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