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> | |
9fea84f4 | 27 | #include <linux/io.h> |
1da177e4 LT |
28 | |
29 | #include <asm/irq.h> | |
1da177e4 LT |
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 | ||
1da177e4 LT |
62 | #define MEM_PROBE_LOW (1 << 0) |
63 | #define MEM_PROBE_HIGH (1 << 1) | |
64 | ||
65 | ||
66 | /*====================================================================== | |
67 | ||
68 | Linux resource management extensions | |
69 | ||
70 | ======================================================================*/ | |
71 | ||
72 | static struct resource * | |
25096986 | 73 | make_resource(resource_size_t b, resource_size_t n, int flags, const char *name) |
1da177e4 | 74 | { |
8084b372 | 75 | struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); |
1da177e4 LT |
76 | |
77 | if (res) { | |
1da177e4 LT |
78 | res->name = name; |
79 | res->start = b; | |
80 | res->end = b + n - 1; | |
81 | res->flags = flags; | |
82 | } | |
83 | return res; | |
84 | } | |
85 | ||
86 | static struct resource * | |
2427ddd8 GKH |
87 | claim_region(struct pcmcia_socket *s, resource_size_t base, |
88 | resource_size_t size, int type, char *name) | |
1da177e4 LT |
89 | { |
90 | struct resource *res, *parent; | |
91 | ||
92 | parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; | |
93 | res = make_resource(base, size, type | IORESOURCE_BUSY, name); | |
94 | ||
95 | if (res) { | |
96 | #ifdef CONFIG_PCI | |
97 | if (s && s->cb_dev) | |
98 | parent = pci_find_parent_resource(s->cb_dev, res); | |
99 | #endif | |
100 | if (!parent || request_resource(parent, res)) { | |
101 | kfree(res); | |
102 | res = NULL; | |
103 | } | |
104 | } | |
105 | return res; | |
106 | } | |
107 | ||
108 | static void free_region(struct resource *res) | |
109 | { | |
110 | if (res) { | |
111 | release_resource(res); | |
112 | kfree(res); | |
113 | } | |
114 | } | |
115 | ||
116 | /*====================================================================== | |
117 | ||
118 | These manage the internal databases of available resources. | |
119 | ||
120 | ======================================================================*/ | |
121 | ||
122 | static int add_interval(struct resource_map *map, u_long base, u_long num) | |
123 | { | |
1168386a | 124 | struct resource_map *p, *q; |
1da177e4 | 125 | |
1168386a DB |
126 | for (p = map; ; p = p->next) { |
127 | if ((p != map) && (p->base+p->num-1 >= base)) | |
128 | return -1; | |
129 | if ((p->next == map) || (p->next->base > base+num-1)) | |
130 | break; | |
131 | } | |
132 | q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
133 | if (!q) { | |
134 | printk(KERN_WARNING "out of memory to update resources\n"); | |
135 | return -ENOMEM; | |
136 | } | |
137 | q->base = base; q->num = num; | |
138 | q->next = p->next; p->next = q; | |
139 | return 0; | |
1da177e4 LT |
140 | } |
141 | ||
142 | /*====================================================================*/ | |
143 | ||
144 | static int sub_interval(struct resource_map *map, u_long base, u_long num) | |
145 | { | |
9fea84f4 DB |
146 | struct resource_map *p, *q; |
147 | ||
148 | for (p = map; ; p = q) { | |
149 | q = p->next; | |
150 | if (q == map) | |
151 | break; | |
152 | if ((q->base+q->num > base) && (base+num > q->base)) { | |
153 | if (q->base >= base) { | |
154 | if (q->base+q->num <= base+num) { | |
155 | /* Delete whole block */ | |
156 | p->next = q->next; | |
157 | kfree(q); | |
158 | /* don't advance the pointer yet */ | |
159 | q = p; | |
160 | } else { | |
161 | /* Cut off bit from the front */ | |
162 | q->num = q->base + q->num - base - num; | |
163 | q->base = base + num; | |
164 | } | |
165 | } else if (q->base+q->num <= base+num) { | |
166 | /* Cut off bit from the end */ | |
167 | q->num = base - q->base; | |
168 | } else { | |
169 | /* Split the block into two pieces */ | |
170 | p = kmalloc(sizeof(struct resource_map), | |
171 | GFP_KERNEL); | |
172 | if (!p) { | |
173 | printk(KERN_WARNING "out of memory to update resources\n"); | |
174 | return -ENOMEM; | |
175 | } | |
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 | } | |
1168386a | 181 | } |
9fea84f4 DB |
182 | } |
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 | 196 | { |
9fea84f4 DB |
197 | struct resource *res; |
198 | struct socket_data *s_data = s->resource_data; | |
199 | unsigned int i, j, bad; | |
200 | int any; | |
201 | u_char *b, hole, most; | |
202 | ||
203 | dev_printk(KERN_INFO, &s->dev, "cs: IO port probe %#x-%#x:", | |
