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4e4bbe73 ML |
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 | */ | |
23 | ||
24 | #include "amdgpu.h" | |
25 | ||
26 | int amdgpu_allocate_static_csa(struct amdgpu_device *adev) | |
27 | { | |
28 | int r; | |
29 | void *ptr; | |
30 | ||
31 | r = amdgpu_bo_create_kernel(adev, AMDGPU_CSA_SIZE, PAGE_SIZE, | |
32 | AMDGPU_GEM_DOMAIN_VRAM, &adev->virt.csa_obj, | |
33 | &adev->virt.csa_vmid0_addr, &ptr); | |
34 | if (r) | |
35 | return r; | |
36 | ||
37 | memset(ptr, 0, AMDGPU_CSA_SIZE); | |
38 | return 0; | |
39 | } | |
40 | ||
41 | /* | |
42 | * amdgpu_map_static_csa should be called during amdgpu_vm_init | |
43 | * it maps virtual address "AMDGPU_VA_RESERVED_SIZE - AMDGPU_CSA_SIZE" | |
44 | * to this VM, and each command submission of GFX should use this virtual | |
45 | * address within META_DATA init package to support SRIOV gfx preemption. | |
46 | */ | |
47 | ||
48 | int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm) | |
49 | { | |
50 | int r; | |
51 | struct amdgpu_bo_va *bo_va; | |
52 | struct ww_acquire_ctx ticket; | |
53 | struct list_head list; | |
54 | struct amdgpu_bo_list_entry pd; | |
55 | struct ttm_validate_buffer csa_tv; | |
56 | ||
57 | INIT_LIST_HEAD(&list); | |
58 | INIT_LIST_HEAD(&csa_tv.head); | |
59 | csa_tv.bo = &adev->virt.csa_obj->tbo; | |
60 | csa_tv.shared = true; | |
61 | ||
62 | list_add(&csa_tv.head, &list); | |
63 | amdgpu_vm_get_pd_bo(vm, &list, &pd); | |
64 | ||
65 | r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); | |
66 | if (r) { | |
67 | DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r); | |
68 | return r; | |
69 | } | |
70 | ||
71 | bo_va = amdgpu_vm_bo_add(adev, vm, adev->virt.csa_obj); | |
72 | if (!bo_va) { | |
73 | ttm_eu_backoff_reservation(&ticket, &list); | |
74 | DRM_ERROR("failed to create bo_va for static CSA\n"); | |
75 | return -ENOMEM; | |
76 | } | |
77 | ||
78 | r = amdgpu_vm_bo_map(adev, bo_va, AMDGPU_CSA_VADDR, 0,AMDGPU_CSA_SIZE, | |
79 | AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE | | |
80 | AMDGPU_PTE_EXECUTABLE); | |
81 | ||
82 | if (r) { | |
83 | DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r); | |
84 | amdgpu_vm_bo_rmv(adev, bo_va); | |
85 | ttm_eu_backoff_reservation(&ticket, &list); | |
86 | kfree(bo_va); | |
87 | return r; | |
88 | } | |
89 | ||
90 | vm->csa_bo_va = bo_va; | |
91 | ttm_eu_backoff_reservation(&ticket, &list); | |
92 | return 0; | |
93 | } |