Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * rsrc_nonstatic.c -- Resource management routines for !SS_CAP_STATIC_MAP sockets | |
4 | * | |
1da177e4 LT |
5 | * The initial developer of the original code is David A. Hinds |
6 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
7 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
8 | * | |
9 | * (C) 1999 David A. Hinds | |
10 | */ | |
11 | ||
1da177e4 LT |
12 | #include <linux/module.h> |
13 | #include <linux/moduleparam.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/types.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/ioport.h> | |
21 | #include <linux/timer.h> | |
22 | #include <linux/pci.h> | |
23 | #include <linux/device.h> | |
9fea84f4 | 24 | #include <linux/io.h> |
1da177e4 LT |
25 | |
26 | #include <asm/irq.h> | |
1da177e4 | 27 | |
1da177e4 | 28 | #include <pcmcia/ss.h> |
1da177e4 LT |
29 | #include <pcmcia/cistpl.h> |
30 | #include "cs_internal.h" | |
31 | ||
49b1153a | 32 | /* moved to rsrc_mgr.c |
1da177e4 LT |
33 | MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); |
34 | MODULE_LICENSE("GPL"); | |
49b1153a | 35 | */ |
1da177e4 LT |
36 | |
37 | /* Parameters that can be set with 'insmod' */ | |
38 | ||
39 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) | |
40 | ||
41 | INT_MODULE_PARM(probe_mem, 1); /* memory probe? */ | |
42 | #ifdef CONFIG_PCMCIA_PROBE | |
43 | INT_MODULE_PARM(probe_io, 1); /* IO port probe? */ | |
44 | INT_MODULE_PARM(mem_limit, 0x10000); | |
45 | #endif | |
46 | ||
47 | /* for io_db and mem_db */ | |
48 | struct resource_map { | |
49 | u_long base, num; | |
50 | struct resource_map *next; | |
51 | }; | |
52 | ||
53 | struct socket_data { | |
54 | struct resource_map mem_db; | |
7b4884ca | 55 | struct resource_map mem_db_valid; |
1da177e4 | 56 | struct resource_map io_db; |
1da177e4 LT |
57 | }; |
58 | ||
1da177e4 LT |
59 | #define MEM_PROBE_LOW (1 << 0) |
60 | #define MEM_PROBE_HIGH (1 << 1) | |
61 | ||
3dace8cf DB |
62 | /* Action field */ |
63 | #define REMOVE_MANAGED_RESOURCE 1 | |
64 | #define ADD_MANAGED_RESOURCE 2 | |
1da177e4 LT |
65 | |
66 | /*====================================================================== | |
67 | ||
68 | Linux resource management extensions | |
69 | ||
70 | ======================================================================*/ | |
71 | ||
1da177e4 | 72 | static struct resource * |
2427ddd8 GKH |
73 | claim_region(struct pcmcia_socket *s, resource_size_t base, |
74 | resource_size_t size, int type, char *name) | |
1da177e4 LT |
75 | { |
76 | struct resource *res, *parent; | |
77 | ||
78 | parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; | |
49b1153a | 79 | res = pcmcia_make_resource(base, size, type | IORESOURCE_BUSY, name); |
1da177e4 LT |
80 | |
81 | if (res) { | |
82 | #ifdef CONFIG_PCI | |
83 | if (s && s->cb_dev) | |
84 | parent = pci_find_parent_resource(s->cb_dev, res); | |
85 | #endif | |
86 | if (!parent || request_resource(parent, res)) { | |
87 | kfree(res); | |
88 | res = NULL; | |
89 | } | |
90 | } | |
91 | return res; | |
92 | } | |
93 | ||
94 | static void free_region(struct resource *res) | |
95 | { | |
96 | if (res) { | |
97 | release_resource(res); | |
98 | kfree(res); | |
99 | } | |
100 | } | |
101 | ||
102 | /*====================================================================== | |
103 | ||
104 | These manage the internal databases of available resources. | |
105 | ||
106 | ======================================================================*/ | |
107 | ||
108 | static int add_interval(struct resource_map *map, u_long base, u_long num) | |
109 | { | |
1168386a | 110 | struct resource_map *p, *q; |
1da177e4 | 111 | |
1168386a | 112 | for (p = map; ; p = p->next) { |
f309cb3e DB |
113 | if ((p != map) && (p->base+p->num >= base)) { |
114 | p->num = max(num + base - p->base, p->num); | |
115 | return 0; | |
116 | } | |
1168386a DB |
117 | if ((p->next == map) || (p->next->base > base+num-1)) |
118 | break; | |
119 | } | |
120 | q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); | |
121 | if (!q) { | |
122 | printk(KERN_WARNING "out of memory to update resources\n"); | |
123 | return -ENOMEM; | |
124 | } | |
125 | q->base = base; q->num = num; | |
126 | q->next = p->next; p->next = q; | |
127 | return 0; | |
1da177e4 LT |
128 | } |
129 | ||
130 | /*====================================================================*/ | |
131 | ||
132 | static int sub_interval(struct resource_map *map, u_long base, u_long num) | |
133 | { | |
9fea84f4 DB |
134 | struct resource_map *p, *q; |
135 | ||
136 | for (p = map; ; p = q) { | |
137 | q = p->next; | |
138 | if (q == map) | |
139 | break; | |
140 | if ((q->base+q->num > base) && (base+num > q->base)) { | |
141 | if (q->base >= base) { | |
142 | if (q->base+q->num <= base+num) { | |
143 | /* Delete whole block */ | |
144 | p->next = q->next; | |
145 | kfree(q); | |
146 | /* don't advance the pointer yet */ | |
147 | q = p; | |
148 | } else { | |
149 | /* Cut off bit from the front */ | |
150 | q->num = q->base + q->num - base - num; | |
151 | q->base = base + num; | |
152 | } | |
153 | } else if (q->base+q->num <= base+num) { | |
154 | /* Cut off bit from the end */ | |
155 | q->num = base - q->base; | |
156 | } else { | |
157 | /* Split the block into two pieces */ | |
158 | p = kmalloc(sizeof(struct resource_map), | |
159 | GFP_KERNEL); | |
160 | if (!p) { | |
161 | printk(KERN_WARNING "out of memory to update resources\n"); | |
162 | return -ENOMEM; | |
163 | } | |
164 | p->base = base+num; | |
165 | p->num = q->base+q->num - p->base; | |
166 | q->num = base - q->base; | |
167 | p->next = q->next ; q->next = p; | |
168 | } | |
1168386a | 169 | } |
9fea84f4 DB |
170 | } |
171 | return 0; | |
1da177e4 LT |
172 | } |
173 | ||
174 | /*====================================================================== | |
175 | ||
176 | These routines examine a region of IO or memory addresses to | |
177 | determine what ranges might be genuinely available. | |
178 | ||
179 | ======================================================================*/ | |
180 | ||
181 | #ifdef CONFIG_PCMCIA_PROBE | |
906da809 OJ |
182 | static void do_io_probe(struct pcmcia_socket *s, unsigned int base, |
183 | unsigned int num) | |
1da177e4 | 184 | { |
9fea84f4 DB |
185 | struct resource *res; |
186 | struct socket_data *s_data = s->resource_data; | |
187 | unsigned int i, j, bad; | |
188 | int any; | |
189 | u_char *b, hole, most; | |
190 | ||
f2e6cf76 | 191 | dev_info(&s->dev, "cs: IO port probe %#x-%#x:", base, base+num-1); |
9fea84f4 DB |
192 | |
193 | /* First, what does a floating port look like? */ | |
194 | b = kzalloc(256, GFP_KERNEL); | |
195 | if (!b) { | |
f2e6cf76 JP |
196 | pr_cont("\n"); |
197 | dev_err(&s->dev, "do_io_probe: unable to kmalloc 256 bytes\n"); | |
9fea84f4 DB |
198 | return; |
199 | } | |
200 | for (i = base, most = 0; i < base+num; i += 8) { | |
509b0865 | 201 | res = claim_region(s, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); |
9fea84f4 DB |
202 | if (!res) |
203 | continue; | |
204 | hole = inb(i); | |
205 | for (j = 1; j < 8; j++) | |
206 | if (inb(i+j) != hole) | |
207 | break; | |
208 | free_region(res); | |
209 | if ((j == 8) && (++b[hole] > b[most])) | |
210 | most = hole; | |
211 | if (b[most] == 127) | |
212 | break; | |
213 | } | |
214 | kfree(b); | |
215 | ||
216 | bad = any = 0; | |
217 | for (i = base; i < base+num; i += 8) { | |
509b0865 DB |
218 | res = claim_region(s, i, 8, IORESOURCE_IO, "PCMCIA ioprobe"); |
219 | if (!res) { | |
220 | if (!any) | |
f2e6cf76 | 221 | pr_cont(" excluding"); |
509b0865 DB |
222 | if (!bad) |
223 | bad = any = i; | |
9fea84f4 | 224 | continue; |
509b0865 | 225 | } |
9fea84f4 DB |
226 | for (j = 0; j < 8; j++) |
227 | if (inb(i+j) != most) | |
228 | break; | |
229 | free_region(res); | |
230 | if (j < 8) { | |
231 | if (!any) | |
f2e6cf76 | 232 | pr_cont(" excluding"); |
9fea84f4 DB |
233 | if (!bad) |
234 | bad = any = i; | |
235 | } else { | |
236 | if (bad) { | |
237 | sub_interval(&s_data->io_db, bad, i-bad); | |
f2e6cf76 | 238 | pr_cont(" %#x-%#x", bad, i-1); |
9fea84f4 DB |
239 | bad = 0; |
240 | } | |
241 | } | |
242 | } | |
243 | if (bad) { | |
244 | if ((num > 16) && (bad == base) && (i == base+num)) { | |
509b0865 | 245 | sub_interval(&s_data->io_db, bad, i-bad); |
f2e6cf76 | 246 | pr_cont(" nothing: probe failed.\n"); |
9fea84f4 DB |
247 | return; |
248 | } else { | |
249 | sub_interval(&s_data->io_db, bad, i-bad); | |
f2e6cf76 | 250 | pr_cont(" %#x-%#x", bad, i-1); |
9fea84f4 DB |
251 | } |
252 | } | |
253 | ||
f2e6cf76 | 254 | pr_cont("%s\n", !any ? " clean" : ""); |
1da177e4 LT |
255 | } |
256 | #endif | |
257 | ||
3f32b3c0 | 258 | /*======================================================================*/ |
1da177e4 | 259 | |
f20a7596 | 260 | /* |
3f32b3c0 DB |
261 | * readable() - iomem validation function for cards with a valid CIS |
262 | */ | |
c5081d5f DB |
263 | static int readable(struct pcmcia_socket *s, struct resource *res, |
264 | unsigned int *count) | |
1da177e4 | 265 | { |
3f32b3c0 | 266 | int ret = -EINVAL; |
1da177e4 | 267 | |
7ab24855 DB |
268 | if (s->fake_cis) { |
269 | dev_dbg(&s->dev, "fake CIS is being used: can't validate mem\n"); | |
270 | return 0; | |
271 | } | |
1da177e4 LT |
272 | |
273 | s->cis_mem.res = res; | |
274 | s->cis_virt = ioremap(res->start, s->map_size); | |
275 | if (s->cis_virt) { | |
6b8e087b | 276 | mutex_unlock(&s->ops_mutex); |
6e7b51a7 DB |
277 | /* as we're only called from pcmcia.c, we're safe */ |
278 | if (s->callback->validate) | |
279 | ret = s->callback->validate(s, count); | |
904e3777 | 280 | /* invalidate mapping */ |
6b8e087b | 281 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
282 | iounmap(s->cis_virt); |
283 | s->cis_virt = NULL; | |
1da177e4 LT |
284 | } |
285 | s->cis_mem.res = NULL; | |
3f32b3c0 DB |
286 | if ((ret) || (*count == 0)) |
287 | return -EINVAL; | |
288 | return 0; | |
1da177e4 LT |
289 | } |
290 | ||
f20a7596 | 291 | /* |
3f32b3c0 DB |
292 | * checksum() - iomem validation function for simple memory cards |
293 | */ | |
294 | static int checksum(struct pcmcia_socket *s, struct resource *res, | |
295 | unsigned int *value) | |
1da177e4 LT |
296 | { |
297 | pccard_mem_map map; | |
298 | int i, a = 0, b = -1, d; | |
299 | void __iomem *virt; | |
300 | ||
301 | virt = ioremap(res->start, s->map_size); | |
302 | if (virt) { | |
303 | map.map = 0; | |
304 | map.flags = MAP_ACTIVE; | |
305 | map.speed = 0; | |
306 | map.res = res; | |
307 | map.card_start = 0; | |
308 | s->ops->set_mem_map(s, &map); | |
309 | ||
310 | /* Don't bother checking every word... */ | |
311 | for (i = 0; i < s->map_size; i += 44) { | |
312 | d = readl(virt+i); | |
313 | a += d; | |
314 | b &= d; | |
315 | } | |
316 | ||
317 | map.flags = 0; | |
318 | s->ops->set_mem_map(s, &map); | |
319 | ||
320 | iounmap(virt); | |
321 | } | |
322 | ||
3f32b3c0 DB |
323 | if (b == -1) |
324 | return -EINVAL; | |
1da177e4 | 325 | |
3f32b3c0 | 326 | *value = a; |
1da177e4 | 327 | |
3f32b3c0 | 328 | return 0; |
