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 27 uint64_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 37 int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo, 38 u32 domain, uint32_t size) 39 { 40 void *ptr; 41 42 amdgpu_bo_create_kernel(adev, size, PAGE_SIZE, 43 domain, bo, 44 NULL, &ptr); 45 if (!*bo) 46 return -ENOMEM; 47 48 memset(ptr, 0, size); 49 adev->virt.csa_cpu_addr = ptr; 50 return 0; 51 } 52 53 void amdgpu_free_static_csa(struct amdgpu_bo **bo) 54 { 55 amdgpu_bo_free_kernel(bo, NULL, NULL); 56 } 57 58 /* 59 * amdgpu_map_static_csa should be called during amdgpu_vm_init 60 * it maps virtual address amdgpu_csa_vaddr() to this VM, and each command 61 * submission of GFX should use this virtual address within META_DATA init 62 * package to support SRIOV gfx preemption. 63 */ 64 int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm, 65 struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va, 66 uint64_t csa_addr, uint32_t size) 67 { 68 struct ww_acquire_ctx ticket; 69 struct list_head list; 70 struct amdgpu_bo_list_entry pd; 71 struct ttm_validate_buffer csa_tv; 72 int r; 73 74 INIT_LIST_HEAD(&list); 75 INIT_LIST_HEAD(&csa_tv.head); 76 csa_tv.bo = &bo->tbo; 77 csa_tv.num_shared = 1; 78 79 list_add(&csa_tv.head, &list); 80 amdgpu_vm_get_pd_bo(vm, &list, &pd); 81 82 r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); 83 if (r) { 84 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r); 85 return r; 86 } 87 88 *bo_va = amdgpu_vm_bo_add(adev, vm, bo); 89 if (!*bo_va) { 90 ttm_eu_backoff_reservation(&ticket, &list); 91 DRM_ERROR("failed to create bo_va for static CSA\n"); 92 return -ENOMEM; 93 } 94 95 r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size, 96 AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE | 97 AMDGPU_PTE_EXECUTABLE); 98 99 if (r) { 100 DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r); 101 amdgpu_vm_bo_rmv(adev, *bo_va); 102 ttm_eu_backoff_reservation(&ticket, &list); 103 return r; 104 } 105 106 ttm_eu_backoff_reservation(&ticket, &list); 107 return 0; 108 } 109