[PATCH] pcmcia: 8 and 16 bit access for static_map
[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(client_handle_t handle,
206                                          conf_reg_t *reg)
207 {
208         struct pcmcia_socket *s;
209         if (CHECK_HANDLE(handle))
210                 return CS_BAD_HANDLE;
211         s = SOCKET(handle);
212         return pccard_access_configuration_register(s, handle->Function, reg);
213 }
214 EXPORT_SYMBOL(pcmcia_access_configuration_register);
215
216
217
218 int pccard_get_configuration_info(struct pcmcia_socket *s,
219                                   unsigned int function,
220                                   config_info_t *config)
221 {
222         config_t *c;
223
224         if (!(s->state & SOCKET_PRESENT))
225                 return CS_NO_CARD;
226
227         config->Function = function;
228
229 #ifdef CONFIG_CARDBUS
230         if (s->state & SOCKET_CARDBUS) {
231                 memset(config, 0, sizeof(config_info_t));
232                 config->Vcc = s->socket.Vcc;
233                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
234                 config->Option = s->cb_dev->subordinate->number;
235                 if (s->state & SOCKET_CARDBUS_CONFIG) {
236                         config->Attributes = CONF_VALID_CLIENT;
237                         config->IntType = INT_CARDBUS;
238                         config->AssignedIRQ = s->irq.AssignedIRQ;
239                         if (config->AssignedIRQ)
240                                 config->Attributes |= CONF_ENABLE_IRQ;
241                         config->BasePort1 = s->io[0].BasePort;
242                         config->NumPorts1 = s->io[0].NumPorts;
243                 }
244                 return CS_SUCCESS;
245         }
246 #endif
247
248         c = (s->config != NULL) ? &s->config[function] : NULL;
249
250         if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
251                 config->Attributes = 0;
252                 config->Vcc = s->socket.Vcc;
253                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
254                 return CS_SUCCESS;
255         }
256
257         /* !!! This is a hack !!! */
258         memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
259         config->Attributes |= CONF_VALID_CLIENT;
260         config->CardValues = c->CardValues;
261         config->IRQAttributes = c->irq.Attributes;
262         config->AssignedIRQ = s->irq.AssignedIRQ;
263         config->BasePort1 = c->io.BasePort1;
264         config->NumPorts1 = c->io.NumPorts1;
265         config->Attributes1 = c->io.Attributes1;
266         config->BasePort2 = c->io.BasePort2;
267         config->NumPorts2 = c->io.NumPorts2;
268         config->Attributes2 = c->io.Attributes2;
269         config->IOAddrLines = c->io.IOAddrLines;
270
271         return CS_SUCCESS;
272 } /* pccard_get_configuration_info */
273
274 int pcmcia_get_configuration_info(client_handle_t handle,
275                                   config_info_t *config)
276 {
277         struct pcmcia_socket *s;
278
279         if ((CHECK_HANDLE(handle)) || !config)
280                 return CS_BAD_HANDLE;
281         s = SOCKET(handle);
282         if (!s)
283                 return CS_BAD_HANDLE;
284         return pccard_get_configuration_info(s, handle->Function, config);
285 }
286 EXPORT_SYMBOL(pcmcia_get_configuration_info);
287
288
289 /** pcmcia_get_window
290  */
291 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
292                       int idx, win_req_t *req)
293 {
294         window_t *win;
295         int w;
296
297         if (!s || !(s->state & SOCKET_PRESENT))
298                 return CS_NO_CARD;
299         for (w = idx; w < MAX_WIN; w++)
300                 if (s->state & SOCKET_WIN_REQ(w))
301                         break;
302         if (w == MAX_WIN)
303                 return CS_NO_MORE_ITEMS;
304         win = &s->win[w];
305         req->Base = win->ctl.res->start;
306         req->Size = win->ctl.res->end - win->ctl.res->start + 1;
307         req->AccessSpeed = win->ctl.speed;
308         req->Attributes = 0;
309         if (win->ctl.flags & MAP_ATTRIB)
310                 req->Attributes |= WIN_MEMORY_TYPE_AM;
311         if (win->ctl.flags & MAP_ACTIVE)
312                 req->Attributes |= WIN_ENABLE;
313         if (win->ctl.flags & MAP_16BIT)
314                 req->Attributes |= WIN_DATA_WIDTH_16;
315         if (win->ctl.flags & MAP_USE_WAIT)
316                 req->Attributes |= WIN_USE_WAIT;
317         *handle = win;
318         return CS_SUCCESS;
319 } /* pcmcia_get_window */
320 EXPORT_SYMBOL(pcmcia_get_window);
321
322
323 /** pccard_get_status
324  *
325  * Get the current socket state bits.  We don't support the latched
326  * SocketState yet: I haven't seen any point for it.
