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42 pj 1
/* Project:     OSLib
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 * Description: The OS Construction Kit
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 * Date:                1.6.2000
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 * Idea by:             Luca Abeni & Gerardo Lamastra
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 *
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 * OSLib is an SO project aimed at developing a common, easy-to-use
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 * low-level infrastructure for developing OS kernels and Embedded
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 * Applications; it partially derives from the HARTIK project but it
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 * currently is independently developed.
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 *
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 * OSLib is distributed under GPL License, and some of its code has
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 * been derived from the Linux kernel source; also some important
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 * ideas come from studying the DJGPP go32 extender.
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 *
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 * We acknowledge the Linux Community, Free Software Foundation,
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 * D.J. Delorie and all the other developers who believe in the
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 * freedom of software and ideas.
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 *
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 * For legalese, check out the included GPL license.
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 */
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/*      The Programmable Interrupt Controller management code   */
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#ifndef __PIC_H__
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#define __PIC_H__
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#include <ll/i386/defs.h>
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BEGIN_DEF
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#include <ll/i386/hw-data.h>
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#include <ll/i386/hw-instr.h>
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#include <ll/i386/hw-func.h>
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#define PIC1_BASE 0x040 /* Interrupt base for each PIC */
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#define PIC2_BASE 0x070 
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void PIC_init(void);
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void PIC_end(void);
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void irq_mask(WORD irqno);
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void irq_unmask(WORD irqno);
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INLINE_OP void l1_exc_bind(int i, void (*f)(int n))
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{
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  l1_int_bind(i, f);
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}
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INLINE_OP int l1_irq_bind(int irq, void *f)
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{
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  int i;
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  if (irq < 8) {
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    i = irq + PIC1_BASE;
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  } else if (irq < 16) {
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    i = irq + PIC2_BASE - 8;
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  } else {
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    return -1;
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  }
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  l1_int_bind(i, f);
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  return 1;
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}
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END_DEF
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#endif        /* __PIC_H__ */