root/include/asm-m68k/amihdreg.h

/* */

INCLUDED FROM

   1 #ifndef _LINUX_AMIHDREG_H
   2 #define _LINUX_AMIHDREG_H
   3 
   4 /*
   5  * This file contains some defines for the Amiga IDE hd controller.
   6  * Various sources. Check out some definitions (see comments with
   7  * a ques).
   8  */
   9 
  10 #define IDE_DISABLE_IRQ  0x02
  11 #define IDE_ENABLE_IRQ   0x00
  12  
  13 /* Bases of the hard drive controller */
  14 #define HD_BASE_A4000   0xdd2020
  15 #define HD_BASE_A1200   0xda0000
  16 
  17 /* Offsets from one of the above bases */
  18 #define AMI_HD_ERROR    (0x06)          /* see err-bits */
  19 #define AMI_HD_NSECTOR  (0x0a)          /* nr of sectors to read/write */
  20 #define AMI_HD_SECTOR   (0x0e)          /* starting sector */
  21 #define AMI_HD_LCYL     (0x12)          /* starting cylinder */
  22 #define AMI_HD_HCYL     (0x16)          /* high byte of starting cyl */
  23 #define AMI_HD_SELECT   (0x1a)          /* 101dhhhh , d=drive, hhhh=head */
  24 #define AMI_HD_STATUS   (0x1e)          /* see status-bits */
  25 #define AMI_HD_CMD      (0x101a)
  26 
  27 /* These are at different offsets from the base */
  28 #define HD_A4000_IRQ    (0xdd3020)      /* MSB = 1, Harddisk is source of interrupt */
  29 #define HD_A1200_IRQ    (0xda9000)      /* MSB = 1, Harddisk is source of interrupt */
  30 
  31 #endif

/* */