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-rw-r--r--src/ativga.c259
1 files changed, 0 insertions, 259 deletions
diff --git a/src/ativga.c b/src/ativga.c
index 5678c6e..7332431 100644
--- a/src/ativga.c
+++ b/src/ativga.c
@@ -164,265 +164,6 @@ ATIVGASave
}
/*
- * ATIVGACalculate --
- *
- * This function fills in the VGA portion of an ATIHWRec.
- */
-void
-ATIVGACalculate
-(
- ATIPtr pATI,
- ATIHWPtr pATIHW,
- DisplayModePtr pMode
-)
-{
- int Index, VDisplay;
-
- /* If not already done, adjust horizontal timings */
- if (!pMode->CrtcHAdjusted)
- {
- pMode->CrtcHAdjusted = TRUE;
- pMode->CrtcHDisplay = (pMode->HDisplay >> 3) - 1;
- pMode->CrtcHBlankStart = (pMode->HDisplay >> 3);
- if ((pATI->Chip == ATI_CHIP_18800_1) ||
- (pATI->Chip >= ATI_CHIP_264CT))
- pMode->CrtcHBlankStart--;
- pMode->CrtcHSyncStart = pMode->HSyncStart >> 3;
- if (pATI->LCDPanelID >= 0)
- pMode->CrtcHSyncStart--;
- pMode->CrtcHSyncEnd = pMode->HSyncEnd >> 3;
- if (pATI->LCDPanelID >= 0)
- pMode->CrtcHSyncEnd--;
- pMode->CrtcHBlankEnd = (pMode->HTotal >> 3) - 1;
- pMode->CrtcHTotal = (pMode->HTotal >> 3) - 5;
- pMode->CrtcHSkew = pMode->HSkew;
-
- /* Check sync pulse width */
- Index = pMode->CrtcHSyncEnd - pMode->CrtcHSyncStart - 0x1F;
- if (Index > 0)
- {
- pMode->CrtcHSyncStart += Index / 2;
- pMode->CrtcHSyncEnd = pMode->CrtcHSyncStart + 0x1F;
- }
-
- /* Check blank pulse width */
- Index = pMode->CrtcHBlankEnd - pMode->CrtcHBlankStart - 0x3F;
- if (Index > 0)
- {
- if ((pMode->CrtcHBlankEnd - Index) > pMode->CrtcHSyncEnd)
- {
- pMode->CrtcHBlankStart += Index / 2;
- if (pMode->CrtcHBlankStart >= pMode->CrtcHSyncStart)
- pMode->CrtcHBlankStart = pMode->CrtcHSyncStart - 1;
- pMode->CrtcHBlankEnd = pMode->CrtcHBlankStart + 0x3F;
- }
- else
- {
- Index -= 0x40;
- if (Index > 0)
- {
- pMode->CrtcHBlankStart += Index / 2;
- if (pMode->CrtcHBlankStart >= pMode->CrtcHSyncStart)
- pMode->CrtcHBlankStart = pMode->CrtcHSyncStart - 1;
- pMode->CrtcHBlankEnd = pMode->CrtcHBlankStart + 0x7F;
- }
- }
- }
- }
-
- /*
- * Because of the use of CRTC[23] bit 0x04's for vertical doubling, it is
- * necessary to always re-adjust vertical timings here.
