/*
* $Id$
*
* 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.cirrus;
import org.apache.log4j.Logger;
import org.jnode.driver.video.ddc.DisplayDataChannelAPI;
import org.jnode.system.resource.IOResource;
import org.jnode.system.resource.MemoryResource;
/**
* @author peda
*/
public final class CirrusMMIO implements CirrusConstants, DisplayDataChannelAPI {
/** My logger */
private static final Logger log = Logger.getLogger(CirrusMMIO.class);
@SuppressWarnings("unused")
private final MemoryResource mmio;
private final IOResource ports;
/**
* Create a new instance
*
* @param mmio
*/
public CirrusMMIO(MemoryResource mmio, IOResource ports) {
this.mmio = mmio;
this.ports = ports;
}
public void closeDDC1() {
// nothing todo here
}
/**
* Not implemented by kvm's cirrus emulation!
*/
public boolean getDDC1Bit() {
ports.outPortByte(SRX_SEQUENCER_INDEX, SR8_DDC2B);
int data = ports.inPortByte(SRX_SEQUENCER_DATA) & 0xFF;
if ((data & 0x40) == 0) {
log.error("DDC2B/I2C configured in EEPROM mode!");
return false;
}
// Anything else to check?
return (data & (1 << 7)) != 0;
}
public void setupDDC1() {
ports.outPortByte(SRX_SEQUENCER_INDEX, SR8_DDC2B);
ports.outPortByte(SRX_SEQUENCER_DATA, 1 << 6); // activate DDC2B Configuration
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getATT(int)
*
* public int getATT(int index) { getSTAT(); mmio.setByte(NV8_ATTRINDW,
* (byte) (index | 0x20)); return mmio.getByte(NV8_ATTRDATR) & 0xff; }
*/
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getCRT(int)
*/
public int getCRT(int index) {
ports.outPortByte(CRX_CRTC_INDEX, index);
return ports.inPortByte(CRX_CRTC_DATA);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getDACData()
*/
public int getDACData() {
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
return ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getGRAF(int)
*
public int getGRAF(int index) {
mmio.setByte(NV8_GRPHIND, (byte) index);
return mmio.getByte(NV8_GRPHDAT) & 0xff;
}*/
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getMISC()
*/
public int getMISC() {
return ports.inPortByte(MISC_MISCELLANEOUS_OUTPUT_READ) & 0xff;
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getSEQ(int)
*/
public int getSEQ(int index) {
ports.outPortByte(SRX_SEQUENCER_INDEX, (byte) index);
return ports.inPortByte(SRX_SEQUENCER_DATA) & 0xff;
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#getSTAT()
*/
public int getSTAT() {
return ports.inPortByte(STAT_INPUT_STATUS_REGISTER1) & 0xff;
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setATT(int, int)
*
public void setATT(int index, int val) {
getSTAT();
mmio.setByte(NV8_ATTRINDW, (byte) (index | 0x20));
mmio.setByte(NV8_ATTRDATW, (byte) val);
}*/
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setATTIndex(int)
*
public void setATTIndex(int index) {
getSTAT();
mmio.setByte(NV8_ATTRINDW, (byte) (index | 0x20));
}*/
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setCRT(int, int)
*/
public void setCRT(int index, int val) {
ports.outPortByte(CRX_CRTC_INDEX, index);
ports.outPortByte(CRX_CRTC_DATA, val);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setDACData(int)
*/
public void setDACData(int data) {
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
ports.inPortByte(HDR_HIDDEN_DAC_REGISTER);
ports.outPortByte(HDR_HIDDEN_DAC_REGISTER, data);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setDACReadIndex(int)
*
public void setDACReadIndex(int index) {
setReg8(NV8_PALINDR, index);
}*/
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setDACWriteIndex(int)
*
public void setDACWriteIndex(int index) {
setReg8(NV8_PALINDW, index);
}*/
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setGRAF(int, int)
*
public void setGRAF(int index, int val) {
mmio.setShort(NV16_GRPHIND, (short) ((index & 0xFF) | ((val & 0xFF) << 8)));
}*/
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setMISC(int)
*/
public void setMISC(int val) {
setSEQ(SR0_SEQUENCER_RESET, 0);
ports.outPortByte(MISC_MISCELLANEOUS_OUTPUT_WRITE, val);
setSEQ(SR0_SEQUENCER_RESET, 3);
}
/**
* @see org.jnode.driver.video.vgahw.VgaIO#setSEQ(int, int)
*/
public void setSEQ(int index, int val) {
ports.outPortByte(SRX_SEQUENCER_INDEX, index);
ports.outPortByte(SRX_SEQUENCER_DATA, val);
}
/**
* Set a FB value at the given offset
*
* @param offset
* @param value
*
public void setFB(int offset, int value) {
mmio.setInt(PFB_OFS + offset, value);
}*/
/**
* Get a FB value at the given offset
*
* @param offset
*
public int getFB(int offset) {
return mmio.getInt(PFB_OFS + offset);
}*/
/**
* Set a FIFO value at the given offset
*
* @param offset
* @param value
*
public void setFIFO(int offset, int value) {
mmio.setInt(PFIFO_OFS + offset, value);
}*/
/**
* Gets an 8-bit MMIO value
*
* @param index
* @return
*
final int getReg8(int index) {
return mmio.getByte(index) & 0xFF;
}*/
/**
* Gets an 16-bit MMIO value
*
* @param index
* @return
*
final int getReg16(int index) {
return mmio.getShort(index) & 0xFFFF;
}*/
/**
* Gets an 32-bit MMIO value
*
* @param index
* @return
*
final int getReg32(int index) {
return mmio.getInt(index);
}*/
/**
* Sets an 8-bit MMIO value
*
* @param index
*
final void setReg8(int index, int value) {
mmio.setByte(index, (byte) value);
}*/
/**
* Gets an 16-bit MMIO value
*
* @param index
*
final void setReg16(int index, int value) {
mmio.setShort(index, (short) value);
}*/
/**
* Gets an 32-bit MMIO value
*
* @param index
*
final void setReg32(int index, int value) {
mmio.setInt(index, value);
}*/
}