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-rw-r--r--drivers/pcmcia/pcmcia_resource.c998
1 files changed, 998 insertions, 0 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
new file mode 100644
index 000000000000..c01dc6bf1526
--- /dev/null
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -0,0 +1,998 @@
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
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);
92 s->io[0].Attributes = attr;
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 */
204
205int pcmcia_access_configuration_register(client_handle_t handle,
206 conf_reg_t *reg)
207{
208 struct pcmcia_socket *s;
209 if (CHECK_HANDLE(handle))
210 return CS_BAD_HANDLE;
211 s = SOCKET(handle);
212 return pccard_access_configuration_register(s, handle->Function, reg);
213}
214EXPORT_SYMBOL(pcmcia_access_configuration_register);
215
216
217
218int pccard_get_configuration_info(struct pcmcia_socket *s,
219 unsigned int function,
220 config_info_t *config)
221{
222 config_t *c;
223
224 if (!(s->state & SOCKET_PRESENT))
225 return CS_NO_CARD;
226
227 config->Function = function;
228
229#ifdef CONFIG_CARDBUS
230 if (s->state & SOCKET_CARDBUS) {
231 memset(config, 0, sizeof(config_info_t));
232 config->Vcc = s->socket.Vcc;
233 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
234 config->Option = s->cb_dev->subordinate->number;
235 if (s->state & SOCKET_CARDBUS_CONFIG) {
236 config->Attributes = CONF_VALID_CLIENT;
237 config->IntType = INT_CARDBUS;
238 config->AssignedIRQ = s->irq.AssignedIRQ;
239 if (config->AssignedIRQ)
240 config->Attributes |= CONF_ENABLE_IRQ;
241 config->BasePort1 = s->io[0].BasePort;
242 config->NumPorts1 = s->io[0].NumPorts;
243 }
244 return CS_SUCCESS;
245 }
246#endif
247
248 c = (s->config != NULL) ? &s->config[function] : NULL;
249
250 if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
251 config->Attributes = 0;
252 config->Vcc = s->socket.Vcc;
253 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
254 return CS_SUCCESS;
255 }
256
257 /* !!! This is a hack !!! */
258 memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
259 config->Attributes |= CONF_VALID_CLIENT;
260 config->CardValues = c->CardValues;
261 config->IRQAttributes = c->irq.Attributes;
262 config->AssignedIRQ = s->irq.AssignedIRQ;
263 config->BasePort1 = c->io.BasePort1;
264 config->NumPorts1 = c->io.NumPorts1;
265 config->Attributes1 = c->io.Attributes1;
266 config->BasePort2 = c->io.BasePort2;
267 config->NumPorts2 = c->io.NumPorts2;
268 config->Attributes2 = c->io.Attributes2;
269 config->IOAddrLines = c->io.IOAddrLines;
270
271 return CS_SUCCESS;
272} /* pccard_get_configuration_info */
273
274int pcmcia_get_configuration_info(client_handle_t handle,
275 config_info_t *config)
276{
277 struct pcmcia_socket *s;
278
279 if ((CHECK_HANDLE(handle)) || !config)
280 return CS_BAD_HANDLE;
281 s = SOCKET(handle);
282 if (!s)
283 return CS_BAD_HANDLE;
284 return pccard_get_configuration_info(s, handle->Function, config);
285}
286EXPORT_SYMBOL(pcmcia_get_configuration_info);
287
288
289/** pcmcia_get_window
290 */
291int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
292 int idx, win_req_t *req)
293{
294 window_t *win;
295 int w;
296
297 if (!s || !(s->state & SOCKET_PRESENT))
298 return CS_NO_CARD;
299 for (w = idx; w < MAX_WIN; w++)
300 if (s->state & SOCKET_WIN_REQ(w))
301 break;
302 if (w == MAX_WIN)
303 return CS_NO_MORE_ITEMS;
304 win = &s->win[w];
305 req->Base = win->ctl.res->start;
306 req->Size = win->ctl.res->end - win->ctl.res->start + 1;
307 req->AccessSpeed = win->ctl.speed;
308 req->Attributes = 0;
309 if (win->ctl.flags & MAP_ATTRIB)
310 req->Attributes |= WIN_MEMORY_TYPE_AM;
311 if (win->ctl.flags & MAP_ACTIVE)
312 req->Attributes |= WIN_ENABLE;
313 if (win->ctl.flags & MAP_16BIT)
314 req->Attributes |= WIN_DATA_WIDTH_16;
315 if (win->ctl.flags & MAP_USE_WAIT)
316 req->Attributes |= WIN_USE_WAIT;
317 *handle = win;
318 return CS_SUCCESS;
319} /* pcmcia_get_window */
320EXPORT_SYMBOL(pcmcia_get_window);
321
322
323/** pccard_get_status
324 *
325 * Get the current socket state bits. We don't support the latched
326 * SocketState yet: I haven't seen any point for it.
