gpu: nvgpu: nvlink: Add HAL to get link_mask

VBIOS link_disable_mask should be sufficient to find the connected
links. As VBIOS is not updated with correct mask, we parse the DT
node where we hardcode the link_id. DT method is not scalable as same
DT node is used for different dGPUs connected over PCIE. Remove the
DT parsing of link id and use HAL to get link_mask based on the GPU.

JIRA NVLINK-162

Change-Id: Idb7b639962928ce48711a0d7fc277c4c324bee91
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1738967
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/nvlink.c b/drivers/gpu/nvgpu/common/linux/nvlink.c
index faa27239..c93514c0 100644
--- a/drivers/gpu/nvgpu/common/linux/nvlink.c
+++ b/drivers/gpu/nvgpu/common/linux/nvlink.c
@@ -28,7 +28,6 @@ int nvgpu_nvlink_read_dt_props(struct gk20a *g)
         u32 local_link_id;
         u32 remote_dev_id;
         u32 remote_link_id;
-        u32 physical_link;
         bool is_master;
 
         /* Parse DT */
@@ -49,7 +48,6 @@ int nvgpu_nvlink_read_dt_props(struct gk20a *g)
         of_property_read_u32(np, "local_link_id", &local_link_id);
         of_property_read_u32(np, "remote_dev_id", &remote_dev_id);
         of_property_read_u32(np, "remote_link_id", &remote_link_id);
-        of_property_read_u32(np, "physical_link", &physical_link);
         is_master = of_property_read_bool(np, "is_master");
 
         /* Check that we are in dGPU mode */
@@ -64,7 +62,6 @@ int nvgpu_nvlink_read_dt_props(struct gk20a *g)
         ndev->link.remote_dev_info.device_id = remote_dev_id;
         ndev->link.remote_dev_info.link_id = remote_link_id;
 
-        g->nvlink.connected_links = BIT(physical_link);
         return 0;
 
 fail: