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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * rsrc_nonstatic.c -- Resource management routines for !SS_CAP_STATIC_MAP sockets | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * The initial developer of the original code is David A. Hinds | |
9 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
10 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
11 | * | |
12 | * (C) 1999 David A. Hinds | |
13 | */ | |
14 | ||
1da177e4 LT |
15 | #include <linux/module.h> |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/ioport.h> | |
24 | #include <linux/timer.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/device.h> | |
27 | ||
28 | #include <asm/irq.h> | |
29 | #include <asm/io.h> | |
30 | ||
31 | #include <pcmcia/cs_types.h> | |
32 | #include <pcmcia/ss.h> | |
33 | #include <pcmcia/cs.h> | |
1da177e4 LT |
34 | #include <pcmcia/cistpl.h> |
35 | #include "cs_internal.h" | |
36 | ||
37 | MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); | |
38 | MODULE_LICENSE("GPL"); | |
39 | ||
40 | /* Parameters that can be set with 'insmod' */ | |
41 | ||
42 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) | |
43 | ||
44 | INT_MODULE_PARM(probe_mem, 1); /* memory probe? */ | |
45 | #ifdef CONFIG_PCMCIA_PROBE | |
46 | INT_MODULE_PARM(probe_io, 1); /* IO port probe? */ | |
47 | INT_MODULE_PARM(mem_limit, 0x10000); | |
48 | #endif | |
49 | ||
50 | /* for io_db and mem_db */ | |
51 | struct resource_map { | |
52 | u_long base, num; | |
53 | struct resource_map *next; | |
54 | }; | |
55 | ||
56 | struct socket_data { | |
57 | struct resource_map mem_db; | |
58 | struct resource_map io_db; | |
59 | unsigned int rsrc_mem_probe; | |
60 | }; | |
61 | ||
7fe908dd | 62 | static DEFINE_MUTEX(rsrc_mutex); |
1da177e4 LT |
63 | #define MEM_PROBE_LOW (1 << 0) |
64 | #define MEM_PROBE_HIGH (1 << 1) | |
65 | ||
66 | ||
67 | /*====================================================================== | |
68 | ||
69 | Linux resource management extensions | |
70 | ||
71 | ======================================================================*/ | |
72 | ||
73 | static struct resource * | |
2427ddd8 | 74 | make_resource(resource_size_t b, resource_size_t n, int flags, char *name) |
1da177e4 | 75 | { |
8084b372 | 76 | struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); |
1da177e4 LT |
77 | |
78 | if (res) { | |
1da177e4 LT |
79 | res->name = name; |
80 | res->start = b; | |
81 | res->end = b + n - 1; | |
82 | res->flags = flags; | |
83 | } | |
84 | return res; | |
85 | } | |
86 | ||
87 | static struct resource * | |
2427ddd8 GKH |
88 | claim_region(struct pcmcia_socket *s, resource_size_t base, |
89 | resource_size_t size, int type, char *name) | |
1da177e4 LT |
90 | { |
91 | struct resource *res, *parent; | |
92 | ||
93 | parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; | |
94 | res = make_resource(base, size, type | IORESOURCE_BUSY, name); | |
95 | ||
96 | if (res) { | |
97 | #ifdef CONFIG_PCI | |
98 | if (s && s->cb_dev) | |
99 | parent = pci_find_parent_resource(s->cb_dev, res); | |
100 | #endif | |
101 | if (!parent || request_resource(parent, res)) { | |
102 | kfree(res); | |
103 | res = NULL; | |
104 | } | |
105 | } | |
106 | return res; | |
107 | } | |
108 | ||
109 | static void free_region(struct resource *res) | |
110 | { | |
111 | if (res) { | |
112 | release_resource(res); | |
113 | kfree(res); | |
114 | } | |
115 | } | |
116 | ||
117 | /*====================================================================== | |
118 | ||
119 | These manage the internal databases of available resources. | |
120 | ||
121 | ======================================================================*/ | |
122 | ||
123 | static int add_interval(struct resource_map *map, u_long base, u_long num) | |
124 | { | |
125 | struct resource_map *p, *q; | |
126 | ||
127 | for (p = map; ; p = p->next) { | |
128 | if ((p != map) && (p->base+p->num-1 >= base)) | |
129 | return -1; | |
130 | if ((p->next == map) || (p->next->base > base+num-1)) | |
131 | break; | |
132 | } | |
133 | q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
134 | if (!q) return CS_OUT_OF_RESOURCE; | |
135 | q->base = base; q->num = num; | |
136 | q->next = p->next; p->next = q; | |
4c89e88b | 137 | return 0; |
1da177e4 LT |
138 | } |
139 | ||
140 | /*====================================================================*/ | |
141 | ||
142 | static int sub_interval(struct resource_map *map, u_long base, u_long num) | |
143 | { | |
144 | struct resource_map *p, *q; | |
145 | ||
146 | for (p = map; ; p = q) { | |
147 | q = p->next; | |
148 | if (q == map) | |
149 | break; | |
150 | if ((q->base+q->num > base) && (base+num > q->base)) { | |
151 | if (q->base >= base) { | |
152 | if (q->base+q->num <= base+num) { | |
153 | /* Delete whole block */ | |
154 | p->next = q->next; | |
155 | kfree(q); | |
156 | /* don't advance the pointer yet */ | |
157 | q = p; | |
158 | } else { | |
159 | /* Cut off bit from the front */ | |
160 | q->num = q->base + q->num - base - num; | |
161 | q->base = base + num; | |
162 | } | |
163 | } else if (q->base+q->num <= base+num) { | |
164 | /* Cut off bit from the end */ | |
165 | q->num = base - q->base; | |
166 | } else { | |
167 | /* Split the block into two pieces */ | |
168 | p = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
169 | if (!p) return CS_OUT_OF_RESOURCE; | |
170 | p->base = base+num; | |
171 | p->num = q->base+q->num - p->base; | |
172 | q->num = base - q->base; | |
173 | p->next = q->next ; q->next = p; | |
174 | } | |
175 | } | |
176 | } | |
4c89e88b | 177 | return 0; |
1da177e4 LT |
178 | } |
179 | ||
180 | /*====================================================================== | |
181 | ||
182 | These routines examine a region of IO or memory addresses to | |
183 | determine what ranges might be genuinely available. | |
184 | ||
185 | ======================================================================*/ | |
186 | ||
187 | #ifdef CONFIG_PCMCIA_PROBE | |
906da809 OJ |
188 | static void do_io_probe(struct pcmcia_socket *s, unsigned int base, |
189 | unsigned int num) | |
1da177e4 LT |
190 | { |
191 | struct resource *res; | |
192 | struct socket_data *s_data = s->resource_data; | |
906da809 | 193 | unsigned int i, j, bad; |
1da177e4 LT |
194 | int any; |
195 | u_char *b, hole, most; | |
196 | ||
dbe4ea5f DB |
197 | dev_printk(KERN_INFO, &s->dev, "cs: IO port probe %#x-%#x:", |
198 | base, base+num-1); | |
1da177e4 LT |
199 | |
200 | /* First, what does a floating port look like? */ | |
8084b372 | 201 | b = kzalloc(256, GFP_KERNEL); |
1da177e4 | 202 | if (!b) { |
dbe4ea5f DB |
203 | dev_printk(KERN_ERR, &s->dev, |
204 | "do_io_probe: unable to kmalloc 256 bytes"); | |
1da177e4 LT |
205 | return; |
206 | } | |
1da177e4 LT |
207 | for (i = base, most = 0; i < base+num; i += 8) { |
208 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
209 | if (!res) | |
210 | continue; | |
211 | hole = inb(i); | |
212 | for (j = 1; j < 8; j++) | |
213 | if (inb(i+j) != hole) break; | |
214 | free_region(res); | |
215 | if ((j == 8) && (++b[hole] > b[most])) | |
216 | most = hole; | |
217 | if (b[most] == 127) break; | |
218 | } | |
219 | kfree(b); | |
220 | ||
221 | bad = any = 0; | |
222 | for (i = base; i < base+num; i += 8) { | |
223 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
224 | if (!res) | |
225 | continue; | |
226 | for (j = 0; j < 8; j++) | |
227 | if (inb(i+j) != most) break; | |
228 | free_region(res); | |
229 | if (j < 8) { | |
230 | if (!any) | |
231 | printk(" excluding"); | |
232 | if (!bad) | |
233 | bad = any = i; | |
234 | } else { | |
235 | if (bad) { | |
236 | sub_interval(&s_data->io_db, bad, i-bad); | |
906da809 | 237 | printk(" %#x-%#x", bad, i-1); |
1da177e4 LT |
238 | bad = 0; |
239 | } | |
240 | } | |
241 | } | |
242 | if (bad) { | |
243 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
244 | printk(" nothing: probe failed.\n"); | |
245 | return; | |
246 | } else { | |
247 | sub_interval(&s_data->io_db, bad, i-bad); | |
906da809 | 248 | printk(" %#x-%#x", bad, i-1); |
1da177e4 LT |
249 | } |
250 | } | |
251 | ||
252 | printk(any ? "\n" : " clean.\n"); | |
253 | } | |
254 | #endif | |
255 | ||
256 | /*====================================================================== | |
257 | ||
258 | This is tricky... when we set up CIS memory, we try to validate | |
259 | the memory window space allocations. | |
260 | ||
261 | ======================================================================*/ | |
262 | ||
263 | /* Validation function for cards with a valid CIS */ | |
c5081d5f DB |
264 | static int readable(struct pcmcia_socket *s, struct resource *res, |
265 | unsigned int *count) | |
1da177e4 LT |
266 | { |
267 | int ret = -1; | |
268 | ||
269 | s->cis_mem.res = res; | |
270 | s->cis_virt = ioremap(res->start, s->map_size); | |
271 | if (s->cis_virt) { | |
c5081d5f | 272 | ret = pccard_validate_cis(s, BIND_FN_ALL, count); |
1da177e4 LT |
273 | /* invalidate mapping and CIS cache */ |
274 | iounmap(s->cis_virt); | |
275 | s->cis_virt = NULL; | |
276 | destroy_cis_cache(s); | |
277 | } | |
278 | s->cis_mem.res = NULL; | |
c5081d5f | 279 | if ((ret != 0) || (count == 0)) |
1da177e4 LT |
280 | return 0; |
281 | return 1; | |
282 | } | |
283 | ||
284 | /* Validation function for simple memory cards */ | |
285 | static int checksum(struct pcmcia_socket *s, struct resource *res) | |
286 | { | |
287 | pccard_mem_map map; | |
288 | int i, a = 0, b = -1, d; | |
289 | void __iomem *virt; | |
290 | ||
291 | virt = ioremap(res->start, s->map_size); | |
292 | if (virt) { | |
293 | map.map = 0; | |
294 | map.flags = MAP_ACTIVE; | |
295 | map.speed = 0; | |
296 | map.res = res; | |
297 | map.card_start = 0; | |
298 | s->ops->set_mem_map(s, &map); | |
299 | ||
300 | /* Don't bother checking every word... */ | |
301 | for (i = 0; i < s->map_size; i += 44) { | |
302 | d = readl(virt+i); | |
303 | a += d; | |
304 | b &= d; | |
305 | } | |
306 | ||
307 | map.flags = 0; | |
308 | s->ops->set_mem_map(s, &map); | |
309 | ||
310 | iounmap(virt); | |
311 | } | |
312 | ||
313 | return (b == -1) ? -1 : (a>>1); | |
314 | } | |
315 | ||
316 | static int | |
317 | cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
318 | { | |
319 | struct resource *res1, *res2; | |
c5081d5f | 320 | unsigned int info1, info2; |
1da177e4 LT |
321 | int ret = 0; |
322 | ||
323 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
324 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
325 | ||
326 | if (res1 && res2) { | |
327 | ret = readable(s, res1, &info1); | |
328 | ret += readable(s, res2, &info2); | |
329 | } | |
330 | ||
331 | free_region(res2); | |
332 | free_region(res1); | |
333 | ||
c5081d5f | 334 | return (ret == 2) && (info1 == info2); |
1da177e4 LT |
335 | } |
336 | ||
337 | static int | |
338 | checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
339 | { | |
340 | struct resource *res1, *res2; | |
341 | int a = -1, b = -1; | |
342 | ||
343 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
344 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
345 | ||
346 | if (res1 && res2) { | |
347 | a = checksum(s, res1); | |
348 | b = checksum(s, res2); | |
349 | } | |
350 | ||
351 | free_region(res2); | |
352 | free_region(res1); | |
353 | ||
354 | return (a == b) && (a >= 0); | |
355 | } | |
356 | ||
357 | /*====================================================================== | |
358 | ||
359 | The memory probe. If the memory list includes a 64K-aligned block | |
360 | below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
361 | least mem_limit free space, we quit. | |
362 | ||
363 | ======================================================================*/ | |
364 | ||
365 | static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) | |
366 | { | |
367 | struct socket_data *s_data = s->resource_data; | |
368 | u_long i, j, bad, fail, step; | |
369 | ||
dbe4ea5f DB |
370 | dev_printk(KERN_INFO, &s->dev, "cs: memory probe 0x%06lx-0x%06lx:", |
371 | base, base+num-1); | |
1da177e4 LT |
372 | bad = fail = 0; |
373 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
2ad0a0a7 DB |
374 | /* don't allow too large steps */ |
375 | if (step > 0x800000) | |
376 | step = 0x800000; | |
1da177e4 LT |
377 | /* cis_readable wants to map 2x map_size */ |
378 | if (step < 2 * s->map_size) | |
379 | step = 2 * s->map_size; | |
380 | for (i = j = base; i < base+num; i = j + step) { | |
381 | if (!fail) { | |
382 | for (j = i; j < base+num; j += step) { | |
383 | if (cis_readable(s, j, step)) | |
384 | break; | |
385 | } | |
386 | fail = ((i == base) && (j == base+num)); | |
387 | } | |
388 | if (fail) { | |
389 | for (j = i; j < base+num; j += 2*step) | |
390 | if (checksum_match(s, j, step) && | |
391 | checksum_match(s, j + step, step)) | |
392 | break; | |
393 | } | |
394 | if (i != j) { | |
395 | if (!bad) printk(" excluding"); | |
396 | printk(" %#05lx-%#05lx", i, j-1); | |
397 | sub_interval(&s_data->mem_db, i, j-i); | |
398 | bad += j-i; | |
399 | } | |
400 | } | |
401 | printk(bad ? "\n" : " clean.\n"); | |
402 | return (num - bad); | |
403 | } | |
404 | ||
405 | #ifdef CONFIG_PCMCIA_PROBE | |
406 | ||
407 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) | |
408 | { | |
de75914e DB |
409 | struct socket_data *s_data = s->resource_data; |
410 | u_long ok; | |
411 | if (m == &s_data->mem_db) | |
412 | return 0; | |
413 | ok = inv_probe(m->next, s); | |
414 | if (ok) { | |
415 | if (m->base >= 0x100000) | |
416 | sub_interval(&s_data->mem_db, m->base, m->num); | |
417 | return ok; | |
418 | } | |
419 | if (m->base < 0x100000) | |
420 | return 0; | |
421 | return do_mem_probe(m->base, m->num, s); | |
1da177e4 LT |
422 | } |
423 | ||
de75914e | 424 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 425 | { |
de75914e DB |
426 | struct resource_map *m, mm; |
427 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
428 | unsigned long b, i, ok = 0; | |
429 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 430 | |
de75914e DB |
431 | /* We do up to four passes through the list */ |
432 | if (probe_mask & MEM_PROBE_HIGH) { | |
433 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
434 | return 0; | |
dbe4ea5f DB |
435 | dev_printk(KERN_NOTICE, &s->dev, |
436 | "cs: warning: no high memory space available!\n"); | |
de75914e | 437 | return -ENODEV; |
1da177e4 | 438 | } |
de75914e DB |
439 | |
440 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
441 | mm = *m; | |
442 | /* Only probe < 1 MB */ | |
443 | if (mm.base >= 0x100000) | |
444 | continue; | |
445 | if ((mm.base | mm.num) & 0xffff) { | |
446 | ok += do_mem_probe(mm.base, mm.num, s); | |
447 | continue; | |
448 | } | |
449 | /* Special probe for 64K-aligned block */ | |
450 | for (i = 0; i < 4; i++) { | |
451 | b = order[i] << 12; | |
452 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
453 | if (ok >= mem_limit) | |
454 | sub_interval(&s_data->mem_db, b, 0x10000); | |
455 | else | |
456 | ok += do_mem_probe(b, 0x10000, s); | |
457 | } | |
458 | } | |
1da177e4 | 459 | } |
de75914e DB |
460 | |
461 | if (ok > 0) | |
462 | return 0; | |
463 | ||
464 | return -ENODEV; | |
1da177e4 LT |
465 | } |
466 | ||
467 | #else /* CONFIG_PCMCIA_PROBE */ | |
468 | ||
2cff9447 | 469 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 LT |
470 | { |
471 | struct resource_map *m, mm; | |
472 | struct socket_data *s_data = s->resource_data; | |
2cff9447 | 473 | unsigned long ok = 0; |
1da177e4 LT |
474 | |
475 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
476 | mm = *m; | |
2cff9447 | 477 | ok += do_mem_probe(mm.base, mm.num, s); |
1da177e4 | 478 | } |
2cff9447 AM |
479 | if (ok > 0) |
480 | return 0; | |
481 | return -ENODEV; | |
1da177e4 LT |
482 | } |
483 | ||
484 | #endif /* CONFIG_PCMCIA_PROBE */ | |
485 | ||
486 | ||
487 | /* | |
7fe908dd | 488 | * Locking note: Must be called with skt_mutex held! |
1da177e4 | 489 | */ |
de75914e | 490 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
491 | { |
492 | struct socket_data *s_data = s->resource_data; | |
de75914e DB |
493 | unsigned int probe_mask = MEM_PROBE_LOW; |
494 | int ret = 0; | |
495 | ||
496 | if (!probe_mem) | |
497 | return 0; | |
1da177e4 | 498 | |
7fe908dd | 499 | mutex_lock(&rsrc_mutex); |
1da177e4 | 500 | |
de75914e DB |
501 | if (s->features & SS_CAP_PAGE_REGS) |
502 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 503 | |
de75914e DB |
504 | if (probe_mask & ~s_data->rsrc_mem_probe) { |
505 | if (s->state & SOCKET_PRESENT) | |
506 | ret = validate_mem(s, probe_mask); | |
507 | if (!ret) | |
1da177e4 | 508 | s_data->rsrc_mem_probe |= probe_mask; |
de75914e | 509 | } |
1da177e4 | 510 | |
7fe908dd | 511 | mutex_unlock(&rsrc_mutex); |
1da177e4 | 512 | |
de75914e | 513 | return ret; |
1da177e4 LT |
514 | } |
515 | ||
516 | struct pcmcia_align_data { | |
517 | unsigned long mask; | |
518 | unsigned long offset; | |
519 | struct resource_map *map; | |
520 | }; | |
521 | ||
522 | static void | |
523 | pcmcia_common_align(void *align_data, struct resource *res, | |
2427ddd8 | 524 | resource_size_t size, resource_size_t align) |
1da177e4 LT |
525 | { |
526 | struct pcmcia_align_data *data = align_data; | |
2427ddd8 | 527 | resource_size_t start; |
1da177e4 LT |
528 | /* |
529 | * Ensure that we have the correct start address | |
530 | */ | |
531 | start = (res->start & ~data->mask) + data->offset; | |
532 | if (start < res->start) | |
533 | start += data->mask + 1; | |
534 | res->start = start; | |
535 | } | |
536 | ||
537 | static void | |
2427ddd8 GKH |
538 | pcmcia_align(void *align_data, struct resource *res, resource_size_t size, |
539 | resource_size_t align) | |
1da177e4 LT |
540 | { |
541 | struct pcmcia_align_data *data = align_data; | |
542 | struct resource_map *m; | |
543 | ||
