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#include "misc.h"
#include "xf86.h"
#include "xf86_OSproc.h"
#include "vgaHW.h"
#include "compiler.h"
#include "xf86cmap.h"
#define TEXT_AMOUNT 16384
#define FONT_AMOUNT (8*8192)
void
MGAG200SERestoreFonts(ScrnInfoPtr scrninfp, vgaRegPtr restore)
{
vgaHWPtr hwp = VGAHWPTR(scrninfp);
int savedIOBase;
unsigned char miscOut, attr10, gr1, gr3, gr4, gr5, gr6, gr8, seq2, seq4;
Bool doMap = FALSE;
/* If nothing to do, return now */
if (!hwp->FontInfo1 && !hwp->FontInfo2 && !hwp->TextInfo)
return;
if (hwp->Base == NULL) {
doMap = TRUE;
if (!vgaHWMapMem(scrninfp)) {
xf86DrvMsg(scrninfp->scrnIndex, X_ERROR,
"vgaHWRestoreFonts: vgaHWMapMem() failed\n");
return;
}
}
/* save the registers that are needed here */
miscOut = hwp->readMiscOut(hwp);
attr10 = hwp->readAttr(hwp, 0x10);
gr1 = hwp->readGr(hwp, 0x01);
gr3 = hwp->readGr(hwp, 0x03);
gr4 = hwp->readGr(hwp, 0x04);
gr5 = hwp->readGr(hwp, 0x05);
gr6 = hwp->readGr(hwp, 0x06);
gr8 = hwp->readGr(hwp, 0x08);
seq2 = hwp->readSeq(hwp, 0x02);
seq4 = hwp->readSeq(hwp, 0x04);
/* save hwp->IOBase and temporarily set it for colour mode */
savedIOBase = hwp->IOBase;
hwp->IOBase = VGA_IOBASE_COLOR;
/* Force into colour mode */
hwp->writeMiscOut(hwp, miscOut | 0x01);
vgaHWBlankScreen(scrninfp, FALSE);
/*
* here we temporarily switch to 16 colour planar mode, to simply
* copy the font-info and saved text.
*
* BUG ALERT: The (S)VGA's segment-select register MUST be set correctly!
*/
#if 0
hwp->writeAttr(hwp, 0x10, 0x01); /* graphics mode */
#endif
if (scrninfp->depth == 4) {
/* GJA */
hwp->writeGr(hwp, 0x03, 0x00); /* don't rotate, write unmodified */
hwp->writeGr(hwp, 0x08, 0xFF); /* write all bits in a byte */
hwp->writeGr(hwp, 0x01, 0x00); /* all planes come from CPU */
}
if (hwp->FontInfo1) {
hwp->writeSeq(hwp, 0x02, 0x04); /* write to plane 2 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x02); /* read plane 2 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_tobus(hwp->FontInfo1, hwp->Base, FONT_AMOUNT);
}
if (hwp->FontInfo2) {
hwp->writeSeq(hwp, 0x02, 0x08); /* write to plane 3 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x03); /* read plane 3 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_tobus(hwp->FontInfo2, hwp->Base, FONT_AMOUNT);
}
if (hwp->TextInfo) {
hwp->writeSeq(hwp, 0x02, 0x01); /* write to plane 0 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x00); /* read plane 0 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_tobus(hwp->TextInfo, hwp->Base, TEXT_AMOUNT);
hwp->writeSeq(hwp, 0x02, 0x02); /* write to plane 1 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x01); /* read plane 1 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_tobus((unsigned char *)hwp->TextInfo + TEXT_AMOUNT,
hwp->Base, TEXT_AMOUNT);
}
/* restore the registers that were changed */
hwp->writeMiscOut(hwp, miscOut);
hwp->writeAttr(hwp, 0x10, attr10);
hwp->writeGr(hwp, 0x01, gr1);
hwp->writeGr(hwp, 0x03, gr3);
hwp->writeGr(hwp, 0x04, gr4);
hwp->writeGr(hwp, 0x05, gr5);
