40 lines
999 B
C
Executable file
40 lines
999 B
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Definitions for the "Baboon" custom IC on the PowerBook 190.
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*/
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#define BABOON_BASE (0x50F1A000) /* same as IDE controller base */
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#ifndef __ASSEMBLY__
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struct baboon {
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char pad1[208]; /* generic IDE registers, not used here */
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short mb_control; /* Control register:
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* bit 5 : slot 2 power control
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* bit 6 : slot 1 power control
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*/
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char pad2[2];
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short mb_status; /* (0xD4) media bay status register:
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*
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* bit 0: ????
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* bit 1: IDE interrupt active?
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* bit 2: bay status, 0 = full, 1 = empty
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* bit 3: ????
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*/
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char pad3[2]; /* (0xD6) not used */
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short mb_ifr; /* (0xD8) media bay interrupt flags register:
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*
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* bit 0: ????
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* bit 1: IDE controller interrupt
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* bit 2: media bay status change interrupt
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*/
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};
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extern int baboon_present;
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extern void baboon_register_interrupts(void);
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extern void baboon_irq_enable(int);
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extern void baboon_irq_disable(int);
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#endif /* __ASSEMBLY **/
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