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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1a8d4663 DB |
2 | /* |
3 | * PCMCIA 16-bit resource management functions | |
4 | * | |
5 | * The initial developer of the original code is David A. Hinds | |
6 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
7 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
8 | * | |
9 | * Copyright (C) 1999 David A. Hinds | |
9485ee14 | 10 | * Copyright (C) 2004-2010 Dominik Brodowski |
1a8d4663 DB |
11 | */ |
12 | ||
1a8d4663 DB |
13 | #include <linux/module.h> |
14 | #include <linux/kernel.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/pci.h> | |
18 | #include <linux/device.h> | |
91284224 | 19 | #include <linux/netdevice.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
1a8d4663 | 21 | |
6f0f38c4 DB |
22 | #include <asm/irq.h> |
23 | ||
1a8d4663 | 24 | #include <pcmcia/ss.h> |
1a8d4663 DB |
25 | #include <pcmcia/cistpl.h> |
26 | #include <pcmcia/cisreg.h> | |
27 | #include <pcmcia/ds.h> | |
28 | ||
29 | #include "cs_internal.h" | |
1a8d4663 DB |
30 | |
31 | ||
1a8d4663 | 32 | /* Access speed for IO windows */ |
9fea84f4 | 33 | static int io_speed; |
1a8d4663 DB |
34 | module_param(io_speed, int, 0444); |
35 | ||
36 | ||
a3ac9af5 DB |
37 | int pcmcia_validate_mem(struct pcmcia_socket *s) |
38 | { | |
39 | if (s->resource_ops->validate_mem) | |
40 | return s->resource_ops->validate_mem(s); | |
41 | /* if there is no callback, we can assume that everything is OK */ | |
42 | return 0; | |
43 | } | |
44 | ||
45 | struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, | |
46 | int low, struct pcmcia_socket *s) | |
47 | { | |
48 | if (s->resource_ops->find_mem) | |
49 | return s->resource_ops->find_mem(base, num, align, low, s); | |
50 | return NULL; | |
51 | } | |
52 | ||
1a8d4663 | 53 | |
9485ee14 DB |
54 | /** |
55 | * release_io_space() - release IO ports allocated with alloc_io_space() | |
56 | * @s: pcmcia socket | |
57 | * @res: resource to release | |
58 | * | |
59 | */ | |
ad0c7be2 DB |
60 | static void release_io_space(struct pcmcia_socket *s, struct resource *res) |
61 | { | |
62 | resource_size_t num = resource_size(res); | |
63 | int i; | |
64 | ||
65 | dev_dbg(&s->dev, "release_io_space for %pR\n", res); | |
66 | ||
67 | for (i = 0; i < MAX_IO_WIN; i++) { | |
68 | if (!s->io[i].res) | |
69 | continue; | |
70 | if ((s->io[i].res->start <= res->start) && | |
71 | (s->io[i].res->end >= res->end)) { | |
72 | s->io[i].InUse -= num; | |
73 | if (res->parent) | |
74 | release_resource(res); | |
75 | res->start = res->end = 0; | |
76 | res->flags = IORESOURCE_IO; | |
77 | /* Free the window if no one else is using it */ | |
78 | if (s->io[i].InUse == 0) { | |
79 | release_resource(s->io[i].res); | |
80 | kfree(s->io[i].res); | |
81 | s->io[i].res = NULL; | |
82 | } | |
83 | } | |
84 | } | |
9485ee14 DB |
85 | } |
86 | ||
ad0c7be2 | 87 | |
9485ee14 DB |
88 | /** |
89 | * alloc_io_space() - allocate IO ports for use by a PCMCIA device | |
90 | * @s: pcmcia socket | |
91 | * @res: resource to allocate (begin: begin, end: size) | |
92 | * @lines: number of IO lines decoded by the PCMCIA card | |
1a8d4663 DB |
93 | * |
94 | * Special stuff for managing IO windows, because they are scarce | |
95 | */ | |
2ce4905e DB |
96 | static int alloc_io_space(struct pcmcia_socket *s, struct resource *res, |
97 | unsigned int lines) | |
1a8d4663 | 98 | { |
b19a7275 | 99 | unsigned int align; |
2ce4905e DB |
100 | unsigned int base = res->start; |
101 | unsigned int num = res->end; | |
102 | int ret; | |
103 | ||
104 | res->flags |= IORESOURCE_IO; | |
1a8d4663 | 105 | |
90abdc3b DB |
106 | dev_dbg(&s->dev, "alloc_io_space request for %pR, %d lines\n", |
107 | res, lines); | |
2ce4905e DB |
108 | |
109 | align = base ? (lines ? 1<<lines : 0) : 1; | |
1a8d4663 | 110 | if (align && (align < num)) { |
2ce4905e DB |
111 | if (base) { |
112 | dev_dbg(&s->dev, "odd IO request\n"); | |
1a8d4663 DB |
113 | align = 0; |
114 | } else | |
9fea84f4 DB |
115 | while (align && (align < num)) |
116 | align <<= 1; | |
1a8d4663 | 117 | } |
2ce4905e DB |
118 | if (base & ~(align-1)) { |
119 | dev_dbg(&s->dev, "odd IO request\n"); | |
1a8d4663 DB |
120 | align = 0; |
121 | } | |
b19a7275 | 122 | |
ad0c7be2 DB |
123 | ret = s->resource_ops->find_io(s, res->flags, &base, num, align, |
124 | &res->parent); | |
2ce4905e | 125 | if (ret) { |
ad0c7be2 | 126 | dev_dbg(&s->dev, "alloc_io_space request failed (%d)\n", ret); |
2ce4905e DB |
127 | return -EINVAL; |
128 | } | |
129 | ||
130 | res->start = base; | |
131 | res->end = res->start + num - 1; | |
1a8d4663 | 132 | |
ad0c7be2 DB |
133 | if (res->parent) { |
134 | ret = request_resource(res->parent, res); | |
135 | if (ret) { | |
136 | dev_warn(&s->dev, | |
137 | "request_resource %pR failed: %d\n", res, ret); | |
138 | res->parent = NULL; | |
139 | release_io_space(s, res); | |
1a8d4663 DB |
140 | } |
141 | } | |
ad0c7be2 DB |
142 | dev_dbg(&s->dev, "alloc_io_space request result %d: %pR\n", ret, res); |
143 | return ret; | |
9485ee14 | 144 | } |
1a8d4663 DB |
145 | |
146 | ||
1d5cc192 DB |
147 | /** |
148 | * pcmcia_access_config() - read or write card configuration registers | |
1a8d4663 | 149 | * |
1d5cc192 DB |
150 | * pcmcia_access_config() reads and writes configuration registers in |
151 | * attribute memory. Memory window 0 is reserved for this and the tuple | |
152 | * reading services. Drivers must use pcmcia_read_config_byte() or | |
153 | * pcmcia_write_config_byte(). | |
1a8d4663 | 154 | */ |
1d5cc192 DB |
155 | static int pcmcia_access_config(struct pcmcia_device *p_dev, |
156 | off_t where, u8 *val, | |
157 | int (*accessf) (struct pcmcia_socket *s, | |
158 | int attr, unsigned int addr, | |
159 | unsigned int len, void *ptr)) | |
1a8d4663 | 160 | { |
855cdf13 | 161 | struct pcmcia_socket *s; |
1a8d4663 DB |
162 | config_t *c; |
163 | int addr; | |
059f667d | 164 | int ret = 0; |
1a8d4663 | 165 | |
855cdf13 | 166 | s = p_dev->socket; |
94a819f8 DB |
167 | |
168 | mutex_lock(&s->ops_mutex); | |
855cdf13 | 169 | c = p_dev->function_config; |
1a8d4663 | 170 | |
6d9a299f | 171 | if (!(c->state & CONFIG_LOCKED)) { |
e9c54999 | 172 | dev_dbg(&p_dev->dev, "Configuration isn't locked\n"); |
94a819f8 | 173 | mutex_unlock(&s->ops_mutex); |
943f70f1 | 174 | return -EACCES; |
6d9a299f | 175 | } |
1a8d4663 | 176 | |
7feabb64 | 177 | addr = (p_dev->config_base + where) >> 1; |
1d5cc192 DB |
178 | |
179 | ret = accessf(s, 1, addr, 1, val); | |
180 | ||
059f667d | 181 | mutex_unlock(&s->ops_mutex); |
1d5cc192 | 182 | |
059f667d | 183 | return ret; |
9485ee14 | 184 | } |
1d5cc192 DB |
185 | |
186 | ||
187 | /** | |
188 | * pcmcia_read_config_byte() - read a byte from a card configuration register | |
189 | * | |
190 | * pcmcia_read_config_byte() reads a byte from a configuration register in | |
191 | * attribute memory. | |
192 | */ | |
193 | int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val) | |
194 | { | |
195 | return pcmcia_access_config(p_dev, where, val, pcmcia_read_cis_mem); | |
196 | } | |
197 | EXPORT_SYMBOL(pcmcia_read_config_byte); | |
198 | ||
199 | ||
200 | /** | |
201 | * pcmcia_write_config_byte() - write a byte to a card configuration register | |
202 | * | |
203 | * pcmcia_write_config_byte() writes a byte to a configuration register in | |
204 | * attribute memory. | |
205 | */ | |
206 | int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val) | |
207 | { | |
208 | return pcmcia_access_config(p_dev, where, &val, pcmcia_write_cis_mem); | |
209 | } | |
210 | EXPORT_SYMBOL(pcmcia_write_config_byte); | |
3448139b | 211 | |
1a8d4663 | 212 | |
9485ee14 DB |
213 | /** |
214 | * pcmcia_map_mem_page() - modify iomem window to point to a different offset | |
215 | * @p_dev: pcmcia device | |
216 | * @res: iomem resource already enabled by pcmcia_request_window() | |
217 | * @offset: card_offset to map | |
218 | * | |
219 | * pcmcia_map_mem_page() modifies what can be read and written by accessing | |
220 | * an iomem range previously enabled by pcmcia_request_window(), by setting | |
221 | * the card_offset value to @offset. | |
222 | */ | |
cdb13808 | 223 | int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res, |
b5cb259e | 224 | unsigned int offset) |
1a8d4663 | 225 | { |
0bdf9b3d | 226 | struct pcmcia_socket *s = p_dev->socket; |
0ca724d3 | 227 | unsigned int w; |
6b8e087b | 228 | int ret; |
868575d1 | 229 | |
0ca724d3 DB |
230 | w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1; |
231 | if (w >= MAX_WIN) | |
ffb8da20 | 232 | return -EINVAL; |
b5cb259e | 233 | |
6b8e087b | 234 | mutex_lock(&s->ops_mutex); |
0ca724d3 DB |
235 | s->win[w].card_start = offset; |
236 | ret = s->ops->set_mem_map(s, &s->win[w]); | |
6b8e087b | 237 | if (ret) |
eb838fe1 | 238 | dev_warn(&p_dev->dev, "failed to set_mem_map\n"); |
6b8e087b DB |
239 | mutex_unlock(&s->ops_mutex); |
240 | return ret; | |
9485ee14 | 241 | } |
1a8d4663 DB |
242 | EXPORT_SYMBOL(pcmcia_map_mem_page); |
243 | ||
244 | ||
fb49fa53 DB |
245 | /** |
246 | * pcmcia_fixup_iowidth() - reduce io width to 8bit | |
9485ee14 | 247 | * @p_dev: pcmcia device |
1a8d4663 | 248 | * |
fb49fa53 | 249 | * pcmcia_fixup_iowidth() allows a PCMCIA device driver to reduce the |
1ac71e5a | 250 | * IO width to 8bit after having called pcmcia_enable_device() |
fb49fa53 | 251 | * previously. |
1a8d4663 | 252 | */ |
fb49fa53 | 253 | int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev) |
1a8d4663 | 254 | { |
fb49fa53 DB |
255 | struct pcmcia_socket *s = p_dev->socket; |
256 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
257 | pccard_io_map io_on; | |
258 | int i, ret = 0; | |
94a819f8 DB |
259 | |
260 | mutex_lock(&s->ops_mutex); | |
dbb22f0d | 261 | |
fb49fa53 DB |
262 | dev_dbg(&p_dev->dev, "fixup iowidth to 8bit\n"); |
263 | ||
264 | if (!(s->state & SOCKET_PRESENT) || | |
265 | !(p_dev->function_config->state & CONFIG_LOCKED)) { | |
266 | dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); | |
4e06e240 JS |
267 | ret = -EACCES; |
268 | goto unlock; | |
6d9a299f | 269 | } |
1a8d4663 | 270 | |
fb49fa53 DB |
271 | io_on.speed = io_speed; |
272 | for (i = 0; i < MAX_IO_WIN; i++) { | |
273 | if (!s->io[i].res) | |
274 | continue; | |
275 | io_off.map = i; | |
276 | io_on.map = i; | |
277 | ||
278 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
279 | io_on.start = s->io[i].res->start; | |
280 | io_on.stop = s->io[i].res->end; | |
281 | ||
282 | s->ops->set_io_map(s, &io_off); | |
1b22dcf6 | 283 | msleep(40); |
fb49fa53 | 284 | s->ops->set_io_map(s, &io_on); |
d8b0a49d | 285 | } |
fb49fa53 DB |
286 | unlock: |
287 | mutex_unlock(&s->ops_mutex); | |
1a8d4663 | 288 | |
fb49fa53 DB |
289 | return ret; |
290 | } | |
291 | EXPORT_SYMBOL(pcmcia_fixup_iowidth); | |
292 | ||
293 | ||
294 | /** | |
295 | * pcmcia_fixup_vpp() - set Vpp to a new voltage level | |
9485ee14 DB |
296 | * @p_dev: pcmcia device |
297 | * @new_vpp: new Vpp voltage | |
fb49fa53 DB |
298 | * |
299 | * pcmcia_fixup_vpp() allows a PCMCIA device driver to set Vpp to | |
1ac71e5a | 300 | * a new voltage level between calls to pcmcia_enable_device() |
fb49fa53 DB |
301 | * and pcmcia_disable_device(). |
302 | */ | |
303 | int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp) | |
304 | { | |
305 | struct pcmcia_socket *s = p_dev->socket; | |
306 | int ret = 0; | |
307 | ||
308 | mutex_lock(&s->ops_mutex); | |
309 | ||
310 | dev_dbg(&p_dev->dev, "fixup Vpp to %d\n", new_vpp); | |
311 | ||
312 | if (!(s->state & SOCKET_PRESENT) || | |
313 | !(p_dev->function_config->state & CONFIG_LOCKED)) { | |
314 | dev_dbg(&p_dev->dev, "No card? Config not locked?\n"); | |
315 | ret = -EACCES; | |
4e06e240 | 316 | goto unlock; |
d8b0a49d | 317 | } |
1a8d4663 | 318 | |
fb49fa53 DB |
319 | s->socket.Vpp = new_vpp; |
320 | if (s->ops->set_socket(s, &s->socket)) { | |
321 | dev_warn(&p_dev->dev, "Unable to set VPP\n"); | |
322 | ret = -EIO; | |
323 | goto unlock; | |
4bbed523 | 324 | } |
e8405f0f | 325 | p_dev->vpp = new_vpp; |
fb49fa53 | 326 | |
4e06e240 | 327 | unlock: |
94a819f8 | 328 | mutex_unlock(&s->ops_mutex); |
4bbed523 | 329 | |
4e06e240 | 330 | return ret; |
fb49fa53 DB |
331 | } |
332 | EXPORT_SYMBOL(pcmcia_fixup_vpp); | |
1a8d4663 DB |
333 | |
334 | ||
9485ee14 DB |
335 | /** |
336 | * pcmcia_release_configuration() - physically disable a PCMCIA device | |
337 | * @p_dev: pcmcia device | |
338 | * | |
339 | * pcmcia_release_configuration() is the 1:1 counterpart to | |
340 | * pcmcia_enable_device(): If a PCMCIA device is no longer used by any | |
341 | * driver, the Vpp voltage is set to 0, IRQs will no longer be generated, | |
342 | * and I/O ranges will be disabled. As pcmcia_release_io() and | |
343 | * pcmcia_release_window() still need to be called, device drivers are | |
344 | * expected to call pcmcia_disable_device() instead. | |
345 | */ | |
2bc5a9bd | 346 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
347 | { |
348 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 349 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 | 350 | config_t *c; |
1a8d4663 DB |
351 | int i; |
352 | ||
9e86749c | 353 | mutex_lock(&s->ops_mutex); |
94a819f8 | 354 | c = p_dev->function_config; |
e2d40963 DB |
355 | if (p_dev->_locked) { |
356 | p_dev->_locked = 0; | |
1a8d4663 | 357 | if (--(s->lock_count) == 0) { |
9485ee14 | 358 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ |
1a8d4663 DB |
359 | s->socket.Vpp = 0; |
360 | s->socket.io_irq = 0; | |
361 | s->ops->set_socket(s, &s->socket); | |
362 | } | |
5f2a71fc DB |
363 | } |
364 | if (c->state & CONFIG_LOCKED) { | |
365 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
366 | if (c->state & CONFIG_IO_REQ) |
367 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 368 | if (!s->io[i].res) |
1a8d4663 DB |
369 | continue; |
370 | s->io[i].Config--; | |
371 | if (s->io[i].Config != 0) | |
372 | continue; | |
373 | io.map = i; | |
374 | s->ops->set_io_map(s, &io); | |
375 | } | |
1a8d4663 | 376 | } |
9e86749c | 377 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 378 | |
4c89e88b | 379 | return 0; |
9485ee14 | 380 | } |
1a8d4663 DB |
381 | |
382 | ||
9485ee14 DB |
383 | /** |
384 | * pcmcia_release_io() - release I/O allocated by a PCMCIA device | |
385 | * @p_dev: pcmcia device | |
1a8d4663 | 386 | * |
9485ee14 DB |
387 | * pcmcia_release_io() releases the I/O ranges allocated by a PCMCIA |
388 | * device. This may be invoked some time after a card ejection has | |
389 | * already dumped the actual socket configuration, so if the client is | |
390 | * "stale", we don't bother checking the port ranges against the | |
391 | * current socket values. | |
1a8d4663 | 392 | */ |
2ce4905e | 393 | static int pcmcia_release_io(struct pcmcia_device *p_dev) |
1a8d4663 | 394 | { |
2bc5a9bd | 395 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 DB |
396 | int ret = -EINVAL; |
397 | config_t *c; | |
398 | ||
399 | mutex_lock(&s->ops_mutex); | |
9fea84f4 | 400 | if (!p_dev->_io) |
94a819f8 | 401 | goto out; |
5f2a71fc | 402 | |
2ce4905e | 403 | c = p_dev->function_config; |
1a8d4663 | 404 | |
2ce4905e | 405 | release_io_space(s, &c->io[0]); |
5f2a71fc | 406 | |
2ce4905e DB |
407 | if (c->io[1].end) |
408 | release_io_space(s, &c->io[1]); | |
1a8d4663 | 409 | |
2ce4905e DB |
410 | p_dev->_io = 0; |
411 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 | 412 | |
94a819f8 DB |
413 | out: |
414 | mutex_unlock(&s->ops_mutex); | |
415 | ||
416 | return ret; | |
1a8d4663 | 417 | } /* pcmcia_release_io */ |
1a8d4663 | 418 | |
9485ee14 | 419 | |
cdb13808 DB |
420 | /** |
421 | * pcmcia_release_window() - release reserved iomem for PCMCIA devices | |
9485ee14 DB |
422 | * @p_dev: pcmcia device |
423 | * @res: iomem resource to release | |
cdb13808 | 424 | * |
9485ee14 | 425 | * pcmcia_release_window() releases &struct resource *res which was |
cdb13808 DB |
426 | * previously reserved by calling pcmcia_request_window(). |
427 | */ | |
0ca724d3 | 428 | int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res) |
1a8d4663 | 429 | { |
0bdf9b3d | 430 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 431 | pccard_mem_map *win; |
0ca724d3 | 432 | unsigned int w; |
1a8d4663 | 433 | |
0ca724d3 DB |
434 | dev_dbg(&p_dev->dev, "releasing window %pR\n", res); |
435 | ||
436 | w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1; | |
437 | if (w >= MAX_WIN) | |
ffb8da20 | 438 | return -EINVAL; |
0bdf9b3d | 439 | |
6b8e087b | 440 | mutex_lock(&s->ops_mutex); |
0ca724d3 | 441 | win = &s->win[w]; |
0bdf9b3d | 442 | |
0ca724d3 | 443 | if (!(p_dev->_win & CLIENT_WIN_REQ(w))) { |
eb838fe1 | 444 | dev_dbg(&p_dev->dev, "not releasing unknown window\n"); |
6b8e087b | 445 | mutex_unlock(&s->ops_mutex); |
ffb8da20 | 446 | return -EINVAL; |
6d9a299f | 447 | } |
1a8d4663 DB |
448 | |
449 | /* Shut down memory window */ | |
82f88e36 DB |
450 | win->flags &= ~MAP_ACTIVE; |
451 | s->ops->set_mem_map(s, win); | |
0ca724d3 | 452 | s->state &= ~SOCKET_WIN_REQ(w); |
1a8d4663 DB |
453 | |
454 | /* Release system memory */ | |
82f88e36 | 455 | if (win->res) { |
ad0c7be2 | 456 | release_resource(res); |
82f88e36 DB |
457 | release_resource(win->res); |
458 | kfree(win->res); | |
459 | win->res = NULL; | |
1a8d4663 | 460 | } |
cdb13808 DB |
461 | res->start = res->end = 0; |
462 | res->flags = IORESOURCE_MEM; | |
0ca724d3 | 463 | p_dev->_win &= ~CLIENT_WIN_REQ(w); |
6b8e087b | 464 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 465 | |
4c89e88b | 466 | return 0; |
1a8d4663 DB |
467 | } /* pcmcia_release_window */ |
468 | EXPORT_SYMBOL(pcmcia_release_window); | |
469 | ||
9485ee14 | 470 | |
1ac71e5a DB |
471 | /** |
472 | * pcmcia_enable_device() - set up and activate a PCMCIA device | |
9485ee14 | 473 | * @p_dev: the associated PCMCIA device |
1ac71e5a | 474 | * |
9485ee14 DB |
475 | * pcmcia_enable_device() physically enables a PCMCIA device. It parses |
476 | * the flags passed to in @flags and stored in @p_dev->flags and sets up | |
477 | * the Vpp voltage, enables the speaker line, I/O ports and store proper | |
478 | * values to configuration registers. | |
1ac71e5a DB |
479 | */ |
480 | int pcmcia_enable_device(struct pcmcia_device *p_dev) | |
1a8d4663 DB |
481 | { |
482 | int i; | |
1ac71e5a | 483 | unsigned int base; |
2bc5a9bd | 484 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
485 | config_t *c; |
486 | pccard_io_map iomap; | |
fc301101 DB |
487 | unsigned char status = 0; |
488 | unsigned char ext_status = 0; | |
7feabb64 | 489 | unsigned char option = 0; |
1ac71e5a | 490 | unsigned int flags = p_dev->config_flags; |
1a8d4663 | 491 | |
1a8d4663 | 492 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 493 | return -ENODEV; |
1a8d4663 | 494 | |
94a819f8 | 495 | mutex_lock(&s->ops_mutex); |
dbb22f0d | 496 | c = p_dev->function_config; |
6d9a299f | 497 | if (c->state & CONFIG_LOCKED) { |
94a819f8 | 498 | mutex_unlock(&s->ops_mutex); |
eb838fe1 | 499 | dev_dbg(&p_dev->dev, "Configuration is locked\n"); |
943f70f1 | 500 | return -EACCES; |
6d9a299f | 501 | } |
1a8d4663 DB |
502 | |
503 | /* Do power control. We don't allow changes in Vcc. */ | |
e8405f0f | 504 | s->socket.Vpp = p_dev->vpp; |
d8b0a49d | 505 | if (s->ops->set_socket(s, &s->socket)) { |
9e86749c | 506 | mutex_unlock(&s->ops_mutex); |
f2e6cf76 | 507 | dev_warn(&p_dev->dev, "Unable to set socket state\n"); |
d8b0a49d DB |
508 | return -EINVAL; |
509 | } | |
1a8d4663 | 510 | |
1a8d4663 | 511 | /* Pick memory or I/O card, DMA mode, interrupt */ |
ff10fca5 DB |
512 | if (p_dev->_io || flags & CONF_ENABLE_IRQ) |
513 | flags |= CONF_ENABLE_IOCARD; | |
514 | if (flags & CONF_ENABLE_IOCARD) | |
1a8d4663 | 515 | s->socket.flags |= SS_IOCARD; |
33619f0d DB |
516 | if (flags & CONF_ENABLE_ZVCARD) |
517 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
1ac71e5a | 518 | if (flags & CONF_ENABLE_SPKR) { |
1a8d4663 | 519 | s->socket.flags |= SS_SPKR_ENA; |
fc301101 | 520 | status = CCSR_AUDIO_ENA; |
7feabb64 | 521 | if (!(p_dev->config_regs & PRESENT_STATUS)) |
fc301101 DB |
522 | dev_warn(&p_dev->dev, "speaker requested, but " |
523 | "PRESENT_STATUS not set!\n"); | |
524 | } | |
1ac71e5a | 525 | if (flags & CONF_ENABLE_IRQ) |
6f840afb | 526 | s->socket.io_irq = s->pcmcia_irq; |
1a8d4663 DB |
527 | else |
528 | s->socket.io_irq = 0; | |
1ac71e5a | 529 | if (flags & CONF_ENABLE_ESR) { |
7feabb64 | 530 | p_dev->config_regs |= PRESENT_EXT_STATUS; |
fc301101 DB |
531 | ext_status = ESR_REQ_ATTN_ENA; |
532 | } | |
1a8d4663 DB |
533 | s->ops->set_socket(s, &s->socket); |
534 | s->lock_count++; | |
535 | ||
1c4a77bf DB |
536 | dev_dbg(&p_dev->dev, |
537 | "enable_device: V %d, flags %x, base %x, regs %x, idx %x\n", | |
538 | p_dev->vpp, flags, p_dev->config_base, p_dev->config_regs, | |
539 | p_dev->config_index); | |
540 | ||
1a8d4663 | 541 | /* Set up CIS configuration registers */ |
7feabb64 DB |
542 | base = p_dev->config_base; |
543 | if (p_dev->config_regs & PRESENT_COPY) { | |
1a4a0460 DB |
544 | u16 tmp = 0; |
545 | dev_dbg(&p_dev->dev, "clearing CISREG_SCR\n"); | |
546 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &tmp); | |
547 | } | |
7feabb64 | 548 | if (p_dev->config_regs & PRESENT_PIN_REPLACE) { |
1a4a0460 DB |
549 | u16 tmp = 0; |
550 | dev_dbg(&p_dev->dev, "clearing CISREG_PRR\n"); | |
551 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &tmp); | |
1a8d4663 | 552 | } |
7feabb64 | 553 | if (p_dev->config_regs & PRESENT_OPTION) { |
1a8d4663 | 554 | if (s->functions == 1) { |
7feabb64 | 555 | option = p_dev->config_index & COR_CONFIG_MASK; |
1a8d4663 | 556 | } else { |
7feabb64 DB |
557 | option = p_dev->config_index & COR_MFC_CONFIG_MASK; |
558 | option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
559 | if (p_dev->config_regs & PRESENT_IOBASE_0) | |
560 | option |= COR_ADDR_DECODE; | |
1a8d4663 | 561 | } |
1ac71e5a DB |
562 | if ((flags & CONF_ENABLE_IRQ) && |
563 | !(flags & CONF_ENABLE_PULSE_IRQ)) | |
7feabb64 DB |
564 | option |= COR_LEVEL_REQ; |
565 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &option); | |
1b22dcf6 | 566 | msleep(40); |
1a8d4663 | 567 | } |
7feabb64 | 568 | if (p_dev->config_regs & PRESENT_STATUS) |
fc301101 DB |
569 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &status); |
570 | ||
7feabb64 | 571 | if (p_dev->config_regs & PRESENT_EXT_STATUS) |
fc301101 DB |
572 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, |
573 | &ext_status); | |
574 | ||
7feabb64 | 575 | if (p_dev->config_regs & PRESENT_IOBASE_0) { |
2ce4905e | 576 | u8 b = c->io[0].start & 0xff; |
1a8d4663 | 577 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); |
2ce4905e | 578 | b = (c->io[0].start >> 8) & 0xff; |
1a8d4663 DB |
579 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); |
580 | } | |
7feabb64 | 581 | if (p_dev->config_regs & PRESENT_IOSIZE) { |
2ce4905e | 582 | u8 b = resource_size(&c->io[0]) + resource_size(&c->io[1]) - 1; |
1a8d4663 DB |
583 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); |
584 | } | |
585 | ||
586 | /* Configure I/O windows */ | |
587 | if (c->state & CONFIG_IO_REQ) { | |
588 | iomap.speed = io_speed; | |
589 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 590 | if (s->io[i].res) { |
1a8d4663 DB |
591 | iomap.map = i; |
592 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 593 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
594 | case IO_DATA_PATH_WIDTH_16: |
595 | iomap.flags |= MAP_16BIT; break; | |
596 | case IO_DATA_PATH_WIDTH_AUTO: | |
597 | iomap.flags |= MAP_AUTOSZ; break; | |
598 | default: | |
599 | break; | |
600 | } | |
c7d00693 DB |
601 | iomap.start = s->io[i].res->start; |
602 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
603 | s->ops->set_io_map(s, &iomap); |
604 | s->io[i].Config++; | |
605 | } | |
606 | } | |
607 | ||
608 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 609 | p_dev->_locked = 1; |
059f667d | 610 | mutex_unlock(&s->ops_mutex); |
4c89e88b | 611 | return 0; |
1ac71e5a DB |
612 | } /* pcmcia_enable_device */ |
613 | EXPORT_SYMBOL(pcmcia_enable_device); | |
1a8d4663 DB |
614 | |
615 | ||
2ce4905e DB |
616 | /** |
617 | * pcmcia_request_io() - attempt to reserve port ranges for PCMCIA devices | |
9485ee14 | 618 | * @p_dev: the associated PCMCIA device |
2ce4905e | 619 | * |
9485ee14 | 620 | * pcmcia_request_io() attempts to reserve the IO port ranges specified in |
90abdc3b | 621 | * &struct pcmcia_device @p_dev->resource[0] and @p_dev->resource[1]. The |
2ce4905e | 622 | * "start" value is the requested start of the IO port resource; "end" |
90abdc3b DB |
623 | * reflects the number of ports requested. The number of IO lines requested |
624 | * is specified in &struct pcmcia_device @p_dev->io_lines. | |
1a8d4663 | 625 | */ |
90abdc3b | 626 | int pcmcia_request_io(struct pcmcia_device *p_dev) |
1a8d4663 | 627 | { |
2bc5a9bd | 628 | struct pcmcia_socket *s = p_dev->socket; |
90abdc3b | 629 | config_t *c = p_dev->function_config; |
94a819f8 DB |
630 | int ret = -EINVAL; |
631 | ||
632 | mutex_lock(&s->ops_mutex); | |
eb838fe1 DB |
633 | dev_dbg(&p_dev->dev, "pcmcia_request_io: %pR , %pR", |
634 | &c->io[0], &c->io[1]); | |
1a8d4663 | 635 | |
6d9a299f | 636 | if (!(s->state & SOCKET_PRESENT)) { |
eb838fe1 | 637 | dev_dbg(&p_dev->dev, "pcmcia_request_io: No card present\n"); |
94a819f8 | 638 | goto out; |
6d9a299f | 639 | } |
1a8d4663 | 640 | |
6d9a299f | 641 | if (c->state & CONFIG_LOCKED) { |
eb838fe1 | 642 | dev_dbg(&p_dev->dev, "Configuration is locked\n"); |
94a819f8 | 643 | goto out; |
6d9a299f | 644 | } |
f958095e | 645 | if (c->state & CONFIG_IO_REQ) { |
eb838fe1 | 646 | dev_dbg(&p_dev->dev, "IO already configured\n"); |
94a819f8 | 647 | goto out; |
f958095e | 648 | } |
1a8d4663 | 649 | |
90abdc3b | 650 | ret = alloc_io_space(s, &c->io[0], p_dev->io_lines); |
2ce4905e | 651 | if (ret) |
94a819f8 | 652 | goto out; |
1a8d4663 | 653 | |
2ce4905e | 654 | if (c->io[1].end) { |
90abdc3b | 655 | ret = alloc_io_space(s, &c->io[1], p_dev->io_lines); |
94a819f8 | 656 | if (ret) { |
7cdffc86 DB |
657 | struct resource tmp = c->io[0]; |
658 | /* release the previously allocated resource */ | |
2ce4905e | 659 | release_io_space(s, &c->io[0]); |
7cdffc86 DB |
660 | /* but preserve the settings, for they worked... */ |
661 | c->io[0].end = resource_size(&tmp); | |
662 | c->io[0].start = tmp.start; | |
663 | c->io[0].flags = tmp.flags; | |
94a819f8 | 664 | goto out; |
1a8d4663 | 665 | } |
2ce4905e DB |
666 | } else |
667 | c->io[1].start = 0; | |
1a8d4663 | 668 | |
1a8d4663 | 669 | c->state |= CONFIG_IO_REQ; |
e2d40963 | 670 | p_dev->_io = 1; |
94a819f8 | 671 | |
eb838fe1 | 672 | dev_dbg(&p_dev->dev, "pcmcia_request_io succeeded: %pR , %pR", |
2ce4905e | 673 | &c->io[0], &c->io[1]); |
94a819f8 DB |
674 | out: |
675 | mutex_unlock(&s->ops_mutex); | |
676 | ||
677 | return ret; | |
1a8d4663 DB |
678 | } /* pcmcia_request_io */ |
679 | EXPORT_SYMBOL(pcmcia_request_io); | |
680 | ||
681 | ||
eb14120f DB |
682 | /** |
683 | * pcmcia_request_irq() - attempt to request a IRQ for a PCMCIA device | |
9485ee14 DB |
684 | * @p_dev: the associated PCMCIA device |
685 | * @handler: IRQ handler to register | |
1a8d4663 | 686 | * |
9485ee14 | 687 | * pcmcia_request_irq() is a wrapper around request_irq() which allows |
eb14120f DB |
688 | * the PCMCIA core to clean up the registration in pcmcia_disable_device(). |
689 | * Drivers are free to use request_irq() directly, but then they need to | |
9485ee14 | 690 | * call free_irq() themselfves, too. Also, only %IRQF_SHARED capable IRQ |
eb14120f | 691 | * handlers are allowed. |
1a8d4663 | 692 | */ |
eb14120f DB |
693 | int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev, |
694 | irq_handler_t handler) | |
1a8d4663 | 695 | { |
eb14120f | 696 | int ret; |
1a8d4663 | 697 | |
eb14120f DB |
698 | if (!p_dev->irq) |
699 | return -EINVAL; | |
94a819f8 | 700 | |
eb14120f DB |
701 | ret = request_irq(p_dev->irq, handler, IRQF_SHARED, |
702 | p_dev->devname, p_dev->priv); | |
703 | if (!ret) | |
704 | p_dev->_irq = 1; | |
1a8d4663 | 705 | |
eb14120f DB |
706 | return ret; |
707 | } | |
708 | EXPORT_SYMBOL(pcmcia_request_irq); | |
1a8d4663 DB |
709 | |
710 | ||
6f0f38c4 DB |
711 | #ifdef CONFIG_PCMCIA_PROBE |
712 | ||
713 | /* mask of IRQs already reserved by other cards, we should avoid using them */ | |
127c03cd | 714 | static u8 pcmcia_used_irq[32]; |
6f0f38c4 DB |
715 | |
716 | static irqreturn_t test_action(int cpl, void *dev_id) | |
717 | { | |
718 | return IRQ_NONE; | |
719 | } | |
720 | ||
721 | /** | |
722 | * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used | |
723 | * @p_dev - the associated PCMCIA device | |
724 | * | |
725 | * locking note: must be called with ops_mutex locked. | |
726 | */ | |
727 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
728 | { | |
729 | struct pcmcia_socket *s = p_dev->socket; | |
730 | unsigned int try, irq; | |
731 | u32 mask = s->irq_mask; | |
732 | int ret = -ENODEV; | |
733 | ||
734 | for (try = 0; try < 64; try++) { | |
735 | irq = try % 32; | |
736 | ||
127c03cd DB |
737 | if (irq > NR_IRQS) |
738 | continue; | |
739 | ||
6f0f38c4 DB |
740 | /* marked as available by driver, not blocked by userspace? */ |
741 | if (!((mask >> irq) & 1)) | |
742 | continue; | |
743 | ||
744 | /* avoid an IRQ which is already used by another PCMCIA card */ | |
745 | if ((try < 32) && pcmcia_used_irq[irq]) | |
746 | continue; | |
747 | ||
748 | /* register the correct driver, if possible, to check whether | |
749 | * registering a dummy handle works, i.e. if the IRQ isn't | |
750 | * marked as used by the kernel resource management core */ | |
751 | ret = request_irq(irq, test_action, type, p_dev->devname, | |
752 | p_dev); | |
753 | if (!ret) { | |
754 | free_irq(irq, p_dev); | |
eb14120f | 755 | p_dev->irq = s->pcmcia_irq = irq; |
6f0f38c4 DB |
756 | pcmcia_used_irq[irq]++; |
757 | break; | |
758 | } | |
759 | } | |
760 | ||
761 | return ret; | |
762 | } | |
763 | ||
764 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
765 | { | |
6f840afb DB |
766 | pcmcia_used_irq[s->pcmcia_irq]--; |
767 | s->pcmcia_irq = 0; | |
6f0f38c4 DB |
768 | } |
769 | ||
770 | #else /* CONFIG_PCMCIA_PROBE */ | |
771 | ||
772 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
773 | { | |
774 | return -EINVAL; | |
775 | } | |
776 | ||
777 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
778 | { | |
6f840afb | 779 | s->pcmcia_irq = 0; |
6f0f38c4 DB |
780 | return; |
781 | } | |
782 | ||
783 | #endif /* CONFIG_PCMCIA_PROBE */ | |
784 | ||
785 | ||
786 | /** | |
787 | * pcmcia_setup_irq() - determine IRQ to be used for device | |
788 | * @p_dev - the associated PCMCIA device | |
789 | * | |
790 | * locking note: must be called with ops_mutex locked. | |
791 | */ | |
792 | int pcmcia_setup_irq(struct pcmcia_device *p_dev) | |
793 | { | |
794 | struct pcmcia_socket *s = p_dev->socket; | |
795 | ||
eb14120f | 796 | if (p_dev->irq) |
6f0f38c4 DB |
797 | return 0; |
798 | ||
799 | /* already assigned? */ | |
6f840afb | 800 | if (s->pcmcia_irq) { |
eb14120f | 801 | p_dev->irq = s->pcmcia_irq; |
6f0f38c4 DB |
802 | return 0; |
803 | } | |
804 | ||
805 | /* prefer an exclusive ISA irq */ | |
806 | if (!pcmcia_setup_isa_irq(p_dev, 0)) | |
807 | return 0; | |
808 | ||
809 | /* but accept a shared ISA irq */ | |
810 | if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED)) | |
811 | return 0; | |
812 | ||
813 | /* but use the PCI irq otherwise */ | |
814 | if (s->pci_irq) { | |
eb14120f | 815 | p_dev->irq = s->pcmcia_irq = s->pci_irq; |
6f0f38c4 DB |
816 | return 0; |
817 | } | |
818 | ||
819 | return -EINVAL; | |
820 | } | |
821 | ||
822 | ||
cdb13808 DB |
823 | /** |
824 | * pcmcia_request_window() - attempt to reserve iomem for PCMCIA devices | |
9485ee14 DB |
825 | * @p_dev: the associated PCMCIA device |
826 | * @res: &struct resource pointing to p_dev->resource[2..5] | |
827 | * @speed: access speed | |
1a8d4663 | 828 | * |
cdb13808 | 829 | * pcmcia_request_window() attepts to reserve an iomem ranges specified in |
9485ee14 DB |
830 | * &struct resource @res pointing to one of the entries in |
831 | * &struct pcmcia_device @p_dev->resource[2..5]. The "start" value is the | |
cdb13808 DB |
832 | * requested start of the IO mem resource; "end" reflects the size |
833 | * requested. | |
1a8d4663 | 834 | */ |
cdb13808 DB |
835 | int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res, |
836 | unsigned int speed) | |
1a8d4663 | 837 | { |
6838b03f | 838 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 839 | pccard_mem_map *win; |
1a8d4663 DB |
840 | u_long align; |
841 | int w; | |
842 | ||
1c4a77bf DB |
843 | dev_dbg(&p_dev->dev, "request_window %pR %d\n", res, speed); |
844 | ||
6d9a299f | 845 | if (!(s->state & SOCKET_PRESENT)) { |
