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path: root/drivers/pcmcia/pcmcia_resource.c
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Diffstat (limited to 'drivers/pcmcia/pcmcia_resource.c')
-rw-r--r--drivers/pcmcia/pcmcia_resource.c989
1 files changed, 989 insertions, 0 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
new file mode 100644
index 000000000000..cf66b9978942
--- /dev/null
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -0,0 +1,989 @@
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
39static const char *release = "Linux Kernel Card Services";
40
41/* Access speed for IO windows */
42static int io_speed = 0;
43module_param(io_speed, int, 0444);
44
45
46#ifdef CONFIG_PCMCIA_PROBE
47/* mask of IRQs already reserved by other cards, we should avoid using them */
48static u8 pcmcia_used_irq[NR_IRQS];
49#endif
50
51
52#ifdef DEBUG
53extern int ds_pc_debug;
54#define cs_socket_name(skt) ((skt)->dev.class_id)
55
56#define ds_dbg(skt, lvl, fmt, arg...) do { \
57 if (ds_pc_debug >= lvl) \
58 printk(KERN_DEBUG "pcmcia_resource: %s: " fmt, \
59 cs_socket_name(skt) , ## arg); \
60} while (0)
61#else
62#define ds_dbg(lvl, fmt, arg...) do { } while (0)
63#endif
64
65
66
67/** alloc_io_space
68 *
69 * Special stuff for managing IO windows, because they are scarce
70 */
71
72static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base,
73 ioaddr_t num, u_int lines)
74{
75 int i;
76 kio_addr_t try, align;
77
78 align = (*base) ? (lines ? 1<<lines : 0) : 1;
79 if (align && (align < num)) {
80 if (*base) {
81 ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n",
82 num, align);
83 align = 0;
84 } else
85 while (align && (align < num)) align <<= 1;
86 }
87 if (*base & ~(align-1)) {
88 ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n",
89 *base, align);
90 align = 0;
91 }
92 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
93 *base = s->io_offset | (*base & 0x0fff);
94 return 0;
95 }
96 /* Check for an already-allocated window that must conflict with
97 * what was asked for. It is a hack because it does not catch all
98 * potential conflicts, just the most obvious ones.
99 */
100 for (i = 0; i < MAX_IO_WIN; i++)
101 if ((s->io[i].NumPorts != 0) &&
102 ((s->io[i].BasePort & (align-1)) == *base))
103 return 1;
104 for (i = 0; i < MAX_IO_WIN; i++) {
105 if (s->io[i].NumPorts == 0) {
106 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
107 if (s->io[i].res) {
108 s->io[i].Attributes = attr;
109 s->io[i].BasePort = *base = s->io[i].res->start;
110 s->io[i].NumPorts = s->io[i].InUse = num;
111 break;
112 } else
113 return 1;
114 } else if (s->io[i].Attributes != attr)
115 continue;
116 /* Try to extend top of window */
117 try = s->io[i].BasePort + s->io[i].NumPorts;
118 if ((*base == 0) || (*base == try))
119 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
120 s->io[i].res->end + num, s) == 0) {
121 *base = try;
122 s->io[i].NumPorts += num;
123 s->io[i].InUse += num;
124 break;
125 }
126 /* Try to extend bottom of window */
127 try = s->io[i].BasePort - num;
128 if ((*base == 0) || (*base == try))
129 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
130 s->io[i].res->end, s) == 0) {
131 s->io[i].BasePort = *base = try;
132 s->io[i].NumPorts += num;
133 s->io[i].InUse += num;
134 break;
135 }
136 }
137 return (i == MAX_IO_WIN);
138} /* alloc_io_space */
139
140
141static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
142 ioaddr_t num)
143{
144 int i;
145
146 for (i = 0; i < MAX_IO_WIN; i++) {
147 if ((s->io[i].BasePort <= base) &&
148 (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) {
149 s->io[i].InUse -= num;
150 /* Free the window if no one else is using it */
151 if (s->io[i].InUse == 0) {
152 s->io[i].NumPorts = 0;
153 release_resource(s->io[i].res);
154 kfree(s->io[i].res);
155 s->io[i].res = NULL;
156 }
157 }
158 }
159} /* release_io_space */
160
161
162/** pccard_access_configuration_register
163 *
164 * Access_configuration_register() reads and writes configuration
165 * registers in attribute memory. Memory window 0 is reserved for
166 * this and the tuple reading services.