327 */
328
329int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
330 cs_status_t *status)
331{
332 config_t *c;
333 int val;
334
335 s->ops->get_status(s, &val);
336 status->CardState = status->SocketState = 0;
337 status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
338 status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
339 status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
340 status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
341 if (s->state & SOCKET_SUSPEND)
342 status->CardState |= CS_EVENT_PM_SUSPEND;
343 if (!(s->state & SOCKET_PRESENT))
344 return CS_NO_CARD;
345
346 c = (s->config != NULL) ? &s->config[function] : NULL;
347 if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
348 (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
349 u_char reg;
350 if (c->Present & PRESENT_PIN_REPLACE) {
351 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
352 status->CardState |=
353 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
354 status->CardState |=
355 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
356 status->CardState |=
357 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
358 status->CardState |=
359 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
360 } else {
361 /* No PRR? Then assume we're always ready */
362 status->CardState |= CS_EVENT_READY_CHANGE;
363 }
364 if (c->Present & PRESENT_EXT_STATUS) {
365 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
366 status->CardState |=
367 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
368 }
369 return CS_SUCCESS;
370 }
371 status->CardState |=
372 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
373 status->CardState |=
374 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
375 status->CardState |=
376 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
377 status->CardState |=
378 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
379 return CS_SUCCESS;
380} /* pccard_get_status */
381
382int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
383{
384 struct pcmcia_socket *s;
385 if (CHECK_HANDLE(handle))
386 return CS_BAD_HANDLE;
387 s = SOCKET(handle);
388 return pccard_get_status(s, handle->Function, status);
389}
390EXPORT_SYMBOL(pcmcia_get_status);
391
392
393
394/** pcmcia_get_mem_page
395 *
396 * Change the card address of an already open memory window.
397 */
398int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
399{
400 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
401 return CS_BAD_HANDLE;
402 req->Page = 0;
403 req->CardOffset = win->ctl.card_start;
404 return CS_SUCCESS;
405} /* pcmcia_get_mem_page */
406EXPORT_SYMBOL(pcmcia_get_mem_page);
407
408
409int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
410{
411 struct pcmcia_socket *s;
412 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
413 return CS_BAD_HANDLE;
414 if (req->Page != 0)
415 return CS_BAD_PAGE;
416 s = win->sock;
417 win->ctl.card_start = req->CardOffset;
418 if (s->ops->set_mem_map(s, &win->ctl) != 0)
