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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 424 | giacomo | 1 | /* |
| 2 | * arch/i386/mach-pc9800/io_ports.h |
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| 3 | * |
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| 4 | * Machine specific IO port address definition for PC-9800. |
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| 5 | * Written by Osamu Tomita <tomita@cinet.co.jp> |
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| 6 | */ |
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| 7 | #ifndef _MACH_IO_PORTS_H |
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| 8 | #define _MACH_IO_PORTS_H |
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| 9 | |||
| 10 | /* i8253A PIT registers */ |
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| 11 | #define PIT_MODE 0x77 |
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| 12 | #define PIT_CH0 0x71 |
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| 13 | #define PIT_CH2 0x75 |
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| 14 | |||
| 15 | /* i8259A PIC registers */ |
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| 16 | #define PIC_MASTER_CMD 0x00 |
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| 17 | #define PIC_MASTER_IMR 0x02 |
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| 18 | #define PIC_MASTER_ISR PIC_MASTER_CMD |
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| 19 | #define PIC_MASTER_POLL PIC_MASTER_ISR |
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| 20 | #define PIC_MASTER_OCW3 PIC_MASTER_ISR |
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| 21 | #define PIC_SLAVE_CMD 0x08 |
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| 22 | #define PIC_SLAVE_IMR 0x0a |
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| 23 | |||
| 24 | /* i8259A PIC related values */ |
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| 25 | #define PIC_CASCADE_IR 7 |
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| 26 | #define MASTER_ICW4_DEFAULT 0x1d |
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| 27 | #define SLAVE_ICW4_DEFAULT 0x09 |
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| 28 | #define PIC_ICW4_AEOI 0x02 |
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| 29 | |||
| 30 | #endif /* !_MACH_IO_PORTS_H */ |