Commit | Line | Data |
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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 | ||
1a8d4663 DB |
17 | #include <linux/module.h> |
18 | #include <linux/kernel.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/device.h> | |
23 | ||
1a8d4663 DB |
24 | #include <pcmcia/cs_types.h> |
25 | #include <pcmcia/ss.h> | |
26 | #include <pcmcia/cs.h> | |
1a8d4663 DB |
27 | #include <pcmcia/cistpl.h> |
28 | #include <pcmcia/cisreg.h> | |
29 | #include <pcmcia/ds.h> | |
30 | ||
31 | #include "cs_internal.h" | |
32 | #include "ds_internal.h" | |
33 | ||
34 | ||
1a8d4663 DB |
35 | /* Access speed for IO windows */ |
36 | static int io_speed = 0; | |
37 | module_param(io_speed, int, 0444); | |
38 | ||
39 | ||
40 | #ifdef CONFIG_PCMCIA_PROBE | |
531e5ca6 | 41 | #include <asm/irq.h> |
1a8d4663 DB |
42 | /* mask of IRQs already reserved by other cards, we should avoid using them */ |
43 | static u8 pcmcia_used_irq[NR_IRQS]; | |
44 | #endif | |
45 | ||
46 | ||
7d16b658 | 47 | #ifdef CONFIG_PCMCIA_DEBUG |
1a8d4663 | 48 | extern int ds_pc_debug; |
1a8d4663 DB |
49 | |
50 | #define ds_dbg(skt, lvl, fmt, arg...) do { \ | |
51 | if (ds_pc_debug >= lvl) \ | |
ac449d6e DB |
52 | dev_printk(KERN_DEBUG, &skt->dev, \ |
53 | "pcmcia_resource: " fmt, \ | |
54 | ## arg); \ | |
1a8d4663 DB |
55 | } while (0) |
56 | #else | |
ac449d6e | 57 | #define ds_dbg(skt, lvl, fmt, arg...) do { } while (0) |
1a8d4663 DB |
58 | #endif |
59 | ||
60 | ||
61 | ||
62 | /** alloc_io_space | |
63 | * | |
64 | * Special stuff for managing IO windows, because they are scarce | |
65 | */ | |
66 | ||
ecb8a847 OJ |
67 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, |
68 | unsigned int *base, unsigned int num, u_int lines) | |
1a8d4663 DB |
69 | { |
70 | int i; | |
ecb8a847 | 71 | unsigned int try, align; |
1a8d4663 DB |
72 | |
73 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
74 | if (align && (align < num)) { | |
75 | if (*base) { | |
ecb8a847 | 76 | ds_dbg(s, 0, "odd IO request: num %#x align %#x\n", |
1a8d4663 DB |
77 | num, align); |
78 | align = 0; | |
79 | } else | |
80 | while (align && (align < num)) align <<= 1; | |
81 | } | |
82 | if (*base & ~(align-1)) { | |
ecb8a847 | 83 | ds_dbg(s, 0, "odd IO request: base %#x align %#x\n", |
1a8d4663 DB |
84 | *base, align); |
85 | align = 0; | |
86 | } | |
87 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
88 | *base = s->io_offset | (*base & 0x0fff); | |
89 | return 0; | |
90 | } | |
91 | /* Check for an already-allocated window that must conflict with | |
92 | * what was asked for. It is a hack because it does not catch all | |
93 | * potential conflicts, just the most obvious ones. | |
94 | */ | |
95 | for (i = 0; i < MAX_IO_WIN; i++) | |
4708b5fa | 96 | if ((s->io[i].res) && *base && |
c7d00693 | 97 | ((s->io[i].res->start & (align-1)) == *base)) |
1a8d4663 DB |
98 | return 1; |
99 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 100 | if (!s->io[i].res) { |
1a8d4663 DB |
101 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); |
102 | if (s->io[i].res) { | |
c7d00693 DB |
103 | *base = s->io[i].res->start; |
104 | s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); | |
105 | s->io[i].InUse = num; | |
1a8d4663 DB |
106 | break; |
107 | } else | |
108 | return 1; | |
c7d00693 | 109 | } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) |
1a8d4663 DB |
110 | continue; |
111 | /* Try to extend top of window */ | |
c7d00693 | 112 | try = s->io[i].res->end + 1; |
1a8d4663 DB |
113 | if ((*base == 0) || (*base == try)) |
114 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
115 | s->io[i].res->end + num, s) == 0) { | |
116 | *base = try; | |
1a8d4663 DB |
117 | s->io[i].InUse += num; |
118 | break; | |
119 | } | |
120 | /* Try to extend bottom of window */ | |
c7d00693 | 121 | try = s->io[i].res->start - num; |
1a8d4663 DB |
122 | if ((*base == 0) || (*base == try)) |
123 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
124 | s->io[i].res->end, s) == 0) { | |
c7d00693 | 125 | *base = try; |
1a8d4663 DB |
126 | s->io[i].InUse += num; |
127 | break; | |
128 | } | |
129 | } | |
130 | return (i == MAX_IO_WIN); | |
131 | } /* alloc_io_space */ | |
132 | ||
133 | ||
ecb8a847 OJ |
134 | static void release_io_space(struct pcmcia_socket *s, unsigned int base, |
135 | unsigned int num) | |
1a8d4663 DB |
136 | { |
137 | int i; | |
138 | ||
139 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 DB |
140 | if (!s->io[i].res) |
141 | continue; | |
142 | if ((s->io[i].res->start <= base) && | |
143 | (s->io[i].res->end >= base+num-1)) { | |
1a8d4663 DB |
144 | s->io[i].InUse -= num; |
145 | /* Free the window if no one else is using it */ | |
146 | if (s->io[i].InUse == 0) { | |
1a8d4663 DB |
147 | release_resource(s->io[i].res); |
148 | kfree(s->io[i].res); | |
149 | s->io[i].res = NULL; | |
150 | } | |
151 | } | |
152 | } | |
153 | } /* release_io_space */ | |
154 | ||
155 | ||
156 | /** pccard_access_configuration_register | |
157 | * | |
158 | * Access_configuration_register() reads and writes configuration | |
159 | * registers in attribute memory. Memory window 0 is reserved for | |
160 | * this and the tuple reading services. | |
161 | */ | |
162 | ||
855cdf13 | 163 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
1a8d4663 DB |
164 | conf_reg_t *reg) |
165 | { | |
855cdf13 | 166 | struct pcmcia_socket *s; |
1a8d4663 DB |
167 | config_t *c; |
168 | int addr; | |
169 | u_char val; | |
170 | ||
855cdf13 | 171 | if (!p_dev || !p_dev->function_config) |
1a8d4663 DB |
172 | return CS_NO_CARD; |
173 | ||
855cdf13 DB |
174 | s = p_dev->socket; |
175 | c = p_dev->function_config; | |
1a8d4663 DB |
176 | |
177 | if (!(c->state & CONFIG_LOCKED)) | |
178 | return CS_CONFIGURATION_LOCKED; | |
179 | ||
180 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
181 | ||
182 | switch (reg->Action) { | |
183 | case CS_READ: | |
184 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
185 | reg->Value = val; | |
186 | break; | |
187 | case CS_WRITE: | |
188 | val = reg->Value; | |
189 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
190 | break; | |
191 | default: | |
192 | return CS_BAD_ARGS; | |
193 | break; | |
194 | } | |
4c89e88b | 195 | return 0; |
855cdf13 | 196 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
197 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
198 | ||
1a8d4663 | 199 | |
1a8d4663 DB |
200 | /** pcmcia_get_window |
201 | */ | |
202 | int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, | |
203 | int idx, win_req_t *req) | |
204 | { | |
205 | window_t *win; | |
206 | int w; | |
207 | ||
208 | if (!s || !(s->state & SOCKET_PRESENT)) | |
209 | return CS_NO_CARD; | |
210 | for (w = idx; w < MAX_WIN; w++) | |
211 | if (s->state & SOCKET_WIN_REQ(w)) | |
212 | break; | |
213 | if (w == MAX_WIN) | |
214 | return CS_NO_MORE_ITEMS; | |
215 | win = &s->win[w]; | |
216 | req->Base = win->ctl.res->start; | |
217 | req->Size = win->ctl.res->end - win->ctl.res->start + 1; | |
218 | req->AccessSpeed = win->ctl.speed; | |
219 | req->Attributes = 0; | |
220 | if (win->ctl.flags & MAP_ATTRIB) | |
221 | req->Attributes |= WIN_MEMORY_TYPE_AM; | |
222 | if (win->ctl.flags & MAP_ACTIVE) | |
223 | req->Attributes |= WIN_ENABLE; | |
224 | if (win->ctl.flags & MAP_16BIT) | |
225 | req->Attributes |= WIN_DATA_WIDTH_16; | |
226 | if (win->ctl.flags & MAP_USE_WAIT) | |
227 | req->Attributes |= WIN_USE_WAIT; | |
228 | *handle = win; | |
4c89e88b | 229 | return 0; |
1a8d4663 DB |
230 | } /* pcmcia_get_window */ |
231 | EXPORT_SYMBOL(pcmcia_get_window); | |
232 | ||
233 | ||
1a8d4663 DB |
234 | /** pcmcia_get_mem_page |
235 | * | |
236 | * Change the card address of an already open memory window. | |
237 | */ | |
238 | int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) | |
239 | { | |
240 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
241 | return CS_BAD_HANDLE; | |
242 | req->Page = 0; | |
243 | req->CardOffset = win->ctl.card_start; | |
4c89e88b | 244 | return 0; |
1a8d4663 DB |
245 | } /* pcmcia_get_mem_page */ |
246 | EXPORT_SYMBOL(pcmcia_get_mem_page); | |
247 | ||
248 | ||
249 | int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) | |
250 | { | |
251 | struct pcmcia_socket *s; | |
252 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
253 | return CS_BAD_HANDLE; | |
254 | if (req->Page != 0) | |
255 | return CS_BAD_PAGE; | |
256 | s = win->sock; | |
257 | win->ctl.card_start = req->CardOffset; | |
258 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
259 | return CS_BAD_OFFSET; | |
4c89e88b | 260 | return 0; |
1a8d4663 DB |
261 | } /* pcmcia_map_mem_page */ |
262 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
263 | ||
264 | ||
265 | /** pcmcia_modify_configuration | |
266 | * | |
267 | * Modify a locked socket configuration | |
268 | */ | |
2bc5a9bd | 269 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
270 | modconf_t *mod) |
271 | { | |
272 | struct pcmcia_socket *s; | |
273 | config_t *c; | |
274 | ||
2bc5a9bd | 275 | s = p_dev->socket; |
dbb22f0d DB |
276 | c = p_dev->function_config; |
277 | ||
1a8d4663 DB |
278 | if (!(s->state & SOCKET_PRESENT)) |
279 | return CS_NO_CARD; | |
280 | if (!(c->state & CONFIG_LOCKED)) | |
281 | return CS_CONFIGURATION_LOCKED; | |
282 | ||
283 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
284 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
285 | c->Attributes |= CONF_ENABLE_IRQ; | |
286 | s->socket.io_irq = s->irq.AssignedIRQ; | |
287 | } else { | |
288 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
289 | s->socket.io_irq = 0; | |
290 | } | |
291 | s->ops->set_socket(s, &s->socket); | |
292 | } | |
293 | ||
294 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) | |
295 | return CS_BAD_VCC; | |
296 | ||
297 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
298 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
299 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
300 | if (mod->Vpp1 != mod->Vpp2) | |
301 | return CS_BAD_VPP; | |
71ed90d8 | 302 | s->socket.Vpp = mod->Vpp1; |
1a8d4663 DB |
303 | if (s->ops->set_socket(s, &s->socket)) |
304 | return CS_BAD_VPP; | |
305 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || | |
306 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) | |
307 | return CS_BAD_VPP; | |
308 | ||
4bbed523 DB |
309 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
310 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
311 | pccard_io_map io_on; | |
312 | int i; | |
313 | ||
314 | io_on.speed = io_speed; | |
315 | for (i = 0; i < MAX_IO_WIN; i++) { | |
316 | if (!s->io[i].res) | |
317 | continue; | |
318 | io_off.map = i; | |
319 | io_on.map = i; | |
320 | ||
321 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
322 | io_on.start = s->io[i].res->start; | |
323 | io_on.stop = s->io[i].res->end; | |
324 | ||
325 | s->ops->set_io_map(s, &io_off); | |
326 | mdelay(40); | |
327 | s->ops->set_io_map(s, &io_on); | |
328 | } | |
329 | } | |
330 | ||
4c89e88b | 331 | return 0; |
1a8d4663 DB |
332 | } /* modify_configuration */ |
333 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
334 | ||
335 | ||
2bc5a9bd | 336 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
337 | { |
338 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 339 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 340 | config_t *c = p_dev->function_config; |
1a8d4663 DB |
341 | int i; |
342 | ||
e2d40963 DB |
343 | if (p_dev->_locked) { |
344 | p_dev->_locked = 0; | |
1a8d4663 DB |
345 | if (--(s->lock_count) == 0) { |
346 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
347 | s->socket.Vpp = 0; | |
348 | s->socket.io_irq = 0; | |
349 | s->ops->set_socket(s, &s->socket); | |
350 | } | |
5f2a71fc DB |
351 | } |
352 | if (c->state & CONFIG_LOCKED) { | |
353 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
354 | if (c->state & CONFIG_IO_REQ) |
355 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 356 | if (!s->io[i].res) |
1a8d4663 DB |
357 | continue; |
358 | s->io[i].Config--; | |
359 | if (s->io[i].Config != 0) | |
360 | continue; | |
361 | io.map = i; | |
362 | s->ops->set_io_map(s, &io); | |
363 | } | |
1a8d4663 DB |
364 | } |
365 | ||
4c89e88b | 366 | return 0; |
1a8d4663 | 367 | } /* pcmcia_release_configuration */ |
1a8d4663 DB |
368 | |
369 | ||
370 | /** pcmcia_release_io | |
371 | * | |
372 | * Release_io() releases the I/O ranges allocated by a client. This | |
373 | * may be invoked some time after a card ejection has already dumped | |
374 | * the actual socket configuration, so if the client is "stale", we | |
375 | * don't bother checking the port ranges against the current socket | |
376 | * values. | |
377 | */ | |
b4c88400 | 378 | static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 379 | { |
2bc5a9bd | 380 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 381 | config_t *c = p_dev->function_config; |
1a8d4663 | 382 | |
e2d40963 | 383 | if (!p_dev->_io ) |
1a8d4663 | 384 | return CS_BAD_HANDLE; |
5f2a71fc | 385 | |
e2d40963 | 386 | p_dev->_io = 0; |
1a8d4663 | 387 | |
5f2a71fc DB |
388 | if ((c->io.BasePort1 != req->BasePort1) || |
389 | (c->io.NumPorts1 != req->NumPorts1) || | |
390 | (c->io.BasePort2 != req->BasePort2) || | |
391 | (c->io.NumPorts2 != req->NumPorts2)) | |
392 | return CS_BAD_ARGS; | |
393 | ||
394 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 DB |
395 | |
396 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
397 | if (req->NumPorts2) | |
398 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
399 | ||
4c89e88b | 400 | return 0; |
1a8d4663 | 401 | } /* pcmcia_release_io */ |
1a8d4663 DB |
402 | |
403 | ||
b4c88400 | 404 | static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 405 | { |
2bc5a9bd | 406 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc DB |
407 | config_t *c= p_dev->function_config; |
408 | ||
e2d40963 | 409 | if (!p_dev->_irq) |
1a8d4663 | 410 | return CS_BAD_HANDLE; |
e2d40963 | 411 | p_dev->_irq = 0; |
1a8d4663 | 412 | |
5f2a71fc DB |
413 | if (c->state & CONFIG_LOCKED) |
414 | return CS_CONFIGURATION_LOCKED; | |
415 | if (c->irq.Attributes != req->Attributes) | |
416 | return CS_BAD_ATTRIBUTE; | |
417 | if (s->irq.AssignedIRQ != req->AssignedIRQ) | |
418 | return CS_BAD_IRQ; | |
419 | if (--s->irq.Config == 0) { | |
420 | c->state &= ~CONFIG_IRQ_REQ; | |
421 | s->irq.AssignedIRQ = 0; | |
1a8d4663 DB |
422 | } |
423 | ||
424 | if (req->Attributes & IRQ_HANDLE_PRESENT) { | |
425 | free_irq(req->AssignedIRQ, req->Instance); | |
426 | } | |
427 | ||
428 | #ifdef CONFIG_PCMCIA_PROBE | |
429 | pcmcia_used_irq[req->AssignedIRQ]--; | |
430 | #endif | |
431 | ||
4c89e88b | 432 | return 0; |
1a8d4663 | 433 | } /* pcmcia_release_irq */ |
1a8d4663 DB |
434 | |
435 | ||
436 | int pcmcia_release_window(window_handle_t win) | |
437 | { | |
438 | struct pcmcia_socket *s; | |
439 | ||
440 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
441 | return CS_BAD_HANDLE; | |
442 | s = win->sock; | |
e2d40963 | 443 | if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) |
1a8d4663 DB |
444 | return CS_BAD_HANDLE; |
445 | ||
446 | /* Shut down memory window */ | |
447 | win->ctl.flags &= ~MAP_ACTIVE; | |
448 | s->ops->set_mem_map(s, &win->ctl); | |
449 | s->state &= ~SOCKET_WIN_REQ(win->index); | |
450 | ||
451 | /* Release system memory */ | |
452 | if (win->ctl.res) { | |
453 | release_resource(win->ctl.res); | |
454 | kfree(win->ctl.res); | |
455 | win->ctl.res = NULL; | |
456 | } | |
e2d40963 | 457 | win->handle->_win &= ~CLIENT_WIN_REQ(win->index); |
1a8d4663 DB |
458 | |
459 | win->magic = 0; | |
460 | ||
4c89e88b | 461 | return 0; |
1a8d4663 DB |
462 | } /* pcmcia_release_window */ |
463 | EXPORT_SYMBOL(pcmcia_release_window); | |
464 | ||
465 | ||
2bc5a9bd | 466 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
467 | config_req_t *req) |
468 | { | |
469 | int i; | |
470 | u_int base; | |
2bc5a9bd | 471 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
472 | config_t *c; |
473 | pccard_io_map iomap; | |
474 | ||
1a8d4663 DB |
475 | if (!(s->state & SOCKET_PRESENT)) |
476 | return CS_NO_CARD; | |
477 | ||
1a8d4663 DB |
478 | if (req->IntType & INT_CARDBUS) |
479 | return CS_UNSUPPORTED_MODE; | |
dbb22f0d | 480 | c = p_dev->function_config; |
1a8d4663 DB |
481 | if (c->state & CONFIG_LOCKED) |
482 | return CS_CONFIGURATION_LOCKED; | |
483 | ||
484 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 485 | s->socket.Vpp = req->Vpp; |
1a8d4663 DB |
486 | if (s->ops->set_socket(s, &s->socket)) |
487 | return CS_BAD_VPP; | |
488 | ||
1a8d4663 DB |
489 | /* Pick memory or I/O card, DMA mode, interrupt */ |
490 | c->IntType = req->IntType; | |
491 | c->Attributes = req->Attributes; | |
492 | if (req->IntType & INT_MEMORY_AND_IO) | |
493 | s->socket.flags |= SS_IOCARD; | |
494 | if (req->IntType & INT_ZOOMED_VIDEO) | |
495 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
496 | if (req->Attributes & CONF_ENABLE_DMA) | |
497 | s->socket.flags |= SS_DMA_MODE; | |
498 | if (req->Attributes & CONF_ENABLE_SPKR) | |
499 | s->socket.flags |= SS_SPKR_ENA; | |
500 | if (req->Attributes & CONF_ENABLE_IRQ) | |
501 | s->socket.io_irq = s->irq.AssignedIRQ; | |
502 | else | |
503 | s->socket.io_irq = 0; | |
504 | s->ops->set_socket(s, &s->socket); | |
505 | s->lock_count++; | |
506 | ||
507 | /* Set up CIS configuration registers */ | |
508 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 509 | c->CardValues = req->Present; |
1a8d4663 DB |
510 | if (req->Present & PRESENT_COPY) { |
511 | c->Copy = req->Copy; | |
512 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
513 | } | |
514 | if (req->Present & PRESENT_OPTION) { | |
515 | if (s->functions == 1) { | |
516 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
517 | } else { | |
518 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
519 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
520 | if (req->Present & PRESENT_IOBASE_0) | |
521 | c->Option |= COR_ADDR_DECODE; | |
522 | } | |
523 | if (c->state & CONFIG_IRQ_REQ) | |
524 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
525 | c->Option |= COR_LEVEL_REQ; | |
526 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
527 | mdelay(40); | |
528 | } | |
529 | if (req->Present & PRESENT_STATUS) { | |
530 | c->Status = req->Status; | |
531 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
532 | } | |
533 | if (req->Present & PRESENT_PIN_REPLACE) { | |
534 | c->Pin = req->Pin; | |
535 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
536 | } | |
537 | if (req->Present & PRESENT_EXT_STATUS) { | |
538 | c->ExtStatus = req->ExtStatus; | |
539 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
540 | } | |
541 | if (req->Present & PRESENT_IOBASE_0) { | |
542 | u_char b = c->io.BasePort1 & 0xff; | |
543 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
544 | b = (c->io.BasePort1 >> 8) & 0xff; | |
545 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
546 | } | |
547 | if (req->Present & PRESENT_IOSIZE) { | |
548 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
549 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
550 | } | |
551 | ||
552 | /* Configure I/O windows */ | |
553 | if (c->state & CONFIG_IO_REQ) { | |
554 | iomap.speed = io_speed; | |
555 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 556 | if (s->io[i].res) { |
1a8d4663 DB |
557 | iomap.map = i; |
558 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 559 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
560 | case IO_DATA_PATH_WIDTH_16: |
561 | iomap.flags |= MAP_16BIT; break; | |
562 | case IO_DATA_PATH_WIDTH_AUTO: | |
563 | iomap.flags |= MAP_AUTOSZ; break; | |
564 | default: | |
565 | break; | |
566 | } | |
c7d00693 DB |
567 | iomap.start = s->io[i].res->start; |
568 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
569 | s->ops->set_io_map(s, &iomap); |
570 | s->io[i].Config++; | |
571 | } | |
572 | } | |
573 | ||
574 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 575 | p_dev->_locked = 1; |
4c89e88b | 576 | return 0; |
1a8d4663 DB |
577 | } /* pcmcia_request_configuration */ |
578 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
579 | ||
580 | ||
581 | /** pcmcia_request_io | |
582 | * | |
583 | * Request_io() reserves ranges of port addresses for a socket. | |
584 | * I have not implemented range sharing or alias addressing. | |
585 | */ | |
2bc5a9bd | 586 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 587 | { |
2bc5a9bd | 588 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
589 | config_t *c; |
590 | ||
1a8d4663 DB |
591 | if (!(s->state & SOCKET_PRESENT)) |
592 | return CS_NO_CARD; | |
593 | ||
1a8d4663 DB |
594 | if (!req) |
595 | return CS_UNSUPPORTED_MODE; | |
dbb22f0d | 596 | c = p_dev->function_config; |
1a8d4663 DB |
597 | if (c->state & CONFIG_LOCKED) |
598 | return CS_CONFIGURATION_LOCKED; | |
599 | if (c->state & CONFIG_IO_REQ) | |
600 | return CS_IN_USE; | |
601 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) | |
602 | return CS_BAD_ATTRIBUTE; | |
603 | if ((req->NumPorts2 > 0) && | |
604 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) | |
605 | return CS_BAD_ATTRIBUTE; | |
606 | ||
607 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, | |
608 | req->NumPorts1, req->IOAddrLines)) | |
609 | return CS_IN_USE; | |
610 | ||
611 | if (req->NumPorts2) { | |
612 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, | |
613 | req->NumPorts2, req->IOAddrLines)) { | |
614 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
615 | return CS_IN_USE; | |
616 | } | |
617 | } | |
618 | ||
619 | c->io = *req; | |
620 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 621 | p_dev->_io = 1; |
4c89e88b | 622 | return 0; |
1a8d4663 DB |
623 | } /* pcmcia_request_io */ |
624 | EXPORT_SYMBOL(pcmcia_request_io); | |
625 | ||
626 | ||
627 | /** pcmcia_request_irq | |
628 | * | |
629 | * Request_irq() reserves an irq for this client. | |
630 | * | |
631 | * Also, since Linux only reserves irq's when they are actually | |
632 | * hooked, we don't guarantee that an irq will still be available | |
633 | * when the configuration is locked. Now that I think about it, | |
634 | * there might be a way to fix this using a dummy handler. | |
635 | */ | |
636 | ||
637 | #ifdef CONFIG_PCMCIA_PROBE | |
7d12e780 | 638 | static irqreturn_t test_action(int cpl, void *dev_id) |
1a8d4663 DB |
639 | { |
640 | return IRQ_NONE; | |
641 | } | |
642 | #endif | |
643 | ||
2bc5a9bd | 644 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 645 | { |
2bc5a9bd | 646 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
647 | config_t *c; |
648 | int ret = CS_IN_USE, irq = 0; | |
c533120b | 649 | int type; |
1a8d4663 | 650 | |
1a8d4663 DB |
651 | if (!(s->state & SOCKET_PRESENT)) |
652 | return CS_NO_CARD; | |
dbb22f0d | 653 | c = p_dev->function_config; |
1a8d4663 DB |
654 | if (c->state & CONFIG_LOCKED) |
655 | return CS_CONFIGURATION_LOCKED; | |
656 | if (c->state & CONFIG_IRQ_REQ) | |
657 | return CS_IN_USE; | |
658 | ||
c533120b AC |
659 | /* Decide what type of interrupt we are registering */ |
660 | type = 0; | |
661 | if (s->functions > 1) /* All of this ought to be handled higher up */ | |
dace1453 | 662 | type = IRQF_SHARED; |
c533120b | 663 | if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) |
dace1453 | 664 | type = IRQF_SHARED; |
c533120b | 665 | |
1a8d4663 | 666 | #ifdef CONFIG_PCMCIA_PROBE |
635416ef AC |
667 | |
668 | #ifdef IRQ_NOAUTOEN | |
669 | /* if the underlying IRQ infrastructure allows for it, only allocate | |
670 | * the IRQ, but do not enable it | |
671 | */ | |
672 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
673 | type |= IRQ_NOAUTOEN; | |
674 | #endif /* IRQ_NOAUTOEN */ | |
675 | ||
1a8d4663 DB |
676 | if (s->irq.AssignedIRQ != 0) { |
677 | /* If the interrupt is already assigned, it must be the same */ | |
678 | irq = s->irq.AssignedIRQ; | |
679 | } else { | |
680 | int try; | |
681 | u32 mask = s->irq_mask; | |
a1b274fb | 682 | void *data = &p_dev->dev.driver; /* something unique to this device */ |
1a8d4663 DB |
683 | |
684 | for (try = 0; try < 64; try++) { | |
685 | irq = try % 32; | |
686 | ||
687 | /* marked as available by driver, and not blocked by userspace? */ | |
688 | if (!((mask >> irq) & 1)) | |
689 | continue; | |
690 | ||
691 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
692 | if ((try < 32) && pcmcia_used_irq[irq]) | |
693 | continue; | |
694 | ||
695 | /* register the correct driver, if possible, of check whether | |
696 | * registering a dummy handle works, i.e. if the IRQ isn't | |
697 | * marked as used by the kernel resource management core */ | |
698 | ret = request_irq(irq, | |
699 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, | |
c533120b | 700 | type, |
bd65a685 | 701 | p_dev->devname, |
1a8d4663 DB |
702 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); |
703 | if (!ret) { | |
704 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
705 | free_irq(irq, data); | |
706 | break; | |
707 | } | |
708 | } | |
709 | } | |
710 | #endif | |
c181e0e0 DR |
711 | /* only assign PCI irq if no IRQ already assigned */ |
712 | if (ret && !s->irq.AssignedIRQ) { | |
1a8d4663 DB |
713 | if (!s->pci_irq) |
714 | return ret; | |
dace1453 | 715 | type = IRQF_SHARED; |
1a8d4663 DB |
716 | irq = s->pci_irq; |
717 | } | |
718 | ||
c533120b AC |
719 | if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) { |
720 | if (request_irq(irq, req->Handler, type, p_dev->devname, req->Instance)) | |
1a8d4663 DB |
721 | return CS_IN_USE; |
722 | } | |
723 | ||
c533120b | 724 | /* Make sure the fact the request type was overridden is passed back */ |
dace1453 | 725 | if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { |
c533120b | 726 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; |
ac449d6e DB |
727 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: " |
728 | "request for exclusive IRQ could not be fulfilled.\n"); | |
729 | dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver " | |
730 | "needs updating to supported shared IRQ lines.\n"); | |
c533120b | 731 | } |
1a8d4663 DB |
732 | c->irq.Attributes = req->Attributes; |
733 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
734 | s->irq.Config++; | |
735 | ||
736 | c->state |= CONFIG_IRQ_REQ; | |
e2d40963 | 737 | p_dev->_irq = 1; |
1a8d4663 DB |
738 | |
739 | #ifdef CONFIG_PCMCIA_PROBE | |
740 | pcmcia_used_irq[irq]++; | |
741 | #endif | |
742 | ||
4c89e88b | 743 | return 0; |
1a8d4663 DB |
744 | } /* pcmcia_request_irq */ |
745 | EXPORT_SYMBOL(pcmcia_request_irq); | |
746 | ||
747 | ||
748 | /** pcmcia_request_window | |
749 | * | |
750 | * Request_window() establishes a mapping between card memory space | |
751 | * and system memory space. | |
752 | */ | |
2bc5a9bd | 753 | int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 754 | { |
2bc5a9bd | 755 | struct pcmcia_socket *s = (*p_dev)->socket; |
1a8d4663 DB |
756 | window_t *win; |
757 | u_long align; | |
758 | int w; | |
759 | ||
1a8d4663 DB |
760 | if (!(s->state & SOCKET_PRESENT)) |
761 | return CS_NO_CARD; | |
762 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) | |
763 | return CS_BAD_ATTRIBUTE; | |
764 | ||
765 | /* Window size defaults to smallest available */ | |
766 | if (req->Size == 0) | |
767 | req->Size = s->map_size; | |
768 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
769 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
770 | req->Size : s->map_size); | |
771 | if (req->Size & (s->map_size-1)) | |
772 | return CS_BAD_SIZE; | |
773 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || | |
774 | (req->Base & (align-1))) | |
775 | return CS_BAD_BASE; | |
776 | if (req->Base) | |
777 | align = 0; | |
778 | ||
779 | /* Allocate system memory window */ | |
780 | for (w = 0; w < MAX_WIN; w++) | |
781 | if (!(s->state & SOCKET_WIN_REQ(w))) break; | |
782 | if (w == MAX_WIN) | |
783 | return CS_OUT_OF_RESOURCE; | |
784 | ||
785 | win = &s->win[w]; | |
786 | win->magic = WINDOW_MAGIC; | |
787 | win->index = w; | |
2bc5a9bd | 788 | win->handle = *p_dev; |
1a8d4663 DB |
789 | win->sock = s; |
790 | ||
791 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
792 | win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align, | |
793 | (req->Attributes & WIN_MAP_BELOW_1MB), s); | |
794 | if (!win->ctl.res) | |
795 | return CS_IN_USE; | |
796 | } | |
e2d40963 | 797 | (*p_dev)->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
798 | |
799 | /* Configure the socket controller */ | |
800 | win->ctl.map = w+1; | |
801 | win->ctl.flags = 0; | |
802 | win->ctl.speed = req->AccessSpeed; | |
803 | if (req->Attributes & WIN_MEMORY_TYPE) | |
804 | win->ctl.flags |= MAP_ATTRIB; | |
