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1a8d4663 DB |
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 | ||
1a8d4663 DB |
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); | |
57b6281c | 92 | s->io[0].Attributes = attr; |
1a8d4663 DB |
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 */ | |
3448139b DB |
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 | ||
1a8d4663 DB |
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 */ | |
1a8d4663 | 273 | |
3448139b DB |
274 | int pcmcia_get_configuration_info(client_handle_t handle, |
275 | config_info_t *config) | |
1a8d4663 | 276 | { |
3448139b DB |
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); | |
1a8d4663 DB |
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, ®); | |
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, ®); | |
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 */ | |
3448139b DB |
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 | ||
1a8d4663 DB |
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); |