drivers/net/ethernet/mellanox/mlx5/core/en/params.h

/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/* Copyright (c) 2019 Mellanox Technologies. */

#ifndef __MLX5_EN_PARAMS_H__
#define __MLX5_EN_PARAMS_H__

#include "en.h"

struct mlx5e_xsk_param {
	u16 headroom;
	u16 chunk_size;
};

struct mlx5e_lro_param {
	bool enabled;
	u32 timeout;
};

struct mlx5e_cq_param {
	u32                        cqc[MLX5_ST_SZ_DW(cqc)];
	struct mlx5_wq_param       wq;
	u16                        eq_ix;
	u8                         cq_period_mode;
};

struct mlx5e_rq_param {
	struct mlx5e_cq_param      cqp;
	u32                        rqc[MLX5_ST_SZ_DW(rqc)];
	struct mlx5_wq_param       wq;
	struct mlx5e_rq_frags_info frags_info;
};

struct mlx5e_sq_param {
	struct mlx5e_cq_param      cqp;
	u32                        sqc[MLX5_ST_SZ_DW(sqc)];
	struct mlx5_wq_param       wq;
	bool                       is_mpw;
	bool                       is_tls;
	u16                        stop_room;
};

struct mlx5e_channel_param {
	struct mlx5e_rq_param      rq;
	struct mlx5e_sq_param      txq_sq;
	struct mlx5e_sq_param      xdp_sq;
	struct mlx5e_sq_param      icosq;
	struct mlx5e_sq_param      async_icosq;
};

struct mlx5e_create_sq_param {
	struct mlx5_wq_ctrl        *wq_ctrl;
	u32                         cqn;
	u32                         ts_cqe_to_dest_cqn;
	u32                         tisn;
	u8                          tis_lst_sz;
	u8                          min_inline_mode;
};

static inline bool mlx5e_qid_get_ch_if_in_group(struct mlx5e_params *params,
						u16 qid,
						enum mlx5e_rq_group group,
						u16 *ix)
{
	int nch = params->num_channels;
	int ch = qid - nch * group;

	if (ch < 0 || ch >= nch)
		return false;

	*ix = ch;
	return true;
}

static inline void mlx5e_qid_get_ch_and_group(struct mlx5e_params *params,
					      u16 qid,
					      u16 *ix,
					      enum mlx5e_rq_group *group)
{
	u16 nch = params->num_channels;

	*ix = qid % nch;
	*group = qid / nch;
}

static inline bool mlx5e_qid_validate(const struct mlx5e_profile *profile,
				      struct mlx5e_params *params, u64 qid)
{
	return qid < params->num_channels * profile->rq_groups;
}

/* Parameter calculations */

void mlx5e_reset_tx_moderation(struct mlx5e_params *params, u8 cq_period_mode);
void mlx5e_reset_rx_moderation(struct mlx5e_params *params, u8 cq_period_mode);
void mlx5e_set_tx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode);
void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode);

bool slow_pci_heuristic(struct mlx5_core_dev *mdev);
bool mlx5e_striding_rq_possible(struct mlx5_core_dev *mdev, struct mlx5e_params *params);
void mlx5e_build_rq_params(struct mlx5_core_dev *mdev, struct mlx5e_params *params);
void mlx5e_set_rq_type(struct mlx5_core_dev *mdev, struct mlx5e_params *params);
void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev, struct mlx5e_params *params);

bool mlx5e_verify_rx_mpwqe_strides(struct mlx5_core_dev *mdev,
				   u8 log_stride_sz, u8 log_num_strides);
u16 mlx5e_get_linear_rq_headroom(struct mlx5e_params *params,
				 struct mlx5e_xsk_param *xsk);
u32 mlx5e_rx_get_min_frag_sz(struct mlx5e_params *params,
			     struct mlx5e_xsk_param *xsk);
u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params,
				struct mlx5e_xsk_param *xsk);
bool mlx5e_rx_is_linear_skb(struct mlx5e_params *params,
			    struct mlx5e_xsk_param *xsk);
bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
				  struct mlx5e_params *params,
				  struct mlx5e_xsk_param *xsk);
u8 mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params *params,
			       struct mlx5e_xsk_param *xsk);
u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev,
				   struct mlx5e_params *params,
				   struct mlx5e_xsk_param *xsk);
u8 mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev *mdev,
				   struct mlx5e_params *params,
				   struct mlx5e_xsk_param *xsk);
u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,
			  struct mlx5e_params *params,
			  struct mlx5e_xsk_param *xsk);
struct mlx5e_lro_param mlx5e_get_lro_param(struct mlx5e_params *params);

/* Build queue parameters */

void mlx5e_build_create_cq_param(struct mlx5e_create_cq_param *ccp, struct mlx5e_channel *c);
int mlx5e_build_rq_param(struct mlx5_core_dev *mdev,
			 struct mlx5e_params *params,
			 struct mlx5e_xsk_param *xsk,
			 u16 q_counter,
			 struct mlx5e_rq_param *param);
void mlx5e_build_drop_rq_param(struct mlx5_core_dev *mdev,
			       u16 q_counter,
			       struct mlx5e_rq_param *param);
void mlx5e_build_sq_param_common(struct mlx5_core_dev *mdev,
				 struct mlx5e_sq_param *param);
void mlx5e_build_sq_param(struct mlx5_core_dev *mdev,
			  struct mlx5e_params *params,
			  struct mlx5e_sq_param *param);
void mlx5e_build_tx_cq_param(struct mlx5_core_dev *mdev,
			     struct mlx5e_params *params,
			     struct mlx5e_cq_param *param);
void mlx5e_build_xdpsq_param(struct mlx5_core_dev *mdev,
			     struct mlx5e_params *params,
			     struct mlx5e_sq_param *param);
int mlx5e_build_channel_param(struct mlx5_core_dev *mdev,
			      struct mlx5e_params *params,
			      u16 q_counter,
			      struct mlx5e_channel_param *cparam);

u16 mlx5e_calc_sq_stop_room(struct mlx5_core_dev *mdev, struct mlx5e_params *params);
int mlx5e_validate_params(struct mlx5_core_dev *mdev, struct mlx5e_params *params);

#endif /* __MLX5_EN_PARAMS_H__ */