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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 | static const char *release = "Linux Kernel Card Services"; | |
40 | ||
41 | /* Access speed for IO windows */ | |
42 | static int io_speed = 0; | |
43 | module_param(io_speed, int, 0444); | |
44 | ||
45 | ||
46 | #ifdef CONFIG_PCMCIA_PROBE | |
47 | /* mask of IRQs already reserved by other cards, we should avoid using them */ | |
48 | static u8 pcmcia_used_irq[NR_IRQS]; | |
49 | #endif | |
50 | ||
51 | ||
52 | #ifdef DEBUG | |
53 | extern int ds_pc_debug; | |
54 | #define cs_socket_name(skt) ((skt)->dev.class_id) | |
55 | ||
56 | #define ds_dbg(skt, lvl, fmt, arg...) do { \ | |
57 | if (ds_pc_debug >= lvl) \ | |
58 | printk(KERN_DEBUG "pcmcia_resource: %s: " fmt, \ | |
59 | cs_socket_name(skt) , ## arg); \ | |
60 | } while (0) | |
61 | #else | |
62 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
63 | #endif | |
64 | ||
65 | ||
66 | ||
67 | /** alloc_io_space | |
68 | * | |
69 | * Special stuff for managing IO windows, because they are scarce | |
70 | */ | |
71 | ||
72 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base, | |
73 | ioaddr_t num, u_int lines) | |
74 | { | |
75 | int i; | |
76 | kio_addr_t try, align; | |
77 | ||
78 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
79 | if (align && (align < num)) { | |
80 | if (*base) { | |
81 | ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n", | |
82 | num, align); | |
83 | align = 0; | |
84 | } else | |
85 | while (align && (align < num)) align <<= 1; | |
86 | } | |
87 | if (*base & ~(align-1)) { | |
88 | ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n", | |
89 | *base, align); | |
90 | align = 0; | |
91 | } | |
92 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
93 | *base = s->io_offset | (*base & 0x0fff); | |
94 | return 0; | |
95 | } | |
96 | /* Check for an already-allocated window that must conflict with | |
97 | * what was asked for. It is a hack because it does not catch all | |
98 | * potential conflicts, just the most obvious ones. | |
99 | */ | |
100 | for (i = 0; i < MAX_IO_WIN; i++) | |
101 | if ((s->io[i].NumPorts != 0) && | |
102 | ((s->io[i].BasePort & (align-1)) == *base)) | |
103 | return 1; | |
104 | for (i = 0; i < MAX_IO_WIN; i++) { | |
105 | if (s->io[i].NumPorts == 0) { | |
106 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); | |
107 | if (s->io[i].res) { | |
108 | s->io[i].Attributes = attr; | |
109 | s->io[i].BasePort = *base = s->io[i].res->start; | |
110 | s->io[i].NumPorts = s->io[i].InUse = num; | |
111 | break; | |
112 | } else | |
113 | return 1; | |
114 | } else if (s->io[i].Attributes != attr) | |
115 | continue; | |
116 | /* Try to extend top of window */ | |
117 | try = s->io[i].BasePort + s->io[i].NumPorts; | |
118 | if ((*base == 0) || (*base == try)) | |
119 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
120 | s->io[i].res->end + num, s) == 0) { | |
121 | *base = try; | |
122 | s->io[i].NumPorts += num; | |
123 | s->io[i].InUse += num; | |
124 | break; | |
125 | } | |
126 | /* Try to extend bottom of window */ | |
127 | try = s->io[i].BasePort - num; | |
128 | if ((*base == 0) || (*base == try)) | |
129 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
130 | s->io[i].res->end, s) == 0) { | |
131 | s->io[i].BasePort = *base = try; | |
132 | s->io[i].NumPorts += num; | |
133 | s->io[i].InUse += num; | |
134 | break; | |
135 | } | |
136 | } | |
137 | return (i == MAX_IO_WIN); | |
138 | } /* alloc_io_space */ | |
139 | ||
140 | ||
141 | static void release_io_space(struct pcmcia_socket *s, ioaddr_t base, | |
142 | ioaddr_t num) | |
143 | { | |
144 | int i; | |
145 | ||
146 | for (i = 0; i < MAX_IO_WIN; i++) { | |
147 | if ((s->io[i].BasePort <= base) && | |
148 | (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) { | |
149 | s->io[i].InUse -= num; | |
150 | /* Free the window if no one else is using it */ | |
151 | if (s->io[i].InUse == 0) { | |
152 | s->io[i].NumPorts = 0; | |
153 | release_resource(s->io[i].res); | |
154 | kfree(s->io[i].res); | |
155 | s->io[i].res = NULL; | |
156 | } | |
157 | } | |
158 | } | |
159 | } /* release_io_space */ | |
160 | ||
161 | ||
162 | /** pccard_access_configuration_register | |
163 | * | |
164 | * Access_configuration_register() reads and writes configuration | |
165 | * registers in attribute memory. Memory window 0 is reserved for | |
166 | * this and the tuple reading services. | |
167 | */ | |
168 | ||
169 | int pccard_access_configuration_register(struct pcmcia_socket *s, | |
170 | unsigned int function, | |
171 | conf_reg_t *reg) | |
172 | { | |
173 | config_t *c; | |
174 | int addr; | |
175 | u_char val; | |
176 | ||
177 | if (!s || !s->config) | |
178 | return CS_NO_CARD; | |
179 | ||
180 | c = &s->config[function]; | |
181 | ||
182 | if (c == NULL) | |
183 | return CS_NO_CARD; | |
184 | ||
185 | if (!(c->state & CONFIG_LOCKED)) | |
186 | return CS_CONFIGURATION_LOCKED; | |
187 | ||
188 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
189 | ||
190 | switch (reg->Action) { | |
191 | case CS_READ: | |
192 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
193 | reg->Value = val; | |
194 | break; | |
195 | case CS_WRITE: | |
196 | val = reg->Value; | |
197 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
198 | break; | |
199 | default: | |
200 | return CS_BAD_ARGS; | |
201 | break; | |
202 | } | |
203 | return CS_SUCCESS; | |
204 | } /* pccard_access_configuration_register */ | |
205 | EXPORT_SYMBOL(pccard_access_configuration_register); | |
206 | ||
207 | ||
208 | int pccard_get_configuration_info(struct pcmcia_socket *s, | |
209 | unsigned int function, | |
210 | config_info_t *config) | |
211 | { | |
212 | config_t *c; | |
213 | ||
214 | if (!(s->state & SOCKET_PRESENT)) | |
215 | return CS_NO_CARD; | |
216 | ||
217 | config->Function = function; | |
218 | ||
219 | #ifdef CONFIG_CARDBUS | |
220 | if (s->state & SOCKET_CARDBUS) { | |
221 | memset(config, 0, sizeof(config_info_t)); | |
222 | config->Vcc = s->socket.Vcc; | |
223 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
224 | config->Option = s->cb_dev->subordinate->number; | |
225 | if (s->state & SOCKET_CARDBUS_CONFIG) { | |
226 | config->Attributes = CONF_VALID_CLIENT; | |
227 | config->IntType = INT_CARDBUS; | |
228 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
229 | if (config->AssignedIRQ) | |
230 | config->Attributes |= CONF_ENABLE_IRQ; | |
231 | config->BasePort1 = s->io[0].BasePort; | |
232 | config->NumPorts1 = s->io[0].NumPorts; | |
233 | } | |
234 | return CS_SUCCESS; | |
235 | } | |
236 | #endif | |
237 | ||
238 | c = (s->config != NULL) ? &s->config[function] : NULL; | |
239 | ||
240 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { | |
241 | config->Attributes = 0; | |
242 | config->Vcc = s->socket.Vcc; | |
243 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
244 | return CS_SUCCESS; | |
245 | } | |
246 | ||
247 | /* !!! This is a hack !!! */ | |
248 | memcpy(&config->Attributes, &c->Attributes, sizeof(config_t)); | |
249 | config->Attributes |= CONF_VALID_CLIENT; | |
250 | config->CardValues = c->CardValues; | |
251 | config->IRQAttributes = c->irq.Attributes; | |
252 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
253 | config->BasePort1 = c->io.BasePort1; | |
254 | config->NumPorts1 = c->io.NumPorts1; | |
255 | config->Attributes1 = c->io.Attributes1; | |
256 | config->BasePort2 = c->io.BasePort2; | |
257 | config->NumPorts2 = c->io.NumPorts2; | |
258 | config->Attributes2 = c->io.Attributes2; | |
259 | config->IOAddrLines = c->io.IOAddrLines; | |
260 | ||
261 | return CS_SUCCESS; | |
262 | } /* pccard_get_configuration_info */ | |
263 | EXPORT_SYMBOL(pccard_get_configuration_info); | |
264 | ||
265 | ||
266 | /** pcmcia_get_card_services_info | |
267 | * | |
268 | * Return information about this version of Card Services | |
269 | */ | |
270 | ||
271 | int pcmcia_get_card_services_info(servinfo_t *info) | |
272 | { | |
273 | unsigned int socket_count = 0; | |
274 | struct list_head *tmp; | |
275 | info->Signature[0] = 'C'; | |
276 | info->Signature[1] = 'S'; | |
277 | down_read(&pcmcia_socket_list_rwsem); | |
278 | list_for_each(tmp, &pcmcia_socket_list) | |
279 | socket_count++; | |
280 | up_read(&pcmcia_socket_list_rwsem); | |
281 | info->Count = socket_count; | |
