[PATCH] pcmcia: use bitfield instead of p_state and state
[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                 s->io[0].res->flags = (s->io[0].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
92                 return 0;
93         }
94         /* Check for an already-allocated window that must conflict with
95          * what was asked for.  It is a hack because it does not catch all
96          * potential conflicts, just the most obvious ones.
97          */
98         for (i = 0; i < MAX_IO_WIN; i++)
99                 if ((s->io[i].res) &&
100                     ((s->io[i].res->start & (align-1)) == *base))
101                         return 1;
102         for (i = 0; i < MAX_IO_WIN; i++) {
103                 if (!s->io[i].res) {
104                         s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
105                         if (s->io[i].res) {
106                                 *base = s->io[i].res->start;
107                                 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
108                                 s->io[i].InUse = num;
109                                 break;
110                         } else
111                                 return 1;
112                 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
113                         continue;
114                 /* Try to extend top of window */
115                 try = s->io[i].res->end + 1;
116                 if ((*base == 0) || (*base == try))
117                         if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
118                                                     s->io[i].res->end + num, s) == 0) {
119                                 *base = try;
120                                 s->io[i].InUse += num;
121                                 break;
122                         }
123                 /* Try to extend bottom of window */
124                 try = s->io[i].res->start - num;
125                 if ((*base == 0) || (*base == try))
126                         if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
127                                                     s->io[i].res->end, s) == 0) {
128                                 *base = try;
129                                 s->io[i].InUse += num;
130                                 break;
131                         }
132         }
133         return (i == MAX_IO_WIN);
134 } /* alloc_io_space */
135
136
137 static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
138                              ioaddr_t num)
139 {
140         int i;
141
142         for (i = 0; i < MAX_IO_WIN; i++) {
143                 if (!s->io[i].res)
144                         continue;
145                 if ((s->io[i].res->start <= base) &&
146                     (s->io[i].res->end >= base+num-1)) {
147                         s->io[i].InUse -= num;
148                         /* Free the window if no one else is using it */
149                         if (s->io[i].InUse == 0) {
150                                 release_resource(s->io[i].res);
151                                 kfree(s->io[i].res);
152                                 s->io[i].res = NULL;
153                         }
154                 }
155         }
156 } /* release_io_space */
157
158
159 /** pccard_access_configuration_register
160  *
161  * Access_configuration_register() reads and writes configuration
162  * registers in attribute memory.  Memory window 0 is reserved for
163  * this and the tuple reading services.
164  */
165
166 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
167                                          conf_reg_t *reg)
168 {
169         struct pcmcia_socket *s;
170         config_t *c;
171         int addr;
172         u_char val;
173
174         if (!p_dev || !p_dev->function_config)
175                 return CS_NO_CARD;
176
177         s = p_dev->socket;
178         c = p_dev->function_config;
179
180         if (!(c->state & CONFIG_LOCKED))
181                 return CS_CONFIGURATION_LOCKED;
182
183         addr = (c->ConfigBase + reg->Offset) >> 1;
184
185         switch (reg->Action) {
186         case CS_READ:
187                 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
188                 reg->Value = val;
189                 break;
190         case CS_WRITE:
191                 val = reg->Value;
192                 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
193                 break;
194         default:
195                 return CS_BAD_ARGS;
196                 break;
197         }
198         return CS_SUCCESS;
199 } /* pcmcia_access_configuration_register */
200 EXPORT_SYMBOL(pcmcia_access_configuration_register);
201
202
203 int pccard_get_configuration_info(struct pcmcia_socket *s,
204                                   struct pcmcia_device *p_dev,
205                                   config_info_t *config)
206 {
207         config_t *c;
208
209         if (!(s->state & SOCKET_PRESENT))
210                 return CS_NO_CARD;
211
212         config->Function = p_dev->func;
213
214 #ifdef CONFIG_CARDBUS
215         if (s->state & SOCKET_CARDBUS) {
216                 memset(config, 0, sizeof(config_info_t));
217                 config->Vcc = s->socket.Vcc;
218                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
219                 config->Option = s->cb_dev->subordinate->number;
220                 if (s->state & SOCKET_CARDBUS_CONFIG) {
221                         config->Attributes = CONF_VALID_CLIENT;
222                         config->IntType = INT_CARDBUS;
223                         config->AssignedIRQ = s->irq.AssignedIRQ;
224                         if (config->AssignedIRQ)
225                                 config->Attributes |= CONF_ENABLE_IRQ;
226                         config->BasePort1 = s->io[0].res->start;
227                         config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1;