167 */
168
169int pccard_access_configuration_register(struct pcmcia_socket *s,
170 unsigned int function,
171 conf_reg_t *reg)
172{
173 config_t *c;
174 int addr;
175 u_char val;
176
177 if (!s || !s->config)
178 return CS_NO_CARD;
179
180 c = &s->config[function];
181
182 if (c == NULL)
183 return CS_NO_CARD;
184
185 if (!(c->state & CONFIG_LOCKED))
186 return CS_CONFIGURATION_LOCKED;
187
188 addr = (c->ConfigBase + reg->Offset) >> 1;
189
190 switch (reg->Action) {
191 case CS_READ:
192 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
193 reg->Value = val;
194 break;
195 case CS_WRITE:
196 val = reg->Value;
197 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
198 break;
199 default:
200 return CS_BAD_ARGS;
201 break;
202 }
203 return CS_SUCCESS;
204} /* pccard_access_configuration_register */
205EXPORT_SYMBOL(pccard_access_configuration_register);
206
207
208int pccard_get_configuration_info(struct pcmcia_socket *s,
209 unsigned int function,
210 config_info_t *config)
211{
212 config_t *c;
213
214 if (!(s->state & SOCKET_PRESENT))
215 return CS_NO_CARD;
216
217 config->Function = function;
218
219#ifdef CONFIG_CARDBUS
220 if (s->state & SOCKET_CARDBUS) {
221 memset(config, 0, sizeof(config_info_t));
222 config->Vcc = s->socket.Vcc;
223 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
224 config->Option = s->cb_dev->subordinate->number;
225 if (s->state & SOCKET_CARDBUS_CONFIG) {
226 config->Attributes = CONF_VALID_CLIENT;
227 config->IntType = INT_CARDBUS;
228 config->AssignedIRQ = s->irq.AssignedIRQ;
229 if (config->AssignedIRQ)
230 config->Attributes |= CONF_ENABLE_IRQ;
231 config->BasePort1 = s->io[0].BasePort;
232 config->NumPorts1 = s->io[0].NumPorts;
233 }
234 return CS_SUCCESS;
235 }
236#endif
237
238 c = (s->config != NULL) ? &s->config[function] : NULL;
239
240 if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
241 config->Attributes = 0;
242 config->Vcc = s->socket.Vcc;
243 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
244 return CS_SUCCESS;
245 }
246
247 /* !!! This is a hack !!! */
248 memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
249 config->Attributes |= CONF_VALID_CLIENT;
250 config->CardValues = c->CardValues;
251 config->IRQAttributes = c->irq.Attributes;
252 config->AssignedIRQ = s->irq.AssignedIRQ;
253 config->BasePort1 = c->io.BasePort1;
254 config->NumPorts1 = c->io.NumPorts1;
255 config->Attributes1 = c->io.Attributes1;
256 config->BasePort2 = c->io.BasePort2;
257 config->NumPorts2 = c->io.NumPorts2;
258 config->Attributes2 = c->io.Attributes2;
259 config->IOAddrLines = c->io.IOAddrLines;
260
261 return CS_SUCCESS;
262} /* pccard_get_configuration_info */
263EXPORT_SYMBOL(pccard_get_configuration_info);
264
265
266/** pcmcia_get_card_services_info
267 *
268 * Return information about this version of Card Services
269 */
270
271int pcmcia_get_card_services_info(servinfo_t *info)
272{
273 unsigned int socket_count = 0;
274 struct list_head *tmp;
275 info->Signature[0] = 'C';
276 info->Signature[1] = 'S';
277 down_read(&pcmcia_socket_list_rwsem);
278 list_for_each(tmp, &pcmcia_socket_list)
279 socket_count++;
280 up_read(&pcmcia_socket_list_rwsem);
281 info->Count = socket_count;
282 info->Revision = CS_RELEASE_CODE;
283 info->CSLevel = 0x0210;
284 info->VendorString = (char *)release;
285 return CS_SUCCESS;
