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[PATCH] pcmcia: remove client_t usage
[mirror_ubuntu-artful-kernel.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
17#include <linux/config.h>
18#include <linux/module.h>
19#include <linux/kernel.h>
20#include <linux/interrupt.h>
21#include <linux/delay.h>
22#include <linux/pci.h>
23#include <linux/device.h>
24
25#define IN_CARD_SERVICES
26#include <pcmcia/version.h>
27#include <pcmcia/cs_types.h>
28#include <pcmcia/ss.h>
29#include <pcmcia/cs.h>
30#include <pcmcia/bulkmem.h>
31#include <pcmcia/cistpl.h>
32#include <pcmcia/cisreg.h>
33#include <pcmcia/ds.h>
34
35#include "cs_internal.h"
36#include "ds_internal.h"
37
38
1a8d4663
DB		 39/* Access speed for IO windows */
40static int io_speed = 0;
41module_param(io_speed, int, 0444);
42
43
44#ifdef CONFIG_PCMCIA_PROBE
45/* mask of IRQs already reserved by other cards, we should avoid using them */
46static u8 pcmcia_used_irq[NR_IRQS];
47#endif
48
49
50#ifdef DEBUG
51extern int ds_pc_debug;
52#define cs_socket_name(skt) ((skt)->dev.class_id)
53
54#define ds_dbg(skt, lvl, fmt, arg...) do { \
55 if (ds_pc_debug >= lvl) \
56 printk(KERN_DEBUG "pcmcia_resource: %s: " fmt, \
57 cs_socket_name(skt) , ## arg); \
58} while (0)
59#else
60#define ds_dbg(lvl, fmt, arg...) do { } while (0)
61#endif
62
63
64
65/** alloc_io_space
66 *
67 * Special stuff for managing IO windows, because they are scarce
68 */
69
70static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base,
71 ioaddr_t num, u_int lines)
72{
73 int i;
74 kio_addr_t try, align;
75
76 align = (*base) ? (lines ? 1<<lines : 0) : 1;
77 if (align && (align < num)) {
78 if (*base) {
79 ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n",
80 num, align);
81 align = 0;
82 } else
83 while (align && (align < num)) align <<= 1;
84 }
85 if (*base & ~(align-1)) {
86 ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n",
87 *base, align);
88 align = 0;
89 }
90 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
91 *base = s->io_offset | (*base & 0x0fff);
57b6281c 92 s->io[0].Attributes = attr;
1a8d4663
DB		 93 return 0;
94 }
95 /* Check for an already-allocated window that must conflict with
96 * what was asked for. It is a hack because it does not catch all
97 * potential conflicts, just the most obvious ones.
98 */
99 for (i = 0; i < MAX_IO_WIN; i++)
100 if ((s->io[i].NumPorts != 0) &&
101 ((s->io[i].BasePort & (align-1)) == *base))
102 return 1;
103 for (i = 0; i < MAX_IO_WIN; i++) {
104 if (s->io[i].NumPorts == 0) {
105 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
106 if (s->io[i].res) {
107 s->io[i].Attributes = attr;
108 s->io[i].BasePort = *base = s->io[i].res->start;
109 s->io[i].NumPorts = s->io[i].InUse = num;
110 break;
111 } else
112 return 1;
113 } else if (s->io[i].Attributes != attr)
114 continue;
115 /* Try to extend top of window */
116 try = s->io[i].BasePort + s->io[i].NumPorts;
117 if ((*base == 0) || (*base == try))
118 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
119 s->io[i].res->end + num, s) == 0) {
120 *base = try;
121 s->io[i].NumPorts += num;
122 s->io[i].InUse += num;
123 break;
124 }
125 /* Try to extend bottom of window */
126 try = s->io[i].BasePort - num;
127 if ((*base == 0) || (*base == try))
128 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
129 s->io[i].res->end, s) == 0) {
130 s->io[i].BasePort = *base = try;
131 s->io[i].NumPorts += num;
132 s->io[i].InUse += num;
133 break;
134 }
135 }
136 return (i == MAX_IO_WIN);
137} /* alloc_io_space */
138
139
140static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
141 ioaddr_t num)
142{
143 int i;
144
145 for (i = 0; i < MAX_IO_WIN; i++) {
146 if ((s->io[i].BasePort <= base) &&
147 (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) {
148 s->io[i].InUse -= num;
149 /* Free the window if no one else is using it */
150 if (s->io[i].InUse == 0) {
151 s->io[i].NumPorts = 0;
152 release_resource(s->io[i].res);
153 kfree(s->io[i].res);
154 s->io[i].res = NULL;
155 }
156 }
157 }
158} /* release_io_space */
159
160
161/** pccard_access_configuration_register
162 *
163 * Access_configuration_register() reads and writes configuration
164 * registers in attribute memory. Memory window 0 is reserved for
165 * this and the tuple reading services.
166 */
167
168int pccard_access_configuration_register(struct pcmcia_socket *s,
169 unsigned int function,
170 conf_reg_t *reg)
171{
172 config_t *c;
173 int addr;
174 u_char val;
175
176 if (!s || !s->config)
177 return CS_NO_CARD;
178
179 c = &s->config[function];
180
181 if (c == NULL)
182 return CS_NO_CARD;
183
184 if (!(c->state & CONFIG_LOCKED))
185 return CS_CONFIGURATION_LOCKED;
186
187 addr = (c->ConfigBase + reg->Offset) >> 1;
188
189 switch (reg->Action) {
190 case CS_READ:
191 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
192 reg->Value = val;
193 break;
194 case CS_WRITE:
195 val = reg->Value;
196 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
197 break;
198 default:
199 return CS_BAD_ARGS;
200 break;
201 }
202 return CS_SUCCESS;
203} /* pccard_access_configuration_register */
3448139b
DB		 204
205int pcmcia_access_configuration_register(client_handle_t handle,
206 conf_reg_t *reg)
207{
208 struct pcmcia_socket *s;
3448139b 209 s = SOCKET(handle);
e12a9a93 210 return pccard_access_configuration_register(s, handle->func, reg);
3448139b
DB		 211}
212EXPORT_SYMBOL(pcmcia_access_configuration_register);
213
1a8d4663
DB		 214
215
216int pccard_get_configuration_info(struct pcmcia_socket *s,
217 unsigned int function,
218 config_info_t *config)
219{
220 config_t *c;
221
222 if (!(s->state & SOCKET_PRESENT))
223 return CS_NO_CARD;
224
225 config->Function = function;
226
227#ifdef CONFIG_CARDBUS
228 if (s->state & SOCKET_CARDBUS) {
229 memset(config, 0, sizeof(config_info_t));
230 config->Vcc = s->socket.Vcc;
231 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
232 config->Option = s->cb_dev->subordinate->number;
233 if (s->state & SOCKET_CARDBUS_CONFIG) {
234 config->Attributes = CONF_VALID_CLIENT;
235 config->IntType = INT_CARDBUS;
236 config->AssignedIRQ = s->irq.AssignedIRQ;
237 if (config->AssignedIRQ)
238 config->Attributes |= CONF_ENABLE_IRQ;
239 config->BasePort1 = s->io[0].BasePort;
240 config->NumPorts1 = s->io[0].NumPorts;
241 }
242 return CS_SUCCESS;
243 }
244#endif
245
246 c = (s->config != NULL) ? &s->config[function] : NULL;
247
248 if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
249 config->Attributes = 0;
250 config->Vcc = s->socket.Vcc;
251 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
252 return CS_SUCCESS;
253 }
254
255 /* !!! This is a hack !!! */
256 memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
257 config->Attributes |= CONF_VALID_CLIENT;
258 config->CardValues = c->CardValues;
259 config->IRQAttributes = c->irq.Attributes;
260 config->AssignedIRQ = s->irq.AssignedIRQ;
261 config->BasePort1 = c->io.BasePort1;
262 config->NumPorts1 = c->io.NumPorts1;
263 config->Attributes1 = c->io.Attributes1;
264 config->BasePort2 = c->io.BasePort2;
265 config->NumPorts2 = c->io.NumPorts2;
266 config->Attributes2 = c->io.Attributes2;
267 config->IOAddrLines = c->io.IOAddrLines;
268
269 return CS_SUCCESS;
270} /* pccard_get_configuration_info */
1a8d4663 271
3448139b
DB		 272int pcmcia_get_configuration_info(client_handle_t handle,
273 config_info_t *config)
1a8d4663 274{
3448139b
DB		 275 struct pcmcia_socket *s;
276
e12a9a93 277 if (!config)
3448139b
DB		 278 return CS_BAD_HANDLE;
279 s = SOCKET(handle);
280 if (!s)
281 return CS_BAD_HANDLE;
e12a9a93 282 return pccard_get_configuration_info(s, handle->func, config);
3448139b
DB		 283}
284EXPORT_SYMBOL(pcmcia_get_configuration_info);
1a8d4663
DB		 285
286
287/** pcmcia_get_window
