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