286} /* get_card_services_info */
287EXPORT_SYMBOL(pcmcia_get_card_services_info);
288
289
290/** pcmcia_get_window
291 */
292int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
293 int idx, win_req_t *req)
294{
295 window_t *win;
296 int w;
297
298 if (!s || !(s->state & SOCKET_PRESENT))
299 return CS_NO_CARD;
300 for (w = idx; w < MAX_WIN; w++)
301 if (s->state & SOCKET_WIN_REQ(w))
302 break;
303 if (w == MAX_WIN)
304 return CS_NO_MORE_ITEMS;
305 win = &s->win[w];
306 req->Base = win->ctl.res->start;
307 req->Size = win->ctl.res->end - win->ctl.res->start + 1;
308 req->AccessSpeed = win->ctl.speed;
309 req->Attributes = 0;
310 if (win->ctl.flags & MAP_ATTRIB)
311 req->Attributes |= WIN_MEMORY_TYPE_AM;
312 if (win->ctl.flags & MAP_ACTIVE)
313 req->Attributes |= WIN_ENABLE;
314 if (win->ctl.flags & MAP_16BIT)
315 req->Attributes |= WIN_DATA_WIDTH_16;
316 if (win->ctl.flags & MAP_USE_WAIT)
317 req->Attributes |= WIN_USE_WAIT;
318 *handle = win;
319 return CS_SUCCESS;
320} /* pcmcia_get_window */
321EXPORT_SYMBOL(pcmcia_get_window);
322
323
324/** pccard_get_status
325 *
326 * Get the current socket state bits. We don't support the latched
327 * SocketState yet: I haven't seen any point for it.
328 */
329
330int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
331 cs_status_t *status)
332{
333 config_t *c;
334 int val;
335
336 s->ops->get_status(s, &val);
337 status->CardState = status->SocketState = 0;
338 status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
339 status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
340 status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
341 status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
342 if (s->state & SOCKET_SUSPEND)
343 status->CardState |= CS_EVENT_PM_SUSPEND;
344 if (!(s->state & SOCKET_PRESENT))
345 return CS_NO_CARD;
346
347 c = (s->config != NULL) ? &s->config[function] : NULL;
348 if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
349 (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
350 u_char reg;
351 if (c->Present & PRESENT_PIN_REPLACE) {
352 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
353 status->CardState |=
354 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
355 status->CardState |=
356 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
357 status->CardState |=
358 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
359 status->CardState |=
360 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
361 } else {
362 /* No PRR? Then assume we're always ready */
363 status->CardState |= CS_EVENT_READY_CHANGE;
364 }
365 if (c->Present & PRESENT_EXT_STATUS) {
366 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
367 status->CardState |=
368 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
369 }
370 return CS_SUCCESS;
371 }
372 status->CardState |=
373 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
374 status->CardState |=
375 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
376 status->CardState |=
377 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
378 status->CardState |=
379 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
380 return CS_SUCCESS;
381} /* pccard_get_status */
382EXPORT_SYMBOL(pccard_get_status);
383
384
385/** pcmcia_get_mem_page
386 *
387 * Change the card address of an already open memory window.
388 */
389int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
390{
391 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
392 return CS_BAD_HANDLE;
393 req->Page = 0;
394 req->CardOffset = win->ctl.card_start;
395 return CS_SUCCESS;
396} /* pcmcia_get_mem_page */
397EXPORT_SYMBOL(pcmcia_get_mem_page);
398
399
400int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
401{
402 struct pcmcia_socket *s;
403 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
404 return CS_BAD_HANDLE;
405 if (req->Page != 0)
406 return CS_BAD_PAGE;
407 s = win->sock;
408 win->ctl.card_start = req->CardOffset;
409 if (s->ops->set_mem_map(s, &win->ctl) != 0)
410 return CS_BAD_OFFSET;
411 return CS_SUCCESS;
412} /* pcmcia_map_mem_page */
413EXPORT_SYMBOL(pcmcia_map_mem_page);
414
415
416/** pcmcia_modify_configuration
417 *
418 * Modify a locked socket configuration
419 */
420int pcmcia_modify_configuration(client_handle_t handle,
421 modconf_t *mod)
422{
423 struct pcmcia_socket *s;
424 config_t *c;
425
426 if (CHECK_HANDLE(handle))
427 return CS_BAD_HANDLE;
428 s = SOCKET(handle);
429 c = CONFIG(handle);
430 if (!(s->state & SOCKET_PRESENT))
431 return CS_NO_CARD;
432 if (!(c->state & CONFIG_LOCKED))
433 return CS_CONFIGURATION_LOCKED;
434
435 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
436 if (mod->Attributes & CONF_ENABLE_IRQ) {
437 c->Attributes |= CONF_ENABLE_IRQ;
438 s->socket.io_irq = s->irq.AssignedIRQ;
439 } else {
440 c->Attributes &= ~CONF_ENABLE_IRQ;
441 s->socket.io_irq = 0;
442 }
443 s->ops->set_socket(s, &s->socket);
444 }
445
446 if (mod->Attributes & CONF_VCC_CHANGE_VALID)
447 return CS_BAD_VCC;
448
449 /* We only allow changing Vpp1 and Vpp2 to the same value */
450 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
451 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
452 if (mod->Vpp1 != mod->Vpp2)
453 return CS_BAD_VPP;
454 c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
455 if (s->ops->set_socket(s, &s->socket))
456 return CS_BAD_VPP;
457 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
458 (mod->Attributes & CONF_VPP2_CHANGE_VALID))
459 return CS_BAD_VPP;
460
461 return CS_SUCCESS;
462} /* modify_configuration */
463EXPORT_SYMBOL(pcmcia_modify_configuration);
464
465
466int pcmcia_release_configuration(client_handle_t handle)
467{
468 pccard_io_map io = { 0, 0, 0, 0, 1 };
469 struct pcmcia_socket *s;
470 int i;
471
472 if (CHECK_HANDLE(handle) ||
473 !(handle->state & CLIENT_CONFIG_LOCKED))
474 return CS_BAD_HANDLE;
475 handle->state &= ~CLIENT_CONFIG_LOCKED;
476 s = SOCKET(handle);
477
478#ifdef CONFIG_CARDBUS
479 if (handle->state & CLIENT_CARDBUS)
480 return CS_SUCCESS;
481#endif
482
483 if (!(handle->state & CLIENT_STALE)) {
484 config_t *c = CONFIG(handle);
485 if (--(s->lock_count) == 0) {
486 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
487 s->socket.Vpp = 0;
488 s->socket.io_irq = 0;
489 s->ops->set_socket(s, &s->socket);
490 }
491 if (c->state & CONFIG_IO_REQ)
492 for (i = 0; i < MAX_IO_WIN; i++) {
493 if (s->io[i].NumPorts == 0)
494 continue;
495 s->io[i].Config--;
496 if (s->io[i].Config != 0)
497 continue;
498 io.map = i;
499 s->ops->set_io_map(s, &io);
500 }
501 c->state &= ~CONFIG_LOCKED;
502 }
503
504 return CS_SUCCESS;
505} /* pcmcia_release_configuration */
506EXPORT_SYMBOL(pcmcia_release_configuration);
507
508
509/** pcmcia_release_io
510 *
511 * Release_io() releases the I/O ranges allocated by a client. This
512 * may be invoked some time after a card ejection has already dumped
513 * the actual socket configuration, so if the client is "stale", we
514 * don't bother checking the port ranges against the current socket
515 * values.
