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Linux 2.6.17.7
[linux/fpc-iii.git] / drivers / pcmcia / pcmcia_resource.c
blob3131bb0a0095af500d4aa063dbf79e692284cec2
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/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
24 #define IN_CARD_SERVICES
25 #include <pcmcia/cs_types.h>
26 #include <pcmcia/ss.h>
27 #include <pcmcia/cs.h>
28 #include <pcmcia/bulkmem.h>
29 #include <pcmcia/cistpl.h>
30 #include <pcmcia/cisreg.h>
31 #include <pcmcia/ds.h>
32
33 #include "cs_internal.h"
34 #include "ds_internal.h"
35
36
37 /* Access speed for IO windows */
38 static int io_speed = 0;
39 module_param(io_speed, int, 0444);
40
41
42 #ifdef CONFIG_PCMCIA_PROBE
43 #include <asm/irq.h>
44 /* mask of IRQs already reserved by other cards, we should avoid using them */
45 static u8 pcmcia_used_irq[NR_IRQS];
46 #endif
47
48
49 #ifdef DEBUG
50 extern int ds_pc_debug;
51 #define cs_socket_name(skt) ((skt)->dev.class_id)
52
53 #define ds_dbg(skt, lvl, fmt, arg...) do { \
54 if (ds_pc_debug >= lvl) \
55 printk(KERN_DEBUG "pcmcia_resource: %s: " fmt, \
56 cs_socket_name(skt) , ## arg); \
57 } while (0)
58 #else
59 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
60 #endif
61
62
63
64 /** alloc_io_space
65 *
66 * Special stuff for managing IO windows, because they are scarce
67 */
68
69 static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base,
70 ioaddr_t num, u_int lines)
71 {
72 int i;
73 kio_addr_t try, align;
74
75 align = (*base) ? (lines ? 1<<lines : 0) : 1;
76 if (align && (align < num)) {
77 if (*base) {
78 ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n",
79 num, align);
80 align = 0;
81 } else
82 while (align && (align < num)) align <<= 1;
83 }
84 if (*base & ~(align-1)) {
85 ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n",
86 *base, align);
87 align = 0;
88 }
89 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
90 *base = s->io_offset | (*base & 0x0fff);
91 return 0;
92 }
93 /* Check for an already-allocated window that must conflict with
94 * what was asked for. It is a hack because it does not catch all
95 * potential conflicts, just the most obvious ones.
96 */
97 for (i = 0; i < MAX_IO_WIN; i++)
98 if ((s->io[i].res) &&
99 ((s->io[i].res->start & (align-1)) == *base))
100 return 1;
101 for (i = 0; i < MAX_IO_WIN; i++) {
102 if (!s->io[i].res) {
103 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
104 if (s->io[i].res) {
105 *base = s->io[i].res->start;
106 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
107 s->io[i].InUse = num;
108 break;
109 } else
110 return 1;
111 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
112 continue;
113 /* Try to extend top of window */
114 try = s->io[i].res->end + 1;
115 if ((*base == 0) || (*base == try))
116 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
117 s->io[i].res->end + num, s) == 0) {
118 *base = try;
119 s->io[i].InUse += num;
120 break;
121 }
122 /* Try to extend bottom of window */
123 try = s->io[i].res->start - num;
124 if ((*base == 0) || (*base == try))
125 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
126 s->io[i].res->end, s) == 0) {
127 *base = try;
128 s->io[i].InUse += num;
129 break;
130 }
131 }
132 return (i == MAX_IO_WIN);
133 } /* alloc_io_space */
134
135
136 static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
137 ioaddr_t num)
138 {
139 int i;
140
141 for (i = 0; i < MAX_IO_WIN; i++) {
142 if (!s->io[i].res)
143 continue;
144 if ((s->io[i].res->start <= base) &&
145 (s->io[i].res->end >= base+num-1)) {
146 s->io[i].InUse -= num;
147 /* Free the window if no one else is using it */
148 if (s->io[i].InUse == 0) {
149 release_resource(s->io[i].res);
150 kfree(s->io[i].res);
151 s->io[i].res = NULL;
152 }
153 }
154 }
155 } /* release_io_space */
156
157
158 /** pccard_access_configuration_register
159 *
160 * Access_configuration_register() reads and writes configuration
161 * registers in attribute memory. Memory window 0 is reserved for
162 * this and the tuple reading services.
