arch/m68k/include/asm/mac_baboon.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Definitions for the "Baboon" custom IC on the PowerBook 190.
   4  */
   5
   6 #define BABOON_BASE (0x50F1A000)        /* same as IDE controller base */
   7
   8 #ifndef __ASSEMBLY__
   9
  10 struct baboon {
  11         char    pad1[208];      /* generic IDE registers, not used here */
  12         short   mb_control;     /* Control register:
  13                                  * bit 5 : slot 2 power control
  14                                  * bit 6 : slot 1 power control
  15                                  */
  16         char    pad2[2];
  17         short   mb_status;      /* (0xD4) media bay status register:
  18                                  *
  19                                  * bit 0: ????
  20                                  * bit 1: IDE interrupt active?
  21                                  * bit 2: bay status, 0 = full, 1 = empty
  22                                  * bit 3: ????
  23                                  */
  24         char    pad3[2];        /* (0xD6) not used */
  25         short   mb_ifr;         /* (0xD8) media bay interrupt flags register:
  26                                  *
  27                                  * bit 0: ????
  28                                  * bit 1: IDE controller interrupt
  29                                  * bit 2: media bay status change interrupt
  30                                  */
  31 };
  32
  33 extern int baboon_present;
  34
  35 extern void baboon_register_interrupts(void);
  36 extern void baboon_irq_enable(int);
  37 extern void baboon_irq_disable(int);
  38
  39 #endif /* __ASSEMBLY **/