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1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
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 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 */
28#ifndef __AMDGPU_OBJECT_H__
29#define __AMDGPU_OBJECT_H__
30
31#include <drm/amdgpu_drm.h>
32#include "amdgpu.h"
33#include "amdgpu_res_cursor.h"
34
35#ifdef CONFIG_MMU_NOTIFIER
36#include <linux/mmu_notifier.h>
37#endif
38
39#define AMDGPU_BO_INVALID_OFFSET LONG_MAX
40#define AMDGPU_BO_MAX_PLACEMENTS 3
41
42/* BO flag to indicate a KFD userptr BO */
43#define AMDGPU_AMDKFD_CREATE_USERPTR_BO (1ULL << 63)
44
45#define to_amdgpu_bo_user(abo) container_of((abo), struct amdgpu_bo_user, bo)
46#define to_amdgpu_bo_vm(abo) container_of((abo), struct amdgpu_bo_vm, bo)
47
48struct amdgpu_bo_param {
49 unsigned long size;
50 int byte_align;
51 u32 bo_ptr_size;
52 u32 domain;
53 u32 preferred_domain;
54 u64 flags;
55 enum ttm_bo_type type;
56 bool no_wait_gpu;
57 struct dma_resv *resv;
58 void (*destroy)(struct ttm_buffer_object *bo);
59 /* xcp partition number plus 1, 0 means any partition */
60 int8_t xcp_id_plus1;
61};
62
63/* bo virtual addresses in a vm */
64struct amdgpu_bo_va_mapping {
65 struct amdgpu_bo_va *bo_va;
66 struct list_head list;
67 struct rb_node rb;
68 uint64_t start;
69 uint64_t last;
70 uint64_t __subtree_last;
71 uint64_t offset;
72 uint32_t flags;
73};
74
75/* User space allocated BO in a VM */
76struct amdgpu_bo_va {
77 struct amdgpu_vm_bo_base base;
78
79 /* protected by bo being reserved */
80 unsigned ref_count;
81
82 /* all other members protected by the VM PD being reserved */
83 struct dma_fence *last_pt_update;
84
85 /* mappings for this bo_va */
86 struct list_head invalids;
87 struct list_head valids;
88
89 /* If the mappings are cleared or filled */
90 bool cleared;
91
92 bool is_xgmi;
93
94 /*
95 * protected by vm reservation lock
96 * if non-zero, cannot unmap from GPU because user queues may still access it
97 */
98 unsigned int queue_refcount;
99 /* Indicates if this buffer is mapped for any user queue. Once set, never reset. */
100 bool userq_va_mapped;
101};
102
103struct amdgpu_bo {
104 /* Protected by tbo.reserved */
105 u32 preferred_domains;
106 u32 allowed_domains;
107 struct ttm_place placements[AMDGPU_BO_MAX_PLACEMENTS];
108 struct ttm_placement placement;
109 struct ttm_buffer_object tbo;
110 struct ttm_bo_kmap_obj kmap;
111 u64 flags;
112 /* per VM structure for page tables and with virtual addresses */
113 struct amdgpu_vm_bo_base *vm_bo;
114 /* Constant after initialization */
115 struct amdgpu_bo *parent;
116
117#ifdef CONFIG_MMU_NOTIFIER
118 struct mmu_interval_notifier notifier;
119#endif
120 struct kgd_mem *kfd_bo;
121
122 /*
123 * For GPUs with spatial partitioning, xcp partition number, -1 means
124 * any partition. For other ASICs without spatial partition, always 0
125 * for memory accounting.
126 */
127 int8_t xcp_id;
128};
129
130struct amdgpu_bo_user {
131 struct amdgpu_bo bo;
132 u64 tiling_flags;
133 u64 metadata_flags;
134 void *metadata;
135 u32 metadata_size;
136
137};
138
139struct amdgpu_bo_vm {
140 struct amdgpu_bo bo;
141 struct amdgpu_vm_bo_base entries[];
142};
143
144static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
145{
146 return container_of(tbo, struct amdgpu_bo, tbo);
147}
148
149/**
150 * amdgpu_mem_type_to_domain - return domain corresponding to mem_type
151 * @mem_type: ttm memory type
152 *
153 * Returns corresponding domain of the ttm mem_type
154 */
155static inline unsigned amdgpu_mem_type_to_domain(u32 mem_type)
156{
157 switch (mem_type) {
158 case TTM_PL_VRAM:
159 return AMDGPU_GEM_DOMAIN_VRAM;
160 case TTM_PL_TT:
161 return AMDGPU_GEM_DOMAIN_GTT;
162 case TTM_PL_SYSTEM:
163 return AMDGPU_GEM_DOMAIN_CPU;
164 case AMDGPU_PL_GDS:
165 return AMDGPU_GEM_DOMAIN_GDS;
166 case AMDGPU_PL_GWS:
167 return AMDGPU_GEM_DOMAIN_GWS;
168 case AMDGPU_PL_OA:
169 return AMDGPU_GEM_DOMAIN_OA;
170 case AMDGPU_PL_DOORBELL:
171 return AMDGPU_GEM_DOMAIN_DOORBELL;
172 default:
173 break;
174 }
175 return 0;
176}
177
178/**
179 * amdgpu_bo_reserve - reserve bo
180 * @bo: bo structure
181 * @no_intr: don't return -ERESTARTSYS on pending signal
182 *
183 * Returns:
184 * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
185 * a signal. Release all buffer reservations and return to user-space.
186 */
187static inline int amdgpu_bo_reserve(struct amdgpu_bo *bo, bool no_intr)
188{
189 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
190 int r;
191
192 r = ttm_bo_reserve(&bo->tbo, !no_intr, false, NULL);
193 if (unlikely(r != 0)) {
194 if (r != -ERESTARTSYS)
195 dev_err(adev->dev, "%p reserve failed\n", bo);
196 return r;
197 }
198 return 0;
199}
200
201static inline void amdgpu_bo_unreserve(struct amdgpu_bo *bo)
202{
203 ttm_bo_unreserve(&bo->tbo);
204}
205
206static inline unsigned long amdgpu_bo_size(struct amdgpu_bo *bo)
207{
208 return bo->tbo.base.size;
209}
210
211static inline unsigned amdgpu_bo_ngpu_pages(struct amdgpu_bo *bo)
212{
213 return bo->tbo.base.size / AMDGPU_GPU_PAGE_SIZE;
214}
215
216static inline unsigned amdgpu_bo_gpu_page_alignment(struct amdgpu_bo *bo)
217{
218 return (bo->tbo.page_alignment << PAGE_SHIFT) / AMDGPU_GPU_PAGE_SIZE;
219}
220
221/**
222 * amdgpu_bo_mmap_offset - return mmap offset of bo
223 * @bo: amdgpu object for which we query the offset
224 *
225 * Returns mmap offset of the object.
226 */
227static inline u64 amdgpu_bo_mmap_offset(struct amdgpu_bo *bo)
228{
229 return drm_vma_node_offset_addr(&bo->tbo.base.vma_node);
230}
231
232/**
233 * amdgpu_bo_explicit_sync - return whether the bo is explicitly synced
234 */
235static inline bool amdgpu_bo_explicit_sync(struct amdgpu_bo *bo)
236{
237 return bo->flags & AMDGPU_GEM_CREATE_EXPLICIT_SYNC;
238}
239
240/**
241 * amdgpu_bo_encrypted - test if the BO is encrypted
242 * @bo: pointer to a buffer object
243 *
244 * Return true if the buffer object is encrypted, false otherwise.
245 */
246static inline bool amdgpu_bo_encrypted(struct amdgpu_bo *bo)
247{
248 return bo->flags & AMDGPU_GEM_CREATE_ENCRYPTED;
249}
250
251bool amdgpu_bo_is_amdgpu_bo(struct ttm_buffer_object *bo);
252void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain);
253
254int amdgpu_bo_create(struct amdgpu_device *adev,
255 struct amdgpu_bo_param *bp,
256 struct amdgpu_bo **bo_ptr);
257int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
258 unsigned long size, int align,
259 u32 domain, struct amdgpu_bo **bo_ptr,
260 u64 *gpu_addr, void **cpu_addr);
261int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
262 unsigned long size, int align,
263 u32 domain, struct amdgpu_bo **bo_ptr,
264 u64 *gpu_addr, void **cpu_addr);
265int amdgpu_bo_create_isp_user(struct amdgpu_device *adev,
266 struct dma_buf *dbuf, u32 domain,
267 struct amdgpu_bo **bo,
268 u64 *gpu_addr);
269int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
270 uint64_t offset, uint64_t size,
271 struct amdgpu_bo **bo_ptr, void **cpu_addr);
272int amdgpu_bo_create_user(struct amdgpu_device *adev,
273 struct amdgpu_bo_param *bp,
274 struct amdgpu_bo_user **ubo_ptr);
275int amdgpu_bo_create_vm(struct amdgpu_device *adev,
276 struct amdgpu_bo_param *bp,
277 struct amdgpu_bo_vm **ubo_ptr);
278void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
279 void **cpu_addr);
280void amdgpu_bo_free_isp_user(struct amdgpu_bo *bo);
281int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr);
282void *amdgpu_bo_kptr(struct amdgpu_bo *bo);
283void amdgpu_bo_kunmap(struct amdgpu_bo *bo);
284struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo);
285void amdgpu_bo_unref(struct amdgpu_bo **bo);
286int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain);
287void amdgpu_bo_unpin(struct amdgpu_bo *bo);
288int amdgpu_bo_init(struct amdgpu_device *adev);
289void amdgpu_bo_fini(struct amdgpu_device *adev);
290int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags);
291void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags);
292int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
293 uint32_t metadata_size, uint64_t flags);
294int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
295 size_t buffer_size, uint32_t *metadata_size,
296 uint64_t *flags);
297void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
298 bool evict,
299 struct ttm_resource *new_mem);
300void amdgpu_bo_release_notify(struct ttm_buffer_object *bo);
301vm_fault_t amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
302void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
303 bool shared);
304int amdgpu_bo_sync_wait_resv(struct amdgpu_device *adev, struct dma_resv *resv,
305 enum amdgpu_sync_mode sync_mode, void *owner,
306 bool intr);
307int amdgpu_bo_sync_wait(struct amdgpu_bo *bo, void *owner, bool intr);
308u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo);
309u64 amdgpu_bo_fb_aper_addr(struct amdgpu_bo *bo);
310u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo);
311uint32_t amdgpu_bo_mem_stats_placement(struct amdgpu_bo *bo);
312uint32_t amdgpu_bo_get_preferred_domain(struct amdgpu_device *adev,
313 uint32_t domain);
314
315bool amdgpu_bo_support_uswc(u64 bo_flags);
316
317
318#endif