1da177e4 LT |
329 | } |
330 | ||
3f32b3c0 DB |
331 | /** |
332 | * do_validate_mem() - low level validate a memory region for PCMCIA use | |
333 | * @s: PCMCIA socket to validate | |
334 | * @base: start address of resource to check | |
335 | * @size: size of resource to check | |
336 | * @validate: validation function to use | |
337 | * | |
338 | * do_validate_mem() splits up the memory region which is to be checked | |
339 | * into two parts. Both are passed to the @validate() function. If | |
340 | * @validate() returns non-zero, or the value parameter to @validate() | |
341 | * is zero, or the value parameter is different between both calls, | |
342 | * the check fails, and -EINVAL is returned. Else, 0 is returned. | |
343 | */ | |
344 | static int do_validate_mem(struct pcmcia_socket *s, | |
345 | unsigned long base, unsigned long size, | |
e9d503fe LJ |
346 | int (*validate)(struct pcmcia_socket *s, |
347 | struct resource *res, | |
348 | unsigned int *value)) | |
1da177e4 | 349 | { |
7b4884ca | 350 | struct socket_data *s_data = s->resource_data; |
1da177e4 | 351 | struct resource *res1, *res2; |
3f32b3c0 DB |
352 | unsigned int info1 = 1, info2 = 1; |
353 | int ret = -EINVAL; | |
1da177e4 | 354 | |
9fea84f4 DB |
355 | res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe"); |
356 | res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, | |
357 | "PCMCIA memprobe"); | |
1da177e4 LT |
358 | |
359 | if (res1 && res2) { | |
3f32b3c0 DB |
360 | ret = 0; |
361 | if (validate) { | |
362 | ret = validate(s, res1, &info1); | |
363 | ret += validate(s, res2, &info2); | |
364 | } | |
1da177e4 LT |
365 | } |
366 | ||
3490a69b | 367 | dev_dbg(&s->dev, "cs: memory probe 0x%06lx-0x%06lx: %pr %pr %u %u %u", |
3f32b3c0 | 368 | base, base+size-1, res1, res2, ret, info1, info2); |
1da177e4 | 369 | |
bec0b2ce JJ |
370 | free_region(res2); |
371 | free_region(res1); | |
372 | ||
3f32b3c0 DB |
373 | if ((ret) || (info1 != info2) || (info1 == 0)) |
374 | return -EINVAL; | |
1da177e4 | 375 | |
7b4884ca DB |
376 | if (validate && !s->fake_cis) { |
377 | /* move it to the validated data set */ | |
378 | add_interval(&s_data->mem_db_valid, base, size); | |
379 | sub_interval(&s_data->mem_db, base, size); | |
1da177e4 LT |
380 | } |
381 | ||
3f32b3c0 | 382 | return 0; |
1da177e4 LT |
383 | } |
384 | ||
1da177e4 | 385 | |
3f32b3c0 DB |
386 | /** |
387 | * do_mem_probe() - validate a memory region for PCMCIA use | |
388 | * @s: PCMCIA socket to validate | |
389 | * @base: start address of resource to check | |
390 | * @num: size of resource to check | |
391 | * @validate: validation function to use | |
392 | * @fallback: validation function to use if validate fails | |
393 | * | |
394 | * do_mem_probe() checks a memory region for use by the PCMCIA subsystem. | |
395 | * To do so, the area is split up into sensible parts, and then passed | |
396 | * into the @validate() function. Only if @validate() and @fallback() fail, | |
397 | * the area is marked as unavaibale for use by the PCMCIA subsystem. The | |
398 | * function returns the size of the usable memory area. | |
399 | */ | |
400 | static int do_mem_probe(struct pcmcia_socket *s, u_long base, u_long num, | |
e9d503fe LJ |
401 | int (*validate)(struct pcmcia_socket *s, |
402 | struct resource *res, | |
403 | unsigned int *value), | |
404 | int (*fallback)(struct pcmcia_socket *s, | |
405 | struct resource *res, | |
406 | unsigned int *value)) | |
1da177e4 | 407 | { |
9fea84f4 DB |
408 | struct socket_data *s_data = s->resource_data; |
409 | u_long i, j, bad, fail, step; | |
410 | ||
f2e6cf76 JP |
411 | dev_info(&s->dev, "cs: memory probe 0x%06lx-0x%06lx:", |
412 | base, base+num-1); | |
9fea84f4 DB |
413 | bad = fail = 0; |
414 | step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); | |
415 | /* don't allow too large steps */ | |
416 | if (step > 0x800000) | |
417 | step = 0x800000; | |
418 | /* cis_readable wants to map 2x map_size */ | |
419 | if (step < 2 * s->map_size) | |
420 | step = 2 * s->map_size; | |
421 | for (i = j = base; i < base+num; i = j + step) { | |
422 | if (!fail) { | |
423 | for (j = i; j < base+num; j += step) { | |
3f32b3c0 | 424 | if (!do_validate_mem(s, j, step, validate)) |
9fea84f4 DB |
425 | break; |
426 | } | |
427 | fail = ((i == base) && (j == base+num)); | |
428 | } | |
3f32b3c0 DB |
429 | if ((fail) && (fallback)) { |
430 | for (j = i; j < base+num; j += step) | |
431 | if (!do_validate_mem(s, j, step, fallback)) | |
9fea84f4 DB |
432 | break; |
433 | } | |
434 | if (i != j) { | |
435 | if (!bad) | |
f2e6cf76 JP |
436 | pr_cont(" excluding"); |
437 | pr_cont(" %#05lx-%#05lx", i, j-1); | |
9fea84f4 DB |
438 | sub_interval(&s_data->mem_db, i, j-i); |
439 | bad += j-i; | |
440 | } | |
441 | } | |
f2e6cf76 | 442 | pr_cont("%s\n", !bad ? " clean" : ""); |
9fea84f4 | 443 | return num - bad; |
1da177e4 LT |
444 | } |
445 | ||
3f32b3c0 | 446 | |
1da177e4 LT |
447 | #ifdef CONFIG_PCMCIA_PROBE |
448 | ||
3f32b3c0 DB |
449 | /** |
450 | * inv_probe() - top-to-bottom search for one usuable high memory area | |
451 | * @s: PCMCIA socket to validate | |
452 | * @m: resource_map to check | |
453 | */ | |
1da177e4 LT |
454 | static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) |
455 | { | |
de75914e DB |
456 | struct socket_data *s_data = s->resource_data; |
457 | u_long ok; | |
458 | if (m == &s_data->mem_db) | |
459 | return 0; | |
460 | ok = inv_probe(m->next, s); | |
461 | if (ok) { | |
462 | if (m->base >= 0x100000) | |
463 | sub_interval(&s_data->mem_db, m->base, m->num); | |
464 | return ok; | |
465 | } | |
466 | if (m->base < 0x100000) | |
467 | return 0; | |
3f32b3c0 | 468 | return do_mem_probe(s, m->base, m->num, readable, checksum); |
1da177e4 LT |
469 | } |
470 | ||
3f32b3c0 DB |
471 | /** |
472 | * validate_mem() - memory probe function | |
473 | * @s: PCMCIA socket to validate | |
474 | * @probe_mask: MEM_PROBE_LOW | MEM_PROBE_HIGH | |
475 | * | |
476 | * The memory probe. If the memory list includes a 64K-aligned block | |
477 | * below 1MB, we probe in 64K chunks, and as soon as we accumulate at | |
478 | * least mem_limit free space, we quit. Returns 0 on usuable ports. | |
479 | */ | |
de75914e | 480 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 | 481 | { |
de75914e DB |
482 | struct resource_map *m, mm; |
483 | static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; | |
484 | unsigned long b, i, ok = 0; | |
485 | struct socket_data *s_data = s->resource_data; | |
1da177e4 | 486 | |
de75914e DB |
487 | /* We do up to four passes through the list */ |
488 | if (probe_mask & MEM_PROBE_HIGH) { | |
489 | if (inv_probe(s_data->mem_db.next, s) > 0) | |
490 | return 0; | |
7b4884ca DB |
491 | if (s_data->mem_db_valid.next != &s_data->mem_db_valid) |
492 | return 0; | |
f2e6cf76 | 493 | dev_notice(&s->dev, |
dbe4ea5f | 494 | "cs: warning: no high memory space available!\n"); |
de75914e | 495 | return -ENODEV; |
1da177e4 | 496 | } |
de75914e DB |
497 | |
498 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
499 | mm = *m; | |
500 | /* Only probe < 1 MB */ | |
501 | if (mm.base >= 0x100000) | |
502 | continue; | |
503 | if ((mm.base | mm.num) & 0xffff) { | |
3f32b3c0 DB |
504 | ok += do_mem_probe(s, mm.base, mm.num, readable, |
505 | checksum); | |
de75914e DB |
506 | continue; |
507 | } | |
508 | /* Special probe for 64K-aligned block */ | |
509 | for (i = 0; i < 4; i++) { | |
510 | b = order[i] << 12; | |
511 | if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { | |
512 | if (ok >= mem_limit) | |
513 | sub_interval(&s_data->mem_db, b, 0x10000); | |
514 | else | |
3f32b3c0 DB |
515 | ok += do_mem_probe(s, b, 0x10000, |
516 | readable, checksum); | |
de75914e DB |
517 | } |
518 | } | |
1da177e4 | 519 | } |
de75914e DB |
520 | |
521 | if (ok > 0) | |
522 | return 0; | |
523 | ||
524 | return -ENODEV; | |
1da177e4 LT |
525 | } |
526 | ||
527 | #else /* CONFIG_PCMCIA_PROBE */ | |
528 | ||
3f32b3c0 DB |
529 | /** |
530 | * validate_mem() - memory probe function | |
531 | * @s: PCMCIA socket to validate | |
532 | * @probe_mask: ignored | |
533 | * | |
534 | * Returns 0 on usuable ports. | |
535 | */ | |
2cff9447 | 536 | static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) |
1da177e4 LT |
537 | { |
538 | struct resource_map *m, mm; | |
539 | struct socket_data *s_data = s->resource_data; | |
2cff9447 | 540 | unsigned long ok = 0; |
1da177e4 LT |
541 | |
542 | for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { | |
543 | mm = *m; | |
3f32b3c0 | 544 | ok += do_mem_probe(s, mm.base, mm.num, readable, checksum); |
1da177e4 | 545 | } |
2cff9447 AM |
546 | if (ok > 0) |
547 | return 0; | |
548 | return -ENODEV; | |
1da177e4 LT |
549 | } |
550 | ||
551 | #endif /* CONFIG_PCMCIA_PROBE */ | |
552 | ||
553 | ||
3f32b3c0 DB |
554 | /** |
555 | * pcmcia_nonstatic_validate_mem() - try to validate iomem for PCMCIA use | |
556 | * @s: PCMCIA socket to validate | |
557 | * | |
558 | * This is tricky... when we set up CIS memory, we try to validate | |
559 | * the memory window space allocations. | |
560 | * | |
7fe908dd | 561 | * Locking note: Must be called with skt_mutex held! |
1da177e4 | 562 | */ |
de75914e | 563 | static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
564 | { |
565 | struct socket_data *s_data = s->resource_data; | |
de75914e | 566 | unsigned int probe_mask = MEM_PROBE_LOW; |
7b4884ca | 567 | int ret; |
de75914e | 568 | |
7b4884ca | 569 | if (!probe_mem || !(s->state & SOCKET_PRESENT)) |
de75914e | 570 | return 0; |
1da177e4 | 571 | |
de75914e DB |
572 | if (s->features & SS_CAP_PAGE_REGS) |
573 | probe_mask = MEM_PROBE_HIGH; | |
1da177e4 | 574 | |
7b4884ca | 575 | ret = validate_mem(s, probe_mask); |
1da177e4 | 576 | |
7b4884ca DB |
577 | if (s_data->mem_db_valid.next != &s_data->mem_db_valid) |
578 | return 0; | |
1da177e4 | 579 | |
de75914e | 580 | return ret; |
1da177e4 LT |
581 | } |
582 | ||
583 | struct pcmcia_align_data { | |
584 | unsigned long mask; | |
585 | unsigned long offset; | |
586 | struct resource_map *map; | |
587 | }; | |
588 | ||
147a2746 DB |
589 | static resource_size_t pcmcia_common_align(struct pcmcia_align_data *align_data, |
590 | resource_size_t start) | |
1da177e4 | 591 | { |
147a2746 | 592 | resource_size_t ret; |
1da177e4 LT |
593 | /* |
594 | * Ensure that we have the correct start address | |
595 | */ | |
147a2746 DB |
596 | ret = (start & ~align_data->mask) + align_data->offset; |
597 | if (ret < start) | |
598 | ret += align_data->mask + 1; | |
599 | return ret; | |
1da177e4 LT |
600 | } |
601 | ||
b26b2d49 | 602 | static resource_size_t |
3b7a17fc DB |
603 | pcmcia_align(void *align_data, const struct resource *res, |
604 | resource_size_t size, resource_size_t align) | |
1da177e4 LT |
605 | { |
606 | struct pcmcia_align_data *data = align_data; | |
607 | struct resource_map *m; | |
b26b2d49 | 608 | resource_size_t start; |
1da177e4 | 609 | |
147a2746 | 610 | start = pcmcia_common_align(data, res->start); |
1da177e4 LT |
611 | |
612 | for (m = data->map->next; m != data->map; m = m->next) { | |
