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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 | ||
15 | #include <linux/config.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/moduleparam.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/ioport.h> | |
25 | #include <linux/timer.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/device.h> | |
28 | ||
29 | #include <asm/irq.h> | |
30 | #include <asm/io.h> | |
31 | ||
32 | #include <pcmcia/cs_types.h> | |
33 | #include <pcmcia/ss.h> | |
34 | #include <pcmcia/cs.h> | |
35 | #include <pcmcia/bulkmem.h> | |
36 | #include <pcmcia/cistpl.h> | |
37 | #include "cs_internal.h" | |
38 | ||
39 | MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); | |
40 | MODULE_LICENSE("GPL"); | |
41 | ||
42 | /* Parameters that can be set with 'insmod' */ | |
43 | ||
44 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) | |
45 | ||
46 | INT_MODULE_PARM(probe_mem, 1); /* memory probe? */ | |
47 | #ifdef CONFIG_PCMCIA_PROBE | |
48 | INT_MODULE_PARM(probe_io, 1); /* IO port probe? */ | |
49 | INT_MODULE_PARM(mem_limit, 0x10000); | |
50 | #endif | |
51 | ||
52 | /* for io_db and mem_db */ | |
53 | struct resource_map { | |
54 | u_long base, num; | |
55 | struct resource_map *next; | |
56 | }; | |
57 | ||
58 | struct socket_data { | |
59 | struct resource_map mem_db; | |
60 | struct resource_map io_db; | |
61 | unsigned int rsrc_mem_probe; | |
62 | }; | |
63 | ||
64 | static DECLARE_MUTEX(rsrc_sem); | |
65 | #define MEM_PROBE_LOW (1 << 0) | |
66 | #define MEM_PROBE_HIGH (1 << 1) | |
67 | ||
68 | ||
69 | /*====================================================================== | |
70 | ||
71 | Linux resource management extensions | |
72 | ||
73 | ======================================================================*/ | |
74 | ||
75 | static struct resource * | |
76 | make_resource(unsigned long b, unsigned long n, int flags, char *name) | |
77 | { | |
78 | struct resource *res = kmalloc(sizeof(*res), GFP_KERNEL); | |
79 | ||
80 | if (res) { | |
81 | memset(res, 0, sizeof(*res)); | |
82 | res->name = name; | |
83 | res->start = b; | |
84 | res->end = b + n - 1; | |
85 | res->flags = flags; | |
86 | } | |
87 | return res; | |
88 | } | |
89 | ||
90 | static struct resource * | |
91 | claim_region(struct pcmcia_socket *s, unsigned long base, unsigned long size, | |
92 | int type, char *name) | |
93 | { | |
94 | struct resource *res, *parent; | |
95 | ||
96 | parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; | |
97 | res = make_resource(base, size, type | IORESOURCE_BUSY, name); | |
98 | ||
99 | if (res) { | |
100 | #ifdef CONFIG_PCI | |
101 | if (s && s->cb_dev) | |
102 | parent = pci_find_parent_resource(s->cb_dev, res); | |
103 | #endif | |
104 | if (!parent || request_resource(parent, res)) { | |
105 | kfree(res); | |
106 | res = NULL; | |
107 | } | |
108 | } | |
109 | return res; | |
110 | } | |
111 | ||
112 | static void free_region(struct resource *res) | |
113 | { | |
114 | if (res) { | |
115 | release_resource(res); | |
116 | kfree(res); | |
117 | } | |
118 | } | |
119 | ||
120 | /*====================================================================== | |
121 | ||
122 | These manage the internal databases of available resources. | |
123 | ||
124 | ======================================================================*/ | |
125 | ||
126 | static int add_interval(struct resource_map *map, u_long base, u_long num) | |
127 | { | |
128 | struct resource_map *p, *q; | |
129 | ||
130 | for (p = map; ; p = p->next) { | |
131 | if ((p != map) && (p->base+p->num-1 >= base)) | |
132 | return -1; | |
133 | if ((p->next == map) || (p->next->base > base+num-1)) | |
134 | break; | |
135 | } | |
136 | q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
137 | if (!q) return CS_OUT_OF_RESOURCE; | |
138 | q->base = base; q->num = num; | |
139 | q->next = p->next; p->next = q; | |
140 | return CS_SUCCESS; | |
