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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 DB |
165 | if (!(c->state & CONFIG_LOCKED)) { |
166 | dev_dbg(&s->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 | |
868575d1 | 207 | int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh, |
b5cb259e | 208 | unsigned int offset) |
1a8d4663 | 209 | { |
0bdf9b3d | 210 | struct pcmcia_socket *s = p_dev->socket; |
0ca724d3 DB |
211 | struct resource *res = wh; |
212 | unsigned int w; | |
6b8e087b | 213 | int ret; |
868575d1 | 214 | |
0ca724d3 DB |
215 | w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1; |
216 | if (w >= MAX_WIN) | |
ffb8da20 | 217 | return -EINVAL; |
b5cb259e | 218 | |
6b8e087b | 219 | mutex_lock(&s->ops_mutex); |
0ca724d3 DB |
220 | s->win[w].card_start = offset; |
221 | ret = s->ops->set_mem_map(s, &s->win[w]); | |
6b8e087b DB |
222 | if (ret) |
223 | dev_warn(&s->dev, "failed to set_mem_map\n"); | |
224 | mutex_unlock(&s->ops_mutex); | |
225 | return ret; | |
1a8d4663 DB |
226 | } /* pcmcia_map_mem_page */ |
227 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
228 | ||
229 | ||
230 | /** pcmcia_modify_configuration | |
231 | * | |
232 | * Modify a locked socket configuration | |
233 | */ | |
2bc5a9bd | 234 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
235 | modconf_t *mod) |
236 | { | |
237 | struct pcmcia_socket *s; | |
238 | config_t *c; | |
4e06e240 | 239 | int ret; |
1a8d4663 | 240 | |
2bc5a9bd | 241 | s = p_dev->socket; |
94a819f8 DB |
242 | |
243 | mutex_lock(&s->ops_mutex); | |
dbb22f0d DB |
244 | c = p_dev->function_config; |
245 | ||
6d9a299f DB |
246 | if (!(s->state & SOCKET_PRESENT)) { |
247 | dev_dbg(&s->dev, "No card present\n"); | |
4e06e240 JS |
248 | ret = -ENODEV; |
249 | goto unlock; | |
6d9a299f DB |
250 | } |
251 | if (!(c->state & CONFIG_LOCKED)) { | |
252 | dev_dbg(&s->dev, "Configuration isnt't locked\n"); | |
4e06e240 JS |
253 | ret = -EACCES; |
254 | goto unlock; | |
6d9a299f | 255 | } |
1a8d4663 | 256 | |
0cb3c49c DB |
257 | if (mod->Attributes & (CONF_IRQ_CHANGE_VALID | CONF_VCC_CHANGE_VALID)) { |
258 | dev_dbg(&s->dev, | |
259 | "changing Vcc or IRQ is not allowed at this time\n"); | |
4e06e240 JS |
260 | ret = -EINVAL; |
261 | goto unlock; | |
d8b0a49d | 262 | } |
1a8d4663 DB |
263 | |
264 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
265 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
266 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
60df3de8 | 267 | if (mod->Vpp1 != mod->Vpp2) { |
d50dbec3 | 268 | dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n"); |
4e06e240 JS |
269 | ret = -EINVAL; |
270 | goto unlock; | |
60df3de8 | 271 | } |
71ed90d8 | 272 | s->socket.Vpp = mod->Vpp1; |
d8b0a49d DB |
273 | if (s->ops->set_socket(s, &s->socket)) { |
274 | dev_printk(KERN_WARNING, &s->dev, | |
275 | "Unable to set VPP\n"); | |
4e06e240 JS |
276 | ret = -EIO; |
277 | goto unlock; | |
d8b0a49d | 278 | } |
1a8d4663 | 279 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || |
d8b0a49d | 280 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { |
d50dbec3 | 281 | dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n"); |
4e06e240 JS |
282 | ret = -EINVAL; |
283 | goto unlock; | |
d8b0a49d | 284 | } |
1a8d4663 | 285 | |
4bbed523 DB |
