?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
e1000: Add 82573 controller support to TSO fix
[linux-2.6/mini2440.git] / drivers / pcmcia / pcmcia_resource.c
blob89022ad5b5207eeac9b90898478f8e49b4088174
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/cs_types.h>
27 #include <pcmcia/ss.h>
28 #include <pcmcia/cs.h>
29 #include <pcmcia/bulkmem.h>
30 #include <pcmcia/cistpl.h>
31 #include <pcmcia/cisreg.h>
32 #include <pcmcia/ds.h>
33
34 #include "cs_internal.h"
35 #include "ds_internal.h"
36
37
38 /* Access speed for IO windows */
39 static int io_speed = 0;
40 module_param(io_speed, int, 0444);
41
42
43 #ifdef CONFIG_PCMCIA_PROBE
44 #include <asm/irq.h>
45 /* mask of IRQs already reserved by other cards, we should avoid using them */
46 static u8 pcmcia_used_irq[NR_IRQS];
47 #endif
48
49
50 #ifdef DEBUG
51 extern 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
70 static 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
140 static 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
168 int 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
205 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
206 conf_reg_t *reg)
207 {
208 return pccard_access_configuration_register(p_dev->socket,
209 p_dev->func, reg);
210 }
211 EXPORT_SYMBOL(pcmcia_access_configuration_register);
212
213
214
215 int pccard_get_configuration_info(struct pcmcia_socket *s,
216 unsigned int function,
217 config_info_t *config)
218 {
219 config_t *c;
220
221 if (!(s->state & SOCKET_PRESENT))
222 return CS_NO_CARD;
223
224 config->Function = function;
225
226 #ifdef CONFIG_CARDBUS
227 if (s->state & SOCKET_CARDBUS) {
228 memset(config, 0, sizeof(config_info_t));
229 config->Vcc = s->socket.Vcc;
230 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
231 config->Option = s->cb_dev->subordinate->number;
232 if (s->state & SOCKET_CARDBUS_CONFIG) {
233 config->Attributes = CONF_VALID_CLIENT;
234 config->IntType = INT_CARDBUS;
235 config->AssignedIRQ = s->irq.AssignedIRQ;
236 if (config->AssignedIRQ)
237 config->Attributes |= CONF_ENABLE_IRQ;
238 config->BasePort1 = s->io[0].BasePort;
239 config->NumPorts1 = s->io[0].NumPorts;
240 }
241 return CS_SUCCESS;
242 }
243 #endif
244
245 c = (s->config != NULL) ? &s->config[function] : NULL;
246
247 if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
248 config->Attributes = 0;
249 config->Vcc = s->socket.Vcc;
250 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
251 return CS_SUCCESS;
252 }
253
254 /* !!! This is a hack !!! */
255 memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
256 config->Attributes |= CONF_VALID_CLIENT;
257 config->CardValues = c->CardValues;
258 config->IRQAttributes = c->irq.Attributes;
259 config->AssignedIRQ = s->irq.AssignedIRQ;
260 config->BasePort1 = c->io.BasePort1;
261 config->NumPorts1 = c->io.NumPorts1;
262 config->Attributes1 = c->io.Attributes1;
263 config->BasePort2 = c->io.BasePort2;
264 config->NumPorts2 = c->io.NumPorts2;
265 config->Attributes2 = c->io.Attributes2;
266 config->IOAddrLines = c->io.IOAddrLines;
267
268 return CS_SUCCESS;
269 } /* pccard_get_configuration_info */
270
271 int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
272 config_info_t *config)
273 {
274 return pccard_get_configuration_info(p_dev->socket, p_dev->func,
275 config);
276 }
277 EXPORT_SYMBOL(pcmcia_get_configuration_info);
278
279
280 /** pcmcia_get_window
281 */
282 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
283 int idx, win_req_t *req)
284 {
285 window_t *win;
286 int w;
287
288 if (!s || !(s->state & SOCKET_PRESENT))
289 return CS_NO_CARD;
290 for (w = idx; w < MAX_WIN; w++)
291 if (s->state & SOCKET_WIN_REQ(w))
292 break;
293 if (w == MAX_WIN)
294 return CS_NO_MORE_ITEMS;
295 win = &s->win[w];
296 req->Base = win->ctl.res->start;
297 req->Size = win->ctl.res->end - win->ctl.res->start + 1;
298 req->AccessSpeed = win->ctl.speed;
299 req->Attributes = 0;
300 if (win->ctl.flags & MAP_ATTRIB)
301 req->Attributes |= WIN_MEMORY_TYPE_AM;
302 if (win->ctl.flags & MAP_ACTIVE)
303 req->Attributes |= WIN_ENABLE;
304 if (win->ctl.flags & MAP_16BIT)
305 req->Attributes |= WIN_DATA_WIDTH_16;
306 if (win->ctl.flags & MAP_USE_WAIT)
307 req->Attributes |= WIN_USE_WAIT;
308 *handle = win;
309 return CS_SUCCESS;
310 } /* pcmcia_get_window */
311 EXPORT_SYMBOL(pcmcia_get_window);
312
313
314 /** pccard_get_status
315 *
316 * Get the current socket state bits. We don't support the latched
317 * SocketState yet: I haven't seen any point for it.
