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 **/