327  */
328
329 int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
330                       cs_status_t *status)
331 {
332         config_t *c;
333         int val;
334
335         s->ops->get_status(s, &val);
336         status->CardState = status->SocketState = 0;
337         status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
338         status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
339         status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
340         status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
341         if (s->state & SOCKET_SUSPEND)
342                 status->CardState |= CS_EVENT_PM_SUSPEND;
343         if (!(s->state & SOCKET_PRESENT))
344                 return CS_NO_CARD;
345
346         c = (s->config != NULL) ? &s->config[function] : NULL;
347         if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
348             (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
349                 u_char reg;
350                 if (c->Present & PRESENT_PIN_REPLACE) {
351                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
352                         status->CardState |=
353                                 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
354                         status->CardState |=
355                                 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
356                         status->CardState |=
357                                 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
358                         status->CardState |=
359                                 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
360                 } else {
361                         /* No PRR?  Then assume we're always ready */
362                         status->CardState |= CS_EVENT_READY_CHANGE;
363                 }
364                 if (c->Present & PRESENT_EXT_STATUS) {
365                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
366                         status->CardState |=
367                                 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
368                 }
369                 return CS_SUCCESS;
370         }
371         status->CardState |=
372                 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
373         status->CardState |=
374                 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
375         status->CardState |=
376                 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
377         status->CardState |=
378                 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
379         return CS_SUCCESS;
380 } /* pccard_get_status */
381
382 int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
383 {
384         struct pcmcia_socket *s;
385         if (CHECK_HANDLE(handle))
386                 return CS_BAD_HANDLE;
387         s = SOCKET(handle);
388         return pccard_get_status(s, handle->Function, status);
389 }
390 EXPORT_SYMBOL(pcmcia_get_status);
391
392
393
394 /** pcmcia_get_mem_page
395  *
396  * Change the card address of an already open memory window.
397  */
398 int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
399 {
400         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
401                 return CS_BAD_HANDLE;
402         req->Page = 0;
403         req->CardOffset = win->ctl.card_start;
404         return CS_SUCCESS;
405 } /* pcmcia_get_mem_page */
406 EXPORT_SYMBOL(pcmcia_get_mem_page);
407
408
409 int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
410 {
411         struct pcmcia_socket *s;
412         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
413                 return CS_BAD_HANDLE;
414         if (req->Page != 0)
415                 return CS_BAD_PAGE;
416         s = win->sock;
417         win->ctl.card_start = req->CardOffset;
418         if (s->ops->set_mem_map(s, &win->ctl) != 0)
419                 return CS_BAD_OFFSET;
420         return CS_SUCCESS;
421 } /* pcmcia_map_mem_page */
422 EXPORT_SYMBOL(pcmcia_map_mem_page);
423
424
425 /** pcmcia_modify_configuration
426  *
427  * Modify a locked socket configuration
428  */
429 int pcmcia_modify_configuration(client_handle_t handle,
430                                 modconf_t *mod)
431 {
432         struct pcmcia_socket *s;
433         config_t *c;
434
435         if (CHECK_HANDLE(handle))
436                 return CS_BAD_HANDLE;
437         s = SOCKET(handle);
438         c = CONFIG(handle);
439         if (!(s->state & SOCKET_PRESENT))
440                 return CS_NO_CARD;
441         if (!(c->state & CONFIG_LOCKED))
442                 return CS_CONFIGURATION_LOCKED;
443
444         if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
445                 if (mod->Attributes & CONF_ENABLE_IRQ) {
446                         c->Attributes |= CONF_ENABLE_IRQ;
447                         s->socket.io_irq = s->irq.AssignedIRQ;
448                 } else {
449                         c->Attributes &= ~CONF_ENABLE_IRQ;
450                         s->socket.io_irq = 0;
451                 }
452                 s->ops->set_socket(s, &s->socket);
453         }
454
455         if (mod->Attributes & CONF_VCC_CHANGE_VALID)
456                 return CS_BAD_VCC;
457
458         /* We only allow changing Vpp1 and Vpp2 to the same value */
459         if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
460             (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
461                 if (mod->Vpp1 != mod->Vpp2)
462                         return CS_BAD_VPP;
463                 c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
464                 if (s->ops->set_socket(s, &s->socket))
465                         return CS_BAD_VPP;
466         } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
467                    (mod->Attributes & CONF_VPP2_CHANGE_VALID))
468                 return CS_BAD_VPP;
469
470         return CS_SUCCESS;
471 } /* modify_configuration */
472 EXPORT_SYMBOL(pcmcia_modify_configuration);
473
474
475 int pcmcia_release_configuration(client_handle_t handle)
476 {
477         pccard_io_map io = { 0, 0, 0, 0, 1 };
478         struct pcmcia_socket *s;
479         int i;
480
481         if (CHECK_HANDLE(handle) ||
482             !(handle->state & CLIENT_CONFIG_LOCKED))
483                 return CS_BAD_HANDLE;
484         handle->state &= ~CLIENT_CONFIG_LOCKED;
485         s = SOCKET(handle);
486
487 #ifdef CONFIG_CARDBUS
488         if (handle->state & CLIENT_CARDBUS)
489                 return CS_SUCCESS;
490 #endif
491
492         if (!(handle->state & CLIENT_STALE)) {
493                 config_t *c = CONFIG(handle);
494                 if (--(s->lock_count) == 0) {
495                         s->socket.flags = SS_OUTPUT_ENA;   /* Is this correct? */
496                         s->socket.Vpp = 0;
497                         s->socket.io_irq = 0;
498                         s->ops->set_socket(s, &s->socket);
499                 }
500                 if (c->state & CONFIG_IO_REQ)
501                         for (i = 0; i < MAX_IO_WIN; i++) {
502                                 if (s->io[i].NumPorts == 0)
503                                         continue;
504                                 s->io[i].Config--;
505                                 if (s->io[i].Config != 0)
506                                         continue;
507                                 io.map = i;
508                                 s->ops->set_io_map(s, &io);
509                         }
510                 c->state &= ~CONFIG_LOCKED;
511         }
512
513         return CS_SUCCESS;
514 } /* pcmcia_release_configuration */
515 EXPORT_SYMBOL(pcmcia_release_configuration);
516
517
518 /** pcmcia_release_io
519  *
520  * Release_io() releases the I/O ranges allocated by a client.  This
521  * may be invoked some time after a card ejection has already dumped
522  * the actual socket configuration, so if the client is "stale", we
523  * don't bother checking the port ranges against the current socket
524  * values.
