[PATCH] pcmcia: remove references to pcmcia/version.h
[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/config.h>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/interrupt.h>
21 #include <linux/delay.h>
22 #include <linux/pci.h>
23 #include <linux/device.h>
24
25 #define IN_CARD_SERVICES
26 #include <pcmcia/cs_types.h>
27 #include <pcmcia/ss.h>
28 #include <pcmcia/cs.h>
29 #include <pcmcia/bulkmem.h>
30 #include <pcmcia/cistpl.h>
31 #include <pcmcia/cisreg.h>
32 #include <pcmcia/ds.h>
33
34 #include "cs_internal.h"
35 #include "ds_internal.h"
36
37
38 /* Access speed for IO windows */
39 static int io_speed = 0;
40 module_param(io_speed, int, 0444);
41
42
43 #ifdef CONFIG_PCMCIA_PROBE
44 /* 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].Attributes = attr;
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].NumPorts != 0) &&
100                     ((s->io[i].BasePort & (align-1)) == *base))
101                         return 1;
102         for (i = 0; i < MAX_IO_WIN; i++) {
103                 if (s->io[i].NumPorts == 0) {
104                         s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
105                         if (s->io[i].res) {
106                                 s->io[i].Attributes = attr;
107                                 s->io[i].BasePort = *base = s->io[i].res->start;
108                                 s->io[i].NumPorts = s->io[i].InUse = num;
109                                 break;
110                         } else
111                                 return 1;
112                 } else if (s->io[i].Attributes != attr)
113                         continue;
114                 /* Try to extend top of window */
115                 try = s->io[i].BasePort + s->io[i].NumPorts;
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].NumPorts += num;
121                                 s->io[i].InUse += num;
122                                 break;
123                         }
124                 /* Try to extend bottom of window */
125                 try = s->io[i].BasePort - num;
126                 if ((*base == 0) || (*base == try))
127                         if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
128                                                     s->io[i].res->end, s) == 0) {
129                                 s->io[i].BasePort = *base = try;
130                                 s->io[i].NumPorts += num;
131                                 s->io[i].InUse += num;
132                                 break;
133                         }
134         }
135         return (i == MAX_IO_WIN);
136 } /* alloc_io_space */
137
138
139 static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
140                              ioaddr_t num)
141 {
142         int i;
143
144         for (i = 0; i < MAX_IO_WIN; i++) {
145                 if ((s->io[i].BasePort <= base) &&
146                     (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) {
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                                 s->io[i].NumPorts = 0;
151                                 release_resource(s->io[i].res);
152                                 kfree(s->io[i].res);
153                                 s->io[i].res = NULL;
154                         }
155                 }
156         }
157 } /* release_io_space */
158
159
160 /** pccard_access_configuration_register
161  *
162  * Access_configuration_register() reads and writes configuration
163  * registers in attribute memory.  Memory window 0 is reserved for
164  * this and the tuple reading services.
165  */
166
167 int pccard_access_configuration_register(struct pcmcia_socket *s,
168                                          unsigned int function,
169                                          conf_reg_t *reg)
170 {
171         config_t *c;
172         int addr;
173         u_char val;
174
175         if (!s || !s->config)
176                 return CS_NO_CARD;
177
178         c = &s->config[function];
179
180         if (c == NULL)
181                 return CS_NO_CARD;
182
183         if (!(c->state & CONFIG_LOCKED))
184                 return CS_CONFIGURATION_LOCKED;
185
186         addr = (c->ConfigBase + reg->Offset) >> 1;
187
188         switch (reg->Action) {
189         case CS_READ:
190                 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
191                 reg->Value = val;
192                 break;
193         case CS_WRITE:
194                 val = reg->Value;
195                 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
196                 break;
197         default:
198                 return CS_BAD_ARGS;
199                 break;
200         }
201         return CS_SUCCESS;
202 } /* pccard_access_configuration_register */
203
204 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
205                                          conf_reg_t *reg)
206 {
207         return pccard_access_configuration_register(p_dev->socket,
208                                                     p_dev->func, reg);
209 }
210 EXPORT_SYMBOL(pcmcia_access_configuration_register);
211
212
213
214 int pccard_get_configuration_info(struct pcmcia_socket *s,
215                                   unsigned int function,
216                                   config_info_t *config)
217 {
218         config_t *c;
219
220         if (!(s->state & SOCKET_PRESENT))
221                 return CS_NO_CARD;
222
223         config->Function = function;
224
225 #ifdef CONFIG_CARDBUS
226         if (s->state & SOCKET_CARDBUS) {
227                 memset(config, 0, sizeof(config_info_t));
228                 config->Vcc = s->socket.Vcc;
229                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
230                 config->Option = s->cb_dev->subordinate->number;
231                 if (s->state & SOCKET_CARDBUS_CONFIG) {
232                         config->Attributes = CONF_VALID_CLIENT;
233                         config->IntType = INT_CARDBUS;
234                         config->AssignedIRQ = s->irq.AssignedIRQ;
235                         if (config->AssignedIRQ)
236                                 config->Attributes |= CONF_ENABLE_IRQ;
237                         config->BasePort1 = s->io[0].BasePort;
238                         config->NumPorts1 = s->io[0].NumPorts;
239                 }
240                 return CS_SUCCESS;
241         }
242 #endif
243
244         c = (s->config != NULL) ? &s->config[function] : NULL;
245
246         if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
247                 config->Attributes = 0;
248                 config->Vcc = s->socket.Vcc;
249                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
250                 return CS_SUCCESS;
251         }
252
253         /* !!! This is a hack !!! */
254         memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
255         config->Attributes |= CONF_VALID_CLIENT;
256         config->CardValues = c->CardValues;
257         config->IRQAttributes = c->irq.Attributes;
258         config->AssignedIRQ = s->irq.AssignedIRQ;
259         config->BasePort1 = c->io.BasePort1;
260         config->NumPorts1 = c->io.NumPorts1;
261         config->Attributes1 = c->io.Attributes1;
262         config->BasePort2 = c->io.BasePort2;
263         config->NumPorts2 = c->io.NumPorts2;
264         config->Attributes2 = c->io.Attributes2;
265         config->IOAddrLines = c->io.IOAddrLines;
266
267         return CS_SUCCESS;
268 } /* pccard_get_configuration_info */
269
270 int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
271                                   config_info_t *config)
272 {
273         return pccard_get_configuration_info(p_dev->socket, p_dev->func,
274                                              config);
275 }
276 EXPORT_SYMBOL(pcmcia_get_configuration_info);
277
278
279 /** pcmcia_get_window
280  */
281 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
282                       int idx, win_req_t *req)
283 {
284         window_t *win;
285         int w;
286
287         if (!s || !(s->state & SOCKET_PRESENT))
288                 return CS_NO_CARD;
289         for (w = idx; w < MAX_WIN; w++)
290                 if (s->state & SOCKET_WIN_REQ(w))
291                         break;
292         if (w == MAX_WIN)
293                 return CS_NO_MORE_ITEMS;
294         win = &s->win[w];
295         req->Base = win->ctl.res->start;
296         req->Size = win->ctl.res->end - win->ctl.res->start + 1;
297         req->AccessSpeed = win->ctl.speed;
298         req->Attributes = 0;
299         if (win->ctl.flags & MAP_ATTRIB)
300                 req->Attributes |= WIN_MEMORY_TYPE_AM;
301         if (win->ctl.flags & MAP_ACTIVE)
302                 req->Attributes |= WIN_ENABLE;
303         if (win->ctl.flags & MAP_16BIT)
304                 req->Attributes |= WIN_DATA_WIDTH_16;
305         if (win->ctl.flags & MAP_USE_WAIT)
306                 req->Attributes |= WIN_USE_WAIT;
307         *handle = win;
308         return CS_SUCCESS;
309 } /* pcmcia_get_window */
310 EXPORT_SYMBOL(pcmcia_get_window);
311
312
313 /** pccard_get_status
314  *
315  * Get the current socket state bits.  We don't support the latched
316  * SocketState yet: I haven't seen any point for it.
