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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; | |
137 | return CS_SUCCESS; | |
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 | } | |
177 | return CS_SUCCESS; | |
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 | ||
906da809 | 197 | printk(KERN_INFO "cs: IO port probe %#x-%#x:", |
1da177e4 LT |
198 | base, base+num-1); |
199 | ||
200 | /* First, what does a floating port look like? */ | |
8084b372 | 201 | b = kzalloc(256, GFP_KERNEL); |
1da177e4 LT |
202 | if (!b) { |
203 | printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes"); | |
204 | return; | |
205 | } | |
1da177e4 LT |
206 | for (i = base, most = 0; i < base+num; i += 8) { |
207 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
208 | if (!res) | |
209 | continue; | |
210 | hole = inb(i); | |
211 | for (j = 1; j < 8; j++) | |
212 | if (inb(i+j) != hole) break; | |
213 | free_region(res); | |
214 | if ((j == 8) && (++b[hole] > b[most])) | |
215 | most = hole; | |
216 | if (b[most] == 127) break; | |
217 | } | |
218 | kfree(b); | |
219 | ||
220 | bad = any = 0; | |
221 | for (i = base; i < base+num; i += 8) { | |
222 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
223 | if (!res) | |
224 | continue; | |
225 | for (j = 0; j < 8; j++) | |
226 | if (inb(i+j) != most) break; | |
227 | free_region(res); | |
228 | if (j < 8) { | |
229 | if (!any) | |
230 | printk(" excluding"); | |
231 | if (!bad) | |
232 | bad = any = i; | |
233 | } else { | |
234 | if (bad) { | |
235 | sub_interval(&s_data->io_db, bad, i-bad); | |
906da809 | 236 | printk(" %#x-%#x", bad, i-1); |
1da177e4 LT |
237 | bad = 0; |
238 | } | |
239 | } | |
240 | } | |
241 | if (bad) { | |
242 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
243 | printk(" nothing: probe failed.\n"); | |
244 | return; | |
245 | } else { | |
246 | sub_interval(&s_data->io_db, bad, i-bad); | |
906da809 | 247 | printk(" %#x-%#x", bad, i-1); |
1da177e4 LT |
248 | } |
249 | } | |
250 | ||
251 | printk(any ? "\n" : " clean.\n"); | |
252 | } | |
253 | #endif | |
254 | ||
255 | /*====================================================================== | |
256 | ||
257 | This is tricky... when we set up CIS memory, we try to validate | |
258 | the memory window space allocations. | |
259 | ||
260 | ======================================================================*/ | |
261 | ||
262 | /* Validation function for cards with a valid CIS */ | |
c5081d5f DB |
263 | static int readable(struct pcmcia_socket *s, struct resource *res, |
264 | unsigned int *count) | |
1da177e4 LT |
265 | { |
266 | int ret = -1; | |
267 | ||
268 | s->cis_mem.res = res; | |
269 | s->cis_virt = ioremap(res->start, s->map_size); | |
270 | if (s->cis_virt) { | |
c5081d5f | 271 | ret = pccard_validate_cis(s, BIND_FN_ALL, count); |
1da177e4 LT |
272 | /* invalidate mapping and CIS cache */ |
273 | iounmap(s->cis_virt); | |
274 | s->cis_virt = NULL; | |
275 | destroy_cis_cache(s); | |
276 | } | |
277 | s->cis_mem.res = NULL; | |
0e09c863 | 278 | if ((ret != 0) || (*count == 0)) |
1da177e4 LT |
279 | return 0; |
280 | return 1; | |
281 | } | |
282 | ||
283 | /* Validation function for simple memory cards */ | |
284 | static int checksum(struct pcmcia_socket *s, struct resource *res) | |
285 | { | |
286 | pccard_mem_map map; | |
287 | int i, a = 0, b = -1, d; | |
288 | void __iomem *virt; | |
289 | ||
290 | virt = ioremap(res->start, s->map_size); | |
291 | if (virt) { | |
292 | map.map = 0; | |
293 | map.flags = MAP_ACTIVE; | |
294 | map.speed = 0; | |
295 | map.res = res; | |
296 | map.card_start = 0; | |
297 | s->ops->set_mem_map(s, &map); | |
298 | ||