288 */
289int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
290 int idx, win_req_t *req)
291{
292 window_t *win;
293 int w;
294
295 if (!s || !(s->state & SOCKET_PRESENT))
296 return CS_NO_CARD;
297 for (w = idx; w < MAX_WIN; w++)
298 if (s->state & SOCKET_WIN_REQ(w))
299 break;
300 if (w == MAX_WIN)
301 return CS_NO_MORE_ITEMS;
302 win = &s->win[w];
303 req->Base = win->ctl.res->start;
304 req->Size = win->ctl.res->end - win->ctl.res->start + 1;
305 req->AccessSpeed = win->ctl.speed;
306 req->Attributes = 0;
307 if (win->ctl.flags & MAP_ATTRIB)
308 req->Attributes |= WIN_MEMORY_TYPE_AM;
309 if (win->ctl.flags & MAP_ACTIVE)
310 req->Attributes |= WIN_ENABLE;
311 if (win->ctl.flags & MAP_16BIT)
312 req->Attributes |= WIN_DATA_WIDTH_16;
313 if (win->ctl.flags & MAP_USE_WAIT)
314 req->Attributes |= WIN_USE_WAIT;
315 *handle = win;
316 return CS_SUCCESS;
317} /* pcmcia_get_window */
318EXPORT_SYMBOL(pcmcia_get_window);
319
320
321/** pccard_get_status
322 *
323 * Get the current socket state bits. We don't support the latched
324 * SocketState yet: I haven't seen any point for it.
325 */
326
327int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
328 cs_status_t *status)
329{
330 config_t *c;
331 int val;
332
333 s->ops->get_status(s, &val);
334 status->CardState = status->SocketState = 0;
335 status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
336 status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
337 status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
338 status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
339 if (s->state & SOCKET_SUSPEND)
340 status->CardState |= CS_EVENT_PM_SUSPEND;
341 if (!(s->state & SOCKET_PRESENT))
342 return CS_NO_CARD;
343
344 c = (s->config != NULL) ? &s->config[function] : NULL;
345 if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
346 (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
347 u_char reg;
348 if (c->Present & PRESENT_PIN_REPLACE) {
349 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
350 status->CardState |=
351 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
352 status->CardState |=
353 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
354 status->CardState |=
355 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
356 status->CardState |=
357 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
358 } else {
359 /* No PRR? Then assume we're always ready */
360 status->CardState |= CS_EVENT_READY_CHANGE;
361 }
362 if (c->Present & PRESENT_EXT_STATUS) {
363 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
364 status->CardState |=
365 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
366 }
367 return CS_SUCCESS;
368 }
369 status->CardState |=
370 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
371 status->CardState |=
372 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
373 status->CardState |=
374 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
375 status->CardState |=
376 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
377 return CS_SUCCESS;
378} /* pccard_get_status */
3448139b
DB		 379
380int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
381{
382 struct pcmcia_socket *s;
3448139b 383 s = SOCKET(handle);
e12a9a93 384 return pccard_get_status(s, handle->func, status);
3448139b
DB		 385}
386EXPORT_SYMBOL(pcmcia_get_status);
387
1a8d4663
DB		 388
389
390/** pcmcia_get_mem_page
391 *
392 * Change the card address of an already open memory window.
