29 lines
676 B
C
29 lines
676 B
C
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/* See COPYRIGHT for copyright information. */
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#ifndef JOS_KERN_PICIRQ_H
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#define JOS_KERN_PICIRQ_H
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#ifndef JOS_KERNEL
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# error "This is a JOS kernel header; user programs should not #include it"
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#endif
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#define MAX_IRQS 16 // Number of IRQs
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// I/O Addresses of the two 8259A programmable interrupt controllers
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#define IO_PIC1 0x20 // Master (IRQs 0-7)
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#define IO_PIC2 0xA0 // Slave (IRQs 8-15)
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#define IRQ_SLAVE 2 // IRQ at which slave connects to master
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#ifndef __ASSEMBLER__
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#include <inc/types.h>
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#include <inc/x86.h>
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extern uint16_t irq_mask_8259A;
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void pic_init(void);
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void irq_setmask_8259A(uint16_t mask);
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#endif // !__ASSEMBLER__
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#endif // !JOS_KERN_PICIRQ_H
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