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); | |
172 | if (!p) return CS_OUT_OF_RESOURCE; | |
173 | p->base = base+num; | |
174 | p->num = q->base+q->num - p->base; | |
175 | q->num = base - q->base; | |
176 | p->next = q->next ; q->next = p; | |
177 | } | |
178 | } | |
179 | } | |
180 | return CS_SUCCESS; | |
181 | } | |
182 | ||
183 | /*====================================================================== | |
184 | ||
185 | These routines examine a region of IO or memory addresses to | |
186 | determine what ranges might be genuinely available. | |
187 | ||
188 | ======================================================================*/ | |
189 | ||
190 | #ifdef CONFIG_PCMCIA_PROBE | |
191 | static void do_io_probe(struct pcmcia_socket *s, kio_addr_t base, kio_addr_t num) | |
192 | { | |
193 | struct resource *res; | |
194 | struct socket_data *s_data = s->resource_data; | |
195 | kio_addr_t i, j, bad; | |
196 | int any; | |
197 | u_char *b, hole, most; | |
198 | ||
199 | printk(KERN_INFO "cs: IO port probe %#lx-%#lx:", | |
200 | base, base+num-1); | |
201 | ||
202 | /* First, what does a floating port look like? */ | |
203 | b = kmalloc(256, GFP_KERNEL); | |
204 | if (!b) { | |
205 | printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes"); | |
206 | return; | |
207 | } | |
208 | memset(b, 0, 256); | |
209 | for (i = base, most = 0; i < base+num; i += 8) { | |
210 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
211 | if (!res) | |
212 | continue; | |
213 | hole = inb(i); | |
214 | for (j = 1; j < 8; j++) | |
215 | if (inb(i+j) != hole) break; | |
216 | free_region(res); | |
217 | if ((j == 8) && (++b[hole] > b[most])) | |
218 | most = hole; | |
219 | if (b[most] == 127) break; | |
220 | } | |
221 | kfree(b); | |
222 | ||
223 | bad = any = 0; | |
224 | for (i = base; i < base+num; i += 8) { | |
225 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); | |
226 | if (!res) | |
227 | continue; | |
228 | for (j = 0; j < 8; j++) | |
229 | if (inb(i+j) != most) break; | |
230 | free_region(res); | |
231 | if (j < 8) { | |
232 | if (!any) | |
233 | printk(" excluding"); | |
234 | if (!bad) | |
235 | bad = any = i; | |
236 | } else { | |
237 | if (bad) { | |
238 | sub_interval(&s_data->io_db, bad, i-bad); | |
239 | printk(" %#lx-%#lx", bad, i-1); | |
240 | bad = 0; | |
241 | } | |
242 | } | |
243 | } | |
244 | if (bad) { | |
245 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
246 | printk(" nothing: probe failed.\n"); | |
247 | return; | |
248 | } else { | |
249 | sub_interval(&s_data->io_db, bad, i-bad); | |
250 | printk(" %#lx-%#lx", bad, i-1); | |
251 | } | |
252 | } | |
253 | ||
254 | printk(any ? "\n" : " clean.\n"); | |
255 | } | |
256 | #endif | |
257 | ||
258 | /*====================================================================== | |
259 | ||
260 | This is tricky... when we set up CIS memory, we try to validate | |
261 | the memory window space allocations. | |
262 | ||
263 | ======================================================================*/ | |
264 | ||
265 | /* Validation function for cards with a valid CIS */ | |
266 | static int readable(struct pcmcia_socket *s, struct resource *res, cisinfo_t *info) | |
267 | { | |
268 | int ret = -1; | |
269 | ||
270 | s->cis_mem.res = res; | |
271 | s->cis_virt = ioremap(res->start, s->map_size); | |
272 | if (s->cis_virt) { | |
273 | ret = pccard_validate_cis(s, BIND_FN_ALL, info); | |
274 | /* invalidate mapping and CIS cache */ | |
275 | iounmap(s->cis_virt); | |
276 | s->cis_virt = NULL; | |
277 | destroy_cis_cache(s); | |
278 | } | |
279 | s->cis_mem.res = NULL; | |
280 | if ((ret != 0) || (info->Chains == 0)) | |
281 | return 0; | |
282 | return 1; | |
283 | } | |
284 | ||
285 | /* Validation function for simple memory cards */ | |
286 | static int checksum(struct pcmcia_socket *s, struct resource *res) | |
287 | { | |
288 | pccard_mem_map map; | |
289 | int i, a = 0, b = -1, d; | |
290 | void __iomem *virt; | |