286 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
287 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
288 | pccard_io_map io_on; | |
289 | int i; | |
290 | ||
291 | io_on.speed = io_speed; | |
292 | for (i = 0; i < MAX_IO_WIN; i++) { | |
293 | if (!s->io[i].res) | |
294 | continue; | |
295 | io_off.map = i; | |
296 | io_on.map = i; | |
297 | ||
298 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
299 | io_on.start = s->io[i].res->start; | |
300 | io_on.stop = s->io[i].res->end; | |
301 | ||
302 | s->ops->set_io_map(s, &io_off); | |
303 | mdelay(40); | |
304 | s->ops->set_io_map(s, &io_on); | |
305 | } | |
306 | } | |
4e06e240 JS |
307 | ret = 0; |
308 | unlock: | |
94a819f8 | 309 | mutex_unlock(&s->ops_mutex); |
4bbed523 | 310 | |
4e06e240 | 311 | return ret; |
1a8d4663 DB |
312 | } /* modify_configuration */ |
313 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
314 | ||
315 | ||
2bc5a9bd | 316 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
317 | { |
318 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 319 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 | 320 | config_t *c; |
1a8d4663 DB |
321 | int i; |
322 | ||
9e86749c | 323 | mutex_lock(&s->ops_mutex); |
94a819f8 | 324 | c = p_dev->function_config; |
e2d40963 DB |
325 | if (p_dev->_locked) { |
326 | p_dev->_locked = 0; | |
1a8d4663 DB |
327 | if (--(s->lock_count) == 0) { |
328 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
329 | s->socket.Vpp = 0; | |
330 | s->socket.io_irq = 0; | |
331 | s->ops->set_socket(s, &s->socket); | |
332 | } | |
5f2a71fc DB |
333 | } |
334 | if (c->state & CONFIG_LOCKED) { | |
335 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
336 | if (c->state & CONFIG_IO_REQ) |
337 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 338 | if (!s->io[i].res) |
1a8d4663 DB |
339 | continue; |
340 | s->io[i].Config--; | |
341 | if (s->io[i].Config != 0) | |
342 | continue; | |
343 | io.map = i; | |
344 | s->ops->set_io_map(s, &io); | |
345 | } | |
1a8d4663 | 346 | } |
9e86749c | 347 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 348 | |
4c89e88b | 349 | return 0; |
1a8d4663 | 350 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
351 | |
352 | ||
353 | /** pcmcia_release_io | |
354 | * | |
355 | * Release_io() releases the I/O ranges allocated by a client. This | |
356 | * may be invoked some time after a card ejection has already dumped | |
357 | * the actual socket configuration, so if the client is "stale", we | |
358 | * don't bother checking the port ranges against the current socket | |
359 | * values. | |
360 | */ | |
2ce4905e | 361 | static int pcmcia_release_io(struct pcmcia_device *p_dev) |
1a8d4663 | 362 | { |
2bc5a9bd | 363 | struct pcmcia_socket *s = p_dev->socket; |
94a819f8 DB |
364 | int ret = -EINVAL; |
365 | config_t *c; | |
366 | ||
367 | mutex_lock(&s->ops_mutex); | |
9fea84f4 | 368 | if (!p_dev->_io) |
94a819f8 | 369 | goto out; |
5f2a71fc | 370 | |
2ce4905e | 371 | c = p_dev->function_config; |
1a8d4663 | 372 | |
2ce4905e | 373 | release_io_space(s, &c->io[0]); |
5f2a71fc | 374 | |
2ce4905e DB |
375 | if (c->io[1].end) |
376 | release_io_space(s, &c->io[1]); | |
1a8d4663 | 377 | |
2ce4905e DB |
378 | p_dev->_io = 0; |
379 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 | 380 | |
94a819f8 DB |
381 | out: |
382 | mutex_unlock(&s->ops_mutex); | |
383 | ||
384 | return ret; | |
1a8d4663 | 385 | } /* pcmcia_release_io */ |
1a8d4663 DB |
386 | |
387 | ||
0ca724d3 | 388 | int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res) |
1a8d4663 | 389 | { |
0bdf9b3d | 390 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 391 | pccard_mem_map *win; |
0ca724d3 | 392 | unsigned int w; |
1a8d4663 | 393 | |
0ca724d3 DB |
394 | dev_dbg(&p_dev->dev, "releasing window %pR\n", res); |
395 | ||
396 | w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1; | |
397 | if (w >= MAX_WIN) | |
ffb8da20 | 398 | return -EINVAL; |
0bdf9b3d | 399 | |
6b8e087b | 400 | mutex_lock(&s->ops_mutex); |
0ca724d3 | 401 | win = &s->win[w]; |
0bdf9b3d | 402 | |
0ca724d3 | 403 | if (!(p_dev->_win & CLIENT_WIN_REQ(w))) { |
6d9a299f | 404 | dev_dbg(&s->dev, "not releasing unknown window\n"); |
6b8e087b | 405 | mutex_unlock(&s->ops_mutex); |
ffb8da20 | 406 | return -EINVAL; |
6d9a299f | 407 | } |
1a8d4663 DB |
408 | |
409 | /* Shut down memory window */ | |
82f88e36 DB |
410 | win->flags &= ~MAP_ACTIVE; |
411 | s->ops->set_mem_map(s, win); | |
0ca724d3 | 412 | s->state &= ~SOCKET_WIN_REQ(w); |
1a8d4663 DB |
413 | |
414 | /* Release system memory */ | |
82f88e36 | 415 | if (win->res) { |
ad0c7be2 | 416 | release_resource(res); |
82f88e36 DB |
417 | release_resource(win->res); |
418 | kfree(win->res); | |
419 | win->res = NULL; | |
1a8d4663 | 420 | } |
0ca724d3 | 421 | p_dev->_win &= ~CLIENT_WIN_REQ(w); |
6b8e087b | 422 | mutex_unlock(&s->ops_mutex); |
1a8d4663 | 423 | |
4c89e88b | 424 | return 0; |
1a8d4663 DB |
425 | } /* pcmcia_release_window */ |
426 | EXPORT_SYMBOL(pcmcia_release_window); | |
427 | ||
428 | ||
2bc5a9bd | 429 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
430 | config_req_t *req) |
431 | { | |
432 | int i; | |
433 | u_int base; | |
2bc5a9bd | 434 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
435 | config_t *c; |
436 | pccard_io_map iomap; | |
437 | ||
1a8d4663 | 438 | if (!(s->state & SOCKET_PRESENT)) |
d598de02 | 439 | return -ENODEV; |
1a8d4663 | 440 | |
de6405e9 | 441 | if (req->IntType & INT_CARDBUS) { |
d50dbec3 | 442 | dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n"); |
de6405e9 DB |
443 | return -EINVAL; |
444 | } | |
94a819f8 DB |
445 | |
446 | mutex_lock(&s->ops_mutex); | |
dbb22f0d | 447 | c = p_dev->function_config; |
6d9a299f | 448 | if (c->state & CONFIG_LOCKED) { |
94a819f8 | 449 | mutex_unlock(&s->ops_mutex); |
6d9a299f | 450 | dev_dbg(&s->dev, "Configuration is locked\n"); |
943f70f1 | 451 | return -EACCES; |
6d9a299f | 452 | } |
1a8d4663 DB |
453 | |
454 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 455 | s->socket.Vpp = req->Vpp; |
d8b0a49d | 456 | if (s->ops->set_socket(s, &s->socket)) { |
9e86749c | 457 | mutex_unlock(&s->ops_mutex); |
d8b0a49d DB |
458 | dev_printk(KERN_WARNING, &s->dev, |
459 | "Unable to set socket state\n"); | |
460 | return -EINVAL; | |
461 | } | |
1a8d4663 | 462 | |
1a8d4663 DB |
463 | /* Pick memory or I/O card, DMA mode, interrupt */ |
464 | c->IntType = req->IntType; | |
465 | c->Attributes = req->Attributes; | |
466 | if (req->IntType & INT_MEMORY_AND_IO) | |
467 | s->socket.flags |= SS_IOCARD; | |
468 | if (req->IntType & INT_ZOOMED_VIDEO) | |
469 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
