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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 42 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | /* The Programmable Interrupt Controller management code */ |
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| 23 | |||
| 24 | #ifndef __PIC_H__ |
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| 25 | #define __PIC_H__ |
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| 26 | |||
| 27 | #include <ll/i386/defs.h> |
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| 28 | BEGIN_DEF |
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| 29 | |||
| 30 | #include <ll/i386/hw-data.h> |
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| 31 | #include <ll/i386/hw-instr.h> |
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| 32 | #include <ll/i386/hw-func.h> |
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| 33 | |||
| 34 | #define PIC1_BASE 0x040 /* Interrupt base for each PIC */ |
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| 35 | #define PIC2_BASE 0x070 |
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| 36 | |||
| 37 | void PIC_init(void); |
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| 38 | void PIC_end(void); |
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| 39 | void irq_mask(WORD irqno); |
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| 40 | void irq_unmask(WORD irqno); |
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| 41 | |||
| 42 | INLINE_OP void l1_exc_bind(int i, void (*f)(int n)) |
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| 43 | { |
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| 44 | l1_int_bind(i, f); |
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| 45 | } |
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| 46 | |||
| 47 | INLINE_OP int l1_irq_bind(int irq, void *f) |
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| 48 | { |
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| 49 | int i; |
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| 50 | |||
| 51 | if (irq < 8) { |
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| 52 | i = irq + PIC1_BASE; |
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| 95 | giacomo | 53 | } else if (irq < 16) { |
| 54 | i = irq + PIC2_BASE - 8; |
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| 42 | pj | 55 | } else { |
| 56 | return -1; |
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| 57 | } |
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| 58 | |||
| 59 | l1_int_bind(i, f); |
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| 60 | return 1; |
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| 61 | } |
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| 62 | |||
| 63 | END_DEF |
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| 64 | #endif /* __PIC_H__ */ |