291 | ||
292 | virt = ioremap(res->start, s->map_size); | |
293 | if (virt) { | |
294 | map.map = 0; | |
295 | map.flags = MAP_ACTIVE; | |
296 | map.speed = 0; | |
297 | map.res = res; | |
298 | map.card_start = 0; | |
299 | s->ops->set_mem_map(s, &map); | |
300 | ||
301 | /* Don't bother checking every word... */ | |
302 | for (i = 0; i < s->map_size; i += 44) { | |
303 | d = readl(virt+i); | |
304 | a += d; | |
305 | b &= d; | |
306 | } | |
307 | ||
308 | map.flags = 0; | |
309 | s->ops->set_mem_map(s, &map); | |
310 | ||
311 | iounmap(virt); | |
312 | } | |
313 | ||
314 | return (b == -1) ? -1 : (a>>1); | |
315 | } | |
316 | ||
317 | static int | |
318 | cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
319 | { | |
320 | struct resource *res1, *res2; | |
321 | cisinfo_t info1, info2; | |
322 | int ret = 0; | |
323 | ||
324 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
325 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
326 | ||
327 | if (res1 && res2) { | |
328 | ret = readable(s, res1, &info1); | |
329 | ret += readable(s, res2, &info2); | |
330 | } | |
331 | ||
332 | free_region(res2); | |
333 | free_region(res1); | |
334 | ||
335 | return (ret == 2) && (info1.Chains == info2.Chains); | |
336 | } | |
337 | ||
338 | static int | |
339 | checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size) | |
340 | { | |
341 | struct resource *res1, *res2; | |
342 | int a = -1, b = -1; | |
343 | ||
344 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); | |
345 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); | |
346 | ||
347 | if (res1 && res2) { | |
348 | a = checksum(s, res1); | |
349 | b = checksum(s, res2); | |
350 | } | |
351 | ||
352 | free_region(res2); | |
353 | free_region(res1); | |
354 | ||
355 | return (a == b) && (a >= 0); | |
356 | } | |
357 | ||
358 | /*====================================================================== | |
359 | ||
360 | The memory probe. If the memory list includes a 64K-aligned block | |
361 | below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
362 | least mem_limit free space, we quit. | |
363 | ||
364 | ======================================================================*/ | |
365 | ||
366 | static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) | |
367 | { | |
368 | struct socket_data *s_data = s->resource_data; | |
369 | u_long i, j, bad, fail, step; | |
370 | ||
371 | printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:", | |
372 | base, base+num-1); | |
373 | bad = fail = 0; | |
374 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
2ad0a0a7 DB |
375 | /* don't allow too large steps */ |
376 | if (step > 0x800000) | |
377 | step = 0x800000; | |
1da177e4 LT |
378 | /* cis_readable wants to map 2x map_size */ |
379 | if (step < 2 * s->map_size) | |
380 | step = 2 * s->map_size; | |
381 | for (i = j = base; i < base+num; i = j + step) { | |
382 | if (!fail) { | |
383 | for (j = i; j < base+num; j += step) { | |
384 | if (cis_readable(s, j, step)) | |
385 | break; | |
386 | } | |
387 | fail = ((i == base) && (j == base+num)); | |
388 | } | |
389 | if (fail) { | |
390 | for (j = i; j < base+num; j += 2*step) | |
391 | if (checksum_match(s, j, step) && | |
392 | checksum_match(s, j + step, step)) | |
393 | break; | |
394 | } | |
395 | if (i != j) { | |
396 | if (!bad) printk(" excluding"); | |
397 | printk(" %#05lx-%#05lx", i, j-1); | |
398 | sub_interval(&s_data->mem_db, i, j-i); | |
399 | bad += j-i; | |
400 | } | |
401 | } | |
402 | printk(bad ? "\n" : " clean.\n"); | |
403 | return (num - bad); | |
404 | } | |
405 | ||
406 | #ifdef CONFIG_PCMCIA_PROBE | |
407 | ||
408 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) | |
409 | { | |
de75914e DB |
410 | struct socket_data *s_data = s->resource_data; |
411 | u_long ok; | |
412 | if (m == &s_data->mem_db) | |
413 | return 0; | |
414 | ok = inv_probe(m->next, s); | |
415 | if (ok) { | |
416 | if (m->base >= 0x100000) | |
