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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 | { | |
1168386a | 125 | struct resource_map *p, *q; |
1da177e4 | 126 | |
1168386a DB |
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) { | |
135 | printk(KERN_WARNING "out of memory to update resources\n"); | |
136 | return -ENOMEM; | |
137 | } | |
138 | q->base = base; q->num = num; | |
139 | q->next = p->next; p->next = q; | |
140 | return 0; | |
1da177e4 LT |
141 | } |
142 | ||
143 | /*====================================================================*/ | |
144 | ||
145 | static int sub_interval(struct resource_map *map, u_long base, u_long num) | |
146 | { | |
147 | struct resource_map *p, *q; | |
148 | ||
149 | for (p = map; ; p = q) { | |
150 | q = p->next; | |
151 | if (q == map) | |
152 | break; | |
153 | if ((q->base+q->num > base) && (base+num > q->base)) { | |
154 | if (q->base >= base) { | |
155 | if (q->base+q->num <= base+num) { | |
156 | /* Delete whole block */ | |
157 | p->next = q->next; | |
158 | kfree(q); | |
159 | /* don't advance the pointer yet */ | |
160 | q = p; | |
161 | } else { | |
162 | /* Cut off bit from the front */ | |
163 | q->num = q->base + q->num - base - num; | |
164 | q->base = base + num; | |
165 | } | |
166 | } else if (q->base+q->num <= base+num) { | |
167 | /* Cut off bit from the end */ | |
168 | q->num = base - q->base; | |
169 | } else { | |
170 | /* Split the block into two pieces */ | |
171 | p = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
1168386a DB |
172 | if (!p) { |
173 | printk(KERN_WARNING "out of memory to update resources\n"); | |
174 | return -ENOMEM; | |
175 | } | |
1da177e4 LT |
176 | p->base = base+num; |
177 | p->num = q->base+q->num - p->base; | |
178 | q->num = base - q->base; | |
179 | p->next = q->next ; q->next = p; | |
180 | } | |
181 | } | |
182 | } | |
4c89e88b | 183 | return 0; |
1da177e4 LT |
184 | } |
185 | ||
186 | /*====================================================================== | |
187 | ||
188 | These routines examine a region of IO or memory addresses to | |
189 | determine what ranges might be genuinely available. | |
190 | ||
191 | ======================================================================*/ | |
192 | ||
193 | #ifdef CONFIG_PCMCIA_PROBE | |
906da809 OJ |
194 | static void do_io_probe(struct pcmcia_socket *s, unsigned int base, |
195 | unsigned int num) | |
1da177e4 LT |
196 | { |
197 | struct resource *res; | |
198 | struct socket_data *s_data = s->resource_data; | |
906da809 | 199 | unsigned int i, j, bad; |
1da177e4 LT |
200 | int any; |
201 | u_char *b, hole, most; | |
202 | ||
dbe4ea5f DB |
203 | dev_printk(KERN_INFO, &s->dev, "cs: IO port probe %#x-%#x:", |
204 | base, base+num-1); | |
1da177e4 LT |
205 | |
206 | /* First, what does a floating port look like? */ | |
8084b372 | 207 | b = kzalloc(256, GFP_KERNEL); |
1da177e4 | 208 | if (!b) { |
dbe4ea5f DB |
209 | dev_printk(KERN_ERR, &s->dev, |
210 | "do_io_probe: unable to kmalloc 256 bytes"); | |
1da177e4 LT |
211 | return; |
212 | } | |
1da177e4 LT |
213 | for (i = base, most = 0; i < base+num; i += 8) { |
214 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
215 | if (!res) | |
216 | continue; | |
217 | hole = inb(i); | |
218 | for (j = 1; j < 8; j++) | |
219 | if (inb(i+j) != hole) break; | |
220 | free_region(res); | |
221 | if ((j == 8) && (++b[hole] > b[most])) | |
222 | most = hole; | |
223 | if (b[most] == 127) break; | |
224 | } | |
225 | kfree(b); | |
226 | ||
227 | bad = any = 0; | |
228 | for (i = base; i < base+num; i += 8) { | |
229 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
230 | if (!res) | |
231 | continue; | |
232 | for (j = 0; j < 8; j++) | |
233 | if (inb(i+j) != most) break; | |
234 | free_region(res); | |
235 | if (j < 8) { | |
236 | if (!any) | |
237 | printk(" excluding"); | |
238 | if (!bad) | |
239 | bad = any = i; | |
240 | } else { | |
241 | if (bad) { | |
242 | sub_interval(&s_data->io_db, bad, i-bad); | |
