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-/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atidac.c,v 1.18 2003/02/25 17:58:13 tsi Exp $ */
-/*
- * Copyright 1997 through 2003 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting documentation, and
- * that the name of Marc Aurele La France not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. Marc Aurele La France makes no representations
- * about the suitability of this software for any purpose. It is provided
- * "as-is" without express or implied warranty.
- *
- * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
- * EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "ati.h"
-#include "atidac.h"
-#include "atimach64io.h"
-#include "atimono.h"
-
-/*
- * RAMDAC-related definitions.
- */
-const SymTabRec ATIDACDescriptors[] =
-{ /* Keep this table in ascending DACType order */
- {ATI_DAC_ATI68830, "ATI 68830 or similar"},
- {ATI_DAC_SC11483, "Sierra 11483 or similar"},
- {ATI_DAC_ATI68875, "ATI 68875 or similar"},
- {ATI_DAC_TVP3026_A, "TI ViewPoint3026 or similar"},
- {ATI_DAC_GENERIC, "Brooktree 476 or similar"},
- {ATI_DAC_BT481, "Brooktree 481 or similar"},
- {ATI_DAC_ATT20C491, "AT&T 20C491 or similar"},
- {ATI_DAC_SC15026, "Sierra 15026 or similar"},
- {ATI_DAC_MU9C1880, "Music 9C1880 or similar"},
- {ATI_DAC_IMSG174, "Inmos G174 or similar"},
- {ATI_DAC_ATI68860_B, "ATI 68860 (Revision B) or similar"},
- {ATI_DAC_ATI68860_C, "ATI 68860 (Revision C) or similar"},
- {ATI_DAC_TVP3026_B, "TI ViewPoint3026 or similar"},
- {ATI_DAC_STG1700, "SGS-Thompson 1700 or similar"},
- {ATI_DAC_ATT20C498, "AT&T 20C498 or similar"},
- {ATI_DAC_STG1702, "SGS-Thompson 1702 or similar"},
- {ATI_DAC_SC15021, "Sierra 15021 or similar"},
- {ATI_DAC_ATT21C498, "AT&T 21C498 or similar"},
- {ATI_DAC_STG1703, "SGS-Thompson 1703 or similar"},
- {ATI_DAC_CH8398, "Chrontel 8398 or similar"},
- {ATI_DAC_ATT20C408, "AT&T 20C408 or similar"},
- {ATI_DAC_INTERNAL, "Internal"},
- {ATI_DAC_IBMRGB514, "IBM RGB 514 or similar"},
- {ATI_DAC_UNKNOWN, "Unknown"} /* Must be last */
-};
-
-#ifndef AVOID_CPIO
-
-/*
- * ATISetDACIOPorts --
- *
- * This function sets up DAC access I/O port numbers.
- */
-void
-ATISetDACIOPorts
-(
- ATIPtr pATI,
- ATICRTCType crtc
-)
-{
- switch (crtc)
- {
- case ATI_CRTC_VGA:
- pATI->CPIO_DAC_DATA = VGA_DAC_DATA;
- pATI->CPIO_DAC_MASK = VGA_DAC_MASK;
- pATI->CPIO_DAC_READ = VGA_DAC_READ;
- pATI->CPIO_DAC_WRITE = VGA_DAC_WRITE;
- pATI->CPIO_DAC_WAIT = GENS1(pATI->CPIO_VGABase);
- break;
-
- case ATI_CRTC_8514:
- pATI->CPIO_DAC_DATA = IBM_DAC_DATA;
- pATI->CPIO_DAC_MASK = IBM_DAC_MASK;
- pATI->CPIO_DAC_READ = IBM_DAC_READ;
- pATI->CPIO_DAC_WRITE = IBM_DAC_WRITE;
- pATI->CPIO_DAC_WAIT = pATI->CPIO_DAC_MASK;
- break;
-
- case ATI_CRTC_MACH64:
- pATI->CPIO_DAC_DATA = ATIIOPort(DAC_REGS) + 1;
- pATI->CPIO_DAC_MASK = ATIIOPort(DAC_REGS) + 2;
- pATI->CPIO_DAC_READ = ATIIOPort(DAC_REGS) + 3;
- pATI->CPIO_DAC_WRITE = ATIIOPort(DAC_REGS) + 0;
- pATI->CPIO_DAC_WAIT = pATI->CPIOBase;
- break;
-
- default:
- break;
- }
-}
-
-#endif /* AVOID_CPIO */
-
-/*
- * ATIGetDACCmdReg --
- *
- * Setup to access a RAMDAC's command register.
