Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
new file mode 100644
index 0000000..5876bab
--- /dev/null
+++ b/drivers/pcmcia/rsrc_nonstatic.c
@@ -0,0 +1,985 @@
+/*
+ * rsrc_nonstatic.c -- Resource management routines for !SS_CAP_STATIC_MAP sockets
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ * (C) 1999 David A. Hinds
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/timer.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+
+#include <asm/irq.h>
+#include <asm/io.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/bulkmem.h>
+#include <pcmcia/cistpl.h>
+#include "cs_internal.h"
+
+MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
+MODULE_LICENSE("GPL");
+
+/* Parameters that can be set with 'insmod' */
+
+#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
+
+INT_MODULE_PARM(probe_mem, 1); /* memory probe? */
+#ifdef CONFIG_PCMCIA_PROBE
+INT_MODULE_PARM(probe_io, 1); /* IO port probe? */
+INT_MODULE_PARM(mem_limit, 0x10000);
+#endif
+
+/* for io_db and mem_db */
+struct resource_map {
+ u_long base, num;
+ struct resource_map *next;
+};
+
+struct socket_data {
+ struct resource_map mem_db;
+ struct resource_map io_db;
+ unsigned int rsrc_mem_probe;
+};
+
+static DECLARE_MUTEX(rsrc_sem);
+#define MEM_PROBE_LOW (1 << 0)
+#define MEM_PROBE_HIGH (1 << 1)
+
+
+/*======================================================================
+
+ Linux resource management extensions
+
+======================================================================*/
+
+static struct resource *
+make_resource(unsigned long b, unsigned long n, int flags, char *name)
+{
+ struct resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
+
+ if (res) {
+ memset(res, 0, sizeof(*res));
+ res->name = name;
+ res->start = b;
+ res->end = b + n - 1;
+ res->flags = flags;
+ }
+ return res;
+}
+
+static struct resource *
+claim_region(struct pcmcia_socket *s, unsigned long base, unsigned long size,
+ int type, char *name)
+{
+ struct resource *res, *parent;
+
+ parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource;
+ res = make_resource(base, size, type | IORESOURCE_BUSY, name);
+
+ if (res) {
+#ifdef CONFIG_PCI
+ if (s && s->cb_dev)
+ parent = pci_find_parent_resource(s->cb_dev, res);
+#endif
+ if (!parent || request_resource(parent, res)) {
+ kfree(res);
+ res = NULL;
+ }
+ }
+ return res;
+}
+
+static void free_region(struct resource *res)
+{
+ if (res) {
+ release_resource(res);
+ kfree(res);
+ }
+}
+
+/*======================================================================
+
+ These manage the internal databases of available resources.
+
+======================================================================*/
+
+static int add_interval(struct resource_map *map, u_long base, u_long num)
+{
+ struct resource_map *p, *q;
+
+ for (p = map; ; p = p->next) {
+ if ((p != map) && (p->base+p->num-1 >= base))
+ return -1;
+ if ((p->next == map) || (p->next->base > base+num-1))
+ break;
+ }
+ q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
+ if (!q) return CS_OUT_OF_RESOURCE;
+ q->base = base; q->num = num;
+ q->next = p->next; p->next = q;
+ return CS_SUCCESS;
+}
+
+/*====================================================================*/
+
+static int sub_interval(struct resource_map *map, u_long base, u_long num)
+{
+ struct resource_map *p, *q;
+
+ for (p = map; ; p = q) {
+ q = p->next;
+ if (q == map)
+ break;
+ if ((q->base+q->num > base) && (base+num > q->base)) {
+ if (q->base >= base) {
+ if (q->base+q->num <= base+num) {
+ /* Delete whole block */
+ p->next = q->next;
+ kfree(q);
+ /* don't advance the pointer yet */
+ q = p;
+ } else {
+ /* Cut off bit from the front */
+ q->num = q->base + q->num - base - num;
+ q->base = base + num;
+ }
+ } else if (q->base+q->num <= base+num) {
+ /* Cut off bit from the end */
+ q->num = base - q->base;
+ } else {
+ /* Split the block into two pieces */
+ p = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
+ if (!p) return CS_OUT_OF_RESOURCE;
+ p->base = base+num;
+ p->num = q->base+q->num - p->base;
+ q->num = base - q->base;
+ p->next = q->next ; q->next = p;
+ }
+ }
+ }
+ return CS_SUCCESS;
+}
+
+/*======================================================================
+
+ These routines examine a region of IO or memory addresses to
+ determine what ranges might be genuinely available.
