1 /* 2 * Copyright 2016 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 */ 23 24 #ifndef __AMDGPU_TTM_H__ 25 #define __AMDGPU_TTM_H__ 26 27 #include <linux/dma-direction.h> 28 #include <drm/gpu_scheduler.h> 29 #include <drm/ttm/ttm_placement.h> 30 #include "amdgpu_vram_mgr.h" 31 32 #define AMDGPU_PL_GDS (TTM_PL_PRIV + 0) 33 #define AMDGPU_PL_GWS (TTM_PL_PRIV + 1) 34 #define AMDGPU_PL_OA (TTM_PL_PRIV + 2) 35 #define AMDGPU_PL_PREEMPT (TTM_PL_PRIV + 3) 36 #define AMDGPU_PL_DOORBELL (TTM_PL_PRIV + 4) 37 #define __AMDGPU_PL_NUM (TTM_PL_PRIV + 5) 38 39 #define AMDGPU_GTT_MAX_TRANSFER_SIZE 512 40 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS 2 41 42 extern const struct attribute_group amdgpu_vram_mgr_attr_group; 43 extern const struct attribute_group amdgpu_gtt_mgr_attr_group; 44 45 struct hmm_range; 46 47 struct amdgpu_gtt_mgr { 48 struct ttm_resource_manager manager; 49 struct drm_mm mm; 50 spinlock_t lock; 51 }; 52 53 struct amdgpu_mman { 54 struct ttm_device bdev; 55 struct ttm_pool *ttm_pools; 56 bool initialized; 57 void __iomem *aper_base_kaddr; 58 59 /* buffer handling */ 60 const struct amdgpu_buffer_funcs *buffer_funcs; 61 struct amdgpu_ring *buffer_funcs_ring; 62 bool buffer_funcs_enabled; 63 64 struct mutex gtt_window_lock; 65 /* High priority scheduler entity for buffer moves */ 66 struct drm_sched_entity high_pr; 67 /* Low priority scheduler entity for VRAM clearing */ 68 struct drm_sched_entity low_pr; 69 70 struct amdgpu_vram_mgr vram_mgr; 71 struct amdgpu_gtt_mgr gtt_mgr; 72 struct ttm_resource_manager preempt_mgr; 73 74 uint64_t stolen_vga_size; 75 struct amdgpu_bo *stolen_vga_memory; 76 uint64_t stolen_extended_size; 77 struct amdgpu_bo *stolen_extended_memory; 78 bool keep_stolen_vga_memory; 79 80 struct amdgpu_bo *stolen_reserved_memory; 81 uint64_t stolen_reserved_offset; 82 uint64_t stolen_reserved_size; 83 84 /* discovery */ 85 uint8_t *discovery_bin; 86 uint32_t discovery_tmr_size; 87 /* fw reserved memory */ 88 struct amdgpu_bo *fw_reserved_memory; 89 90 /* firmware VRAM reservation */ 91 u64 fw_vram_usage_start_offset; 92 u64 fw_vram_usage_size; 93 struct amdgpu_bo *fw_vram_usage_reserved_bo; 94 void *fw_vram_usage_va; 95 96 /* driver VRAM reservation */ 97 u64 drv_vram_usage_start_offset; 98 u64 drv_vram_usage_size; 99 struct amdgpu_bo *drv_vram_usage_reserved_bo; 100 void *drv_vram_usage_va; 101 102 /* PAGE_SIZE'd BO for process memory r/w over SDMA. */ 103 struct amdgpu_bo *sdma_access_bo; 104 void *sdma_access_ptr; 105 }; 106 107 struct amdgpu_copy_mem { 108 struct ttm_buffer_object *bo; 109 struct ttm_resource *mem; 110 unsigned long offset; 111 }; 112 113 #define AMDGPU_COPY_FLAGS_TMZ (1 << 0) 114 #define AMDGPU_COPY_FLAGS_READ_DECOMPRESSED (1 << 1) 115 #define AMDGPU_COPY_FLAGS_WRITE_COMPRESSED (1 << 2) 116 #define AMDGPU_COPY_FLAGS_MAX_COMPRESSED_SHIFT 3 117 #define AMDGPU_COPY_FLAGS_MAX_COMPRESSED_MASK 0x03 118 #define AMDGPU_COPY_FLAGS_NUMBER_TYPE_SHIFT 5 119 #define AMDGPU_COPY_FLAGS_NUMBER_TYPE_MASK 0x07 120 #define AMDGPU_COPY_FLAGS_DATA_FORMAT_SHIFT 8 121 #define AMDGPU_COPY_FLAGS_DATA_FORMAT_MASK 0x3f 122 #define AMDGPU_COPY_FLAGS_WRITE_COMPRESS_DISABLE_SHIFT 14 123 #define AMDGPU_COPY_FLAGS_WRITE_COMPRESS_DISABLE_MASK 0x1 124 125 #define AMDGPU_COPY_FLAGS_SET(field, value) \ 126 (((__u32)(value) & AMDGPU_COPY_FLAGS_##field##_MASK) << AMDGPU_COPY_FLAGS_##field##_SHIFT) 127 #define AMDGPU_COPY_FLAGS_GET(value, field) \ 128 (((__u32)(value) >> AMDGPU_COPY_FLAGS_##field##_SHIFT) & AMDGPU_COPY_FLAGS_##field##_MASK) 129 130 int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size); 131 void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev); 132 int amdgpu_preempt_mgr_init(struct amdgpu_device *adev); 133 void amdgpu_preempt_mgr_fini(struct amdgpu_device *adev); 134 int amdgpu_vram_mgr_init(struct amdgpu_device *adev); 135 void amdgpu_vram_mgr_fini(struct amdgpu_device *adev); 