[PATCH] pcmcia: reduce client_handle_t usage
[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/version.h>
27 #include <pcmcia/cs_types.h>
28 #include <pcmcia/ss.h>
29 #include <pcmcia/cs.h>
30 #include <pcmcia/bulkmem.h>
31 #include <pcmcia/cistpl.h>
32 #include <pcmcia/cisreg.h>
33 #include <pcmcia/ds.h>
34
35 #include "cs_internal.h"
36 #include "ds_internal.h"
37
38
39 /* Access speed for IO windows */
40 static int io_speed = 0;
41 module_param(io_speed, int, 0444);
42
43
44 #ifdef CONFIG_PCMCIA_PROBE
45 /* mask of IRQs already reserved by other cards, we should avoid using them */
46 static u8 pcmcia_used_irq[NR_IRQS];
47 #endif
48
49
50 #ifdef DEBUG
51 extern int ds_pc_debug;
52 #define cs_socket_name(skt)    ((skt)->dev.class_id)
53
54 #define ds_dbg(skt, lvl, fmt, arg...) do {                      \
55         if (ds_pc_debug >= lvl)                                 \
56                 printk(KERN_DEBUG "pcmcia_resource: %s: " fmt,  \
57                         cs_socket_name(skt) , ## arg);          \
58 } while (0)
59 #else
60 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
61 #endif
62
63
64
65 /** alloc_io_space
66  *
67  * Special stuff for managing IO windows, because they are scarce
68  */
69
70 static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base,
71                           ioaddr_t num, u_int lines)
72 {
73         int i;
74         kio_addr_t try, align;
75
76         align = (*base) ? (lines ? 1<<lines : 0) : 1;
77         if (align && (align < num)) {
78                 if (*base) {
79                         ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n",
80                                num, align);
81                         align = 0;
82                 } else
83                         while (align && (align < num)) align <<= 1;
84         }
85         if (*base & ~(align-1)) {
86                 ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n",
87                        *base, align);
88                 align = 0;
89         }
90         if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
91                 *base = s->io_offset | (*base & 0x0fff);
92                 s->io[0].Attributes = attr;
93                 return 0;
94         }
95         /* Check for an already-allocated window that must conflict with
96          * what was asked for.  It is a hack because it does not catch all
97          * potential conflicts, just the most obvious ones.
98          */
99         for (i = 0; i < MAX_IO_WIN; i++)
100                 if ((s->io[i].NumPorts != 0) &&
101                     ((s->io[i].BasePort & (align-1)) == *base))
102                         return 1;
103         for (i = 0; i < MAX_IO_WIN; i++) {
104                 if (s->io[i].NumPorts == 0) {
105                         s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
106                         if (s->io[i].res) {
107                                 s->io[i].Attributes = attr;
108                                 s->io[i].BasePort = *base = s->io[i].res->start;
109                                 s->io[i].NumPorts = s->io[i].InUse = num;
110                                 break;
111                         } else
112                                 return 1;
113                 } else if (s->io[i].Attributes != attr)
114                         continue;
115                 /* Try to extend top of window */
116                 try = s->io[i].BasePort + s->io[i].NumPorts;
117                 if ((*base == 0) || (*base == try))
118                         if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
119                                                     s->io[i].res->end + num, s) == 0) {
120                                 *base = try;
121                                 s->io[i].NumPorts += num;
122                                 s->io[i].InUse += num;
123                                 break;
124                         }
125                 /* Try to extend bottom of window */
126                 try = s->io[i].BasePort - num;
127                 if ((*base == 0) || (*base == try))
128                         if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
129                                                     s->io[i].res->end, s) == 0) {
130                                 s->io[i].BasePort = *base = try;
131                                 s->io[i].NumPorts += num;
132                                 s->io[i].InUse += num;
133                                 break;
134                         }
135         }
136         return (i == MAX_IO_WIN);
137 } /* alloc_io_space */
138
139
140 static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
141                              ioaddr_t num)
142 {
143         int i;
144
145         for (i = 0; i < MAX_IO_WIN; i++) {
146                 if ((s->io[i].BasePort <= base) &&
147                     (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) {
148                         s->io[i].InUse -= num;
149                         /* Free the window if no one else is using it */
150                         if (s->io[i].InUse == 0) {
151                                 s->io[i].NumPorts = 0;
152                                 release_resource(s->io[i].res);
153                                 kfree(s->io[i].res);
154                                 s->io[i].res = NULL;
155                         }
156                 }
157         }
158 } /* release_io_space */
159
160
161 /** pccard_access_configuration_register
162  *
163  * Access_configuration_register() reads and writes configuration
164  * registers in attribute memory.  Memory window 0 is reserved for
165  * this and the tuple reading services.
166  */
167
168 int pccard_access_configuration_register(struct pcmcia_socket *s,
169                                          unsigned int function,
170                                          conf_reg_t *reg)
171 {
172         config_t *c;
173         int addr;
174         u_char val;
175
176         if (!s || !s->config)
177                 return CS_NO_CARD;
178
179         c = &s->config[function];
180
181         if (c == NULL)
182                 return CS_NO_CARD;
183
184         if (!(c->state & CONFIG_LOCKED))
185                 return CS_CONFIGURATION_LOCKED;
186
187         addr = (c->ConfigBase + reg->Offset) >> 1;
188
189         switch (reg->Action) {
190         case CS_READ:
191                 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
192                 reg->Value = val;
193                 break;
194         case CS_WRITE:
195                 val = reg->Value;
196                 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
197                 break;
198         default:
199                 return CS_BAD_ARGS;
200                 break;
201         }
202         return CS_SUCCESS;
203 } /* pccard_access_configuration_register */
204
205 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
206                                          conf_reg_t *reg)
207 {
208         return pccard_access_configuration_register(p_dev->socket,
209                                                     p_dev->func, reg);
210 }
211 EXPORT_SYMBOL(pcmcia_access_configuration_register);
212
213
214
215 int pccard_get_configuration_info(struct pcmcia_socket *s,
216                                   unsigned int function,
217                                   config_info_t *config)
218 {
219         config_t *c;
220
221         if (!(s->state & SOCKET_PRESENT))
222                 return CS_NO_CARD;
223
224         config->Function = function;
225
226 #ifdef CONFIG_CARDBUS
227         if (s->state & SOCKET_CARDBUS) {
228                 memset(config, 0, sizeof(config_info_t));
229                 config->Vcc = s->socket.Vcc;
230                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
231                 config->Option = s->cb_dev->subordinate->number;
232                 if (s->state & SOCKET_CARDBUS_CONFIG) {
233                         config->Attributes = CONF_VALID_CLIENT;
234                         config->IntType = INT_CARDBUS;
235                         config->AssignedIRQ = s->irq.AssignedIRQ;
236                         if (config->AssignedIRQ)
237                                 config->Attributes |= CONF_ENABLE_IRQ;
238                         config->BasePort1 = s->io[0].BasePort;
239                         config->NumPorts1 = s->io[0].NumPorts;
240                 }
241                 return CS_SUCCESS;
242         }
243 #endif
244
245         c = (s->config != NULL) ? &s->config[function] : NULL;
246
247         if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
248                 config->Attributes = 0;
249                 config->Vcc = s->socket.Vcc;
250                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
251                 return CS_SUCCESS;
252         }
253
254         /* !!! This is a hack !!! */
255         memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
256         config->Attributes |= CONF_VALID_CLIENT;
257         config->CardValues = c->CardValues;
258         config->IRQAttributes = c->irq.Attributes;
259         config->AssignedIRQ = s->irq.AssignedIRQ;
260         config->BasePort1 = c->io.BasePort1;
261         config->NumPorts1 = c->io.NumPorts1;
262         config->Attributes1 = c->io.Attributes1;
263         config->BasePort2 = c->io.BasePort2;
264         config->NumPorts2 = c->io.NumPorts2;
265         config->Attributes2 = c->io.Attributes2;
266         config->IOAddrLines = c->io.IOAddrLines;
267
268         return CS_SUCCESS;
269 } /* pccard_get_configuration_info */
270
271 int pcmcia_get_configuration_info(struct pcmcia_device *p_dev,
272                                   config_info_t *config)
273 {
274         return pccard_get_configuration_info(p_dev->socket, p_dev->func,
275                                              config);
276 }
277 EXPORT_SYMBOL(pcmcia_get_configuration_info);
278
279
280 /** pcmcia_get_window
281  */
282 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
283                       int idx, win_req_t *req)
284 {
285         window_t *win;
286         int w;
287
288         if (!s || !(s->state & SOCKET_PRESENT))
289                 return CS_NO_CARD;
290         for (w = idx; w < MAX_WIN; w++)
291                 if (s->state & SOCKET_WIN_REQ(w))
292                         break;
293         if (w == MAX_WIN)
294                 return CS_NO_MORE_ITEMS;
295         win = &s->win[w];
296         req->Base = win->ctl.res->start;
297         req->Size = win->ctl.res->end - win->ctl.res->start + 1;
298         req->AccessSpeed = win->ctl.speed;
299         req->Attributes = 0;
300         if (win->ctl.flags & MAP_ATTRIB)
301                 req->Attributes |= WIN_MEMORY_TYPE_AM;
302         if (win->ctl.flags & MAP_ACTIVE)
303                 req->Attributes |= WIN_ENABLE;
304         if (win->ctl.flags & MAP_16BIT)
305                 req->Attributes |= WIN_DATA_WIDTH_16;
306         if (win->ctl.flags & MAP_USE_WAIT)
307                 req->Attributes |= WIN_USE_WAIT;
308         *handle = win;
309         return CS_SUCCESS;
310 } /* pcmcia_get_window */
311 EXPORT_SYMBOL(pcmcia_get_window);
312
313
314 /** pccard_get_status
315  *
316  * Get the current socket state bits.  We don't support the latched
317  * SocketState yet: I haven't seen any point for it.
318  */
319
320 int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
321                       cs_status_t *status)
322 {
323         config_t *c;
324         int val;
325
326         s->ops->get_status(s, &val);
327         status->CardState = status->SocketState = 0;
328         status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
329         status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
330         status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
331         status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
332         if (s->state & SOCKET_SUSPEND)
333                 status->CardState |= CS_EVENT_PM_SUSPEND;
334         if (!(s->state & SOCKET_PRESENT))
335                 return CS_NO_CARD;
336
337         c = (s->config != NULL) ? &s->config[function] : NULL;
338         if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
339             (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
340                 u_char reg;
341                 if (c->Present & PRESENT_PIN_REPLACE) {
342                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
343                         status->CardState |=
344                                 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
345                         status->CardState |=
346                                 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
347                         status->CardState |=
348                                 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
349                         status->CardState |=
350                                 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
351                 } else {
352                         /* No PRR?  Then assume we're always ready */
353                         status->CardState |= CS_EVENT_READY_CHANGE;
354                 }
355                 if (c->Present & PRESENT_EXT_STATUS) {
356                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
357                         status->CardState |=
358                                 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
359                 }
360                 return CS_SUCCESS;
361         }
362         status->CardState |=
363                 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
364         status->CardState |=
365                 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
366         status->CardState |=
367                 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
368         status->CardState |=
369                 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
370         return CS_SUCCESS;
371 } /* pccard_get_status */
372
373 int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
374 {
375         struct pcmcia_socket *s;
376         s = SOCKET(handle);
377         return pccard_get_status(s, handle->func, status);
378 }
379 EXPORT_SYMBOL(pcmcia_get_status);
380
381
382
383 /** pcmcia_get_mem_page
384  *
385  * Change the card address of an already open memory window.
