drm/amdkfd: Update number of compute unit from KGD

Overwrite the active simd_count from KGD at driver loading time. This is
based on assumption that register GC_USER_SHADER_ARRAY_CONFIG won’t get
changed.

V2: remove the incorrect simd_count reported at loading module.

Signed-off-by: Flora Cui <flora.cui@amd.com>
Reviewed by: Yair Shachar< yair.shachar@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index cb0303a323d2..ca2e51a2fe75 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -133,8 +133,7 @@ static void kfd_populated_cu_info_gpu(struct kfd_topology_device *dev,
         dev->node_props.max_slots_scratch_cu = cu->max_slots_scatch_cu;
         if (cu->hsa_capability & CRAT_CU_FLAGS_HOT_PLUGGABLE)
                 dev->node_props.capability |= HSA_CAP_HOT_PLUGGABLE;
-        pr_info("CU GPU: simds=%d id_base=%d\n", cu->num_simd_cores,
-                                cu->processor_id_low);
+        pr_info("CU GPU: id_base=%d\n", cu->processor_id_low);
 }
 
 /* kfd_parse_subtype_cu is called when the topology mutex is already acquired */
@@ -1124,6 +1123,7 @@ int kfd_topology_add_device(struct kfd_dev *gpu)
 {
         uint32_t gpu_id;
         struct kfd_topology_device *dev;
+        struct kfd_cu_info cu_info;
         int res;
 
         gpu_id = kfd_generate_gpu_id(gpu);
@@ -1161,6 +1161,9 @@ int kfd_topology_add_device(struct kfd_dev *gpu)
 
         dev->gpu_id = gpu_id;
         gpu->id = gpu_id;
+        dev->gpu->kfd2kgd->get_cu_info(dev->gpu->kgd, &cu_info);
+        dev->node_props.simd_count = dev->node_props.simd_per_cu *
+                        cu_info.cu_active_number;
         dev->node_props.vendor_id = gpu->pdev->vendor;
         dev->node_props.device_id = gpu->pdev->device;
         dev->node_props.location_id = (gpu->pdev->bus->number << 24) +