163 */
164
165 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
166 conf_reg_t *reg)
167 {
168 struct pcmcia_socket *s;
169 config_t *c;
170 int addr;
171 u_char val;
172
173 if (!p_dev || !p_dev->function_config)
174 return CS_NO_CARD;
175
176 s = p_dev->socket;
177 c = p_dev->function_config;
178
179 if (!(c->state & CONFIG_LOCKED))
180 return CS_CONFIGURATION_LOCKED;
181
182 addr = (c->ConfigBase + reg->Offset) >> 1;
183
184 switch (reg->Action) {
185 case CS_READ:
186 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
187 reg->Value = val;
188 break;
189 case CS_WRITE:
190 val = reg->Value;
191 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
192 break;
193 default:
194 return CS_BAD_ARGS;
195 break;
196 }
197 return CS_SUCCESS;
198 } /* pcmcia_access_configuration_register */
199 EXPORT_SYMBOL(pcmcia_access_configuration_register);
200
201
202 int pccard_get_configuration_info(struct pcmcia_socket *s,
203 struct pcmcia_device *p_dev,
204 config_info_t *config)
205 {
206 config_t *c;
207
208 if (!(s->state & SOCKET_PRESENT))
209 return CS_NO_CARD;
210
211
212 #ifdef CONFIG_CARDBUS
213 if (s->state & SOCKET_CARDBUS) {
214 memset(config, 0, sizeof(config_info_t));
215 config->Vcc = s->socket.Vcc;
216 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
217 config->Option = s->cb_dev->subordinate->number;
218 if (s->state & SOCKET_CARDBUS_CONFIG) {
219 config->Attributes = CONF_VALID_CLIENT;
220 config->IntType = INT_CARDBUS;
221 config->AssignedIRQ = s->irq.AssignedIRQ;
222 if (config->AssignedIRQ)
223 config->Attributes |= CONF_ENABLE_IRQ;
224 if (s->io[0].res) {
225 config->BasePort1 = s->io[0].res->start;
226 config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1;
227 }
228 }
229 return CS_SUCCESS;
230 }
231 #endif
232
233 if (p_dev) {
234 c = p_dev->function_config;
235 config->Function = p_dev->func;
236 } else {
237 c = NULL;
238 config->Function = 0;
239 }
240
241 if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
242 config->Attributes = 0;
243 config->Vcc = s->socket.Vcc;
244 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
245 return CS_SUCCESS;
246 }
247
248 /* !!! This is a hack !!! */
249 memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
250 config->Attributes |= CONF_VALID_CLIENT;
251 config->CardValues = c->CardValues;
252 config->IRQAttributes = c->irq.Attributes;
253 config->AssignedIRQ = s->irq.AssignedIRQ;
254 config->BasePort1 = c->io.BasePort1;
255 config->NumPorts1 = c->io.NumPorts1;
256 config->Attributes1 = c->io.Attributes1;
257 config->BasePort2 = c->io.BasePort2;
258 config->NumPorts2 = c->io.NumPorts2;
259 config->Attributes2 = c->io.Attributes2;
260 config->IOAddrLines = c->io.IOAddrLines;
261
262 return CS_SUCCESS;
263 } /* pccard_get_configuration_info */
264
265 int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
266 config_info_t *config)
267 {
268 return pccard_get_configuration_info(p_dev->socket, p_dev,
269 config);
270 }
271 EXPORT_SYMBOL(pcmcia_get_configuration_info);
272
273
274 /** pcmcia_get_window
275 */
276 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
277 int idx, win_req_t *req)
278 {
279 window_t *win;
280 int w;
281
282 if (!s || !(s->state & SOCKET_PRESENT))
283 return CS_NO_CARD;
284 for (w = idx; w < MAX_WIN; w++)
285 if (s->state & SOCKET_WIN_REQ(w))
286 break;
287 if (w == MAX_WIN)
288 return CS_NO_MORE_ITEMS;
289 win = &s->win[w];
290 req->Base = win->ctl.res->start;
291 req->Size = win->ctl.res->end - win->ctl.res->start + 1;
292 req->AccessSpeed = win->ctl.speed;
293 req->Attributes = 0;
294 if (win->ctl.flags & MAP_ATTRIB)
295 req->Attributes |= WIN_MEMORY_TYPE_AM;
296 if (win->ctl.flags & MAP_ACTIVE)
297 req->Attributes |= WIN_ENABLE;
298 if (win->ctl.flags & MAP_16BIT)
299 req->Attributes |= WIN_DATA_WIDTH_16;
300 if (win->ctl.flags & MAP_USE_WAIT)
301 req->Attributes |= WIN_USE_WAIT;
302 *handle = win;
303 return CS_SUCCESS;
304 } /* pcmcia_get_window */
305 EXPORT_SYMBOL(pcmcia_get_window);
306
307
308 /** pccard_get_status
309 *
310 * Get the current socket state bits. We don't support the latched
311 * SocketState yet: I haven't seen any point for it.
