mac_baboon.h

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/*
 * Definitions for the "Baboon" custom IC on the PowerBook 190.
 */

#define BABOON_BASE (0x50F1A000)    /* same as IDE controller base */

#ifndef __ASSEMBLY__

struct baboon {
    char    pad1[208];  /* generic IDE registers, not used here */
    short   mb_control; /* Control register:
                 * bit 5 : slot 2 power control
                 * bit 6 : slot 1 power control
                 */
    char    pad2[2];
    short   mb_status;  /* (0xD4) media bay status register:
                 *
                 * bit 0: ????
                 * bit 1: IDE interrupt active?
                 * bit 2: bay status, 0 = full, 1 = empty
                 * bit 3: ????
                 */
    char    pad3[2];    /* (0xD6) not used */
    short   mb_ifr;     /* (0xD8) media bay interrupt flags register:
                 *
                 * bit 0: ????
                 * bit 1: IDE controller interrupt
                 * bit 2: media bay status change interrupt
                 */
};

extern int baboon_present;

extern void baboon_register_interrupts(void);
extern void baboon_irq_enable(int);
extern void baboon_irq_disable(int);

#endif /* __ASSEMBLY **/