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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 | |
1a8d4663 DB |
26 | #include <pcmcia/cs_types.h> |
27 | #include <pcmcia/ss.h> | |
28 | #include <pcmcia/cs.h> | |
29 | #include <pcmcia/bulkmem.h> | |
30 | #include <pcmcia/cistpl.h> | |
31 | #include <pcmcia/cisreg.h> | |
32 | #include <pcmcia/ds.h> | |
33 | ||
34 | #include "cs_internal.h" | |
35 | #include "ds_internal.h" | |
36 | ||
37 | ||
1a8d4663 DB |
38 | /* Access speed for IO windows */ |
39 | static int io_speed = 0; | |
40 | module_param(io_speed, int, 0444); | |
41 | ||
42 | ||
43 | #ifdef CONFIG_PCMCIA_PROBE | |
531e5ca6 | 44 | #include <asm/irq.h> |
1a8d4663 DB |
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 | 204 | |
2bc5a9bd | 205 | int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, |
3448139b DB |
206 | conf_reg_t *reg) |
207 | { | |
2bc5a9bd DB |
208 | return pccard_access_configuration_register(p_dev->socket, |
209 | p_dev->func, reg); | |
3448139b DB |
210 | } |
211 | EXPORT_SYMBOL(pcmcia_access_configuration_register); | |
212 | ||
1a8d4663 DB |
213 | |
214 | ||
215 | int pccard_get_configuration_info(struct pcmcia_socket *s, | |
216 | unsigned int function, | |
217 | config_info_t *config) | |
218 | { | |
219 | config_t *c; | |
220 | ||
221 | if (!(s->state & SOCKET_PRESENT)) | |
222 | return CS_NO_CARD; | |
223 | ||
224 | config->Function = function; | |
225 | ||
226 | #ifdef CONFIG_CARDBUS | |
227 | if (s->state & SOCKET_CARDBUS) { | |
228 | memset(config, 0, sizeof(config_info_t)); | |
229 | config->Vcc = s->socket.Vcc; | |
230 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
231 | config->Option = s->cb_dev->subordinate->number; | |
232 | if (s->state & SOCKET_CARDBUS_CONFIG) { | |
233 | config->Attributes = CONF_VALID_CLIENT; | |
234 | config->IntType = INT_CARDBUS; | |
235 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
236 | if (config->AssignedIRQ) | |
237 | config->Attributes |= CONF_ENABLE_IRQ; | |
238 | config->BasePort1 = s->io[0].BasePort; | |
239 | config->NumPorts1 = s->io[0].NumPorts; | |
240 | } | |
241 | return CS_SUCCESS; | |
242 | } | |
243 | #endif | |
244 | ||
245 | c = (s->config != NULL) ? &s->config[function] : NULL; | |
246 | ||
247 | if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { | |
248 | config->Attributes = 0; | |
249 | config->Vcc = s->socket.Vcc; | |
250 | config->Vpp1 = config->Vpp2 = s->socket.Vpp; | |
251 | return CS_SUCCESS; | |
252 | } | |
253 | ||
254 | /* !!! This is a hack !!! */ | |
255 | memcpy(&config->Attributes, &c->Attributes, sizeof(config_t)); | |
256 | config->Attributes |= CONF_VALID_CLIENT; | |
257 | config->CardValues = c->CardValues; | |
258 | config->IRQAttributes = c->irq.Attributes; | |
259 | config->AssignedIRQ = s->irq.AssignedIRQ; | |
260 | config->BasePort1 = c->io.BasePort1; | |
261 | config->NumPorts1 = c->io.NumPorts1; | |
262 | config->Attributes1 = c->io.Attributes1; | |
263 | config->BasePort2 = c->io.BasePort2; | |
264 | config->NumPorts2 = c->io.NumPorts2; | |
265 | config->Attributes2 = c->io.Attributes2; | |
266 | config->IOAddrLines = c->io.IOAddrLines; | |
267 | ||
268 | return CS_SUCCESS; | |
269 | } /* pccard_get_configuration_info */ | |
1a8d4663 | 270 | |
2bc5a9bd | 271 | int pcmcia_get_configuration_info(struct pcmcia_device *p_dev, |
3448139b | 272 | config_info_t *config) |
1a8d4663 | 273 | { |
2bc5a9bd DB |
274 | return pccard_get_configuration_info(p_dev->socket, p_dev->func, |
275 | config); | |
3448139b DB |
276 | } |
277 | EXPORT_SYMBOL(pcmcia_get_configuration_info); | |
1a8d4663 DB |
278 | |
279 | ||
280 | /** pcmcia_get_window | |
281 | */ | |
282 | int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, | |
283 | int idx, win_req_t *req) | |
284 | { | |
285 | window_t *win; | |
286 | int w; | |
287 | ||
288 | if (!s || !(s->state & SOCKET_PRESENT)) | |
289 | return CS_NO_CARD; | |
290 | for (w = idx; w < MAX_WIN; w++) | |
291 | if (s->state & SOCKET_WIN_REQ(w)) | |
292 | break; | |
293 | if (w == MAX_WIN) | |
294 | return CS_NO_MORE_ITEMS; | |
295 | win = &s->win[w]; | |
296 | req->Base = win->ctl.res->start; | |
297 | req->Size = win->ctl.res->end - win->ctl.res->start + 1; | |
298 | req->AccessSpeed = win->ctl.speed; | |
299 | req->Attributes = 0; | |
300 | if (win->ctl.flags & MAP_ATTRIB) | |
301 | req->Attributes |= WIN_MEMORY_TYPE_AM; | |
302 | if (win->ctl.flags & MAP_ACTIVE) | |
303 | req->Attributes |= WIN_ENABLE; | |
304 | if (win->ctl.flags & MAP_16BIT) | |
305 | req->Attributes |= WIN_DATA_WIDTH_16; | |
306 | if (win->ctl.flags & MAP_USE_WAIT) | |
307 | req->Attributes |= WIN_USE_WAIT; | |
308 | *handle = win; | |
309 | return CS_SUCCESS; | |
310 | } /* pcmcia_get_window */ | |
311 | EXPORT_SYMBOL(pcmcia_get_window); | |
312 | ||
313 | ||
314 | /** pccard_get_status | |
315 | * | |
316 | * Get the current socket state bits. We don't support the latched | |
317 | * SocketState yet: I haven't seen any point for it. | |
318 | */ | |
319 | ||
320 | int pccard_get_status(struct pcmcia_socket *s, unsigned int function, | |
321 | cs_status_t *status) | |
322 | { | |
323 | config_t *c; | |
324 | int val; | |
325 | ||
326 | s->ops->get_status(s, &val); | |
327 | status->CardState = status->SocketState = 0; | |
328 | status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; | |
329 | status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; | |
330 | status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; | |
331 | status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; | |
332 | if (s->state & SOCKET_SUSPEND) | |
333 | status->CardState |= CS_EVENT_PM_SUSPEND; | |
334 | if (!(s->state & SOCKET_PRESENT)) | |
335 | return CS_NO_CARD; | |
336 | ||
337 | c = (s->config != NULL) ? &s->config[function] : NULL; | |
338 | if ((c != NULL) && (c->state & CONFIG_LOCKED) && | |
339 | (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { | |
340 | u_char reg; | |
341 | if (c->Present & PRESENT_PIN_REPLACE) { | |
342 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); | |
343 | status->CardState |= | |
344 | (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; | |
345 | status->CardState |= | |
346 | (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; | |
347 | status->CardState |= | |
348 | (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; | |
349 | status->CardState |= | |
350 | (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; | |
351 | } else { | |
352 | /* No PRR? Then assume we're always ready */ | |
353 | status->CardState |= CS_EVENT_READY_CHANGE; | |
354 | } | |
355 | if (c->Present & PRESENT_EXT_STATUS) { | |
356 | pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); | |
357 | status->CardState |= | |
358 | (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; | |
359 | } | |
360 | return CS_SUCCESS; | |
361 | } | |
362 | status->CardState |= | |
363 | (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; | |
364 | status->CardState |= | |
365 | (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; | |