228                 }
229                 return CS_SUCCESS;
230         }
231 #endif
232
233         c = (p_dev) ? p_dev->function_config : NULL;
234
235         if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
236                 config->Attributes = 0;
237                 config->Vcc = s->socket.Vcc;
238                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
239                 return CS_SUCCESS;
240         }
241
242         /* !!! This is a hack !!! */
243         memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
244         config->Attributes |= CONF_VALID_CLIENT;
245         config->CardValues = c->CardValues;
246         config->IRQAttributes = c->irq.Attributes;
247         config->AssignedIRQ = s->irq.AssignedIRQ;
248         config->BasePort1 = c->io.BasePort1;
249         config->NumPorts1 = c->io.NumPorts1;
250         config->Attributes1 = c->io.Attributes1;
251         config->BasePort2 = c->io.BasePort2;
252         config->NumPorts2 = c->io.NumPorts2;
253         config->Attributes2 = c->io.Attributes2;
254         config->IOAddrLines = c->io.IOAddrLines;
255
256         return CS_SUCCESS;
257 } /* pccard_get_configuration_info */
258
259 int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
260                                   config_info_t *config)
261 {
262         return pccard_get_configuration_info(p_dev->socket, p_dev,
263                                              config);
264 }
265 EXPORT_SYMBOL(pcmcia_get_configuration_info);
266
267
268 /** pcmcia_get_window
269  */
270 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
271                       int idx, win_req_t *req)
272 {
273         window_t *win;
274         int w;
275
276         if (!s || !(s->state & SOCKET_PRESENT))
277                 return CS_NO_CARD;
278         for (w = idx; w < MAX_WIN; w++)
279                 if (s->state & SOCKET_WIN_REQ(w))
280                         break;
281         if (w == MAX_WIN)
282                 return CS_NO_MORE_ITEMS;
283         win = &s->win[w];
284         req->Base = win->ctl.res->start;
285         req->Size = win->ctl.res->end - win->ctl.res->start + 1;
286         req->AccessSpeed = win->ctl.speed;
287         req->Attributes = 0;
288         if (win->ctl.flags & MAP_ATTRIB)
289                 req->Attributes |= WIN_MEMORY_TYPE_AM;
290         if (win->ctl.flags & MAP_ACTIVE)
291                 req->Attributes |= WIN_ENABLE;
292         if (win->ctl.flags & MAP_16BIT)
293                 req->Attributes |= WIN_DATA_WIDTH_16;
294         if (win->ctl.flags & MAP_USE_WAIT)
295                 req->Attributes |= WIN_USE_WAIT;
296         *handle = win;
297         return CS_SUCCESS;
298 } /* pcmcia_get_window */
299 EXPORT_SYMBOL(pcmcia_get_window);
300
301
302 /** pccard_get_status
303  *
304  * Get the current socket state bits.  We don't support the latched
305  * SocketState yet: I haven't seen any point for it.
306  */
307
308 int pccard_get_status(struct pcmcia_socket *s, struct pcmcia_device *p_dev,
309                       cs_status_t *status)
310 {
311         config_t *c;
312         int val;
313
314         s->ops->get_status(s, &val);
315         status->CardState = status->SocketState = 0;
316         status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
317         status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
318         status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
319         status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
320         if (s->state & SOCKET_SUSPEND)
321                 status->CardState |= CS_EVENT_PM_SUSPEND;
322         if (!(s->state & SOCKET_PRESENT))
323                 return CS_NO_CARD;
324
325         c = (p_dev) ? p_dev->function_config : NULL;
326
327         if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
328             (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
329                 u_char reg;
330                 if (c->CardValues & PRESENT_PIN_REPLACE) {
331                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
332                         status->CardState |=
333                                 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
334                         status->CardState |=
335                                 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
336                         status->CardState |=
337                                 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
338                         status->CardState |=
339                                 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
340                 } else {
341                         /* No PRR?  Then assume we're always ready */
342                         status->CardState |= CS_EVENT_READY_CHANGE;
343                 }
344                 if (c->CardValues & PRESENT_EXT_STATUS) {
345                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
346                         status->CardState |=
347                                 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
348                 }
349                 return CS_SUCCESS;
350         }
351         status->CardState |=
352                 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
353         status->CardState |=
354                 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
355         status->CardState |=
356                 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
357         status->CardState |=
358                 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
359         return CS_SUCCESS;
360 } /* pccard_get_status */
361
362 int pcmcia_get_status(struct pcmcia_device *p_dev, cs_status_t *status)
363 {
364         return pccard_get_status(p_dev->socket, p_dev, status);
365 }
366 EXPORT_SYMBOL(pcmcia_get_status);
367
368
369
370 /** pcmcia_get_mem_page
371  *
372  * Change the card address of an already open memory window.
