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/config.h>
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/init.h>
19 #include <linux/interrupt.h>
20 #include <linux/kernel.h>
21 #include <linux/errno.h>
22 #include <linux/types.h>
23 #include <linux/slab.h>
24 #include <linux/ioport.h>
25 #include <linux/timer.h>
26 #include <linux/pci.h>
27 #include <linux/device.h>
32 #include <pcmcia/cs_types.h>
33 #include <pcmcia/ss.h>
34 #include <pcmcia/cs.h>
35 #include <pcmcia/bulkmem.h>
36 #include <pcmcia/cistpl.h>
37 #include "cs_internal.h"
39 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
40 MODULE_LICENSE("GPL");
42 /* Parameters that can be set with 'insmod' */
44 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
46 INT_MODULE_PARM(probe_mem, 1); /* memory probe? */
47 #ifdef CONFIG_PCMCIA_PROBE
48 INT_MODULE_PARM(probe_io, 1); /* IO port probe? */
49 INT_MODULE_PARM(mem_limit, 0x10000);
52 /* for io_db and mem_db */
55 struct resource_map *next;
59 struct resource_map mem_db;
60 struct resource_map io_db;
61 unsigned int rsrc_mem_probe;
64 static DECLARE_MUTEX(rsrc_sem);
65 #define MEM_PROBE_LOW (1 << 0)
66 #define MEM_PROBE_HIGH (1 << 1)
69 /*======================================================================
71 Linux resource management extensions
73 ======================================================================*/
75 static struct resource *
76 make_resource(unsigned long b, unsigned long n, int flags, char *name)
78 struct resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
81 memset(res, 0, sizeof(*res));
90 static struct resource *
91 claim_region(struct pcmcia_socket *s, unsigned long base, unsigned long size,
94 struct resource *res, *parent;
96 parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource;
97 res = make_resource(base, size, type | IORESOURCE_BUSY, name);
102 parent = pci_find_parent_resource(s->cb_dev, res);
104 if (!parent || request_resource(parent, res)) {
112 static void free_region(struct resource *res)
115 release_resource(res);
120 /*======================================================================
122 These manage the internal databases of available resources.
124 ======================================================================*/
126 static int add_interval(struct resource_map *map, u_long base, u_long num)
128 struct resource_map *p, *q;
130 for (p = map; ; p = p->next) {
131 if ((p != map) && (p->base+p->num-1 >= base))
133 if ((p->next == map) || (p->next->base > base+num-1))
136 q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
137 if (!q) return CS_OUT_OF_RESOURCE;
138 q->base = base; q->num = num;
139 q->next = p->next; p->next = q;
143 /*====================================================================*/
145 static int sub_interval(struct resource_map *map, u_long base, u_long num)
147 struct resource_map *p, *q;
149 for (p = map; ; p = q) {
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 */
159 /* don't advance the pointer yet */
162 /* Cut off bit from the front */
163 q->num = q->base + q->num - base - num;
164 q->base = base + num;
166 } else if (q->base+q->num <= base+num) {
167 /* Cut off bit from the end */
168 q->num = base - q->base;
170 /* Split the block into two pieces */
171 p = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
172 if (!p) return CS_OUT_OF_RESOURCE;
174 p->num = q->base+q->num - p->base;
175 q->num = base - q->base;
176 p->next = q->next ; q->next = p;
183 /*======================================================================
185 These routines examine a region of IO or memory addresses to
186 determine what ranges might be genuinely available.