- */
- pMode->CrtcVDisplay = pMode->VDisplay;
- pMode->CrtcVBlankStart = pMode->VDisplay;
- pMode->CrtcVSyncStart = pMode->VSyncStart;
- pMode->CrtcVSyncEnd = pMode->VSyncEnd;
- pMode->CrtcVBlankEnd = pMode->VTotal;
- pMode->CrtcVTotal = pMode->VTotal;
-
- /* Adjust for doublescanned modes */
- if (pMode->Flags & V_DBLSCAN)
- {
- pMode->CrtcVDisplay <<= 1;
- pMode->CrtcVBlankStart <<= 1;
- pMode->CrtcVSyncStart <<= 1;
- pMode->CrtcVSyncEnd <<= 1;
- pMode->CrtcVBlankEnd <<= 1;
- pMode->CrtcVTotal <<= 1;
- }
-
- /* Adjust for multiscanned modes */
- if (pMode->VScan > 1)
- {
- pMode->CrtcVDisplay *= pMode->VScan;
- pMode->CrtcVBlankStart *= pMode->VScan;
- pMode->CrtcVSyncStart *= pMode->VScan;
- pMode->CrtcVSyncEnd *= pMode->VScan;
- pMode->CrtcVBlankEnd *= pMode->VScan;
- pMode->CrtcVTotal *= pMode->VScan;
- }
-
- /* Set up miscellaneous output register value */
- pATIHW->genmo = 0x23U;
- if ((pMode->Flags & (V_PHSYNC | V_NHSYNC)) &&
- (pMode->Flags & (V_PVSYNC | V_NVSYNC)))
- {
- if (pMode->Flags & V_NHSYNC)
- pATIHW->genmo |= 0x40U;
- if (pMode->Flags & V_NVSYNC)
- pATIHW->genmo |= 0x80U;
- }
- else
- {
- pMode->Flags &= ~(V_PHSYNC | V_NHSYNC | V_PVSYNC | V_NVSYNC);
-
- if (pATI->OptionPanelDisplay && (pATI->LCDPanelID >= 0))
- VDisplay = pATI->LCDVertical;
- else
- VDisplay = pMode->CrtcVDisplay;
-
- if (VDisplay < 400)
- {
- pMode->Flags |= V_PHSYNC | V_NVSYNC;
- pATIHW->genmo |= 0x80U;
- }
- else if (VDisplay < 480)
- {
- pMode->Flags |= V_NHSYNC | V_PVSYNC;
- pATIHW->genmo |= 0x40U;
- }
- else if (VDisplay < 768)
- {
- pMode->Flags |= V_NHSYNC | V_NVSYNC;
- pATIHW->genmo |= 0xC0U;
- }
- else
- {
- pMode->Flags |= V_PHSYNC | V_PVSYNC;
- }
- }
-
- /* Adjust for interlaced modes */
- if ((pMode->Flags & V_INTERLACE) && (pATI->Chip < ATI_CHIP_264CT))
- {
- pMode->CrtcVDisplay >>= 1;
- pMode->CrtcVBlankStart >>= 1;
- pMode->CrtcVSyncStart >>= 1;
- pMode->CrtcVSyncEnd >>= 1;
- pMode->CrtcVBlankEnd >>= 1;
- pMode->CrtcVTotal >>= 1;
- }
-
- if (pMode->CrtcVTotal > 1024)
- {
- pATIHW->crt[23] |= 0x04U;
- pMode->CrtcVDisplay >>= 1;
- pMode->CrtcVBlankStart >>= 1;
- pMode->CrtcVSyncStart >>= 1;
- pMode->CrtcVSyncEnd >>= 1;
- pMode->CrtcVBlankEnd >>= 1;
- pMode->CrtcVTotal >>= 1;
- }
- else
- {
- pATIHW->crt[23] &= ~0x04U;
- }
-
- pMode->CrtcVDisplay--;
- if (pATI->Chip == ATI_CHIP_18800)
- pMode->CrtcVBlankStart++;
- else
- pMode->CrtcVBlankStart--;
- if (pATI->LCDPanelID >= 0)
- {
- pMode->CrtcVSyncStart--;
- pMode->CrtcVSyncEnd--;
- }
- pMode->CrtcVBlankEnd--;
- if (pATI->Chip < ATI_CHIP_264CT)
- pMode->CrtcVBlankEnd--;
- pMode->CrtcVTotal -= 2;
- pMode->CrtcVAdjusted = TRUE; /* Redundant */
-
