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
10struct 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
33extern int baboon_present;
34
35extern void baboon_register_interrupts(void);
36extern void baboon_irq_enable(int);
37extern void baboon_irq_disable(int);
38
39#endif /* __ASSEMBLY **/
40