b9201c2ec38b3d15523a09ac8ee3a3af35ddddcc
[linux-2.6.git] / drivers / pcmcia / pcmcia_resource.c
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) && *base &&
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         config->Attributes = c->Attributes | CONF_VALID_CLIENT;
249         config->Vcc = s->socket.Vcc;
250         config->Vpp1 = config->Vpp2 = s->socket.Vpp;
251         config->IntType = c->IntType;
252         config->ConfigBase = c->ConfigBase;
253         config->Status = c->Status;
254         config->Pin = c->Pin;
255         config->Copy = c->Copy;
256         config->Option = c->Option;
257         config->ExtStatus = c->ExtStatus;
258         config->Present = config->CardValues = c->CardValues;
259         config->IRQAttributes = c->irq.Attributes;
260         config->AssignedIRQ = s->irq.AssignedIRQ;
261         config->BasePort1 = c->io.BasePort1;
262         config->NumPorts1 = c->io.NumPorts1;
263         config->Attributes1 = c->io.Attributes1;
264         config->BasePort2 = c->io.BasePort2;
265         config->NumPorts2 = c->io.NumPorts2;
266         config->Attributes2 = c->io.Attributes2;
267         config->IOAddrLines = c->io.IOAddrLines;
268
269         return CS_SUCCESS;
270 } /* pccard_get_configuration_info */
271
272 int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
273                                   config_info_t *config)
274 {
275         return pccard_get_configuration_info(p_dev->socket, p_dev,
276                                              config);
277 }
278 EXPORT_SYMBOL(pcmcia_get_configuration_info);
279
280
281 /** pcmcia_get_window
282  */
283 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
284                       int idx, win_req_t *req)
285 {
286         window_t *win;
287         int w;
288
289         if (!s || !(s->state & SOCKET_PRESENT))
290                 return CS_NO_CARD;
291         for (w = idx; w < MAX_WIN; w++)
292                 if (s->state & SOCKET_WIN_REQ(w))
293                         break;
294         if (w == MAX_WIN)
295                 return CS_NO_MORE_ITEMS;
296         win = &s->win[w];
297         req->Base = win->ctl.res->start;
298         req->Size = win->ctl.res->end - win->ctl.res->start + 1;
299         req->AccessSpeed = win->ctl.speed;
300         req->Attributes = 0;
301         if (win->ctl.flags & MAP_ATTRIB)
302                 req->Attributes |= WIN_MEMORY_TYPE_AM;
303         if (win->ctl.flags & MAP_ACTIVE)
304                 req->Attributes |= WIN_ENABLE;
305         if (win->ctl.flags & MAP_16BIT)
306                 req->Attributes |= WIN_DATA_WIDTH_16;
307         if (win->ctl.flags & MAP_USE_WAIT)
308                 req->Attributes |= WIN_USE_WAIT;
309         *handle = win;
310         return CS_SUCCESS;
311 } /* pcmcia_get_window */
312 EXPORT_SYMBOL(pcmcia_get_window);
313
314
315 /** pccard_get_status
316  *
317  * Get the current socket state bits.  We don't support the latched
318  * SocketState yet: I haven't seen any point for it.
