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net/mlx5: Set ODP SRQ support in firmware 

To avoid compatibility issue with older kernels the firmware doesn't
allow SRQ to work with ODP unless kernel asks for it.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
hifive-unleashed-5.1
Moni Shoua 2019-01-22 08:48:51 +02:00 committed by Leon Romanovsky
parent dda7a817f2
commit 46861e3e88
3 changed files with 57 additions and 0 deletions
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53
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@ -459,6 +459,53 @@ static int handle_hca_cap_atomic(struct mlx5_core_dev *dev)
return err;
}
static int handle_hca_cap_odp(struct mlx5_core_dev *dev)
{
void *set_ctx;
void *set_hca_cap;
int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
int err;
if (!MLX5_CAP_GEN(dev, pg))
return 0;
err = mlx5_core_get_caps(dev, MLX5_CAP_ODP);
if (err)
return err;
/**
* If all bits are cleared we shouldn't try to set it
* or we might fail while trying to access a reserved bit.
*/
if (!(MLX5_CAP_ODP_MAX(dev, ud_odp_caps.srq_receive) ||
MLX5_CAP_ODP_MAX(dev, rc_odp_caps.srq_receive) ||
MLX5_CAP_ODP_MAX(dev, xrc_odp_caps.srq_receive)))
return 0;
set_ctx = kzalloc(set_sz, GFP_KERNEL);
if (!set_ctx)
return -ENOMEM;
set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability);
memcpy(set_hca_cap, dev->caps.hca_cur[MLX5_CAP_ODP],
MLX5_ST_SZ_BYTES(odp_cap));
/* set ODP SRQ support for RC/UD and XRC transports */
MLX5_SET(odp_cap, set_hca_cap, ud_odp_caps.srq_receive,
(MLX5_CAP_ODP_MAX(dev, ud_odp_caps.srq_receive)));
MLX5_SET(odp_cap, set_hca_cap, rc_odp_caps.srq_receive,
(MLX5_CAP_ODP_MAX(dev, rc_odp_caps.srq_receive)));
MLX5_SET(odp_cap, set_hca_cap, xrc_odp_caps.srq_receive,
(MLX5_CAP_ODP_MAX(dev, xrc_odp_caps.srq_receive)));
err = set_caps(dev, set_ctx, set_sz, MLX5_SET_HCA_CAP_OP_MOD_ODP);
kfree(set_ctx);
return err;
}
static int handle_hca_cap(struct mlx5_core_dev *dev)
{
void *set_ctx = NULL;
@ -931,6 +978,12 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
goto reclaim_boot_pages;
}
err = handle_hca_cap_odp(dev);
if (err) {
dev_err(&pdev->dev, "handle_hca_cap_odp failed\n");
goto reclaim_boot_pages;
}
err = mlx5_satisfy_startup_pages(dev, 0);
if (err) {
dev_err(&pdev->dev, "failed to allocate init pages\n");

3
include/linux/mlx5/device.h
View File

@ -1201,6 +1201,9 @@ enum mlx5_qcam_feature_groups {
#define MLX5_CAP_ODP(mdev, cap)\
MLX5_GET(odp_cap, mdev->caps.hca_cur[MLX5_CAP_ODP], cap)
#define MLX5_CAP_ODP_MAX(mdev, cap)\
MLX5_GET(odp_cap, mdev->caps.hca_max[MLX5_CAP_ODP], cap)
#define MLX5_CAP_VECTOR_CALC(mdev, cap) \
MLX5_GET(vector_calc_cap, \
mdev->caps.hca_cur[MLX5_CAP_VECTOR_CALC], cap)

1
include/linux/mlx5/mlx5_ifc.h
View File

@ -72,6 +72,7 @@ enum {
enum {
MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE = 0x0,
MLX5_SET_HCA_CAP_OP_MOD_ODP = 0x2,
MLX5_SET_HCA_CAP_OP_MOD_ATOMIC = 0x3,
};