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MIPS: Alchemy: remove unused SYS area structure
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / pcmcia / rsrc_nonstatic.c
blobc67638fe69146b05656187f94a41f76a06de32ad
1 /*
2 * rsrc_nonstatic.c -- Resource management routines for !SS_CAP_STATIC_MAP sockets
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
11 *
12 * (C) 1999 David A. Hinds
13 */
14
15 #include <linux/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>
27 #include <linux/io.h>
28
29 #include <asm/irq.h>
30
31 #include <pcmcia/cs_types.h>
32 #include <pcmcia/ss.h>
33 #include <pcmcia/cs.h>
34 #include <pcmcia/cistpl.h>
35 #include "cs_internal.h"
36
37 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
38 MODULE_LICENSE("GPL");
39
40 /* Parameters that can be set with 'insmod' */
41
42 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
43
44 INT_MODULE_PARM(probe_mem, 1); /* memory probe? */
45 #ifdef CONFIG_PCMCIA_PROBE
46 INT_MODULE_PARM(probe_io, 1); /* IO port probe? */
47 INT_MODULE_PARM(mem_limit, 0x10000);
48 #endif
49
50 /* for io_db and mem_db */
51 struct resource_map {
52 u_long base, num;
53 struct resource_map *next;
54 };
55
56 struct socket_data {
57 struct resource_map mem_db;
58 struct resource_map io_db;
59 unsigned int rsrc_mem_probe;
60 };
61
62 static DEFINE_MUTEX(rsrc_mutex);
63 #define MEM_PROBE_LOW (1 << 0)
64 #define MEM_PROBE_HIGH (1 << 1)
65
66
67 /*======================================================================
68
69 Linux resource management extensions
70
71 ======================================================================*/
72
73 static struct resource *
74 make_resource(resource_size_t b, resource_size_t n, int flags, const char *name)
75 {
76 struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
77
78 if (res) {
79 res->name = name;
80 res->start = b;
81 res->end = b + n - 1;
82 res->flags = flags;
83 }
84 return res;
85 }
86
87 static struct resource *
88 claim_region(struct pcmcia_socket *s, resource_size_t base,
89 resource_size_t size, int type, char *name)
90 {
91 struct resource *res, *parent;
92
93 parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource;
94 res = make_resource(base, size, type | IORESOURCE_BUSY, name);
95
96 if (res) {
97 #ifdef CONFIG_PCI
98 if (s && s->cb_dev)
99 parent = pci_find_parent_resource(s->cb_dev, res);
100 #endif
101 if (!parent || request_resource(parent, res)) {
102 kfree(res);
103 res = NULL;
104 }
105 }
106 return res;
107 }
108
109 static void free_region(struct resource *res)
110 {
111 if (res) {
112 release_resource(res);
113 kfree(res);
