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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/types.h>
29#include <linux/mm.h>
30#include <linux/kthread.h>
31#include <linux/workqueue.h>
32#include <kgd_kfd_interface.h>
33#include <drm/ttm/ttm_execbuf_util.h>
34#include "amdgpu_sync.h"
35#include "amdgpu_vm.h"
36
37extern uint64_t amdgpu_amdkfd_total_mem_size;
38
39struct amdgpu_device;
40
41struct kfd_bo_va_list {
42 struct list_head bo_list;
43 struct amdgpu_bo_va *bo_va;
44 void *kgd_dev;
45 bool is_mapped;
46 uint64_t va;
47 uint64_t pte_flags;
48};
49
50struct kgd_mem {
51 struct mutex lock;
52 struct amdgpu_bo *bo;
53 struct list_head bo_va_list;
54 /* protected by amdkfd_process_info.lock */
55 struct ttm_validate_buffer validate_list;
56 struct ttm_validate_buffer resv_list;
57 uint32_t domain;
58 unsigned int mapped_to_gpu_memory;
59 uint64_t va;
60
61 uint32_t alloc_flags;
62
63 atomic_t invalid;
64 struct amdkfd_process_info *process_info;
65
66 struct amdgpu_sync sync;
67
68 bool aql_queue;
69 bool is_imported;
70};
71
72/* KFD Memory Eviction */
73struct amdgpu_amdkfd_fence {
74 struct dma_fence base;
75 struct mm_struct *mm;
76 spinlock_t lock;
77 char timeline_name[TASK_COMM_LEN];
78};
79
80struct amdgpu_kfd_dev {
81 struct kfd_dev *dev;
82 uint64_t vram_used;
83};
84
85enum kgd_engine_type {
86 KGD_ENGINE_PFP = 1,
87 KGD_ENGINE_ME,
88 KGD_ENGINE_CE,
89 KGD_ENGINE_MEC1,
90 KGD_ENGINE_MEC2,
91 KGD_ENGINE_RLC,
92 KGD_ENGINE_SDMA1,
93 KGD_ENGINE_SDMA2,
94 KGD_ENGINE_MAX
95};
96
97struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
98 struct mm_struct *mm);
99bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
100struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
101int amdgpu_amdkfd_remove_fence_on_pt_pd_bos(struct amdgpu_bo *bo);
102
103struct amdkfd_process_info {
104 /* List head of all VMs that belong to a KFD process */
105 struct list_head vm_list_head;
106 /* List head for all KFD BOs that belong to a KFD process. */
107 struct list_head kfd_bo_list;
108 /* List of userptr BOs that are valid or invalid */
109 struct list_head userptr_valid_list;
110 struct list_head userptr_inval_list;
111 /* Lock to protect kfd_bo_list */
112 struct mutex lock;
113
114 /* Number of VMs */
115 unsigned int n_vms;
116 /* Eviction Fence */
117 struct amdgpu_amdkfd_fence *eviction_fence;
118
119 /* MMU-notifier related fields */
120 atomic_t evicted_bos;
121 struct delayed_work restore_userptr_work;
122 struct pid *pid;
123};
124
125int amdgpu_amdkfd_init(void);
126void amdgpu_amdkfd_fini(void);
127
128void amdgpu_amdkfd_suspend(struct amdgpu_device *adev, bool run_pm);
129int amdgpu_amdkfd_resume(struct amdgpu_device *adev, bool run_pm);
130void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
131 const void *ih_ring_entry);
132void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
133void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
134void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
135
136int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm);
137int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
138 uint32_t vmid, uint64_t gpu_addr,
139 uint32_t *ib_cmd, uint32_t ib_len);
140void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle);
141bool amdgpu_amdkfd_have_atomics_support(struct kgd_dev *kgd);
142int amdgpu_amdkfd_flush_gpu_tlb_vmid(struct kgd_dev *kgd, uint16_t vmid);
143int amdgpu_amdkfd_flush_gpu_tlb_pasid(struct kgd_dev *kgd, uint16_t pasid);
144
145bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
146
147int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev);
148
149int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev);
150
151void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd);
152
153int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
154 int queue_bit);
155
156/* Shared API */
157int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
158 void **mem_obj, uint64_t *gpu_addr,
159 void **cpu_ptr, bool mqd_gfx9);
160void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
161int amdgpu_amdkfd_alloc_gws(struct kgd_dev *kgd, size_t size, void **mem_obj);
162void amdgpu_amdkfd_free_gws(struct kgd_dev *kgd, void *mem_obj);
163int amdgpu_amdkfd_add_gws_to_process(void *info, void *gws, struct kgd_mem **mem);
164int amdgpu_amdkfd_remove_gws_from_process(void *info, void *mem);
165uint32_t amdgpu_amdkfd_get_fw_version(struct kgd_dev *kgd,
166 enum kgd_engine_type type);
167void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd,
168 struct kfd_local_mem_info *mem_info);
169uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd);
170
171uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
172void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
173int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
174 struct kgd_dev **dmabuf_kgd,
175 uint64_t *bo_size, void *metadata_buffer,
176 size_t buffer_size, uint32_t *metadata_size,
177 uint32_t *flags);
178uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
179uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd);
180uint64_t amdgpu_amdkfd_get_unique_id(struct kgd_dev *kgd);
181uint64_t amdgpu_amdkfd_get_mmio_remap_phys_addr(struct kgd_dev *kgd);
182uint32_t amdgpu_amdkfd_get_num_gws(struct kgd_dev *kgd);
183uint32_t amdgpu_amdkfd_get_asic_rev_id(struct kgd_dev *kgd);
184uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *src);
185
186/* Read user wptr from a specified user address space with page fault
187 * disabled. The memory must be pinned and mapped to the hardware when
188 * this is called in hqd_load functions, so it should never fault in
189 * the first place. This resolves a circular lock dependency involving
190 * four locks, including the DQM lock and mmap_lock.
191 */
192#define read_user_wptr(mmptr, wptr, dst) \
193 ({ \
194 bool valid = false; \
195 if ((mmptr) && (wptr)) { \
196 pagefault_disable(); \
197 if ((mmptr) == current->mm) { \
198 valid = !get_user((dst), (wptr)); \
199 } else if (current->flags & PF_KTHREAD) { \
200 kthread_use_mm(mmptr); \
201 valid = !get_user((dst), (wptr)); \
202 kthread_unuse_mm(mmptr); \
203 } \
204 pagefault_enable(); \
205 } \
206 valid; \
207 })
208
209/* GPUVM API */
210int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, unsigned int pasid,
211 void **vm, void **process_info,
212 struct dma_fence **ef);
213int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
214 struct file *filp, unsigned int pasid,
215 void **vm, void **process_info,
216 struct dma_fence **ef);
217void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
218 struct amdgpu_vm *vm);
219void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm);
220void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm);
221uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
222int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
223 struct kgd_dev *kgd, uint64_t va, uint64_t size,
224 void *vm, struct kgd_mem **mem,
225 uint64_t *offset, uint32_t flags);
226int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
227 struct kgd_dev *kgd, struct kgd_mem *mem, uint64_t *size);
228int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
229 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
230int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
231 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
232int amdgpu_amdkfd_gpuvm_sync_memory(
233 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
234int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
235 struct kgd_mem *mem, void **kptr, uint64_t *size);
236int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
237 struct dma_fence **ef);
238
239int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
240 struct kfd_vm_fault_info *info);
241
242int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
243 struct dma_buf *dmabuf,
244 uint64_t va, void *vm,
245 struct kgd_mem **mem, uint64_t *size,
246 uint64_t *mmap_offset);
247
248void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
249void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
250
251int amdgpu_amdkfd_get_tile_config(struct kgd_dev *kgd,
252 struct tile_config *config);
253
254/* KGD2KFD callbacks */
255int kgd2kfd_init(void);
256void kgd2kfd_exit(void);
257struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
258 unsigned int asic_type, bool vf);
259bool kgd2kfd_device_init(struct kfd_dev *kfd,
260 struct drm_device *ddev,
261 const struct kgd2kfd_shared_resources *gpu_resources);
262void kgd2kfd_device_exit(struct kfd_dev *kfd);
263void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm);
264int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm);
265int kgd2kfd_pre_reset(struct kfd_dev *kfd);
266int kgd2kfd_post_reset(struct kfd_dev *kfd);
267void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry);
268int kgd2kfd_quiesce_mm(struct mm_struct *mm);
269int kgd2kfd_resume_mm(struct mm_struct *mm);
270int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
271 struct dma_fence *fence);
272void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd);
273
274#endif /* AMDGPU_AMDKFD_H_INCLUDED */
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/types.h>
29#include <linux/mm.h>
30#include <linux/mmu_context.h>
31#include <kgd_kfd_interface.h>
32#include <drm/ttm/ttm_execbuf_util.h>
33#include "amdgpu_sync.h"
34#include "amdgpu_vm.h"
35
36extern const struct kgd2kfd_calls *kgd2kfd;
37
38struct amdgpu_device;
39
40struct kfd_bo_va_list {
41 struct list_head bo_list;
42 struct amdgpu_bo_va *bo_va;
43 void *kgd_dev;
44 bool is_mapped;
45 uint64_t va;
46 uint64_t pte_flags;
47};
48
49struct kgd_mem {
50 struct mutex lock;
51 struct amdgpu_bo *bo;
52 struct list_head bo_va_list;
53 /* protected by amdkfd_process_info.lock */
54 struct ttm_validate_buffer validate_list;
55 struct ttm_validate_buffer resv_list;
56 uint32_t domain;
57 unsigned int mapped_to_gpu_memory;
58 uint64_t va;
59
60 uint32_t mapping_flags;
61
62 struct amdkfd_process_info *process_info;
63
64 struct amdgpu_sync sync;
65
66 bool aql_queue;
67};
68
69/* KFD Memory Eviction */
70struct amdgpu_amdkfd_fence {
71 struct dma_fence base;
72 struct mm_struct *mm;
73 spinlock_t lock;
74 char timeline_name[TASK_COMM_LEN];
75};
76
77struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
78 struct mm_struct *mm);
79bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
80struct amdgpu_amdkfd_fence *to_amdgpu_amdkfd_fence(struct dma_fence *f);
81
82struct amdkfd_process_info {
83 /* List head of all VMs that belong to a KFD process */
84 struct list_head vm_list_head;
85 /* List head for all KFD BOs that belong to a KFD process. */
86 struct list_head kfd_bo_list;
87 /* Lock to protect kfd_bo_list */
88 struct mutex lock;
89
90 /* Number of VMs */
91 unsigned int n_vms;
92 /* Eviction Fence */
93 struct amdgpu_amdkfd_fence *eviction_fence;
94};
95
96int amdgpu_amdkfd_init(void);
97void amdgpu_amdkfd_fini(void);
98
99void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
100int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
101void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
102 const void *ih_ring_entry);
103void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
104void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
105void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
106
107int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
108 uint32_t vmid, uint64_t gpu_addr,
109 uint32_t *ib_cmd, uint32_t ib_len);
110
111struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
112struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);
113
114bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
115
116/* Shared API */
117int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
118 void **mem_obj, uint64_t *gpu_addr,
119 void **cpu_ptr);
120void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
121void get_local_mem_info(struct kgd_dev *kgd,
122 struct kfd_local_mem_info *mem_info);
123uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);
124
125uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
126void get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
127uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
128
129#define read_user_wptr(mmptr, wptr, dst) \
130 ({ \
131 bool valid = false; \
132 if ((mmptr) && (wptr)) { \
133 if ((mmptr) == current->mm) { \
134 valid = !get_user((dst), (wptr)); \
135 } else if (current->mm == NULL) { \
136 use_mm(mmptr); \
137 valid = !get_user((dst), (wptr)); \
138 unuse_mm(mmptr); \
139 } \
140 } \
141 valid; \
142 })
143
144/* GPUVM API */
145int amdgpu_amdkfd_gpuvm_create_process_vm(struct kgd_dev *kgd, void **vm,
146 void **process_info,
147 struct dma_fence **ef);
148int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
149 struct file *filp,
150 void **vm, void **process_info,
151 struct dma_fence **ef);
152void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
153 struct amdgpu_vm *vm);
154void amdgpu_amdkfd_gpuvm_destroy_process_vm(struct kgd_dev *kgd, void *vm);
155uint32_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
156int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
157 struct kgd_dev *kgd, uint64_t va, uint64_t size,
158 void *vm, struct kgd_mem **mem,
159 uint64_t *offset, uint32_t flags);
160int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
161 struct kgd_dev *kgd, struct kgd_mem *mem);
162int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
163 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
164int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
165 struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
166int amdgpu_amdkfd_gpuvm_sync_memory(
167 struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
168int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
169 struct kgd_mem *mem, void **kptr, uint64_t *size);
170int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
171 struct dma_fence **ef);
172
173void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
174void amdgpu_amdkfd_unreserve_system_memory_limit(struct amdgpu_bo *bo);
175
176#endif /* AMDGPU_AMDKFD_H_INCLUDED */