FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-27 20:07:09 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
f50f9d8867
linux/drivers/pcmcia/cistpl.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h 
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

1504 lines
38 KiB
C
Raw Blame History

/*
* cistpl.c -- 16-bit PCMCIA Card Information Structure parser
*
* 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/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/ss.h>
#include <pcmcia/cs.h>
#include <pcmcia/bulkmem.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/cistpl.h>
#include "cs_internal.h"
static const u_char mantissa[] = {
10, 12, 13, 15, 20, 25, 30, 35,
40, 45, 50, 55, 60, 70, 80, 90
};
static const u_int exponent[] = {
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
};
/* Convert an extended speed byte to a time in nanoseconds */
#define SPEED_CVT(v) \
(mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
/* Convert a power byte to a current in 0.1 microamps */
#define POWER_CVT(v) \
(mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
#define POWER_SCALE(v) (exponent[(v)&7])
/* Upper limit on reasonable # of tuples */
#define MAX_TUPLES 200
/*====================================================================*/
/* Parameters that can be set with 'insmod' */
/* 16-bit CIS? */
static int cis_width;
module_param(cis_width, int, 0444);
void release_cis_mem(struct pcmcia_socket *s)
{
if (s->cis_mem.flags & MAP_ACTIVE) {
s->cis_mem.flags &= ~MAP_ACTIVE;
s->ops->set_mem_map(s, &s->cis_mem);
if (s->cis_mem.res) {
release_resource(s->cis_mem.res);
kfree(s->cis_mem.res);
s->cis_mem.res = NULL;
}
iounmap(s->cis_virt);
s->cis_virt = NULL;
}
}
EXPORT_SYMBOL(release_cis_mem);
/*
* Map the card memory at "card_offset" into virtual space.
* If flags & MAP_ATTRIB, map the attribute space, otherwise
* map the memory space.
*/
static void __iomem *
set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags)
{
pccard_mem_map *mem = &s->cis_mem;
int ret;
if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) {
mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s);
if (mem->res == NULL) {
printk(KERN_NOTICE "cs: unable to map card memory!\n");
return NULL;
}
s->cis_virt = NULL;
}
if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
s->cis_virt = ioremap(mem->res->start, s->map_size);
mem->card_start = card_offset;
mem->flags = flags;
ret = s->ops->set_mem_map(s, mem);
if (ret) {
iounmap(s->cis_virt);
s->cis_virt = NULL;
return NULL;
}
if (s->features & SS_CAP_STATIC_MAP) {
if (s->cis_virt)
iounmap(s->cis_virt);
s->cis_virt = ioremap(mem->static_start, s->map_size);
}
return s->cis_virt;
}
/*======================================================================
Low-level functions to read and write CIS memory. I think the
write routine is only useful for writing one-byte registers.
======================================================================*/
/* Bits in attr field */
#define IS_ATTR 1
#define IS_INDIRECT 8
int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
u_int len, void *ptr)
{
void __iomem *sys, *end;
unsigned char *buf = ptr;
cs_dbg(s, 3, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len);
if (attr & IS_INDIRECT) {
/* Indirect accesses use a bunch of special registers at fixed
locations in common memory */
u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
if (attr & IS_ATTR) {
addr *= 2;
flags = ICTRL0_AUTOINC;
}
sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
if (!sys) {
memset(ptr, 0xff, len);
return -1;
}
writeb(flags, sys+CISREG_ICTRL0);
writeb(addr & 0xff, sys+CISREG_IADDR0);
writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
for ( ; len > 0; len--, buf++)
*buf = readb(sys+CISREG_IDATA0);
} else {
u_int inc = 1, card_offset, flags;
flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
if (attr) {
flags |= MAP_ATTRIB;
inc++;
addr *= 2;
}
card_offset = addr & ~(s->map_size-1);
while (len) {
sys = set_cis_map(s, card_offset, flags);
if (!sys) {
memset(ptr, 0xff, len);
return -1;
}
end = sys + s->map_size;
sys = sys + (addr & (s->map_size-1));
for ( ; len > 0; len--, buf++, sys += inc) {
if (sys == end)
break;
*buf = readb(sys);
}
card_offset += s->map_size;
addr = 0;
}
}
cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
*(u_char *)(ptr+0), *(u_char *)(ptr+1),
*(u_char *)(ptr+2), *(u_char *)(ptr+3));
return 0;
}
EXPORT_SYMBOL(pcmcia_read_cis_mem);
void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
u_int len, void *ptr)
{
void __iomem *sys, *end;
unsigned char *buf = ptr;
cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
if (attr & IS_INDIRECT) {
/* Indirect accesses use a bunch of special registers at fixed
locations in common memory */
u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
if (attr & IS_ATTR) {
addr *= 2;
flags = ICTRL0_AUTOINC;
}
sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
if (!sys)
return; /* FIXME: Error */
writeb(flags, sys+CISREG_ICTRL0);
writeb(addr & 0xff, sys+CISREG_IADDR0);
writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
for ( ; len > 0; len--, buf++)
writeb(*buf, sys+CISREG_IDATA0);
} else {
u_int inc = 1, card_offset, flags;
flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
if (attr & IS_ATTR) {
flags |= MAP_ATTRIB;
inc++;
addr *= 2;
}
card_offset = addr & ~(s->map_size-1);
while (len) {
sys = set_cis_map(s, card_offset, flags);
if (!sys)
return; /* FIXME: error */
end = sys + s->map_size;
sys = sys + (addr & (s->map_size-1));
for ( ; len > 0; len--, buf++, sys += inc) {
if (sys == end)
break;
writeb(*buf, sys);
}
card_offset += s->map_size;
addr = 0;
}
}
}
EXPORT_SYMBOL(pcmcia_write_cis_mem);
/*======================================================================
This is a wrapper around read_cis_mem, with the same interface,
but which caches information, for cards whose CIS may not be
readable all the time.
