852 lines
27 KiB
C
852 lines
27 KiB
C
/*
|
|
* XFree86 int10 module
|
|
* execute BIOS int 10h calls in x86 real mode environment
|
|
* Copyright 1999 Egbert Eich
|
|
*/
|
|
|
|
#ifdef HAVE_XORG_CONFIG_H
|
|
#include <xorg-config.h>
|
|
#endif
|
|
|
|
#include "xf86.h"
|
|
#include "compiler.h"
|
|
#define _INT10_PRIVATE
|
|
#include "xf86int10.h"
|
|
#include "int10Defines.h"
|
|
#include "Pci.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 struct pci_device *findPci(xf86Int10InfoPtr pInt, unsigned short bx);
|
|
static CARD32 pciSlotBX( const struct pci_device * 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
|
|
|
|
#ifdef SHOW_ALL_DEVICES
|
|
/**
|
|
* These functions are meant to be used by the PCI BIOS emulation. Some
|
|
* BIOSes need to see if there are \b other chips of the same type around so
|
|
* by setting \c exclude one PCI device can be explicitely excluded, if
|
|
* required.
|
|
*/
|
|
static struct pci_device *
|
|
do_find(const struct pci_id_match *m, char n, const struct pci_device * exclude)
|
|
{
|
|
struct pci_device *dev;
|
|
struct pci_device_iterator *iter;
|
|
|
|
n++;
|
|
|
|
iter = pci_id_match_iterator_create(m);
|
|
while ((dev = pci_device_next(iter)) != NULL) {
|
|
if ((dev != exclude) && !(--n)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
pci_iterator_destroy(iter);
|
|
|
|
return dev;
|
|
}
|
|
|
|
|
|
static struct pci_device *
|
|
find_pci_device_vendor(CARD16 vendorID, CARD16 deviceID,
|
|
char n, const struct pci_device * exclude)
|
|
{
|
|
struct pci_id_match m;
|
|
|
|
m.vendor_id = vendorID;
|
|
m.device_id = deviceID;
|
|
m.subvendor_id = PCI_MATCH_ANY;
|
|
m.subdevice_id = PCI_MATCH_ANY;
|
|
m.device_class = 0;
|
|
m.device_class_mask = 0;
|
|
|
|
return do_find(& m, n, exclude);
|
|
}
|
|
|
|
static struct pci_device *
|
|
find_pci_class(CARD8 intf, CARD8 subClass, CARD16 _class,
|
|
char n, const struct pci_device * exclude)
|
|
{
|
|
struct pci_id_match m;
|
|
|
|
m.vendor_id = PCI_MATCH_ANY;
|
|
m.device_id = PCI_MATCH_ANY;
|
|
m.subvendor_id = PCI_MATCH_ANY;
|
|
m.subdevice_id = PCI_MATCH_ANY;
|
|
m.device_class = (((uint32_t)_class) << 16)
|
|
| (((uint32_t)subClass) << 8) | intf;
|
|
m.device_class_mask = 0x00ffffff;
|
|
|
|
return do_find(& m, n, exclude);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
int1A_handler(xf86Int10InfoPtr pInt)
|
|
{
|
|
struct pci_device * const pvp = xf86GetPciInfoForEntity(pInt->entityIndex);
|
|
struct pci_device * dev;
|
|
|
|
if (pvp == NULL)
|
|
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_id)
|
|
&& (X86_CX == pvp->device_id)
|
|
&& (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 ((dev = find_pci_device_vendor(X86_EDX, X86_ECX, X86_ESI, pvp))) {
|
|
X86_EAX = X86_AL | (SUCCESSFUL << 8);
|
|
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
|
|
X86_EBX = pciSlotBX(dev);
|
|
}
|
|
#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_ECX & 0x00FFFFFF) == pvp->device_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 ((dev = find_pci_class(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(dev);
|
|
}
|
|
#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 ((dev = findPci(pInt, X86_EBX)) != NULL) {
|
|
pci_device_cfg_read_u8(dev, & X86_CL, X86_DI);
|
|
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 ((dev = findPci(pInt, X86_EBX)) != NULL) {
|
|
pci_device_cfg_read_u16(dev, & X86_CX, X86_DI);
|
|
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 ((dev = findPci(pInt, X86_EBX)) != NULL) {
|
|
pci_device_cfg_read_u32(dev, & X86_ECX, X86_DI);
|
|
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 ((dev = findPci(pInt, X86_EBX)) != NULL) {
|
|
pci_device_cfg_write_u8(dev, X86_CL, X86_DI);
|
|
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 ((dev = findPci(pInt, X86_EBX)) != NULL) {
|
|
pci_device_cfg_write_u16(dev, X86_CX, X86_DI);
|
|
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 ((dev = findPci(pInt, X86_EBX)) != NULL) {
|
|
pci_device_cfg_write_u32(dev, X86_ECX, X86_DI);
|
|
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 struct pci_device *
|
|
findPci(xf86Int10InfoPtr pInt, unsigned short bx)
|
|
{
|
|
const unsigned bus = (bx >> 8) & 0x00FF;
|
|
const unsigned dev = (bx >> 3) & 0x001F;
|
|
const unsigned func = (bx ) & 0x0007;
|
|
|
|
return pci_device_find_by_slot(pInt->dev->domain, bus, dev, func);
|
|
}
|
|
|
|
static CARD32
|
|
pciSlotBX(const struct pci_device * pvp)
|
|
{
|
|
return ((pvp->bus << 8) & 0x00FF00) | (pvp->dev << 3) | (pvp->func);
|
|
}
|
|
|
|
/*
|
|
* handle initialization
|
|
*/
|
|
static int
|
|
intE6_handler(xf86Int10InfoPtr pInt)
|
|
{
|
|
struct pci_device * pvp;
|
|
|
|
if ((pvp = xf86GetPciInfoForEntity(pInt->entityIndex)))
|
|
X86_AX = (pvp->bus << 8) | (pvp->dev << 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;
|
|
}
|