885 lines
32 KiB
C
885 lines
32 KiB
C
/*
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* XFree86 int10 module
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* execute BIOS int 10h calls in x86 real mode environment
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* Copyright 1999 Egbert Eich
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "xf86.h"
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#include "compiler.h"
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#define _INT10_PRIVATE
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#include "xf86int10_priv.h"
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#include "int10Defines.h"
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#include "Pci.h"
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#define REG pInt
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xf86Int10InfoPtr Int10Current = NULL;
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static int int1A_handler(xf86Int10InfoPtr pInt);
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#ifndef _PC
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static int int42_handler(xf86Int10InfoPtr pInt);
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#endif
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static int intE6_handler(xf86Int10InfoPtr pInt);
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static struct pci_device *findPci(xf86Int10InfoPtr pInt, unsigned short bx);
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static CARD32 pciSlotBX(const struct pci_device *pvp);
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int
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int_handler(xf86Int10InfoPtr pInt)
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{
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int num = pInt->num;
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int ret = 0;
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switch (num) {
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#ifndef _PC
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case 0x10:
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case 0x42:
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case 0x6D:
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if (getIntVect(pInt, num) == I_S_DEFAULT_INT_VECT)
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ret = int42_handler(pInt);
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break;
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#endif
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case 0x1A:
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ret = int1A_handler(pInt);
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break;
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case 0xe6:
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ret = intE6_handler(pInt);
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break;
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default:
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break;
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}
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if (!ret)
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ret = run_bios_int(num, pInt);
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if (!ret) {
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xf86DrvMsg(pInt->pScrn->scrnIndex, X_ERROR, "Halting on int 0x%2.2x!\n", num);
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dump_registers(pInt);
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stack_trace(pInt);
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}
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return ret;
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}
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#ifndef _PC
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/*
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* This is derived from a number of PC system BIOS'es. The intent here is to
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* provide very primitive video support, before an EGA/VGA BIOS installs its
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* own interrupt vector. Here, "Ignored" calls should remain so. "Not
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* Implemented" denotes functionality that can be implemented should the need
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* arise. What are "Not Implemented" throughout are video memory accesses.
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* Also, very little input validity checking is done here.
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*/
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static int
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int42_handler(xf86Int10InfoPtr pInt)
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{
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switch (X86_AH) {
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case 0x00:
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/* Set Video Mode */
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/* Enter: AL = video mode number */
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/* Leave: Nothing */
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/* Implemented (except for clearing the screen) */
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{ /* Localise */
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unsigned int ioport;
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int i;
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CARD16 int1d, regvals, tmp;
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CARD8 mode, cgamode, cgacolour;
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/*
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* Ignore all mode numbers but 0x00-0x13. Some systems also ignore
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* 0x0B and 0x0C, but don't do that here.
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*/
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if (X86_AL > 0x13)
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break;
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/*
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* You didn't think that was really the mode set, did you? There
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* are only so many slots in the video parameter table...