319  */
320
321 int pccard_get_status(struct pcmcia_socket *s, struct pcmcia_device *p_dev,
322                       cs_status_t *status)
323 {
324         config_t *c;
325         int val;
326
327         s->ops->get_status(s, &val);
328         status->CardState = status->SocketState = 0;
329         status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
330         status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
331         status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
332         status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
333         if (s->state & SOCKET_SUSPEND)
334                 status->CardState |= CS_EVENT_PM_SUSPEND;
335         if (!(s->state & SOCKET_PRESENT))
336                 return CS_NO_CARD;
337
338         c = (p_dev) ? p_dev->function_config : NULL;
339
340         if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
341             (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
342                 u_char reg;
343                 if (c->CardValues & PRESENT_PIN_REPLACE) {
344                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
345                         status->CardState |=
346                                 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
347                         status->CardState |=
348                                 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
349                         status->CardState |=
350                                 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
351                         status->CardState |=
352                                 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
353                 } else {
354                         /* No PRR?  Then assume we're always ready */
355                         status->CardState |= CS_EVENT_READY_CHANGE;
356                 }
357                 if (c->CardValues & PRESENT_EXT_STATUS) {
358                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
359                         status->CardState |=
360                                 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
361                 }
362                 return CS_SUCCESS;
363         }
364         status->CardState |=
365                 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
366         status->CardState |=
367                 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
368         status->CardState |=
369                 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
370         status->CardState |=
371                 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
372         return CS_SUCCESS;
373 } /* pccard_get_status */
374
375 int pcmcia_get_status(struct pcmcia_device *p_dev, cs_status_t *status)
376 {
377         return pccard_get_status(p_dev->socket, p_dev, 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 = p_dev->function_config;
426
427         if (!(s->state & SOCKET_PRESENT))
428                 return CS_NO_CARD;
429         if (!(c->state & CONFIG_LOCKED))
430                 return CS_CONFIGURATION_LOCKED;
431
432         if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
433                 if (mod->Attributes & CONF_ENABLE_IRQ) {
434                         c->Attributes |= CONF_ENABLE_IRQ;
435                         s->socket.io_irq = s->irq.AssignedIRQ;
436                 } else {
437                         c->Attributes &= ~CONF_ENABLE_IRQ;
438                         s->socket.io_irq = 0;
439                 }
440                 s->ops->set_socket(s, &s->socket);
441         }
442
443         if (mod->Attributes & CONF_VCC_CHANGE_VALID)
444                 return CS_BAD_VCC;
445
446         /* We only allow changing Vpp1 and Vpp2 to the same value */
447         if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
448             (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
449                 if (mod->Vpp1 != mod->Vpp2)
450                         return CS_BAD_VPP;
451                 s->socket.Vpp = mod->Vpp1;
452                 if (s->ops->set_socket(s, &s->socket))
453                         return CS_BAD_VPP;
454         } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
455                    (mod->Attributes & CONF_VPP2_CHANGE_VALID))
456                 return CS_BAD_VPP;
457
458         if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
459                 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
460                 pccard_io_map io_on;
461                 int i;
462
463                 io_on.speed = io_speed;
464                 for (i = 0; i < MAX_IO_WIN; i++) {
465                         if (!s->io[i].res)
466                                 continue;
467                         io_off.map = i;
468                         io_on.map = i;
469
470                         io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
471                         io_on.start = s->io[i].res->start;
472                         io_on.stop = s->io[i].res->end;
473
474                         s->ops->set_io_map(s, &io_off);
475                         mdelay(40);
476                         s->ops->set_io_map(s, &io_on);
477                 }
478         }
479
480         return CS_SUCCESS;
481 } /* modify_configuration */
482 EXPORT_SYMBOL(pcmcia_modify_configuration);
483
484
485 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
486 {
487         pccard_io_map io = { 0, 0, 0, 0, 1 };
488         struct pcmcia_socket *s = p_dev->socket;
489         config_t *c = p_dev->function_config;
490         int i;
491
492         if (p_dev->_locked) {
493                 p_dev->_locked = 0;
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         }
501         if (c->state & CONFIG_LOCKED) {
502                 c->state &= ~CONFIG_LOCKED;
503                 if (c->state & CONFIG_IO_REQ)
504                         for (i = 0; i < MAX_IO_WIN; i++) {
505                                 if (!s->io[i].res)
506                                         continue;
507                                 s->io[i].Config--;
508                                 if (s->io[i].Config != 0)
509                                         continue;
510                                 io.map = i;
511                                 s->ops->set_io_map(s, &io);
512                         }
513         }
514
515         return CS_SUCCESS;
516 } /* pcmcia_release_configuration */
517
518
519 /** pcmcia_release_io
520  *
521  * Release_io() releases the I/O ranges allocated by a client.  This
522  * may be invoked some time after a card ejection has already dumped
523  * the actual socket configuration, so if the client is "stale", we
524  * don't bother checking the port ranges against the current socket
525  * values.