373  */
374 int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
375 {
376         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
377                 return CS_BAD_HANDLE;
378         req->Page = 0;
379         req->CardOffset = win->ctl.card_start;
380         return CS_SUCCESS;
381 } /* pcmcia_get_mem_page */
382 EXPORT_SYMBOL(pcmcia_get_mem_page);
383
384
385 int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
386 {
387         struct pcmcia_socket *s;
388         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
389                 return CS_BAD_HANDLE;
390         if (req->Page != 0)
391                 return CS_BAD_PAGE;
392         s = win->sock;
393         win->ctl.card_start = req->CardOffset;
394         if (s->ops->set_mem_map(s, &win->ctl) != 0)
395                 return CS_BAD_OFFSET;
396         return CS_SUCCESS;
397 } /* pcmcia_map_mem_page */
398 EXPORT_SYMBOL(pcmcia_map_mem_page);
399
400
401 /** pcmcia_modify_configuration
402  *
403  * Modify a locked socket configuration
404  */
405 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
406                                 modconf_t *mod)
407 {
408         struct pcmcia_socket *s;
409         config_t *c;
410
411         s = p_dev->socket;
412         c = p_dev->function_config;
413
414         if (!(s->state & SOCKET_PRESENT))
415                 return CS_NO_CARD;
416         if (!(c->state & CONFIG_LOCKED))
417                 return CS_CONFIGURATION_LOCKED;
418
419         if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
420                 if (mod->Attributes & CONF_ENABLE_IRQ) {
421                         c->Attributes |= CONF_ENABLE_IRQ;
422                         s->socket.io_irq = s->irq.AssignedIRQ;
423                 } else {
424                         c->Attributes &= ~CONF_ENABLE_IRQ;
425                         s->socket.io_irq = 0;
426                 }
427                 s->ops->set_socket(s, &s->socket);
428         }
429
430         if (mod->Attributes & CONF_VCC_CHANGE_VALID)
431                 return CS_BAD_VCC;
432
433         /* We only allow changing Vpp1 and Vpp2 to the same value */
434         if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
435             (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
436                 if (mod->Vpp1 != mod->Vpp2)
437                         return CS_BAD_VPP;
438                 s->socket.Vpp = mod->Vpp1;
439                 if (s->ops->set_socket(s, &s->socket))
440                         return CS_BAD_VPP;
441         } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
442                    (mod->Attributes & CONF_VPP2_CHANGE_VALID))
443                 return CS_BAD_VPP;
444
445         if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
446                 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
447                 pccard_io_map io_on;
448                 int i;
449
450                 io_on.speed = io_speed;
451                 for (i = 0; i < MAX_IO_WIN; i++) {
452                         if (!s->io[i].res)
453                                 continue;
454                         io_off.map = i;
455                         io_on.map = i;
456
457                         io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
458                         io_on.start = s->io[i].res->start;
459                         io_on.stop = s->io[i].res->end;
460
461                         s->ops->set_io_map(s, &io_off);
462                         mdelay(40);
463                         s->ops->set_io_map(s, &io_on);
464                 }
465         }
466
467         return CS_SUCCESS;
468 } /* modify_configuration */
469 EXPORT_SYMBOL(pcmcia_modify_configuration);
470
471
472 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
473 {
474         pccard_io_map io = { 0, 0, 0, 0, 1 };
475         struct pcmcia_socket *s = p_dev->socket;
476         config_t *c = p_dev->function_config;
477         int i;
478
479         if (p_dev->_locked) {
480                 p_dev->_locked = 0;
481                 if (--(s->lock_count) == 0) {
482                         s->socket.flags = SS_OUTPUT_ENA;   /* Is this correct? */
483                         s->socket.Vpp = 0;
484                         s->socket.io_irq = 0;
485                         s->ops->set_socket(s, &s->socket);
486                 }
487         }
488         if (c->state & CONFIG_LOCKED) {
489                 c->state &= ~CONFIG_LOCKED;
490                 if (c->state & CONFIG_IO_REQ)
491                         for (i = 0; i < MAX_IO_WIN; i++) {
492                                 if (!s->io[i].res)
493                                         continue;
494                                 s->io[i].Config--;
495                                 if (s->io[i].Config != 0)
496                                         continue;
497                                 io.map = i;
498                                 s->ops->set_io_map(s, &io);
499                         }
500         }
501
502         return CS_SUCCESS;
503 } /* pcmcia_release_configuration */
504
505
506 /** pcmcia_release_io
507  *
508  * Release_io() releases the I/O ranges allocated by a client.  This
509  * may be invoked some time after a card ejection has already dumped
510  * the actual socket configuration, so if the client is "stale", we
511  * don't bother checking the port ranges against the current socket
512  * values.
