1 /* 2 * Copyright 2019 Google LLC 3 * SPDX-License-Identifier: MIT 4 * 5 * based in part on anv and radv which are: 6 * Copyright © 2015 Intel Corporation 7 * Copyright © 2016 Red Hat. 8 * Copyright © 2016 Bas Nieuwenhuizen 9 */ 10 11 #ifndef VN_DEVICE_MEMORY_H 12 #define VN_DEVICE_MEMORY_H 13 14 #include "vn_common.h" 15 16 struct vn_device_memory { 17 struct vn_device_memory_base base; 18 19 /* non-NULL when mappable or external */ 20 struct vn_renderer_bo *base_bo; 21 22 /* ensure renderer side resource create is called after vkAllocateMemory 23 * 24 * 1. driver submits vkAllocateMemory (alloc) via ring for a ring seqno 25 * 2. driver submits via vq to wait for above ring to reach the seqno 26 * 3. driver creates virtgpu bo from renderer VkDeviceMemory 27 * 28 * ensure renderer side resource destroy is called after vkAllocateMemory 29 * 30 * 1. driver submits vkAllocateMemory (import) via ring for a ring seqno 31 * 2. driver submits via vq to wait for above ring to reach the seqno 32 * 3. driver destroys virtgpu bo 33 */ 34 bool bo_ring_seqno_valid; 35 uint32_t bo_ring_seqno; 36 37 /* ensure renderer side vkFreeMemory is called after vkGetMemoryFdKHR 38 * 39 * 1. driver creates virtgpu bo from renderer VkDeviceMemory 40 * 2. driver submits via vq to update the vq seqno 41 * 3, driver submits via ring to wait for vq reaching above seqno 42 * 4. driver submits vkFreeMemory via ring 43 * 44 * To be noted: a successful virtgpu mmap implies a roundtrip, so 45 * vn_FreeMemory after that no longer has to wait. 46 */ 47 bool bo_roundtrip_seqno_valid; 48 uint64_t bo_roundtrip_seqno; 49 50 VkDeviceSize map_end; 51 }; 52 VK_DEFINE_NONDISP_HANDLE_CASTS(vn_device_memory, 53 base.base.base, 54 VkDeviceMemory, 55 VK_OBJECT_TYPE_DEVICE_MEMORY) 56 57 VkResult 58 vn_device_memory_import_dma_buf(struct vn_device *dev, 59 struct vn_device_memory *mem, 60 const VkMemoryAllocateInfo *alloc_info, 61 bool force_unmappable, 62 int fd); 63 64 VkResult 65 vn_get_memory_dma_buf_properties(struct vn_device *dev, 66 int fd, 67 uint64_t *out_alloc_size, 68 uint32_t *out_mem_type_bits); 69 70 #endif /* VN_DEVICE_MEMORY_H */ 71