417 | sub_interval(&s_data->mem_db, m->base, m->num); | |
418 | return ok; | |
419 | } | |
420 | if (m->base < 0x100000) | |
421 | return 0; | |
422 | return do_mem_probe(m->base, m->num, s); | |
1da177e4 LT |
423 | } |
424 | ||
de75914e | 425 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 426 | { |
de75914e DB |
427 | struct resource_map *m, mm; |
428 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
429 | unsigned long b, i, ok = 0; | |
430 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 431 | |
de75914e DB |
432 | /* We do up to four passes through the list */ |
433 | if (probe_mask & MEM_PROBE_HIGH) { | |
434 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
435 | return 0; | |
436 | printk(KERN_NOTICE "cs: warning: no high memory space " | |
437 | "available!\n"); | |
438 | return -ENODEV; | |
1da177e4 | 439 | } |
de75914e DB |
440 | |
441 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
442 | mm = *m; | |
443 | /* Only probe < 1 MB */ | |
444 | if (mm.base >= 0x100000) | |
445 | continue; | |
446 | if ((mm.base | mm.num) & 0xffff) { | |
447 | ok += do_mem_probe(mm.base, mm.num, s); | |
448 | continue; | |
449 | } | |
450 | /* Special probe for 64K-aligned block */ | |
451 | for (i = 0; i < 4; i++) { | |
452 | b = order[i] << 12; | |
453 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
454 | if (ok >= mem_limit) | |
455 | sub_interval(&s_data->mem_db, b, 0x10000); | |
456 | else | |
457 | ok += do_mem_probe(b, 0x10000, s); | |
458 | } | |
459 | } | |
1da177e4 | 460 | } |
de75914e DB |
461 | |
462 | if (ok > 0) | |
463 | return 0; | |
464 | ||
465 | return -ENODEV; | |
1da177e4 LT |
466 | } |
467 | ||
468 | #else /* CONFIG_PCMCIA_PROBE */ | |
469 | ||
470 | static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) | |
471 | { | |
472 | struct resource_map *m, mm; | |
473 | struct socket_data *s_data = s->resource_data; | |
474 | ||
475 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
476 | mm = *m; | |
2ad0a0a7 | 477 | do_mem_probe(mm.base, mm.num, s); |
1da177e4 LT |
478 | } |
479 | } | |
480 | ||
481 | #endif /* CONFIG_PCMCIA_PROBE */ | |
482 | ||
483 | ||
484 | /* | |
485 | * Locking note: Must be called with skt_sem held! | |
486 | */ | |
de75914e | 487 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
488 | { |
489 | struct socket_data *s_data = s->resource_data; | |
de75914e DB |
490 | unsigned int probe_mask = MEM_PROBE_LOW; |
491 | int ret = 0; | |
492 | ||
493 | if (!probe_mem) | |
494 | return 0; | |
1da177e4 | 495 | |
de75914e | 496 | down(&rsrc_sem); |
1da177e4 | 497 | |
de75914e DB |
498 | if (s->features & SS_CAP_PAGE_REGS) |
499 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 500 | |
de75914e DB |
501 | if (probe_mask & ~s_data->rsrc_mem_probe) { |
502 | if (s->state & SOCKET_PRESENT) | |
503 | ret = validate_mem(s, probe_mask); | |
504 | if (!ret) | |
1da177e4 | 505 | s_data->rsrc_mem_probe |= probe_mask; |
de75914e | 506 | } |
1da177e4 | 507 | |
de75914e | 508 | up(&rsrc_sem); |
1da177e4 | 509 | |
de75914e | 510 | return ret; |
1da177e4 LT |
511 | } |
512 | ||
513 | struct pcmcia_align_data { | |
514 | unsigned long mask; | |
515 | unsigned long offset; | |
516 | struct resource_map *map; | |
517 | }; | |
518 | ||
519 | static void | |
520 | pcmcia_common_align(void *align_data, struct resource *res, | |
521 | unsigned long size, unsigned long align) | |
522 | { | |
523 | struct pcmcia_align_data *data = align_data; | |
524 | unsigned long start; | |
525 | /* | |
526 | * Ensure that we have the correct start address | |
527 | */ | |
528 | start = (res->start & ~data->mask) + data->offset; | |
529 | if (start < res->start) | |
530 | start += data->mask + 1; | |
531 | res->start = start; | |
532 | } | |
533 | ||
534 | static void | |
535 | pcmcia_align(void *align_data, struct resource *res, | |
536 | unsigned long size, unsigned long align) | |
537 | { | |
538 | struct pcmcia_align_data *data = align_data; | |
539 | struct resource_map *m; | |
540 | ||
541 | pcmcia_common_align(data, res, size, align); | |
542 | ||
543 | for (m = data->map->next; m != data->map; m = m->next) { | |
544 | unsigned long start = m->base; | |
545 | unsigned long end = m->base + m->num - 1; | |
546 | ||
547 | /* | |
548 | * If the lower resources are not available, try aligning | |
549 | * to this entry of the resource database to see if it'll | |
550 | * fit here. | |
551 | */ | |
552 | if (res->start < start) { | |
553 | res->start = start; | |
554 | pcmcia_common_align(data, res, size, align); | |
555 | } | |
556 | ||
557 | /* | |
558 | * If we're above the area which was passed in, there's | |
559 | * no point proceeding. | |
560 | */ | |
561 | if (res->start >= res->end) | |
562 | break; | |
563 | ||
564 | if ((res->start + size - 1) <= end) | |
565 | break; | |
566 | } | |
567 | ||
568 | /* | |
569 | * If we failed to find something suitable, ensure we fail. | |
570 | */ | |
571 | if (m == data->map) | |
572 | res->start = res->end; | |
573 | } | |
574 | ||
575 | /* | |
576 | * Adjust an existing IO region allocation, but making sure that we don't | |
577 | * encroach outside the resources which the user supplied. | |
578 | */ | |
579 | static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, | |
580 | unsigned long r_end, struct pcmcia_socket *s) | |
581 | { | |
582 | struct resource_map *m; | |
583 | struct socket_data *s_data = s->resource_data; | |
584 | int ret = -ENOMEM; | |
585 | ||
586 | down(&rsrc_sem); | |
587 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { | |
588 | unsigned long start = m->base; | |
589 | unsigned long end = m->base + m->num - 1; | |
590 | ||
591 | if (start > r_start || r_end > end) | |
592 | continue; | |
593 | ||
594 | ret = adjust_resource(res, r_start, r_end - r_start + 1); | |
595 | break; | |
596 | } | |
597 | up(&rsrc_sem); | |
598 | ||
599 | return ret; | |
600 | } | |
601 | ||
602 | /*====================================================================== | |
603 | ||
604 | These find ranges of I/O ports or memory addresses that are not | |
605 | currently allocated by other devices. | |
606 | ||
607 | The 'align' field should reflect the number of bits of address | |
608 | that need to be preserved from the initial value of *base. It | |
609 | should be a power of two, greater than or equal to 'num'. A value | |
610 | of 0 means that all bits of *base are significant. *base should | |
611 | also be strictly less than 'align'. | |
612 | ||
613 | ======================================================================*/ | |
614 | ||
e94e15f7 | 615 | static struct resource *nonstatic_find_io_region(unsigned long base, int num, |
1da177e4 LT |
616 | unsigned long align, struct pcmcia_socket *s) |
617 | { | |
618 | struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.class_id); | |
619 | struct socket_data *s_data = s->resource_data; | |
620 | struct pcmcia_align_data data; | |
621 | unsigned long min = base; | |
622 | int ret; | |
623 | ||
624 | if (align == 0) | |
625 | align = 0x10000; | |
626 | ||
627 | data.mask = align - 1; | |
628 | data.offset = base & data.mask; | |
629 | data.map = &s_data->io_db; | |
630 | ||
631 | down(&rsrc_sem); | |
632 | #ifdef CONFIG_PCI | |
633 | if (s->cb_dev) { | |
634 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
635 | min, 0, pcmcia_align, &data); | |
636 | } else | |
637 | #endif | |
638 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
639 | 1, pcmcia_align, &data); | |
640 | up(&rsrc_sem); | |
641 | ||
642 | if (ret != 0) { | |
643 | kfree(res); | |
644 | res = NULL; | |
645 | } | |
646 | return res; | |
647 | } | |
648 | ||
e94e15f7 DB |
649 | static struct resource * nonstatic_find_mem_region(u_long base, u_long num, |
650 | u_long align, int low, struct pcmcia_socket *s) | |
1da177e4 LT |
651 | { |
652 | struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.class_id); | |