+
+======================================================================*/
+
+#ifdef CONFIG_PCMCIA_PROBE
+static void do_io_probe(struct pcmcia_socket *s, kio_addr_t base, kio_addr_t num)
+{
+ struct resource *res;
+ struct socket_data *s_data = s->resource_data;
+ kio_addr_t i, j, bad;
+ int any;
+ u_char *b, hole, most;
+
+ printk(KERN_INFO "cs: IO port probe %#lx-%#lx:",
+ base, base+num-1);
+
+ /* First, what does a floating port look like? */
+ b = kmalloc(256, GFP_KERNEL);
+ if (!b) {
+ printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes");
+ return;
+ }
+ memset(b, 0, 256);
+ for (i = base, most = 0; i < base+num; i += 8) {
+ res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
+ if (!res)
+ continue;
+ hole = inb(i);
+ for (j = 1; j < 8; j++)
+ if (inb(i+j) != hole) break;
+ free_region(res);
+ if ((j == 8) && (++b[hole] > b[most]))
+ most = hole;
+ if (b[most] == 127) break;
+ }
+ kfree(b);
+
+ bad = any = 0;
+ for (i = base; i < base+num; i += 8) {
+ res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
+ if (!res)
+ continue;
+ for (j = 0; j < 8; j++)
+ if (inb(i+j) != most) break;
+ free_region(res);
+ if (j < 8) {
+ if (!any)
+ printk(" excluding");
+ if (!bad)
+ bad = any = i;
+ } else {
+ if (bad) {
+ sub_interval(&s_data->io_db, bad, i-bad);
+ printk(" %#lx-%#lx", bad, i-1);
+ bad = 0;
+ }
+ }
+ }
+ if (bad) {
+ if ((num > 16) && (bad == base) && (i == base+num)) {
+ printk(" nothing: probe failed.\n");
+ return;
+ } else {
+ sub_interval(&s_data->io_db, bad, i-bad);
+ printk(" %#lx-%#lx", bad, i-1);
+ }
+ }
+
+ printk(any ? "\n" : " clean.\n");
+}
+#endif
+
+/*======================================================================
+
+ This is tricky... when we set up CIS memory, we try to validate
+ the memory window space allocations.
+
+======================================================================*/
+
+/* Validation function for cards with a valid CIS */
+static int readable(struct pcmcia_socket *s, struct resource *res, cisinfo_t *info)
+{
+ int ret = -1;
+
+ s->cis_mem.res = res;
+ s->cis_virt = ioremap(res->start, s->map_size);
+ if (s->cis_virt) {
+ ret = pccard_validate_cis(s, BIND_FN_ALL, info);
+ /* invalidate mapping and CIS cache */
+ iounmap(s->cis_virt);
+ s->cis_virt = NULL;
+ destroy_cis_cache(s);
+ }
+ s->cis_mem.res = NULL;
+ if ((ret != 0) || (info->Chains == 0))
+ return 0;
+ return 1;
+}
+
+/* Validation function for simple memory cards */
+static int checksum(struct pcmcia_socket *s, struct resource *res)
+{
+ pccard_mem_map map;
+ int i, a = 0, b = -1, d;
+ void __iomem *virt;
+
+ virt = ioremap(res->start, s->map_size);
+ if (virt) {
+ map.map = 0;
+ map.flags = MAP_ACTIVE;
+ map.speed = 0;
+ map.res = res;
+ map.card_start = 0;
+ s->ops->set_mem_map(s, &map);
+
+ /* Don't bother checking every word... */
+ for (i = 0; i < s->map_size; i += 44) {
+ d = readl(virt+i);
+ a += d;
+ b &= d;
+ }
+
+ map.flags = 0;
+ s->ops->set_mem_map(s, &map);
+
+ iounmap(virt);
+ }
+
+ return (b == -1) ? -1 : (a>>1);
+}
+
+static int
+cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size)
+{
+ struct resource *res1, *res2;
+ cisinfo_t info1, info2;
+ int ret = 0;
+
+ res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe");
+ res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe");
+
+ if (res1 && res2) {
+ ret = readable(s, res1, &info1);
+ ret += readable(s, res2, &info2);
+ }
+
+ free_region(res2);
+ free_region(res1);
+
+ return (ret == 2) && (info1.Chains == info2.Chains);
+}
+
+static int
+checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size)
+{
+ struct resource *res1, *res2;
+ int a = -1, b = -1;
+
+ res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe");
+ res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe");
+
+ if (res1 && res2) {
+ a = checksum(s, res1);
+ b = checksum(s, res2);
+ }
+
+ free_region(res2);
+ free_region(res1);
+
+ return (a == b) && (a >= 0);
+}
+
+/*======================================================================
+
+ The memory probe. If the memory list includes a 64K-aligned block
+ below 1MB, we probe in 64K chunks, and as soon as we accumulate at
+ least mem_limit free space, we quit.
+
+======================================================================*/
+
+static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
+{
+ struct socket_data *s_data = s->resource_data;
+ u_long i, j, bad, fail, step;
+
+ printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:",
+ base, base+num-1);
+ bad = fail = 0;
+ step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff);
+ /* cis_readable wants to map 2x map_size */
+ if (step < 2 * s->map_size)
+ step = 2 * s->map_size;
+ for (i = j = base; i < base+num; i = j + step) {
+ if (!fail) {
+ for (j = i; j < base+num; j += step) {
+ if (cis_readable(s, j, step))
+ break;
+ }
+ fail = ((i == base) && (j == base+num));
+ }
+ if (fail) {
+ for (j = i; j < base+num; j += 2*step)
+ if (checksum_match(s, j, step) &&
+ checksum_match(s, j + step, step))
+ break;
+ }
+ if (i != j) {
+ if (!bad) printk(" excluding");
+ printk(" %#05lx-%#05lx", i, j-1);
+ sub_interval(&s_data->mem_db, i, j-i);
+ bad += j-i;
+ }
+ }
+ printk(bad ? "\n" : " clean.\n");
+ return (num - bad);
+}
+
+#ifdef CONFIG_PCMCIA_PROBE
+
+static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s)
+{
+ struct socket_data *s_data = s->resource_data;
+ u_long ok;
+ if (m == &s_data->mem_db)
+ return 0;
+ ok = inv_probe(m->next, s);
+ if (ok) {
+ if (m->base >= 0x100000)
+ sub_interval(&s_data->mem_db, m->base, m->num);
+ return ok;
+ }
+ if (m->base < 0x100000)
+ return 0;
+ return do_mem_probe(m->base, m->num, s);
+}
+
+static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
+{
+ struct resource_map *m, mm;
+ static u_char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
+ u_long b, i, ok = 0;
+ struct socket_data *s_data = s->resource_data;
+
+ /* We do up to four passes through the list */
+ if (probe_mask & MEM_PROBE_HIGH) {
+ if (inv_probe(s_data->mem_db.next, s) > 0)
+ return;
+ printk(KERN_NOTICE "cs: warning: no high memory space "
+ "available!\n");
+ }
+ if ((probe_mask & MEM_PROBE_LOW) == 0)
+ return;
+ for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
+ mm = *m;
+ /* Only probe < 1 MB */
+ if (mm.base >= 0x100000) continue;
+ if ((mm.base | mm.num) & 0xffff) {
+ ok += do_mem_probe(mm.base, mm.num, s);
+ continue;
+ }
+ /* Special probe for 64K-aligned block */
+ for (i = 0; i < 4; i++) {
+ b = order[i] << 12;
+ if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
+ if (ok >= mem_limit)
+ sub_interval(&s_data->mem_db, b, 0x10000);
+ else
+ ok += do_mem_probe(b, 0x10000, s);
+ }
+ }
+ }
+}
+
+#else /* CONFIG_PCMCIA_PROBE */
+
+static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
+{
+ struct resource_map *m, mm;
+ struct socket_data *s_data = s->resource_data;
+
+ for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
+ mm = *m;
+ if (do_mem_probe(mm.base, mm.num, s))
+ break;
+ }
+}
+
+#endif /* CONFIG_PCMCIA_PROBE */
+
+
+/*
+ * Locking note: Must be called with skt_sem held!