419 return CS_BAD_OFFSET;
420 return CS_SUCCESS;
421} /* pcmcia_map_mem_page */
422EXPORT_SYMBOL(pcmcia_map_mem_page);
423
424
425/** pcmcia_modify_configuration
426 *
427 * Modify a locked socket configuration
428 */
429int pcmcia_modify_configuration(client_handle_t handle,
430 modconf_t *mod)
431{
432 struct pcmcia_socket *s;
433 config_t *c;
434
435 if (CHECK_HANDLE(handle))
436 return CS_BAD_HANDLE;
437 s = SOCKET(handle);
438 c = CONFIG(handle);
439 if (!(s->state & SOCKET_PRESENT))
440 return CS_NO_CARD;
441 if (!(c->state & CONFIG_LOCKED))
442 return CS_CONFIGURATION_LOCKED;
443
444 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
445 if (mod->Attributes & CONF_ENABLE_IRQ) {
446 c->Attributes |= CONF_ENABLE_IRQ;
447 s->socket.io_irq = s->irq.AssignedIRQ;
448 } else {
449 c->Attributes &= ~CONF_ENABLE_IRQ;
450 s->socket.io_irq = 0;
451 }
452 s->ops->set_socket(s, &s->socket);
453 }
454
455 if (mod->Attributes & CONF_VCC_CHANGE_VALID)
456 return CS_BAD_VCC;
457
458 /* We only allow changing Vpp1 and Vpp2 to the same value */
459 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
460 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
461 if (mod->Vpp1 != mod->Vpp2)
462 return CS_BAD_VPP;
463 c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
464 if (s->ops->set_socket(s, &s->socket))
465 return CS_BAD_VPP;
466 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
467 (mod->Attributes & CONF_VPP2_CHANGE_VALID))
468 return CS_BAD_VPP;
469
470 return CS_SUCCESS;
471} /* modify_configuration */
472EXPORT_SYMBOL(pcmcia_modify_configuration);
473
474
475int pcmcia_release_configuration(client_handle_t handle)
476{
477 pccard_io_map io = { 0, 0, 0, 0, 1 };
478 struct pcmcia_socket *s;
479 int i;
480
481 if (CHECK_HANDLE(handle) ||
482 !(handle->state & CLIENT_CONFIG_LOCKED))
483 return CS_BAD_HANDLE;
484 handle->state &= ~CLIENT_CONFIG_LOCKED;
485 s = SOCKET(handle);
486
487#ifdef CONFIG_CARDBUS
488 if (handle->state & CLIENT_CARDBUS)
489 return CS_SUCCESS;
490#endif
491
492 if (!(handle->state & CLIENT_STALE)) {
493 config_t *c = CONFIG(handle);
494 if (--(s->lock_count) == 0) {
495 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
496 s->socket.Vpp = 0;
497 s->socket.io_irq = 0;
498 s->ops->set_socket(s, &s->socket);
499 }
500 if (c->state & CONFIG_IO_REQ)
501 for (i = 0; i < MAX_IO_WIN; i++) {
502 if (s->io[i].NumPorts == 0)
503 continue;
504 s->io[i].Config--;
505 if (s->io[i].Config != 0)
506 continue;
507 io.map = i;
508 s->ops->set_io_map(s, &io);
509 }
510 c->state &= ~CONFIG_LOCKED;
511 }
512
513 return CS_SUCCESS;
514} /* pcmcia_release_configuration */
515EXPORT_SYMBOL(pcmcia_release_configuration);
516
517
518/** pcmcia_release_io
519 *
520 * Release_io() releases the I/O ranges allocated by a client. This
521 * may be invoked some time after a card ejection has already dumped
522 * the actual socket configuration, so if the client is "stale", we
523 * don't bother checking the port ranges against the current socket
524 * values.
