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.h"
  30
  31 #define AMDGPU_PL_GDS           (TTM_PL_PRIV + 0)
  32 #define AMDGPU_PL_GWS           (TTM_PL_PRIV + 1)
  33 #define AMDGPU_PL_OA            (TTM_PL_PRIV + 2)
  34 #define AMDGPU_PL_PREEMPT       (TTM_PL_PRIV + 3)
  35
  36 #define AMDGPU_GTT_MAX_TRANSFER_SIZE    512
  37 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS 2
  38
  39 #define AMDGPU_POISON   0xd0bed0be
  40
  41 struct amdgpu_vram_mgr {
  42         struct ttm_resource_manager manager;
  43         struct drm_mm mm;
  44         spinlock_t lock;
  45         struct list_head reservations_pending;
  46         struct list_head reserved_pages;
  47         atomic64_t usage;
  48         atomic64_t vis_usage;
  49 };
  50
  51 struct amdgpu_gtt_mgr {
  52         struct ttm_resource_manager manager;
  53         struct drm_mm mm;
  54         spinlock_t lock;
  55 };
  56
  57 struct amdgpu_preempt_mgr {
  58         struct ttm_resource_manager manager;
  59         atomic64_t used;
  60 };
  61
  62 struct amdgpu_mman {
  63         struct ttm_device               bdev;
  64         bool                            initialized;
  65         void __iomem                    *aper_base_kaddr;
  66
  67         /* buffer handling */
  68         const struct amdgpu_buffer_funcs        *buffer_funcs;
  69         struct amdgpu_ring                      *buffer_funcs_ring;
  70         bool                                    buffer_funcs_enabled;
  71
  72         struct mutex                            gtt_window_lock;
  73         /* Scheduler entity for buffer moves */
  74         struct drm_sched_entity                 entity;
  75
  76         struct amdgpu_vram_mgr vram_mgr;
  77         struct amdgpu_gtt_mgr gtt_mgr;
  78         struct amdgpu_preempt_mgr preempt_mgr;
  79
  80         uint64_t                stolen_vga_size;
  81         struct amdgpu_bo        *stolen_vga_memory;
  82         uint64_t                stolen_extended_size;
  83         struct amdgpu_bo        *stolen_extended_memory;
  84         bool                    keep_stolen_vga_memory;
  85
  86         struct amdgpu_bo        *stolen_reserved_memory;
  87         uint64_t                stolen_reserved_offset;
  88         uint64_t                stolen_reserved_size;
  89
  90         /* discovery */
  91         uint8_t                         *discovery_bin;
  92         uint32_t                        discovery_tmr_size;
  93         struct amdgpu_bo                *discovery_memory;
  94
  95         /* firmware VRAM reservation */
  96         u64             fw_vram_usage_start_offset;
  97         u64             fw_vram_usage_size;
  98         struct amdgpu_bo        *fw_vram_usage_reserved_bo;
  99         void            *fw_vram_usage_va;
 100 };
 101
 102 struct amdgpu_copy_mem {
 103         struct ttm_buffer_object        *bo;
 104         struct ttm_resource             *mem;
 105         unsigned long                   offset;
 106 };
 107
 108 int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size);
 109 void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev);
 110 int amdgpu_preempt_mgr_init(struct amdgpu_device *adev);
 111 void amdgpu_preempt_mgr_fini(struct amdgpu_device *adev);
 112 int amdgpu_vram_mgr_init(struct amdgpu_device *adev);
 113 void amdgpu_vram_mgr_fini(struct amdgpu_device *adev);
 114
 115 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem);
 116 int amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr);
 117
 118 uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man);
 119
 120 u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo);
 121 int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev,
 122                               struct ttm_resource *mem,
 123                               u64 offset, u64 size,
 124                               struct device *dev,
 125                               enum dma_data_direction dir,
 126                               struct sg_table **sgt);
 127 void amdgpu_vram_mgr_free_sgt(struct device *dev,
 128                               enum dma_data_direction dir,
 129                               struct sg_table *sgt);
 130 uint64_t amdgpu_vram_mgr_usage(struct amdgpu_vram_mgr *mgr);
 131 uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr);
 132 int amdgpu_vram_mgr_reserve_range(struct amdgpu_vram_mgr *mgr,
 133                                   uint64_t start, uint64_t size);
 134 int amdgpu_vram_mgr_query_page_status(struct amdgpu_vram_mgr *mgr,
 135                                       uint64_t start);
 136
 137 int amdgpu_ttm_init(struct amdgpu_device *adev);
 138 void amdgpu_ttm_fini(struct amdgpu_device *adev);
 139 void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
 140                                         bool enable);
 141
 142 int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
 143                        uint64_t dst_offset, uint32_t byte_count,
 144                        struct dma_resv *resv,
 145                        struct dma_fence **fence, bool direct_submit,
 146                        bool vm_needs_flush, bool tmz);
 147 int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
 148                                const struct amdgpu_copy_mem *src,
 149                                const struct amdgpu_copy_mem *dst,
 150                                uint64_t size, bool tmz,
 151                                struct dma_resv *resv,
 152                                struct dma_fence **f);
 153 int amdgpu_fill_buffer(struct amdgpu_bo *bo,
 154                         uint32_t src_data,
 155                         struct dma_resv *resv,
 156                         struct dma_fence **fence);
 157
 158 int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
 159 int amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
 160 uint64_t amdgpu_ttm_domain_start(struct amdgpu_device *adev, uint32_t type);
 161
 162 #if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
 163 int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages);
 164 bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm);
 165 #else
 166 static inline int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo,
 167                                                struct page **pages)
 168 {
 169         return -EPERM;
 170 }
 171 static inline bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm)
 172 {
 173         return false;
 174 }
 175 #endif
 176
 177 void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages);
 178 int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo,
 179                               uint64_t addr, uint32_t flags);
 180 bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm);
 181 struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm);
 182 bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
 183                                   unsigned long end, unsigned long *userptr);
 184 bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
 185                                        int *last_invalidated);
 186 bool amdgpu_ttm_tt_is_userptr(struct ttm_tt *ttm);
 187 bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm);
 188 uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_resource *mem);
 189 uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
 190                                  struct ttm_resource *mem);
 191 int amdgpu_ttm_evict_resources(struct amdgpu_device *adev, int mem_type);
 192
 193 void amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
 194
 195 #endif