317  */
318
319 int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
320                       cs_status_t *status)
321 {
322         config_t *c;
323         int val;
324
325         s->ops->get_status(s, &val);
326         status->CardState = status->SocketState = 0;
327         status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
328         status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
329         status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
330         status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
331         if (s->state & SOCKET_SUSPEND)
332                 status->CardState |= CS_EVENT_PM_SUSPEND;
333         if (!(s->state & SOCKET_PRESENT))
334                 return CS_NO_CARD;
335
336         c = (s->config != NULL) ? &s->config[function] : NULL;
337         if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
338             (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
339                 u_char reg;
340                 if (c->Present & PRESENT_PIN_REPLACE) {
341                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
342                         status->CardState |=
343                                 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
344                         status->CardState |=
345                                 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
346                         status->CardState |=
347                                 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
348                         status->CardState |=
349                                 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
350                 } else {
351                         /* No PRR?  Then assume we're always ready */
352                         status->CardState |= CS_EVENT_READY_CHANGE;
353                 }
354                 if (c->Present & PRESENT_EXT_STATUS) {
355                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
356                         status->CardState |=
357                                 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
358                 }
359                 return CS_SUCCESS;
360         }
361         status->CardState |=
362                 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
363         status->CardState |=
364                 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
365         status->CardState |=
366                 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
367         status->CardState |=
368                 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
369         return CS_SUCCESS;
370 } /* pccard_get_status */
371
372 int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
373 {
374         struct pcmcia_socket *s;
375         s = SOCKET(handle);
376         return pccard_get_status(s, handle->func, status);
377 }
378 EXPORT_SYMBOL(pcmcia_get_status);
379
380
381
382 /** pcmcia_get_mem_page
383  *
384  * Change the card address of an already open memory window.
385  */
386 int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
387 {
388         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
389                 return CS_BAD_HANDLE;
390         req->Page = 0;
391         req->CardOffset = win->ctl.card_start;
392         return CS_SUCCESS;
393 } /* pcmcia_get_mem_page */
394 EXPORT_SYMBOL(pcmcia_get_mem_page);
395
396
397 int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
398 {
399         struct pcmcia_socket *s;
400         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
401                 return CS_BAD_HANDLE;
402         if (req->Page != 0)
403                 return CS_BAD_PAGE;
404         s = win->sock;
405         win->ctl.card_start = req->CardOffset;
406         if (s->ops->set_mem_map(s, &win->ctl) != 0)
407                 return CS_BAD_OFFSET;
408         return CS_SUCCESS;
409 } /* pcmcia_map_mem_page */
410 EXPORT_SYMBOL(pcmcia_map_mem_page);
411
412
413 /** pcmcia_modify_configuration
414  *
415  * Modify a locked socket configuration
416  */
417 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
418                                 modconf_t *mod)
419 {
420         struct pcmcia_socket *s;
421         config_t *c;
422
423         s = p_dev->socket;
424         c = CONFIG(p_dev);
425         if (!(s->state & SOCKET_PRESENT))
426                 return CS_NO_CARD;
427         if (!(c->state & CONFIG_LOCKED))
428                 return CS_CONFIGURATION_LOCKED;
429
430         if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
431                 if (mod->Attributes & CONF_ENABLE_IRQ) {
432                         c->Attributes |= CONF_ENABLE_IRQ;
433                         s->socket.io_irq = s->irq.AssignedIRQ;
434                 } else {
435                         c->Attributes &= ~CONF_ENABLE_IRQ;
436                         s->socket.io_irq = 0;
437                 }
438                 s->ops->set_socket(s, &s->socket);
439         }
440
441         if (mod->Attributes & CONF_VCC_CHANGE_VALID)
442                 return CS_BAD_VCC;
443
444         /* We only allow changing Vpp1 and Vpp2 to the same value */
445         if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
446             (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
447                 if (mod->Vpp1 != mod->Vpp2)
448                         return CS_BAD_VPP;
449                 c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
450                 if (s->ops->set_socket(s, &s->socket))
451                         return CS_BAD_VPP;
452         } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
453                    (mod->Attributes & CONF_VPP2_CHANGE_VALID))
454                 return CS_BAD_VPP;
455
456         return CS_SUCCESS;
457 } /* modify_configuration */
458 EXPORT_SYMBOL(pcmcia_modify_configuration);
459
460
461 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
462 {
463         pccard_io_map io = { 0, 0, 0, 0, 1 };
464         struct pcmcia_socket *s = p_dev->socket;
465         int i;
466
467         if (!(p_dev->state & CLIENT_CONFIG_LOCKED))
468                 return CS_BAD_HANDLE;
469         p_dev->state &= ~CLIENT_CONFIG_LOCKED;
470
471         if (!(p_dev->state & CLIENT_STALE)) {
472                 config_t *c = CONFIG(p_dev);
473                 if (--(s->lock_count) == 0) {
474                         s->socket.flags = SS_OUTPUT_ENA;   /* Is this correct? */
475                         s->socket.Vpp = 0;
476                         s->socket.io_irq = 0;
477                         s->ops->set_socket(s, &s->socket);
478                 }
479                 if (c->state & CONFIG_IO_REQ)
480                         for (i = 0; i < MAX_IO_WIN; i++) {
481                                 if (s->io[i].NumPorts == 0)
482                                         continue;
483                                 s->io[i].Config--;
484                                 if (s->io[i].Config != 0)
485                                         continue;
486                                 io.map = i;
487                                 s->ops->set_io_map(s, &io);
488                         }
489                 c->state &= ~CONFIG_LOCKED;
490         }
491
492         return CS_SUCCESS;
493 } /* pcmcia_release_configuration */
494 EXPORT_SYMBOL(pcmcia_release_configuration);
495
496
497 /** pcmcia_release_io
498  *
499  * Release_io() releases the I/O ranges allocated by a client.  This
500  * may be invoked some time after a card ejection has already dumped
501  * the actual socket configuration, so if the client is "stale", we
502  * don't bother checking the port ranges against the current socket
503  * values.