393 */
394int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
395{
396 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
397 return CS_BAD_HANDLE;
398 req->Page = 0;
399 req->CardOffset = win->ctl.card_start;
400 return CS_SUCCESS;
401} /* pcmcia_get_mem_page */
402EXPORT_SYMBOL(pcmcia_get_mem_page);
403
404
405int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
406{
407 struct pcmcia_socket *s;
408 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
409 return CS_BAD_HANDLE;
410 if (req->Page != 0)
411 return CS_BAD_PAGE;
412 s = win->sock;
413 win->ctl.card_start = req->CardOffset;
414 if (s->ops->set_mem_map(s, &win->ctl) != 0)
415 return CS_BAD_OFFSET;
416 return CS_SUCCESS;
417} /* pcmcia_map_mem_page */
418EXPORT_SYMBOL(pcmcia_map_mem_page);
419
420
421/** pcmcia_modify_configuration
422 *
423 * Modify a locked socket configuration
424 */
425int pcmcia_modify_configuration(client_handle_t handle,
426 modconf_t *mod)
427{
428 struct pcmcia_socket *s;
429 config_t *c;
430
1a8d4663
DB		 431 s = SOCKET(handle);
432 c = CONFIG(handle);
433 if (!(s->state & SOCKET_PRESENT))
434 return CS_NO_CARD;
435 if (!(c->state & CONFIG_LOCKED))
436 return CS_CONFIGURATION_LOCKED;
437
438 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
439 if (mod->Attributes & CONF_ENABLE_IRQ) {
440 c->Attributes |= CONF_ENABLE_IRQ;
441 s->socket.io_irq = s->irq.AssignedIRQ;
442 } else {
443 c->Attributes &= ~CONF_ENABLE_IRQ;
444 s->socket.io_irq = 0;
445 }
446 s->ops->set_socket(s, &s->socket);
447 }
448
449 if (mod->Attributes & CONF_VCC_CHANGE_VALID)
450 return CS_BAD_VCC;
451
452 /* We only allow changing Vpp1 and Vpp2 to the same value */
453 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
454 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
455 if (mod->Vpp1 != mod->Vpp2)
456 return CS_BAD_VPP;
457 c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
458 if (s->ops->set_socket(s, &s->socket))
459 return CS_BAD_VPP;
460 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
461 (mod->Attributes & CONF_VPP2_CHANGE_VALID))
462 return CS_BAD_VPP;
463
464 return CS_SUCCESS;
465} /* modify_configuration */
466EXPORT_SYMBOL(pcmcia_modify_configuration);
467
468
469int pcmcia_release_configuration(client_handle_t handle)
470{
471 pccard_io_map io = { 0, 0, 0, 0, 1 };
472 struct pcmcia_socket *s;
473 int i;
474
e12a9a93 475 if (!(handle->state & CLIENT_CONFIG_LOCKED))
1a8d4663
DB		 476 return CS_BAD_HANDLE;
477 handle->state &= ~CLIENT_CONFIG_LOCKED;
478 s = SOCKET(handle);
479
480#ifdef CONFIG_CARDBUS
481 if (handle->state & CLIENT_CARDBUS)
482 return CS_SUCCESS;
483#endif
484
485 if (!(handle->state & CLIENT_STALE)) {
486 config_t *c = CONFIG(handle);
487 if (--(s->lock_count) == 0) {
488 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
489 s->socket.Vpp = 0;
490 s->socket.io_irq = 0;
491 s->ops->set_socket(s, &s->socket);
492 }
493 if (c->state & CONFIG_IO_REQ)
494 for (i = 0; i < MAX_IO_WIN; i++) {
495 if (s->io[i].NumPorts == 0)
496 continue;
497 s->io[i].Config--;
498 if (s->io[i].Config != 0)
499 continue;
500 io.map = i;
501 s->ops->set_io_map(s, &io);
502 }
503 c->state &= ~CONFIG_LOCKED;
504 }
505
506 return CS_SUCCESS;
507} /* pcmcia_release_configuration */
508EXPORT_SYMBOL(pcmcia_release_configuration);
509
510
511/** pcmcia_release_io
512 *
513 * Release_io() releases the I/O ranges allocated by a client. This
514 * may be invoked some time after a card ejection has already dumped
515 * the actual socket configuration, so if the client is "stale", we
516 * don't bother checking the port ranges against the current socket
517 * values.