299 | /* Don't bother checking every word... */ | |
300 | for (i = 0; i < s->map_size; i += 44) { | |
301 | d = readl(virt+i); | |
302 | a += d; | |
303 | b &= d; | |
304 | } | |
305 | ||
306 | map.flags = 0; | |
307 | s->ops->set_mem_map(s, &map); | |
308 | ||
309 | iounmap(virt); | |
310 | } | |
311 | ||
312 | return (b == -1) ? -1 : (a>>1); | |
313 | } | |
314 | ||
315 | static int | |
316 | cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
317 | { | |
318 | struct resource *res1, *res2; | |
c5081d5f | 319 | unsigned int info1, info2; |
1da177e4 LT |
320 | int ret = 0; |
321 | ||
322 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
323 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
324 | ||
325 | if (res1 && res2) { | |
326 | ret = readable(s, res1, &info1); | |
327 | ret += readable(s, res2, &info2); | |
328 | } | |
329 | ||
330 | free_region(res2); | |
331 | free_region(res1); | |
332 | ||
c5081d5f | 333 | return (ret == 2) && (info1 == info2); |
1da177e4 LT |
334 | } |
335 | ||
336 | static int | |
337 | checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
338 | { | |
339 | struct resource *res1, *res2; | |
340 | int a = -1, b = -1; | |
341 | ||
342 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
343 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
344 | ||
345 | if (res1 && res2) { | |
346 | a = checksum(s, res1); | |
347 | b = checksum(s, res2); | |
348 | } | |
349 | ||
350 | free_region(res2); | |
351 | free_region(res1); | |
352 | ||
353 | return (a == b) && (a >= 0); | |
354 | } | |
355 | ||
356 | /*====================================================================== | |
357 | ||
358 | The memory probe. If the memory list includes a 64K-aligned block | |
359 | below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
360 | least mem_limit free space, we quit. | |
361 | ||
362 | ======================================================================*/ | |
363 | ||
364 | static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) | |
365 | { | |
366 | struct socket_data *s_data = s->resource_data; | |
367 | u_long i, j, bad, fail, step; | |
368 | ||
369 | printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:", | |
370 | base, base+num-1); | |
371 | bad = fail = 0; | |
372 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
2ad0a0a7 DB |
373 | /* don't allow too large steps */ |
374 | if (step > 0x800000) | |
375 | step = 0x800000; | |
1da177e4 LT |
376 | /* cis_readable wants to map 2x map_size */ |
377 | if (step < 2 * s->map_size) | |
378 | step = 2 * s->map_size; | |
379 | for (i = j = base; i < base+num; i = j + step) { | |
380 | if (!fail) { | |
381 | for (j = i; j < base+num; j += step) { | |
382 | if (cis_readable(s, j, step)) | |
383 | break; | |
384 | } | |
385 | fail = ((i == base) && (j == base+num)); | |
386 | } | |
387 | if (fail) { | |
388 | for (j = i; j < base+num; j += 2*step) | |
389 | if (checksum_match(s, j, step) && | |
390 | checksum_match(s, j + step, step)) | |
391 | break; | |
392 | } | |
393 | if (i != j) { | |
394 | if (!bad) printk(" excluding"); | |
395 | printk(" %#05lx-%#05lx", i, j-1); | |
396 | sub_interval(&s_data->mem_db, i, j-i); | |
397 | bad += j-i; | |
398 | } | |
399 | } | |
400 | printk(bad ? "\n" : " clean.\n"); | |
401 | return (num - bad); | |
402 | } | |
403 | ||
404 | #ifdef CONFIG_PCMCIA_PROBE | |
405 | ||
406 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) | |
407 | { | |
de75914e DB |
408 | struct socket_data *s_data = s->resource_data; |
409 | u_long ok; | |
410 | if (m == &s_data->mem_db) | |
411 | return 0; | |
412 | ok = inv_probe(m->next, s); | |
413 | if (ok) { | |
414 | if (m->base >= 0x100000) | |