525 */
526int pcmcia_release_io(client_handle_t handle, io_req_t *req)
527{
528 struct pcmcia_socket *s;
529
530 if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IO_REQ))
531 return CS_BAD_HANDLE;
532 handle->state &= ~CLIENT_IO_REQ;
533 s = SOCKET(handle);
534
535#ifdef CONFIG_CARDBUS
536 if (handle->state & CLIENT_CARDBUS)
537 return CS_SUCCESS;
538#endif
539
540 if (!(handle->state & CLIENT_STALE)) {
541 config_t *c = CONFIG(handle);
542 if (c->state & CONFIG_LOCKED)
543 return CS_CONFIGURATION_LOCKED;
544 if ((c->io.BasePort1 != req->BasePort1) ||
545 (c->io.NumPorts1 != req->NumPorts1) ||
546 (c->io.BasePort2 != req->BasePort2) ||
547 (c->io.NumPorts2 != req->NumPorts2))
548 return CS_BAD_ARGS;
549 c->state &= ~CONFIG_IO_REQ;
550 }
551
552 release_io_space(s, req->BasePort1, req->NumPorts1);
553 if (req->NumPorts2)
554 release_io_space(s, req->BasePort2, req->NumPorts2);
555
556 return CS_SUCCESS;
557} /* pcmcia_release_io */
558EXPORT_SYMBOL(pcmcia_release_io);
559
560
561int pcmcia_release_irq(client_handle_t handle, irq_req_t *req)
562{
563 struct pcmcia_socket *s;
564 if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IRQ_REQ))
565 return CS_BAD_HANDLE;
566 handle->state &= ~CLIENT_IRQ_REQ;
567 s = SOCKET(handle);
568
569 if (!(handle->state & CLIENT_STALE)) {
570 config_t *c = CONFIG(handle);
571 if (c->state & CONFIG_LOCKED)
572 return CS_CONFIGURATION_LOCKED;
573 if (c->irq.Attributes != req->Attributes)
574 return CS_BAD_ATTRIBUTE;
575 if (s->irq.AssignedIRQ != req->AssignedIRQ)
576 return CS_BAD_IRQ;
577 if (--s->irq.Config == 0) {
578 c->state &= ~CONFIG_IRQ_REQ;
579 s->irq.AssignedIRQ = 0;
580 }
581 }
582
583 if (req->Attributes & IRQ_HANDLE_PRESENT) {
584 free_irq(req->AssignedIRQ, req->Instance);
585 }
586
587#ifdef CONFIG_PCMCIA_PROBE
588 pcmcia_used_irq[req->AssignedIRQ]--;
589#endif
590
591 return CS_SUCCESS;
592} /* pcmcia_release_irq */
593EXPORT_SYMBOL(pcmcia_release_irq);
594
595
596int pcmcia_release_window(window_handle_t win)
597{
598 struct pcmcia_socket *s;
599
600 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
601 return CS_BAD_HANDLE;
602 s = win->sock;
603 if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
604 return CS_BAD_HANDLE;
605
606 /* Shut down memory window */
607 win->ctl.flags &= ~MAP_ACTIVE;
608 s->ops->set_mem_map(s, &win->ctl);
609 s->state &= ~SOCKET_WIN_REQ(win->index);
610
611 /* Release system memory */
612 if (win->ctl.res) {
613 release_resource(win->ctl.res);
614 kfree(win->ctl.res);
615 win->ctl.res = NULL;
616 }
617 win->handle->state &= ~CLIENT_WIN_REQ(win->index);
618
619 win->magic = 0;
620
621 return CS_SUCCESS;
622} /* pcmcia_release_window */
623EXPORT_SYMBOL(pcmcia_release_window);
624
625
626int pcmcia_request_configuration(client_handle_t handle,
627 config_req_t *req)
628{
629 int i;
630 u_int base;
631 struct pcmcia_socket *s;
632 config_t *c;
633 pccard_io_map iomap;
634
635 if (CHECK_HANDLE(handle))
636 return CS_BAD_HANDLE;
637 s = SOCKET(handle);
638 if (!(s->state & SOCKET_PRESENT))
639 return CS_NO_CARD;
640
641#ifdef CONFIG_CARDBUS
642 if (handle->state & CLIENT_CARDBUS)
643 return CS_UNSUPPORTED_MODE;
644#endif
645
646 if (req->IntType & INT_CARDBUS)
647 return CS_UNSUPPORTED_MODE;
648 c = CONFIG(handle);
649 if (c->state & CONFIG_LOCKED)
650 return CS_CONFIGURATION_LOCKED;
651
652 /* Do power control. We don't allow changes in Vcc. */
653 if (s->socket.Vcc != req->Vcc)
654 return CS_BAD_VCC;
655 if (req->Vpp1 != req->Vpp2)
656 return CS_BAD_VPP;
657 s->socket.Vpp = req->Vpp1;
658 if (s->ops->set_socket(s, &s->socket))
659 return CS_BAD_VPP;
660
661 c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1;
662
663 /* Pick memory or I/O card, DMA mode, interrupt */
664 c->IntType = req->IntType;
665 c->Attributes = req->Attributes;
666 if (req->IntType & INT_MEMORY_AND_IO)
667 s->socket.flags |= SS_IOCARD;
668 if (req->IntType & INT_ZOOMED_VIDEO)
669 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
670 if (req->Attributes & CONF_ENABLE_DMA)
671 s->socket.flags |= SS_DMA_MODE;
672 if (req->Attributes & CONF_ENABLE_SPKR)
673 s->socket.flags |= SS_SPKR_ENA;
674 if (req->Attributes & CONF_ENABLE_IRQ)
675 s->socket.io_irq = s->irq.AssignedIRQ;
676 else
677 s->socket.io_irq = 0;
678 s->ops->set_socket(s, &s->socket);
679 s->lock_count++;
680
681 /* Set up CIS configuration registers */
682 base = c->ConfigBase = req->ConfigBase;
683 c->Present = c->CardValues = req->Present;
684 if (req->Present & PRESENT_COPY) {
685 c->Copy = req->Copy;
686 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
687 }
688 if (req->Present & PRESENT_OPTION) {
689 if (s->functions == 1) {
690 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
691 } else {
692 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
693 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
694 if (req->Present & PRESENT_IOBASE_0)
695 c->Option |= COR_ADDR_DECODE;
696 }
697 if (c->state & CONFIG_IRQ_REQ)
698 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
699 c->Option |= COR_LEVEL_REQ;
700 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
701 mdelay(40);
702 }
703 if (req->Present & PRESENT_STATUS) {
704 c->Status = req->Status;
705 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
706 }
707 if (req->Present & PRESENT_PIN_REPLACE) {
708 c->Pin = req->Pin;
709 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
710 }
711 if (req->Present & PRESENT_EXT_STATUS) {
712 c->ExtStatus = req->ExtStatus;
713 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
714 }
715 if (req->Present & PRESENT_IOBASE_0) {
716 u_char b = c->io.BasePort1 & 0xff;
717 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
718 b = (c->io.BasePort1 >> 8) & 0xff;
719 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
720 }
721 if (req->Present & PRESENT_IOSIZE) {
722 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
723 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
724 }
725
726 /* Configure I/O windows */
727 if (c->state & CONFIG_IO_REQ) {
728 iomap.speed = io_speed;
729 for (i = 0; i < MAX_IO_WIN; i++)
730 if (s->io[i].NumPorts != 0) {
731 iomap.map = i;
732 iomap.flags = MAP_ACTIVE;
733 switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
734 case IO_DATA_PATH_WIDTH_16:
735 iomap.flags |= MAP_16BIT; break;
736 case IO_DATA_PATH_WIDTH_AUTO:
737 iomap.flags |= MAP_AUTOSZ; break;
738 default:
739 break;
740 }
741 iomap.start = s->io[i].BasePort;
742 iomap.stop = iomap.start + s->io[i].NumPorts - 1;
743 s->ops->set_io_map(s, &iomap);
744 s->io[i].Config++;
745 }
746 }
747
748 c->state |= CONFIG_LOCKED;
749 handle->state |= CLIENT_CONFIG_LOCKED;
750 return CS_SUCCESS;
751} /* pcmcia_request_configuration */
752EXPORT_SYMBOL(pcmcia_request_configuration);
753
754
755/** pcmcia_request_io
756 *
757 * Request_io() reserves ranges of port addresses for a socket.
758 * I have not implemented range sharing or alias addressing.