114 }
115 }
116
117 /*======================================================================
118
119 These manage the internal databases of available resources.
120
121 ======================================================================*/
122
123 static int add_interval(struct resource_map *map, u_long base, u_long num)
124 {
125 struct resource_map *p, *q;
126
127 for (p = map; ; p = p->next) {
128 if ((p != map) && (p->base+p->num-1 >= base))
129 return -1;
130 if ((p->next == map) || (p->next->base > base+num-1))
131 break;
132 }
133 q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
134 if (!q) {
135 printk(KERN_WARNING "out of memory to update resources\n");
136 return -ENOMEM;
137 }
138 q->base = base; q->num = num;
139 q->next = p->next; p->next = q;
140 return 0;
141 }
142
143 /*====================================================================*/
144
145 static int sub_interval(struct resource_map *map, u_long base, u_long num)
146 {
147 struct resource_map *p, *q;
148
149 for (p = map; ; p = q) {
150 q = p->next;
151 if (q == map)
152 break;
153 if ((q->base+q->num > base) && (base+num > q->base)) {
154 if (q->base >= base) {
155 if (q->base+q->num <= base+num) {
156 /* Delete whole block */
157 p->next = q->next;
158 kfree(q);
159 /* don't advance the pointer yet */
160 q = p;
161 } else {
162 /* Cut off bit from the front */
163 q->num = q->base + q->num - base - num;
164 q->base = base + num;
165 }
166 } else if (q->base+q->num <= base+num) {
167 /* Cut off bit from the end */
168 q->num = base - q->base;
169 } else {
170 /* Split the block into two pieces */
171 p = kmalloc(sizeof(struct resource_map),
172 GFP_KERNEL);
173 if (!p) {
174 printk(KERN_WARNING "out of memory to update resources\n");
175 return -ENOMEM;
176 }
177 p->base = base+num;
178 p->num = q->base+q->num - p->base;
179 q->num = base - q->base;
180 p->next = q->next ; q->next = p;
181 }
182 }
183 }
184 return 0;
185 }
186
187 /*======================================================================
188
189 These routines examine a region of IO or memory addresses to
190 determine what ranges might be genuinely available.
191
192 ======================================================================*/
193
194 #ifdef CONFIG_PCMCIA_PROBE
195 static void do_io_probe(struct pcmcia_socket *s, unsigned int base,
196 unsigned int num)
197 {
198 struct resource *res;
199 struct socket_data *s_data = s->resource_data;
200 unsigned int i, j, bad;
201 int any;
202 u_char *b, hole, most;
203
204 dev_printk(KERN_INFO, &s->dev, "cs: IO port probe %#x-%#x:",
205 base, base+num-1);
206
207 /* First, what does a floating port look like? */
208 b = kzalloc(256, GFP_KERNEL);
209 if (!b) {
210 printk("\n");
211 dev_printk(KERN_ERR, &s->dev,
212 "do_io_probe: unable to kmalloc 256 bytes");
213 return;
214 }
215 for (i = base, most = 0; i < base+num; i += 8) {
216 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA ioprobe");
217 if (!res)
218 continue;
219 hole = inb(i);
220 for (j = 1; j < 8; j++)
221 if (inb(i+j) != hole)
222 break;
223 free_region(res);
224 if ((j == 8) && (++b[hole] > b[most]))
225 most = hole;
226 if (b[most] == 127)
227 break;
228 }
229 kfree(b);
230
231 bad = any = 0;
232 for (i = base; i < base+num; i += 8) {
233 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA ioprobe");
234 if (!res)
235 continue;
236 for (j = 0; j < 8; j++)
237 if (inb(i+j) != most)
238 break;
239 free_region(res);
240 if (j < 8) {
241 if (!any)
242 printk(" excluding");
243 if (!bad)
244 bad = any = i;
245 } else {
246 if (bad) {
247 sub_interval(&s_data->io_db, bad, i-bad);
248 printk(" %#x-%#x", bad, i-1);
249 bad = 0;
250 }
251 }
252 }
253 if (bad) {
254 if ((num > 16) && (bad == base) && (i == base+num)) {
255 printk(" nothing: probe failed.\n");
256 return;
257 } else {
258 sub_interval(&s_data->io_db, bad, i-bad);
259 printk(" %#x-%#x", bad, i-1);
260 }
261 }
262
263 printk(any ? "\n" : " clean.\n");
264 }
265 #endif
266
267 /*======================================================================
268
269 This is tricky... when we set up CIS memory, we try to validate
270 the memory window space allocations.
271
272 ======================================================================*/
273
274 /* Validation function for cards with a valid CIS */
275 static int readable(struct pcmcia_socket *s, struct resource *res,
276 unsigned int *count)
277 {
278 int ret = -1;
279
280 s->cis_mem.res = res;
281 s->cis_virt = ioremap(res->start, s->map_size);
282 if (s->cis_virt) {
283 ret = pccard_validate_cis(s, count);
284 /* invalidate mapping and CIS cache */
285 iounmap(s->cis_virt);
286 s->cis_virt = NULL;
287 destroy_cis_cache(s);
288 }
289 s->cis_mem.res = NULL;
290 if ((ret != 0) || (*count == 0))
291 return 0;
292 return 1;
293 }
294
295 /* Validation function for simple memory cards */
296 static int checksum(struct pcmcia_socket *s, struct resource *res)
297 {
298 pccard_mem_map map;
299 int i, a = 0, b = -1, d;
300 void __iomem *virt;
301
302 virt = ioremap(res->start, s->map_size);
303 if (virt) {
304 map.map = 0;
305 map.flags = MAP_ACTIVE;
306 map.speed = 0;
307 map.res = res;
308 map.card_start = 0;
309 s->ops->set_mem_map(s, &map);
310
311 /* Don't bother checking every word... */
312 for (i = 0; i < s->map_size; i += 44) {
313 d = readl(virt+i);
314 a += d;
315 b &= d;
316 }
317
318 map.flags = 0;
319 s->ops->set_mem_map(s, &map);
320
321 iounmap(virt);
322 }
323
324 return (b == -1) ? -1 : (a>>1);
325 }
326
327 static int
328 cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size)
329 {
330 struct resource *res1, *res2;
331 unsigned int info1, info2;
332 int ret = 0;
333
334 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "PCMCIA memprobe");
335 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM,
336 "PCMCIA memprobe");
337
338 if (res1 && res2) {
339 ret = readable(s, res1, &info1);
340 ret += readable(s, res2, &info2);
341 }
342
343 free_region(res2);
344 free_region(res1);
345
346 return (ret == 2) && (info1 == info2);
347 }
348
349 static int
350 checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size)
351 {
352 struct resource *res1, *res2;
353 int a = -1, b = -1;
354
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");
358
359 if (res1 && res2) {
360 a = checksum(s, res1);
361 b = checksum(s, res2);
362 }
363
364 free_region(res2);
365 free_region(res1);
366
367 return (a == b) && (a >= 0);
368 }
369
370 /*======================================================================
371
372 The memory probe. If the memory list includes a 64K-aligned block
373 below 1MB, we probe in 64K chunks, and as soon as we accumulate at
374 least mem_limit free space, we quit.
375
376 ======================================================================*/
377
378 static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
379 {
380 struct socket_data *s_data = s->resource_data;
381 u_long i, j, bad, fail, step;
382
383 dev_printk(KERN_INFO, &s->dev, "cs: memory probe 0x%06lx-0x%06lx:",
384 base, base+num-1);
385 bad = fail = 0;
386 step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff);
387 /* don't allow too large steps */
388 if (step > 0x800000)
389 step = 0x800000;
390 /* cis_readable wants to map 2x map_size */
391 if (step < 2 * s->map_size)
392 step = 2 * s->map_size;
393 for (i = j = base; i < base+num; i = j + step) {
394 if (!fail) {
395 for (j = i; j < base+num; j += step) {
396 if (cis_readable(s, j, step))
397 break;
398 }
399 fail = ((i == base) && (j == base+num));
400 }
401 if (fail) {
402 for (j = i; j < base+num; j += 2*step)
403 if (checksum_match(s, j, step) &&
404 checksum_match(s, j + step, step))
405 break;
406 }
407 if (i != j) {
408 if (!bad)
409 printk(" excluding");
410 printk(" %#05lx-%#05lx", i, j-1);
411 sub_interval(&s_data->mem_db, i, j-i);
412 bad += j-i;
413 }
414 }
415 printk(bad ? "\n" : " clean.\n");
416 return num - bad;
417 }
418
419 #ifdef CONFIG_PCMCIA_PROBE
420