204 | base, base+num-1); | |
205 | ||
206 | /* First, what does a floating port look like? */ | |
207 | b = kzalloc(256, GFP_KERNEL); | |
208 | if (!b) { | |
209 | printk("\n"); | |
210 | dev_printk(KERN_ERR, &s->dev, | |
211 | "do_io_probe: unable to kmalloc 256 bytes"); | |
212 | return; | |
213 | } | |
214 | for (i = base, most = 0; i < base+num; i += 8) { | |
215 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); | |
216 | if (!res) | |
217 | continue; | |
218 | hole = inb(i); | |
219 | for (j = 1; j < 8; j++) | |
220 | if (inb(i+j) != hole) | |
221 | break; | |
222 | free_region(res); | |
223 | if ((j == 8) && (++b[hole] > b[most])) | |
224 | most = hole; | |
225 | if (b[most] == 127) | |
226 | break; | |
227 | } | |
228 | kfree(b); | |
229 | ||
230 | bad = any = 0; | |
231 | for (i = base; i < base+num; i += 8) { | |
232 | res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); | |
233 | if (!res) | |
234 | continue; | |
235 | for (j = 0; j < 8; j++) | |
236 | if (inb(i+j) != most) | |
237 | break; | |
238 | free_region(res); | |
239 | if (j < 8) { | |
240 | if (!any) | |
241 | printk(" excluding"); | |
242 | if (!bad) | |
243 | bad = any = i; | |
244 | } else { | |
245 | if (bad) { | |
246 | sub_interval(&s_data->io_db, bad, i-bad); | |
247 | printk(" %#x-%#x", bad, i-1); | |
248 | bad = 0; | |
249 | } | |
250 | } | |
251 | } | |
252 | if (bad) { | |
253 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
254 | printk(" nothing: probe failed.\n"); | |
255 | return; | |
256 | } else { | |
257 | sub_interval(&s_data->io_db, bad, i-bad); | |
258 | printk(" %#x-%#x", bad, i-1); | |
259 | } | |
260 | } | |
261 | ||
262 | printk(any ? "\n" : " clean.\n"); | |
1da177e4 LT |
263 | } |
264 | #endif | |
265 | ||
3f32b3c0 | 266 | /*======================================================================*/ |
1da177e4 | 267 | |
3f32b3c0 DB |
268 | /** |
269 | * readable() - iomem validation function for cards with a valid CIS | |
270 | */ | |
c5081d5f DB |
271 | static int readable(struct pcmcia_socket *s, struct resource *res, |
272 | unsigned int *count) | |
1da177e4 | 273 | { |
3f32b3c0 | 274 | int ret = -EINVAL; |
1da177e4 | 275 | |
7ab24855 DB |
276 | if (s->fake_cis) { |
277 | dev_dbg(&s->dev, "fake CIS is being used: can't validate mem\n"); | |
278 | return 0; | |
279 | } | |
280 | ||
1da177e4 LT |
281 | s->cis_mem.res = res; |
282 | s->cis_virt = ioremap(res->start, s->map_size); | |
283 | if (s->cis_virt) { | |
6b8e087b | 284 | mutex_unlock(&s->ops_mutex); |
6e7b51a7 DB |
285 | /* as we're only called from pcmcia.c, we're safe */ |
286 | if (s->callback->validate) | |
287 | ret = s->callback->validate(s, count); | |
904e3777 | 288 | /* invalidate mapping */ |
6b8e087b | 289 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
290 | iounmap(s->cis_virt); |
291 | s->cis_virt = NULL; | |
1da177e4 LT |
292 | } |
293 | s->cis_mem.res = NULL; | |
3f32b3c0 DB |
294 | if ((ret) || (*count == 0)) |
295 | return -EINVAL; | |
296 | return 0; | |
1da177e4 LT |
297 | } |
298 | ||
3f32b3c0 DB |
299 | /** |
300 | * checksum() - iomem validation function for simple memory cards | |
301 | */ | |
302 | static int checksum(struct pcmcia_socket *s, struct resource *res, | |
303 | unsigned int *value) | |
1da177e4 LT |
304 | { |
305 | pccard_mem_map map; | |
306 | int i, a = 0, b = -1, d; | |
307 | void __iomem *virt; | |
308 | ||
309 | virt = ioremap(res->start, s->map_size); | |
310 | if (virt) { | |
311 | map.map = 0; | |
312 | map.flags = MAP_ACTIVE; | |
313 | map.speed = 0; | |
314 | map.res = res; | |
315 | map.card_start = 0; | |
316 | s->ops->set_mem_map(s, &map); | |
317 | ||
318 | /* Don't bother checking every word... */ | |
319 | for (i = 0; i < s->map_size; i += 44) { | |
320 | d = readl(virt+i); | |
321 | a += d; | |
322 | b &= d; | |
323 | } | |
324 | ||
325 | map.flags = 0; | |
326 | s->ops->set_mem_map(s, &map); | |
327 | ||
328 | iounmap(virt); | |
329 | } | |
330 | ||
3f32b3c0 DB |
331 | if (b == -1) |
332 | return -EINVAL; | |
1da177e4 | 333 | |
3f32b3c0 | 334 | *value = a; |
1da177e4 | 335 | |
3f32b3c0 | 336 | return 0; |
1da177e4 LT |
337 | } |
338 | ||
3f32b3c0 DB |
339 | /** |
340 | * do_validate_mem() - low level validate a memory region for PCMCIA use | |
341 | * @s: PCMCIA socket to validate | |
342 | * @base: start address of resource to check | |
343 | * @size: size of resource to check | |
344 | * @validate: validation function to use | |
