1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2021 Intel Corporation 4 */ 5 6 #ifndef _XE_BO_H_ 7 #define _XE_BO_H_ 8 9 #include <drm/ttm/ttm_tt.h> 10 11 #include "xe_bo_types.h" 12 #include "xe_macros.h" 13 #include "xe_vm_types.h" 14 #include "xe_vm.h" 15 16 /** 17 * xe_vm_assert_held(vm) - Assert that the vm's reservation object is held. 18 * @vm: The vm 19 */ 20 #define xe_vm_assert_held(vm) dma_resv_assert_held(xe_vm_resv(vm)) 21 22 23 24 #define XE_DEFAULT_GTT_SIZE_MB 3072ULL /* 3GB by default */ 25 26 #define XE_BO_CREATE_USER_BIT BIT(0) 27 /* The bits below need to be contiguous, or things break */ 28 #define XE_BO_CREATE_SYSTEM_BIT BIT(1) 29 #define XE_BO_CREATE_VRAM0_BIT BIT(2) 30 #define XE_BO_CREATE_VRAM1_BIT BIT(3) 31 #define XE_BO_CREATE_VRAM_MASK (XE_BO_CREATE_VRAM0_BIT | \ 32 XE_BO_CREATE_VRAM1_BIT) 33 /* -- */ 34 #define XE_BO_CREATE_STOLEN_BIT BIT(4) 35 #define XE_BO_CREATE_VRAM_IF_DGFX(tile) \ 36 (IS_DGFX(tile_to_xe(tile)) ? XE_BO_CREATE_VRAM0_BIT << (tile)->id : \ 37 XE_BO_CREATE_SYSTEM_BIT) 38 #define XE_BO_CREATE_GGTT_BIT BIT(5) 39 #define XE_BO_CREATE_IGNORE_MIN_PAGE_SIZE_BIT BIT(6) 40 #define XE_BO_CREATE_PINNED_BIT BIT(7) 41 #define XE_BO_CREATE_NO_RESV_EVICT BIT(8) 42 #define XE_BO_DEFER_BACKING BIT(9) 43 #define XE_BO_SCANOUT_BIT BIT(10) 44 #define XE_BO_FIXED_PLACEMENT_BIT BIT(11) 45 #define XE_BO_PAGETABLE BIT(12) 46 #define XE_BO_NEEDS_CPU_ACCESS BIT(13) 47 /* this one is trigger internally only */ 48 #define XE_BO_INTERNAL_TEST BIT(30) 49 #define XE_BO_INTERNAL_64K BIT(31) 50 51 #define XELPG_PPGTT_PTE_PAT3 BIT_ULL(62) 52 #define XE2_PPGTT_PTE_PAT4 BIT_ULL(61) 53 #define XE_PPGTT_PDE_PDPE_PAT2 BIT_ULL(12) 54 #define XE_PPGTT_PTE_PAT2 BIT_ULL(7) 55 #define XE_PPGTT_PTE_PAT1 BIT_ULL(4) 56 #define XE_PPGTT_PTE_PAT0 BIT_ULL(3) 57 58 #define XE_PTE_SHIFT 12 59 #define XE_PAGE_SIZE (1 << XE_PTE_SHIFT) 60 #define XE_PTE_MASK (XE_PAGE_SIZE - 1) 61 #define XE_PDE_SHIFT (XE_PTE_SHIFT - 3) 62 #define XE_PDES (1 << XE_PDE_SHIFT) 63 #define XE_PDE_MASK (XE_PDES - 1) 64 65 #define XE_64K_PTE_SHIFT 16 66 #define XE_64K_PAGE_SIZE (1 << XE_64K_PTE_SHIFT) 67 #define XE_64K_PTE_MASK (XE_64K_PAGE_SIZE - 1) 68 #define XE_64K_PDE_MASK (XE_PDE_MASK >> 4) 69 70 #define XE_PDE_PS_2M BIT_ULL(7) 71 #define XE_PDPE_PS_1G BIT_ULL(7) 72 #define XE_PDE_IPS_64K BIT_ULL(11) 73 74 #define XE_GGTT_PTE_DM BIT_ULL(1) 75 #define XE_USM_PPGTT_PTE_AE BIT_ULL(10) 76 #define XE_PPGTT_PTE_DM BIT_ULL(11) 77 #define XE_PDE_64K BIT_ULL(6) 78 #define XE_PTE_PS64 BIT_ULL(8) 79 #define XE_PTE_NULL BIT_ULL(9) 80 81 #define XE_PAGE_PRESENT BIT_ULL(0) 82 #define XE_PAGE_RW BIT_ULL(1) 83 84 #define XE_PL_SYSTEM TTM_PL_SYSTEM 85 #define XE_PL_TT TTM_PL_TT 86 #define XE_PL_VRAM0 TTM_PL_VRAM 87 #define XE_PL_VRAM1 (XE_PL_VRAM0 + 1) 88 #define XE_PL_STOLEN (TTM_NUM_MEM_TYPES - 1) 89 90 #define XE_BO_PROPS_INVALID (-1) 91 92 struct sg_table; 