2 * rsrc_nonstatic.c -- Resource management routines for !SS_CAP_STATIC_MAP sockets
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.
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.
12 * (C) 1999 David A. Hinds
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>
31 #include <pcmcia/cs_types.h>
32 #include <pcmcia/ss.h>
33 #include <pcmcia/cs.h>
34 #include <pcmcia/bulkmem.h>
35 #include <pcmcia/cistpl.h>
36 #include "cs_internal.h"
38 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
39 MODULE_LICENSE("GPL");
41 /* Parameters that can be set with 'insmod' */
43 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
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);
51 /* for io_db and mem_db */
54 struct resource_map *next;
58 struct resource_map mem_db;
59 struct resource_map io_db;
60 unsigned int rsrc_mem_probe;
63 static DEFINE_MUTEX(rsrc_mutex);
64 #define MEM_PROBE_LOW (1 << 0)
65 #define MEM_PROBE_HIGH (1 << 1)
68 /*======================================================================
70 Linux resource management extensions
72 ======================================================================*/
74 static struct resource *
75 make_resource(resource_size_t b, resource_size_t n, int flags, char *name)
77 struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
88 static struct resource *
89 claim_region(struct pcmcia_socket *s, resource_size_t base,
90 resource_size_t size, int type, char *name)
92 struct resource *res, *parent;
94 parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource;
95 res = make_resource(base, size, type | IORESOURCE_BUSY, name);
100 parent = pci_find_parent_resource(s->cb_dev, res);
102 if (!parent || request_resource(parent, res)) {
110 static void free_region(struct resource *res)
113 release_resource(res);
118 /*======================================================================
120 These manage the internal databases of available resources.
122 ======================================================================*/
124 static int add_interval(struct resource_map *map, u_long base, u_long num)
126 struct resource_map *p, *q;
128 for (p = map; ; p = p->next) {
129 if ((p != map) && (p->base+p->num-1 >= base))
131 if ((p->next == map) || (p->next->base > base+num-1))
134 q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
135 if (!q) return CS_OUT_OF_RESOURCE;
136 q->base = base; q->num = num;
137 q->next = p->next; p->next = q;
141 /*====================================================================*/
143 static int sub_interval(struct resource_map *map, u_long base, u_long num)
145 struct resource_map *p, *q;
147 for (p = map; ; p = q) {
151 if ((q->base+q->num > base) && (base+num > q->base)) {
152 if (q->base >= base) {
153 if (q->base+q->num <= base+num) {
154 /* Delete whole block */
157 /* don't advance the pointer yet */
160 /* Cut off bit from the front */
161 q->num = q->base + q->num - base - num;
162 q->base = base + num;
164 } else if (q->base+q->num <= base+num) {
165 /* Cut off bit from the end */
166 q->num = base - q->base;
168 /* Split the block into two pieces */
169 p = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
170 if (!p) return CS_OUT_OF_RESOURCE;
172 p->num = q->base+q->num - p->base;
173 q->num = base - q->base;
174 p->next = q->next ; q->next = p;
181 /*======================================================================
183 These routines examine a region of IO or memory addresses to
184 determine what ranges might be genuinely available.
186 ======================================================================*/
188 #ifdef CONFIG_PCMCIA_PROBE
189 static void do_io_probe(struct pcmcia_socket *s, unsigned int base,
192 struct resource *res;
193 struct socket_data *s_data = s->resource_data;
194 unsigned int i, j, bad;
196 u_char *b, hole, most;
198 printk(KERN_INFO "cs: IO port probe %#x-%#x:",
201 /* First, what does a floating port look like? */
202 b = kzalloc(256, GFP_KERNEL);
204 printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes");
207 for (i = base, most = 0; i < base+num; i += 8) {
208 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
212 for (j = 1; j < 8; j++)
213 if (inb(i+j) != hole) break;
215 if ((j == 8) && (++b[hole] > b[most]))
217 if (b[most] == 127) break;
222 for (i = base; i < base+num; i += 8) {
223 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
226 for (j = 0; j < 8; j++)
227 if (inb(i+j) != most) break;
231 printk(" excluding");
236 sub_interval(&s_data->io_db, bad, i-bad);
237 printk(" %#x-%#x", bad, i-1);
243 if ((num > 16) && (bad == base) && (i == base+num)) {
244 printk(" nothing: probe failed.\n");
247 sub_interval(&s_data->io_db, bad, i-bad);
248 printk(" %#x-%#x", bad, i-1);
252 printk(any ? "\n" : " clean.\n");
256 /*======================================================================
258 This is tricky... when we set up CIS memory, we try to validate
259 the memory window space allocations.