421 static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s)
422 {
423 struct socket_data *s_data = s->resource_data;
424 u_long ok;
425 if (m == &s_data->mem_db)
426 return 0;
427 ok = inv_probe(m->next, s);
428 if (ok) {
429 if (m->base >= 0x100000)
430 sub_interval(&s_data->mem_db, m->base, m->num);
431 return ok;
432 }
433 if (m->base < 0x100000)
434 return 0;
435 return do_mem_probe(m->base, m->num, s);
436 }
437
438 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
439 {
440 struct resource_map *m, mm;
441 static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
442 unsigned long b, i, ok = 0;
443 struct socket_data *s_data = s->resource_data;
444
445 /* We do up to four passes through the list */
446 if (probe_mask & MEM_PROBE_HIGH) {
447 if (inv_probe(s_data->mem_db.next, s) > 0)
448 return 0;
449 dev_printk(KERN_NOTICE, &s->dev,
450 "cs: warning: no high memory space available!\n");
451 return -ENODEV;
452 }
453
454 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
455 mm = *m;
456 /* Only probe < 1 MB */
457 if (mm.base >= 0x100000)
458 continue;
459 if ((mm.base | mm.num) & 0xffff) {
460 ok += do_mem_probe(mm.base, mm.num, s);
461 continue;
462 }
463 /* Special probe for 64K-aligned block */
464 for (i = 0; i < 4; i++) {
465 b = order[i] << 12;
466 if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
467 if (ok >= mem_limit)
468 sub_interval(&s_data->mem_db, b, 0x10000);
469 else
470 ok += do_mem_probe(b, 0x10000, s);
471 }
472 }
473 }
474
475 if (ok > 0)
476 return 0;
477
478 return -ENODEV;
479 }
480
481 #else /* CONFIG_PCMCIA_PROBE */
482
483 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
484 {
485 struct resource_map *m, mm;
486 struct socket_data *s_data = s->resource_data;
487 unsigned long ok = 0;
488
489 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
490 mm = *m;
491 ok += do_mem_probe(mm.base, mm.num, s);
492 }
493 if (ok > 0)
494 return 0;
495 return -ENODEV;
496 }
497
498 #endif /* CONFIG_PCMCIA_PROBE */
499
500
501 /*
502 * Locking note: Must be called with skt_mutex held!
503 */
504 static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
505 {
506 struct socket_data *s_data = s->resource_data;
507 unsigned int probe_mask = MEM_PROBE_LOW;
508 int ret = 0;
509
510 if (!probe_mem)
511 return 0;
512
513 mutex_lock(&rsrc_mutex);
514
515 if (s->features & SS_CAP_PAGE_REGS)
516 probe_mask = MEM_PROBE_HIGH;
517
518 if (probe_mask & ~s_data->rsrc_mem_probe) {
519 if (s->state & SOCKET_PRESENT)
520 ret = validate_mem(s, probe_mask);
521 if (!ret)
522 s_data->rsrc_mem_probe |= probe_mask;
523 }
524
525 mutex_unlock(&rsrc_mutex);
526
527 return ret;
528 }
529
530 struct pcmcia_align_data {
531 unsigned long mask;
532 unsigned long offset;
533 struct resource_map *map;
534 };
535
536 static resource_size_t
537 pcmcia_common_align(void *align_data, const struct resource *res,
538 resource_size_t size, resource_size_t align)
539 {
540 struct pcmcia_align_data *data = align_data;
541 resource_size_t start;
542 /*
543 * Ensure that we have the correct start address
544 */
545 start = (res->start & ~data->mask) + data->offset;
546 if (start < res->start)
547 start += data->mask + 1;
548 return start;
549 }
550
551 static resource_size_t
552 pcmcia_align(void *align_data, const struct resource *res,
553 resource_size_t size, resource_size_t align)
554 {
555 struct pcmcia_align_data *data = align_data;
556 struct resource_map *m;
557 resource_size_t start;
558
559 start = pcmcia_common_align(data, res, size, align);
560
561 for (m = data->map->next; m != data->map; m = m->next) {
562 unsigned long start = m->base;
563 unsigned long end = m->base + m->num - 1;
564
565 /*
566 * If the lower resources are not available, try aligning
567 * to this entry of the resource database to see if it'll
568 * fit here.