366 | status->CardState |= | |
367 | (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; | |
368 | status->CardState |= | |
369 | (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; | |
370 | return CS_SUCCESS; | |
371 | } /* pccard_get_status */ | |
3448139b DB |
372 | |
373 | int pcmcia_get_status(client_handle_t handle, cs_status_t *status) | |
374 | { | |
375 | struct pcmcia_socket *s; | |
3448139b | 376 | s = SOCKET(handle); |
e12a9a93 | 377 | return pccard_get_status(s, handle->func, status); |
3448139b DB |
378 | } |
379 | EXPORT_SYMBOL(pcmcia_get_status); | |
380 | ||
1a8d4663 DB |
381 | |
382 | ||
383 | /** pcmcia_get_mem_page | |
384 | * | |
385 | * Change the card address of an already open memory window. | |
386 | */ | |
387 | int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) | |
388 | { | |
389 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
390 | return CS_BAD_HANDLE; | |
391 | req->Page = 0; | |
392 | req->CardOffset = win->ctl.card_start; | |
393 | return CS_SUCCESS; | |
394 | } /* pcmcia_get_mem_page */ | |
395 | EXPORT_SYMBOL(pcmcia_get_mem_page); | |
396 | ||
397 | ||
398 | int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) | |
399 | { | |
400 | struct pcmcia_socket *s; | |
401 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
402 | return CS_BAD_HANDLE; | |
403 | if (req->Page != 0) | |
404 | return CS_BAD_PAGE; | |
405 | s = win->sock; | |
406 | win->ctl.card_start = req->CardOffset; | |
407 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
408 | return CS_BAD_OFFSET; | |
409 | return CS_SUCCESS; | |
410 | } /* pcmcia_map_mem_page */ | |
411 | EXPORT_SYMBOL(pcmcia_map_mem_page); | |
412 | ||
413 | ||
414 | /** pcmcia_modify_configuration | |
415 | * | |
416 | * Modify a locked socket configuration | |
417 | */ | |
2bc5a9bd | 418 | int pcmcia_modify_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
419 | modconf_t *mod) |
420 | { | |
421 | struct pcmcia_socket *s; | |
422 | config_t *c; | |
423 | ||
2bc5a9bd DB |
424 | s = p_dev->socket; |
425 | c = CONFIG(p_dev); | |
1a8d4663 DB |
426 | if (!(s->state & SOCKET_PRESENT)) |
427 | return CS_NO_CARD; | |
428 | if (!(c->state & CONFIG_LOCKED)) | |
429 | return CS_CONFIGURATION_LOCKED; | |
430 | ||
431 | if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { | |
432 | if (mod->Attributes & CONF_ENABLE_IRQ) { | |
433 | c->Attributes |= CONF_ENABLE_IRQ; | |
434 | s->socket.io_irq = s->irq.AssignedIRQ; | |
435 | } else { | |
436 | c->Attributes &= ~CONF_ENABLE_IRQ; | |
437 | s->socket.io_irq = 0; | |
438 | } | |
439 | s->ops->set_socket(s, &s->socket); | |
440 | } | |
441 | ||
442 | if (mod->Attributes & CONF_VCC_CHANGE_VALID) | |
443 | return CS_BAD_VCC; | |
444 | ||
445 | /* We only allow changing Vpp1 and Vpp2 to the same value */ | |
446 | if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && | |
447 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { | |
448 | if (mod->Vpp1 != mod->Vpp2) | |
449 | return CS_BAD_VPP; | |
71ed90d8 | 450 | s->socket.Vpp = mod->Vpp1; |
1a8d4663 DB |
451 | if (s->ops->set_socket(s, &s->socket)) |
452 | return CS_BAD_VPP; | |
453 | } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || | |
454 | (mod->Attributes & CONF_VPP2_CHANGE_VALID)) | |
455 | return CS_BAD_VPP; | |
456 | ||
457 | return CS_SUCCESS; | |
458 | } /* modify_configuration */ | |
459 | EXPORT_SYMBOL(pcmcia_modify_configuration); | |
460 | ||
461 | ||
2bc5a9bd | 462 | int pcmcia_release_configuration(struct pcmcia_device *p_dev) |
1a8d4663 DB |
463 | { |