513  */
514 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
515 {
516         struct pcmcia_socket *s = p_dev->socket;
517         config_t *c = p_dev->function_config;
518
519         if (!p_dev->_io )
520                 return CS_BAD_HANDLE;
521
522         p_dev->_io = 0;
523
524         if ((c->io.BasePort1 != req->BasePort1) ||
525             (c->io.NumPorts1 != req->NumPorts1) ||
526             (c->io.BasePort2 != req->BasePort2) ||
527             (c->io.NumPorts2 != req->NumPorts2))
528                 return CS_BAD_ARGS;
529
530         c->state &= ~CONFIG_IO_REQ;
531
532         release_io_space(s, req->BasePort1, req->NumPorts1);
533         if (req->NumPorts2)
534                 release_io_space(s, req->BasePort2, req->NumPorts2);
535
536         return CS_SUCCESS;
537 } /* pcmcia_release_io */
538
539
540 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
541 {
542         struct pcmcia_socket *s = p_dev->socket;
543         config_t *c= p_dev->function_config;
544
545         if (!p_dev->_irq)
546                 return CS_BAD_HANDLE;
547         p_dev->_irq = 0;
548
549         if (c->state & CONFIG_LOCKED)
550                 return CS_CONFIGURATION_LOCKED;
551         if (c->irq.Attributes != req->Attributes)
552                 return CS_BAD_ATTRIBUTE;
553         if (s->irq.AssignedIRQ != req->AssignedIRQ)
554                 return CS_BAD_IRQ;
555         if (--s->irq.Config == 0) {
556                 c->state &= ~CONFIG_IRQ_REQ;
557                 s->irq.AssignedIRQ = 0;
558         }
559
560         if (req->Attributes & IRQ_HANDLE_PRESENT) {
561                 free_irq(req->AssignedIRQ, req->Instance);
562         }
563
564 #ifdef CONFIG_PCMCIA_PROBE
565         pcmcia_used_irq[req->AssignedIRQ]--;
566 #endif
567
568         return CS_SUCCESS;
569 } /* pcmcia_release_irq */
570
571
572 int pcmcia_release_window(window_handle_t win)
573 {
574         struct pcmcia_socket *s;
575
576         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
577                 return CS_BAD_HANDLE;
578         s = win->sock;
579         if (!(win->handle->_win & CLIENT_WIN_REQ(win->index)))
580                 return CS_BAD_HANDLE;
581
582         /* Shut down memory window */
583         win->ctl.flags &= ~MAP_ACTIVE;
584         s->ops->set_mem_map(s, &win->ctl);
585         s->state &= ~SOCKET_WIN_REQ(win->index);
586
587         /* Release system memory */
588         if (win->ctl.res) {
589                 release_resource(win->ctl.res);
590                 kfree(win->ctl.res);
591                 win->ctl.res = NULL;
592         }
593         win->handle->_win &= ~CLIENT_WIN_REQ(win->index);
594
595         win->magic = 0;
596
597         return CS_SUCCESS;
598 } /* pcmcia_release_window */
599 EXPORT_SYMBOL(pcmcia_release_window);
600
601
602 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
603                                  config_req_t *req)
604 {
605         int i;
606         u_int base;
607         struct pcmcia_socket *s = p_dev->socket;
608         config_t *c;
609         pccard_io_map iomap;
610
611         if (!(s->state & SOCKET_PRESENT))
612                 return CS_NO_CARD;
613
614         if (req->IntType & INT_CARDBUS)
615                 return CS_UNSUPPORTED_MODE;
616         c = p_dev->function_config;
617         if (c->state & CONFIG_LOCKED)
618                 return CS_CONFIGURATION_LOCKED;
619
620         /* Do power control.  We don't allow changes in Vcc. */
621         s->socket.Vpp = req->Vpp;
622         if (s->ops->set_socket(s, &s->socket))
623                 return CS_BAD_VPP;
624
625         /* Pick memory or I/O card, DMA mode, interrupt */
626         c->IntType = req->IntType;
627         c->Attributes = req->Attributes;
628         if (req->IntType & INT_MEMORY_AND_IO)
629                 s->socket.flags |= SS_IOCARD;
630         if (req->IntType & INT_ZOOMED_VIDEO)
631                 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
632         if (req->Attributes & CONF_ENABLE_DMA)
633                 s->socket.flags |= SS_DMA_MODE;
