include/asm-i386/mach-default/io_ports.h

   1 /*
   2  *  arch/i386/mach-generic/io_ports.h
   3  *
   4  *  Machine specific IO port address definition for generic.
   5  *  Written by Osamu Tomita <tomita@cinet.co.jp>
   6  */
   7 #ifndef _MACH_IO_PORTS_H
   8 #define _MACH_IO_PORTS_H
   9
  10 /* i8253A PIT registers */
  11 #define PIT_MODE                0x43
  12 #define PIT_CH0                 0x40
  13 #define PIT_CH2                 0x42
  14
  15 /* i8259A PIC registers */
  16 #define PIC_MASTER_CMD          0x20
  17 #define PIC_MASTER_IMR          0x21
  18 #define PIC_MASTER_ISR          PIC_MASTER_CMD
  19 #define PIC_MASTER_POLL         PIC_MASTER_ISR
  20 #define PIC_MASTER_OCW3         PIC_MASTER_ISR
  21 #define PIC_SLAVE_CMD           0xa0
  22 #define PIC_SLAVE_IMR           0xa1
  23
  24 /* i8259A PIC related value */
  25 #define PIC_CASCADE_IR          2
  26 #define MASTER_ICW4_DEFAULT     0x01
  27 #define SLAVE_ICW4_DEFAULT      0x01
  28 #define PIC_ICW4_AEOI           2
  29
  30 #endif /* !_MACH_IO_PORTS_H */