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Merge branch 'for_rmk' of git://git.mnementh.co.uk/linux-2.6-im
[deliverable/linux.git] / drivers / pcmcia / pcmcia_resource.c
CommitLineData
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>
23
1a8d4663
DB		 24#include <pcmcia/cs_types.h>
25#include <pcmcia/ss.h>
26#include <pcmcia/cs.h>
1a8d4663
DB		 27#include <pcmcia/cistpl.h>
28#include <pcmcia/cisreg.h>
29#include <pcmcia/ds.h>
30
31#include "cs_internal.h"
32#include "ds_internal.h"
33
34
1a8d4663
DB		 35/* Access speed for IO windows */
36static int io_speed = 0;
37module_param(io_speed, int, 0444);
38
39
40#ifdef CONFIG_PCMCIA_PROBE
531e5ca6 41#include <asm/irq.h>
1a8d4663
DB		 42/* mask of IRQs already reserved by other cards, we should avoid using them */
43static u8 pcmcia_used_irq[NR_IRQS];
44#endif
45
46
47#ifdef DEBUG
48extern int ds_pc_debug;
1a8d4663
DB		 49
50#define ds_dbg(skt, lvl, fmt, arg...) do { \
51 if (ds_pc_debug >= lvl) \
52 printk(KERN_DEBUG "pcmcia_resource: %s: " fmt, \
53 cs_socket_name(skt) , ## arg); \
54} while (0)
55#else
56#define ds_dbg(lvl, fmt, arg...) do { } while (0)
57#endif
58
59
60
61/** alloc_io_space
62 *
63 * Special stuff for managing IO windows, because they are scarce
64 */
65
ecb8a847
OJ		 66static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
67 unsigned int *base, unsigned int num, u_int lines)
1a8d4663
DB		 68{
69 int i;
ecb8a847 70 unsigned int try, align;
1a8d4663
DB		 71
72 align = (*base) ? (lines ? 1<<lines : 0) : 1;
73 if (align && (align < num)) {
74 if (*base) {
ecb8a847 75 ds_dbg(s, 0, "odd IO request: num %#x align %#x\n",
1a8d4663
DB		 76 num, align);
77 align = 0;
78 } else
79 while (align && (align < num)) align <<= 1;
80 }
81 if (*base & ~(align-1)) {
ecb8a847 82 ds_dbg(s, 0, "odd IO request: base %#x align %#x\n",
1a8d4663
DB		 83 *base, align);
84 align = 0;
85 }
86 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
87 *base = s->io_offset | (*base & 0x0fff);
88 return 0;
89 }
90 /* Check for an already-allocated window that must conflict with
91 * what was asked for. It is a hack because it does not catch all
92 * potential conflicts, just the most obvious ones.
93 */
94 for (i = 0; i < MAX_IO_WIN; i++)
4708b5fa 95 if ((s->io[i].res) && *base &&
c7d00693 96 ((s->io[i].res->start & (align-1)) == *base))
1a8d4663
DB		 97 return 1;
98 for (i = 0; i < MAX_IO_WIN; i++) {
c7d00693 99 if (!s->io[i].res) {
1a8d4663
DB		 100 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
101 if (s->io[i].res) {
c7d00693
DB		 102 *base = s->io[i].res->start;
103 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
104 s->io[i].InUse = num;
1a8d4663
DB		 105 break;
106 } else
107 return 1;
c7d00693 108 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
1a8d4663
DB		 109 continue;
110 /* Try to extend top of window */
c7d00693 111 try = s->io[i].res->end + 1;
1a8d4663
DB		 112 if ((*base == 0) || (*base == try))
113 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
114 s->io[i].res->end + num, s) == 0) {
115 *base = try;
1a8d4663
DB		 116 s->io[i].InUse += num;
117 break;
118 }
119 /* Try to extend bottom of window */
c7d00693 120 try = s->io[i].res->start - num;
1a8d4663
DB		 121 if ((*base == 0) || (*base == try))
122 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
123 s->io[i].res->end, s) == 0) {
c7d00693 124 *base = try;
1a8d4663
DB		 125 s->io[i].InUse += num;
126 break;
127 }
128 }
129 return (i == MAX_IO_WIN);
130} /* alloc_io_space */
131
132
ecb8a847
OJ		 133static void release_io_space(struct pcmcia_socket *s, unsigned int base,
134 unsigned int num)
1a8d4663
DB		 135{
136 int i;
137
138 for (i = 0; i < MAX_IO_WIN; i++) {
c7d00693
DB		 139 if (!s->io[i].res)
140 continue;
141 if ((s->io[i].res->start <= base) &&
142 (s->io[i].res->end >= base+num-1)) {
1a8d4663
DB		 143 s->io[i].InUse -= num;
144 /* Free the window if no one else is using it */
145 if (s->io[i].InUse == 0) {
1a8d4663
DB		 146 release_resource(s->io[i].res);
147 kfree(s->io[i].res);
148 s->io[i].res = NULL;
149 }
150 }
151 }
152} /* release_io_space */
153
154
155/** pccard_access_configuration_register
156 *
157 * Access_configuration_register() reads and writes configuration
158 * registers in attribute memory. Memory window 0 is reserved for
159 * this and the tuple reading services.
