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#include "misc.h"
#include "xf86.h"
#include "xf86_OSproc.h"
#include "vgaHW.h"
#include "compiler.h"
#include "xf86cmap.h"
#include "mga.h"
#include "mga_reg.h"
#define TEXT_AMOUNT 16384
#define FONT_AMOUNT (8*8192)
void
MGAG200SERestoreFonts(ScrnInfoPtr scrninfp, vgaRegPtr restore)
{
vgaHWPtr hwp = VGAHWPTR(scrninfp);
MGAPtr pMga = MGAPTR(scrninfp);
int savedIOBase;
unsigned char miscOut, attr10, gr1, gr3, gr4, gr5, gr6, gr8, seq2, seq4;
Bool doMap = FALSE;
unsigned char scrn;
/* 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);
scrn = hwp->readSeq(hwp, 0x01);
scrn |= 0x20;/* blank screen */
vgaHWSeqReset(hwp, TRUE);
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 0x01, scrn);/* change mode */
usleep(20000);
vgaHWSeqReset(hwp, 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 */
}
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
if (hwp->FontInfo1) {
hwp->writeSeq(hwp, 0x02, 0x04); /* write to plane 2 */
hwp->writeGr(hwp, 0x04, 0x02); /* read plane 2 */
slowbcopy_tobus(hwp->FontInfo1, hwp->Base, FONT_AMOUNT);
}
if (hwp->FontInfo2) {
hwp->writeSeq(hwp, 0x02, 0x08); /* write to plane 3 */
hwp->writeGr(hwp, 0x04, 0x03); /* read plane 3 */
slowbcopy_tobus(hwp->FontInfo2, hwp->Base, FONT_AMOUNT);
}
if (hwp->TextInfo) {
hwp->writeSeq(hwp, 0x02, 0x01); /* write to plane 0 */
hwp->writeGr(hwp, 0x04, 0x00); /* read plane 0 */
slowbcopy_tobus(hwp->TextInfo, hwp->Base, TEXT_AMOUNT);
hwp->writeSeq(hwp, 0x02, 0x02); /* write to plane 1 */
hwp->writeGr(hwp, 0x04, 0x01); /* read plane 1 */
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;
scrn = hwp->readSeq(hwp, 0x01);
scrn &= ~0x20;/* enable screen */
vgaHWSeqReset(hwp, TRUE);
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 0x01, scrn);/* change mode */
usleep(20000);
vgaHWSeqReset(hwp, FALSE);
if (doMap)
vgaHWUnmapMem(scrninfp);
}
void
MGAG200SESaveFonts(ScrnInfoPtr scrninfp, vgaRegPtr save)
{
vgaHWPtr hwp = VGAHWPTR(scrninfp);
MGAPtr pMga = MGAPTR(scrninfp);
int savedIOBase;
unsigned char miscOut, attr10, gr4, gr5, gr6, seq2, seq4;
Bool doMap = FALSE;
unsigned char scrn;
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);
scrn = hwp->readSeq(hwp, 0x01);
scrn |= 0x20;/* blank screen */
vgaHWSeqReset(hwp, TRUE);
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 0x01, scrn);/* change mode */
usleep(20000);
vgaHWSeqReset(hwp, 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
hwp->writeSeq(hwp, 0x04, 0x06); /* enable plane graphics */
hwp->writeGr(hwp, 0x05, 0x00); /* write mode 0, read mode 0 */
hwp->writeGr(hwp, 0x06, 0x05); /* set graphics */
if (hwp->FontInfo1 || (hwp->FontInfo1 = xalloc(FONT_AMOUNT))) {
hwp->writeSeq(hwp, 0x02, 0x04); /* write to plane 2 */
hwp->writeGr(hwp, 0x04, 0x02); /* read plane 2 */
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->writeGr(hwp, 0x04, 0x03); /* read plane 3 */
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->writeGr(hwp, 0x04, 0x00); /* read plane 0 */
slowbcopy_frombus(hwp->Base, hwp->TextInfo, TEXT_AMOUNT);
hwp->writeSeq(hwp, 0x02, 0x02); /* write to plane 1 */
hwp->writeGr(hwp, 0x04, 0x01); /* read plane 1 */
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;