282 | info->Revision = CS_RELEASE_CODE; | |
283 | info->CSLevel = 0x0210; | |
284 | info->VendorString = (char *)release; | |
285 | return CS_SUCCESS; | |
286 | } /* get_card_services_info */ | |
287 | EXPORT_SYMBOL(pcmcia_get_card_services_info); | |
288 | ||
289 | ||
290 | /** pcmcia_get_window | |
291 | */ | |
292 | int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, | |
293 | int idx, win_req_t *req) | |
294 | { | |
295 | window_t *win; | |
296 | int w; | |
297 | ||
298 | if (!s || !(s->state & SOCKET_PRESENT)) | |
299 | return CS_NO_CARD; | |
300 | for (w = idx; w < MAX_WIN; w++) | |
301 | if (s->state & SOCKET_WIN_REQ(w)) | |
302 | break; | |
303 | if (w == MAX_WIN) | |
304 | return CS_NO_MORE_ITEMS; | |
305 | win = &s->win[w]; | |
306 | req->Base = win->ctl.res->start; | |
307 | req->Size = win->ctl.res->end - win->ctl.res->start + 1; | |
308 | req->AccessSpeed = win->ctl.speed; | |
309 | req->Attributes = 0; | |
310 | if (win->ctl.flags & MAP_ATTRIB) | |
311 | req->Attributes |= WIN_MEMORY_TYPE_AM; | |
312 | if (win->ctl.flags & MAP_ACTIVE) | |
313 | req->Attributes |= WIN_ENABLE; | |
314 | if (win->ctl.flags & MAP_16BIT) | |
315 | req->Attributes |= WIN_DATA_WIDTH_16; | |
316 | if (win->ctl.flags & MAP_USE_WAIT) | |
317 | req->Attributes |= WIN_USE_WAIT; | |
318 | *handle = win; | |
319 | return CS_SUCCESS; | |
320 | } /* pcmcia_get_window */ | |
321 | EXPORT_SYMBOL(pcmcia_get_window); | |
322 | ||
323 | ||
324 | /** pccard_get_status | |
325 | * | |
326 | * Get the current socket state bits. We don't support the latched | |
327 | * SocketState yet: I haven't seen any point for it. | |
328 | */ | |
329 | ||
330 | int pccard_get_status(struct pcmcia_socket *s, unsigned int function, | |
331 | cs_status_t *status) | |
332 | { | |
333 | config_t *c; | |
334 | int val; | |
335 | ||
336 | s->ops->get_status(s, &val); | |
337 | status->CardState = status->SocketState = 0; | |
338 | status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; | |
339 | status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; | |
340 | status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; | |
341 | status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; | |
342 | if (s->state & SOCKET_SUSPEND) | |
343 | status->CardState |= CS_EVENT_PM_SUSPEND; | |
344 | if (!(s->state & SOCKET_PRESENT)) | |
345 | return CS_NO_CARD; | |
346 | ||
347 | c = (s->config != NULL) ? &s->config[function] : NULL; | |
348 | if ((c != NULL) && (c->state & CONFIG_LOCKED) && | |
349 | (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { | |
350 | u_char reg; | |
351 | if (c->Present & PRESENT_PIN_REPLACE) { | |
352 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); | |
353 | status->CardState |= | |
354 | (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; | |
355 | status->CardState |= | |
356 | (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; | |
357 | status->CardState |= | |
358 | (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; | |
359 | status->CardState |= | |
360 | (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; | |
361 | } else { | |
362 | /* No PRR? Then assume we're always ready */ | |
363 | status->CardState |= CS_EVENT_READY_CHANGE; | |
364 | } | |
365 | if (c->Present & PRESENT_EXT_STATUS) { | |
366 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); | |
367 | status->CardState |= | |
368 | (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; | |
369 | } | |
370 | return CS_SUCCESS; | |
371 | } | |
372 | status->CardState |= | |
373 | (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; | |
374 | status->CardState |= | |
375 | (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; | |
376 | status->CardState |= | |
377 | (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; | |
378 | status->CardState |= | |
379 | (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; | |
380 | return CS_SUCCESS; | |
381 | } /* pccard_get_status */ | |
382 | EXPORT_SYMBOL(pccard_get_status); | |
383 | ||
384 | ||
385 | /** pcmcia_get_mem_page | |
386 | * | |
387 | * Change the card address of an already open memory window. | |
388 | */ | |