464 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
2bc5a9bd | 465 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
466 | int i; |
467 | ||
2bc5a9bd | 468 | if (!(p_dev->state & CLIENT_CONFIG_LOCKED)) |
1a8d4663 | 469 | return CS_BAD_HANDLE; |
2bc5a9bd | 470 | p_dev->state &= ~CLIENT_CONFIG_LOCKED; |
1a8d4663 | 471 | |
2bc5a9bd DB |
472 | if (!(p_dev->state & CLIENT_STALE)) { |
473 | config_t *c = CONFIG(p_dev); | |
1a8d4663 DB |
474 | if (--(s->lock_count) == 0) { |
475 | s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ | |
476 | s->socket.Vpp = 0; | |
477 | s->socket.io_irq = 0; | |
478 | s->ops->set_socket(s, &s->socket); | |
479 | } | |
480 | if (c->state & CONFIG_IO_REQ) | |
481 | for (i = 0; i < MAX_IO_WIN; i++) { | |
482 | if (s->io[i].NumPorts == 0) | |
483 | continue; | |
484 | s->io[i].Config--; | |
485 | if (s->io[i].Config != 0) | |
486 | continue; | |
487 | io.map = i; | |
488 | s->ops->set_io_map(s, &io); | |
489 | } | |
490 | c->state &= ~CONFIG_LOCKED; | |
491 | } | |
492 | ||
493 | return CS_SUCCESS; | |
494 | } /* pcmcia_release_configuration */ | |
495 | EXPORT_SYMBOL(pcmcia_release_configuration); | |
496 | ||
497 | ||
498 | /** pcmcia_release_io | |
499 | * | |
500 | * Release_io() releases the I/O ranges allocated by a client. This | |
501 | * may be invoked some time after a card ejection has already dumped | |
502 | * the actual socket configuration, so if the client is "stale", we | |
503 | * don't bother checking the port ranges against the current socket | |
504 | * values. | |
505 | */ | |
2bc5a9bd | 506 | int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 507 | { |
2bc5a9bd | 508 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 | 509 | |
2bc5a9bd | 510 | if (!(p_dev->state & CLIENT_IO_REQ)) |
1a8d4663 | 511 | return CS_BAD_HANDLE; |
2bc5a9bd | 512 | p_dev->state &= ~CLIENT_IO_REQ; |
1a8d4663 | 513 | |
2bc5a9bd DB |
514 | if (!(p_dev->state & CLIENT_STALE)) { |
515 | config_t *c = CONFIG(p_dev); | |
1a8d4663 DB |
516 | if (c->state & CONFIG_LOCKED) |
517 | return CS_CONFIGURATION_LOCKED; | |
518 | if ((c->io.BasePort1 != req->BasePort1) || | |
519 | (c->io.NumPorts1 != req->NumPorts1) || | |
520 | (c->io.BasePort2 != req->BasePort2) || | |
521 | (c->io.NumPorts2 != req->NumPorts2)) | |
522 | return CS_BAD_ARGS; | |
523 | c->state &= ~CONFIG_IO_REQ; | |
524 | } | |
525 | ||
526 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
527 | if (req->NumPorts2) | |
528 | release_io_space(s, req->BasePort2, req->NumPorts2); | |
529 | ||
530 | return CS_SUCCESS; | |
531 | } /* pcmcia_release_io */ | |
532 | EXPORT_SYMBOL(pcmcia_release_io); | |
533 | ||
534 | ||
2bc5a9bd | 535 | int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 536 | { |
2bc5a9bd DB |
537 | struct pcmcia_socket *s = p_dev->socket; |
538 | if (!(p_dev->state & CLIENT_IRQ_REQ)) | |
1a8d4663 | 539 | return CS_BAD_HANDLE; |
2bc5a9bd | 540 | p_dev->state &= ~CLIENT_IRQ_REQ; |
1a8d4663 | 541 | |
2bc5a9bd DB |
542 | if (!(p_dev->state & CLIENT_STALE)) { |
543 | config_t *c = CONFIG(p_dev); | |
1a8d4663 DB |
544 | if (c->state & CONFIG_LOCKED) |
545 | return CS_CONFIGURATION_LOCKED; | |
546 | if (c->irq.Attributes != req->Attributes) | |
547 | return CS_BAD_ATTRIBUTE; | |
548 | if (s->irq.AssignedIRQ != req->AssignedIRQ) | |
549 | return CS_BAD_IRQ; | |
550 | if (--s->irq.Config == 0) { | |
551 | c->state &= ~CONFIG_IRQ_REQ; | |
552 | s->irq.AssignedIRQ = 0; | |
553 | } | |
554 | } | |
555 | ||
556 | if (req->Attributes & IRQ_HANDLE_PRESENT) { | |
557 | free_irq(req->AssignedIRQ, req->Instance); | |
558 | } | |
559 | ||
560 | #ifdef CONFIG_PCMCIA_PROBE | |
561 | pcmcia_used_irq[req->AssignedIRQ]--; | |
562 | #endif | |
563 | ||
564 | return CS_SUCCESS; | |
565 | } /* pcmcia_release_irq */ | |
566 | EXPORT_SYMBOL(pcmcia_release_irq); | |
567 | ||
568 | ||
569 | int pcmcia_release_window(window_handle_t win) | |
570 | { | |
571 | struct pcmcia_socket *s; | |
572 | ||
573 | if ((win == NULL) || (win->magic != WINDOW_MAGIC)) | |
574 | return CS_BAD_HANDLE; | |
575 | s = win->sock; | |
576 | if (!(win->handle->state & CLIENT_WIN_REQ(win->index))) | |
577 | return CS_BAD_HANDLE; | |
578 | ||
579 | /* Shut down memory window */ | |
580 | win->ctl.flags &= ~MAP_ACTIVE; | |
581 | s->ops->set_mem_map(s, &win->ctl); | |
582 | s->state &= ~SOCKET_WIN_REQ(win->index); | |
583 | ||
584 | /* Release system memory */ | |
585 | if (win->ctl.res) { | |
586 | release_resource(win->ctl.res); | |
587 | kfree(win->ctl.res); | |
588 | win->ctl.res = NULL; | |
589 | } | |
590 | win->handle->state &= ~CLIENT_WIN_REQ(win->index); | |
591 | ||
592 | win->magic = 0; | |
593 | ||
594 | return CS_SUCCESS; | |
595 | } /* pcmcia_release_window */ | |
596 | EXPORT_SYMBOL(pcmcia_release_window); | |
597 | ||
598 | ||
2bc5a9bd | 599 | int pcmcia_request_configuration(struct pcmcia_device *p_dev, |
1a8d4663 DB |
600 | config_req_t *req) |
601 | { | |
602 | int i; | |
603 | u_int base; | |
2bc5a9bd | 604 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
605 | config_t *c; |
606 | pccard_io_map iomap; | |
607 | ||
1a8d4663 DB |
608 | if (!(s->state & SOCKET_PRESENT)) |
609 | return CS_NO_CARD; | |
610 | ||
1a8d4663 DB |
611 | if (req->IntType & INT_CARDBUS) |
612 | return CS_UNSUPPORTED_MODE; | |
2bc5a9bd | 613 | c = CONFIG(p_dev); |
1a8d4663 DB |
614 | if (c->state & CONFIG_LOCKED) |
615 | return CS_CONFIGURATION_LOCKED; | |
616 | ||
617 | /* Do power control. We don't allow changes in Vcc. */ | |
618 | if (s->socket.Vcc != req->Vcc) | |
619 | return CS_BAD_VCC; | |
620 | if (req->Vpp1 != req->Vpp2) | |
621 | return CS_BAD_VPP; | |
622 | s->socket.Vpp = req->Vpp1; | |
623 | if (s->ops->set_socket(s, &s->socket)) | |
624 | return CS_BAD_VPP; | |
625 | ||
1a8d4663 DB |
626 | /* Pick memory or I/O card, DMA mode, interrupt */ |
627 | c->IntType = req->IntType; | |
628 | c->Attributes = req->Attributes; | |
629 | if (req->IntType & INT_MEMORY_AND_IO) | |
630 | s->socket.flags |= SS_IOCARD; | |
631 | if (req->IntType & INT_ZOOMED_VIDEO) | |
632 | s->socket.flags |= SS_ZVCARD | SS_IOCARD; | |
633 | if (req->Attributes & CONF_ENABLE_DMA) | |
634 | s->socket.flags |= SS_DMA_MODE; | |
635 | if (req->Attributes & CONF_ENABLE_SPKR) | |
636 | s->socket.flags |= SS_SPKR_ENA; | |
637 | if (req->Attributes & CONF_ENABLE_IRQ) | |
638 | s->socket.io_irq = s->irq.AssignedIRQ; | |
639 | else | |
640 | s->socket.io_irq = 0; | |
641 | s->ops->set_socket(s, &s->socket); | |
642 | s->lock_count++; | |
643 | ||
644 | /* Set up CIS configuration registers */ | |
645 | base = c->ConfigBase = req->ConfigBase; | |
646 | c->Present = c->CardValues = req->Present; | |
647 | if (req->Present & PRESENT_COPY) { | |
648 | c->Copy = req->Copy; | |
649 | pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); | |
650 | } | |
651 | if (req->Present & PRESENT_OPTION) { | |
652 | if (s->functions == 1) { | |
653 | c->Option = req->ConfigIndex & COR_CONFIG_MASK; | |
654 | } else { | |
655 | c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; | |
656 | c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; | |