318 */
319
320 int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
321 cs_status_t *status)
322 {
323 config_t *c;
324 int val;
325
326 s->ops->get_status(s, &val);
327 status->CardState = status->SocketState = 0;
328 status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
329 status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
330 status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
331 status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
332 if (s->state & SOCKET_SUSPEND)
333 status->CardState |= CS_EVENT_PM_SUSPEND;
334 if (!(s->state & SOCKET_PRESENT))
335 return CS_NO_CARD;
336
337 c = (s->config != NULL) ? &s->config[function] : NULL;
338 if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
339 (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
340 u_char reg;
341 if (c->Present & PRESENT_PIN_REPLACE) {
342 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
343 status->CardState |=
344 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
345 status->CardState |=
346 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
347 status->CardState |=
348 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
349 status->CardState |=
350 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
351 } else {
352 /* No PRR? Then assume we're always ready */
353 status->CardState |= CS_EVENT_READY_CHANGE;
354 }
355 if (c->Present & PRESENT_EXT_STATUS) {
356 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
357 status->CardState |=
358 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
359 }
360 return CS_SUCCESS;
361 }
362 status->CardState |=
363 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
364 status->CardState |=
365 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
366 status->CardState |=
367 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
368 status->CardState |=
369 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
370 return CS_SUCCESS;
371 } /* pccard_get_status */
372
373 int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
374 {
375 struct pcmcia_socket *s;
376 s = SOCKET(handle);
377 return pccard_get_status(s, handle->func, status);
378 }
379 EXPORT_SYMBOL(pcmcia_get_status);
380
381
382
383 /** pcmcia_get_mem_page
384 *
385 * Change the card address of an already open memory window.
386 */
387 int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
388 {
389 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
390 return CS_BAD_HANDLE;
391 req->Page = 0;
392 req->CardOffset = win->ctl.card_start;
393 return CS_SUCCESS;
394 } /* pcmcia_get_mem_page */
395 EXPORT_SYMBOL(pcmcia_get_mem_page);
396
397
398 int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
399 {
400 struct pcmcia_socket *s;
401 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
402 return CS_BAD_HANDLE;
403 if (req->Page != 0)
404 return CS_BAD_PAGE;
405 s = win->sock;
406 win->ctl.card_start = req->CardOffset;
407 if (s->ops->set_mem_map(s, &win->ctl) != 0)
408 return CS_BAD_OFFSET;
409 return CS_SUCCESS;
410 } /* pcmcia_map_mem_page */
411 EXPORT_SYMBOL(pcmcia_map_mem_page);
412
413
414 /** pcmcia_modify_configuration
415 *
416 * Modify a locked socket configuration
417 */
418 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
419 modconf_t *mod)
420 {
421 struct pcmcia_socket *s;
422 config_t *c;
423
424 s = p_dev->socket;
425 c = CONFIG(p_dev);
426 if (!(s->state & SOCKET_PRESENT))
427 return CS_NO_CARD;
428 if (!(c->state & CONFIG_LOCKED))
429 return CS_CONFIGURATION_LOCKED;
430
431 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
432 if (mod->Attributes & CONF_ENABLE_IRQ) {
433 c->Attributes |= CONF_ENABLE_IRQ;
434 s->socket.io_irq = s->irq.AssignedIRQ;
435 } else {
436 c->Attributes &= ~CONF_ENABLE_IRQ;
437 s->socket.io_irq = 0;
438 }
439 s->ops->set_socket(s, &s->socket);
440 }
441
442 if (mod->Attributes & CONF_VCC_CHANGE_VALID)
443 return CS_BAD_VCC;
444
445 /* We only allow changing Vpp1 and Vpp2 to the same value */
446 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
447 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
