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
pci_irq_init_irq(struct pci_irq * irq)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
pci_irq_intline(struct pci_irq * irq)55 pci_irq_intline(struct pci_irq *irq)
56 {
57 return (pirq_irq(irq->pirq_pin));
58 }
59
60 #endif
61