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 | 30 | |
1da177e4 | 31 | #include <pcmcia/ss.h> |
1da177e4 LT |
32 | #include <pcmcia/cistpl.h> |
33 | #include "cs_internal.h" | |
34 | ||
49b1153a | 35 | /* moved to rsrc_mgr.c |
1da177e4 LT |
36 | MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); |
37 | MODULE_LICENSE("GPL"); | |
49b1153a | 38 | */ |
1da177e4 LT |
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; | |
7b4884ca | 58 | struct resource_map mem_db_valid; |
1da177e4 | 59 | struct resource_map io_db; |
1da177e4 LT |
60 | }; |
61 | ||
1da177e4 LT |
62 | #define MEM_PROBE_LOW (1 << 0) |
63 | #define MEM_PROBE_HIGH (1 << 1) | |
64 | ||
3dace8cf DB |
65 | /* Action field */ |
66 | #define REMOVE_MANAGED_RESOURCE 1 | |
67 | #define ADD_MANAGED_RESOURCE 2 | |
1da177e4 LT |
68 | |
69 | /*====================================================================== | |
70 | ||
71 | Linux resource management extensions | |
72 | ||
73 | ======================================================================*/ | |
74 | ||
1da177e4 | 75 | static struct resource * |
2427ddd8 GKH |
76 | claim_region(struct pcmcia_socket *s, resource_size_t base, |
77 | resource_size_t size, int type, char *name) | |
1da177e4 LT |
78 | { |
79 | struct resource *res, *parent; | |
80 | ||
81 | parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; | |
49b1153a | 82 | res = pcmcia_make_resource(base, size, type | IORESOURCE_BUSY, name); |
1da177e4 LT |
83 | |
84 | if (res) { | |
85 | #ifdef CONFIG_PCI | |
86 | if (s && s->cb_dev) | |
87 | parent = pci_find_parent_resource(s->cb_dev, res); | |
88 | #endif | |
89 | if (!parent || request_resource(parent, res)) { | |
90 | kfree(res); | |
91 | res = NULL; | |
92 | } | |
93 | } | |
94 | return res; | |
95 | } | |
96 | ||
97 | static void free_region(struct resource *res) | |
98 | { | |
99 | if (res) { | |
100 | release_resource(res); | |
101 | kfree(res); | |
102 | } | |
103 | } | |
104 | ||
105 | /*====================================================================== | |
106 | ||
107 | These manage the internal databases of available resources. | |
108 | ||
109 | ======================================================================*/ | |
110 | ||
111 | static int add_interval(struct resource_map *map, u_long base, u_long num) | |
112 | { | |
1168386a | 113 | struct resource_map *p, *q; |
1da177e4 | 114 | |
1168386a | 115 | for (p = map; ; p = p->next) { |
f309cb3e DB |
116 | if ((p != map) && (p->base+p->num >= base)) { |
117 | p->num = max(num + base - p->base, p->num); | |
118 | return 0; | |
119 | } | |
1168386a DB |
120 | if ((p->next == map) || (p->next->base > base+num-1)) |
121 | break; | |
122 | } | |
123 | q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
124 | if (!q) { | |
125 | printk(KERN_WARNING "out of memory to update resources\n"); | |
126 | return -ENOMEM; | |
127 | } | |
128 | q->base = base; q->num = num; | |
129 | q->next = p->next; p->next = q; | |
130 | return 0; | |
1da177e4 LT |
131 | } |
132 | ||
133 | /*====================================================================*/ | |
134 | ||
135 | static int sub_interval(struct resource_map *map, u_long base, u_long num) | |
136 | { | |
9fea84f4 DB |
137 | struct resource_map *p, *q; |
138 | ||
139 | for (p = map; ; p = q) { | |
140 | q = p->next; | |
141 | if (q == map) | |
142 | break; | |
143 | if ((q->base+q->num > base) && (base+num > q->base)) { | |
144 | if (q->base >= base) { | |
145 | if (q->base+q->num <= base+num) { | |
146 | /* Delete whole block */ | |
147 | p->next = q->next; | |
148 | kfree(q); | |
149 | /* don't advance the pointer yet */ | |
150 | q = p; | |
151 | } else { | |
152 | /* Cut off bit from the front */ | |
153 | q->num = q->base + q->num - base - num; | |
154 | q->base = base + num; | |
155 | } | |
156 | } else if (q->base+q->num <= base+num) { | |
157 | /* Cut off bit from the end */ | |
158 | q->num = base - q->base; | |
159 | } else { | |
160 | /* Split the block into two pieces */ | |
161 | p = kmalloc(sizeof(struct resource_map), | |
162 | GFP_KERNEL); | |
163 | if (!p) { | |
164 | printk(KERN_WARNING "out of memory to update resources\n"); | |
165 | return -ENOMEM; | |
166 | } | |
167 | p->base = base+num; | |
168 | p->num = q->base+q->num - p->base; | |
169 | q->num = base - q->base; | |
170 | p->next = q->next ; q->next = p; | |
171 | } | |
1168386a | 172 | } |
9fea84f4 DB |
173 | } |
174 | return 0; | |
1da177e4 LT |
175 | } |
176 | ||
177 | /*====================================================================== | |
178 | ||
179 | These routines examine a region of IO or memory addresses to | |
180 | determine what ranges might be genuinely available. | |
181 | ||
182 | ======================================================================*/ | |
183 | ||
184 | #ifdef CONFIG_PCMCIA_PROBE | |
906da809 OJ |
185 | static void do_io_probe(struct pcmcia_socket *s, unsigned int base, |
186 | unsigned int num) | |
1da177e4 | 187 | { |
9fea84f4 DB |
188 | struct resource *res; |
189 | struct socket_data *s_data = s->resource_data; | |
190 | unsigned int i, j, bad; | |
191 | int any; | |
192 | u_char *b, hole, most; | |
193 | ||
194 | dev_printk(KERN_INFO, &s->dev, "cs: IO port probe %#x-%#x:", | |
195 | base, base+num-1); | |
196 | ||
197 | /* First, what does a floating port look like? */ | |