415 | sub_interval(&s_data->mem_db, m->base, m->num); | |
416 | return ok; | |
417 | } | |
418 | if (m->base < 0x100000) | |
419 | return 0; | |
420 | return do_mem_probe(m->base, m->num, s); | |
1da177e4 LT |
421 | } |
422 | ||
de75914e | 423 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 424 | { |
de75914e DB |
425 | struct resource_map *m, mm; |
426 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
427 | unsigned long b, i, ok = 0; | |
428 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 429 | |
de75914e DB |
430 | /* We do up to four passes through the list */ |
431 | if (probe_mask & MEM_PROBE_HIGH) { | |
432 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
433 | return 0; | |
434 | printk(KERN_NOTICE "cs: warning: no high memory space " | |
435 | "available!\n"); | |
436 | return -ENODEV; | |
1da177e4 | 437 | } |
de75914e DB |
438 | |
439 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
440 | mm = *m; | |
441 | /* Only probe < 1 MB */ | |
442 | if (mm.base >= 0x100000) | |
443 | continue; | |
444 | if ((mm.base | mm.num) & 0xffff) { | |
445 | ok += do_mem_probe(mm.base, mm.num, s); | |
446 | continue; | |
447 | } | |
448 | /* Special probe for 64K-aligned block */ | |
449 | for (i = 0; i < 4; i++) { | |
450 | b = order[i] << 12; | |
451 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
452 | if (ok >= mem_limit) | |
453 | sub_interval(&s_data->mem_db, b, 0x10000); | |
454 | else | |
455 | ok += do_mem_probe(b, 0x10000, s); | |
456 | } | |
457 | } | |
1da177e4 | 458 | } |
de75914e DB |
459 | |
460 | if (ok > 0) | |
461 | return 0; | |
462 | ||
463 | return -ENODEV; | |
1da177e4 LT |
464 | } |
465 | ||
466 | #else /* CONFIG_PCMCIA_PROBE */ | |
467 | ||
2cff9447 | 468 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 LT |
469 | { |
470 | struct resource_map *m, mm; | |
471 | struct socket_data *s_data = s->resource_data; | |
2cff9447 | 472 | unsigned long ok = 0; |
1da177e4 LT |
473 | |
474 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
475 | mm = *m; | |
2cff9447 | 476 | ok += do_mem_probe(mm.base, mm.num, s); |
1da177e4 | 477 | } |
2cff9447 AM |
478 | if (ok > 0) |
479 | return 0; | |
480 | return -ENODEV; | |
1da177e4 LT |
481 | } |
482 | ||
483 | #endif /* CONFIG_PCMCIA_PROBE */ | |
484 | ||
485 | ||
486 | /* | |
7fe908dd | 487 | * Locking note: Must be called with skt_mutex held! |
1da177e4 | 488 | */ |
de75914e | 489 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
490 | { |
491 | struct socket_data *s_data = s->resource_data; | |
de75914e DB |
492 | unsigned int probe_mask = MEM_PROBE_LOW; |
493 | int ret = 0; | |
494 | ||
495 | if (!probe_mem) | |
496 | return 0; | |
1da177e4 | 497 | |
7fe908dd | 498 | mutex_lock(&rsrc_mutex); |
1da177e4 | 499 | |
de75914e DB |
500 | if (s->features & SS_CAP_PAGE_REGS) |
501 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 502 | |
de75914e DB |
503 | if (probe_mask & ~s_data->rsrc_mem_probe) { |
504 | if (s->state & SOCKET_PRESENT) | |
505 | ret = validate_mem(s, probe_mask); | |
506 | if (!ret) | |
1da177e4 | 507 | s_data->rsrc_mem_probe |= probe_mask; |
de75914e | 508 | } |
1da177e4 | 509 | |
7fe908dd | 510 | mutex_unlock(&rsrc_mutex); |
1da177e4 | 511 | |
de75914e | 512 | return ret; |
1da177e4 LT |
513 | } |
514 | ||
515 | struct pcmcia_align_data { | |
516 | unsigned long mask; | |
517 | unsigned long offset; | |
518 | struct resource_map *map; | |
519 | }; | |
520 | ||
521 | static void | |
522 | pcmcia_common_align(void *align_data, struct resource *res, | |
2427ddd8 | 523 | resource_size_t size, resource_size_t align) |
1da177e4 LT |
524 | { |
525 | struct pcmcia_align_data *data = align_data; | |
2427ddd8 | 526 | resource_size_t start; |
1da177e4 LT |
527 | /* |
528 | * Ensure that we have the correct start address | |
529 | */ | |
530 | start = (res->start & ~data->mask) + data->offset; | |
531 | if (start < res->start) | |
532 | start += data->mask + 1; | |
533 | res->start = start; | |
534 | } | |
535 | ||
536 | static void | |
2427ddd8 GKH |
537 | pcmcia_align(void *align_data, struct resource *res, resource_size_t size, |
538 | resource_size_t align) | |
1da177e4 LT |
539 | { |
540 | struct pcmcia_align_data *data = align_data; | |
541 | struct resource_map *m; | |
542 | ||
543 | pcmcia_common_align(data, res, size, align); | |
544 | ||
545 | for (m = data->map->next; m != data->map; m = m->next) { | |
546 | unsigned long start = m->base; | |
547 | unsigned long end = m->base + m->num - 1; | |
548 | ||
549 | /* | |
550 | * If the lower resources are not available, try aligning | |
551 | * to this entry of the resource database to see if it'll | |
552 | * fit here. | |
553 | */ | |
554 | if (res->start < start) { | |
555 | res->start = start; | |
556 | pcmcia_common_align(data, res, size, align); | |
557 | } | |
558 | ||
559 | /* | |
560 | * If we're above the area which was passed in, there's | |
561 | * no point proceeding. | |
562 | */ | |
563 | if (res->start >= res->end) | |
564 | break; | |
565 | ||
566 | if ((res->start + size - 1) <= end) | |
567 | break; | |
568 | } | |
569 | ||
570 | /* | |
571 | * If we failed to find something suitable, ensure we fail. | |
572 | */ | |
573 | if (m == data->map) | |
574 | res->start = res->end; | |
575 | } | |
576 | ||
577 | /* | |
578 | * Adjust an existing IO region allocation, but making sure that we don't | |
579 | * encroach outside the resources which the user supplied. | |
580 | */ | |
581 | static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, | |
582 | unsigned long r_end, struct pcmcia_socket *s) | |
583 | { | |
584 | struct resource_map *m; | |
585 | struct socket_data *s_data = s->resource_data; | |
586 | int ret = -ENOMEM; | |
587 | ||
7fe908dd | 588 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
589 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { |
590 | unsigned long start = m->base; | |
591 | unsigned long end = m->base + m->num - 1; | |
592 | ||
593 | if (start > r_start || r_end > end) | |
594 | continue; | |
595 | ||
596 | ret = adjust_resource(res, r_start, r_end - r_start + 1); | |
597 | break; | |
598 | } | |
7fe908dd | 599 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
600 | |
601 | return ret; | |
602 | } | |
603 | ||
604 | /*====================================================================== | |
605 | ||
606 | These find ranges of I/O ports or memory addresses that are not | |
607 | currently allocated by other devices. | |
608 | ||
609 | The 'align' field should reflect the number of bits of address | |
610 | that need to be preserved from the initial value of *base. It | |
611 | should be a power of two, greater than or equal to 'num'. A value | |
612 | of 0 means that all bits of *base are significant. *base should | |
613 | also be strictly less than 'align'. | |
614 | ||
615 | ======================================================================*/ | |
616 | ||
e94e15f7 | 617 | static struct resource *nonstatic_find_io_region(unsigned long base, int num, |
1da177e4 LT |
618 | unsigned long align, struct pcmcia_socket *s) |
619 | { | |
87373318 | 620 | struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.bus_id); |
1da177e4 LT |
621 | struct socket_data *s_data = s->resource_data; |
622 | struct pcmcia_align_data data; | |
623 | unsigned long min = base; | |