188 ======================================================================*/
190 #ifdef CONFIG_PCMCIA_PROBE
191 static void do_io_probe(struct pcmcia_socket *s, kio_addr_t base, kio_addr_t num)
193 struct resource *res;
194 struct socket_data *s_data = s->resource_data;
195 kio_addr_t i, j, bad;
197 u_char *b, hole, most;
199 printk(KERN_INFO "cs: IO port probe %#lx-%#lx:",
202 /* First, what does a floating port look like? */
203 b = kmalloc(256, GFP_KERNEL);
205 printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes");
209 for (i = base, most = 0; i < base+num; i += 8) {
210 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
214 for (j = 1; j < 8; j++)
215 if (inb(i+j) != hole) break;
217 if ((j == 8) && (++b[hole] > b[most]))
219 if (b[most] == 127) break;
224 for (i = base; i < base+num; i += 8) {
225 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
228 for (j = 0; j < 8; j++)
229 if (inb(i+j) != most) break;
233 printk(" excluding");
238 sub_interval(&s_data->io_db, bad, i-bad);
239 printk(" %#lx-%#lx", bad, i-1);
245 if ((num > 16) && (bad == base) && (i == base+num)) {
246 printk(" nothing: probe failed.\n");
249 sub_interval(&s_data->io_db, bad, i-bad);
250 printk(" %#lx-%#lx", bad, i-1);
254 printk(any ? "\n" : " clean.\n");
258 /*======================================================================
260 This is tricky... when we set up CIS memory, we try to validate
261 the memory window space allocations.
263 ======================================================================*/
265 /* Validation function for cards with a valid CIS */
266 static int readable(struct pcmcia_socket *s, struct resource *res, cisinfo_t *info)
270 s->cis_mem.res = res;
271 s->cis_virt = ioremap(res->start, s->map_size);
273 ret = pccard_validate_cis(s, BIND_FN_ALL, info);
274 /* invalidate mapping and CIS cache */
275 iounmap(s->cis_virt);
277 destroy_cis_cache(s);
279 s->cis_mem.res = NULL;
280 if ((ret != 0) || (info->Chains == 0))
285 /* Validation function for simple memory cards */
286 static int checksum(struct pcmcia_socket *s, struct resource *res)
289 int i, a = 0, b = -1, d;
292 virt = ioremap(res->start, s->map_size);
295 map.flags = MAP_ACTIVE;
299 s->ops->set_mem_map(s, &map);
301 /* Don't bother checking every word... */
302 for (i = 0; i < s->map_size; i += 44) {
309 s->ops->set_mem_map(s, &map);
314 return (b == -1) ? -1 : (a>>1);
318 cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size)
320 struct resource *res1, *res2;
321 cisinfo_t info1, info2;
324 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe");
325 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe");
328 ret = readable(s, res1, &info1);
329 ret += readable(s, res2, &info2);
335 return (ret == 2) && (info1.Chains == info2.Chains);
339 checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size)
341 struct resource *res1, *res2;
344 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe");
345 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe");
348 a = checksum(s, res1);
349 b = checksum(s, res2);
355 return (a == b) && (a >= 0);
358 /*======================================================================
360 The memory probe. If the memory list includes a 64K-aligned block
361 below 1MB, we probe in 64K chunks, and as soon as we accumulate at
362 least mem_limit free space, we quit.
364 ======================================================================*/
366 static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
368 struct socket_data *s_data = s->resource_data;
369 u_long i, j, bad, fail, step;
371 printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:",
374 step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff);
375 /* don't allow too large steps */
378 /* cis_readable wants to map 2x map_size */
379 if (step < 2 * s->map_size)
380 step = 2 * s->map_size;
381 for (i = j = base; i < base+num; i = j + step) {
383 for (j = i; j < base+num; j += step) {
384 if (cis_readable(s, j, step))
387 fail = ((i == base) && (j == base+num));
390 for (j = i; j < base+num; j += 2*step)
391 if (checksum_match(s, j, step) &&
392 checksum_match(s, j + step, step))
396 if (!bad) printk(" excluding");
397 printk(" %#05lx-%#05lx", i, j-1);
398 sub_interval(&s_data->mem_db, i, j-i);
402 printk(bad ? "\n" : " clean.\n");
406 #ifdef CONFIG_PCMCIA_PROBE
408 static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s)
410 struct socket_data *s_data = s->resource_data;
412 if (m == &s_data->mem_db)
414 ok = inv_probe(m->next, s);
416 if (m->base >= 0x100000)
417 sub_interval(&s_data->mem_db, m->base, m->num);
420 if (m->base < 0x100000)
422 return do_mem_probe(m->base, m->num, s);
425 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
427 struct resource_map *m, mm;
428 static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
429 unsigned long b, i, ok = 0;
430 struct socket_data *s_data = s->resource_data;
432 /* We do up to four passes through the list */
433 if (probe_mask & MEM_PROBE_HIGH) {
434 if (inv_probe(s_data->mem_db.next, s) > 0)
436 printk(KERN_NOTICE "cs: warning: no high memory space "
441 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
443 /* Only probe < 1 MB */
444 if (mm.base >= 0x100000)
446 if ((mm.base | mm.num) & 0xffff) {
447 ok += do_mem_probe(mm.base, mm.num, s);
450 /* Special probe for 64K-aligned block */
451 for (i = 0; i < 4; i++) {
453 if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
455 sub_interval(&s_data->mem_db, b, 0x10000);
457 ok += do_mem_probe(b, 0x10000, s);
468 #else /* CONFIG_PCMCIA_PROBE */
470 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
472 struct resource_map *m, mm;
473 struct socket_data *s_data = s->resource_data;
474 unsigned long ok = 0;
476 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
478 ok += do_mem_probe(mm.base, mm.num, s);
485 #endif /* CONFIG_PCMCIA_PROBE */
489 * Locking note: Must be called with skt_sem held!
491 static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
493 struct socket_data *s_data = s->resource_data;
494 unsigned int probe_mask = MEM_PROBE_LOW;
502 if (s->features & SS_CAP_PAGE_REGS)
503 probe_mask = MEM_PROBE_HIGH;
505 if (probe_mask & ~s_data->rsrc_mem_probe) {
506 if (s->state & SOCKET_PRESENT)
507 ret = validate_mem(s, probe_mask);
509 s_data->rsrc_mem_probe |= probe_mask;
517 struct pcmcia_align_data {
519 unsigned long offset;
520 struct resource_map *map;
524 pcmcia_common_align(void *align_data, struct resource *res,
525 unsigned long size, unsigned long align)
527 struct pcmcia_align_data *data = align_data;
530 * Ensure that we have the correct start address
532 start = (res->start & ~data->mask) + data->offset;
533 if (start < res->start)
534 start += data->mask + 1;
539 pcmcia_align(void *align_data, struct resource *res,
540 unsigned long size, unsigned long align)
542 struct pcmcia_align_data *data = align_data;
543 struct resource_map *m;
545 pcmcia_common_align(data, res, size, align);
547 for (m = data->map->next; m != data->map; m = m->next) {
548 unsigned long start = m->base;
549 unsigned long end = m->base + m->num - 1;
552 * If the lower resources are not available, try aligning
553 * to this entry of the resource database to see if it'll
556 if (res->start < start) {
558 pcmcia_common_align(data, res, size, align);
562 * If we're above the area which was passed in, there's
563 * no point proceeding.
565 if (res->start >= res->end)
568 if ((res->start + size - 1) <= end)
573 * If we failed to find something suitable, ensure we fail.
576 res->start = res->end;
580 * Adjust an existing IO region allocation, but making sure that we don't
581 * encroach outside the resources which the user supplied.
583 static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start,
584 unsigned long r_end, struct pcmcia_socket *s)
586 struct resource_map *m;
587 struct socket_data *s_data = s->resource_data;
591 for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) {
592 unsigned long start = m->base;
593 unsigned long end = m->base + m->num - 1;
595 if (start > r_start || r_end > end)
598 ret = adjust_resource(res, r_start, r_end - r_start + 1);
606 /*======================================================================
608 These find ranges of I/O ports or memory addresses that are not
609 currently allocated by other devices.
611 The 'align' field should reflect the number of bits of address
612 that need to be preserved from the initial value of *base. It
613 should be a power of two, greater than or equal to 'num'. A value
614 of 0 means that all bits of *base are significant. *base should
615 also be strictly less than 'align'.
617 ======================================================================*/
619 static struct resource *nonstatic_find_io_region(unsigned long base, int num,
620 unsigned long align, struct pcmcia_socket *s)
622 struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.class_id);
623 struct socket_data *s_data = s->resource_data;
624 struct pcmcia_align_data data;
625 unsigned long min = base;
631 data.mask = align - 1;
632 data.offset = base & data.mask;
633 data.map = &s_data->io_db;
638 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
639 min, 0, pcmcia_align, &data);
642 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
643 1, pcmcia_align, &data);
653 static struct resource * nonstatic_find_mem_region(u_long base, u_long num,
654 u_long align, int low, struct pcmcia_socket *s)
656 struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.class_id);
657 struct socket_data *s_data = s->resource_data;
658 struct pcmcia_align_data data;
659 unsigned long min, max;
662 low = low || !(s->features & SS_CAP_PAGE_REGS);
664 data.mask = align - 1;
665 data.offset = base & data.mask;
666 data.map = &s_data->mem_db;
668 for (i = 0; i < 2; i++) {
671 min = base < max ? base : 0;
674 min = 0x100000UL + base;
680 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num,
682 pcmcia_align, &data);
685 ret = allocate_resource(&iomem_resource, res, num, min,
686 max, 1, pcmcia_align, &data);
701 static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
703 struct socket_data *data = s->resource_data;
704 unsigned long size = end - start + 1;
712 case ADD_MANAGED_RESOURCE:
713 ret = add_interval(&data->mem_db, start, size);
715 case REMOVE_MANAGED_RESOURCE:
716 ret = sub_interval(&data->mem_db, start, size);
718 struct pcmcia_socket *socket;
719 down_read(&pcmcia_socket_list_rwsem);
720 list_for_each_entry(socket, &pcmcia_socket_list, socket_list)
721 release_cis_mem(socket);
722 up_read(&pcmcia_socket_list_rwsem);
734 static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
736 struct socket_data *data = s->resource_data;
737 unsigned long size = end - start + 1;
743 if (end > IO_SPACE_LIMIT)
748 case ADD_MANAGED_RESOURCE:
749 if (add_interval(&data->io_db, start, size) != 0) {
753 #ifdef CONFIG_PCMCIA_PROBE
755 do_io_probe(s, start, size);
758 case REMOVE_MANAGED_RESOURCE:
759 sub_interval(&data->io_db, start, size);
771 static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj)
775 switch (adj->Resource) {
776 case RES_MEMORY_RANGE:
777 end = adj->resource.memory.Base + adj->resource.memory.Size - 1;
778 return adjust_memory(s, adj->Action, adj->resource.memory.Base, end);
780 end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1;
781 return adjust_io(s, adj->Action, adj->resource.io.BasePort, end);
783 return CS_UNSUPPORTED_FUNCTION;
787 static int nonstatic_autoadd_resources(struct pcmcia_socket *s)
789 struct resource *res;
792 if (!s->cb_dev || !s->cb_dev->bus)
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.
802 if (s->cb_dev->bus->number == 0)
806 for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) {
807 res = s->cb_dev->bus->resource[i];
811 if (res->flags & IORESOURCE_IO) {
812 if (res == &ioport_resource)
814 printk(KERN_INFO "pcmcia: parent PCI bridge I/O window: 0x%lx - 0x%lx\n",
815 res->start, 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 window: 0x%lx - 0x%lx\n",
825 res->start, res->end);
826 if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end))
827 done |= IORESOURCE_MEM;
831 /* if we got at least one of IO, and one of MEM, we can be glad and
832 * activate the PCMCIA subsystem */
833 if (done == (IORESOURCE_MEM | IORESOURCE_IO))
834 s->resource_setup_done = 1;
841 static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s)
849 static int nonstatic_init(struct pcmcia_socket *s)
851 struct socket_data *data;
853 data = kmalloc(sizeof(struct socket_data), GFP_KERNEL);
856 memset(data, 0, sizeof(struct socket_data));
858 data->mem_db.next = &data->mem_db;
859 data->io_db.next = &data->io_db;
861 s->resource_data = (void *) data;
863 nonstatic_autoadd_resources(s);
868 static void nonstatic_release_resource_db(struct pcmcia_socket *s)
870 struct socket_data *data = s->resource_data;
871 struct resource_map *p, *q;
874 for (p = data->mem_db.next; p != &data->mem_db; p = q) {
878 for (p = data->io_db.next; p != &data->io_db; p = q) {
886 struct pccard_resource_ops pccard_nonstatic_ops = {
887 .validate_mem = pcmcia_nonstatic_validate_mem,
888 .adjust_io_region = nonstatic_adjust_io_region,
889 .find_io = nonstatic_find_io_region,
890 .find_mem = nonstatic_find_mem_region,
891 .adjust_resource = nonstatic_adjust_resource_info,
892 .init = nonstatic_init,
893 .exit = nonstatic_release_resource_db,
895 EXPORT_SYMBOL(pccard_nonstatic_ops);
898 /* sysfs interface to the resource database */
900 static ssize_t show_io_db(struct class_device *class_dev, char *buf)
902 struct pcmcia_socket *s = class_get_devdata(class_dev);
903 struct socket_data *data;
904 struct resource_map *p;
908 data = s->resource_data;
910 for (p = data->io_db.next; p != &data->io_db; p = p->next) {
911 if (ret > (PAGE_SIZE - 10))
913 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
914 "0x%08lx - 0x%08lx\n",
915 ((unsigned long) p->base),
916 ((unsigned long) p->base + p->num - 1));
923 static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size_t count)
925 struct pcmcia_socket *s = class_get_devdata(class_dev);
926 unsigned long start_addr, end_addr;
927 unsigned int add = ADD_MANAGED_RESOURCE;
930 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
932 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
933 add = REMOVE_MANAGED_RESOURCE;
935 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
936 add = ADD_MANAGED_RESOURCE;
941 if (end_addr < start_addr)
944 ret = adjust_io(s, add, start_addr, end_addr);
946 s->resource_setup_new = 1;
948 return ret ? ret : count;
950 static CLASS_DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db);
952 static ssize_t show_mem_db(struct class_device *class_dev, char *buf)
954 struct pcmcia_socket *s = class_get_devdata(class_dev);
955 struct socket_data *data;
956 struct resource_map *p;
960 data = s->resource_data;
962 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) {
963 if (ret > (PAGE_SIZE - 10))
965 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
966 "0x%08lx - 0x%08lx\n",
967 ((unsigned long) p->base),
968 ((unsigned long) p->base + p->num - 1));
975 static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, size_t count)
977 struct pcmcia_socket *s = class_get_devdata(class_dev);
978 unsigned long start_addr, end_addr;
979 unsigned int add = ADD_MANAGED_RESOURCE;
982 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
984 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
985 add = REMOVE_MANAGED_RESOURCE;
987 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
988 add = ADD_MANAGED_RESOURCE;
993 if (end_addr < start_addr)
996 ret = adjust_memory(s, add, start_addr, end_addr);
998 s->resource_setup_new = 1;
1000 return ret ? ret : count;
1002 static CLASS_DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db);
1004 static struct class_device_attribute *pccard_rsrc_attributes[] = {
1005 &class_device_attr_available_resources_io,
1006 &class_device_attr_available_resources_mem,
1010 static int __devinit pccard_sysfs_add_rsrc(struct class_device *class_dev,
1011 struct class_interface *class_intf)
1013 struct pcmcia_socket *s = class_get_devdata(class_dev);
1014 struct class_device_attribute **attr;
1016 if (s->resource_ops != &pccard_nonstatic_ops)
1019 for (attr = pccard_rsrc_attributes; *attr; attr++) {
1020 ret = class_device_create_file(class_dev, *attr);
1028 static void __devexit pccard_sysfs_remove_rsrc(struct class_device *class_dev,
1029 struct class_interface *class_intf)
1031 struct pcmcia_socket *s = class_get_devdata(class_dev);
1032 struct class_device_attribute **attr;
1034 if (s->resource_ops != &pccard_nonstatic_ops)
1037 for (attr = pccard_rsrc_attributes; *attr; attr++)
1038 class_device_remove_file(class_dev, *attr);
1041 static struct class_interface pccard_rsrc_interface = {
1042 .class = &pcmcia_socket_class,
1043 .add = &pccard_sysfs_add_rsrc,
1044 .remove = __devexit_p(&pccard_sysfs_remove_rsrc),
1047 static int __init nonstatic_sysfs_init(void)
1049 return class_interface_register(&pccard_rsrc_interface);
1052 static void __exit nonstatic_sysfs_exit(void)
1054 class_interface_unregister(&pccard_rsrc_interface);
1057 module_init(nonstatic_sysfs_init);
1058 module_exit(nonstatic_sysfs_exit);