mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-02-27 12:55:59 -05:00
Code Issues Packages Projects Releases Wiki Activity

net/mlx5: Handle memory scheme ODP capabilities

Browse Source 
When running over new FW that supports the new memory scheme ODP, set
the cap in the FW to signal the FW we are working in the new scheme.

In the memory scheme ODP the per_transport_service capabilities are RO
for the driver so we skip their setting.

Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Link: https://patch.msgid.link/20240909100504.29797-9-michaelgur@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Michael Guralnik
2024-09-09 13:05:04 +03:00
committed by Leon Romanovsky
parent 6f2487bfaf
commit 907936b6f4
2 changed files with 25 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@@ -454,8 +454,8 @@ static int handle_hca_cap_atomic(struct mlx5_core_dev *dev, void *set_ctx)
static int handle_hca_cap_odp(struct mlx5_core_dev *dev, void *set_ctx)
{
bool do_set = false, mem_page_fault = false;
void *set_hca_cap;
bool do_set = false;
int err;
if (!IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING) ||
@@ -470,6 +470,17 @@ static int handle_hca_cap_odp(struct mlx5_core_dev *dev, void *set_ctx)
memcpy(set_hca_cap, dev->caps.hca[MLX5_CAP_ODP]->cur,
MLX5_ST_SZ_BYTES(odp_cap));
/* For best performance, enable memory scheme ODP only when
* it has page prefetch enabled.
*/
if (MLX5_CAP_ODP_MAX(dev, mem_page_fault) &&
MLX5_CAP_ODP_MAX(dev, memory_page_fault_scheme_cap.page_prefetch)) {
mem_page_fault = true;
do_set = true;
MLX5_SET(odp_cap, set_hca_cap, mem_page_fault, mem_page_fault);
goto set;
}
#define ODP_CAP_SET_MAX(dev, field) \
do { \
u32 _res = MLX5_CAP_ODP_MAX(dev, field); \
@@ -494,10 +505,13 @@ static int handle_hca_cap_odp(struct mlx5_core_dev *dev, void *set_ctx)
ODP_CAP_SET_MAX(dev, transport_page_fault_scheme_cap.dc_odp_caps.read);
ODP_CAP_SET_MAX(dev, transport_page_fault_scheme_cap.dc_odp_caps.atomic);
if (!do_set)
return 0;
set:
if (do_set)
err = set_caps(dev, set_ctx, MLX5_SET_HCA_CAP_OP_MOD_ODP);
return set_caps(dev, set_ctx, MLX5_SET_HCA_CAP_OP_MOD_ODP);
mlx5_core_dbg(dev, "Using ODP %s scheme\n",
mem_page_fault ? "memory" : "transport");
return err;
}
static int max_uc_list_get_devlink_param(struct mlx5_core_dev *dev)

10
include/linux/mlx5/device.h
View File

@@ -1389,9 +1389,13 @@ enum mlx5_qcam_feature_groups {
#define MLX5_CAP_ODP(mdev, cap)\
MLX5_GET(odp_cap, mdev->caps.hca[MLX5_CAP_ODP]->cur, cap)
#define MLX5_CAP_ODP_SCHEME(mdev, cap) \
MLX5_GET(odp_cap, mdev->caps.hca[MLX5_CAP_ODP]->cur, \
transport_page_fault_scheme_cap.cap)
#define MLX5_CAP_ODP_SCHEME(mdev, cap) \
(MLX5_GET(odp_cap, mdev->caps.hca[MLX5_CAP_ODP]->cur, \
mem_page_fault) ? \
MLX5_GET(odp_cap, mdev->caps.hca[MLX5_CAP_ODP]->cur, \
memory_page_fault_scheme_cap.cap) : \
MLX5_GET(odp_cap, mdev->caps.hca[MLX5_CAP_ODP]->cur, \
transport_page_fault_scheme_cap.cap))
#define MLX5_CAP_ODP_MAX(mdev, cap)\
MLX5_GET(odp_cap, mdev->caps.hca[MLX5_CAP_ODP]->max, cap)