312 */
313
314 int pccard_get_status(struct pcmcia_socket *s, struct pcmcia_device *p_dev,
315 cs_status_t *status)
316 {
317 config_t *c;
318 int val;
319
320 s->ops->get_status(s, &val);
321 status->CardState = status->SocketState = 0;
322 status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
323 status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
324 status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
325 status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
326 if (s->state & SOCKET_SUSPEND)
327 status->CardState |= CS_EVENT_PM_SUSPEND;
328 if (!(s->state & SOCKET_PRESENT))
329 return CS_NO_CARD;
330
331 c = (p_dev) ? p_dev->function_config : NULL;
332
333 if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
334 (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
335 u_char reg;
336 if (c->CardValues & PRESENT_PIN_REPLACE) {
337 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
338 status->CardState |=
339 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
340 status->CardState |=
341 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
342 status->CardState |=
343 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
344 status->CardState |=
345 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
346 } else {
347 /* No PRR? Then assume we're always ready */
348 status->CardState |= CS_EVENT_READY_CHANGE;
349 }
350 if (c->CardValues & PRESENT_EXT_STATUS) {
351 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
352 status->CardState |=
353 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
354 }
355 return CS_SUCCESS;
356 }
357 status->CardState |=
358 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
359 status->CardState |=
360 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
361 status->CardState |=
362 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
363 status->CardState |=
364 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
365 return CS_SUCCESS;
366 } /* pccard_get_status */
367
368 int pcmcia_get_status(struct pcmcia_device *p_dev, cs_status_t *status)
369 {
370 return pccard_get_status(p_dev->socket, p_dev, status);
371 }
372 EXPORT_SYMBOL(pcmcia_get_status);
373
374
375
376 /** pcmcia_get_mem_page
377 *
378 * Change the card address of an already open memory window.
379 */
380 int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
381 {
382 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
383 return CS_BAD_HANDLE;
384 req->Page = 0;
385 req->CardOffset = win->ctl.card_start;
386 return CS_SUCCESS;
387 } /* pcmcia_get_mem_page */
388 EXPORT_SYMBOL(pcmcia_get_mem_page);
389
390
391 int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
392 {
393 struct pcmcia_socket *s;
394 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
395 return CS_BAD_HANDLE;
396 if (req->Page != 0)
397 return CS_BAD_PAGE;
398 s = win->sock;
399 win->ctl.card_start = req->CardOffset;
400 if (s->ops->set_mem_map(s, &win->ctl) != 0)
401 return CS_BAD_OFFSET;
402 return CS_SUCCESS;
403 } /* pcmcia_map_mem_page */
404 EXPORT_SYMBOL(pcmcia_map_mem_page);
405
406
407 /** pcmcia_modify_configuration
408 *
409 * Modify a locked socket configuration
410 */
411 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
412 modconf_t *mod)
413 {
414 struct pcmcia_socket *s;
415 config_t *c;
416
417 s = p_dev->socket;
418 c = p_dev->function_config;
419
420 if (!(s->state & SOCKET_PRESENT))
421 return CS_NO_CARD;
422 if (!(c->state & CONFIG_LOCKED))
423 return CS_CONFIGURATION_LOCKED;
424
425 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
426 if (mod->Attributes & CONF_ENABLE_IRQ) {
427 c->Attributes |= CONF_ENABLE_IRQ;
428 s->socket.io_irq = s->irq.AssignedIRQ;
429 } else {
430 c->Attributes &= ~CONF_ENABLE_IRQ;
431 s->socket.io_irq = 0;
432 }
433 s->ops->set_socket(s, &s->socket);
434 }
435
436 if (mod->Attributes & CONF_VCC_CHANGE_VALID)
437 return CS_BAD_VCC;
438
439 /* We only allow changing Vpp1 and Vpp2 to the same value */
440 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
