[PATCH for-next V2 3/5] IB/mlx5: Add support for hca_core_clock and timestamp_mask

Matan Barak
2015-12-15T18:30:11Z

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-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Moshe Lazer <moshel-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
drivers/infiniband/hw/mlx5/main.c | 2 ++
include/linux/mlx5/mlx5_ifc.h | 9 ++++++---
2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 7e97cb5..c707c43 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -293,6 +293,8 @@ 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 1565324..1a74114 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 {
--
2.1.0