1 /*
2 * Copyright 2014 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 /* amdgpu_amdkfd.h defines the private interface between amdgpu and amdkfd. */
24
25 #ifndef AMDGPU_AMDKFD_H_INCLUDED
26 #define AMDGPU_AMDKFD_H_INCLUDED
27
28 #include <linux/list.h>
29 #include <linux/types.h>
30 #include <linux/mm.h>
31 #include <linux/kthread.h>
32 #include <linux/workqueue.h>
33 #include <linux/mmu_notifier.h>
34 #include <linux/memremap.h>
35 #include <kgd_kfd_interface.h>
36 #include <drm/drm_client.h>
37 #include "amdgpu_sync.h"
38 #include "amdgpu_vm.h"
39 #include "amdgpu_xcp.h"
40
41 extern uint64_t amdgpu_amdkfd_total_mem_size;
42
43 enum TLB_FLUSH_TYPE {
44 TLB_FLUSH_LEGACY = 0,
45 TLB_FLUSH_LIGHTWEIGHT,
46 TLB_FLUSH_HEAVYWEIGHT
47 };
48
49 struct amdgpu_device;
50 struct amdgpu_reset_context;
51
52 enum kfd_mem_attachment_type {
53 KFD_MEM_ATT_SHARED, /* Share kgd_mem->bo or another attachment's */
54 KFD_MEM_ATT_USERPTR, /* SG bo to DMA map pages from a userptr bo */
55 KFD_MEM_ATT_DMABUF, /* DMAbuf to DMA map TTM BOs */
56 KFD_MEM_ATT_SG /* Tag to DMA map SG BOs */
57 };
58
59 struct kfd_mem_attachment {
60 struct list_head list;
61 enum kfd_mem_attachment_type type;
62 bool is_mapped;
63 struct amdgpu_bo_va *bo_va;
64 struct amdgpu_device *adev;
65 uint64_t va;
66 uint64_t pte_flags;
67 };
68
69 struct kgd_mem {
70 struct mutex lock;
71 struct amdgpu_bo *bo;
72 struct dma_buf *dmabuf;
73 struct hmm_range *range;
74 struct list_head attachments;
75 /* protected by amdkfd_process_info.lock */
76 struct list_head validate_list;
77 uint32_t domain;
78 unsigned int mapped_to_gpu_memory;
79 uint64_t va;
80
81 uint32_t alloc_flags;
82
83 uint32_t invalid;
84 struct amdkfd_process_info *process_info;
85
86 struct amdgpu_sync sync;
87
88 uint32_t gem_handle;
89 bool aql_queue;
90 bool is_imported;
91 };
92
93 /* KFD Memory Eviction */
94 struct amdgpu_amdkfd_fence {
95 struct dma_fence base;
96 struct mm_struct *mm;
97 spinlock_t lock;
98 char timeline_name[TASK_COMM_LEN];
99 struct svm_range_bo *svm_bo;
100 };
101
102 struct amdgpu_kfd_dev {
103 struct kfd_dev *dev;
104 int64_t vram_used[MAX_XCP];
105 uint64_t vram_used_aligned[MAX_XCP];
106 bool init_complete;
107 struct work_struct reset_work;
108
109 /* HMM page migration MEMORY_DEVICE_PRIVATE mapping */
110 struct dev_pagemap pgmap;
111
112 /* Client for KFD BO GEM handle allocations */
113 struct drm_client_dev client;
114 };
115
116 enum kgd_engine_type {
117 KGD_ENGINE_PFP = 1,
118 KGD_ENGINE_ME,
119 KGD_ENGINE_CE,
120 KGD_ENGINE_MEC1,
121 KGD_ENGINE_MEC2,
122 KGD_ENGINE_RLC,
123 KGD_ENGINE_SDMA1,
124 KGD_ENGINE_SDMA2,
125 KGD_ENGINE_MAX
126 };
127
128
129 struct amdkfd_process_info {
130 /* List head of all VMs that belong to a KFD process */
131 struct list_head vm_list_head;
132 /* List head for all KFD BOs that belong to a KFD process. */
133 struct list_head kfd_bo_list;
134 /* List of userptr BOs that are valid or invalid */
135 struct list_head userptr_valid_list;
136 struct list_head userptr_inval_list;
137 /* Lock to protect kfd_bo_list */
138 struct mutex lock;
139
140 /* Number of VMs */
141 unsigned int n_vms;
142 /* Eviction Fence */
143 struct amdgpu_amdkfd_fence *eviction_fence;
144
145 /* MMU-notifier related fields */
146 struct mutex notifier_lock;
147 uint32_t evicted_bos;
