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 | ||
47 | #ifdef DEBUG | |
48 | extern int ds_pc_debug; | |
1a8d4663 DB |
49 | |
50 | #define ds_dbg(skt, lvl, fmt, arg...) do { \ | |
51 | if (ds_pc_debug >= lvl) \ | |
52 | printk(KERN_DEBUG "pcmcia_resource: %s: " fmt, \ | |
53 | cs_socket_name(skt) , ## arg); \ | |
54 | } while (0) | |
55 | #else | |
56 | #define ds_dbg(lvl, fmt, arg...) do { } while (0) | |
57 | #endif | |
58 | ||
59 | ||
60 | ||
61 | /** alloc_io_space | |
62 | * | |
63 | * Special stuff for managing IO windows, because they are scarce | |
64 | */ | |
65 | ||
ecb8a847 OJ |
66 | static int alloc_io_space(struct pcmcia_socket *s, u_int attr, |
67 | unsigned int *base, unsigned int num, u_int lines) | |
1a8d4663 DB |
68 | { |
69 | int i; | |
ecb8a847 | 70 | unsigned int try, align; |
1a8d4663 DB |
71 | |
72 | align = (*base) ? (lines ? 1<<lines : 0) : 1; | |
73 | if (align && (align < num)) { | |
74 | if (*base) { | |
ecb8a847 | 75 | ds_dbg(s, 0, "odd IO request: num %#x align %#x\n", |
1a8d4663 DB |
76 | num, align); |
77 | align = 0; | |
78 | } else | |
79 | while (align && (align < num)) align <<= 1; | |
80 | } | |
81 | if (*base & ~(align-1)) { | |
ecb8a847 | 82 | ds_dbg(s, 0, "odd IO request: base %#x align %#x\n", |
1a8d4663 DB |
83 | *base, align); |
84 | align = 0; | |
85 | } | |
86 | if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { | |
87 | *base = s->io_offset | (*base & 0x0fff); | |
88 | return 0; | |
89 | } | |
90 | /* Check for an already-allocated window that must conflict with | |
91 | * what was asked for. It is a hack because it does not catch all | |
92 | * potential conflicts, just the most obvious ones. | |
93 | */ | |
94 | for (i = 0; i < MAX_IO_WIN; i++) | |
4708b5fa | 95 | if ((s->io[i].res) && *base && |
c7d00693 | 96 | ((s->io[i].res->start & (align-1)) == *base)) |
1a8d4663 DB |
97 | return 1; |
98 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 99 | if (!s->io[i].res) { |
1a8d4663 DB |
100 | s->io[i].res = pcmcia_find_io_region(*base, num, align, s); |
101 | if (s->io[i].res) { | |
c7d00693 DB |
102 | *base = s->io[i].res->start; |
103 | s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); | |
104 | s->io[i].InUse = num; | |
1a8d4663 DB |
105 | break; |
106 | } else | |
107 | return 1; | |
c7d00693 | 108 | } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) |
1a8d4663 DB |
109 | continue; |
110 | /* Try to extend top of window */ | |
c7d00693 | 111 | try = s->io[i].res->end + 1; |
1a8d4663 DB |
112 | if ((*base == 0) || (*base == try)) |
113 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, | |
114 | s->io[i].res->end + num, s) == 0) { | |
115 | *base = try; | |
1a8d4663 DB |
116 | s->io[i].InUse += num; |
117 | break; | |
118 | } | |
119 | /* Try to extend bottom of window */ | |
c7d00693 | 120 | try = s->io[i].res->start - num; |
1a8d4663 DB |
121 | if ((*base == 0) || (*base == try)) |
122 | if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, | |
123 | s->io[i].res->end, s) == 0) { | |
c7d00693 | 124 | *base = try; |
1a8d4663 DB |
125 | s->io[i].InUse += num; |
126 | break; | |
127 | } | |
128 | } | |
129 | return (i == MAX_IO_WIN); | |
130 | } /* alloc_io_space */ | |
131 | ||
132 | ||
ecb8a847 OJ |
133 | static void release_io_space(struct pcmcia_socket *s, unsigned int base, |
134 | unsigned int num) | |
1a8d4663 DB |
135 | { |
136 | int i; | |
137 | ||
138 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 DB |
139 | if (!s->io[i].res) |
140 | continue; | |
141 | if ((s->io[i].res->start <= base) && | |
142 | (s->io[i].res->end >= base+num-1)) { | |
1a8d4663 DB |
143 | s->io[i].InUse -= num; |
144 | /* Free the window if no one else is using it */ | |
145 | if (s->io[i].InUse == 0) { | |
1a8d4663 DB |
146 | release_resource(s->io[i].res); |
147 | kfree(s->io[i].res); | |
148 | s->io[i].res = NULL; | |
149 | } | |
150 | } | |
151 | } | |
152 | } /* release_io_space */ | |
153 | ||
154 | ||
155 | /** pccard_access_configuration_register | |
156 | * | |
157 | * Access_configuration_register() reads and writes configuration | |
158 | * registers in attribute memory. Memory window 0 is reserved for | |
159 | * this and the tuple reading services. | |
160 | */ | |
161 | ||
855cdf13 | 162 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
1a8d4663 DB |
163 | conf_reg_t *reg) |
164 | { | |
855cdf13 | 165 | struct pcmcia_socket *s; |
1a8d4663 DB |
166 | config_t *c; |
167 | int addr; | |
168 | u_char val; | |
169 | ||
855cdf13 | 170 | if (!p_dev || !p_dev->function_config) |
1a8d4663 DB |
171 | return CS_NO_CARD; |
172 | ||
855cdf13 DB |
173 | s = p_dev->socket; |
174 | c = p_dev->function_config; | |
1a8d4663 DB |
175 | |
176 | if (!(c->state & CONFIG_LOCKED)) | |
177 | return CS_CONFIGURATION_LOCKED; | |
178 | ||
179 | addr = (c->ConfigBase + reg->Offset) >> 1; | |
180 | ||
181 | switch (reg->Action) { | |
182 | case CS_READ: | |
183 | pcmcia_read_cis_mem(s, 1, addr, 1, &val); | |
184 | reg->Value = val; | |
185 | break; | |
186 | case CS_WRITE: | |
187 | val = reg->Value; | |
188 | pcmcia_write_cis_mem(s, 1, addr, 1, &val); | |
189 | break; | |
190 | default: | |
191 | return CS_BAD_ARGS; | |
192 | break; | |
193 | } | |
194 | return CS_SUCCESS; | |
855cdf13 | 195 | } /* pcmcia_access_configuration_register */ |
3448139b DB |
196 | EXPORT_SYMBOL(pcmcia_access_configuration_register); |
197 | ||
1a8d4663 | 198 | |
1a8d4663 | 199 | int pccard_get_configuration_info(struct pcmcia_socket *s, |
855cdf13 | 200 | struct pcmcia_device *p_dev, |
1a8d4663 DB |
201 | config_info_t *config) |
202 | { | |
203 | config_t *c; | |
204 | ||
205 | if (!(s->state & SOCKET_PRESENT)) | |
206 | return CS_NO_CARD; | |
207 | ||
1a8d4663 DB |
208 | |
209 | #ifdef CONFIG_CARDBUS | |
210 | if (s->state & SOCKET_CARDBUS) { | |
211 | memset(config, 0, sizeof(config_info_t)); | |
212 | config->Vcc = s->socket.Vcc; | |
213 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
214 | config->Option = s->cb_dev->subordinate->number; | |
215 | if (s->state & SOCKET_CARDBUS_CONFIG) { | |
216 | config->Attributes = CONF_VALID_CLIENT; | |
217 | config->IntType = INT_CARDBUS; | |
218 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
219 | if (config->AssignedIRQ) | |
220 | config->Attributes |= CONF_ENABLE_IRQ; | |
48b950ff DR |
221 | if (s->io[0].res) { |
222 | config->BasePort1 = s->io[0].res->start; | |
223 | config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1; | |
224 | } | |
1a8d4663 DB |
225 | } |
226 | return CS_SUCCESS; | |
227 | } | |
228 | #endif | |
229 | ||
48b950ff DR |
230 | if (p_dev) { |
231 | c = p_dev->function_config; | |
232 | config->Function = p_dev->func; | |
233 | } else { | |
234 | c = NULL; | |
235 | config->Function = 0; | |
236 | } | |
1a8d4663 DB |
237 | |
238 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { | |
239 | config->Attributes = 0; | |
240 | config->Vcc = s->socket.Vcc; | |
241 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
242 | return CS_SUCCESS; | |
243 | } | |
244 | ||
47a31976 DR |
245 | config->Attributes = c->Attributes | CONF_VALID_CLIENT; |
246 | config->Vcc = s->socket.Vcc; | |
247 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
248 | config->IntType = c->IntType; | |
249 | config->ConfigBase = c->ConfigBase; | |
250 | config->Status = c->Status; | |
251 | config->Pin = c->Pin; | |
252 | config->Copy = c->Copy; | |
253 | config->Option = c->Option; | |
254 | config->ExtStatus = c->ExtStatus; | |
255 | config->Present = config->CardValues = c->CardValues; | |
1a8d4663 DB |
256 | config->IRQAttributes = c->irq.Attributes; |
257 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
258 | config->BasePort1 = c->io.BasePort1; | |
259 | config->NumPorts1 = c->io.NumPorts1; | |
260 | config->Attributes1 = c->io.Attributes1; | |
261 | config->BasePort2 = c->io.BasePort2; | |
262 | config->NumPorts2 = c->io.NumPorts2; | |
263 | config->Attributes2 = c->io.Attributes2; | |
264 | config->IOAddrLines = c->io.IOAddrLines; | |
265 | ||
266 | return CS_SUCCESS; | |
267 | } /* pccard_get_configuration_info */ | |
1a8d4663 | 268 | |
2bc5a9bd | 269 | int pcmcia_get_configuration_info(struct pcmcia_device *p_dev, |
3448139b | 270 | config_info_t *config) |
1a8d4663 | 271 | { |
855cdf13 | 272 | return pccard_get_configuration_info(p_dev->socket, p_dev, |
2bc5a9bd | 273 | config); |
3448139b DB |
274 | } |
275 | EXPORT_SYMBOL(pcmcia_get_configuration_info); | |
1a8d4663 DB |
276 | |
277 | ||
278 | /** pcmcia_get_window | |
279 | */ | |
280 | int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, | |
281 | int idx, win_req_t *req) | |
282 | { | |
283 | window_t *win; | |
284 | int w; | |
285 | ||
286 | if (!s || !(s->state & SOCKET_PRESENT)) | |
287 | return CS_NO_CARD; | |
288 | for (w = idx; w < MAX_WIN; w++) | |
289 | if (s->state & SOCKET_WIN_REQ(w)) | |
290 | break; | |
291 | if (w == MAX_WIN) | |
292 | return CS_NO_MORE_ITEMS; | |
293 | win = &s->win[w]; | |
294 | req->Base = win->ctl.res->start; | |
295 | req->Size = win->ctl.res->end - win->ctl.res->start + 1; | |
296 | req->AccessSpeed = win->ctl.speed; | |
297 | req->Attributes = 0; | |
298 | if (win->ctl.flags & MAP_ATTRIB) | |
299 | req->Attributes |= WIN_MEMORY_TYPE_AM; | |
300 | if (win->ctl.flags & MAP_ACTIVE) | |
301 | req->Attributes |= WIN_ENABLE; | |
302 | if (win->ctl.flags & MAP_16BIT) | |
303 | req->Attributes |= WIN_DATA_WIDTH_16; | |
304 | if (win->ctl.flags & MAP_USE_WAIT) | |
305 | req->Attributes |= WIN_USE_WAIT; | |
306 | *handle = win; | |
307 | return CS_SUCCESS; | |
308 | } /* pcmcia_get_window */ | |
309 | EXPORT_SYMBOL(pcmcia_get_window); | |
310 | ||
311 | ||
1a8d4663 DB |
312 | /** pcmcia_get_mem_page |
313 | * | |
314 | * Change the card address of an already open memory window. | |
315 | */ | |
316 | int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) | |
317 | { | |
318 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
319 | return CS_BAD_HANDLE; | |
320 | req->Page = 0; | |
321 | req->CardOffset = win->ctl.card_start; | |
322 | return CS_SUCCESS; | |
323 | } /* pcmcia_get_mem_page */ | |
324 | EXPORT_SYMBOL(pcmcia_get_mem_page); | |
325 | ||
326 | ||
327 | int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) | |
328 | { | |
329 | struct pcmcia_socket *s; | |
330 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
331 | return CS_BAD_HANDLE; | |
332 | if (req->Page != 0) | |
333 | return CS_BAD_PAGE; | |
334 | s = win->sock; | |
335 | win->ctl.card_start = req->CardOffset; | |
336 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
337 | return CS_BAD_OFFSET; | |
338 | return CS_SUCCESS; | |
339 | } /* pcmcia_map_mem_page */ | |
340 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
341 | ||
342 | ||
343 | /** pcmcia_modify_configuration | |
344 | * | |
345 | * Modify a locked socket configuration | |
346 | */ | |
2bc5a9bd | 347 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
348 | modconf_t *mod) |
349 | { | |
350 | struct pcmcia_socket *s; | |
351 | config_t *c; | |
352 | ||
2bc5a9bd | 353 | s = p_dev->socket; |
dbb22f0d DB |
354 | c = p_dev->function_config; |
355 | ||
1a8d4663 DB |
356 | if (!(s->state & SOCKET_PRESENT)) |
357 | return CS_NO_CARD; | |
358 | if (!(c->state & CONFIG_LOCKED)) | |
359 | return CS_CONFIGURATION_LOCKED; | |
360 | ||
361 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
362 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
363 | c->Attributes |= CONF_ENABLE_IRQ; | |
364 | s->socket.io_irq = s->irq.AssignedIRQ; | |
365 | } else { | |
366 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
367 | s->socket.io_irq = 0; | |
368 | } | |
369 | s->ops->set_socket(s, &s->socket); | |
370 | } | |
371 | ||
372 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) | |
373 | return CS_BAD_VCC; | |
374 | ||
375 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
376 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
