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 "amdgpu.h"
28 #include <drm/gpu_scheduler.h>
29 
30 #define AMDGPU_PL_GDS		(TTM_PL_PRIV + 0)
31 #define AMDGPU_PL_GWS		(TTM_PL_PRIV + 1)
32 #define AMDGPU_PL_OA		(TTM_PL_PRIV + 2)
33 
34 #define AMDGPU_PL_FLAG_GDS		(TTM_PL_FLAG_PRIV << 0)
35 #define AMDGPU_PL_FLAG_GWS		(TTM_PL_FLAG_PRIV << 1)
36 #define AMDGPU_PL_FLAG_OA		(TTM_PL_FLAG_PRIV << 2)
37 
38 #define AMDGPU_GTT_MAX_TRANSFER_SIZE	512
39 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS	2
40 
41 struct amdgpu_mman {
42 	struct ttm_bo_global_ref        bo_global_ref;
43 	struct drm_global_reference	mem_global_ref;
44 	struct ttm_bo_device		bdev;
45 	bool				mem_global_referenced;
46 	bool				initialized;
47 	void __iomem			*aper_base_kaddr;
48 
49 #if defined(CONFIG_DEBUG_FS)
50 	struct dentry			*debugfs_entries[8];
51 #endif
52 
53 	/* buffer handling */
54 	const struct amdgpu_buffer_funcs	*buffer_funcs;
55 	struct amdgpu_ring			*buffer_funcs_ring;
56 	bool					buffer_funcs_enabled;
57 
58 	struct mutex				gtt_window_lock;
59 	/* Scheduler entity for buffer moves */
60 	struct drm_sched_entity			entity;
61 };
62 
63 struct amdgpu_copy_mem {
64 	struct ttm_buffer_object	*bo;
65 	struct ttm_mem_reg		*mem;
66 	unsigned long			offset;
67 };
68 
69 extern const struct ttm_mem_type_manager_func amdgpu_gtt_mgr_func;
70 extern const struct ttm_mem_type_manager_func amdgpu_vram_mgr_func;
71 
72 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_mem_reg *mem);
73 uint64_t amdgpu_gtt_mgr_usage(struct ttm_mem_type_manager *man);
74 int amdgpu_gtt_mgr_recover(struct ttm_mem_type_manager *man);
75 
76 uint64_t amdgpu_vram_mgr_usage(struct ttm_mem_type_manager *man);
77 uint64_t amdgpu_vram_mgr_vis_usage(struct ttm_mem_type_manager *man);
78 
79 int amdgpu_ttm_init(struct amdgpu_device *adev);
80 void amdgpu_ttm_fini(struct amdgpu_device *adev);
81 void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
82 					bool enable);
83 
84 int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
85 		       uint64_t dst_offset, uint32_t byte_count,
86 		       struct reservation_object *resv,
87 		       struct dma_fence **fence, bool direct_submit,
88 		       bool vm_needs_flush);
89 int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
90 			       struct amdgpu_copy_mem *src,
91 			       struct amdgpu_copy_mem *dst,
92 			       uint64_t size,
93 			       struct reservation_object *resv,
94 			       struct dma_fence **f);
95 int amdgpu_fill_buffer(struct amdgpu_bo *bo,
96 			uint32_t src_data,
97 			struct reservation_object *resv,
98 			struct dma_fence **fence);
99 
100 int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma);
101 int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
102 int amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
103 
104 int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages);
105 void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages);
106 void amdgpu_ttm_tt_mark_user_pages(struct ttm_tt *ttm);
107 int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr,
108 				     uint32_t flags);
109 bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm);
110 struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm);
111 bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
112 				  unsigned long end);
113 bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
114 				       int *last_invalidated);
115 bool amdgpu_ttm_tt_userptr_needs_pages(struct ttm_tt *ttm);
116 bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm);
117 uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
118 				 struct ttm_mem_reg *mem);
119 
120 #endif
121