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#define AMDGPU_POISON 0xd0bed0be
42
43extern const struct attribute_group amdgpu_vram_mgr_attr_group;
44extern const struct attribute_group amdgpu_gtt_mgr_attr_group;
45
46struct hmm_range;
47
48struct amdgpu_gtt_mgr {
49 struct ttm_resource_manager manager;
50 struct drm_mm mm;
51 spinlock_t lock;
52};
53
54struct amdgpu_mman {
55 struct ttm_device bdev;
56 struct ttm_pool *ttm_pools;
57 bool initialized;
58 void __iomem *aper_base_kaddr;
59
60 /* buffer handling */
61 const struct amdgpu_buffer_funcs *buffer_funcs;
62 struct amdgpu_ring *buffer_funcs_ring;
63 bool buffer_funcs_enabled;
64
65 struct mutex gtt_window_lock;
66 /* High priority scheduler entity for buffer moves */
67 struct drm_sched_entity high_pr;
68 /* Low priority scheduler entity for VRAM clearing */
69 struct drm_sched_entity low_pr;
70
71 struct amdgpu_vram_mgr vram_mgr;
72 struct amdgpu_gtt_mgr gtt_mgr;
73 struct ttm_resource_manager preempt_mgr;
74
75 uint64_t stolen_vga_size;
76 struct amdgpu_bo *stolen_vga_memory;
77 uint64_t stolen_extended_size;
78 struct amdgpu_bo *stolen_extended_memory;
79 bool keep_stolen_vga_memory;
80
81 struct amdgpu_bo *stolen_reserved_memory;
82 uint64_t stolen_reserved_offset;
83 uint64_t stolen_reserved_size;
84
85 /* discovery */
86 uint8_t *discovery_bin;
87 uint32_t discovery_tmr_size;
88 /* fw reserved memory */
89 struct amdgpu_bo *fw_reserved_memory;
90
91 /* firmware VRAM reservation */
92 u64 fw_vram_usage_start_offset;
93 u64 fw_vram_usage_size;
94 struct amdgpu_bo *fw_vram_usage_reserved_bo;
95 void *fw_vram_usage_va;
96
97 /* driver VRAM reservation */
98 u64 drv_vram_usage_start_offset;
99 u64 drv_vram_usage_size;
100 struct amdgpu_bo *drv_vram_usage_reserved_bo;
101 void *drv_vram_usage_va;
102
103 /* PAGE_SIZE'd BO for process memory r/w over SDMA. */
104 struct amdgpu_bo *sdma_access_bo;
105 void *sdma_access_ptr;
106};
107
108struct amdgpu_copy_mem {
109 struct ttm_buffer_object *bo;
110 struct ttm_resource *mem;
111 unsigned long offset;
112};
113
114int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size);
115void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev);
116int amdgpu_preempt_mgr_init(struct amdgpu_device *adev);
117void amdgpu_preempt_mgr_fini(struct amdgpu_device *adev);
118int amdgpu_vram_mgr_init(struct amdgpu_device *adev);
119void amdgpu_vram_mgr_fini(struct amdgpu_device *adev);
120
121bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem);
122void amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr);
123
124uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man);
125
126u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo);
127int 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);
133void amdgpu_vram_mgr_free_sgt(struct device *dev,
134 enum dma_data_direction dir,
135 struct sg_table *sgt);
136uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr);
137int amdgpu_vram_mgr_reserve_range(struct amdgpu_vram_mgr *mgr,
138 uint64_t start, uint64_t size);
139int amdgpu_vram_mgr_query_page_status(struct amdgpu_vram_mgr *mgr,
140 uint64_t start);
141
142int amdgpu_ttm_init(struct amdgpu_device *adev);
143void amdgpu_ttm_fini(struct amdgpu_device *adev);
144void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
145 bool enable);
146
147int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
148 uint64_t dst_offset, uint32_t byte_count,
149 struct dma_resv *resv,
150 struct dma_fence **fence, bool direct_submit,
151 bool vm_needs_flush, bool tmz);
152int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
153 const struct amdgpu_copy_mem *src,
154 const struct amdgpu_copy_mem *dst,
155 uint64_t size, bool tmz,
156 struct dma_resv *resv,
157 struct dma_fence **f);
158int amdgpu_fill_buffer(struct amdgpu_bo *bo,
159 uint32_t src_data,
160 struct dma_resv *resv,
161 struct dma_fence **fence,
162 bool delayed);
163
164int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
165void amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
166uint64_t amdgpu_ttm_domain_start(struct amdgpu_device *adev, uint32_t type);
167
168#if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
169int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages,
170 struct hmm_range **range);
171void amdgpu_ttm_tt_discard_user_pages(struct ttm_tt *ttm,
172 struct hmm_range *range);
173bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm,
174 struct hmm_range *range);
175#else
176static inline int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo,
177 struct page **pages,
178 struct hmm_range **range)
179{
180 return -EPERM;
181}
182static inline void amdgpu_ttm_tt_discard_user_pages(struct ttm_tt *ttm,
183 struct hmm_range *range)
184{
185}
186static inline bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm,
187 struct hmm_range *range)
188{
189 return false;
190}
191#endif
192
193void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages);
194int amdgpu_ttm_tt_get_userptr(const struct ttm_buffer_object *tbo,
195 uint64_t *user_addr);
196int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo,
197 uint64_t addr, uint32_t flags);
198bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm);
199struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm);
200bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
201 unsigned long end, unsigned long *userptr);
202bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
203 int *last_invalidated);
204bool amdgpu_ttm_tt_is_userptr(struct ttm_tt *ttm);
205bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm);
206uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_resource *mem);
207uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
208 struct ttm_resource *mem);
209int amdgpu_ttm_evict_resources(struct amdgpu_device *adev, int mem_type);
210
211void amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
212
213#endif
214

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