624 | int ret; | |
625 | ||
626 | if (align == 0) | |
627 | align = 0x10000; | |
628 | ||
629 | data.mask = align - 1; | |
630 | data.offset = base & data.mask; | |
631 | data.map = &s_data->io_db; | |
632 | ||
7fe908dd | 633 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
634 | #ifdef CONFIG_PCI |
635 | if (s->cb_dev) { | |
636 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
637 | min, 0, pcmcia_align, &data); | |
638 | } else | |
639 | #endif | |
640 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
641 | 1, pcmcia_align, &data); | |
7fe908dd | 642 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
643 | |
644 | if (ret != 0) { | |
645 | kfree(res); | |
646 | res = NULL; | |
647 | } | |
648 | return res; | |
649 | } | |
650 | ||
e94e15f7 DB |
651 | static struct resource * nonstatic_find_mem_region(u_long base, u_long num, |
652 | u_long align, int low, struct pcmcia_socket *s) | |
1da177e4 | 653 | { |
87373318 | 654 | struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.bus_id); |
1da177e4 LT |
655 | struct socket_data *s_data = s->resource_data; |
656 | struct pcmcia_align_data data; | |
657 | unsigned long min, max; | |
658 | int ret, i; | |
659 | ||
660 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
661 | ||
662 | data.mask = align - 1; | |
663 | data.offset = base & data.mask; | |
664 | data.map = &s_data->mem_db; | |
665 | ||
666 | for (i = 0; i < 2; i++) { | |
667 | if (low) { | |
668 | max = 0x100000UL; | |
669 | min = base < max ? base : 0; | |
670 | } else { | |
671 | max = ~0UL; | |
672 | min = 0x100000UL + base; | |
673 | } | |
674 | ||
7fe908dd | 675 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
676 | #ifdef CONFIG_PCI |
677 | if (s->cb_dev) { | |
678 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, | |
679 | 1, min, 0, | |
680 | pcmcia_align, &data); | |
681 | } else | |
682 | #endif | |
683 | ret = allocate_resource(&iomem_resource, res, num, min, | |
684 | max, 1, pcmcia_align, &data); | |
7fe908dd | 685 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
686 | if (ret == 0 || low) |
687 | break; | |
688 | low = 1; | |
689 | } | |
690 | ||
691 | if (ret != 0) { | |
692 | kfree(res); | |
693 | res = NULL; | |
694 | } | |
695 | return res; | |
696 | } | |
697 | ||
698 | ||
22916638 | 699 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 700 | { |
1da177e4 | 701 | struct socket_data *data = s->resource_data; |
22916638 DB |
702 | unsigned long size = end - start + 1; |
703 | int ret = 0; | |
1da177e4 | 704 | |
1146bc74 | 705 | if (end < start) |
22916638 | 706 | return -EINVAL; |
1da177e4 | 707 | |
7fe908dd | 708 | mutex_lock(&rsrc_mutex); |
22916638 | 709 | switch (action) { |
1da177e4 | 710 | case ADD_MANAGED_RESOURCE: |
22916638 | 711 | ret = add_interval(&data->mem_db, start, size); |
1da177e4 LT |
712 | break; |
713 | case REMOVE_MANAGED_RESOURCE: | |
22916638 DB |
714 | ret = sub_interval(&data->mem_db, start, size); |
715 | if (!ret) { | |
1da177e4 LT |
716 | struct pcmcia_socket *socket; |
717 | down_read(&pcmcia_socket_list_rwsem); | |
718 | list_for_each_entry(socket, &pcmcia_socket_list, socket_list) | |
719 | release_cis_mem(socket); | |
720 | up_read(&pcmcia_socket_list_rwsem); | |
721 | } | |
722 | break; | |
723 | default: | |
22916638 | 724 | ret = -EINVAL; |
1da177e4 | 725 | } |
7fe908dd | 726 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
727 | |
728 | return ret; | |
729 | } | |
730 | ||
731 | ||
22916638 | 732 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
733 | { |
734 | struct socket_data *data = s->resource_data; | |
22916638 DB |
735 | unsigned long size = end - start + 1; |
736 | int ret = 0; | |
