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 LT |
31 | #include <pcmcia/ss.h> |
32 | #include <pcmcia/cs.h> | |
1da177e4 LT |
33 | #include <pcmcia/cistpl.h> |
34 | #include "cs_internal.h" | |
35 | ||
49b1153a | 36 | /* moved to rsrc_mgr.c |
1da177e4 LT |
37 | MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); |
38 | MODULE_LICENSE("GPL"); | |
49b1153a | 39 | */ |
1da177e4 LT |
40 | |
41 | /* Parameters that can be set with 'insmod' */ | |
42 | ||
43 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) | |
44 | ||
45 | INT_MODULE_PARM(probe_mem, 1); /* memory probe? */ | |
46 | #ifdef CONFIG_PCMCIA_PROBE | |
47 | INT_MODULE_PARM(probe_io, 1); /* IO port probe? */ | |
48 | INT_MODULE_PARM(mem_limit, 0x10000); | |
49 | #endif | |
50 | ||
51 | /* for io_db and mem_db */ | |
52 | struct resource_map { | |
53 | u_long base, num; | |
54 | struct resource_map *next; | |
55 | }; | |
56 | ||
57 | struct socket_data { | |
58 | struct resource_map mem_db; | |
7b4884ca | 59 | struct resource_map mem_db_valid; |
1da177e4 | 60 | struct resource_map io_db; |
1da177e4 LT |
61 | }; |
62 | ||
1da177e4 LT |
63 | #define MEM_PROBE_LOW (1 << 0) |
64 | #define MEM_PROBE_HIGH (1 << 1) | |
65 | ||
3dace8cf DB |
66 | /* Action field */ |
67 | #define REMOVE_MANAGED_RESOURCE 1 | |
68 | #define ADD_MANAGED_RESOURCE 2 | |
1da177e4 LT |
69 | |
70 | /*====================================================================== | |
71 | ||
72 | Linux resource management extensions | |
73 | ||
74 | ======================================================================*/ | |
75 | ||
1da177e4 | 76 | static struct resource * |
2427ddd8 GKH |
77 | claim_region(struct pcmcia_socket *s, resource_size_t base, |
78 | resource_size_t size, int type, char *name) | |
1da177e4 LT |
79 | { |
80 | struct resource *res, *parent; | |
81 | ||
82 | parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; | |
49b1153a | 83 | res = pcmcia_make_resource(base, size, type | IORESOURCE_BUSY, name); |
1da177e4 LT |
84 | |
85 | if (res) { | |
86 | #ifdef CONFIG_PCI | |
87 | if (s && s->cb_dev) | |
88 | parent = pci_find_parent_resource(s->cb_dev, res); | |
89 | #endif | |
90 | if (!parent || request_resource(parent, res)) { | |
91 | kfree(res); | |
92 | res = NULL; | |
93 | } | |
94 | } | |
95 | return res; | |
96 | } | |
97 | ||
98 | static void free_region(struct resource *res) | |
99 | { | |
100 | if (res) { | |
101 | release_resource(res); | |
102 | kfree(res); | |
103 | } | |
104 | } | |
105 | ||
106 | /*====================================================================== | |
107 | ||
108 | These manage the internal databases of available resources. | |
109 | ||
110 | ======================================================================*/ | |
111 | ||
112 | static int add_interval(struct resource_map *map, u_long base, u_long num) | |
113 | { | |
1168386a | 114 | struct resource_map *p, *q; |
1da177e4 | 115 | |
1168386a | 116 | for (p = map; ; p = p->next) { |
f309cb3e DB |
117 | if ((p != map) && (p->base+p->num >= base)) { |
118 | p->num = max(num + base - p->base, p->num); | |
119 | return 0; | |
120 | } | |
1168386a DB |
121 | if ((p->next == map) || (p->next->base > base+num-1)) |
122 | break; | |
123 | } | |
124 | q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
125 | if (!q) { | |
126 | printk(KERN_WARNING "out of memory to update resources\n"); | |
127 | return -ENOMEM; | |
128 | } | |
129 | q->base = base; q->num = num; | |
130 | q->next = p->next; p->next = q; | |
131 | return 0; | |
1da177e4 LT |
132 | } |
133 | ||
134 | /*====================================================================*/ | |
135 | ||
136 | static int sub_interval(struct resource_map *map, u_long base, u_long num) | |
137 | { | |
9fea84f4 DB |
138 | struct resource_map *p, *q; |
139 | ||
140 | for (p = map; ; p = q) { | |
141 | q = p->next; | |
142 | if (q == map) | |
143 | break; | |
144 | if ((q->base+q->num > base) && (base+num > q->base)) { | |
145 | if (q->base >= base) { | |
146 | if (q->base+q->num <= base+num) { | |
147 | /* Delete whole block */ | |
148 | p->next = q->next; | |
149 | kfree(q); | |
150 | /* don't advance the pointer yet */ | |
151 | q = p; | |
152 | } else { | |
153 | /* Cut off bit from the front */ | |
154 | q->num = q->base + q->num - base - num; | |
155 | q->base = base + num; | |
156 | } | |
157 | } else if (q->base+q->num <= base+num) { | |
158 | /* Cut off bit from the end */ | |
159 | q->num = base - q->base; | |
160 | } else { | |
161 | /* Split the block into two pieces */ | |
162 | p = kmalloc(sizeof(struct resource_map), | |
163 | GFP_KERNEL); | |
164 | if (!p) { | |
165 | printk(KERN_WARNING "out of memory to update resources\n"); | |
166 | return -ENOMEM; | |
167 | } | |
168 | p->base = base+num; | |
169 | p->num = q->base+q->num - p->base; | |
170 | q->num = base - q->base; | |
171 | p->next = q->next ; q->next = p; | |
172 | } | |
1168386a | 173 | } |
9fea84f4 DB |
174 | } |
175 | return 0; | |
1da177e4 LT |
176 | } |
177 | ||
178 | /*====================================================================== | |
179 | ||
180 | These routines examine a region of IO or memory addresses to | |
181 | determine what ranges might be genuinely available. | |
182 | ||
183 | ======================================================================*/ | |
184 | ||
185 | #ifdef CONFIG_PCMCIA_PROBE | |
