bb000fff0a
Will be used in following patches. DISABLING(-1) means SVQ is being switched off to passthrough mode. ENABLING(1) means passthrough VQs are being switched to SVQ. DONE(0) means SVQ switching is completed. Message-Id: <1707910082-10243-11-git-send-email-si-wei.liu@oracle.com> Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* vhost-vdpa.h
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*
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* Copyright(c) 2017-2018 Intel Corporation.
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* Copyright(c) 2020 Red Hat, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef HW_VIRTIO_VHOST_VDPA_H
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#define HW_VIRTIO_VHOST_VDPA_H
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#include <gmodule.h>
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#include "hw/virtio/vhost-iova-tree.h"
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#include "hw/virtio/vhost-shadow-virtqueue.h"
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#include "hw/virtio/virtio.h"
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#include "standard-headers/linux/vhost_types.h"
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/*
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* ASID dedicated to map guest's addresses. If SVQ is disabled it maps GPA to
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* qemu's IOVA. If SVQ is enabled it maps also the SVQ vring here
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*/
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#define VHOST_VDPA_GUEST_PA_ASID 0
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typedef struct VhostVDPAHostNotifier {
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MemoryRegion mr;
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void *addr;
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} VhostVDPAHostNotifier;
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typedef enum SVQTransitionState {
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SVQ_TSTATE_DISABLING = -1,
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SVQ_TSTATE_DONE,
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SVQ_TSTATE_ENABLING
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} SVQTransitionState;
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/* Info shared by all vhost_vdpa device models */
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typedef struct vhost_vdpa_shared {
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int device_fd;
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MemoryListener listener;
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struct vhost_vdpa_iova_range iova_range;
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QLIST_HEAD(, vdpa_iommu) iommu_list;
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/* IOVA mapping used by the Shadow Virtqueue */
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VhostIOVATree *iova_tree;
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/* Copy of backend features */
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uint64_t backend_cap;
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bool iotlb_batch_begin_sent;
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/* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */
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bool shadow_data;
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/* SVQ switching is in progress, or already completed? */
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SVQTransitionState svq_switching;
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} VhostVDPAShared;
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typedef struct vhost_vdpa {
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int index;
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uint32_t address_space_id;
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uint64_t acked_features;
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bool shadow_vqs_enabled;
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/* Device suspended successfully */
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bool suspended;
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VhostVDPAShared *shared;
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GPtrArray *shadow_vqs;
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const VhostShadowVirtqueueOps *shadow_vq_ops;
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void *shadow_vq_ops_opaque;
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struct vhost_dev *dev;
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Error *migration_blocker;
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VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
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IOMMUNotifier n;
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} VhostVDPA;
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int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range);
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int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx);
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int vhost_vdpa_dma_map(VhostVDPAShared *s, uint32_t asid, hwaddr iova,
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hwaddr size, void *vaddr, bool readonly);
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int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova,
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hwaddr size);
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typedef struct vdpa_iommu {
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VhostVDPAShared *dev_shared;
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IOMMUMemoryRegion *iommu_mr;
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hwaddr iommu_offset;
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IOMMUNotifier n;
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QLIST_ENTRY(vdpa_iommu) iommu_next;
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} VDPAIOMMUState;
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#endif
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