160 */
161
855cdf13 162int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
1a8d4663
DB		 163 conf_reg_t *reg)
164{
855cdf13 165 struct pcmcia_socket *s;
1a8d4663
DB		 166 config_t *c;
167 int addr;
168 u_char val;
169
855cdf13 170 if (!p_dev || !p_dev->function_config)
1a8d4663
DB		 171 return CS_NO_CARD;
172
855cdf13
DB		 173 s = p_dev->socket;
174 c = p_dev->function_config;
1a8d4663
DB		 175
176 if (!(c->state & CONFIG_LOCKED))
177 return CS_CONFIGURATION_LOCKED;
178
179 addr = (c->ConfigBase + reg->Offset) >> 1;
180
181 switch (reg->Action) {
182 case CS_READ:
183 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
184 reg->Value = val;
185 break;
186 case CS_WRITE:
187 val = reg->Value;
188 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
189 break;
190 default:
191 return CS_BAD_ARGS;
192 break;
193 }
194 return CS_SUCCESS;
855cdf13 195} /* pcmcia_access_configuration_register */
3448139b
DB		 196EXPORT_SYMBOL(pcmcia_access_configuration_register);
197
1a8d4663 198
1a8d4663 199int pccard_get_configuration_info(struct pcmcia_socket *s,
855cdf13 200 struct pcmcia_device *p_dev,
1a8d4663
DB		 201 config_info_t *config)
202{
203 config_t *c;
204
205 if (!(s->state & SOCKET_PRESENT))
206 return CS_NO_CARD;
207
1a8d4663
DB		 208
209#ifdef CONFIG_CARDBUS
210 if (s->state & SOCKET_CARDBUS) {
211 memset(config, 0, sizeof(config_info_t));
212 config->Vcc = s->socket.Vcc;
213 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
214 config->Option = s->cb_dev->subordinate->number;
215 if (s->state & SOCKET_CARDBUS_CONFIG) {
216 config->Attributes = CONF_VALID_CLIENT;
217 config->IntType = INT_CARDBUS;
218 config->AssignedIRQ = s->irq.AssignedIRQ;
219 if (config->AssignedIRQ)
220 config->Attributes |= CONF_ENABLE_IRQ;
48b950ff
DR		 221 if (s->io[0].res) {
222 config->BasePort1 = s->io[0].res->start;
223 config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1;
224 }
1a8d4663
DB		 225 }
226 return CS_SUCCESS;
227 }
228#endif
229
48b950ff
DR		 230 if (p_dev) {
231 c = p_dev->function_config;
232 config->Function = p_dev->func;
233 } else {
234 c = NULL;
235 config->Function = 0;
236 }
1a8d4663
DB		 237
238 if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
239 config->Attributes = 0;
240 config->Vcc = s->socket.Vcc;
241 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
242 return CS_SUCCESS;
243 }
244
47a31976
DR		 245 config->Attributes = c->Attributes | CONF_VALID_CLIENT;
246 config->Vcc = s->socket.Vcc;
247 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
248 config->IntType = c->IntType;
249 config->ConfigBase = c->ConfigBase;
250 config->Status = c->Status;
251 config->Pin = c->Pin;
252 config->Copy = c->Copy;
253 config->Option = c->Option;
254 config->ExtStatus = c->ExtStatus;
255 config->Present = config->CardValues = c->CardValues;
1a8d4663
DB		 256 config->IRQAttributes = c->irq.Attributes;
257 config->AssignedIRQ = s->irq.AssignedIRQ;
258 config->BasePort1 = c->io.BasePort1;
