Line data    Source code

       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 "amdgpu.h"
      26             : 
      27           0 : uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
      28             : {
      29           0 :         uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
      30             : 
      31           0 :         addr -= AMDGPU_VA_RESERVED_SIZE;
      32           0 :         addr = amdgpu_gmc_sign_extend(addr);
      33             : 
      34           0 :         return addr;
      35             : }
      36             : 
      37           0 : int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,
      38             :                                 u32 domain, uint32_t size)
      39             : {
      40             :         void *ptr;
      41             : 
      42           0 :         amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
      43             :                                 domain, bo,
      44             :                                 NULL, &ptr);
      45           0 :         if (!*bo)
      46             :                 return -ENOMEM;
      47             : 
      48           0 :         memset(ptr, 0, size);
      49           0 :         adev->virt.csa_cpu_addr = ptr;
      50           0 :         return 0;
      51             : }
      52             : 
      53           0 : void amdgpu_free_static_csa(struct amdgpu_bo **bo)
      54             : {
      55           0 :         amdgpu_bo_free_kernel(bo, NULL, NULL);
      56           0 : }
      57             : 
      58             : /*
      59             :  * amdgpu_map_static_csa should be called during amdgpu_vm_init
      60             :  * it maps virtual address amdgpu_csa_vaddr() to this VM, and each command
      61             :  * submission of GFX should use this virtual address within META_DATA init
      62             :  * package to support SRIOV gfx preemption.
      63             :  */
      64           0 : int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,
      65             :                           struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va,
      66             :                           uint64_t csa_addr, uint32_t size)
      67             : {
      68             :         struct ww_acquire_ctx ticket;
      69             :         struct list_head list;
      70             :         struct amdgpu_bo_list_entry pd;
      71             :         struct ttm_validate_buffer csa_tv;
      72             :         int r;
      73             : 
      74           0 :         INIT_LIST_HEAD(&list);
      75           0 :         INIT_LIST_HEAD(&csa_tv.head);
      76           0 :         csa_tv.bo = &bo->tbo;
      77           0 :         csa_tv.num_shared = 1;
      78             : 
      79           0 :         list_add(&csa_tv.head, &list);
      80           0 :         amdgpu_vm_get_pd_bo(vm, &list, &pd);
      81             : 
      82           0 :         r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
      83           0 :         if (r) {
      84           0 :                 DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
      85           0 :                 return r;
      86             :         }
      87             : 
      88           0 :         *bo_va = amdgpu_vm_bo_add(adev, vm, bo);
      89           0 :         if (!*bo_va) {
      90           0 :                 ttm_eu_backoff_reservation(&ticket, &list);
      91           0 :                 DRM_ERROR("failed to create bo_va for static CSA\n");
      92           0 :                 return -ENOMEM;
      93             :         }
      94             : 
      95           0 :         r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size,
      96             :                              AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |
      97             :                              AMDGPU_PTE_EXECUTABLE);
      98             : 
      99           0 :         if (r) {
     100           0 :                 DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r);
     101           0 :                 amdgpu_vm_bo_del(adev, *bo_va);
     102           0 :                 ttm_eu_backoff_reservation(&ticket, &list);
     103           0 :                 return r;
     104             :         }
     105             : 
     106           0 :         ttm_eu_backoff_reservation(&ticket, &list);
     107           0 :         return 0;
     108             : }