atamx27.h

Microsoft WinCE 6.0 BSP FINAL release source code for use with the i.MX27ADS TO2 WCE600_FINAL_MX27_S

//------------------------------------------------------------------------------
//
// Copyright (C) 2006, Freescale Semiconductor, Inc. All Rights Reserved.
// THIS SOURCE CODE, AND ITS USE AND DISTRIBUTION, IS SUBJECT TO THE TERMS
// AND CONDITIONS OF THE APPLICABLE LICENSE AGREEMENT 
//
//------------------------------------------------------------------------------
//
//    ATAMX27.h
//
//    ATA MX27 device abstraction.
//
//------------------------------------------------------------------------------

#ifndef _ATAMX27_H_
#define _ATAMX27_H_

#include "csp.h"
#include <atamain.h>

#define CLOCK_PERIOD    7
#define PIO_MODE        1
#define MDMA_MODE       2
#define UDMA_MODE       3

////#define USE_DMA_SG_LIST

#define ATA_DMA_BUFFER_SIZE    (MAX_SECT_PER_COMMAND_DMA*512)
#define ATA_DMA_WATERMARK       32  // ATA DMA watermark in bytes

#define ATA_MAX_SECTOR          512
#define ATA_MAX_TRANSFER        (MAX_SECT_PER_COMMAND * ATA_MAX_SECTOR)
#define ATA_MAX_DESC_COUNT      ((ATA_MAX_TRANSFER / 4096) * 2)

class CMX27Disk : public CDisk {
  public:

    // member variables
    static LONG  m_lDeviceCount;

    PCSP_ATA_REG 	g_pVAtaReg;

    DWORD           bIntrPending;
    
    // (DMA support)
    PHYSICAL_ADDRESS 	PhysDMABufferAddr;
    PBYTE 		        pVirtDMABufferAddr;
    UINT8 		        DmaChanATARx, DmaChanATATx; 
    UINT8 		        DmaReqTx ; 
    UINT8 		        DmaReqRx ; 
    
    // constructors/destructors
    CMX27Disk(HKEY hKey);
    virtual ~CMX27Disk();

    // member functions
    virtual VOID ConfigureRegisterBlock(DWORD dwStride);
    virtual BOOL Init(HKEY hActiveKey);
    virtual DWORD MainIoctl(PIOREQ pIOReq);
    virtual BOOL WaitForInterrupt(DWORD dwTimeOut);
    virtual void EnableInterrupt();
    virtual BOOL ConfigPort();
    
    virtual BOOL SetupDMA(PSG_BUF pSgBuf, DWORD dwSgCount, BOOL fRead);
    virtual BOOL BeginDMA(BOOL fRead);
    virtual BOOL EndDMA();
    virtual BOOL AbortDMA();
    virtual BOOL CompleteDMA(PSG_BUF pSgBuf, DWORD dwSgCount, BOOL fRead);
    
    void CopyDiskInfoFromPort();
    void SetTimingRegisters(int speed, int mode, int ClkSpd);
    BOOL ConfigureIOMUXPad(int muxmode);
    BOOL InitializePort(void);
    void ShowRegisters(UCHAR usel);
    inline virtual void CMX27Disk::TakeCS() {
        m_pPort->TakeCS();
    }
    inline virtual void CMX27Disk::ReleaseCS() {
        m_pPort->ReleaseCS();
    }
    inline BOOL CMX27Disk::DoesDeviceAlreadyExist() {
        return FALSE;
    }

    // DMA support
    PSG_BUF m_pDMASgBuf;
    DWORD   m_dwAlignedSgCount;
    DWORD   m_dwAlignedDescCount;
    DWORD   m_dwAlignedSgBytes;
    UINT8   m_DMAChan;
    DWORD   dwDoubleBufferPos;
    BOOL    fDMAIntrEnable;
    
    BOOL    MapDMABuffers(void);
    BOOL    UnmapDMABuffers(void);
    BOOL    DeinitChannelDMA(void);
    BOOL    InitChannelDMA(void);
    BOOL    InitDMA(void) ;
    BOOL    DeInitDMA(void); 
    DWORD   MoveDMABuffer(PSG_BUF pSgBuf, DWORD dwSgIndex, DWORD dwSgCount, BOOL fRead);
};

EXTERN_C
CDisk *
CreateMX27HD(
    HKEY hDevKey
    );

//------------------------------------------------------------------------------
// Functions
//------------------------------------------------------------------------------

extern BOOL BSPATAEnableClock(BOOL bEnable);
extern BOOL BSPATApbcmapping(PHYSICAL_ADDRESS *phyAddr);
extern BOOL BSPATAIOMUXConfig(void);
extern BOOL BSPATADMAChanAlloc(UINT8 *pDmaReqTx, UINT8 *pDmaReqRx);
#endif //_ATAMX27_H_