906da809 | 243 | printk(" %#x-%#x", bad, i-1); |
1da177e4 LT |
244 | bad = 0; |
245 | } | |
246 | } | |
247 | } | |
248 | if (bad) { | |
249 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
250 | printk(" nothing: probe failed.\n"); | |
251 | return; | |
252 | } else { | |
253 | sub_interval(&s_data->io_db, bad, i-bad); | |
906da809 | 254 | printk(" %#x-%#x", bad, i-1); |
1da177e4 LT |
255 | } |
256 | } | |
257 | ||
258 | printk(any ? "\n" : " clean.\n"); | |
259 | } | |
260 | #endif | |
261 | ||
262 | /*====================================================================== | |
263 | ||
264 | This is tricky... when we set up CIS memory, we try to validate | |
265 | the memory window space allocations. | |
266 | ||
267 | ======================================================================*/ | |
268 | ||
269 | /* Validation function for cards with a valid CIS */ | |
c5081d5f DB |
270 | static int readable(struct pcmcia_socket *s, struct resource *res, |
271 | unsigned int *count) | |
1da177e4 LT |
272 | { |
273 | int ret = -1; | |
274 | ||
275 | s->cis_mem.res = res; | |
276 | s->cis_virt = ioremap(res->start, s->map_size); | |
277 | if (s->cis_virt) { | |
c5081d5f | 278 | ret = pccard_validate_cis(s, BIND_FN_ALL, count); |
1da177e4 LT |
279 | /* invalidate mapping and CIS cache */ |
280 | iounmap(s->cis_virt); | |
281 | s->cis_virt = NULL; | |
282 | destroy_cis_cache(s); | |
283 | } | |
284 | s->cis_mem.res = NULL; | |
0e09c863 | 285 | if ((ret != 0) || (*count == 0)) |
1da177e4 LT |
286 | return 0; |
287 | return 1; | |
288 | } | |
289 | ||
290 | /* Validation function for simple memory cards */ | |
291 | static int checksum(struct pcmcia_socket *s, struct resource *res) | |
292 | { | |
293 | pccard_mem_map map; | |
294 | int i, a = 0, b = -1, d; | |
295 | void __iomem *virt; | |
296 | ||
297 | virt = ioremap(res->start, s->map_size); | |
298 | if (virt) { | |
299 | map.map = 0; | |
300 | map.flags = MAP_ACTIVE; | |
301 | map.speed = 0; | |
302 | map.res = res; | |
303 | map.card_start = 0; | |
304 | s->ops->set_mem_map(s, &map); | |
305 | ||
306 | /* Don't bother checking every word... */ | |
307 | for (i = 0; i < s->map_size; i += 44) { | |
308 | d = readl(virt+i); | |
309 | a += d; | |
310 | b &= d; | |
311 | } | |
312 | ||
313 | map.flags = 0; | |
314 | s->ops->set_mem_map(s, &map); | |
315 | ||
316 | iounmap(virt); | |
317 | } | |
318 | ||
319 | return (b == -1) ? -1 : (a>>1); | |
320 | } | |
321 | ||
322 | static int | |
323 | cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
324 | { | |
325 | struct resource *res1, *res2; | |
c5081d5f | 326 | unsigned int info1, info2; |
1da177e4 LT |
327 | int ret = 0; |
328 | ||
329 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
330 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
331 | ||
332 | if (res1 && res2) { | |
333 | ret = readable(s, res1, &info1); | |
334 | ret += readable(s, res2, &info2); | |
335 | } | |
336 | ||
337 | free_region(res2); | |
338 | free_region(res1); | |
339 | ||
c5081d5f | 340 | return (ret == 2) && (info1 == info2); |
1da177e4 LT |
341 | } |
342 | ||
343 | static int | |
344 | checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
345 | { | |
346 | struct resource *res1, *res2; | |
347 | int a = -1, b = -1; | |
348 | ||
349 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
350 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
351 | ||
352 | if (res1 && res2) { | |
353 | a = checksum(s, res1); | |
354 | b = checksum(s, res2); | |
355 | } | |
356 | ||
357 | free_region(res2); | |
358 | free_region(res1); | |
359 | ||
360 | return (a == b) && (a >= 0); | |
361 | } | |
362 | ||
363 | /*====================================================================== | |
364 | ||
365 | The memory probe. If the memory list includes a 64K-aligned block | |
366 | below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
367 | least mem_limit free space, we quit. | |
368 | ||
369 | ======================================================================*/ | |
370 | ||
371 | static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) | |
372 | { | |
373 | struct socket_data *s_data = s->resource_data; | |
374 | u_long i, j, bad, fail, step; | |
375 | ||
dbe4ea5f DB |
376 | dev_printk(KERN_INFO, &s->dev, "cs: memory probe 0x%06lx-0x%06lx:", |
377 | base, base+num-1); | |
1da177e4 LT |
378 | bad = fail = 0; |
379 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
2ad0a0a7 DB |
380 | /* don't allow too large steps */ |
381 | if (step > 0x800000) | |
382 | step = 0x800000; | |
1da177e4 LT |
383 | /* cis_readable wants to map 2x map_size */ |
384 | if (step < 2 * s->map_size) | |
385 | step = 2 * s->map_size; | |
386 | for (i = j = base; i < base+num; i = j + step) { | |
387 | if (!fail) { | |
388 | for (j = i; j < base+num; j += step) { | |
389 | if (cis_readable(s, j, step)) | |
390 | break; | |
391 | } | |
392 | fail = ((i == base) && (j == base+num)); | |
393 | } | |
394 | if (fail) { | |
395 | for (j = i; j < base+num; j += 2*step) | |
396 | if (checksum_match(s, j, step) && | |
397 | checksum_match(s, j + step, step)) | |
398 | break; | |
399 | } | |
400 | if (i != j) { | |
401 | if (!bad) printk(" excluding"); | |
402 | printk(" %#05lx-%#05lx", i, j-1); | |
403 | sub_interval(&s_data->mem_db, i, j-i); | |
404 | bad += j-i; | |
405 | } | |
406 | } | |
407 | printk(bad ? "\n" : " clean.\n"); | |
408 | return (num - bad); | |
409 | } | |
410 | ||
411 | #ifdef CONFIG_PCMCIA_PROBE | |
412 | ||
413 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) | |
414 | { | |
de75914e DB |
415 | struct socket_data *s_data = s->resource_data; |
416 | u_long ok; | |
417 | if (m == &s_data->mem_db) | |
418 | return 0; | |
419 | ok = inv_probe(m->next, s); | |
420 | if (ok) { | |
421 | if (m->base >= 0x100000) | |
422 | sub_interval(&s_data->mem_db, m->base, m->num); | |
423 | return ok; | |
424 | } | |
425 | if (m->base < 0x100000) | |
426 | return 0; | |
427 | return do_mem_probe(m->base, m->num, s); | |
1da177e4 LT |
428 | } |
429 | ||
de75914e | 430 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 431 | { |
de75914e DB |
432 | struct resource_map *m, mm; |
433 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
434 | unsigned long b, i, ok = 0; | |
435 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 436 | |
de75914e DB |
437 | /* We do up to four passes through the list */ |
438 | if (probe_mask & MEM_PROBE_HIGH) { | |
439 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
440 | return 0; | |
dbe4ea5f DB |
441 | dev_printk(KERN_NOTICE, &s->dev, |
442 | "cs: warning: no high memory space available!\n"); | |
de75914e | 443 | return -ENODEV; |
1da177e4 | 444 | } |
de75914e DB |
445 | |
446 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
447 | mm = *m; | |
448 | /* Only probe < 1 MB */ | |
449 | if (mm.base >= 0x100000) | |
450 | continue; | |
451 | if ((mm.base | mm.num) & 0xffff) { | |
452 | ok += do_mem_probe(mm.base, mm.num, s); | |
453 | continue; | |
454 | } | |
455 | /* Special probe for 64K-aligned block */ | |
456 | for (i = 0; i < 4; i++) { | |
457 | b = order[i] << 12; | |
458 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
459 | if (ok >= mem_limit) | |
460 | sub_interval(&s_data->mem_db, b, 0x10000); | |
461 | else | |
462 | ok += do_mem_probe(b, 0x10000, s); | |
463 | } | |
464 | } | |
1da177e4 | 465 | } |
de75914e DB |
466 | |
467 | if (ok > 0) | |
468 | return 0; | |
469 | ||
470 | return -ENODEV; | |
1da177e4 LT |
471 | } |
472 | ||
473 | #else /* CONFIG_PCMCIA_PROBE */ | |
474 | ||
2cff9447 | 475 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 LT |
476 | { |
477 | struct resource_map *m, mm; | |
478 | struct socket_data *s_data = s->resource_data; | |
2cff9447 | 479 | unsigned long ok = 0; |
1da177e4 LT |
480 | |
481 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
482 | mm = *m; | |
2cff9447 | 483 | ok += do_mem_probe(mm.base, mm.num, s); |
1da177e4 | 484 | } |
2cff9447 AM |
485 | if (ok > 0) |
486 | return 0; | |
487 | return -ENODEV; | |
1da177e4 LT |
488 | } |
489 | ||
490 | #endif /* CONFIG_PCMCIA_PROBE */ | |
491 | ||
492 | ||
493 | /* | |
7fe908dd | 494 | * Locking note: Must be called with skt_mutex held! |
1da177e4 | 495 | */ |
de75914e | 496 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
497 | { |
498 | struct socket_data *s_data = s->resource_data; | |
de75914e DB |
499 | unsigned int probe_mask = MEM_PROBE_LOW; |
500 | int ret = 0; | |
501 | ||
502 | if (!probe_mem) | |
503 | return 0; | |
1da177e4 | 504 | |
7fe908dd | 505 | mutex_lock(&rsrc_mutex); |
1da177e4 | 506 | |
de75914e DB |
507 | if (s->features & SS_CAP_PAGE_REGS) |
508 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 509 | |
de75914e DB |
510 | if (probe_mask & ~s_data->rsrc_mem_probe) { |
511 | if (s->state & SOCKET_PRESENT) | |
512 | ret = validate_mem(s, probe_mask); | |
513 | if (!ret) | |
1da177e4 | 514 | s_data->rsrc_mem_probe |= probe_mask; |
de75914e | 515 | } |
1da177e4 | 516 | |
7fe908dd | 517 | mutex_unlock(&rsrc_mutex); |
1da177e4 | 518 | |
de75914e | 519 | return ret; |
1da177e4 LT |
520 | } |
521 | ||
522 | struct pcmcia_align_data { | |
523 | unsigned long mask; | |
524 | unsigned long offset; | |
525 | struct resource_map *map; | |
526 | }; | |
527 | ||
528 | static void | |
529 | pcmcia_common_align(void *align_data, struct resource *res, | |
2427ddd8 | 530 | resource_size_t size, resource_size_t align) |
1da177e4 LT |
531 | { |
532 | struct pcmcia_align_data *data = align_data; | |
2427ddd8 | 533 | resource_size_t start; |
1da177e4 LT |
534 | /* |
535 | * Ensure that we have the correct start address | |
536 | */ | |
537 | start = (res->start & ~data->mask) + data->offset; | |
538 | if (start < res->start) | |
539 | start += data->mask + 1; | |
540 | res->start = start; | |
541 | } | |
542 | ||
543 | static void | |
2427ddd8 GKH |
544 | pcmcia_align(void *align_data, struct resource *res, resource_size_t size, |
545 | resource_size_t align) | |
1da177e4 LT |
546 | { |
547 | struct pcmcia_align_data *data = align_data; | |
548 | struct resource_map *m; | |
549 | ||
550 | pcmcia_common_align(data, res, size, align); | |
551 | ||
552 | for (m = data->map->next; m != data->map; m = m->next) { | |
553 | unsigned long start = m->base; | |
554 | unsigned long end = m->base + m->num - 1; | |
555 | ||
556 | /* | |
557 | * If the lower resources are not available, try aligning | |
558 | * to this entry of the resource database to see if it'll | |
559 | * fit here. | |
560 | */ | |
561 | if (res->start < start) { | |
562 | res->start = start; | |
563 | pcmcia_common_align(data, res, size, align); | |
564 | } | |
565 | ||
566 | /* | |
567 | * If we're above the area which was passed in, there's | |
568 | * no point proceeding. | |
569 | */ | |
570 | if (res->start >= res->end) | |
571 | break; | |
572 | ||
573 | if ((res->start + size - 1) <= end) | |
574 | break; | |
575 | } | |
576 | ||
577 | /* | |
578 | * If we failed to find something suitable, ensure we fail. | |
579 | */ | |
580 | if (m == data->map) | |
581 | res->start = res->end; | |
582 | } | |
583 | ||
584 | /* | |
585 | * Adjust an existing IO region allocation, but making sure that we don't | |
586 | * encroach outside the resources which the user supplied. | |
587 | */ | |
588 | static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, | |
589 | unsigned long r_end, struct pcmcia_socket *s) | |
590 | { | |
591 | struct resource_map *m; | |
592 | struct socket_data *s_data = s->resource_data; | |
593 | int ret = -ENOMEM; | |
594 | ||
7fe908dd | 595 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
596 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { |
597 | unsigned long start = m->base; | |
598 | unsigned long end = m->base + m->num - 1; | |
599 | ||
600 | if (start > r_start || r_end > end) | |
601 | continue; | |
602 | ||
603 | ret = adjust_resource(res, r_start, r_end - r_start + 1); | |
604 | break; | |
605 | } | |