526  */
527 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
528 {
529         struct pcmcia_socket *s = p_dev->socket;
530         config_t *c = p_dev->function_config;
531
532         if (!p_dev->_io )
533                 return CS_BAD_HANDLE;
534
535         p_dev->_io = 0;
536
537         if ((c->io.BasePort1 != req->BasePort1) ||
538             (c->io.NumPorts1 != req->NumPorts1) ||
539             (c->io.BasePort2 != req->BasePort2) ||
540             (c->io.NumPorts2 != req->NumPorts2))
541                 return CS_BAD_ARGS;
542
543         c->state &= ~CONFIG_IO_REQ;
544
545         release_io_space(s, req->BasePort1, req->NumPorts1);
546         if (req->NumPorts2)
547                 release_io_space(s, req->BasePort2, req->NumPorts2);
548
549         return CS_SUCCESS;
550 } /* pcmcia_release_io */
551
552
553 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
554 {
555         struct pcmcia_socket *s = p_dev->socket;
556         config_t *c= p_dev->function_config;
557
558         if (!p_dev->_irq)
559                 return CS_BAD_HANDLE;
560         p_dev->_irq = 0;
561
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         if (req->Attributes & IRQ_HANDLE_PRESENT) {
574                 free_irq(req->AssignedIRQ, req->Instance);
575         }
576
577 #ifdef CONFIG_PCMCIA_PROBE
578         pcmcia_used_irq[req->AssignedIRQ]--;
579 #endif
580
581         return CS_SUCCESS;
582 } /* pcmcia_release_irq */
583
584
585 int pcmcia_release_window(window_handle_t win)
586 {
587         struct pcmcia_socket *s;
588
589         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
590                 return CS_BAD_HANDLE;
591         s = win->sock;
592         if (!(win->handle->_win & CLIENT_WIN_REQ(win->index)))
593                 return CS_BAD_HANDLE;
594
595         /* Shut down memory window */
596         win->ctl.flags &= ~MAP_ACTIVE;
597         s->ops->set_mem_map(s, &win->ctl);
598         s->state &= ~SOCKET_WIN_REQ(win->index);
599
600         /* Release system memory */
601         if (win->ctl.res) {
602                 release_resource(win->ctl.res);
603                 kfree(win->ctl.res);
604                 win->ctl.res = NULL;
605         }
606         win->handle->_win &= ~CLIENT_WIN_REQ(win->index);
607
608         win->magic = 0;
609
610         return CS_SUCCESS;
611 } /* pcmcia_release_window */
612 EXPORT_SYMBOL(pcmcia_release_window);
613
614
615 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
616                                  config_req_t *req)
617 {
618         int i;
619         u_int base;
620         struct pcmcia_socket *s = p_dev->socket;
621         config_t *c;
622         pccard_io_map iomap;
623
624         if (!(s->state & SOCKET_PRESENT))
625                 return CS_NO_CARD;
626
627         if (req->IntType & INT_CARDBUS)
628                 return CS_UNSUPPORTED_MODE;
629         c = p_dev->function_config;
630         if (c->state & CONFIG_LOCKED)
631                 return CS_CONFIGURATION_LOCKED;
632
633         /* Do power control.  We don't allow changes in Vcc. */
634         s->socket.Vpp = req->Vpp;
635         if (s->ops->set_socket(s, &s->socket))
636                 return CS_BAD_VPP;
637
638         /* Pick memory or I/O card, DMA mode, interrupt */
639         c->IntType = req->IntType;
640         c->Attributes = req->Attributes;
641         if (req->IntType & INT_MEMORY_AND_IO)
642                 s->socket.flags |= SS_IOCARD;
643         if (req->IntType & INT_ZOOMED_VIDEO)
644                 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
645         if (req->Attributes & CONF_ENABLE_DMA)
646                 s->socket.flags |= SS_DMA_MODE;
647         if (req->Attributes & CONF_ENABLE_SPKR)
648                 s->socket.flags |= SS_SPKR_ENA;
649         if (req->Attributes & CONF_ENABLE_IRQ)
650                 s->socket.io_irq = s->irq.AssignedIRQ;
651         else
652                 s->socket.io_irq = 0;
653         s->ops->set_socket(s, &s->socket);
654         s->lock_count++;
655
656         /* Set up CIS configuration registers */
657         base = c->ConfigBase = req->ConfigBase;
658         c->CardValues = req->Present;
659         if (req->Present & PRESENT_COPY) {
660                 c->Copy = req->Copy;
661                 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
662         }
663         if (req->Present & PRESENT_OPTION) {
664                 if (s->functions == 1) {
665                         c->Option = req->ConfigIndex & COR_CONFIG_MASK;
666                 } else {
667                         c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
668                         c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
669                         if (req->Present & PRESENT_IOBASE_0)
670                                 c->Option |= COR_ADDR_DECODE;
671                 }
672                 if (c->state & CONFIG_IRQ_REQ)
673                         if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
674                                 c->Option |= COR_LEVEL_REQ;
675                 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
676                 mdelay(40);
677         }
678         if (req->Present & PRESENT_STATUS) {
679                 c->Status = req->Status;
680                 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
681         }
682         if (req->Present & PRESENT_PIN_REPLACE) {
683                 c->Pin = req->Pin;
684                 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
685         }
686         if (req->Present & PRESENT_EXT_STATUS) {
687                 c->ExtStatus = req->ExtStatus;
688                 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
689         }
690         if (req->Present & PRESENT_IOBASE_0) {
691                 u_char b = c->io.BasePort1 & 0xff;
692                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
693                 b = (c->io.BasePort1 >> 8) & 0xff;
694                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
695         }
696         if (req->Present & PRESENT_IOSIZE) {
697                 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
698                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
699         }
700
701         /* Configure I/O windows */
702         if (c->state & CONFIG_IO_REQ) {
703                 iomap.speed = io_speed;
704                 for (i = 0; i < MAX_IO_WIN; i++)
705                         if (s->io[i].res) {
706                                 iomap.map = i;
707                                 iomap.flags = MAP_ACTIVE;
708                                 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
709                                 case IO_DATA_PATH_WIDTH_16:
710                                         iomap.flags |= MAP_16BIT; break;
711                                 case IO_DATA_PATH_WIDTH_AUTO:
712                                         iomap.flags |= MAP_AUTOSZ; break;
713                                 default:
714                                         break;
715                                 }
716                                 iomap.start = s->io[i].res->start;
717                                 iomap.stop = s->io[i].res->end;
718                                 s->ops->set_io_map(s, &iomap);
719                                 s->io[i].Config++;
720                         }
721         }
722
723         c->state |= CONFIG_LOCKED;
724         p_dev->_locked = 1;
725         return CS_SUCCESS;
726 } /* pcmcia_request_configuration */
727 EXPORT_SYMBOL(pcmcia_request_configuration);
728
729
730 /** pcmcia_request_io
731  *
732  * Request_io() reserves ranges of port addresses for a socket.
733  * I have not implemented range sharing or alias addressing.
734  */
735 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
736 {
737         struct pcmcia_socket *s = p_dev->socket;
738         config_t *c;
739
740         if (!(s->state & SOCKET_PRESENT))
741                 return CS_NO_CARD;
742
743         if (!req)
744                 return CS_UNSUPPORTED_MODE;
745         c = p_dev->function_config;
746         if (c->state & CONFIG_LOCKED)
747                 return CS_CONFIGURATION_LOCKED;
748         if (c->state & CONFIG_IO_REQ)
749                 return CS_IN_USE;
750         if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
751                 return CS_BAD_ATTRIBUTE;
752         if ((req->NumPorts2 > 0) &&
753             (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
754                 return CS_BAD_ATTRIBUTE;
755
756         if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
757                            req->NumPorts1, req->IOAddrLines))
758                 return CS_IN_USE;
759
760         if (req->NumPorts2) {
761                 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
762                                    req->NumPorts2, req->IOAddrLines)) {
763                         release_io_space(s, req->BasePort1, req->NumPorts1);
764                         return CS_IN_USE;
765                 }
766         }
767
768         c->io = *req;
769         c->state |= CONFIG_IO_REQ;
770         p_dev->_io = 1;
771         return CS_SUCCESS;
772 } /* pcmcia_request_io */
773 EXPORT_SYMBOL(pcmcia_request_io);
774
775
776 /** pcmcia_request_irq
777  *
778  * Request_irq() reserves an irq for this client.
