2 * Copyright 2016 Advanced Micro Devices, Inc.
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5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
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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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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
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27 uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
29 uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
31 addr -= AMDGPU_VA_RESERVED_SIZE;
32 addr = amdgpu_gmc_sign_extend(addr);
37 int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
38 u32 domain, uint32_t size)
43 r = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
50 adev->virt.csa_cpu_addr = ptr;
54 void amdgpu_free_static_csa(struct amdgpu_bo **bo)
56 amdgpu_bo_free_kernel(bo, NULL, NULL);
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.
65 int 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)
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;
75 INIT_LIST_HEAD(&list);
76 INIT_LIST_HEAD(&csa_tv.head);
78 csa_tv.num_shared = 1;
80 list_add(&csa_tv.head, &list);
81 amdgpu_vm_get_pd_bo(vm, &list, &pd);
83 r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
85 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
89 *bo_va = amdgpu_vm_bo_add(adev, vm, bo);
91 ttm_eu_backoff_reservation(&ticket, &list);
92 DRM_ERROR("failed to create bo_va for static CSA\n");
96 r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size,
97 AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |
98 AMDGPU_PTE_EXECUTABLE);
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);
107 ttm_eu_backoff_reservation(&ticket, &list);