7fe908dd | 606 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
607 | |
608 | return ret; | |
609 | } | |
610 | ||
611 | /*====================================================================== | |
612 | ||
613 | These find ranges of I/O ports or memory addresses that are not | |
614 | currently allocated by other devices. | |
615 | ||
616 | The 'align' field should reflect the number of bits of address | |
617 | that need to be preserved from the initial value of *base. It | |
618 | should be a power of two, greater than or equal to 'num'. A value | |
619 | of 0 means that all bits of *base are significant. *base should | |
620 | also be strictly less than 'align'. | |
621 | ||
622 | ======================================================================*/ | |
623 | ||
e94e15f7 | 624 | static struct resource *nonstatic_find_io_region(unsigned long base, int num, |
1da177e4 LT |
625 | unsigned long align, struct pcmcia_socket *s) |
626 | { | |
87373318 | 627 | struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.bus_id); |
1da177e4 LT |
628 | struct socket_data *s_data = s->resource_data; |
629 | struct pcmcia_align_data data; | |
630 | unsigned long min = base; | |
631 | int ret; | |
632 | ||
633 | if (align == 0) | |
634 | align = 0x10000; | |
635 | ||
636 | data.mask = align - 1; | |
637 | data.offset = base & data.mask; | |
638 | data.map = &s_data->io_db; | |
639 | ||
7fe908dd | 640 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
641 | #ifdef CONFIG_PCI |
642 | if (s->cb_dev) { | |
643 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
644 | min, 0, pcmcia_align, &data); | |
645 | } else | |
646 | #endif | |
647 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
648 | 1, pcmcia_align, &data); | |
7fe908dd | 649 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
650 | |
651 | if (ret != 0) { | |
652 | kfree(res); | |
653 | res = NULL; | |
654 | } | |
655 | return res; | |
656 | } | |
657 | ||
e94e15f7 DB |
658 | static struct resource * nonstatic_find_mem_region(u_long base, u_long num, |
659 | u_long align, int low, struct pcmcia_socket *s) | |
1da177e4 | 660 | { |
87373318 | 661 | struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.bus_id); |
1da177e4 LT |
662 | struct socket_data *s_data = s->resource_data; |
663 | struct pcmcia_align_data data; | |
664 | unsigned long min, max; | |
665 | int ret, i; | |
666 | ||
667 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
668 | ||
669 | data.mask = align - 1; | |
670 | data.offset = base & data.mask; | |
671 | data.map = &s_data->mem_db; | |
672 | ||
673 | for (i = 0; i < 2; i++) { | |
674 | if (low) { | |
675 | max = 0x100000UL; | |
676 | min = base < max ? base : 0; | |
677 | } else { | |
678 | max = ~0UL; | |
679 | min = 0x100000UL + base; | |
680 | } | |
681 | ||
7fe908dd | 682 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
683 | #ifdef CONFIG_PCI |
684 | if (s->cb_dev) { | |
685 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, | |
686 | 1, min, 0, | |
687 | pcmcia_align, &data); | |
688 | } else | |
689 | #endif | |
690 | ret = allocate_resource(&iomem_resource, res, num, min, | |
691 | max, 1, pcmcia_align, &data); | |
7fe908dd | 692 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
693 | if (ret == 0 || low) |
694 | break; | |
695 | low = 1; | |
696 | } | |
697 | ||
698 | if (ret != 0) { | |
699 | kfree(res); | |
700 | res = NULL; | |
701 | } | |
702 | return res; | |
703 | } | |
704 | ||
705 | ||
22916638 | 706 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 707 | { |
1da177e4 | 708 | struct socket_data *data = s->resource_data; |
22916638 DB |
709 | unsigned long size = end - start + 1; |
710 | int ret = 0; | |
1da177e4 | 711 | |
1146bc74 | 712 | if (end < start) |
22916638 | 713 | return -EINVAL; |
1da177e4 | 714 | |
7fe908dd | 715 | mutex_lock(&rsrc_mutex); |
22916638 | 716 | switch (action) { |
1da177e4 | 717 | case ADD_MANAGED_RESOURCE: |
22916638 | 718 | ret = add_interval(&data->mem_db, start, size); |