657 | if (req->Present & PRESENT_IOBASE_0) | |
658 | c->Option |= COR_ADDR_DECODE; | |
659 | } | |
660 | if (c->state & CONFIG_IRQ_REQ) | |
661 | if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) | |
662 | c->Option |= COR_LEVEL_REQ; | |
663 | pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); | |
664 | mdelay(40); | |
665 | } | |
666 | if (req->Present & PRESENT_STATUS) { | |
667 | c->Status = req->Status; | |
668 | pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); | |
669 | } | |
670 | if (req->Present & PRESENT_PIN_REPLACE) { | |
671 | c->Pin = req->Pin; | |
672 | pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); | |
673 | } | |
674 | if (req->Present & PRESENT_EXT_STATUS) { | |
675 | c->ExtStatus = req->ExtStatus; | |
676 | pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); | |
677 | } | |
678 | if (req->Present & PRESENT_IOBASE_0) { | |
679 | u_char b = c->io.BasePort1 & 0xff; | |
680 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); | |
681 | b = (c->io.BasePort1 >> 8) & 0xff; | |
682 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); | |
683 | } | |
684 | if (req->Present & PRESENT_IOSIZE) { | |
685 | u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; | |
686 | pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); | |
687 | } | |
688 | ||
689 | /* Configure I/O windows */ | |
690 | if (c->state & CONFIG_IO_REQ) { | |
691 | iomap.speed = io_speed; | |
692 | for (i = 0; i < MAX_IO_WIN; i++) | |
693 | if (s->io[i].NumPorts != 0) { | |
694 | iomap.map = i; | |
695 | iomap.flags = MAP_ACTIVE; | |
696 | switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) { | |
697 | case IO_DATA_PATH_WIDTH_16: | |
698 | iomap.flags |= MAP_16BIT; break; | |
699 | case IO_DATA_PATH_WIDTH_AUTO: | |
700 | iomap.flags |= MAP_AUTOSZ; break; | |
701 | default: | |
702 | break; | |
703 | } | |
704 | iomap.start = s->io[i].BasePort; | |
705 | iomap.stop = iomap.start + s->io[i].NumPorts - 1; | |
706 | s->ops->set_io_map(s, &iomap); | |
707 | s->io[i].Config++; | |
708 | } | |
709 | } | |
710 | ||
711 | c->state |= CONFIG_LOCKED; | |
2bc5a9bd | 712 | p_dev->state |= CLIENT_CONFIG_LOCKED; |
1a8d4663 DB |
713 | return CS_SUCCESS; |
714 | } /* pcmcia_request_configuration */ | |
715 | EXPORT_SYMBOL(pcmcia_request_configuration); | |
716 | ||
717 | ||
718 | /** pcmcia_request_io | |
719 | * | |
720 | * Request_io() reserves ranges of port addresses for a socket. | |
721 | * I have not implemented range sharing or alias addressing. | |
722 | */ | |
2bc5a9bd | 723 | int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) |
1a8d4663 | 724 | { |
2bc5a9bd | 725 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
726 | config_t *c; |
727 | ||
1a8d4663 DB |
728 | if (!(s->state & SOCKET_PRESENT)) |
729 | return CS_NO_CARD; | |
730 | ||
1a8d4663 DB |
731 | if (!req) |
732 | return CS_UNSUPPORTED_MODE; | |
2bc5a9bd | 733 | c = CONFIG(p_dev); |
1a8d4663 DB |
734 | if (c->state & CONFIG_LOCKED) |
735 | return CS_CONFIGURATION_LOCKED; | |
736 | if (c->state & CONFIG_IO_REQ) | |
737 | return CS_IN_USE; | |
738 | if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) | |
739 | return CS_BAD_ATTRIBUTE; | |
740 | if ((req->NumPorts2 > 0) && | |
741 | (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) | |
742 | return CS_BAD_ATTRIBUTE; | |
743 | ||
744 | if (alloc_io_space(s, req->Attributes1, &req->BasePort1, | |
745 | req->NumPorts1, req->IOAddrLines)) | |
746 | return CS_IN_USE; | |
747 | ||
748 | if (req->NumPorts2) { | |