389 | int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) | |
390 | { | |
391 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
392 | return CS_BAD_HANDLE; | |
393 | req->Page = 0; | |
394 | req->CardOffset = win->ctl.card_start; | |
395 | return CS_SUCCESS; | |
396 | } /* pcmcia_get_mem_page */ | |
397 | EXPORT_SYMBOL(pcmcia_get_mem_page); | |
398 | ||
399 | ||
400 | int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) | |
401 | { | |
402 | struct pcmcia_socket *s; | |
403 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
404 | return CS_BAD_HANDLE; | |
405 | if (req->Page != 0) | |
406 | return CS_BAD_PAGE; | |
407 | s = win->sock; | |
408 | win->ctl.card_start = req->CardOffset; | |
409 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
410 | return CS_BAD_OFFSET; | |
411 | return CS_SUCCESS; | |
412 | } /* pcmcia_map_mem_page */ | |
413 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
414 | ||
415 | ||
416 | /** pcmcia_modify_configuration | |
417 | * | |
418 | * Modify a locked socket configuration | |
419 | */ | |
420 | int pcmcia_modify_configuration(client_handle_t handle, | |
421 | modconf_t *mod) | |
422 | { | |
423 | struct pcmcia_socket *s; | |
424 | config_t *c; | |
425 | ||
426 | if (CHECK_HANDLE(handle)) | |
427 | return CS_BAD_HANDLE; | |
428 | s = SOCKET(handle); | |
429 | c = CONFIG(handle); | |
430 | if (!(s->state & SOCKET_PRESENT)) | |
431 | return CS_NO_CARD; | |
432 | if (!(c->state & CONFIG_LOCKED)) | |
433 | return CS_CONFIGURATION_LOCKED; | |
434 | ||
435 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
436 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
437 | c->Attributes |= CONF_ENABLE_IRQ; | |
438 | s->socket.io_irq = s->irq.AssignedIRQ; | |
439 | } else { | |
440 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
441 | s->socket.io_irq = 0; | |
442 | } | |
443 | s->ops->set_socket(s, &s->socket); | |
444 | } | |
445 | ||
446 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) | |
447 | return CS_BAD_VCC; | |
448 | ||
449 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
450 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
451 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
452 | if (mod->Vpp1 != mod->Vpp2) | |
453 | return CS_BAD_VPP; | |
454 | c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1; | |
455 | if (s->ops->set_socket(s, &s->socket)) | |
456 | return CS_BAD_VPP; | |
457 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || | |
458 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) | |
459 | return CS_BAD_VPP; | |
460 | ||
461 | return CS_SUCCESS; | |
462 | } /* modify_configuration */ | |
463 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
464 | ||
465 | ||
466 | int pcmcia_release_configuration(client_handle_t handle) | |
467 | { | |
468 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
469 | struct pcmcia_socket *s; | |
470 | int i; | |
471 | ||
472 | if (CHECK_HANDLE(handle) || | |
473 | !(handle->state & CLIENT_CONFIG_LOCKED)) | |
474 | return CS_BAD_HANDLE; | |
475 | handle->state &= ~CLIENT_CONFIG_LOCKED; | |
476 | s = SOCKET(handle); | |
477 | ||
478 | #ifdef CONFIG_CARDBUS | |
479 | if (handle->state & CLIENT_CARDBUS) | |
480 | return CS_SUCCESS; | |
481 | #endif | |
482 | ||
483 | if (!(handle->state & CLIENT_STALE)) { | |
484 | config_t *c = CONFIG(handle); | |
485 | if (--(s->lock_count) == 0) { | |
486 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
487 | s->socket.Vpp = 0; | |
488 | s->socket.io_irq = 0; | |
489 | s->ops->set_socket(s, &s->socket); | |
490 | } | |
491 | if (c->state & CONFIG_IO_REQ) | |
492 | for (i = 0; i < MAX_IO_WIN; i++) { | |
493 | if (s->io[i].NumPorts == 0) | |
494 | continue; | |
495 | s->io[i].Config--; | |
496 | if (s->io[i].Config != 0) | |
497 | continue; | |
498 | io.map = i; | |
499 | s->ops->set_io_map(s, &io); | |
500 | } | |
501 | c->state &= ~CONFIG_LOCKED; | |
502 | } | |
503 | ||
504 | return CS_SUCCESS; | |
505 | } /* pcmcia_release_configuration */ | |
506 | EXPORT_SYMBOL(pcmcia_release_configuration); | |
507 | ||
508 | ||
509 | /** pcmcia_release_io | |
510 | * | |
511 | * Release_io() releases the I/O ranges allocated by a client. This | |