544 | pcmcia_common_align(data, res, size, align); | |
545 | ||
546 | for (m = data->map->next; m != data->map; m = m->next) { | |
547 | unsigned long start = m->base; | |
548 | unsigned long end = m->base + m->num - 1; | |
549 | ||
550 | /* | |
551 | * If the lower resources are not available, try aligning | |
552 | * to this entry of the resource database to see if it'll | |
553 | * fit here. | |
554 | */ | |
555 | if (res->start < start) { | |
556 | res->start = start; | |
557 | pcmcia_common_align(data, res, size, align); | |
558 | } | |
559 | ||
560 | /* | |
561 | * If we're above the area which was passed in, there's | |
562 | * no point proceeding. | |
563 | */ | |
564 | if (res->start >= res->end) | |
565 | break; | |
566 | ||
567 | if ((res->start + size - 1) <= end) | |
568 | break; | |
569 | } | |
570 | ||
571 | /* | |
572 | * If we failed to find something suitable, ensure we fail. | |
573 | */ | |
574 | if (m == data->map) | |
575 | res->start = res->end; | |
576 | } | |
577 | ||
578 | /* | |
579 | * Adjust an existing IO region allocation, but making sure that we don't | |
580 | * encroach outside the resources which the user supplied. | |
581 | */ | |
582 | static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, | |
583 | unsigned long r_end, struct pcmcia_socket *s) | |
584 | { | |
585 | struct resource_map *m; | |
586 | struct socket_data *s_data = s->resource_data; | |
587 | int ret = -ENOMEM; | |
588 | ||
7fe908dd | 589 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
590 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { |
591 | unsigned long start = m->base; | |
592 | unsigned long end = m->base + m->num - 1; | |
593 | ||
594 | if (start > r_start || r_end > end) | |
595 | continue; | |
596 | ||
597 | ret = adjust_resource(res, r_start, r_end - r_start + 1); | |
598 | break; | |
599 | } | |
7fe908dd | 600 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
601 | |
602 | return ret; | |
603 | } | |
604 | ||
605 | /*====================================================================== | |
606 | ||
607 | These find ranges of I/O ports or memory addresses that are not | |
608 | currently allocated by other devices. | |
609 | ||
610 | The 'align' field should reflect the number of bits of address | |
611 | that need to be preserved from the initial value of *base. It | |
612 | should be a power of two, greater than or equal to 'num'. A value | |
613 | of 0 means that all bits of *base are significant. *base should | |
614 | also be strictly less than 'align'. | |
615 | ||
616 | ======================================================================*/ | |
617 | ||
e94e15f7 | 618 | static struct resource *nonstatic_find_io_region(unsigned long base, int num, |
1da177e4 LT |
619 | unsigned long align, struct pcmcia_socket *s) |
620 | { | |
87373318 | 621 | struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.bus_id); |
1da177e4 LT |
622 | struct socket_data *s_data = s->resource_data; |
623 | struct pcmcia_align_data data; | |
624 | unsigned long min = base; | |
625 | int ret; | |
626 | ||
627 | if (align == 0) | |
628 | align = 0x10000; | |
629 | ||
630 | data.mask = align - 1; | |
631 | data.offset = base & data.mask; | |
632 | data.map = &s_data->io_db; | |
633 | ||
7fe908dd | 634 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
635 | #ifdef CONFIG_PCI |
636 | if (s->cb_dev) { | |
637 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
638 | min, 0, pcmcia_align, &data); | |
639 | } else | |
640 | #endif | |
641 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
642 | 1, pcmcia_align, &data); | |
7fe908dd | 643 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
644 | |
645 | if (ret != 0) { | |
646 | kfree(res); | |
647 | res = NULL; | |
648 | } | |
649 | return res; | |
650 | } | |
651 | ||
e94e15f7 DB |
652 | static struct resource * nonstatic_find_mem_region(u_long base, u_long num, |
653 | u_long align, int low, struct pcmcia_socket *s) | |
1da177e4 | 654 | { |
87373318 | 655 | struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.bus_id); |
1da177e4 LT |
656 | struct socket_data *s_data = s->resource_data; |
657 | struct pcmcia_align_data data; | |
658 | unsigned long min, max; | |
659 | int ret, i; | |
660 | ||
661 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
662 | ||
663 | data.mask = align - 1; | |
664 | data.offset = base & data.mask; | |
665 | data.map = &s_data->mem_db; | |
666 | ||
667 | for (i = 0; i < 2; i++) { | |