1da177e4 | 737 | |
1146bc74 | 738 | if (end < start) |
22916638 DB |
739 | return -EINVAL; |
740 | ||
741 | if (end > IO_SPACE_LIMIT) | |
742 | return -EINVAL; | |
1da177e4 | 743 | |
7fe908dd | 744 | mutex_lock(&rsrc_mutex); |
22916638 | 745 | switch (action) { |
1da177e4 | 746 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
747 | if (add_interval(&data->io_db, start, size) != 0) { |
748 | ret = -EBUSY; | |
1da177e4 LT |
749 | break; |
750 | } | |
751 | #ifdef CONFIG_PCMCIA_PROBE | |
752 | if (probe_io) | |
22916638 | 753 | do_io_probe(s, start, size); |
1da177e4 LT |
754 | #endif |
755 | break; | |
756 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 757 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
758 | break; |
759 | default: | |
22916638 | 760 | ret = -EINVAL; |
1da177e4 LT |
761 | break; |
762 | } | |
7fe908dd | 763 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
764 | |
765 | return ret; | |
766 | } | |
767 | ||
768 | ||
3c29976a DB |
769 | #ifdef CONFIG_PCI |
770 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
771 | { | |
772 | struct resource *res; | |
773 | int i, done = 0; | |
774 | ||
775 | if (!s->cb_dev || !s->cb_dev->bus) | |
776 | return -ENODEV; | |
777 | ||
0d078f6f | 778 | #if defined(CONFIG_X86) |
b6d00f0d DB |
779 | /* If this is the root bus, the risk of hitting |
780 | * some strange system devices which aren't protected | |
781 | * by either ACPI resource tables or properly requested | |
782 | * resources is too big. Therefore, don't do auto-adding | |
783 | * of resources at the moment. | |
784 | */ | |
785 | if (s->cb_dev->bus->number == 0) | |
786 | return -EINVAL; | |
787 | #endif | |
788 | ||
3c29976a DB |
789 | for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) { |
790 | res = s->cb_dev->bus->resource[i]; | |
791 | if (!res) | |
792 | continue; | |
793 | ||
794 | if (res->flags & IORESOURCE_IO) { | |
795 | if (res == &ioport_resource) | |
796 | continue; | |
490ab72a GKH |
797 | printk(KERN_INFO "pcmcia: parent PCI bridge I/O " |
798 | "window: 0x%llx - 0x%llx\n", | |
799 | (unsigned long long)res->start, | |
800 | (unsigned long long)res->end); | |
3c29976a DB |
801 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
802 | done |= IORESOURCE_IO; | |
803 | ||
804 | } | |
805 | ||
806 | if (res->flags & IORESOURCE_MEM) { | |
807 | if (res == &iomem_resource) | |
808 | continue; | |
490ab72a GKH |
809 | printk(KERN_INFO "pcmcia: parent PCI bridge Memory " |
810 | "window: 0x%llx - 0x%llx\n", | |
811 | (unsigned long long)res->start, | |
812 | (unsigned long long)res->end); | |
3c29976a DB |
813 | if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
814 | done |= IORESOURCE_MEM; | |
815 | } | |
816 | } | |
817 | ||
818 | /* if we got at least one of IO, and one of MEM, we can be glad and | |
819 | * activate the PCMCIA subsystem */ | |
54bb5675 | 820 | if (done == (IORESOURCE_MEM | IORESOURCE_IO)) |
3c29976a DB |
821 | s->resource_setup_done = 1; |
822 | ||
823 | return 0; | |
824 | } | |
825 | ||
826 | #else | |
827 | ||
828 | static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
829 | { | |
830 | return -ENODEV; | |
831 | } | |
832 | ||
833 | #endif | |
834 | ||
835 | ||
1da177e4 LT |
836 | static int nonstatic_init(struct pcmcia_socket *s) |
837 | { | |
838 | struct socket_data *data; | |
839 | ||
8084b372 | 840 | data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); |
1da177e4 LT |
841 | if (!data) |
842 | return -ENOMEM; | |
1da177e4 LT |
843 | |
844 | data->mem_db.next = &data->mem_db; | |
845 | data->io_db.next = &data->io_db; | |
846 | ||
847 | s->resource_data = (void *) data; | |
848 | ||
3c29976a DB |