+ */
+static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
+{
+ struct socket_data *s_data = s->resource_data;
+ if (probe_mem) {
+ unsigned int probe_mask;
+
+ down(&rsrc_sem);
+
+ probe_mask = MEM_PROBE_LOW;
+ if (s->features & SS_CAP_PAGE_REGS)
+ probe_mask = MEM_PROBE_HIGH;
+
+ if (probe_mask & ~s_data->rsrc_mem_probe) {
+ s_data->rsrc_mem_probe |= probe_mask;
+
+ if (s->state & SOCKET_PRESENT)
+ validate_mem(s, probe_mask);
+ }
+
+ up(&rsrc_sem);
+ }
+}
+
+struct pcmcia_align_data {
+ unsigned long mask;
+ unsigned long offset;
+ struct resource_map *map;
+};
+
+static void
+pcmcia_common_align(void *align_data, struct resource *res,
+ unsigned long size, unsigned long align)
+{
+ struct pcmcia_align_data *data = align_data;
+ unsigned long start;
+ /*
+ * Ensure that we have the correct start address
+ */
+ start = (res->start & ~data->mask) + data->offset;
+ if (start < res->start)
+ start += data->mask + 1;
+ res->start = start;
+}
+
+static void
+pcmcia_align(void *align_data, struct resource *res,
+ unsigned long size, unsigned long align)
+{
+ struct pcmcia_align_data *data = align_data;
+ struct resource_map *m;
+
+ pcmcia_common_align(data, res, size, align);
+
+ for (m = data->map->next; m != data->map; m = m->next) {
+ unsigned long start = m->base;
+ unsigned long end = m->base + m->num - 1;
+
+ /*
+ * If the lower resources are not available, try aligning
+ * to this entry of the resource database to see if it'll
+ * fit here.
+ */
+ if (res->start < start) {
+ res->start = start;
+ pcmcia_common_align(data, res, size, align);
+ }
+
+ /*
+ * If we're above the area which was passed in, there's
+ * no point proceeding.
+ */
+ if (res->start >= res->end)
+ break;
+
+ if ((res->start + size - 1) <= end)
+ break;
+ }
+
+ /*
+ * If we failed to find something suitable, ensure we fail.
+ */
+ if (m == data->map)
+ res->start = res->end;
+}
+
+/*
+ * Adjust an existing IO region allocation, but making sure that we don't
+ * encroach outside the resources which the user supplied.
+ */
+static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start,
+ unsigned long r_end, struct pcmcia_socket *s)
+{
+ struct resource_map *m;
+ struct socket_data *s_data = s->resource_data;
+ int ret = -ENOMEM;
+
+ down(&rsrc_sem);
+ for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) {
+ unsigned long start = m->base;
+ unsigned long end = m->base + m->num - 1;
+
+ if (start > r_start || r_end > end)
+ continue;
+
+ ret = adjust_resource(res, r_start, r_end - r_start + 1);
+ break;
+ }
+ up(&rsrc_sem);
+
+ return ret;
+}
+
+/*======================================================================
+
+ These find ranges of I/O ports or memory addresses that are not
+ currently allocated by other devices.
