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 = kzalloc(sizeof(*res), GFP_KERNEL);
89 static struct resource *
90 claim_region(struct pcmcia_socket *s, unsigned long base, unsigned long size,
93 struct resource *res, *parent;
95 parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource;
96 res = make_resource(base, size, type | IORESOURCE_BUSY, name);
101 parent = pci_find_parent_resource(s->cb_dev, res);
103 if (!parent || request_resource(parent, res)) {
111 static void free_region(struct resource *res)
114 release_resource(res);
119 /*======================================================================
121 These manage the internal databases of available resources.
123 ======================================================================*/
125 static int add_interval(struct resource_map *map, u_long base, u_long num)
127 struct resource_map *p, *q;
129 for (p = map; ; p = p->next) {
130 if ((p != map) && (p->base+p->num-1 >= base))
132 if ((p->next == map) || (p->next->base > base+num-1))
135 q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
136 if (!q) return CS_OUT_OF_RESOURCE;
137 q->base = base; q->num = num;
138 q->next = p->next; p->next = q;
142 /*====================================================================*/
144 static int sub_interval(struct resource_map *map, u_long base, u_long num)
146 struct resource_map *p, *q;
148 for (p = map; ; p = q) {
152 if ((q->base+q->num > base) && (base+num > q->base)) {
153 if (q->base >= base) {
154 if (q->base+q->num <= base+num) {
155 /* Delete whole block */
158 /* don't advance the pointer yet */
161 /* Cut off bit from the front */
162 q->num = q->base + q->num - base - num;
163 q->base = base + num;
165 } else if (q->base+q->num <= base+num) {
166 /* Cut off bit from the end */
167 q->num = base - q->base;
169 /* Split the block into two pieces */
170 p = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
171 if (!p) return CS_OUT_OF_RESOURCE;
173 p->num = q->base+q->num - p->base;
174 q->num = base - q->base;
175 p->next = q->next ; q->next = p;
182 /*======================================================================
184 These routines examine a region of IO or memory addresses to
185 determine what ranges might be genuinely available.
187 ======================================================================*/
189 #ifdef CONFIG_PCMCIA_PROBE
190 static void do_io_probe(struct pcmcia_socket *s, kio_addr_t base, kio_addr_t num)
192 struct resource *res;
193 struct socket_data *s_data = s->resource_data;
194 kio_addr_t i, j, bad;
196 u_char *b, hole, most;
198 printk(KERN_INFO "cs: IO port probe %#lx-%#lx:",
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(" %#lx-%#lx", 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(" %#lx-%#lx", 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_sem 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;
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;
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 unsigned long size, unsigned long align)
525 struct pcmcia_align_data *data = align_data;
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,
538 unsigned long size, unsigned long 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;
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);
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.class_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;
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);
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.class_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;
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);
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;
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);
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)
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);
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 window: 0x%lx - 0x%lx\n",
813 res->start, res->end);
814 if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end))
815 done |= IORESOURCE_IO;
819 if (res->flags & IORESOURCE_MEM) {
820 if (res == &iomem_resource)
822 printk(KERN_INFO "pcmcia: parent PCI bridge Memory window: 0x%lx - 0x%lx\n",
823 res->start, res->end);
824 if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end))
825 done |= IORESOURCE_MEM;
829 /* if we got at least one of IO, and one of MEM, we can be glad and
830 * activate the PCMCIA subsystem */
831 if (done == (IORESOURCE_MEM | IORESOURCE_IO))
832 s->resource_setup_done = 1;
839 static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s)
847 static int nonstatic_init(struct pcmcia_socket *s)
849 struct socket_data *data;
851 data = kzalloc(sizeof(struct socket_data), GFP_KERNEL);
855 data->mem_db.next = &data->mem_db;
856 data->io_db.next = &data->io_db;
858 s->resource_data = (void *) data;
860 nonstatic_autoadd_resources(s);
865 static void nonstatic_release_resource_db(struct pcmcia_socket *s)
867 struct socket_data *data = s->resource_data;
868 struct resource_map *p, *q;
871 for (p = data->mem_db.next; p != &data->mem_db; p = q) {
875 for (p = data->io_db.next; p != &data->io_db; p = q) {
883 struct pccard_resource_ops pccard_nonstatic_ops = {
884 .validate_mem = pcmcia_nonstatic_validate_mem,
885 .adjust_io_region = nonstatic_adjust_io_region,
886 .find_io = nonstatic_find_io_region,
887 .find_mem = nonstatic_find_mem_region,
888 .adjust_resource = nonstatic_adjust_resource_info,
889 .init = nonstatic_init,
890 .exit = nonstatic_release_resource_db,
892 EXPORT_SYMBOL(pccard_nonstatic_ops);
895 /* sysfs interface to the resource database */
897 static ssize_t show_io_db(struct class_device *class_dev, char *buf)
899 struct pcmcia_socket *s = class_get_devdata(class_dev);
900 struct socket_data *data;
901 struct resource_map *p;
905 data = s->resource_data;
907 for (p = data->io_db.next; p != &data->io_db; p = p->next) {
908 if (ret > (PAGE_SIZE - 10))
910 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
911 "0x%08lx - 0x%08lx\n",
912 ((unsigned long) p->base),
913 ((unsigned long) p->base + p->num - 1));
920 static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size_t count)
922 struct pcmcia_socket *s = class_get_devdata(class_dev);
923 unsigned long start_addr, end_addr;
924 unsigned int add = ADD_MANAGED_RESOURCE;
927 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
929 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
930 add = REMOVE_MANAGED_RESOURCE;
932 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
933 add = ADD_MANAGED_RESOURCE;
938 if (end_addr < start_addr)
941 ret = adjust_io(s, add, start_addr, end_addr);
943 s->resource_setup_new = 1;
945 return ret ? ret : count;
947 static CLASS_DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db);
949 static ssize_t show_mem_db(struct class_device *class_dev, char *buf)
951 struct pcmcia_socket *s = class_get_devdata(class_dev);
952 struct socket_data *data;
953 struct resource_map *p;
957 data = s->resource_data;
959 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) {
960 if (ret > (PAGE_SIZE - 10))
962 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
963 "0x%08lx - 0x%08lx\n",
964 ((unsigned long) p->base),
965 ((unsigned long) p->base + p->num - 1));
972 static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, size_t count)
974 struct pcmcia_socket *s = class_get_devdata(class_dev);
975 unsigned long start_addr, end_addr;
976 unsigned int add = ADD_MANAGED_RESOURCE;
979 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
981 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
982 add = REMOVE_MANAGED_RESOURCE;
984 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
985 add = ADD_MANAGED_RESOURCE;
990 if (end_addr < start_addr)
993 ret = adjust_memory(s, add, start_addr, end_addr);
995 s->resource_setup_new = 1;
997 return ret ? ret : count;
999 static CLASS_DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db);
1001 static struct class_device_attribute *pccard_rsrc_attributes[] = {
1002 &class_device_attr_available_resources_io,
1003 &class_device_attr_available_resources_mem,
1007 static int __devinit pccard_sysfs_add_rsrc(struct class_device *class_dev,
1008 struct class_interface *class_intf)
1010 struct pcmcia_socket *s = class_get_devdata(class_dev);
1011 struct class_device_attribute **attr;
1013 if (s->resource_ops != &pccard_nonstatic_ops)
1016 for (attr = pccard_rsrc_attributes; *attr; attr++) {
1017 ret = class_device_create_file(class_dev, *attr);
1025 static void __devexit pccard_sysfs_remove_rsrc(struct class_device *class_dev,
1026 struct class_interface *class_intf)
1028 struct pcmcia_socket *s = class_get_devdata(class_dev);
1029 struct class_device_attribute **attr;
1031 if (s->resource_ops != &pccard_nonstatic_ops)
1034 for (attr = pccard_rsrc_attributes; *attr; attr++)
1035 class_device_remove_file(class_dev, *attr);
1038 static struct class_interface pccard_rsrc_interface = {
1039 .class = &pcmcia_socket_class,
1040 .add = &pccard_sysfs_add_rsrc,
1041 .remove = __devexit_p(&pccard_sysfs_remove_rsrc),
1044 static int __init nonstatic_sysfs_init(void)
1046 return class_interface_register(&pccard_rsrc_interface);
1049 static void __exit nonstatic_sysfs_exit(void)
1051 class_interface_unregister(&pccard_rsrc_interface);
1054 module_init(nonstatic_sysfs_init);
1055 module_exit(nonstatic_sysfs_exit);