93 94 struct xe_bo *xe_bo_alloc(void); 95 void xe_bo_free(struct xe_bo *bo); 96 97 struct xe_bo *___xe_bo_create_locked(struct xe_device *xe, struct xe_bo *bo, 98 struct xe_tile *tile, struct dma_resv *resv, 99 struct ttm_lru_bulk_move *bulk, size_t size, 100 u16 cpu_caching, enum ttm_bo_type type, 101 u32 flags); 102 struct xe_bo * 103 xe_bo_create_locked_range(struct xe_device *xe, 104 struct xe_tile *tile, struct xe_vm *vm, 105 size_t size, u64 start, u64 end, 106 enum ttm_bo_type type, u32 flags); 107 struct xe_bo *xe_bo_create_locked(struct xe_device *xe, struct xe_tile *tile, 108 struct xe_vm *vm, size_t size, 109 enum ttm_bo_type type, u32 flags); 110 struct xe_bo *xe_bo_create(struct xe_device *xe, struct xe_tile *tile, 111 struct xe_vm *vm, size_t size, 112 enum ttm_bo_type type, u32 flags); 113 struct xe_bo *xe_bo_create_user(struct xe_device *xe, struct xe_tile *tile, 114 struct xe_vm *vm, size_t size, 115 u16 cpu_caching, 116 enum ttm_bo_type type, 117 u32 flags); 118 struct xe_bo *xe_bo_create_pin_map(struct xe_device *xe, struct xe_tile *tile, 119 struct xe_vm *vm, size_t size, 120 enum ttm_bo_type type, u32 flags); 121 struct xe_bo *xe_bo_create_pin_map_at(struct xe_device *xe, struct xe_tile *tile, 122 struct xe_vm *vm, size_t size, u64 offset, 123 enum ttm_bo_type type, u32 flags); 124 struct xe_bo *xe_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile, 125 const void *data, size_t size, 126 enum ttm_bo_type type, u32 flags); 127 struct xe_bo *xe_managed_bo_create_pin_map(struct xe_device *xe, struct xe_tile *tile, 128 size_t size, u32 flags); 129 struct xe_bo *xe_managed_bo_create_from_data(struct xe_device *xe, struct xe_tile *tile, 130 const void *data, size_t size, u32 flags); 131 132 int xe_bo_placement_for_flags(struct xe_device *xe, struct xe_bo *bo, 133 u32 bo_flags); 134 135 static inline struct xe_bo *ttm_to_xe_bo(const struct ttm_buffer_object *bo) 136 { 137 return container_of(bo, struct xe_bo, ttm); 138 } 139 140 static inline struct xe_bo *gem_to_xe_bo(const struct drm_gem_object *obj) 141 { 142 return container_of(obj, struct xe_bo, ttm.base); 143 } 144 145 #define xe_bo_device(bo) ttm_to_xe_device((bo)->ttm.bdev) 146 147 static inline struct xe_bo *xe_bo_get(struct xe_bo *bo) 148 { 149 if (bo) 150 drm_gem_object_get(&bo->ttm.base); 151 152 return bo; 153 } 154 155 static inline void xe_bo_put(struct xe_bo *bo) 156 { 157 if (bo) 158 drm_gem_object_put(&bo->ttm.base); 159 } 160 161 static inline void __xe_bo_unset_bulk_move(struct xe_bo *bo) 162 { 163 if (bo) 164 ttm_bo_set_bulk_move(&bo->ttm, NULL); 165 } 166 167 static inline void xe_bo_assert_held(struct xe_bo *bo) 168 { 169 if (bo) 170 dma_resv_assert_held((bo)->ttm.base.resv); 171 } 172 173 int xe_bo_lock(struct xe_bo *bo, bool intr); 174 175 void xe_bo_unlock(struct xe_bo *bo); 176 177 static inline void xe_bo_unlock_vm_held(struct