1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __NOUVEAU_BO_H__ 3 #define __NOUVEAU_BO_H__ 4 5 #include <drm/drm_gem.h> 6 7 struct nouveau_channel; 8 struct nouveau_fence; 9 struct nvkm_vma; 10 11 struct nouveau_bo { 12 struct ttm_buffer_object bo; 13 struct ttm_placement placement; 14 u32 valid_domains; 15 struct ttm_place placements[3]; 16 struct ttm_place busy_placements[3]; 17 bool force_coherent; 18 struct ttm_bo_kmap_obj kmap; 19 struct list_head head; 20 21 /* protected by ttm_bo_reserve() */ 22 struct drm_file *reserved_by; 23 struct list_head entry; 24 int pbbo_index; 25 bool validate_mapped; 26 27 struct list_head vma_list; 28 29 unsigned contig:1; 30 unsigned page:5; 31 unsigned kind:8; 32 unsigned comp:3; 33 unsigned zeta:3; 34 unsigned mode; 35 36 struct nouveau_drm_tile *tile; 37 38 /* Only valid if allocated via nouveau_gem_new() and iff you hold a 39 * gem reference to it! For debugging, use gem.filp != NULL to test 40 * whether it is valid. */ 41 struct drm_gem_object gem; 42 43 /* protect by the ttm reservation lock */ 44 int pin_refcnt; 45 46 struct ttm_bo_kmap_obj dma_buf_vmap; 47 }; 48 49 static inline struct nouveau_bo * 50 nouveau_bo(struct ttm_buffer_object *bo) 51 { 52 return container_of(bo, struct nouveau_bo, bo); 53 } 54 55 static inline int 56 nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo) 57 { 58 struct nouveau_bo *prev; 59 60 if (!pnvbo) 61 return -EINVAL; 62 prev = *pnvbo; 63 64 *pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL; 65 if (prev) { 66 struct ttm_buffer_object *bo = &prev->bo; 67 68 ttm_bo_unref(&bo); 69 } 70 71 return 0; 72 } 73 74 extern struct ttm_bo_driver nouveau_bo_driver; 75 76 void nouveau_bo_move_init(struct nouveau_drm *); 77 int nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags, 78 u32 tile_mode, u32 tile_flags, struct sg_table *sg, 79 struct reservation_object *robj, 80 struct nouveau_bo **); 81 int nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig); 82 int nouveau_bo_unpin(struct nouveau_bo *); 83 int nouveau_bo_map(struct nouveau_bo *); 84 void nouveau_bo_unmap(struct nouveau_bo *); 85 void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy); 86 void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val); 87 u32 nouveau_bo_rd32(struct nouveau_bo *, unsigned index); 88 void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val); 89 void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive); 90 int nouveau_bo_validate(struct nouveau_bo *, bool interruptible, 91 bool no_wait_gpu); 92 void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo); 93 void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo); 94 95 /* TODO: submit equivalent to TTM generic API upstream? */ 96 static inline void __iomem * 97 nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo) 98 { 99 bool is_iomem; 100 void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual( 101 &nvbo->kmap, &is_iomem); 102 WARN_ON_ONCE(ioptr && !is_iomem); 103 return ioptr; 104 } 105 106 static inline void 107 nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo) 108 { 109 if (*pnvbo) { 110 nouveau_bo_unmap(*pnvbo); 111 nouveau_bo_unpin(*pnvbo); 112 nouveau_bo_ref(NULL, pnvbo); 113 } 114 } 115 116 static inline int 117 nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags, 118 struct nouveau_bo **pnvbo) 119 { 120 int ret = nouveau_bo_new(cli, size, align, flags, 121 0, 0, NULL, NULL, pnvbo); 122 if (ret == 0) { 123 ret = nouveau_bo_pin(*pnvbo, flags, true); 124 if (ret == 0) { 125 ret = nouveau_bo_map(*pnvbo); 126 if (ret == 0) 127 return ret; 128 nouveau_bo_unpin(*pnvbo); 129 } 130 nouveau_bo_ref(NULL, pnvbo); 131 } 132 return ret; 133 } 134 #endif 135