518 */
519int pcmcia_release_io(client_handle_t handle, io_req_t *req)
520{
521 struct pcmcia_socket *s;
522
e12a9a93 523 if (!(handle->state & CLIENT_IO_REQ))
1a8d4663
DB		 524 return CS_BAD_HANDLE;
525 handle->state &= ~CLIENT_IO_REQ;
526 s = SOCKET(handle);
527
528#ifdef CONFIG_CARDBUS
529 if (handle->state & CLIENT_CARDBUS)
530 return CS_SUCCESS;
531#endif
532
533 if (!(handle->state & CLIENT_STALE)) {
534 config_t *c = CONFIG(handle);
535 if (c->state & CONFIG_LOCKED)
536 return CS_CONFIGURATION_LOCKED;
537 if ((c->io.BasePort1 != req->BasePort1) ||
538 (c->io.NumPorts1 != req->NumPorts1) ||
539 (c->io.BasePort2 != req->BasePort2) ||
540 (c->io.NumPorts2 != req->NumPorts2))
541 return CS_BAD_ARGS;
542 c->state &= ~CONFIG_IO_REQ;
543 }
544
545 release_io_space(s, req->BasePort1, req->NumPorts1);
546 if (req->NumPorts2)
547 release_io_space(s, req->BasePort2, req->NumPorts2);
548
549 return CS_SUCCESS;
550} /* pcmcia_release_io */
551EXPORT_SYMBOL(pcmcia_release_io);
552
553
554int pcmcia_release_irq(client_handle_t handle, irq_req_t *req)
555{
556 struct pcmcia_socket *s;
e12a9a93 557 if (!(handle->state & CLIENT_IRQ_REQ))
1a8d4663
DB		 558 return CS_BAD_HANDLE;
559 handle->state &= ~CLIENT_IRQ_REQ;
560 s = SOCKET(handle);
561
562 if (!(handle->state & CLIENT_STALE)) {
563 config_t *c = CONFIG(handle);
564 if (c->state & CONFIG_LOCKED)
565 return CS_CONFIGURATION_LOCKED;
566 if (c->irq.Attributes != req->Attributes)
567 return CS_BAD_ATTRIBUTE;
568 if (s->irq.AssignedIRQ != req->AssignedIRQ)
569 return CS_BAD_IRQ;
570 if (--s->irq.Config == 0) {
571 c->state &= ~CONFIG_IRQ_REQ;
572 s->irq.AssignedIRQ = 0;
573 }
574 }
575
576 if (req->Attributes & IRQ_HANDLE_PRESENT) {
577 free_irq(req->AssignedIRQ, req->Instance);
578 }
579
580#ifdef CONFIG_PCMCIA_PROBE
581 pcmcia_used_irq[req->AssignedIRQ]--;
582#endif
583
584 return CS_SUCCESS;
585} /* pcmcia_release_irq */
586EXPORT_SYMBOL(pcmcia_release_irq);
587
588
589int pcmcia_release_window(window_handle_t win)
590{
591 struct pcmcia_socket *s;
592
593 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
594 return CS_BAD_HANDLE;
595 s = win->sock;
596 if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
597 return CS_BAD_HANDLE;
598
599 /* Shut down memory window */
600 win->ctl.flags &= ~MAP_ACTIVE;
601 s->ops->set_mem_map(s, &win->ctl);
602 s->state &= ~SOCKET_WIN_REQ(win->index);
603
604 /* Release system memory */
605 if (win->ctl.res) {
606 release_resource(win->ctl.res);
607 kfree(win->ctl.res);
608 win->ctl.res = NULL;
609 }
610 win->handle->state &= ~CLIENT_WIN_REQ(win->index);
611
612 win->magic = 0;
613
614 return CS_SUCCESS;
615} /* pcmcia_release_window */
616EXPORT_SYMBOL(pcmcia_release_window);
617
618
619int pcmcia_request_configuration(client_handle_t handle,
620 config_req_t *req)
621{
622 int i;
623 u_int base;
624 struct pcmcia_socket *s;
625 config_t *c;
626 pccard_io_map iomap;
627
1a8d4663
DB		 628 s = SOCKET(handle);
629 if (!(s->state & SOCKET_PRESENT))
630 return CS_NO_CARD;
631
632#ifdef CONFIG_CARDBUS
633 if (handle->state & CLIENT_CARDBUS)
634 return CS_UNSUPPORTED_MODE;
635#endif
636
637 if (req->IntType & INT_CARDBUS)
638 return CS_UNSUPPORTED_MODE;
639 c = CONFIG(handle);
640 if (c->state & CONFIG_LOCKED)
641 return CS_CONFIGURATION_LOCKED;
642
643 /* Do power control. We don't allow changes in Vcc. */
644 if (s->socket.Vcc != req->Vcc)
645 return CS_BAD_VCC;
