Move all the "nonstatic" code to a new file, and link it into pcmcia_core.ko Signed-off-by: Dominik Brodowski drivers/pcmcia/Makefile | 2 drivers/pcmcia/rsrc_mgr.c | 753 ---------------------------------------- drivers/pcmcia/rsrc_nonstatic.c | 771 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 772 insertions(+), 754 deletions(-) diff -ruN linux-original/drivers/pcmcia/Makefile linux/drivers/pcmcia/Makefile --- linux-original/drivers/pcmcia/Makefile 2004-11-07 13:07:18.956492632 +0100 +++ linux/drivers/pcmcia/Makefile 2004-11-07 13:20:42.288367624 +0100 @@ -6,7 +6,7 @@ EXTRA_CFLAGS += -DDEBUG endif -pcmcia_core-y += cs.o cistpl.o rsrc_mgr.o socket_sysfs.o +pcmcia_core-y += cs.o cistpl.o rsrc_mgr.o socket_sysfs.o rsrc_nonstatic.o pcmcia_core-$(CONFIG_CARDBUS) += cardbus.o obj-$(CONFIG_PCCARD) += pcmcia_core.o diff -ruN linux-original/drivers/pcmcia/rsrc_mgr.c linux/drivers/pcmcia/rsrc_mgr.c --- linux-original/drivers/pcmcia/rsrc_mgr.c 2004-11-07 13:19:28.305614712 +0100 +++ linux/drivers/pcmcia/rsrc_mgr.c 2004-11-07 13:23:21.343187616 +0100 @@ -34,32 +34,8 @@ #include #include "cs_internal.h" -/*====================================================================*/ - -/* 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 - -/*====================================================================== - - The resource_map_t structures are used to track what resources are - available for allocation for PC Card devices. - -======================================================================*/ - -typedef struct resource_map_t resource_map_t; - static DECLARE_MUTEX(rsrc_sem); -#define MEM_PROBE_LOW (1 << 0) -#define MEM_PROBE_HIGH (1 << 1) - #ifdef CONFIG_PCMCIA_PROBE typedef struct irq_info_t { @@ -73,616 +49,6 @@ #endif -/*====================================================================== - - 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(resource_map_t *map, u_long base, u_long num) -{ - resource_map_t *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(resource_map_t), 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(resource_map_t *map, u_long base, u_long num) -{ - resource_map_t *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(resource_map_t), 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, ioaddr_t base, ioaddr_t num) -{ - struct resource *res; - ioaddr_t i, j, bad, any; - u_char *b, hole, most; - - printk(KERN_INFO "cs: IO port probe 0x%04x-0x%04x:", - 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->io_db, bad, i-bad); - printk(" %#04x-%#04x", 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->io_db, bad, i-bad); - printk(" %#04x-%#04x", 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) -{ - 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->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(resource_map_t *m, struct pcmcia_socket *s) -{ - u_long ok; - if (m == &s->mem_db) - return 0; - ok = inv_probe(m->next, s); - if (ok) { - if (m->base >= 0x100000) - sub_interval(&s->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) -{ - resource_map_t *m, mm; - static u_char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; - u_long b, i, ok = 0; - - /* We do up to four passes through the list */ - if (probe_mask & MEM_PROBE_HIGH) { - if (inv_probe(s->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->mem_db.next; m != &s->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->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) -{ - resource_map_t *m, mm; - - for (m = s->mem_db.next; m != &s->mem_db; m = mm.next) { - mm = *m; - if (do_mem_probe(mm.base, mm.num, s)) - break; - } -} - -#endif /* CONFIG_PCMCIA_PROBE */ - - -/* - * Locking note: this is the only place where we take - * both rsrc_sem and skt_sem. - */ -static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) -{ - 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->rsrc_mem_probe) { - s->rsrc_mem_probe |= probe_mask; - - down(&s->skt_sem); - - if (s->state & SOCKET_PRESENT) - validate_mem(s, probe_mask); - - up(&s->skt_sem); - } - - up(&rsrc_sem); - } -} - -struct pcmcia_align_data { - unsigned long mask; - unsigned long offset; - resource_map_t *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; - resource_map_t *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) -{ - resource_map_t *m; - int ret = -ENOMEM; - - down(&rsrc_sem); - for (m = s->io_db.next; m != &s->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 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->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 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->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; -} /*====================================================================== @@ -809,85 +175,6 @@ #endif -/*====================================================================== - - The various adjust_* calls form the external interface to the - resource database. - -======================================================================*/ - -static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj) -{ - u_long base, num; - 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(&s->mem_db, base, num); - break; - case REMOVE_MANAGED_RESOURCE: - ret = sub_interval(&s->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) -{ - int base, num, 