470 | if (req->Attributes & CONF_ENABLE_DMA) | |
471 | s->socket.flags |= SS_DMA_MODE; | |
472 | if (req->Attributes & CONF_ENABLE_SPKR) | |
473 | s->socket.flags |= SS_SPKR_ENA; | |
474 | if (req->Attributes & CONF_ENABLE_IRQ) | |
6f840afb | 475 | s->socket.io_irq = s->pcmcia_irq; |
1a8d4663 DB |
476 | else |
477 | s->socket.io_irq = 0; | |
478 | s->ops->set_socket(s, &s->socket); | |
479 | s->lock_count++; | |
480 | ||
481 | /* Set up CIS configuration registers */ | |
482 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 483 | c->CardValues = req->Present; |
1a8d4663 DB |
484 | if (req->Present & PRESENT_COPY) { |
485 | c->Copy = req->Copy; | |
486 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
487 | } | |
488 | if (req->Present & PRESENT_OPTION) { | |
489 | if (s->functions == 1) { | |
490 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
491 | } else { | |
492 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
493 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
494 | if (req->Present & PRESENT_IOBASE_0) | |
495 | c->Option |= COR_ADDR_DECODE; | |
496 | } | |
a7debe78 DB |
497 | if ((req->Attributes & CONF_ENABLE_IRQ) && |
498 | !(req->Attributes & CONF_ENABLE_PULSE_IRQ)) | |
499 | c->Option |= COR_LEVEL_REQ; | |
1a8d4663 DB |
500 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); |
501 | mdelay(40); | |
502 | } | |
503 | if (req->Present & PRESENT_STATUS) { | |
504 | c->Status = req->Status; | |
505 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
506 | } | |
507 | if (req->Present & PRESENT_PIN_REPLACE) { | |
508 | c->Pin = req->Pin; | |
509 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
510 | } | |
511 | if (req->Present & PRESENT_EXT_STATUS) { | |
512 | c->ExtStatus = req->ExtStatus; | |
513 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
514 | } | |
515 | if (req->Present & PRESENT_IOBASE_0) { | |
2ce4905e | 516 | u8 b = c->io[0].start & 0xff; |
1a8d4663 | 517 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); |
2ce4905e | 518 | b = (c->io[0].start >> 8) & 0xff; |
1a8d4663 DB |
519 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); |
520 | } | |
521 | if (req->Present & PRESENT_IOSIZE) { | |
2ce4905e | 522 | u8 b = resource_size(&c->io[0]) + resource_size(&c->io[1]) - 1; |
1a8d4663 DB |
523 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); |
524 | } | |
525 | ||
526 | /* Configure I/O windows */ | |
527 | if (c->state & CONFIG_IO_REQ) { | |
528 | iomap.speed = io_speed; | |
529 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 530 | if (s->io[i].res) { |
1a8d4663 DB |
531 | iomap.map = i; |
532 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 533 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
534 | case IO_DATA_PATH_WIDTH_16: |
535 | iomap.flags |= MAP_16BIT; break; | |
536 | case IO_DATA_PATH_WIDTH_AUTO: | |
537 | iomap.flags |= MAP_AUTOSZ; break; | |
538 | default: | |
539 | break; | |
540 | } | |
c7d00693 DB |
541 | iomap.start = s->io[i].res->start; |
542 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
543 | s->ops->set_io_map(s, &iomap); |
544 | s->io[i].Config++; | |
545 | } | |
546 | } | |
547 | ||
548 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 549 | p_dev->_locked = 1; |
059f667d | 550 | mutex_unlock(&s->ops_mutex); |
