Remove obsolete #include <linux/config.h>
[linux-3.10.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) &&
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);