504  */
505 int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
506 {
507         struct pcmcia_socket *s = p_dev->socket;
508
509         if (!(p_dev->state & CLIENT_IO_REQ))
510                 return CS_BAD_HANDLE;
511         p_dev->state &= ~CLIENT_IO_REQ;
512
513         if (!(p_dev->state & CLIENT_STALE)) {
514                 config_t *c = CONFIG(p_dev);
515                 if (c->state & CONFIG_LOCKED)
516                         return CS_CONFIGURATION_LOCKED;
517                 if ((c->io.BasePort1 != req->BasePort1) ||
518                     (c->io.NumPorts1 != req->NumPorts1) ||
519                     (c->io.BasePort2 != req->BasePort2) ||
520                     (c->io.NumPorts2 != req->NumPorts2))
521                         return CS_BAD_ARGS;
522                 c->state &= ~CONFIG_IO_REQ;
523         }
524
525         release_io_space(s, req->BasePort1, req->NumPorts1);
526         if (req->NumPorts2)
527                 release_io_space(s, req->BasePort2, req->NumPorts2);
528
529         return CS_SUCCESS;
530 } /* pcmcia_release_io */
531 EXPORT_SYMBOL(pcmcia_release_io);
532
533
534 int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
535 {
536         struct pcmcia_socket *s = p_dev->socket;
537         if (!(p_dev->state & CLIENT_IRQ_REQ))
538                 return CS_BAD_HANDLE;
539         p_dev->state &= ~CLIENT_IRQ_REQ;
540
541         if (!(p_dev->state & CLIENT_STALE)) {
542                 config_t *c = CONFIG(p_dev);
543                 if (c->state & CONFIG_LOCKED)
544                         return CS_CONFIGURATION_LOCKED;
545                 if (c->irq.Attributes != req->Attributes)
546                         return CS_BAD_ATTRIBUTE;
547                 if (s->irq.AssignedIRQ != req->AssignedIRQ)
548                         return CS_BAD_IRQ;
549                 if (--s->irq.Config == 0) {
550                         c->state &= ~CONFIG_IRQ_REQ;
551                         s->irq.AssignedIRQ = 0;
552                 }
553         }
554
555         if (req->Attributes & IRQ_HANDLE_PRESENT) {
556                 free_irq(req->AssignedIRQ, req->Instance);
557         }
558
559 #ifdef CONFIG_PCMCIA_PROBE
560         pcmcia_used_irq[req->AssignedIRQ]--;
561 #endif
562
563         return CS_SUCCESS;
564 } /* pcmcia_release_irq */
565 EXPORT_SYMBOL(pcmcia_release_irq);
566
567
568 int pcmcia_release_window(window_handle_t win)
569 {
570         struct pcmcia_socket *s;
571
572         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
573                 return CS_BAD_HANDLE;
574         s = win->sock;
575         if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
576                 return CS_BAD_HANDLE;
577
578         /* Shut down memory window */
579         win->ctl.flags &= ~MAP_ACTIVE;
580         s->ops->set_mem_map(s, &win->ctl);
581         s->state &= ~SOCKET_WIN_REQ(win->index);
582
583         /* Release system memory */
584         if (win->ctl.res) {
585                 release_resource(win->ctl.res);
586                 kfree(win->ctl.res);
587                 win->ctl.res = NULL;
588         }
589         win->handle->state &= ~CLIENT_WIN_REQ(win->index);
590
591         win->magic = 0;
592
593         return CS_SUCCESS;
594 } /* pcmcia_release_window */
595 EXPORT_SYMBOL(pcmcia_release_window);
596
597
598 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
599                                  config_req_t *req)
600 {
601         int i;
602         u_int base;
603         struct pcmcia_socket *s = p_dev->socket;
604         config_t *c;
605         pccard_io_map iomap;
606
607         if (!(s->state & SOCKET_PRESENT))
608                 return CS_NO_CARD;
609
610         if (req->IntType & INT_CARDBUS)
611                 return CS_UNSUPPORTED_MODE;
612         c = CONFIG(p_dev);
613         if (c->state & CONFIG_LOCKED)
614                 return CS_CONFIGURATION_LOCKED;
615
616         /* Do power control.  We don't allow changes in Vcc. */
617         if (s->socket.Vcc != req->Vcc)
618                 return CS_BAD_VCC;
619         if (req->Vpp1 != req->Vpp2)
620                 return CS_BAD_VPP;
621         s->socket.Vpp = req->Vpp1;
622         if (s->ops->set_socket(s, &s->socket))
623                 return CS_BAD_VPP;
624
625         c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1;
626
627         /* Pick memory or I/O card, DMA mode, interrupt */
628         c->IntType = req->IntType;