525  */
526 int pcmcia_release_io(client_handle_t handle, io_req_t *req)
527 {
528         struct pcmcia_socket *s;
529
530         if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IO_REQ))
531                 return CS_BAD_HANDLE;
532         handle->state &= ~CLIENT_IO_REQ;
533         s = SOCKET(handle);
534
535 #ifdef CONFIG_CARDBUS
536         if (handle->state & CLIENT_CARDBUS)
537                 return CS_SUCCESS;
538 #endif
539
540         if (!(handle->state & CLIENT_STALE)) {
541                 config_t *c = CONFIG(handle);
542                 if (c->state & CONFIG_LOCKED)
543                         return CS_CONFIGURATION_LOCKED;
544                 if ((c->io.BasePort1 != req->BasePort1) ||
545                     (c->io.NumPorts1 != req->NumPorts1) ||
546                     (c->io.BasePort2 != req->BasePort2) ||
547                     (c->io.NumPorts2 != req->NumPorts2))
548                         return CS_BAD_ARGS;
549                 c->state &= ~CONFIG_IO_REQ;
550         }
551
552         release_io_space(s, req->BasePort1, req->NumPorts1);
553         if (req->NumPorts2)
554                 release_io_space(s, req->BasePort2, req->NumPorts2);
555
556         return CS_SUCCESS;
557 } /* pcmcia_release_io */
558 EXPORT_SYMBOL(pcmcia_release_io);
559
560
561 int pcmcia_release_irq(client_handle_t handle, irq_req_t *req)
562 {
563         struct pcmcia_socket *s;
564         if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IRQ_REQ))
565                 return CS_BAD_HANDLE;
566         handle->state &= ~CLIENT_IRQ_REQ;
567         s = SOCKET(handle);
568
569         if (!(handle->state & CLIENT_STALE)) {
570                 config_t *c = CONFIG(handle);
571                 if (c->state & CONFIG_LOCKED)
572                         return CS_CONFIGURATION_LOCKED;
573                 if (c->irq.Attributes != req->Attributes)
574                         return CS_BAD_ATTRIBUTE;
575                 if (s->irq.AssignedIRQ != req->AssignedIRQ)
576                         return CS_BAD_IRQ;
577                 if (--s->irq.Config == 0) {
578                         c->state &= ~CONFIG_IRQ_REQ;
579                         s->irq.AssignedIRQ = 0;
580                 }
581         }
582
583         if (req->Attributes & IRQ_HANDLE_PRESENT) {
584                 free_irq(req->AssignedIRQ, req->Instance);
585         }
586
587 #ifdef CONFIG_PCMCIA_PROBE
588         pcmcia_used_irq[req->AssignedIRQ]--;
589 #endif
590
591         return CS_SUCCESS;
592 } /* pcmcia_release_irq */
593 EXPORT_SYMBOL(pcmcia_release_irq);
594
595
596 int pcmcia_release_window(window_handle_t win)
597 {
598         struct pcmcia_socket *s;
599
600         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
601                 return CS_BAD_HANDLE;
602         s = win->sock;
603         if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
604                 return CS_BAD_HANDLE;
605
606         /* Shut down memory window */
607         win->ctl.flags &= ~MAP_ACTIVE;
608         s->ops->set_mem_map(s, &win->ctl);
609         s->state &= ~SOCKET_WIN_REQ(win->index);
610
611         /* Release system memory */
612         if (win->ctl.res) {
613                 release_resource(win->ctl.res);
614                 kfree(win->ctl.res);
615                 win->ctl.res = NULL;
616         }
617         win->handle->state &= ~CLIENT_WIN_REQ(win->index);
618
619         win->magic = 0;
620
621         return CS_SUCCESS;
622 } /* pcmcia_release_window */
623 EXPORT_SYMBOL(pcmcia_release_window);
624
625
626 int pcmcia_request_configuration(client_handle_t handle,
627                                  config_req_t *req)
628 {
629         int i;
630         u_int base;
631         struct pcmcia_socket *s;
632         config_t *c;
633         pccard_io_map iomap;
634
635         if (CHECK_HANDLE(handle))
636                 return CS_BAD_HANDLE;
637         s = SOCKET(handle);
638         if (!(s->state & SOCKET_PRESENT))
639                 return CS_NO_CARD;
640
641 #ifdef CONFIG_CARDBUS
642         if (handle->state & CLIENT_CARDBUS)
643                 return CS_UNSUPPORTED_MODE;
644 #endif
645
646         if (req->IntType & INT_CARDBUS)
647                 return CS_UNSUPPORTED_MODE;
648         c = CONFIG(handle);
649         if (c->state & CONFIG_LOCKED)
650                 return CS_CONFIGURATION_LOCKED;
651
652         /* Do power control.  We don't allow changes in Vcc. */
653         if (s->socket.Vcc != req->Vcc)
654                 return CS_BAD_VCC;
655         if (req->Vpp1 != req->Vpp2)
656                 return CS_BAD_VPP;
657         s->socket.Vpp = req->Vpp1;
658         if (s->ops->set_socket(s, &s->socket))
659                 return CS_BAD_VPP;
