8d4663 | 209 | { |
0bdf9b3d | 210 | struct pcmcia_socket *s = p_dev->socket; |
0ca724d3 | 211 | unsigned int w; |
6b8e087b | 212 | int ret; |
868575d1 | 213 | |
0ca724d3 DB |
214 | w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1; |
215 | if (w >= MAX_WIN) | |
ffb8da20 | 216 | return -EINVAL; |
b5cb259e | 217 | |
6b8e087b | 218 | mutex_lock(&s->ops_mutex); |
0ca724d3 DB |
219 | s->win[w].card_start = offset; |
220 | ret = s->ops->set_mem_map(s, &s->win[w]); | |
6b8e087b | 221 | if (ret) |
eb838fe1 | 222 | dev_warn(&p_dev->dev, "failed to set_mem_map\n"); |
6b8e087b DB |
223 | mutex_unlock(&s->ops_mutex); |
224 | return ret; | |
1a8d4663 DB |
225 | } /* pcmcia_map_mem_page */ |
226 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
227 | ||
228 | ||
fb49fa53 DB |
229 | /** |
230 | * pcmcia_fixup_iowidth() - reduce io width to 8bit | |
1a8d4663 | 231 | * |
fb49fa53 DB |
232 | * pcmcia_fixup_iowidth() allows a PCMCIA device driver to reduce the |
233 | * IO width to 8bit after having called pcmcia_request_configuration() | |
234 | * previously. | |
1a8d4663 | 235 | */ |
fb49fa53 | 236 | int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev) |
1a8d4663 | 237 | { |
fb49fa53 DB |
238 | struct pcmcia_socket *s = p_dev->socket; |
239 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
240 | pccard_io_map io_on; | |
241 | int i, ret = 0; | |
94a819f8 DB |
242 | |
243 | mutex_lock(&s->ops_mutex); | |
dbb22f0d | 244 | |
fb49fa53 DB |
245 | dev_dbg(&p_dev->dev, "fixup iowidth to 8bit\n"); |
246 | ||
247 | if (!(s->state & SOCKET_PRESENT) || | |
248 | !(p_dev->function_config->state & CONFIG_LOCKED)) { | |
249 | dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); | |
4e06e240 JS |
250 | ret = -EACCES; |
251 | goto unlock; | |
6d9a299f | 252 | } |
1a8d4663 | 253 | |
fb49fa53 DB |
254 | io_on.speed = io_speed; |
255 | for (i = 0; i < MAX_IO_WIN; i++) { | |
256 | if (!s->io[i].res) | |
257 | continue; | |
258 | io_off.map = i; | |
259 | io_on.map = i; | |
260 | ||
261 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
262 | io_on.start = s->io[i].res->start; | |
263 | io_on.stop = s->io[i].res->end; | |
264 | ||
265 | s->ops->set_io_map(s, &io_off); | |
266 | mdelay(40); | |
267 | s->ops->set_io_map(s, &io_on); | |
d8b0a49d | 268 | } |
fb49fa53 DB |
269 | unlock: |
270 | mutex_unlock(&s->ops_mutex); | |
1a8d4663 | 271 | |
fb49fa53 DB |
272 | return ret; |
273 | } | |
274 | EXPORT_SYMBOL(pcmcia_fixup_iowidth); | |
275 | ||
276 | ||
277 | /** | |
278 | * pcmcia_fixup_vpp() - set Vpp to a new voltage level | |
279 | * | |
280 | * pcmcia_fixup_vpp() allows a PCMCIA device driver to set Vpp to | |
281 | * a new voltage level between calls to pcmcia_request_configuration() | |
282 | * and pcmcia_disable_device(). | |
283 | */ | |
284 | int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp) | |
285 | { | |
286 | struct pcmcia_socket *s = p_dev->socket; | |
287 | int ret = 0; | |
288 | ||
289 | mutex_lock(&s->ops_mutex); | |
290 | ||
291 | dev_dbg(&p_dev->dev, "fixup Vpp to %d\n", new_vpp); | |
292 | ||
293 | if (!(s->state & SOCKET_PRESENT) || | |
294 | !(p_dev->function_config->state & CONFIG_LOCKED)) { | |
295 | dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); | |
296 | ret = -EACCES; | |
4e06e240 | 297 | goto unlock; |
d8b0a49d | 298 | } |
1a8d4663 | 299 | |
fb49fa53 DB |
300 | s->socket.Vpp = new_vpp; |