377 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
378 | if (mod->Vpp1 != mod->Vpp2) | |
379 | return CS_BAD_VPP; | |
71ed90d8 | 380 | s->socket.Vpp = mod->Vpp1; |
1a8d4663 DB |
381 | if (s->ops->set_socket(s, &s->socket)) |
382 | return CS_BAD_VPP; | |
383 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || | |
384 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) | |
385 | return CS_BAD_VPP; | |
386 | ||
4bbed523 DB |
387 | if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { |
388 | pccard_io_map io_off = { 0, 0, 0, 0, 1 }; | |
389 | pccard_io_map io_on; | |
390 | int i; | |
391 | ||
392 | io_on.speed = io_speed; | |
393 | for (i = 0; i < MAX_IO_WIN; i++) { | |
394 | if (!s->io[i].res) | |
395 | continue; | |
396 | io_off.map = i; | |
397 | io_on.map = i; | |
398 | ||
399 | io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; | |
400 | io_on.start = s->io[i].res->start; | |
401 | io_on.stop = s->io[i].res->end; | |
402 | ||
403 | s->ops->set_io_map(s, &io_off); | |
404 | mdelay(40); | |
405 | s->ops->set_io_map(s, &io_on); | |
406 | } | |
407 | } | |
408 | ||
1a8d4663 DB |
409 | return CS_SUCCESS; |
410 | } /* modify_configuration */ | |
411 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
412 | ||
413 | ||
2bc5a9bd | 414 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
415 | { |
416 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 417 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 418 | config_t *c = p_dev->function_config; |
1a8d4663 DB |
419 | int i; |
420 | ||
e2d40963 DB |
421 | if (p_dev->_locked) { |
422 | p_dev->_locked = 0; | |
1a8d4663 DB |
423 | if (--(s->lock_count) == 0) { |
424 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
425 | s->socket.Vpp = 0; | |
426 | s->socket.io_irq = 0; | |
427 | s->ops->set_socket(s, &s->socket); | |
428 | } | |
5f2a71fc DB |
429 | } |
430 | if (c->state & CONFIG_LOCKED) { | |
431 | c->state &= ~CONFIG_LOCKED; | |
1a8d4663 DB |
432 | if (c->state & CONFIG_IO_REQ) |
433 | for (i = 0; i < MAX_IO_WIN; i++) { | |
c7d00693 | 434 | if (!s->io[i].res) |
1a8d4663 DB |
435 | continue; |
436 | s->io[i].Config--; | |
437 | if (s->io[i].Config != 0) | |
438 | continue; | |
439 | io.map = i; | |
440 | s->ops->set_io_map(s, &io); | |
441 | } | |
1a8d4663 DB |
442 | } |
443 | ||
444 | return CS_SUCCESS; | |
445 | } /* pcmcia_release_configuration */ | |
1a8d4663 DB |
446 | |
447 | ||
448 | /** pcmcia_release_io | |
449 | * | |
450 | * Release_io() releases the I/O ranges allocated by a client. This | |
451 | * may be invoked some time after a card ejection has already dumped | |
452 | * the actual socket configuration, so if the client is "stale", we | |
453 | * don't bother checking the port ranges against the current socket | |
454 | * values. | |
455 | */ | |
b4c88400 | 456 | static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 457 | { |
2bc5a9bd | 458 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc | 459 | config_t *c = p_dev->function_config; |
1a8d4663 | 460 | |
e2d40963 | 461 | if (!p_dev->_io ) |
1a8d4663 | 462 | return CS_BAD_HANDLE; |
5f2a71fc | 463 | |
e2d40963 | 464 | p_dev->_io = 0; |
1a8d4663 | 465 | |
5f2a71fc DB |
466 | if ((c->io.BasePort1 != req->BasePort1) || |
467 | (c->io.NumPorts1 != req->NumPorts1) || | |
468 | (c->io.BasePort2 != req->BasePort2) || | |
469 | (c->io.NumPorts2 != req->NumPorts2)) | |
470 | return CS_BAD_ARGS; | |
471 | ||
472 | c->state &= ~CONFIG_IO_REQ; | |
1a8d4663 DB |
473 | |
474 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
475 | if (req->NumPorts2) | |
476 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
477 | ||
478 | return CS_SUCCESS; | |
479 | } /* pcmcia_release_io */ | |
1a8d4663 DB |
480 | |
481 | ||
b4c88400 | 482 | static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 483 | { |
2bc5a9bd | 484 | struct pcmcia_socket *s = p_dev->socket; |
5f2a71fc DB |
485 | config_t *c= p_dev->function_config; |
486 | ||
e2d40963 | 487 | if (!p_dev->_irq) |