4c89e88b | 551 | return 0; |
1a8d4663 DB |
552 | } /* pcmcia_request_configuration */ |
553 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
554 | ||
555 | ||
2ce4905e DB |
556 | /** |
557 | * pcmcia_request_io() - attempt to reserve port ranges for PCMCIA devices | |
558 | * | |
559 | * pcmcia_request_io() attepts to reserve the IO port ranges specified in | |
90abdc3b | 560 | * &struct pcmcia_device @p_dev->resource[0] and @p_dev->resource[1]. The |
2ce4905e | 561 | * "start" value is the requested start of the IO port resource; "end" |
90abdc3b DB |
562 | * reflects the number of ports requested. The number of IO lines requested |
563 | * is specified in &struct pcmcia_device @p_dev->io_lines. | |
1a8d4663 | 564 | */ |
90abdc3b | 565 | int pcmcia_request_io(struct pcmcia_device *p_dev) |
1a8d4663 | 566 | { |
2bc5a9bd | 567 | struct pcmcia_socket *s = p_dev->socket; |
90abdc3b | 568 | config_t *c = p_dev->function_config; |
94a819f8 DB |
569 | int ret = -EINVAL; |
570 | ||
571 | mutex_lock(&s->ops_mutex); | |
90abdc3b | 572 | dev_dbg(&s->dev, "pcmcia_request_io: %pR , %pR", &c->io[0], &c->io[1]); |
1a8d4663 | 573 | |
6d9a299f | 574 | if (!(s->state & SOCKET_PRESENT)) { |
2ce4905e | 575 | dev_dbg(&s->dev, "pcmcia_request_io: No card present\n"); |
94a819f8 | 576 | goto out; |
6d9a299f | 577 | } |
1a8d4663 | 578 | |
6d9a299f DB |
579 | if (c->state & CONFIG_LOCKED) { |
580 | dev_dbg(&s->dev, "Configuration is locked\n"); | |
94a819f8 | 581 | goto out; |
6d9a299f | 582 | } |
f958095e | 583 | if (c->state & CONFIG_IO_REQ) { |
d50dbec3 | 584 | dev_dbg(&s->dev, "IO already configured\n"); |
94a819f8 | 585 | goto out; |
f958095e | 586 | } |
1a8d4663 | 587 | |
90abdc3b | 588 | ret = alloc_io_space(s, &c->io[0], p_dev->io_lines); |
2ce4905e | 589 | if (ret) |
94a819f8 | 590 | goto out; |
1a8d4663 | 591 | |
2ce4905e | 592 | if (c->io[1].end) { |
90abdc3b | 593 | ret = alloc_io_space(s, &c->io[1], p_dev->io_lines); |
94a819f8 | 594 | if (ret) { |
2ce4905e | 595 | release_io_space(s, &c->io[0]); |
94a819f8 | 596 | goto out; |
1a8d4663 | 597 | } |
2ce4905e DB |
598 | } else |
599 | c->io[1].start = 0; | |
1a8d4663 | 600 | |
1a8d4663 | 601 | c->state |= CONFIG_IO_REQ; |
e2d40963 | 602 | p_dev->_io = 1; |
94a819f8 | 603 | |
2ce4905e DB |
604 | dev_dbg(&s->dev, "pcmcia_request_io succeeded: %pR , %pR", |
605 | &c->io[0], &c->io[1]); | |
94a819f8 DB |
606 | out: |
607 | mutex_unlock(&s->ops_mutex); | |
608 | ||
609 | return ret; | |
1a8d4663 DB |
610 | } /* pcmcia_request_io */ |
611 | EXPORT_SYMBOL(pcmcia_request_io); | |
612 | ||
613 | ||
eb14120f DB |
614 | /** |
615 | * pcmcia_request_irq() - attempt to request a IRQ for a PCMCIA device | |
1a8d4663 | 616 | * |
eb14120f DB |
617 | * pcmcia_request_irq() is a wrapper around request_irq which will allow |
618 | * the PCMCIA core to clean up the registration in pcmcia_disable_device(). | |
619 | * Drivers are free to use request_irq() directly, but then they need to | |
620 | * call free_irq themselfves, too. Also, only IRQF_SHARED capable IRQ | |
621 | * handlers are allowed. | |
1a8d4663 | 622 | */ |
eb14120f DB |
623 | int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev, |
624 | irq_handler_t handler) | |
1a8d4663 | 625 | { |
eb14120f | 626 | int ret; |
1a8d4663 | 627 | |
eb14120f DB |