386  */
387 int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
388 {
389         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
390                 return CS_BAD_HANDLE;
391         req->Page = 0;
392         req->CardOffset = win->ctl.card_start;
393         return CS_SUCCESS;
394 } /* pcmcia_get_mem_page */
395 EXPORT_SYMBOL(pcmcia_get_mem_page);
396
397
398 int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
399 {
400         struct pcmcia_socket *s;
401         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
402                 return CS_BAD_HANDLE;
403         if (req->Page != 0)
404                 return CS_BAD_PAGE;
405         s = win->sock;
406         win->ctl.card_start = req->CardOffset;
407         if (s->ops->set_mem_map(s, &win->ctl) != 0)
408                 return CS_BAD_OFFSET;
409         return CS_SUCCESS;
410 } /* pcmcia_map_mem_page */
411 EXPORT_SYMBOL(pcmcia_map_mem_page);
412
413
414 /** pcmcia_modify_configuration
415  *
416  * Modify a locked socket configuration
417  */
418 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
419                                 modconf_t *mod)
420 {
421         struct pcmcia_socket *s;
422         config_t *c;
423
424         s = p_dev->socket;
425         c = CONFIG(p_dev);
426         if (!(s->state & SOCKET_PRESENT))
427                 return CS_NO_CARD;
428         if (!(c->state & CONFIG_LOCKED))
429                 return CS_CONFIGURATION_LOCKED;
430
431         if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
432                 if (mod->Attributes & CONF_ENABLE_IRQ) {
433                         c->Attributes |= CONF_ENABLE_IRQ;
434                         s->socket.io_irq = s->irq.AssignedIRQ;
435                 } else {
436                         c->Attributes &= ~CONF_ENABLE_IRQ;
437                         s->socket.io_irq = 0;
438                 }
439                 s->ops->set_socket(s, &s->socket);
440         }
441
442         if (mod->Attributes & CONF_VCC_CHANGE_VALID)
443                 return CS_BAD_VCC;
444
445         /* We only allow changing Vpp1 and Vpp2 to the same value */
446         if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
447             (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
448                 if (mod->Vpp1 != mod->Vpp2)
449                         return CS_BAD_VPP;
450                 c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
451                 if (s->ops->set_socket(s, &s->socket))
452                         return CS_BAD_VPP;
453         } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
454                    (mod->Attributes & CONF_VPP2_CHANGE_VALID))
455                 return CS_BAD_VPP;
456
457         return CS_SUCCESS;
458 } /* modify_configuration */
459 EXPORT_SYMBOL(pcmcia_modify_configuration);
460
461
462 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
463 {
464         pccard_io_map io = { 0, 0, 0, 0, 1 };
465         struct pcmcia_socket *s = p_dev->socket;
466         int i;
467
468         if (!(p_dev->state & CLIENT_CONFIG_LOCKED))
469                 return CS_BAD_HANDLE;
470         p_dev->state &= ~CLIENT_CONFIG_LOCKED;
471
472         if (!(p_dev->state & CLIENT_STALE)) {
473                 config_t *c = CONFIG(p_dev);
474                 if (--(s->lock_count) == 0) {
475                         s->socket.flags = SS_OUTPUT_ENA;   /* Is this correct? */
476                         s->socket.Vpp = 0;
477                         s->socket.io_irq = 0;
478                         s->ops->set_socket(s, &s->socket);
479                 }
480                 if (c->state & CONFIG_IO_REQ)
481                         for (i = 0; i < MAX_IO_WIN; i++) {
482                                 if (s->io[i].NumPorts == 0)
483                                         continue;
484                                 s->io[i].Config--;
485                                 if (s->io[i].Config != 0)
486                                         continue;
487                                 io.map = i;
488                                 s->ops->set_io_map(s, &io);
489                         }
490                 c->state &= ~CONFIG_LOCKED;
491         }
492
493         return CS_SUCCESS;
494 } /* pcmcia_release_configuration */
495 EXPORT_SYMBOL(pcmcia_release_configuration);
496
497
498 /** pcmcia_release_io
499  *
500  * Release_io() releases the I/O ranges allocated by a client.  This
501  * may be invoked some time after a card ejection has already dumped
502  * the actual socket configuration, so if the client is "stale", we
503  * don't bother checking the port ranges against the current socket
504  * values.