906da809 OJ |
186 | static void do_io_probe(struct pcmcia_socket *s, unsigned int base, |
187 | unsigned int num) | |
1da177e4 | 188 | { |
9fea84f4 DB |
189 | struct resource *res; |
190 | struct socket_data *s_data = s->resource_data; | |
191 | unsigned int i, j, bad; | |
192 | int any; | |
193 | u_char *b, hole, most; | |
194 | ||
195 | dev_printk(KERN_INFO, &s->dev, "cs: IO port probe %#x-%#x:", | |
196 | base, base+num-1); | |
197 | ||
198 | /* First, what does a floating port look like? */ | |
199 | b = kzalloc(256, GFP_KERNEL); | |
200 | if (!b) { | |
201 | printk("\n"); | |
202 | dev_printk(KERN_ERR, &s->dev, | |
203 | "do_io_probe: unable to kmalloc 256 bytes"); | |
204 | return; | |
205 | } | |
206 | for (i = base, most = 0; i < base+num; i += 8) { | |
509b0865 | 207 | res = claim_region(s, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); |
9fea84f4 DB |
208 | if (!res) |
209 | continue; | |
210 | hole = inb(i); | |
211 | for (j = 1; j < 8; j++) | |
212 | if (inb(i+j) != hole) | |
213 | break; | |
214 | free_region(res); | |
215 | if ((j == 8) && (++b[hole] > b[most])) | |
216 | most = hole; | |
217 | if (b[most] == 127) | |
218 | break; | |
219 | } | |
220 | kfree(b); | |
221 | ||
222 | bad = any = 0; | |
223 | for (i = base; i < base+num; i += 8) { | |
509b0865 DB |
224 | res = claim_region(s, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); |
225 | if (!res) { | |
226 | if (!any) | |
227 | printk(" excluding"); | |
228 | if (!bad) | |
229 | bad = any = i; | |
9fea84f4 | 230 | continue; |
509b0865 | 231 | } |
9fea84f4 DB |
232 | for (j = 0; j < 8; j++) |
233 | if (inb(i+j) != most) | |
234 | break; | |
235 | free_region(res); | |
236 | if (j < 8) { | |
237 | if (!any) | |
238 | printk(" excluding"); | |
239 | if (!bad) | |
240 | bad = any = i; | |
241 | } else { | |
242 | if (bad) { | |
243 | sub_interval(&s_data->io_db, bad, i-bad); | |
244 | printk(" %#x-%#x", bad, i-1); | |
245 | bad = 0; | |
246 | } | |
247 | } | |
248 | } | |
249 | if (bad) { | |
250 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
509b0865 | 251 | sub_interval(&s_data->io_db, bad, i-bad); |
9fea84f4 DB |
252 | printk(" nothing: probe failed.\n"); |
253 | return; | |
254 | } else { | |
255 | sub_interval(&s_data->io_db, bad, i-bad); | |
256 | printk(" %#x-%#x", bad, i-1); | |
257 | } | |
258 | } | |
259 | ||
260 | printk(any ? "\n" : " clean.\n"); | |
1da177e4 LT |
261 | } |
262 | #endif | |
263 | ||
3f32b3c0 | 264 | /*======================================================================*/ |
1da177e4 | 265 | |
3f32b3c0 DB |
266 | /** |
267 | * readable() - iomem validation function for cards with a valid CIS | |
268 | */ | |
c5081d5f DB |
269 | static int readable(struct pcmcia_socket *s, struct resource *res, |
270 | unsigned int *count) | |
1da177e4 | 271 | { |
3f32b3c0 | 272 | int ret = -EINVAL; |
1da177e4 | 273 | |
7ab24855 DB |
274 | if (s->fake_cis) { |
275 | dev_dbg(&s->dev, "fake CIS is being used: can't validate mem\n"); | |
276 | return 0; | |
277 | } | |
1da177e4 LT |
278 | |
279 | s->cis_mem.res = res; | |
280 | s->cis_virt = ioremap(res->start, s->map_size); | |
281 | if (s->cis_virt) { | |
6b8e087b | 282 | mutex_unlock(&s->ops_mutex); |
6e7b51a7 DB |
283 | /* as we're only called from pcmcia.c, we're safe */ |
284 | if (s->callback->validate) | |
285 | ret = s->callback->validate(s, count); | |
904e3777 | 286 | /* invalidate mapping */ |
6b8e087b | 287 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
288 | iounmap(s->cis_virt); |
289 | s->cis_virt = NULL; | |
1da177e4 LT |
290 | } |
291 | s->cis_mem.res = NULL; | |
3f32b3c0 DB |
292 | if ((ret) || (*count == 0)) |
293 | return -EINVAL; | |
294 | return 0; | |
1da177e4 LT |
295 | } |
296 | ||
3f32b3c0 DB |
297 | /** |
298 | * checksum() - iomem validation function for simple memory cards | |
299 | */ | |
300 | static int checksum(struct pcmcia_socket *s, struct resource *res, | |
301 | unsigned int *value) | |
1da177e4 LT |
302 | { |
303 | pccard_mem_map map; | |
304 | int i, a = 0, b = -1, d; | |
305 | void __iomem *virt; | |
306 | ||
307 | virt = ioremap(res->start, s->map_size); | |
308 | if (virt) { | |
309 | map.map = 0; | |
310 | map.flags = MAP_ACTIVE; | |
311 | map.speed = 0; | |
312 | map.res = res; | |
313 | map.card_start = 0; | |
314 | s->ops->set_mem_map(s, &map); | |
315 | ||
316 | /* Don't bother checking every word... */ | |
317 | for (i = 0; i < s->map_size; i += 44) { | |
318 | d = readl(virt+i); | |
319 | a += d; | |
320 | b &= d; | |
321 | } | |
322 | ||
323 | map.flags = 0; | |
324 | s->ops->set_mem_map(s, &map); | |
325 | ||
326 | iounmap(virt); | |
327 | } | |
328 | ||
3f32b3c0 DB |
329 | if (b == -1) |
330 | return -EINVAL; | |
1da177e4 | 331 | |
3f32b3c0 | 332 | *value = a; |
1da177e4 | 333 | |
3f32b3c0 | 334 | return 0; |
1da177e4 LT |
335 | } |
336 | ||
3f32b3c0 DB |
337 | /** |
338 | * do_validate_mem() - low level validate a memory region for PCMCIA use | |
339 | * @s: PCMCIA socket to validate | |
340 | * @base: start address of resource to check | |
341 | * @size: size of resource to check | |
342 | * @validate: validation function to use | |
343 | * | |
344 | * do_validate_mem() splits up the memory region which is to be checked | |
345 | * into two parts. Both are passed to the @validate() function. If | |
346 | * @validate() returns non-zero, or the value parameter to @validate() | |