345 | * | |
346 | * do_validate_mem() splits up the memory region which is to be checked | |
347 | * into two parts. Both are passed to the @validate() function. If | |
348 | * @validate() returns non-zero, or the value parameter to @validate() | |
349 | * is zero, or the value parameter is different between both calls, | |
350 | * the check fails, and -EINVAL is returned. Else, 0 is returned. | |
351 | */ | |
352 | static int do_validate_mem(struct pcmcia_socket *s, | |
353 | unsigned long base, unsigned long size, | |
354 | int validate (struct pcmcia_socket *s, | |
355 | struct resource *res, | |
356 | unsigned int *value)) | |
1da177e4 LT |
357 | { |
358 | struct resource *res1, *res2; | |
3f32b3c0 DB |
359 | unsigned int info1 = 1, info2 = 1; |
360 | int ret = -EINVAL; | |
1da177e4 | 361 | |
9fea84f4 DB |
362 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); |
363 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, | |
364 | "PCMCIA memprobe"); | |
1da177e4 LT |
365 | |
366 | if (res1 && res2) { | |
3f32b3c0 DB |
367 | ret = 0; |
368 | if (validate) { | |
369 | ret = validate(s, res1, &info1); | |
370 | ret += validate(s, res2, &info2); | |
371 | } | |
1da177e4 LT |
372 | } |
373 | ||
374 | free_region(res2); | |
375 | free_region(res1); | |
376 | ||
3f32b3c0 DB |
377 | dev_dbg(&s->dev, "cs: memory probe 0x%06lx-0x%06lx: %p %p %u %u %u", |
378 | base, base+size-1, res1, res2, ret, info1, info2); | |
1da177e4 | 379 | |
3f32b3c0 DB |
380 | if ((ret) || (info1 != info2) || (info1 == 0)) |
381 | return -EINVAL; | |
1da177e4 | 382 | |
3f32b3c0 DB |
383 | return 0; |
384 | } | |
1da177e4 | 385 | |
1da177e4 | 386 | |
3f32b3c0 DB |
387 | /** |
388 | * do_mem_probe() - validate a memory region for PCMCIA use | |
389 | * @s: PCMCIA socket to validate | |
390 | * @base: start address of resource to check | |
391 | * @num: size of resource to check | |
392 | * @validate: validation function to use | |
393 | * @fallback: validation function to use if validate fails | |
394 | * | |
395 | * do_mem_probe() checks a memory region for use by the PCMCIA subsystem. | |
396 | * To do so, the area is split up into sensible parts, and then passed | |
397 | * into the @validate() function. Only if @validate() and @fallback() fail, | |
398 | * the area is marked as unavaibale for use by the PCMCIA subsystem. The | |
399 | * function returns the size of the usable memory area. | |
400 | */ | |
401 | static int do_mem_probe(struct pcmcia_socket *s, u_long base, u_long num, | |
402 | int validate (struct pcmcia_socket *s, | |
403 | struct resource *res, | |
404 | unsigned int *value), | |
405 | int fallback (struct pcmcia_socket *s, | |
406 | struct resource *res, | |
407 | unsigned int *value)) | |
1da177e4 | 408 | { |
9fea84f4 DB |
409 | struct socket_data *s_data = s->resource_data; |
410 | u_long i, j, bad, fail, step; | |
411 | ||
412 | dev_printk(KERN_INFO, &s->dev, "cs: memory probe 0x%06lx-0x%06lx:", | |
413 | base, base+num-1); | |
414 | bad = fail = 0; | |
415 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
416 | /* don't allow too large steps */ | |
417 | if (step > 0x800000) | |
418 | step = 0x800000; | |
419 | /* cis_readable wants to map 2x map_size */ | |
420 | if (step < 2 * s->map_size) | |
421 | step = 2 * s->map_size; | |
422 | for (i = j = base; i < base+num; i = j + step) { | |
423 | if (!fail) { | |
424 | for (j = i; j < base+num; j += step) { | |
3f32b3c0 | 425 | if (!do_validate_mem(s, j, step, validate)) |
9fea84f4 DB |
426 | break; |
427 | } | |
428 | fail = ((i == base) && (j == base+num)); | |
429 | } | |
3f32b3c0 DB |
430 | if ((fail) && (fallback)) { |
431 | for (j = i; j < base+num; j += step) | |
432 | if (!do_validate_mem(s, j, step, fallback)) | |
9fea84f4 DB |
433 | break; |
434 | } | |
435 | if (i != j) { | |
436 | if (!bad) | |
437 | printk(" excluding"); | |
438 | printk(" %#05lx-%#05lx", i, j-1); | |
439 | sub_interval(&s_data->mem_db, i, j-i); | |
440 | bad += j-i; | |
441 | } | |
442 | } | |
443 | printk(bad ? "\n" : " clean.\n"); | |
444 | return num - bad; | |
1da177e4 LT |
445 | } |
446 | ||
3f32b3c0 | 447 | |
1da177e4 LT |
448 | #ifdef CONFIG_PCMCIA_PROBE |
449 | ||
3f32b3c0 DB |
450 | /** |
451 | * inv_probe() - top-to-bottom search for one usuable high memory area | |
452 | * @s: PCMCIA socket to validate | |
453 | * @m: resource_map to check | |
454 | */ | |
1da177e4 LT |
455 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) |
456 | { | |
de75914e DB |