505  */
506 int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
507 {
508         struct pcmcia_socket *s = p_dev->socket;
509
510         if (!(p_dev->state & CLIENT_IO_REQ))
511                 return CS_BAD_HANDLE;
512         p_dev->state &= ~CLIENT_IO_REQ;
513
514         if (!(p_dev->state & CLIENT_STALE)) {
515                 config_t *c = CONFIG(p_dev);
516                 if (c->state & CONFIG_LOCKED)
517                         return CS_CONFIGURATION_LOCKED;
518                 if ((c->io.BasePort1 != req->BasePort1) ||
519                     (c->io.NumPorts1 != req->NumPorts1) ||
520                     (c->io.BasePort2 != req->BasePort2) ||
521                     (c->io.NumPorts2 != req->NumPorts2))
522                         return CS_BAD_ARGS;
523                 c->state &= ~CONFIG_IO_REQ;
524         }
525
526         release_io_space(s, req->BasePort1, req->NumPorts1);
527         if (req->NumPorts2)
528                 release_io_space(s, req->BasePort2, req->NumPorts2);
529
530         return CS_SUCCESS;
531 } /* pcmcia_release_io */
532 EXPORT_SYMBOL(pcmcia_release_io);
533
534
535 int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
536 {
537         struct pcmcia_socket *s = p_dev->socket;
538         if (!(p_dev->state & CLIENT_IRQ_REQ))
539                 return CS_BAD_HANDLE;
540         p_dev->state &= ~CLIENT_IRQ_REQ;
541
542         if (!(p_dev->state & CLIENT_STALE)) {
543                 config_t *c = CONFIG(p_dev);
544                 if (c->state & CONFIG_LOCKED)
545                         return CS_CONFIGURATION_LOCKED;
546                 if (c->irq.Attributes != req->Attributes)
547                         return CS_BAD_ATTRIBUTE;
548                 if (s->irq.AssignedIRQ != req->AssignedIRQ)
549                         return CS_BAD_IRQ;
550                 if (--s->irq.Config == 0) {
551                         c->state &= ~CONFIG_IRQ_REQ;
552                         s->irq.AssignedIRQ = 0;
553                 }
554         }
555
556         if (req->Attributes & IRQ_HANDLE_PRESENT) {
557                 free_irq(req->AssignedIRQ, req->Instance);
558         }
559
560 #ifdef CONFIG_PCMCIA_PROBE
561         pcmcia_used_irq[req->AssignedIRQ]--;
562 #endif
563
564         return CS_SUCCESS;
565 } /* pcmcia_release_irq */
566 EXPORT_SYMBOL(pcmcia_release_irq);
567
568
569 int pcmcia_release_window(window_handle_t win)
570 {
571         struct pcmcia_socket *s;
572
573         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
574                 return CS_BAD_HANDLE;
575         s = win->sock;
576         if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
577                 return CS_BAD_HANDLE;
578
579         /* Shut down memory window */
580         win->ctl.flags &= ~MAP_ACTIVE;
581         s->ops->set_mem_map(s, &win->ctl);
582         s->state &= ~SOCKET_WIN_REQ(win->index);
583
584         /* Release system memory */
585         if (win->ctl.res) {
586                 release_resource(win->ctl.res);
587                 kfree(win->ctl.res);
588                 win->ctl.res = NULL;
589         }
590         win->handle->state &= ~CLIENT_WIN_REQ(win->index);
591
592         win->magic = 0;
593
594         return CS_SUCCESS;
595 } /* pcmcia_release_window */
596 EXPORT_SYMBOL(pcmcia_release_window);
597
598
599 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
600                                  config_req_t *req)
601 {
602         int i;
603         u_int base;
604         struct pcmcia_socket *s = p_dev->socket;
605         config_t *c;
606         pccard_io_map iomap;
607
608         if (!(s->state & SOCKET_PRESENT))
609                 return CS_NO_CARD;
610
611         if (req->IntType & INT_CARDBUS)
612                 return CS_UNSUPPORTED_MODE;
613         c = CONFIG(p_dev);
614         if (c->state & CONFIG_LOCKED)
615                 return CS_CONFIGURATION_LOCKED;
616
617         /* Do power control.  We don't allow changes in Vcc. */
618         if (s->socket.Vcc != req->Vcc)
619                 return CS_BAD_VCC;
620         if (req->Vpp1 != req->Vpp2)
621                 return CS_BAD_VPP;
622         s->socket.Vpp = req->Vpp1;
623         if (s->ops->set_socket(s, &s->socket))
624                 return CS_BAD_VPP;
625
626         c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1;
627
628         /* Pick memory or I/O card, DMA mode, interrupt */
629         c->IntType = req->IntType;
630         c->Attributes = req->Attributes;
631         if (req->IntType & INT_MEMORY_AND_IO)
632                 s->socket.flags |= SS_IOCARD;
633         if (req->IntType & INT_ZOOMED_VIDEO)
634                 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
635         if (req->Attributes & CONF_ENABLE_DMA)
636                 s->socket.flags |= SS_DMA_MODE;
637         if (req->Attributes & CONF_ENABLE_SPKR)
638                 s->socket.flags |= SS_SPKR_ENA;
639         if (req->Attributes & CONF_ENABLE_IRQ)
640                 s->socket.io_irq = s->irq.AssignedIRQ;
641         else
642                 s->socket.io_irq = 0;
643         s->ops->set_socket(s, &s->socket);
644         s->lock_count++;
645
646         /* Set up CIS configuration registers */
647         base = c->ConfigBase = req->ConfigBase;
648         c->Present = c->CardValues = req->Present;
649         if (req->Present & PRESENT_COPY) {
650                 c->Copy = req->Copy;
651                 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
652         }
653         if (req->Present & PRESENT_OPTION) {
654                 if (s->functions == 1) {
655                         c->Option = req->ConfigIndex & COR_CONFIG_MASK;
656                 } else {
657                         c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
658                         c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
659                         if (req->Present & PRESENT_IOBASE_0)
660                                 c->Option |= COR_ADDR_DECODE;
661                 }
662                 if (c->state & CONFIG_IRQ_REQ)
663                         if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
664                                 c->Option |= COR_LEVEL_REQ;
665                 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
666                 mdelay(40);
667         }
668         if (req->Present & PRESENT_STATUS) {
669                 c->Status = req->Status;
670                 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
671         }
672         if (req->Present & PRESENT_PIN_REPLACE) {
673                 c->Pin = req->Pin;
674                 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
675         }
676         if (req->Present & PRESENT_EXT_STATUS) {
677                 c->ExtStatus = req->ExtStatus;
678                 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
679         }
680         if (req->Present & PRESENT_IOBASE_0) {
681                 u_char b = c->io.BasePort1 & 0xff;
682                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
683                 b = (c->io.BasePort1 >> 8) & 0xff;
684                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
685         }
686         if (req->Present & PRESENT_IOSIZE) {
687                 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
688                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
689         }
690
691         /* Configure I/O windows */
692         if (c->state & CONFIG_IO_REQ) {
693                 iomap.speed = io_speed;
694                 for (i = 0; i < MAX_IO_WIN; i++)
695                         if (s->io[i].NumPorts != 0) {
696                                 iomap.map = i;
697                                 iomap.flags = MAP_ACTIVE;
698                                 switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
699                                 case IO_DATA_PATH_WIDTH_16:
700                                         iomap.flags |= MAP_16BIT; break;
701                                 case IO_DATA_PATH_WIDTH_AUTO:
702                                         iomap.flags |= MAP_AUTOSZ; break;
703                                 default:
704                                         break;
705                                 }
706                                 iomap.start = s->io[i].BasePort;
707                                 iomap.stop = iomap.start + s->io[i].NumPorts - 1;
708                                 s->ops->set_io_map(s, &iomap);
709                                 s->io[i].Config++;
710                         }
711         }
712
713         c->state |= CONFIG_LOCKED;
714         p_dev->state |= CLIENT_CONFIG_LOCKED;
715         return CS_SUCCESS;
716 } /* pcmcia_request_configuration */
717 EXPORT_SYMBOL(pcmcia_request_configuration);
718
719
720 /** pcmcia_request_io
721  *
722  * Request_io() reserves ranges of port addresses for a socket.