668 | if (low) { | |
669 | max = 0x100000UL; | |
670 | min = base < max ? base : 0; | |
671 | } else { | |
672 | max = ~0UL; | |
673 | min = 0x100000UL + base; | |
674 | } | |
675 | ||
7fe908dd | 676 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
677 | #ifdef CONFIG_PCI |
678 | if (s->cb_dev) { | |
679 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, | |
680 | 1, min, 0, | |
681 | pcmcia_align, &data); | |
682 | } else | |
683 | #endif | |
684 | ret = allocate_resource(&iomem_resource, res, num, min, | |
685 | max, 1, pcmcia_align, &data); | |
7fe908dd | 686 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
687 | if (ret == 0 || low) |
688 | break; | |
689 | low = 1; | |
690 | } | |
691 | ||
692 | if (ret != 0) { | |
693 | kfree(res); | |
694 | res = NULL; | |
695 | } | |
696 | return res; | |
697 | } | |
698 | ||
699 | ||
22916638 | 700 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 701 | { |
1da177e4 | 702 | struct socket_data *data = s->resource_data; |
22916638 DB |
703 | unsigned long size = end - start + 1; |
704 | int ret = 0; | |
1da177e4 | 705 | |
1146bc74 | 706 | if (end < start) |
22916638 | 707 | return -EINVAL; |
1da177e4 | 708 | |
7fe908dd | 709 | mutex_lock(&rsrc_mutex); |
22916638 | 710 | switch (action) { |
1da177e4 | 711 | case ADD_MANAGED_RESOURCE: |
22916638 | 712 | ret = add_interval(&data->mem_db, start, size); |
1da177e4 LT |
713 | break; |
714 | case REMOVE_MANAGED_RESOURCE: | |
22916638 DB |
715 | ret = sub_interval(&data->mem_db, start, size); |
716 | if (!ret) { | |
1da177e4 LT |
717 | struct pcmcia_socket *socket; |
718 | down_read(&pcmcia_socket_list_rwsem); | |
719 | list_for_each_entry(socket, &pcmcia_socket_list, socket_list) | |
720 | release_cis_mem(socket); | |
721 | up_read(&pcmcia_socket_list_rwsem); | |
722 | } | |
723 | break; | |
724 | default: | |
22916638 | 725 | ret = -EINVAL; |
1da177e4 | 726 | } |
7fe908dd | 727 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
728 | |
729 | return ret; | |
730 | } | |
731 | ||
732 | ||
22916638 | 733 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
734 | { |
735 | struct socket_data *data = s->resource_data; | |
22916638 DB |
736 | unsigned long size = end - start + 1; |
737 | int ret = 0; | |
1da177e4 | 738 | |
1146bc74 | 739 | if (end < start) |
22916638 DB |
740 | return -EINVAL; |
741 | ||
742 | if (end > IO_SPACE_LIMIT) | |
743 | return -EINVAL; | |
1da177e4 | 744 | |
7fe908dd | 745 | mutex_lock(&rsrc_mutex); |
22916638 | 746 | switch (action) { |
1da177e4 | 747 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
748 | if (add_interval(&data->io_db, start, size) != 0) { |
749 | ret = -EBUSY; | |
1da177e4 LT |
750 | break; |
751 | } | |
752 | #ifdef CONFIG_PCMCIA_PROBE | |
753 | if (probe_io) | |
22916638 | 754 | do_io_probe(s, start, size); |
1da177e4 LT |
755 | #endif |
756 | break; | |
757 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 758 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
759 | break; |
760 | default: | |
22916638 | 761 | ret = -EINVAL; |
1da177e4 LT |
762 | break; |
763 | } | |
7fe908dd | 764 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
765 | |
766 | return ret; | |
767 | } | |
768 | ||
769 | ||
3c29976a DB |
770 | #ifdef CONFIG_PCI |
771 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
772 | { | |
773 | struct resource *res; | |
774 | int i, done = 0; | |
775 | ||
776 | if (!s->cb_dev || !s->cb_dev->bus) | |
777 | return -ENODEV; | |
778 | ||
0d078f6f | 779 | #if defined(CONFIG_X86) |
b6d00f0d DB |
780 | /* If this is the root bus, the risk of hitting |
781 | * some strange system devices which aren't protected | |
782 | * by either ACPI resource tables or properly requested | |
783 | * resources is too big. Therefore, don't do auto-adding | |
784 | * of resources at the moment. | |
785 | */ | |
786 | if (s->cb_dev->bus->number == 0) | |
787 | return -EINVAL; | |
788 | #endif | |
789 | ||
3c29976a DB |
790 | for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) { |
791 | res = s->cb_dev->bus->resource[i]; | |
792 | if (!res) | |
793 | continue; | |
794 | ||
795 | if (res->flags & IORESOURCE_IO) { | |
796 | if (res == &ioport_resource) | |
797 | continue; | |
dbe4ea5f DB |
798 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
799 | "pcmcia: parent PCI bridge I/O " | |
800 | "window: 0x%llx - 0x%llx\n", | |
801 | (unsigned long long)res->start, | |
802 | (unsigned long long)res->end); | |
3c29976a DB |
803 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
804 | done |= IORESOURCE_IO; | |
805 | ||
806 | } | |
807 | ||
808 | if (res->flags & IORESOURCE_MEM) { | |
809 | if (res == &iomem_resource) | |
810 | continue; | |
dbe4ea5f DB |
811 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
812 | "pcmcia: parent PCI bridge Memory " | |
813 | "window: 0x%llx - 0x%llx\n", | |
814 | (unsigned long long)res->start, | |
815 | (unsigned long long)res->end); | |
3c29976a DB |
816 | if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
817 | done |= IORESOURCE_MEM; | |
818 | } | |
819 | } | |
820 | ||
821 | /* if we got at least one of IO, and one of MEM, we can be glad and | |
822 | * activate the PCMCIA subsystem */ | |
54bb5675 | 823 | if (done == (IORESOURCE_MEM | IORESOURCE_IO)) |
3c29976a DB |
824 | s->resource_setup_done = 1; |
825 | ||
826 | return 0; | |
827 | } | |
828 | ||
829 | #else | |
830 | ||
831 | static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
832 | { | |
833 | return -ENODEV; | |
834 | } | |
835 | ||
836 | #endif | |
837 | ||
838 | ||
1da177e4 LT |
839 | static int nonstatic_init(struct pcmcia_socket *s) |
840 | { | |
841 | struct socket_data *data; | |
842 | ||
8084b372 | 843 | data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); |
1da177e4 LT |
844 | if (!data) |
845 | return -ENOMEM; | |
1da177e4 LT |
846 | |
847 | data->mem_db.next = &data->mem_db; | |
848 | data->io_db.next = &data->io_db; | |
849 | ||
850 | s->resource_data = (void *) data; | |
851 | ||
3c29976a DB |
852 | nonstatic_autoadd_resources(s); |
853 | ||
1da177e4 LT |
854 | return 0; |
855 | } | |
856 | ||
857 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
858 | { | |
859 | struct socket_data *data = s->resource_data; | |
860 | struct resource_map *p, *q; | |
861 | ||
7fe908dd | 862 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
863 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { |
864 | q = p->next; | |
865 | kfree(p); | |
866 | } | |
867 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
868 | q = p->next; | |
869 | kfree(p); | |
870 | } | |
7fe908dd | 871 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
872 | } |
873 | ||
874 | ||
875 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
876 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
877 | .adjust_io_region = nonstatic_adjust_io_region, | |
878 | .find_io = nonstatic_find_io_region, | |
879 | .find_mem = nonstatic_find_mem_region, | |
c5023801 DB |
880 | .add_io = adjust_io, |
881 | .add_mem = adjust_memory, | |
1da177e4 LT |
882 | .init = nonstatic_init, |
883 | .exit = nonstatic_release_resource_db, | |
884 | }; | |
885 | EXPORT_SYMBOL(pccard_nonstatic_ops); | |
886 | ||
887 | ||
888 | /* sysfs interface to the resource database */ | |
889 | ||
87373318 GKH |
890 | static ssize_t show_io_db(struct device *dev, |
891 | struct device_attribute *attr, char *buf) | |
1da177e4 | 892 | { |
87373318 | 893 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
894 | struct socket_data *data; |
895 | struct resource_map *p; | |
896 | ssize_t ret = 0; | |
897 | ||
7fe908dd | 898 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
899 | data = s->resource_data; |
900 | ||
901 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
902 | if (ret > (PAGE_SIZE - 10)) | |
903 | continue; | |
904 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
905 | "0x%08lx - 0x%08lx\n", | |
906 | ((unsigned long) p->base), | |
907 | ((unsigned long) p->base + p->num - 1)); | |
908 | } | |
909 | ||
7fe908dd | 910 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
911 | return (ret); |
912 | } | |
913 | ||
87373318 GKH |
914 | static ssize_t store_io_db(struct device *dev, |
915 | struct device_attribute *attr, | |
916 | const char *buf, size_t count) | |
1da177e4 | 917 | { |
87373318 | 918 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 919 | unsigned long start_addr, end_addr; |
22916638 | 920 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
921 | ssize_t ret = 0; |
922 | ||
923 | ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); | |
924 | if (ret != 2) { | |
925 | ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 926 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 LT |
927 | if (ret != 2) { |
928 | ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 929 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
930 | if (ret != 2) |
931 | return -EINVAL; | |
932 | } | |
933 | } | |
1146bc74 | 934 | if (end_addr < start_addr) |
1da177e4 LT |
935 | return -EINVAL; |
936 | ||
22916638 | 937 | ret = adjust_io(s, add, start_addr, end_addr); |
3c29976a DB |
938 | if (!ret) |
939 | s->resource_setup_new = 1; | |
1da177e4 LT |
940 | |
941 | return ret ? ret : count; | |
942 | } | |
87373318 | 943 | static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); |
1da177e4 | 944 | |
87373318 GKH |
945 | static ssize_t show_mem_db(struct device *dev, |
946 | struct device_attribute *attr, char *buf) | |
1da177e4 | 947 | { |
87373318 | 948 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
949 | struct socket_data *data; |
950 | struct resource_map *p; | |
951 | ssize_t ret = 0; | |
952 | ||
7fe908dd | 953 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
954 | data = s->resource_data; |
955 | ||
956 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { | |
957 | if (ret > (PAGE_SIZE - 10)) | |
958 | continue; | |
959 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
960 | "0x%08lx - 0x%08lx\n", | |
961 | ((unsigned long) p->base), | |
962 | ((unsigned long) p->base + p->num - 1)); | |
963 | } | |
964 | ||
7fe908dd | 965 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
966 | return (ret); |
967 | } | |
968 | ||
87373318 GKH |
969 | static ssize_t store_mem_db(struct device *dev, |
970 | struct device_attribute *attr, | |
971 | const char *buf, size_t count) | |
1da177e4 | 972 | { |
87373318 | 973 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 974 | unsigned long start_addr, end_addr; |
22916638 | 975 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
976 | ssize_t ret = 0; |
977 | ||
978 | ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); | |
979 | if (ret != 2) { | |
980 | ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 981 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 LT |
982 | if (ret != 2) { |
983 | ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 984 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
985 | if (ret != 2) |
986 | return -EINVAL; | |
987 | } | |
988 | } | |
1146bc74 | 989 | if (end_addr < start_addr) |
1da177e4 LT |
990 | return -EINVAL; |
991 | ||
22916638 | 992 | ret = adjust_memory(s, add, start_addr, end_addr); |
3c29976a DB |
993 | if (!ret) |
994 | s->resource_setup_new = 1; | |
1da177e4 LT |
995 | |
996 | return ret ? ret : count; | |
997 | } | |
87373318 | 998 | static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); |
1da177e4 | 999 | |
7d578961 DB |
1000 | static struct attribute *pccard_rsrc_attributes[] = { |
1001 | &dev_attr_available_resources_io.attr, | |
1002 | &dev_attr_available_resources_mem.attr, | |
1da177e4 LT |
1003 | NULL, |
1004 | }; | |
1005 | ||
7d578961 DB |
1006 | static const struct attribute_group rsrc_attributes = { |
1007 | .attrs = pccard_rsrc_attributes, | |
1008 | }; | |
1009 | ||
87373318 | 1010 | static int __devinit pccard_sysfs_add_rsrc(struct device *dev, |
d8539d81 | 1011 | struct class_interface *class_intf) |
1da177e4 | 1012 | { |
87373318 | 1013 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
7d578961 | 1014 | |
1da177e4 LT |
1015 | if (s->resource_ops != &pccard_nonstatic_ops) |
1016 | return 0; | |
7d578961 | 1017 | return sysfs_create_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1018 | } |
1019 | ||
87373318 | 1020 | static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, |
d8539d81 | 1021 | struct class_interface *class_intf) |
1da177e4 | 1022 | { |
87373318 | 1023 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1024 | |
1025 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1026 | return; | |
7d578961 | 1027 | sysfs_remove_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1028 | } |
1029 | ||
ed49f5d0 | 1030 | static struct class_interface pccard_rsrc_interface __refdata = { |
1da177e4 | 1031 | .class = &pcmcia_socket_class, |
87373318 GKH |
1032 | .add_dev = &pccard_sysfs_add_rsrc, |
1033 | .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), | |
1da177e4 LT |
1034 | }; |
1035 | ||
1036 | static int __init nonstatic_sysfs_init(void) | |
1037 | { | |
1038 | return class_interface_register(&pccard_rsrc_interface); | |
1039 | } | |
1040 | ||
1041 | static void __exit nonstatic_sysfs_exit(void) | |
1042 | { | |
1043 | class_interface_unregister(&pccard_rsrc_interface); | |
1044 | } | |
1045 | ||
1046 | module_init(nonstatic_sysfs_init); | |
1047 | module_exit(nonstatic_sysfs_exit); |