347 | * is zero, or the value parameter is different between both calls, | |
348 | * the check fails, and -EINVAL is returned. Else, 0 is returned. | |
349 | */ | |
350 | static int do_validate_mem(struct pcmcia_socket *s, | |
351 | unsigned long base, unsigned long size, | |
352 | int validate (struct pcmcia_socket *s, | |
353 | struct resource *res, | |
354 | unsigned int *value)) | |
1da177e4 | 355 | { |
7b4884ca | 356 | struct socket_data *s_data = s->resource_data; |
1da177e4 | 357 | struct resource *res1, *res2; |
3f32b3c0 DB |
358 | unsigned int info1 = 1, info2 = 1; |
359 | int ret = -EINVAL; | |
1da177e4 | 360 | |
9fea84f4 DB |
361 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); |
362 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, | |
363 | "PCMCIA memprobe"); | |
1da177e4 LT |
364 | |
365 | if (res1 && res2) { | |
3f32b3c0 DB |
366 | ret = 0; |
367 | if (validate) { | |
368 | ret = validate(s, res1, &info1); | |
369 | ret += validate(s, res2, &info2); | |
370 | } | |
1da177e4 LT |
371 | } |
372 | ||
373 | free_region(res2); | |
374 | free_region(res1); | |
375 | ||
3f32b3c0 DB |
376 | dev_dbg(&s->dev, "cs: memory probe 0x%06lx-0x%06lx: %p %p %u %u %u", |
377 | base, base+size-1, res1, res2, ret, info1, info2); | |
1da177e4 | 378 | |
3f32b3c0 DB |
379 | if ((ret) || (info1 != info2) || (info1 == 0)) |
380 | return -EINVAL; | |
1da177e4 | 381 | |
7b4884ca DB |
382 | if (validate && !s->fake_cis) { |
383 | /* move it to the validated data set */ | |
384 | add_interval(&s_data->mem_db_valid, base, size); | |
385 | sub_interval(&s_data->mem_db, base, size); | |
1da177e4 LT |
386 | } |
387 | ||
3f32b3c0 | 388 | return 0; |
1da177e4 LT |
389 | } |
390 | ||
1da177e4 | 391 | |
3f32b3c0 DB |
392 | /** |
393 | * do_mem_probe() - validate a memory region for PCMCIA use | |
394 | * @s: PCMCIA socket to validate | |
395 | * @base: start address of resource to check | |
396 | * @num: size of resource to check | |
397 | * @validate: validation function to use | |
398 | * @fallback: validation function to use if validate fails | |
399 | * | |
400 | * do_mem_probe() checks a memory region for use by the PCMCIA subsystem. | |
401 | * To do so, the area is split up into sensible parts, and then passed | |
402 | * into the @validate() function. Only if @validate() and @fallback() fail, | |
403 | * the area is marked as unavaibale for use by the PCMCIA subsystem. The | |
404 | * function returns the size of the usable memory area. | |
405 | */ | |
406 | static int do_mem_probe(struct pcmcia_socket *s, u_long base, u_long num, | |
407 | int validate (struct pcmcia_socket *s, | |
408 | struct resource *res, | |
409 | unsigned int *value), | |
410 | int fallback (struct pcmcia_socket *s, | |
411 | struct resource *res, | |
412 | unsigned int *value)) | |
1da177e4 | 413 | { |
9fea84f4 DB |
414 | struct socket_data *s_data = s->resource_data; |
415 | u_long i, j, bad, fail, step; | |
416 | ||
417 | dev_printk(KERN_INFO, &s->dev, "cs: memory probe 0x%06lx-0x%06lx:", | |
418 | base, base+num-1); | |
419 | bad = fail = 0; | |
420 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
421 | /* don't allow too large steps */ | |
422 | if (step > 0x800000) | |
423 | step = 0x800000; | |
424 | /* cis_readable wants to map 2x map_size */ | |
425 | if (step < 2 * s->map_size) | |
426 | step = 2 * s->map_size; | |
427 | for (i = j = base; i < base+num; i = j + step) { | |
428 | if (!fail) { | |
429 | for (j = i; j < base+num; j += step) { | |
3f32b3c0 | 430 | if (!do_validate_mem(s, j, step, validate)) |
9fea84f4 DB |
431 | break; |
432 | } | |
433 | fail = ((i == base) && (j == base+num)); | |
434 | } | |
3f32b3c0 DB |
435 | if ((fail) && (fallback)) { |
436 | for (j = i; j < base+num; j += step) | |
437 | if (!do_validate_mem(s, j, step, fallback)) | |
9fea84f4 DB |
438 | break; |
439 | } | |
440 | if (i != j) { | |
441 | if (!bad) | |
442 | printk(" excluding"); | |
443 | printk(" %#05lx-%#05lx", i, j-1); | |
444 | sub_interval(&s_data->mem_db, i, j-i); | |
445 | bad += j-i; | |
446 | } | |
447 | } | |
448 | printk(bad ? "\n" : " clean.\n"); | |
449 | return num - bad; | |
1da177e4 LT |
450 | } |
451 | ||
3f32b3c0 | 452 | |
1da177e4 LT |
453 | #ifdef CONFIG_PCMCIA_PROBE |
454 | ||
3f32b3c0 DB |
455 | /** |
456 | * inv_probe() - top-to-bottom search for one usuable high memory area | |
457 | * @s: PCMCIA socket to validate | |
458 | * @m: resource_map to check | |
459 | */ | |
1da177e4 LT |
460 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) |
461 | { | |
de75914e DB |
462 | struct socket_data *s_data = s->resource_data; |
463 | u_long ok; | |
464 | if (m == &s_data->mem_db) | |
465 | return 0; | |
466 | ok = inv_probe(m->next, s); | |
467 | if (ok) { | |
468 | if (m->base >= 0x100000) | |
469 | sub_interval(&s_data->mem_db, m->base, m->num); | |
470 | return ok; | |
471 | } | |
472 | if (m->base < 0x100000) | |
473 | return 0; | |
3f32b3c0 | 474 | return do_mem_probe(s, m->base, m->num, readable, checksum); |
1da177e4 LT |
475 | } |
476 | ||
3f32b3c0 DB |
477 | /** |
478 | * validate_mem() - memory probe function | |
479 | * @s: PCMCIA socket to validate | |
480 | * @probe_mask: MEM_PROBE_LOW | MEM_PROBE_HIGH | |
481 | * | |
482 | * The memory probe. If the memory list includes a 64K-aligned block | |
483 | * below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