148 struct delayed_work restore_userptr_work;
149 struct pid *pid;
150 bool block_mmu_notifications;
151 };
152
153 int amdgpu_amdkfd_init(void);
154 void amdgpu_amdkfd_fini(void);
155
156 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev, bool run_pm);
157 int amdgpu_amdkfd_resume(struct amdgpu_device *adev, bool run_pm);
158 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
159 const void *ih_ring_entry);
160 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
161 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
162 void amdgpu_amdkfd_device_fini_sw(struct amdgpu_device *adev);
163 int amdgpu_amdkfd_check_and_lock_kfd(struct amdgpu_device *adev);
164 void amdgpu_amdkfd_unlock_kfd(struct amdgpu_device *adev);
165 int amdgpu_amdkfd_submit_ib(struct amdgpu_device *adev,
166 enum kgd_engine_type engine,
167 uint32_t vmid, uint64_t gpu_addr,
168 uint32_t *ib_cmd, uint32_t ib_len);
169 void amdgpu_amdkfd_set_compute_idle(struct amdgpu_device *adev, bool idle);
170 bool amdgpu_amdkfd_have_atomics_support(struct amdgpu_device *adev);
171
172 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
173
174 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev,
175 struct amdgpu_reset_context *reset_context);
176
177 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev);
178
179 void amdgpu_amdkfd_gpu_reset(struct amdgpu_device *adev);
180
181 int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
182 int queue_bit);
183
184 struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
185 struct mm_struct *mm,
186 struct svm_range_bo *svm_bo);
187
188 int amdgpu_amdkfd_drm_client_create(struct amdgpu_device *adev);
189 #if defined(CONFIG_DEBUG_FS)
190 int kfd_debugfs_kfd_mem_limits(struct seq_file *m, void *data);
191 #endif
192 #if IS_ENABLED(CONFIG_HSA_AMD)
193 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
194 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
195 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo);
196 int amdgpu_amdkfd_evict_userptr(struct mmu_interval_notifier *mni,
197 unsigned long cur_seq, struct kgd_mem *mem);
198 int amdgpu_amdkfd_bo_validate_and_fence(struct amdgpu_bo *bo,
199 uint32_t domain,
200 struct dma_fence *fence);
201 #else
202 static inline
amdkfd_fence_check_mm(struct dma_fence * f,struct mm_struct * mm)203 bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm)
204 {
205 return false;
206 }
207
208 static inline
to_amdgpu_amdkfd_fence(struct dma_fence * f)209 struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f)
210 {
211 return NULL;
212 }
213
214 static inline
amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo * bo)215 int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo)
216 {
217 return 0;
218 }
219
220 static inline
amdgpu_amdkfd_evict_userptr(struct mmu_interval_notifier * mni,unsigned long cur_seq,struct kgd_mem * mem)221 int amdgpu_amdkfd_evict_userptr(struct mmu_interval_notifier *mni,
222 unsigned long cur_seq, struct kgd_mem *mem)
223 {
224 return 0;
225 }
226 static inline
amdgpu_amdkfd_bo_validate_and_fence(struct amdgpu_bo * bo,uint32_t domain,struct dma_fence * fence)227 int amdgpu_amdkfd_bo_validate_and_fence(struct amdgpu_bo *bo,
228 uint32_t domain,
229 struct dma_fence *fence)
230 {
231 return 0;
232 }
233 #endif
234 /* Shared API */
235 int amdgpu_amdkfd_alloc_gtt_mem(struct amdgpu_device *adev, size_t size,
236 void **mem_obj, uint64_t *gpu_addr,
237 void **cpu_ptr, bool mqd_gfx9);
238 void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj);
239 int amdgpu_amdkfd_alloc_gws(struct amdgpu_device *adev, size_t size,
240 void **mem_obj);
241 void amdgpu_amdkfd_free_gws(struct amdgpu_device *adev, void *mem_obj);
242 int amdgpu_amdkfd_add_gws_to_process(void *info, void *gws, struct kgd_mem **mem);
243 int amdgpu_amdkfd_remove_gws_from_process(void *info, void *mem);
244 uint32_t amdgpu_amdkfd_get_fw_version(struct amdgpu_device *adev,
245 enum kgd_engine_type type);
246 void amdgpu_amdkfd_get_local_mem_info(struct amdgpu_device *adev,
247 struct kfd_local_mem_info *mem_info,
248 struct amdgpu_xcp *xcp);
249 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct amdgpu_device *adev);
250
251 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct amdgpu_device *adev);
252 int amdgpu_amdkfd_get_dmabuf_info(struct amdgpu_device *adev, int dma_buf_fd,
253 struct amdgpu_device **dmabuf_adev,
254 uint64_t *bo_size, void *metadata_buffer,
255 size_t buffer_size, uint32_t *metadata_size,
256 uint32_t *flags, int8_t *xcp_id);
257 uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct amdgpu_device *dst,
258 struct amdgpu_device *src);
259 int amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(struct amdgpu_device *dst,
260 struct amdgpu_device *src,
261 bool is_min);
262 int amdgpu_amdkfd_get_pcie_bandwidth_mbytes(struct amdgpu_device *adev, bool is_min);
263 int amdgpu_amdkfd_send_close_event_drain_irq(struct amdgpu_device *adev,
264 uint32_t *payload);
265 int amdgpu_amdkfd_unmap_hiq(struct amdgpu_device *adev, u32 doorbell_off,
266 u32 inst);
267 int amdgpu_amdkfd_start_sched(struct amdgpu_device *adev, uint32_t node_id);
268 int amdgpu_amdkfd_stop_sched(struct amdgpu_device *adev, uint32_t node_id);
269
270 /* Read user wptr from a specified user address space with page fault
271 * disabled. The memory must be pinned and mapped to the hardware when
272 * this is called in hqd_load functions, so it should never fault in
273 * the first place. This resolves a circular lock dependency involving
274 * four locks, including the DQM lock and mmap_lock.
275 */
276 #define read_user_wptr(mmptr, wptr, dst) \
277 ({ \
278 bool valid = false; \
279 if ((mmptr) && (wptr)) { \
280 pagefault_disable(); \
281 if ((mmptr) == current->mm) { \
282 valid = !get_user((dst), (wptr)); \
283 } else if (current->flags & PF_KTHREAD) { \
284 kthread_use_mm(mmptr); \
285 valid = !get_user((dst), (wptr)); \
286 kthread_unuse_mm(mmptr); \
287 } \
288 pagefault_enable(); \
289 } \
290 valid; \
291 })
292
293 /* GPUVM API */
294 #define drm_priv_to_vm(drm_priv) \
295 (&((struct amdgpu_fpriv *) \
296 ((struct drm_file *)(drm_priv))->driver_priv)->vm)
297
298 int amdgpu_amdkfd_gpuvm_set_vm_pasid(struct amdgpu_device *adev,
299 struct amdgpu_vm *avm, u32 pasid);
300 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct amdgpu_device *adev,
301 struct amdgpu_vm *avm,
302 void **process_info,
303 struct dma_fence **ef);
304 void amdgpu_amdkfd_gpuvm_release_process_vm(struct amdgpu_device *adev,
305 void *drm_priv);
306 uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv);
307 size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev,
308 uint8_t xcp_id);
309 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
310 struct amdgpu_device *adev, uint64_t va, uint64_t size,
311 void *drm_priv, struct kgd_mem **mem,
312 uint64_t *offset, uint32_t flags, bool criu_resume);
313 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
314 struct amdgpu_device *adev, struct kgd_mem *mem, void *drm_priv,
315 uint64_t *size);
316 int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(struct amdgpu_device *adev,
317 struct kgd_mem *mem, void *drm_priv);
318 int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
319 struct amdgpu_device *adev, struct kgd_mem *mem, void *drm_priv);
320 int amdgpu_amdkfd_gpuvm_dmaunmap_mem(struct kgd_mem *mem, void *drm_priv);
321 int amdgpu_amdkfd_gpuvm_sync_memory(
322 struct amdgpu_device *adev, struct kgd_mem *mem, bool intr);
323 int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_mem *mem,
324 void **kptr, uint64_t *size);
325 void amdgpu_amdkfd_gpuvm_unmap_gtt_bo_from_kernel(struct kgd_mem *mem);
326
327 int amdgpu_amdkfd_map_gtt_bo_to_gart(struct amdgpu_bo *bo, struct amdgpu_bo **bo_gart);
328
329 int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
330 struct dma_fence __rcu **ef);
331 int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct amdgpu_device *adev,
332 struct kfd_vm_fault_info *info);
333 int amdgpu_amdkfd_gpuvm_import_dmabuf_fd(struct amdgpu_device *adev, int fd,
334 uint64_t va, void *drm_priv,
335 struct kgd_mem **mem, uint64_t *size,
336 uint64_t *mmap_offset);
337 int amdgpu_amdkfd_gpuvm_export_dmabuf(struct kgd_mem *mem,
338 struct dma_buf **dmabuf);
339 void amdgpu_amdkfd_debug_mem_fence(struct amdgpu_device *adev);
340 int amdgpu_amdkfd_get_tile_config(struct amdgpu_device *adev,
341 struct tile_config *config);
342 void amdgpu_amdkfd_ras_poison_consumption_handler(struct amdgpu_device *adev,
343 enum amdgpu_ras_block block, uint32_t reset);
344
345 void amdgpu_amdkfd_ras_pasid_poison_consumption_handler(struct amdgpu_device *adev,
346 enum amdgpu_ras_block block, uint16_t pasid,
347 pasid_notify pasid_fn, void *data, uint32_t reset);
348
349 bool amdgpu_amdkfd_is_fed(struct amdgpu_device *adev);
350 bool amdgpu_amdkfd_bo_mapped_to_dev(void *drm_priv, struct kgd_mem *mem);
351 void amdgpu_amdkfd_block_mmu_notifications(void *p);
352 int amdgpu_amdkfd_criu_resume(void *p);
353 int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
354 uint64_t size, u32 alloc_flag, int8_t xcp_id);
355 void amdgpu_amdkfd_unreserve_mem_limit(struct amdgpu_device *adev,
356 uint64_t size, u32 alloc_flag, int8_t xcp_id);
357
358 u64 amdgpu_amdkfd_xcp_memory_size(struct amdgpu_device *adev, int xcp_id);
359
360 #define KFD_XCP_MEM_ID(adev, xcp_id) \
361 ((adev)->xcp_mgr && (xcp_id) >= 0 ?\
362 (adev)->xcp_mgr->xcp[(xcp_id)].mem_id : -1)
363
364 #define KFD_XCP_MEMORY_SIZE(adev, xcp_id) amdgpu_amdkfd_xcp_memory_size((adev), (xcp_id))
365
366
367 #if IS_ENABLED(CONFIG_HSA_AMD)
368 void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
369 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
370 struct amdgpu_vm *vm);
371
372 /**
373 * @amdgpu_amdkfd_release_notify() - Notify KFD when GEM object is released
374 *
375 * Allows KFD to release its resources associated with the GEM object.
376 */
377 void amdgpu_amdkfd_release_notify(struct amdgpu_bo *bo);
378 void amdgpu_amdkfd_reserve_system_mem(uint64_t size);
379 #else
380 static inline
amdgpu_amdkfd_gpuvm_init_mem_limits(void)381 void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
382 {
383 }
384
385 static inline
amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device * adev,struct amdgpu_vm * vm)386 void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
387 struct amdgpu_vm *vm)
388 {
389 }
390
391 static inline
amdgpu_amdkfd_release_notify(struct amdgpu_bo * bo)392 void amdgpu_amdkfd_release_notify(struct amdgpu_bo *bo)
393 {
394 }
395 #endif
396
397 #if IS_ENABLED(CONFIG_HSA_AMD_SVM)
398 int kgd2kfd_init_zone_device(struct amdgpu_device *adev);
399 #else
400 static inline
kgd2kfd_init_zone_device(struct amdgpu_device * adev)401 int kgd2kfd_init_zone_device(struct amdgpu_device *adev)
402 {
403 return 0;
404 }
405 #endif
406
407 /* KGD2KFD callbacks */
408 int kgd2kfd_quiesce_mm(struct mm_struct *mm, uint32_t trigger);
409 int kgd2kfd_resume_mm(struct mm_struct *mm);
410 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
411 struct dma_fence *fence);
412 #if IS_ENABLED(CONFIG_HSA_AMD)
413 int kgd2kfd_init(void);
414 void kgd2kfd_exit(void);
415 struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf);
416 bool kgd2kfd_device_init(struct kfd_dev *kfd,
417 const struct kgd2kfd_shared_resources *gpu_resources);
418 void kgd2kfd_device_exit(struct kfd_dev *kfd);
419 void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm);
420 int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm);
421 int kgd2kfd_pre_reset(struct kfd_dev *kfd,
422 struct amdgpu_reset_context *reset_context);
423 int kgd2kfd_post_reset(struct kfd_dev *kfd);
424 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
425 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd);
426 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint64_t throttle_bitmask);
427 int kgd2kfd_check_and_lock_kfd(void);
428 void kgd2kfd_unlock_kfd(void);
429 int kgd2kfd_start_sched(struct kfd_dev *kfd, uint32_t node_id);
430 int kgd2kfd_stop_sched(struct kfd_dev *kfd, uint32_t node_id);
431 #else
kgd2kfd_init(void)432 static inline int kgd2kfd_init(void)
433 {
434 return -ENOENT;
435 }
436
kgd2kfd_exit(void)437 static inline void kgd2kfd_exit(void)
438 {
439 }
440
441 static inline
kgd2kfd_probe(struct amdgpu_device * adev,bool vf)442 struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
443 {
444 return NULL;
445 }
446
447 static inline
kgd2kfd_device_init(struct kfd_dev * kfd,const struct kgd2kfd_shared_resources * gpu_resources)448 bool kgd2kfd_device_init(struct kfd_dev *kfd,
449 const struct kgd2kfd_shared_resources *gpu_resources)
450 {
451 return false;
452 }
453
kgd2kfd_device_exit(struct kfd_dev * kfd)454 static inline void kgd2kfd_device_exit(struct kfd_dev *kfd)
455 {
456 }
457
kgd2kfd_suspend(struct kfd_dev * kfd,bool run_pm)458 static inline void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm)
459 {
460 }
461
kgd2kfd_resume(struct kfd_dev * kfd,bool run_pm)462 static inline int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
463 {
464 return 0;
465 }
466
kgd2kfd_pre_reset(struct kfd_dev * kfd,struct amdgpu_reset_context * reset_context)467 static inline int kgd2kfd_pre_reset(struct kfd_dev *kfd,
468 struct amdgpu_reset_context *reset_context)
469 {
470 return 0;
471 }
472
kgd2kfd_post_reset(struct kfd_dev * kfd)473 static inline int kgd2kfd_post_reset(struct kfd_dev *kfd)
474 {
475 return 0;
476 }
477
478 static inline
kgd2kfd_interrupt(struct kfd_dev * kfd,const void * ih_ring_entry)479 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
480 {
481 }
482
483 static inline
kgd2kfd_set_sram_ecc_flag(struct kfd_dev * kfd)484 void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd)
485 {
486 }
487
488 static inline
kgd2kfd_smi_event_throttle(struct kfd_dev * kfd,uint64_t throttle_bitmask)489 void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint64_t throttle_bitmask)
490 {
491 }
492
kgd2kfd_check_and_lock_kfd(void)493 static inline int kgd2kfd_check_and_lock_kfd(void)
494 {
495 return 0;
496 }
497
kgd2kfd_unlock_kfd(void)498 static inline void kgd2kfd_unlock_kfd(void)
499 {
500 }
501
kgd2kfd_start_sched(struct kfd_dev * kfd,uint32_t node_id)502 static inline int kgd2kfd_start_sched(struct kfd_dev *kfd, uint32_t node_id)
503 {
504 return 0;
505 }
506
kgd2kfd_stop_sched(struct kfd_dev * kfd,uint32_t node_id)507 static inline int kgd2kfd_stop_sched(struct kfd_dev *kfd, uint32_t node_id)
508 {
509 return 0;
510 }
511 #endif
512 #endif /* AMDGPU_AMDKFD_H_INCLUDED */
513