516 */
517int pcmcia_release_io(client_handle_t handle, io_req_t *req)
518{
519 struct pcmcia_socket *s;
520
521 if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IO_REQ))
522 return CS_BAD_HANDLE;
523 handle->state &= ~CLIENT_IO_REQ;
524 s = SOCKET(handle);
525
526#ifdef CONFIG_CARDBUS
527 if (handle->state & CLIENT_CARDBUS)
528 return CS_SUCCESS;
529#endif
530
531 if (!(handle->state & CLIENT_STALE)) {
532 config_t *c = CONFIG(handle);
533 if (c->state & CONFIG_LOCKED)
534 return CS_CONFIGURATION_LOCKED;
535 if ((c->io.BasePort1 != req->BasePort1) ||
536 (c->io.NumPorts1 != req->NumPorts1) ||
537 (c->io.BasePort2 != req->BasePort2) ||
538 (c->io.NumPorts2 != req->NumPorts2))
539 return CS_BAD_ARGS;
540 c->state &= ~CONFIG_IO_REQ;
541 }
542
543 release_io_space(s, req->BasePort1, req->NumPorts1);
544 if (req->NumPorts2)
545 release_io_space(s, req->BasePort2, req->NumPorts2);
546
547 return CS_SUCCESS;
548} /* pcmcia_release_io */
549EXPORT_SYMBOL(pcmcia_release_io);
550
551
552int pcmcia_release_irq(client_handle_t handle, irq_req_t *req)
553{
554 struct pcmcia_socket *s;
555 if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IRQ_REQ))
556 return CS_BAD_HANDLE;
557 handle->state &= ~CLIENT_IRQ_REQ;
558 s = SOCKET(handle);
559
560 if (!(handle->state & CLIENT_STALE)) {
561 config_t *c = CONFIG(handle);
562 if (c->state & CONFIG_LOCKED)
563 return CS_CONFIGURATION_LOCKED;
564 if (c->irq.Attributes != req->Attributes)
565 return CS_BAD_ATTRIBUTE;
566 if (s->irq.AssignedIRQ != req->AssignedIRQ)
567 return CS_BAD_IRQ;
568 if (--s->irq.Config == 0) {
569 c->state &= ~CONFIG_IRQ_REQ;
570 s->irq.AssignedIRQ = 0;
571 }
572 }
573
574 if (req->Attributes & IRQ_HANDLE_PRESENT) {
575 free_irq(req->AssignedIRQ, req->Instance);
576 }
577
578#ifdef CONFIG_PCMCIA_PROBE
579 pcmcia_used_irq[req->AssignedIRQ]--;
580#endif
581
582 return CS_SUCCESS;
583} /* pcmcia_release_irq */
584EXPORT_SYMBOL(pcmcia_release_irq);
585
586
587int pcmcia_release_window(window_handle_t win)
588{
589 struct pcmcia_socket *s;
590
591 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
592 return CS_BAD_HANDLE;
593 s = win->sock;
594 if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
595 return CS_BAD_HANDLE;
596
597 /* Shut down memory window */
598 win->ctl.flags &= ~MAP_ACTIVE;
599 s->ops->set_mem_map(s, &win->ctl);
600 s->state &= ~SOCKET_WIN_REQ(win->index);
601
602 /* Release system memory */
603 if (win->ctl.res) {
604 release_resource(win->ctl.res);
605 kfree(win->ctl.res);
606 win->ctl.res = NULL;
607 }
608 win->handle->state &= ~CLIENT_WIN_REQ(win->index);
609
610 win->magic = 0;
611
612 return CS_SUCCESS;
613} /* pcmcia_release_window */
614EXPORT_SYMBOL(pcmcia_release_window);
615
616
617int pcmcia_request_configuration(client_handle_t handle,
618 config_req_t *req)
619{
620 int i;
621 u_int base;
622 struct pcmcia_socket *s;
623 config_t *c;
624 pccard_io_map iomap;
625
626 if (CHECK_HANDLE(handle))
627 return CS_BAD_HANDLE;
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
756 if (CHECK_HANDLE(handle))
757 return CS_BAD_HANDLE;
758 s = SOCKET(handle);
759 if (!(s->state & SOCKET_PRESENT))
760 return CS_NO_CARD;
761
762 if (handle->state & CLIENT_CARDBUS) {
763#ifdef CONFIG_CARDBUS
764 handle->state |= CLIENT_IO_REQ;
765 return CS_SUCCESS;
766#else
767 return CS_UNSUPPORTED_FUNCTION;
768#endif
769 }
770
771 if (!req)
772 return CS_UNSUPPORTED_MODE;
773 c = CONFIG(handle);
774 if (c->state & CONFIG_LOCKED)
775 return CS_CONFIGURATION_LOCKED;
776 if (c->state & CONFIG_IO_REQ)
777 return CS_IN_USE;
778 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
779 return CS_BAD_ATTRIBUTE;
780 if ((req->NumPorts2 > 0) &&
