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 #define AMDGPU_AMDKFD_CREATE_SVM_BO	(1ULL << 62)
45 
46 #define to_amdgpu_bo_user(abo) container_of((abo), struct amdgpu_bo_user, bo)
47 #define to_amdgpu_bo_vm(abo) container_of((abo), struct amdgpu_bo_vm, bo)
48 
49 struct amdgpu_bo_param {
50 	unsigned long			size;
51 	int				byte_align;
52 	u32				bo_ptr_size;
53 	u32				domain;
54 	u32				preferred_domain;
55 	u64				flags;
56 	enum ttm_bo_type		type;
57 	bool				no_wait_gpu;
58 	struct dma_resv			*resv;
59 	void				(*destroy)(struct ttm_buffer_object *bo);
60 };
61 
62 /* bo virtual addresses in a vm */
63 struct amdgpu_bo_va_mapping {
64 	struct amdgpu_bo_va		*bo_va;
65 	struct list_head		list;
66 	struct rb_node			rb;
67 	uint64_t			start;
68 	uint64_t			last;
69 	uint64_t			__subtree_last;
70 	uint64_t			offset;
71 	uint64_t			flags;
72 };
73 
74 /* User space allocated BO in a VM */
75 struct amdgpu_bo_va {
76 	struct amdgpu_vm_bo_base	base;
77 
78 	/* protected by bo being reserved */
79 	unsigned			ref_count;
80 
81 	/* all other members protected by the VM PD being reserved */
82 	struct dma_fence	        *last_pt_update;
83 
84 	/* mappings for this bo_va */
85 	struct list_head		invalids;
86 	struct list_head		valids;
87 
88 	/* If the mappings are cleared or filled */
89 	bool				cleared;
90 
91 	bool				is_xgmi;
92 };
93 
94 struct amdgpu_bo {
95 	/* Protected by tbo.reserved */
96 	u32				preferred_domains;
97 	u32				allowed_domains;
98 	struct ttm_place		placements[AMDGPU_BO_MAX_PLACEMENTS];
99 	struct ttm_placement		placement;
100 	struct ttm_buffer_object	tbo;
101 	struct ttm_bo_kmap_obj		kmap;
102 	u64				flags;
103 	/* per VM structure for page tables and with virtual addresses */
104 	struct amdgpu_vm_bo_base	*vm_bo;
105 	/* Constant after initialization */
106 	struct amdgpu_bo		*parent;
107 
108 #ifdef CONFIG_MMU_NOTIFIER
109 	struct mmu_interval_notifier	notifier;
110 #endif
111 	struct kgd_mem                  *kfd_bo;
112 };
113 
114 struct amdgpu_bo_user {
115 	struct amdgpu_bo		bo;
116 	u64				tiling_flags;
117 	u64				metadata_flags;
118 	void				*metadata;
119 	u32				metadata_size;
120 
121 };
122 
123 struct amdgpu_bo_vm {
124 	struct amdgpu_bo		bo;
125 	struct amdgpu_bo		*shadow;
126 	struct list_head		shadow_list;
127 	struct amdgpu_vm_bo_base        entries[];
128 };
129 
130 static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
131 {
132 	return container_of(tbo, struct amdgpu_bo, tbo);
133 }
134 
135 /**
136  * amdgpu_mem_type_to_domain - return domain corresponding to mem_type
137  * @mem_type:	ttm memory type
138  *
139  * Returns corresponding domain of the ttm mem_type
140  */
141 static inline unsigned amdgpu_mem_type_to_domain(u32 mem_type)
142 {
143 	switch (mem_type) {
144 	case TTM_PL_VRAM:
145 		return AMDGPU_GEM_DOMAIN_VRAM;
146 	case TTM_PL_TT:
147 		return AMDGPU_GEM_DOMAIN_GTT;
148 	case TTM_PL_SYSTEM:
149 		return AMDGPU_GEM_DOMAIN_CPU;
150 	case AMDGPU_PL_GDS:
151 		return AMDGPU_GEM_DOMAIN_GDS;
152 	case AMDGPU_PL_GWS:
153 		return AMDGPU_GEM_DOMAIN_GWS;
154 	case AMDGPU_PL_OA:
155 		return AMDGPU_GEM_DOMAIN_OA;
156 	default:
157 		break;
158 	}
159 	return 0;
160 }
161 
162 /**
163  * amdgpu_bo_reserve - reserve bo
164  * @bo:		bo structure
165  * @no_intr:	don't return -ERESTARTSYS on pending signal
166  *
167  * Returns:
168  * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
169  * a signal. Release all buffer reservations and return to user-space.
170  */
171 static inline int amdgpu_bo_reserve(struct amdgpu_bo *bo, bool no_intr)
172 {
173 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
174 	int r;
175 
176 	r = ttm_bo_reserve(&bo->tbo, !no_intr, false, NULL);
177 	if (unlikely(r != 0)) {
178 		if (r != -ERESTARTSYS)
179 			dev_err(adev->dev, "%p reserve failed\n", bo);
180 		return r;
181 	}
182 	return 0;
183 }
184 
185 static inline void amdgpu_bo_unreserve(struct amdgpu_bo *bo)
186 {
187 	ttm_bo_unreserve(&bo->tbo);
188 }
189 
190 static inline unsigned long amdgpu_bo_size(struct amdgpu_bo *bo)
191 {
192 	return bo->tbo.base.size;
193 }
194 
195 static inline unsigned amdgpu_bo_ngpu_pages(struct amdgpu_bo *bo)
196 {
197 	return bo->tbo.base.size / AMDGPU_GPU_PAGE_SIZE;
198 }
199 
200 static inline unsigned amdgpu_bo_gpu_page_alignment(struct amdgpu_bo *bo)
201 {
202 	return (bo->tbo.page_alignment << PAGE_SHIFT) / AMDGPU_GPU_PAGE_SIZE;
203 }
204 
205 /**
206  * amdgpu_bo_mmap_offset - return mmap offset of bo
207  * @bo:	amdgpu object for which we query the offset
208  *
209  * Returns mmap offset of the object.
210  */
211 static inline u64 amdgpu_bo_mmap_offset(struct amdgpu_bo *bo)
212 {
213 	return drm_vma_node_offset_addr(&bo->tbo.base.vma_node);
214 }
215 
216 /**
217  * amdgpu_bo_in_cpu_visible_vram - check if BO is (partly) in visible VRAM
218  */
219 static inline bool amdgpu_bo_in_cpu_visible_vram(struct amdgpu_bo *bo)
220 {
221 	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
222 	struct amdgpu_res_cursor cursor;
223 
224 	if (bo->tbo.resource->mem_type != TTM_PL_VRAM)
225 		return false;
226 
227 	amdgpu_res_first(bo->tbo.resource, 0, amdgpu_bo_size(bo), &cursor);
228 	while (cursor.remaining) {
229 		if (cursor.start < adev->gmc.visible_vram_size)
230 			return true;
231 
232 		amdgpu_res_next(&cursor, cursor.size);
233 	}
234 
235 	return false;
236 }
237 
238 /**
239  * amdgpu_bo_explicit_sync - return whether the bo is explicitly synced
240  */
241 static inline bool amdgpu_bo_explicit_sync(struct amdgpu_bo *bo)
242 {
243 	return bo->flags & AMDGPU_GEM_CREATE_EXPLICIT_SYNC;
244 }
245 
246 /**
247  * amdgpu_bo_encrypted - test if the BO is encrypted
248  * @bo: pointer to a buffer object
249  *
250  * Return true if the buffer object is encrypted, false otherwise.
251  */
252 static inline bool amdgpu_bo_encrypted(struct amdgpu_bo *bo)
253 {
254 	return bo->flags & AMDGPU_GEM_CREATE_ENCRYPTED;
255 }
256 
257 /**
258  * amdgpu_bo_shadowed - check if the BO is shadowed
259  *
260  * @bo: BO to be tested.
261  *
262  * Returns:
263  * NULL if not shadowed or else return a BO pointer.
264  */
265 static inline struct amdgpu_bo *amdgpu_bo_shadowed(struct amdgpu_bo *bo)
266 {
267 	if (bo->tbo.type == ttm_bo_type_kernel)
268 		return to_amdgpu_bo_vm(bo)->shadow;
269 
270 	return NULL;
271 }
272 
273 bool amdgpu_bo_is_amdgpu_bo(struct ttm_buffer_object *bo);
274 void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain);
275 
276 int amdgpu_bo_create(struct amdgpu_device *adev,
277 		     struct amdgpu_bo_param *bp,
278 		     struct amdgpu_bo **bo_ptr);
279 int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
280 			      unsigned long size, int align,
281 			      u32 domain, struct amdgpu_bo **bo_ptr,
282 			      u64 *gpu_addr, void **cpu_addr);
283 int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
284 			    unsigned long size, int align,
285 			    u32 domain, struct amdgpu_bo **bo_ptr,
286 			    u64 *gpu_addr, void **cpu_addr);
287 int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
288 			       uint64_t offset, uint64_t size, uint32_t domain,
289 			       struct amdgpu_bo **bo_ptr, void **cpu_addr);
290 int amdgpu_bo_create_user(struct amdgpu_device *adev,
291 			  struct amdgpu_bo_param *bp,
292 			  struct amdgpu_bo_user **ubo_ptr);
293 int amdgpu_bo_create_vm(struct amdgpu_device *adev,
294 			struct amdgpu_bo_param *bp,
295 			struct amdgpu_bo_vm **ubo_ptr);
296 void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
297 			   void **cpu_addr);
298 int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr);
299 void *amdgpu_bo_kptr(struct amdgpu_bo *bo);
300 void amdgpu_bo_kunmap(struct amdgpu_bo *bo);
301 struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo);
302 void amdgpu_bo_unref(struct amdgpu_bo **bo);
303 int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain);
304 int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
305 			     u64 min_offset, u64 max_offset);
306 void amdgpu_bo_unpin(struct amdgpu_bo *bo);
307 int amdgpu_bo_evict_vram(struct amdgpu_device *adev);
308 int amdgpu_bo_init(struct amdgpu_device *adev);
309 void amdgpu_bo_fini(struct amdgpu_device *adev);
310 int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags);
311 void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags);
312 int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
313 			    uint32_t metadata_size, uint64_t flags);
314 int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
315 			   size_t buffer_size, uint32_t *metadata_size,
316 			   uint64_t *flags);
317 void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
318 			   bool evict,
319 			   struct ttm_resource *new_mem);
320 void amdgpu_bo_release_notify(struct ttm_buffer_object *bo);
321 vm_fault_t amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
322 void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
323 		     bool shared);
324 int amdgpu_bo_sync_wait_resv(struct amdgpu_device *adev, struct dma_resv *resv,
325 			     enum amdgpu_sync_mode sync_mode, void *owner,
326 			     bool intr);
327 int amdgpu_bo_sync_wait(struct amdgpu_bo *bo, void *owner, bool intr);
328 u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo);
329 u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo);
330 void amdgpu_bo_get_memory(struct amdgpu_bo *bo, uint64_t *vram_mem,
331 				uint64_t *gtt_mem, uint64_t *cpu_mem);
332 void amdgpu_bo_add_to_shadow_list(struct amdgpu_bo_vm *vmbo);
333 int amdgpu_bo_restore_shadow(struct amdgpu_bo *shadow,
334 			     struct dma_fence **fence);
335 uint32_t amdgpu_bo_get_preferred_domain(struct amdgpu_device *adev,
336 					    uint32_t domain);
337 
338 /*
339  * sub allocation
340  */
341 
342 static inline uint64_t amdgpu_sa_bo_gpu_addr(struct amdgpu_sa_bo *sa_bo)
343 {
344 	return sa_bo->manager->gpu_addr + sa_bo->soffset;
345 }
346 
347 static inline void * amdgpu_sa_bo_cpu_addr(struct amdgpu_sa_bo *sa_bo)
348 {
349 	return sa_bo->manager->cpu_ptr + sa_bo->soffset;
350 }
351 
352 int amdgpu_sa_bo_manager_init(struct amdgpu_device *adev,
353 				     struct amdgpu_sa_manager *sa_manager,
354 				     unsigned size, u32 align, u32 domain);
355 void amdgpu_sa_bo_manager_fini(struct amdgpu_device *adev,
356 				      struct amdgpu_sa_manager *sa_manager);
357 int amdgpu_sa_bo_manager_start(struct amdgpu_device *adev,
358 				      struct amdgpu_sa_manager *sa_manager);
359 int amdgpu_sa_bo_new(struct amdgpu_sa_manager *sa_manager,
360 		     struct amdgpu_sa_bo **sa_bo,
361 		     unsigned size, unsigned align);
362 void amdgpu_sa_bo_free(struct amdgpu_device *adev,
363 			      struct amdgpu_sa_bo **sa_bo,
364 			      struct dma_fence *fence);
365 #if defined(CONFIG_DEBUG_FS)
366 void amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager *sa_manager,
367 					 struct seq_file *m);
368 u64 amdgpu_bo_print_info(int id, struct amdgpu_bo *bo, struct seq_file *m);
369 #endif
370 void amdgpu_debugfs_sa_init(struct amdgpu_device *adev);
371 
372 bool amdgpu_bo_support_uswc(u64 bo_flags);
373 
374 
375 #endif
376