diff options
Diffstat (limited to 'usr.sbin/bhyve/riscv/pci_irq.c')
| -rw-r--r-- | usr.sbin/bhyve/riscv/pci_irq.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/riscv/pci_irq.c b/usr.sbin/bhyve/riscv/pci_irq.c new file mode 100644 index 000000000000..dec65ce23196 --- /dev/null +++ b/usr.sbin/bhyve/riscv/pci_irq.c @@ -0,0 +1,66 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2024 Jessica Clarke <jrtc27@FreeBSD.org> + * + * 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. + */ + +#include <vmmapi.h> + +#include "pci_emul.h" +#include "pci_irq.h" + +static int aplic_irqs[4]; + +void +pci_irq_init(int intrs[static 4]) +{ + int i; + + for (i = 0; i < 4; ++i) + aplic_irqs[i] = intrs[i]; +} + +void +pci_irq_assert(struct pci_devinst *pi) +{ + vm_assert_irq(pi->pi_vmctx, pi->pi_lintr.irq.aplic_irq); +} + +void +pci_irq_deassert(struct pci_devinst *pi) +{ + vm_deassert_irq(pi->pi_vmctx, pi->pi_lintr.irq.aplic_irq); +} + +void +pci_irq_route(struct pci_devinst *pi, struct pci_irq *irq) +{ + /* + * Assign swizzled IRQ for this INTx if one is not yet assigned. Must + * match fdt_add_pcie(). + */ + if (irq->aplic_irq == 0) + irq->aplic_irq = + aplic_irqs[(pi->pi_slot + pi->pi_lintr.pin - 1) % 4]; +} |