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