512 | * may be invoked some time after a card ejection has already dumped | |
513 | * the actual socket configuration, so if the client is "stale", we | |
514 | * don't bother checking the port ranges against the current socket | |
515 | * values. | |
516 | */ | |
517 | int pcmcia_release_io(client_handle_t handle, io_req_t *req) | |
518 | { | |
519 | struct pcmcia_socket *s; | |
520 | ||
521 | if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IO_REQ)) | |
522 | return CS_BAD_HANDLE; | |
523 | handle->state &= ~CLIENT_IO_REQ; | |
524 | s = SOCKET(handle); | |
525 | ||
526 | #ifdef CONFIG_CARDBUS | |
527 | if (handle->state & CLIENT_CARDBUS) | |
528 | return CS_SUCCESS; | |
529 | #endif | |
530 | ||
531 | if (!(handle->state & CLIENT_STALE)) { | |
532 | config_t *c = CONFIG(handle); | |
533 | if (c->state & CONFIG_LOCKED) | |
534 | return CS_CONFIGURATION_LOCKED; | |
535 | if ((c->io.BasePort1 != req->BasePort1) || | |
536 | (c->io.NumPorts1 != req->NumPorts1) || | |
537 | (c->io.BasePort2 != req->BasePort2) || | |
538 | (c->io.NumPorts2 != req->NumPorts2)) | |
539 | return CS_BAD_ARGS; | |
540 | c->state &= ~CONFIG_IO_REQ; | |
541 | } | |
542 | ||
543 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
544 | if (req->NumPorts2) | |
545 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
546 | ||
547 | return CS_SUCCESS; | |
548 | } /* pcmcia_release_io */ | |
549 | EXPORT_SYMBOL(pcmcia_release_io); | |
550 | ||
551 | ||
552 | int pcmcia_release_irq(client_handle_t handle, irq_req_t *req) | |
553 | { | |
554 | struct pcmcia_socket *s; | |
555 | if (CHECK_HANDLE(handle) || !(handle->state & CLIENT_IRQ_REQ)) | |
556 | return CS_BAD_HANDLE; | |
557 | handle->state &= ~CLIENT_IRQ_REQ; | |
558 | s = SOCKET(handle); | |
559 | ||
560 | if (!(handle->state & CLIENT_STALE)) { | |
561 | config_t *c = CONFIG(handle); | |
562 | if (c->state & CONFIG_LOCKED) | |
563 | return CS_CONFIGURATION_LOCKED; | |
564 | if (c->irq.Attributes != req->Attributes) | |
565 | return CS_BAD_ATTRIBUTE; | |
566 | if (s->irq.AssignedIRQ != req->AssignedIRQ) | |
567 | return CS_BAD_IRQ; | |
568 | if (--s->irq.Config == 0) { | |
569 | c->state &= ~CONFIG_IRQ_REQ; | |
570 | s->irq.AssignedIRQ = 0; | |
571 | } | |
572 | } | |
573 | ||
574 | if (req->Attributes & IRQ_HANDLE_PRESENT) { | |
575 | free_irq(req->AssignedIRQ, req->Instance); | |
576 | } | |
577 | ||
578 | #ifdef CONFIG_PCMCIA_PROBE | |
579 | pcmcia_used_irq[req->AssignedIRQ]--; | |
580 | #endif | |
581 | ||
582 | return CS_SUCCESS; | |
583 | } /* pcmcia_release_irq */ | |
584 | EXPORT_SYMBOL(pcmcia_release_irq); | |
585 | ||
586 | ||
587 | int pcmcia_release_window(window_handle_t win) | |
588 | { | |
589 | struct pcmcia_socket *s; | |
590 | ||
591 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
592 | return CS_BAD_HANDLE; | |
593 | s = win->sock; | |
594 | if (!(win->handle->state & CLIENT_WIN_REQ(win->index))) | |
595 | return CS_BAD_HANDLE; | |
596 | ||
597 | /* Shut down memory window */ | |
598 | win->ctl.flags &= ~MAP_ACTIVE; | |
599 | s->ops->set_mem_map(s, &win->ctl); | |
600 | s->state &= ~SOCKET_WIN_REQ(win->index); | |
601 | ||
602 | /* Release system memory */ | |
603 | if (win->ctl.res) { | |
604 | release_resource(win->ctl.res); | |
605 | kfree(win->ctl.res); | |
606 | win->ctl.res = NULL; | |
607 | } | |
608 | win->handle->state &= ~CLIENT_WIN_REQ(win->index); | |
609 | ||
610 | win->magic = 0; | |
611 | ||
612 | return CS_SUCCESS; | |
613 | } /* pcmcia_release_window */ | |
614 | EXPORT_SYMBOL(pcmcia_release_window); | |
615 | ||
616 | ||
617 | int pcmcia_request_configuration(client_handle_t handle, | |
618 | config_req_t *req) | |
619 | { | |
620 | int i; | |
621 | u_int base; | |
622 | struct pcmcia_socket *s; | |
623 | config_t *c; | |
624 | pccard_io_map iomap; | |
625 | ||
626 | if (CHECK_HANDLE(handle)) | |
627 | return CS_BAD_HANDLE; | |
628 | s = SOCKET(handle); | |
629 | if (!(s->state & SOCKET_PRESENT)) | |
630 | return CS_NO_CARD; | |
631 | ||
632 | #ifdef CONFIG_CARDBUS | |
633 | if (handle->state & CLIENT_CARDBUS) | |
634 | return CS_UNSUPPORTED_MODE; | |
635 | #endif | |
636 | ||
637 | if (req->IntType & INT_CARDBUS) | |
638 | return CS_UNSUPPORTED_MODE; | |
639 | c = CONFIG(handle); | |
640 | if (c->state & CONFIG_LOCKED) | |
641 | return CS_CONFIGURATION_LOCKED; | |
642 | ||
643 | /* Do power control. We don't allow changes in Vcc. */ | |
644 | if (s->socket.Vcc != req->Vcc) | |
645 | return CS_BAD_VCC; | |
646 | if (req->Vpp1 != req->Vpp2) | |
647 | return CS_BAD_VPP; | |
648 | s->socket.Vpp = req->Vpp1; | |
649 | if (s->ops->set_socket(s, &s->socket)) | |
650 | return CS_BAD_VPP; | |
651 | ||
652 | c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1; | |
653 | ||
654 | /* Pick memory or I/O card, DMA mode, interrupt */ | |
655 | c->IntType = req->IntType; | |
656 | c->Attributes = req->Attributes; | |
657 | if (req->IntType & INT_MEMORY_AND_IO) | |
658 | s->socket.flags |= SS_IOCARD; | |
659 | if (req->IntType & INT_ZOOMED_VIDEO) | |
660 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
661 | if (req->Attributes & CONF_ENABLE_DMA) | |
662 | s->socket.flags |= SS_DMA_MODE; | |
663 | if (req->Attributes & CONF_ENABLE_SPKR) | |
664 | s->socket.flags |= SS_SPKR_ENA; | |
665 | if (req->Attributes & CONF_ENABLE_IRQ) | |
666 | s->socket.io_irq = s->irq.AssignedIRQ; | |
667 | else | |
668 | s->socket.io_irq = 0; | |
669 | s->ops->set_socket(s, &s->socket); | |
670 | s->lock_count++; | |
671 | ||
672 | /* Set up CIS configuration registers */ | |
673 | base = c->ConfigBase = req->ConfigBase; | |
674 | c->Present = c->CardValues = req->Present; | |
675 | if (req->Present & PRESENT_COPY) { | |
676 | c->Copy = req->Copy; | |
677 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
678 | } | |
679 | if (req->Present & PRESENT_OPTION) { | |
680 | if (s->functions == 1) { | |
681 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
682 | } else { | |
683 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
684 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
685 | if (req->Present & PRESENT_IOBASE_0) | |
686 | c->Option |= COR_ADDR_DECODE; | |
687 | } | |
688 | if (c->state & CONFIG_IRQ_REQ) | |
689 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
690 | c->Option |= COR_LEVEL_REQ; | |
691 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
692 | mdelay(40); | |
693 | } | |
694 | if (req->Present & PRESENT_STATUS) { | |
695 | c->Status = req->Status; | |
696 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
697 | } | |
698 | if (req->Present & PRESENT_PIN_REPLACE) { | |
699 | c->Pin = req->Pin; | |
700 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
701 | } | |
702 | if (req->Present & PRESENT_EXT_STATUS) { | |
703 | c->ExtStatus = req->ExtStatus; | |
704 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
705 | } | |
706 | if (req->Present & PRESENT_IOBASE_0) { | |
707 | u_char b = c->io.BasePort1 & 0xff; | |
708 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
709 | b = (c->io.BasePort1 >> 8) & 0xff; | |
710 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
711 | } | |
712 | if (req->Present & PRESENT_IOSIZE) { | |
713 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
714 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
715 | } | |
716 | ||
717 | /* Configure I/O windows */ | |
718 | if (c->state & CONFIG_IO_REQ) { | |
719 | iomap.speed = io_speed; | |
720 | for (i = 0; i < MAX_IO_WIN; i++) | |
721 | if (s->io[i].NumPorts != 0) { | |
722 | iomap.map = i; | |
723 | iomap.flags = MAP_ACTIVE; | |
724 | switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) { | |
725 | case IO_DATA_PATH_WIDTH_16: | |
726 | iomap.flags |= MAP_16BIT; break; | |
727 | case IO_DATA_PATH_WIDTH_AUTO: | |
728 | iomap.flags |= MAP_AUTOSZ; break; | |
729 | default: | |
730 | break; | |
731 | } | |
732 | iomap.start = s->io[i].BasePort; | |
733 | iomap.stop = iomap.start + s->io[i].NumPorts - 1; | |
734 | s->ops->set_io_map(s, &iomap); | |
735 | s->io[i].Config++; | |
736 | } | |
737 | } | |
738 | ||
739 | c->state |= CONFIG_LOCKED; | |
740 | handle->state |= CLIENT_CONFIG_LOCKED; | |
741 | return CS_SUCCESS; | |
742 | } /* pcmcia_request_configuration */ | |
743 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
744 | ||
745 | ||
