2 * Copyright 2016 Advanced Micro Devices, Inc.
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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
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25 #include <drm/drm_exec.h>
29 uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
31 uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
33 addr -= AMDGPU_VA_RESERVED_SIZE;
34 addr = amdgpu_gmc_sign_extend(addr);
39 int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
40 u32 domain, uint32_t size)
44 amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
51 adev->virt.csa_cpu_addr = ptr;
55 void amdgpu_free_static_csa(struct amdgpu_bo **bo)
57 amdgpu_bo_free_kernel(bo, NULL, NULL);
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.
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)
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);
77 r = drm_exec_lock_obj(&exec, &bo->tbo.base);
78 drm_exec_retry_on_contention(&exec);
80 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
85 *bo_va = amdgpu_vm_bo_add(adev, vm, bo);
91 r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size,
92 AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |
93 AMDGPU_PTE_EXECUTABLE);
96 DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r);
97 amdgpu_vm_bo_del(adev, *bo_va);
102 drm_exec_fini(&exec);
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,
110 struct drm_exec exec;
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);
117 r = drm_exec_lock_obj(&exec, &bo->tbo.base);
118 drm_exec_retry_on_contention(&exec);
120 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
125 r = amdgpu_vm_bo_unmap(adev, bo_va, csa_addr);
127 DRM_ERROR("failed to do bo_unmap on static CSA, err=%d\n", r);
131 amdgpu_vm_bo_del(adev, bo_va);
134 drm_exec_fini(&exec);