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139 lines · 3.7 KiB

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: [email protected]
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 = AMDGPU_VA_RESERVED_CSA_START(adev);
32
33 addr = amdgpu_gmc_sign_extend(addr);
34
35 return addr;
36}
37
38int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
39 u32 domain, uint32_t size)
40{
41 void *ptr;
42
43 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 drm_exec exec;
70 int r;
71
72 drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);
73 drm_exec_until_all_locked(&exec) {
74 r = amdgpu_vm_lock_pd(vm, &exec, 0);
75 if (likely(!r))
76 r = drm_exec_lock_obj(&exec, &bo->tbo.base);
77 drm_exec_retry_on_contention(&exec);
78 if (unlikely(r)) {
79 drm_err(adev_to_drm(adev),
80 "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_err(adev_to_drm(adev),
97 "failed to do bo_map on static CSA, err=%d\n", r);
98 amdgpu_vm_bo_del(adev, *bo_va);
99 goto error;
100 }
101
102error:
103 drm_exec_fini(&exec);
104 return r;
105}
106
107int amdgpu_unmap_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
108 struct amdgpu_bo *bo, struct amdgpu_bo_va *bo_va,
109 uint64_t csa_addr)
110{
111 struct drm_exec exec;
112 int r;
113
114 drm_exec_init(&exec, 0, 0);
115 drm_exec_until_all_locked(&exec) {
116 r = amdgpu_vm_lock_pd(vm, &exec, 0);
117 if (likely(!r))
118 r = drm_exec_lock_obj(&exec, &bo->tbo.base);
119 drm_exec_retry_on_contention(&exec);
120 if (unlikely(r)) {
121 drm_err(adev_to_drm(adev),
122 "failed to reserve CSA,PD BOs: err=%d\n", r);
123 goto error;
124 }
125 }
126
127 r = amdgpu_vm_bo_unmap(adev, bo_va, csa_addr);
128 if (r) {
129 drm_err(adev_to_drm(adev),
130 "failed to do bo_unmap on static CSA, err=%d\n", r);
131 goto error;
132 }
133
134 amdgpu_vm_bo_del(adev, bo_va);
135
136error:
137 drm_exec_fini(&exec);
138 return r;
139}