- */
-CARD8
-ATIGetDACCmdReg
-(
- ATIPtr pATI
-)
-{
-
-#ifdef AVOID_CPIO
-
- (void)in8(M64_DAC_WRITE); /* Reset to PEL mode */
- (void)in8(M64_DAC_MASK);
- (void)in8(M64_DAC_MASK);
- (void)in8(M64_DAC_MASK);
- return in8(M64_DAC_MASK);
-
-#else /* AVOID_CPIO */
-
- (void)inb(pATI->CPIO_DAC_WRITE); /* Reset to PEL mode */
- (void)inb(pATI->CPIO_DAC_MASK);
- (void)inb(pATI->CPIO_DAC_MASK);
- (void)inb(pATI->CPIO_DAC_MASK);
- return inb(pATI->CPIO_DAC_MASK);
-
-#endif /* AVOID_CPIO */
-
-}
-
-/*
- * ATIDACPreInit --
- *
- * This function initialises the fields in an ATIHWRec that relate to DACs.
- */
-void
-ATIDACPreInit
-(
- ScrnInfoPtr pScreenInfo,
- ATIPtr pATI,
- ATIHWPtr pATIHW
-)
-{
- int Index, Index2;
- CARD8 maxColour = (1 << pATI->rgbBits) - 1;
-
- pATIHW->dac_read = pATIHW->dac_write = 0x00U;
- pATIHW->dac_mask = 0xFFU;
-
- /*
- * Set colour lookup table. The first entry has already been zeroed out.
- */
- if (pATI->depth > 8)
- for (Index = 1; Index < (NumberOf(pATIHW->lut) / 3); Index++)
- {
- Index2 = Index * 3;
- pATIHW->lut[Index2 + 0] =
- pATIHW->lut[Index2 + 1] =
- pATIHW->lut[Index2 + 2] = Index;
- }
- else
- {
- /*
- * Initialise hardware colour map so that use of uninitialised
- * software colour map entries can easily be seen. For 256-colour
- * modes, this doesn't remain effective for very long...
- */
- pATIHW->lut[3] = pATIHW->lut[4] = pATIHW->lut[5] = 0xFFU;
- for (Index = 2; Index < (NumberOf(pATIHW->lut) / 3); Index++)
- {
- Index2 = Index * 3;
- pATIHW->lut[Index2 + 0] = maxColour;
- pATIHW->lut[Index2 + 1] = 0x00U;
- pATIHW->lut[Index2 + 2] = maxColour;
- }
-
-#ifndef AVOID_CPIO
-
- if (pATI->depth == 1)
- {
- rgb blackColour = pScreenInfo->display->blackColour,
- whiteColour = pScreenInfo->display->whiteColour;
-
- if (blackColour.red > maxColour)
- blackColour.red = maxColour;
- if (blackColour.green > maxColour)
- blackColour.green = maxColour;
- if (blackColour.blue > maxColour)
- blackColour.blue = maxColour;
- if (whiteColour.red > maxColour)
- whiteColour.red = maxColour;
- if (whiteColour.green > maxColour)
- whiteColour.green = maxColour;
- if (whiteColour.blue > maxColour)
- whiteColour.blue = maxColour;
-
- if ((blackColour.red == whiteColour.red) &&
- (blackColour.green == whiteColour.green) &&
- (blackColour.blue == whiteColour.blue))
- {
- blackColour.red ^= maxColour;
- blackColour.green ^= maxColour;
- blackColour.blue ^= maxColour;
- }
-
- pATIHW->lut[(MONO_BLACK * 3) + 0] = blackColour.red;
- pATIHW->lut[(MONO_BLACK * 3) + 1] = blackColour.green;
- pATIHW->lut[(MONO_BLACK * 3) + 2] = blackColour.blue;
- pATIHW->lut[(MONO_WHITE * 3) + 0] = whiteColour.red;
- pATIHW->lut[(MONO_WHITE * 3) + 1] = whiteColour.green;
- pATIHW->lut[(MONO_WHITE * 3) + 2] = whiteColour.blue;
- }
-
- if (pATIHW->crtc == ATI_CRTC_VGA)
- {
- /* Initialise overscan to black */
- Index = pATIHW->attr[17] * 3;
- pATIHW->lut[Index + 0] =
- pATIHW->lut[Index + 1] =
- pATIHW->lut[Index + 2] = 0x00U;
- }
-
-#endif /* AVOID_CPIO */
-
- }
-}
-
-/*
- * ATIDACSave --
- *
- * This function is called to save the current RAMDAC state into an ATIHWRec
- * structure occurrence.