781 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
782 return CS_BAD_ATTRIBUTE;
783
784 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
785 req->NumPorts1, req->IOAddrLines))
786 return CS_IN_USE;
787
788 if (req->NumPorts2) {
789 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
790 req->NumPorts2, req->IOAddrLines)) {
791 release_io_space(s, req->BasePort1, req->NumPorts1);
792 return CS_IN_USE;
793 }
794 }
795
796 c->io = *req;
797 c->state |= CONFIG_IO_REQ;
798 handle->state |= CLIENT_IO_REQ;
799 return CS_SUCCESS;
800} /* pcmcia_request_io */
801EXPORT_SYMBOL(pcmcia_request_io);
802
803
804/** pcmcia_request_irq
805 *
806 * Request_irq() reserves an irq for this client.
807 *
808 * Also, since Linux only reserves irq's when they are actually
809 * hooked, we don't guarantee that an irq will still be available
810 * when the configuration is locked. Now that I think about it,
811 * there might be a way to fix this using a dummy handler.
812 */
813
814#ifdef CONFIG_PCMCIA_PROBE
815static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
816{
817 return IRQ_NONE;
818}
819#endif
820
821int pcmcia_request_irq(client_handle_t handle, irq_req_t *req)
822{
823 struct pcmcia_socket *s;
824 config_t *c;
825 int ret = CS_IN_USE, irq = 0;
826 struct pcmcia_device *p_dev = handle_to_pdev(handle);
827
828 if (CHECK_HANDLE(handle))
829 return CS_BAD_HANDLE;
830 s = SOCKET(handle);
831 if (!(s->state & SOCKET_PRESENT))
832 return CS_NO_CARD;
833 c = CONFIG(handle);
834 if (c->state & CONFIG_LOCKED)
835 return CS_CONFIGURATION_LOCKED;
836 if (c->state & CONFIG_IRQ_REQ)
837 return CS_IN_USE;
838
839#ifdef CONFIG_PCMCIA_PROBE
840 if (s->irq.AssignedIRQ != 0) {
841 /* If the interrupt is already assigned, it must be the same */
842 irq = s->irq.AssignedIRQ;
843 } else {
844 int try;
845 u32 mask = s->irq_mask;
846 void *data = NULL;
847
848 for (try = 0; try < 64; try++) {
849 irq = try % 32;
850
851 /* marked as available by driver, and not blocked by userspace? */
852 if (!((mask >> irq) & 1))
853 continue;
854
855 /* avoid an IRQ which is already used by a PCMCIA card */
856 if ((try < 32) && pcmcia_used_irq[irq])
857 continue;
858
859 /* register the correct driver, if possible, of check whether
860 * registering a dummy handle works, i.e. if the IRQ isn't
861 * marked as used by the kernel resource management core */
862 ret = request_irq(irq,
863 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
864 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
865 (s->functions > 1) ||
866 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
867 p_dev->dev.bus_id,
868 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
869 if (!ret) {
870 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
871 free_irq(irq, data);
872 break;
873 }
874 }
875 }
876#endif
877 if (ret) {
878 if (!s->pci_irq)
879 return ret;
880 irq = s->pci_irq;
881 }
882
883 if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
884 if (request_irq(irq, req->Handler,
885 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
886 (s->functions > 1) ||
887 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
888 p_dev->dev.bus_id, req->Instance))
889 return CS_IN_USE;
890 }
891
892 c->irq.Attributes = req->Attributes;
893 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
894 s->irq.Config++;
895
896 c->state |= CONFIG_IRQ_REQ;
897 handle->state |= CLIENT_IRQ_REQ;
898
899#ifdef CONFIG_PCMCIA_PROBE
900 pcmcia_used_irq[irq]++;
901#endif
902
903 return CS_SUCCESS;
904} /* pcmcia_request_irq */
905EXPORT_SYMBOL(pcmcia_request_irq);
906
907
908/** pcmcia_request_window
909 *
910 * Request_window() establishes a mapping between card memory space
911 * and system memory space.