eb838fe1 | 846 | dev_dbg(&p_dev->dev, "No card present\n"); |
3939c1ef | 847 | return -ENODEV; |
6d9a299f | 848 | } |
1a8d4663 DB |
849 | |
850 | /* Window size defaults to smallest available */ | |
cdb13808 DB |
851 | if (res->end == 0) |
852 | res->end = s->map_size; | |
853 | align = (s->features & SS_CAP_MEM_ALIGN) ? res->end : s->map_size; | |
854 | if (res->end & (s->map_size-1)) { | |
eb838fe1 | 855 | dev_dbg(&p_dev->dev, "invalid map size\n"); |
69ba4433 DB |
856 | return -EINVAL; |
857 | } | |
cdb13808 DB |
858 | if ((res->start && (s->features & SS_CAP_STATIC_MAP)) || |
859 | (res->start & (align-1))) { | |
eb838fe1 | 860 | dev_dbg(&p_dev->dev, "invalid base address\n"); |
69ba4433 DB |
861 | return -EINVAL; |
862 | } | |
cdb13808 | 863 | if (res->start) |
1a8d4663 DB |
864 | align = 0; |
865 | ||
866 | /* Allocate system memory window */ | |
0ca724d3 | 867 | mutex_lock(&s->ops_mutex); |
1a8d4663 | 868 | for (w = 0; w < MAX_WIN; w++) |
9fea84f4 DB |
869 | if (!(s->state & SOCKET_WIN_REQ(w))) |
870 | break; | |
f958095e | 871 | if (w == MAX_WIN) { |
eb838fe1 | 872 | dev_dbg(&p_dev->dev, "all windows are used already\n"); |
0ca724d3 | 873 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
874 | return -EINVAL; |
875 | } | |
1a8d4663 DB |
876 | |
877 | win = &s->win[w]; | |
1a8d4663 DB |
878 | |
879 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
cdb13808 | 880 | win->res = pcmcia_find_mem_region(res->start, res->end, align, |
0ca724d3 | 881 | 0, s); |
82f88e36 | 882 | if (!win->res) { |
eb838fe1 | 883 | dev_dbg(&p_dev->dev, "allocating mem region failed\n"); |
6b8e087b | 884 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
885 | return -EINVAL; |
886 | } | |
1a8d4663 | 887 | } |
6838b03f | 888 | p_dev->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
889 | |
890 | /* Configure the socket controller */ | |
82f88e36 | 891 | win->map = w+1; |
cdb13808 DB |
892 | win->flags = res->flags & WIN_FLAGS_MAP; |
893 | win->speed = speed; | |
82f88e36 | 894 | win->card_start = 0; |
6b8e087b | 895 | |
82f88e36 | 896 | if (s->ops->set_mem_map(s, win) != 0) { |
eb838fe1 | 897 | dev_dbg(&p_dev->dev, "failed to set memory mapping\n"); |
6b8e087b | 898 | mutex_unlock(&s->ops_mutex); |
926c5402 DB |
899 | return -EIO; |
900 | } | |
1a8d4663 DB |
901 | s->state |= SOCKET_WIN_REQ(w); |
902 | ||
903 | /* Return window handle */ | |
9fea84f4 | 904 | if (s->features & SS_CAP_STATIC_MAP) |
cdb13808 | 905 | res->start = win->static_start; |
9fea84f4 | 906 | else |
cdb13808 | 907 | res->start = win->res->start; |
9fea84f4 | 908 | |
0ca724d3 | 909 | /* convert to new-style resources */ |
cdb13808 DB |
910 | res->end += res->start - 1; |
911 | res->flags &= ~WIN_FLAGS_REQ; | |
912 | res->flags |= (win->map << 2) | IORESOURCE_MEM; | |
ad0c7be2 DB |
913 | res->parent = win->res; |
914 | if (win->res) | |
915 | request_resource(&iomem_resource, res); | |
916 | ||
eb838fe1 | 917 | dev_dbg(&p_dev->dev, "request_window results in %pR\n", res); |
0ca724d3 | 918 | |
6b8e087b | 919 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 920 | |
4c89e88b | 921 | return 0; |
1a8d4663 DB |
922 | } /* pcmcia_request_window */ |
923 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc | 924 | |
9485ee14 DB |
925 | |
926 | /** | |
927 | * pcmcia_disable_device() - disable and clean up a PCMCIA device | |
928 | * @p_dev: the associated PCMCIA device | |
929 | * | |
930 | * pcmcia_disable_device() is the driver-callable counterpart to | |
931 | * pcmcia_enable_device(): If a PCMCIA device is no longer used, | |
932 | * drivers are expected to clean up and disable the device by calling | |
933 | * this function. Any I/O ranges (iomem and ioports) will be released, | |
934 | * the Vpp voltage will be set to 0, and IRQs will no longer be | |
935 | * generated -- at least if there is no other card function (of | |
936 | * multifunction devices) being used. | |
937 | */ | |
9fea84f4 DB |
938 | void pcmcia_disable_device(struct pcmcia_device *p_dev) |
939 | { | |
0ca724d3 | 940 | int i; |
1c4a77bf DB |
941 | |
942 | dev_dbg(&p_dev->dev, "disabling device\n"); | |
943 | ||
0ca724d3 DB |
944 | for (i = 0; i < MAX_WIN; i++) { |
945 | struct resource *res = p_dev->resource[MAX_IO_WIN + i]; | |
946 | if (res->flags & WIN_FLAGS_REQ) | |
947 | pcmcia_release_window(p_dev, res); | |
948 | } | |
949 | ||
5f2a71fc | 950 | pcmcia_release_configuration(p_dev); |
2ce4905e | 951 | pcmcia_release_io(p_dev); |
418c5278 | 952 | if (p_dev->_irq) { |
eb14120f | 953 | free_irq(p_dev->irq, p_dev->priv); |
418c5278 PM |
954 | p_dev->_irq = 0; |
955 | } | |
5f2a71fc DB |
956 | } |
957 | EXPORT_SYMBOL(pcmcia_disable_device); |