1a8d4663 | 488 | return CS_BAD_HANDLE; |
e2d40963 | 489 | p_dev->_irq = 0; |
1a8d4663 | 490 | |
5f2a71fc DB |
491 | if (c->state & CONFIG_LOCKED) |
492 | return CS_CONFIGURATION_LOCKED; | |
493 | if (c->irq.Attributes != req->Attributes) | |
494 | return CS_BAD_ATTRIBUTE; | |
495 | if (s->irq.AssignedIRQ != req->AssignedIRQ) | |
496 | return CS_BAD_IRQ; | |
497 | if (--s->irq.Config == 0) { | |
498 | c->state &= ~CONFIG_IRQ_REQ; | |
499 | s->irq.AssignedIRQ = 0; | |
1a8d4663 DB |
500 | } |
501 | ||
502 | if (req->Attributes & IRQ_HANDLE_PRESENT) { | |
503 | free_irq(req->AssignedIRQ, req->Instance); | |
504 | } | |
505 | ||
506 | #ifdef CONFIG_PCMCIA_PROBE | |
507 | pcmcia_used_irq[req->AssignedIRQ]--; | |
508 | #endif | |
509 | ||
510 | return CS_SUCCESS; | |
511 | } /* pcmcia_release_irq */ | |
1a8d4663 DB |
512 | |
513 | ||
514 | int pcmcia_release_window(window_handle_t win) | |
515 | { | |
516 | struct pcmcia_socket *s; | |
517 | ||
518 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
519 | return CS_BAD_HANDLE; | |
520 | s = win->sock; | |
e2d40963 | 521 | if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) |
1a8d4663 DB |
522 | return CS_BAD_HANDLE; |
523 | ||
524 | /* Shut down memory window */ | |
525 | win->ctl.flags &= ~MAP_ACTIVE; | |
526 | s->ops->set_mem_map(s, &win->ctl); | |
527 | s->state &= ~SOCKET_WIN_REQ(win->index); | |
528 | ||
529 | /* Release system memory */ | |
530 | if (win->ctl.res) { | |
531 | release_resource(win->ctl.res); | |
532 | kfree(win->ctl.res); | |
533 | win->ctl.res = NULL; | |
534 | } | |
e2d40963 | 535 | win->handle->_win &= ~CLIENT_WIN_REQ(win->index); |
1a8d4663 DB |
536 | |
537 | win->magic = 0; | |
538 | ||
539 | return CS_SUCCESS; | |
540 | } /* pcmcia_release_window */ | |
541 | EXPORT_SYMBOL(pcmcia_release_window); | |
542 | ||
543 | ||
2bc5a9bd | 544 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
545 | config_req_t *req) |
546 | { | |
547 | int i; | |
548 | u_int base; | |
2bc5a9bd | 549 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
550 | config_t *c; |
551 | pccard_io_map iomap; | |
552 | ||
1a8d4663 DB |
553 | if (!(s->state & SOCKET_PRESENT)) |
554 | return CS_NO_CARD; | |
555 | ||
1a8d4663 DB |
556 | if (req->IntType & INT_CARDBUS) |
557 | return CS_UNSUPPORTED_MODE; | |
dbb22f0d | 558 | c = p_dev->function_config; |
1a8d4663 DB |
559 | if (c->state & CONFIG_LOCKED) |
560 | return CS_CONFIGURATION_LOCKED; | |
561 | ||
562 | /* Do power control. We don't allow changes in Vcc. */ | |
70294b46 | 563 | s->socket.Vpp = req->Vpp; |
1a8d4663 DB |
564 | if (s->ops->set_socket(s, &s->socket)) |
565 | return CS_BAD_VPP; | |
566 | ||
1a8d4663 DB |
567 | /* Pick memory or I/O card, DMA mode, interrupt */ |
568 | c->IntType = req->IntType; | |
569 | c->Attributes = req->Attributes; | |
570 | if (req->IntType & INT_MEMORY_AND_IO) | |
571 | s->socket.flags |= SS_IOCARD; | |
572 | if (req->IntType & INT_ZOOMED_VIDEO) | |
573 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
574 | if (req->Attributes & CONF_ENABLE_DMA) | |
575 | s->socket.flags |= SS_DMA_MODE; | |
576 | if (req->Attributes & CONF_ENABLE_SPKR) | |
577 | s->socket.flags |= SS_SPKR_ENA; | |
578 | if (req->Attributes & CONF_ENABLE_IRQ) | |
579 | s->socket.io_irq = s->irq.AssignedIRQ; | |
580 | else | |
581 | s->socket.io_irq = 0; | |
582 | s->ops->set_socket(s, &s->socket); | |
583 | s->lock_count++; | |
584 | ||
585 | /* Set up CIS configuration registers */ | |
586 | base = c->ConfigBase = req->ConfigBase; | |
1ae9c7d8 | 587 | c->CardValues = req->Present; |
1a8d4663 DB |
588 | if (req->Present & PRESENT_COPY) { |
589 | c->Copy = req->Copy; | |
590 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
591 | } | |
592 | if (req->Present & PRESENT_OPTION) { | |
593 | if (s->functions == 1) { | |
594 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
595 | } else { | |
596 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
597 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
598 | if (req->Present & PRESENT_IOBASE_0) | |
599 | c->Option |= COR_ADDR_DECODE; | |
600 | } | |
601 | if (c->state & CONFIG_IRQ_REQ) | |
602 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
603 | c->Option |= COR_LEVEL_REQ; | |
604 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
605 | mdelay(40); | |
606 | } | |
607 | if (req->Present & PRESENT_STATUS) { | |
608 | c->Status = req->Status; | |
609 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
610 | } | |
611 | if (req->Present & PRESENT_PIN_REPLACE) { | |
612 | c->Pin = req->Pin; | |
613 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
614 | } | |
615 | if (req->Present & PRESENT_EXT_STATUS) { | |
616 | c->ExtStatus = req->ExtStatus; | |
617 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
618 | } | |
619 | if (req->Present & PRESENT_IOBASE_0) { | |
620 | u_char b = c->io.BasePort1 & 0xff; | |
621 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
622 | b = (c->io.BasePort1 >> 8) & 0xff; | |
623 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
624 | } | |
625 | if (req->Present & PRESENT_IOSIZE) { | |
626 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
627 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
628 | } | |
629 | ||
630 | /* Configure I/O windows */ | |
631 | if (c->state & CONFIG_IO_REQ) { | |
632 | iomap.speed = io_speed; | |
633 | for (i = 0; i < MAX_IO_WIN; i++) | |
c7d00693 | 634 | if (s->io[i].res) { |
1a8d4663 DB |
635 | iomap.map = i; |
636 | iomap.flags = MAP_ACTIVE; | |
c7d00693 | 637 | switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { |
1a8d4663 DB |
638 | case IO_DATA_PATH_WIDTH_16: |
639 | iomap.flags |= MAP_16BIT; break; | |
640 | case IO_DATA_PATH_WIDTH_AUTO: | |
641 | iomap.flags |= MAP_AUTOSZ; break; | |
642 | default: | |
643 | break; | |
644 | } | |
c7d00693 DB |
645 | iomap.start = s->io[i].res->start; |
646 | iomap.stop = s->io[i].res->end; | |
1a8d4663 DB |
647 | s->ops->set_io_map(s, &iomap); |
648 | s->io[i].Config++; | |
649 | } | |
650 | } | |
651 | ||
652 | c->state |= CONFIG_LOCKED; | |
e2d40963 | 653 | p_dev->_locked = 1; |
1a8d4663 DB |
654 | return CS_SUCCESS; |
655 | } /* pcmcia_request_configuration */ | |
656 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
657 | ||
658 | ||
659 | /** pcmcia_request_io | |
660 | * | |
661 | * Request_io() reserves ranges of port addresses for a socket. | |
662 | * I have not implemented range sharing or alias addressing. | |
663 | */ | |
2bc5a9bd | 664 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 665 | { |
2bc5a9bd | 666 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
667 | config_t *c; |
668 | ||
1a8d4663 DB |
669 | if (!(s->state & SOCKET_PRESENT)) |
670 | return CS_NO_CARD; | |
671 | ||
1a8d4663 DB |
672 | if (!req) |
673 | return CS_UNSUPPORTED_MODE; | |
dbb22f0d | 674 | c = p_dev->function_config; |
1a8d4663 DB |
675 | if (c->state & CONFIG_LOCKED) |
676 | return CS_CONFIGURATION_LOCKED; | |
677 | if (c->state & CONFIG_IO_REQ) | |
678 | return CS_IN_USE; | |
679 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) | |
680 | return CS_BAD_ATTRIBUTE; | |
681 | if ((req->NumPorts2 > 0) && | |
682 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) | |
683 | return CS_BAD_ATTRIBUTE; | |
684 | ||
685 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, | |
686 | req->NumPorts1, req->IOAddrLines)) | |
687 | return CS_IN_USE; | |
688 | ||
689 | if (req->NumPorts2) { | |
690 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, | |
691 | req->NumPorts2, req->IOAddrLines)) { | |
692 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
693 | return CS_IN_USE; | |
694 | } | |
695 | } | |
696 | ||
697 | c->io = *req; | |
698 | c->state |= CONFIG_IO_REQ; | |
e2d40963 | 699 | p_dev->_io = 1; |
1a8d4663 DB |
700 | return CS_SUCCESS; |
701 | } /* pcmcia_request_io */ | |
702 | EXPORT_SYMBOL(pcmcia_request_io); | |
703 | ||
704 | ||
705 | /** pcmcia_request_irq | |
706 | * | |
707 | * Request_irq() reserves an irq for this client. | |
708 | * | |
709 | * Also, since Linux only reserves irq's when they are actually | |
710 | * hooked, we don't guarantee that an irq will still be available | |
711 | * when the configuration is locked. Now that I think about it, | |
712 | * there might be a way to fix this using a dummy handler. | |
713 | */ | |
714 | ||
715 | #ifdef CONFIG_PCMCIA_PROBE | |
7d12e780 | 716 | static irqreturn_t test_action(int cpl, void *dev_id) |
1a8d4663 DB |
717 | { |
718 | return IRQ_NONE; | |
719 | } | |
720 | #endif | |
721 | ||
2bc5a9bd | 722 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 723 | { |
2bc5a9bd | 724 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
725 | config_t *c; |
726 | int ret = CS_IN_USE, irq = 0; | |
c533120b | 727 | int type; |
1a8d4663 | 728 | |
1a8d4663 DB |
729 | if (!(s->state & SOCKET_PRESENT)) |
730 | return CS_NO_CARD; | |
dbb22f0d | 731 | c = p_dev->function_config; |
1a8d4663 DB |
732 | if (c->state & CONFIG_LOCKED) |
733 | return CS_CONFIGURATION_LOCKED; | |
734 | if (c->state & CONFIG_IRQ_REQ) | |
735 | return CS_IN_USE; | |
736 | ||
c533120b AC |
737 | /* Decide what type of interrupt we are registering */ |
738 | type = 0; | |
739 | if (s->functions > 1) /* All of this ought to be handled higher up */ | |
dace1453 | 740 | type = IRQF_SHARED; |
c533120b | 741 | if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) |
dace1453 | 742 | type = IRQF_SHARED; |
c533120b | 743 | |
1a8d4663 | 744 | #ifdef CONFIG_PCMCIA_PROBE |
635416ef AC |
745 | |
746 | #ifdef IRQ_NOAUTOEN | |
747 | /* if the underlying IRQ infrastructure allows for it, only allocate | |
748 | * the IRQ, but do not enable it | |
749 | */ | |
750 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
751 | type |= IRQ_NOAUTOEN; | |
752 | #endif /* IRQ_NOAUTOEN */ | |
753 | ||
1a8d4663 DB |
754 | if (s->irq.AssignedIRQ != 0) { |
755 | /* If the interrupt is already assigned, it must be the same */ | |
756 | irq = s->irq.AssignedIRQ; | |
757 | } else { | |
758 | int try; | |
759 | u32 mask = s->irq_mask; | |
a1b274fb | 760 | void *data = &p_dev->dev.driver; /* something unique to this device */ |
1a8d4663 DB |
761 | |
762 | for (try = 0; try < 64; try++) { | |
763 | irq = try % 32; | |
764 | ||
765 | /* marked as available by driver, and not blocked by userspace? */ | |
766 | if (!((mask >> irq) & 1)) | |
767 | continue; | |
768 | ||
769 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
770 | if ((try < 32) && pcmcia_used_irq[irq]) | |
771 | continue; | |
772 | ||
773 | /* register the correct driver, if possible, of check whether | |
774 | * registering a dummy handle works, i.e. if the IRQ isn't | |
775 | * marked as used by the kernel resource management core */ | |
776 | ret = request_irq(irq, | |
777 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, | |
c533120b | 778 | type, |
bd65a685 | 779 | p_dev->devname, |
1a8d4663 DB |
780 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); |
781 | if (!ret) { | |
782 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
783 | free_irq(irq, data); | |
784 | break; | |
785 | } | |
786 | } | |
787 | } | |
788 | #endif | |
c181e0e0 DR |
789 | /* only assign PCI irq if no IRQ already assigned */ |
790 | if (ret && !s->irq.AssignedIRQ) { | |
1a8d4663 DB |
791 | if (!s->pci_irq) |
792 | return ret; | |
dace1453 | 793 | type = IRQF_SHARED; |
1a8d4663 DB |
794 | irq = s->pci_irq; |
795 | } | |
796 | ||
c533120b AC |
797 | if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) { |
798 | if (request_irq(irq, req->Handler, type, p_dev->devname, req->Instance)) | |
1a8d4663 DB |
799 | return CS_IN_USE; |
800 | } | |
801 | ||
c533120b | 802 | /* Make sure the fact the request type was overridden is passed back */ |
dace1453 | 803 | if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { |
c533120b AC |
804 | req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; |
