1*0efad4acSJessica Clarke /*-
2*0efad4acSJessica Clarke * SPDX-License-Identifier: BSD-2-Clause
3*0efad4acSJessica Clarke *
4*0efad4acSJessica Clarke * Copyright (c) 2024 Jessica Clarke <jrtc27@FreeBSD.org>
5*0efad4acSJessica Clarke *
6*0efad4acSJessica Clarke * Redistribution and use in source and binary forms, with or without
7*0efad4acSJessica Clarke * modification, are permitted provided that the following conditions
8*0efad4acSJessica Clarke * are met:
9*0efad4acSJessica Clarke * 1. Redistributions of source code must retain the above copyright
10*0efad4acSJessica Clarke * notice, this list of conditions and the following disclaimer.
11*0efad4acSJessica Clarke * 2. Redistributions in binary form must reproduce the above copyright
12*0efad4acSJessica Clarke * notice, this list of conditions and the following disclaimer in the
13*0efad4acSJessica Clarke * documentation and/or other materials provided with the distribution.
14*0efad4acSJessica Clarke *
15*0efad4acSJessica Clarke * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16*0efad4acSJessica Clarke * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17*0efad4acSJessica Clarke * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18*0efad4acSJessica Clarke * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19*0efad4acSJessica Clarke * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20*0efad4acSJessica Clarke * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21*0efad4acSJessica Clarke * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22*0efad4acSJessica Clarke * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23*0efad4acSJessica Clarke * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24*0efad4acSJessica Clarke * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25*0efad4acSJessica Clarke * SUCH DAMAGE.
26*0efad4acSJessica Clarke */
27*0efad4acSJessica Clarke
28*0efad4acSJessica Clarke #include <vmmapi.h>
29*0efad4acSJessica Clarke
30*0efad4acSJessica Clarke #include "pci_emul.h"
31*0efad4acSJessica Clarke #include "pci_irq.h"
32*0efad4acSJessica Clarke
33*0efad4acSJessica Clarke static int gic_irqs[4];
34*0efad4acSJessica Clarke
35*0efad4acSJessica Clarke void
pci_irq_init(int intrs[static4])36*0efad4acSJessica Clarke pci_irq_init(int intrs[static 4])
37*0efad4acSJessica Clarke {
38*0efad4acSJessica Clarke int i;
39*0efad4acSJessica Clarke
40*0efad4acSJessica Clarke for (i = 0; i < 4; ++i)
41*0efad4acSJessica Clarke gic_irqs[i] = intrs[i];
42*0efad4acSJessica Clarke }
43*0efad4acSJessica Clarke
44*0efad4acSJessica Clarke void
pci_irq_assert(struct pci_devinst * pi)45*0efad4acSJessica Clarke pci_irq_assert(struct pci_devinst *pi)
46*0efad4acSJessica Clarke {
47*0efad4acSJessica Clarke vm_assert_irq(pi->pi_vmctx, pi->pi_lintr.irq.gic_irq);
48*0efad4acSJessica Clarke }
49*0efad4acSJessica Clarke
50*0efad4acSJessica Clarke void
pci_irq_deassert(struct pci_devinst * pi)51*0efad4acSJessica Clarke pci_irq_deassert(struct pci_devinst *pi)
52*0efad4acSJessica Clarke {
53*0efad4acSJessica Clarke vm_deassert_irq(pi->pi_vmctx, pi->pi_lintr.irq.gic_irq);
54*0efad4acSJessica Clarke }
55*0efad4acSJessica Clarke
56*0efad4acSJessica Clarke void
pci_irq_route(struct pci_devinst * pi,struct pci_irq * irq)57*0efad4acSJessica Clarke pci_irq_route(struct pci_devinst *pi, struct pci_irq *irq)
58*0efad4acSJessica Clarke {
59*0efad4acSJessica Clarke /*
60*0efad4acSJessica Clarke * Assign swizzled IRQ for this INTx if one is not yet assigned. Must
61*0efad4acSJessica Clarke * match fdt_add_pcie().
62*0efad4acSJessica Clarke */
63*0efad4acSJessica Clarke if (irq->gic_irq == 0)
64*0efad4acSJessica Clarke irq->gic_irq =
65*0efad4acSJessica Clarke gic_irqs[(pi->pi_slot + pi->pi_lintr.pin - 1) % 4];
66*0efad4acSJessica Clarke }
67