634         if (req->Attributes & CONF_ENABLE_SPKR)
635                 s->socket.flags |= SS_SPKR_ENA;
636         if (req->Attributes & CONF_ENABLE_IRQ)
637                 s->socket.io_irq = s->irq.AssignedIRQ;
638         else
639                 s->socket.io_irq = 0;
640         s->ops->set_socket(s, &s->socket);
641         s->lock_count++;
642
643         /* Set up CIS configuration registers */
644         base = c->ConfigBase = req->ConfigBase;
645         c->CardValues = req->Present;
646         if (req->Present & PRESENT_COPY) {
647                 c->Copy = req->Copy;
648                 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
649         }
650         if (req->Present & PRESENT_OPTION) {
651                 if (s->functions == 1) {
652                         c->Option = req->ConfigIndex & COR_CONFIG_MASK;
653                 } else {
654                         c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
655                         c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
656                         if (req->Present & PRESENT_IOBASE_0)
657                                 c->Option |= COR_ADDR_DECODE;
658                 }
659                 if (c->state & CONFIG_IRQ_REQ)
660                         if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
661                                 c->Option |= COR_LEVEL_REQ;
662                 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
663                 mdelay(40);
664         }
665         if (req->Present & PRESENT_STATUS) {
666                 c->Status = req->Status;
667                 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
668         }
669         if (req->Present & PRESENT_PIN_REPLACE) {
670                 c->Pin = req->Pin;
671                 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
672         }
673         if (req->Present & PRESENT_EXT_STATUS) {
674                 c->ExtStatus = req->ExtStatus;
675                 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
676         }
677         if (req->Present & PRESENT_IOBASE_0) {
678                 u_char b = c->io.BasePort1 & 0xff;
679                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
680                 b = (c->io.BasePort1 >> 8) & 0xff;
681                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
682         }
683         if (req->Present & PRESENT_IOSIZE) {
684                 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
685                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
686         }
687
688         /* Configure I/O windows */
689         if (c->state & CONFIG_IO_REQ) {
690                 iomap.speed = io_speed;
691                 for (i = 0; i < MAX_IO_WIN; i++)
692                         if (s->io[i].res) {
693                                 iomap.map = i;
694                                 iomap.flags = MAP_ACTIVE;
695                                 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
696                                 case IO_DATA_PATH_WIDTH_16:
697                                         iomap.flags |= MAP_16BIT; break;
698                                 case IO_DATA_PATH_WIDTH_AUTO:
699                                         iomap.flags |= MAP_AUTOSZ; break;
700                                 default:
701                                         break;
702                                 }
703                                 iomap.start = s->io[i].res->start;
704                                 iomap.stop = s->io[i].res->end;
705                                 s->ops->set_io_map(s, &iomap);
706                                 s->io[i].Config++;
707                         }
708         }
709
710         c->state |= CONFIG_LOCKED;
711         p_dev->_locked = 1;
712         return CS_SUCCESS;
713 } /* pcmcia_request_configuration */
714 EXPORT_SYMBOL(pcmcia_request_configuration);
715
716
717 /** pcmcia_request_io
718  *
719  * Request_io() reserves ranges of port addresses for a socket.
