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|
/* $XFree86$ */
/*
* XFree86 int10 module
* execute BIOS int 10h calls in x86 real mode environment
* Copyright 1999 Egbert Eich
*/
#include "xf86.h"
#include "xf86_ansic.h"
#include "compiler.h"
#define _INT10_PRIVATE
#include "xf86int10.h"
#include "int10Defines.h"
#define REG pInt
xf86Int10InfoPtr Int10Current = NULL;
static int int1A_handler(xf86Int10InfoPtr pInt);
#ifndef _PC
static int int42_handler(xf86Int10InfoPtr pInt);
#endif
static int intE6_handler(xf86Int10InfoPtr pInt);
static PCITAG findPci(xf86Int10InfoPtr pInt, unsigned short bx);
static CARD32 pciSlotBX(pciVideoPtr pvp);
int
int_handler(xf86Int10InfoPtr pInt)
{
int num = pInt->num;
int ret = 0;
switch (num) {
#ifndef _PC
case 0x10:
case 0x42:
case 0x6D:
if (getIntVect(pInt, num) == I_S_DEFAULT_INT_VECT)
ret = int42_handler(pInt);
break;
#endif
case 0x1A:
ret = int1A_handler(pInt);
break;
case 0xe6:
ret = intE6_handler(pInt);
break;
default:
break;
}
if (!ret)
ret = run_bios_int(num, pInt);
if (!ret) {
xf86DrvMsg(pInt->scrnIndex, X_ERROR,
"Halting on int 0x%2.2x!\n", num);
dump_registers(pInt);
stack_trace(pInt);
}
return ret;
}
#ifndef _PC
/*
* This is derived from a number of PC system BIOS'es. The intent here is to
* provide very primitive video support, before an EGA/VGA BIOS installs its
* own interrupt vector. Here, "Ignored" calls should remain so. "Not
* Implemented" denotes functionality that can be implemented should the need
* arise. What are "Not Implemented" throughout are video memory accesses.
* Also, very little input validity checking is done here.
*/
static int
int42_handler(xf86Int10InfoPtr pInt)
{
switch (X86_AH) {
case 0x00:
/* Set Video Mode */
/* Enter: AL = video mode number */
/* Leave: Nothing */
/* Implemented (except for clearing the screen) */
{ /* Localise */
IOADDRESS ioport;
int i;
CARD16 int1d, regvals, tmp;
CARD8 mode, cgamode, cgacolour;
/*
* Ignore all mode numbers but 0x00-0x13. Some systems also ignore
* 0x0B and 0x0C, but don't do that here.
*/
if (X86_AL > 0x13)
break;
/*
* You didn't think that was really the mode set, did you? There
* are only so many slots in the video parameter table...
*/
mode = X86_AL;
ioport = 0x03D4;
switch (MEM_RB(pInt, 0x0410) & 0x30) {
case 0x30: /* MDA */
mode = 0x07; /* Force mode to 0x07 */
ioport = 0x03B4;
break;
case 0x10: /* CGA 40x25 */
if (mode >= 0x07)
mode = 0x01;
break;
case 0x20: /* CGA 80x25 (MCGA?) */
if (mode >= 0x07)
mode = 0x03;
break;
case 0x00: /* EGA/VGA */
if (mode >= 0x07) /* Don't try MDA timings */
mode = 0x01; /* !?!?! */
break;
}
/* Locate data in video parameter table */
int1d = MEM_RW(pInt, 0x1d << 2);
regvals = ((mode >> 1) << 4) + int1d;
cgacolour = 0x30;
if (mode == 0x06) {
regvals -= 0x10;
cgacolour = 0x3F;
}
/** Update BIOS Data Area **/
/* Video mode */
MEM_WB(pInt, 0x0449, mode);
/* Columns */
tmp = MEM_RB(pInt, mode + int1d + 0x48);
MEM_WW(pInt, 0x044A, tmp);
/* Page length */
tmp = MEM_RW(pInt, (mode & 0x06) + int1d + 0x40);
MEM_WW(pInt, 0x044C, tmp);
/* Start Address */
MEM_WW(pInt, 0x044E, 0);
/* Cursor positions, one for each display page */
for (i = 0x0450; i < 0x0460; i += 2)
MEM_WW(pInt, i, 0);
/* Cursor start & end scanlines */
tmp = MEM_RB(pInt, regvals + 0x0B);
MEM_WB(pInt, 0x0460, tmp);
tmp = MEM_RB(pInt, regvals + 0x0A);
MEM_WB(pInt, 0x0461, tmp);
/* Current display page number */
MEM_WB(pInt, 0x0462, 0);
/* CRTC I/O address */
MEM_WW(pInt, 0x0463, ioport);
/* CGA Mode register value */
cgamode = MEM_RB(pInt, mode + int1d + 0x50);
MEM_WB(pInt, 0x0465, cgamode);
/* CGA Colour register value */
MEM_WB(pInt, 0x0466, cgacolour);
/* Rows */
MEM_WB(pInt, 0x0484, (25 - 1));
/* Remap I/O port number into its domain */
ioport += pInt->ioBase;
/* Programme the mode */
outb(ioport + 4, cgamode & 0x37); /* Turn off screen */
for (i = 0; i < 0x10; i++) {
tmp = MEM_RB(pInt, regvals + i);
outb(ioport, i);
outb(ioport + 1, tmp);
}
outb(ioport + 5, cgacolour); /* Select colour mode */
outb(ioport + 4, cgamode); /* Turn on screen */
}
break;
case 0x01:
/* Set Cursor Type */
/* Enter: CH = starting line for cursor */