779  *
780  * Also, since Linux only reserves irq's when they are actually
781  * hooked, we don't guarantee that an irq will still be available
782  * when the configuration is locked.  Now that I think about it,
783  * there might be a way to fix this using a dummy handler.
784  */
785
786 #ifdef CONFIG_PCMCIA_PROBE
787 static irqreturn_t test_action(int cpl, void *dev_id)
788 {
789         return IRQ_NONE;
790 }
791 #endif
792
793 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
794 {
795         struct pcmcia_socket *s = p_dev->socket;
796         config_t *c;
797         int ret = CS_IN_USE, irq = 0;
798         int type;
799
800         if (!(s->state & SOCKET_PRESENT))
801                 return CS_NO_CARD;
802         c = p_dev->function_config;
803         if (c->state & CONFIG_LOCKED)
804                 return CS_CONFIGURATION_LOCKED;
805         if (c->state & CONFIG_IRQ_REQ)
806                 return CS_IN_USE;
807
808         /* Decide what type of interrupt we are registering */
809         type = 0;
810         if (s->functions > 1)           /* All of this ought to be handled higher up */
811                 type = IRQF_SHARED;
812         if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
813                 type = IRQF_SHARED;
814
815 #ifdef CONFIG_PCMCIA_PROBE
816         if (s->irq.AssignedIRQ != 0) {
817                 /* If the interrupt is already assigned, it must be the same */
818                 irq = s->irq.AssignedIRQ;
819         } else {
820                 int try;
821                 u32 mask = s->irq_mask;
822                 void *data = &p_dev->dev.driver; /* something unique to this device */
823
824                 for (try = 0; try < 64; try++) {
825                         irq = try % 32;
826
827                         /* marked as available by driver, and not blocked by userspace? */
828                         if (!((mask >> irq) & 1))
829                                 continue;
830
831                         /* avoid an IRQ which is already used by a PCMCIA card */
832                         if ((try < 32) && pcmcia_used_irq[irq])
833                                 continue;
834
835                         /* register the correct driver, if possible, of check whether
836                          * registering a dummy handle works, i.e. if the IRQ isn't
837                          * marked as used by the kernel resource management core */
838                         ret = request_irq(irq,
839                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
840                                           type,
841                                           p_dev->devname,
842                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
843                         if (!ret) {
844                                 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
845                                         free_irq(irq, data);
846                                 break;
847                         }
848                 }
849         }
850 #endif
851         /* only assign PCI irq if no IRQ already assigned */
852         if (ret && !s->irq.AssignedIRQ) {
853                 if (!s->pci_irq)
854                         return ret;
855                 type = IRQF_SHARED;
856                 irq = s->pci_irq;
857         }
858
859         if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) {
860                 if (request_irq(irq, req->Handler, type,  p_dev->devname, req->Instance))
861                         return CS_IN_USE;
862         }
863
864         /* Make sure the fact the request type was overridden is passed back */
865         if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
866                 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
867                 printk(KERN_WARNING "pcmcia: request for exclusive IRQ could not be fulfilled.\n");
868                 printk(KERN_WARNING "pcmcia: the driver needs updating to supported shared IRQ lines.\n");
869         }
870         c->irq.Attributes = req->Attributes;
871         s->irq.AssignedIRQ = req->AssignedIRQ = irq;
872         s->irq.Config++;
873
874         c->state |= CONFIG_IRQ_REQ;
875         p_dev->_irq = 1;
876
877 #ifdef CONFIG_PCMCIA_PROBE
878         pcmcia_used_irq[irq]++;
879 #endif
880
881         return CS_SUCCESS;
882 } /* pcmcia_request_irq */
883 EXPORT_SYMBOL(pcmcia_request_irq);
884
885
886 /** pcmcia_request_window
887  *
888  * Request_window() establishes a mapping between card memory space
889  * and system memory space.
