/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.driver.video.ati.mach64;
import org.jnode.driver.video.vgahw.VgaConstants;
import org.jnode.driver.video.vgahw.VgaIO;
import org.jnode.system.resource.MemoryResource;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public class Mach64VgaIO implements VgaIO, VgaConstants, Mach64Constants {
private final MemoryResource mmio;
private final MemoryResource videoRam;
public Mach64VgaIO(MemoryResource videoRam, MemoryResource mmio) {
this.videoRam = videoRam;
this.mmio = mmio;
}
/**
* Gets a 32-bit register from a given (byte) offset
*
* @param addr
* @return
*/
final int getReg8(int addr) {
return mmio.getByte(addr) & 0xFF;
}
/**
* Sets a 8-bit register at a given (byte) offset
*
* @param addr
*/
final void setReg8(int addr, int value) {
mmio.setByte(addr, (byte) value);
}
/**
* Gets a 32-bit register from a given (byte) offset
*
* @param addr
* @return
*/
final int getReg32(int addr) {
return mmio.getInt(addr);
}
/**
* Sets a 32-bit register at a given (byte) offset
*
* @param addr
*/
final void setReg32(int addr, int value) {
mmio.setInt(addr, value);
}
/**
* Patches a 32-bit register at a given (byte) offset. [addr] = ([addr]
* & mask) | value.
*
* @param addr
* @param value
* @param mask
*/
final void setRegP32(int addr, int value, int mask) {
int tmp = mmio.getInt(addr);
tmp &= mask;
tmp |= value & ~mask;
mmio.setInt(addr, tmp);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getATT(int)
*/
public int getATT(int index) {
setReg8(ATT_I, index);
return getReg8(ATT_DR);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getCRT(int)
*/
public int getCRT(int index) {
setReg8(CRTC_I, (byte) index);
return getReg8(CRTC_D);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getDACData()
*/
public int getDACData() {
return getReg8(DAC_DATA);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getGRAF(int)
*/
public int getGRAF(int index) {
setReg8(GRAF_I, index);
return getReg8(GRAF_D);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getMISC()
*/
public int getMISC() {
return getReg8(MISC_R);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getSEQ(int)
*/
public int getSEQ(int index) {
setReg8(SEQ_I, index);
return getReg8(SEQ_D);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getSTAT()
*/
public int getSTAT() {
return getReg8(STATC);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getVideoMem()
*/
public MemoryResource getVideoMem() {
return videoRam;
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setATT(int, int)
*/
public void setATT(int index, int val) {
getSTAT();
setReg8(ATT_I, (byte) index);
setReg8(ATT_DW, (byte) val);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setATTIndex(int)
*/
public void setATTIndex(int index) {
getSTAT();
setReg8(ATT_I, (byte) index);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setCRT(int, int)
*/
public void setCRT(int index, int val) {
setReg8(CRTC_I, (byte) index);
setReg8(CRTC_D, (byte) val);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setDACData(int)
*/
public void setDACData(int data) {
setReg8(DAC_D, data);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setDACReadIndex(int)
*/
public void setDACReadIndex(int index) {
setReg8(DAC_RI, index);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setDACWriteIndex(int)
*/
public void setDACWriteIndex(int index) {
setReg8(DAC_WI, index);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setGRAF(int, int)
*/
public void setGRAF(int index, int val) {
setReg8(GRAF_I, (byte) index);
setReg8(GRAF_D, (byte) val);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setMISC(int)
*/
public void setMISC(int val) {
setSEQ(0, 1);
setReg8(MISC_W, (byte) val);
setSEQ(0, 3);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setSEQ(int, int)
*/
public void setSEQ(int index, int val) {
setReg8(SEQ_I, (byte) index);
setReg8(SEQ_D, (byte) val);
}
/**
* Gets a palette entry.
*/
final void getPaletteEntry(int colorIndex, byte[] r, byte[] g, byte[] b) {
setReg8(DAC_W_INDEX, colorIndex);
r[colorIndex] = (byte) getReg8(DAC_DATA);
g[colorIndex] = (byte) getReg8(DAC_DATA);
b[colorIndex] = (byte) getReg8(DAC_DATA);
}
/**
* Sets a palette entry. This method assumes 8-bit palette entries.
*/
final void setPaletteEntry(int colorIndex, int r, int g, int b) {
setReg8(DAC_W_INDEX, colorIndex);
setReg8(DAC_DATA, r);
setReg8(DAC_DATA, g);
setReg8(DAC_DATA, b);
}
/**
* Disable all mach64 interrupts.
*/
final void disableIRQ() {
setReg32(CRTC_INT_CNTL, 0);
}
}