720  * I have not implemented range sharing or alias addressing.
721  */
722 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
723 {
724         struct pcmcia_socket *s = p_dev->socket;
725         config_t *c;
726
727         if (!(s->state & SOCKET_PRESENT))
728                 return CS_NO_CARD;
729
730         if (!req)
731                 return CS_UNSUPPORTED_MODE;
732         c = p_dev->function_config;
733         if (c->state & CONFIG_LOCKED)
734                 return CS_CONFIGURATION_LOCKED;
735         if (c->state & CONFIG_IO_REQ)
736                 return CS_IN_USE;
737         if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
738                 return CS_BAD_ATTRIBUTE;
739         if ((req->NumPorts2 > 0) &&
740             (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
741                 return CS_BAD_ATTRIBUTE;
742
743         if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
744                            req->NumPorts1, req->IOAddrLines))
745                 return CS_IN_USE;
746
747         if (req->NumPorts2) {
748                 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
749                                    req->NumPorts2, req->IOAddrLines)) {
750                         release_io_space(s, req->BasePort1, req->NumPorts1);
751                         return CS_IN_USE;
752                 }
753         }
754
755         c->io = *req;
756         c->state |= CONFIG_IO_REQ;
757         p_dev->_io = 1;
758         return CS_SUCCESS;
759 } /* pcmcia_request_io */
760 EXPORT_SYMBOL(pcmcia_request_io);
761
762
763 /** pcmcia_request_irq
764  *
765  * Request_irq() reserves an irq for this client.
766  *
767  * Also, since Linux only reserves irq's when they are actually
768  * hooked, we don't guarantee that an irq will still be available
769  * when the configuration is locked.  Now that I think about it,
770  * there might be a way to fix this using a dummy handler.
771  */
772
773 #ifdef CONFIG_PCMCIA_PROBE
774 static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
775 {
776         return IRQ_NONE;
777 }
778 #endif
779
780 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
781 {
782         struct pcmcia_socket *s = p_dev->socket;
783         config_t *c;
784         int ret = CS_IN_USE, irq = 0;
785
786         if (!(s->state & SOCKET_PRESENT))
787                 return CS_NO_CARD;
788         c = p_dev->function_config;
789         if (c->state & CONFIG_LOCKED)
790                 return CS_CONFIGURATION_LOCKED;
791         if (c->state & CONFIG_IRQ_REQ)
792                 return CS_IN_USE;
793
794 #ifdef CONFIG_PCMCIA_PROBE
795         if (s->irq.AssignedIRQ != 0) {
796                 /* If the interrupt is already assigned, it must be the same */
797                 irq = s->irq.AssignedIRQ;
798         } else {
799                 int try;
800                 u32 mask = s->irq_mask;
801                 void *data = &p_dev->dev.driver; /* something unique to this device */
802
803                 for (try = 0; try < 64; try++) {
804                         irq = try % 32;
805
806                         /* marked as available by driver, and not blocked by userspace? */
807                         if (!((mask >> irq) & 1))
808                                 continue;
809
810                         /* avoid an IRQ which is already used by a PCMCIA card */
811                         if ((try < 32) && pcmcia_used_irq[irq])
812                                 continue;
813
814                         /* register the correct driver, if possible, of check whether
815                          * registering a dummy handle works, i.e. if the IRQ isn't
816                          * marked as used by the kernel resource management core */
817                         ret = request_irq(irq,
818                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
819                                           ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
820                                            (s->functions > 1) ||
821                                            (irq == s->pci_irq)) ? SA_SHIRQ : 0,
822                                           p_dev->devname,
823                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
824                         if (!ret) {
825                                 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
826                                         free_irq(irq, data);
827                                 break;
828                         }
829                 }
830         }
831 #endif
832         /* only assign PCI irq if no IRQ already assigned */
833         if (ret && !s->irq.AssignedIRQ) {
834                 if (!s->pci_irq)
835                         return ret;
836                 irq = s->pci_irq;
837         }
838
839         if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
840                 if (request_irq(irq, req->Handler,
841                                 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
842                                  (s->functions > 1) ||
843                                  (irq == s->pci_irq)) ? SA_SHIRQ : 0,
844                                 p_dev->devname, req->Instance))
845                         return CS_IN_USE;
846         }
847
848         c->irq.Attributes = req->Attributes;
849         s->irq.AssignedIRQ = req->AssignedIRQ = irq;
850         s->irq.Config++;
851
852         c->state |= CONFIG_IRQ_REQ;
853         p_dev->_irq = 1;
854
855 #ifdef CONFIG_PCMCIA_PROBE
856         pcmcia_used_irq[irq]++;
857 #endif
858
859         return CS_SUCCESS;
860 } /* pcmcia_request_irq */
861 EXPORT_SYMBOL(pcmcia_request_irq);
862
863
864 /** pcmcia_request_window
865  *
866  * Request_window() establishes a mapping between card memory space
867  * and system memory space.