723  * I have not implemented range sharing or alias addressing.
724  */
725 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
726 {
727         struct pcmcia_socket *s = p_dev->socket;
728         config_t *c;
729
730         if (!(s->state & SOCKET_PRESENT))
731                 return CS_NO_CARD;
732
733         if (!req)
734                 return CS_UNSUPPORTED_MODE;
735         c = CONFIG(p_dev);
736         if (c->state & CONFIG_LOCKED)
737                 return CS_CONFIGURATION_LOCKED;
738         if (c->state & CONFIG_IO_REQ)
739                 return CS_IN_USE;
740         if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
741                 return CS_BAD_ATTRIBUTE;
742         if ((req->NumPorts2 > 0) &&
743             (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
744                 return CS_BAD_ATTRIBUTE;
745
746         if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
747                            req->NumPorts1, req->IOAddrLines))
748                 return CS_IN_USE;
749
750         if (req->NumPorts2) {
751                 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
752                                    req->NumPorts2, req->IOAddrLines)) {
753                         release_io_space(s, req->BasePort1, req->NumPorts1);
754                         return CS_IN_USE;
755                 }
756         }
757
758         c->io = *req;
759         c->state |= CONFIG_IO_REQ;
760         p_dev->state |= CLIENT_IO_REQ;
761         return CS_SUCCESS;
762 } /* pcmcia_request_io */
763 EXPORT_SYMBOL(pcmcia_request_io);
764
765
766 /** pcmcia_request_irq
767  *
768  * Request_irq() reserves an irq for this client.
769  *
770  * Also, since Linux only reserves irq's when they are actually
771  * hooked, we don't guarantee that an irq will still be available
772  * when the configuration is locked.  Now that I think about it,
773  * there might be a way to fix this using a dummy handler.
774  */
775
776 #ifdef CONFIG_PCMCIA_PROBE
777 static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
778 {
779         return IRQ_NONE;
780 }
781 #endif
782
783 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
784 {
785         struct pcmcia_socket *s = p_dev->socket;
786         config_t *c;
787         int ret = CS_IN_USE, irq = 0;
788
789         if (!(s->state & SOCKET_PRESENT))
790                 return CS_NO_CARD;
791         c = CONFIG(p_dev);
792         if (c->state & CONFIG_LOCKED)
793                 return CS_CONFIGURATION_LOCKED;
794         if (c->state & CONFIG_IRQ_REQ)
795                 return CS_IN_USE;
796
797 #ifdef CONFIG_PCMCIA_PROBE
798         if (s->irq.AssignedIRQ != 0) {
799                 /* If the interrupt is already assigned, it must be the same */
800                 irq = s->irq.AssignedIRQ;
801         } else {
802                 int try;
803                 u32 mask = s->irq_mask;
804                 void *data = NULL;
805
806                 for (try = 0; try < 64; try++) {
807                         irq = try % 32;
808
809                         /* marked as available by driver, and not blocked by userspace? */
810                         if (!((mask >> irq) & 1))
811                                 continue;
812
813                         /* avoid an IRQ which is already used by a PCMCIA card */
814                         if ((try < 32) && pcmcia_used_irq[irq])
815                                 continue;
816
817                         /* register the correct driver, if possible, of check whether
818                          * registering a dummy handle works, i.e. if the IRQ isn't
819                          * marked as used by the kernel resource management core */
820                         ret = request_irq(irq,
821                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
822                                           ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
823                                            (s->functions > 1) ||
824                                            (irq == s->pci_irq)) ? SA_SHIRQ : 0,
825                                           p_dev->dev.bus_id,
826                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
827                         if (!ret) {
828                                 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
829                                         free_irq(irq, data);
830                                 break;
831                         }
832                 }
833         }
834 #endif
835         if (ret) {
836                 if (!s->pci_irq)
837                         return ret;
838                 irq = s->pci_irq;
839         }
840
841         if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
842                 if (request_irq(irq, req->Handler,
843                                 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
844                                  (s->functions > 1) ||
845                                  (irq == s->pci_irq)) ? SA_SHIRQ : 0,
846                                 p_dev->dev.bus_id, req->Instance))
847                         return CS_IN_USE;
848         }
849
850         c->irq.Attributes = req->Attributes;
851         s->irq.AssignedIRQ = req->AssignedIRQ = irq;
852         s->irq.Config++;
853
854         c->state |= CONFIG_IRQ_REQ;
855         p_dev->state |= CLIENT_IRQ_REQ;
856
857 #ifdef CONFIG_PCMCIA_PROBE
858         pcmcia_used_irq[irq]++;
859 #endif
860
861         return CS_SUCCESS;
862 } /* pcmcia_request_irq */
863 EXPORT_SYMBOL(pcmcia_request_irq);
864
865
866 /** pcmcia_request_window
867  *
868  * Request_window() establishes a mapping between card memory space
869  * and system memory space.