1da177e4 LT |
719 | break; |
720 | case REMOVE_MANAGED_RESOURCE: | |
22916638 DB |
721 | ret = sub_interval(&data->mem_db, start, size); |
722 | if (!ret) { | |
1da177e4 LT |
723 | struct pcmcia_socket *socket; |
724 | down_read(&pcmcia_socket_list_rwsem); | |
725 | list_for_each_entry(socket, &pcmcia_socket_list, socket_list) | |
726 | release_cis_mem(socket); | |
727 | up_read(&pcmcia_socket_list_rwsem); | |
728 | } | |
729 | break; | |
730 | default: | |
22916638 | 731 | ret = -EINVAL; |
1da177e4 | 732 | } |
7fe908dd | 733 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
734 | |
735 | return ret; | |
736 | } | |
737 | ||
738 | ||
22916638 | 739 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
740 | { |
741 | struct socket_data *data = s->resource_data; | |
22916638 DB |
742 | unsigned long size = end - start + 1; |
743 | int ret = 0; | |
1da177e4 | 744 | |
1146bc74 | 745 | if (end < start) |
22916638 DB |
746 | return -EINVAL; |
747 | ||
748 | if (end > IO_SPACE_LIMIT) | |
749 | return -EINVAL; | |
1da177e4 | 750 | |
7fe908dd | 751 | mutex_lock(&rsrc_mutex); |
22916638 | 752 | switch (action) { |
1da177e4 | 753 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
754 | if (add_interval(&data->io_db, start, size) != 0) { |
755 | ret = -EBUSY; | |
1da177e4 LT |
756 | break; |
757 | } | |
758 | #ifdef CONFIG_PCMCIA_PROBE | |
759 | if (probe_io) | |
22916638 | 760 | do_io_probe(s, start, size); |
1da177e4 LT |
761 | #endif |
762 | break; | |
763 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 764 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
765 | break; |
766 | default: | |
22916638 | 767 | ret = -EINVAL; |
1da177e4 LT |
768 | break; |
769 | } | |
7fe908dd | 770 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
771 | |
772 | return ret; | |
773 | } | |
774 | ||
775 | ||
3c29976a DB |
776 | #ifdef CONFIG_PCI |
777 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
778 | { | |
779 | struct resource *res; | |
780 | int i, done = 0; | |
781 | ||
782 | if (!s->cb_dev || !s->cb_dev->bus) | |
783 | return -ENODEV; | |
784 | ||
0d078f6f | 785 | #if defined(CONFIG_X86) |
b6d00f0d DB |
786 | /* If this is the root bus, the risk of hitting |
787 | * some strange system devices which aren't protected | |
788 | * by either ACPI resource tables or properly requested | |
789 | * resources is too big. Therefore, don't do auto-adding | |
790 | * of resources at the moment. | |
791 | */ | |
792 | if (s->cb_dev->bus->number == 0) | |
793 | return -EINVAL; | |
794 | #endif | |
795 | ||
3c29976a DB |
796 | for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) { |
797 | res = s->cb_dev->bus->resource[i]; | |
798 | if (!res) | |
799 | continue; | |
800 | ||
801 | if (res->flags & IORESOURCE_IO) { | |
802 | if (res == &ioport_resource) | |
803 | continue; | |
dbe4ea5f DB |
804 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
805 | "pcmcia: parent PCI bridge I/O " | |
806 | "window: 0x%llx - 0x%llx\n", | |
807 | (unsigned long long)res->start, | |
808 | (unsigned long long)res->end); | |
3c29976a DB |
809 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
810 | done |= IORESOURCE_IO; | |
811 | ||
812 | } | |
813 | ||
814 | if (res->flags & IORESOURCE_MEM) { | |
815 | if (res == &iomem_resource) | |
816 | continue; | |
dbe4ea5f DB |
817 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
818 | "pcmcia: parent PCI bridge Memory " | |
819 | "window: 0x%llx - 0x%llx\n", | |
820 | (unsigned long long)res->start, | |
821 | (unsigned long long)res->end); | |
3c29976a DB |
822 | if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
823 | done |= IORESOURCE_MEM; | |
824 | } | |
825 | } | |
826 | ||
827 | /* if we got at least one of IO, and one of MEM, we can be glad and | |
828 | * activate the PCMCIA subsystem */ | |
54bb5675 | 829 | if (done == (IORESOURCE_MEM | IORESOURCE_IO)) |
3c29976a DB |
830 | s->resource_setup_done = 1; |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | #else | |
836 | ||
837 | static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
838 | { | |
839 | return -ENODEV; | |
840 | } | |
841 | ||
842 | #endif | |
843 | ||
844 | ||
1da177e4 LT |
845 | static int nonstatic_init(struct pcmcia_socket *s) |
846 | { | |
847 | struct socket_data *data; | |
848 | ||
8084b372 | 849 | data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); |
1da177e4 LT |
850 | if (!data) |
851 | return -ENOMEM; | |
1da177e4 LT |
852 | |
853 | data->mem_db.next = &data->mem_db; | |
854 | data->io_db.next = &data->io_db; | |
855 | ||
856 | s->resource_data = (void *) data; | |
857 | ||
3c29976a DB |
858 | nonstatic_autoadd_resources(s); |
859 | ||
1da177e4 LT |
860 | return 0; |
861 | } | |
862 | ||
863 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
864 | { | |
865 | struct socket_data *data = s->resource_data; | |
866 | struct resource_map *p, *q; | |
867 | ||
7fe908dd | 868 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
869 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { |
870 | q = p->next; | |
871 | kfree(p); | |
872 | } | |
873 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
874 | q = p->next; | |
875 | kfree(p); | |
876 | } | |
7fe908dd | 877 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
878 | } |
879 | ||
880 | ||
881 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
882 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
883 | .adjust_io_region = nonstatic_adjust_io_region, | |
884 | .find_io = nonstatic_find_io_region, | |
885 | .find_mem = nonstatic_find_mem_region, | |
c5023801 DB |
886 | .add_io = adjust_io, |
887 | .add_mem = adjust_memory, | |
1da177e4 LT |
888 | .init = nonstatic_init, |
889 | .exit = nonstatic_release_resource_db, | |
890 | }; | |
891 | EXPORT_SYMBOL(pccard_nonstatic_ops); | |
892 | ||
893 | ||
894 | /* sysfs interface to the resource database */ | |
895 | ||
87373318 GKH |
896 | static ssize_t show_io_db(struct device *dev, |
897 | struct device_attribute *attr, char *buf) | |
1da177e4 | 898 | { |
87373318 | 899 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
900 | struct socket_data *data; |
901 | struct resource_map *p; | |
902 | ssize_t ret = 0; | |
903 | ||
7fe908dd | 904 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
905 | data = s->resource_data; |
906 | ||
907 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
908 | if (ret > (PAGE_SIZE - 10)) | |
909 | continue; | |
910 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
911 | "0x%08lx - 0x%08lx\n", | |
912 | ((unsigned long) p->base), | |
913 | ((unsigned long) p->base + p->num - 1)); | |
914 | } | |
915 | ||
7fe908dd | 916 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
917 | return (ret); |
918 | } | |
919 | ||
87373318 GKH |
920 | static ssize_t store_io_db(struct device *dev, |
921 | struct device_attribute *attr, | |
922 | const char *buf, size_t count) | |
1da177e4 | 923 | { |
87373318 | 924 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 925 | unsigned long start_addr, end_addr; |
22916638 | 926 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
927 | ssize_t ret = 0; |
928 | ||
929 | ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); | |
930 | if (ret != 2) { | |
931 | ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 932 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 LT |
933 | if (ret != 2) { |
934 | ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 935 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
936 | if (ret != 2) |
937 | return -EINVAL; | |
938 | } | |
939 | } | |
1146bc74 | 940 | if (end_addr < start_addr) |
1da177e4 LT |
941 | return -EINVAL; |
942 | ||
22916638 | 943 | ret = adjust_io(s, add, start_addr, end_addr); |
3c29976a DB |
944 | if (!ret) |
945 | s->resource_setup_new = 1; | |
1da177e4 LT |
946 | |
947 | return ret ? ret : count; | |
948 | } | |
87373318 | 949 | static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); |
1da177e4 | 950 | |
87373318 GKH |
951 | static ssize_t show_mem_db(struct device *dev, |
