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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*/
#ifndef _RTE_INTERRUPTS_H_
#define _RTE_INTERRUPTS_H_
/**
* @file
*
* The RTE interrupt interface provides functions to register/unregister
* callbacks for a specific interrupt.
*/
#ifdef __cplusplus
extern "C" {
#endif
/** Interrupt handle */
struct rte_intr_handle;
/** Function to be registered for the specific interrupt */
typedef void (*rte_intr_callback_fn)(struct rte_intr_handle *intr_handle,
void *cb_arg);
#include <exec-env/rte_interrupts.h>
/**
* It registers the callback for the specific interrupt. Multiple
* callbacks cal be registered at the same time.
* @param intr_handle
* Pointer to the interrupt handle.
* @param cb
* callback address.
* @param cb_arg
* address of parameter for callback.
*
* @return
* - On success, zero.
* - On failure, a negative value.
*/
int rte_intr_callback_register(struct rte_intr_handle *intr_handle,
rte_intr_callback_fn cb, void *cb_arg);
/**
* It unregisters the callback according to the specified interrupt handle.
*
* @param intr_handle
* pointer to the interrupt handle.
* @param cb
* callback address.
* @param cb_arg
* address of parameter for callback, (void *)-1 means to remove all
* registered which has the same callback address.
*
* @return
* - On success, return the number of callback entities removed.
* - On failure, a negative value.
*/
int rte_intr_callback_unregister(struct rte_intr_handle *intr_handle,
rte_intr_callback_fn cb, void *cb_arg);
/**
* It enables the interrupt for the specified handle.
*
* @param intr_handle
* pointer to the interrupt handle.
*
* @return
* - On success, zero.
* - On failure, a negative value.
*/
int rte_intr_enable(struct rte_intr_handle *intr_handle);
/**
* It disables the interrupt for the specified handle.
*
* @param intr_handle
* pointer to the interrupt handle.
*
* @return
* - On success, zero.
* - On failure, a negative value.
*/
int rte_intr_disable(struct rte_intr_handle *intr_handle);
#ifdef __cplusplus
}
#endif
#endif
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