629         c->Attributes = req->Attributes;
630         if (req->IntType & INT_MEMORY_AND_IO)
631                 s->socket.flags |= SS_IOCARD;
632         if (req->IntType & INT_ZOOMED_VIDEO)
633                 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
634         if (req->Attributes & CONF_ENABLE_DMA)
635                 s->socket.flags |= SS_DMA_MODE;
636         if (req->Attributes & CONF_ENABLE_SPKR)
637                 s->socket.flags |= SS_SPKR_ENA;
638         if (req->Attributes & CONF_ENABLE_IRQ)
639                 s->socket.io_irq = s->irq.AssignedIRQ;
640         else
641                 s->socket.io_irq = 0;
642         s->ops->set_socket(s, &s->socket);
643         s->lock_count++;
644
645         /* Set up CIS configuration registers */
646         base = c->ConfigBase = req->ConfigBase;
647         c->Present = c->CardValues = req->Present;
648         if (req->Present & PRESENT_COPY) {
649                 c->Copy = req->Copy;
650                 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
651         }
652         if (req->Present & PRESENT_OPTION) {
653                 if (s->functions == 1) {
654                         c->Option = req->ConfigIndex & COR_CONFIG_MASK;
655                 } else {
656                         c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
657                         c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
658                         if (req->Present & PRESENT_IOBASE_0)
659                                 c->Option |= COR_ADDR_DECODE;
660                 }
661                 if (c->state & CONFIG_IRQ_REQ)
662                         if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
663                                 c->Option |= COR_LEVEL_REQ;
664                 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
665                 mdelay(40);
666         }
667         if (req->Present & PRESENT_STATUS) {
668                 c->Status = req->Status;
669                 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
670         }
671         if (req->Present & PRESENT_PIN_REPLACE) {
672                 c->Pin = req->Pin;
673                 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
674         }
675         if (req->Present & PRESENT_EXT_STATUS) {
676                 c->ExtStatus = req->ExtStatus;
677                 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
678         }
679         if (req->Present & PRESENT_IOBASE_0) {
680                 u_char b = c->io.BasePort1 & 0xff;
681                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
682                 b = (c->io.BasePort1 >> 8) & 0xff;
683                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
684         }
685         if (req->Present & PRESENT_IOSIZE) {
686                 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
687                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
688         }
689
690         /* Configure I/O windows */
691         if (c->state & CONFIG_IO_REQ) {
692                 iomap.speed = io_speed;
693                 for (i = 0; i < MAX_IO_WIN; i++)
694                         if (s->io[i].NumPorts != 0) {
695                                 iomap.map = i;
696                                 iomap.flags = MAP_ACTIVE;
697                                 switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
698                                 case IO_DATA_PATH_WIDTH_16:
699                                         iomap.flags |= MAP_16BIT; break;
700                                 case IO_DATA_PATH_WIDTH_AUTO:
701                                         iomap.flags |= MAP_AUTOSZ; break;
702                                 default:
703                                         break;
704                                 }
705                                 iomap.start = s->io[i].BasePort;
706                                 iomap.stop = iomap.start + s->io[i].NumPorts - 1;
707                                 s->ops->set_io_map(s, &iomap);
708                                 s->io[i].Config++;
709                         }
710         }
711
712         c->state |= CONFIG_LOCKED;
713         p_dev->state |= CLIENT_CONFIG_LOCKED;
714         return CS_SUCCESS;
715 } /* pcmcia_request_configuration */
716 EXPORT_SYMBOL(pcmcia_request_configuration);
717
718
719 /** pcmcia_request_io
720  *
721  * Request_io() reserves ranges of port addresses for a socket.