849 | nonstatic_autoadd_resources(s); |
850 | ||
1da177e4 LT |
851 | return 0; |
852 | } | |
853 | ||
854 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
855 | { | |
856 | struct socket_data *data = s->resource_data; | |
857 | struct resource_map *p, *q; | |
858 | ||
7fe908dd | 859 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
860 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { |
861 | q = p->next; | |
862 | kfree(p); | |
863 | } | |
864 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
865 | q = p->next; | |
866 | kfree(p); | |
867 | } | |
7fe908dd | 868 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
869 | } |
870 | ||
871 | ||
872 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
873 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
874 | .adjust_io_region = nonstatic_adjust_io_region, | |
875 | .find_io = nonstatic_find_io_region, | |
876 | .find_mem = nonstatic_find_mem_region, | |
c5023801 DB |
877 | .add_io = adjust_io, |
878 | .add_mem = adjust_memory, | |
1da177e4 LT |
879 | .init = nonstatic_init, |
880 | .exit = nonstatic_release_resource_db, | |
881 | }; | |
882 | EXPORT_SYMBOL(pccard_nonstatic_ops); | |
883 | ||
884 | ||
885 | /* sysfs interface to the resource database */ | |
886 | ||
87373318 GKH |
887 | static ssize_t show_io_db(struct device *dev, |
888 | struct device_attribute *attr, char *buf) | |
1da177e4 | 889 | { |
87373318 | 890 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
891 | struct socket_data *data; |
892 | struct resource_map *p; | |
893 | ssize_t ret = 0; | |
894 | ||
7fe908dd | 895 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
896 | data = s->resource_data; |
897 | ||
898 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
899 | if (ret > (PAGE_SIZE - 10)) | |
900 | continue; | |
901 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
902 | "0x%08lx - 0x%08lx\n", | |
903 | ((unsigned long) p->base), | |
904 | ((unsigned long) p->base + p->num - 1)); | |
905 | } | |
906 | ||
7fe908dd | 907 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
908 | return (ret); |
909 | } | |
910 | ||
87373318 GKH |
911 | static ssize_t store_io_db(struct device *dev, |
912 | struct device_attribute *attr, | |
913 | const char *buf, size_t count) | |
1da177e4 | 914 | { |
87373318 | 915 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 916 | unsigned long start_addr, end_addr; |
22916638 | 917 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
918 | ssize_t ret = 0; |
919 | ||
920 | ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); | |
921 | if (ret != 2) { | |
922 | ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 923 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 LT |
924 | if (ret != 2) { |
925 | ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 926 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
927 | if (ret != 2) |
928 | return -EINVAL; | |
929 | } | |
930 | } | |
1146bc74 | 931 | if (end_addr < start_addr) |
1da177e4 LT |
932 | return -EINVAL; |
933 | ||
22916638 | 934 | ret = adjust_io(s, add, start_addr, end_addr); |
3c29976a DB |
935 | if (!ret) |
936 | s->resource_setup_new = 1; | |
1da177e4 LT |
937 | |
938 | return ret ? ret : count; | |
939 | } | |
87373318 | 940 | static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); |
1da177e4 | 941 | |
87373318 GKH |
942 | static ssize_t show_mem_db(struct device *dev, |
943 | struct device_attribute *attr, char *buf) | |
1da177e4 | 944 | { |
87373318 | 945 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
946 | struct socket_data *data; |
947 | struct resource_map *p; | |
948 | ssize_t ret = 0; | |
949 | ||
7fe908dd | 950 | mutex_lock(&rsrc_mutex); |
