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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 * * Author: Monk.liu@amd.com
23 */
24
25#include <drm/drm_exec.h>
26
27#include "amdgpu.h"
28
29uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
30{
31 uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
32
33 addr -= AMDGPU_VA_RESERVED_SIZE;
34 addr = amdgpu_gmc_sign_extend(addr);
35
36 return addr;
37}
38
39int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
40 u32 domain, uint32_t size)
41{
42 void *ptr;
43
44 amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
45 domain, bo,
46 NULL, &ptr);
47 if (!*bo)
48 return -ENOMEM;
49
50 memset(ptr, 0, size);
51 adev->virt.csa_cpu_addr = ptr;
52 return 0;
53}
54
55void amdgpu_free_static_csa(struct amdgpu_bo **bo)
56{
57 amdgpu_bo_free_kernel(bo, NULL, NULL);
58}
59
60/*
61 * amdgpu_map_static_csa should be called during amdgpu_vm_init
62 * it maps virtual address amdgpu_csa_vaddr() to this VM, and each command
63 * submission of GFX should use this virtual address within META_DATA init
64 * package to support SRIOV gfx preemption.
65 */
66int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
67 struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va,
68 uint64_t csa_addr, uint32_t size)
69{
70 struct drm_exec exec;
71 int r;
72
73 drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
74 drm_exec_until_all_locked(&exec) {
75 r = amdgpu_vm_lock_pd(vm, &exec, 0);
76 if (likely(!r))
77 r = drm_exec_lock_obj(&exec, &bo->tbo.base);
78 drm_exec_retry_on_contention(&exec);
79 if (unlikely(r)) {
80 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
81 goto error;
82 }
83 }
84
85 *bo_va = amdgpu_vm_bo_add(adev, vm, bo);
86 if (!*bo_va) {
87 r = -ENOMEM;
88 goto error;
89 }
90
91 r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size,
92 AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |
93 AMDGPU_PTE_EXECUTABLE);
94
95 if (r) {
96 DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r);
97 amdgpu_vm_bo_del(adev, *bo_va);
98 goto error;
99 }
100
101error:
102 drm_exec_fini(&exec);
103 return r;
104}
105
106int amdgpu_unmap_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
107 struct amdgpu_bo *bo, struct amdgpu_bo_va *bo_va,
108 uint64_t csa_addr)
109{
110 struct drm_exec exec;
111 int r;
112
113 drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
114 drm_exec_until_all_locked(&exec) {
115 r = amdgpu_vm_lock_pd(vm, &exec, 0);
116 if (likely(!r))
117 r = drm_exec_lock_obj(&exec, &bo->tbo.base);
118 drm_exec_retry_on_contention(&exec);
119 if (unlikely(r)) {
120 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
121 goto error;
122 }
123 }
124
125 r = amdgpu_vm_bo_unmap(adev, bo_va, csa_addr);
126 if (r) {
127 DRM_ERROR("failed to do bo_unmap on static CSA, err=%d\n", r);
128 goto error;
129 }
130
131 amdgpu_vm_bo_del(adev, bo_va);
132
133error:
134 drm_exec_fini(&exec);
135 return r;
136}
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 * * Author: Monk.liu@amd.com
23 */
24
25#include "amdgpu.h"
26
27uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
28{
29 uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
30
31 addr -= AMDGPU_VA_RESERVED_SIZE;
32 addr = amdgpu_gmc_sign_extend(addr);
33
34 return addr;
35}
36
37int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
38 u32 domain, uint32_t size)
39{
40 int r;
41 void *ptr;
42
43 r = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
44 domain, bo,
45 NULL, &ptr);
46 if (!*bo)
47 return -ENOMEM;
48
49 memset(ptr, 0, size);
50 adev->virt.csa_cpu_addr = ptr;
51 return 0;
52}
53
54void amdgpu_free_static_csa(struct amdgpu_bo **bo)
55{
56 amdgpu_bo_free_kernel(bo, NULL, NULL);
57}
58
59/*
60 * amdgpu_map_static_csa should be called during amdgpu_vm_init
61 * it maps virtual address amdgpu_csa_vaddr() to this VM, and each command
62 * submission of GFX should use this virtual address within META_DATA init
63 * package to support SRIOV gfx preemption.
64 */
65int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
66 struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va,
67 uint64_t csa_addr, uint32_t size)
68{
69 struct ww_acquire_ctx ticket;
70 struct list_head list;
71 struct amdgpu_bo_list_entry pd;
72 struct ttm_validate_buffer csa_tv;
73 int r;
74
75 INIT_LIST_HEAD(&list);
76 INIT_LIST_HEAD(&csa_tv.head);
77 csa_tv.bo = &bo->tbo;
78 csa_tv.num_shared = 1;
79
80 list_add(&csa_tv.head, &list);
81 amdgpu_vm_get_pd_bo(vm, &list, &pd);
82
83 r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL, false);
84 if (r) {
85 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
86 return r;
87 }
88
89 *bo_va = amdgpu_vm_bo_add(adev, vm, bo);
90 if (!*bo_va) {
91 ttm_eu_backoff_reservation(&ticket, &list);
92 DRM_ERROR("failed to create bo_va for static CSA\n");
93 return -ENOMEM;
94 }
95
96 r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size,
97 AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |
98 AMDGPU_PTE_EXECUTABLE);
99
100 if (r) {
101 DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r);
102 amdgpu_vm_bo_rmv(adev, *bo_va);
103 ttm_eu_backoff_reservation(&ticket, &list);
104 return r;
105 }
106
107 ttm_eu_backoff_reservation(&ticket, &list);
108 return 0;
109}