======================================================================*/
static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
u_int len, void *ptr)
{
struct cis_cache_entry *cis;
int ret;
if (s->fake_cis) {
if (s->fake_cis_len > addr+len)
memcpy(ptr, s->fake_cis+addr, len);
else
memset(ptr, 0xff, len);
return;
}
list_for_each_entry(cis, &s->cis_cache, node) {
if (cis->addr == addr && cis->len == len && cis->attr == attr) {
memcpy(ptr, cis->cache, len);
return;
}
}
#ifdef CONFIG_CARDBUS
if (s->state & SOCKET_CARDBUS)
ret = read_cb_mem(s, attr, addr, len, ptr);
else
#endif
ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
if (ret == 0) {
/* Copy data into the cache */
cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
if (cis) {
cis->addr = addr;
cis->len = len;
cis->attr = attr;
memcpy(cis->cache, ptr, len);
list_add(&cis->node, &s->cis_cache);
}
}
}
static void
remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
{
struct cis_cache_entry *cis;
list_for_each_entry(cis, &s->cis_cache, node)
if (cis->addr == addr && cis->len == len && cis->attr == attr) {
list_del(&cis->node);
kfree(cis);
break;
}
}
void destroy_cis_cache(struct pcmcia_socket *s)
{
struct list_head *l, *n;
list_for_each_safe(l, n, &s->cis_cache) {
struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
list_del(&cis->node);
kfree(cis);
}
/*
* If there was a fake CIS, destroy that as well.
*/
kfree(s->fake_cis);
s->fake_cis = NULL;
}
EXPORT_SYMBOL(destroy_cis_cache);
/*======================================================================
This verifies if the CIS of a card matches what is in the CIS
cache.
======================================================================*/
int verify_cis_cache(struct pcmcia_socket *s)
{
struct cis_cache_entry *cis;
char *buf;
buf = kmalloc(256, GFP_KERNEL);
if (buf == NULL)
return -1;
list_for_each_entry(cis, &s->cis_cache, node) {
int len = cis->len;
if (len > 256)
len = 256;
#ifdef CONFIG_CARDBUS
if (s->state & SOCKET_CARDBUS)
read_cb_mem(s, cis->attr, cis->addr, len, buf);
else
#endif
pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
if (memcmp(buf, cis->cache, len) != 0) {
kfree(buf);
return -1;
}
}
kfree(buf);
return 0;
}
/*======================================================================
For really bad cards, we provide a facility for uploading a
replacement CIS.
