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/cistpl.h>
35 #include "cs_internal.h"
37 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
38 MODULE_LICENSE("GPL");
40 /* Parameters that can be set with 'insmod' */
42 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
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);
50 /* for io_db and mem_db */
53 struct resource_map *next;
57 struct resource_map mem_db;
58 struct resource_map io_db;
59 unsigned int rsrc_mem_probe;
62 static DEFINE_MUTEX(rsrc_mutex);
63 #define MEM_PROBE_LOW (1 << 0)
64 #define MEM_PROBE_HIGH (1 << 1)
67 /*======================================================================
69 Linux resource management extensions
71 ======================================================================*/
73 static struct resource *
74 make_resource(resource_size_t b, resource_size_t n, int flags, char *name)
76 struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
87 static struct resource *
88 claim_region(struct pcmcia_socket *s, resource_size_t base,
89 resource_size_t size, int type, char *name)
91 struct resource *res, *parent;
93 parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource;
94 res = make_resource(base, size, type | IORESOURCE_BUSY, name);
99 parent = pci_find_parent_resource(s->cb_dev, res);
101 if (!parent || request_resource(parent, res)) {
109 static void free_region(struct resource *res)
112 release_resource(res);
117 /*======================================================================
119 These manage the internal databases of available resources.
121 ======================================================================*/
123 static int add_interval(struct resource_map *map, u_long base, u_long num)
125 struct resource_map *p, *q;
127 for (p = map; ; p = p->next) {
128 if ((p != map) && (p->base+p->num-1 >= base))
130 if ((p->next == map) || (p->next->base > base+num-1))
133 q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
134 if (!q) return CS_OUT_OF_RESOURCE;
135 q->base = base; q->num = num;
136 q->next = p->next; p->next = q;
140 /*====================================================================*/
142 static int sub_interval(struct resource_map *map, u_long base, u_long num)
144 struct resource_map *p, *q;
146 for (p = map; ; p = q) {
150 if ((q->base+q->num > base) && (base+num > q->base)) {
151 if (q->base >= base) {
152 if (q->base+q->num <= base+num) {
153 /* Delete whole block */
156 /* don't advance the pointer yet */
159 /* Cut off bit from the front */
160 q->num = q->base + q->num - base - num;
161 q->base = base + num;
163 } else if (q->base+q->num <= base+num) {
164 /* Cut off bit from the end */
165 q->num = base - q->base;
167 /* Split the block into two pieces */
168 p = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
169 if (!p) return CS_OUT_OF_RESOURCE;
171 p->num = q->base+q->num - p->base;
172 q->num = base - q->base;
173 p->next = q->next ; q->next = p;
180 /*======================================================================
182 These routines examine a region of IO or memory addresses to
183 determine what ranges might be genuinely available.
185 ======================================================================*/
187 #ifdef CONFIG_PCMCIA_PROBE
188 static void do_io_probe(struct pcmcia_socket *s, unsigned int base,
191 struct resource *res;
192 struct socket_data *s_data = s->resource_data;
193 unsigned int i, j, bad;
195 u_char *b, hole, most;
197 printk(KERN_INFO "cs: IO port probe %#x-%#x:",
200 /* First, what does a floating port look like? */
201 b = kzalloc(256, GFP_KERNEL);
203 printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes");
206 for (i = base, most = 0; i < base+num; i += 8) {
207 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
211 for (j = 1; j < 8; j++)
212 if (inb(i+j) != hole) break;
214 if ((j == 8) && (++b[hole] > b[most]))
216 if (b[most] == 127) break;
221 for (i = base; i < base+num; i += 8) {
222 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
225 for (j = 0; j < 8; j++)
226 if (inb(i+j) != most) break;
230 printk(" excluding");
235 sub_interval(&s_data->io_db, bad, i-bad);
236 printk(" %#x-%#x", bad, i-1);
242 if ((num > 16) && (bad == base) && (i == base+num)) {
243 printk(" nothing: probe failed.\n");
246 sub_interval(&s_data->io_db, bad, i-bad);
247 printk(" %#x-%#x", bad, i-1);
251 printk(any ? "\n" : " clean.\n");
255 /*======================================================================
257 This is tricky... when we set up CIS memory, we try to validate
258 the memory window space allocations.
260 ======================================================================*/
262 /* Validation function for cards with a valid CIS */
263 static int readable(struct pcmcia_socket *s, struct resource *res,
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, count);
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) || (count == 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 unsigned int 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 == info2);
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);
770 static int nonstatic_autoadd_resources(struct pcmcia_socket *s)
772 struct resource *res;
775 if (!s->cb_dev || !s->cb_dev->bus)
778 #if defined(CONFIG_X86)
779 /* If this is the root bus, the risk of hitting
780 * some strange system devices which aren't protected
781 * by either ACPI resource tables or properly requested
782 * resources is too big. Therefore, don't do auto-adding
783 * of resources at the moment.
785 if (s->cb_dev->bus->number == 0)
789 for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) {
790 res = s->cb_dev->bus->resource[i];
794 if (res->flags & IORESOURCE_IO) {
795 if (res == &ioport_resource)
797 printk(KERN_INFO "pcmcia: parent PCI bridge I/O "
798 "window: 0x%llx - 0x%llx\n",
799 (unsigned long long)res->start,
800 (unsigned long long)res->end);
801 if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end))
802 done |= IORESOURCE_IO;
806 if (res->flags & IORESOURCE_MEM) {
807 if (res == &iomem_resource)
809 printk(KERN_INFO "pcmcia: parent PCI bridge Memory "
810 "window: 0x%llx - 0x%llx\n",
811 (unsigned long long)res->start,
812 (unsigned long long)res->end);
813 if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end))
814 done |= IORESOURCE_MEM;
818 /* if we got at least one of IO, and one of MEM, we can be glad and
819 * activate the PCMCIA subsystem */
820 if (done == (IORESOURCE_MEM | IORESOURCE_IO))
821 s->resource_setup_done = 1;
828 static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s)
836 static int nonstatic_init(struct pcmcia_socket *s)
838 struct socket_data *data;
840 data = kzalloc(sizeof(struct socket_data), GFP_KERNEL);
844 data->mem_db.next = &data->mem_db;
845 data->io_db.next = &data->io_db;
847 s->resource_data = (void *) data;
849 nonstatic_autoadd_resources(s);
854 static void nonstatic_release_resource_db(struct pcmcia_socket *s)
856 struct socket_data *data = s->resource_data;
857 struct resource_map *p, *q;
859 mutex_lock(&rsrc_mutex);
860 for (p = data->mem_db.next; p != &data->mem_db; p = q) {
864 for (p = data->io_db.next; p != &data->io_db; p = q) {
868 mutex_unlock(&rsrc_mutex);
872 struct pccard_resource_ops pccard_nonstatic_ops = {
873 .validate_mem = pcmcia_nonstatic_validate_mem,
874 .adjust_io_region = nonstatic_adjust_io_region,
875 .find_io = nonstatic_find_io_region,
876 .find_mem = nonstatic_find_mem_region,
878 .add_mem = adjust_memory,
879 .init = nonstatic_init,
880 .exit = nonstatic_release_resource_db,
882 EXPORT_SYMBOL(pccard_nonstatic_ops);
885 /* sysfs interface to the resource database */
887 static ssize_t show_io_db(struct device *dev,
888 struct device_attribute *attr, char *buf)
890 struct pcmcia_socket *s = dev_get_drvdata(dev);
891 struct socket_data *data;
892 struct resource_map *p;
895 mutex_lock(&rsrc_mutex);
896 data = s->resource_data;
898 for (p = data->io_db.next; p != &data->io_db; p = p->next) {
899 if (ret > (PAGE_SIZE - 10))
901 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
902 "0x%08lx - 0x%08lx\n",
903 ((unsigned long) p->base),
904 ((unsigned long) p->base + p->num - 1));
907 mutex_unlock(&rsrc_mutex);
911 static ssize_t store_io_db(struct device *dev,
912 struct device_attribute *attr,
913 const char *buf, size_t count)
915 struct pcmcia_socket *s = dev_get_drvdata(dev);
916 unsigned long start_addr, end_addr;
917 unsigned int add = ADD_MANAGED_RESOURCE;
920 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
922 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
923 add = REMOVE_MANAGED_RESOURCE;
925 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
926 add = ADD_MANAGED_RESOURCE;
931 if (end_addr < start_addr)
934 ret = adjust_io(s, add, start_addr, end_addr);
936 s->resource_setup_new = 1;
938 return ret ? ret : count;
940 static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db);
942 static ssize_t show_mem_db(struct device *dev,
943 struct device_attribute *attr, char *buf)
945 struct pcmcia_socket *s = dev_get_drvdata(dev);
946 struct socket_data *data;
947 struct resource_map *p;
950 mutex_lock(&rsrc_mutex);
951 data = s->resource_data;
953 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) {
954 if (ret > (PAGE_SIZE - 10))
956 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
957 "0x%08lx - 0x%08lx\n",
958 ((unsigned long) p->base),
959 ((unsigned long) p->base + p->num - 1));
962 mutex_unlock(&rsrc_mutex);
966 static ssize_t store_mem_db(struct device *dev,
967 struct device_attribute *attr,
968 const char *buf, size_t count)
970 struct pcmcia_socket *s = dev_get_drvdata(dev);
971 unsigned long start_addr, end_addr;
972 unsigned int add = ADD_MANAGED_RESOURCE;
975 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
977 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
978 add = REMOVE_MANAGED_RESOURCE;
980 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
981 add = ADD_MANAGED_RESOURCE;
986 if (end_addr < start_addr)
989 ret = adjust_memory(s, add, start_addr, end_addr);
991 s->resource_setup_new = 1;
993 return ret ? ret : count;
995 static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db);
997 static struct attribute *pccard_rsrc_attributes[] = {
998 &dev_attr_available_resources_io.attr,
999 &dev_attr_available_resources_mem.attr,
1003 static const struct attribute_group rsrc_attributes = {
1004 .attrs = pccard_rsrc_attributes,
1007 static int __devinit pccard_sysfs_add_rsrc(struct device *dev,
1008 struct class_interface *class_intf)
1010 struct pcmcia_socket *s = dev_get_drvdata(dev);
1012 if (s->resource_ops != &pccard_nonstatic_ops)
1014 return sysfs_create_group(&dev->kobj, &rsrc_attributes);
1017 static void __devexit pccard_sysfs_remove_rsrc(struct device *dev,
1018 struct class_interface *class_intf)
1020 struct pcmcia_socket *s = dev_get_drvdata(dev);
1022 if (s->resource_ops != &pccard_nonstatic_ops)
1024 sysfs_remove_group(&dev->kobj, &rsrc_attributes);
1027 static struct class_interface pccard_rsrc_interface __refdata = {
1028 .class = &pcmcia_socket_class,
1029 .add_dev = &pccard_sysfs_add_rsrc,
1030 .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc),
1033 static int __init nonstatic_sysfs_init(void)
1035 return class_interface_register(&pccard_rsrc_interface);
1038 static void __exit nonstatic_sysfs_exit(void)
1040 class_interface_unregister(&pccard_rsrc_interface);
1043 module_init(nonstatic_sysfs_init);
1044 module_exit(nonstatic_sysfs_exit);