569 */
570 if (res->start < start) {
571 start = pcmcia_common_align(data, res, size, align);
572 }
573
574 /*
575 * If we're above the area which was passed in, there's
576 * no point proceeding.
577 */
578 if (res->start >= res->end)
579 break;
580
581 if ((res->start + size - 1) <= end)
582 break;
583 }
584
585 /*
586 * If we failed to find something suitable, ensure we fail.
587 */
588 if (m == data->map)
589 start = res->end;
590
591 return start;
592 }
593
594 /*
595 * Adjust an existing IO region allocation, but making sure that we don't
596 * encroach outside the resources which the user supplied.
597 */
598 static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start,
599 unsigned long r_end, struct pcmcia_socket *s)
600 {
601 struct resource_map *m;
602 struct socket_data *s_data = s->resource_data;
603 int ret = -ENOMEM;
604
605 mutex_lock(&rsrc_mutex);
606 for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) {
607 unsigned long start = m->base;
608 unsigned long end = m->base + m->num - 1;
609
610 if (start > r_start || r_end > end)
611 continue;
612
613 ret = adjust_resource(res, r_start, r_end - r_start + 1);
614 break;
615 }
616 mutex_unlock(&rsrc_mutex);
617
618 return ret;
619 }
620
621 /*======================================================================
622
623 These find ranges of I/O ports or memory addresses that are not
624 currently allocated by other devices.
625
626 The 'align' field should reflect the number of bits of address
627 that need to be preserved from the initial value of *base. It
628 should be a power of two, greater than or equal to 'num'. A value
629 of 0 means that all bits of *base are significant. *base should
630 also be strictly less than 'align'.
631
632 ======================================================================*/
633
634 static struct resource *nonstatic_find_io_region(unsigned long base, int num,
635 unsigned long align, struct pcmcia_socket *s)
636 {
637 struct resource *res = make_resource(0, num, IORESOURCE_IO, dev_name(&s->dev));
638 struct socket_data *s_data = s->resource_data;
639 struct pcmcia_align_data data;
640 unsigned long min = base;
641 int ret;
642
643 if (align == 0)
644 align = 0x10000;
645
646 data.mask = align - 1;
647 data.offset = base & data.mask;
648 data.map = &s_data->io_db;
649
650 mutex_lock(&rsrc_mutex);
651 #ifdef CONFIG_PCI
652 if (s->cb_dev) {
653 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
654 min, 0, pcmcia_align, &data);
655 } else
656 #endif
657 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
658 1, pcmcia_align, &data);
659 mutex_unlock(&rsrc_mutex);
660
661 if (ret != 0) {
662 kfree(res);
663 res = NULL;
664 }
665 return res;
666 }
667
668 static struct resource *nonstatic_find_mem_region(u_long base, u_long num,
669 u_long align, int low, struct pcmcia_socket *s)
670 {
671 struct resource *res = make_resource(0, num, IORESOURCE_MEM, dev_name(&s->dev));
672 struct socket_data *s_data = s->resource_data;
673 struct pcmcia_align_data data;
674 unsigned long min, max;
675 int ret, i;
676
677 low = low || !(s->features & SS_CAP_PAGE_REGS);
678
679 data.mask = align - 1;
680 data.offset = base & data.mask;
681 data.map = &s_data->mem_db;
682
683 for (i = 0; i < 2; i++) {
684 if (low) {
685 max = 0x100000UL;
686 min = base < max ? base : 0;
687 } else {
688 max = ~0UL;
689 min = 0x100000UL + base;
690 }
691
692 mutex_lock(&rsrc_mutex);
693 #ifdef CONFIG_PCI
694 if (s->cb_dev) {
695 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num,
696 1, min, 0,
697 pcmcia_align, &data);
698 } else
699 #endif
700 ret = allocate_resource(&iomem_resource, res, num, min,
701 max, 1, pcmcia_align, &data);
702 mutex_unlock(&rsrc_mutex);
703 if (ret == 0 || low)
704 break;
705 low = 1;
706 }
707
708 if (ret != 0) {
709 kfree(res);
710 res = NULL;
711 }
712 return res;
713 }
714
715
716 static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
717 {
718 struct socket_data *data = s->resource_data;
719 unsigned long size = end - start + 1;
720 int ret = 0;
721
722 if (end < start)
723 return -EINVAL;
724
725 mutex_lock(&rsrc_mutex);
726 switch (action) {
727 case ADD_MANAGED_RESOURCE:
728 ret = add_interval(&data->mem_db, start, size);
729 break;
730 case REMOVE_MANAGED_RESOURCE:
731 ret = sub_interval(&data->mem_db, start, size);
732 if (!ret) {
733 struct pcmcia_socket *socket;
734 down_read(&pcmcia_socket_list_rwsem);
735 list_for_each_entry(socket, &pcmcia_socket_list, socket_list)
736 release_cis_mem(socket);
737 up_read(&pcmcia_socket_list_rwsem);
738 }
739 break;
740 default:
741 ret = -EINVAL;
742 }
743 mutex_unlock(&rsrc_mutex);
744
745 return ret;
746 }
747
748
749 static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
750 {
751 struct socket_data *data = s->resource_data;
752 unsigned long size = end - start + 1;
753 int ret = 0;
754
755 if (end < start)
756 return -EINVAL;
757
758 if (end > IO_SPACE_LIMIT)
759 return -EINVAL;
760
761 mutex_lock(&rsrc_mutex);
762 switch (action) {
763 case ADD_MANAGED_RESOURCE:
764 if (add_interval(&data->io_db, start, size) != 0) {
765 ret = -EBUSY;
766 break;
767 }
768 #ifdef CONFIG_PCMCIA_PROBE
769 if (probe_io)
770 do_io_probe(s, start, size);
771 #endif
772 break;
773 case REMOVE_MANAGED_RESOURCE:
774 sub_interval(&data->io_db, start, size);
775 break;
776 default:
777 ret = -EINVAL;
778 break;
779 }
780 mutex_unlock(&rsrc_mutex);
781
782 return ret;
783 }
784
785
786 #ifdef CONFIG_PCI
787 static int nonstatic_autoadd_resources(struct pcmcia_socket *s)
788 {
789 struct resource *res;
790 int i, done = 0;
791
792 if (!s->cb_dev || !s->cb_dev->bus)
793 return -ENODEV;
794
795 #if defined(CONFIG_X86)
796 /* If this is the root bus, the risk of hitting
797 * some strange system devices which aren't protected
798 * by either ACPI resource tables or properly requested
799 * resources is too big. Therefore, don't do auto-adding
800 * of resources at the moment.