646 if (req->Vpp1 != req->Vpp2)
647 return CS_BAD_VPP;
648 s->socket.Vpp = req->Vpp1;
649 if (s->ops->set_socket(s, &s->socket))
650 return CS_BAD_VPP;
651
652 c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1;
653
654 /* Pick memory or I/O card, DMA mode, interrupt */
655 c->IntType = req->IntType;
656 c->Attributes = req->Attributes;
657 if (req->IntType & INT_MEMORY_AND_IO)
658 s->socket.flags |= SS_IOCARD;
659 if (req->IntType & INT_ZOOMED_VIDEO)
660 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
661 if (req->Attributes & CONF_ENABLE_DMA)
662 s->socket.flags |= SS_DMA_MODE;
663 if (req->Attributes & CONF_ENABLE_SPKR)
664 s->socket.flags |= SS_SPKR_ENA;
665 if (req->Attributes & CONF_ENABLE_IRQ)
666 s->socket.io_irq = s->irq.AssignedIRQ;
667 else
668 s->socket.io_irq = 0;
669 s->ops->set_socket(s, &s->socket);
670 s->lock_count++;
671
672 /* Set up CIS configuration registers */
673 base = c->ConfigBase = req->ConfigBase;
674 c->Present = c->CardValues = req->Present;
675 if (req->Present & PRESENT_COPY) {
676 c->Copy = req->Copy;
677 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
678 }
679 if (req->Present & PRESENT_OPTION) {
680 if (s->functions == 1) {
681 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
682 } else {
683 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
684 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
685 if (req->Present & PRESENT_IOBASE_0)
686 c->Option |= COR_ADDR_DECODE;
687 }
688 if (c->state & CONFIG_IRQ_REQ)
689 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
690 c->Option |= COR_LEVEL_REQ;
691 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
692 mdelay(40);
693 }
694 if (req->Present & PRESENT_STATUS) {
695 c->Status = req->Status;
696 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
697 }
698 if (req->Present & PRESENT_PIN_REPLACE) {
699 c->Pin = req->Pin;
700 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
701 }
702 if (req->Present & PRESENT_EXT_STATUS) {
703 c->ExtStatus = req->ExtStatus;
704 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
705 }
706 if (req->Present & PRESENT_IOBASE_0) {
707 u_char b = c->io.BasePort1 & 0xff;
708 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
709 b = (c->io.BasePort1 >> 8) & 0xff;
710 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
711 }
712 if (req->Present & PRESENT_IOSIZE) {
713 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
714 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
715 }
716
717 /* Configure I/O windows */
718 if (c->state & CONFIG_IO_REQ) {
719 iomap.speed = io_speed;
720 for (i = 0; i < MAX_IO_WIN; i++)
721 if (s->io[i].NumPorts != 0) {
722 iomap.map = i;
723 iomap.flags = MAP_ACTIVE;
724 switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
725 case IO_DATA_PATH_WIDTH_16:
726 iomap.flags |= MAP_16BIT; break;
727 case IO_DATA_PATH_WIDTH_AUTO:
728 iomap.flags |= MAP_AUTOSZ; break;
729 default:
730 break;
731 }
732 iomap.start = s->io[i].BasePort;
733 iomap.stop = iomap.start + s->io[i].NumPorts - 1;
734 s->ops->set_io_map(s, &iomap);
735 s->io[i].Config++;
736 }
737 }
738
739 c->state |= CONFIG_LOCKED;
740 handle->state |= CLIENT_CONFIG_LOCKED;
741 return CS_SUCCESS;
742} /* pcmcia_request_configuration */
743EXPORT_SYMBOL(pcmcia_request_configuration);
744
745
746/** pcmcia_request_io
747 *
748 * Request_io() reserves ranges of port addresses for a socket.
