Reset implementation depends on the container backend. Let's
introduce a VFIOContainer class function and register a generic
reset handler that will be able to call the right reset function
depending on the container type. Also, let's move the
registration/unregistration to a place that is not backend-specific
(first vfio address space created instead of the first group).
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx>
---
include/hw/vfio/vfio-container-base.h | 2 ++
hw/vfio/as.c | 18 ++++++++++++++++++
hw/vfio/container-base.c | 9 +++++++++
hw/vfio/container.c | 27 +++++++++++++++------------
4 files changed, 44 insertions(+), 12 deletions(-)
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
index 5e47faf293..8ffd94f8ae 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -97,6 +97,7 @@ int vfio_container_dma_map(VFIOContainer *container,
int vfio_container_dma_unmap(VFIOContainer *container,
hwaddr iova, ram_addr_t size,
IOMMUTLBEntry *iotlb);
+int vfio_container_reset(VFIOContainer *container);
bool vfio_container_devices_all_dirty_tracking(VFIOContainer *container);
void vfio_container_set_dirty_page_tracking(VFIOContainer *container,
bool start);
@@ -135,6 +136,7 @@ struct VFIOIOMMUBackendOpsClass {
IOMMUTLBEntry *iotlb);
int (*attach_device)(VFIODevice *vbasedev, AddressSpace *as, Error **errp);
void (*detach_device)(VFIODevice *vbasedev);
+ int (*reset)(VFIOContainer *container);
/* migration feature */
bool (*devices_all_dirty_tracking)(VFIOContainer *container);
void (*set_dirty_page_tracking)(VFIOContainer *container, bool start);
diff --git a/hw/vfio/as.c b/hw/vfio/as.c
index d212974b9b..f186d0b789 100644
--- a/hw/vfio/as.c
+++ b/hw/vfio/as.c
@@ -823,6 +823,18 @@ const MemoryListener vfio_memory_listener = {
.log_sync = vfio_listener_log_sync,
};
+void vfio_reset_handler(void *opaque)
+{
+ VFIOAddressSpace *space;
+ VFIOContainer *bcontainer;
+
+ QLIST_FOREACH(space, &vfio_address_spaces, list) {
+ QLIST_FOREACH(bcontainer, &space->containers, next) {
+ vfio_container_reset(bcontainer);
+ }
+ }
+}
+
VFIOAddressSpace *vfio_get_address_space(AddressSpace *as)
{
VFIOAddressSpace *space;
@@ -838,6 +850,9 @@ VFIOAddressSpace *vfio_get_address_space(AddressSpace *as)
space->as = as;
QLIST_INIT(&space->containers);
+ if (QLIST_EMPTY(&vfio_address_spaces)) {
+ qemu_register_reset(vfio_reset_handler, NULL);
+ }
QLIST_INSERT_HEAD(&vfio_address_spaces, space, list);
return space;
@@ -849,6 +864,9 @@ void vfio_put_address_space(VFIOAddressSpace *space)
QLIST_REMOVE(space, list);
g_free(space);
}
+ if (QLIST_EMPTY(&vfio_address_spaces)) {
+ qemu_unregister_reset(vfio_reset_handler, NULL);
+ }
}
int vfio_attach_device(VFIODevice *vbasedev, AddressSpace *as, Error **errp)
diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c
index b4ce0cd89a..3ae939c6c9 100644
--- a/hw/vfio/container-base.c
+++ b/hw/vfio/container-base.c
@@ -58,6 +58,15 @@ int vfio_container_dma_unmap(VFIOContainer *container,
return container->ops->dma_unmap(container, iova, size, iotlb);
}
+int vfio_container_reset(VFIOContainer *container)
+{
+ if (!container->ops->reset) {
+ return -ENOENT;
+ }
+
+ return container->ops->reset(container);
+}
+
void vfio_container_set_dirty_page_tracking(VFIOContainer *container,
bool start)
{
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index e99d12f4d8..61caf388c2 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -520,12 +520,16 @@ bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
return true;
}
-void vfio_reset_handler(void *opaque)
+static int vfio_legacy_container_reset(VFIOContainer *bcontainer)
{
+ VFIOLegacyContainer *container = container_of(bcontainer,
+ VFIOLegacyContainer,
+ bcontainer);
VFIOGroup *group;
VFIODevice *vbasedev;
+ int ret, final_ret = 0;
- QLIST_FOREACH(group, &vfio_group_list, next) {
+ QLIST_FOREACH(group, &container->group_list, container_next) {
QLIST_FOREACH(vbasedev, &group->device_list, next) {
if (vbasedev->dev->realized) {
vbasedev->ops->vfio_compute_needs_reset(vbasedev);
@@ -533,13 +537,19 @@ void vfio_reset_handler(void *opaque)
}
}
- QLIST_FOREACH(group, &vfio_group_list, next) {
+ QLIST_FOREACH(group, &container->group_list, next) {
QLIST_FOREACH(vbasedev, &group->device_list, next) {
if (vbasedev->dev->realized && vbasedev->needs_reset) {
- vbasedev->ops->vfio_hot_reset_multi(vbasedev);
+ ret = vbasedev->ops->vfio_hot_reset_multi(vbasedev);
+ if (ret) {
+ error_report("failed to reset %s (%d)",
+ vbasedev->name, ret);
+ final_ret = ret;
+ }
}
}
}
+ return final_ret;
}
static void vfio_kvm_device_add_group(VFIOGroup *group)
@@ -1045,10 +1055,6 @@ static VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp)
goto close_fd_exit;
}
- if (QLIST_EMPTY(&vfio_group_list)) {
- qemu_register_reset(vfio_reset_handler, NULL);
- }
-
QLIST_INSERT_HEAD(&vfio_group_list, group, next);
return group;
@@ -1077,10 +1083,6 @@ static void vfio_put_group(VFIOGroup *group)
trace_vfio_put_group(group->fd);
close(group->fd);
g_free(group);
-
- if (QLIST_EMPTY(&vfio_group_list)) {
- qemu_unregister_reset(vfio_reset_handler, NULL);
- }
}
static int vfio_get_device(VFIOGroup *group, const char *name,
@@ -1334,6 +1336,7 @@ static void vfio_iommu_backend_legacy_ops_class_init(ObjectClass *oc,
ops->check_extension = vfio_legacy_container_check_extension;
ops->attach_device = vfio_legacy_attach_device;
ops->detach_device = vfio_legacy_detach_device;
+ ops->reset = vfio_legacy_container_reset;
}
static const TypeInfo vfio_iommu_backend_legacy_ops_type = {
--
2.37.3