198 | b = kzalloc(256, GFP_KERNEL); | |
199 | if (!b) { | |
200 | printk("\n"); | |
201 | dev_printk(KERN_ERR, &s->dev, | |
202 | "do_io_probe: unable to kmalloc 256 bytes"); | |
203 | return; | |
204 | } | |
205 | for (i = base, most = 0; i < base+num; i += 8) { | |
509b0865 | 206 | res = claim_region(s, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); |
9fea84f4 DB |
207 | if (!res) |
208 | continue; | |
209 | hole = inb(i); | |
210 | for (j = 1; j < 8; j++) | |
211 | if (inb(i+j) != hole) | |
212 | break; | |
213 | free_region(res); | |
214 | if ((j == 8) && (++b[hole] > b[most])) | |
215 | most = hole; | |
216 | if (b[most] == 127) | |
217 | break; | |
218 | } | |
219 | kfree(b); | |
220 | ||
221 | bad = any = 0; | |
222 | for (i = base; i < base+num; i += 8) { | |
509b0865 DB |
223 | res = claim_region(s, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); |
224 | if (!res) { | |
225 | if (!any) | |
226 | printk(" excluding"); | |
227 | if (!bad) | |
228 | bad = any = i; | |
9fea84f4 | 229 | continue; |
509b0865 | 230 | } |
9fea84f4 DB |
231 | for (j = 0; j < 8; j++) |
232 | if (inb(i+j) != most) | |
233 | break; | |
234 | free_region(res); | |
235 | if (j < 8) { | |
236 | if (!any) | |
237 | printk(" excluding"); | |
238 | if (!bad) | |
239 | bad = any = i; | |
240 | } else { | |
241 | if (bad) { | |
242 | sub_interval(&s_data->io_db, bad, i-bad); | |
243 | printk(" %#x-%#x", bad, i-1); | |
244 | bad = 0; | |
245 | } | |
246 | } | |
247 | } | |
248 | if (bad) { | |
249 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
509b0865 | 250 | sub_interval(&s_data->io_db, bad, i-bad); |
9fea84f4 DB |
251 | printk(" nothing: probe failed.\n"); |
252 | return; | |
253 | } else { | |
254 | sub_interval(&s_data->io_db, bad, i-bad); | |
255 | printk(" %#x-%#x", bad, i-1); | |
256 | } | |
257 | } | |
258 | ||
259 | printk(any ? "\n" : " clean.\n"); | |
1da177e4 LT |
260 | } |
261 | #endif | |
262 | ||
3f32b3c0 | 263 | /*======================================================================*/ |
1da177e4 | 264 | |
3f32b3c0 DB |
265 | /** |
266 | * readable() - iomem validation function for cards with a valid CIS | |
267 | */ | |
c5081d5f DB |
268 | static int readable(struct pcmcia_socket *s, struct resource *res, |
269 | unsigned int *count) | |
1da177e4 | 270 | { |
3f32b3c0 | 271 | int ret = -EINVAL; |
1da177e4 | 272 | |
7ab24855 DB |
273 | if (s->fake_cis) { |
274 | dev_dbg(&s->dev, "fake CIS is being used: can't validate mem\n"); | |
275 | return 0; | |
276 | } | |
1da177e4 LT |
277 | |
278 | s->cis_mem.res = res; | |
279 | s->cis_virt = ioremap(res->start, s->map_size); | |
280 | if (s->cis_virt) { | |
6b8e087b | 281 | mutex_unlock(&s->ops_mutex); |
6e7b51a7 DB |
282 | /* as we're only called from pcmcia.c, we're safe */ |
283 | if (s->callback->validate) | |
284 | ret = s->callback->validate(s, count); | |
904e3777 | 285 | /* invalidate mapping */ |
6b8e087b | 286 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
287 | iounmap(s->cis_virt); |
288 | s->cis_virt = NULL; | |
1da177e4 LT |
289 | } |
290 | s->cis_mem.res = NULL; | |
3f32b3c0 DB |
291 | if ((ret) || (*count == 0)) |
292 | return -EINVAL; | |
293 | return 0; | |
1da177e4 LT |
294 | } |
295 | ||
3f32b3c0 DB |
296 | /** |
297 | * checksum() - iomem validation function for simple memory cards | |
298 | */ | |
299 | static int checksum(struct pcmcia_socket *s, struct resource *res, | |
300 | unsigned int *value) | |
1da177e4 LT |
301 | { |
302 | pccard_mem_map map; | |
303 | int i, a = 0, b = -1, d; | |
304 | void __iomem *virt; | |
305 | ||
306 | virt = ioremap(res->start, s->map_size); | |
307 | if (virt) { | |
308 | map.map = 0; | |
309 | map.flags = MAP_ACTIVE; | |
310 | map.speed = 0; | |
311 | map.res = res; | |
312 | map.card_start = 0; | |
313 | s->ops->set_mem_map(s, &map); | |
314 | ||
315 | /* Don't bother checking every word... */ | |
316 | for (i = 0; i < s->map_size; i += 44) { | |
317 | d = readl(virt+i); | |
318 | a += d; | |
319 | b &= d; | |
320 | } | |
321 | ||
322 | map.flags = 0; | |
323 | s->ops->set_mem_map(s, &map); | |
324 | ||
325 | iounmap(virt); | |
326 | } | |
327 | ||
3f32b3c0 DB |
328 | if (b == -1) |
329 | return -EINVAL; | |
1da177e4 | 330 | |
3f32b3c0 | 331 | *value = a; |
1da177e4 | 332 | |
3f32b3c0 | 333 | return 0; |
1da177e4 LT |
334 | } |
335 | ||
3f32b3c0 DB |
336 | /** |
337 | * do_validate_mem() - low level validate a memory region for PCMCIA use | |
338 | * @s: PCMCIA socket to validate | |
339 | * @base: start address of resource to check | |
340 | * @size: size of resource to check | |
341 | * @validate: validation function to use | |
342 | * | |
343 | * do_validate_mem() splits up the memory region which is to be checked | |
344 | * into two parts. Both are passed to the @validate() function. If | |
345 | * @validate() returns non-zero, or the value parameter to @validate() | |
346 | * is zero, or the value parameter is different between both calls, | |
347 | * the check fails, and -EINVAL is returned. Else, 0 is returned. | |
348 | */ | |
349 | static int do_validate_mem(struct pcmcia_socket *s, | |
350 | unsigned long base, unsigned long size, | |
351 | int validate (struct pcmcia_socket *s, | |
352 | struct resource *res, | |
353 | unsigned int *value)) | |
