release/src-rt-6.x/cfe/cfe/arch/mips/board/p5064/include/z80pio.h

   1 /*
   2  * z80pio.h: Z80 parallel i/o chip register definitions
   3  */
   4
   5 #ifndef __ASSEMBLER__
   6 typedef struct {
   7     unsigned int        a_dat;
   8     unsigned int        b_dat;
   9     unsigned int        a_ctl;
  10     unsigned int        b_ctl;
  11 } zpiodev;
  12 #endif
  13
  14 /* register offsets */
  15 #define ZPIO_A_DAT      0
  16 #define ZPIO_B_DAT      4
  17 #define ZPIO_A_CTL      8
  18 #define ZPIO_B_CTL      12
  19
  20 #define ZPIO_MODE_OUT   0x0f
  21 #define ZPIO_MODE_IN    0x4f
  22 #define ZPIO_MODE_BIDIR 0x8f
  23 #define ZPIO_MODE_CTRL  0xcf
  24
  25 #define ZPIO_ICW_ENABLE 0x80
  26 #define ZPIO_ICW_AND    0x40
  27 #define ZPIO_ICW_HIGH   0x40
  28 #define ZPIO_ICW_MASK   0x40
  29 #define ZPIO_ICW_SET    0x07
  30
  31 #define ZPIO_INT_ENB    0x83
  32 #define ZPIO_INT_DIS    0x03
  33
  34 #define ZPIOB_I2C_SDA   0x80    /* in:  DIMM serial data */
  35 #define ZPIOB_I2C_SCL   0x40    /* out: DIMM serial clock */
  36 #define ZPIOB_I2C_DIR   0x20    /* out: DIMM serial direction (1=out, 0=in)*/
  37 #define ZPIOB_NFAULT    0x01    /* out: centronics NFAULT signal */
  38 #define ZPIOB_OMASK     (ZPIOB_I2C_SCL|ZPIOB_I2C_DIR|ZPIOB_NFAULT)
  39
  40 #ifndef __ASSEMBLER__
  41 /* safe programmatic interface to pio */
  42 unsigned int _zpiob_get (void);
  43 unsigned int _zpiob_set (unsigned int);
  44 unsigned int _zpiob_bis (unsigned int);
  45 unsigned int _zpiob_bic (unsigned int);
  46
  47 void _zpioa_setctl (unsigned int);
  48 unsigned int _zpioa_get (void);
  49 unsigned int _zpioa_set (unsigned int);
  50 unsigned int _zpioa_bis (unsigned int);
  51 unsigned int _zpioa_bic (unsigned int);
  52 #endif