259 config->NumPorts1 = c->io.NumPorts1;
260 config->Attributes1 = c->io.Attributes1;
261 config->BasePort2 = c->io.BasePort2;
262 config->NumPorts2 = c->io.NumPorts2;
263 config->Attributes2 = c->io.Attributes2;
264 config->IOAddrLines = c->io.IOAddrLines;
265
266 return CS_SUCCESS;
267} /* pccard_get_configuration_info */
1a8d4663 268
2bc5a9bd 269int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
3448139b 270 config_info_t *config)
1a8d4663 271{
855cdf13 272 return pccard_get_configuration_info(p_dev->socket, p_dev,
2bc5a9bd 273 config);
3448139b
DB		 274}
275EXPORT_SYMBOL(pcmcia_get_configuration_info);
1a8d4663
DB		 276
277
278/** pcmcia_get_window
279 */
280int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
281 int idx, win_req_t *req)
282{
283 window_t *win;
284 int w;
285
286 if (!s || !(s->state & SOCKET_PRESENT))
287 return CS_NO_CARD;
288 for (w = idx; w < MAX_WIN; w++)
289 if (s->state & SOCKET_WIN_REQ(w))
290 break;
291 if (w == MAX_WIN)
292 return CS_NO_MORE_ITEMS;
293 win = &s->win[w];
294 req->Base = win->ctl.res->start;
295 req->Size = win->ctl.res->end - win->ctl.res->start + 1;
296 req->AccessSpeed = win->ctl.speed;
297 req->Attributes = 0;
298 if (win->ctl.flags & MAP_ATTRIB)
299 req->Attributes |= WIN_MEMORY_TYPE_AM;
300 if (win->ctl.flags & MAP_ACTIVE)
301 req->Attributes |= WIN_ENABLE;
302 if (win->ctl.flags & MAP_16BIT)
303 req->Attributes |= WIN_DATA_WIDTH_16;
304 if (win->ctl.flags & MAP_USE_WAIT)
305 req->Attributes |= WIN_USE_WAIT;
306 *handle = win;
307 return CS_SUCCESS;
308} /* pcmcia_get_window */
309EXPORT_SYMBOL(pcmcia_get_window);
310
311
1a8d4663
DB		 312/** pcmcia_get_mem_page
313 *
314 * Change the card address of an already open memory window.
315 */
316int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
317{
318 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
319 return CS_BAD_HANDLE;
320 req->Page = 0;
321 req->CardOffset = win->ctl.card_start;
322 return CS_SUCCESS;
323} /* pcmcia_get_mem_page */
324EXPORT_SYMBOL(pcmcia_get_mem_page);
325
326
327int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
328{
329 struct pcmcia_socket *s;
330 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
331 return CS_BAD_HANDLE;
332 if (req->Page != 0)
333 return CS_BAD_PAGE;
334 s = win->sock;
335 win->ctl.card_start = req->CardOffset;
336 if (s->ops->set_mem_map(s, &win->ctl) != 0)
337 return CS_BAD_OFFSET;
338 return CS_SUCCESS;
339} /* pcmcia_map_mem_page */
340EXPORT_SYMBOL(pcmcia_map_mem_page);
341
342
343/** pcmcia_modify_configuration
344 *
345 * Modify a locked socket configuration
346 */
2bc5a9bd 347int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
1a8d4663
DB		 348 modconf_t *mod)
349{
350 struct pcmcia_socket *s;
351 config_t *c;
352
2bc5a9bd 353 s = p_dev->socket;
dbb22f0d
DB		 354 c = p_dev->function_config;
355
1a8d4663
DB		 356 if (!(s->state & SOCKET_PRESENT))
357 return CS_NO_CARD;
358 if (!(c->state & CONFIG_LOCKED))