749 * I have not implemented range sharing or alias addressing.
750 */
751int pcmcia_request_io(client_handle_t handle, io_req_t *req)
752{
753 struct pcmcia_socket *s;
754 config_t *c;
755
1a8d4663
DB		 756 s = SOCKET(handle);
757 if (!(s->state & SOCKET_PRESENT))
758 return CS_NO_CARD;
759
760 if (handle->state & CLIENT_CARDBUS) {
761#ifdef CONFIG_CARDBUS
762 handle->state |= CLIENT_IO_REQ;
763 return CS_SUCCESS;
764#else
765 return CS_UNSUPPORTED_FUNCTION;
766#endif
767 }
768
769 if (!req)
770 return CS_UNSUPPORTED_MODE;
771 c = CONFIG(handle);
772 if (c->state & CONFIG_LOCKED)
773 return CS_CONFIGURATION_LOCKED;
774 if (c->state & CONFIG_IO_REQ)
775 return CS_IN_USE;
776 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
777 return CS_BAD_ATTRIBUTE;
778 if ((req->NumPorts2 > 0) &&
779 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
780 return CS_BAD_ATTRIBUTE;
781
782 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
783 req->NumPorts1, req->IOAddrLines))
784 return CS_IN_USE;
785
786 if (req->NumPorts2) {
787 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
788 req->NumPorts2, req->IOAddrLines)) {
789 release_io_space(s, req->BasePort1, req->NumPorts1);
790 return CS_IN_USE;
791 }
792 }
793
794 c->io = *req;
795 c->state |= CONFIG_IO_REQ;
796 handle->state |= CLIENT_IO_REQ;
797 return CS_SUCCESS;
798} /* pcmcia_request_io */
799EXPORT_SYMBOL(pcmcia_request_io);
800
801
802/** pcmcia_request_irq
803 *
804 * Request_irq() reserves an irq for this client.
805 *
806 * Also, since Linux only reserves irq's when they are actually
807 * hooked, we don't guarantee that an irq will still be available
808 * when the configuration is locked. Now that I think about it,
809 * there might be a way to fix this using a dummy handler.
810 */
811
812#ifdef CONFIG_PCMCIA_PROBE
813static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
814{
815 return IRQ_NONE;
816}
817#endif
818
819int pcmcia_request_irq(client_handle_t handle, irq_req_t *req)
820{
821 struct pcmcia_socket *s;
822 config_t *c;
823 int ret = CS_IN_USE, irq = 0;
824 struct pcmcia_device *p_dev = handle_to_pdev(handle);
825
1a8d4663
DB		 826 s = SOCKET(handle);
827 if (!(s->state & SOCKET_PRESENT))
828 return CS_NO_CARD;
829 c = CONFIG(handle);
830 if (c->state & CONFIG_LOCKED)
831 return CS_CONFIGURATION_LOCKED;
832 if (c->state & CONFIG_IRQ_REQ)
833 return CS_IN_USE;
834
835#ifdef CONFIG_PCMCIA_PROBE
836 if (s->irq.AssignedIRQ != 0) {
837 /* If the interrupt is already assigned, it must be the same */
838 irq = s->irq.AssignedIRQ;
839 } else {
840 int try;
841 u32 mask = s->irq_mask;
842 void *data = NULL;
843
844 for (try = 0; try < 64; try++) {
845 irq = try % 32;
846
847 /* marked as available by driver, and not blocked by userspace? */
848 if (!((mask >> irq) & 1))
849 continue;
850
851 /* avoid an IRQ which is already used by a PCMCIA card */
852 if ((try < 32) && pcmcia_used_irq[irq])
853 continue;
854
855 /* register the correct driver, if possible, of check whether
856 * registering a dummy handle works, i.e. if the IRQ isn't
857 * marked as used by the kernel resource management core */
858 ret = request_irq(irq,
859 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
860 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
861 (s->functions > 1) ||
862 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
863 p_dev->dev.bus_id,
864 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
865 if (!ret) {
866 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
867 free_irq(irq, data);
868 break;
869 }
870 }
871 }
872#endif
873 if (ret) {
874 if (!s->pci_irq)
875 return ret;
876 irq = s->pci_irq;
877 }
878
879 if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
880 if (request_irq(irq, req->Handler,
881 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
882 (s->functions > 1) ||
883 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
884 p_dev->dev.bus_id, req->Instance))
885 return CS_IN_USE;
886 }
887
888 c->irq.Attributes = req->Attributes;
889 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
890 s->irq.Config++;
891
892 c->state |= CONFIG_IRQ_REQ;
893 handle->state |= CLIENT_IRQ_REQ;
894
895#ifdef CONFIG_PCMCIA_PROBE
896 pcmcia_used_irq[irq]++;
897#endif
898
899 return CS_SUCCESS;
900} /* pcmcia_request_irq */
901EXPORT_SYMBOL(pcmcia_request_irq);
902
903
904/** pcmcia_request_window
905 *
906 * Request_window() establishes a mapping between card memory space
907 * and system memory space.
