IB/mlx5: Add support for hca_core_clock and timestamp_mask

Reporting the hca_core_clock (in kHZ) and the timestamp_mask in
query_device extended verb. timestamp_mask is used by users in order
to know what is the valid range of the raw timestamps, while
hca_core_clock reports the clock frequency that is used for
timestamps.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Moshe Lazer <moshel@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

2 files changed, 8 insertions, 3 deletions

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 22ae0939b20e..2d7fac53214f 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -503,6 +503,8 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
                                            props->max_mcast_grp;
         props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
+        props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
+        props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
 
 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
         if (MLX5_CAP_GEN(mdev, pg))
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 49b34c6466ac..091d8343d594 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -794,15 +794,18 @@ struct mlx5_ifc_cmd_hca_cap_bits {
         u8         reserved_63[0x8];
         u8         log_uar_page_sz[0x10];
 
-        u8         reserved_64[0x100];
+        u8         reserved_64[0x20];
+        u8         device_frequency_mhz[0x20];
+        u8         device_frequency_khz[0x20];
+        u8         reserved_65[0xa0];
 
-        u8         reserved_65[0x1f];
+        u8         reserved_66[0x1f];
         u8         cqe_zip[0x1];
 
         u8         cqe_zip_timeout[0x10];
         u8         cqe_zip_max_num[0x10];
 
-        u8         reserved_66[0x220];
+        u8         reserved_67[0x220];
 };
 
 enum {