801 */
802 if (s->cb_dev->bus->number == 0)
803 return -EINVAL;
804 #endif
805
806 pci_bus_for_each_resource(s->cb_dev->bus, res, i) {
807 if (!res)
808 continue;
809
810 if (res->flags & IORESOURCE_IO) {
811 if (res == &ioport_resource)
812 continue;
813 dev_printk(KERN_INFO, &s->cb_dev->dev,
814 "pcmcia: parent PCI bridge I/O "
815 "window: 0x%llx - 0x%llx\n",
816 (unsigned long long)res->start,
817 (unsigned long long)res->end);
818 if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end))
819 done |= IORESOURCE_IO;
820
821 }
822
823 if (res->flags & IORESOURCE_MEM) {
824 if (res == &iomem_resource)
825 continue;
826 dev_printk(KERN_INFO, &s->cb_dev->dev,
827 "pcmcia: parent PCI bridge Memory "
828 "window: 0x%llx - 0x%llx\n",
829 (unsigned long long)res->start,
830 (unsigned long long)res->end);
831 if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end))
832 done |= IORESOURCE_MEM;
833 }
834 }
835
836 /* if we got at least one of IO, and one of MEM, we can be glad and
837 * activate the PCMCIA subsystem */
838 if (done == (IORESOURCE_MEM | IORESOURCE_IO))
839 s->resource_setup_done = 1;
840
841 return 0;
842 }
843
844 #else
845
846 static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s)
847 {
848 return -ENODEV;
849 }
850
851 #endif
852
853
854 static int nonstatic_init(struct pcmcia_socket *s)
855 {
856 struct socket_data *data;
857
858 data = kzalloc(sizeof(struct socket_data), GFP_KERNEL);
859 if (!data)
860 return -ENOMEM;
861
862 data->mem_db.next = &data->mem_db;
863 data->io_db.next = &data->io_db;
864
865 s->resource_data = (void *) data;
866
867 nonstatic_autoadd_resources(s);
868
869 return 0;
870 }
871
872 static void nonstatic_release_resource_db(struct pcmcia_socket *s)
873 {
874 struct socket_data *data = s->resource_data;
875 struct resource_map *p, *q;
876
877 mutex_lock(&rsrc_mutex);
878 for (p = data->mem_db.next; p != &data->mem_db; p = q) {
879 q = p->next;
880 kfree(p);
881 }
882 for (p = data->io_db.next; p != &data->io_db; p = q) {
883 q = p->next;
884 kfree(p);
885 }
886 mutex_unlock(&rsrc_mutex);
887 }
888
889
890 struct pccard_resource_ops pccard_nonstatic_ops = {
891 .validate_mem = pcmcia_nonstatic_validate_mem,
892 .adjust_io_region = nonstatic_adjust_io_region,
893 .find_io = nonstatic_find_io_region,
894 .find_mem = nonstatic_find_mem_region,
895 .add_io = adjust_io,
896 .add_mem = adjust_memory,
897 .init = nonstatic_init,
898 .exit = nonstatic_release_resource_db,
899 };
900 EXPORT_SYMBOL(pccard_nonstatic_ops);
901
902
903 /* sysfs interface to the resource database */
904
905 static ssize_t show_io_db(struct device *dev,
906 struct device_attribute *attr, char *buf)
907 {
908 struct pcmcia_socket *s = dev_get_drvdata(dev);
909 struct socket_data *data;
910 struct resource_map *p;
911 ssize_t ret = 0;
912
913 mutex_lock(&rsrc_mutex);
914 data = s->resource_data;
915
916 for (p = data->io_db.next; p != &data->io_db; p = p->next) {
917 if (ret > (PAGE_SIZE - 10))
918 continue;
919 ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1),
920 "0x%08lx - 0x%08lx\n",
921 ((unsigned long) p->base),
922 ((unsigned long) p->base + p->num - 1));
923 }
924
925 mutex_unlock(&rsrc_mutex);
926 return ret;
927 }
928
929 static ssize_t store_io_db(struct device *dev,
930 struct device_attribute *attr,
931 const char *buf, size_t count)
932 {
933 struct pcmcia_socket *s = dev_get_drvdata(dev);
934 unsigned long start_addr, end_addr;
935 unsigned int add = ADD_MANAGED_RESOURCE;
936 ssize_t ret = 0;
937
938 ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
939 if (ret != 2) {