261 ======================================================================*/
263 /* Validation function for cards with a valid CIS */
264 static int readable(struct pcmcia_socket *s, struct resource *res, cisinfo_t *info)
268 s->cis_mem.res = res;
269 s->cis_virt = ioremap(res->start, s->map_size);
271 ret = pccard_validate_cis(s, BIND_FN_ALL, info);
272 /* invalidate mapping and CIS cache */
273 iounmap(s->cis_virt);
275 destroy_cis_cache(s);
277 s->cis_mem.res = NULL;
278 if ((ret != 0) || (info->Chains == 0))
283 /* Validation function for simple memory cards */
284 static int checksum(struct pcmcia_socket *s, struct resource *res)
287 int i, a = 0, b = -1, d;
290 virt = ioremap(res->start, s->map_size);
293 map.flags = MAP_ACTIVE;
297 s->ops->set_mem_map(s, &map);
299 /* Don't bother checking every word... */
300 for (i = 0; i < s->map_size; i += 44) {
307 s->ops->set_mem_map(s, &map);
312 return (b == -1) ? -1 : (a>>1);
316 cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size)
318 struct resource *res1, *res2;
319 cisinfo_t info1, info2;
322 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe");
323 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe");
326 ret = readable(s, res1, &info1);
327 ret += readable(s, res2, &info2);
333 return (ret == 2) && (info1.Chains == info2.Chains);
337 checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size)
339 struct resource *res1, *res2;
342 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe");
343 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe");
346 a = checksum(s, res1);
347 b = checksum(s, res2);
353 return (a == b) && (a >= 0);
356 /*======================================================================
358 The memory probe. If the memory list includes a 64K-aligned block
359 below 1MB, we probe in 64K chunks, and as soon as we accumulate at
360 least mem_limit free space, we quit.
362 ======================================================================*/
364 static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
366 struct socket_data *s_data = s->resource_data;
367 u_long i, j, bad, fail, step;
369 printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:",
372 step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff);
373 /* don't allow too large steps */
376 /* cis_readable wants to map 2x map_size */
377 if (step < 2 * s->map_size)
378 step = 2 * s->map_size;
379 for (i = j = base; i < base+num; i = j + step) {
381 for (j = i; j < base+num; j += step) {
382 if (cis_readable(s, j, step))
385 fail = ((i == base) && (j == base+num));
388 for (j = i; j < base+num; j += 2*step)
389 if (checksum_match(s, j, step) &&
390 checksum_match(s, j + step, step))
394 if (!bad) printk(" excluding");
395 printk(" %#05lx-%#05lx", i, j-1);
396 sub_interval(&s_data->mem_db, i, j-i);
400 printk(bad ? "\n" : " clean.\n");
404 #ifdef CONFIG_PCMCIA_PROBE
406 static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s)
408 struct socket_data *s_data = s->resource_data;
410 if (m == &s_data->mem_db)
412 ok = inv_probe(m->next, s);
414 if (m->base >= 0x100000)
415 sub_interval(&s_data->mem_db, m->base, m->num);
418 if (m->base < 0x100000)
420 return do_mem_probe(m->base, m->num, s);
423 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
425 struct resource_map *m, mm;
426 static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
427 unsigned long b, i, ok = 0;
428 struct socket_data *s_data = s->resource_data;
430 /* We do up to four passes through the list */
431 if (probe_mask & MEM_PROBE_HIGH) {
432 if (inv_probe(s_data->mem_db.next, s) > 0)
434 printk(KERN_NOTICE "cs: warning: no high memory space "
439 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
441 /* Only probe < 1 MB */
442 if (mm.base >= 0x100000)
444 if ((mm.base | mm.num) & 0xffff) {
445 ok += do_mem_probe(mm.base, mm.num, s);
448 /* Special probe for 64K-aligned block */
449 for (i = 0; i < 4; i++) {
451 if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
453 sub_interval(&s_data->mem_db, b, 0x10000);
455 ok += do_mem_probe(b, 0x10000, s);
466 #else /* CONFIG_PCMCIA_PROBE */
468 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
470 struct resource_map *m, mm;
471 struct socket_data *s_data = s->resource_data;
472 unsigned long ok = 0;
474 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
476 ok += do_mem_probe(mm.base, mm.num, s);
483 #endif /* CONFIG_PCMCIA_PROBE */
487 * Locking note: Must be called with skt_mutex held!
489 static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
491 struct socket_data *s_data = s->resource_data;
492 unsigned int probe_mask = MEM_PROBE_LOW;
498 mutex_lock(&rsrc_mutex);
500 if (s->features & SS_CAP_PAGE_REGS)
501 probe_mask = MEM_PROBE_HIGH;
503 if (probe_mask & ~s_data->rsrc_mem_probe) {
504 if (s->state & SOCKET_PRESENT)
505 ret = validate_mem(s, probe_mask);
507 s_data->rsrc_mem_probe |= probe_mask;
510 mutex_unlock(&rsrc_mutex);
515 struct pcmcia_align_data {
517 unsigned long offset;
518 struct resource_map *map;
522 pcmcia_common_align(void *align_data, struct resource *res,
523 resource_size_t size, resource_size_t align)
525 struct pcmcia_align_data *data = align_data;
526 resource_size_t start;
528 * Ensure that we have the correct start address
530 start = (res->start & ~data->mask) + data->offset;
531 if (start < res->start)
532 start += data->mask + 1;
537 pcmcia_align(void *align_data, struct resource *res, resource_size_t size,
538 resource_size_t align)
540 struct pcmcia_align_data *data = align_data;
541 struct resource_map *m;
543 pcmcia_common_align(data, res, size, align);
545 for (m = data->map->next; m != data->map; m = m->next) {
546 unsigned long start = m->base;
547 unsigned long end = m->base + m->num - 1;
550 * If the lower resources are not available, try aligning
551 * to this entry of the resource database to see if it'll
554 if (res->start < start) {
556 pcmcia_common_align(data, res, size, align);
560 * If we're above the area which was passed in, there's
561 * no point proceeding.
563 if (res->start >= res->end)
566 if ((res->start + size - 1) <= end)
571 * If we failed to find something suitable, ensure we fail.
574 res->start = res->end;
578 * Adjust an existing IO region allocation, but making sure that we don't
579 * encroach outside the resources which the user supplied.
581 static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start,
582 unsigned long r_end, struct pcmcia_socket *s)
584 struct resource_map *m;
585 struct socket_data *s_data = s->resource_data;
588 mutex_lock(&rsrc_mutex);
589 for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) {
590 unsigned long start = m->base;
591 unsigned long end = m->base + m->num - 1;
593 if (start > r_start || r_end > end)
596 ret = adjust_resource(res, r_start, r_end - r_start + 1);
599 mutex_unlock(&rsrc_mutex);
604 /*======================================================================
606 These find ranges of I/O ports or memory addresses that are not
607 currently allocated by other devices.
609 The 'align' field should reflect the number of bits of address
610 that need to be preserved from the initial value of *base. It
611 should be a power of two, greater than or equal to 'num'. A value
612 of 0 means that all bits of *base are significant. *base should
613 also be strictly less than 'align'.
615 ======================================================================*/
617 static struct resource *nonstatic_find_io_region(unsigned long base, int num,
618 unsigned long align, struct pcmcia_socket *s)
620 struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.bus_id);
621 struct socket_data *s_data = s->resource_data;
622 struct pcmcia_align_data data;
623 unsigned long min = base;
629 data.mask = align - 1;
630 data.offset = base & data.mask;
631 data.map = &s_data->io_db;
633 mutex_lock(&rsrc_mutex);
636 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
637 min, 0, pcmcia_align, &data);
640 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
641 1, pcmcia_align, &data);
642 mutex_unlock(&rsrc_mutex);
651 static struct resource * nonstatic_find_mem_region(u_long base, u_long num,
652 u_long align, int low, struct pcmcia_socket *s)
654 struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.bus_id);
655 struct socket_data *s_data = s->resource_data;
656 struct pcmcia_align_data data;
657 unsigned long min, max;
660 low = low || !(s->features & SS_CAP_PAGE_REGS);
662 data.mask = align - 1;
663 data.offset = base & data.mask;
664 data.map = &s_data->mem_db;
666 for (i = 0; i < 2; i++) {
669 min = base < max ? base : 0;