441 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
442 if (mod->Vpp1 != mod->Vpp2)
443 return CS_BAD_VPP;
444 s->socket.Vpp = mod->Vpp1;
445 if (s->ops->set_socket(s, &s->socket))
446 return CS_BAD_VPP;
447 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
448 (mod->Attributes & CONF_VPP2_CHANGE_VALID))
449 return CS_BAD_VPP;
450
451 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
452 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
453 pccard_io_map io_on;
454 int i;
455
456 io_on.speed = io_speed;
457 for (i = 0; i < MAX_IO_WIN; i++) {
458 if (!s->io[i].res)
459 continue;
460 io_off.map = i;
461 io_on.map = i;
462
463 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
464 io_on.start = s->io[i].res->start;
465 io_on.stop = s->io[i].res->end;
466
467 s->ops->set_io_map(s, &io_off);
468 mdelay(40);
469 s->ops->set_io_map(s, &io_on);
470 }
471 }
472
473 return CS_SUCCESS;
474 } /* modify_configuration */
475 EXPORT_SYMBOL(pcmcia_modify_configuration);
476
477
478 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
479 {
480 pccard_io_map io = { 0, 0, 0, 0, 1 };
481 struct pcmcia_socket *s = p_dev->socket;
482 config_t *c = p_dev->function_config;
483 int i;
484
485 if (p_dev->_locked) {
486 p_dev->_locked = 0;
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 }
494 if (c->state & CONFIG_LOCKED) {
495 c->state &= ~CONFIG_LOCKED;
496 if (c->state & CONFIG_IO_REQ)
497 for (i = 0; i < MAX_IO_WIN; i++) {
498 if (!s->io[i].res)
499 continue;
500 s->io[i].Config--;
501 if (s->io[i].Config != 0)
502 continue;
503 io.map = i;
504 s->ops->set_io_map(s, &io);
505 }
506 }
507
508 return CS_SUCCESS;
509 } /* pcmcia_release_configuration */
510
511
512 /** pcmcia_release_io
513 *
514 * Release_io() releases the I/O ranges allocated by a client. This
515 * may be invoked some time after a card ejection has already dumped
516 * the actual socket configuration, so if the client is "stale", we
517 * don't bother checking the port ranges against the current socket
518 * values.
519 */
520 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
521 {
522 struct pcmcia_socket *s = p_dev->socket;
523 config_t *c = p_dev->function_config;
524
525 if (!p_dev->_io )
526 return CS_BAD_HANDLE;
527
528 p_dev->_io = 0;
529
530 if ((c->io.BasePort1 != req->BasePort1) ||
531 (c->io.NumPorts1 != req->NumPorts1) ||
532 (c->io.BasePort2 != req->BasePort2) ||
533 (c->io.NumPorts2 != req->NumPorts2))
534 return CS_BAD_ARGS;
535
536 c->state &= ~CONFIG_IO_REQ;
537
538 release_io_space(s, req->BasePort1, req->NumPorts1);
539 if (req->NumPorts2)
540 release_io_space(s, req->BasePort2, req->NumPorts2);
541
542 return CS_SUCCESS;
543 } /* pcmcia_release_io */
544
545
546 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
547 {
548 struct pcmcia_socket *s = p_dev->socket;
549 config_t *c= p_dev->function_config;
550
551 if (!p_dev->_irq)
552 return CS_BAD_HANDLE;
553 p_dev->_irq = 0;
554
555 if (c->state & CONFIG_LOCKED)
556 return CS_CONFIGURATION_LOCKED;
557 if (c->irq.Attributes != req->Attributes)
558 return CS_BAD_ATTRIBUTE;
559 if (s->irq.AssignedIRQ != req->AssignedIRQ)
560 return CS_BAD_IRQ;
561 if (--s->irq.Config == 0) {
562 c->state &= ~CONFIG_IRQ_REQ;
563 s->irq.AssignedIRQ = 0;
564 }
565
566 if (req->Attributes & IRQ_HANDLE_PRESENT) {
567 free_irq(req->AssignedIRQ, req->Instance);
568 }
569
570 #ifdef CONFIG_PCMCIA_PROBE
571 pcmcia_used_irq[req->AssignedIRQ]--;
572 #endif
573
574 return CS_SUCCESS;
575 } /* pcmcia_release_irq */
576
577
578 int pcmcia_release_window(window_handle_t win)
579 {
580 struct pcmcia_socket *s;
581
582 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
583 return CS_BAD_HANDLE;
584 s = win->sock;
585 if (!(win->handle->_win & CLIENT_WIN_REQ(win->index)))
586 return CS_BAD_HANDLE;
587
588 /* Shut down memory window */
589 win->ctl.flags &= ~MAP_ACTIVE;
590 s->ops->set_mem_map(s, &win->ctl);
591 s->state &= ~SOCKET_WIN_REQ(win->index);
592
593 /* Release system memory */
594 if (win->ctl.res) {
