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 = AMDGPU_VA_RESERVED_CSA_START(adev); 32 33 addr = amdgpu_gmc_sign_extend(addr); 34 35 return addr; 36 } 37 38 int 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 54 void 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 */ 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) 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_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r); 80 goto error; 81 } 82 } 83 84 *bo_va = amdgpu_vm_bo_add(adev, vm, bo); 85 if (!*bo_va) { 86 r = -ENOMEM; 87 goto error; 88 } 89 90 r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size, 91 AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE | 92 AMDGPU_PTE_EXECUTABLE); 93 94 if (r) { 95 DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r); 96 amdgpu_vm_bo_del(adev, *bo_va); 97 goto error; 98 } 99 100 error: 101 drm_exec_fini(&exec); 102 return r; 103 } 104 105 int amdgpu_unmap_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm, 106 struct amdgpu_bo *bo, struct amdgpu_bo_va *bo_va, 107 uint64_t csa_addr) 108 { 109 struct drm_exec exec; 110 int r; 111 112 drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0); 113 drm_exec_until_all_locked(&exec) { 114 r = amdgpu_vm_lock_pd(vm, &exec, 0); 115 if (likely(!r)) 116 r = drm_exec_lock_obj(&exec, &bo->tbo.base); 117 drm_exec_retry_on_contention(&exec); 118 if (unlikely(r)) { 119 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r); 120 goto error; 121 } 122 } 123 124 r = amdgpu_vm_bo_unmap(adev, bo_va, csa_addr); 125 if (r) { 126 DRM_ERROR("failed to do bo_unmap on static CSA, err=%d\n", r); 127 goto error; 128 } 129 130 amdgpu_vm_bo_del(adev, bo_va); 131 132 error: 133 drm_exec_fini(&exec); 134 return r; 135 } 136