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|
#include "kernelInterface.h"
#include "direct.h"
#include "hci.h"
#include "sci.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
/*
code for direct access to the Toshiba BIOS registers- this does not use
/dev/toshiba, and most likely will not work under ACPI.
*/
int dHciFunction(SMMRegisters *reg)
{
int id=0;
unsigned int eax,ebx,ecx,edx,esi,edi;
eax = reg->eax;
ebx = reg->ebx;
ecx = reg->ecx;
edx = reg->edx;
esi = reg->esi;
edi = reg->edi;
/* emulate the HCI fan function for the Portage 610 and Tecra 700 */
if ((id==0xfccb) && (ebx==HCI_FAN)) {
asm("movw %1,%%ax\n\t" \
"movw %2,%%cx\n\t" \
"cli\n\t" \
"movb $0xbe,%%al\n\t" \
"outb %%al,$0xe4\n\t" \
"inb $0xe5,%%al\n\t" \
"cmpb $0xfe,%%ah\n\t" \
"je 3f\n\t" \
"cmpw $0x0001,%%cx\n\t" \
"jne 1f\n\t" \
"andb $0xfe,%%al\n\t" \
"jmp 2f\n\t" \
"1: orb $0x01,%%al\n\t" \
"2: movb %%al,%%ah\n\t" \
"movb $0xbe,%%al\n\t" \
"outb %%al,$0xe4\n\t" \
"movb %%ah,%%al\n\t" \
"outb %%al,$0xe5\n\t" \
"3: sti\n\t" \
"andw $0x0001,%%ax\n\t" \
"movw %%ax,%0\n" \
:"=m" (ecx) : "m" (eax), "m" (ecx) : "memory" );
ecx = (ecx==0x00) ? 0x01:0x00;
eax = 0x0000;
} else if ((id==0xfccb) && (ebx==HCI_FAN)) {
asm("movw %1,%%ax\n\t" \
"movw %2,%%cx\n\t" \
"cli\n\t" \
"movw $0x00e4,%%dx\n\t" \
"movb $0xe0,%%al\n\t" \
"outb %%al,%%dx\n\t" \
"incw %%dx\n\t" \
"inb %%dx,%%al\n\t" \
"cmpb $0xfe,%%ah\n\t" \
"je 3f\n\t" \
"cmpw $0x0001,%%cx\n\t" \
"jne 1f\n\t" \
"orw $0x0001,%%ax\n\t" \
"jmp 2f\n\t" \
"1: andw $0xfffe,%%ax\n\t" \
"2: decw %%dx\n\t" \
"movb %%al,%%ah\n\t" \
"movb $0xe0,%%al\n\t" \
"outw %%ax,%%dx\n\t" \
"3: sti\n\t" \
"andw $0x0001,%%ax\n\t" \
"movw %%ax,%0\n" \
:"=m" (ecx) : "m" (eax), "m" (ecx) : "memory" );
eax = 0x0000;
} else {
/* note that an extra dummy push onto the stack is made.
* Somehow this entry sometimes get overwritten causing an
* eventual segfault.
*/
asm("# load the values into the registers\n\t" \
"pushl %%eax\n\t" \
"pushl %%eax\n\t" \
"movl 0(%%eax),%%edx\n\t" \
"pushl %%edx\n\t" \
"movl 4(%%eax),%%ebx\n\t" \
"movl 8(%%eax),%%ecx\n\t" \
"movl 12(%%eax),%%edx\n\t" \
"movl 16(%%eax),%%esi\n\t" \
"movl 20(%%eax),%%edi\n\t" \
"popl %%eax\n\t" \
"# call the System Management mode\n\t" \
"inb $0xb2,%%al\n\t" \
"# fill out the memory with the values in the registers\n\t" \
"xchgl %%eax,(%%esp)\n\t" \
"popl %%eax\n\t" \
"xchgl %%eax,(%%esp)\n\t" \
"movl %%ebx,4(%%eax)\n\t" \
"movl %%ecx,8(%%eax)\n\t" \
"movl %%edx,12(%%eax)\n\t" \
"movl %%esi,16(%%eax)\n\t" \
"movl %%edi,20(%%eax)\n\t" \
"popl %%edx\n\t" \
"movl %%edx,0(%%eax)\n\t" \
:
: "eax" (reg)
: "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory", "cc");
}
return (int) (reg->eax & 0xff00)>>8;
} /* dHciFunction */
/*
* Return the BIOS version of the laptop
*
* I may or may not follow the Toshiba version of this function. The
* Toshiba function would appear to read from this area of memory, but
* exactly what it does I am not sure. This implemenation is impirically
* based on the contents of these memory locations on my Satellite Pro
* 400CS and Libretto 50CT. I have confirmed that it returns the correct
* information on a Tecra 750CDT and a T4900 as well.