595 release_resource(win->ctl.res);
596 kfree(win->ctl.res);
597 win->ctl.res = NULL;
598 }
599 win->handle->_win &= ~CLIENT_WIN_REQ(win->index);
600
601 win->magic = 0;
602
603 return CS_SUCCESS;
604 } /* pcmcia_release_window */
605 EXPORT_SYMBOL(pcmcia_release_window);
606
607
608 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
609 config_req_t *req)
610 {
611 int i;
612 u_int base;
613 struct pcmcia_socket *s = p_dev->socket;
614 config_t *c;
615 pccard_io_map iomap;
616
617 if (!(s->state & SOCKET_PRESENT))
618 return CS_NO_CARD;
619
620 if (req->IntType & INT_CARDBUS)
621 return CS_UNSUPPORTED_MODE;
622 c = p_dev->function_config;
623 if (c->state & CONFIG_LOCKED)
624 return CS_CONFIGURATION_LOCKED;
625
626 /* Do power control. We don't allow changes in Vcc. */
627 s->socket.Vpp = req->Vpp;
628 if (s->ops->set_socket(s, &s->socket))
629 return CS_BAD_VPP;
630
631 /* Pick memory or I/O card, DMA mode, interrupt */
632 c->IntType = req->IntType;
633 c->Attributes = req->Attributes;
634 if (req->IntType & INT_MEMORY_AND_IO)
635 s->socket.flags |= SS_IOCARD;
636 if (req->IntType & INT_ZOOMED_VIDEO)
637 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
638 if (req->Attributes & CONF_ENABLE_DMA)
639 s->socket.flags |= SS_DMA_MODE;
640 if (req->Attributes & CONF_ENABLE_SPKR)
641 s->socket.flags |= SS_SPKR_ENA;
642 if (req->Attributes & CONF_ENABLE_IRQ)
643 s->socket.io_irq = s->irq.AssignedIRQ;
644 else
645 s->socket.io_irq = 0;
646 s->ops->set_socket(s, &s->socket);
647 s->lock_count++;
648
649 /* Set up CIS configuration registers */
650 base = c->ConfigBase = req->ConfigBase;
651 c->CardValues = req->Present;
652 if (req->Present & PRESENT_COPY) {
653 c->Copy = req->Copy;
654 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
655 }
656 if (req->Present & PRESENT_OPTION) {
657 if (s->functions == 1) {
658 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
659 } else {
660 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
661 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
662 if (req->Present & PRESENT_IOBASE_0)
663 c->Option |= COR_ADDR_DECODE;
664 }
665 if (c->state & CONFIG_IRQ_REQ)
666 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
667 c->Option |= COR_LEVEL_REQ;
668 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
669 mdelay(40);
670 }
671 if (req->Present & PRESENT_STATUS) {
672 c->Status = req->Status;
673 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
674 }
675 if (req->Present & PRESENT_PIN_REPLACE) {
676 c->Pin = req->Pin;
677 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
678 }
679 if (req->Present & PRESENT_EXT_STATUS) {
680 c->ExtStatus = req->ExtStatus;
681 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
682 }
683 if (req->Present & PRESENT_IOBASE_0) {
684 u_char b = c->io.BasePort1 & 0xff;
685 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
686 b = (c->io.BasePort1 >> 8) & 0xff;
687 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
688 }
689 if (req->Present & PRESENT_IOSIZE) {
690 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
691 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
692 }
693
694 /* Configure I/O windows */
695 if (c->state & CONFIG_IO_REQ) {
696 iomap.speed = io_speed;
697 for (i = 0; i < MAX_IO_WIN; i++)
698 if (s->io[i].res) {
699 iomap.map = i;
700 iomap.flags = MAP_ACTIVE;
701 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
702 case IO_DATA_PATH_WIDTH_16:
703 iomap.flags |= MAP_16BIT; break;
704 case IO_DATA_PATH_WIDTH_AUTO:
705 iomap.flags |= MAP_AUTOSZ; break;
706 default:
707 break;
708 }
709 iomap.start = s->io[i].res->start;
710 iomap.stop = s->io[i].res->end;
711 s->ops->set_io_map(s, &iomap);
712 s->io[i].Config++;
713 }
714 }
715
716 c->state |= CONFIG_LOCKED;
717 p_dev->_locked = 1;
718 return CS_SUCCESS;
719 } /* pcmcia_request_configuration */
720 EXPORT_SYMBOL(pcmcia_request_configuration);
721
722
723 /** pcmcia_request_io
724 *
725 * Request_io() reserves ranges of port addresses for a socket.
726 * I have not implemented range sharing or alias addressing.
727 */
728 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
729 {
730 struct pcmcia_socket *s = p_dev->socket;
731 config_t *c;
732
733 if (!(s->state & SOCKET_PRESENT))
734 return CS_NO_CARD;
735
736 if (!req)
737 return CS_UNSUPPORTED_MODE;
738 c = p_dev->function_config;
739 if (c->state & CONFIG_LOCKED)
740 return CS_CONFIGURATION_LOCKED;
741 if (c->state & CONFIG_IO_REQ)
742 return CS_IN_USE;
743 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
744 return CS_BAD_ATTRIBUTE;
745 if ((req->NumPorts2 > 0) &&
746 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
747 return CS_BAD_ATTRIBUTE;
748
749 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
750 req->NumPorts1, req->IOAddrLines))
751 return CS_IN_USE;
752
753 if (req->NumPorts2) {
754 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
755 req->NumPorts2, req->IOAddrLines)) {
756 release_io_space(s, req->BasePort1, req->NumPorts1);
757 return CS_IN_USE;
758 }
759 }
760
761 c->io = *req;
762 c->state |= CONFIG_IO_REQ;
763 p_dev->_io = 1;
764 return CS_SUCCESS;
765 } /* pcmcia_request_io */
766 EXPORT_SYMBOL(pcmcia_request_io);
767
768
769 /** pcmcia_request_irq
770 *
771 * Request_irq() reserves an irq for this client.
772 *
773 * Also, since Linux only reserves irq's when they are actually
774 * hooked, we don't guarantee that an irq will still be available
775 * when the configuration is locked. Now that I think about it,
776 * there might be a way to fix this using a dummy handler.
777 */
778
779 #ifdef CONFIG_PCMCIA_PROBE
780 static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
781 {
782 return IRQ_NONE;
783 }
784 #endif
785
786 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
787 {
788 struct pcmcia_socket *s = p_dev->socket;
789 config_t *c;
790 int ret = CS_IN_USE, irq = 0;
791
792 if (!(s->state & SOCKET_PRESENT))
793 return CS_NO_CARD;
794 c = p_dev->function_config;
795 if (c->state & CONFIG_LOCKED)
796 return CS_CONFIGURATION_LOCKED;
797 if (c->state & CONFIG_IRQ_REQ)
798 return CS_IN_USE;
799
800 #ifdef CONFIG_PCMCIA_PROBE
801 if (s->irq.AssignedIRQ != 0) {
802 /* If the interrupt is already assigned, it must be the same */
803 irq = s->irq.AssignedIRQ;
804 } else {
805 int try;
806 u32 mask = s->irq_mask;
807 void *data = &p_dev->dev.driver; /* something unique to this device */
808
809 for (try = 0; try < 64; try++) {
810 irq = try % 32;
811
812 /* marked as available by driver, and not blocked by userspace? */
813 if (!((mask >> irq) & 1))
814 continue;
815
816 /* avoid an IRQ which is already used by a PCMCIA card */
817 if ((try < 32) && pcmcia_used_irq[irq])
818 continue;
819
820 /* register the correct driver, if possible, of check whether
821 * registering a dummy handle works, i.e. if the IRQ isn't
822 * marked as used by the kernel resource management core */
823 ret = request_irq(irq,
824 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
825 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
826 (s->functions > 1) ||
827 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
828 p_dev->devname,
829 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
830 if (!ret) {
831 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
832 free_irq(irq, data);
833 break;
834 }
835 }
836 }
837 #endif
838 /* only assign PCI irq if no IRQ already assigned */
839 if (ret && !s->irq.AssignedIRQ) {
840 if (!s->pci_irq)
841 return ret;
842 irq = s->pci_irq;
843 }
844
845 if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
846 if (request_irq(irq, req->Handler,
847 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
848 (s->functions > 1) ||
849 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
850 p_dev->devname, req->Instance))
851 return CS_IN_USE;
852 }
853
854 c->irq.Attributes = req->Attributes;
855 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
856 s->irq.Config++;
857
858 c->state |= CONFIG_IRQ_REQ;
859 p_dev->_irq = 1;
860
861 #ifdef CONFIG_PCMCIA_PROBE
862 pcmcia_used_irq[irq]++;
863 #endif
864
865 return CS_SUCCESS;
866 } /* pcmcia_request_irq */
867 EXPORT_SYMBOL(pcmcia_request_irq);
868
869
870 /** pcmcia_request_window
871 *
872 * Request_window() establishes a mapping between card memory space
873 * and system memory space.
