pci_irq_machdep.h

/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2014 Hudson River Trading LLC
 * Written by: John H. Baldwin <[email protected]>
 * 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 AUTHOR 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 AUTHOR 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 __PCI_IRQ_MD_H__
#define	__PCI_IRQ_MD_H__

struct vmctx;

struct pci_irq {
	int	pirq_pin;
	int	ioapic_irq;
};

void	pci_irq_init(struct vmctx *ctx);
void	pci_irq_reserve(int irq);
void	pci_irq_use(int irq);
int	pirq_irq(int pin);
uint8_t	pirq_read(int pin);
void	pirq_write(struct vmctx *ctx, int pin, uint8_t val);

static inline void
pci_irq_init_irq(struct pci_irq *irq)
{
	irq->pirq_pin = 0;
	irq->ioapic_irq = 0;
}

static inline uint8_t
pci_irq_intline(struct pci_irq *irq)
{
	return (pirq_irq(irq->pirq_pin));
}

#endif