722  * I have not implemented range sharing or alias addressing.
723  */
724 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
725 {
726         struct pcmcia_socket *s = p_dev->socket;
727         config_t *c;
728
729         if (!(s->state & SOCKET_PRESENT))
730                 return CS_NO_CARD;
731
732         if (!req)
733                 return CS_UNSUPPORTED_MODE;
734         c = CONFIG(p_dev);
735         if (c->state & CONFIG_LOCKED)
736                 return CS_CONFIGURATION_LOCKED;
737         if (c->state & CONFIG_IO_REQ)
738                 return CS_IN_USE;
739         if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
740                 return CS_BAD_ATTRIBUTE;
741         if ((req->NumPorts2 > 0) &&
742             (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
743                 return CS_BAD_ATTRIBUTE;
744
745         if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
746                            req->NumPorts1, req->IOAddrLines))
747                 return CS_IN_USE;
748
749         if (req->NumPorts2) {
750                 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
751                                    req->NumPorts2, req->IOAddrLines)) {
752                         release_io_space(s, req->BasePort1, req->NumPorts1);
753                         return CS_IN_USE;
754                 }
755         }
756
757         c->io = *req;
758         c->state |= CONFIG_IO_REQ;
759         p_dev->state |= CLIENT_IO_REQ;
760         return CS_SUCCESS;
761 } /* pcmcia_request_io */
762 EXPORT_SYMBOL(pcmcia_request_io);
763
764
765 /** pcmcia_request_irq
766  *
767  * Request_irq() reserves an irq for this client.
768  *
769  * Also, since Linux only reserves irq's when they are actually
770  * hooked, we don't guarantee that an irq will still be available
771  * when the configuration is locked.  Now that I think about it,
772  * there might be a way to fix this using a dummy handler.
773  */
774
775 #ifdef CONFIG_PCMCIA_PROBE
776 static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
777 {
778         return IRQ_NONE;
779 }
780 #endif
781
782 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
783 {
784         struct pcmcia_socket *s = p_dev->socket;
785         config_t *c;
786         int ret = CS_IN_USE, irq = 0;
787
788         if (!(s->state & SOCKET_PRESENT))
789                 return CS_NO_CARD;
790         c = CONFIG(p_dev);
791         if (c->state & CONFIG_LOCKED)
792                 return CS_CONFIGURATION_LOCKED;
793         if (c->state & CONFIG_IRQ_REQ)
794                 return CS_IN_USE;
795
796 #ifdef CONFIG_PCMCIA_PROBE
797         if (s->irq.AssignedIRQ != 0) {
798                 /* If the interrupt is already assigned, it must be the same */
799                 irq = s->irq.AssignedIRQ;
800         } else {
801                 int try;
802                 u32 mask = s->irq_mask;
803                 void *data = NULL;
804
805                 for (try = 0; try < 64; try++) {
806                         irq = try % 32;
807
808                         /* marked as available by driver, and not blocked by userspace? */
809                         if (!((mask >> irq) & 1))
810                                 continue;
811
812                         /* avoid an IRQ which is already used by a PCMCIA card */
813                         if ((try < 32) && pcmcia_used_irq[irq])
814                                 continue;
815
816                         /* register the correct driver, if possible, of check whether
817                          * registering a dummy handle works, i.e. if the IRQ isn't
818                          * marked as used by the kernel resource management core */
819                         ret = request_irq(irq,
820                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
821                                           ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
822                                            (s->functions > 1) ||
823                                            (irq == s->pci_irq)) ? SA_SHIRQ : 0,
824                                           p_dev->dev.bus_id,
825                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
826                         if (!ret) {