660
661         c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1;
662
663         /* Pick memory or I/O card, DMA mode, interrupt */
664         c->IntType = req->IntType;
665         c->Attributes = req->Attributes;
666         if (req->IntType & INT_MEMORY_AND_IO)
667                 s->socket.flags |= SS_IOCARD;
668         if (req->IntType & INT_ZOOMED_VIDEO)
669                 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
670         if (req->Attributes & CONF_ENABLE_DMA)
671                 s->socket.flags |= SS_DMA_MODE;
672         if (req->Attributes & CONF_ENABLE_SPKR)
673                 s->socket.flags |= SS_SPKR_ENA;
674         if (req->Attributes & CONF_ENABLE_IRQ)
675                 s->socket.io_irq = s->irq.AssignedIRQ;
676         else
677                 s->socket.io_irq = 0;
678         s->ops->set_socket(s, &s->socket);
679         s->lock_count++;
680
681         /* Set up CIS configuration registers */
682         base = c->ConfigBase = req->ConfigBase;
683         c->Present = c->CardValues = req->Present;
684         if (req->Present & PRESENT_COPY) {
685                 c->Copy = req->Copy;
686                 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
687         }
688         if (req->Present & PRESENT_OPTION) {
689                 if (s->functions == 1) {
690                         c->Option = req->ConfigIndex & COR_CONFIG_MASK;
691                 } else {
692                         c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
693                         c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
694                         if (req->Present & PRESENT_IOBASE_0)
695                                 c->Option |= COR_ADDR_DECODE;
696                 }
697                 if (c->state & CONFIG_IRQ_REQ)
698                         if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
699                                 c->Option |= COR_LEVEL_REQ;
700                 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
701                 mdelay(40);
702         }
703         if (req->Present & PRESENT_STATUS) {
704                 c->Status = req->Status;
705                 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
706         }
707         if (req->Present & PRESENT_PIN_REPLACE) {
708                 c->Pin = req->Pin;
709                 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
710         }
711         if (req->Present & PRESENT_EXT_STATUS) {
712                 c->ExtStatus = req->ExtStatus;
713                 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
714         }
715         if (req->Present & PRESENT_IOBASE_0) {
716                 u_char b = c->io.BasePort1 & 0xff;
717                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
718                 b = (c->io.BasePort1 >> 8) & 0xff;
719                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
720         }
721         if (req->Present & PRESENT_IOSIZE) {
722                 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
723                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
724         }
725
726         /* Configure I/O windows */
727         if (c->state & CONFIG_IO_REQ) {
728                 iomap.speed = io_speed;
729                 for (i = 0; i < MAX_IO_WIN; i++)
730                         if (s->io[i].NumPorts != 0) {
731                                 iomap.map = i;
732                                 iomap.flags = MAP_ACTIVE;
733                                 switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
734                                 case IO_DATA_PATH_WIDTH_16:
735                                         iomap.flags |= MAP_16BIT; break;
736                                 case IO_DATA_PATH_WIDTH_AUTO:
737                                         iomap.flags |= MAP_AUTOSZ; break;
738                                 default:
739                                         break;
740                                 }
741                                 iomap.start = s->io[i].BasePort;
742                                 iomap.stop = iomap.start + s->io[i].NumPorts - 1;
743                                 s->ops->set_io_map(s, &iomap);
744                                 s->io[i].Config++;
745                         }
746         }
747
748         c->state |= CONFIG_LOCKED;
749         handle->state |= CLIENT_CONFIG_LOCKED;
750         return CS_SUCCESS;
751 } /* pcmcia_request_configuration */
752 EXPORT_SYMBOL(pcmcia_request_configuration);
753
754
755 /** pcmcia_request_io
756  *
757  * Request_io() reserves ranges of port addresses for a socket.
758  * I have not implemented range sharing or alias addressing.
759  */
760 int pcmcia_request_io(client_handle_t handle, io_req_t *req)
761 {
762         struct pcmcia_socket *s;
763         config_t *c;
764
765         if (CHECK_HANDLE(handle))
766                 return CS_BAD_HANDLE;
767         s = SOCKET(handle);
768         if (!(s->state & SOCKET_PRESENT))
769                 return CS_NO_CARD;
770
771         if (handle->state & CLIENT_CARDBUS) {
772 #ifdef CONFIG_CARDBUS
773                 handle->state |= CLIENT_IO_REQ;
774                 return CS_SUCCESS;
775 #else
776                 return CS_UNSUPPORTED_FUNCTION;
777 #endif
778         }
779
780         if (!req)
781                 return CS_UNSUPPORTED_MODE;
782         c = CONFIG(handle);
783         if (c->state & CONFIG_LOCKED)
784                 return CS_CONFIGURATION_LOCKED;
785         if (c->state & CONFIG_IO_REQ)
786                 return CS_IN_USE;
787         if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
788                 return CS_BAD_ATTRIBUTE;
789         if ((req->NumPorts2 > 0) &&
790             (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
791                 return CS_BAD_ATTRIBUTE;
792
793         if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
794                            req->NumPorts1, req->IOAddrLines))
795                 return CS_IN_USE;
796
797         if (req->NumPorts2) {
798                 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
799                                    req->NumPorts2, req->IOAddrLines)) {
800                         release_io_space(s, req->BasePort1, req->NumPorts1);
801                         return CS_IN_USE;
802                 }
803         }
804
805         c->io = *req;
806         c->state |= CONFIG_IO_REQ;
807         handle->state |= CLIENT_IO_REQ;
808         return CS_SUCCESS;
809 } /* pcmcia_request_io */
810 EXPORT_SYMBOL(pcmcia_request_io);
811
812
813 /** pcmcia_request_irq
814  *
815  * Request_irq() reserves an irq for this client.
816  *
817  * Also, since Linux only reserves irq's when they are actually
818  * hooked, we don't guarantee that an irq will still be available
819  * when the configuration is locked.  Now that I think about it,
820  * there might be a way to fix this using a dummy handler.
821  */
822
823 #ifdef CONFIG_PCMCIA_PROBE
824 static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
825 {
826         return IRQ_NONE;
827 }
828 #endif
829
830 int pcmcia_request_irq(client_handle_t handle, irq_req_t *req)
831 {
832         struct pcmcia_socket *s;
833         config_t *c;
834         int ret = CS_IN_USE, irq = 0;
835         struct pcmcia_device *p_dev = handle_to_pdev(handle);
836
837         if (CHECK_HANDLE(handle))
838                 return CS_BAD_HANDLE;
839         s = SOCKET(handle);
840         if (!(s->state & SOCKET_PRESENT))
841                 return CS_NO_CARD;
842         c = CONFIG(handle);
843         if (c->state & CONFIG_LOCKED)
844                 return CS_CONFIGURATION_LOCKED;
845         if (c->state & CONFIG_IRQ_REQ)
846                 return CS_IN_USE;
847
848 #ifdef CONFIG_PCMCIA_PROBE
849         if (s->irq.AssignedIRQ != 0) {
850                 /* If the interrupt is already assigned, it must be the same */
851                 irq = s->irq.AssignedIRQ;
852         } else {
853                 int try;
854                 u32 mask = s->irq_mask;
855                 void *data = NULL;
856
857                 for (try = 0; try < 64; try++) {
858                         irq = try % 32;
859
860                         /* marked as available by driver, and not blocked by userspace? */
861                         if (!((mask >> irq) & 1))
862                                 continue;
863
864                         /* avoid an IRQ which is already used by a PCMCIA card */
865                         if ((try < 32) && pcmcia_used_irq[irq])
866                                 continue;
867
868                         /* register the correct driver, if possible, of check whether
869                          * registering a dummy handle works, i.e. if the IRQ isn't
870                          * marked as used by the kernel resource management core */
871                         ret = request_irq(irq,
872                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
873                                           ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
874                                            (s->functions > 1) ||
875                                            (irq == s->pci_irq)) ? SA_SHIRQ : 0,
876                                           p_dev->dev.bus_id,
877                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
878                         if (!ret) {
879                                 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
880                                         free_irq(irq, data);
881                                 break;
882                         }
883                 }
884         }
885 #endif
886         if (ret) {
887                 if (!s->pci_irq)
888                         return ret;
889                 irq = s->pci_irq;
890         }
891
892         if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
893                 if (request_irq(irq, req->Handler,
894                                 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
895                                  (s->functions > 1) ||
896                                  (irq == s->pci_irq)) ? SA_SHIRQ : 0,
897                                 p_dev->dev.bus_id, req->Instance))
898                         return CS_IN_USE;
899         }
900
901         c->irq.Attributes = req->Attributes;
902         s->irq.AssignedIRQ = req->AssignedIRQ = irq;
903         s->irq.Config++;
904
905         c->state |= CONFIG_IRQ_REQ;
906         handle->state |= CLIENT_IRQ_REQ;
907
908 #ifdef CONFIG_PCMCIA_PROBE
909         pcmcia_used_irq[irq]++;
910 #endif
911
912         return CS_SUCCESS;
913 } /* pcmcia_request_irq */
914 EXPORT_SYMBOL(pcmcia_request_irq);
915
916
917 /** pcmcia_request_window
918  *
919  * Request_window() establishes a mapping between card memory space
920  * and system memory space.
921  */
922 int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh)
923 {
924         struct pcmcia_socket *s;
925         window_t *win;
926         u_long align;
927         int w;
928
929         if (CHECK_HANDLE(*handle))
930                 return CS_BAD_HANDLE;
931         s = (*handle)->Socket;
932         if (!(s->state & SOCKET_PRESENT))
933                 return CS_NO_CARD;
934         if (req->Attributes & (WIN_PAGED | WIN_SHARED))
935                 return CS_BAD_ATTRIBUTE;
936
937         /* Window size defaults to smallest available */
938         if (req->Size == 0)
939                 req->Size = s->map_size;
940         align = (((s->features & SS_CAP_MEM_ALIGN) ||
941                   (req->Attributes & WIN_STRICT_ALIGN)) ?
942                  req->Size : s->map_size);
943         if (req->Size & (s->map_size-1))
944                 return CS_BAD_SIZE;
945         if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
946             (req->Base & (align-1)))
947                 return CS_BAD_BASE;
948         if (req->Base)
949                 align = 0;
950
951         /* Allocate system memory window */
952         for (w = 0; w < MAX_WIN; w++)
953                 if (!(s->state & SOCKET_WIN_REQ(w))) break;
954         if (w == MAX_WIN)
955                 return CS_OUT_OF_RESOURCE;
956
957         win = &s->win[w];
958         win->magic = WINDOW_MAGIC;
959         win->index = w;
960         win->handle = *handle;
961         win->sock = s;
962
963         if (!(s->features & SS_CAP_STATIC_MAP)) {
964                 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
965                                                       (req->Attributes & WIN_MAP_BELOW_1MB), s);
966                 if (!win->ctl.res)
967                         return CS_IN_USE;
968         }
969         (*handle)->state |= CLIENT_WIN_REQ(w);
970
971         /* Configure the socket controller */
972         win->ctl.map = w+1;
973         win->ctl.flags = 0;
974         win->ctl.speed = req->AccessSpeed;
975         if (req->Attributes & WIN_MEMORY_TYPE)
976                 win->ctl.flags |= MAP_ATTRIB;
977         if (req->Attributes & WIN_ENABLE)
978                 win->ctl.flags |= MAP_ACTIVE;
979         if (req->Attributes & WIN_DATA_WIDTH_16)
980                 win->ctl.flags |= MAP_16BIT;
981         if (req->Attributes & WIN_USE_WAIT)
982                 win->ctl.flags |= MAP_USE_WAIT;
983         win->ctl.card_start = 0;
984         if (s->ops->set_mem_map(s, &win->ctl) != 0)
985                 return CS_BAD_ARGS;
986         s->state |= SOCKET_WIN_REQ(w);
987
988         /* Return window handle */
989         if (s->features & SS_CAP_STATIC_MAP) {
990                 req->Base = win->ctl.static_start;
991         } else {
992                 req->Base = win->ctl.res->start;
993         }
994         *wh = win;
995
996         return CS_SUCCESS;
997 } /* pcmcia_request_window */
998 EXPORT_SYMBOL(pcmcia_request_window);