746 | /** pcmcia_request_io | |
747 | * | |
748 | * Request_io() reserves ranges of port addresses for a socket. | |
749 | * I have not implemented range sharing or alias addressing. | |
750 | */ | |
751 | int pcmcia_request_io(client_handle_t handle, io_req_t *req) | |
752 | { | |
753 | struct pcmcia_socket *s; | |
754 | config_t *c; | |
755 | ||
756 | if (CHECK_HANDLE(handle)) | |
757 | return CS_BAD_HANDLE; | |
758 | s = SOCKET(handle); | |
759 | if (!(s->state & SOCKET_PRESENT)) | |
760 | return CS_NO_CARD; | |
761 | ||
762 | if (handle->state & CLIENT_CARDBUS) { | |
763 | #ifdef CONFIG_CARDBUS | |
764 | handle->state |= CLIENT_IO_REQ; | |
765 | return CS_SUCCESS; | |
766 | #else | |
767 | return CS_UNSUPPORTED_FUNCTION; | |
768 | #endif | |
769 | } | |
770 | ||
771 | if (!req) | |
772 | return CS_UNSUPPORTED_MODE; | |
773 | c = CONFIG(handle); | |
774 | if (c->state & CONFIG_LOCKED) | |
775 | return CS_CONFIGURATION_LOCKED; | |
776 | if (c->state & CONFIG_IO_REQ) | |
777 | return CS_IN_USE; | |
778 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) | |
779 | return CS_BAD_ATTRIBUTE; | |
780 | if ((req->NumPorts2 > 0) && | |
781 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) | |
782 | return CS_BAD_ATTRIBUTE; | |
783 | ||
784 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, | |
785 | req->NumPorts1, req->IOAddrLines)) | |
786 | return CS_IN_USE; | |
787 | ||
788 | if (req->NumPorts2) { | |
789 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, | |
790 | req->NumPorts2, req->IOAddrLines)) { | |
791 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
792 | return CS_IN_USE; | |
793 | } | |
794 | } | |
795 | ||
796 | c->io = *req; | |
797 | c->state |= CONFIG_IO_REQ; | |
798 | handle->state |= CLIENT_IO_REQ; | |
799 | return CS_SUCCESS; | |
800 | } /* pcmcia_request_io */ | |
801 | EXPORT_SYMBOL(pcmcia_request_io); | |
802 | ||
803 | ||
804 | /** pcmcia_request_irq | |
805 | * | |
806 | * Request_irq() reserves an irq for this client. | |
807 | * | |
808 | * Also, since Linux only reserves irq's when they are actually | |
809 | * hooked, we don't guarantee that an irq will still be available | |
810 | * when the configuration is locked. Now that I think about it, | |
811 | * there might be a way to fix this using a dummy handler. | |
812 | */ | |
813 | ||
814 | #ifdef CONFIG_PCMCIA_PROBE | |
815 | static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs) | |
816 | { | |
817 | return IRQ_NONE; | |
818 | } | |
819 | #endif | |
820 | ||
821 | int pcmcia_request_irq(client_handle_t handle, irq_req_t *req) | |
822 | { | |
823 | struct pcmcia_socket *s; | |
824 | config_t *c; | |
825 | int ret = CS_IN_USE, irq = 0; | |
826 | struct pcmcia_device *p_dev = handle_to_pdev(handle); | |
827 | ||
828 | if (CHECK_HANDLE(handle)) | |
829 | return CS_BAD_HANDLE; | |
830 | s = SOCKET(handle); | |
831 | if (!(s->state & SOCKET_PRESENT)) | |
832 | return CS_NO_CARD; | |
833 | c = CONFIG(handle); | |
834 | if (c->state & CONFIG_LOCKED) | |
835 | return CS_CONFIGURATION_LOCKED; | |
836 | if (c->state & CONFIG_IRQ_REQ) | |
837 | return CS_IN_USE; | |
838 | ||
839 | #ifdef CONFIG_PCMCIA_PROBE | |
840 | if (s->irq.AssignedIRQ != 0) { | |
841 | /* If the interrupt is already assigned, it must be the same */ | |
842 | irq = s->irq.AssignedIRQ; | |
843 | } else { | |
844 | int try; | |
845 | u32 mask = s->irq_mask; | |
846 | void *data = NULL; | |
847 | ||
848 | for (try = 0; try < 64; try++) { | |
849 | irq = try % 32; | |
850 | ||
851 | /* marked as available by driver, and not blocked by userspace? */ | |
852 | if (!((mask >> irq) & 1)) | |
853 | continue; | |
854 | ||
855 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
856 | if ((try < 32) && pcmcia_used_irq[irq]) | |
857 | continue; | |
858 | ||
859 | /* register the correct driver, if possible, of check whether | |
860 | * registering a dummy handle works, i.e. if the IRQ isn't | |
861 | * marked as used by the kernel resource management core */ | |
862 | ret = request_irq(irq, | |
863 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, | |
864 | ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) || | |
