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 29 uint64_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 39 int 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 55 void 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 */ 66 int 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); 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 } 100 101 error: 102 drm_exec_fini(&exec); 103 return r; 104 } 105 106 int 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); 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); 132 133 error: 134 drm_exec_fini(&exec); 135 return r; 136 } 137