457 | struct socket_data *s_data = s->resource_data; |
458 | u_long ok; | |
459 | if (m == &s_data->mem_db) | |
460 | return 0; | |
461 | ok = inv_probe(m->next, s); | |
462 | if (ok) { | |
463 | if (m->base >= 0x100000) | |
464 | sub_interval(&s_data->mem_db, m->base, m->num); | |
465 | return ok; | |
466 | } | |
467 | if (m->base < 0x100000) | |
468 | return 0; | |
3f32b3c0 | 469 | return do_mem_probe(s, m->base, m->num, readable, checksum); |
1da177e4 LT |
470 | } |
471 | ||
3f32b3c0 DB |
472 | /** |
473 | * validate_mem() - memory probe function | |
474 | * @s: PCMCIA socket to validate | |
475 | * @probe_mask: MEM_PROBE_LOW | MEM_PROBE_HIGH | |
476 | * | |
477 | * The memory probe. If the memory list includes a 64K-aligned block | |
478 | * below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
479 | * least mem_limit free space, we quit. Returns 0 on usuable ports. | |
480 | */ | |
de75914e | 481 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 482 | { |
de75914e DB |
483 | struct resource_map *m, mm; |
484 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
485 | unsigned long b, i, ok = 0; | |
486 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 487 | |
de75914e DB |
488 | /* We do up to four passes through the list */ |
489 | if (probe_mask & MEM_PROBE_HIGH) { | |
490 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
491 | return 0; | |
dbe4ea5f DB |
492 | dev_printk(KERN_NOTICE, &s->dev, |
493 | "cs: warning: no high memory space available!\n"); | |
de75914e | 494 | return -ENODEV; |
1da177e4 | 495 | } |
de75914e DB |
496 | |
497 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
498 | mm = *m; | |
499 | /* Only probe < 1 MB */ | |
500 | if (mm.base >= 0x100000) | |
501 | continue; | |
502 | if ((mm.base | mm.num) & 0xffff) { | |
3f32b3c0 DB |
503 | ok += do_mem_probe(s, mm.base, mm.num, readable, |
504 | checksum); | |
de75914e DB |
505 | continue; |
506 | } | |
507 | /* Special probe for 64K-aligned block */ | |
508 | for (i = 0; i < 4; i++) { | |
509 | b = order[i] << 12; | |
510 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
511 | if (ok >= mem_limit) | |
512 | sub_interval(&s_data->mem_db, b, 0x10000); | |
513 | else | |
3f32b3c0 DB |
514 | ok += do_mem_probe(s, b, 0x10000, |
515 | readable, checksum); | |
de75914e DB |
516 | } |
517 | } | |
1da177e4 | 518 | } |
de75914e DB |
519 | |
520 | if (ok > 0) | |
521 | return 0; | |
522 | ||
523 | return -ENODEV; | |
1da177e4 LT |
524 | } |
525 | ||
526 | #else /* CONFIG_PCMCIA_PROBE */ | |
527 | ||
3f32b3c0 DB |
528 | /** |
529 | * validate_mem() - memory probe function | |
530 | * @s: PCMCIA socket to validate | |
531 | * @probe_mask: ignored | |
532 | * | |
533 | * Returns 0 on usuable ports. | |
534 | */ | |
2cff9447 | 535 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 LT |
536 | { |
537 | struct resource_map *m, mm; | |
538 | struct socket_data *s_data = s->resource_data; | |
2cff9447 | 539 | unsigned long ok = 0; |
1da177e4 LT |
540 | |
541 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
542 | mm = *m; | |
3f32b3c0 | 543 | ok += do_mem_probe(s, mm.base, mm.num, readable, checksum); |
1da177e4 | 544 | } |
2cff9447 AM |
545 | if (ok > 0) |
546 | return 0; | |
547 | return -ENODEV; | |
1da177e4 LT |
548 | } |
549 | ||
550 | #endif /* CONFIG_PCMCIA_PROBE */ | |
551 | ||
552 | ||
3f32b3c0 DB |
553 | /** |
554 | * pcmcia_nonstatic_validate_mem() - try to validate iomem for PCMCIA use | |
555 | * @s: PCMCIA socket to validate | |
556 | * | |
557 | * This is tricky... when we set up CIS memory, we try to validate | |
558 | * the memory window space allocations. | |
559 | * | |
7fe908dd | 560 | * Locking note: Must be called with skt_mutex held! |
1da177e4 | 561 | */ |
de75914e | 562 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
563 | { |
564 | struct socket_data *s_data = s->resource_data; | |
de75914e DB |
565 | unsigned int probe_mask = MEM_PROBE_LOW; |
566 | int ret = 0; | |
567 | ||
568 | if (!probe_mem) | |
569 | return 0; | |
1da177e4 | 570 | |
de75914e DB |
571 | if (s->features & SS_CAP_PAGE_REGS) |
572 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 573 | |
de75914e | 574 | if (probe_mask & ~s_data->rsrc_mem_probe) { |
3f32b3c0 | 575 | if (s->state & SOCKET_PRESENT) { |
de75914e | 576 | ret = validate_mem(s, probe_mask); |
3f32b3c0 DB |
577 | if (!ret) |
578 | s_data->rsrc_mem_probe |= probe_mask; | |
579 | } | |
de75914e | 580 | } |
1da177e4 | 581 | |
