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1/*2 * Copyright 2016 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 22 * * Author: Monk.liu@amd.com23 */24 25#include <drm/drm_exec.h>26 27#include "amdgpu.h"28 29uint64_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 38int 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 54void 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_init61 * it maps virtual address amdgpu_csa_vaddr() to this VM, and each command62 * submission of GFX should use this virtual address within META_DATA init63 * package to support SRIOV gfx preemption.64 */65int 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 100error:101 drm_exec_fini(&exec);102 return r;103}104 105int 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 132error:133 drm_exec_fini(&exec);134 return r;135}136