865 | (s->functions > 1) || | |
866 | (irq == s->pci_irq)) ? SA_SHIRQ : 0, | |
867 | p_dev->dev.bus_id, | |
868 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); | |
869 | if (!ret) { | |
870 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
871 | free_irq(irq, data); | |
872 | break; | |
873 | } | |
874 | } | |
875 | } | |
876 | #endif | |
877 | if (ret) { | |
878 | if (!s->pci_irq) | |
879 | return ret; | |
880 | irq = s->pci_irq; | |
881 | } | |
882 | ||
883 | if (ret && req->Attributes & IRQ_HANDLE_PRESENT) { | |
884 | if (request_irq(irq, req->Handler, | |
885 | ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) || | |
886 | (s->functions > 1) || | |
887 | (irq == s->pci_irq)) ? SA_SHIRQ : 0, | |
888 | p_dev->dev.bus_id, req->Instance)) | |
889 | return CS_IN_USE; | |
890 | } | |
891 | ||
892 | c->irq.Attributes = req->Attributes; | |
893 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
894 | s->irq.Config++; | |
895 | ||
896 | c->state |= CONFIG_IRQ_REQ; | |
897 | handle->state |= CLIENT_IRQ_REQ; | |
898 | ||
899 | #ifdef CONFIG_PCMCIA_PROBE | |
900 | pcmcia_used_irq[irq]++; | |
901 | #endif | |
902 | ||
903 | return CS_SUCCESS; | |
904 | } /* pcmcia_request_irq */ | |
905 | EXPORT_SYMBOL(pcmcia_request_irq); | |
906 | ||
907 | ||
908 | /** pcmcia_request_window | |
909 | * | |
910 | * Request_window() establishes a mapping between card memory space | |
911 | * and system memory space. | |
912 | */ | |
913 | int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh) | |
914 | { | |
915 | struct pcmcia_socket *s; | |
916 | window_t *win; | |
917 | u_long align; | |
918 | int w; | |
919 | ||
920 | if (CHECK_HANDLE(*handle)) | |
921 | return CS_BAD_HANDLE; | |
922 | s = (*handle)->Socket; | |
923 | if (!(s->state & SOCKET_PRESENT)) | |
924 | return CS_NO_CARD; | |
925 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) | |
926 | return CS_BAD_ATTRIBUTE; | |
927 | ||
928 | /* Window size defaults to smallest available */ | |
929 | if (req->Size == 0) | |
930 | req->Size = s->map_size; | |
931 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
932 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
933 | req->Size : s->map_size); | |
934 | if (req->Size & (s->map_size-1)) | |
935 | return CS_BAD_SIZE; | |
936 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || | |
937 | (req->Base & (align-1))) | |
938 | return CS_BAD_BASE; | |
939 | if (req->Base) | |
940 | align = 0; | |
941 | ||
942 | /* Allocate system memory window */ | |
943 | for (w = 0; w < MAX_WIN; w++) | |
944 | if (!(s->state & SOCKET_WIN_REQ(w))) break; | |
945 | if (w == MAX_WIN) | |
946 | return CS_OUT_OF_RESOURCE; | |
947 | ||
948 | win = &s->win[w]; | |
949 | win->magic = WINDOW_MAGIC; | |
950 | win->index = w; | |
951 | win->handle = *handle; | |
952 | win->sock = s; | |
953 | ||
954 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
955 | win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align, | |
956 | (req->Attributes & WIN_MAP_BELOW_1MB), s); | |
957 | if (!win->ctl.res) | |
958 | return CS_IN_USE; | |
959 | } | |
960 | (*handle)->state |= CLIENT_WIN_REQ(w); | |
961 | ||
962 | /* Configure the socket controller */ | |
963 | win->ctl.map = w+1; | |
964 | win->ctl.flags = 0; | |
965 | win->ctl.speed = req->AccessSpeed; | |
966 | if (req->Attributes & WIN_MEMORY_TYPE) | |
967 | win->ctl.flags |= MAP_ATTRIB; | |
968 | if (req->Attributes & WIN_ENABLE) | |
969 | win->ctl.flags |= MAP_ACTIVE; | |
970 | if (req->Attributes & WIN_DATA_WIDTH_16) | |
971 | win->ctl.flags |= MAP_16BIT; | |
972 | if (req->Attributes & WIN_USE_WAIT) | |
973 | win->ctl.flags |= MAP_USE_WAIT; | |
974 | win->ctl.card_start = 0; | |
975 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
976 | return CS_BAD_ARGS; | |
977 | s->state |= SOCKET_WIN_REQ(w); | |
978 | ||
979 | /* Return window handle */ | |
980 | if (s->features & SS_CAP_STATIC_MAP) { | |
981 | req->Base = win->ctl.static_start; | |
982 | } else { | |
983 | req->Base = win->ctl.res->start; | |
984 | } | |
985 | *wh = win; | |
986 | ||
987 | return CS_SUCCESS; | |
988 | } /* pcmcia_request_window */ | |
989 | EXPORT_SYMBOL(pcmcia_request_window); |