mirror of https://gitlab.com/qemu-project/qemu
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
/*
|
|
* Accelerated irqchip abstraction
|
|
*
|
|
* Copyright Microsoft, Corp. 2025
|
|
*
|
|
* Authors: Ziqiao Zhou <ziqiaozhou@microsoft.com>
|
|
* Magnus Kulke <magnuskulke@microsoft.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/pci/msi.h"
|
|
|
|
#include "system/kvm.h"
|
|
#include "system/mshv.h"
|
|
#include "system/accel-irq.h"
|
|
|
|
int accel_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev)
|
|
{
|
|
#ifdef CONFIG_MSHV_IS_POSSIBLE
|
|
if (mshv_msi_via_irqfd_enabled()) {
|
|
return mshv_irqchip_add_msi_route(vector, dev);
|
|
}
|
|
#endif
|
|
if (kvm_enabled()) {
|
|
return kvm_irqchip_add_msi_route(c, vector, dev);
|
|
}
|
|
return -ENOSYS;
|
|
}
|
|
|
|
int accel_irqchip_update_msi_route(int vector, MSIMessage msg, PCIDevice *dev)
|
|
{
|
|
#ifdef CONFIG_MSHV_IS_POSSIBLE
|
|
if (mshv_msi_via_irqfd_enabled()) {
|
|
return mshv_irqchip_update_msi_route(vector, msg, dev);
|
|
}
|
|
#endif
|
|
if (kvm_enabled()) {
|
|
return kvm_irqchip_update_msi_route(kvm_state, vector, msg, dev);
|
|
}
|
|
return -ENOSYS;
|
|
}
|
|
|
|
void accel_irqchip_commit_route_changes(KVMRouteChange *c)
|
|
{
|
|
#ifdef CONFIG_MSHV_IS_POSSIBLE
|
|
if (mshv_msi_via_irqfd_enabled()) {
|
|
mshv_irqchip_commit_routes();
|
|
}
|
|
#endif
|
|
if (kvm_enabled()) {
|
|
kvm_irqchip_commit_route_changes(c);
|
|
}
|
|
}
|
|
|
|
void accel_irqchip_commit_routes(void)
|
|
{
|
|
#ifdef CONFIG_MSHV_IS_POSSIBLE
|
|
if (mshv_msi_via_irqfd_enabled()) {
|
|
mshv_irqchip_commit_routes();
|
|
}
|
|
#endif
|
|
if (kvm_enabled()) {
|
|
kvm_irqchip_commit_routes(kvm_state);
|
|
}
|
|
}
|
|
|
|
void accel_irqchip_release_virq(int virq)
|
|
{
|
|
#ifdef CONFIG_MSHV_IS_POSSIBLE
|
|
if (mshv_msi_via_irqfd_enabled()) {
|
|
mshv_irqchip_release_virq(virq);
|
|
}
|
|
#endif
|
|
if (kvm_enabled()) {
|
|
kvm_irqchip_release_virq(kvm_state, virq);
|
|
}
|
|
}
|
|
|
|
int accel_irqchip_add_irqfd_notifier_gsi(EventNotifier *n, EventNotifier *rn,
|
|
int virq)
|
|
{
|
|
#ifdef CONFIG_MSHV_IS_POSSIBLE
|
|
if (mshv_msi_via_irqfd_enabled()) {
|
|
return mshv_irqchip_add_irqfd_notifier_gsi(n, rn, virq);
|
|
}
|
|
#endif
|
|
if (kvm_enabled()) {
|
|
return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, rn, virq);
|
|
}
|
|
return -ENOSYS;
|
|
}
|
|
|
|
int accel_irqchip_remove_irqfd_notifier_gsi(EventNotifier *n, int virq)
|
|
{
|
|
#ifdef CONFIG_MSHV_IS_POSSIBLE
|
|
if (mshv_msi_via_irqfd_enabled()) {
|
|
return mshv_irqchip_remove_irqfd_notifier_gsi(n, virq);
|
|
}
|
|
#endif
|
|
if (kvm_enabled()) {
|
|
return kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, n, virq);
|
|
}
|
|
return -ENOSYS;
|
|
}
|