| /* |
| * Copyright 2016 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| |
| * * Author: Monk.liu@amd.com |
| */ |
| |
| #include "amdgpu.h" |
| |
| uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev) |
| { |
| uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT; |
| |
| addr -= AMDGPU_VA_RESERVED_SIZE; |
| addr = amdgpu_gmc_sign_extend(addr); |
| |
| return addr; |
| } |
| |
| int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo, |
| u32 domain, uint32_t size) |
| { |
| void *ptr; |
| |
| amdgpu_bo_create_kernel(adev, size, PAGE_SIZE, |
| domain, bo, |
| NULL, &ptr); |
| if (!*bo) |
| return -ENOMEM; |
| |
| memset(ptr, 0, size); |
| adev->virt.csa_cpu_addr = ptr; |
| return 0; |
| } |
| |
| void amdgpu_free_static_csa(struct amdgpu_bo **bo) |
| { |
| amdgpu_bo_free_kernel(bo, NULL, NULL); |
| } |
| |
| /* |
| * amdgpu_map_static_csa should be called during amdgpu_vm_init |
| * it maps virtual address amdgpu_csa_vaddr() to this VM, and each command |
| * submission of GFX should use this virtual address within META_DATA init |
| * package to support SRIOV gfx preemption. |
| */ |
| int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm, |
| struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va, |
| uint64_t csa_addr, uint32_t size) |
| { |
| struct ww_acquire_ctx ticket; |
| struct list_head list; |
| struct amdgpu_bo_list_entry pd; |
| struct ttm_validate_buffer csa_tv; |
| int r; |
| |
| INIT_LIST_HEAD(&list); |
| INIT_LIST_HEAD(&csa_tv.head); |
| csa_tv.bo = &bo->tbo; |
| csa_tv.num_shared = 1; |
| |
| list_add(&csa_tv.head, &list); |
| amdgpu_vm_get_pd_bo(vm, &list, &pd); |
| |
| r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); |
| if (r) { |
| DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r); |
| return r; |
| } |
| |
| *bo_va = amdgpu_vm_bo_add(adev, vm, bo); |
| if (!*bo_va) { |
| ttm_eu_backoff_reservation(&ticket, &list); |
| DRM_ERROR("failed to create bo_va for static CSA\n"); |
| return -ENOMEM; |
| } |
| |
| r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size, |
| AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE | |
| AMDGPU_PTE_EXECUTABLE); |
| |
| if (r) { |
| DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r); |
| amdgpu_vm_bo_del(adev, *bo_va); |
| ttm_eu_backoff_reservation(&ticket, &list); |
| return r; |
| } |
| |
| ttm_eu_backoff_reservation(&ticket, &list); |
| return 0; |
| } |