/* CL = ending line for cursor */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
IOADDRESS ioport = MEM_RW(pInt, 0x0463) + pInt->ioBase;
MEM_WB(pInt, 0x0460, X86_CL);
MEM_WB(pInt, 0x0461, X86_CH);
outb(ioport, 0x0A);
outb(ioport + 1, X86_CH);
outb(ioport, 0x0B);
outb(ioport + 1, X86_CL);
}
break;
case 0x02:
/* Set Cursor Position */
/* Enter: BH = display page number */
/* DH = row */
/* DL = column */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
IOADDRESS ioport;
CARD16 offset;
MEM_WB(pInt, (X86_BH << 1) + 0x0450, X86_DL);
MEM_WB(pInt, (X86_BH << 1) + 0x0451, X86_DH);
if (X86_BH != MEM_RB(pInt, 0x0462))
break;
offset = (X86_DH * MEM_RW(pInt, 0x044A)) + X86_DL;
offset += MEM_RW(pInt, 0x044E) << 1;
ioport = MEM_RW(pInt, 0x0463) + pInt->ioBase;
outb(ioport, 0x0E);
outb(ioport + 1, offset >> 8);
outb(ioport, 0x0F);
outb(ioport + 1, offset & 0xFF);
}
break;
case 0x03:
/* Get Cursor Position */
/* Enter: BH = display page number */
/* Leave: CH = starting line for cursor */
/* CL = ending line for cursor */
/* DH = row */
/* DL = column */
/* Implemented */
{ /* Localise */
X86_CL = MEM_RB(pInt, 0x0460);
X86_CH = MEM_RB(pInt, 0x0461);
X86_DL = MEM_RB(pInt, (X86_BH << 1) + 0x0450);
X86_DH = MEM_RB(pInt, (X86_BH << 1) + 0x0451);
}
break;
case 0x04:
/* Get Light Pen Position */
/* Enter: Nothing */
/* Leave: AH = 0x01 (down/triggered) or 0x00 (not) */
/* BX = pixel column */
/* CX = pixel row */
/* DH = character row */
/* DL = character column */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x04) -- Get Light Pen Position\n", pInt->num);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
X86_AH = X86_BX = X86_CX = X86_DX = 0;
}
break;
case 0x05:
/* Set Display Page */
/* Enter: AL = display page number */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
IOADDRESS ioport = MEM_RW(pInt, 0x0463) + pInt->ioBase;
CARD16 start;
CARD8 x, y;
/* Calculate new start address */
MEM_WB(pInt, 0x0462, X86_AL);
start = X86_AL * MEM_RW(pInt, 0x044C);
MEM_WW(pInt, 0x044E, start);
start <<= 1;
/* Update start address */
outb(ioport, 0x0C);
outb(ioport + 1, start >> 8);
outb(ioport, 0x0D);
outb(ioport + 1, start & 0xFF);
/* Switch cursor position */
y = MEM_RB(pInt, (X86_AL << 1) + 0x0450);
x = MEM_RB(pInt, (X86_AL << 1) + 0x0451);
start += (y * MEM_RW(pInt, 0x044A)) + x;
/* Update cursor position */
outb(ioport, 0x0E);
outb(ioport + 1, start >> 8);
outb(ioport, 0x0F);
outb(ioport + 1, start & 0xFF);
}
break;
case 0x06:
/* Initialise or Scroll Window Up */
/* Enter: AL = lines to scroll up */
/* BH = attribute for blank */
/* CH = upper y of window */
/* CL = left x of window */
/* DH = lower y of window */
/* DL = right x of window */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x06) -- Initialise or Scroll Window Up\n",
pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
" AL=0x%2.2x, BH=0x%2.2x,"
" CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x07:
/* Initialise or Scroll Window Down */
/* Enter: AL = lines to scroll down */
/* BH = attribute for blank */
/* CH = upper y of window */
/* CL = left x of window */
/* DH = lower y of window */
/* DL = right x of window */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x07) -- Initialise or Scroll Window Down\n",
pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
" AL=0x%2.2x, BH=0x%2.2x,"
" CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x08:
/* Read Character and Attribute at Cursor */
/* Enter: BH = display page number */
/* Leave: AH = attribute */
/* AL = character */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x08) -- Read Character and Attribute at"
" Cursor\n", pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
"BH=0x%2.2x\n", X86_BH);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
X86_AX = 0;
}
break;
case 0x09:
/* Write Character and Attribute at Cursor */
/* Enter: AL = character */
/* BH = display page number */
/* BL = attribute (text) or colour (graphics) */
/* CX = replication count */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x09) -- Write Character and Attribute at"
" Cursor\n", pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
X86_AL, X86_BH, X86_BL, X86_CX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0a:
/* Write Character at Cursor */
/* Enter: AL = character */
/* BH = display page number */
/* BL = colour */
/* CX = replication count */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0A) -- Write Character at Cursor\n",
pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
X86_AL, X86_BH, X86_BL, X86_CX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0b:
/* Set Palette, Background or Border */
/* Enter: BH = 0x00 or 0x01 */
/* BL = colour or palette (respectively) */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
IOADDRESS ioport = MEM_RW(pInt, 0x0463) + 5 + pInt->ioBase;
CARD8 cgacolour = MEM_RB(pInt, 0x0466);
if (X86_BH) {
cgacolour &= 0xDF;
cgacolour |= (X86_BL & 0x01) << 5;
} else {
cgacolour &= 0xE0;
cgacolour |= X86_BL & 0x1F;
}
MEM_WB(pInt, 0x0466, cgacolour);
outb(ioport, cgacolour);
}
break;
case 0x0c:
/* Write Graphics Pixel */
/* Enter: AL = pixel value */
/* BH = display page number */
/* CX = column */
/* DX = row */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0C) -- Write Graphics Pixel\n", pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, CX=0x%4.4x, DX=0x%4.4x\n",
X86_AL, X86_BH, X86_CX, X86_DX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0d:
/* Read Graphics Pixel */
/* Enter: BH = display page number */
/* CX = column */
/* DX = row */
/* Leave: AL = pixel value */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0D) -- Read Graphics Pixel\n", pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
"BH=0x%2.2x, CX=0x%4.4x, DX=0x%4.4x\n",
X86_BH, X86_CX, X86_DX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
X86_AL = 0;
}
break;
case 0x0e:
/* Write Character in Teletype Mode */
/* Enter: AL = character */
/* BH = display page number */
/* BL = foreground colour */
/* Leave: Nothing */
/* Not Implemented */
/* WARNING: Emulation of BEL characters will require */
/* emulation of RTC and PC speaker I/O. */
/* Also, this recurses through int 0x10 */
/* which might or might not have been */
/* installed yet. */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0E) -- Write Character in Teletype Mode\n",
pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x\n",
X86_AL, X86_BH, X86_BL);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0f:
/* Get Video Mode */
/* Enter: Nothing */
/* Leave: AH = number of columns */
/* AL = video mode number */
/* BH = display page number */
/* Implemented */
{ /* Localise */
X86_AH = MEM_RW(pInt, 0x044A);
X86_AL = MEM_RB(pInt, 0x0449);
X86_BH = MEM_RB(pInt, 0x0462);
}
break;
case 0x10:
/* Colour Control (subfunction in AL) */
/* Enter: Various */
/* Leave: Various */
/* Ignored */
break;
case 0x11:
/* Font Control (subfunction in AL) */
/* Enter: Various */
/* Leave: Various */
/* Ignored */
break;
case 0x12:
/* Miscellaneous (subfunction in BL) */
/* Enter: Various */
/* Leave: Various */
/* Ignored. Previous code here optionally allowed */
/* the enabling and disabling of VGA, but no system */
/* BIOS I've come across actually implements it. */
break;
case 0x13:
/* Write String in Teletype Mode */
/* Enter: AL = write mode */
/* BL = attribute (if (AL & 0x02) == 0) */
/* CX = string length */
/* DH = row */
/* DL = column */
/* ES:BP = string segment:offset */
/* Leave: Nothing */
/* Not Implemented */
/* WARNING: Emulation of BEL characters will require */
/* emulation of RTC and PC speaker I/O. */
/* Also, this recurses through int 0x10 */
/* which might or might not have been */
/* installed yet. */
{ /* Localise */
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x13) -- Write String in Teletype Mode\n",
pInt->num);
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x,"
" DH=0x%2.2x, DL=0x%2.2x, ES:BP=0x%4.4x:0x%4.4x\n",
X86_AL, X86_BL, X86_CX, X86_DH, X86_DL, X86_ES, X86_BP);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
default:
/* Various extensions */
/* Enter: Various */
/* Leave: Various */
/* Ignored */
break;
}
return 1;
}
#endif
#define SUCCESSFUL 0x00
#define DEVICE_NOT_FOUND 0x86