- */
-void
-ATIDACSave
-(
- ATIPtr pATI,
- ATIHWPtr pATIHW
-)
-{
- int Index;
-
-#ifdef AVOID_CPIO
-
- pATIHW->dac_read = in8(M64_DAC_READ);
- DACDelay;
- pATIHW->dac_write = in8(M64_DAC_WRITE);
- DACDelay;
- pATIHW->dac_mask = in8(M64_DAC_MASK);
- DACDelay;
-
- /* Save DAC's colour lookup table */
- out8(M64_DAC_MASK, 0xFFU);
- DACDelay;
- out8(M64_DAC_READ, 0x00U);
- DACDelay;
- for (Index = 0; Index < NumberOf(pATIHW->lut); Index++)
- {
- pATIHW->lut[Index] = in8(M64_DAC_DATA);
- DACDelay;
- }
-
- out8(M64_DAC_MASK, pATIHW->dac_mask);
- DACDelay;
- out8(M64_DAC_READ, pATIHW->dac_read);
- DACDelay;
-
-#else /* AVOID_CPIO */
-
- ATISetDACIOPorts(pATI, pATIHW->crtc);
-
- pATIHW->dac_read = inb(pATI->CPIO_DAC_READ);
- DACDelay;
- pATIHW->dac_write = inb(pATI->CPIO_DAC_WRITE);
- DACDelay;
- pATIHW->dac_mask = inb(pATI->CPIO_DAC_MASK);
- DACDelay;
-
- /* Save DAC's colour lookup table */
- outb(pATI->CPIO_DAC_MASK, 0xFFU);
- DACDelay;
- outb(pATI->CPIO_DAC_READ, 0x00U);
- DACDelay;
- for (Index = 0; Index < NumberOf(pATIHW->lut); Index++)
- {
- pATIHW->lut[Index] = inb(pATI->CPIO_DAC_DATA);
- DACDelay;
- }
-
- outb(pATI->CPIO_DAC_MASK, pATIHW->dac_mask);
- DACDelay;
- outb(pATI->CPIO_DAC_READ, pATIHW->dac_read);
- DACDelay;
-
-#endif /* AVOID_CPIO */
-
-}
-
-/*
- * ATIDACSet --
- *
- * This function loads RAMDAC data from an ATIHWRec structure occurrence.
- */
-void
-ATIDACSet
-(
- ATIPtr pATI,
- ATIHWPtr pATIHW
-)
-{
- int Index;
-
-#ifdef AVOID_CPIO
-
- /* Load DAC's colour lookup table */
- out8(M64_DAC_MASK, 0xFFU);
- DACDelay;
- out8(M64_DAC_WRITE, 0x00U);
- DACDelay;
- for (Index = 0; Index < NumberOf(pATIHW->lut); Index++)
- {
- out8(M64_DAC_DATA, pATIHW->lut[Index]);
- DACDelay;
- }
-
- out8(M64_DAC_MASK, pATIHW->dac_mask);
- DACDelay;
- out8(M64_DAC_READ, pATIHW->dac_read);
- DACDelay;
- out8(M64_DAC_WRITE, pATIHW->dac_write);
- DACDelay;
-
-#else /* AVOID_CPIO */
-
- ATISetDACIOPorts(pATI, pATIHW->crtc);
-
- /* Load DAC's colour lookup table */
- outb(pATI->CPIO_DAC_MASK, 0xFFU);
- DACDelay;
- outb(pATI->CPIO_DAC_WRITE, 0x00U);
- DACDelay;
- for (Index = 0; Index < NumberOf(pATIHW->lut); Index++)
- {
- outb(pATI->CPIO_DAC_DATA, pATIHW->lut[Index]);
- DACDelay;
- }
-
- outb(pATI->CPIO_DAC_MASK, pATIHW->dac_mask);
- DACDelay;
- outb(pATI->CPIO_DAC_READ, pATIHW->dac_read);
- DACDelay;
- outb(pATI->CPIO_DAC_WRITE, pATIHW->dac_write);
- DACDelay;
-
-#endif /* AVOID_CPIO */
-
-}
-
-/*
- * ATILoadPalette --
- *
- * This function updates the RAMDAC's LUT and the in-memory copy of it in
- * NewHW.
