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yaml
---
r: 3226
b: refs/heads/master
c: 1249c51
h: refs/heads/master
v: v3
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Andrey Panin authored and Linus Torvalds committed Jun 25, 2005
1 parent 3b8311c commit 09349e5
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Showing 2 changed files with 71 additions and 94 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: b625883f24d018c989173aeb727f6de954fb154d
refs/heads/master: 1249c5138f573890eae0c01f13d627094edcd55c
163 changes: 70 additions & 93 deletions trunk/arch/i386/kernel/dmi_scan.c
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Original file line number Diff line number Diff line change
@@ -1,22 +1,15 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/pm.h>
#include <asm/system.h>
#include <linux/dmi.h>
#include <linux/bootmem.h>


struct dmi_header
{
u8 type;
u8 length;
u16 handle;
struct dmi_header {
u8 type;
u8 length;
u16 handle;
};

#undef DMI_DEBUG
Expand All @@ -29,15 +22,13 @@ struct dmi_header

static char * __init dmi_string(struct dmi_header *dm, u8 s)
{
u8 *bp=(u8 *)dm;
bp+=dm->length;
if(!s)
u8 *bp = ((u8 *) dm) + dm->length;

if (!s)
return "";
s--;
while(s>0 && *bp)
{
bp+=strlen(bp);
bp++;
while (s > 0 && *bp) {
bp += strlen(bp) + 1;
s--;
}
return bp;
Expand All @@ -47,16 +38,14 @@ static char * __init dmi_string(struct dmi_header *dm, u8 s)
* We have to be cautious here. We have seen BIOSes with DMI pointers
* pointing to completely the wrong place for example
*/
static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dmi_header *))
static int __init dmi_table(u32 base, int len, int num,
void (*decode)(struct dmi_header *))
{
u8 *buf;
struct dmi_header *dm;
u8 *data;
int i=0;
u8 *buf, *data;
int i = 0;

buf = bt_ioremap(base, len);
if(buf==NULL)
if (buf == NULL)
return -1;

data = buf;
Expand All @@ -65,36 +54,34 @@ static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dm
* Stop when we see all the items the table claimed to have
* OR we run off the end of the table (also happens)
*/

while(i<num && data-buf+sizeof(struct dmi_header)<=len)
{
dm=(struct dmi_header *)data;
while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) {
struct dmi_header *dm = (struct dmi_header *)data;
/*
* We want to know the total length (formated area and strings)
* before decoding to make sure we won't run off the table in
* dmi_decode or dmi_string
*/
data+=dm->length;
while(data-buf<len-1 && (data[0] || data[1]))
data += dm->length;
while ((data - buf < len - 1) && (data[0] || data[1]))
data++;
if(data-buf<len-1)
if (data - buf < len - 1)
decode(dm);
data+=2;
data += 2;
i++;
}
bt_iounmap(buf, len);
return 0;
}


inline static int __init dmi_checksum(u8 *buf)
static int __init dmi_checksum(u8 *buf)
{
u8 sum=0;
u8 sum = 0;
int a;

for(a=0; a<15; a++)
sum+=buf[a];
return (sum==0);
for (a = 0; a < 15; a++)
sum += buf[a];

return sum == 0;
}

static int __init dmi_iterate(void (*decode)(struct dmi_header *))
Expand All @@ -110,28 +97,30 @@ static int __init dmi_iterate(void (*decode)(struct dmi_header *))
p = ioremap(0xF0000, 0x10000);
if (p == NULL)
return -1;

for (q = p; q < p + 0x10000; q += 16) {
memcpy_fromio(buf, q, 15);
if(memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf))
{
u16 num=buf[13]<<8|buf[12];
u16 len=buf[7]<<8|buf[6];
u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];
if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) {
u16 num = (buf[13] << 8) | buf[12];
u16 len = (buf[7] << 8) | buf[6];
u32 base = (buf[11] << 24) | (buf[10] << 16) |
(buf[9] << 8) | buf[8];