de75914e | 582 | return ret; |
1da177e4 LT |
583 | } |
584 | ||
585 | struct pcmcia_align_data { | |
586 | unsigned long mask; | |
587 | unsigned long offset; | |
588 | struct resource_map *map; | |
589 | }; | |
590 | ||
591 | static void | |
592 | pcmcia_common_align(void *align_data, struct resource *res, | |
2427ddd8 | 593 | resource_size_t size, resource_size_t align) |
1da177e4 LT |
594 | { |
595 | struct pcmcia_align_data *data = align_data; | |
2427ddd8 | 596 | resource_size_t start; |
1da177e4 LT |
597 | /* |
598 | * Ensure that we have the correct start address | |
599 | */ | |
600 | start = (res->start & ~data->mask) + data->offset; | |
601 | if (start < res->start) | |
602 | start += data->mask + 1; | |
603 | res->start = start; | |
604 | } | |
605 | ||
606 | static void | |
2427ddd8 GKH |
607 | pcmcia_align(void *align_data, struct resource *res, resource_size_t size, |
608 | resource_size_t align) | |
1da177e4 LT |
609 | { |
610 | struct pcmcia_align_data *data = align_data; | |
611 | struct resource_map *m; | |
612 | ||
613 | pcmcia_common_align(data, res, size, align); | |
614 | ||
615 | for (m = data->map->next; m != data->map; m = m->next) { | |
616 | unsigned long start = m->base; | |
617 | unsigned long end = m->base + m->num - 1; | |
618 | ||
619 | /* | |
620 | * If the lower resources are not available, try aligning | |
621 | * to this entry of the resource database to see if it'll | |
622 | * fit here. | |
623 | */ | |
624 | if (res->start < start) { | |
625 | res->start = start; | |
626 | pcmcia_common_align(data, res, size, align); | |
627 | } | |
628 | ||
629 | /* | |
630 | * If we're above the area which was passed in, there's | |
631 | * no point proceeding. | |
632 | */ | |
633 | if (res->start >= res->end) | |
634 | break; | |
635 | ||
636 | if ((res->start + size - 1) <= end) | |
637 | break; | |
638 | } | |
639 | ||
640 | /* | |
641 | * If we failed to find something suitable, ensure we fail. | |
642 | */ | |
643 | if (m == data->map) | |
644 | res->start = res->end; | |
645 | } | |
646 | ||
647 | /* | |
648 | * Adjust an existing IO region allocation, but making sure that we don't | |
649 | * encroach outside the resources which the user supplied. | |
650 | */ | |
651 | static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, | |
652 | unsigned long r_end, struct pcmcia_socket *s) | |
653 | { | |
654 | struct resource_map *m; | |
655 | struct socket_data *s_data = s->resource_data; | |
656 | int ret = -ENOMEM; | |
657 | ||
1da177e4 LT |
658 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { |
659 | unsigned long start = m->base; | |
660 | unsigned long end = m->base + m->num - 1; | |
661 | ||
662 | if (start > r_start || r_end > end) | |
663 | continue; | |
664 | ||
665 | ret = adjust_resource(res, r_start, r_end - r_start + 1); | |
666 | break; | |
667 | } | |
1da177e4 LT |
668 | |
669 | return ret; | |
670 | } | |
671 | ||
672 | /*====================================================================== | |
673 | ||
674 | These find ranges of I/O ports or memory addresses that are not | |
675 | currently allocated by other devices. | |
676 | ||
677 | The 'align' field should reflect the number of bits of address | |
678 | that need to be preserved from the initial value of *base. It | |
679 | should be a power of two, greater than or equal to 'num'. A value | |
680 | of 0 means that all bits of *base are significant. *base should | |
681 | also be strictly less than 'align'. | |
682 | ||
683 | ======================================================================*/ | |
684 | ||
e94e15f7 | 685 | static struct resource *nonstatic_find_io_region(unsigned long base, int num, |
1da177e4 LT |
686 | unsigned long align, struct pcmcia_socket *s) |
687 | { | |
25096986 | 688 | struct resource *res = make_resource(0, num, IORESOURCE_IO, dev_name(&s->dev)); |
1da177e4 LT |
689 | struct socket_data *s_data = s->resource_data; |
690 | struct pcmcia_align_data data; | |
691 | unsigned long min = base; | |
692 | int ret; | |
693 | ||
694 | if (align == 0) | |
695 | align = 0x10000; | |
696 | ||
697 | data.mask = align - 1; | |
698 | data.offset = base & data.mask; | |
699 | data.map = &s_data->io_db; | |
700 | ||
1da177e4 LT |
701 | #ifdef CONFIG_PCI |
702 | if (s->cb_dev) { | |
703 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
704 | min, 0, pcmcia_align, &data); | |
705 | } else | |
706 | #endif | |
707 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