749 | if (alloc_io_space(s, req->Attributes2, &req->BasePort2, | |
750 | req->NumPorts2, req->IOAddrLines)) { | |
751 | release_io_space(s, req->BasePort1, req->NumPorts1); | |
752 | return CS_IN_USE; | |
753 | } | |
754 | } | |
755 | ||
756 | c->io = *req; | |
757 | c->state |= CONFIG_IO_REQ; | |
2bc5a9bd | 758 | p_dev->state |= CLIENT_IO_REQ; |
1a8d4663 DB |
759 | return CS_SUCCESS; |
760 | } /* pcmcia_request_io */ | |
761 | EXPORT_SYMBOL(pcmcia_request_io); | |
762 | ||
763 | ||
764 | /** pcmcia_request_irq | |
765 | * | |
766 | * Request_irq() reserves an irq for this client. | |
767 | * | |
768 | * Also, since Linux only reserves irq's when they are actually | |
769 | * hooked, we don't guarantee that an irq will still be available | |
770 | * when the configuration is locked. Now that I think about it, | |
771 | * there might be a way to fix this using a dummy handler. | |
772 | */ | |
773 | ||
774 | #ifdef CONFIG_PCMCIA_PROBE | |
775 | static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs) | |
776 | { | |
777 | return IRQ_NONE; | |
778 | } | |
779 | #endif | |
780 | ||
2bc5a9bd | 781 | int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) |
1a8d4663 | 782 | { |
2bc5a9bd | 783 | struct pcmcia_socket *s = p_dev->socket; |
1a8d4663 DB |
784 | config_t *c; |
785 | int ret = CS_IN_USE, irq = 0; | |
1a8d4663 | 786 | |
1a8d4663 DB |
787 | if (!(s->state & SOCKET_PRESENT)) |
788 | return CS_NO_CARD; | |
2bc5a9bd | 789 | c = CONFIG(p_dev); |
1a8d4663 DB |
790 | if (c->state & CONFIG_LOCKED) |
791 | return CS_CONFIGURATION_LOCKED; | |
792 | if (c->state & CONFIG_IRQ_REQ) | |
793 | return CS_IN_USE; | |
794 | ||
795 | #ifdef CONFIG_PCMCIA_PROBE | |
796 | if (s->irq.AssignedIRQ != 0) { | |
797 | /* If the interrupt is already assigned, it must be the same */ | |
798 | irq = s->irq.AssignedIRQ; | |
799 | } else { | |
800 | int try; | |
801 | u32 mask = s->irq_mask; | |
a1b274fb | 802 | void *data = &p_dev->dev.driver; /* something unique to this device */ |
1a8d4663 DB |
803 | |
804 | for (try = 0; try < 64; try++) { | |
805 | irq = try % 32; | |
806 | ||
807 | /* marked as available by driver, and not blocked by userspace? */ | |
808 | if (!((mask >> irq) & 1)) | |
809 | continue; | |
810 | ||
811 | /* avoid an IRQ which is already used by a PCMCIA card */ | |
812 | if ((try < 32) && pcmcia_used_irq[irq]) | |
813 | continue; | |
814 | ||
815 | /* register the correct driver, if possible, of check whether | |
816 | * registering a dummy handle works, i.e. if the IRQ isn't | |
817 | * marked as used by the kernel resource management core */ | |
818 | ret = request_irq(irq, | |
819 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, | |
820 | ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) || | |
821 | (s->functions > 1) || | |
822 | (irq == s->pci_irq)) ? SA_SHIRQ : 0, | |
823 | p_dev->dev.bus_id, | |
824 | (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); | |
825 | if (!ret) { | |
826 | if (!(req->Attributes & IRQ_HANDLE_PRESENT)) | |
827 | free_irq(irq, data); | |
828 | break; | |
829 | } | |
830 | } | |
831 | } | |
832 | #endif | |
c181e0e0 DR |
833 | /* only assign PCI irq if no IRQ already assigned */ |
834 | if (ret && !s->irq.AssignedIRQ) { | |
1a8d4663 DB |
835 | if (!s->pci_irq) |
836 | return ret; | |
837 | irq = s->pci_irq; | |
838 | } | |
839 | ||
840 | if (ret && req->Attributes & IRQ_HANDLE_PRESENT) { | |
841 | if (request_irq(irq, req->Handler, | |
842 | ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) || | |
