drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h

   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 "amdgpu_vram_mgr.h"
  30 #include "amdgpu.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
  38 #define AMDGPU_GTT_MAX_TRANSFER_SIZE    512
  39 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS 2
  40
  41 extern const struct attribute_group amdgpu_vram_mgr_attr_group;
  42 extern const struct attribute_group amdgpu_gtt_mgr_attr_group;
  43
  44 struct hmm_range;
  45
  46 struct amdgpu_gtt_mgr {
  47         struct ttm_resource_manager manager;
  48         struct drm_mm mm;
  49         spinlock_t lock;
  50 };
  51
  52 struct amdgpu_mman {
  53         struct ttm_device               bdev;
  54         struct ttm_pool                 *ttm_pools;
  55         bool                            initialized;
  56         void __iomem                    *aper_base_kaddr;
  57
  58         /* buffer handling */
  59         const struct amdgpu_buffer_funcs        *buffer_funcs;
  60         struct amdgpu_ring                      *buffer_funcs_ring;
  61         bool                                    buffer_funcs_enabled;
  62
  63         struct mutex                            gtt_window_lock;
  64         /* High priority scheduler entity for buffer moves */
  65         struct drm_sched_entity                 high_pr;
  66         /* Low priority scheduler entity for VRAM clearing */
  67         struct drm_sched_entity                 low_pr;
  68
  69         struct amdgpu_vram_mgr vram_mgr;
  70         struct amdgpu_gtt_mgr gtt_mgr;
  71         struct ttm_resource_manager preempt_mgr;
  72
  73         uint64_t                stolen_vga_size;
  74         struct amdgpu_bo        *stolen_vga_memory;
  75         uint64_t                stolen_extended_size;
  76         struct amdgpu_bo        *stolen_extended_memory;
  77         bool                    keep_stolen_vga_memory;
  78
  79         struct amdgpu_bo        *stolen_reserved_memory;
  80         uint64_t                stolen_reserved_offset;
  81         uint64_t                stolen_reserved_size;
  82
  83         /* discovery */
  84         uint8_t                         *discovery_bin;
  85         uint32_t                        discovery_tmr_size;
  86         /* fw reserved memory */
  87         struct amdgpu_bo                *fw_reserved_memory;
  88
  89         /* firmware VRAM reservation */
  90         u64             fw_vram_usage_start_offset;
  91         u64             fw_vram_usage_size;
  92         struct amdgpu_bo        *fw_vram_usage_reserved_bo;
  93         void            *fw_vram_usage_va;
  94
  95         /* driver VRAM reservation */
  96         u64             drv_vram_usage_start_offset;
  97         u64             drv_vram_usage_size;
  98         struct amdgpu_bo        *drv_vram_usage_reserved_bo;
  99         void            *drv_vram_usage_va;
 100
 101         /* PAGE_SIZE'd BO for process memory r/w over SDMA. */
 102         struct amdgpu_bo        *sdma_access_bo;
 103         void                    *sdma_access_ptr;
 104 };
 105
 106 struct amdgpu_copy_mem {
 107         struct ttm_buffer_object        *bo;
 108         struct ttm_resource             *mem;
 109         unsigned long                   offset;
 110 };
 111
 112 #define AMDGPU_COPY_FLAGS_TMZ           (1 << 0)
 113
 114 int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size);
 115 void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev);
 116 int amdgpu_preempt_mgr_init(struct amdgpu_device *adev);
 117 void amdgpu_preempt_mgr_fini(struct amdgpu_device *adev);
 118 int amdgpu_vram_mgr_init(struct amdgpu_device *adev);
 119 void amdgpu_vram_mgr_fini(struct amdgpu_device *adev);
 120
 121 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem);
 122 void amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr);
 123
 124 uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man);
 125
 126 u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo);
 127 int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev,
 128                               struct ttm_resource *mem,
 129                               u64 offset, u64 size,
 130                               struct device *dev,
 131                               enum dma_data_direction dir,
 132                               struct sg_table **sgt);
 133 void amdgpu_vram_mgr_free_sgt(struct device *dev,
 134                               enum dma_data_direction dir,
 135                               struct sg_table *sgt);
 136 uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr);
 137 int amdgpu_vram_mgr_reserve_range(struct amdgpu_vram_mgr *mgr,
 138                                   uint64_t start, uint64_t size);
 139 int amdgpu_vram_mgr_query_page_status(struct amdgpu_vram_mgr *mgr,
 140                                       uint64_t start);
 141
 142 bool amdgpu_res_cpu_visible(struct amdgpu_device *adev,
 143                             struct ttm_resource *res);
 144
 145 int amdgpu_ttm_init(struct amdgpu_device *adev);
 146 void amdgpu_ttm_fini(struct amdgpu_device *adev);
 147 void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
 148                                         bool enable);
 149
 150 int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
 151                        uint64_t dst_offset, uint32_t byte_count,
 152                        struct dma_resv *resv,
 153                        struct dma_fence **fence, bool direct_submit,
 154                        bool vm_needs_flush, uint32_t copy_flags);
 155 int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
 156                                const struct amdgpu_copy_mem *src,
 157                                const struct amdgpu_copy_mem *dst,
 158                                uint64_t size, bool tmz,
 159                                struct dma_resv *resv,
 160                                struct dma_fence **f);
 161 int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo,
 162                             struct dma_resv *resv,
 163                             struct dma_fence **fence);
 164 int amdgpu_fill_buffer(struct amdgpu_bo *bo,
 165                         uint32_t src_data,
 166                         struct dma_resv *resv,
 167                         struct dma_fence **fence,
 168                         bool delayed);
 169
 170 int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
 171 void amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
 172 uint64_t amdgpu_ttm_domain_start(struct amdgpu_device *adev, uint32_t type);
 173
 174 #if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
 175 int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages,
 176                                  struct hmm_range **range);
 177 void amdgpu_ttm_tt_discard_user_pages(struct ttm_tt *ttm,
 178                                       struct hmm_range *range);
 179 bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm,
 180                                        struct hmm_range *range);
 181 #else
 182 static inline int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo,
 183                                                struct page **pages,
 184                                                struct hmm_range **range)
 185 {
 186         return -EPERM;
 187 }
 188 static inline void amdgpu_ttm_tt_discard_user_pages(struct ttm_tt *ttm,
 189                                                     struct hmm_range *range)
 190 {
 191 }
 192 static inline bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm,
 193                                                      struct hmm_range *range)
 194 {
 195         return false;
 196 }
 197 #endif
 198
 199 void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages);
 200 int amdgpu_ttm_tt_get_userptr(const struct ttm_buffer_object *tbo,
 201                               uint64_t *user_addr);
 202 int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo,
 203                               uint64_t addr, uint32_t flags);
 204 bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm);
 205 struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm);
 206 bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
 207                                   unsigned long end, unsigned long *userptr);
 208 bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
 209                                        int *last_invalidated);
 210 bool amdgpu_ttm_tt_is_userptr(struct ttm_tt *ttm);
 211 bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm);
 212 uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_resource *mem);
 213 uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
 214                                  struct ttm_resource *mem);
 215 int amdgpu_ttm_evict_resources(struct amdgpu_device *adev, int mem_type);
 216
 217 void amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
 218
 219 #endif