805 | if (req->Attributes & WIN_ENABLE) | |
806 | win->ctl.flags |= MAP_ACTIVE; | |
807 | if (req->Attributes & WIN_DATA_WIDTH_16) | |
808 | win->ctl.flags |= MAP_16BIT; | |
809 | if (req->Attributes & WIN_USE_WAIT) | |
810 | win->ctl.flags |= MAP_USE_WAIT; | |
811 | win->ctl.card_start = 0; | |
812 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
813 | return CS_BAD_ARGS; | |
814 | s->state |= SOCKET_WIN_REQ(w); | |
815 | ||
816 | /* Return window handle */ | |
817 | if (s->features & SS_CAP_STATIC_MAP) { | |
818 | req->Base = win->ctl.static_start; | |
819 | } else { | |
820 | req->Base = win->ctl.res->start; | |
821 | } | |
822 | *wh = win; | |
823 | ||
4c89e88b | 824 | return 0; |
1a8d4663 DB |
825 | } /* pcmcia_request_window */ |
826 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc DB |
827 | |
828 | void pcmcia_disable_device(struct pcmcia_device *p_dev) { | |
5f2a71fc | 829 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
830 | pcmcia_release_io(p_dev, &p_dev->io); |
831 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 832 | if (p_dev->win) |
fd238232 | 833 | pcmcia_release_window(p_dev->win); |
5f2a71fc DB |
834 | } |
835 | EXPORT_SYMBOL(pcmcia_disable_device); | |
a804b574 DB |
836 | |
837 | ||
838 | struct pcmcia_cfg_mem { | |
839 | tuple_t tuple; | |
840 | cisparse_t parse; | |
841 | u8 buf[256]; | |
8e2fc39d | 842 | cistpl_cftable_entry_t dflt; |
a804b574 DB |
843 | }; |
844 | ||
845 | /** | |
846 | * pcmcia_loop_config() - loop over configuration options | |
847 | * @p_dev: the struct pcmcia_device which we need to loop for. | |
848 | * @conf_check: function to call for each configuration option. | |
849 | * It gets passed the struct pcmcia_device, the CIS data | |
850 | * describing the configuration option, and private data | |
851 | * being passed to pcmcia_loop_config() | |
852 | * @priv_data: private data to be passed to the conf_check function. | |
853 | * | |
854 | * pcmcia_loop_config() loops over all configuration options, and calls | |
855 | * the driver-specific conf_check() for each one, checking whether | |
856 | * it is a valid one. | |
857 | */ | |
858 | int pcmcia_loop_config(struct pcmcia_device *p_dev, | |
859 | int (*conf_check) (struct pcmcia_device *p_dev, | |
860 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 861 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 862 | unsigned int vcc, |
a804b574 DB |
863 | void *priv_data), |
864 | void *priv_data) | |
865 | { | |
866 | struct pcmcia_cfg_mem *cfg_mem; | |
8e2fc39d | 867 | |
a804b574 DB |
868 | tuple_t *tuple; |
869 | int ret = -ENODEV; | |
ad913c11 | 870 | unsigned int vcc; |
a804b574 DB |
871 | |
872 | cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL); | |
873 | if (cfg_mem == NULL) | |
874 | return -ENOMEM; | |
875 | ||
ad913c11 DB |
876 | /* get the current Vcc setting */ |
877 | vcc = p_dev->socket->socket.Vcc; | |
878 | ||
a804b574 DB |
879 | tuple = &cfg_mem->tuple; |
880 | tuple->TupleData = cfg_mem->buf; | |
881 | tuple->TupleDataMax = 255; | |
882 | tuple->TupleOffset = 0; | |
883 | tuple->DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
884 | tuple->Attributes = 0; | |
885 | ||
886 | ret = pcmcia_get_first_tuple(p_dev, tuple); | |
887 | while (!ret) { | |
498ac189 DB |
888 | cistpl_cftable_entry_t *cfg = &cfg_mem->parse.cftable_entry; |
889 | ||
a804b574 DB |
890 | if (pcmcia_get_tuple_data(p_dev, tuple)) |
891 | goto next_entry; | |
892 | ||
893 | if (pcmcia_parse_tuple(p_dev, tuple, &cfg_mem->parse)) | |
894 | goto next_entry; | |
895 | ||
498ac189 DB |
896 | /* default values */ |
897 | p_dev->conf.ConfigIndex = cfg->index; | |
8e2fc39d DB |
898 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) |
899 | cfg_mem->dflt = *cfg; | |
498ac189 | 900 | |
ad913c11 | 901 | ret = conf_check(p_dev, cfg, &cfg_mem->dflt, vcc, priv_data); |
a804b574 DB |
902 | if (!ret) |
903 | break; | |
904 | ||
905 | next_entry: | |
906 | ret = pcmcia_get_next_tuple(p_dev, tuple); | |
907 | } | |
908 | ||
909 | return ret; | |
910 | } | |
911 | EXPORT_SYMBOL(pcmcia_loop_config); |