708 | 1, pcmcia_align, &data); | |
1da177e4 LT |
709 | |
710 | if (ret != 0) { | |
711 | kfree(res); | |
712 | res = NULL; | |
713 | } | |
714 | return res; | |
715 | } | |
716 | ||
9fea84f4 | 717 | static struct resource *nonstatic_find_mem_region(u_long base, u_long num, |
e94e15f7 | 718 | u_long align, int low, struct pcmcia_socket *s) |
1da177e4 | 719 | { |
25096986 | 720 | struct resource *res = make_resource(0, num, IORESOURCE_MEM, dev_name(&s->dev)); |
1da177e4 LT |
721 | struct socket_data *s_data = s->resource_data; |
722 | struct pcmcia_align_data data; | |
723 | unsigned long min, max; | |
724 | int ret, i; | |
725 | ||
726 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
727 | ||
728 | data.mask = align - 1; | |
729 | data.offset = base & data.mask; | |
730 | data.map = &s_data->mem_db; | |
731 | ||
732 | for (i = 0; i < 2; i++) { | |
733 | if (low) { | |
734 | max = 0x100000UL; | |
735 | min = base < max ? base : 0; | |
736 | } else { | |
737 | max = ~0UL; | |
738 | min = 0x100000UL + base; | |
739 | } | |
740 | ||
1da177e4 LT |
741 | #ifdef CONFIG_PCI |
742 | if (s->cb_dev) { | |
743 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, | |
744 | 1, min, 0, | |
745 | pcmcia_align, &data); | |
746 | } else | |
747 | #endif | |
748 | ret = allocate_resource(&iomem_resource, res, num, min, | |
749 | max, 1, pcmcia_align, &data); | |
1da177e4 LT |
750 | if (ret == 0 || low) |
751 | break; | |
752 | low = 1; | |
753 | } | |
754 | ||
755 | if (ret != 0) { | |
756 | kfree(res); | |
757 | res = NULL; | |
758 | } | |
759 | return res; | |
760 | } | |
761 | ||
762 | ||
22916638 | 763 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 764 | { |
1da177e4 | 765 | struct socket_data *data = s->resource_data; |
22916638 DB |
766 | unsigned long size = end - start + 1; |
767 | int ret = 0; | |
1da177e4 | 768 | |
1146bc74 | 769 | if (end < start) |
22916638 | 770 | return -EINVAL; |
1da177e4 | 771 | |
22916638 | 772 | switch (action) { |
1da177e4 | 773 | case ADD_MANAGED_RESOURCE: |
22916638 | 774 | ret = add_interval(&data->mem_db, start, size); |
3f32b3c0 DB |
775 | if (!ret) |
776 | do_mem_probe(s, start, size, NULL, NULL); | |
1da177e4 LT |
777 | break; |
778 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 779 | ret = sub_interval(&data->mem_db, start, size); |
1da177e4 LT |
780 | break; |
781 | default: | |
22916638 | 782 | ret = -EINVAL; |
1da177e4 | 783 | } |
1da177e4 LT |
784 | |
785 | return ret; | |
786 | } | |
787 | ||
788 | ||
22916638 | 789 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
790 | { |
791 | struct socket_data *data = s->resource_data; | |
22916638 DB |
792 | unsigned long size = end - start + 1; |
793 | int ret = 0; | |
1da177e4 | 794 | |
1146bc74 | 795 | if (end < start) |
22916638 DB |
796 | return -EINVAL; |
797 | ||
798 | if (end > IO_SPACE_LIMIT) | |
799 | return -EINVAL; | |
1da177e4 | 800 | |
22916638 | 801 | switch (action) { |
1da177e4 | 802 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
803 | if (add_interval(&data->io_db, start, size) != 0) { |
804 | ret = -EBUSY; | |
1da177e4 LT |
805 | break; |
806 | } | |
807 | #ifdef CONFIG_PCMCIA_PROBE | |
808 | if (probe_io) | |
22916638 | 809 | do_io_probe(s, start, size); |
1da177e4 LT |
810 | #endif |
811 | break; | |
812 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 813 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
814 | break; |
815 | default: | |
22916638 | 816 | ret = -EINVAL; |
1da177e4 LT |
817 | break; |
818 | } | |
1da177e4 LT |
819 | |
820 | return ret; | |
821 | } | |
822 | ||
823 | ||
3c29976a DB |
824 | #ifdef CONFIG_PCI |
825 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
826 | { | |
827 | struct resource *res; | |
828 | int i, done = 0; | |
829 | ||
830 | if (!s->cb_dev || !s->cb_dev->bus) | |
831 | return -ENODEV; | |
832 | ||
0d078f6f | 833 | #if defined(CONFIG_X86) |
b6d00f0d DB |
834 | /* If this is the root bus, the risk of hitting |
835 | * some strange system devices which aren't protected | |
836 | * by either ACPI resource tables or properly requested | |
837 | * resources is too big. Therefore, don't do auto-adding | |
838 | * of resources at the moment. | |
839 | */ | |
840 | if (s->cb_dev->bus->number == 0) | |
841 | return -EINVAL; | |
842 | #endif | |
843 | ||
9fea84f4 | 844 | for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) { |
3c29976a DB |
845 | res = s->cb_dev->bus->resource[i]; |
846 | if (!res) | |
847 | continue; | |
848 | ||