653 | struct socket_data *s_data = s->resource_data; | |
654 | struct pcmcia_align_data data; | |
655 | unsigned long min, max; | |
656 | int ret, i; | |
657 | ||
658 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
659 | ||
660 | data.mask = align - 1; | |
661 | data.offset = base & data.mask; | |
662 | data.map = &s_data->mem_db; | |
663 | ||
664 | for (i = 0; i < 2; i++) { | |
665 | if (low) { | |
666 | max = 0x100000UL; | |
667 | min = base < max ? base : 0; | |
668 | } else { | |
669 | max = ~0UL; | |
670 | min = 0x100000UL + base; | |
671 | } | |
672 | ||
673 | down(&rsrc_sem); | |
674 | #ifdef CONFIG_PCI | |
675 | if (s->cb_dev) { | |
676 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, | |
677 | 1, min, 0, | |
678 | pcmcia_align, &data); | |
679 | } else | |
680 | #endif | |
681 | ret = allocate_resource(&iomem_resource, res, num, min, | |
682 | max, 1, pcmcia_align, &data); | |
683 | up(&rsrc_sem); | |
684 | if (ret == 0 || low) | |
685 | break; | |
686 | low = 1; | |
687 | } | |
688 | ||
689 | if (ret != 0) { | |
690 | kfree(res); | |
691 | res = NULL; | |
692 | } | |
693 | return res; | |
694 | } | |
695 | ||
696 | ||
22916638 | 697 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 698 | { |
1da177e4 | 699 | struct socket_data *data = s->resource_data; |
22916638 DB |
700 | unsigned long size = end - start + 1; |
701 | int ret = 0; | |
1da177e4 | 702 | |
1146bc74 | 703 | if (end < start) |
22916638 | 704 | return -EINVAL; |
1da177e4 LT |
705 | |
706 | down(&rsrc_sem); | |
22916638 | 707 | switch (action) { |
1da177e4 | 708 | case ADD_MANAGED_RESOURCE: |
22916638 | 709 | ret = add_interval(&data->mem_db, start, size); |
1da177e4 LT |
710 | break; |
711 | case REMOVE_MANAGED_RESOURCE: | |
22916638 DB |
712 | ret = sub_interval(&data->mem_db, start, size); |
713 | if (!ret) { | |
1da177e4 LT |
714 | struct pcmcia_socket *socket; |
715 | down_read(&pcmcia_socket_list_rwsem); | |
716 | list_for_each_entry(socket, &pcmcia_socket_list, socket_list) | |
717 | release_cis_mem(socket); | |
718 | up_read(&pcmcia_socket_list_rwsem); | |
719 | } | |
720 | break; | |
721 | default: | |
22916638 | 722 | ret = -EINVAL; |
1da177e4 LT |
723 | } |
724 | up(&rsrc_sem); | |
725 | ||
726 | return ret; | |
727 | } | |
728 | ||
729 | ||
22916638 | 730 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
731 | { |
732 | struct socket_data *data = s->resource_data; | |
22916638 DB |
733 | unsigned long size = end - start + 1; |
734 | int ret = 0; | |
1da177e4 | 735 | |
1146bc74 | 736 | if (end < start) |
22916638 DB |
737 | return -EINVAL; |
738 | ||
739 | if (end > IO_SPACE_LIMIT) | |
740 | return -EINVAL; | |
1da177e4 LT |
741 | |
742 | down(&rsrc_sem); | |
22916638 | 743 | switch (action) { |
1da177e4 | 744 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
745 | if (add_interval(&data->io_db, start, size) != 0) { |
746 | ret = -EBUSY; | |
1da177e4 LT |
747 | break; |
748 | } | |
749 | #ifdef CONFIG_PCMCIA_PROBE | |
750 | if (probe_io) | |
22916638 | 751 | do_io_probe(s, start, size); |
1da177e4 LT |
752 | #endif |
753 | break; | |
754 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 755 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
756 | break; |
757 | default: | |
22916638 | 758 | ret = -EINVAL; |
1da177e4 LT |
759 | break; |
760 | } | |
761 | up(&rsrc_sem); | |
762 | ||
763 | return ret; | |
764 | } | |
765 | ||
766 | ||
767 | static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj) | |
768 | { | |
22916638 DB |
769 | unsigned long end; |
770 | ||
1da177e4 LT |
771 | switch (adj->Resource) { |
772 | case RES_MEMORY_RANGE: | |
22916638 DB |
773 | end = adj->resource.memory.Base + adj->resource.memory.Size - 1; |
774 | return adjust_memory(s, adj->Action, adj->resource.memory.Base, end); | |
1da177e4 | 775 | case RES_IO_RANGE: |
22916638 DB |
776 | end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; |
777 | return adjust_io(s, adj->Action, adj->resource.io.BasePort, end); | |
1da177e4 LT |
778 | } |
779 | return CS_UNSUPPORTED_FUNCTION; | |
780 | } | |
781 | ||
3c29976a DB |
782 | #ifdef CONFIG_PCI |
783 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
784 | { | |
785 | struct resource *res; | |
786 | int i, done = 0; | |
787 | ||
788 | if (!s->cb_dev || !s->cb_dev->bus) | |
789 | return -ENODEV; | |
790 | ||
0d078f6f | 791 | #if defined(CONFIG_X86) |
b6d00f0d DB |
792 | /* If this is the root bus, the risk of hitting |
793 | * some strange system devices which aren't protected | |
794 | * by either ACPI resource tables or properly requested | |
795 | * resources is too big. Therefore, don't do auto-adding | |
796 | * of resources at the moment. | |
797 | */ | |
798 | if (s->cb_dev->bus->number == 0) | |
799 | return -EINVAL; | |
800 | #endif | |
801 | ||
3c29976a DB |
802 | for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) { |
803 | res = s->cb_dev->bus->resource[i]; | |
804 | if (!res) | |
805 | continue; | |
806 | ||
807 | if (res->flags & IORESOURCE_IO) { | |
808 | if (res == &ioport_resource) | |
809 | continue; | |
810 | printk(KERN_INFO "pcmcia: parent PCI bridge I/O window: 0x%lx - 0x%lx\n", | |
811 | res->start, res->end); | |
812 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) | |
813 | done |= IORESOURCE_IO; | |
814 | ||
815 | } | |
816 | ||
817 | if (res->flags & IORESOURCE_MEM) { | |
818 | if (res == &iomem_resource) | |
819 | continue; | |
820 | printk(KERN_INFO "pcmcia: parent PCI bridge Memory window: 0x%lx - 0x%lx\n", | |
821 | res->start, res->end); | |
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 | ||
849 | data = kmalloc(sizeof(struct socket_data), GFP_KERNEL); | |
850 | if (!data) | |
851 | return -ENOMEM; | |
852 | memset(data, 0, sizeof(struct socket_data)); | |
853 | ||
854 | data->mem_db.next = &data->mem_db; | |
855 | data->io_db.next = &data->io_db; | |
856 | ||
857 | s->resource_data = (void *) data; | |
858 | ||
3c29976a DB |
859 | nonstatic_autoadd_resources(s); |
860 | ||
1da177e4 LT |
861 | return 0; |
862 | } | |
863 | ||
864 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
865 | { | |
866 | struct socket_data *data = s->resource_data; | |
867 | struct resource_map *p, *q; | |
868 | ||
869 | down(&rsrc_sem); | |
870 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { | |
871 | q = p->next; | |
872 | kfree(p); | |
873 | } | |
874 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
875 | q = p->next; | |
876 | kfree(p); | |
877 | } | |
878 | up(&rsrc_sem); | |
879 | } | |
880 | ||
881 | ||
882 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
883 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
884 | .adjust_io_region = nonstatic_adjust_io_region, | |
885 | .find_io = nonstatic_find_io_region, | |
886 | .find_mem = nonstatic_find_mem_region, | |
887 | .adjust_resource = nonstatic_adjust_resource_info, | |
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 | ||
896 | static ssize_t show_io_db(struct class_device *class_dev, char *buf) | |
897 | { | |
898 | struct pcmcia_socket *s = class_get_devdata(class_dev); | |
899 | struct socket_data *data; | |
900 | struct resource_map *p; | |
901 | ssize_t ret = 0; | |
902 | ||
903 | down(&rsrc_sem); | |
904 | data = s->resource_data; | |
905 | ||
906 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
907 | if (ret > (PAGE_SIZE - 10)) | |
908 | continue; | |
909 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
910 | "0x%08lx - 0x%08lx\n", | |
911 | ((unsigned long) p->base), | |
912 | ((unsigned long) p->base + p->num - 1)); | |
913 | } | |
914 | ||
915 | up(&rsrc_sem); | |
916 | return (ret); | |
917 | } | |
918 | ||
919 | static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size_t count) | |
920 | { | |
921 | struct pcmcia_socket *s = class_get_devdata(class_dev); | |
922 | unsigned long start_addr, end_addr; | |
22916638 | 923 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