/*
* DMI version 0.0 means that the real version is taken from
* the SMBIOS version, which we don't know at this point.
*/
if(buf[14]!=0)
if (buf[14] != 0)
printk(KERN_INFO "DMI %d.%d present.\n",
buf[14]>>4, buf[14]&0x0F);
buf[14] >> 4, buf[14] & 0xF);
else
printk(KERN_INFO "DMI present.\n");

dmi_printk((KERN_INFO "%d structures occupying %d bytes.\n",
num, len));
dmi_printk((KERN_INFO "DMI table at 0x%08X.\n",
base));
if(dmi_table(base,len, num, decode)==0)
dmi_printk((KERN_INFO "DMI table at 0x%08X.\n", base));

if (dmi_table(base,len, num, decode) == 0)
return 0;
}
}
Expand All @@ -143,16 +132,17 @@ static char *dmi_ident[DMI_STRING_MAX];
/*
* Save a DMI string
*/

static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string)
{
char *d = (char*)dm;
char *p = dmi_string(dm, d[string]);
if(p==NULL || *p == 0)

if (p == NULL || *p == 0)
return;
if (dmi_ident[slot])
return;
dmi_ident[slot] = alloc_bootmem(strlen(p)+1);

dmi_ident[slot] = alloc_bootmem(strlen(p) + 1);
if(dmi_ident[slot])
strcpy(dmi_ident[slot], p);
else
Expand All @@ -166,48 +156,35 @@ static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string)
*/
static void __init dmi_decode(struct dmi_header *dm)
{
#ifdef DMI_DEBUG
u8 *data = (u8 *)dm;
#endif
u8 *data __attribute__((__unused__)) = (u8 *)dm;

switch(dm->type)
{
case 0:
dmi_printk(("BIOS Vendor: %s\n",
dmi_string(dm, data[4])));
dmi_save_ident(dm, DMI_BIOS_VENDOR, 4);
dmi_printk(("BIOS Version: %s\n",
dmi_string(dm, data[5])));
dmi_save_ident(dm, DMI_BIOS_VERSION, 5);
dmi_printk(("BIOS Release: %s\n",
dmi_string(dm, data[8])));
dmi_save_ident(dm, DMI_BIOS_DATE, 8);
break;
case 1:
dmi_printk(("System Vendor: %s\n",
dmi_string(dm, data[4])));
dmi_save_ident(dm, DMI_SYS_VENDOR, 4);
dmi_printk(("Product Name: %s\n",
dmi_string(dm, data[5])));
dmi_save_ident(dm, DMI_PRODUCT_NAME, 5);
dmi_printk(("Version: %s\n",
dmi_string(dm, data[6])));
dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6);
dmi_printk(("Serial Number: %s\n",
dmi_string(dm, data[7])));
dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7);
break;
case 2:
dmi_printk(("Board Vendor: %s\n",
dmi_string(dm, data[4])));
dmi_save_ident(dm, DMI_BOARD_VENDOR, 4);
dmi_printk(("Board Name: %s\n",
dmi_string(dm, data[5])));
dmi_save_ident(dm, DMI_BOARD_NAME, 5);
dmi_printk(("Board Version: %s\n",
dmi_string(dm, data[6])));
dmi_save_ident(dm, DMI_BOARD_VERSION, 6);
break;
switch(dm->type) {
case 0:
dmi_printk(("BIOS Vendor: %s\n", dmi_string(dm, data[4])));
dmi_save_ident(dm, DMI_BIOS_VENDOR, 4);
dmi_printk(("BIOS Version: %s\n", dmi_string(dm, data[5])));
dmi_save_ident(dm, DMI_BIOS_VERSION, 5);
dmi_printk(("BIOS Release: %s\n", dmi_string(dm, data[8])));
dmi_save_ident(dm, DMI_BIOS_DATE, 8);
break;
case 1:
dmi_printk(("System Vendor: %s\n", dmi_string(dm, data[4])));
dmi_save_ident(dm, DMI_SYS_VENDOR, 4);
dmi_printk(("Product Name: %s\n", dmi_string(dm, data[5])));
dmi_save_ident(dm, DMI_PRODUCT_NAME, 5);
dmi_printk(("Version: %s\n", dmi_string(dm, data[6])));
dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6);
dmi_printk(("Serial Number: %s\n", dmi_string(dm, data[7])));
dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7);
break;
case 2:
dmi_printk(("Board Vendor: %s\n", dmi_string(dm, data[4])));
dmi_save_ident(dm, DMI_BOARD_VENDOR, 4);
dmi_printk(("Board Name: %s\n", dmi_string(dm, data[5])));
dmi_save_ident(dm, DMI_BOARD_NAME, 5);
dmi_printk(("Board Version: %s\n", dmi_string(dm, data[6])));
dmi_save_ident(dm, DMI_BOARD_VERSION, 6);
break;
}
}

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