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/*
* Copyright (c) 2016, Linaro Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 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 HOLDER 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 __KERNEL_INTERRUPT_H
#define __KERNEL_INTERRUPT_H
#include <types_ext.h>
#include <sys/queue.h>
#define ITRF_TRIGGER_LEVEL (1 << 0)
struct itr_chip {
const struct itr_ops *ops;
};
struct itr_ops {
void (*add)(struct itr_chip *chip, size_t it, uint32_t flags);
void (*enable)(struct itr_chip *chip, size_t it);
void (*disable)(struct itr_chip *chip, size_t it);
void (*raise_pi)(struct itr_chip *chip, size_t it);
void (*raise_sgi)(struct itr_chip *chip, size_t it,
uint8_t cpu_mask);
void (*set_affinity)(struct itr_chip *chip, size_t it,
uint8_t cpu_mask);
};
enum itr_return {
ITRR_NONE,
ITRR_HANDLED,
};
struct itr_handler {
size_t it;
uint32_t flags;
enum itr_return (*handler)(struct itr_handler *h);
void *data;
SLIST_ENTRY(itr_handler) link;
};
void itr_init(struct itr_chip *data);
void itr_handle(size_t it);
void itr_add(struct itr_handler *handler);
void itr_enable(size_t it);
void itr_disable(size_t it);
/* raise the Peripheral Interrupt corresponding to the interrupt ID */
void itr_raise_pi(size_t it);
/*
* raise the Software Generated Interrupt corresponding to the interrupt ID,
* the cpu_mask represents which cpu interface to forward.
*/
void itr_raise_sgi(size_t it, uint8_t cpu_mask);
/*
* let corresponding interrupt forward to the cpu interface
* according to the cpu_mask.
*/
void itr_set_affinity(size_t it, uint8_t cpu_mask);
#endif /*__KERNEL_INTERRUPT_H*/
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