xe_bo *bo) 178 { 179 if (bo) { 180 XE_WARN_ON(bo->vm && bo->ttm.base.resv != xe_vm_resv(bo->vm)); 181 if (bo->vm) 182 xe_vm_assert_held(bo->vm); 183 else 184 dma_resv_unlock(bo->ttm.base.resv); 185 } 186 } 187 188 int xe_bo_pin_external(struct xe_bo *bo); 189 int xe_bo_pin(struct xe_bo *bo); 190 void xe_bo_unpin_external(struct xe_bo *bo); 191 void xe_bo_unpin(struct xe_bo *bo); 192 int xe_bo_validate(struct xe_bo *bo, struct xe_vm *vm, bool allow_res_evict); 193 194 static inline bool xe_bo_is_pinned(struct xe_bo *bo) 195 { 196 return bo->ttm.pin_count; 197 } 198 199 static inline void xe_bo_unpin_map_no_vm(struct xe_bo *bo) 200 { 201 if (likely(bo)) { 202 xe_bo_lock(bo, false); 203 xe_bo_unpin(bo); 204 xe_bo_unlock(bo); 205 206 xe_bo_put(bo); 207 } 208 } 209 210 bool xe_bo_is_xe_bo(struct ttm_buffer_object *bo); 211 dma_addr_t __xe_bo_addr(struct xe_bo *bo, u64 offset, size_t page_size); 212 dma_addr_t xe_bo_addr(struct xe_bo *bo, u64 offset, size_t page_size); 213 214 static inline dma_addr_t 215 xe_bo_main_addr(struct xe_bo *bo, size_t page_size) 216 { 217 return xe_bo_addr(bo, 0, page_size); 218 } 219 220 static inline u32 221 xe_bo_ggtt_addr(struct xe_bo *bo) 222 { 223 XE_WARN_ON(bo->ggtt_node.size > bo->size); 224 XE_WARN_ON(bo->ggtt_node.start + bo->ggtt_node.size > (1ull << 32)); 225 return bo->ggtt_node.start; 226 } 227 228 int xe_bo_vmap(struct xe_bo *bo); 229 void xe_bo_vunmap(struct xe_bo *bo); 230 231 bool mem_type_is_vram(u32 mem_type); 232 bool xe_bo_is_vram(struct xe_bo *bo); 233 bool xe_bo_is_stolen(struct xe_bo *bo); 234 bool xe_bo_is_stolen_devmem(struct xe_bo *bo); 235 uint64_t vram_region_gpu_offset(struct ttm_resource *res); 236 237 bool xe_bo_can_migrate(struct xe_bo *bo, u32 mem_type); 238 239 int xe_bo_migrate(struct xe_bo *bo, u32 mem_type); 240 int xe_bo_evict(struct xe_bo *bo, bool force_alloc); 241 242 int xe_bo_evict_pinned(struct xe_bo *bo); 243 int xe_bo_restore_pinned(struct xe_bo *bo); 244 245 extern struct ttm_device_funcs xe_ttm_funcs; 246 247 int xe_gem_create_ioctl(struct drm_device *dev, void *data, 248 struct drm_file *file); 249 int xe_gem_mmap_offset_ioctl(struct drm_device *dev, void *data, 250 struct drm_file *file); 251 int xe_bo_dumb_create(struct drm_file *file_priv, 252 struct drm_device *dev, 253 struct drm_mode_create_dumb *args); 254 255 bool xe_bo_needs_ccs_pages(struct xe_bo *bo); 256 257 static inline size_t xe_bo_ccs_pages_start(struct xe_bo *bo) 258 { 259 return PAGE_ALIGN(bo->ttm.base.size); 260 } 261 262 static inline bool xe_bo_has_pages(struct xe_bo *bo) 263 { 264 if ((bo->ttm.ttm && ttm_tt_is_populated(bo->ttm.ttm)) || 265 xe_bo_is_vram(bo)) 266 return true; 267 268 return false; 269 } 270 271 void __xe_bo_release_dummy(struct kref *kref); 272 273 /** 274 * xe_bo_put_deferred() - Put a buffer object with delayed final freeing 275 * @bo: The bo to put. 276 * @deferred: List to which to add the buffer object if we cannot put, or 277 * NULL if the function is to put unconditionally. 