359 return CS_CONFIGURATION_LOCKED;
360
361 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
362 if (mod->Attributes & CONF_ENABLE_IRQ) {
363 c->Attributes |= CONF_ENABLE_IRQ;
364 s->socket.io_irq = s->irq.AssignedIRQ;
365 } else {
366 c->Attributes &= ~CONF_ENABLE_IRQ;
367 s->socket.io_irq = 0;
368 }
369 s->ops->set_socket(s, &s->socket);
370 }
371
372 if (mod->Attributes & CONF_VCC_CHANGE_VALID)
373 return CS_BAD_VCC;
374
375 /* We only allow changing Vpp1 and Vpp2 to the same value */
376 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
377 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
378 if (mod->Vpp1 != mod->Vpp2)
379 return CS_BAD_VPP;
71ed90d8 380 s->socket.Vpp = mod->Vpp1;
1a8d4663
DB		 381 if (s->ops->set_socket(s, &s->socket))
382 return CS_BAD_VPP;
383 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
384 (mod->Attributes & CONF_VPP2_CHANGE_VALID))
385 return CS_BAD_VPP;
386
4bbed523
DB		 387 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
388 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
389 pccard_io_map io_on;
390 int i;
391
392 io_on.speed = io_speed;
393 for (i = 0; i < MAX_IO_WIN; i++) {
394 if (!s->io[i].res)
395 continue;
396 io_off.map = i;
397 io_on.map = i;
398
399 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
400 io_on.start = s->io[i].res->start;
401 io_on.stop = s->io[i].res->end;
402
403 s->ops->set_io_map(s, &io_off);
404 mdelay(40);
405 s->ops->set_io_map(s, &io_on);
406 }
407 }
408
1a8d4663
DB		 409 return CS_SUCCESS;
410} /* modify_configuration */
411EXPORT_SYMBOL(pcmcia_modify_configuration);
412
413
2bc5a9bd 414int pcmcia_release_configuration(struct pcmcia_device *p_dev)
1a8d4663
DB		 415{
416 pccard_io_map io = { 0, 0, 0, 0, 1 };
2bc5a9bd 417 struct pcmcia_socket *s = p_dev->socket;
5f2a71fc 418 config_t *c = p_dev->function_config;
1a8d4663
DB		 419 int i;
420
e2d40963
DB		 421 if (p_dev->_locked) {
422 p_dev->_locked = 0;
1a8d4663
DB		 423 if (--(s->lock_count) == 0) {
424 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
425 s->socket.Vpp = 0;
426 s->socket.io_irq = 0;
427 s->ops->set_socket(s, &s->socket);
428 }
5f2a71fc
DB		 429 }
430 if (c->state & CONFIG_LOCKED) {
431 c->state &= ~CONFIG_LOCKED;
1a8d4663
DB		 432 if (c->state & CONFIG_IO_REQ)
433 for (i = 0; i < MAX_IO_WIN; i++) {
c7d00693 434 if (!s->io[i].res)
1a8d4663
DB		 435 continue;
436 s->io[i].Config--;
437 if (s->io[i].Config != 0)
438 continue;
439 io.map = i;
440 s->ops->set_io_map(s, &io);
441 }
1a8d4663
DB		 442 }
443
444 return CS_SUCCESS;
445} /* pcmcia_release_configuration */
1a8d4663
DB		 446
447
448/** pcmcia_release_io
449 *
450 * Release_io() releases the I/O ranges allocated by a client. This
451 * may be invoked some time after a card ejection has already dumped
452 * the actual socket configuration, so if the client is "stale", we
453 * don't bother checking the port ranges against the current socket
454 * values.