======================================================================*/
int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
{
kfree(s->fake_cis);
s->fake_cis = NULL;
if (cis->Length > CISTPL_MAX_CIS_SIZE)
return CS_BAD_SIZE;
s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
if (s->fake_cis == NULL)
return CS_OUT_OF_RESOURCE;
s->fake_cis_len = cis->Length;
memcpy(s->fake_cis, cis->Data, cis->Length);
return CS_SUCCESS;
}
EXPORT_SYMBOL(pcmcia_replace_cis);
/*======================================================================
The high-level CIS tuple services
======================================================================*/
typedef struct tuple_flags {
u_int link_space:4;
u_int has_link:1;
u_int mfc_fn:3;
u_int space:4;
} tuple_flags;
#define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
#define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
#define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
#define SPACE(f) (((tuple_flags *)(&(f)))->space)
int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
{
if (!s)
return CS_BAD_HANDLE;
if (!(s->state & SOCKET_PRESENT))
return CS_NO_CARD;
tuple->TupleLink = tuple->Flags = 0;
#ifdef CONFIG_CARDBUS
if (s->state & SOCKET_CARDBUS) {
struct pci_dev *dev = s->cb_dev;
u_int ptr;
pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
tuple->CISOffset = ptr & ~7;
SPACE(tuple->Flags) = (ptr & 7);
} else
#endif
{
/* Assume presence of a LONGLINK_C to address 0 */
tuple->CISOffset = tuple->LinkOffset = 0;
SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
}
if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
!(tuple->Attributes & TUPLE_RETURN_COMMON)) {
cisdata_t req = tuple->DesiredTuple;
tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
tuple->DesiredTuple = CISTPL_LINKTARGET;
if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
return CS_NO_MORE_ITEMS;
} else
tuple->CISOffset = tuple->TupleLink = 0;
tuple->DesiredTuple = req;
}
return pccard_get_next_tuple(s, function, tuple);
}
EXPORT_SYMBOL(pccard_get_first_tuple);
static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
{
u_char link[5];
u_int ofs;
if (MFC_FN(tuple->Flags)) {
/* Get indirect link from the MFC tuple */
read_cis_cache(s, LINK_SPACE(tuple->Flags),
tuple->LinkOffset, 5, link);
ofs = le32_to_cpu(*(__le32 *)(link+1));
SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
/* Move to the next indirect link */
tuple->LinkOffset += 5;
MFC_FN(tuple->Flags)--;
} else if (HAS_LINK(tuple->Flags)) {
ofs = tuple->LinkOffset;
SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
HAS_LINK(tuple->Flags) = 0;
} else {
return -1;
}
if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
/* This is ugly, but a common CIS error is to code the long
link offset incorrectly, so we check the right spot... */
read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
(strncmp(link+2, "CIS", 3) == 0))
return ofs;
remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
/* Then, we try the wrong spot... */
ofs = ofs >> 1;
}
read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
(strncmp(link+2, "CIS", 3) == 0))
return ofs;
remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
return -1;
}
int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
{
u_char link[2], tmp;
int ofs, i, attr;
if (!s)
return CS_BAD_HANDLE;
if (!(s->state & SOCKET_PRESENT))
return CS_NO_CARD;
link[1] = tuple->TupleLink;
ofs = tuple->CISOffset + tuple->TupleLink;
attr = SPACE(tuple->Flags);
for (i = 0; i < MAX_TUPLES; i++) {
if (link[1] == 0xff) {
link[0] = CISTPL_END;
} else {
read_cis_cache(s, attr, ofs, 2, link);
if (link[0] == CISTPL_NULL) {
ofs++; continue;
}
}
/* End of chain? Follow long link if possible */
if (link[0] == CISTPL_END) {
if ((ofs = follow_link(s, tuple)) < 0)
return CS_NO_MORE_ITEMS;
attr = SPACE(tuple->Flags);
read_cis_cache(s, attr, ofs, 2, link);
}
/* Is this a link tuple? Make a note of it */
if ((link[0] == CISTPL_LONGLINK_A) ||
(link[0] == CISTPL_LONGLINK_C) ||
(link[0] == CISTPL_LONGLINK_MFC) ||
(link[0] == CISTPL_LINKTARGET) ||
(link[0] == CISTPL_INDIRECT) ||
(link[0] == CISTPL_NO_LINK)) {
switch (link[0]) {
case CISTPL_LONGLINK_A:
HAS_LINK(tuple->Flags) = 1;
LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
break;
case CISTPL_LONGLINK_C:
HAS_LINK(tuple->Flags) = 1;
LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
break;
case CISTPL_INDIRECT:
HAS_LINK(tuple->Flags) = 1;
LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
tuple->LinkOffset = 0;
break;
case CISTPL_LONGLINK_MFC:
tuple->LinkOffset = ofs + 3;
LINK_SPACE(tuple->Flags) = attr;
if (function == BIND_FN_ALL) {
/* Follow all the MFC links */
read_cis_cache(s, attr, ofs+2, 1, &tmp);
MFC_FN(tuple->Flags) = tmp;
} else {
/* Follow exactly one of the links */
MFC_FN(tuple->Flags) = 1;
tuple->LinkOffset += function * 5;
}
break;
case CISTPL_NO_LINK:
HAS_LINK(tuple->Flags) = 0;
break;
}
if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
(tuple->DesiredTuple == RETURN_FIRST_TUPLE))
break;
} else
if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
break;
if (link[0] == tuple->DesiredTuple)
break;
ofs += link[1] + 2;
}
if (i == MAX_TUPLES) {
cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
return CS_NO_MORE_ITEMS;
}
tuple->TupleCode = link[0];
tuple->TupleLink = link[1];
tuple->CISOffset = ofs + 2;
return CS_SUCCESS;
}
EXPORT_SYMBOL(pccard_get_next_tuple);
/*====================================================================*/
#define _MIN(a, b) (((a) < (b)) ? (a) : (b))
int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
{
u_int len;
if (!s)
return CS_BAD_HANDLE;
if (tuple->TupleLink < tuple->TupleOffset)
return CS_NO_MORE_ITEMS;
len = tuple->TupleLink - tuple->TupleOffset;
tuple->TupleDataLen = tuple->TupleLink;
if (len == 0)
return CS_SUCCESS;
read_cis_cache(s, SPACE(tuple->Flags),
tuple->CISOffset + tuple->TupleOffset,
_MIN(len, tuple->TupleDataMax), tuple->TupleData);
return CS_SUCCESS;
}
EXPORT_SYMBOL(pccard_get_tuple_data);
/*======================================================================
Parsing routines for individual tuples
======================================================================*/
static int parse_device(tuple_t *tuple, cistpl_device_t *device)
{
int i;
u_char scale;
u_char *p, *q;
p = (u_char *)tuple->TupleData;
q = p + tuple->TupleDataLen;
device->ndev = 0;
for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
if (*p == 0xff) break;
device->dev[i].type = (*p >> 4);
device->dev[i].wp = (*p & 0x08) ? 1 : 0;
switch (*p & 0x07) {
case 0: device->dev[i].speed = 0; break;
case 1: device->dev[i].speed = 250; break;
case 2: device->dev[i].speed = 200; break;
case 3: device->dev[i].speed = 150; break;
case 4: device->dev[i].speed = 100; break;
case 7:
if (++p == q) return CS_BAD_TUPLE;
device->dev[i].speed = SPEED_CVT(*p);
while (*p & 0x80)
if (++p == q) return CS_BAD_TUPLE;
break;
default:
return CS_BAD_TUPLE;
}
if (++p == q) return CS_BAD_TUPLE;
if (*p == 0xff) break;
scale = *p & 7;
if (scale == 7) return CS_BAD_TUPLE;
device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
device->ndev++;
if (++p == q) break;
}
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
{
u_char *p;
if (tuple->TupleDataLen < 5)
return CS_BAD_TUPLE;
p = (u_char *)tuple->TupleData;
csum->addr = tuple->CISOffset+(short)le16_to_cpu(*(__le16 *)p)-2;
csum->len = le16_to_cpu(*(__le16 *)(p + 2));
csum->sum = *(p+4);
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
{
if (tuple->TupleDataLen < 4)
return CS_BAD_TUPLE;
link->addr = le32_to_cpu(*(__le32 *)tuple->TupleData);
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_longlink_mfc(tuple_t *tuple,
cistpl_longlink_mfc_t *link)
{
u_char *p;
int i;
p = (u_char *)tuple->TupleData;
link->nfn = *p; p++;
if (tuple->TupleDataLen <= link->nfn*5)
return CS_BAD_TUPLE;
for (i = 0; i < link->nfn; i++) {
link->fn[i].space = *p; p++;
link->fn[i].addr = le32_to_cpu(*(__le32 *)p); p += 4;
}
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_strings(u_char *p, u_char *q, int max,
char *s, u_char *ofs, u_char *found)
{
int i, j, ns;
if (p == q) return CS_BAD_TUPLE;
ns = 0; j = 0;
for (i = 0; i < max; i++) {
if (*p == 0xff) break;
ofs[i] = j;
ns++;
for (;;) {
s[j++] = (*p == 0xff) ? '\0' : *p;
if ((*p == '\0') || (*p == 0xff)) break;
if (++p == q) return CS_BAD_TUPLE;
}
if ((*p == 0xff) || (++p == q)) break;
}
if (found) {
*found = ns;
return CS_SUCCESS;
} else {
return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
}
}
/*====================================================================*/
static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
{
u_char *p, *q;
p = (u_char *)tuple->TupleData;
q = p + tuple->TupleDataLen;
vers_1->major = *p; p++;
vers_1->minor = *p; p++;
if (p >= q) return CS_BAD_TUPLE;
return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
vers_1->str, vers_1->ofs, &vers_1->ns);
}
/*====================================================================*/
static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
{
u_char *p, *q;
p = (u_char *)tuple->TupleData;
q = p + tuple->TupleDataLen;
return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
altstr->str, altstr->ofs, &altstr->ns);
}
/*====================================================================*/
static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
{
u_char *p, *q;
int nid;
p = (u_char *)tuple->TupleData;
q = p + tuple->TupleDataLen;
for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
if (p > q-2) break;
jedec->id[nid].mfr = p[0];
jedec->id[nid].info = p[1];
p += 2;
}
jedec->nid = nid;
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
{
__le16 *p;
if (tuple->TupleDataLen < 4)
return CS_BAD_TUPLE;
p = (__le16 *)tuple->TupleData;
m->manf = le16_to_cpu(p[0]);
m->card = le16_to_cpu(p[1]);
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
{
u_char *p;
if (tuple->TupleDataLen < 2)
return CS_BAD_TUPLE;
p = (u_char *)tuple->TupleData;
f->func = p[0];
f->sysinit = p[1];
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
{
u_char *p;
int i;
if (tuple->TupleDataLen < 1)
return CS_BAD_TUPLE;
p = (u_char *)tuple->TupleData;
f->type = p[0];
for (i = 1; i < tuple->TupleDataLen; i++)
f->data[i-1] = p[i];
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_config(tuple_t *tuple, cistpl_config_t *config)
{
int rasz, rmsz, i;
u_char *p;
p = (u_char *)tuple->TupleData;
rasz = *p & 0x03;
rmsz = (*p & 0x3c) >> 2;
if (tuple->TupleDataLen < rasz+rmsz+4)
return CS_BAD_TUPLE;
config->last_idx = *(++p);
p++;
config->base = 0;
for (i = 0; i <= rasz; i++)
config->base += p[i] << (8*i);
p += rasz+1;
for (i = 0; i < 4; i++)
config->rmask[i] = 0;
for (i = 0; i <= rmsz; i++)
config->rmask[i>>2] += p[i] << (8*(i%4));
config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
return CS_SUCCESS;
}
/*======================================================================
The following routines are all used to parse the nightmarish
config table entries.
======================================================================*/
static u_char *parse_power(u_char *p, u_char *q,
cistpl_power_t *pwr)
{
int i;
u_int scale;
if (p == q) return NULL;
pwr->present = *p;
pwr->flags = 0;
p++;
for (i = 0; i < 7; i++)
if (pwr->present & (1<<i)) {
if (p == q) return NULL;
pwr->param[i] = POWER_CVT(*p);
scale = POWER_SCALE(*p);
while (*p & 0x80) {
if (++p == q) return NULL;
if ((*p & 0x7f) < 100)
pwr->param[i] += (*p & 0x7f) * scale / 100;
else if (*p == 0x7d)
pwr->flags |= CISTPL_POWER_HIGHZ_OK;
else if (*p == 0x7e)
pwr->param[i] = 0;
else if (*p == 0x7f)
pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
else
return NULL;
}
p++;
}
return p;
}
/*====================================================================*/
static u_char *parse_timing(u_char *p, u_char *q,
cistpl_timing_t *timing)
{
u_char scale;
if (p == q) return NULL;
scale = *p;
if ((scale & 3) != 3) {
if (++p == q) return NULL;
timing->wait = SPEED_CVT(*p);
timing->waitscale = exponent[scale & 3];
} else
timing->wait = 0;
scale >>= 2;
if ((scale & 7) != 7) {
if (++p == q) return NULL;
timing->ready = SPEED_CVT(*p);
timing->rdyscale = exponent[scale & 7];
} else
timing->ready = 0;
scale >>= 3;
if (scale != 7) {
if (++p == q) return NULL;
timing->reserved = SPEED_CVT(*p);
timing->rsvscale = exponent[scale];
} else
timing->reserved = 0;
p++;
return p;
}
/*====================================================================*/
static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
{
int i, j, bsz, lsz;
if (p == q) return NULL;
io->flags = *p;
if (!(*p & 0x80)) {
io->nwin = 1;
io->win[0].base = 0;
io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
return p+1;
}
if (++p == q) return NULL;
