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Merge tag 'iio-for-5.11a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23...
[linux.git] / 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
35 #define AMDGPU_GTT_MAX_TRANSFER_SIZE    512
36 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS 2
37
38 #define AMDGPU_POISON   0xd0bed0be
39
40 struct amdgpu_vram_mgr {
41         struct ttm_resource_manager manager;
42         struct drm_mm mm;
43         spinlock_t lock;
44         atomic64_t usage;
45         atomic64_t vis_usage;
46 };
47
48 struct amdgpu_gtt_mgr {
49         struct ttm_resource_manager manager;
50         struct drm_mm mm;
51         spinlock_t lock;
52         atomic64_t available;
53 };
54
55 struct amdgpu_mman {
56         struct ttm_bo_device            bdev;
57         bool                            mem_global_referenced;
58         bool                            initialized;
59         void __iomem                    *aper_base_kaddr;
60
61 #if defined(CONFIG_DEBUG_FS)
62         struct dentry                   *debugfs_entries[8];
63 #endif
64
65         /* buffer handling */
66         const struct amdgpu_buffer_funcs        *buffer_funcs;
67         struct amdgpu_ring                      *buffer_funcs_ring;
68         bool                                    buffer_funcs_enabled;
69
70         struct mutex                            gtt_window_lock;
71         /* Scheduler entity for buffer moves */
72         struct drm_sched_entity                 entity;
73
74         struct amdgpu_vram_mgr vram_mgr;
75         struct amdgpu_gtt_mgr gtt_mgr;
76
77         uint64_t                stolen_vga_size;
78         struct amdgpu_bo        *stolen_vga_memory;
79         uint64_t                stolen_extended_size;
80         struct amdgpu_bo        *stolen_extended_memory;
81         bool                    keep_stolen_vga_memory;
82
83         /* discovery */
84         uint8_t                         *discovery_bin;
85         uint32_t                        discovery_tmr_size;
86         struct amdgpu_bo                *discovery_memory;
87
88         /* firmware VRAM reservation */
89         u64             fw_vram_usage_start_offset;
90         u64             fw_vram_usage_size;
91         struct amdgpu_bo        *fw_vram_usage_reserved_bo;
92         void            *fw_vram_usage_va;
93 };
94
95 struct amdgpu_copy_mem {
96         struct ttm_buffer_object        *bo;
97         struct ttm_resource             *mem;
98         unsigned long                   offset;
99 };
100
101 int amdgpu_gtt_mgr_init(struct amdgpu_device *adev, uint64_t gtt_size);
102 void amdgpu_gtt_mgr_fini(struct amdgpu_device *adev);
103 int amdgpu_vram_mgr_init(struct amdgpu_device *adev);
104 void amdgpu_vram_mgr_fini(struct amdgpu_device *adev);
105
106 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem);
107 uint64_t amdgpu_gtt_mgr_usage(struct ttm_resource_manager *man);
108 int amdgpu_gtt_mgr_recover(struct ttm_resource_manager *man);
109
110 u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo);
111 int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev,
112                               struct ttm_resource *mem,
113                               struct device *dev,
114                               enum dma_data_direction dir,
115                               struct sg_table **sgt);
116 void amdgpu_vram_mgr_free_sgt(struct amdgpu_device *adev,
117                               struct device *dev,
118                               enum dma_data_direction dir,
119                               struct sg_table *sgt);
120 uint64_t amdgpu_vram_mgr_usage(struct ttm_resource_manager *man);
121 uint64_t amdgpu_vram_mgr_vis_usage(struct ttm_resource_manager *man);
122
123 int amdgpu_ttm_init(struct amdgpu_device *adev);
124 void amdgpu_ttm_late_init(struct amdgpu_device *adev);
125 void amdgpu_ttm_fini(struct amdgpu_device *adev);
126 void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev,
127                                         bool enable);
128
129 int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset,
130                        uint64_t dst_offset, uint32_t byte_count,
131                        struct dma_resv *resv,
132                        struct dma_fence **fence, bool direct_submit,
133                        bool vm_needs_flush, bool tmz);
134 int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
135                                const struct amdgpu_copy_mem *src,
136                                const struct amdgpu_copy_mem *dst,
137                                uint64_t size, bool tmz,
138                                struct dma_resv *resv,
139                                struct dma_fence **f);
140 int amdgpu_fill_buffer(struct amdgpu_bo *bo,
141                         uint32_t src_data,
142                         struct dma_resv *resv,
143                         struct dma_fence **fence);
144
145 int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma);
146 int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
147 int amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
148 uint64_t amdgpu_ttm_domain_start(struct amdgpu_device *adev, uint32_t type);
149
150 #if IS_ENABLED(CONFIG_DRM_AMDGPU_USERPTR)
151 int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages);
152 bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm);
153 #else
154 static inline int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo,
155                                                struct page **pages)
156 {
157         return -EPERM;
158 }
159 static inline bool amdgpu_ttm_tt_get_user_pages_done(struct ttm_tt *ttm)
160 {
161         return false;
162 }
163 #endif
164
165 void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages);
166 int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo,
167                               uint64_t addr, uint32_t flags);
168 bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm);
169 struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm);
170 bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,
171                                   unsigned long end);
172 bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm,
173                                        int *last_invalidated);
174 bool amdgpu_ttm_tt_is_userptr(struct ttm_tt *ttm);
175 bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm);
176 uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_resource *mem);
177 uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
178                                  struct ttm_resource *mem);
179
180 int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
181
182 #endif
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