xv6/picirq.c File Reference

#include "types.h"
#include "x86.h"
#include "traps.h"

Go to the source code of this file.

Defines
#define	IO_PIC1   0x20
#define	IO_PIC2   0xA0
#define	IRQ_SLAVE   2
Functions
static void	picsetmask (ushort mask)
void	picenable (int irq)
void	picinit (void)
Variables
static ushort	irqmask = 0xFFFF & ~(1<<IRQ_SLAVE)

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Define Documentation

#define IO_PIC1   0x20

Definition at line 8 of file picirq.c.

Referenced by picinit(), and picsetmask().

#define IO_PIC2   0xA0

Definition at line 9 of file picirq.c.

Referenced by picinit(), and picsetmask().

#define IRQ_SLAVE   2

Definition at line 11 of file picirq.c.

Referenced by picinit().

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Function Documentation

void picenable

(

int

irq

)

Definition at line 26 of file picirq.c.

References irqmask, and picsetmask().

Referenced by consoleinit(), ideinit(), timerinit(), and uartinit().

void picinit

(

void

)

Definition at line 33 of file picirq.c.

References IO_PIC1, IO_PIC2, IRQ_SLAVE, irqmask, outb(), picsetmask(), and T_IRQ0.

Referenced by mpmain().

static void picsetmask

(

ushort

mask

)

[static]

Definition at line 18 of file picirq.c.

References IO_PIC1, IO_PIC2, irqmask, and outb().

Referenced by picenable(), and picinit().

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Variable Documentation

ushort irqmask = 0xFFFF & ~(1<<IRQ_SLAVE) [static]

Definition at line 15 of file picirq.c.

Referenced by picenable(), picinit(), and picsetmask().