448 if (mod->Vpp1 != mod->Vpp2)
449 return CS_BAD_VPP;
450 s->socket.Vpp = mod->Vpp1;
451 if (s->ops->set_socket(s, &s->socket))
452 return CS_BAD_VPP;
453 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
454 (mod->Attributes & CONF_VPP2_CHANGE_VALID))
455 return CS_BAD_VPP;
456
457 return CS_SUCCESS;
458 } /* modify_configuration */
459 EXPORT_SYMBOL(pcmcia_modify_configuration);
460
461
462 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
463 {
464 pccard_io_map io = { 0, 0, 0, 0, 1 };
465 struct pcmcia_socket *s = p_dev->socket;
466 int i;
467
468 if (!(p_dev->state & CLIENT_CONFIG_LOCKED))
469 return CS_BAD_HANDLE;
470 p_dev->state &= ~CLIENT_CONFIG_LOCKED;
471
472 if (!(p_dev->state & CLIENT_STALE)) {
473 config_t *c = CONFIG(p_dev);
474 if (--(s->lock_count) == 0) {
475 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
476 s->socket.Vpp = 0;
477 s->socket.io_irq = 0;
478 s->ops->set_socket(s, &s->socket);
479 }
480 if (c->state & CONFIG_IO_REQ)
481 for (i = 0; i < MAX_IO_WIN; i++) {
482 if (s->io[i].NumPorts == 0)
483 continue;
484 s->io[i].Config--;
485 if (s->io[i].Config != 0)
486 continue;
487 io.map = i;
488 s->ops->set_io_map(s, &io);
489 }
490 c->state &= ~CONFIG_LOCKED;
491 }
492
493 return CS_SUCCESS;
494 } /* pcmcia_release_configuration */
495 EXPORT_SYMBOL(pcmcia_release_configuration);
496
497
498 /** pcmcia_release_io
499 *
500 * Release_io() releases the I/O ranges allocated by a client. This
501 * may be invoked some time after a card ejection has already dumped
502 * the actual socket configuration, so if the client is "stale", we
503 * don't bother checking the port ranges against the current socket
504 * values.
505 */
506 int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
507 {
508 struct pcmcia_socket *s = p_dev->socket;
509
510 if (!(p_dev->state & CLIENT_IO_REQ))
511 return CS_BAD_HANDLE;
512 p_dev->state &= ~CLIENT_IO_REQ;
513
514 if (!(p_dev->state & CLIENT_STALE)) {
515 config_t *c = CONFIG(p_dev);
516 if (c->state & CONFIG_LOCKED)
517 return CS_CONFIGURATION_LOCKED;
518 if ((c->io.BasePort1 != req->BasePort1) ||
519 (c->io.NumPorts1 != req->NumPorts1) ||
520 (c->io.BasePort2 != req->BasePort2) ||
521 (c->io.NumPorts2 != req->NumPorts2))
522 return CS_BAD_ARGS;
523 c->state &= ~CONFIG_IO_REQ;
524 }
525
526 release_io_space(s, req->BasePort1, req->NumPorts1);
527 if (req->NumPorts2)
528 release_io_space(s, req->BasePort2, req->NumPorts2);
529
530 return CS_SUCCESS;
531 } /* pcmcia_release_io */
532 EXPORT_SYMBOL(pcmcia_release_io);
533
534
535 int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
536 {
537 struct pcmcia_socket *s = p_dev->socket;
538 if (!(p_dev->state & CLIENT_IRQ_REQ))
539 return CS_BAD_HANDLE;
540 p_dev->state &= ~CLIENT_IRQ_REQ;
541
542 if (!(p_dev->state & CLIENT_STALE)) {
543 config_t *c = CONFIG(p_dev);
544 if (c->state & CONFIG_LOCKED)
545 return CS_CONFIGURATION_LOCKED;
546 if (c->irq.Attributes != req->Attributes)
547 return CS_BAD_ATTRIBUTE;
548 if (s->irq.AssignedIRQ != req->AssignedIRQ)
549 return CS_BAD_IRQ;
550 if (--s->irq.Config == 0) {
551 c->state &= ~CONFIG_IRQ_REQ;
552 s->irq.AssignedIRQ = 0;
553 }
554 }
555
556 if (req->Attributes & IRQ_HANDLE_PRESENT) {
557 free_irq(req->AssignedIRQ, req->Instance);
558 }
559
560 #ifdef CONFIG_PCMCIA_PROBE
561 pcmcia_used_irq[req->AssignedIRQ]--;
562 #endif
563
564 return CS_SUCCESS;
565 } /* pcmcia_release_irq */
566 EXPORT_SYMBOL(pcmcia_release_irq);
567
568
569 int pcmcia_release_window(window_handle_t win)
570 {
571 struct pcmcia_socket *s;
572
573 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
574 return CS_BAD_HANDLE;
575 s = win->sock;
576 if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
577 return CS_BAD_HANDLE;
578
579 /* Shut down memory window */
580 win->ctl.flags &= ~MAP_ACTIVE;
581 s->ops->set_mem_map(s, &win->ctl);
582 s->state &= ~SOCKET_WIN_REQ(win->index);
583
584 /* Release system memory */
585 if (win->ctl.res) {
586 release_resource(win->ctl.res);
587 kfree(win->ctl.res);
588 win->ctl.res = NULL;
589 }