io->nwin = (*p & 0x0f) + 1;
bsz = (*p & 0x30) >> 4;
if (bsz == 3) bsz++;
lsz = (*p & 0xc0) >> 6;
if (lsz == 3) lsz++;
p++;
for (i = 0; i < io->nwin; i++) {
io->win[i].base = 0;
io->win[i].len = 1;
for (j = 0; j < bsz; j++, p++) {
if (p == q) return NULL;
io->win[i].base += *p << (j*8);
}
for (j = 0; j < lsz; j++, p++) {
if (p == q) return NULL;
io->win[i].len += *p << (j*8);
}
}
return p;
}
/*====================================================================*/
static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
{
int i, j, asz, lsz, has_ha;
u_int len, ca, ha;
if (p == q) return NULL;
mem->nwin = (*p & 0x07) + 1;
lsz = (*p & 0x18) >> 3;
asz = (*p & 0x60) >> 5;
has_ha = (*p & 0x80);
if (++p == q) return NULL;
for (i = 0; i < mem->nwin; i++) {
len = ca = ha = 0;
for (j = 0; j < lsz; j++, p++) {
if (p == q) return NULL;
len += *p << (j*8);
}
for (j = 0; j < asz; j++, p++) {
if (p == q) return NULL;
ca += *p << (j*8);
}
if (has_ha)
for (j = 0; j < asz; j++, p++) {
if (p == q) return NULL;
ha += *p << (j*8);
}
mem->win[i].len = len << 8;
mem->win[i].card_addr = ca << 8;
mem->win[i].host_addr = ha << 8;
}
return p;
}
/*====================================================================*/
static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
{
if (p == q) return NULL;
irq->IRQInfo1 = *p; p++;
if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
if (p+2 > q) return NULL;
irq->IRQInfo2 = (p[1]<<8) + p[0];
p += 2;
}
return p;
}
/*====================================================================*/
static int parse_cftable_entry(tuple_t *tuple,
cistpl_cftable_entry_t *entry)
{
u_char *p, *q, features;
p = tuple->TupleData;
q = p + tuple->TupleDataLen;
entry->index = *p & 0x3f;
entry->flags = 0;
if (*p & 0x40)
entry->flags |= CISTPL_CFTABLE_DEFAULT;
if (*p & 0x80) {
if (++p == q) return CS_BAD_TUPLE;
if (*p & 0x10)
entry->flags |= CISTPL_CFTABLE_BVDS;
if (*p & 0x20)
entry->flags |= CISTPL_CFTABLE_WP;
if (*p & 0x40)
entry->flags |= CISTPL_CFTABLE_RDYBSY;
if (*p & 0x80)
entry->flags |= CISTPL_CFTABLE_MWAIT;
entry->interface = *p & 0x0f;
} else
entry->interface = 0;
/* Process optional features */
if (++p == q) return CS_BAD_TUPLE;
features = *p; p++;
/* Power options */
if ((features & 3) > 0) {
p = parse_power(p, q, &entry->vcc);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->vcc.present = 0;
if ((features & 3) > 1) {
p = parse_power(p, q, &entry->vpp1);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->vpp1.present = 0;
if ((features & 3) > 2) {
p = parse_power(p, q, &entry->vpp2);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->vpp2.present = 0;
/* Timing options */
if (features & 0x04) {
p = parse_timing(p, q, &entry->timing);
if (p == NULL) return CS_BAD_TUPLE;
} else {
entry->timing.wait = 0;
entry->timing.ready = 0;
entry->timing.reserved = 0;
}
/* I/O window options */
if (features & 0x08) {
p = parse_io(p, q, &entry->io);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->io.nwin = 0;
/* Interrupt options */
if (features & 0x10) {
p = parse_irq(p, q, &entry->irq);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->irq.IRQInfo1 = 0;
switch (features & 0x60) {
case 0x00:
entry->mem.nwin = 0;
break;
case 0x20:
entry->mem.nwin = 1;
entry->mem.win[0].len = le16_to_cpu(*(__le16 *)p) << 8;
entry->mem.win[0].card_addr = 0;
entry->mem.win[0].host_addr = 0;
p += 2;
if (p > q) return CS_BAD_TUPLE;
break;
case 0x40:
entry->mem.nwin = 1;
entry->mem.win[0].len = le16_to_cpu(*(__le16 *)p) << 8;
entry->mem.win[0].card_addr =
le16_to_cpu(*(__le16 *)(p+2)) << 8;
entry->mem.win[0].host_addr = 0;
p += 4;
if (p > q) return CS_BAD_TUPLE;
break;
case 0x60:
p = parse_mem(p, q, &entry->mem);
if (p == NULL) return CS_BAD_TUPLE;
break;
}
/* Misc features */
if (features & 0x80) {
if (p == q) return CS_BAD_TUPLE;
entry->flags |= (*p << 8);
while (*p & 0x80)
if (++p == q) return CS_BAD_TUPLE;
p++;
}
entry->subtuples = q-p;
return CS_SUCCESS;
}
/*====================================================================*/
#ifdef CONFIG_CARDBUS
static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
{
u_char *p;
if (tuple->TupleDataLen < 6)
return CS_BAD_TUPLE;
p = (u_char *)tuple->TupleData;
bar->attr = *p;
p += 2;