843 | (s->functions > 1) || | |
844 | (irq == s->pci_irq)) ? SA_SHIRQ : 0, | |
845 | p_dev->dev.bus_id, req->Instance)) | |
846 | return CS_IN_USE; | |
847 | } | |
848 | ||
849 | c->irq.Attributes = req->Attributes; | |
850 | s->irq.AssignedIRQ = req->AssignedIRQ = irq; | |
851 | s->irq.Config++; | |
852 | ||
853 | c->state |= CONFIG_IRQ_REQ; | |
2bc5a9bd | 854 | p_dev->state |= CLIENT_IRQ_REQ; |
1a8d4663 DB |
855 | |
856 | #ifdef CONFIG_PCMCIA_PROBE | |
857 | pcmcia_used_irq[irq]++; | |
858 | #endif | |
859 | ||
860 | return CS_SUCCESS; | |
861 | } /* pcmcia_request_irq */ | |
862 | EXPORT_SYMBOL(pcmcia_request_irq); | |
863 | ||
864 | ||
865 | /** pcmcia_request_window | |
866 | * | |
867 | * Request_window() establishes a mapping between card memory space | |
868 | * and system memory space. | |
869 | */ | |
2bc5a9bd | 870 | int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh) |
1a8d4663 | 871 | { |
2bc5a9bd | 872 | struct pcmcia_socket *s = (*p_dev)->socket; |
1a8d4663 DB |
873 | window_t *win; |
874 | u_long align; | |
875 | int w; | |
876 | ||
1a8d4663 DB |
877 | if (!(s->state & SOCKET_PRESENT)) |
878 | return CS_NO_CARD; | |
879 | if (req->Attributes & (WIN_PAGED | WIN_SHARED)) | |
880 | return CS_BAD_ATTRIBUTE; | |
881 | ||
882 | /* Window size defaults to smallest available */ | |
883 | if (req->Size == 0) | |
884 | req->Size = s->map_size; | |
885 | align = (((s->features & SS_CAP_MEM_ALIGN) || | |
886 | (req->Attributes & WIN_STRICT_ALIGN)) ? | |
887 | req->Size : s->map_size); | |
888 | if (req->Size & (s->map_size-1)) | |
889 | return CS_BAD_SIZE; | |
890 | if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || | |
891 | (req->Base & (align-1))) | |
892 | return CS_BAD_BASE; | |
893 | if (req->Base) | |
894 | align = 0; | |
895 | ||
896 | /* Allocate system memory window */ | |
897 | for (w = 0; w < MAX_WIN; w++) | |
898 | if (!(s->state & SOCKET_WIN_REQ(w))) break; | |
899 | if (w == MAX_WIN) | |
900 | return CS_OUT_OF_RESOURCE; | |
901 | ||
902 | win = &s->win[w]; | |
903 | win->magic = WINDOW_MAGIC; | |
904 | win->index = w; | |
2bc5a9bd | 905 | win->handle = *p_dev; |
1a8d4663 DB |
906 | win->sock = s; |
907 | ||
908 | if (!(s->features & SS_CAP_STATIC_MAP)) { | |
909 | win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align, | |
910 | (req->Attributes & WIN_MAP_BELOW_1MB), s); | |
911 | if (!win->ctl.res) | |
912 | return CS_IN_USE; | |
913 | } | |
2bc5a9bd | 914 | (*p_dev)->state |= CLIENT_WIN_REQ(w); |
1a8d4663 DB |
915 | |
916 | /* Configure the socket controller */ | |
917 | win->ctl.map = w+1; | |
918 | win->ctl.flags = 0; | |
919 | win->ctl.speed = req->AccessSpeed; | |
920 | if (req->Attributes & WIN_MEMORY_TYPE) | |
921 | win->ctl.flags |= MAP_ATTRIB; | |
922 | if (req->Attributes & WIN_ENABLE) | |
923 | win->ctl.flags |= MAP_ACTIVE; | |
924 | if (req->Attributes & WIN_DATA_WIDTH_16) | |
925 | win->ctl.flags |= MAP_16BIT; | |
926 | if (req->Attributes & WIN_USE_WAIT) | |
927 | win->ctl.flags |= MAP_USE_WAIT; | |
928 | win->ctl.card_start = 0; | |
929 | if (s->ops->set_mem_map(s, &win->ctl) != 0) | |
930 | return CS_BAD_ARGS; | |
931 | s->state |= SOCKET_WIN_REQ(w); | |
932 | ||
933 | /* Return window handle */ | |
934 | if (s->features & SS_CAP_STATIC_MAP) { | |
935 | req->Base = win->ctl.static_start; | |
936 | } else { | |
937 | req->Base = win->ctl.res->start; | |
938 | } | |
939 | *wh = win; | |
940 | ||
941 | return CS_SUCCESS; | |
942 | } /* pcmcia_request_window */ | |
943 | EXPORT_SYMBOL(pcmcia_request_window); |