+
+ The 'align' field should reflect the number of bits of address
+ that need to be preserved from the initial value of *base. It
+ should be a power of two, greater than or equal to 'num'. A value
+ of 0 means that all bits of *base are significant. *base should
+ also be strictly less than 'align'.
+
+======================================================================*/
+
+struct resource *nonstatic_find_io_region(unsigned long base, int num,
+ unsigned long align, struct pcmcia_socket *s)
+{
+ struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.class_id);
+ struct socket_data *s_data = s->resource_data;
+ struct pcmcia_align_data data;
+ unsigned long min = base;
+ int ret;
+
+ if (align == 0)
+ align = 0x10000;
+
+ data.mask = align - 1;
+ data.offset = base & data.mask;
+ data.map = &s_data->io_db;
+
+ down(&rsrc_sem);
+#ifdef CONFIG_PCI
+ if (s->cb_dev) {
+ ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
+ min, 0, pcmcia_align, &data);
+ } else
+#endif
+ ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
+ 1, pcmcia_align, &data);
+ up(&rsrc_sem);
+
+ if (ret != 0) {
+ kfree(res);
+ res = NULL;
+ }
+ return res;
+}
+
+struct resource * nonstatic_find_mem_region(u_long base, u_long num, u_long align,
+ int low, struct pcmcia_socket *s)
+{
+ struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.class_id);
+ struct socket_data *s_data = s->resource_data;
+ struct pcmcia_align_data data;
+ unsigned long min, max;
+ int ret, i;
+
+ low = low || !(s->features & SS_CAP_PAGE_REGS);
+
+ data.mask = align - 1;
+ data.offset = base & data.mask;
+ data.map = &s_data->mem_db;
+
+ for (i = 0; i < 2; i++) {
+ if (low) {
+ max = 0x100000UL;
+ min = base < max ? base : 0;
+ } else {
+ max = ~0UL;
+ min = 0x100000UL + base;
+ }
+
+ down(&rsrc_sem);
+#ifdef CONFIG_PCI
+ if (s->cb_dev) {
+ ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num,
+ 1, min, 0,
+ pcmcia_align, &data);
+ } else
+#endif
+ ret = allocate_resource(&iomem_resource, res, num, min,
+ max, 1, pcmcia_align, &data);
+ up(&rsrc_sem);
+ if (ret == 0 || low)
+ break;
+ low = 1;
+ }
+
+ if (ret != 0) {
+ kfree(res);
+ res = NULL;
+ }
+ return res;
+}
+
+
+static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj)
+{
+ u_long base, num;
+ struct socket_data *data = s->resource_data;
+ int ret;
+
+ base = adj->resource.memory.Base;
+ num = adj->resource.memory.Size;
+ if ((num == 0) || (base+num-1 < base))
+ return CS_BAD_SIZE;
+
+ ret = CS_SUCCESS;
+
+ down(&rsrc_sem);
+ switch (adj->Action) {
+ case ADD_MANAGED_RESOURCE:
+ ret = add_interval(&data->mem_db, base, num);
+ break;
+ case REMOVE_MANAGED_RESOURCE:
+ ret = sub_interval(&data->mem_db, base, num);
+ if (ret == CS_SUCCESS) {
+ struct pcmcia_socket *socket;
+ down_read(&pcmcia_socket_list_rwsem);
+ list_for_each_entry(socket, &pcmcia_socket_list, socket_list)
+ release_cis_mem(socket);
+ up_read(&pcmcia_socket_list_rwsem);
+ }
+ break;
+ default:
+ ret = CS_UNSUPPORTED_FUNCTION;
+ }
+ up(&rsrc_sem);
+
+ return ret;
+}
+
+
+static int adjust_io(struct pcmcia_socket *s, adjust_t *adj)
+{
+ struct socket_data *data = s->resource_data;
+ kio_addr_t base, num;
+ int ret = CS_SUCCESS;
+
