Commit f0312f45 authored by John Clements's avatar John Clements Committed by Alex Deucher
Browse files

drm/amdgpu: Added ASIC specific checks in gfxhub V1.1 get XGMI info 



Added max hive/node info checks per supported ASIC

Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarJohn Clements <john.clements@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 76d8f83b

drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c

+17 −2
Original line number Diff line number Diff line
@@ -33,16 +33,31 @@ 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 > 4)

		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 > 3)

		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),

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