*/
int
dHciGetBiosVersion(void)
{
int id = 0;
int device,major,minor;
unsigned char *mem;
if ((device = open("/dev/mem", O_RDWR))==-1)
return HCI_FAILURE;
mem = mmap(0, 0x1000, PROT_READ, MAP_SHARED, device, 0xfe000);
if (mem==(unsigned char *)-1)
return HCI_FAILURE;
major = (char) mem[0x0009]-'0';
minor = (((char) mem[0x000b]-'0')*10)+((char) mem[0x000c]-'0');
munmap(mem, 0x1000);
close(device);
id = (major*0x100)+minor;
return id;
} /* dHciGetBiosVersion */
int
dHciGetMachineID(int *id)
{
int device;
unsigned char *mem;
unsigned short bx;
// unsigned char fl;
if ((device = open("/dev/mem", O_RDWR))==-1)
return HCI_FAILURE;
mem = mmap(0, 0x100000, PROT_READ, MAP_SHARED, device,0); // 0xfe000);
if (mem==(unsigned char *)-1)
return HCI_FAILURE;
*id = (0x100*((int) mem[0xffffe]))+((int) mem[0xffffa]);
/* do we have a SCTTable machine identication number on our hands */
if (*id==0xfc2f) {
unsigned char ah;
unsigned short cx;
unsigned long address;
/* start by getting a pointer into the BIOS */
asm ("movw $0xc000,%%ax\n\t" \
"movw $0x0000,%%bx\n\t" \
"movw $0x0000,%%cx\n\t" \
"inb $0xb2,%%al\n\t" \
"movb %%ah,%%al\n" \
: "=b" (bx), "=a" (ah) : : "%ecx");
/* printf("bx: %x mem: %x\n",bx,mem); */
/* At this point in the Toshiba routines under MS Windows
the bx register holds 0xe6f5. However my code is producing
a different value! For the time being I will just fudge the
value. This has been verified on a Satellite Pro 430CDT,
Tecra 750CDT, Tecra 780DVD and Satellite 310CDT. */
bx = 0xe6f5;
/* now twiddle with our pointer a bit */
address = 0x000f0000+bx;
// cx = readw(address);
// address = bx - 0xe000;
cx = *(unsigned short*)(mem+address);
address = 0x000f0009+bx+cx;
// address = 0x9+bx+cx - 0xe000;
// cx = readw(address);
cx = *(unsigned short*)(mem+address);
address = 0x000f000a+cx;
// address = 0xa+cx - 0xe000;
// cx = readw(address);
cx = *(unsigned short*)(mem+address);
/* now construct our machine identification number */
*id = ((cx & 0xff)<<8)+((cx & 0xff00)>>8);
munmap(mem, 0x1000);
close(device);
}
return HCI_SUCCESS;
} /* dHciGetMachineID */
/*
* Is this a supported Machine? (ie. is it a Toshiba)
*/
int
dSciSupportCheck(int *version)
{
unsigned short dx;
unsigned char ah;
asm ("pushl %%eax\n\t" \
"pushl %%ebx\n\t" \
"pushl %%ecx\n\t" \
"pushl %%edx\n\t" \
"movw $0xf0f0,%%ax\n\t" \
"movw $0x0000,%%bx\n\t" \
"movw $0x0000,%%cx\n\t" \