455 */
b4c88400 456static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
1a8d4663 457{
2bc5a9bd 458 struct pcmcia_socket *s = p_dev->socket;
5f2a71fc 459 config_t *c = p_dev->function_config;
1a8d4663 460
e2d40963 461 if (!p_dev->_io )
1a8d4663 462 return CS_BAD_HANDLE;
5f2a71fc 463
e2d40963 464 p_dev->_io = 0;
1a8d4663 465
5f2a71fc
DB		 466 if ((c->io.BasePort1 != req->BasePort1) ||
467 (c->io.NumPorts1 != req->NumPorts1) ||
468 (c->io.BasePort2 != req->BasePort2) ||
469 (c->io.NumPorts2 != req->NumPorts2))
470 return CS_BAD_ARGS;
471
472 c->state &= ~CONFIG_IO_REQ;
1a8d4663
DB		 473
474 release_io_space(s, req->BasePort1, req->NumPorts1);
475 if (req->NumPorts2)
476 release_io_space(s, req->BasePort2, req->NumPorts2);
477
478 return CS_SUCCESS;
479} /* pcmcia_release_io */
1a8d4663
DB		 480
481
b4c88400 482static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
1a8d4663 483{
2bc5a9bd 484 struct pcmcia_socket *s = p_dev->socket;
5f2a71fc
DB		 485 config_t *c= p_dev->function_config;
486
e2d40963 487 if (!p_dev->_irq)
1a8d4663 488 return CS_BAD_HANDLE;
e2d40963 489 p_dev->_irq = 0;
1a8d4663 490
5f2a71fc
DB		 491 if (c->state & CONFIG_LOCKED)
492 return CS_CONFIGURATION_LOCKED;
493 if (c->irq.Attributes != req->Attributes)
494 return CS_BAD_ATTRIBUTE;
495 if (s->irq.AssignedIRQ != req->AssignedIRQ)
496 return CS_BAD_IRQ;
497 if (--s->irq.Config == 0) {
498 c->state &= ~CONFIG_IRQ_REQ;
499 s->irq.AssignedIRQ = 0;
1a8d4663
DB		 500 }
501
502 if (req->Attributes & IRQ_HANDLE_PRESENT) {
503 free_irq(req->AssignedIRQ, req->Instance);
504 }
505
506#ifdef CONFIG_PCMCIA_PROBE
507 pcmcia_used_irq[req->AssignedIRQ]--;
508#endif
509
510 return CS_SUCCESS;
511} /* pcmcia_release_irq */
1a8d4663
DB		 512
513
514int pcmcia_release_window(window_handle_t win)
515{
516 struct pcmcia_socket *s;
517
518 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
519 return CS_BAD_HANDLE;
520 s = win->sock;
e2d40963 521 if (!(win->handle->_win & CLIENT_WIN_REQ(win->index)))
1a8d4663
DB		 522 return CS_BAD_HANDLE;
523
524 /* Shut down memory window */
525 win->ctl.flags &= ~MAP_ACTIVE;
526 s->ops->set_mem_map(s, &win->ctl);
527 s->state &= ~SOCKET_WIN_REQ(win->index);
528
529 /* Release system memory */
530 if (win->ctl.res) {
531 release_resource(win->ctl.res);
532 kfree(win->ctl.res);
533 win->ctl.res = NULL;
534 }
e2d40963 535 win->handle->_win &= ~CLIENT_WIN_REQ(win->index);
1a8d4663
DB		 536
537 win->magic = 0;
538
539 return CS_SUCCESS;
540} /* pcmcia_release_window */
541EXPORT_SYMBOL(pcmcia_release_window);
542
543
2bc5a9bd 544int pcmcia_request_configuration(struct pcmcia_device *p_dev,
1a8d4663
DB		 545 config_req_t *req)
546{
547 int i;
548 u_int base;
2bc5a9bd 549 struct pcmcia_socket *s = p_dev->socket;
1a8d4663
DB		 550 config_t *c;
551 pccard_io_map iomap;
552
1a8d4663
DB		 553 if (!(s->state & SOCKET_PRESENT))
554 return CS_NO_CARD;
555
1a8d4663
DB		 556 if (req->IntType & INT_CARDBUS)
557 return CS_UNSUPPORTED_MODE;
dbb22f0d 558 c = p_dev->function_config;
1a8d4663
DB		 559 if (c->state & CONFIG_LOCKED)
560 return CS_CONFIGURATION_LOCKED;
561
562 /* Do power control. We don't allow changes in Vcc. */
70294b46 563 s->socket.Vpp = req->Vpp;
1a8d4663
DB		 564 if (s->ops->set_socket(s, &s->socket))
565 return CS_BAD_VPP;
566
1a8d4663
DB		 567 /* Pick memory or I/O card, DMA mode, interrupt */
568 c->IntType = req->IntType;
569 c->Attributes = req->Attributes;
570 if (req->IntType & INT_MEMORY_AND_IO)
571 s->socket.flags |= SS_IOCARD;
572 if (req->IntType & INT_ZOOMED_VIDEO)
573 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
574 if (req->Attributes & CONF_ENABLE_DMA)
575 s->socket.flags |= SS_DMA_MODE;
576 if (req->Attributes & CONF_ENABLE_SPKR)
577 s->socket.flags |= SS_SPKR_ENA;
578 if (req->Attributes & CONF_ENABLE_IRQ)
579 s->socket.io_irq = s->irq.AssignedIRQ;
580 else
581 s->socket.io_irq = 0;
582 s->ops->set_socket(s, &s->socket);
583 s->lock_count++;
584