952 | struct device_attribute *attr, char *buf) | |
1da177e4 | 953 | { |
87373318 | 954 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
955 | struct socket_data *data; |
956 | struct resource_map *p; | |
957 | ssize_t ret = 0; | |
958 | ||
7fe908dd | 959 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
960 | data = s->resource_data; |
961 | ||
962 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { | |
963 | if (ret > (PAGE_SIZE - 10)) | |
964 | continue; | |
965 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
966 | "0x%08lx - 0x%08lx\n", | |
967 | ((unsigned long) p->base), | |
968 | ((unsigned long) p->base + p->num - 1)); | |
969 | } | |
970 | ||
7fe908dd | 971 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
972 | return (ret); |
973 | } | |
974 | ||
87373318 GKH |
975 | static ssize_t store_mem_db(struct device *dev, |
976 | struct device_attribute *attr, | |
977 | const char *buf, size_t count) | |
1da177e4 | 978 | { |
87373318 | 979 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 980 | unsigned long start_addr, end_addr; |
22916638 | 981 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
982 | ssize_t ret = 0; |
983 | ||
984 | ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); | |
985 | if (ret != 2) { | |
986 | ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 987 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 LT |
988 | if (ret != 2) { |
989 | ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 990 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
991 | if (ret != 2) |
992 | return -EINVAL; | |
993 | } | |
994 | } | |
1146bc74 | 995 | if (end_addr < start_addr) |
1da177e4 LT |
996 | return -EINVAL; |
997 | ||
22916638 | 998 | ret = adjust_memory(s, add, start_addr, end_addr); |
3c29976a DB |
999 | if (!ret) |
1000 | s->resource_setup_new = 1; | |
1da177e4 LT |
1001 | |
1002 | return ret ? ret : count; | |
1003 | } | |
87373318 | 1004 | static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); |
1da177e4 | 1005 | |
7d578961 DB |
1006 | static struct attribute *pccard_rsrc_attributes[] = { |
1007 | &dev_attr_available_resources_io.attr, | |
1008 | &dev_attr_available_resources_mem.attr, | |
1da177e4 LT |
1009 | NULL, |
1010 | }; | |
1011 | ||
7d578961 DB |
1012 | static const struct attribute_group rsrc_attributes = { |
1013 | .attrs = pccard_rsrc_attributes, | |
1014 | }; | |
1015 | ||
87373318 | 1016 | static int __devinit pccard_sysfs_add_rsrc(struct device *dev, |
d8539d81 | 1017 | struct class_interface *class_intf) |
1da177e4 | 1018 | { |
87373318 | 1019 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
7d578961 | 1020 | |
1da177e4 LT |
1021 | if (s->resource_ops != &pccard_nonstatic_ops) |
1022 | return 0; | |
7d578961 | 1023 | return sysfs_create_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1024 | } |
1025 | ||
87373318 | 1026 | static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, |
d8539d81 | 1027 | struct class_interface *class_intf) |
1da177e4 | 1028 | { |
87373318 | 1029 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1030 | |
1031 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1032 | return; | |
7d578961 | 1033 | sysfs_remove_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1034 | } |
1035 | ||
ed49f5d0 | 1036 | static struct class_interface pccard_rsrc_interface __refdata = { |
1da177e4 | 1037 | .class = &pcmcia_socket_class, |
87373318 GKH |
1038 | .add_dev = &pccard_sysfs_add_rsrc, |
1039 | .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), | |
1da177e4 LT |
1040 | }; |
1041 | ||
1042 | static int __init nonstatic_sysfs_init(void) | |
1043 | { | |
1044 | return class_interface_register(&pccard_rsrc_interface); | |
1045 | } | |
1046 | ||
1047 | static void __exit nonstatic_sysfs_exit(void) | |
1048 | { | |
1049 | class_interface_unregister(&pccard_rsrc_interface); | |
1050 | } | |
1051 | ||
1052 | module_init(nonstatic_sysfs_init); | |
1053 | module_exit(nonstatic_sysfs_exit); |