827                                 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
828                                         free_irq(irq, data);
829                                 break;
830                         }
831                 }
832         }
833 #endif
834         if (ret) {
835                 if (!s->pci_irq)
836                         return ret;
837                 irq = s->pci_irq;
838         }
839
840         if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
841                 if (request_irq(irq, req->Handler,
842                                 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
843                                  (s->functions > 1) ||
844                                  (irq == s->pci_irq)) ? SA_SHIRQ : 0,
845                                 p_dev->dev.bus_id, req->Instance))
846                         return CS_IN_USE;
847         }
848
849         c->irq.Attributes = req->Attributes;
850         s->irq.AssignedIRQ = req->AssignedIRQ = irq;
851         s->irq.Config++;
852
853         c->state |= CONFIG_IRQ_REQ;
854         p_dev->state |= CLIENT_IRQ_REQ;
855
856 #ifdef CONFIG_PCMCIA_PROBE
857         pcmcia_used_irq[irq]++;
858 #endif
859
860         return CS_SUCCESS;
861 } /* pcmcia_request_irq */
862 EXPORT_SYMBOL(pcmcia_request_irq);
863
864
865 /** pcmcia_request_window
866  *
867  * Request_window() establishes a mapping between card memory space
868  * and system memory space.
869  */
870 int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
871 {
872         struct pcmcia_socket *s = (*p_dev)->socket;
873         window_t *win;
874         u_long align;
875         int w;
876
877         if (!(s->state & SOCKET_PRESENT))
878                 return CS_NO_CARD;
879         if (req->Attributes & (WIN_PAGED | WIN_SHARED))
880                 return CS_BAD_ATTRIBUTE;
881
882         /* Window size defaults to smallest available */
883         if (req->Size == 0)
884                 req->Size = s->map_size;
885         align = (((s->features & SS_CAP_MEM_ALIGN) ||
886                   (req->Attributes & WIN_STRICT_ALIGN)) ?
887                  req->Size : s->map_size);
888         if (req->Size & (s->map_size-1))
889                 return CS_BAD_SIZE;
890         if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
891             (req->Base & (align-1)))
892                 return CS_BAD_BASE;
893         if (req->Base)
894                 align = 0;
895
896         /* Allocate system memory window */
897         for (w = 0; w < MAX_WIN; w++)
898                 if (!(s->state & SOCKET_WIN_REQ(w))) break;
899         if (w == MAX_WIN)
900                 return CS_OUT_OF_RESOURCE;
901
902         win = &s->win[w];
903         win->magic = WINDOW_MAGIC;
904         win->index = w;
905         win->handle = *p_dev;
906         win->sock = s;
907
908         if (!(s->features & SS_CAP_STATIC_MAP)) {
909                 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
910                                                       (req->Attributes & WIN_MAP_BELOW_1MB), s);
911                 if (!win->ctl.res)
912                         return CS_IN_USE;
913         }
914         (*p_dev)->state |= CLIENT_WIN_REQ(w);
915
916         /* Configure the socket controller */
917         win->ctl.map = w+1;
918         win->ctl.flags = 0;
919         win->ctl.speed = req->AccessSpeed;
920         if (req->Attributes & WIN_MEMORY_TYPE)
921                 win->ctl.flags |= MAP_ATTRIB;
922         if (req->Attributes & WIN_ENABLE)
923                 win->ctl.flags |= MAP_ACTIVE;
924         if (req->Attributes & WIN_DATA_WIDTH_16)
925                 win->ctl.flags |= MAP_16BIT;
926         if (req->Attributes & WIN_USE_WAIT)
927                 win->ctl.flags |= MAP_USE_WAIT;
928         win->ctl.card_start = 0;
929         if (s->ops->set_mem_map(s, &win->ctl) != 0)
930                 return CS_BAD_ARGS;
931         s->state |= SOCKET_WIN_REQ(w);
932
933         /* Return window handle */
934         if (s->features & SS_CAP_STATIC_MAP) {
935                 req->Base = win->ctl.static_start;
936         } else {
937                 req->Base = win->ctl.res->start;
938         }
939         *wh = win;
940
941         return CS_SUCCESS;
942 } /* pcmcia_request_window */
943 EXPORT_SYMBOL(pcmcia_request_window);