1da177e4 | 354 | { |
7b4884ca | 355 | struct socket_data *s_data = s->resource_data; |
1da177e4 | 356 | struct resource *res1, *res2; |
3f32b3c0 DB |
357 | unsigned int info1 = 1, info2 = 1; |
358 | int ret = -EINVAL; | |
1da177e4 | 359 | |
9fea84f4 DB |
360 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); |
361 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, | |
362 | "PCMCIA memprobe"); | |
1da177e4 LT |
363 | |
364 | if (res1 && res2) { | |
3f32b3c0 DB |
365 | ret = 0; |
366 | if (validate) { | |
367 | ret = validate(s, res1, &info1); | |
368 | ret += validate(s, res2, &info2); | |
369 | } | |
1da177e4 LT |
370 | } |
371 | ||
372 | free_region(res2); | |
373 | free_region(res1); | |
374 | ||
3f32b3c0 DB |
375 | dev_dbg(&s->dev, "cs: memory probe 0x%06lx-0x%06lx: %p %p %u %u %u", |
376 | base, base+size-1, res1, res2, ret, info1, info2); | |
1da177e4 | 377 | |
3f32b3c0 DB |
378 | if ((ret) || (info1 != info2) || (info1 == 0)) |
379 | return -EINVAL; | |
1da177e4 | 380 | |
7b4884ca DB |
381 | if (validate && !s->fake_cis) { |
382 | /* move it to the validated data set */ | |
383 | add_interval(&s_data->mem_db_valid, base, size); | |
384 | sub_interval(&s_data->mem_db, base, size); | |
1da177e4 LT |
385 | } |
386 | ||
3f32b3c0 | 387 | return 0; |
1da177e4 LT |
388 | } |
389 | ||
1da177e4 | 390 | |
3f32b3c0 DB |
391 | /** |
392 | * do_mem_probe() - validate a memory region for PCMCIA use | |
393 | * @s: PCMCIA socket to validate | |
394 | * @base: start address of resource to check | |
395 | * @num: size of resource to check | |
396 | * @validate: validation function to use | |
397 | * @fallback: validation function to use if validate fails | |
398 | * | |
399 | * do_mem_probe() checks a memory region for use by the PCMCIA subsystem. | |
400 | * To do so, the area is split up into sensible parts, and then passed | |
401 | * into the @validate() function. Only if @validate() and @fallback() fail, | |
402 | * the area is marked as unavaibale for use by the PCMCIA subsystem. The | |
403 | * function returns the size of the usable memory area. | |
404 | */ | |
405 | static int do_mem_probe(struct pcmcia_socket *s, u_long base, u_long num, | |
406 | int validate (struct pcmcia_socket *s, | |
407 | struct resource *res, | |
408 | unsigned int *value), | |
409 | int fallback (struct pcmcia_socket *s, | |
410 | struct resource *res, | |
411 | unsigned int *value)) | |
1da177e4 | 412 | { |
9fea84f4 DB |
413 | struct socket_data *s_data = s->resource_data; |
414 | u_long i, j, bad, fail, step; | |
415 | ||
416 | dev_printk(KERN_INFO, &s->dev, "cs: memory probe 0x%06lx-0x%06lx:", | |
417 | base, base+num-1); | |
418 | bad = fail = 0; | |
419 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
420 | /* don't allow too large steps */ | |
421 | if (step > 0x800000) | |
422 | step = 0x800000; | |
423 | /* cis_readable wants to map 2x map_size */ | |
424 | if (step < 2 * s->map_size) | |
425 | step = 2 * s->map_size; | |
426 | for (i = j = base; i < base+num; i = j + step) { | |
427 | if (!fail) { | |
428 | for (j = i; j < base+num; j += step) { | |
3f32b3c0 | 429 | if (!do_validate_mem(s, j, step, validate)) |
9fea84f4 DB |
430 | break; |
431 | } | |
432 | fail = ((i == base) && (j == base+num)); | |
433 | } | |
3f32b3c0 DB |
434 | if ((fail) && (fallback)) { |
435 | for (j = i; j < base+num; j += step) | |
436 | if (!do_validate_mem(s, j, step, fallback)) | |
9fea84f4 DB |
437 | break; |
438 | } | |
439 | if (i != j) { | |
440 | if (!bad) | |
441 | printk(" excluding"); | |
442 | printk(" %#05lx-%#05lx", i, j-1); | |
443 | sub_interval(&s_data->mem_db, i, j-i); | |
444 | bad += j-i; | |
445 | } | |
446 | } | |
447 | printk(bad ? "\n" : " clean.\n"); | |
448 | return num - bad; | |
1da177e4 LT |
449 | } |
450 | ||
3f32b3c0 | 451 | |
1da177e4 LT |
452 | #ifdef CONFIG_PCMCIA_PROBE |
453 | ||
3f32b3c0 DB |
454 | /** |
455 | * inv_probe() - top-to-bottom search for one usuable high memory area | |
456 | * @s: PCMCIA socket to validate | |
457 | * @m: resource_map to check | |
458 | */ | |
1da177e4 LT |
459 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) |
460 | { | |
de75914e DB |
461 | struct socket_data *s_data = s->resource_data; |
462 | u_long ok; | |
463 | if (m == &s_data->mem_db) | |
464 | return 0; | |
465 | ok = inv_probe(m->next, s); | |
466 | if (ok) { | |
467 | if (m->base >= 0x100000) | |
468 | sub_interval(&s_data->mem_db, m->base, m->num); | |
469 | return ok; | |
470 | } | |
471 | if (m->base < 0x100000) | |
472 | return 0; | |
3f32b3c0 | 473 | return do_mem_probe(s, m->base, m->num, readable, checksum); |
1da177e4 LT |
474 | } |
475 | ||
3f32b3c0 DB |
476 | /** |
477 | * validate_mem() - memory probe function | |
478 | * @s: PCMCIA socket to validate | |
479 | * @probe_mask: MEM_PROBE_LOW | MEM_PROBE_HIGH | |
480 | * | |
481 | * The memory probe. If the memory list includes a 64K-aligned block | |
482 | * below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
483 | * least mem_limit free space, we quit. Returns 0 on usuable ports. | |
484 | */ | |
de75914e | 485 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 486 | { |
de75914e DB |
487 | struct resource_map *m, mm; |
488 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
489 | unsigned long b, i, ok = 0; | |