+ base = adj->resource.io.BasePort;
+ num = adj->resource.io.NumPorts;
+ if ((base < 0) || (base > 0xffff))
+ return CS_BAD_BASE;
+ if ((num <= 0) || (base+num > 0x10000) || (base+num <= base))
+ return CS_BAD_SIZE;
+
+ down(&rsrc_sem);
+ switch (adj->Action) {
+ case ADD_MANAGED_RESOURCE:
+ if (add_interval(&data->io_db, base, num) != 0) {
+ ret = CS_IN_USE;
+ break;
+ }
+#ifdef CONFIG_PCMCIA_PROBE
+ if (probe_io)
+ do_io_probe(s, base, num);
+#endif
+ break;
+ case REMOVE_MANAGED_RESOURCE:
+ sub_interval(&data->io_db, base, num);
+ break;
+ default:
+ ret = CS_UNSUPPORTED_FUNCTION;
+ break;
+ }
+ up(&rsrc_sem);
+
+ return ret;
+}
+
+
+static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj)
+{
+ switch (adj->Resource) {
+ case RES_MEMORY_RANGE:
+ return adjust_memory(s, adj);
+ case RES_IO_RANGE:
+ return adjust_io(s, adj);
+ }
+ return CS_UNSUPPORTED_FUNCTION;
+}
+
+static int nonstatic_init(struct pcmcia_socket *s)
+{
+ struct socket_data *data;
+
+ data = kmalloc(sizeof(struct socket_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ memset(data, 0, sizeof(struct socket_data));
+
+ data->mem_db.next = &data->mem_db;
+ data->io_db.next = &data->io_db;
+
+ s->resource_data = (void *) data;
+
+ return 0;
+}
+
+static void nonstatic_release_resource_db(struct pcmcia_socket *s)
+{
+ struct socket_data *data = s->resource_data;
+ struct resource_map *p, *q;
+
+ down(&rsrc_sem);
+ for (p = data->mem_db.next; p != &data->mem_db; p = q) {
+ q = p->next;
+ kfree(p);
+ }
+ for (p = data->io_db.next; p != &data->io_db; p = q) {
+ q = p->next;
+ kfree(p);
+ }
+ up(&rsrc_sem);
+}
+
+
+struct pccard_resource_ops pccard_nonstatic_ops = {
+ .validate_mem = pcmcia_nonstatic_validate_mem,
+ .adjust_io_region = nonstatic_adjust_io_region,
+ .find_io = nonstatic_find_io_region,
+ .find_mem = nonstatic_find_mem_region,
+ .adjust_resource = nonstatic_adjust_resource_info,
+ .init = nonstatic_init,
+ .exit = nonstatic_release_resource_db,
+};
+EXPORT_SYMBOL(pccard_nonstatic_ops);
+
+
+/* sysfs interface to the resource database */
+
+static ssize_t show_io_db(struct class_device *class_dev, char *buf)
+{
+ struct pcmcia_socket *s = class_get_devdata(class_dev);
+ struct socket_data *data;
+ struct resource_map *p;
+ ssize_t ret = 0;
+
+ down(&rsrc_sem);
+ data = s->resource_data;
+
+ for (p = data->io_db.next; p != &data->io_db; p = p->next) {
+ if (ret > (PAGE_SIZE - 10))
+ continue;
+ ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
+ "0x%08lx - 0x%08lx\n",
+ ((unsigned long) p->base),
+ ((unsigned long) p->base + p->num - 1));
+ }
+
+ up(&rsrc_sem);
+ return (ret);
+}
+
+static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size_t count)
+{
+ struct pcmcia_socket *s = class_get_devdata(class_dev);
+ unsigned long start_addr, end_addr;
+ unsigned int add = 1;
+ adjust_t adj;
+ ssize_t ret = 0;
+
+ ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
+ if (ret != 2) {
+ ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
+ add = 0;
+ if (ret != 2) {
+ ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
+ add = 1;
+ if (ret != 2)
+ return -EINVAL;
+ }
+ }
+ if (end_addr <= start_addr)
+ return -EINVAL;
+
