Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
/*
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* Accelerated irqchip abstraction
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*
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* Copyright Microsoft, Corp. 2025
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*
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* Authors: Ziqiao Zhou <[email protected]>
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* Magnus Kulke <[email protected]>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qemu/error-report.h"
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#include "hw/pci/msi.h"
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#include "system/kvm.h"
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#include "system/mshv.h"
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#include "system/accel-irq.h"
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int accel_irqchip_add_msi_route(AccelRouteChange *c, int vector, PCIDevice *dev)
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{
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if (mshv_msi_via_irqfd_enabled()) {
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return mshv_irqchip_add_msi_route(c, vector, dev);
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}
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if (kvm_enabled()) {
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return kvm_irqchip_add_msi_route(c, vector, dev);
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}
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return -ENOSYS;
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}
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int accel_irqchip_update_msi_route(int vector, MSIMessage msg, PCIDevice *dev)
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{
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if (mshv_msi_via_irqfd_enabled()) {
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return mshv_irqchip_update_msi_route(vector, msg, dev);
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}
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if (kvm_enabled()) {
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return kvm_irqchip_update_msi_route(kvm_state, vector, msg, dev);
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}
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return -ENOSYS;
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}
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void accel_irqchip_commit_route_changes(AccelRouteChange *c)
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{
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if (c->changes) {
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accel_irqchip_commit_routes();
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c->changes = 0;
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}
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}
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void accel_irqchip_commit_routes(void)
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{
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if (mshv_msi_via_irqfd_enabled()) {
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mshv_irqchip_commit_routes(mshv_state);
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}
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if (kvm_enabled()) {
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kvm_irqchip_commit_routes(kvm_state);
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}
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}
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void accel_irqchip_release_virq(int virq)
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{
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if (mshv_msi_via_irqfd_enabled()) {
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mshv_irqchip_release_virq(mshv_state, virq);
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}
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if (kvm_enabled()) {
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kvm_irqchip_release_virq(kvm_state, virq);
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}
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}
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int accel_irqchip_add_irqfd_notifier_gsi(EventNotifier *n, EventNotifier *rn,
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int virq)
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{
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if (mshv_msi_via_irqfd_enabled()) {
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return mshv_irqchip_add_irqfd_notifier_gsi(n, rn, virq);
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}
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if (kvm_enabled()) {
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return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, rn, virq);
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}
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return -ENOSYS;
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}
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int accel_irqchip_remove_irqfd_notifier_gsi(EventNotifier *n, int virq)
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{
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if (mshv_msi_via_irqfd_enabled()) {
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return mshv_irqchip_remove_irqfd_notifier_gsi(n, virq);
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}
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if (kvm_enabled()) {
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return kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, n, virq);
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}
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return -ENOSYS;
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}
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inline AccelRouteChange accel_irqchip_begin_route_changes(void)
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{
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if (mshv_msi_via_irqfd_enabled()) {
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return (AccelRouteChange) {
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.accel = ACCEL(mshv_state),
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.changes = 0,
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};
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}
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if (kvm_enabled()) {
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return (AccelRouteChange) {
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.accel = ACCEL(kvm_state),
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.changes = 0,
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};
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}
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error_report("can't initiate route change, no accel irqchip available");
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abort();
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}
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