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yaml
---
r: 23388
b: refs/heads/master
c: ef5a4c8
h: refs/heads/master
v: v3
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Al Viro authored and Linus Torvalds committed Mar 24, 2006
1 parent ac3c0db commit eaa2d40
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Showing 2 changed files with 24 additions and 16 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: e8c96f8c29d89af0c13dc2819a9a00575846ca18
refs/heads/master: ef5a4c8b04867fa8ed9eaf311c4ed0c57c589b6d
38 changes: 23 additions & 15 deletions trunk/drivers/char/toshiba.c
Original file line number Diff line number Diff line change
Expand Up @@ -355,14 +355,14 @@ static void tosh_set_fn_port(void)
/*
* Get the machine identification number of the current model
*/
static int tosh_get_machine_id(void)
static int tosh_get_machine_id(void __iomem *bios)
{
int id;
SMMRegisters regs;
unsigned short bx,cx;
unsigned long address;

id = (0x100*(int) isa_readb(0xffffe))+((int) isa_readb(0xffffa));
id = (0x100*(int) readb(bios+0xfffe))+((int) readb(bios+0xfffa));

/* do we have a SCTTable machine identication number on our hands */

Expand All @@ -388,12 +388,12 @@ static int tosh_get_machine_id(void)

/* now twiddle with our pointer a bit */

address = 0x000f0000+bx;
cx = isa_readw(address);
address = 0x000f0009+bx+cx;
cx = isa_readw(address);
address = 0x000f000a+cx;
cx = isa_readw(address);
address = bx;
cx = readw(bios + address);
address = 9+bx+cx;
cx = readw(bios + address);
address = 0xa+cx;
cx = readw(bios + address);

/* now construct our machine identification number */

Expand All @@ -416,13 +416,18 @@ static int tosh_probe(void)
int i,major,minor,day,year,month,flag;
unsigned char signature[7] = { 0x54,0x4f,0x53,0x48,0x49,0x42,0x41 };
SMMRegisters regs;
void __iomem *bios = ioremap(0xf0000, 0x10000);

if (!bios)
return -ENOMEM;

/* extra sanity check for the string "TOSHIBA" in the BIOS because
some machines that are not Toshiba's pass the next test */

for (i=0;i<7;i++) {
if (isa_readb(0xfe010+i)!=signature[i]) {
if (readb(bios+0xe010+i)!=signature[i]) {
printk("toshiba: not a supported Toshiba laptop\n");
iounmap(bios);
return -ENODEV;
}
}
Expand All @@ -438,6 +443,7 @@ static int tosh_probe(void)

if ((flag==1) || ((regs.eax & 0xff00)==0x8600)) {
printk("toshiba: not a supported Toshiba laptop\n");
iounmap(bios);
return -ENODEV;
}

Expand All @@ -447,19 +453,19 @@ static int tosh_probe(void)

/* next get the machine ID of the current laptop */

tosh_id = tosh_get_machine_id();
tosh_id = tosh_get_machine_id(bios);

/* get the BIOS version */

major = isa_readb(0xfe009)-'0';
minor = ((isa_readb(0xfe00b)-'0')*10)+(isa_readb(0xfe00c)-'0');
major = readb(bios+0xe009)-'0';
minor = ((readb(bios+0xe00b)-'0')*10)+(readb(bios+0xe00c)-'0');
tosh_bios = (major*0x100)+minor;

/* get the BIOS date */

day = ((isa_readb(0xffff5)-'0')*10)+(isa_readb(0xffff6)-'0');
month = ((isa_readb(0xffff8)-'0')*10)+(isa_readb(0xffff9)-'0');
year = ((isa_readb(0xffffb)-'0')*10)+(isa_readb(0xffffc)-'0');
day = ((readb(bios+0xfff5)-'0')*10)+(readb(bios+0xfff6)-'0');
month = ((readb(bios+0xfff8)-'0')*10)+(readb(bios+0xfff9)-'0');
year = ((readb(bios+0xfffb)-'0')*10)+(readb(bios+0xfffc)-'0');
tosh_date = (((year-90) & 0x1f)<<10) | ((month & 0xf)<<6)
| ((day & 0x1f)<<1);

Expand All @@ -476,6 +482,8 @@ static int tosh_probe(void)
if ((tosh_id==0xfccb) || (tosh_id==0xfccc))
tosh_fan = 1;

iounmap(bios);

return 0;
}

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