147a2746 DB |
613 | unsigned long map_start = m->base; |
614 | unsigned long map_end = m->base + m->num - 1; | |
1da177e4 LT |
615 | |
616 | /* | |
617 | * If the lower resources are not available, try aligning | |
618 | * to this entry of the resource database to see if it'll | |
619 | * fit here. | |
620 | */ | |
147a2746 DB |
621 | if (start < map_start) |
622 | start = pcmcia_common_align(data, map_start); | |
1da177e4 LT |
623 | |
624 | /* | |
625 | * If we're above the area which was passed in, there's | |
626 | * no point proceeding. | |
627 | */ | |
147a2746 | 628 | if (start >= res->end) |
1da177e4 LT |
629 | break; |
630 | ||
147a2746 | 631 | if ((start + size - 1) <= map_end) |
1da177e4 LT |
632 | break; |
633 | } | |
634 | ||
635 | /* | |
636 | * If we failed to find something suitable, ensure we fail. | |
637 | */ | |
638 | if (m == data->map) | |
b26b2d49 DB |
639 | start = res->end; |
640 | ||
641 | return start; | |
1da177e4 LT |
642 | } |
643 | ||
644 | /* | |
645 | * Adjust an existing IO region allocation, but making sure that we don't | |
646 | * encroach outside the resources which the user supplied. | |
647 | */ | |
b19a7275 DB |
648 | static int __nonstatic_adjust_io_region(struct pcmcia_socket *s, |
649 | unsigned long r_start, | |
650 | unsigned long r_end) | |
1da177e4 LT |
651 | { |
652 | struct resource_map *m; | |
653 | struct socket_data *s_data = s->resource_data; | |
654 | int ret = -ENOMEM; | |
655 | ||
1da177e4 LT |
656 | for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { |
657 | unsigned long start = m->base; | |
658 | unsigned long end = m->base + m->num - 1; | |
659 | ||
660 | if (start > r_start || r_end > end) | |
661 | continue; | |
662 | ||
b19a7275 | 663 | ret = 0; |
1da177e4 | 664 | } |
1da177e4 LT |
665 | |
666 | return ret; | |
667 | } | |
668 | ||
669 | /*====================================================================== | |
670 | ||
671 | These find ranges of I/O ports or memory addresses that are not | |
672 | currently allocated by other devices. | |
673 | ||
674 | The 'align' field should reflect the number of bits of address | |
675 | that need to be preserved from the initial value of *base. It | |
676 | should be a power of two, greater than or equal to 'num'. A value | |
677 | of 0 means that all bits of *base are significant. *base should | |
678 | also be strictly less than 'align'. | |
679 | ||
680 | ======================================================================*/ | |
681 | ||
b19a7275 DB |
682 | static struct resource *__nonstatic_find_io_region(struct pcmcia_socket *s, |
683 | unsigned long base, int num, | |
684 | unsigned long align) | |
1da177e4 | 685 | { |
49b1153a DB |
686 | struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_IO, |
687 | dev_name(&s->dev)); | |
1da177e4 LT |
688 | struct socket_data *s_data = s->resource_data; |
689 | struct pcmcia_align_data data; | |
690 | unsigned long min = base; | |
691 | int ret; | |
692 | ||
1da177e4 LT |
693 | data.mask = align - 1; |
694 | data.offset = base & data.mask; | |
695 | data.map = &s_data->io_db; | |
696 | ||
1da177e4 LT |
697 | #ifdef CONFIG_PCI |
698 | if (s->cb_dev) { | |
699 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
700 | min, 0, pcmcia_align, &data); | |
701 | } else | |
702 | #endif | |
703 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
704 | 1, pcmcia_align, &data); | |
1da177e4 LT |
705 | |
706 | if (ret != 0) { | |
707 | kfree(res); | |
708 | res = NULL; | |
709 | } | |
710 | return res; | |
711 | } | |
712 | ||
b19a7275 DB |
713 | static int nonstatic_find_io(struct pcmcia_socket *s, unsigned int attr, |
714 | unsigned int *base, unsigned int num, | |
ad0c7be2 | 715 | unsigned int align, struct resource **parent) |
b19a7275 DB |
716 | { |
717 | int i, ret = 0; | |
718 | ||
719 | /* Check for an already-allocated window that must conflict with | |
720 | * what was asked for. It is a hack because it does not catch all | |
721 | * potential conflicts, just the most obvious ones. | |
722 | */ | |
723 | for (i = 0; i < MAX_IO_WIN; i++) { | |
724 | if (!s->io[i].res) | |
725 | continue; | |
726 | ||
727 | if (!*base) | |
728 | continue; | |
729 | ||
730 | if ((s->io[i].res->start & (align-1)) == *base) | |
731 | return -EBUSY; | |
732 | } | |
733 | ||
734 | for (i = 0; i < MAX_IO_WIN; i++) { | |
735 | struct resource *res = s->io[i].res; | |
736 | unsigned int try; | |
737 | ||
738 | if (res && (res->flags & IORESOURCE_BITS) != | |
739 | (attr & IORESOURCE_BITS)) | |
740 | continue; | |
741 | ||
742 | if (!res) { | |
743 | if (align == 0) | |
744 | align = 0x10000; | |
745 | ||
746 | res = s->io[i].res = __nonstatic_find_io_region(s, | |
747 | *base, num, | |
748 | align); | |
749 | if (!res) | |
750 | return -EINVAL; | |
751 | ||
752 | *base = res->start; | |
753 | s->io[i].res->flags = | |
754 | ((res->flags & ~IORESOURCE_BITS) | | |
755 | (attr & IORESOURCE_BITS)); | |
756 | s->io[i].InUse = num; | |
ad0c7be2 | 757 | *parent = res; |
b19a7275 DB |
758 | return 0; |
759 | } | |
760 | ||
761 | /* Try to extend top of window */ | |
762 | try = res->end + 1; | |
763 | if ((*base == 0) || (*base == try)) { | |
764 | ret = __nonstatic_adjust_io_region(s, res->start, | |
765 | res->end + num); | |
766 | if (!ret) { | |
767 | ret = adjust_resource(s->io[i].res, res->start, | |
28f65c11 | 768 | resource_size(res) + num); |
b19a7275 DB |
769 | if (ret) |
770 | continue; | |
771 | *base = try; | |
772 | s->io[i].InUse += num; | |
ad0c7be2 | 773 | *parent = res; |
b19a7275 DB |
774 | return 0; |
775 | } | |
776 | } | |
777 | ||
778 | /* Try to extend bottom of window */ | |
779 | try = res->start - num; | |
780 | if ((*base == 0) || (*base == try)) { | |
781 | ret = __nonstatic_adjust_io_region(s, | |
782 | res->start - num, | |
783 | res->end); | |
784 | if (!ret) { | |
785 | ret = adjust_resource(s->io[i].res, | |
28f65c11 JP |
786 | res->start - num, |
787 | resource_size(res) + num); | |
b19a7275 DB |
788 | if (ret) |
789 | continue; | |
790 | *base = try; | |
791 | s->io[i].InUse += num; | |
ad0c7be2 | 792 | *parent = res; |
b19a7275 DB |
793 | return 0; |
794 | } | |
795 | } | |
796 | } | |
797 | ||
798 | return -EINVAL; | |
799 | } | |
800 | ||
801 | ||
9fea84f4 | 802 | static struct resource *nonstatic_find_mem_region(u_long base, u_long num, |
e94e15f7 | 803 | u_long align, int low, struct pcmcia_socket *s) |
1da177e4 | 804 | { |
49b1153a DB |
805 | struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_MEM, |
806 | dev_name(&s->dev)); | |
1da177e4 LT |
807 | struct socket_data *s_data = s->resource_data; |
808 | struct pcmcia_align_data data; | |
809 | unsigned long min, max; | |
7b4884ca | 810 | int ret, i, j; |
1da177e4 LT |
811 | |
812 | low = low || !(s->features & SS_CAP_PAGE_REGS); | |
813 | ||
814 | data.mask = align - 1; | |
815 | data.offset = base & data.mask; | |
1da177e4 LT |
816 | |
817 | for (i = 0; i < 2; i++) { | |
7b4884ca | 818 | data.map = &s_data->mem_db_valid; |
1da177e4 LT |
819 | if (low) { |
820 | max = 0x100000UL; | |
821 | min = base < max ? base : 0; | |
822 | } else { | |
823 | max = ~0UL; | |
824 | min = 0x100000UL + base; | |
825 | } | |
826 | ||
7b4884ca | 827 | for (j = 0; j < 2; j++) { |
1da177e4 | 828 | #ifdef CONFIG_PCI |
7b4884ca DB |
829 | if (s->cb_dev) { |
830 | ret = pci_bus_alloc_resource(s->cb_dev->bus, | |
831 | res, num, 1, min, 0, | |
832 | pcmcia_align, &data); | |
833 | } else | |
1da177e4 | 834 | #endif |
7b4884ca DB |
835 | { |
836 | ret = allocate_resource(&iomem_resource, | |
837 | res, num, min, max, 1, | |
838 | pcmcia_align, &data); | |
839 | } | |
840 | if (ret == 0) | |
841 | break; | |
842 | data.map = &s_data->mem_db; | |
843 | } | |
1da177e4 LT |
844 | if (ret == 0 || low) |
845 | break; | |
846 | low = 1; | |
847 | } | |
848 | ||
849 | if (ret != 0) { | |
850 | kfree(res); | |
851 | res = NULL; | |
852 | } | |
853 | return res; | |
854 | } | |
855 | ||
856 | ||
22916638 | 857 | static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 | 858 | { |
1da177e4 | 859 | struct socket_data *data = s->resource_data; |
22916638 DB |
860 | unsigned long size = end - start + 1; |
861 | int ret = 0; | |
1da177e4 | 862 | |
1146bc74 | 863 | if (end < start) |
22916638 | 864 | return -EINVAL; |
1da177e4 | 865 | |
22916638 | 866 | switch (action) { |
1da177e4 | 867 | case ADD_MANAGED_RESOURCE: |
22916638 | 868 | ret = add_interval(&data->mem_db, start, size); |
3f32b3c0 DB |
869 | if (!ret) |
870 | do_mem_probe(s, start, size, NULL, NULL); | |
1da177e4 LT |
871 | break; |
872 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 873 | ret = sub_interval(&data->mem_db, start, size); |
1da177e4 LT |
874 | break; |
875 | default: | |
22916638 | 876 | ret = -EINVAL; |
1da177e4 | 877 | } |
1da177e4 LT |
878 | |
879 | return ret; | |
880 | } | |
881 | ||
882 | ||
22916638 | 883 | static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) |
1da177e4 LT |
884 | { |
885 | struct socket_data *data = s->resource_data; | |
41b97ab5 | 886 | unsigned long size; |
22916638 | 887 | int ret = 0; |
1da177e4 | 888 | |
9713ab28 DB |
889 | #if defined(CONFIG_X86) |
890 | /* on x86, avoid anything < 0x100 for it is often used for | |
891 | * legacy platform devices */ | |
892 | if (start < 0x100) | |
893 | start = 0x100; | |
894 | #endif | |
895 | ||
41b97ab5 DB |
896 | size = end - start + 1; |
897 | ||
1146bc74 | 898 | if (end < start) |
22916638 DB |
899 | return -EINVAL; |
900 | ||
901 | if (end > IO_SPACE_LIMIT) | |
902 | return -EINVAL; | |
1da177e4 | 903 | |
22916638 | 904 | switch (action) { |
1da177e4 | 905 | case ADD_MANAGED_RESOURCE: |
22916638 DB |
906 | if (add_interval(&data->io_db, start, size) != 0) { |
907 | ret = -EBUSY; | |
1da177e4 LT |
908 | break; |
909 | } | |
910 | #ifdef CONFIG_PCMCIA_PROBE | |
911 | if (probe_io) | |
22916638 | 912 | do_io_probe(s, start, size); |
1da177e4 LT |
913 | #endif |
914 | break; | |
915 | case REMOVE_MANAGED_RESOURCE: | |
22916638 | 916 | sub_interval(&data->io_db, start, size); |
1da177e4 LT |
917 | break; |
918 | default: | |
22916638 | 919 | ret = -EINVAL; |
1da177e4 LT |
920 | break; |
921 | } | |
1da177e4 LT |
922 | |
923 | return ret; | |
924 | } | |
925 | ||
926 | ||
3c29976a DB |
927 | #ifdef CONFIG_PCI |
928 | static int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
929 | { | |
930 | struct resource *res; | |
931 | int i, done = 0; | |
932 | ||
933 | if (!s->cb_dev || !s->cb_dev->bus) | |
934 | return -ENODEV; | |
935 | ||
0d078f6f | 936 | #if defined(CONFIG_X86) |
cf26e8dc DB |
937 | /* If this is the root bus, the risk of hitting some strange |
938 | * system devices is too high: If a driver isn't loaded, the | |
939 | * resources are not claimed; even if a driver is loaded, it | |
940 | * may not request all resources or even the wrong one. We | |
941 | * can neither trust the rest of the kernel nor ACPI/PNP and | |
942 | * CRS parsing to get it right. Therefore, use several | |
943 | * safeguards: | |
944 | * | |
945 | * - Do not auto-add resources if the CardBus bridge is on | |
946 | * the PCI root bus | |
947 | * | |
948 | * - Avoid any I/O ports < 0x100. | |
949 | * | |
950 | * - On PCI-PCI bridges, only use resources which are set up | |
951 | * exclusively for the secondary PCI bus: the risk of hitting | |
952 | * system devices is quite low, as they usually aren't | |
953 | * connected to the secondary PCI bus. | |
b6d00f0d DB |
954 | */ |
955 | if (s->cb_dev->bus->number == 0) | |
956 | return -EINVAL; | |
b6d00f0d | 957 | |
cf26e8dc DB |
958 | for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) { |
959 | res = s->cb_dev->bus->resource[i]; | |
960 | #else | |
89a74ecc | 961 | pci_bus_for_each_resource(s->cb_dev->bus, res, i) { |
cf26e8dc | 962 | #endif |
3c29976a DB |
963 | if (!res) |
964 | continue; | |
965 | ||
966 | if (res->flags & IORESOURCE_IO) { | |
cf26e8dc DB |
967 | /* safeguard against the root resource, where the |
968 | * risk of hitting any other device would be too | |
969 | * high */ | |
3c29976a DB |
970 | if (res == &ioport_resource) |
971 | continue; | |
cf26e8dc | 972 | |
f2e6cf76 JP |
973 | dev_info(&s->cb_dev->dev, |
974 | "pcmcia: parent PCI bridge window: %pR\n", | |
975 | res); | |
3c29976a DB |
976 | if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
977 | done |= IORESOURCE_IO; | |
978 | ||
979 | } | |
980 | ||
981 | if (res->flags & IORESOURCE_MEM) { | |
cf26e8dc DB |
982 | /* safeguard against the root resource, where the |
983 | * risk of hitting any other device would be too | |
984 | * high */ | |
3c29976a DB |
985 | if (res == &iomem_resource) |
986 | continue; | |
cf26e8dc | 987 | |
f2e6cf76 JP |
988 | dev_info(&s->cb_dev->dev, |
989 | "pcmcia: parent PCI bridge window: %pR\n", | |
990 | res); | |
3c29976a DB |
991 | if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) |
992 | done |= IORESOURCE_MEM; | |
993 | } | |
994 | } | |
995 | ||
996 | /* if we got at least one of IO, and one of MEM, we can be glad and | |
997 | * activate the PCMCIA subsystem */ | |
54bb5675 | 998 | if (done == (IORESOURCE_MEM | IORESOURCE_IO)) |
3c29976a DB |
999 | s->resource_setup_done = 1; |
1000 | ||
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | #else | |
1005 | ||
1006 | static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) | |
1007 | { | |
1008 | return -ENODEV; | |
1009 | } | |
1010 | ||
1011 | #endif | |
1012 | ||
1013 | ||
1da177e4 LT |
1014 | static int nonstatic_init(struct pcmcia_socket *s) |
1015 | { | |
1016 | struct socket_data *data; | |
1017 | ||
8084b372 | 1018 | data = kzalloc(sizeof(struct socket_data), GFP_KERNEL); |
1da177e4 LT |
1019 | if (!data) |
1020 | return -ENOMEM; | |
1da177e4 LT |
1021 | |
1022 | data->mem_db.next = &data->mem_db; | |
7b4884ca | 1023 | data->mem_db_valid.next = &data->mem_db_valid; |
1da177e4 LT |
1024 | data->io_db.next = &data->io_db; |
1025 | ||
1026 | s->resource_data = (void *) data; | |
1027 | ||
3c29976a DB |
1028 | nonstatic_autoadd_resources(s); |
1029 | ||
1da177e4 LT |
1030 | return 0; |
1031 | } | |
1032 | ||
1033 | static void nonstatic_release_resource_db(struct pcmcia_socket *s) | |
1034 | { | |
1035 | struct socket_data *data = s->resource_data; | |
1036 | struct resource_map *p, *q; | |
1037 | ||
7b4884ca DB |
1038 | for (p = data->mem_db_valid.next; p != &data->mem_db_valid; p = q) { |
1039 | q = p->next; | |
1040 | kfree(p); | |
1041 | } | |
1da177e4 LT |
1042 | for (p = data->mem_db.next; p != &data->mem_db; p = q) { |
1043 | q = p->next; | |
1044 | kfree(p); | |
1045 | } | |
1046 | for (p = data->io_db.next; p != &data->io_db; p = q) { | |
1047 | q = p->next; | |
1048 | kfree(p); | |
1049 | } | |
1da177e4 LT |
1050 | } |
1051 | ||
1052 | ||
1053 | struct pccard_resource_ops pccard_nonstatic_ops = { | |
1054 | .validate_mem = pcmcia_nonstatic_validate_mem, | |
b19a7275 | 1055 | .find_io = nonstatic_find_io, |
1da177e4 | 1056 | .find_mem = nonstatic_find_mem_region, |
1da177e4 LT |
1057 | .init = nonstatic_init, |
1058 | .exit = nonstatic_release_resource_db, | |
1059 | }; | |
1060 | EXPORT_SYMBOL(pccard_nonstatic_ops); | |
1061 | ||
1062 | ||
1063 | /* sysfs interface to the resource database */ | |
1064 | ||
87373318 GKH |
1065 | static ssize_t show_io_db(struct device *dev, |
1066 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1067 | { |
87373318 | 1068 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1069 | struct socket_data *data; |
1070 | struct resource_map *p; | |
1071 | ssize_t ret = 0; | |
1072 | ||
cfe5d809 | 1073 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
1074 | data = s->resource_data; |
1075 | ||
1076 | for (p = data->io_db.next; p != &data->io_db; p = p->next) { | |
1077 | if (ret > (PAGE_SIZE - 10)) | |
1078 | continue; | |
6d3fbe91 | 1079 | ret += scnprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
9fea84f4 DB |
1080 | "0x%08lx - 0x%08lx\n", |
1081 | ((unsigned long) p->base), | |
1082 | ((unsigned long) p->base + p->num - 1)); | |
1da177e4 LT |
1083 | } |
1084 | ||
cfe5d809 | 1085 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 1086 | return ret; |
1da177e4 LT |
1087 | } |
1088 | ||
87373318 GKH |
1089 | static ssize_t store_io_db(struct device *dev, |
1090 | struct device_attribute *attr, | |
1091 | const char *buf, size_t count) | |
1da177e4 | 1092 | { |
87373318 | 1093 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 1094 | unsigned long start_addr, end_addr; |
22916638 | 1095 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1096 | ssize_t ret = 0; |
1097 | ||
9fea84f4 | 1098 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 1099 | if (ret != 2) { |
9fea84f4 | 1100 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 1101 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 1102 | if (ret != 2) { |
9fea84f4 DB |
1103 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
1104 | &end_addr); | |
22916638 | 1105 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1106 | if (ret != 2) |
1107 | return -EINVAL; | |
1108 | } | |
1109 | } | |
1146bc74 | 1110 | if (end_addr < start_addr) |
1da177e4 LT |
1111 | return -EINVAL; |
1112 | ||
cfe5d809 | 1113 | mutex_lock(&s->ops_mutex); |
22916638 | 1114 | ret = adjust_io(s, add, start_addr, end_addr); |
cfe5d809 | 1115 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
1116 | |
1117 | return ret ? ret : count; | |
1118 | } | |
87373318 | 1119 | static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); |
1da177e4 | 1120 | |
87373318 GKH |
1121 | static ssize_t show_mem_db(struct device *dev, |
1122 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1123 | { |
87373318 | 1124 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1125 | struct socket_data *data; |
1126 | struct resource_map *p; | |
1127 | ssize_t ret = 0; | |
1128 | ||
cfe5d809 | 1129 | mutex_lock(&s->ops_mutex); |
1da177e4 LT |
1130 | data = s->resource_data; |
1131 | ||
7b4884ca DB |
1132 | for (p = data->mem_db_valid.next; p != &data->mem_db_valid; |
1133 | p = p->next) { | |
1134 | if (ret > (PAGE_SIZE - 10)) | |
1135 | continue; | |
6d3fbe91 | 1136 | ret += scnprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
7b4884ca DB |
1137 | "0x%08lx - 0x%08lx\n", |
1138 | ((unsigned long) p->base), | |
1139 | ((unsigned long) p->base + p->num - 1)); | |
1140 | } | |
1141 | ||
1da177e4 LT |
1142 | for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { |
1143 | if (ret > (PAGE_SIZE - 10)) | |
1144 | continue; | |
6d3fbe91 | 1145 | ret += scnprintf(&buf[ret], (PAGE_SIZE - ret - 1), |
9fea84f4 DB |
1146 | "0x%08lx - 0x%08lx\n", |
1147 | ((unsigned long) p->base), | |
1148 | ((unsigned long) p->base + p->num - 1)); | |
1da177e4 LT |
1149 | } |
1150 | ||
cfe5d809 | 1151 | mutex_unlock(&s->ops_mutex); |
9fea84f4 | 1152 | return ret; |
1da177e4 LT |
1153 | } |
1154 | ||
87373318 GKH |
1155 | static ssize_t store_mem_db(struct device *dev, |
1156 | struct device_attribute *attr, | |
1157 | const char *buf, size_t count) | |
1da177e4 | 1158 | { |
87373318 | 1159 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 | 1160 | unsigned long start_addr, end_addr; |
22916638 | 1161 | unsigned int add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1162 | ssize_t ret = 0; |
1163 | ||
9fea84f4 | 1164 | ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); |
1da177e4 | 1165 | if (ret != 2) { |
9fea84f4 | 1166 | ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); |
22916638 | 1167 | add = REMOVE_MANAGED_RESOURCE; |
1da177e4 | 1168 | if (ret != 2) { |
9fea84f4 DB |
1169 | ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr, |
1170 | &end_addr); | |
22916638 | 1171 | add = ADD_MANAGED_RESOURCE; |
1da177e4 LT |
1172 | if (ret != 2) |
1173 | return -EINVAL; | |
1174 | } | |
1175 | } | |
1146bc74 | 1176 | if (end_addr < start_addr) |
1da177e4 LT |
1177 | return -EINVAL; |
1178 | ||
cfe5d809 | 1179 | mutex_lock(&s->ops_mutex); |
22916638 | 1180 | ret = adjust_memory(s, add, start_addr, end_addr); |
cfe5d809 | 1181 | mutex_unlock(&s->ops_mutex); |
1da177e4 LT |
1182 | |
1183 | return ret ? ret : count; | |
1184 | } | |
87373318 | 1185 | static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); |
1da177e4 | 1186 | |
7d578961 DB |
1187 | static struct attribute *pccard_rsrc_attributes[] = { |
1188 | &dev_attr_available_resources_io.attr, | |
1189 | &dev_attr_available_resources_mem.attr, | |
1da177e4 LT |
1190 | NULL, |
1191 | }; | |
1192 | ||
7d578961 DB |
1193 | static const struct attribute_group rsrc_attributes = { |
1194 | .attrs = pccard_rsrc_attributes, | |
1195 | }; | |
1196 | ||
34cdf25a | 1197 | static int pccard_sysfs_add_rsrc(struct device *dev, |
d8539d81 | 1198 | struct class_interface *class_intf) |
1da177e4 | 1199 | { |
87373318 | 1200 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
7d578961 | 1201 | |
1da177e4 LT |
1202 | if (s->resource_ops != &pccard_nonstatic_ops) |
1203 | return 0; | |
7d578961 | 1204 | return sysfs_create_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1205 | } |
1206 | ||
e765a02c | 1207 | static void pccard_sysfs_remove_rsrc(struct device *dev, |
d8539d81 | 1208 | struct class_interface *class_intf) |
1da177e4 | 1209 | { |
87373318 | 1210 | struct pcmcia_socket *s = dev_get_drvdata(dev); |
1da177e4 LT |
1211 | |
1212 | if (s->resource_ops != &pccard_nonstatic_ops) | |
1213 | return; | |
7d578961 | 1214 | sysfs_remove_group(&dev->kobj, &rsrc_attributes); |
1da177e4 LT |
1215 | } |
1216 | ||
ed49f5d0 | 1217 | static struct class_interface pccard_rsrc_interface __refdata = { |
1da177e4 | 1218 | .class = &pcmcia_socket_class, |
87373318 | 1219 | .add_dev = &pccard_sysfs_add_rsrc, |
96364e3a | 1220 | .remove_dev = &pccard_sysfs_remove_rsrc, |
1da177e4 LT |
1221 | }; |
1222 | ||
1223 | static int __init nonstatic_sysfs_init(void) | |
1224 | { | |
1225 | return class_interface_register(&pccard_rsrc_interface); | |
1226 | } | |
1227 | ||
1228 | static void __exit nonstatic_sysfs_exit(void) | |
1229 | { | |
1230 | class_interface_unregister(&pccard_rsrc_interface); | |
1231 | } | |
1232 | ||
1233 | module_init(nonstatic_sysfs_init); | |
1234 | module_exit(nonstatic_sysfs_exit); |