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 void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
427 struct resource_map *m, mm;
428 static u_char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
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 "
439 if ((probe_mask & MEM_PROBE_LOW) == 0)
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) continue;
445 if ((mm.base | mm.num) & 0xffff) {
446 ok += do_mem_probe(mm.base, mm.num, s);
449 /* Special probe for 64K-aligned block */
450 for (i = 0; i < 4; i++) {
452 if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
454 sub_interval(&s_data->mem_db, b, 0x10000);
456 ok += do_mem_probe(b, 0x10000, s);
462 #else /* CONFIG_PCMCIA_PROBE */
464 static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
466 struct resource_map *m, mm;
467 struct socket_data *s_data = s->resource_data;
469 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
471 do_mem_probe(mm.base, mm.num, s);
475 #endif /* CONFIG_PCMCIA_PROBE */
479 * Locking note: Must be called with skt_sem held!
481 static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
483 struct socket_data *s_data = s->resource_data;
485 unsigned int probe_mask;
489 probe_mask = MEM_PROBE_LOW;
490 if (s->features & SS_CAP_PAGE_REGS)
491 probe_mask = MEM_PROBE_HIGH;
493 if (probe_mask & ~s_data->rsrc_mem_probe) {
494 s_data->rsrc_mem_probe |= probe_mask;
496 if (s->state & SOCKET_PRESENT)
497 validate_mem(s, probe_mask);
504 struct pcmcia_align_data {
506 unsigned long offset;
507 struct resource_map *map;
511 pcmcia_common_align(void *align_data, struct resource *res,
512 unsigned long size, unsigned long align)
514 struct pcmcia_align_data *data = align_data;
517 * Ensure that we have the correct start address
519 start = (res->start & ~data->mask) + data->offset;
520 if (start < res->start)
521 start += data->mask + 1;
526 pcmcia_align(void *align_data, struct resource *res,
527 unsigned long size, unsigned long align)
529 struct pcmcia_align_data *data = align_data;
530 struct resource_map *m;
532 pcmcia_common_align(data, res, size, align);
534 for (m = data->map->next; m != data->map; m = m->next) {
535 unsigned long start = m->base;
536 unsigned long end = m->base + m->num - 1;
539 * If the lower resources are not available, try aligning
540 * to this entry of the resource database to see if it'll
543 if (res->start < start) {
545 pcmcia_common_align(data, res, size, align);
549 * If we're above the area which was passed in, there's
550 * no point proceeding.
552 if (res->start >= res->end)
555 if ((res->start + size - 1) <= end)
560 * If we failed to find something suitable, ensure we fail.
563 res->start = res->end;
567 * Adjust an existing IO region allocation, but making sure that we don't
568 * encroach outside the resources which the user supplied.
570 static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start,
571 unsigned long r_end, struct pcmcia_socket *s)
573 struct resource_map *m;
574 struct socket_data *s_data = s->resource_data;
578 for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) {
579 unsigned long start = m->base;
580 unsigned long end = m->base + m->num - 1;
582 if (start > r_start || r_end > end)
585 ret = adjust_resource(res, r_start, r_end - r_start + 1);
593 /*======================================================================
595 These find ranges of I/O ports or memory addresses that are not
596 currently allocated by other devices.
598 The 'align' field should reflect the number of bits of address
599 that need to be preserved from the initial value of *base. It
600 should be a power of two, greater than or equal to 'num'. A value
601 of 0 means that all bits of *base are significant. *base should
602 also be strictly less than 'align'.
604 ======================================================================*/
606 static struct resource *nonstatic_find_io_region(unsigned long base, int num,
607 unsigned long align, struct pcmcia_socket *s)
609 struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.class_id);
610 struct socket_data *s_data = s->resource_data;
611 struct pcmcia_align_data data;
612 unsigned long min = base;
618 data.mask = align - 1;
619 data.offset = base & data.mask;
620 data.map = &s_data->io_db;
625 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
626 min, 0, pcmcia_align, &data);
629 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
630 1, pcmcia_align, &data);
640 static struct resource * nonstatic_find_mem_region(u_long base, u_long num,
641 u_long align, int low, struct pcmcia_socket *s)
643 struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.class_id);
644 struct socket_data *s_data = s->resource_data;
645 struct pcmcia_align_data data;
646 unsigned long min, max;
649 low = low || !(s->features & SS_CAP_PAGE_REGS);
651 data.mask = align - 1;
652 data.offset = base & data.mask;
653 data.map = &s_data->mem_db;
655 for (i = 0; i < 2; i++) {
658 min = base < max ? base : 0;
661 min = 0x100000UL + base;
667 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num,
669 pcmcia_align, &data);
672 ret = allocate_resource(&iomem_resource, res, num, min,
673 max, 1, pcmcia_align, &data);
688 static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
690 struct socket_data *data = s->resource_data;
691 unsigned long size = end - start + 1;
699 case ADD_MANAGED_RESOURCE:
700 ret = add_interval(&data->mem_db, start, size);
702 case REMOVE_MANAGED_RESOURCE:
703 ret = sub_interval(&data->mem_db, start, size);
705 struct pcmcia_socket *socket;
706 down_read(&pcmcia_socket_list_rwsem);
707 list_for_each_entry(socket, &pcmcia_socket_list, socket_list)
708 release_cis_mem(socket);
709 up_read(&pcmcia_socket_list_rwsem);
721 static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end)
723 struct socket_data *data = s->resource_data;
724 unsigned long size = end - start + 1;
730 if (end > IO_SPACE_LIMIT)
735 case ADD_MANAGED_RESOURCE:
736 if (add_interval(&data->io_db, start, size) != 0) {
740 #ifdef CONFIG_PCMCIA_PROBE
742 do_io_probe(s, start, size);
745 case REMOVE_MANAGED_RESOURCE:
746 sub_interval(&data->io_db, start, size);
758 static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj)
762 switch (adj->Resource) {
763 case RES_MEMORY_RANGE:
764 end = adj->resource.memory.Base + adj->resource.memory.Size - 1;
765 return adjust_memory(s, adj->Action, adj->resource.memory.Base, end);
767 end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1;
768 return adjust_io(s, adj->Action, adj->resource.io.BasePort, end);
770 return CS_UNSUPPORTED_FUNCTION;
774 static int nonstatic_autoadd_resources(struct pcmcia_socket *s)
776 struct resource *res;
779 if (!s->cb_dev || !s->cb_dev->bus)
782 #if defined(CONFIG_X86)
783 /* If this is the root bus, the risk of hitting
784 * some strange system devices which aren't protected
785 * by either ACPI resource tables or properly requested
786 * resources is too big. Therefore, don't do auto-adding
787 * of resources at the moment.
789 if (s->cb_dev->bus->number == 0)
793 for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) {
794 res = s->cb_dev->bus->resource[i];
798 if (res->flags & IORESOURCE_IO) {
799 if (res == &ioport_resource)
801 printk(KERN_INFO "pcmcia: parent PCI bridge I/O window: 0x%lx - 0x%lx\n",
802 res->start, res->end);
803 if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end))
804 done |= IORESOURCE_IO;
808 if (res->flags & IORESOURCE_MEM) {
809 if (res == &iomem_resource)
811 printk(KERN_INFO "pcmcia: parent PCI bridge Memory window: 0x%lx - 0x%lx\n",
812 res->start, 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 = kmalloc(sizeof(struct socket_data), GFP_KERNEL);
843 memset(data, 0, sizeof(struct socket_data));
845 data->mem_db.next = &data->mem_db;
846 data->io_db.next = &data->io_db;
848 s->resource_data = (void *) data;
850 nonstatic_autoadd_resources(s);
855 static void nonstatic_release_resource_db(struct pcmcia_socket *s)
857 struct socket_data *data = s->resource_data;