+ adj.Action = add ? ADD_MANAGED_RESOURCE : REMOVE_MANAGED_RESOURCE;
+ adj.Resource = RES_IO_RANGE;
+ adj.resource.io.BasePort = start_addr;
+ adj.resource.io.NumPorts = end_addr - start_addr + 1;
+
+ ret = adjust_io(s, &adj);
+
+ return ret ? ret : count;
+}
+static CLASS_DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db);
+
+static ssize_t show_mem_db(struct class_device *class_dev, char *buf)
+{
+ struct pcmcia_socket *s = class_get_devdata(class_dev);
+ struct socket_data *data;
+ struct resource_map *p;
+ ssize_t ret = 0;
+
+ down(&rsrc_sem);
+ data = s->resource_data;
+
+ for (p = data->mem_db.next; p != &data->mem_db; p = p->next) {
+ if (ret > (PAGE_SIZE - 10))
+ continue;
+ ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1),
+ "0x%08lx - 0x%08lx\n",
+ ((unsigned long) p->base),
+ ((unsigned long) p->base + p->num - 1));
+ }
+
+ up(&rsrc_sem);
+ return (ret);
+}
+
+static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, size_t count)
+{
+ struct pcmcia_socket *s = class_get_devdata(class_dev);
+ unsigned long start_addr, end_addr;
+ unsigned int add = 1;
+ adjust_t adj;
+ ssize_t ret = 0;
+
+ ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr);
+ if (ret != 2) {
+ ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr);
+ add = 0;
+ if (ret != 2) {
+ ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr);
+ add = 1;
+ if (ret != 2)
+ return -EINVAL;
+ }
+ }
+ if (end_addr <= start_addr)
+ return -EINVAL;
+
+ adj.Action = add ? ADD_MANAGED_RESOURCE : REMOVE_MANAGED_RESOURCE;
+ adj.Resource = RES_MEMORY_RANGE;
+ adj.resource.memory.Base = start_addr;
+ adj.resource.memory.Size = end_addr - start_addr + 1;
+
+ ret = adjust_memory(s, &adj);
+
+ return ret ? ret : count;
+}
+static CLASS_DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db);
+
+static struct class_device_attribute *pccard_rsrc_attributes[] = {
+ &class_device_attr_available_resources_io,
+ &class_device_attr_available_resources_mem,
+ NULL,
+};
+
+static int __devinit pccard_sysfs_add_rsrc(struct class_device *class_dev)
+{
+ struct pcmcia_socket *s = class_get_devdata(class_dev);
+ struct class_device_attribute **attr;
+ int ret = 0;
+ if (s->resource_ops != &pccard_nonstatic_ops)
+ return 0;
+
+ for (attr = pccard_rsrc_attributes; *attr; attr++) {
+ ret = class_device_create_file(class_dev, *attr);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+static void __devexit pccard_sysfs_remove_rsrc(struct class_device *class_dev)
+{
+ struct pcmcia_socket *s = class_get_devdata(class_dev);
+ struct class_device_attribute **attr;
+
+ if (s->resource_ops != &pccard_nonstatic_ops)
+ return;
+
+ for (attr = pccard_rsrc_attributes; *attr; attr++)
+ class_device_remove_file(class_dev, *attr);
+}
+
+static struct class_interface pccard_rsrc_interface = {
+ .class = &pcmcia_socket_class,
+ .add = &pccard_sysfs_add_rsrc,
+ .remove = __devexit_p(&pccard_sysfs_remove_rsrc),
+};
+
+static int __init nonstatic_sysfs_init(void)
+{
+ return class_interface_register(&pccard_rsrc_interface);
+}
+
+static void __exit nonstatic_sysfs_exit(void)
+{
+ class_interface_unregister(&pccard_rsrc_interface);
+}
+
+module_init(nonstatic_sysfs_init);
+module_exit(nonstatic_sysfs_exit);