590 win->handle->state &= ~CLIENT_WIN_REQ(win->index);
591
592 win->magic = 0;
593
594 return CS_SUCCESS;
595 } /* pcmcia_release_window */
596 EXPORT_SYMBOL(pcmcia_release_window);
597
598
599 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
600 config_req_t *req)
601 {
602 int i;
603 u_int base;
604 struct pcmcia_socket *s = p_dev->socket;
605 config_t *c;
606 pccard_io_map iomap;
607
608 if (!(s->state & SOCKET_PRESENT))
609 return CS_NO_CARD;
610
611 if (req->IntType & INT_CARDBUS)
612 return CS_UNSUPPORTED_MODE;
613 c = CONFIG(p_dev);
614 if (c->state & CONFIG_LOCKED)
615 return CS_CONFIGURATION_LOCKED;
616
617 /* Do power control. We don't allow changes in Vcc. */
618 if (s->socket.Vcc != req->Vcc)
619 return CS_BAD_VCC;
620 if (req->Vpp1 != req->Vpp2)
621 return CS_BAD_VPP;
622 s->socket.Vpp = req->Vpp1;
623 if (s->ops->set_socket(s, &s->socket))
624 return CS_BAD_VPP;
625
626 /* Pick memory or I/O card, DMA mode, interrupt */
627 c->IntType = req->IntType;
628 c->Attributes = req->Attributes;
629 if (req->IntType & INT_MEMORY_AND_IO)
630 s->socket.flags |= SS_IOCARD;
631 if (req->IntType & INT_ZOOMED_VIDEO)
632 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
633 if (req->Attributes & CONF_ENABLE_DMA)
634 s->socket.flags |= SS_DMA_MODE;
635 if (req->Attributes & CONF_ENABLE_SPKR)
636 s->socket.flags |= SS_SPKR_ENA;
637 if (req->Attributes & CONF_ENABLE_IRQ)
638 s->socket.io_irq = s->irq.AssignedIRQ;
639 else
640 s->socket.io_irq = 0;
641 s->ops->set_socket(s, &s->socket);
642 s->lock_count++;
643
644 /* Set up CIS configuration registers */
645 base = c->ConfigBase = req->ConfigBase;
646 c->Present = c->CardValues = req->Present;
647 if (req->Present & PRESENT_COPY) {
648 c->Copy = req->Copy;
649 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
650 }
651 if (req->Present & PRESENT_OPTION) {
652 if (s->functions == 1) {
653 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
654 } else {
655 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
656 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
657 if (req->Present & PRESENT_IOBASE_0)
658 c->Option |= COR_ADDR_DECODE;
659 }
660 if (c->state & CONFIG_IRQ_REQ)
661 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
662 c->Option |= COR_LEVEL_REQ;
663 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
664 mdelay(40);
665 }
666 if (req->Present & PRESENT_STATUS) {
667 c->Status = req->Status;
668 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
669 }
670 if (req->Present & PRESENT_PIN_REPLACE) {
671 c->Pin = req->Pin;
672 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
673 }
674 if (req->Present & PRESENT_EXT_STATUS) {
675 c->ExtStatus = req->ExtStatus;
676 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
677 }
678 if (req->Present & PRESENT_IOBASE_0) {
679 u_char b = c->io.BasePort1 & 0xff;
680 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
681 b = (c->io.BasePort1 >> 8) & 0xff;
682 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
683 }
684 if (req->Present & PRESENT_IOSIZE) {
685 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
686 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
687 }
688
689 /* Configure I/O windows */
690 if (c->state & CONFIG_IO_REQ) {
691 iomap.speed = io_speed;
692 for (i = 0; i < MAX_IO_WIN; i++)
693 if (s->io[i].NumPorts != 0) {
694 iomap.map = i;
695 iomap.flags = MAP_ACTIVE;
696 switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
697 case IO_DATA_PATH_WIDTH_16:
698 iomap.flags |= MAP_16BIT; break;
699 case IO_DATA_PATH_WIDTH_AUTO:
700 iomap.flags |= MAP_AUTOSZ; break;
701 default:
702 break;
703 }
704 iomap.start = s->io[i].BasePort;
705 iomap.stop = iomap.start + s->io[i].NumPorts - 1;
706 s->ops->set_io_map(s, &iomap);
707 s->io[i].Config++;
708 }
709 }
710
711 c->state |= CONFIG_LOCKED;
712 p_dev->state |= CLIENT_CONFIG_LOCKED;
713 return CS_SUCCESS;
714 } /* pcmcia_request_configuration */
715 EXPORT_SYMBOL(pcmcia_request_configuration);
716
717
718 /** pcmcia_request_io
719 *
720 * Request_io() reserves ranges of port addresses for a socket.