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*/
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mode = X86_AL;
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ioport = 0x03D4;
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switch (MEM_RB(pInt, 0x0410) & 0x30) {
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case 0x30: /* MDA */
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mode = 0x07; /* Force mode to 0x07 */
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ioport = 0x03B4;
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break;
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case 0x10: /* CGA 40x25 */
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if (mode >= 0x07)
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mode = 0x01;
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break;
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case 0x20: /* CGA 80x25 (MCGA?) */
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if (mode >= 0x07)
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mode = 0x03;
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break;
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case 0x00: /* EGA/VGA */
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if (mode >= 0x07) /* Don't try MDA timings */
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mode = 0x01; /* !?!?! */
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break;
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}
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/* Locate data in video parameter table */
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int1d = MEM_RW(pInt, 0x1d << 2);
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regvals = ((mode >> 1) << 4) + int1d;
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cgacolour = 0x30;
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if (mode == 0x06) {
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regvals -= 0x10;
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cgacolour = 0x3F;
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}
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/** Update BIOS Data Area **/
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/* Video mode */
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MEM_WB(pInt, 0x0449, mode);
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/* Columns */
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tmp = MEM_RB(pInt, mode + int1d + 0x48);
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MEM_WW(pInt, 0x044A, tmp);
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/* Page length */
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tmp = MEM_RW(pInt, (mode & 0x06) + int1d + 0x40);
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MEM_WW(pInt, 0x044C, tmp);
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/* Start Address */
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MEM_WW(pInt, 0x044E, 0);
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/* Cursor positions, one for each display page */
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for (i = 0x0450; i < 0x0460; i += 2)
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MEM_WW(pInt, i, 0);
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/* Cursor start & end scanlines */
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tmp = MEM_RB(pInt, regvals + 0x0B);
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MEM_WB(pInt, 0x0460, tmp);
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tmp = MEM_RB(pInt, regvals + 0x0A);
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MEM_WB(pInt, 0x0461, tmp);
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/* Current display page number */
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MEM_WB(pInt, 0x0462, 0);
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/* CRTC I/O address */
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MEM_WW(pInt, 0x0463, ioport);
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/* CGA Mode register value */
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cgamode = MEM_RB(pInt, mode + int1d + 0x50);
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MEM_WB(pInt, 0x0465, cgamode);
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/* CGA Colour register value */
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MEM_WB(pInt, 0x0466, cgacolour);
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/* Rows */
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MEM_WB(pInt, 0x0484, (25 - 1));
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/* Program the mode */
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pci_io_write8(pInt->io, ioport + 4, cgamode & 0x37); /* Turn off screen */
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for (i = 0; i < 0x10; i++) {
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tmp = MEM_RB(pInt, regvals + i);
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pci_io_write8(pInt->io, ioport, i);
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pci_io_write8(pInt->io, ioport + 1, tmp);
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}
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pci_io_write8(pInt->io, ioport + 5, cgacolour); /* Select colour mode */
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pci_io_write8(pInt->io, ioport + 4, cgamode); /* Turn on screen */
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}
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break;
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case 0x01:
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/* Set Cursor Type */
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/* Enter: CH = starting line for cursor */
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/* CL = ending line for cursor */
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/* Leave: Nothing */
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/* Implemented */
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{ /* Localise */
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unsigned int ioport = MEM_RW(pInt, 0x0463);
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MEM_WB(pInt, 0x0460, X86_CL);
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MEM_WB(pInt, 0x0461, X86_CH);
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pci_io_write8(pInt->io, ioport, 0x0A);
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pci_io_write8(pInt->io, ioport + 1, X86_CH);
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pci_io_write8(pInt->io, ioport, 0x0B);
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pci_io_write8(pInt->io, ioport + 1, X86_CL);
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}
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break;
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case 0x02:
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/* Set Cursor Position */
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/* Enter: BH = display page number */
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/* DH = row */
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/* DL = column */
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/* Leave: Nothing */
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/* Implemented */
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{ /* Localise */
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unsigned int ioport;
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CARD16 offset;
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MEM_WB(pInt, (X86_BH << 1) + 0x0450, X86_DL);
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MEM_WB(pInt, (X86_BH << 1) + 0x0451, X86_DH);
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if (X86_BH != MEM_RB(pInt, 0x0462))
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break;
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offset = (X86_DH * MEM_RW(pInt, 0x044A)) + X86_DL;
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offset += MEM_RW(pInt, 0x044E) << 1;
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ioport = MEM_RW(pInt, 0x0463);
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pci_io_write8(pInt->io, ioport, 0x0E);
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pci_io_write8(pInt->io, ioport + 1, offset >> 8);
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pci_io_write8(pInt->io, ioport, 0x0F);
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pci_io_write8(pInt->io, ioport + 1, offset & 0xFF);
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}
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break;
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case 0x03:
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/* Get Cursor Position */
