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amdgpu_ttm.h revision 1.1.1.1 
      1 /*	$NetBSD: amdgpu_ttm.h,v 1.1.1.1 2021/12/18 20:11:12 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2016 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  */
     25 
     26 #ifndef __AMDGPU_TTM_H__
     27 #define __AMDGPU_TTM_H__
     28 
     29 #include "amdgpu.h"
     30 #include <drm/gpu_scheduler.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 
     36 #define AMDGPU_PL_FLAG_GDS		(TTM_PL_FLAG_PRIV << 0)
     37 #define AMDGPU_PL_FLAG_GWS		(TTM_PL_FLAG_PRIV << 1)
     38 #define AMDGPU_PL_FLAG_OA		(TTM_PL_FLAG_PRIV << 2)
     39 
     40 #define AMDGPU_GTT_MAX_TRANSFER_SIZE	512
     41 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS	2
     42 
     43 #define AMDGPU_POISON	0xd0bed0be
     44 
     45 struct amdgpu_mman {
     46 	struct ttm_bo_device		bdev;
     47 	bool				mem_global_referenced;
     48 	bool				initialized;
     49 	void __iomem			*aper_base_kaddr;
     50 
     51 #if defined(CONFIG_DEBUG_FS)
     52 	struct dentry			*debugfs_entries[8];
     53 #endif
     54 
     55 	/* buffer handling */
     56 	const struct amdgpu_buffer_funcs	*buffer_funcs;
     57 	struct amdgpu_ring			*buffer_funcs_ring;
     58 	bool					buffer_funcs_enabled;
     59 
     60 	struct mutex				gtt_window_lock;
     61 	/* Scheduler entity for buffer moves */
     62 	struct drm_sched_entity			entity;
     63 };
     64 
     65 struct amdgpu_copy_mem {
     66 	struct ttm_buffer_object	*bo;
     67 	struct ttm_mem_reg		*mem;
     68 	unsigned long			offset;
     69 };
     70 
     71 extern const struct ttm_mem_type_manager_func amdgpu_gtt_mgr_func;
     72 extern const struct ttm_mem_type_manager_func amdgpu_vram_mgr_func;
     73 
     74 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_mem_reg *mem);
     75 uint64_t amdgpu_gtt_mgr_usage(struct ttm_mem_type_manager *man);
     76 int amdgpu_gtt_mgr_recover(struct ttm_mem_type_manager *man);
     77 
     78 u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo);
     79 uint64_t amdgpu_vram_mgr_usage(struct ttm_mem_type_manager *man);
     80 uint64_t amdgpu_vram_mgr_vis_usage(struct ttm_mem_type_manager *man);
     81 
     82 int amdgpu_ttm_init(struct amdgpu_device *adev);
     83 void amdgpu_ttm_late_init(struct amdgpu_device *adev);
     84 void amdgpu_ttm_fini(struct amdgpu_device *adev);
     85 void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
     86 					bool enable);
     87 
     88 int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
     89 		       uint64_t dst_offset, uint32_t byte_count,
     90 		       struct dma_resv *resv,
     91 		       struct dma_fence **fence, bool direct_submit,
     92 		       bool vm_needs_flush);
     93 int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
     94 			       struct amdgpu_copy_mem *src,
     95 			       struct amdgpu_copy_mem *dst,
     96 			       uint64_t size,
     97 			       struct dma_resv *resv,
     98 			       struct dma_fence **f);
     99 int amdgpu_fill_buffer(struct amdgpu_bo *bo,
    100 			uint32_t src_data,
    101 			struct dma_resv *resv,
    102 			struct dma_fence **fence);
    103 
    104 int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma);
    105 int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
    106 int amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
    107 
    108 #if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
    109 int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages);
    110 bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm);
    111 #else
    112 static inline int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo,
    113 					       struct page **pages)
    114 {
    115 	return -EPERM;
    116 }
    117 static inline bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm)
    118 {
    119 	return false;
    120 }
    121 #endif
    122 
    123 void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages);
    124 int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr,
    125 				     uint32_t flags);
    126 bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm);
    127 struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm);
    128 bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
    129 				  unsigned long end);
    130 bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
    131 				       int *last_invalidated);
    132 bool amdgpu_ttm_tt_is_userptr(struct ttm_tt *ttm);
    133 bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm);
    134 uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_mem_reg *mem);
    135 uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
    136 				 struct ttm_mem_reg *mem);
    137 
    138 #endif
    139