721 * I have not implemented range sharing or alias addressing.
722 */
723 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
724 {
725 struct pcmcia_socket *s = p_dev->socket;
726 config_t *c;
727
728 if (!(s->state & SOCKET_PRESENT))
729 return CS_NO_CARD;
730
731 if (!req)
732 return CS_UNSUPPORTED_MODE;
733 c = CONFIG(p_dev);
734 if (c->state & CONFIG_LOCKED)
735 return CS_CONFIGURATION_LOCKED;
736 if (c->state & CONFIG_IO_REQ)
737 return CS_IN_USE;
738 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
739 return CS_BAD_ATTRIBUTE;
740 if ((req->NumPorts2 > 0) &&
741 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
742 return CS_BAD_ATTRIBUTE;
743
744 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
745 req->NumPorts1, req->IOAddrLines))
746 return CS_IN_USE;
747
748 if (req->NumPorts2) {
749 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
750 req->NumPorts2, req->IOAddrLines)) {
751 release_io_space(s, req->BasePort1, req->NumPorts1);
752 return CS_IN_USE;
753 }
754 }
755
756 c->io = *req;
757 c->state |= CONFIG_IO_REQ;
758 p_dev->state |= CLIENT_IO_REQ;
759 return CS_SUCCESS;
760 } /* pcmcia_request_io */
761 EXPORT_SYMBOL(pcmcia_request_io);
762
763
764 /** pcmcia_request_irq
765 *
766 * Request_irq() reserves an irq for this client.
767 *
768 * Also, since Linux only reserves irq's when they are actually
769 * hooked, we don't guarantee that an irq will still be available
770 * when the configuration is locked. Now that I think about it,
771 * there might be a way to fix this using a dummy handler.
772 */
773
774 #ifdef CONFIG_PCMCIA_PROBE
775 static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
776 {
777 return IRQ_NONE;
778 }
779 #endif
780
781 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
782 {
783 struct pcmcia_socket *s = p_dev->socket;
784 config_t *c;
785 int ret = CS_IN_USE, irq = 0;
786
787 if (!(s->state & SOCKET_PRESENT))
788 return CS_NO_CARD;
789 c = CONFIG(p_dev);
790 if (c->state & CONFIG_LOCKED)
791 return CS_CONFIGURATION_LOCKED;
792 if (c->state & CONFIG_IRQ_REQ)
793 return CS_IN_USE;
794
795 #ifdef CONFIG_PCMCIA_PROBE
796 if (s->irq.AssignedIRQ != 0) {
797 /* If the interrupt is already assigned, it must be the same */
798 irq = s->irq.AssignedIRQ;
799 } else {
800 int try;
801 u32 mask = s->irq_mask;
802 void *data = &p_dev->dev.driver; /* something unique to this device */
803
804 for (try = 0; try < 64; try++) {
805 irq = try % 32;
806
807 /* marked as available by driver, and not blocked by userspace? */
808 if (!((mask >> irq) & 1))
809 continue;
810
811 /* avoid an IRQ which is already used by a PCMCIA card */
812 if ((try < 32) && pcmcia_used_irq[irq])
813 continue;
814
815 /* register the correct driver, if possible, of check whether
816 * registering a dummy handle works, i.e. if the IRQ isn't
817 * marked as used by the kernel resource management core */
818 ret = request_irq(irq,
819 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
820 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
821 (s->functions > 1) ||
822 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
823 p_dev->devname,
824 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
825 if (!ret) {
826 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
827 free_irq(irq, data);
828 break;
829 }
830 }
831 }
832 #endif
833 /* only assign PCI irq if no IRQ already assigned */
834 if (ret && !s->irq.AssignedIRQ) {
835 if (!s->pci_irq)
836 return ret;
837 irq = s->pci_irq;
838 }
839
840 if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
841 if (request_irq(irq, req->Handler,
842 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
843 (s->functions > 1) ||
844 (irq == s->pci_irq)) ? SA_SHIRQ : 0,
845 p_dev->devname, req->Instance))
846 return CS_IN_USE;
847 }
848
849 c->irq.Attributes = req->Attributes;
850 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
851 s->irq.Config++;
852
853 c->state |= CONFIG_IRQ_REQ;
854 p_dev->state |= CLIENT_IRQ_REQ;
855
856 #ifdef CONFIG_PCMCIA_PROBE
857 pcmcia_used_irq[irq]++;
858 #endif
859
860 return CS_SUCCESS;
861 } /* pcmcia_request_irq */
862 EXPORT_SYMBOL(pcmcia_request_irq);
863
864
865 /** pcmcia_request_window
866 *
867 * Request_window() establishes a mapping between card memory space
868 * and system memory space.
869 */
870 int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
871 {
872 struct pcmcia_socket *s = (*p_dev)->socket;
873 window_t *win;
874 u_long align;
875 int w;
876
877 if (!(s->state & SOCKET_PRESENT))
878 return CS_NO_CARD;
879 if (req->Attributes & (WIN_PAGED | WIN_SHARED))
880 return CS_BAD_ATTRIBUTE;
881
882 /* Window size defaults to smallest available */
883 if (req->Size == 0)
884 req->Size = s->map_size;
885 align = (((s->features & SS_CAP_MEM_ALIGN) ||
886 (req->Attributes & WIN_STRICT_ALIGN)) ?
887 req->Size : s->map_size);
888 if (req->Size & (s->map_size-1))
889 return CS_BAD_SIZE;
890 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
891 (req->Base & (align-1)))
892 return CS_BAD_BASE;
893 if (req->Base)
894 align = 0;
895
896 /* Allocate system memory window */
897 for (w = 0; w < MAX_WIN; w++)
898 if (!(s->state & SOCKET_WIN_REQ(w))) break;
899 if (w == MAX_WIN)
900 return CS_OUT_OF_RESOURCE;
901
902 win = &s->win[w];
903 win->magic = WINDOW_MAGIC;
904 win->index = w;
905 win->handle = *p_dev;
906 win->sock = s;
907
908 if (!(s->features & SS_CAP_STATIC_MAP)) {
909 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
910 (req->Attributes & WIN_MAP_BELOW_1MB), s);
911 if (!win->ctl.res)
912 return CS_IN_USE;
913 }
914 (*p_dev)->state |= CLIENT_WIN_REQ(w);
915
916 /* Configure the socket controller */
917 win->ctl.map = w+1;
918 win->ctl.flags = 0;
919 win->ctl.speed = req->AccessSpeed;
920 if (req->Attributes & WIN_MEMORY_TYPE)
921 win->ctl.flags |= MAP_ATTRIB;
922 if (req->Attributes & WIN_ENABLE)
923 win->ctl.flags |= MAP_ACTIVE;
924 if (req->Attributes & WIN_DATA_WIDTH_16)
925 win->ctl.flags |= MAP_16BIT;
926 if (req->Attributes & WIN_USE_WAIT)
927 win->ctl.flags |= MAP_USE_WAIT;
928 win->ctl.card_start = 0;
929 if (s->ops->set_mem_map(s, &win->ctl) != 0)
930 return CS_BAD_ARGS;
931 s->state |= SOCKET_WIN_REQ(w);
932
933 /* Return window handle */
934 if (s->features & SS_CAP_STATIC_MAP) {
935 req->Base = win->ctl.static_start;
936 } else {
937 req->Base = win->ctl.res->start;
938 }
939 *wh = win;
940
941 return CS_SUCCESS;
942 } /* pcmcia_request_window */
943 EXPORT_SYMBOL(pcmcia_request_window);
Support for the Chinese Samsung S3C2440 based development boards