bar->size = le32_to_cpu(*(__le32 *)p);
return CS_SUCCESS;
}
static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
{
u_char *p;
p = (u_char *)tuple->TupleData;
if ((*p != 3) || (tuple->TupleDataLen < 6))
return CS_BAD_TUPLE;
config->last_idx = *(++p);
p++;
config->base = le32_to_cpu(*(__le32 *)p);
config->subtuples = tuple->TupleDataLen - 6;
return CS_SUCCESS;
}
static int parse_cftable_entry_cb(tuple_t *tuple,
cistpl_cftable_entry_cb_t *entry)
{
u_char *p, *q, features;
p = tuple->TupleData;
q = p + tuple->TupleDataLen;
entry->index = *p & 0x3f;
entry->flags = 0;
if (*p & 0x40)
entry->flags |= CISTPL_CFTABLE_DEFAULT;
/* Process optional features */
if (++p == q) return CS_BAD_TUPLE;
features = *p; p++;
/* Power options */
if ((features & 3) > 0) {
p = parse_power(p, q, &entry->vcc);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->vcc.present = 0;
if ((features & 3) > 1) {
p = parse_power(p, q, &entry->vpp1);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->vpp1.present = 0;
if ((features & 3) > 2) {
p = parse_power(p, q, &entry->vpp2);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->vpp2.present = 0;
/* I/O window options */
if (features & 0x08) {
if (p == q) return CS_BAD_TUPLE;
entry->io = *p; p++;
} else
entry->io = 0;
/* Interrupt options */
if (features & 0x10) {
p = parse_irq(p, q, &entry->irq);
if (p == NULL) return CS_BAD_TUPLE;
} else
entry->irq.IRQInfo1 = 0;
if (features & 0x20) {
if (p == q) return CS_BAD_TUPLE;
entry->mem = *p; p++;
} else
entry->mem = 0;
/* Misc features */
if (features & 0x80) {
if (p == q) return CS_BAD_TUPLE;
entry->flags |= (*p << 8);
if (*p & 0x80) {
if (++p == q) return CS_BAD_TUPLE;
entry->flags |= (*p << 16);
}
while (*p & 0x80)
if (++p == q) return CS_BAD_TUPLE;
p++;
}
entry->subtuples = q-p;
return CS_SUCCESS;
}
#endif
/*====================================================================*/
static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
{
u_char *p, *q;
int n;
p = (u_char *)tuple->TupleData;
q = p + tuple->TupleDataLen;
for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
if (p > q-6) break;
geo->geo[n].buswidth = p[0];
geo->geo[n].erase_block = 1 << (p[1]-1);
geo->geo[n].read_block = 1 << (p[2]-1);
geo->geo[n].write_block = 1 << (p[3]-1);
geo->geo[n].partition = 1 << (p[4]-1);
geo->geo[n].interleave = 1 << (p[5]-1);
p += 6;
}
geo->ngeo = n;
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
{
u_char *p, *q;
if (tuple->TupleDataLen < 10)
return CS_BAD_TUPLE;
p = tuple->TupleData;
q = p + tuple->TupleDataLen;
v2->vers = p[0];
v2->comply = p[1];
v2->dindex = le16_to_cpu(*(__le16 *)(p+2));
v2->vspec8 = p[6];
v2->vspec9 = p[7];
v2->nhdr = p[8];
p += 9;
return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
}
/*====================================================================*/
static int parse_org(tuple_t *tuple, cistpl_org_t *org)
{
u_char *p, *q;
int i;
p = tuple->TupleData;
q = p + tuple->TupleDataLen;
if (p == q) return CS_BAD_TUPLE;
org->data_org = *p;
if (++p == q) return CS_BAD_TUPLE;
for (i = 0; i < 30; i++) {
org->desc[i] = *p;
if (*p == '\0') break;
if (++p == q) return CS_BAD_TUPLE;
}
return CS_SUCCESS;
}
/*====================================================================*/
static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
{
u_char *p;
if (tuple->TupleDataLen < 10)
return CS_BAD_TUPLE;
p = tuple->TupleData;
fmt->type = p[0];
fmt->edc = p[1];
fmt->offset = le32_to_cpu(*(__le32 *)(p+2));
fmt->length = le32_to_cpu(*(__le32 *)(p+6));
return CS_SUCCESS;
}
/*====================================================================*/
int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
{
int ret = CS_SUCCESS;
if (tuple->TupleDataLen > tuple->TupleDataMax)
return CS_BAD_TUPLE;
switch (tuple->TupleCode) {
case CISTPL_DEVICE:
case CISTPL_DEVICE_A:
ret = parse_device(tuple, &parse->device);
break;
#ifdef CONFIG_CARDBUS
case CISTPL_BAR:
ret = parse_bar(tuple, &parse->bar);
break;
case CISTPL_CONFIG_CB:
ret = parse_config_cb(tuple, &parse->config);
break;
case CISTPL_CFTABLE_ENTRY_CB:
ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
break;
#endif
case CISTPL_CHECKSUM:
ret = parse_checksum(tuple, &parse->checksum);
break;
case CISTPL_LONGLINK_A:
case CISTPL_LONGLINK_C:
ret = parse_longlink(tuple, &parse->longlink);
break;
case CISTPL_LONGLINK_MFC:
ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
break;
case CISTPL_VERS_1:
ret = parse_vers_1(tuple, &parse->version_1);
break;
case CISTPL_ALTSTR:
ret = parse_altstr(tuple, &parse->altstr);
break;
case CISTPL_JEDEC_A:
case CISTPL_JEDEC_C:
ret = parse_jedec(tuple, &parse->jedec);
break;
case CISTPL_MANFID:
ret = parse_manfid(tuple, &parse->manfid);
break;
case CISTPL_FUNCID:
ret = parse_funcid(tuple, &parse->funcid);
break;
case CISTPL_FUNCE:
ret = parse_funce(tuple, &parse->funce);
break;
case CISTPL_CONFIG:
ret = parse_config(tuple, &parse->config);
break;
case CISTPL_CFTABLE_ENTRY:
ret = parse_cftable_entry(tuple, &parse->cftable_entry);
break;
case CISTPL_DEVICE_GEO:
case CISTPL_DEVICE_GEO_A:
ret = parse_device_geo(tuple, &parse->device_geo);
break;
case CISTPL_VERS_2:
ret = parse_vers_2(tuple, &parse->vers_2);
break;
case CISTPL_ORG:
ret = parse_org(tuple, &parse->org);
break;
case CISTPL_FORMAT:
case CISTPL_FORMAT_A:
ret = parse_format(tuple, &parse->format);
break;
case CISTPL_NO_LINK:
case CISTPL_LINKTARGET:
ret = CS_SUCCESS;
break;
default:
ret = CS_UNSUPPORTED_FUNCTION;
break;
}
return ret;
}
EXPORT_SYMBOL(pccard_parse_tuple);
/*======================================================================
This is used internally by Card Services to look up CIS stuff.
======================================================================*/
int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
{
tuple_t tuple;
cisdata_t *buf;
int ret;
buf = kmalloc(256, GFP_KERNEL);
if (buf == NULL)
return CS_OUT_OF_RESOURCE;
tuple.DesiredTuple = code;
tuple.Attributes = TUPLE_RETURN_COMMON;
ret = pccard_get_first_tuple(s, function, &tuple);
if (ret != CS_SUCCESS) goto done;
tuple.TupleData = buf;
tuple.TupleOffset = 0;
tuple.TupleDataMax = 255;
ret = pccard_get_tuple_data(s, &tuple);
if (ret != CS_SUCCESS) goto done;
ret = pccard_parse_tuple(&tuple, parse);
done:
kfree(buf);
return ret;
}
EXPORT_SYMBOL(pccard_read_tuple);
/*======================================================================
This tries to determine if a card has a sensible CIS. It returns
the number of tuples in the CIS, or 0 if the CIS looks bad. The
checks include making sure several critical tuples are present and
valid; seeing if the total number of tuples is reasonable; and
looking for tuples that use reserved codes.
======================================================================*/
int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
{
tuple_t *tuple;
cisparse_t *p;
int ret, reserved, dev_ok = 0, ident_ok = 0;
if (!s)
return CS_BAD_HANDLE;
tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
if (tuple == NULL)
return CS_OUT_OF_RESOURCE;
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (p == NULL) {
kfree(tuple);
return CS_OUT_OF_RESOURCE;
}
info->Chains = reserved = 0;
tuple->DesiredTuple = RETURN_FIRST_TUPLE;
tuple->Attributes = TUPLE_RETURN_COMMON;
ret = pccard_get_first_tuple(s, function, tuple);
if (ret != CS_SUCCESS)
goto done;
/* First tuple should be DEVICE; we should really have either that
or a CFTABLE_ENTRY of some sort */
if ((tuple->TupleCode == CISTPL_DEVICE) ||
(pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
(pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
dev_ok++;
/* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
tuple, for card identification. Certain old D-Link and Linksys
cards have only a broken VERS_2 tuple; hence the bogus test. */
if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
(pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
(pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
ident_ok++;
if (!dev_ok && !ident_ok)
goto done;
for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
ret = pccard_get_next_tuple(s, function, tuple);
if (ret != CS_SUCCESS) break;
if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
reserved++;
}
if ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
((!dev_ok || !ident_ok) && (info->Chains > 10)))
info->Chains = 0;
done:
kfree(tuple);
kfree(p);
return CS_SUCCESS;
}
EXPORT_SYMBOL(pccard_validate_cis);
Reference in New Issue View Git Blame Copy Permalink