870  */
871 int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
872 {
873         struct pcmcia_socket *s = (*p_dev)->socket;
874         window_t *win;
875         u_long align;
876         int w;
877
878         if (!(s->state & SOCKET_PRESENT))
879                 return CS_NO_CARD;
880         if (req->Attributes & (WIN_PAGED | WIN_SHARED))
881                 return CS_BAD_ATTRIBUTE;
882
883         /* Window size defaults to smallest available */
884         if (req->Size == 0)
885                 req->Size = s->map_size;
886         align = (((s->features & SS_CAP_MEM_ALIGN) ||
887                   (req->Attributes & WIN_STRICT_ALIGN)) ?
888                  req->Size : s->map_size);
889         if (req->Size & (s->map_size-1))
890                 return CS_BAD_SIZE;
891         if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
892             (req->Base & (align-1)))
893                 return CS_BAD_BASE;
894         if (req->Base)
895                 align = 0;
896
897         /* Allocate system memory window */
898         for (w = 0; w < MAX_WIN; w++)
899                 if (!(s->state & SOCKET_WIN_REQ(w))) break;
900         if (w == MAX_WIN)
901                 return CS_OUT_OF_RESOURCE;
902
903         win = &s->win[w];
904         win->magic = WINDOW_MAGIC;
905         win->index = w;
906         win->handle = *p_dev;
907         win->sock = s;
908
909         if (!(s->features & SS_CAP_STATIC_MAP)) {
910                 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
911                                                       (req->Attributes & WIN_MAP_BELOW_1MB), s);
912                 if (!win->ctl.res)
913                         return CS_IN_USE;
914         }
915         (*p_dev)->state |= CLIENT_WIN_REQ(w);
916
917         /* Configure the socket controller */
918         win->ctl.map = w+1;
919         win->ctl.flags = 0;
920         win->ctl.speed = req->AccessSpeed;
921         if (req->Attributes & WIN_MEMORY_TYPE)
922                 win->ctl.flags |= MAP_ATTRIB;
923         if (req->Attributes & WIN_ENABLE)
924                 win->ctl.flags |= MAP_ACTIVE;
925         if (req->Attributes & WIN_DATA_WIDTH_16)
926                 win->ctl.flags |= MAP_16BIT;
927         if (req->Attributes & WIN_USE_WAIT)
928                 win->ctl.flags |= MAP_USE_WAIT;
929         win->ctl.card_start = 0;
930         if (s->ops->set_mem_map(s, &win->ctl) != 0)
931                 return CS_BAD_ARGS;
932         s->state |= SOCKET_WIN_REQ(w);
933
934         /* Return window handle */
935         if (s->features & SS_CAP_STATIC_MAP) {
936                 req->Base = win->ctl.static_start;
937         } else {
938                 req->Base = win->ctl.res->start;
939         }
940         *wh = win;
941
942         return CS_SUCCESS;
943 } /* pcmcia_request_window */
944 EXPORT_SYMBOL(pcmcia_request_window);