672 min = 0x100000UL + base;
675 mutex_lock(&rsrc_mutex);
678 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num,
680 pcmcia_align, &data);
683 ret = allocate_resource(&iomem_resource, res, num, min,
684 max, 1, pcmcia_align, &data);
685 mutex_unlock(&rsrc_mutex);
699 static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
701 struct socket_data *data = s->resource_data;
702 unsigned long size = end - start + 1;
708 mutex_lock(&rsrc_mutex);
710 case ADD_MANAGED_RESOURCE:
711 ret = add_interval(&data->mem_db, start, size);
713 case REMOVE_MANAGED_RESOURCE:
714 ret = sub_interval(&data->mem_db, start, size);
716 struct pcmcia_socket *socket;
717 down_read(&pcmcia_socket_list_rwsem);
718 list_for_each_entry(socket, &pcmcia_socket_list, socket_list)
719 release_cis_mem(socket);
720 up_read(&pcmcia_socket_list_rwsem);
726 mutex_unlock(&rsrc_mutex);
732 static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
734 struct socket_data *data = s->resource_data;
735 unsigned long size = end - start + 1;
741 if (end > IO_SPACE_LIMIT)
744 mutex_lock(&rsrc_mutex);
746 case ADD_MANAGED_RESOURCE:
747 if (add_interval(&data->io_db, start, size) != 0) {
751 #ifdef CONFIG_PCMCIA_PROBE
753 do_io_probe(s, start, size);
756 case REMOVE_MANAGED_RESOURCE:
757 sub_interval(&data->io_db, start, size);
763 mutex_unlock(&rsrc_mutex);
769 static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj)
773 switch (adj->Resource) {
774 case RES_MEMORY_RANGE:
775 end = adj->resource.memory.Base + adj->resource.memory.Size - 1;
776 return adjust_memory(s, adj->Action, adj->resource.memory.Base, end);
778 end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1;
779 return adjust_io(s, adj->Action, adj->resource.io.BasePort, end);
781 return CS_UNSUPPORTED_FUNCTION;
785 static int nonstatic_autoadd_resources(struct pcmcia_socket *s)
787 struct resource *res;
790 if (!s->cb_dev || !s->cb_dev->bus)
793 #if defined(CONFIG_X86)
794 /* If this is the root bus, the risk of hitting
795 * some strange system devices which aren't protected
796 * by either ACPI resource tables or properly requested
797 * resources is too big. Therefore, don't do auto-adding
798 * of resources at the moment.
800 if (s->cb_dev->bus->number == 0)
804 for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) {
805 res = s->cb_dev->bus->resource[i];
809 if (res->flags & IORESOURCE_IO) {
810 if (res == &ioport_resource)
812 printk(KERN_INFO "pcmcia: parent PCI bridge I/O "
813 "window: 0x%llx - 0x%llx\n",
814 (unsigned long long)res->start,
815 (unsigned long long)res->end);
816 if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end))
817 done |= IORESOURCE_IO;
821 if (res->flags & IORESOURCE_MEM) {
822 if (res == &iomem_resource)
824 printk(KERN_INFO "pcmcia: parent PCI bridge Memory "
825 "window: 0x%llx - 0x%llx\n",
826 (unsigned long long)res->start,
827 (unsigned long long)res->end);
828 if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end))
829 done |= IORESOURCE_MEM;
833 /* if we got at least one of IO, and one of MEM, we can be glad and
834 * activate the PCMCIA subsystem */
835 if (done == (IORESOURCE_MEM | IORESOURCE_IO))
836 s->resource_setup_done = 1;
843 static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s)
851 static int nonstatic_init(struct pcmcia_socket *s)
853 struct socket_data *data;
855 data = kzalloc(sizeof(struct socket_data), GFP_KERNEL);
859 data->mem_db.next = &data->mem_db;
860 data->io_db.next = &data->io_db;
862 s->resource_data = (void *) data;
864 nonstatic_autoadd_resources(s);
869 static void nonstatic_release_resource_db(struct pcmcia_socket *s)
871 struct socket_data *data = s->resource_data;
872 struct resource_map *p, *q;
874 mutex_lock(&rsrc_mutex);
875 for (p = data->mem_db.next; p != &data->mem_db; p = q) {
879 for (p = data->io_db.next; p != &data->io_db; p = q) {
883 mutex_unlock(&rsrc_mutex);
887 struct pccard_resource_ops pccard_nonstatic_ops = {
888 .validate_mem = pcmcia_nonstatic_validate_mem,
889 .adjust_io_region = nonstatic_adjust_io_region,
890 .find_io = nonstatic_find_io_region,
891 .find_mem = nonstatic_find_mem_region,
892 .adjust_resource = nonstatic_adjust_resource_info,
893 .init = nonstatic_init,
894 .exit = nonstatic_release_resource_db,
896 EXPORT_SYMBOL(pccard_nonstatic_ops);
899 /* sysfs interface to the resource database */
901 static ssize_t show_io_db(struct device *dev,
902 struct device_attribute *attr, char *buf)
904 struct pcmcia_socket *s = dev_get_drvdata(dev);
905 struct socket_data *data;
906 struct resource_map *p;
909 mutex_lock(&rsrc_mutex);
910 data = s->resource_data;
912 for (p = data->io_db.next; p != &data->io_db; p = p->next) {
913 if (ret > (PAGE_SIZE - 10))
915 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
916 "0x%08lx - 0x%08lx\n",
917 ((unsigned long) p->base),
918 ((unsigned long) p->base + p->num - 1));
921 mutex_unlock(&rsrc_mutex);
925 static ssize_t store_io_db(struct device *dev,
926 struct device_attribute *attr,
927 const char *buf, size_t count)
929 struct pcmcia_socket *s = dev_get_drvdata(dev);
930 unsigned long start_addr, end_addr;
931 unsigned int add = ADD_MANAGED_RESOURCE;
934 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
936 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
937 add = REMOVE_MANAGED_RESOURCE;
939 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
940 add = ADD_MANAGED_RESOURCE;
945 if (end_addr < start_addr)
948 ret = adjust_io(s, add, start_addr, end_addr);
950 s->resource_setup_new = 1;
952 return ret ? ret : count;
954 static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db);
956 static ssize_t show_mem_db(struct device *dev,
957 struct device_attribute *attr, char *buf)
959 struct pcmcia_socket *s = dev_get_drvdata(dev);
960 struct socket_data *data;
961 struct resource_map *p;
964 mutex_lock(&rsrc_mutex);
965 data = s->resource_data;
967 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) {
968 if (ret > (PAGE_SIZE - 10))
970 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
971 "0x%08lx - 0x%08lx\n",
972 ((unsigned long) p->base),
973 ((unsigned long) p->base + p->num - 1));
976 mutex_unlock(&rsrc_mutex);
980 static ssize_t store_mem_db(struct device *dev,
981 struct device_attribute *attr,
982 const char *buf, size_t count)
984 struct pcmcia_socket *s = dev_get_drvdata(dev);
985 unsigned long start_addr, end_addr;
986 unsigned int add = ADD_MANAGED_RESOURCE;
989 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
991 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
992 add = REMOVE_MANAGED_RESOURCE;
994 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
995 add = ADD_MANAGED_RESOURCE;
1000 if (end_addr < start_addr)
1003 ret = adjust_memory(s, add, start_addr, end_addr);
1005 s->resource_setup_new = 1;
1007 return ret ? ret : count;
1009 static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db);
1011 static struct device_attribute *pccard_rsrc_attributes[] = {
1012 &dev_attr_available_resources_io,
1013 &dev_attr_available_resources_mem,
1017 static int __devinit pccard_sysfs_add_rsrc(struct device *dev,
1018 struct class_interface *class_intf)
1020 struct pcmcia_socket *s = dev_get_drvdata(dev);
1021 struct device_attribute **attr;
1023 if (s->resource_ops != &pccard_nonstatic_ops)
1026 for (attr = pccard_rsrc_attributes; *attr; attr++) {
1027 ret = device_create_file(dev, *attr);
1035 static void __devexit pccard_sysfs_remove_rsrc(struct device *dev,
1036 struct class_interface *class_intf)
1038 struct pcmcia_socket *s = dev_get_drvdata(dev);
1039 struct device_attribute **attr;
1041 if (s->resource_ops != &pccard_nonstatic_ops)
1044 for (attr = pccard_rsrc_attributes; *attr; attr++)
1045 device_remove_file(dev, *attr);
1048 static struct class_interface pccard_rsrc_interface = {
1049 .class = &pcmcia_socket_class,
1050 .add_dev = &pccard_sysfs_add_rsrc,
1051 .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc),
1054 static int __init nonstatic_sysfs_init(void)
1056 return class_interface_register(&pccard_rsrc_interface);
1059 static void __exit nonstatic_sysfs_exit(void)
1061 class_interface_unregister(&pccard_rsrc_interface);
1064 module_init(nonstatic_sysfs_init);
1065 module_exit(nonstatic_sysfs_exit);