940 ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
941 add = REMOVE_MANAGED_RESOURCE;
942 if (ret != 2) {
943 ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr,
944 &end_addr);
945 add = ADD_MANAGED_RESOURCE;
946 if (ret != 2)
947 return -EINVAL;
948 }
949 }
950 if (end_addr < start_addr)
951 return -EINVAL;
952
953 ret = adjust_io(s, add, start_addr, end_addr);
954 if (!ret)
955 s->resource_setup_new = 1;
956
957 return ret ? ret : count;
958 }
959 static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db);
960
961 static ssize_t show_mem_db(struct device *dev,
962 struct device_attribute *attr, char *buf)
963 {
964 struct pcmcia_socket *s = dev_get_drvdata(dev);
965 struct socket_data *data;
966 struct resource_map *p;
967 ssize_t ret = 0;
968
969 mutex_lock(&rsrc_mutex);
970 data = s->resource_data;
971
972 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) {
973 if (ret > (PAGE_SIZE - 10))
974 continue;
975 ret += snprintf(&buf[ret], (PAGE_SIZE - ret - 1),
976 "0x%08lx - 0x%08lx\n",
977 ((unsigned long) p->base),
978 ((unsigned long) p->base + p->num - 1));
979 }
980
981 mutex_unlock(&rsrc_mutex);
982 return ret;
983 }
984
985 static ssize_t store_mem_db(struct device *dev,
986 struct device_attribute *attr,
987 const char *buf, size_t count)
988 {
989 struct pcmcia_socket *s = dev_get_drvdata(dev);
990 unsigned long start_addr, end_addr;
991 unsigned int add = ADD_MANAGED_RESOURCE;
992 ssize_t ret = 0;
993
994 ret = sscanf(buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
995 if (ret != 2) {
996 ret = sscanf(buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
997 add = REMOVE_MANAGED_RESOURCE;
998 if (ret != 2) {
999 ret = sscanf(buf, "0x%lx - 0x%lx", &start_addr,
1000 &end_addr);
1001 add = ADD_MANAGED_RESOURCE;
1002 if (ret != 2)
1003 return -EINVAL;
1004 }
1005 }
1006 if (end_addr < start_addr)
1007 return -EINVAL;
1008
1009 ret = adjust_memory(s, add, start_addr, end_addr);
1010 if (!ret)
1011 s->resource_setup_new = 1;
1012
1013 return ret ? ret : count;
1014 }
1015 static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db);
1016
1017 static struct attribute *pccard_rsrc_attributes[] = {
1018 &dev_attr_available_resources_io.attr,
1019 &dev_attr_available_resources_mem.attr,
1020 NULL,
1021 };
1022
1023 static const struct attribute_group rsrc_attributes = {
1024 .attrs = pccard_rsrc_attributes,
1025 };
1026
1027 static int __devinit pccard_sysfs_add_rsrc(struct device *dev,
1028 struct class_interface *class_intf)
1029 {
1030 struct pcmcia_socket *s = dev_get_drvdata(dev);
1031
1032 if (s->resource_ops != &pccard_nonstatic_ops)
1033 return 0;
1034 return sysfs_create_group(&dev->kobj, &rsrc_attributes);
1035 }
1036
1037 static void __devexit pccard_sysfs_remove_rsrc(struct device *dev,
1038 struct class_interface *class_intf)
1039 {
1040 struct pcmcia_socket *s = dev_get_drvdata(dev);
1041
1042 if (s->resource_ops != &pccard_nonstatic_ops)
1043 return;
1044 sysfs_remove_group(&dev->kobj, &rsrc_attributes);
1045 }
1046
1047 static struct class_interface pccard_rsrc_interface __refdata = {
1048 .class = &pcmcia_socket_class,
1049 .add_dev = &pccard_sysfs_add_rsrc,
1050 .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc),
1051 };
1052
1053 static int __init nonstatic_sysfs_init(void)
1054 {
1055 return class_interface_register(&pccard_rsrc_interface);
1056 }
1057
1058 static void __exit nonstatic_sysfs_exit(void)
1059 {
1060 class_interface_unregister(&pccard_rsrc_interface);
1061 }
1062
1063 module_init(nonstatic_sysfs_init);
1064 module_exit(nonstatic_sysfs_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree