1 /* 2 * vhost-vdpa.h 3 * 4 * Copyright(c) 2017-2018 Intel Corporation. 5 * Copyright(c) 2020 Red Hat, Inc. 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or later. 8 * See the COPYING file in the top-level directory. 9 * 10 */ 11 12 #ifndef HW_VIRTIO_VHOST_VDPA_H 13 #define HW_VIRTIO_VHOST_VDPA_H 14 15 #include <gmodule.h> 16 17 #include "hw/virtio/vhost-iova-tree.h" 18 #include "hw/virtio/vhost-shadow-virtqueue.h" 19 #include "hw/virtio/virtio.h" 20 #include "standard-headers/linux/vhost_types.h" 21 22 /* 23 * ASID dedicated to map guest's addresses. If SVQ is disabled it maps GPA to 24 * qemu's IOVA. If SVQ is enabled it maps also the SVQ vring here 25 */ 26 #define VHOST_VDPA_GUEST_PA_ASID 0 27 28 typedef struct VhostVDPAHostNotifier { 29 MemoryRegion mr; 30 void *addr; 31 } VhostVDPAHostNotifier; 32 33 /* Info shared by all vhost_vdpa device models */ 34 typedef struct vhost_vdpa_shared { 35 struct vhost_vdpa_iova_range iova_range; 36 37 /* IOVA mapping used by the Shadow Virtqueue */ 38 VhostIOVATree *iova_tree; 39 } VhostVDPAShared; 40 41 typedef struct vhost_vdpa { 42 int device_fd; 43 int index; 44 uint32_t msg_type; 45 bool iotlb_batch_begin_sent; 46 uint32_t address_space_id; 47 MemoryListener listener; 48 uint64_t acked_features; 49 bool shadow_vqs_enabled; 50 /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ 51 bool shadow_data; 52 /* Device suspended successfully */ 53 bool suspended; 54 VhostVDPAShared *shared; 55 GPtrArray *shadow_vqs; 56 const VhostShadowVirtqueueOps *shadow_vq_ops; 57 void *shadow_vq_ops_opaque; 58 struct vhost_dev *dev; 59 Error *migration_blocker; 60 VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX]; 61 QLIST_HEAD(, vdpa_iommu) iommu_list; 62 IOMMUNotifier n; 63 } VhostVDPA; 64 65 int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range); 66 int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx); 67 68 int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, 69 hwaddr size, void *vaddr, bool readonly); 70 int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, 71 hwaddr size); 72 73 typedef struct vdpa_iommu { 74 struct vhost_vdpa *dev; 75 IOMMUMemoryRegion *iommu_mr; 76 hwaddr iommu_offset; 77 IOMMUNotifier n; 78 QLIST_ENTRY(vdpa_iommu) iommu_next; 79 } VDPAIOMMUState; 80 81 82 #endif 83