1 /* 2 * Copyright © 2022 Imagination Technologies Ltd. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a copy 5 * of this software and associated documentation files (the "Software"), to deal 6 * in the Software without restriction, including without limitation the rights 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 * copies of the Software, and to permit persons to whom the Software is 9 * furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 */ 23 24 #ifndef PVR_DRM_H 25 #define PVR_DRM_H 26 27 #include <stdbool.h> 28 #include <stdint.h> 29 #include <vulkan/vulkan.h> 30 31 #include "pvr_winsys.h" 32 #include "util/macros.h" 33 #include "util/rwlock.h" 34 #include "util/sparse_array.h" 35 36 struct pvr_drm_winsys_heap { 37 struct pvr_winsys_heap base; 38 }; 39 40 struct pvr_drm_winsys { 41 struct pvr_winsys base; 42 43 /* Packed bvnc */ 44 uint64_t bvnc; 45 46 /* Protects imported BOs creation/freeing, which includes the bo_map member 47 * below. 48 */ 49 struct u_rwlock dmabuf_bo_lock; 50 51 52 /* This array holds all our 'struct pvr_drm_winsys_bo' allocations. We use 53 * this so we can add a refcount to our BOs and check if a particular BO was 54 * already allocated in this device using its GEM handle. This is necessary 55 * to properly manage BO imports, because the kernel doesn't refcount the 56 * underlying BO memory. 57 * 58 * Specifically, when self-importing (i.e. importing a BO into the same 59 * device that created it), the kernel will give us the same BO handle for 60 * both BOs and we must only free it once when both references are 61 * freed. Otherwise, if we are not self-importing, we get two different BO 62 * handles, and we want to free each one individually. 63 * 64 * The refcount is also useful for being able to maintain BOs across 65 * VK object lifetimes, such as pipelines suballocating out of BOs 66 * allocated on the device. 67 */ 68 struct util_sparse_array bo_map; 69 70 /* Required heaps */ 71 struct pvr_drm_winsys_heap general_heap; 72 struct pvr_drm_winsys_heap pds_heap; 73 struct pvr_drm_winsys_heap usc_heap; 74 struct pvr_drm_winsys_heap vis_test_heap; 75 struct pvr_drm_winsys_heap transfer_frag_heap; 76 77 /* Optional heaps */ 78 bool rgn_hdr_heap_present; 79 struct pvr_drm_winsys_heap rgn_hdr_heap; 80 81 /* vma's for carveout memory regions */ 82 struct pvr_winsys_vma *pds_vma; 83 struct pvr_winsys_vma *usc_vma; 84 struct pvr_winsys_vma *general_vma; 85 86 uint32_t vm_context; 87 }; 88 89 /******************************************* 90 helper macros 91 *******************************************/ 92 93 #define to_pvr_drm_winsys(ws) container_of((ws), struct pvr_drm_winsys, base) 94 #define to_pvr_drm_winsys_heap(heap) \ 95 container_of((heap), struct pvr_drm_winsys_heap, base) 96 97 #endif /* PVR_DRM_H */ 98