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68 lines
2.9 KiB
C
68 lines
2.9 KiB
C
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/*
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* Copyright (C) 2016, Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CPU_X86_DRIVERS_LEGACY_PC_SHARED_ISR_H_
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#define CPU_X86_DRIVERS_LEGACY_PC_SHARED_ISR_H_
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#include <stdbool.h>
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#include "pci.h"
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/**
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* The handler function should return true if and only if it handled the
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* interrupt.
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*/
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typedef bool (*shared_isr_handler_t)(void);
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typedef struct shared_isr_client {
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uint8_t irq;
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IRQAGENT agent;
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INTR_PIN pin;
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PIRQ pirq;
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shared_isr_handler_t handler;
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} shared_isr_client_t;
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/* Unlike a non-shared interrupt handler function, an individual interrupt
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* handler for a shared interrupt must not issue an EOI. The EOI is issued by
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* the shared-isr subsystem.
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*/
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#define DEFINE_SHARED_IRQ(irq_, agent_, pin_, pirq_, handler_) \
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static struct shared_isr_client \
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__attribute__((used, section(".shared_isr_data"))) _shared_irq_##irq_ = { \
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.irq = irq_, \
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.agent = agent_, \
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.pin = pin_, \
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.pirq = pirq_, \
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.handler = handler_ \
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}
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void shared_isr_init(void);
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#endif /* CPU_X86_DRIVERS_LEGACY_PC_SHARED_ISR_H_ */
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