278 * 279 * Since the final freeing of an object includes both sleeping and (!) 280 * memory allocation in the dma_resv individualization, it's not ok 281 * to put an object from atomic context nor from within a held lock 282 * tainted by reclaim. In such situations we want to defer the final 283 * freeing until we've exited the restricting context, or in the worst 284 * case to a workqueue. 285 * This function either puts the object if possible without the refcount 286 * reaching zero, or adds it to the @deferred list if that was not possible. 287 * The caller needs to follow up with a call to xe_bo_put_commit() to actually 288 * put the bo iff this function returns true. It's safe to always 289 * follow up with a call to xe_bo_put_commit(). 290 * TODO: It's TTM that is the villain here. Perhaps TTM should add an 291 * interface like this. 292 * 293 * Return: true if @bo was the first object put on the @freed list, 294 * false otherwise. 295 */ 296 static inline bool 297 xe_bo_put_deferred(struct xe_bo *bo, struct llist_head *deferred) 298 { 299 if (!deferred) { 300 xe_bo_put(bo); 301 return false; 302 } 303 304 if (!kref_put(&bo->ttm.base.refcount, __xe_bo_release_dummy)) 305 return false; 306 307 return llist_add(&bo->freed, deferred); 308 } 309 310 void xe_bo_put_commit(struct llist_head *deferred); 311 312 struct sg_table *xe_bo_sg(struct xe_bo *bo); 313 314 /* 315 * xe_sg_segment_size() - Provides upper limit for sg segment size. 316 * @dev: device pointer 317 * 318 * Returns the maximum segment size for the 'struct scatterlist' 319 * elements. 320 */ 321 static inline unsigned int xe_sg_segment_size(struct device *dev) 322 { 323 struct scatterlist __maybe_unused sg; 324 size_t max = BIT_ULL(sizeof(sg.length) * 8) - 1; 325 326 max = min_t(size_t, max, dma_max_mapping_size(dev)); 327 328 /* 329 * The iommu_dma_map_sg() function ensures iova allocation doesn't 330 * cross dma segment boundary. It does so by padding some sg elements. 331 * This can cause overflow, ending up with sg->length being set to 0. 332 * Avoid this by ensuring maximum segment size is half of 'max' 333 * rounded down to PAGE_SIZE. 334 */ 335 return round_down(max / 2, PAGE_SIZE); 336 } 337 338 #define i915_gem_object_flush_if_display(obj) ((void)(obj)) 339 340 #if IS_ENABLED(CONFIG_DRM_XE_KUNIT_TEST) 341 /** 342 * xe_bo_is_mem_type - Whether the bo currently resides in the given 343 * TTM memory type 344 * @bo: The bo to check. 345 * @mem_type: The TTM memory type. 346 * 347 * Return: true iff the bo resides in @mem_type, false otherwise. 348 */ 349 static inline bool xe_bo_is_mem_type(struct xe_bo *bo, u32 mem_type) 350 { 351 xe_bo_assert_held(bo); 352 return bo->ttm.resource->mem_type == mem_type; 353 } 354 #endif 355 #endif 356