490 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 491 | |
de75914e DB |
492 | /* We do up to four passes through the list */ |
493 | if (probe_mask & MEM_PROBE_HIGH) { | |
494 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
495 | return 0; | |
7b4884ca DB |
496 | if (s_data->mem_db_valid.next != &s_data->mem_db_valid) |
497 | return 0; | |
dbe4ea5f DB |
498 | dev_printk(KERN_NOTICE, &s->dev, |
499 | "cs: warning: no high memory space available!\n"); | |
de75914e | 500 | return -ENODEV; |
1da177e4 | 501 | } |
de75914e DB |
502 | |
503 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
504 | mm = *m; | |
505 | /* Only probe < 1 MB */ | |
506 | if (mm.base >= 0x100000) | |
507 | continue; | |
508 | if ((mm.base | mm.num) & 0xffff) { | |
3f32b3c0 DB |
509 | ok += do_mem_probe(s, mm.base, mm.num, readable, |
510 | checksum); | |
de75914e DB |
511 | continue; |
512 | } | |
513 | /* Special probe for 64K-aligned block */ | |
514 | for (i = 0; i < 4; i++) { | |
515 | b = order[i] << 12; | |
516 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
517 | if (ok >= mem_limit) | |
518 | sub_interval(&s_data->mem_db, b, 0x10000); | |
519 | else | |
3f32b3c0 DB |
520 | ok += do_mem_probe(s, b, 0x10000, |
521 | readable, checksum); | |
de75914e DB |
522 | } |
523 | } | |
1da177e4 | 524 | } |
de75914e DB |
525 | |
526 | if (ok > 0) | |
527 | return 0; | |
528 | ||
529 | return -ENODEV; | |
1da177e4 LT |
530 | } |
531 | ||
532 | #else /* CONFIG_PCMCIA_PROBE */ | |
533 | ||
3f32b3c0 DB |
534 | /** |
535 | * validate_mem() - memory probe function | |
536 | * @s: PCMCIA socket to validate | |
537 | * @probe_mask: ignored | |
538 | * | |
539 | * Returns 0 on usuable ports. | |
540 | */ | |
2cff9447 | 541 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 LT |
542 | { |
543 | struct resource_map *m, mm; | |
544 | struct socket_data *s_data = s->resource_data; | |
2cff9447 | 545 | unsigned long ok = 0; |
1da177e4 LT |
546 | |
547 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
548 | mm = *m; | |
3f32b3c0 | 549 | ok += do_mem_probe(s, mm.base, mm.num, readable, checksum); |
1da177e4 | 550 | } |
2cff9447 AM |
551 | if (ok > 0) |
552 | return 0; | |
553 | return -ENODEV; | |
1da177e4 LT |
554 | } |
555 | ||
556 | #endif /* CONFIG_PCMCIA_PROBE */ | |
557 | ||
558 | ||
3f32b3c0 DB |
559 | /** |
560 | * pcmcia_nonstatic_validate_mem() - try to validate iomem for PCMCIA use | |
561 | * @s: PCMCIA socket to validate | |
562 | * | |
563 | * This is tricky... when we set up CIS memory, we try to validate | |
564 | * the memory window space allocations. | |
565 | * | |
7fe908dd | 566 | * Locking note: Must be called with skt_mutex held! |
1da177e4 | 567 | */ |
de75914e | 568 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
569 | { |
570 | struct socket_data *s_data = s->resource_data; | |
de75914e | 571 | unsigned int probe_mask = MEM_PROBE_LOW; |
7b4884ca | 572 | int ret; |
de75914e | 573 | |
7b4884ca | 574 | if (!probe_mem || !(s->state & SOCKET_PRESENT)) |
de75914e | 575 | return 0; |
1da177e4 | 576 | |
de75914e DB |
577 | if (s->features & SS_CAP_PAGE_REGS) |
578 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 579 | |
7b4884ca | 580 | ret = validate_mem(s, probe_mask); |
1da177e4 | 581 | |
7b4884ca DB |
582 | if (s_data->mem_db_valid.next != &s_data->mem_db_valid) |
583 | return 0; | |
1da177e4 | 584 | |
de75914e | 585 | return ret; |
1da177e4 LT |
586 | } |
587 | ||
588 | struct pcmcia_align_data { | |
589 | unsigned long mask; | |
590 | unsigned long offset; | |
591 | struct resource_map *map; | |
592 | }; | |
593 | ||
147a2746 DB |
594 | static resource_size_t pcmcia_common_align(struct pcmcia_align_data *align_data, |
595 | resource_size_t start) | |
1da177e4 | 596 | { |
147a2746 | 597 | resource_size_t ret; |
1da177e4 LT |
598 | /* |
599 | * Ensure that we have the correct start address | |
600 | */ | |
147a2746 DB |
601 | ret = (start & ~align_data->mask) + align_data->offset; |
602 | if (ret < start) | |
603 | ret += align_data->mask + 1; | |
604 | return ret; | |
1da177e4 LT |
605 | } |
606 | ||
b26b2d49 | 607 | static resource_size_t |
3b7a17fc DB |
608 | pcmcia_align(void *align_data, const struct resource *res, |
609 | resource_size_t size, resource_size_t align) | |
1da177e4 LT |
610 | { |
611 | struct pcmcia_align_data *data = align_data; | |
612 | struct resource_map *m; | |
b26b2d49 | 613 | resource_size_t start; |
1da177e4 | 614 | |
147a2746 | 615 | start = pcmcia_common_align(data, res->start); |
1da177e4 LT |
616 | |
617 | for (m = data->map->next; m != data->map; m = m->next) { | |
147a2746 DB |
618 | unsigned long map_start = m->base; |
619 | unsigned long map_end = m->base + m->num - 1; | |
1da177e4 LT |
620 | |
621 | /* | |
622 | * If the lower resources are not available, try aligning | |
623 | * to this entry of the resource database to see if it'll | |
624 | * fit here. | |
625 | */ | |
147a2746 DB |
626 | if (start < map_start) |
627 | start = pcmcia_common_align(data, map_start); | |
1da177e4 LT |
628 | |
629 | /* | |
630 | * If we're above the area which was passed in, there's | |
631 | * no point proceeding. | |
632 | */ | |
147a2746 | 633 | if (start >= res->end) |
1da177e4 LT |
634 | break; |
635 | ||
147a2746 | 636 | if ((start + size - 1) <= map_end) |
1da177e4 LT |
637 | break; |
638 | } | |