628 | if (!p_dev->irq) |
629 | return -EINVAL; | |
94a819f8 | 630 | |
eb14120f DB |
631 | ret = request_irq(p_dev->irq, handler, IRQF_SHARED, |
632 | p_dev->devname, p_dev->priv); | |
633 | if (!ret) | |
634 | p_dev->_irq = 1; | |
1a8d4663 | 635 | |
eb14120f DB |
636 | return ret; |
637 | } | |
638 | EXPORT_SYMBOL(pcmcia_request_irq); | |
6f0f38c4 | 639 | |
1a8d4663 | 640 | |
eb14120f DB |
641 | /** |
642 | * pcmcia_request_exclusive_irq() - attempt to request an exclusive IRQ first | |
643 | * | |
644 | * pcmcia_request_exclusive_irq() is a wrapper around request_irq which | |
645 | * attempts first to request an exclusive IRQ. If it fails, it also accepts | |
646 | * a shared IRQ, but prints out a warning. PCMCIA drivers should allow for | |
647 | * IRQ sharing and either use request_irq directly (then they need to call | |
648 | * free_irq themselves, too), or the pcmcia_request_irq() function. | |
649 | */ | |
650 | int __must_check | |
b19a7275 DB |
651 | __pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev, |
652 | irq_handler_t handler) | |
eb14120f DB |
653 | { |
654 | int ret; | |
1a8d4663 | 655 | |
eb14120f DB |
656 | if (!p_dev->irq) |
657 | return -EINVAL; | |
1a8d4663 | 658 | |
eb14120f DB |
659 | ret = request_irq(p_dev->irq, handler, 0, p_dev->devname, p_dev->priv); |
660 | if (ret) { | |
661 | ret = pcmcia_request_irq(p_dev, handler); | |
662 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " | |
663 | "request for exclusive IRQ could not be fulfilled.\n"); | |
664 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
665 | "needs updating to supported shared IRQ lines.\n"); | |
666 | } | |
667 | if (ret) | |
668 | dev_printk(KERN_INFO, &p_dev->dev, "request_irq() failed\n"); | |
669 | else | |
670 | p_dev->_irq = 1; | |
1a8d4663 | 671 | |
94a819f8 | 672 | return ret; |
eb14120f | 673 | } /* pcmcia_request_exclusive_irq */ |
b19a7275 | 674 | EXPORT_SYMBOL(__pcmcia_request_exclusive_irq); |
1a8d4663 DB |
675 | |
676 | ||
6f0f38c4 DB |
677 | #ifdef CONFIG_PCMCIA_PROBE |
678 | ||
679 | /* mask of IRQs already reserved by other cards, we should avoid using them */ | |
680 | static u8 pcmcia_used_irq[NR_IRQS]; | |
681 | ||
682 | static irqreturn_t test_action(int cpl, void *dev_id) | |
683 | { | |
684 | return IRQ_NONE; | |
685 | } | |
686 | ||
687 | /** | |
688 | * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used | |
689 | * @p_dev - the associated PCMCIA device | |
690 | * | |
691 | * locking note: must be called with ops_mutex locked. | |
692 | */ | |
693 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
694 | { | |
695 | struct pcmcia_socket *s = p_dev->socket; | |
696 | unsigned int try, irq; | |
697 | u32 mask = s->irq_mask; | |
698 | int ret = -ENODEV; | |
699 | ||
700 | for (try = 0; try < 64; try++) { | |
701 | irq = try % 32; | |
702 | ||
703 | /* marked as available by driver, not blocked by userspace? */ | |
704 | if (!((mask >> irq) & 1)) | |
705 | continue; | |
706 | ||
707 | /* avoid an IRQ which is already used by another PCMCIA card */ | |
708 | if ((try < 32) && pcmcia_used_irq[irq]) | |
709 | continue; | |
710 | ||
711 | /* register the correct driver, if possible, to check whether | |
712 | * registering a dummy handle works, i.e. if the IRQ isn't | |
713 | * marked as used by the kernel resource management core */ | |
714 | ret = request_irq(irq, test_action, type, p_dev->devname, | |
715 | p_dev); | |
716 | if (!ret) { | |
717 | free_irq(irq, p_dev); | |
eb14120f | 718 | p_dev->irq = s->pcmcia_irq = irq; |
6f0f38c4 DB |
719 | pcmcia_used_irq[irq]++; |
720 | break; | |
721 | } | |
722 | } | |
723 | ||
724 | return ret; | |
725 | } | |
726 | ||
727 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
728 | { | |
6f840afb DB |
729 | pcmcia_used_irq[s->pcmcia_irq]--; |
730 | s->pcmcia_irq = 0; | |
6f0f38c4 DB |
731 | } |
732 | ||
733 | #else /* CONFIG_PCMCIA_PROBE */ | |
734 | ||
735 | static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type) | |
736 | { | |
737 | return -EINVAL; | |
738 | } | |
739 | ||
740 | void pcmcia_cleanup_irq(struct pcmcia_socket *s) | |
741 | { | |
6f840afb | 742 | s->pcmcia_irq = 0; |
6f0f38c4 DB |
743 | return; |
744 | } | |
745 | ||
746 | #endif /* CONFIG_PCMCIA_PROBE */ | |
747 | ||
748 | ||
749 | /** | |
750 | * pcmcia_setup_irq() - determine IRQ to be used for device | |
751 | * @p_dev - the associated PCMCIA device | |
752 | * | |
753 | * locking note: must be called with ops_mutex locked. | |
754 | */ | |
755 | int pcmcia_setup_irq(struct pcmcia_device *p_dev) | |
756 | { | |
757 | struct pcmcia_socket *s = p_dev->socket; | |
758 | ||
eb14120f | 759 | if (p_dev->irq) |
6f0f38c4 DB |
760 | return 0; |
761 | ||
762 | /* already assigned? */ | |
6f840afb | 763 | if (s->pcmcia_irq) { |
eb14120f | 764 | p_dev->irq = s->pcmcia_irq; |
6f0f38c4 DB |
765 | return 0; |
766 | } | |
767 | ||
768 | /* prefer an exclusive ISA irq */ | |
769 | if (!pcmcia_setup_isa_irq(p_dev, 0)) | |
770 | return 0; | |
771 | ||
772 | /* but accept a shared ISA irq */ | |
773 | if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED)) | |
774 | return 0; | |
775 | ||
776 | /* but use the PCI irq otherwise */ | |
777 | if (s->pci_irq) { | |
eb14120f | 778 | p_dev->irq = s->pcmcia_irq = s->pci_irq; |
6f0f38c4 DB |
779 | return 0; |
780 | } | |
781 | ||
782 | return -EINVAL; | |
783 | } | |
784 | ||
785 | ||
1a8d4663 DB |
786 | /** pcmcia_request_window |
787 | * | |
788 | * Request_window() establishes a mapping between card memory space | |
789 | * and system memory space. | |
790 | */ | |
6838b03f | 791 | int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 792 | { |
6838b03f | 793 | struct pcmcia_socket *s = p_dev->socket; |
82f88e36 | 794 | pccard_mem_map *win; |
1a8d4663 | 795 | u_long align; |
0ca724d3 | 796 | struct resource *res; |
1a8d4663 DB |
797 | int w; |
798 | ||
6d9a299f DB |
799 | if (!(s->state & SOCKET_PRESENT)) { |
800 | dev_dbg(&s->dev, "No card present\n"); | |
3939c1ef | 801 | return -ENODEV; |
6d9a299f | 802 | } |
1a8d4663 DB |
803 | |
804 | /* Window size defaults to smallest available */ | |
805 | if (req->Size == 0) | |
806 | req->Size = s->map_size; | |
0ca724d3 | 807 | align = (s->features & SS_CAP_MEM_ALIGN) ? req->Size : s->map_size; |
69ba4433 | 808 | if (req->Size & (s->map_size-1)) { |
d50dbec3 | 809 | dev_dbg(&s->dev, "invalid map size\n"); |
69ba4433 DB |
810 | return -EINVAL; |
811 | } | |
1a8d4663 | 812 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || |
69ba4433 | 813 | (req->Base & (align-1))) { |
d50dbec3 | 814 | dev_dbg(&s->dev, "invalid base address\n"); |
69ba4433 DB |