301 | if (s->ops->set_socket(s, &s->socket)) { | |
302 | dev_warn(&p_dev->dev, "Unable to set VPP\n"); | |
303 | ret = -EIO; | |
304 | goto unlock; | |
4bbed523 | 305 | } |
fb49fa53 | 306 | |
4e06e240 | 307 | unlock: |
94a819f8 | 308 | mutex_unlock(&s->ops_mutex); |
4bbed523 | 309 | |
4e06e240 | 310 | return ret; |
fb49fa53 DB |
311 | } |
312 | EXPORT_SYMBOL(pcmcia_fixup_vpp); | |
1a8d4663 DB |
313 | |
314 | ||
2bc5a9bd | 315 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
316 | { |
317 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 318 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 | 319 | config_t *c; |
1a8d4663 DB |
320 | int i; |
321 | ||
9e86749c | 322 | mutex_lock(&s->ops_mutex); |
94a819f8 | 323 | c = p_dev->function_config; |
e2d40963 DB |
324 | if (p_dev->_locked) { |
325 | p_dev->_locked = 0; | |
1a8d4663 DB |
326 | if (--(s->lock_count) == 0) { |
327 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
328 | s->socket.Vpp = 0; | |
329 | s->socket.io_irq = 0; | |
330 | s->ops->set_socket(s, &s->socket); | |
331 | } | |
5f2a71fc DB |
332 | } |
333 | if (c->state & CONFIG_LOCKED) { | |
334 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
335 | if (c->state & CONFIG_IO_REQ) |
336 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 337 | if (!s->io[i].res) |
1a8d4663 DB |
338 | continue; |
339 | s->io[i].Config--; | |
340 | if (s->io[i].Config != 0) | |
341 | continue; | |
342 | io.map = i; | |
343 | s->ops->set_io_map(s, &io); | |
344 | } | |
1a8d4663 | 345 | } |
9e86749c | 346 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 347 | |
4c89e88b | 348 | return 0; |
1a8d4663 | 349 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
350 | |
351 | ||
352 | /** pcmcia_release_io | |
353 | * | |
354 | * Release_io() releases the I/O ranges allocated by a client. This | |
355 | * may be invoked some time after a card ejection has already dumped | |
356 | * the actual socket configuration, so if the client is "stale", we | |
357 | * don't bother checking the port ranges against the current socket | |
358 | * values. | |
359 | */ | |
2ce4905e | 360 | static int pcmcia_release_io(struct pcmcia_device *p_dev) |
1a8d4663 | 361 | { |
2bc5a9bd | 362 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 DB |
363 | int ret = -EINVAL; |
364 | config_t *c; | |
365 | ||
366 | mutex_lock(&s->ops_mutex); | |
9fea84f4 | 367 | if (!p_dev->_io) |
94a819f8 | 368 | goto out; |
5f2a71fc | 369 | |
2ce4905e | 370 | c = p_dev->function_config; |
1a8d4663 | 371 | |
2ce4905e | 372 | release_io_space(s, &c->io[0]); |
5f2a71fc | 373 | |
2ce4905e DB |
374 | if (c->io[1].end) |
375 | release_io_space(s, &c->io[1]); | |
1a8d4663 | 376 | |
2ce4905e DB |
377 | p_dev->_io = 0; |
378 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 | 379 | |
94a819f8 DB |
380 | out: |
381 | mutex_unlock(&s->ops_mutex); | |
382 | ||
383 | return ret; | |
1a8d4663 | 384 | } /* pcmcia_release_io */ |
1a8d4663 | 385 | |
cdb13808 DB |
386 | /** |
387 | * pcmcia_release_window() - release reserved iomem for PCMCIA devices | |
388 | * | |
389 | * pcmcia_release_window() releases struct resource *res which was | |
390 | * previously reserved by calling pcmcia_request_window(). | |
391 | */ | |
0ca724d3 | 392 | int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res) |
1a8d4663 | 393 | { |