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/* Enter: BH = display page number */
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/* Leave: CH = starting line for cursor */
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/* CL = ending line for cursor */
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/* DH = row */
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/* DL = column */
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/* Implemented */
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{ /* Localise */
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X86_CL = MEM_RB(pInt, 0x0460);
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X86_CH = MEM_RB(pInt, 0x0461);
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X86_DL = MEM_RB(pInt, (X86_BH << 1) + 0x0450);
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X86_DH = MEM_RB(pInt, (X86_BH << 1) + 0x0451);
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}
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break;
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case 0x04:
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/* Get Light Pen Position */
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/* Enter: Nothing */
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/* Leave: AH = 0x01 (down/triggered) or 0x00 (not) */
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/* BX = pixel column */
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/* CX = pixel row */
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/* DH = character row */
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/* DL = character column */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
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"int 0x%2.2x(AH=0x04) -- Get Light Pen Position\n",
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pInt->num);
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if (xf86GetVerbosity() > 3) {
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dump_registers(pInt);
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stack_trace(pInt);
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}
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X86_AH = X86_BX = X86_CX = X86_DX = 0;
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}
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break;
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case 0x05:
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/* Set Display Page */
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/* Enter: AL = display page number */
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/* Leave: Nothing */
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/* Implemented */
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{ /* Localise */
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unsigned int ioport = MEM_RW(pInt, 0x0463);
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CARD16 start;
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CARD8 x, y;
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/* Calculate new start address */
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MEM_WB(pInt, 0x0462, X86_AL);
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start = X86_AL * MEM_RW(pInt, 0x044C);
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MEM_WW(pInt, 0x044E, start);
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start <<= 1;
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/* Update start address */
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pci_io_write8(pInt->io, ioport, 0x0C);
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pci_io_write8(pInt->io, ioport + 1, start >> 8);
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pci_io_write8(pInt->io, ioport, 0x0D);
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pci_io_write8(pInt->io, ioport + 1, start & 0xFF);
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/* Switch cursor position */
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y = MEM_RB(pInt, (X86_AL << 1) + 0x0450);
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x = MEM_RB(pInt, (X86_AL << 1) + 0x0451);
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start += (y * MEM_RW(pInt, 0x044A)) + x;
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/* Update cursor position */
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pci_io_write8(pInt->io, ioport, 0x0E);
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pci_io_write8(pInt->io, ioport + 1, start >> 8);
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pci_io_write8(pInt->io, ioport, 0x0F);
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pci_io_write8(pInt->io, ioport + 1, start & 0xFF);
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}
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break;
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case 0x06:
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/* Initialise or Scroll Window Up */
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/* Enter: AL = lines to scroll up */
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/* BH = attribute for blank */
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/* CH = upper y of window */
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/* CL = left x of window */
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/* DH = lower y of window */
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/* DL = right x of window */
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/* Leave: Nothing */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
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"int 0x%2.2x(AH=0x06) -- Initialise or Scroll Window Up\n",
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pInt->num);
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
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" AL=0x%2.2x, BH=0x%2.2x,"
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" CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
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X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
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if (xf86GetVerbosity() > 3) {
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dump_registers(pInt);
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stack_trace(pInt);
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}
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}
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break;
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case 0x07:
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/* Initialise or Scroll Window Down */
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/* Enter: AL = lines to scroll down */
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/* BH = attribute for blank */
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/* CH = upper y of window */
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/* CL = left x of window */
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/* DH = lower y of window */
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/* DL = right x of window */
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/* Leave: Nothing */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
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"int 0x%2.2x(AH=0x07) -- Initialise or Scroll Window Down\n",
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pInt->num);
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
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" AL=0x%2.2x, BH=0x%2.2x,"
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" CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
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X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
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if (xf86GetVerbosity() > 3) {
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dump_registers(pInt);
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stack_trace(pInt);
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}
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}
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break;
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case 0x08:
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/* Read Character and Attribute at Cursor */
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/* Enter: BH = display page number */
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/* Leave: AH = attribute */
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/* AL = character */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
