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gpu: nvgpu: nvlink: Add HAL to get link_mask

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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>
This commit is contained in:
Tejal Kudav
2018-06-04 13:15:28 +05:30
parent a3356b8ad7
commit 118b7fb891
5 changed files with 25 additions and 6 deletions
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3
drivers/gpu/nvgpu/common/linux/nvlink.c
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@@ -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: