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Module interface for interrupt controllers. Might change later.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16269 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2006-02-07 02:31:07 +00:00
parent 3277aade49
commit cda4ca9582
1 changed files with 39 additions and 0 deletions
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headers/os/drivers/interrupt_controller.h Normal file
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/*
* Copyright 2006, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
* All rights reserved. Distributed under the terms of the MIT License.
*/
#ifndef _INTERRUPT_CONTROLLER_H
#define _INTERRUPT_CONTROLLER_H
#include <device_manager.h>
enum {
IRQ_TYPE_LEVEL = 0,
IRQ_TYPE_EDGE = 1,
};
typedef struct interrupt_controller_info {
int cpu_count; // number of supported CPUs
int irq_count; // number of supported IRQs
} interrupt_controller_info;
// interrupt controller drivers
typedef struct interrupt_controller_module_info {
driver_module_info info;
status_t (*get_controller_info)(void *cookie,
interrupt_controller_info *info);
status_t (*enable_io_interrupt)(void *cookie, int irq, int type);
status_t (*disable_io_interrupt)(void *cookie, int irq);
// Returns the IRQ number or a negative value, if the interrupt shall be
// ignore (spurious interrupts). Since more than one interrupt can be
// pending, the function should be called in a loop until it returns a
// negative value.
// Must be called with CPU interrupts disabled.
int (*acknowledge_io_interrupt)(void *cookie);
} interrupt_controller_module_info;
#endif // _INTERRUPT_CONTROLLER_H