815 | return -EINVAL; |
816 | } | |
1a8d4663 DB |
817 | if (req->Base) |
818 | align = 0; | |
819 | ||
820 | /* Allocate system memory window */ | |
0ca724d3 | 821 | mutex_lock(&s->ops_mutex); |
1a8d4663 | 822 | for (w = 0; w < MAX_WIN; w++) |
9fea84f4 DB |
823 | if (!(s->state & SOCKET_WIN_REQ(w))) |
824 | break; | |
f958095e | 825 | if (w == MAX_WIN) { |
d50dbec3 | 826 | dev_dbg(&s->dev, "all windows are used already\n"); |
0ca724d3 | 827 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
828 | return -EINVAL; |
829 | } | |
1a8d4663 DB |
830 | |
831 | win = &s->win[w]; | |
1a8d4663 DB |
832 | |
833 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
82f88e36 | 834 | win->res = pcmcia_find_mem_region(req->Base, req->Size, align, |
0ca724d3 | 835 | 0, s); |
82f88e36 | 836 | if (!win->res) { |
d50dbec3 | 837 | dev_dbg(&s->dev, "allocating mem region failed\n"); |
6b8e087b | 838 | mutex_unlock(&s->ops_mutex); |
f958095e DB |
839 | return -EINVAL; |
840 | } | |
1a8d4663 | 841 | } |
6838b03f | 842 | p_dev->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
843 | |
844 | /* Configure the socket controller */ | |
82f88e36 | 845 | win->map = w+1; |
0ca724d3 | 846 | win->flags = req->Attributes; |
82f88e36 | 847 | win->speed = req->AccessSpeed; |
82f88e36 | 848 | win->card_start = 0; |
6b8e087b | 849 | |
82f88e36 | 850 | if (s->ops->set_mem_map(s, win) != 0) { |
d50dbec3 | 851 | dev_dbg(&s->dev, "failed to set memory mapping\n"); |
6b8e087b | 852 | mutex_unlock(&s->ops_mutex); |
926c5402 DB |
853 | return -EIO; |
854 | } | |
1a8d4663 DB |
855 | s->state |= SOCKET_WIN_REQ(w); |
856 | ||
857 | /* Return window handle */ | |
9fea84f4 | 858 | if (s->features & SS_CAP_STATIC_MAP) |
82f88e36 | 859 | req->Base = win->static_start; |
9fea84f4 | 860 | else |
82f88e36 | 861 | req->Base = win->res->start; |
9fea84f4 | 862 | |
0ca724d3 DB |
863 | /* convert to new-style resources */ |
864 | res = p_dev->resource[w + MAX_IO_WIN]; | |
865 | res->start = req->Base; | |
866 | res->end = req->Base + req->Size - 1; | |
867 | res->flags &= ~IORESOURCE_BITS; | |
868 | res->flags |= (req->Attributes & WIN_FLAGS_MAP) | (win->map << 2); | |
ad0c7be2 DB |
869 | res->flags |= IORESOURCE_MEM; |
870 | res->parent = win->res; | |
871 | if (win->res) | |
872 | request_resource(&iomem_resource, res); | |
873 | ||
0ca724d3 DB |
874 | dev_dbg(&s->dev, "request_window results in %pR\n", res); |
875 | ||
6b8e087b | 876 | mutex_unlock(&s->ops_mutex); |
0ca724d3 | 877 | *wh = res; |
1a8d4663 | 878 | |
4c89e88b | 879 | return 0; |
1a8d4663 DB |
880 | } /* pcmcia_request_window */ |
881 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc | 882 | |
9fea84f4 DB |
883 | void pcmcia_disable_device(struct pcmcia_device *p_dev) |
884 | { | |
0ca724d3 DB |
885 | int i; |
886 | for (i = 0; i < MAX_WIN; i++) { | |
887 | struct resource *res = p_dev->resource[MAX_IO_WIN + i]; | |
888 | if (res->flags & WIN_FLAGS_REQ) | |
889 | pcmcia_release_window(p_dev, res); | |
890 | } | |
891 | ||
5f2a71fc | 892 | pcmcia_release_configuration(p_dev); |
2ce4905e | 893 | pcmcia_release_io(p_dev); |
418c5278 | 894 | if (p_dev->_irq) { |
eb14120f | 895 | free_irq(p_dev->irq, p_dev->priv); |
418c5278 PM |
896 | p_dev->_irq = 0; |
897 | } | |
5f2a71fc DB |
898 | } |
899 | EXPORT_SYMBOL(pcmcia_disable_device); |