scrn = hwp->readSeq(hwp, 0x01);
scrn &= ~0x20;/* enable screen */
vgaHWSeqReset(hwp, TRUE);
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 0x01, scrn);/* change mode */
usleep(20000);
vgaHWSeqReset(hwp, FALSE);
if (doMap)
vgaHWUnmapMem(scrninfp);
}
void
MGAG200SERestoreMode(ScrnInfoPtr scrninfp, vgaRegPtr restore)
{
vgaHWPtr hwp = VGAHWPTR(scrninfp);
MGAPtr pMga = MGAPTR(scrninfp);
int i;
unsigned char scrn;
if (restore->MiscOutReg & 0x01)
hwp->IOBase = VGA_IOBASE_COLOR;
else
hwp->IOBase = VGA_IOBASE_MONO;
hwp->writeMiscOut(hwp, restore->MiscOutReg);
for (i = 1; i < restore->numSequencer; i++)
{
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, i, restore->Sequencer[i]);
usleep(20000);
}
scrn = hwp->readSeq(hwp, 0x01);
scrn |= 0x20;/* blank screen */
vgaHWSeqReset(hwp, TRUE);
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 0x01, scrn);/* change mode */
usleep(20000);
/* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 of CRTC[17] */
hwp->writeCrtc(hwp, 17, restore->CRTC[17] & ~0x80);
for (i = 0; i < restore->numCRTC; i++)
hwp->writeCrtc(hwp, i, restore->CRTC[i]);
for (i = 0; i < restore->numGraphics; i++)
hwp->writeGr(hwp, i, restore->Graphics[i]);
hwp->enablePalette(hwp);
for (i = 0; i < restore->numAttribute; i++)
hwp->writeAttr(hwp, i, restore->Attribute[i]);
hwp->disablePalette(hwp);
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 1, restore->Sequencer[1]);
usleep(20000);
}
void
MGAG200SESaveMode(ScrnInfoPtr scrninfp, vgaRegPtr save)
{
vgaHWPtr hwp = VGAHWPTR(scrninfp);
int i;
save->MiscOutReg = hwp->readMiscOut(hwp);
if (save->MiscOutReg & 0x01)
hwp->IOBase = VGA_IOBASE_COLOR;
else
hwp->IOBase = VGA_IOBASE_MONO;
for (i = 0; i < save->numCRTC; i++) {
save->CRTC[i] = hwp->readCrtc(hwp, i);
#ifdef DEBUG
ErrorF("CRTC[0x%02x] = 0x%02x\n", i, save->CRTC[i]);
#endif
}
hwp->enablePalette(hwp);
for (i = 0; i < save->numAttribute; i++) {
save->Attribute[i] = hwp->readAttr(hwp, i);
#ifdef DEBUG
ErrorF("Attribute[0x%02x] = 0x%02x\n", i, save->Attribute[i]);
#endif
}
hwp->disablePalette(hwp);
for (i = 0; i < save->numGraphics; i++) {
save->Graphics[i] = hwp->readGr(hwp, i);
#ifdef DEBUG
ErrorF("Graphics[0x%02x] = 0x%02x\n", i, save->Graphics[i]);
#endif
}
for (i = 1; i < save->numSequencer; i++) {
save->Sequencer[i] = hwp->readSeq(hwp, i);
#ifdef DEBUG
ErrorF("Sequencer[0x%02x] = 0x%02x\n", i, save->Sequencer[i]);
#endif
}
}
void
MGAG200SEHWProtect(ScrnInfoPtr pScrn, Bool on)
{
vgaHWPtr hwp = VGAHWPTR(pScrn);
MGAPtr pMga = MGAPTR(pScrn);
unsigned char tmp;
if (pScrn->vtSema) {
if (on) {
/*
* Turn off screen and disable sequencer.
*/
tmp = hwp->readSeq(hwp, 0x01);
vgaHWSeqReset(hwp, TRUE); /* start synchronous reset */
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 0x01, tmp | 0x20); /* disable the display */
usleep(20000);
hwp->enablePalette(hwp);
} else {
/*
* Reenable sequencer, then turn on screen.
*/
tmp = hwp->readSeq(hwp, 0x01);
MGAWAITVSYNC();
MGAWAITBUSY();
hwp->writeSeq(hwp, 0x01, tmp & ~0x20); /* reenable display */
usleep(20000);
vgaHWSeqReset(hwp, FALSE); /* clear synchronousreset */
hwp->disablePalette(hwp);
}
}
}
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