890  */
891 int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
892 {
893         struct pcmcia_socket *s = (*p_dev)->socket;
894         window_t *win;
895         u_long align;
896         int w;
897
898         if (!(s->state & SOCKET_PRESENT))
899                 return CS_NO_CARD;
900         if (req->Attributes & (WIN_PAGED | WIN_SHARED))
901                 return CS_BAD_ATTRIBUTE;
902
903         /* Window size defaults to smallest available */
904         if (req->Size == 0)
905                 req->Size = s->map_size;
906         align = (((s->features & SS_CAP_MEM_ALIGN) ||
907                   (req->Attributes & WIN_STRICT_ALIGN)) ?
908                  req->Size : s->map_size);
909         if (req->Size & (s->map_size-1))
910                 return CS_BAD_SIZE;
911         if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
912             (req->Base & (align-1)))
913                 return CS_BAD_BASE;
914         if (req->Base)
915                 align = 0;
916
917         /* Allocate system memory window */
918         for (w = 0; w < MAX_WIN; w++)
919                 if (!(s->state & SOCKET_WIN_REQ(w))) break;
920         if (w == MAX_WIN)
921                 return CS_OUT_OF_RESOURCE;
922
923         win = &s->win[w];
924         win->magic = WINDOW_MAGIC;
925         win->index = w;
926         win->handle = *p_dev;
927         win->sock = s;
928
929         if (!(s->features & SS_CAP_STATIC_MAP)) {
930                 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
931                                                       (req->Attributes & WIN_MAP_BELOW_1MB), s);
932                 if (!win->ctl.res)
933                         return CS_IN_USE;
934         }
935         (*p_dev)->_win |= CLIENT_WIN_REQ(w);
936
937         /* Configure the socket controller */
938         win->ctl.map = w+1;
939         win->ctl.flags = 0;
940         win->ctl.speed = req->AccessSpeed;
941         if (req->Attributes & WIN_MEMORY_TYPE)
942                 win->ctl.flags |= MAP_ATTRIB;
943         if (req->Attributes & WIN_ENABLE)
944                 win->ctl.flags |= MAP_ACTIVE;
945         if (req->Attributes & WIN_DATA_WIDTH_16)
946                 win->ctl.flags |= MAP_16BIT;
947         if (req->Attributes & WIN_USE_WAIT)
948                 win->ctl.flags |= MAP_USE_WAIT;
949         win->ctl.card_start = 0;
950         if (s->ops->set_mem_map(s, &win->ctl) != 0)
951                 return CS_BAD_ARGS;
952         s->state |= SOCKET_WIN_REQ(w);
953
954         /* Return window handle */
955         if (s->features & SS_CAP_STATIC_MAP) {
956                 req->Base = win->ctl.static_start;
957         } else {
958                 req->Base = win->ctl.res->start;
959         }
960         *wh = win;
961
962         return CS_SUCCESS;
963 } /* pcmcia_request_window */
964 EXPORT_SYMBOL(pcmcia_request_window);
965
966 void pcmcia_disable_device(struct pcmcia_device *p_dev) {
967         pcmcia_release_configuration(p_dev);
968         pcmcia_release_io(p_dev, &p_dev->io);
969         pcmcia_release_irq(p_dev, &p_dev->irq);
970         if (&p_dev->win)
971                 pcmcia_release_window(p_dev->win);
972 }
973 EXPORT_SYMBOL(pcmcia_disable_device);