849 | if (res->flags & IORESOURCE_IO) { | |
850 | if (res == &ioport_resource) | |
851 | continue; | |
dbe4ea5f DB |
852 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
853 | "pcmcia: parent PCI bridge I/O " | |
854 | "window: 0x%llx - 0x%llx\n", | |
855 | (unsigned long long)res->start, | |
856 | (unsigned long long)res->end); | |
3c29976a DB |
857 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
858 | done |= IORESOURCE_IO; | |
859 | ||
860 | } | |
861 | ||
862 | if (res->flags & IORESOURCE_MEM) { | |
863 | if (res == &iomem_resource) | |
864 | continue; | |
dbe4ea5f DB |
865 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
866 | "pcmcia: parent PCI bridge Memory " | |
867 | "window: 0x%llx - 0x%llx\n", | |
868 | (unsigned long long)res->start, | |
869 | (unsigned long long)res->end); | |
3c29976a DB |
870 | if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
871 | done |= IORESOURCE_MEM; | |
872 | } | |
873 | } | |
874 | ||
875 | /* if we got at least one of IO, and one of MEM, we can be glad and | |
876 | * activate the PCMCIA subsystem */ | |
54bb5675 | 877 | if (done == (IORESOURCE_MEM | IORESOURCE_IO)) |
3c29976a DB |
878 | s->resource_setup_done = 1; |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
883 | #else | |
884 | ||
885 | static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
886 | { | |
887 | return -ENODEV; | |
888 | } | |
889 | ||
890 | #endif | |
891 | ||
892 | ||
1da177e4 LT |
893 | static int nonstatic_init(struct pcmcia_socket *s) |
894 | { | |
895 | struct socket_data *data; | |
896 | ||
8084b372 | 897 | data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); |
1da177e4 LT |
898 | if (!data) |
899 | return -ENOMEM; | |
1da177e4 LT |
900 | |
901 | data->mem_db.next = &data->mem_db; | |
902 | data->io_db.next = &data->io_db; | |
903 | ||
904 | s->resource_data = (void *) data; | |
905 | ||
3c29976a DB |
906 | nonstatic_autoadd_resources(s); |
907 | ||
1da177e4 LT |
908 | return 0; |
909 | } | |
910 | ||
911 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
912 | { | |
913 | struct socket_data *data = s->resource_data; | |
914 | struct resource_map *p, *q; | |
915 | ||
1da177e4 LT |
916 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { |
917 | q = p->next; | |
918 | kfree(p); | |
919 | } | |
920 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
921 | q = p->next; | |
922 | kfree(p); | |
923 | } | |
1da177e4 LT |
924 | } |
925 | ||
926 | ||
927 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
928 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
929 | .adjust_io_region = nonstatic_adjust_io_region, | |
930 | .find_io = nonstatic_find_io_region, | |
931 | .find_mem = nonstatic_find_mem_region, | |
c5023801 DB |
932 | .add_io = adjust_io, |
933 | .add_mem = adjust_memory, | |
1da177e4 LT |
934 | .init = nonstatic_init, |
935 | .exit = nonstatic_release_resource_db, | |
936 | }; | |
937 | EXPORT_SYMBOL(pccard_nonstatic_ops); | |
938 | ||
939 | ||
940 | /* sysfs interface to the resource database */ | |
941 | ||
87373318 GKH |
942 | static ssize_t show_io_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 | ||
cfe5d809 | 950 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
951 | data = s->resource_data; |
952 | ||
953 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
954 | if (ret > (PAGE_SIZE - 10)) | |
955 | continue; | |
9fea84f4 DB |
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)); | |
1da177e4 LT |
960 | } |
961 | ||
cfe5d809 | 962 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 963 | return ret; |
1da177e4 LT |
964 | } |
965 | ||
87373318 GKH |
966 | static ssize_t store_io_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 | ||
9fea84f4 | 975 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 976 | if (ret != 2) { |
9fea84f4 | 977 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 978 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 979 | if (ret != 2) { |
9fea84f4 DB |
980 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
981 | &end_addr); | |
22916638 | 982 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
983 | if (ret != 2) |
984 | return -EINVAL; | |
985 | } | |
986 | } | |
1146bc74 | 987 | if (end_addr < start_addr) |
1da177e4 LT |
988 | return -EINVAL; |
989 | ||
cfe5d809 | 990 | mutex_lock(&s->ops_mutex); |
22916638 | 991 | ret = adjust_io(s, add, start_addr, end_addr); |
3c29976a DB |
992 | if (!ret) |
993 | s->resource_setup_new = 1; | |