759 */
760int pcmcia_request_io(client_handle_t handle, io_req_t *req)
761{
762 struct pcmcia_socket *s;
763 config_t *c;
764
765 if (CHECK_HANDLE(handle))
766 return CS_BAD_HANDLE;
767 s = SOCKET(handle);
768 if (!(s->state & SOCKET_PRESENT))
769 return CS_NO_CARD;
770
771 if (handle->state & CLIENT_CARDBUS) {
772#ifdef CONFIG_CARDBUS
773 handle->state |= CLIENT_IO_REQ;
774 return CS_SUCCESS;
775#else
776 return CS_UNSUPPORTED_FUNCTION;
777#endif
778 }
779
780 if (!req)
781 return CS_UNSUPPORTED_MODE;
782 c = CONFIG(handle);
783 if (c->state & CONFIG_LOCKED)
784 return CS_CONFIGURATION_LOCKED;
785 if (c->state & CONFIG_IO_REQ)
786 return CS_IN_USE;
787 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
788 return CS_BAD_ATTRIBUTE;
789 if ((req->NumPorts2 > 0) &&
790 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
791 return CS_BAD_ATTRIBUTE;
792
793 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
794 req->NumPorts1, req->IOAddrLines))
795 return CS_IN_USE;
796
797 if (req->NumPorts2) {
798 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
799 req->NumPorts2, req->IOAddrLines)) {
800 release_io_space(s, req->BasePort1, req->NumPorts1);
801 return CS_IN_USE;
802 }
803 }
804
805 c->io = *req;
806 c->state |= CONFIG_IO_REQ;
807 handle->state |= CLIENT_IO_REQ;
808 return CS_SUCCESS;
809} /* pcmcia_request_io */
810EXPORT_SYMBOL(pcmcia_request_io);
811
812
813/** pcmcia_request_irq
814 *
815 * Request_irq() reserves an irq for this client.
816 *
817 * Also, since Linux only reserves irq's when they are actually
818 * hooked, we don't guarantee that an irq will still be available
819 * when the configuration is locked. Now that I think about it,
820 * there might be a way to fix this using a dummy handler.
821 */
822
823#ifdef CONFIG_PCMCIA_PROBE
824static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
825{
826 return IRQ_NONE;
827}
828#endif
829
830int pcmcia_request_irq(client_handle_t handle, irq_req_t *req)
831{
832 struct pcmcia_socket *s;
833 config_t *c;
834 int ret = CS_IN_USE, irq = 0;
835 struct pcmcia_device *p_dev = handle_to_pdev(handle);
836
837 if (CHECK_HANDLE(handle))
838 return CS_BAD_HANDLE;
839 s = SOCKET(handle);
840 if (!(s->state & SOCKET_PRESENT))
841 return CS_NO_CARD;
842 c = CONFIG(handle);
843 if (c->state & CONFIG_LOCKED)
844 return CS_CONFIGURATION_LOCKED;
845 if (c->state & CONFIG_IRQ_REQ)
846 return CS_IN_USE;
847
848#ifdef CONFIG_PCMCIA_PROBE
849 if (s->irq.AssignedIRQ != 0) {
850 /* If the interrupt is already assigned, it must be the same */
851 irq = s->irq.AssignedIRQ;
852 } else {
853 int try;
854 u32 mask = s->irq_mask;
855 void *data = NULL;
856
857 for (try = 0; try < 64; try++) {
858 irq = try % 32;
859
860 /* marked as available by driver, and not blocked by userspace? */
861 if (!((mask >> irq) & 1))
862 continue;
863
864 /* avoid an IRQ which is already used by a PCMCIA card */
865 if ((try < 32) && pcmcia_used_irq[irq])
866 continue;
867
868 /* register the correct driver, if possible, of check whether
869 * registering a dummy handle works, i.e. if the IRQ isn't
870 * marked as used by the kernel resource management core */
871 ret = request_irq(irq,
872 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
873 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
874 (s->functions > 1) ||
875 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
876 p_dev->dev.bus_id,
877 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
878 if (!ret) {
879 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
880 free_irq(irq, data);
881 break;
882 }
883 }
884 }
885#endif
886 if (ret) {
887 if (!s->pci_irq)
888 return ret;
889 irq = s->pci_irq;
890 }
891
892 if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
893 if (request_irq(irq, req->Handler,
894 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
895 (s->functions > 1) ||
896 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
897 p_dev->dev.bus_id, req->Instance))
898 return CS_IN_USE;
899 }
900
901 c->irq.Attributes = req->Attributes;
902 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
903 s->irq.Config++;
904
905 c->state |= CONFIG_IRQ_REQ;
906 handle->state |= CLIENT_IRQ_REQ;
907
908#ifdef CONFIG_PCMCIA_PROBE
909 pcmcia_used_irq[irq]++;
910#endif
911
912 return CS_SUCCESS;
913} /* pcmcia_request_irq */
914EXPORT_SYMBOL(pcmcia_request_irq);
915
916
917/** pcmcia_request_window
918 *
919 * Request_window() establishes a mapping between card memory space
920 * and system memory space.
