1bf0a60b7SAlex Deucher /* 2bf0a60b7SAlex Deucher * Copyright 2018 Advanced Micro Devices, Inc. 3bf0a60b7SAlex Deucher * 4bf0a60b7SAlex Deucher * Permission is hereby granted, free of charge, to any person obtaining a 5bf0a60b7SAlex Deucher * copy of this software and associated documentation files (the "Software"), 6bf0a60b7SAlex Deucher * to deal in the Software without restriction, including without limitation 7bf0a60b7SAlex Deucher * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8bf0a60b7SAlex Deucher * and/or sell copies of the Software, and to permit persons to whom the 9bf0a60b7SAlex Deucher * Software is furnished to do so, subject to the following conditions: 10bf0a60b7SAlex Deucher * 11bf0a60b7SAlex Deucher * The above copyright notice and this permission notice shall be included in 12bf0a60b7SAlex Deucher * all copies or substantial portions of the Software. 13bf0a60b7SAlex Deucher * 14bf0a60b7SAlex Deucher * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15bf0a60b7SAlex Deucher * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16bf0a60b7SAlex Deucher * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17bf0a60b7SAlex Deucher * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18bf0a60b7SAlex Deucher * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19bf0a60b7SAlex Deucher * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20bf0a60b7SAlex Deucher * OTHER DEALINGS IN THE SOFTWARE. 21bf0a60b7SAlex Deucher * 22bf0a60b7SAlex Deucher */ 23bf0a60b7SAlex Deucher #include "amdgpu.h" 24bf0a60b7SAlex Deucher #include "gfxhub_v1_1.h" 25bf0a60b7SAlex Deucher 26bf0a60b7SAlex Deucher #include "gc/gc_9_2_1_offset.h" 27bf0a60b7SAlex Deucher #include "gc/gc_9_2_1_sh_mask.h" 28bf0a60b7SAlex Deucher 29bf0a60b7SAlex Deucher #include "soc15_common.h" 30bf0a60b7SAlex Deucher 31bf0a60b7SAlex Deucher int gfxhub_v1_1_get_xgmi_info(struct amdgpu_device *adev) 32bf0a60b7SAlex Deucher { 33bf0a60b7SAlex Deucher u32 xgmi_lfb_cntl = RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_CNTL); 34bf0a60b7SAlex Deucher u32 max_region = 35bf0a60b7SAlex Deucher REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_MAX_REGION); 36bf0a60b7SAlex Deucher 37bf0a60b7SAlex Deucher /* PF_MAX_REGION=0 means xgmi is disabled */ 38bf0a60b7SAlex Deucher if (max_region) { 39bf0a60b7SAlex Deucher adev->gmc.xgmi.num_physical_nodes = max_region + 1; 40bf0a60b7SAlex Deucher if (adev->gmc.xgmi.num_physical_nodes > 4) 41bf0a60b7SAlex Deucher return -EINVAL; 42bf0a60b7SAlex Deucher 43bf0a60b7SAlex Deucher adev->gmc.xgmi.physical_node_id = 44bf0a60b7SAlex Deucher REG_GET_FIELD(xgmi_lfb_cntl, MC_VM_XGMI_LFB_CNTL, PF_LFB_REGION); 45bf0a60b7SAlex Deucher if (adev->gmc.xgmi.physical_node_id > 3) 46bf0a60b7SAlex Deucher return -EINVAL; 47*6fdd68b1SAlex Deucher adev->gmc.xgmi.node_segment_size = REG_GET_FIELD( 48*6fdd68b1SAlex Deucher RREG32_SOC15(GC, 0, mmMC_VM_XGMI_LFB_SIZE), 49*6fdd68b1SAlex Deucher MC_VM_XGMI_LFB_SIZE, PF_LFB_SIZE) << 24; 50bf0a60b7SAlex Deucher } 51bf0a60b7SAlex Deucher 52bf0a60b7SAlex Deucher return 0; 53bf0a60b7SAlex Deucher } 54