ide_x_hw.c

UCOS-II在VC++6.0环境下的调试及编译

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the RD DATA register.
*/

FS_u16 FS_IDE_HW_X_GetData(FS_u32 Unit) {
  FS_u16 data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x00);
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetFeatures
*
  Description:
  FS driver hardware layer function. Set the FEATURES register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the FEATURES register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetFeatures(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x02, 0x01, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetError
*
  Description:
  FS driver hardware layer function. Read the ERROR register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the ERROR register.
*/

unsigned char FS_IDE_HW_X_GetError(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x01) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetSectorCount
*
  Description:
  FS driver hardware layer function. Set the SECTOR COUNT register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the SECTOR COUNT register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetSectorCount(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x02, 0x02, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetSectorCount
*
  Description:
  FS driver hardware layer function. Read the SECTOR COUNT register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the SECTOR COUNT register.
*/

unsigned char FS_IDE_HW_X_GetSectorCount(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x02) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetSectorNo
*
  Description:
  FS driver hardware layer function. Set the SECTOR NUMBER register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the SECTOR NUMBER register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetSectorNo(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x02, 0x03, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetSectorNo
*
  Description:
  FS driver hardware layer function. Read the SECTOR NUMBER register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the SECTOR NUMBER register.
*/

unsigned char FS_IDE_HW_X_GetSectorNo(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x03) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetCylLow
*
  Description:
  FS driver hardware layer function. Set the CYLINDER LOW register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the CYLINDER LOW register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetCylLow(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x02, 0x04, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetCylLow
*
  Description:
  FS driver hardware layer function. Read the CYLINDER LOW register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the CYLINDER LOW register.
*/

unsigned char FS_IDE_HW_X_GetCylLow(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x04) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetCylHigh
*
  Description:
  FS driver hardware layer function. Set the CYLINDER HIGH register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the CYLINDER HIGH register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetCylHigh(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x02, 0x05, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetCylHigh
*
  Description:
  FS driver hardware layer function. Read the CYLINDER HIGH register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the CYLINDER HIGH register.
*/

unsigned char FS_IDE_HW_X_GetCylHigh(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x05) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetDevice
*
  Description:
  FS driver hardware layer function. Set the DEVICE/HEAD register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the DEVICE/HEAD register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetDevice(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x02, 0x06, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetDevice
*
  Description:
  FS driver hardware layer function. Read the DEVICE/HEAD register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the DEVICE/HEAD register.
*/

unsigned char FS_IDE_HW_X_GetDevice(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x06) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetCommand
*
  Description:
  FS driver hardware layer function. Set the COMMAND register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the COMMAND register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetCommand(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x02, 0x07, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetStatus
*
  Description:
  FS driver hardware layer function. Read the STATUS register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the STATUS register.
*/

unsigned char FS_IDE_HW_X_GetStatus(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x02, 0x07) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_SetDevControl
*
  Description:
  FS driver hardware layer function. Set the DEVICE CONTROL register.

  Parameters:
  Unit        - Unit number.
  Data        - Value to write to the DEVICE CONTROL register.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_SetDevControl(FS_u32 Unit, unsigned char Data) {
  _FS_IDE_HW_WriteBUS(Unit, 0x01, 0x06, Data);
}


/*********************************************************************
*
*             FS_IDE_HW_X_GetAltStatus
*
  Description:
  FS driver hardware layer function. Read the ALTERNATE STATUS register.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  Value of the ALTERNATE STATUS register.
*/

unsigned char FS_IDE_HW_X_GetAltStatus(FS_u32 Unit) {
  unsigned char data;

  data = _FS_IDE_HW_ReadBUS(Unit, 0x01, 0x06) & 0xff;
  return data;
}


/*********************************************************************
*
*             FS_IDE_HW_X_DetectStatus
*
  Description:
  FS driver hardware layer function. Check if the device is present.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  ==0         - Device is connected.
  !=0         - Device has not been found.
*/

char FS_IDE_HW_X_DetectStatus(FS_u32 Unit) {
  static char init;

  if (!init) {
    init  = 1;
    PD7   =  0xff;    /* P70 - P77 output */
    P7    =  0xff;
    PD8   =  0xf0;    /* P80 - P83 input / P84 - P87 output  */
    P8    =  0xff;
    PRCR  |= 0x04;    /* allow PD9 change */
    PD9   =  0x00;    /* P90 - P97 input */
    PRCR  &= 0xfb;    /* disable PD9 change */
    PD10  =  0x00;    /* P100 - P107 input */
  }
  /* check CD1 & CD2 */
  if (P8 & 0x03) {
    return 1;
  }
  return 0;
}


/*********************************************************************
*
*             FS_IDE_HW_X_HWReset
*
  Description:
  FS driver hardware layer function. This function is called, when 
  the driver detects a new media is present. For ATA HD drives, there 
  is no action required and this function can be empty.
  When using a CF card, please be aware, that the card needs to be
  power cycled while ~OE is grounded. If the card is inserted, VCC & 
  GND will provide the card before ~OE is connected and the card will 
  be in PC Card ATA mode.

  Parameters:
  Unit        - Unit number.
 
  Return value:
  None.
*/

void FS_IDE_HW_X_HWReset(FS_u32 Unit) {
  volatile unsigned long int to;
  
  if (Unit!=0) {
    return;
  }
  P8 |= 0x10;             /* power off */
  PD7     = 0x00;
  to = 10000;
  while (to) {
    to--;
  }
  PD7 = 0xff;
  P8 &= 0xef;             /* power on */
  P7 |= 0x80;             /* RESET high */
  P7 &= 0x7f;             /* RESET low */
  FS__IDE_DELAY_RESET;
  P7 |= 0x80;             /* RESET high */
}

#endif /* FS_USE_IDE_DRIVER */