136 137 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem); 138 void amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr); 139 140 uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man); 141 142 u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo); 143 int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev, 144 struct ttm_resource *mem, 145 u64 offset, u64 size, 146 struct device *dev, 147 enum dma_data_direction dir, 148 struct sg_table **sgt); 149 void amdgpu_vram_mgr_free_sgt(struct device *dev, 150 enum dma_data_direction dir, 151 struct sg_table *sgt); 152 uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr); 153 int amdgpu_vram_mgr_reserve_range(struct amdgpu_vram_mgr *mgr, 154 uint64_t start, uint64_t size); 155 int amdgpu_vram_mgr_query_page_status(struct amdgpu_vram_mgr *mgr, 156 uint64_t start); 157 158 bool amdgpu_res_cpu_visible(struct amdgpu_device *adev, 159 struct ttm_resource *res); 160 161 int amdgpu_ttm_init(struct amdgpu_device *adev); 162 void amdgpu_ttm_fini(struct amdgpu_device *adev); 163 void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev, 164 bool enable); 165 int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset, 166 uint64_t dst_offset, uint32_t byte_count, 167 struct dma_resv *resv, 168 struct dma_fence **fence, bool direct_submit, 169 bool vm_needs_flush, uint32_t copy_flags); 170 int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev, 171 const struct amdgpu_copy_mem *src, 172 const struct amdgpu_copy_mem *dst, 173 uint64_t size, bool tmz, 174 struct dma_resv *resv, 175 struct dma_fence **f); 176 int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo, 177 struct dma_resv *resv, 178 struct dma_fence **fence); 179 int amdgpu_fill_buffer(struct amdgpu_bo *bo, 180 uint32_t src_data, 181 struct dma_resv *resv, 182 struct dma_fence **fence, 183 bool delayed); 184 185 int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo); 186 void amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo); 187 uint64_t amdgpu_ttm_domain_start(struct amdgpu_device *adev, uint32_t type); 188 189 #if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR) 190 int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages, 191 struct hmm_range **range); 192 void amdgpu_ttm_tt_discard_user_pages(struct ttm_tt *ttm, 193 struct hmm_range *range); 194 bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm, 195 struct hmm_range *range); 196 #else 197 static inline int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, 198 struct page **pages, 199 struct hmm_range **range) 200 { 201 return -EPERM; 202 } 203 static inline void amdgpu_ttm_tt_discard_user_pages(struct ttm_tt *ttm, 204 struct hmm_range *range) 205 { 206 } 207 static inline bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm, 208 struct hmm_range *range) 209 { 210 return false; 211 } 212 #endif 213 214 void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages); 215 int amdgpu_ttm_tt_get_userptr(const struct ttm_buffer_object *tbo, 216 uint64_t *user_addr); 217 int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo, 218 uint64_t addr, uint32_t flags); 219 bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm); 220 struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm); 221 bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start, 222 unsigned long end, unsigned long *userptr); 223 bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm, 224 int *last_invalidated); 225 bool amdgpu_ttm_tt_is_userptr(struct ttm_tt *ttm); 226 bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm); 227 uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_resource *mem); 228 uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm, 229 struct ttm_resource *mem); 230 int amdgpu_ttm_evict_resources(struct amdgpu_device *adev, int mem_type); 231 232 void amdgpu_ttm_debugfs_init(struct amdgpu_device *adev); 233 234 #endif 235