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author | 2017-07-18 16:08:46 -0500 | |
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committer | 2017-11-04 21:26:21 -0700 | |
commit | 415a64aa8dc6b4fc478609c549ca652d95a12f13 (patch) | |
tree | 8c72645e9ebdf569a384cb60540c54d329895afa /drivers/net/ethernet/mellanox | |
parent | net/mlx5: Add MLX5_SET16 and MLX5_GET16 (diff) | |
download | linux-415a64aa8dc6b4fc478609c549ca652d95a12f13.tar.gz linux-415a64aa8dc6b4fc478609c549ca652d95a12f13.tar.bz2 linux-415a64aa8dc6b4fc478609c549ca652d95a12f13.zip |
net/mlx5: QPTS and QPDPM register firmware command support
The QPTS register allows changing the priority trust state between pcp and
dscp. Add support to get/set trust state from device. When the port is
in pcp/dscp trust state, packet is routed by hardware to matching priority
based on its pcp/dscp value respectively.
The QPDPM register allow channing the dscp to priority mapping. Add support
to get/set dscp to priority mapping from device.
Note that to change a dscp mapping, the "e" bit of this dscp structure
must be set in the QPDPM firmware command.
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/port.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c index b6553be841f9..c37d00cd472a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/port.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c @@ -971,3 +971,102 @@ int mlx5_set_mtppse(struct mlx5_core_dev *mdev, u8 pin, u8 arm, u8 mode) return mlx5_core_access_reg(mdev, in, sizeof(in), out, sizeof(out), MLX5_REG_MTPPSE, 0, 1); } + +int mlx5_set_trust_state(struct mlx5_core_dev *mdev, u8 trust_state) +{ + u32 out[MLX5_ST_SZ_DW(qpts_reg)] = {}; + u32 in[MLX5_ST_SZ_DW(qpts_reg)] = {}; + int err; + + MLX5_SET(qpts_reg, in, local_port, 1); + MLX5_SET(qpts_reg, in, trust_state, trust_state); + + err = mlx5_core_access_reg(mdev, in, sizeof(in), out, + sizeof(out), MLX5_REG_QPTS, 0, 1); + return err; +} + +int mlx5_query_trust_state(struct mlx5_core_dev *mdev, u8 *trust_state) +{ + u32 out[MLX5_ST_SZ_DW(qpts_reg)] = {}; + u32 in[MLX5_ST_SZ_DW(qpts_reg)] = {}; + int err; + + MLX5_SET(qpts_reg, in, local_port, 1); + + err = mlx5_core_access_reg(mdev, in, sizeof(in), out, + sizeof(out), MLX5_REG_QPTS, 0, 0); + if (!err) + *trust_state = MLX5_GET(qpts_reg, out, trust_state); + + return err; +} + +int mlx5_set_dscp2prio(struct mlx5_core_dev *mdev, u8 dscp, u8 prio) +{ + int sz = MLX5_ST_SZ_BYTES(qpdpm_reg); + void *qpdpm_dscp; + void *out; + void *in; + int err; + + in = kzalloc(sz, GFP_KERNEL); + out = kzalloc(sz, GFP_KERNEL); + if (!in || !out) { + err = -ENOMEM; + goto out; + } + + MLX5_SET(qpdpm_reg, in, local_port, 1); + err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_QPDPM, 0, 0); + if (err) + goto out; + + memcpy(in, out, sz); + MLX5_SET(qpdpm_reg, in, local_port, 1); + + /* Update the corresponding dscp entry */ + qpdpm_dscp = MLX5_ADDR_OF(qpdpm_reg, in, dscp[dscp]); + MLX5_SET16(qpdpm_dscp_reg, qpdpm_dscp, prio, prio); + MLX5_SET16(qpdpm_dscp_reg, qpdpm_dscp, e, 1); + err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_QPDPM, 0, 1); + +out: + kfree(in); + kfree(out); + return err; +} + +/* dscp2prio[i]: priority that dscp i mapped to */ +#define MLX5E_SUPPORTED_DSCP 64 +int mlx5_query_dscp2prio(struct mlx5_core_dev *mdev, u8 *dscp2prio) +{ + int sz = MLX5_ST_SZ_BYTES(qpdpm_reg); + void *qpdpm_dscp; + void *out; + void *in; + int err; + int i; + + in = kzalloc(sz, GFP_KERNEL); + out = kzalloc(sz, GFP_KERNEL); + if (!in || !out) { + err = -ENOMEM; + goto out; + } + + MLX5_SET(qpdpm_reg, in, local_port, 1); + err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_QPDPM, 0, 0); + if (err) + goto out; + + for (i = 0; i < (MLX5E_SUPPORTED_DSCP); i++) { + qpdpm_dscp = MLX5_ADDR_OF(qpdpm_reg, out, dscp[i]); + dscp2prio[i] = MLX5_GET16(qpdpm_dscp_reg, qpdpm_dscp, prio); + } + +out: + kfree(in); + kfree(out); + return err; +} |