585 /* Set up CIS configuration registers */
586 base = c->ConfigBase = req->ConfigBase;
1ae9c7d8 587 c->CardValues = req->Present;
1a8d4663
DB		 588 if (req->Present & PRESENT_COPY) {
589 c->Copy = req->Copy;
590 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
591 }
592 if (req->Present & PRESENT_OPTION) {
593 if (s->functions == 1) {
594 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
595 } else {
596 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
597 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
598 if (req->Present & PRESENT_IOBASE_0)
599 c->Option |= COR_ADDR_DECODE;
600 }
601 if (c->state & CONFIG_IRQ_REQ)
602 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
603 c->Option |= COR_LEVEL_REQ;
604 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
605 mdelay(40);
606 }
607 if (req->Present & PRESENT_STATUS) {
608 c->Status = req->Status;
609 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
610 }
611 if (req->Present & PRESENT_PIN_REPLACE) {
612 c->Pin = req->Pin;
613 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
614 }
615 if (req->Present & PRESENT_EXT_STATUS) {
616 c->ExtStatus = req->ExtStatus;
617 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
618 }
619 if (req->Present & PRESENT_IOBASE_0) {
620 u_char b = c->io.BasePort1 & 0xff;
621 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
622 b = (c->io.BasePort1 >> 8) & 0xff;
623 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
624 }
625 if (req->Present & PRESENT_IOSIZE) {
626 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
627 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
628 }
629
630 /* Configure I/O windows */
631 if (c->state & CONFIG_IO_REQ) {
632 iomap.speed = io_speed;
633 for (i = 0; i < MAX_IO_WIN; i++)
c7d00693 634 if (s->io[i].res) {
1a8d4663
DB		 635 iomap.map = i;
636 iomap.flags = MAP_ACTIVE;
c7d00693 637 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
1a8d4663
DB		 638 case IO_DATA_PATH_WIDTH_16:
639 iomap.flags |= MAP_16BIT; break;
640 case IO_DATA_PATH_WIDTH_AUTO:
641 iomap.flags |= MAP_AUTOSZ; break;
642 default:
643 break;
644 }
c7d00693
DB		 645 iomap.start = s->io[i].res->start;
646 iomap.stop = s->io[i].res->end;
1a8d4663
DB		 647 s->ops->set_io_map(s, &iomap);
648 s->io[i].Config++;
649 }
650 }
651
652 c->state |= CONFIG_LOCKED;
e2d40963 653 p_dev->_locked = 1;
1a8d4663
DB		 654 return CS_SUCCESS;
655} /* pcmcia_request_configuration */
656EXPORT_SYMBOL(pcmcia_request_configuration);
657
658
659/** pcmcia_request_io
660 *
661 * Request_io() reserves ranges of port addresses for a socket.
662 * I have not implemented range sharing or alias addressing.
663 */
2bc5a9bd 664int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
1a8d4663 665{
2bc5a9bd 666 struct pcmcia_socket *s = p_dev->socket;
1a8d4663
DB		 667 config_t *c;
668
1a8d4663
DB		 669 if (!(s->state & SOCKET_PRESENT))
670 return CS_NO_CARD;
671
1a8d4663
DB		 672 if (!req)
673 return CS_UNSUPPORTED_MODE;
dbb22f0d 674 c = p_dev->function_config;
1a8d4663
DB		 675 if (c->state & CONFIG_LOCKED)
676 return CS_CONFIGURATION_LOCKED;
677 if (c->state & CONFIG_IO_REQ)
678 return CS_IN_USE;
679 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
680 return CS_BAD_ATTRIBUTE;
681 if ((req->NumPorts2 > 0) &&
682 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
683 return CS_BAD_ATTRIBUTE;
684
685 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
686 req->NumPorts1, req->IOAddrLines))
687 return CS_IN_USE;
688
689 if (req->NumPorts2) {
690 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
691 req->NumPorts2, req->IOAddrLines)) {
692 release_io_space(s, req->BasePort1, req->NumPorts1);
693 return CS_IN_USE;
694 }
695 }
696
697 c->io = *req;
698 c->state |= CONFIG_IO_REQ;
e2d40963 699 p_dev->_io = 1;
1a8d4663
DB		 700 return CS_SUCCESS;
701} /* pcmcia_request_io */
702EXPORT_SYMBOL(pcmcia_request_io);
703
704
705/** pcmcia_request_irq
706 *
707 * Request_irq() reserves an irq for this client.