0bdf9b3d | 394 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 395 | pccard_mem_map *win; |
0ca724d3 | 396 | unsigned int w; |
1a8d4663 | 397 | |
0ca724d3 DB |
398 | dev_dbg(&p_dev->dev, "releasing window %pR\n", res); |
399 | ||
400 | w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1; | |
401 | if (w >= MAX_WIN) | |
ffb8da20 | 402 | return -EINVAL; |
0bdf9b3d | 403 | |
6b8e087b | 404 | mutex_lock(&s->ops_mutex); |
0ca724d3 | 405 | win = &s->win[w]; |
0bdf9b3d | 406 | |
0ca724d3 | 407 | if (!(p_dev->_win & CLIENT_WIN_REQ(w))) { |
eb838fe1 | 408 | dev_dbg(&p_dev->dev, "not releasing unknown window\n"); |
6b8e087b | 409 | mutex_unlock(&s->ops_mutex); |
ffb8da20 | 410 | return -EINVAL; |
6d9a299f | 411 | } |
1a8d4663 DB |
412 | |
413 | /* Shut down memory window */ | |
82f88e36 DB |
414 | win->flags &= ~MAP_ACTIVE; |
415 | s->ops->set_mem_map(s, win); | |
0ca724d3 | 416 | s->state &= ~SOCKET_WIN_REQ(w); |
1a8d4663 DB |
417 | |
418 | /* Release system memory */ | |
82f88e36 | 419 | if (win->res) { |
ad0c7be2 | 420 | release_resource(res); |
82f88e36 DB |
421 | release_resource(win->res); |
422 | kfree(win->res); | |
423 | win->res = NULL; | |
1a8d4663 | 424 | } |
cdb13808 DB |
425 | res->start = res->end = 0; |
426 | res->flags = IORESOURCE_MEM; | |
0ca724d3 | 427 | p_dev->_win &= ~CLIENT_WIN_REQ(w); |
6b8e087b | 428 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 429 | |
4c89e88b | 430 | return 0; |
1a8d4663 DB |
431 | } /* pcmcia_release_window */ |
432 | EXPORT_SYMBOL(pcmcia_release_window); | |
433 | ||
434 | ||
2bc5a9bd | 435 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
436 | config_req_t *req) |
437 | { | |
438 | int i; | |
439 | u_int base; | |
2bc5a9bd | 440 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
441 | config_t *c; |
442 | pccard_io_map iomap; | |
443 | ||
1a8d4663 | 444 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 445 | return -ENODEV; |
1a8d4663 | 446 | |
de6405e9 | 447 | if (req->IntType & INT_CARDBUS) { |
eb838fe1 | 448 | dev_dbg(&p_dev->dev, "IntType may not be INT_CARDBUS\n"); |
de6405e9 DB |
449 | return -EINVAL; |
450 | } | |
94a819f8 DB |
451 | |
452 | mutex_lock(&s->ops_mutex); | |
dbb22f0d | 453 | c = p_dev->function_config; |
6d9a299f | 454 | if (c->state & CONFIG_LOCKED) { |
94a819f8 | 455 | mutex_unlock(&s->ops_mutex); |
eb838fe1 | 456 | dev_dbg(&p_dev->dev, "Configuration is locked\n"); |
943f70f1 | 457 | return -EACCES; |
6d9a299f | 458 | } |
1a8d4663 DB |
459 | |
460 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 461 | s->socket.Vpp = req->Vpp; |
d8b0a49d | 462 | if (s->ops->set_socket(s, &s->socket)) { |
9e86749c | 463 | mutex_unlock(&s->ops_mutex); |
eb838fe1 | 464 | dev_printk(KERN_WARNING, &p_dev->dev, |
d8b0a49d DB |
465 | "Unable to set socket state\n"); |
466 | return -EINVAL; | |
467 | } | |
1a8d4663 | 468 | |
1a8d4663 DB |
469 | /* Pick memory or I/O card, DMA mode, interrupt */ |
470 | c->IntType = req->IntType; | |
471 | c->Attributes = req->Attributes; | |
472 | if (req->IntType & INT_MEMORY_AND_IO) | |
473 | s->socket.flags |= SS_IOCARD; | |
474 | if (req->IntType & INT_ZOOMED_VIDEO) | |
475 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
476 | if (req->Attributes & CONF_ENABLE_DMA) | |
477 | s->socket.flags |= SS_DMA_MODE; | |
478 | if (req->Attributes & CONF_ENABLE_SPKR) | |
479 | s->socket.flags |= SS_SPKR_ENA; | |
480 | if (req->Attributes & CONF_ENABLE_IRQ) | |
6f840afb | 481 | s->socket.io_irq = s->pcmcia_irq; |
1a8d4663 DB |
482 | else |
483 | s->socket.io_irq = 0; | |
484 | s->ops->set_socket(s, &s->socket); | |
485 | s->lock_count++; | |
486 | ||
487 | /* Set up CIS configuration registers */ | |
488 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 489 | c->CardValues = req->Present; |
1a8d4663 DB |
490 | if (req->Present & PRESENT_COPY) { |
491 | c->Copy = req->Copy; | |
492 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
493 | } | |
494 | if (req->Present & PRESENT_OPTION) { | |
495 | if (s->functions == 1) { | |
496 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
497 | } else { | |
498 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
499 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
500 | if (req->Present & PRESENT_IOBASE_0) | |
501 | c->Option |= COR_ADDR_DECODE; | |
502 | } | |
a7debe78 DB |
503 | if ((req->Attributes & CONF_ENABLE_IRQ) && |
504 | !(req->Attributes & CONF_ENABLE_PULSE_IRQ)) | |
505 | c->Option |= COR_LEVEL_REQ; | |
1a8d4663 DB |
506 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); |
507 | mdelay(40); | |
508 | } | |
509 | if (req->Present & PRESENT_STATUS) { | |
510 | c->Status = req->Status; | |
511 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
512 | } | |
513 | if (req->Present & PRESENT_PIN_REPLACE) { | |
514 | c->Pin = req->Pin; | |
515 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
516 | } | |
517 | if (req->Present & PRESENT_EXT_STATUS) { | |
518 | c->ExtStatus = req->ExtStatus; | |
519 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
520 | } | |
521 | if (req->Present & PRESENT_IOBASE_0) { | |
2ce4905e | 522 | u8 b = c->io[0].start & 0xff; |
1a8d4663 | 523 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); |
2ce4905e | 524 | b = (c->io[0].start >> 8) & 0xff; |
1a8d4663 DB |
525 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); |
526 | } | |
527 | if (req->Present & PRESENT_IOSIZE) { | |
2ce4905e | 528 | u8 b = resource_size(&c->io[0]) + resource_size(&c->io[1]) - 1; |
1a8d4663 DB |
529 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); |
530 | } | |
531 | ||
532 | /* Configure I/O windows */ | |
533 | if (c->state & CONFIG_IO_REQ) { | |
534 | iomap.speed = io_speed; | |
535 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 536 | if (s->io[i].res) { |
1a8d4663 DB |
537 | iomap.map = i; |
538 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 539 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
540 | case IO_DATA_PATH_WIDTH_16: |
541 | iomap.flags |= MAP_16BIT; break; | |
542 | case IO_DATA_PATH_WIDTH_AUTO: | |
543 | iomap.flags |= MAP_AUTOSZ; break; | |
544 | default: | |
545 | break; | |
546 | } | |
c7d00693 DB |
547 | iomap.start = s->io[i].res->start; |
548 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
549 | s->ops->set_io_map(s, &iomap); |
550 | s->io[i].Config++; | |
551 | } | |
552 | } | |
553 | ||
554 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 555 | p_dev->_locked = 1; |
059f667d | 556 | mutex_unlock(&s->ops_mutex); |
4c89e88b | 557 | return 0; |
1a8d4663 DB |
558 | } /* pcmcia_request_configuration */ |
559 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
560 | ||
561 | ||
2ce4905e DB |
562 | /** |
563 | * pcmcia_request_io() - attempt to reserve port ranges for PCMCIA devices | |
564 | * | |
565 | * pcmcia_request_io() attepts to reserve the IO port ranges specified in | |
90abdc3b | 566 | * &struct pcmcia_device @p_dev->resource[0] and @p_dev->resource[1]. The |
2ce4905e | 567 | * "start" value is the requested start of the IO port resource; "end" |
90abdc3b DB |
568 | * reflects the number of ports requested. The number of IO lines requested |
569 | * is specified in &struct pcmcia_device @p_dev->io_lines. | |
1a8d4663 | 570 | */ |
90abdc3b | 571 | int pcmcia_request_io(struct pcmcia_device *p_dev) |
1a8d4663 | 572 | { |
2bc5a9bd | 573 | struct pcmcia_socket *s = p_dev->socket; |
90abdc3b | 574 | config_t *c = p_dev->function_config; |
94a819f8 DB |
575 | int ret = -EINVAL; |
576 | ||
577 | mutex_lock(&s->ops_mutex); | |
eb838fe1 DB |
578 | dev_dbg(&p_dev->dev, "pcmcia_request_io: %pR , %pR", |
579 | &c->io[0], &c->io[1]); | |
1a8d4663 | 580 | |
6d9a299f | 581 | if (!(s->state & SOCKET_PRESENT)) { |
eb838fe1 | 582 | dev_dbg(&p_dev->dev, "pcmcia_request_io: No card present\n"); |
94a819f8 | 583 | goto out; |
6d9a299f | 584 | } |
1a8d4663 | 585 | |
6d9a299f | 586 | if (c->state & CONFIG_LOCKED) { |
eb838fe1 | 587 | dev_dbg(&p_dev->dev, "Configuration is locked\n"); |
94a819f8 | 588 | goto out; |
6d9a299f | 589 | } |
f958095e | 590 | if (c->state & CONFIG_IO_REQ) { |
eb838fe1 | 591 | dev_dbg(&p_dev->dev, "IO already configured\n"); |
94a819f8 | 592 | goto out; |
f958095e | 593 | } |
1a8d4663 | 594 | |
90abdc3b | 595 | ret = alloc_io_space(s, &c->io[0], p_dev->io_lines); |
2ce4905e | 596 | if (ret) |
94a819f8 | 597 | goto out; |
1a8d4663 | 598 | |
2ce4905e | 599 | if (c->io[1].end) { |
90abdc3b | 600 | ret = alloc_io_space(s, &c->io[1], p_dev->io_lines); |
94a819f8 | 601 | if (ret) { |
7cdffc86 DB |
602 | struct resource tmp = c->io[0]; |
603 | /* release the previously allocated resource */ | |
2ce4905e | 604 | release_io_space(s, &c->io[0]); |
7cdffc86 DB |
605 | /* but preserve the settings, for they worked... */ |
606 | c->io[0].end = resource_size(&tmp); | |
607 | c->io[0].start = tmp.start; | |
608 | c->io[0].flags = tmp.flags; | |
94a819f8 | 609 | goto out; |
1a8d4663 | 610 | } |
2ce4905e DB |
611 | } else |
612 | c->io[1].start = 0; | |
1a8d4663 | 613 | |
1a8d4663 | 614 | c->state |= CONFIG_IO_REQ; |
e2d40963 | 615 | p_dev->_io = 1; |
94a819f8 | 616 | |
eb838fe1 | 617 | dev_dbg(&p_dev->dev, "pcmcia_request_io succeeded: %pR , %pR", |
2ce4905e | 618 | &c->io[0], &c->io[1]); |
94a819f8 DB |
619 | out: |
620 | mutex_unlock(&s->ops_mutex); | |
621 | ||
622 | return ret; | |
1a8d4663 DB |
623 | } /* pcmcia_request_io */ |
624 | EXPORT_SYMBOL(pcmcia_request_io); | |
625 | ||
626 | ||
eb14120f DB |
627 | /** |
628 | * pcmcia_request_irq() - attempt to request a IRQ for a PCMCIA device | |
1a8d4663 | 629 | * |
eb14120f DB |
630 | * pcmcia_request_irq() is a wrapper around request_irq which will allow |
631 | * the PCMCIA core to clean up the registration in pcmcia_disable_device(). | |
632 | * Drivers are free to use request_irq() directly, but then they need to | |
633 | * call free_irq themselfves, too. Also, only IRQF_SHARED capable IRQ | |
634 | * handlers are allowed. | |
1a8d4663 | 635 | */ |
eb14120f DB |
636 | int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev, |
637 | irq_handler_t handler) | |
1a8d4663 | 638 | { |
eb14120f | 639 | int ret; |
1a8d4663 | 640 | |
eb14120f DB |
641 | if (!p_dev->irq) |
642 | return -EINVAL; | |
94a819f8 | 643 | |
eb14120f DB |
644 | ret = request_irq(p_dev->irq, handler, IRQF_SHARED, |
645 | p_dev->devname, p_dev->priv); | |
646 | if (!ret) | |
647 | p_dev->_irq = 1; | |
1a8d4663 | 648 | |
eb14120f DB |
649 | return ret; |
650 | } | |
651 | EXPORT_SYMBOL(pcmcia_request_irq); | |
6f0f38c4 | 652 | |
1a8d4663 | 653 | |
eb14120f DB |
654 | /** |
655 | * pcmcia_request_exclusive_irq() - attempt to request an exclusive IRQ first | |
656 | * | |
657 | * pcmcia_request_exclusive_irq() is a wrapper around request_irq which | |
658 | * attempts first to request an exclusive IRQ. If it fails, it also accepts | |
659 | * a shared IRQ, but prints out a warning. PCMCIA drivers should allow for | |
660 | * IRQ sharing and either use request_irq directly (then they need to call | |
661 | * free_irq themselves, too), or the pcmcia_request_irq() function. | |
662 | */ | |
663 | int __must_check | |
b19a7275 DB |
664 | __pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev, |
665 | irq_handler_t handler) | |
eb14120f DB |
666 | { |
667 | int ret; | |
1a8d4663 | 668 | |
eb14120f DB |
669 | if (!p_dev->irq) |
670 | return -EINVAL; | |
1a8d4663 | 671 | |
eb14120f DB |
672 | ret = request_irq(p_dev->irq, handler, 0, p_dev->devname, p_dev->priv); |
673 | if (ret) { | |
674 | ret = pcmcia_request_irq(p_dev, handler); | |
675 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " | |
676 | "request for exclusive IRQ could not be fulfilled.\n"); | |
677 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
678 | "needs updating to supported shared IRQ lines.\n"); | |
679 | } | |
680 | if (ret) | |
681 | dev_printk(KERN_INFO, &p_dev->dev, "request_irq() failed\n"); | |
682 | else | |
683 | p_dev->_irq = 1; | |
1a8d4663 | 684 | |
94a819f8 | 685 | return ret; |
eb14120f | 686 | } /* pcmcia_request_exclusive_irq */ |
b19a7275 | 687 | EXPORT_SYMBOL(__pcmcia_request_exclusive_irq); |
1a8d4663 DB |
688 | |
689 | ||
6f0f38c4 DB |
690 | #ifdef CONFIG_PCMCIA_PROBE |
691 | ||
692 | /* mask of IRQs already reserved by other cards, we should avoid using them */ | |
127c03cd | 693 | static u8 pcmcia_used_irq[32]; |
6f0f38c4 DB |
694 | |
695 | static irqreturn_t test_action(int cpl, void *dev_id) | |
696 | { | |
697 | return IRQ_NONE; | |
698 | } | |
699 | ||
700 | /** | |
701 | * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used | |
702 | * @p_dev - the associated PCMCIA device | |
703 | * | |
704 | * locking note: must be called with ops_mutex locked. | |
705 | */ | |
706 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
707 | { | |
708 | struct pcmcia_socket *s = p_dev->socket; | |
709 | unsigned int try, irq; | |
710 | u32 mask = s->irq_mask; | |
711 | int ret = -ENODEV; | |
712 | ||
713 | for (try = 0; try < 64; try++) { | |
714 | irq = try % 32; | |
715 | ||
127c03cd DB |
716 | if (irq > NR_IRQS) |
717 | continue; | |
718 | ||
6f0f38c4 DB |
719 | /* marked as available by driver, not blocked by userspace? */ |
720 | if (!((mask >> irq) & 1)) | |
721 | continue; | |
722 | ||
723 | /* avoid an IRQ which is already used by another PCMCIA card */ | |
724 | if ((try < 32) && pcmcia_used_irq[irq]) | |
725 | continue; | |
726 | ||
727 | /* register the correct driver, if possible, to check whether | |
728 | * registering a dummy handle works, i.e. if the IRQ isn't | |
729 | * marked as used by the kernel resource management core */ | |
730 | ret = request_irq(irq, test_action, type, p_dev->devname, | |
731 | p_dev); | |
732 | if (!ret) { | |
733 | free_irq(irq, p_dev); | |
eb14120f | 734 | p_dev->irq = s->pcmcia_irq = irq; |
6f0f38c4 DB |
735 | pcmcia_used_irq[irq]++; |
736 | break; | |
737 | } | |
738 | } | |
739 | ||
740 | return ret; | |
741 | } | |
742 | ||
743 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
744 | { | |
6f840afb DB |
745 | pcmcia_used_irq[s->pcmcia_irq]--; |
746 | s->pcmcia_irq = 0; | |
6f0f38c4 DB |
747 | } |
748 | ||
749 | #else /* CONFIG_PCMCIA_PROBE */ | |
750 | ||
751 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
752 | { | |
753 | return -EINVAL; | |
754 | } | |
755 | ||
756 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
757 | { | |
6f840afb | 758 | s->pcmcia_irq = 0; |
6f0f38c4 DB |
759 | return; |
760 | } | |
761 | ||
762 | #endif /* CONFIG_PCMCIA_PROBE */ | |
763 | ||
764 | ||
765 | /** | |
766 | * pcmcia_setup_irq() - determine IRQ to be used for device | |
767 | * @p_dev - the associated PCMCIA device | |
768 | * | |
769 | * locking note: must be called with ops_mutex locked. | |
770 | */ | |
771 | int pcmcia_setup_irq(struct pcmcia_device *p_dev) | |
772 | { | |
773 | struct pcmcia_socket *s = p_dev->socket; | |
774 | ||
eb14120f | 775 | if (p_dev->irq) |
6f0f38c4 DB |
776 | return 0; |
777 | ||
778 | /* already assigned? */ | |
6f840afb | 779 | if (s->pcmcia_irq) { |
eb14120f | 780 | p_dev->irq = s->pcmcia_irq; |
6f0f38c4 DB |
781 | return 0; |
782 | } | |
783 | ||
784 | /* prefer an exclusive ISA irq */ | |
785 | if (!pcmcia_setup_isa_irq(p_dev, 0)) | |
786 | return 0; | |
787 | ||
788 | /* but accept a shared ISA irq */ | |
789 | if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED)) | |
790 | return 0; | |
791 | ||
792 | /* but use the PCI irq otherwise */ | |
793 | if (s->pci_irq) { | |
eb14120f | 794 | p_dev->irq = s->pcmcia_irq = s->pci_irq; |
6f0f38c4 DB |
795 | return 0; |
796 | } | |
797 | ||
798 | return -EINVAL; | |
799 | } | |
800 | ||
801 | ||
cdb13808 DB |
802 | /** |
803 | * pcmcia_request_window() - attempt to reserve iomem for PCMCIA devices | |
1a8d4663 | 804 | * |
cdb13808 DB |
805 | * pcmcia_request_window() attepts to reserve an iomem ranges specified in |
806 | * struct resource *res pointing to one of the entries in | |
807 | * struct pcmcia_device *p_dev->resource[2..5]. The "start" value is the | |
808 | * requested start of the IO mem resource; "end" reflects the size | |
809 | * requested. | |
1a8d4663 | 810 | */ |
cdb13808 DB |
811 | int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res, |
812 | unsigned int speed) | |
1a8d4663 | 813 | { |
6838b03f | 814 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 815 | pccard_mem_map *win; |
1a8d4663 DB |
816 | u_long align; |
817 | int w; | |
818 | ||
6d9a299f | 819 | if (!(s->state & SOCKET_PRESENT)) { |
eb838fe1 | 820 | dev_dbg(&p_dev->dev, "No card present\n"); |
3939c1ef | 821 | return -ENODEV; |
6d9a299f | 822 | } |
1a8d4663 DB |
823 | |
824 | /* Window size defaults to smallest available */ | |
cdb13808 DB |
825 | if (res->end == 0) |
826 | res->end = s->map_size; | |
827 | align = (s->features & SS_CAP_MEM_ALIGN) ? res->end : s->map_size; | |
828 | if (res->end & (s->map_size-1)) { | |
eb838fe1 | 829 | dev_dbg(&p_dev->dev, "invalid map size\n"); |
69ba4433 DB |
830 | return -EINVAL; |
831 | } | |
cdb13808 DB |
832 | if ((res->start && (s->features & SS_CAP_STATIC_MAP)) || |
833 | (res->start & (align-1))) { | |
eb838fe1 | 834 | dev_dbg(&p_dev->dev, "invalid base address\n"); |
69ba4433 DB |
835 | return -EINVAL; |
836 | } | |
cdb13808 | 837 | if (res->start) |
1a8d4663 DB |
838 | align = 0; |
839 | ||
840 | /* Allocate system memory window */ | |
0ca724d3 | 841 | mutex_lock(&s->ops_mutex); |
1a8d4663 | 842 | for (w = 0; w < MAX_WIN; w++) |
9fea84f4 DB |
843 | if (!(s->state & SOCKET_WIN_REQ(w))) |
844 | break; | |
f958095e | 845 | if (w == MAX_WIN) { |
eb838fe1 | 846 | dev_dbg(&p_dev->dev, "all windows are used already\n"); |
0ca724d3 | 847 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
848 | return -EINVAL; |
849 | } | |
1a8d4663 DB |
850 | |
851 | win = &s->win[w]; | |
1a8d4663 DB |
852 | |
853 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
cdb13808 | 854 | win->res = pcmcia_find_mem_region(res->start, res->end, align, |
0ca724d3 | 855 | 0, s); |
82f88e36 | 856 | if (!win->res) { |
eb838fe1 | 857 | dev_dbg(&p_dev->dev, "allocating mem region failed\n"); |
6b8e087b | 858 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
859 | return -EINVAL; |
860 | } | |
1a8d4663 | 861 | } |
6838b03f | 862 | p_dev->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
863 | |
864 | /* Configure the socket controller */ | |
82f88e36 | 865 | win->map = w+1; |
cdb13808 DB |
866 | win->flags = res->flags & WIN_FLAGS_MAP; |
867 | win->speed = speed; | |
82f88e36 | 868 | win->card_start = 0; |
6b8e087b | 869 | |
82f88e36 | 870 | if (s->ops->set_mem_map(s, win) != 0) { |
eb838fe1 | 871 | dev_dbg(&p_dev->dev, "failed to set memory mapping\n"); |
6b8e087b | 872 | mutex_unlock(&s->ops_mutex); |
926c5402 DB |
873 | return -EIO; |
874 | } | |
1a8d4663 DB |
875 | s->state |= SOCKET_WIN_REQ(w); |
876 | ||
877 | /* Return window handle */ | |
9fea84f4 | 878 | if (s->features & SS_CAP_STATIC_MAP) |
cdb13808 | 879 | res->start = win->static_start; |
9fea84f4 | 880 | else |
cdb13808 | 881 | res->start = win->res->start; |
9fea84f4 | 882 | |
0ca724d3 | 883 | /* convert to new-style resources */ |
cdb13808 DB |
884 | res->end += res->start - 1; |
885 | res->flags &= ~WIN_FLAGS_REQ; | |
886 | res->flags |= (win->map << 2) | IORESOURCE_MEM; | |
ad0c7be2 DB |
887 | res->parent = win->res; |
888 | if (win->res) | |
889 | request_resource(&iomem_resource, res); | |
890 | ||
eb838fe1 | 891 | dev_dbg(&p_dev->dev, "request_window results in %pR\n", res); |
0ca724d3 | 892 | |
6b8e087b | 893 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 894 | |
4c89e88b | 895 | return 0; |
1a8d4663 DB |
896 | } /* pcmcia_request_window */ |
897 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc | 898 | |
9fea84f4 DB |
899 | void pcmcia_disable_device(struct pcmcia_device *p_dev) |
900 | { | |
0ca724d3 DB |
901 | int i; |
902 | for (i = 0; i < MAX_WIN; i++) { | |
903 | struct resource *res = p_dev->resource[MAX_IO_WIN + i]; | |
904 | if (res->flags & WIN_FLAGS_REQ) | |
905 | pcmcia_release_window(p_dev, res); | |
906 | } | |
907 | ||
5f2a71fc | 908 | pcmcia_release_configuration(p_dev); |
2ce4905e | 909 | pcmcia_release_io(p_dev); |
418c5278 | 910 | if (p_dev->_irq) { |
eb14120f | 911 | free_irq(p_dev->irq, p_dev->priv); |
418c5278 PM |
912 | p_dev->_irq = 0; |
913 | } | |
5f2a71fc DB |
914 | } |
915 | EXPORT_SYMBOL(pcmcia_disable_device); |