912 */
913int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh)
914{
915 struct pcmcia_socket *s;
916 window_t *win;
917 u_long align;
918 int w;
919
920 if (CHECK_HANDLE(*handle))
921 return CS_BAD_HANDLE;
922 s = (*handle)->Socket;
923 if (!(s->state & SOCKET_PRESENT))
924 return CS_NO_CARD;
925 if (req->Attributes & (WIN_PAGED | WIN_SHARED))
926 return CS_BAD_ATTRIBUTE;
927
928 /* Window size defaults to smallest available */
929 if (req->Size == 0)
930 req->Size = s->map_size;
931 align = (((s->features & SS_CAP_MEM_ALIGN) ||
932 (req->Attributes & WIN_STRICT_ALIGN)) ?
933 req->Size : s->map_size);
934 if (req->Size & (s->map_size-1))
935 return CS_BAD_SIZE;
936 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
937 (req->Base & (align-1)))
938 return CS_BAD_BASE;
939 if (req->Base)
940 align = 0;
941
942 /* Allocate system memory window */
943 for (w = 0; w < MAX_WIN; w++)
944 if (!(s->state & SOCKET_WIN_REQ(w))) break;
945 if (w == MAX_WIN)
946 return CS_OUT_OF_RESOURCE;
947
948 win = &s->win[w];
949 win->magic = WINDOW_MAGIC;
950 win->index = w;
951 win->handle = *handle;
952 win->sock = s;
953
954 if (!(s->features & SS_CAP_STATIC_MAP)) {
955 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
956 (req->Attributes & WIN_MAP_BELOW_1MB), s);
957 if (!win->ctl.res)
958 return CS_IN_USE;
959 }
960 (*handle)->state |= CLIENT_WIN_REQ(w);
961
962 /* Configure the socket controller */
963 win->ctl.map = w+1;
964 win->ctl.flags = 0;
965 win->ctl.speed = req->AccessSpeed;
966 if (req->Attributes & WIN_MEMORY_TYPE)
967 win->ctl.flags |= MAP_ATTRIB;
968 if (req->Attributes & WIN_ENABLE)
969 win->ctl.flags |= MAP_ACTIVE;
970 if (req->Attributes & WIN_DATA_WIDTH_16)
971 win->ctl.flags |= MAP_16BIT;
972 if (req->Attributes & WIN_USE_WAIT)
973 win->ctl.flags |= MAP_USE_WAIT;
974 win->ctl.card_start = 0;
975 if (s->ops->set_mem_map(s, &win->ctl) != 0)
976 return CS_BAD_ARGS;
977 s->state |= SOCKET_WIN_REQ(w);
978
979 /* Return window handle */
980 if (s->features & SS_CAP_STATIC_MAP) {
981 req->Base = win->ctl.static_start;
982 } else {
983 req->Base = win->ctl.res->start;
984 }
985 *wh = win;
986
987 return CS_SUCCESS;
988} /* pcmcia_request_window */
989EXPORT_SYMBOL(pcmcia_request_window);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 14:35:21 -0500