708 *
709 * Also, since Linux only reserves irq's when they are actually
710 * hooked, we don't guarantee that an irq will still be available
711 * when the configuration is locked. Now that I think about it,
712 * there might be a way to fix this using a dummy handler.
713 */
714
715#ifdef CONFIG_PCMCIA_PROBE
7d12e780 716static irqreturn_t test_action(int cpl, void *dev_id)
1a8d4663
DB		 717{
718 return IRQ_NONE;
719}
720#endif
721
2bc5a9bd 722int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
1a8d4663 723{
2bc5a9bd 724 struct pcmcia_socket *s = p_dev->socket;
1a8d4663
DB		 725 config_t *c;
726 int ret = CS_IN_USE, irq = 0;
c533120b 727 int type;
1a8d4663 728
1a8d4663
DB		 729 if (!(s->state & SOCKET_PRESENT))
730 return CS_NO_CARD;
dbb22f0d 731 c = p_dev->function_config;
1a8d4663
DB		 732 if (c->state & CONFIG_LOCKED)
733 return CS_CONFIGURATION_LOCKED;
734 if (c->state & CONFIG_IRQ_REQ)
735 return CS_IN_USE;
736
c533120b
AC		 737 /* Decide what type of interrupt we are registering */
738 type = 0;
739 if (s->functions > 1) /* All of this ought to be handled higher up */
dace1453 740 type = IRQF_SHARED;
c533120b 741 if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
dace1453 742 type = IRQF_SHARED;
c533120b 743
1a8d4663 744#ifdef CONFIG_PCMCIA_PROBE
635416ef
AC		 745
746#ifdef IRQ_NOAUTOEN
747 /* if the underlying IRQ infrastructure allows for it, only allocate
748 * the IRQ, but do not enable it
749 */
750 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
751 type |= IRQ_NOAUTOEN;
752#endif /* IRQ_NOAUTOEN */
753
1a8d4663
DB		 754 if (s->irq.AssignedIRQ != 0) {
755 /* If the interrupt is already assigned, it must be the same */
756 irq = s->irq.AssignedIRQ;
757 } else {
758 int try;
759 u32 mask = s->irq_mask;
a1b274fb 760 void *data = &p_dev->dev.driver; /* something unique to this device */
1a8d4663
DB		 761
762 for (try = 0; try < 64; try++) {
763 irq = try % 32;
764
765 /* marked as available by driver, and not blocked by userspace? */
766 if (!((mask >> irq) & 1))
767 continue;
768
769 /* avoid an IRQ which is already used by a PCMCIA card */
770 if ((try < 32) && pcmcia_used_irq[irq])
771 continue;
772
773 /* register the correct driver, if possible, of check whether
774 * registering a dummy handle works, i.e. if the IRQ isn't
775 * marked as used by the kernel resource management core */
776 ret = request_irq(irq,
777 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
c533120b 778 type,
bd65a685 779 p_dev->devname,
1a8d4663
DB		 780 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
781 if (!ret) {
782 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
783 free_irq(irq, data);
784 break;
785 }
786 }
787 }
788#endif
c181e0e0
DR		 789 /* only assign PCI irq if no IRQ already assigned */
790 if (ret && !s->irq.AssignedIRQ) {
1a8d4663
DB		 791 if (!s->pci_irq)
792 return ret;
dace1453 793 type = IRQF_SHARED;
1a8d4663
DB		 794 irq = s->pci_irq;
795 }
796
c533120b
AC		 797 if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) {
798 if (request_irq(irq, req->Handler, type, p_dev->devname, req->Instance))
1a8d4663
DB		 799 return CS_IN_USE;
800 }
801
c533120b 802 /* Make sure the fact the request type was overridden is passed back */
dace1453 803 if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
c533120b
AC		 804 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
805 printk(KERN_WARNING "pcmcia: request for exclusive IRQ could not be fulfilled.\n");
806 printk(KERN_WARNING "pcmcia: the driver needs updating to supported shared IRQ lines.\n");
807 }
1a8d4663
DB		 808 c->irq.Attributes = req->Attributes;
809 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
810 s->irq.Config++;
811
812 c->state |= CONFIG_IRQ_REQ;
e2d40963 813 p_dev->_irq = 1;
1a8d4663
DB		 814
815#ifdef CONFIG_PCMCIA_PROBE
816 pcmcia_used_irq[irq]++;
817#endif
818
819 return CS_SUCCESS;
820} /* pcmcia_request_irq */
821EXPORT_SYMBOL(pcmcia_request_irq);
822
823
824/** pcmcia_request_window
825 *
826 * Request_window() establishes a mapping between card memory space
827 * and system memory space.
828 */
2bc5a9bd 829int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
1a8d4663 830{
2bc5a9bd 831 struct pcmcia_socket *s = (*p_dev)->socket;
1a8d4663
DB		 832 window_t *win;
833 u_long align;
834 int w;
835
1a8d4663
DB		 836 if (!(s->state & SOCKET_PRESENT))
837 return CS_NO_CARD;
838 if (req->Attributes & (WIN_PAGED | WIN_SHARED))
839 return CS_BAD_ATTRIBUTE;
840
841 /* Window size defaults to smallest available */
842 if (req->Size == 0)
843 req->Size = s->map_size;
844 align = (((s->features & SS_CAP_MEM_ALIGN) ||
845 (req->Attributes & WIN_STRICT_ALIGN)) ?
846 req->Size : s->map_size);
847 if (req->Size & (s->map_size-1))
848 return CS_BAD_SIZE;
849 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
850 (req->Base & (align-1)))
851 return CS_BAD_BASE;
852 if (req->Base)
853 align = 0;
854
855 /* Allocate system memory window */
856 for (w = 0; w < MAX_WIN; w++)
857 if (!(s->state & SOCKET_WIN_REQ(w))) break;
858 if (w == MAX_WIN)
859 return CS_OUT_OF_RESOURCE;
860
861 win = &s->win[w];
862 win->magic = WINDOW_MAGIC;
863 win->index = w;
2bc5a9bd 864 win->handle = *p_dev;
1a8d4663
DB		 865 win->sock = s;
866
867 if (!(s->features & SS_CAP_STATIC_MAP)) {
868 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
869 (req->Attributes & WIN_MAP_BELOW_1MB), s);
870 if (!win->ctl.res)
871 return CS_IN_USE;
872 }
e2d40963 873 (*p_dev)->_win |= CLIENT_WIN_REQ(w);
1a8d4663
DB		 874
875 /* Configure the socket controller */
876 win->ctl.map = w+1;
877 win->ctl.flags = 0;
878 win->ctl.speed = req->AccessSpeed;
879 if (req->Attributes & WIN_MEMORY_TYPE)
880 win->ctl.flags |= MAP_ATTRIB;
881 if (req->Attributes & WIN_ENABLE)
882 win->ctl.flags |= MAP_ACTIVE;
883 if (req->Attributes & WIN_DATA_WIDTH_16)
884 win->ctl.flags |= MAP_16BIT;
885 if (req->Attributes & WIN_USE_WAIT)
886 win->ctl.flags |= MAP_USE_WAIT;
887 win->ctl.card_start = 0;
888 if (s->ops->set_mem_map(s, &win->ctl) != 0)
889 return CS_BAD_ARGS;
890 s->state |= SOCKET_WIN_REQ(w);
891
892 /* Return window handle */
893 if (s->features & SS_CAP_STATIC_MAP) {
894 req->Base = win->ctl.static_start;
895 } else {
896 req->Base = win->ctl.res->start;
897 }
898 *wh = win;
899
900 return CS_SUCCESS;
901} /* pcmcia_request_window */
902EXPORT_SYMBOL(pcmcia_request_window);
5f2a71fc
DB		 903
904void pcmcia_disable_device(struct pcmcia_device *p_dev) {
5f2a71fc 905 pcmcia_release_configuration(p_dev);
fd238232
DB		 906 pcmcia_release_io(p_dev, &p_dev->io);
907 pcmcia_release_irq(p_dev, &p_dev->irq);
c1ac0228 908 if (p_dev->win)
fd238232 909 pcmcia_release_window(p_dev->win);
5f2a71fc
DB		 910}
911EXPORT_SYMBOL(pcmcia_disable_device);
Linux kernel - Deliverables
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