924 | ssize_t ret = 0; |
925 | ||
926 | ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); | |
927 | if (ret != 2) { | |
928 | ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 929 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 LT |
930 | if (ret != 2) { |
931 | ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); | |
22916638 | 932 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
933 | if (ret != 2) |
934 | return -EINVAL; | |
935 | } | |
936 | } | |
1146bc74 | 937 | if (end_addr < start_addr) |
1da177e4 LT |
938 | return -EINVAL; |
939 | ||
22916638 | 940 | ret = adjust_io(s, add, start_addr, end_addr); |
3c29976a DB |
941 | if (!ret) |
942 | s->resource_setup_new = 1; | |
1da177e4 LT |
943 | |
944 | return ret ? ret : count; | |
945 | } | |
946 | static CLASS_DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); | |
947 | ||
948 | static ssize_t show_mem_db(struct class_device *class_dev, char *buf) | |
949 | { | |
950 | struct pcmcia_socket *s = class_get_devdata(class_dev); | |
951 | struct socket_data *data; | |
952 | struct resource_map *p; | |
953 | ssize_t ret = 0; | |
954 | ||
955 | down(&rsrc_sem); | |
956 | data = s->resource_data; | |
957 | ||
958 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { | |
959 | if (ret > (PAGE_SIZE - 10)) | |
960 | continue; | |
961 | ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), | |
962 | "0x%08lx - 0x%08lx\n", | |
963 | ((unsigned long) p->base), | |
964 | ((unsigned long) p->base + p->num - 1)); | |
965 | } | |
966 | ||
967 | up(&rsrc_sem); | |
968 | return (ret); | |
969 | } | |
970 | ||
971 | static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, size_t count) | |
972 | { | |
973 | struct pcmcia_socket *s = class_get_devdata(class_dev); | |
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 | } | |
998 | static CLASS_DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); | |
999 | ||
1000 | static struct class_device_attribute *pccard_rsrc_attributes[] = { | |
1001 | &class_device_attr_available_resources_io, | |
1002 | &class_device_attr_available_resources_mem, | |
1003 | NULL, | |
1004 | }; | |
1005 | ||
d8539d81 DT |
1006 | static int __devinit pccard_sysfs_add_rsrc(struct class_device *class_dev, |
1007 | struct class_interface *class_intf) | |
1da177e4 LT |
1008 | { |
1009 | struct pcmcia_socket *s = class_get_devdata(class_dev); | |
1010 | struct class_device_attribute **attr; | |
1011 | int ret = 0; | |
1012 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1013 | return 0; | |
1014 | ||
1015 | for (attr = pccard_rsrc_attributes; *attr; attr++) { | |
1016 | ret = class_device_create_file(class_dev, *attr); | |
1017 | if (ret) | |
1018 | break; | |
1019 | } | |
1020 | ||
1021 | return ret; | |
1022 | } | |
1023 | ||
d8539d81 DT |
1024 | static void __devexit pccard_sysfs_remove_rsrc(struct class_device *class_dev, |
1025 | struct class_interface *class_intf) | |
1da177e4 LT |
1026 | { |
1027 | struct pcmcia_socket *s = class_get_devdata(class_dev); | |
1028 | struct class_device_attribute **attr; | |
1029 | ||
1030 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1031 | return; | |
1032 | ||
1033 | for (attr = pccard_rsrc_attributes; *attr; attr++) | |
1034 | class_device_remove_file(class_dev, *attr); | |
1035 | } | |
1036 | ||
1037 | static struct class_interface pccard_rsrc_interface = { | |
1038 | .class = &pcmcia_socket_class, | |
1039 | .add = &pccard_sysfs_add_rsrc, | |
1040 | .remove = __devexit_p(&pccard_sysfs_remove_rsrc), | |
1041 | }; | |
1042 | ||
1043 | static int __init nonstatic_sysfs_init(void) | |
1044 | { | |
1045 | return class_interface_register(&pccard_rsrc_interface); | |
1046 | } | |
1047 | ||
1048 | static void __exit nonstatic_sysfs_exit(void) | |
1049 | { | |
1050 | class_interface_unregister(&pccard_rsrc_interface); | |
1051 | } | |
1052 | ||
1053 | module_init(nonstatic_sysfs_init); | |
1054 | module_exit(nonstatic_sysfs_exit); |