858 struct resource_map *p, *q;
861 for (p = data->mem_db.next; p != &data->mem_db; p = q) {
865 for (p = data->io_db.next; p != &data->io_db; p = q) {
873 struct pccard_resource_ops pccard_nonstatic_ops = {
874 .validate_mem = pcmcia_nonstatic_validate_mem,
875 .adjust_io_region = nonstatic_adjust_io_region,
876 .find_io = nonstatic_find_io_region,
877 .find_mem = nonstatic_find_mem_region,
878 .adjust_resource = nonstatic_adjust_resource_info,
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 class_device *class_dev, char *buf)
889 struct pcmcia_socket *s = class_get_devdata(class_dev);
890 struct socket_data *data;
891 struct resource_map *p;
895 data = s->resource_data;
897 for (p = data->io_db.next; p != &data->io_db; p = p->next) {
898 if (ret > (PAGE_SIZE - 10))
900 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
901 "0x%08lx - 0x%08lx\n",
902 ((unsigned long) p->base),
903 ((unsigned long) p->base + p->num - 1));
910 static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size_t count)
912 struct pcmcia_socket *s = class_get_devdata(class_dev);
913 unsigned long start_addr, end_addr;
914 unsigned int add = ADD_MANAGED_RESOURCE;
917 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
919 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
920 add = REMOVE_MANAGED_RESOURCE;
922 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
923 add = ADD_MANAGED_RESOURCE;
928 if (end_addr < start_addr)
931 ret = adjust_io(s, add, start_addr, end_addr);
933 s->resource_setup_new = 1;
935 return ret ? ret : count;
937 static CLASS_DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db);
939 static ssize_t show_mem_db(struct class_device *class_dev, char *buf)
941 struct pcmcia_socket *s = class_get_devdata(class_dev);
942 struct socket_data *data;
943 struct resource_map *p;
947 data = s->resource_data;
949 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) {
950 if (ret > (PAGE_SIZE - 10))
952 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
953 "0x%08lx - 0x%08lx\n",
954 ((unsigned long) p->base),
955 ((unsigned long) p->base + p->num - 1));
962 static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, size_t count)
964 struct pcmcia_socket *s = class_get_devdata(class_dev);
965 unsigned long start_addr, end_addr;
966 unsigned int add = ADD_MANAGED_RESOURCE;
969 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
971 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
972 add = REMOVE_MANAGED_RESOURCE;
974 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
975 add = ADD_MANAGED_RESOURCE;
980 if (end_addr < start_addr)
983 ret = adjust_memory(s, add, start_addr, end_addr);
985 s->resource_setup_new = 1;
987 return ret ? ret : count;
989 static CLASS_DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db);
991 static struct class_device_attribute *pccard_rsrc_attributes[] = {
992 &class_device_attr_available_resources_io,
993 &class_device_attr_available_resources_mem,
997 static int __devinit pccard_sysfs_add_rsrc(struct class_device *class_dev,
998 struct class_interface *class_intf)
1000 struct pcmcia_socket *s = class_get_devdata(class_dev);
1001 struct class_device_attribute **attr;
1003 if (s->resource_ops != &pccard_nonstatic_ops)
1006 for (attr = pccard_rsrc_attributes; *attr; attr++) {
1007 ret = class_device_create_file(class_dev, *attr);
1015 static void __devexit pccard_sysfs_remove_rsrc(struct class_device *class_dev,
1016 struct class_interface *class_intf)
1018 struct pcmcia_socket *s = class_get_devdata(class_dev);
1019 struct class_device_attribute **attr;
1021 if (s->resource_ops != &pccard_nonstatic_ops)
1024 for (attr = pccard_rsrc_attributes; *attr; attr++)
1025 class_device_remove_file(class_dev, *attr);
1028 static struct class_interface pccard_rsrc_interface = {
1029 .class = &pcmcia_socket_class,
1030 .add = &pccard_sysfs_add_rsrc,
1031 .remove = __devexit_p(&pccard_sysfs_remove_rsrc),
1034 static int __init nonstatic_sysfs_init(void)
1036 return class_interface_register(&pccard_rsrc_interface);
1039 static void __exit nonstatic_sysfs_exit(void)
1041 class_interface_unregister(&pccard_rsrc_interface);
1044 module_init(nonstatic_sysfs_init);
1045 module_exit(nonstatic_sysfs_exit);