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"int 0x%2.2x(AH=0x08) -- Read Character and Attribute at"
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" Cursor\n", pInt->num);
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
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"BH=0x%2.2x\n", X86_BH);
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if (xf86GetVerbosity() > 3) {
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dump_registers(pInt);
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stack_trace(pInt);
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}
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X86_AX = 0;
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}
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break;
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case 0x09:
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/* Write Character and Attribute at Cursor */
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/* Enter: AL = character */
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/* BH = display page number */
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/* BL = attribute (text) or colour (graphics) */
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/* CX = replication count */
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/* Leave: Nothing */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
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"int 0x%2.2x(AH=0x09) -- Write Character and Attribute at"
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" Cursor\n", pInt->num);
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
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"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
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X86_AL, X86_BH, X86_BL, X86_CX);
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if (xf86GetVerbosity() > 3) {
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dump_registers(pInt);
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stack_trace(pInt);
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}
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}
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break;
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case 0x0a:
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/* Write Character at Cursor */
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/* Enter: AL = character */
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/* BH = display page number */
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/* BL = colour */
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/* CX = replication count */
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/* Leave: Nothing */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
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"int 0x%2.2x(AH=0x0A) -- Write Character at Cursor\n",
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pInt->num);
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
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"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
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X86_AL, X86_BH, X86_BL, X86_CX);
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if (xf86GetVerbosity() > 3) {
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dump_registers(pInt);
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stack_trace(pInt);
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}
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}
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break;
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case 0x0b:
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/* Set Palette, Background or Border */
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/* Enter: BH = 0x00 or 0x01 */
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/* BL = colour or palette (respectively) */
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/* Leave: Nothing */
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/* Implemented */
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{ /* Localise */
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unsigned int ioport = MEM_RW(pInt, 0x0463) + 5;
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CARD8 cgacolour = MEM_RB(pInt, 0x0466);
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if (X86_BH) {
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cgacolour &= 0xDF;
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cgacolour |= (X86_BL & 0x01) << 5;
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}
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else {
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cgacolour &= 0xE0;
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cgacolour |= X86_BL & 0x1F;
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}
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MEM_WB(pInt, 0x0466, cgacolour);
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pci_io_write8(pInt->io, ioport, cgacolour);
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}
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break;
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case 0x0c:
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/* Write Graphics Pixel */
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/* Enter: AL = pixel value */
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/* BH = display page number */
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/* CX = column */
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/* DX = row */
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/* Leave: Nothing */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
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"int 0x%2.2x(AH=0x0C) -- Write Graphics Pixel\n",
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pInt->num);
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
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"AL=0x%2.2x, BH=0x%2.2x, CX=0x%4.4x, DX=0x%4.4x\n",
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X86_AL, X86_BH, X86_CX, X86_DX);
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if (xf86GetVerbosity() > 3) {
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dump_registers(pInt);
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stack_trace(pInt);
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}
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}
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break;
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case 0x0d:
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/* Read Graphics Pixel */
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/* Enter: BH = display page number */
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/* CX = column */
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/* DX = row */
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/* Leave: AL = pixel value */
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/* Not Implemented */
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{ /* Localise */
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xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
|
|
"int 0x%2.2x(AH=0x0D) -- Read Graphics Pixel\n",
|
|
pInt->num);
|
|
xf86DrvMsgVerb(pInt->pScrn->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->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
|
|
"int 0x%2.2x(AH=0x0E) -- Write Character in Teletype Mode\n",
|
|
pInt->num);
|
|
xf86DrvMsgVerb(pInt->pScrn->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->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
|
|
"int 0x%2.2x(AH=0x13) -- Write String in Teletype Mode\n",
|
|
pInt->num);
|
|
xf86DrvMsgVerb(pInt->pScrn->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 explicitly 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
|
|
|
|
/*
|
|
* Return the last bus number in the same domain as dev. Only look at the
|
|
* one domain since this is going into %cl, and VGA I/O is per-domain anyway.
|
|
*/
|
|
static int
|
|
int1A_last_bus_number(struct pci_device *dev)
|
|
{
|
|
struct pci_device *d;
|
|
|
|
struct pci_slot_match m = { dev->domain,
|
|
PCI_MATCH_ANY,
|
|
PCI_MATCH_ANY,
|
|
PCI_MATCH_ANY
|
|
};
|
|
struct pci_device_iterator *iter;
|
|
int i = 0;
|
|
|
|
iter = pci_slot_match_iterator_create(&m);
|
|
|
|
while ((d = pci_device_next(iter)))
|
|
if (d->bus > i)
|
|
i = d->bus;
|
|
|
|
pci_iterator_destroy(iter);
|
|
|
|
return i;
|
|
}
|
|
|
|
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 |= int1A_last_bus_number(pvp);
|
|
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->pScrn->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;
|
|
}
|