805 | printk(KERN_WARNING "pcmcia: request for exclusive IRQ could not be fulfilled.\n"); | |
806 | printk(KERN_WARNING "pcmcia: the driver needs updating to supported shared IRQ lines.\n"); | |
807 | } | |
1a8d4663 DB |
808 | c->irq.Attributes = req->Attributes; |
809 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
810 | s->irq.Config++; | |
811 | ||
812 | c->state |= CONFIG_IRQ_REQ; | |
e2d40963 | 813 | p_dev->_irq = 1; |
1a8d4663 DB |
814 | |
815 | #ifdef CONFIG_PCMCIA_PROBE | |
816 | pcmcia_used_irq[irq]++; | |
817 | #endif | |
818 | ||
819 | return CS_SUCCESS; | |
820 | } /* pcmcia_request_irq */ | |
821 | EXPORT_SYMBOL(pcmcia_request_irq); | |
822 | ||
823 | ||
824 | /** pcmcia_request_window | |
825 | * | |
826 | * Request_window() establishes a mapping between card memory space | |
827 | * and system memory space. | |
828 | */ | |
2bc5a9bd | 829 | int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 830 | { |
2bc5a9bd | 831 | struct pcmcia_socket *s = (*p_dev)->socket; |
1a8d4663 DB |
832 | window_t *win; |
833 | u_long align; | |
834 | int w; | |
835 | ||
1a8d4663 DB |
836 | if (!(s->state & SOCKET_PRESENT)) |
837 | return CS_NO_CARD; | |
838 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) | |
839 | return CS_BAD_ATTRIBUTE; | |
840 | ||
841 | /* Window size defaults to smallest available */ | |
842 | if (req->Size == 0) | |
843 | req->Size = s->map_size; | |
844 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
845 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
846 | req->Size : s->map_size); | |
847 | if (req->Size & (s->map_size-1)) | |
848 | return CS_BAD_SIZE; | |
849 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || | |
850 | (req->Base & (align-1))) | |
851 | return CS_BAD_BASE; | |
852 | if (req->Base) | |
853 | align = 0; | |
854 | ||
855 | /* Allocate system memory window */ | |
856 | for (w = 0; w < MAX_WIN; w++) | |
857 | if (!(s->state & SOCKET_WIN_REQ(w))) break; | |
858 | if (w == MAX_WIN) | |
859 | return CS_OUT_OF_RESOURCE; | |
860 | ||
861 | win = &s->win[w]; | |
862 | win->magic = WINDOW_MAGIC; | |
863 | win->index = w; | |
2bc5a9bd | 864 | win->handle = *p_dev; |
1a8d4663 DB |
865 | win->sock = s; |
866 | ||
867 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
868 | win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align, | |
869 | (req->Attributes & WIN_MAP_BELOW_1MB), s); | |
870 | if (!win->ctl.res) | |
871 | return CS_IN_USE; | |
872 | } | |
e2d40963 | 873 | (*p_dev)->_win |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
874 | |
875 | /* Configure the socket controller */ | |
876 | win->ctl.map = w+1; | |
877 | win->ctl.flags = 0; | |
878 | win->ctl.speed = req->AccessSpeed; | |
879 | if (req->Attributes & WIN_MEMORY_TYPE) | |
880 | win->ctl.flags |= MAP_ATTRIB; | |
881 | if (req->Attributes & WIN_ENABLE) | |
882 | win->ctl.flags |= MAP_ACTIVE; | |
883 | if (req->Attributes & WIN_DATA_WIDTH_16) | |
884 | win->ctl.flags |= MAP_16BIT; | |
885 | if (req->Attributes & WIN_USE_WAIT) | |
886 | win->ctl.flags |= MAP_USE_WAIT; | |
887 | win->ctl.card_start = 0; | |
888 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
889 | return CS_BAD_ARGS; | |
890 | s->state |= SOCKET_WIN_REQ(w); | |
891 | ||
892 | /* Return window handle */ | |
893 | if (s->features & SS_CAP_STATIC_MAP) { | |
894 | req->Base = win->ctl.static_start; | |
895 | } else { | |
896 | req->Base = win->ctl.res->start; | |
897 | } | |
898 | *wh = win; | |
899 | ||
900 | return CS_SUCCESS; | |
901 | } /* pcmcia_request_window */ | |
902 | EXPORT_SYMBOL(pcmcia_request_window); | |
5f2a71fc DB |
903 | |
904 | void pcmcia_disable_device(struct pcmcia_device *p_dev) { | |
5f2a71fc | 905 | pcmcia_release_configuration(p_dev); |
fd238232 DB |
906 | pcmcia_release_io(p_dev, &p_dev->io); |
907 | pcmcia_release_irq(p_dev, &p_dev->irq); | |
c1ac0228 | 908 | if (p_dev->win) |
fd238232 | 909 | pcmcia_release_window(p_dev->win); |
5f2a71fc DB |
910 | } |
911 | EXPORT_SYMBOL(pcmcia_disable_device); |