1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2014 Hudson River Trading LLC 5 * Written by: John H. Baldwin <jhb@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef __PCI_IRQ_MD_H__ 31 #define __PCI_IRQ_MD_H__ 32 33 struct vmctx; 34 35 struct pci_irq { 36 int pirq_pin; 37 int ioapic_irq; 38 }; 39 40 void pci_irq_init(struct vmctx *ctx); 41 void pci_irq_reserve(int irq); 42 void pci_irq_use(int irq); 43 int pirq_irq(int pin); 44 uint8_t pirq_read(int pin); 45 void pirq_write(struct vmctx *ctx, int pin, uint8_t val); 46 47 static inline void 48 pci_irq_init_irq(struct pci_irq *irq) 49 { 50 irq->pirq_pin = 0; 51 irq->ioapic_irq = 0; 52 } 53 54 static inline uint8_t 55 pci_irq_intline(struct pci_irq *irq) 56 { 57 return (pirq_irq(irq->pirq_pin)); 58 } 59 60 #endif 61