"inb $0xb2,%%al\n\t" \
"popl %%ecx\n\t" \
"popl %%ebx\n\t" \
"popl %%eax\n" \
:"=d" (dx), "=a" (ah) : : "memory" );
*version = (int) dx;
return (int) (ah & 0xff);
} /* dSciSupportCheck */
int
dSciOpenInterface(void)
{
unsigned char ah;
asm ("pushl %%eax\n\t" \
"pushl %%ebx\n\t" \
"pushl %%ecx\n\t" \
"movw $0xf1f1,%%ax\n\t" \
"movw $0x0000,%%bx\n\t" \
"movw $0x0000,%%cx\n\t" \
"inb $0xb2,%%al\n\t" \
"movb %%ah,%0\n\t" \
"popl %%ecx\n\t" \
"popl %%ebx\n\t" \
"popl %%eax\n" \
:"=m" (ah) : : "memory" );
return (int) ah;
} /* dSciOpenInterface */
int
dSciCloseInterface()
{
unsigned char ah;
asm ("pushl %%eax\n\t" \
"pushl %%ebx\n\t" \
"pushl %%ecx\n\t" \
"movw $0xf2f2,%%ax\n\t" \
"movw $0x0000,%%bx\n\t" \
"movw $0x0000,%%cx\n\t" \
"inb $0xb2,%%al\n\t" \
"popl %%ecx\n\t" \
"popl %%ebx\n\t" \
"popl %%eax\n" \
:"=a" (ah) : : "memory" );
return (int) (ah & 0xff);
} /* dSciCloseInterface */
int
dSciGet(SMMRegisters *reg)
{
unsigned short ax,bx,cx,dx;
// note confusing mapping
//ax = 0;
bx = reg->ebx;
cx = reg->ecx;
dx = reg->edx;
asm ("pushl %%esi\n\t" \
"pushl %%edi\n\t" \
"movw $0xf3f3,%%ax\n\t" \
"inb $0xb2,%%al\n\t" \
"popl %%edi\n\t" \
"popl %%esi\n" \
:"=a" (ax), "=b" (bx), "=c" (cx), "=d" (dx) \
:"b" (bx), "c" (cx), "d" (dx) \
: "memory" );
reg->esi = (ax & 0xff);
reg->ebx = bx;
reg->ecx = cx;
reg->edx = dx;
return (int) (ax & 0xff00)>>8;
} /* dSciGet */
/*
* Set the setting of a given mode of the laptop
*/
int
dSciSet(SMMRegisters *reg)
{
int eax;
reg->eax = 0xf4f4;
asm ("# load the values into the registers\n\t" \
"pushl %%eax\n\t" \
"pushl %%eax\n\t" \
"movl 0(%%eax),%%edx\n\t" \
"push %%edx\n\t" \
"movl 4(%%eax),%%ebx\n\t" \
"movl 8(%%eax),%%ecx\n\t" \
"movl 12(%%eax),%%edx\n\t" \
"movl 16(%%eax),%%esi\n\t" \
"movl 20(%%eax),%%edi\n\t" \
"popl %%eax\n\t" \
"# call the System Management mode\n\t" \
"inb $0xb2,%%al\n\t"
"# fill out the memory with the values in the registers\n\t" \
"xchgl %%eax,(%%esp)\n\t" \
"popl %%eax\n\t" \
"xchgl %%eax,(%%esp)\n\t"
"movl %%ebx,4(%%eax)\n\t" \
"movl %%ecx,8(%%eax)\n\t" \
"movl %%edx,12(%%eax)\n\t" \
"movl %%esi,16(%%eax)\n\t" \
"movl %%edi,20(%%eax)\n\t" \
"popl %%edx\n\t" \
"movl %%edx,0(%%eax)\n\t" \
"# setup the return value to the carry flag\n\t" \
"lahf\n\t" \
"shrl $8,%%eax\n\t" \
"andl $1,%%eax\n" \
: "=a" (eax)
: "a" (reg)
: "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory");
return eax;
} /* dSciSet */
|