874 */
875 int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
876 {
877 struct pcmcia_socket *s = (*p_dev)->socket;
878 window_t *win;
879 u_long align;
880 int w;
881
882 if (!(s->state & SOCKET_PRESENT))
883 return CS_NO_CARD;
884 if (req->Attributes & (WIN_PAGED | WIN_SHARED))
885 return CS_BAD_ATTRIBUTE;
886
887 /* Window size defaults to smallest available */
888 if (req->Size == 0)
889 req->Size = s->map_size;
890 align = (((s->features & SS_CAP_MEM_ALIGN) ||
891 (req->Attributes & WIN_STRICT_ALIGN)) ?
892 req->Size : s->map_size);
893 if (req->Size & (s->map_size-1))
894 return CS_BAD_SIZE;
895 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
896 (req->Base & (align-1)))
897 return CS_BAD_BASE;
898 if (req->Base)
899 align = 0;
900
901 /* Allocate system memory window */
902 for (w = 0; w < MAX_WIN; w++)
903 if (!(s->state & SOCKET_WIN_REQ(w))) break;
904 if (w == MAX_WIN)
905 return CS_OUT_OF_RESOURCE;
906
907 win = &s->win[w];
908 win->magic = WINDOW_MAGIC;
909 win->index = w;
910 win->handle = *p_dev;
911 win->sock = s;
912
913 if (!(s->features & SS_CAP_STATIC_MAP)) {
914 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
915 (req->Attributes & WIN_MAP_BELOW_1MB), s);
916 if (!win->ctl.res)
917 return CS_IN_USE;
918 }
919 (*p_dev)->_win |= CLIENT_WIN_REQ(w);
920
921 /* Configure the socket controller */
922 win->ctl.map = w+1;
923 win->ctl.flags = 0;
924 win->ctl.speed = req->AccessSpeed;
925 if (req->Attributes & WIN_MEMORY_TYPE)
926 win->ctl.flags |= MAP_ATTRIB;
927 if (req->Attributes & WIN_ENABLE)
928 win->ctl.flags |= MAP_ACTIVE;
929 if (req->Attributes & WIN_DATA_WIDTH_16)
930 win->ctl.flags |= MAP_16BIT;
931 if (req->Attributes & WIN_USE_WAIT)
932 win->ctl.flags |= MAP_USE_WAIT;
933 win->ctl.card_start = 0;
934 if (s->ops->set_mem_map(s, &win->ctl) != 0)
935 return CS_BAD_ARGS;
936 s->state |= SOCKET_WIN_REQ(w);
937
938 /* Return window handle */
939 if (s->features & SS_CAP_STATIC_MAP) {
940 req->Base = win->ctl.static_start;
941 } else {
942 req->Base = win->ctl.res->start;
943 }
944 *wh = win;
945
946 return CS_SUCCESS;
947 } /* pcmcia_request_window */
948 EXPORT_SYMBOL(pcmcia_request_window);
949
950 void pcmcia_disable_device(struct pcmcia_device *p_dev) {
951 pcmcia_release_configuration(p_dev);
952 pcmcia_release_io(p_dev, &p_dev->io);
953 pcmcia_release_irq(p_dev, &p_dev->irq);
954 if (&p_dev->win)
955 pcmcia_release_window(p_dev->win);
956 }
957 EXPORT_SYMBOL(pcmcia_disable_device);
Linux with added FPC-III support