484 | * least mem_limit free space, we quit. Returns 0 on usuable ports. | |
485 | */ | |
de75914e | 486 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 487 | { |
de75914e DB |
488 | struct resource_map *m, mm; |
489 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
490 | unsigned long b, i, ok = 0; | |
491 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 492 | |
de75914e DB |
493 | /* We do up to four passes through the list */ |
494 | if (probe_mask & MEM_PROBE_HIGH) { | |
495 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
496 | return 0; | |
7b4884ca DB |
497 | if (s_data->mem_db_valid.next != &s_data->mem_db_valid) |
498 | return 0; | |
dbe4ea5f DB |
499 | dev_printk(KERN_NOTICE, &s->dev, |
500 | "cs: warning: no high memory space available!\n"); | |
de75914e | 501 | return -ENODEV; |
1da177e4 | 502 | } |
de75914e DB |
503 | |
504 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
505 | mm = *m; | |
506 | /* Only probe < 1 MB */ | |
507 | if (mm.base >= 0x100000) | |
508 | continue; | |
509 | if ((mm.base | mm.num) & 0xffff) { | |
3f32b3c0 DB |
510 | ok += do_mem_probe(s, mm.base, mm.num, readable, |
511 | checksum); | |
de75914e DB |
512 | continue; |
513 | } | |
514 | /* Special probe for 64K-aligned block */ | |
515 | for (i = 0; i < 4; i++) { | |
516 | b = order[i] << 12; | |
517 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
518 | if (ok >= mem_limit) | |
519 | sub_interval(&s_data->mem_db, b, 0x10000); | |
520 | else | |
3f32b3c0 DB |
521 | ok += do_mem_probe(s, b, 0x10000, |
522 | readable, checksum); | |
de75914e DB |
523 | } |
524 | } | |
1da177e4 | 525 | } |
de75914e DB |
526 | |
527 | if (ok > 0) | |
528 | return 0; | |
529 | ||
530 | return -ENODEV; | |
1da177e4 LT |
531 | } |
532 | ||
533 | #else /* CONFIG_PCMCIA_PROBE */ | |
534 | ||
3f32b3c0 DB |
535 | /** |
536 | * validate_mem() - memory probe function | |
537 | * @s: PCMCIA socket to validate | |
538 | * @probe_mask: ignored | |
539 | * | |
540 | * Returns 0 on usuable ports. | |
541 | */ | |
2cff9447 | 542 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 LT |
543 | { |
544 | struct resource_map *m, mm; | |
545 | struct socket_data *s_data = s->resource_data; | |
2cff9447 | 546 | unsigned long ok = 0; |
1da177e4 LT |
547 | |
548 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
549 | mm = *m; | |
3f32b3c0 | 550 | ok += do_mem_probe(s, mm.base, mm.num, readable, checksum); |
1da177e4 | 551 | } |
2cff9447 AM |
552 | if (ok > 0) |
553 | return 0; | |
554 | return -ENODEV; | |
1da177e4 LT |
555 | } |
556 | ||
557 | #endif /* CONFIG_PCMCIA_PROBE */ | |
558 | ||
559 | ||
3f32b3c0 DB |
560 | /** |
561 | * pcmcia_nonstatic_validate_mem() - try to validate iomem for PCMCIA use | |
562 | * @s: PCMCIA socket to validate | |
563 | * | |
564 | * This is tricky... when we set up CIS memory, we try to validate | |
565 | * the memory window space allocations. | |
566 | * | |
7fe908dd | 567 | * Locking note: Must be called with skt_mutex held! |
1da177e4 | 568 | */ |
de75914e | 569 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
570 | { |
571 | struct socket_data *s_data = s->resource_data; | |
de75914e | 572 | unsigned int probe_mask = MEM_PROBE_LOW; |
7b4884ca | 573 | int ret; |
de75914e | 574 | |
7b4884ca | 575 | if (!probe_mem || !(s->state & SOCKET_PRESENT)) |
de75914e | 576 | return 0; |
1da177e4 | 577 | |
de75914e DB |
578 | if (s->features & SS_CAP_PAGE_REGS) |
579 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 580 | |
7b4884ca | 581 | ret = validate_mem(s, probe_mask); |
1da177e4 | 582 | |
7b4884ca DB |
583 | if (s_data->mem_db_valid.next != &s_data->mem_db_valid) |
584 | return 0; | |
1da177e4 | 585 | |
de75914e | 586 | return ret; |
1da177e4 LT |
587 | } |
588 | ||
589 | struct pcmcia_align_data { | |
590 | unsigned long mask; | |
591 | unsigned long offset; | |
592 | struct resource_map *map; | |
593 | }; | |
594 | ||
147a2746 DB |
595 | static resource_size_t pcmcia_common_align(struct pcmcia_align_data *align_data, |
596 | resource_size_t start) | |
1da177e4 | 597 | { |
147a2746 | 598 | resource_size_t ret; |
1da177e4 LT |
599 | /* |
600 | * Ensure that we have the correct start address | |
601 | */ | |
147a2746 DB |
602 | ret = (start & ~align_data->mask) + align_data->offset; |
603 | if (ret < start) | |
604 | ret += align_data->mask + 1; | |
605 | return ret; | |
1da177e4 LT |
606 | } |
607 | ||
b26b2d49 | 608 | static resource_size_t |
3b7a17fc DB |
609 | pcmcia_align(void *align_data, const struct resource *res, |
610 | resource_size_t size, resource_size_t align) | |
1da177e4 LT |
611 | { |
612 | struct pcmcia_align_data *data = align_data; | |
613 | struct resource_map *m; | |
b26b2d49 | 614 | resource_size_t start; |
1da177e4 | 615 | |
147a2746 | 616 | start = pcmcia_common_align(data, res->start); |
1da177e4 LT |
617 | |
618 | for (m = data->map->next; m != data->map; m = m->next) { | |
147a2746 DB |
619 | unsigned long map_start = m->base; |
620 | unsigned long map_end = m->base + m->num - 1; | |
1da177e4 LT |
621 | |
622 | /* | |
623 | * If the lower resources are not available, try aligning | |
624 | * to this entry of the resource database to see if it'll | |
625 | * fit here. | |
626 | */ | |
147a2746 DB |
627 | if (start < map_start) |
628 | start = pcmcia_common_align(data, map_start); | |
1da177e4 LT |
629 | |
630 | /* | |
