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 **/
40