Release 4.11 drivers/net/ethernet/mellanox/mlx5/core/wq.h

Directory: drivers/net/ethernet/mellanox/mlx5/core
/*
 * Copyright (c) 2013-2015, Mellanox Technologies, Ltd.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __MLX5_WQ_H__

#define __MLX5_WQ_H__

#include <linux/mlx5/mlx5_ifc.h>


struct mlx5_wq_param {
	
int		linear;
	
int		buf_numa_node;
	
int		db_numa_node;
};


struct mlx5_wq_ctrl {
	
struct mlx5_core_dev	*mdev;
	
struct mlx5_buf		buf;
	
struct mlx5_db		db;
};


struct mlx5_frag_wq_ctrl {
	
struct mlx5_core_dev	*mdev;
	
struct mlx5_frag_buf	frag_buf;
	
struct mlx5_db		db;
};


struct mlx5_wq_cyc {
	
void			*buf;
	
__be32			*db;
	
u16			sz_m1;
	
u8			log_stride;
};


struct mlx5_cqwq {
	
struct mlx5_frag_buf	frag_buf;
	
__be32			*db;
	
u32			sz_m1;
	
u32			frag_sz_m1;
	
u32			cc; /* consumer counter */
	
u8			log_sz;
	
u8			log_stride;
	
u8			log_frag_strides;
};


struct mlx5_wq_ll {
	
void			*buf;
	
__be32			*db;
	
__be16			*tail_next;
	
u16			sz_m1;
	
u16			head;
	
u16			wqe_ctr;
	
u16			cur_sz;
	
u8			log_stride;
};

int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
		       void *wqc, struct mlx5_wq_cyc *wq,
		       struct mlx5_wq_ctrl *wq_ctrl);
u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq);

int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
		     void *cqc, struct mlx5_cqwq *wq,
		     struct mlx5_frag_wq_ctrl *wq_ctrl);
u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq);

int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
		      void *wqc, struct mlx5_wq_ll *wq,
		      struct mlx5_wq_ctrl *wq_ctrl);
u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq);

void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl);
void mlx5_cqwq_destroy(struct mlx5_frag_wq_ctrl *wq_ctrl);



static inline u16 mlx5_wq_cyc_ctr2ix(struct mlx5_wq_cyc *wq, u16 ctr)
{
	return ctr & wq->sz_m1;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 22 100.00% 1 100.00%
Total 22 100.00% 1 100.00%



static inline void *mlx5_wq_cyc_get_wqe(struct mlx5_wq_cyc *wq, u16 ix)
{
	return wq->buf + (ix << wq->log_stride);
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 29 100.00% 1 100.00%
Total 29 100.00% 1 100.00%



static inline int mlx5_wq_cyc_cc_bigger(u16 cc1, u16 cc2)
{
	int equal   = (cc1 == cc2);
	int smaller = 0x8000 & (cc1 - cc2);

	return !equal && !smaller;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 40 100.00% 1 100.00%
Total 40 100.00% 1 100.00%



static inline u32 mlx5_cqwq_get_ci(struct mlx5_cqwq *wq)
{
	return wq->cc & wq->sz_m1;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static inline void *mlx5_cqwq_get_wqe(struct mlx5_cqwq *wq, u32 ix)
{
	unsigned int frag = (ix >> wq->log_frag_strides);

	return wq->frag_buf.frags[frag].buf +
		((wq->frag_sz_m1 & ix) << wq->log_stride);
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 29 53.70% 1 50.00%
Tariq Toukan 25 46.30% 1 50.00%
Total 54 100.00% 2 100.00%



static inline u32 mlx5_cqwq_get_wrap_cnt(struct mlx5_cqwq *wq)
{
	return wq->cc >> wq->log_sz;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static inline void mlx5_cqwq_pop(struct mlx5_cqwq *wq)
{
	wq->cc++;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 17 100.00% 1 100.00%
Total 17 100.00% 1 100.00%



static inline void mlx5_cqwq_update_db_record(struct mlx5_cqwq *wq)
{
	*wq->db = cpu_to_be32(wq->cc & 0xffffff);
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 26 100.00% 1 100.00%
Total 26 100.00% 1 100.00%



static inline int mlx5_wq_ll_is_full(struct mlx5_wq_ll *wq)
{
	return wq->cur_sz == wq->sz_m1;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static inline int mlx5_wq_ll_is_empty(struct mlx5_wq_ll *wq)
{
	return !wq->cur_sz;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



static inline void *mlx5_wq_ll_get_wqe(struct mlx5_wq_ll *wq, u16 ix)
{
	return wq->buf + (ix << wq->log_stride);
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 29 100.00% 1 100.00%
Total 29 100.00% 1 100.00%



static inline void mlx5_wq_ll_push(struct mlx5_wq_ll *wq, u16 head_next)
{
	wq->head = head_next;
	wq->wqe_ctr++;
	wq->cur_sz++;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static inline void mlx5_wq_ll_pop(struct mlx5_wq_ll *wq, __be16 ix,
				  __be16 *next_tail_next)
{
	*wq->tail_next = ix;
	wq->tail_next = next_tail_next;
	wq->cur_sz--;
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 37 100.00% 1 100.00%
Total 37 100.00% 1 100.00%



static inline void mlx5_wq_ll_update_db_record(struct mlx5_wq_ll *wq)
{
	*wq->db = cpu_to_be32(wq->wqe_ctr);
}

Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%

#endif /* __MLX5_WQ_H__ */
Overall Contributors
Person Tokens Prop Commits CommitProp
Amir Vadai 599 90.08% 1 33.33%
Tariq Toukan 62 9.32% 1 33.33%
Saeed Mahameed 4 0.60% 1 33.33%
Total 665 100.00% 3 100.00%
Directory: drivers/net/ethernet/mellanox/mlx5/core

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.
Person	Tokens	Prop	Commits	CommitProp
Amir Vadai	22	100.00%	1	100.00%
Total	22	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/mellanox/mlx5/core/wq.h

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