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net/mlx5: Use max_num_eqs_24b capability if set

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A new capability with more bits is added. If it's set use that value as
the maximum number of EQs available.

This cap is also writable by the vhca_resource_manager to allow limiting
the number of EQs available to SFs and VFs.

Fixes: 93197c7c50 ("mlx5/core: Support max_io_eqs for a function")
Signed-off-by: Daniel Jurgens <danielj@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: William Tu <witu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Jurgens 2024-06-27 21:02:35 +03:00 committed by David S. Miller
parent 048a403648
commit 29c6a562bf
3 changed files with 12 additions and 6 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/eq.c
View File

@ -1197,9 +1197,7 @@ static int get_num_eqs(struct mlx5_core_dev *dev)
if (!mlx5_core_is_eth_enabled(dev) && mlx5_eth_supported(dev))
return 1;
max_dev_eqs = MLX5_CAP_GEN(dev, max_num_eqs) ?
MLX5_CAP_GEN(dev, max_num_eqs) :
1 << MLX5_CAP_GEN(dev, log_max_eq);
max_dev_eqs = mlx5_max_eq_cap_get(dev);
num_eqs = min_t(int, mlx5_irq_table_get_num_comp(eq_table->irq_table),
max_dev_eqs - MLX5_MAX_ASYNC_EQS);

10
drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
View File

@ -383,4 +383,14 @@ static inline int mlx5_vport_to_func_id(const struct mlx5_core_dev *dev, u16 vpo
: vport;
}
static inline int mlx5_max_eq_cap_get(const struct mlx5_core_dev *dev)
{
if (MLX5_CAP_GEN_2(dev, max_num_eqs_24b))
return MLX5_CAP_GEN_2(dev, max_num_eqs_24b);
if (MLX5_CAP_GEN(dev, max_num_eqs))
return MLX5_CAP_GEN(dev, max_num_eqs);
return 1 << MLX5_CAP_GEN(dev, log_max_eq);
}
#endif /* __MLX5_CORE_H__ */

4
drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
View File

@ -711,9 +711,7 @@ int mlx5_irq_table_get_num_comp(struct mlx5_irq_table *table)
int mlx5_irq_table_create(struct mlx5_core_dev *dev)
{
int num_eqs = MLX5_CAP_GEN(dev, max_num_eqs) ?
MLX5_CAP_GEN(dev, max_num_eqs) :
1 << MLX5_CAP_GEN(dev, log_max_eq);
int num_eqs = mlx5_max_eq_cap_get(dev);
int total_vec;
int pcif_vec;
int req_vec;