/* * Copyright 2018 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. * */ #include "amdgpu.h" #include "gfxhub_v1_1.h" #include "gc/gc_9_2_1_offset.h" #include "gc/gc_9_2_1_sh_mask.h" #include "soc15_common.h" int gfxhub_v1_1_get_xgmi_info(struct amdgpu_device *adev) { u32 xgmi_lfb_cntl = RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_CNTL); u32 max_region = REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_MAX_REGION); u32 max_num_physical_nodes = 0; u32 max_physical_node_id = 0; switch (adev->asic_type) { case CHIP_VEGA20: max_num_physical_nodes = 4; max_physical_node_id = 3; break; case CHIP_ARCTURUS: max_num_physical_nodes = 8; max_physical_node_id = 7; break; default: return -EINVAL; } /* PF_MAX_REGION=0 means xgmi is disabled */ if (max_region) { adev->gmc.xgmi.num_physical_nodes = max_region + 1; if (adev->gmc.xgmi.num_physical_nodes > max_num_physical_nodes) return -EINVAL; adev->gmc.xgmi.physical_node_id = REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_LFB_REGION); if (adev->gmc.xgmi.physical_node_id > max_physical_node_id) return -EINVAL; adev->gmc.xgmi.node_segment_size = REG_GET_FIELD( RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_SIZE), MC_VM_XGMI_LFB_SIZE, PF_LFB_SIZE) << 24; } return 0; }