- */
-void
-ATILoadPalette
-(
- ScrnInfoPtr pScreenInfo,
- int nColours,
- int *Indices,
- LOCO *Colours,
- VisualPtr pVisual
-)
-{
- ATIPtr pATI = ATIPTR(pScreenInfo);
- CARD8 *LUTEntry;
- int i, j, Index;
-
- if (((pVisual->class | DynamicClass) == DirectColor) &&
- ((1 << pVisual->nplanes) > (SizeOf(pATI->NewHW.lut) / 3)))
- {
- int reds = pVisual->redMask >> pVisual->offsetRed;
- int greens = pVisual->greenMask >> pVisual->offsetGreen;
- int blues = pVisual->blueMask >> pVisual->offsetBlue;
-
- int redShift = 8 - pATI->weight.red;
- int greenShift = 8 - pATI->weight.green;
- int blueShift = 8 - pATI->weight.blue;
-
- int redMult = 3 << redShift;
- int greenMult = 3 << greenShift;
- int blueMult = 3 << blueShift;
-
- int minShift;
-
- CARD8 fChanged[SizeOf(pATI->NewHW.lut) / 3];
-
- (void)memset(fChanged, SizeOf(fChanged), 0);
-
- minShift = redShift;
- if (minShift > greenShift)
- minShift = greenShift;
- if (minShift > blueShift)
- minShift = blueShift;
-
- for (i = 0; i < nColours; i++)
- {
- if((Index = Indices[i]) < 0)
- continue;
-
- if (Index <= reds)
- {
- j = Index * redMult;
- pATI->NewHW.lut[j + 0] = Colours[Index].red;
- fChanged[j / 3] = TRUE;
- }
- if (Index <= greens)
- {
- j = Index * greenMult;
- pATI->NewHW.lut[j + 1] = Colours[Index].green;
- fChanged[j / 3] = TRUE;
- }
- if (Index <= blues)
- {
- j = Index * blueMult;
- pATI->NewHW.lut[j + 2] = Colours[Index].blue;
- fChanged[j / 3] = TRUE;
- }
- }
-
- if (pScreenInfo->vtSema || pATI->currentMode)
- {
- /* Rewrite LUT entries that could have been changed */
- i = 1 << minShift;
- LUTEntry = pATI->NewHW.lut;
-
- for (Index = 0;
- Index < (SizeOf(pATI->NewHW.lut) / 3);
- Index += i, LUTEntry += i * 3)
- {
- if (!fChanged[Index])
- continue;
-
-#ifdef AVOID_CPIO
-
- out8(M64_DAC_WRITE, Index);
- DACDelay;
- out8(M64_DAC_DATA, LUTEntry[0]);
- DACDelay;
- out8(M64_DAC_DATA, LUTEntry[1]);
- DACDelay;
- out8(M64_DAC_DATA, LUTEntry[2]);
- DACDelay;
-
-#else /* AVOID_CPIO */
-
- outb(pATI->CPIO_DAC_WRITE, Index);
- DACDelay;
- outb(pATI->CPIO_DAC_DATA, LUTEntry[0]);
- DACDelay;
- outb(pATI->CPIO_DAC_DATA, LUTEntry[1]);
- DACDelay;
- outb(pATI->CPIO_DAC_DATA, LUTEntry[2]);
- DACDelay;
-
-#endif /* AVOID_CPIO */
-
- }
- }
- }
- else
- {
- for (i = 0; i < nColours; i++)
- {
- Index = Indices[i];
- if ((Index < 0) || (Index >= (SizeOf(pATI->NewHW.lut) / 3)))
- continue;
-
- LUTEntry = &pATI->NewHW.lut[Index * 3];
- LUTEntry[0] = Colours[Index].red;
- LUTEntry[1] = Colours[Index].green;
- LUTEntry[2] = Colours[Index].blue;
-
- if (pScreenInfo->vtSema || pATI->currentMode)
- {
-
-#ifdef AVOID_CPIO
-
- out8(M64_DAC_WRITE, Index);
- DACDelay;
- out8(M64_DAC_DATA, LUTEntry[0]);
- DACDelay;
- out8(M64_DAC_DATA, LUTEntry[1]);
- DACDelay;
- out8(M64_DAC_DATA, LUTEntry[2]);
- DACDelay;
-
-#else /* AVOID_CPIO */
-
- outb(pATI->CPIO_DAC_WRITE, Index);
- DACDelay;
- outb(pATI->CPIO_DAC_DATA, LUTEntry[0]);
- DACDelay;
- outb(pATI->CPIO_DAC_DATA, LUTEntry[1]);
- DACDelay;
- outb(pATI->CPIO_DAC_DATA, LUTEntry[2]);
- DACDelay;
-
-#endif /* AVOID_CPIO */
-
- }
- }
- }
-}
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