To support iommufd, vdpa needs to save the ioas_id and the ASID,
which need to be shared between all vhost_vdpa devices.
So Add a pointer in VirtIODevice.
vdpa device need to init it when the dev start, Add all the vdpa device
will read/write this same ptr. TODO: need to add a lock for
read and write
Signed-off-by: Cindy Lu <l...@redhat.com>
---
include/hw/virtio/vhost-vdpa.h | 23 +++++++++++++++++++++++
include/hw/virtio/virtio.h | 5 +++++
2 files changed, 28 insertions(+)
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
index 7997f09a8d..309d4ffc70 100644
--- a/include/hw/virtio/vhost-vdpa.h
+++ b/include/hw/virtio/vhost-vdpa.h
@@ -18,6 +18,10 @@
#include "hw/virtio/vhost-shadow-virtqueue.h"
#include "hw/virtio/virtio.h"
#include "standard-headers/linux/vhost_types.h"
+//#include "sysemu/iommufd.h"
+#include "qemu/osdep.h"
+#include "sysemu/sysemu.h"
+
/*
* ASID dedicated to map guest's addresses. If SVQ is disabled it maps GPA to
@@ -30,6 +34,8 @@ typedef struct VhostVDPAHostNotifier {
void *addr;
} VhostVDPAHostNotifier;
+typedef struct IOMMUFDBackend IOMMUFDBackend;
+
typedef struct vhost_vdpa {
int device_fd;
int index;
@@ -51,6 +57,23 @@ typedef struct vhost_vdpa {
VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
} VhostVDPA;
+
+typedef struct vdpa_iommufd {
+ IOMMUFDBackend *iommufd;
+ struct vhost_dev *dev;
+ /*ioas_id get from IOMMUFD, iommufd need to use this id to map,unmap*/
+ uint32_t ioas_id;
+ /*ASID used for vq*/
+ uint32_t asid;
+ __u32 devid; /*not use */
+ __u32 hwptid; /*not use*/
+ AddressSpace *as;
+ struct vdpa_iommufd *next;
+ // QLIST_ENTRY(vdpa_iommufd) iommufd_next;
+
+} VDPAIOMMUFDState;
+
+
int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range
*iova_range);
int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova,
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 77c6c55929..36b4783466 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -152,6 +152,11 @@ struct VirtIODevice
uint8_t device_endian;
bool use_guest_notifier_mask;
AddressSpace *dma_as;
+ /*this is an ptr point to struct vdpa_iommufd, will change to QLIST if
+ * needed*/
+ /*in this struct saved the ioas_id/ASID that we need to use in iommufd
+ map/unmap, this ioas_id/ASID will share between vqs,so we add the ptr
here*/
+ void *iommufd_ptr;
QLIST_HEAD(, VirtQueue) *vector_queues;
QTAILQ_ENTRY(VirtIODevice) next;
EventNotifier config_notifier;
--
2.34.3
