81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
/*
|
|
* dma.h
|
|
*
|
|
* Created on: Aug 20, 2011
|
|
* Author: Tiberiu
|
|
*/
|
|
|
|
#ifndef DMA_H_
|
|
#define DMA_H_
|
|
|
|
#include <types.h>
|
|
|
|
enum DmaRegisters
|
|
{
|
|
DmaRegisterStatus = 0x08,
|
|
DmaRegisterCommand = 0x08,
|
|
DmaRegisterRequest = 0x09,
|
|
DmaRegisterSingleChannelMask = 0x0A,
|
|
DmaRegisterMode = 0x0B,
|
|
DmaRegisterFlipFlopReset = 0x0C,
|
|
DmaRegisterIntermediate = 0x0D,
|
|
DmaRegisterMasterReset = 0x0D,
|
|
DmaRegisterMaskReset = 0x0E,
|
|
DmaRegisterMultichannelMask = 0x0F,
|
|
|
|
DmaRegisterChannel0Address = 0x00,
|
|
DmaRegisterChannel1Address = 0x02,
|
|
DmaRegisterChannel2Address = 0x04,
|
|
DmaRegisterChannel3Address = 0x06,
|
|
DmaRegisterChannel4Address = 0xC0,
|
|
DmaRegisterChannel5Address = 0xC4,
|
|
DmaRegisterChannel6Address = 0xC8,
|
|
DmaRegisterChannel7Address = 0xCC,
|
|
|
|
DmaRegisterChannel0Count = 0x01,
|
|
DmaRegisterChannel1Count = 0x03,
|
|
DmaRegisterChannel2Count = 0x05,
|
|
DmaRegisterChannel3Count = 0x07,
|
|
DmaRegisterChannel4Count = 0xC2,
|
|
DmaRegisterChannel5Count = 0xC6,
|
|
DmaRegisterChannel6Count = 0xCA,
|
|
DmaRegisterChannel7Count = 0xCE,
|
|
|
|
DmaRegisterChannel1PageAddress = 0x83,
|
|
DmaRegisterChannel2PageAddress = 0x81,
|
|
DmaRegisterChannel3PageAddress = 0x82,
|
|
DmaRegisterChannel5PageAddress = 0x8B,
|
|
DmaRegisterChannel6PageAddress = 0x89,
|
|
DmaRegisterChannel7PageAddress = 0x8A
|
|
};
|
|
|
|
enum DmaModes
|
|
{
|
|
DmaModeChannelMask = 0x3,
|
|
|
|
DmaModeSelfTest = 0,
|
|
DmaModeWrite = 0x8,
|
|
DmaModeRead = 0x4,
|
|
DmaModeAutoReinit = 0x10,
|
|
DmaModeDown = 0x20,
|
|
|
|
DmaModeTransferOnDemand = 0,
|
|
DmaModeTransferSingleDma = 0x40,
|
|
DmaModeTransferBlockDma = 0x80,
|
|
DmaModeTransferCascade = 0xC0
|
|
};
|
|
|
|
extern void DmaSetAddress (uint8 channel, uint8 low, uint8 high);
|
|
extern void DmaSetCount (uint8 channel, uint8 low, uint8 high);
|
|
extern void DmaSetExternalPageRegisters (uint8 channel, uint8 val);
|
|
extern void DmaSetMode (uint8 channel, uint8 mode);
|
|
|
|
extern void DmaResetFlipFlop (uint8 channel);
|
|
extern void DmaReset ();
|
|
|
|
extern void DmaMaskChannel(uint8 channel);
|
|
extern void DmaUnmaskChannel (uint8 channel);
|
|
extern void DmaUnmaskAll ();
|
|
|
|
#endif /* DMA_H_ */
|