1da177e4 LT |
951 | data = s->resource_data; |
952 | ||
953 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { | |
954 | if (ret > (PAGE_SIZE - 10)) | |
955 | continue; | |
956 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
957 | "0x%08lx - 0x%08lx\n", | |
958 | ((unsigned long) p->base), | |
959 | ((unsigned long) p->base + p->num - 1)); | |
960 | } | |
961 | ||
7fe908dd | 962 | mutex_unlock(&rsrc_mutex); |
1da177e4 LT |
963 | return (ret); |
964 | } | |
965 | ||
87373318 GKH |
966 | static ssize_t store_mem_db(struct device *dev, |
967 | struct device_attribute *attr, | |
968 | const char *buf, size_t count) | |
1da177e4 | 969 | { |
87373318 | 970 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 971 | unsigned long start_addr, end_addr; |
22916638 | 972 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
973 | ssize_t ret = 0; |
974 | ||
975 | ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); | |
976 | if (ret != 2) { | |
977 | ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 978 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 LT |
979 | if (ret != 2) { |
980 | ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 981 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
982 | if (ret != 2) |
983 | return -EINVAL; | |
984 | } | |
985 | } | |
1146bc74 | 986 | if (end_addr < start_addr) |
1da177e4 LT |
987 | return -EINVAL; |
988 | ||
22916638 | 989 | ret = adjust_memory(s, add, start_addr, end_addr); |
3c29976a DB |
990 | if (!ret) |
991 | s->resource_setup_new = 1; | |
1da177e4 LT |
992 | |
993 | return ret ? ret : count; | |
994 | } | |
87373318 | 995 | static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); |
1da177e4 | 996 | |
7d578961 DB |
997 | static struct attribute *pccard_rsrc_attributes[] = { |
998 | &dev_attr_available_resources_io.attr, | |
999 | &dev_attr_available_resources_mem.attr, | |
1da177e4 LT |
1000 | NULL, |
1001 | }; | |
1002 | ||
7d578961 DB |
1003 | static const struct attribute_group rsrc_attributes = { |
1004 | .attrs = pccard_rsrc_attributes, | |
1005 | }; | |
1006 | ||
87373318 | 1007 | static int __devinit pccard_sysfs_add_rsrc(struct device *dev, |
d8539d81 | 1008 | struct class_interface *class_intf) |
1da177e4 | 1009 | { |
87373318 | 1010 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
7d578961 | 1011 | |
1da177e4 LT |
1012 | if (s->resource_ops != &pccard_nonstatic_ops) |
1013 | return 0; | |
7d578961 | 1014 | return sysfs_create_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1015 | } |
1016 | ||
87373318 | 1017 | static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, |
d8539d81 | 1018 | struct class_interface *class_intf) |
1da177e4 | 1019 | { |
87373318 | 1020 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1021 | |
1022 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1023 | return; | |
7d578961 | 1024 | sysfs_remove_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1025 | } |
1026 | ||
ed49f5d0 | 1027 | static struct class_interface pccard_rsrc_interface __refdata = { |
1da177e4 | 1028 | .class = &pcmcia_socket_class, |
87373318 GKH |
1029 | .add_dev = &pccard_sysfs_add_rsrc, |
1030 | .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), | |
1da177e4 LT |
1031 | }; |
1032 | ||
1033 | static int __init nonstatic_sysfs_init(void) | |
1034 | { | |
1035 | return class_interface_register(&pccard_rsrc_interface); | |
1036 | } | |
1037 | ||
1038 | static void __exit nonstatic_sysfs_exit(void) | |
1039 | { | |
1040 | class_interface_unregister(&pccard_rsrc_interface); | |
1041 | } | |
1042 | ||
1043 | module_init(nonstatic_sysfs_init); | |
1044 | module_exit(nonstatic_sysfs_exit); |