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 int device_fd; 36 MemoryListener listener; 37 struct vhost_vdpa_iova_range iova_range; 38 QLIST_HEAD(, vdpa_iommu) iommu_list; 39 40 /* IOVA mapping used by the Shadow Virtqueue */ 41 VhostIOVATree *iova_tree; 42 43 /* Copy of backend features */ 44 uint64_t backend_cap; 45 46 bool iotlb_batch_begin_sent; 47 48 /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ 49 bool shadow_data; 50 } VhostVDPAShared; 51 52 typedef struct vhost_vdpa { 53 int index; 54 uint32_t address_space_id; 55 uint64_t acked_features; 56 bool shadow_vqs_enabled; 57 /* Device suspended successfully */ 58 bool suspended; 59 VhostVDPAShared *shared; 60 GPtrArray *shadow_vqs; 61 const VhostShadowVirtqueueOps *shadow_vq_ops; 62 void *shadow_vq_ops_opaque; 63 struct vhost_dev *dev; 64 Error *migration_blocker; 65 VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX]; 66 IOMMUNotifier n; 67 } VhostVDPA; 68 69 int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range); 70 int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx); 71 72 int vhost_vdpa_dma_map(VhostVDPAShared *s, uint32_t asid, hwaddr iova, 73 hwaddr size, void *vaddr, bool readonly); 74 int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova, 75 hwaddr size); 76 77 typedef struct vdpa_iommu { 78 VhostVDPAShared *dev_shared; 79 IOMMUMemoryRegion *iommu_mr; 80 hwaddr iommu_offset; 81 IOMMUNotifier n; 82 QLIST_ENTRY(vdpa_iommu) iommu_next; 83 } VDPAIOMMUState; 84 85 86 #endif 87