631 | * If we're above the area which was passed in, there's | |
632 | * no point proceeding. | |
633 | */ | |
147a2746 | 634 | if (start >= res->end) |
1da177e4 LT |
635 | break; |
636 | ||
147a2746 | 637 | if ((start + size - 1) <= map_end) |
1da177e4 LT |
638 | break; |
639 | } | |
640 | ||
641 | /* | |
642 | * If we failed to find something suitable, ensure we fail. | |
643 | */ | |
644 | if (m == data->map) | |
b26b2d49 DB |
645 | start = res->end; |
646 | ||
647 | return start; | |
1da177e4 LT |
648 | } |
649 | ||
650 | /* | |
651 | * Adjust an existing IO region allocation, but making sure that we don't | |
652 | * encroach outside the resources which the user supplied. | |
653 | */ | |
b19a7275 DB |
654 | static int __nonstatic_adjust_io_region(struct pcmcia_socket *s, |
655 | unsigned long r_start, | |
656 | unsigned long r_end) | |
1da177e4 LT |
657 | { |
658 | struct resource_map *m; | |
659 | struct socket_data *s_data = s->resource_data; | |
660 | int ret = -ENOMEM; | |
661 | ||
1da177e4 LT |
662 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { |
663 | unsigned long start = m->base; | |
664 | unsigned long end = m->base + m->num - 1; | |
665 | ||
666 | if (start > r_start || r_end > end) | |
667 | continue; | |
668 | ||
b19a7275 | 669 | ret = 0; |
1da177e4 | 670 | } |
1da177e4 LT |
671 | |
672 | return ret; | |
673 | } | |
674 | ||
675 | /*====================================================================== | |
676 | ||
677 | These find ranges of I/O ports or memory addresses that are not | |
678 | currently allocated by other devices. | |
679 | ||
680 | The 'align' field should reflect the number of bits of address | |
681 | that need to be preserved from the initial value of *base. It | |
682 | should be a power of two, greater than or equal to 'num'. A value | |
683 | of 0 means that all bits of *base are significant. *base should | |
684 | also be strictly less than 'align'. | |
685 | ||
686 | ======================================================================*/ | |
687 | ||
b19a7275 DB |
688 | static struct resource *__nonstatic_find_io_region(struct pcmcia_socket *s, |
689 | unsigned long base, int num, | |
690 | unsigned long align) | |
1da177e4 | 691 | { |
49b1153a DB |
692 | struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_IO, |
693 | dev_name(&s->dev)); | |
1da177e4 LT |
694 | struct socket_data *s_data = s->resource_data; |
695 | struct pcmcia_align_data data; | |
696 | unsigned long min = base; | |
697 | int ret; | |
698 | ||
1da177e4 LT |
699 | data.mask = align - 1; |
700 | data.offset = base & data.mask; | |
701 | data.map = &s_data->io_db; | |
702 | ||
1da177e4 LT |
703 | #ifdef CONFIG_PCI |
704 | if (s->cb_dev) { | |
705 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
706 | min, 0, pcmcia_align, &data); | |
707 | } else | |
708 | #endif | |
709 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
710 | 1, pcmcia_align, &data); | |
1da177e4 LT |
711 | |
712 | if (ret != 0) { | |
713 | kfree(res); | |
714 | res = NULL; | |
715 | } | |
716 | return res; | |
717 | } | |
718 | ||
b19a7275 DB |
719 | static int nonstatic_find_io(struct pcmcia_socket *s, unsigned int attr, |
720 | unsigned int *base, unsigned int num, | |
ad0c7be2 | 721 | unsigned int align, struct resource **parent) |
b19a7275 DB |
722 | { |
723 | int i, ret = 0; | |
724 | ||
725 | /* Check for an already-allocated window that must conflict with | |
726 | * what was asked for. It is a hack because it does not catch all | |
727 | * potential conflicts, just the most obvious ones. | |
728 | */ | |
729 | for (i = 0; i < MAX_IO_WIN; i++) { | |
730 | if (!s->io[i].res) | |
731 | continue; | |
732 | ||
733 | if (!*base) | |
734 | continue; | |
735 | ||
736 | if ((s->io[i].res->start & (align-1)) == *base) | |
737 | return -EBUSY; | |
738 | } | |
739 | ||
740 | for (i = 0; i < MAX_IO_WIN; i++) { | |
741 | struct resource *res = s->io[i].res; | |
742 | unsigned int try; | |
743 | ||
744 | if (res && (res->flags & IORESOURCE_BITS) != | |
745 | (attr & IORESOURCE_BITS)) | |
746 | continue; | |
747 | ||
748 | if (!res) { | |
749 | if (align == 0) | |
750 | align = 0x10000; | |
751 | ||
752 | res = s->io[i].res = __nonstatic_find_io_region(s, | |
753 | *base, num, | |
754 | align); | |
755 | if (!res) | |
756 | return -EINVAL; | |
757 | ||
758 | *base = res->start; | |
759 | s->io[i].res->flags = | |
760 | ((res->flags & ~IORESOURCE_BITS) | | |
761 | (attr & IORESOURCE_BITS)); | |
762 | s->io[i].InUse = num; | |
ad0c7be2 | 763 | *parent = res; |
b19a7275 DB |
764 | return 0; |
765 | } | |
766 | ||
767 | /* Try to extend top of window */ | |
768 | try = res->end + 1; | |
769 | if ((*base == 0) || (*base == try)) { | |
770 | ret = __nonstatic_adjust_io_region(s, res->start, | |
771 | res->end + num); | |
772 | if (!ret) { | |
773 | ret = adjust_resource(s->io[i].res, res->start, | |
774 | res->end - res->start + num + 1); | |
775 | if (ret) | |
776 | continue; | |
777 | *base = try; | |
778 | s->io[i].InUse += num; | |
ad0c7be2 | 779 | *parent = res; |
b19a7275 DB |
780 | return 0; |
781 | } | |
782 | } | |
783 | ||
784 | /* Try to extend bottom of window */ | |
785 | try = res->start - num; | |
786 | if ((*base == 0) || (*base == try)) { | |
787 | ret = __nonstatic_adjust_io_region(s, | |
788 | res->start - num, | |
789 | res->end); | |
790 | if (!ret) { | |
791 | ret = adjust_resource(s->io[i].res, | |
792 | res->start - num, | |
793 | res->end - res->start + num + 1); | |
794 | if (ret) | |
795 | continue; | |
796 | *base = try; | |
797 | s->io[i].InUse += num; | |
ad0c7be2 | 798 | *parent = res; |
b19a7275 DB |
799 | return 0; |
800 | } | |
801 | } | |
802 | } | |
803 | ||
804 | return -EINVAL; | |
805 | } | |
806 | ||
807 | ||
9fea84f4 | 808 | static struct resource *nonstatic_find_mem_region(u_long base, u_long num, |
e94e15f7 | 809 | u_long align, int low, struct pcmcia_socket *s) |
1da177e4 | 810 | { |
49b1153a DB |
811 | struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_MEM, |
812 | dev_name(&s->dev)); | |
1da177e4 LT |
813 | struct socket_data *s_data = s->resource_data; |
814 | struct pcmcia_align_data data; | |
815 | unsigned long min, max; | |
7b4884ca | 816 | int ret, i, j; |
1da177e4 LT |
817 | |
818 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
819 | ||
820 | data.mask = align - 1; | |
821 | data.offset = base & data.mask; | |
1da177e4 LT |
822 | |
823 | for (i = 0; i < 2; i++) { | |
7b4884ca | 824 | data.map = &s_data->mem_db_valid; |
1da177e4 LT |
825 | if (low) { |
826 | max = 0x100000UL; | |
827 | min = base < max ? base : 0; | |
828 | } else { | |
829 | max = ~0UL; | |
830 | min = 0x100000UL + base; | |
831 | } | |
832 | ||
7b4884ca | 833 | for (j = 0; j < 2; j++) { |
1da177e4 | 834 | #ifdef CONFIG_PCI |
7b4884ca DB |
835 | if (s->cb_dev) { |
836 | ret = pci_bus_alloc_resource(s->cb_dev->bus, | |
837 | res, num, 1, min, 0, | |
838 | pcmcia_align, &data); | |
839 | } else | |
1da177e4 | 840 | #endif |
7b4884ca DB |
841 | { |
842 | ret = allocate_resource(&iomem_resource, | |
843 | res, num, min, max, 1, | |
844 | pcmcia_align, &data); | |
845 | } | |
846 | if (ret == 0) | |
847 | break; | |
848 | data.map = &s_data->mem_db; | |
849 | } | |
1da177e4 LT |
850 | if (ret == 0 || low) |
851 | break; | |
852 | low = 1; | |
853 | } | |
854 | ||
855 | if (ret != 0) { | |
856 | kfree(res); | |
857 | res = NULL; | |
858 | } | |
859 | return res; | |
860 | } | |
861 | ||
862 | ||
22916638 | 863 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 864 | { |
1da177e4 | 865 | struct socket_data *data = s->resource_data; |
22916638 DB |
866 | unsigned long size = end - start + 1; |
867 | int ret = 0; | |
1da177e4 | 868 | |
1146bc74 | 869 | if (end < start) |
22916638 | 870 | return -EINVAL; |
1da177e4 | 871 | |
22916638 | 872 | switch (action) { |
1da177e4 | 873 | case ADD_MANAGED_RESOURCE: |
22916638 | 874 | ret = add_interval(&data->mem_db, start, size); |
3f32b3c0 DB |
875 | if (!ret) |
876 | do_mem_probe(s, start, size, NULL, NULL); | |
1da177e4 LT |
877 | break; |
878 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 879 | ret = sub_interval(&data->mem_db, start, size); |
1da177e4 LT |
880 | break; |
881 | default: | |
22916638 | 882 | ret = -EINVAL; |
1da177e4 | 883 | } |
1da177e4 LT |
884 | |
885 | return ret; | |
886 | } | |
887 | ||
888 | ||
22916638 | 889 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
890 | { |
891 | struct socket_data *data = s->resource_data; | |
41b97ab5 | 892 | unsigned long size; |
22916638 | 893 | int ret = 0; |
1da177e4 | 894 | |
9713ab28 DB |
895 | #if defined(CONFIG_X86) |
896 | /* on x86, avoid anything < 0x100 for it is often used for | |
897 | * legacy platform devices */ | |
898 | if (start < 0x100) | |
899 | start = 0x100; | |
900 | #endif | |
901 | ||
41b97ab5 DB |
902 | size = end - start + 1; |
903 | ||
1146bc74 | 904 | if (end < start) |
22916638 DB |
905 | return -EINVAL; |
906 | ||
907 | if (end > IO_SPACE_LIMIT) | |
908 | return -EINVAL; | |
1da177e4 | 909 | |
22916638 | 910 | switch (action) { |
1da177e4 | 911 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
912 | if (add_interval(&data->io_db, start, size) != 0) { |
913 | ret = -EBUSY; | |
1da177e4 LT |
914 | break; |
915 | } | |
916 | #ifdef CONFIG_PCMCIA_PROBE | |
917 | if (probe_io) | |
22916638 | 918 | do_io_probe(s, start, size); |
1da177e4 LT |
919 | #endif |
920 | break; | |
921 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 922 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
923 | break; |
924 | default: | |
22916638 | 925 | ret = -EINVAL; |
1da177e4 LT |
926 | break; |
927 | } | |
1da177e4 LT |
928 | |
929 | return ret; | |
930 | } | |
931 | ||
932 | ||
3c29976a DB |
933 | #ifdef CONFIG_PCI |
934 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
935 | { | |
936 | struct resource *res; | |
937 | int i, done = 0; | |
938 | ||
939 | if (!s->cb_dev || !s->cb_dev->bus) | |
940 | return -ENODEV; | |
941 | ||
0d078f6f | 942 | #if defined(CONFIG_X86) |
cf26e8dc DB |
943 | /* If this is the root bus, the risk of hitting some strange |
944 | * system devices is too high: If a driver isn't loaded, the | |
945 | * resources are not claimed; even if a driver is loaded, it | |
946 | * may not request all resources or even the wrong one. We | |
947 | * can neither trust the rest of the kernel nor ACPI/PNP and | |
948 | * CRS parsing to get it right. Therefore, use several | |
949 | * safeguards: | |
950 | * | |
951 | * - Do not auto-add resources if the CardBus bridge is on | |
952 | * the PCI root bus | |
953 | * | |
954 | * - Avoid any I/O ports < 0x100. | |
955 | * | |
956 | * - On PCI-PCI bridges, only use resources which are set up | |
957 | * exclusively for the secondary PCI bus: the risk of hitting | |
958 | * system devices is quite low, as they usually aren't | |
959 | * connected to the secondary PCI bus. | |
b6d00f0d DB |
960 | */ |
961 | if (s->cb_dev->bus->number == 0) | |
962 | return -EINVAL; | |
b6d00f0d | 963 | |
cf26e8dc DB |
964 | for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) { |
965 | res = s->cb_dev->bus->resource[i]; | |
966 | #else | |
89a74ecc | 967 | pci_bus_for_each_resource(s->cb_dev->bus, res, i) { |
cf26e8dc | 968 | #endif |
3c29976a DB |
969 | if (!res) |
970 | continue; | |
971 | ||
972 | if (res->flags & IORESOURCE_IO) { | |
cf26e8dc DB |
973 | /* safeguard against the root resource, where the |
974 | * risk of hitting any other device would be too | |
975 | * high */ | |
3c29976a DB |
976 | if (res == &ioport_resource) |
977 | continue; | |
cf26e8dc | 978 | |
dbe4ea5f | 979 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
e1944c6b BH |
980 | "pcmcia: parent PCI bridge window: %pR\n", |
981 | res); | |
3c29976a DB |
982 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
983 | done |= IORESOURCE_IO; | |
984 | ||
985 | } | |
986 | ||
987 | if (res->flags & IORESOURCE_MEM) { | |
cf26e8dc DB |
988 | /* safeguard against the root resource, where the |
989 | * risk of hitting any other device would be too | |
990 | * high */ | |
3c29976a DB |
991 | if (res == &iomem_resource) |
992 | continue; | |
cf26e8dc | 993 | |
dbe4ea5f | 994 | dev_printk(KERN_INFO, &s->cb_dev->dev, |
e1944c6b BH |
995 | "pcmcia: parent PCI bridge window: %pR\n", |
996 | res); | |
3c29976a DB |
997 | if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
998 | done |= IORESOURCE_MEM; | |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* if we got at least one of IO, and one of MEM, we can be glad and | |
1003 | * activate the PCMCIA subsystem */ | |
54bb5675 | 1004 | if (done == (IORESOURCE_MEM | IORESOURCE_IO)) |
3c29976a DB |
1005 | s->resource_setup_done = 1; |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | #else | |
1011 | ||
1012 | static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
1013 | { | |
1014 | return -ENODEV; | |
1015 | } | |
1016 | ||
1017 | #endif | |
1018 | ||
1019 | ||
1da177e4 LT |
1020 | static int nonstatic_init(struct pcmcia_socket *s) |
1021 | { | |
1022 | struct socket_data *data; | |
1023 | ||
8084b372 | 1024 | data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); |
1da177e4 LT |
1025 | if (!data) |
1026 | return -ENOMEM; | |
1da177e4 LT |
1027 | |
1028 | data->mem_db.next = &data->mem_db; | |
7b4884ca | 1029 | data->mem_db_valid.next = &data->mem_db_valid; |
1da177e4 LT |
1030 | data->io_db.next = &data->io_db; |
1031 | ||
1032 | s->resource_data = (void *) data; | |
1033 | ||
3c29976a DB |
1034 | nonstatic_autoadd_resources(s); |
1035 | ||
1da177e4 LT |
1036 | return 0; |
1037 | } | |
1038 | ||
1039 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
1040 | { | |
1041 | struct socket_data *data = s->resource_data; | |
1042 | struct resource_map *p, *q; | |
1043 | ||
7b4884ca DB |
1044 | for (p = data->mem_db_valid.next; p != &data->mem_db_valid; p = q) { |
1045 | q = p->next; | |
1046 | kfree(p); | |
1047 | } | |
1da177e4 LT |
1048 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { |
1049 | q = p->next; | |
1050 | kfree(p); | |
1051 | } | |
1052 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
1053 | q = p->next; | |
1054 | kfree(p); | |
1055 | } | |
1da177e4 LT |
1056 | } |
1057 | ||
1058 | ||
1059 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
1060 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
b19a7275 | 1061 | .find_io = nonstatic_find_io, |
1da177e4 | 1062 | .find_mem = nonstatic_find_mem_region, |
1da177e4 LT |
1063 | .init = nonstatic_init, |
1064 | .exit = nonstatic_release_resource_db, | |
1065 | }; | |
1066 | EXPORT_SYMBOL(pccard_nonstatic_ops); | |
1067 | ||
1068 | ||
1069 | /* sysfs interface to the resource database */ | |
1070 | ||
87373318 GKH |
1071 | static ssize_t show_io_db(struct device *dev, |
1072 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1073 | { |
87373318 | 1074 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1075 | struct socket_data *data; |
1076 | struct resource_map *p; | |
1077 | ssize_t ret = 0; | |
1078 | ||
cfe5d809 | 1079 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
1080 | data = s->resource_data; |
1081 | ||
1082 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
1083 | if (ret > (PAGE_SIZE - 10)) | |
1084 | continue; | |
9fea84f4 DB |
1085 | ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
1086 | "0x%08lx - 0x%08lx\n", | |
1087 | ((unsigned long) p->base), | |
1088 | ((unsigned long) p->base + p->num - 1)); | |
1da177e4 LT |
1089 | } |
1090 | ||
cfe5d809 | 1091 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 1092 | return ret; |
1da177e4 LT |
1093 | } |
1094 | ||
87373318 GKH |
1095 | static ssize_t store_io_db(struct device *dev, |
1096 | struct device_attribute *attr, | |
1097 | const char *buf, size_t count) | |
1da177e4 | 1098 | { |
87373318 | 1099 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 1100 | unsigned long start_addr, end_addr; |
22916638 | 1101 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1102 | ssize_t ret = 0; |
1103 | ||
9fea84f4 | 1104 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 1105 | if (ret != 2) { |
9fea84f4 | 1106 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 1107 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 1108 | if (ret != 2) { |
9fea84f4 DB |
1109 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
1110 | &end_addr); | |
22916638 | 1111 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1112 | if (ret != 2) |
1113 | return -EINVAL; | |
1114 | } | |
1115 | } | |
1146bc74 | 1116 | if (end_addr < start_addr) |
1da177e4 LT |
1117 | return -EINVAL; |
1118 | ||
cfe5d809 | 1119 | mutex_lock(&s->ops_mutex); |
22916638 | 1120 | ret = adjust_io(s, add, start_addr, end_addr); |
cfe5d809 | 1121 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
1122 | |
1123 | return ret ? ret : count; | |
1124 | } | |
87373318 | 1125 | static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); |
1da177e4 | 1126 | |
87373318 GKH |
1127 | static ssize_t show_mem_db(struct device *dev, |
1128 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1129 | { |
87373318 | 1130 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1131 | struct socket_data *data; |
1132 | struct resource_map *p; | |
1133 | ssize_t ret = 0; | |
1134 | ||
cfe5d809 | 1135 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
1136 | data = s->resource_data; |
1137 | ||
7b4884ca DB |
1138 | for (p = data->mem_db_valid.next; p != &data->mem_db_valid; |
1139 | p = p->next) { | |
1140 | if (ret > (PAGE_SIZE - 10)) | |
1141 | continue; | |
1142 | ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), | |
1143 | "0x%08lx - 0x%08lx\n", | |
1144 | ((unsigned long) p->base), | |
1145 | ((unsigned long) p->base + p->num - 1)); | |
1146 | } | |
1147 | ||
1da177e4 LT |
1148 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { |
1149 | if (ret > (PAGE_SIZE - 10)) | |
1150 | continue; | |
9fea84f4 DB |
1151 | ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
1152 | "0x%08lx - 0x%08lx\n", | |
1153 | ((unsigned long) p->base), | |
1154 | ((unsigned long) p->base + p->num - 1)); | |
1da177e4 LT |
1155 | } |
1156 | ||
cfe5d809 | 1157 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 1158 | return ret; |
1da177e4 LT |
1159 | } |
1160 | ||
87373318 GKH |
1161 | static ssize_t store_mem_db(struct device *dev, |
1162 | struct device_attribute *attr, | |
1163 | const char *buf, size_t count) | |
1da177e4 | 1164 | { |
87373318 | 1165 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 1166 | unsigned long start_addr, end_addr; |
22916638 | 1167 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1168 | ssize_t ret = 0; |
1169 | ||
9fea84f4 | 1170 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 1171 | if (ret != 2) { |
9fea84f4 | 1172 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 1173 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 1174 | if (ret != 2) { |
9fea84f4 DB |
1175 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
1176 | &end_addr); | |
22916638 | 1177 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1178 | if (ret != 2) |
1179 | return -EINVAL; | |
1180 | } | |
1181 | } | |
1146bc74 | 1182 | if (end_addr < start_addr) |
1da177e4 LT |
1183 | return -EINVAL; |
1184 | ||
cfe5d809 | 1185 | mutex_lock(&s->ops_mutex); |
22916638 | 1186 | ret = adjust_memory(s, add, start_addr, end_addr); |
cfe5d809 | 1187 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
1188 | |
1189 | return ret ? ret : count; | |
1190 | } | |
87373318 | 1191 | static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); |
1da177e4 | 1192 | |
7d578961 DB |
1193 | static struct attribute *pccard_rsrc_attributes[] = { |
1194 | &dev_attr_available_resources_io.attr, | |
1195 | &dev_attr_available_resources_mem.attr, | |
1da177e4 LT |
1196 | NULL, |
1197 | }; | |
1198 | ||
7d578961 DB |
1199 | static const struct attribute_group rsrc_attributes = { |
1200 | .attrs = pccard_rsrc_attributes, | |
1201 | }; | |
1202 | ||
87373318 | 1203 | static int __devinit pccard_sysfs_add_rsrc(struct device *dev, |
d8539d81 | 1204 | struct class_interface *class_intf) |
1da177e4 | 1205 | { |
87373318 | 1206 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
7d578961 | 1207 | |
1da177e4 LT |
1208 | if (s->resource_ops != &pccard_nonstatic_ops) |
1209 | return 0; | |
7d578961 | 1210 | return sysfs_create_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1211 | } |
1212 | ||
87373318 | 1213 | static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, |
d8539d81 | 1214 | struct class_interface *class_intf) |
1da177e4 | 1215 | { |
87373318 | 1216 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1217 | |
1218 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1219 | return; | |
7d578961 | 1220 | sysfs_remove_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1221 | } |
1222 | ||
ed49f5d0 | 1223 | static struct class_interface pccard_rsrc_interface __refdata = { |
1da177e4 | 1224 | .class = &pcmcia_socket_class, |
87373318 GKH |
1225 | .add_dev = &pccard_sysfs_add_rsrc, |
1226 | .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), | |
1da177e4 LT |
1227 | }; |
1228 | ||
1229 | static int __init nonstatic_sysfs_init(void) | |
1230 | { | |
1231 | return class_interface_register(&pccard_rsrc_interface); | |
1232 | } | |
1233 | ||
1234 | static void __exit nonstatic_sysfs_exit(void) | |
1235 | { | |
1236 | class_interface_unregister(&pccard_rsrc_interface); | |
1237 | } | |
1238 | ||
1239 | module_init(nonstatic_sysfs_init); | |
1240 | module_exit(nonstatic_sysfs_exit); |