cfe5d809 | 994 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
995 | |
996 | return ret ? ret : count; | |
997 | } | |
87373318 | 998 | static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); |
1da177e4 | 999 | |
87373318 GKH |
1000 | static ssize_t show_mem_db(struct device *dev, |
1001 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1002 | { |
87373318 | 1003 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1004 | struct socket_data *data; |
1005 | struct resource_map *p; | |
1006 | ssize_t ret = 0; | |
1007 | ||
cfe5d809 | 1008 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
1009 | data = s->resource_data; |
1010 | ||
1011 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { | |
1012 | if (ret > (PAGE_SIZE - 10)) | |
1013 | continue; | |
9fea84f4 DB |
1014 | ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
1015 | "0x%08lx - 0x%08lx\n", | |
1016 | ((unsigned long) p->base), | |
1017 | ((unsigned long) p->base + p->num - 1)); | |
1da177e4 LT |
1018 | } |
1019 | ||
cfe5d809 | 1020 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 1021 | return ret; |
1da177e4 LT |
1022 | } |
1023 | ||
87373318 GKH |
1024 | static ssize_t store_mem_db(struct device *dev, |
1025 | struct device_attribute *attr, | |
1026 | const char *buf, size_t count) | |
1da177e4 | 1027 | { |
87373318 | 1028 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 1029 | unsigned long start_addr, end_addr; |
22916638 | 1030 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1031 | ssize_t ret = 0; |
1032 | ||
9fea84f4 | 1033 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 1034 | if (ret != 2) { |
9fea84f4 | 1035 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 1036 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 1037 | if (ret != 2) { |
9fea84f4 DB |
1038 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
1039 | &end_addr); | |
22916638 | 1040 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1041 | if (ret != 2) |
1042 | return -EINVAL; | |
1043 | } | |
1044 | } | |
1146bc74 | 1045 | if (end_addr < start_addr) |
1da177e4 LT |
1046 | return -EINVAL; |
1047 | ||
cfe5d809 | 1048 | mutex_lock(&s->ops_mutex); |
22916638 | 1049 | ret = adjust_memory(s, add, start_addr, end_addr); |
3c29976a DB |
1050 | if (!ret) |
1051 | s->resource_setup_new = 1; | |
cfe5d809 | 1052 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
1053 | |
1054 | return ret ? ret : count; | |
1055 | } | |
87373318 | 1056 | static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); |
1da177e4 | 1057 | |
7d578961 DB |
1058 | static struct attribute *pccard_rsrc_attributes[] = { |
1059 | &dev_attr_available_resources_io.attr, | |
1060 | &dev_attr_available_resources_mem.attr, | |
1da177e4 LT |
1061 | NULL, |
1062 | }; | |
1063 | ||
7d578961 DB |
1064 | static const struct attribute_group rsrc_attributes = { |
1065 | .attrs = pccard_rsrc_attributes, | |
1066 | }; | |
1067 | ||
87373318 | 1068 | static int __devinit pccard_sysfs_add_rsrc(struct device *dev, |
d8539d81 | 1069 | struct class_interface *class_intf) |
1da177e4 | 1070 | { |
87373318 | 1071 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
7d578961 | 1072 | |
1da177e4 LT |
1073 | if (s->resource_ops != &pccard_nonstatic_ops) |
1074 | return 0; | |
7d578961 | 1075 | return sysfs_create_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1076 | } |
1077 | ||
87373318 | 1078 | static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, |
d8539d81 | 1079 | struct class_interface *class_intf) |
1da177e4 | 1080 | { |
87373318 | 1081 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1082 | |
1083 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1084 | return; | |
7d578961 | 1085 | sysfs_remove_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1086 | } |
1087 | ||
ed49f5d0 | 1088 | static struct class_interface pccard_rsrc_interface __refdata = { |
1da177e4 | 1089 | .class = &pcmcia_socket_class, |
87373318 GKH |
1090 | .add_dev = &pccard_sysfs_add_rsrc, |
1091 | .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), | |
1da177e4 LT |
1092 | }; |
1093 | ||
1094 | static int __init nonstatic_sysfs_init(void) | |
1095 | { | |
1096 | return class_interface_register(&pccard_rsrc_interface); | |
1097 | } | |
1098 | ||
1099 | static void __exit nonstatic_sysfs_exit(void) | |
1100 | { | |
1101 | class_interface_unregister(&pccard_rsrc_interface); | |
1102 | } | |
1103 | ||
1104 | module_init(nonstatic_sysfs_init); | |
1105 | module_exit(nonstatic_sysfs_exit); |