921 */
922int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh)
923{
924 struct pcmcia_socket *s;
925 window_t *win;
926 u_long align;
927 int w;
928
929 if (CHECK_HANDLE(*handle))
930 return CS_BAD_HANDLE;
931 s = (*handle)->Socket;
932 if (!(s->state & SOCKET_PRESENT))
933 return CS_NO_CARD;
934 if (req->Attributes & (WIN_PAGED | WIN_SHARED))
935 return CS_BAD_ATTRIBUTE;
936
937 /* Window size defaults to smallest available */
938 if (req->Size == 0)
939 req->Size = s->map_size;
940 align = (((s->features & SS_CAP_MEM_ALIGN) ||
941 (req->Attributes & WIN_STRICT_ALIGN)) ?
942 req->Size : s->map_size);
943 if (req->Size & (s->map_size-1))
944 return CS_BAD_SIZE;
945 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
946 (req->Base & (align-1)))
947 return CS_BAD_BASE;
948 if (req->Base)
949 align = 0;
950
951 /* Allocate system memory window */
952 for (w = 0; w < MAX_WIN; w++)
953 if (!(s->state & SOCKET_WIN_REQ(w))) break;
954 if (w == MAX_WIN)
955 return CS_OUT_OF_RESOURCE;
956
957 win = &s->win[w];
958 win->magic = WINDOW_MAGIC;
959 win->index = w;
960 win->handle = *handle;
961 win->sock = s;
962
963 if (!(s->features & SS_CAP_STATIC_MAP)) {
964 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
965 (req->Attributes & WIN_MAP_BELOW_1MB), s);
966 if (!win->ctl.res)
967 return CS_IN_USE;
968 }
969 (*handle)->state |= CLIENT_WIN_REQ(w);
970
971 /* Configure the socket controller */
972 win->ctl.map = w+1;
973 win->ctl.flags = 0;
974 win->ctl.speed = req->AccessSpeed;
975 if (req->Attributes & WIN_MEMORY_TYPE)
976 win->ctl.flags |= MAP_ATTRIB;
977 if (req->Attributes & WIN_ENABLE)
978 win->ctl.flags |= MAP_ACTIVE;
979 if (req->Attributes & WIN_DATA_WIDTH_16)
980 win->ctl.flags |= MAP_16BIT;
981 if (req->Attributes & WIN_USE_WAIT)
982 win->ctl.flags |= MAP_USE_WAIT;
983 win->ctl.card_start = 0;
984 if (s->ops->set_mem_map(s, &win->ctl) != 0)
985 return CS_BAD_ARGS;
986 s->state |= SOCKET_WIN_REQ(w);
987
988 /* Return window handle */
989 if (s->features & SS_CAP_STATIC_MAP) {
990 req->Base = win->ctl.static_start;
991 } else {
992 req->Base = win->ctl.res->start;
993 }
994 *wh = win;
995
996 return CS_SUCCESS;
997} /* pcmcia_request_window */
998EXPORT_SYMBOL(pcmcia_request_window);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 17:04:30 -0500