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(&s->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(&s->io_db, base, num); - break; - default: - ret = CS_UNSUPPORTED_FUNCTION; - break; - } - up(&rsrc_sem); - - return ret; -} - /*====================================================================*/ static int adjust_irq(adjust_t *adj) @@ -938,19 +225,6 @@ 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; -} - int pcmcia_adjust_resource_info(adjust_t *adj) { struct pcmcia_socket *s; @@ -970,24 +244,6 @@ } EXPORT_SYMBOL(pcmcia_adjust_resource_info); -/*====================================================================*/ - -static void nonstatic_release_resource_db(struct pcmcia_socket *s) -{ - resource_map_t *p, *q; - - for (p = s->mem_db.next; p != &s->mem_db; p = q) { - q = p->next; - kfree(p); - } - for (p = s->io_db.next; p != &s->io_db; p = q) { - q = p->next; - kfree(p); - } -} - - - void pcmcia_validate_mem(struct pcmcia_socket *s) { if (s->resource_ops->validate_mem) @@ -1034,12 +290,3 @@ .adjust_resource = NULL, .exit = NULL, }; - -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, - .exit = nonstatic_release_resource_db, -}; diff -ruN linux-original/drivers/pcmcia/rsrc_nonstatic.c linux/drivers/pcmcia/rsrc_nonstatic.c --- linux-original/drivers/pcmcia/rsrc_nonstatic.c 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/pcmcia/rsrc_nonstatic.c 2004-11-07 13:32:31.441559952 +0100 @@ -0,0 +1,771 @@ +/* + * 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 + * . Portions created by David A. Hinds + * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. + * + * (C) 1999 David A. Hinds + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include "cs_internal.h" + +/* 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 + +typedef struct resource_map_t resource_map_t; + +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(resource_map_t *map, u_long base, u_long num) +{ + resource_map_t *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(resource_map_t), 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(resource_map_t *map, u_long base, u_long num) +{ + resource_map_t *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(resource_map_t), 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, ioaddr_t base, ioaddr_t num) +{ + struct resource *res; + ioaddr_t i, j, bad, any; + u_char *b, hole, most; + + printk(KERN_INFO "cs: IO port probe 0x%04x-0x%04x:", + 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->io_db, bad, i-bad); + printk(" %#04x-%#04x", 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->io_db, bad, i-bad); + printk(" %#04x-%#04x", 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) +{ + 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->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(resource_map_t *m, struct pcmcia_socket *s) +{ + u_long ok; + if (m == &s->mem_db) + return 0; + ok = inv_probe(m->next, s); + if (ok) { + if (m->base >= 0x100000) + sub_interval(&s->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) +{ + resource_map_t *m, mm; + static u_char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; + u_long b, i, ok = 0; + + /* We do up to four passes through the list */ + if (probe_mask & MEM_PROBE_HIGH) { + if (inv_probe(s->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->mem_db.next; m != &s->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->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) +{ + resource_map_t *m, mm; + + for (m = s->mem_db.next; m != &s->mem_db; m = mm.next) { + mm = *m; + if (do_mem_probe(mm.base, mm.num, s)) + break; + } +} + +#endif /* CONFIG_PCMCIA_PROBE */ + + +/* + * Locking note: this is the only place where we take + * both rsrc_sem and skt_sem. + */ +static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) +{ + 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->rsrc_mem_probe) { + s->rsrc_mem_probe |= probe_mask; + + down(&s->skt_sem); + + if (s->state & SOCKET_PRESENT) + validate_mem(s, probe_mask); + + up(&s->skt_sem); + } + + up(&rsrc_sem); + } +} + +struct pcmcia_align_data { + unsigned long mask; + unsigned long offset; + resource_map_t *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; + resource_map_t *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) +{ + resource_map_t *m; + int ret = -ENOMEM; + + down(&rsrc_sem); + for (m = s->io_db.next; m != &s->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 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->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 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->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; + 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(&s->mem_db, base, num); + break; + case REMOVE_MANAGED_RESOURCE: + ret = sub_interval(&s->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) +{ + int base, num, 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(&s->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(&s->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 void nonstatic_release_resource_db(struct pcmcia_socket *s) +{ + resource_map_t *p, *q; + + for (p = s->mem_db.next; p != &s->mem_db; p = q) { + q = p->next; + kfree(p); + } + for (p = s->io_db.next; p != &s->io_db; p = q) { + q = p->next; + kfree(p); + } +} + + +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, + .exit = nonstatic_release_resource_db, +};