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

Added max hive/node info checks per supported ASIC

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
John Clements 2019-12-02 17:57:25 +08:00 committed by Alex Deucher
parent 76d8f83b2a
commit f0312f45a0
1 changed files with 17 additions and 2 deletions
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19
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_1.c
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@ -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),