868  */
869 int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
870 {
871         struct pcmcia_socket *s = (*p_dev)->socket;
872         window_t *win;
873         u_long align;
874         int w;
875
876         if (!(s->state & SOCKET_PRESENT))
877                 return CS_NO_CARD;
878         if (req->Attributes & (WIN_PAGED | WIN_SHARED))
879                 return CS_BAD_ATTRIBUTE;
880
881         /* Window size defaults to smallest available */
882         if (req->Size == 0)
883                 req->Size = s->map_size;
884         align = (((s->features & SS_CAP_MEM_ALIGN) ||
885                   (req->Attributes & WIN_STRICT_ALIGN)) ?
886                  req->Size : s->map_size);
887         if (req->Size & (s->map_size-1))
888                 return CS_BAD_SIZE;
889         if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
890             (req->Base & (align-1)))
891                 return CS_BAD_BASE;
892         if (req->Base)
893                 align = 0;
894
895         /* Allocate system memory window */
896         for (w = 0; w < MAX_WIN; w++)
897                 if (!(s->state & SOCKET_WIN_REQ(w))) break;
898         if (w == MAX_WIN)
899                 return CS_OUT_OF_RESOURCE;
900
901         win = &s->win[w];
902         win->magic = WINDOW_MAGIC;
903         win->index = w;
904         win->handle = *p_dev;
905         win->sock = s;
906
907         if (!(s->features & SS_CAP_STATIC_MAP)) {
908                 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
909                                                       (req->Attributes & WIN_MAP_BELOW_1MB), s);
910                 if (!win->ctl.res)
911                         return CS_IN_USE;
912         }
913         (*p_dev)->_win |= CLIENT_WIN_REQ(w);
914
915         /* Configure the socket controller */
916         win->ctl.map = w+1;
917         win->ctl.flags = 0;
918         win->ctl.speed = req->AccessSpeed;
919         if (req->Attributes & WIN_MEMORY_TYPE)
920                 win->ctl.flags |= MAP_ATTRIB;
921         if (req->Attributes & WIN_ENABLE)
922                 win->ctl.flags |= MAP_ACTIVE;
923         if (req->Attributes & WIN_DATA_WIDTH_16)
924                 win->ctl.flags |= MAP_16BIT;
925         if (req->Attributes & WIN_USE_WAIT)
926                 win->ctl.flags |= MAP_USE_WAIT;
927         win->ctl.card_start = 0;
928         if (s->ops->set_mem_map(s, &win->ctl) != 0)
929                 return CS_BAD_ARGS;
930         s->state |= SOCKET_WIN_REQ(w);
931
932         /* Return window handle */
933         if (s->features & SS_CAP_STATIC_MAP) {
934                 req->Base = win->ctl.static_start;
935         } else {
936                 req->Base = win->ctl.res->start;
937         }
938         *wh = win;
939
940         return CS_SUCCESS;
941 } /* pcmcia_request_window */
942 EXPORT_SYMBOL(pcmcia_request_window);
943
944 void pcmcia_disable_device(struct pcmcia_device *p_dev) {
945         pcmcia_release_configuration(p_dev);
946         pcmcia_release_io(p_dev, &p_dev->io);
947         pcmcia_release_irq(p_dev, &p_dev->irq);
948         if (&p_dev->win)
949                 pcmcia_release_window(p_dev->win);
950
951         p_dev->dev_node = NULL;
952 }
953 EXPORT_SYMBOL(pcmcia_disable_device);