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

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h