hwp->writeGr(hwp, 0x06, gr6);
hwp->writeGr(hwp, 0x08, gr8);
hwp->writeSeq(hwp, 0x02, seq2);
hwp->writeSeq(hwp, 0x04, seq4);
hwp->IOBase = savedIOBase;
vgaHWBlankScreen(scrninfp, TRUE);
if (doMap)
vgaHWUnmapMem(scrninfp);
}
void
MGAG200SESaveFonts(ScrnInfoPtr scrninfp, vgaRegPtr save)
{
vgaHWPtr hwp = VGAHWPTR(scrninfp);
int savedIOBase;
unsigned char miscOut, attr10, gr4, gr5, gr6, seq2, seq4;
Bool doMap = FALSE;
if (hwp->Base == NULL) {
doMap = TRUE;
if (!vgaHWMapMem(scrninfp)) {
xf86DrvMsg(scrninfp->scrnIndex, X_ERROR,
"vgaHWSaveFonts: vgaHWMapMem() failed\n");
return;
}
}
/* If in graphics mode, don't save anything */
attr10 = hwp->readAttr(hwp, 0x10);
if (attr10 & 0x01)
return;
/* save the registers that are needed here */
miscOut = hwp->readMiscOut(hwp);
gr4 = hwp->readGr(hwp, 0x04);
gr5 = hwp->readGr(hwp, 0x05);
gr6 = hwp->readGr(hwp, 0x06);
seq2 = hwp->readSeq(hwp, 0x02);
seq4 = hwp->readSeq(hwp, 0x04);
/* save hwp->IOBase and temporarily set it for colour mode */
savedIOBase = hwp->IOBase;
hwp->IOBase = VGA_IOBASE_COLOR;
/* Force into colour mode */
hwp->writeMiscOut(hwp, miscOut | 0x01);
vgaHWBlankScreen(scrninfp, FALSE);
/*
* get the character sets, and text screen if required
*/
/*
* Here we temporarily switch to 16 colour planar mode, to simply
* copy the font-info
*
* BUG ALERT: The (S)VGA's segment-select register MUST be set correctly!
*/
#if 0
hwp->writeAttr(hwp, 0x10, 0x01); /* graphics mode */
#endif
if (hwp->FontInfo1 || (hwp->FontInfo1 = xalloc(FONT_AMOUNT))) {
hwp->writeSeq(hwp, 0x02, 0x04); /* write to plane 2 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x02); /* read plane 2 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_frombus(hwp->Base, hwp->FontInfo1, FONT_AMOUNT);
}
if (hwp->FontInfo2 || (hwp->FontInfo2 = xalloc(FONT_AMOUNT))) {
hwp->writeSeq(hwp, 0x02, 0x08); /* write to plane 3 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x03); /* read plane 3 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_frombus(hwp->Base, hwp->FontInfo2, FONT_AMOUNT);
}
if (hwp->TextInfo || (hwp->TextInfo = xalloc(2 * TEXT_AMOUNT))) {
hwp->writeSeq(hwp, 0x02, 0x01); /* write to plane 0 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x00); /* read plane 0 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_frombus(hwp->Base, hwp->TextInfo, TEXT_AMOUNT);
hwp->writeSeq(hwp, 0x02, 0x02); /* write to plane 1 */
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x04, 0x01); /* read plane 1 */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
slowbcopy_frombus(hwp->Base,
(unsigned char *)hwp->TextInfo + TEXT_AMOUNT, TEXT_AMOUNT);
}
/* Restore clobbered registers */
hwp->writeAttr(hwp, 0x10, attr10);
hwp->writeGr(hwp, 0x04, gr4);
hwp->writeGr(hwp, 0x05, gr5);
hwp->writeGr(hwp, 0x06, gr6);
hwp->writeSeq(hwp, 0x02, seq2);
hwp->writeSeq(hwp, 0x04, seq4);
hwp->writeMiscOut(hwp, miscOut);
hwp->IOBase = savedIOBase;
vgaHWBlankScreen(scrninfp, TRUE);
if (doMap)
vgaHWUnmapMem(scrninfp);
}
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