908 */
909int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh)
910{
911 struct pcmcia_socket *s;
912 window_t *win;
913 u_long align;
914 int w;
915
e12a9a93 916 s = (*handle)->socket;
1a8d4663
DB		 917 if (!(s->state & SOCKET_PRESENT))
918 return CS_NO_CARD;
919 if (req->Attributes & (WIN_PAGED | WIN_SHARED))
920 return CS_BAD_ATTRIBUTE;
921
922 /* Window size defaults to smallest available */
923 if (req->Size == 0)
924 req->Size = s->map_size;
925 align = (((s->features & SS_CAP_MEM_ALIGN) ||
926 (req->Attributes & WIN_STRICT_ALIGN)) ?
927 req->Size : s->map_size);
928 if (req->Size & (s->map_size-1))
929 return CS_BAD_SIZE;
930 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
931 (req->Base & (align-1)))
932 return CS_BAD_BASE;
933 if (req->Base)
934 align = 0;
935
936 /* Allocate system memory window */
937 for (w = 0; w < MAX_WIN; w++)
938 if (!(s->state & SOCKET_WIN_REQ(w))) break;
939 if (w == MAX_WIN)
940 return CS_OUT_OF_RESOURCE;
941
942 win = &s->win[w];
943 win->magic = WINDOW_MAGIC;
944 win->index = w;
945 win->handle = *handle;
946 win->sock = s;
947
948 if (!(s->features & SS_CAP_STATIC_MAP)) {
949 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
950 (req->Attributes & WIN_MAP_BELOW_1MB), s);
951 if (!win->ctl.res)
952 return CS_IN_USE;
953 }
954 (*handle)->state |= CLIENT_WIN_REQ(w);
955
956 /* Configure the socket controller */
957 win->ctl.map = w+1;
958 win->ctl.flags = 0;
959 win->ctl.speed = req->AccessSpeed;
960 if (req->Attributes & WIN_MEMORY_TYPE)
961 win->ctl.flags |= MAP_ATTRIB;
962 if (req->Attributes & WIN_ENABLE)
963 win->ctl.flags |= MAP_ACTIVE;
964 if (req->Attributes & WIN_DATA_WIDTH_16)
965 win->ctl.flags |= MAP_16BIT;
966 if (req->Attributes & WIN_USE_WAIT)
967 win->ctl.flags |= MAP_USE_WAIT;
968 win->ctl.card_start = 0;
969 if (s->ops->set_mem_map(s, &win->ctl) != 0)
970 return CS_BAD_ARGS;
971 s->state |= SOCKET_WIN_REQ(w);
972
973 /* Return window handle */
974 if (s->features & SS_CAP_STATIC_MAP) {
975 req->Base = win->ctl.static_start;
976 } else {
977 req->Base = win->ctl.res->start;
978 }
979 *wh = win;
980
981 return CS_SUCCESS;
982} /* pcmcia_request_window */
983EXPORT_SYMBOL(pcmcia_request_window);
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