0,0 → 1,93 |
/* |
* Copyright (C) 2006 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup genericinterrupt |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef KERN_IRQ_H_ |
#define KERN_IRQ_H_ |
|
#include <arch/types.h> |
#include <adt/list.h> |
|
typedef int32_t inr_t; |
typedef int32_t devno_t; |
|
typedef enum { |
IRQ_DECLINE, /**< Decline to service. */ |
IRQ_ACCEPT /**< Accept to service. */ |
} irq_ownership_t; |
|
typedef enum { |
IRQ_TRIGGER_LEVEL = 1, |
IRQ_TRIGGER_EDGE |
} irq_trigger_t; |
|
typedef struct irq irq_t; |
|
typedef void (* irq_handler_t)(irq_t *irq, void *arg, ...); |
|
/** Structure representing one device IRQ. |
* |
* If one device has multiple interrupts, there will |
* be multiple irq_t instantions with the same |
* devno. |
*/ |
struct irq { |
/** Hash table link. */ |
link_t link; |
|
/** Unique device number. -1 if not yet assigned. */ |
devno_t devno; |
|
/** Actual IRQ number. -1 if not yet assigned. */ |
inr_t inr; |
/** Task ID of the task to be notified about the IRQ or 0. */ |
task_id_t notif; |
/** Trigger level of the IRQ.*/ |
irq_trigger_t trigger; |
/** Claim ownership of the IRQ. */ |
irq_ownership_t (* claim)(void); |
/** Handler for this IRQ and device. */ |
irq_handler_t handler; |
/** Argument for the handler. */ |
void *arg; |
}; |
|
extern void irq_init(count_t inrs, count_t chains); |
extern void irq_initialize(irq_t *irq); |
extern void irq_register(irq_t *irq); |
extern irq_t *irq_dispatch(inr_t inr); |
|
#endif |
|
/** @} |
*/ |