From: Saeed Mahameed <saeed@kernel.org>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <edumazet@google.com>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
netdev@vger.kernel.org, Tariq Toukan <tariqt@nvidia.com>,
Gal Pressman <gal@nvidia.com>
Subject: [net-next 02/11] net/mlx5: Expose Management PCIe Index Register (MPIR)
Date: Wed, 13 Dec 2023 18:08:23 -0800 [thread overview]
Message-ID: <20231214020832.50703-3-saeed@kernel.org> (raw)
In-Reply-To: <20231214020832.50703-1-saeed@kernel.org>
From: Tariq Toukan <tariqt@nvidia.com>
MPIR register allows to query the PCIe indexes
and Socket-Direct related parameters.
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
.../net/ethernet/mellanox/mlx5/core/mlx5_core.h | 1 +
drivers/net/ethernet/mellanox/mlx5/core/port.c | 10 ++++++++++
include/linux/mlx5/driver.h | 1 +
include/linux/mlx5/mlx5_ifc.h | 14 ++++++++++++++
4 files changed, 26 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index 6b14e347d914..a79b7959361b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -243,6 +243,7 @@ int mlx5_query_mcam_reg(struct mlx5_core_dev *dev, u32 *mcap, u8 feature_group,
u8 access_reg_group);
int mlx5_query_qcam_reg(struct mlx5_core_dev *mdev, u32 *qcam,
u8 feature_group, u8 access_reg_group);
+int mlx5_query_mpir_reg(struct mlx5_core_dev *dev, u32 *mpir);
void mlx5_lag_add_netdev(struct mlx5_core_dev *dev, struct net_device *netdev);
void mlx5_lag_remove_netdev(struct mlx5_core_dev *dev, struct net_device *netdev);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 7d8c732818f2..7fba1c46e2ac 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -1206,3 +1206,13 @@ int mlx5_port_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed)
*speed = max_speed;
return 0;
}
+
+int mlx5_query_mpir_reg(struct mlx5_core_dev *dev, u32 *mpir)
+{
+ u32 in[MLX5_ST_SZ_DW(mpir_reg)] = {};
+ int sz = MLX5_ST_SZ_BYTES(mpir_reg);
+
+ MLX5_SET(mpir_reg, in, local_port, 1);
+
+ return mlx5_core_access_reg(dev, in, sz, mpir, sz, MLX5_REG_MPIR, 0, 0);
+}
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index d2b8d4a74a30..2f67cec1a898 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -150,6 +150,7 @@ enum {
MLX5_REG_MTPPSE = 0x9054,
MLX5_REG_MTUTC = 0x9055,
MLX5_REG_MPEGC = 0x9056,
+ MLX5_REG_MPIR = 0x9059,
MLX5_REG_MCQS = 0x9060,
MLX5_REG_MCQI = 0x9061,
MLX5_REG_MCC = 0x9062,
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 405d141b4a08..828938368fb7 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -10108,6 +10108,20 @@ struct mlx5_ifc_mpegc_reg_bits {
u8 reserved_at_60[0x100];
};
+struct mlx5_ifc_mpir_reg_bits {
+ u8 sdm[0x1];
+ u8 reserved_at_1[0x1b];
+ u8 host_buses[0x4];
+
+ u8 reserved_at_20[0x20];
+
+ u8 local_port[0x8];
+ u8 reserved_at_28[0x15];
+ u8 sd_group[0x3];
+
+ u8 reserved_at_60[0x20];
+};
+
enum {
MLX5_MTUTC_FREQ_ADJ_UNITS_PPB = 0x0,
MLX5_MTUTC_FREQ_ADJ_UNITS_SCALED_PPM = 0x1,
--
2.43.0
next prev parent reply other threads:[~2023-12-14 2:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 2:08 [pull request][net-next 00/11] mlx5 updates 2023-12-13 Saeed Mahameed
2023-12-14 2:08 ` [net-next 01/11] net/mlx5: Add mlx5_ifc bits used for supporting single netdev Socket-Direct Saeed Mahameed
2023-12-14 2:08 ` Saeed Mahameed [this message]
2023-12-14 2:08 ` [net-next 03/11] net/mlx5: fs, Command to control L2TABLE entry silent mode Saeed Mahameed
2023-12-14 2:08 ` [net-next 04/11] net/mlx5: fs, Command to control TX flow table root Saeed Mahameed
2023-12-14 2:08 ` [net-next 05/11] net/mlx5e: Remove TLS-specific logic in generic create TIS API Saeed Mahameed
2023-12-14 2:08 ` [net-next 06/11] net/mlx5: Move TISes from priv to mdev HW resources Saeed Mahameed
2023-12-14 2:08 ` [net-next 07/11] net/mlx5e: Statify function mlx5e_monitor_counter_arm Saeed Mahameed
2023-12-14 2:08 ` [net-next 08/11] net/mlx5e: Add wrapping for auxiliary_driver ops and remove unused args Saeed Mahameed
2023-12-14 2:08 ` [net-next 09/11] net/mlx5e: Decouple CQ from priv Saeed Mahameed
2023-12-14 2:08 ` [net-next 10/11] net/mlx5: devcom, Add component size getter Saeed Mahameed
2023-12-14 2:08 ` [net-next 11/11] net/mlx5: DR, Use swap() instead of open coding it Saeed Mahameed
2023-12-19 0:03 ` [pull request][net-next 00/11] mlx5 updates 2023-12-13 Jakub Kicinski
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