639 | ||
640 | /* | |
641 | * If we failed to find something suitable, ensure we fail. | |
642 | */ | |
643 | if (m == data->map) | |
b26b2d49 DB |
644 | start = res->end; |
645 | ||
646 | return start; | |
1da177e4 LT |
647 | } |
648 | ||
649 | /* | |
650 | * Adjust an existing IO region allocation, but making sure that we don't | |
651 | * encroach outside the resources which the user supplied. | |
652 | */ | |
b19a7275 DB |
653 | static int __nonstatic_adjust_io_region(struct pcmcia_socket *s, |
654 | unsigned long r_start, | |
655 | unsigned long r_end) | |
1da177e4 LT |
656 | { |
657 | struct resource_map *m; | |
658 | struct socket_data *s_data = s->resource_data; | |
659 | int ret = -ENOMEM; | |
660 | ||
1da177e4 LT |
661 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { |
662 | unsigned long start = m->base; | |
663 | unsigned long end = m->base + m->num - 1; | |
664 | ||
665 | if (start > r_start || r_end > end) | |
666 | continue; | |
667 | ||
b19a7275 | 668 | ret = 0; |
1da177e4 | 669 | } |
1da177e4 LT |
670 | |
671 | return ret; | |
672 | } | |
673 | ||
674 | /*====================================================================== | |
675 | ||
676 | These find ranges of I/O ports or memory addresses that are not | |
677 | currently allocated by other devices. | |
678 | ||
679 | The 'align' field should reflect the number of bits of address | |
680 | that need to be preserved from the initial value of *base. It | |
681 | should be a power of two, greater than or equal to 'num'. A value | |
682 | of 0 means that all bits of *base are significant. *base should | |
683 | also be strictly less than 'align'. | |
684 | ||
685 | ======================================================================*/ | |
686 | ||
b19a7275 DB |
687 | static struct resource *__nonstatic_find_io_region(struct pcmcia_socket *s, |
688 | unsigned long base, int num, | |
689 | unsigned long align) | |
1da177e4 | 690 | { |
49b1153a DB |
691 | struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_IO, |
692 | dev_name(&s->dev)); | |
1da177e4 LT |
693 | struct socket_data *s_data = s->resource_data; |
694 | struct pcmcia_align_data data; | |
695 | unsigned long min = base; | |
696 | int ret; | |
697 | ||
1da177e4 LT |
698 | data.mask = align - 1; |
699 | data.offset = base & data.mask; | |
700 | data.map = &s_data->io_db; | |
701 | ||
1da177e4 LT |
702 | #ifdef CONFIG_PCI |
703 | if (s->cb_dev) { | |
704 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
705 | min, 0, pcmcia_align, &data); | |
706 | } else | |
707 | #endif | |
708 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
709 | 1, pcmcia_align, &data); | |
1da177e4 LT |
710 | |
711 | if (ret != 0) { | |
712 | kfree(res); | |
713 | res = NULL; | |
714 | } | |
715 | return res; | |
716 | } | |
717 | ||
b19a7275 DB |
718 | static int nonstatic_find_io(struct pcmcia_socket *s, unsigned int attr, |
719 | unsigned int *base, unsigned int num, | |
ad0c7be2 | 720 | unsigned int align, struct resource **parent) |
b19a7275 DB |
721 | { |
722 | int i, ret = 0; | |
723 | ||
724 | /* Check for an already-allocated window that must conflict with | |
725 | * what was asked for. It is a hack because it does not catch all | |
726 | * potential conflicts, just the most obvious ones. | |
727 | */ | |
728 | for (i = 0; i < MAX_IO_WIN; i++) { | |
729 | if (!s->io[i].res) | |
730 | continue; | |
731 | ||
732 | if (!*base) | |
733 | continue; | |
734 | ||
735 | if ((s->io[i].res->start & (align-1)) == *base) | |
736 | return -EBUSY; | |
737 | } | |
738 | ||
739 | for (i = 0; i < MAX_IO_WIN; i++) { | |
740 | struct resource *res = s->io[i].res; | |
741 | unsigned int try; | |
742 | ||
743 | if (res && (res->flags & IORESOURCE_BITS) != | |
744 | (attr & IORESOURCE_BITS)) | |
745 | continue; | |
746 | ||
747 | if (!res) { | |
748 | if (align == 0) | |
749 | align = 0x10000; | |
750 | ||
751 | res = s->io[i].res = __nonstatic_find_io_region(s, | |
752 | *base, num, | |
753 | align); | |
754 | if (!res) | |
755 | return -EINVAL; | |
756 | ||
757 | *base = res->start; | |
758 | s->io[i].res->flags = | |
759 | ((res->flags & ~IORESOURCE_BITS) | | |
760 | (attr & IORESOURCE_BITS)); | |
761 | s->io[i].InUse = num; | |
ad0c7be2 | 762 | *parent = res; |
b19a7275 DB |
763 | return 0; |
764 | } | |
765 | ||
766 | /* Try to extend top of window */ | |
767 | try = res->end + 1; | |
768 | if ((*base == 0) || (*base == try)) { | |
769 | ret = __nonstatic_adjust_io_region(s, res->start, | |
770 | res->end + num); | |
771 | if (!ret) { | |
772 | ret = adjust_resource(s->io[i].res, res->start, | |
773 | res->end - res->start + num + 1); | |
774 | if (ret) | |
775 | continue; | |
776 | *base = try; | |
777 | s->io[i].InUse += num; | |
ad0c7be2 | 778 | *parent = res; |
b19a7275 DB |
779 | return 0; |
780 | } | |
781 | } | |
782 | ||
783 | /* Try to extend bottom of window */ | |
784 | try = res->start - num; | |
785 | if ((*base == 0) || (*base == try)) { | |
786 | ret = __nonstatic_adjust_io_region(s, | |
787 | res->start - num, | |
788 | res->end); | |
789 | if (!ret) { | |
790 | ret = adjust_resource(s->io[i].res, | |
791 | res->start - num, | |
792 | res->end - res->start + num + 1); | |
793 | if (ret) | |
794 | continue; | |
795 | *base = try; | |
796 | s->io[i].InUse += num; | |
ad0c7be2 | 797 | *parent = res; |
b19a7275 DB |
798 | return 0; |
799 | } | |
800 | } | |
801 | } | |
802 | ||
803 | return -EINVAL; | |
804 | } | |
805 | ||
806 | ||
9fea84f4 | 807 | static struct resource *nonstatic_find_mem_region(u_long base, u_long num, |
e94e15f7 | 808 | u_long align, int low, struct pcmcia_socket *s) |
1da177e4 | 809 | { |
49b1153a DB |
810 | struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_MEM, |
811 | dev_name(&s->dev)); | |
1da177e4 LT |
812 | struct socket_data *s_data = s->resource_data; |
813 | struct pcmcia_align_data data; | |
814 | unsigned long min, max; | |
7b4884ca | 815 | int ret, i, j; |
1da177e4 LT |
816 | |
817 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
818 | ||
819 | data.mask = align - 1; | |
820 | data.offset = base & data.mask; | |
1da177e4 LT |
821 | |
822 | for (i = 0; i < 2; i++) { | |
7b4884ca | 823 | data.map = &s_data->mem_db_valid; |
1da177e4 LT |
824 | if (low) { |
825 | max = 0x100000UL; | |
826 | min = base < max ? base : 0; | |
827 | } else { | |
828 | max = ~0UL; | |
829 | min = 0x100000UL + base; | |
830 | } | |
831 | ||
7b4884ca | 832 | for (j = 0; j < 2; j++) { |
1da177e4 | 833 | #ifdef CONFIG_PCI |
7b4884ca DB |
834 | if (s->cb_dev) { |
835 | ret = pci_bus_alloc_resource(s->cb_dev->bus, | |
836 | res, num, 1, min, 0, | |
837 | pcmcia_align, &data); | |
838 | } else | |
1da177e4 | 839 | #endif |
7b4884ca DB |
840 | { |
841 | ret = allocate_resource(&iomem_resource, | |
842 | res, num, min, max, 1, | |
843 | pcmcia_align, &data); | |
844 | } | |
845 | if (ret == 0) | |
846 | break; | |
847 | data.map = &s_data->mem_db; | |
848 | } | |
1da177e4 LT |
849 | if (ret == 0 || low) |
850 | break; | |
851 | low = 1; | |
852 | } | |
853 | ||
854 | if (ret != 0) { | |
855 | kfree(res); | |
856 | res = NULL; | |
857 | } | |
858 | return res; | |
859 | } | |
860 | ||
861 | ||
22916638 | 862 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 863 | { |
1da177e4 | 864 | struct socket_data *data = s->resource_data; |
22916638 DB |
865 | unsigned long size = end - start + 1; |
866 | int ret = 0; | |
1da177e4 | 867 | |
1146bc74 | 868 | if (end < start) |
22916638 | 869 | return -EINVAL; |
1da177e4 | 870 | |
22916638 | 871 | switch (action) { |
1da177e4 | 872 | case ADD_MANAGED_RESOURCE: |
22916638 | 873 | ret = add_interval(&data->mem_db, start, size); |
3f32b3c0 DB |
874 | if (!ret) |
875 | do_mem_probe(s, start, size, NULL, NULL); | |
1da177e4 LT |
876 | break; |
877 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 878 | ret = sub_interval(&data->mem_db, start, size); |
1da177e4 LT |
879 | break; |
880 | default: | |
22916638 | 881 | ret = -EINVAL; |
1da177e4 | 882 | } |
1da177e4 LT |
883 | |
884 | return ret; | |
885 | } | |
886 | ||
887 | ||
22916638 | 888 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
889 | { |
890 | struct socket_data *data = s->resource_data; | |
41b97ab5 | 891 | unsigned long size; |
22916638 | 892 | int ret = 0; |
1da177e4 | 893 | |
9713ab28 DB |
894 | #if defined(CONFIG_X86) |
895 | /* on x86, avoid anything < 0x100 for it is often used for | |
896 | * legacy platform devices */ | |
897 | if (start < 0x100) | |
898 | start = 0x100; | |
899 | #endif | |
900 | ||
41b97ab5 DB |
901 | size = end - start + 1; |
902 | ||
1146bc74 | 903 | if (end < start) |
22916638 DB |
904 | return -EINVAL; |
905 | ||
906 | if (end > IO_SPACE_LIMIT) | |
907 | return -EINVAL; | |
1da177e4 | 908 | |
22916638 | 909 | switch (action) { |
1da177e4 | 910 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
911 | if (add_interval(&data->io_db, start, size) != 0) { |
912 | ret = -EBUSY; | |
1da177e4 LT |
913 | break; |
914 | } | |
915 | #ifdef CONFIG_PCMCIA_PROBE | |
916 | if (probe_io) | |
22916638 | 917 | do_io_probe(s, start, size); |
1da177e4 LT |
918 | #endif |
919 | break; | |
920 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 921 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
922 | break; |
923 | default: | |
22916638 | 924 | ret = -EINVAL; |
1da177e4 LT |
925 | break; |
926 | } | |
1da177e4 LT |
927 | |
928 | return ret; | |
929 | } | |
930 | ||
931 | ||
3c29976a DB |
932 | #ifdef CONFIG_PCI |
933 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
934 | { | |
935 | struct resource *res; | |
936 | int i, done = 0; | |
937 | ||
938 | if (!s->cb_dev || !s->cb_dev->bus) | |
939 | return -ENODEV; | |
940 | ||
0d078f6f | 941 | #if defined(CONFIG_X86) |
cf26e8dc DB |
942 | /* If this is the root bus, the risk of hitting some strange |
943 | * system devices is too high: If a driver isn't loaded, the | |
944 | * resources are not claimed; even if a driver is loaded, it | |
945 | * may not request all resources or even the wrong one. We | |
946 | * can neither trust the rest of the kernel nor ACPI/PNP and | |
947 | * CRS parsing to get it right. Therefore, use several | |
948 | * safeguards: | |
949 | * | |
950 | * - Do not auto-add resources if the CardBus bridge is on | |
951 | * the PCI root bus | |
952 | * | |
953 | * - Avoid any I/O ports < 0x100. | |
954 | * | |
955 | * - On PCI-PCI bridges, only use resources which are set up | |
956 | * exclusively for the secondary PCI bus: the risk of hitting | |
957 | * system devices is quite low, as they usually aren't | |
958 | * connected to the secondary PCI bus. | |
b6d00f0d DB |
959 | */ |
960 | if (s->cb_dev->bus->number == 0) | |
961 | return -EINVAL; | |
b6d00f0d | 962 | |
cf26e8dc DB |
963 | for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) { |
964 | res = s->cb_dev->bus->resource[i]; | |
965 | #else | |
89a74ecc | 966 | pci_bus_for_each_resource(s->cb_dev->bus, res, i) { |
cf26e8dc | 967 | #endif |
3c29976a DB |
968 | if (!res) |
969 | continue; | |
970 | ||
971 | if (res->flags & IORESOURCE_IO) { | |
cf26e8dc DB |
972 | /* safeguard against the root resource, where the |
973 | * risk of hitting any other device would be too | |
974 | * high */ | |
3c29976a DB |
975 | if (res == &ioport_resource) |
976 | continue; | |
cf26e8dc | 977 | |
dbe4ea5f | 978 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
e1944c6b BH |
979 | "pcmcia: parent PCI bridge window: %pR\n", |
980 | res); | |
3c29976a DB |
981 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
982 | done |= IORESOURCE_IO; | |
983 | ||
984 | } | |
985 | ||
986 | if (res->flags & IORESOURCE_MEM) { | |
cf26e8dc DB |
987 | /* safeguard against the root resource, where the |
988 | * risk of hitting any other device would be too | |
989 | * high */ | |
3c29976a DB |
990 | if (res == &iomem_resource) |
991 | continue; | |
cf26e8dc | 992 | |
dbe4ea5f | 993 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
e1944c6b BH |
994 | "pcmcia: parent PCI bridge window: %pR\n", |
995 | res); | |
3c29976a DB |
996 | if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
997 | done |= IORESOURCE_MEM; | |
998 | } | |
999 | } | |
1000 | ||
1001 | /* if we got at least one of IO, and one of MEM, we can be glad and | |
1002 | * activate the PCMCIA subsystem */ | |
54bb5675 | 1003 | if (done == (IORESOURCE_MEM | IORESOURCE_IO)) |
3c29976a DB |
1004 | s->resource_setup_done = 1; |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | #else | |
1010 | ||
1011 | static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
1012 | { | |
1013 | return -ENODEV; | |
1014 | } | |
1015 | ||
1016 | #endif | |
1017 | ||
1018 | ||
1da177e4 LT |
1019 | static int nonstatic_init(struct pcmcia_socket *s) |
1020 | { | |
1021 | struct socket_data *data; | |
1022 | ||
8084b372 | 1023 | data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); |
1da177e4 LT |
1024 | if (!data) |
1025 | return -ENOMEM; | |
1da177e4 LT |
1026 | |
1027 | data->mem_db.next = &data->mem_db; | |
7b4884ca | 1028 | data->mem_db_valid.next = &data->mem_db_valid; |
1da177e4 LT |
1029 | data->io_db.next = &data->io_db; |
1030 | ||
1031 | s->resource_data = (void *) data; | |
1032 | ||
3c29976a DB |
1033 | nonstatic_autoadd_resources(s); |
1034 | ||
1da177e4 LT |
1035 | return 0; |
1036 | } | |
1037 | ||
1038 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
1039 | { | |
1040 | struct socket_data *data = s->resource_data; | |
1041 | struct resource_map *p, *q; | |
1042 | ||
7b4884ca DB |
1043 | for (p = data->mem_db_valid.next; p != &data->mem_db_valid; p = q) { |
1044 | q = p->next; | |
1045 | kfree(p); | |
1046 | } | |
1da177e4 LT |
1047 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { |
1048 | q = p->next; | |
1049 | kfree(p); | |
1050 | } | |
1051 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
1052 | q = p->next; | |
1053 | kfree(p); | |
1054 | } | |
1da177e4 LT |
1055 | } |
1056 | ||
1057 | ||
1058 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
1059 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
b19a7275 | 1060 | .find_io = nonstatic_find_io, |
1da177e4 | 1061 | .find_mem = nonstatic_find_mem_region, |
1da177e4 LT |
1062 | .init = nonstatic_init, |
1063 | .exit = nonstatic_release_resource_db, | |
1064 | }; | |
1065 | EXPORT_SYMBOL(pccard_nonstatic_ops); | |
1066 | ||
1067 | ||
1068 | /* sysfs interface to the resource database */ | |
1069 | ||
87373318 GKH |
1070 | static ssize_t show_io_db(struct device *dev, |
1071 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1072 | { |
87373318 | 1073 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1074 | struct socket_data *data; |
1075 | struct resource_map *p; | |
1076 | ssize_t ret = 0; | |
1077 | ||
cfe5d809 | 1078 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
1079 | data = s->resource_data; |
1080 | ||
1081 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
1082 | if (ret > (PAGE_SIZE - 10)) | |
1083 | continue; | |
9fea84f4 DB |
1084 | ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
1085 | "0x%08lx - 0x%08lx\n", | |
1086 | ((unsigned long) p->base), | |
1087 | ((unsigned long) p->base + p->num - 1)); | |
1da177e4 LT |
1088 | } |
1089 | ||
cfe5d809 | 1090 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 1091 | return ret; |
1da177e4 LT |
1092 | } |
1093 | ||
87373318 GKH |
1094 | static ssize_t store_io_db(struct device *dev, |
1095 | struct device_attribute *attr, | |
1096 | const char *buf, size_t count) | |
1da177e4 | 1097 | { |
87373318 | 1098 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 1099 | unsigned long start_addr, end_addr; |
22916638 | 1100 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1101 | ssize_t ret = 0; |
1102 | ||
9fea84f4 | 1103 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 1104 | if (ret != 2) { |
9fea84f4 | 1105 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 1106 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 1107 | if (ret != 2) { |
9fea84f4 DB |
1108 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
1109 | &end_addr); | |
22916638 | 1110 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1111 | if (ret != 2) |
1112 | return -EINVAL; | |
1113 | } | |
1114 | } | |
1146bc74 | 1115 | if (end_addr < start_addr) |
1da177e4 LT |
1116 | return -EINVAL; |
1117 | ||
cfe5d809 | 1118 | mutex_lock(&s->ops_mutex); |
22916638 | 1119 | ret = adjust_io(s, add, start_addr, end_addr); |
cfe5d809 | 1120 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
1121 | |
1122 | return ret ? ret : count; | |
1123 | } | |
87373318 | 1124 | static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); |
1da177e4 | 1125 | |
87373318 GKH |
1126 | static ssize_t show_mem_db(struct device *dev, |
1127 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1128 | { |
87373318 | 1129 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1130 | struct socket_data *data; |
1131 | struct resource_map *p; | |
1132 | ssize_t ret = 0; | |
1133 | ||
cfe5d809 | 1134 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
1135 | data = s->resource_data; |
1136 | ||
7b4884ca DB |
1137 | for (p = data->mem_db_valid.next; p != &data->mem_db_valid; |
1138 | p = p->next) { | |
1139 | if (ret > (PAGE_SIZE - 10)) | |
1140 | continue; | |
1141 | ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), | |
1142 | "0x%08lx - 0x%08lx\n", | |
1143 | ((unsigned long) p->base), | |
1144 | ((unsigned long) p->base + p->num - 1)); | |
1145 | } | |
1146 | ||
1da177e4 LT |
1147 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { |
1148 | if (ret > (PAGE_SIZE - 10)) | |
1149 | continue; | |
9fea84f4 DB |
1150 | ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
1151 | "0x%08lx - 0x%08lx\n", | |
1152 | ((unsigned long) p->base), | |
1153 | ((unsigned long) p->base + p->num - 1)); | |
1da177e4 LT |
1154 | } |
1155 | ||
cfe5d809 | 1156 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 1157 | return ret; |
1da177e4 LT |
1158 | } |
1159 | ||
87373318 GKH |
1160 | static ssize_t store_mem_db(struct device *dev, |
1161 | struct device_attribute *attr, | |
1162 | const char *buf, size_t count) | |
1da177e4 | 1163 | { |
87373318 | 1164 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 1165 | unsigned long start_addr, end_addr; |
22916638 | 1166 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1167 | ssize_t ret = 0; |
1168 | ||
9fea84f4 | 1169 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 1170 | if (ret != 2) { |
9fea84f4 | 1171 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 1172 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 1173 | if (ret != 2) { |
9fea84f4 DB |
1174 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
1175 | &end_addr); | |
22916638 | 1176 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1177 | if (ret != 2) |
1178 | return -EINVAL; | |
1179 | } | |
1180 | } | |
1146bc74 | 1181 | if (end_addr < start_addr) |
1da177e4 LT |
1182 | return -EINVAL; |
1183 | ||
cfe5d809 | 1184 | mutex_lock(&s->ops_mutex); |
22916638 | 1185 | ret = adjust_memory(s, add, start_addr, end_addr); |
cfe5d809 | 1186 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
1187 | |
1188 | return ret ? ret : count; | |
1189 | } | |
87373318 | 1190 | static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); |
1da177e4 | 1191 | |
7d578961 DB |
1192 | static struct attribute *pccard_rsrc_attributes[] = { |
1193 | &dev_attr_available_resources_io.attr, | |
1194 | &dev_attr_available_resources_mem.attr, | |
1da177e4 LT |
1195 | NULL, |
1196 | }; | |
1197 | ||
7d578961 DB |
1198 | static const struct attribute_group rsrc_attributes = { |
1199 | .attrs = pccard_rsrc_attributes, | |
1200 | }; | |
1201 | ||
87373318 | 1202 | static int __devinit pccard_sysfs_add_rsrc(struct device *dev, |
d8539d81 | 1203 | struct class_interface *class_intf) |
1da177e4 | 1204 | { |
87373318 | 1205 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
7d578961 | 1206 | |
1da177e4 LT |
1207 | if (s->resource_ops != &pccard_nonstatic_ops) |
1208 | return 0; | |
7d578961 | 1209 | return sysfs_create_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1210 | } |
1211 | ||
87373318 | 1212 | static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, |
d8539d81 | 1213 | struct class_interface *class_intf) |
1da177e4 | 1214 | { |
87373318 | 1215 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1216 | |
1217 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1218 | return; | |
7d578961 | 1219 | sysfs_remove_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1220 | } |
1221 | ||
ed49f5d0 | 1222 | static struct class_interface pccard_rsrc_interface __refdata = { |
1da177e4 | 1223 | .class = &pcmcia_socket_class, |
87373318 GKH |
1224 | .add_dev = &pccard_sysfs_add_rsrc, |
1225 | .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), | |
1da177e4 LT |
1226 | }; |
1227 | ||
1228 | static int __init nonstatic_sysfs_init(void) | |
1229 | { | |
1230 | return class_interface_register(&pccard_rsrc_interface); | |
1231 | } | |
1232 | ||
1233 | static void __exit nonstatic_sysfs_exit(void) | |
1234 | { | |
1235 | class_interface_unregister(&pccard_rsrc_interface); | |
1236 | } | |
1237 | ||
1238 | module_init(nonstatic_sysfs_init); | |
1239 | module_exit(nonstatic_sysfs_exit); |