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/*
* Copyright 2004-2005 The Unichrome Project [unichrome.sf.net]
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sub license,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*
* Wrap around xf86 vgaHW
* Provide general IO calls too as they are not part of the vgaHW implementation
* It's a bit daft to provide this short stuff in a seperate file,
* but then again, we'd only complicate matters in already complicated files.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "via.h"
#include "compiler.h"
#include "xf86.h"
#include "via_driver.h" /* for HAVE_DEBUG */
#include "via_vgahw.h"
/*
* The current vgaHW implementation lacks generic IO
*
*/
/*
*
*/
static
CARD8
ViaVgahwIn(vgaHWPtr hwp, int address)
{
if (hwp->MMIOBase)
return MMIO_IN8(hwp->MMIOBase, hwp->MMIOOffset + address);
else
return inb(hwp->PIOOffset + address);
}
/*
*
*/
static
void
ViaVgahwOut(vgaHWPtr hwp, int address, CARD8 value)
{
if (hwp->MMIOBase)
MMIO_OUT8(hwp->MMIOBase, hwp->MMIOOffset + address, value);
else
outb(hwp->PIOOffset + address, value);
}
/*
* indexed.
*/
static
CARD8
ViaVgahwRead(vgaHWPtr hwp, int indexaddress, CARD8 index,
int valueaddress)
{
ViaVgahwOut(hwp, indexaddress, index);
return ViaVgahwIn(hwp, valueaddress);
}
/*
* indexed.
*/
void
ViaVgahwWrite(vgaHWPtr hwp, int indexaddress, CARD8 index,
int valueaddress, CARD8 value)
{
ViaVgahwOut(hwp, indexaddress, index);
ViaVgahwOut(hwp, valueaddress, value);
}
/*
* This code makes a big change in readability, allows one to clearly
* formulate what is changed.
*
*/
/*
*
*/
void
ViaVgahwMask(vgaHWPtr hwp, int indexaddress, CARD8 index,
int valueaddress, CARD8 value, CARD8 mask)
{
CARD8 tmp;
tmp = ViaVgahwRead(hwp, indexaddress, index, valueaddress);
tmp &= ~mask;
tmp |= (value & mask);
ViaVgahwWrite(hwp, indexaddress, index, valueaddress, tmp);
}
/*
*
*/
void
ViaCrtcMask(vgaHWPtr hwp, CARD8 index, CARD8 value, CARD8 mask)
{
CARD8 tmp;
tmp = hwp->readCrtc(hwp, index);
tmp &= ~mask;
tmp |= (value & mask);
hwp->writeCrtc(hwp, index, tmp);
}
/*
*
*/
void
ViaSeqMask(vgaHWPtr hwp, CARD8 index, CARD8 value, CARD8 mask)
{
CARD8 tmp;
tmp = hwp->readSeq(hwp, index);
tmp &= ~mask;
tmp |= (value & mask);
hwp->writeSeq(hwp, index, tmp);
}
/*
*
*/
void
ViaGrMask(vgaHWPtr hwp, CARD8 index, CARD8 value, CARD8 mask)
{
CARD8 tmp;
tmp = hwp->readGr(hwp, index);
tmp &= ~mask;
tmp |= (value & mask);
hwp->writeGr(hwp, index, tmp);
}
/*
*
*/
#ifdef HAVE_DEBUG
void
ViaVgahwPrint(vgaHWPtr hwp)
{
int i;
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "Printing VGA Sequence registers:\n");
for (i = 0x00; i < 0x80; i++)
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "SR%02X: 0x%02X\n", i, hwp->readSeq(hwp, i));
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "Printing VGA CRTM/C registers:\n");
for (i = 0x00; i < 0x19; i++)
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "CR%02X: 0x%02X\n", i, hwp->readCrtc(hwp, i));
for (i = 0x33; i < 0xA3; i++)
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "CR%02X: 0x%02X\n", i, hwp->readCrtc(hwp, i));
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "Printing VGA Graphics registers:\n");
for (i = 0x00; i < 0x08; i++)
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "GR%02X: 0x%02X\n", i, hwp->readGr(hwp, i));
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "Printing VGA Attribute registers:\n");
for (i = 0x00; i < 0x14; i++)
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "AR%02X: 0x%02X\n", i, hwp->readAttr(hwp, i));
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "Printing VGA Miscellaneous register:\n");
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "Misc: 0x%02X\n", hwp->readMiscOut(hwp));
xf86DrvMsg(hwp->pScrn->scrnIndex, X_INFO, "End of VGA Registers.\n");
}
#endif /* HAVE_DEBUG */
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