hpi_driver.h

linux dsp hpi driver

/*********************************************************************
 *            
 *    
 * Filename:      HPI_Driver.h
 * Version:       0.0.1
 * Description:   Implementation for the kernel module debug
 * Status:        Experimental.
 * Author:        snowerlist ([e-mail])
 * Created at:    WuHan
 * Based on code by:  snower
 * 
 *     Copyright (c) 2008.12  WH, All Rights Reserved.
 
 *     This file is for ARM chip of DSP project xxx
 
 *     This program is free software; you can redistribute it and/or 
 *     modify it under the terms of the GNU General Public License as 
 *     published by the Free Software Foundation; either version 2 of 
 *     the License, or (at your option) any later version.
 *  
 ********************************************************************/

/**Begin *******define data type*********/
typedef  char                  s8, CHAR;
typedef  short                 s16, SHORT;
typedef  long                  s32, LONG;
typedef  int                     INT;
typedef  unsigned char     u8, UCHAR;
typedef  unsigned short    u16, USHORT;
typedef  unsigned long     u32, ULONG;
typedef  unsigned int        UINT;
/***********define data type*******End**/



#define DSP_HPI_MINOR   158	/* Major 10, Minor 158, in /dev/DSP_HPI */
#define DSP_HPI_DEV       "DSP_HPI"  /* If you frist use this module in your system ,please do insmod fristly. */
                                                           /* Then you will see you device in /dev/DSP_HPI . */  
#define DSP_HPI_IRQ_NUM        /*Check the datasheet and give the number of you DSP_HPI interrupt line use.*/
#define DSP_HPI_IRQ_FLAG     0

#define DRIVER_VERSION "0.0.1"		/* Driver version number */
#define    MAX_BUFFER_LEN   256
#define    DSP_HPI_ALARM 0x02000000

#define  PHY_ADDR_REG1  0x00000000
#define  PHY_ADDR_REG2  0x00000000
#define  PHY_ADDR_REG3  0x00000000
#define  PHY_ADDR_REG4  0x00000000
#define  REGISTER_LENGTH    4 /*4 Bytes long*/

enum  IOCTL_OPERATION_Index
{
    INTERFACE_SET_CUR_PID = 0,   
    READ_HPI_REG1, 
    READ_HPI_REG2, 
    READ_HPI_REG3, 
    READ_HPI_REG4, 
    WRITE_HPI_REG1,
    WRITE_HPI_REG2,
    WRITE_HPI_REG3,
    WRITE_HPI_REG4,
    OPERATION_COUNT
};

typedef struct tagBufferInfo  /*A ring buffer for read/write operation*/
{
    u8             m_NewDataCount;
    s8             m_pacBuffer[MAX_BUFFER_LEN];  /* buffer of Data */
    
}stBufferInfo, *PstBufferInfo;

typedef struct tagVirtualADDRSPACEInfo /*the vitural address of registers*/
{
    u32  *        m_pViturAddrReg1;
    u32  *        m_pViturAddrReg2;
    u32  *        m_pViturAddrReg3;
    u32  *        m_pViturAddrReg4;    
	
}stADDRSPACEInfo, *PstADDRSPACEInfo;

typedef struct tagDSPHPIInfo 
{        
        stBufferInfo            m_stBufInfo;
	 stADDRSPACEInfo  m_stVirtualAddrSpace;
	 pid_t                      m_tInterfaceProcessID;/* At least, init process exists */ 
	 struct task_struct   *m_pstInterfaceTask;
	 siginfo_t                  m_InterfaceSingal;
        struct semaphore   m_stProctoolSem;
        
        
} stDSPHPIInfo, *pstDSPHPIInfo;