- /* Check sync pulse width */
- Index = pMode->CrtcVSyncEnd - pMode->CrtcVSyncStart - 0x0F;
- if (Index > 0)
- {
- pMode->CrtcVSyncStart += Index / 2;
- pMode->CrtcVSyncEnd = pMode->CrtcVSyncStart + 0x0F;
- }
-
- /* Check blank pulse width */
- Index = pMode->CrtcVBlankEnd - pMode->CrtcVBlankStart - 0x00FF;
- if (Index > 0)
- {
- if ((pMode->CrtcVBlankEnd - Index) > pMode->CrtcVSyncEnd)
- {
- pMode->CrtcVBlankStart += Index / 2;
- if (pMode->CrtcVBlankStart >= pMode->CrtcVSyncStart)
- pMode->CrtcVBlankStart = pMode->CrtcVSyncStart - 1;
- pMode->CrtcVBlankEnd = pMode->CrtcVBlankStart + 0x00FF;
- }
- else
- {
- Index -= 0x0100;
- if (Index > 0)
- {
- pMode->CrtcVBlankStart += Index / 2;
- if (pMode->CrtcVBlankStart >= pMode->CrtcVSyncStart)
- pMode->CrtcVBlankStart = pMode->CrtcVSyncStart - 1;
- pMode->CrtcVBlankEnd = pMode->CrtcVBlankStart + 0x01FF;
- }
- }
- }
-
- /* Set up sequencer register values */
- if (pMode->Flags & V_CLKDIV2)
- pATIHW->seq[1] = 0x09U;
- else
- pATIHW->seq[1] = 0x01U;
-
- /* Set up CRTC register values */
- pATIHW->crt[0] = pMode->CrtcHTotal;
- pATIHW->crt[1] = pMode->CrtcHDisplay;
- pATIHW->crt[2] = pMode->CrtcHBlankStart;
- pATIHW->crt[3] = (pMode->CrtcHBlankEnd & 0x1FU) | 0x80U;
- Index = ((pMode->CrtcHSkew << 2) + 0x10U) & ~0x1FU;
- if (Index < 0x0080)
- pATIHW->crt[3] |= Index;
- pATIHW->crt[4] = pMode->CrtcHSyncStart;
- pATIHW->crt[5] = ((pMode->CrtcHBlankEnd & 0x20U) << 2) |
- ((pMode->CrtcHSyncEnd & 0x1FU) );
- pATIHW->crt[6] = pMode->CrtcVTotal & 0xFFU;
- pATIHW->crt[7] = ((pMode->CrtcVTotal & 0x0100U) >> 8) |
- ((pMode->CrtcVDisplay & 0x0100U) >> 7) |
- ((pMode->CrtcVSyncStart & 0x0100U) >> 6) |
- ((pMode->CrtcVBlankStart & 0x0100U) >> 5) |
- 0x10U |
- ((pMode->CrtcVTotal & 0x0200U) >> 4) |
- ((pMode->CrtcVDisplay & 0x0200U) >> 3) |
- ((pMode->CrtcVSyncStart & 0x0200U) >> 2);
- pATIHW->crt[9] = ((pMode->CrtcVBlankStart & 0x0200U) >> 4) | 0x40U;
- /*
- * Doublescanned modes are missing the top scanline. Convert
- * doublescanning to multiscanning, using the doublescan bit only as a last
- * resort.
- */
- if ((Index = pMode->VScan) <= 0)
- Index = 1;
- if (pMode->Flags & V_DBLSCAN)
- Index <<= 1;
- Index--;
- pATIHW->crt[9] |= (Index & 0x1FU) | ((Index & 0x20U) << 2);
- pATIHW->crt[16] = pMode->CrtcVSyncStart & 0xFFU;
- pATIHW->crt[17] = (pMode->CrtcVSyncEnd & 0x0FU) | 0x20U;
- pATIHW->crt[18] = pMode->CrtcVDisplay & 0xFFU;
- pATIHW->crt[21] = pMode->CrtcVBlankStart & 0xFFU;
- pATIHW->crt[22] = pMode->CrtcVBlankEnd & 0xFFU;
-}
-
-/*
* ATIVGASet --
*
* This function is called to load the VGA portion of a video state.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 00:58:31 +0000