#define BAD_REGISTER_NUMBER 0x87
static int
int1A_handler(xf86Int10InfoPtr pInt)
{
PCITAG tag;
pciVideoPtr pvp;
if (!(pvp = xf86GetPciInfoForEntity(pInt->entityIndex)))
return 0; /* oops */
#ifdef PRINT_INT
ErrorF("int 0x1a: ax=0x%x bx=0x%x cx=0x%x dx=0x%x di=0x%x es=0x%x\n",
X86_EAX, X86_EBX, X86_ECX, X86_EDX, X86_EDI, X86_ESI);
#endif
switch (X86_AX) {
case 0xb101:
X86_EAX &= 0xFF00; /* no config space/special cycle support */
X86_EDX = 0x20494350; /* " ICP" */
X86_EBX = 0x0210; /* Version 2.10 */
X86_ECX &= 0xFF00;
X86_ECX |= (pciNumBuses & 0xFF); /* Max bus number in system */
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
#ifdef PRINT_INT
ErrorF("ax=0x%x dx=0x%x bx=0x%x cx=0x%x flags=0x%x\n",
X86_EAX, X86_EDX, X86_EBX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb102:
if (X86_DX == pvp->vendor && X86_CX == pvp->chipType && X86_ESI == 0) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
X86_EBX = pciSlotBX(pvp);
}
#ifdef SHOW_ALL_DEVICES
else
if ((pvp = xf86FindPciDeviceVendor(X86_EDX, X86_ECX, X86_ESI, pvp))) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
X86_EBX = pciSlotBX(pvp);
}
#endif
else {
X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x bx=0x%x flags=0x%x\n", X86_EAX, X86_EBX, X86_EFLAGS);
#endif
return 1;
case 0xb103:
if (X86_CL == pvp->interface &&
X86_CH == pvp->subclass &&
((X86_ECX & 0xFFFF0000) >> 16) == pvp->class) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EBX = pciSlotBX(pvp);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
}
#ifdef SHOW_ALL_DEVICES
else if ((pvp = xf86FindPciClass(X86_CL, X86_CH,
(X86_ECX & 0xffff0000) >> 16,
X86_ESI, pvp))) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
X86_EBX = pciSlotBX(pvp);
}
#endif
else {
X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
case 0xb108:
if ((tag = findPci(pInt, X86_EBX)) != PCI_NOT_FOUND) {
X86_CL = pciReadByte(tag, X86_EDI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
} else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb109:
if ((tag = findPci(pInt, X86_EBX)) != PCI_NOT_FOUND) {
X86_CX = pciReadWord(tag, X86_EDI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
} else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb10a:
if ((tag = findPci(pInt, X86_EBX)) != PCI_NOT_FOUND) {
X86_ECX = pciReadLong(tag, X86_EDI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
} else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb10b:
if ((tag = findPci(pInt, X86_EBX)) != PCI_NOT_FOUND) {
pciWriteByte(tag, X86_EDI, X86_CL);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
} else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
case 0xb10c:
if ((tag = findPci(pInt, X86_EBX)) != PCI_NOT_FOUND) {
pciWriteWord(tag, X86_EDI, X86_CX);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
} else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
case 0xb10d:
if ((tag = findPci(pInt, X86_EBX)) != PCI_NOT_FOUND) {
pciWriteLong(tag, X86_EDI, X86_ECX);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
} else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long)0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
default:
xf86DrvMsgVerb(pInt->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x1a subfunction\n");
dump_registers(pInt);
if (xf86GetVerbosity() > 3)
stack_trace(pInt);
return 0;
}
}
static PCITAG
findPci(xf86Int10InfoPtr pInt, unsigned short bx)
{
int bus = ((pInt->Tag >> 16) & ~0x00FF) | ((bx >> 8) & 0x00FF);
int dev = (bx >> 3) & 0x1F;
int func = bx & 0x7;
if (xf86IsPciDevPresent(bus, dev, func))
return pciTag(bus, dev, func);
return PCI_NOT_FOUND;
}
static CARD32
pciSlotBX(pciVideoPtr pvp)
{
return ((pvp->bus << 8) & 0x00FF00) | (pvp->device << 3) | (pvp->func);
}
/*
* handle initialization
*/
static int
intE6_handler(xf86Int10InfoPtr pInt)
{
pciVideoPtr pvp;
if ((pvp = xf86GetPciInfoForEntity(pInt->entityIndex)))
X86_AX = (pvp->bus << 8) | (pvp->device << 3) | (pvp->func & 0x7);
pushw(pInt, X86_CS);
pushw(pInt, X86_IP);
X86_CS = pInt->BIOSseg;
X86_EIP = 0x0003;
X86_ES = 0; /* standard pc es */
return 1;
}
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