[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / wq.c

/*
 * 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.
 */

#include <linux/mlx5/driver.h>
#include "wq.h"
#include "mlx5_core.h"

u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq)
{
	return (u32)wq->sz_m1 + 1;
}

u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq)
{
	return wq->sz_m1 + 1;
}

u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq)
{
	return (u32)wq->sz_m1 + 1;
}

static u32 mlx5_wq_cyc_get_byte_size(struct mlx5_wq_cyc *wq)
{
	return mlx5_wq_cyc_get_size(wq) << wq->log_stride;
}

static u32 mlx5_cqwq_get_byte_size(struct mlx5_cqwq *wq)
{
	return mlx5_cqwq_get_size(wq) << wq->log_stride;
}

static u32 mlx5_wq_ll_get_byte_size(struct mlx5_wq_ll *wq)
{
	return mlx5_wq_ll_get_size(wq) << wq->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)
{
	int err;

	wq->log_stride = MLX5_GET(wq, wqc, log_wq_stride);
	wq->sz_m1 = (1 << MLX5_GET(wq, wqc, log_wq_sz)) - 1;

	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
		return err;
	}

	err = mlx5_buf_alloc_node(mdev, mlx5_wq_cyc_get_byte_size(wq),
				  &wq_ctrl->buf, param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
		goto err_db_free;
	}

	wq->buf = wq_ctrl->buf.direct.buf;
	wq->db  = wq_ctrl->db.db;

	wq_ctrl->mdev = mdev;

	return 0;

err_db_free:
	mlx5_db_free(mdev, &wq_ctrl->db);

	return err;
}

int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
		     void *cqc, struct mlx5_cqwq *wq,
		     struct mlx5_wq_ctrl *wq_ctrl)
{
	int err;

	wq->log_stride = 6 + MLX5_GET(cqc, cqc, cqe_sz);
	wq->log_sz = MLX5_GET(cqc, cqc, log_cq_size);
	wq->sz_m1 = (1 << wq->log_sz) - 1;

	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
		return err;
	}

	err = mlx5_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq),
				  &wq_ctrl->buf, param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
		goto err_db_free;
	}

	wq->buf = wq_ctrl->buf.direct.buf;
	wq->db  = wq_ctrl->db.db;

	wq_ctrl->mdev = mdev;

	return 0;

err_db_free:
	mlx5_db_free(mdev, &wq_ctrl->db);

	return err;
}

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)
{
	struct mlx5_wqe_srq_next_seg *next_seg;
	int err;
	int i;

	wq->log_stride = MLX5_GET(wq, wqc, log_wq_stride);
	wq->sz_m1 = (1 << MLX5_GET(wq, wqc, log_wq_sz)) - 1;

	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
		return err;
	}

	err = mlx5_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
				  &wq_ctrl->buf, param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
		goto err_db_free;
	}

	wq->buf = wq_ctrl->buf.direct.buf;
	wq->db  = wq_ctrl->db.db;

	for (i = 0; i < wq->sz_m1; i++) {
		next_seg = mlx5_wq_ll_get_wqe(wq, i);
		next_seg->next_wqe_index = cpu_to_be16(i + 1);
	}
	next_seg = mlx5_wq_ll_get_wqe(wq, i);
	wq->tail_next = &next_seg->next_wqe_index;

	wq_ctrl->mdev = mdev;

	return 0;

err_db_free:
	mlx5_db_free(mdev, &wq_ctrl->db);

	return err;
}

void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
{
	mlx5_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
	mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);
}
Commit	Line	Data
e586b3b0 AV	1	/*
	2	* Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#include <linux/mlx5/driver.h>
	34	#include "wq.h"
	35	#include "mlx5_core.h"
	36
	37	u32 mlx5_wq_cyc_get_size(struct mlx5_wq_cyc *wq)
	38	{
	39	return (u32)wq->sz_m1 + 1;
	40	}
	41
	42	u32 mlx5_cqwq_get_size(struct mlx5_cqwq *wq)
	43	{
	44	return wq->sz_m1 + 1;
	45	}
	46
	47	u32 mlx5_wq_ll_get_size(struct mlx5_wq_ll *wq)
	48	{
	49	return (u32)wq->sz_m1 + 1;
	50	}
	51
	52	static u32 mlx5_wq_cyc_get_byte_size(struct mlx5_wq_cyc *wq)
	53	{
	54	return mlx5_wq_cyc_get_size(wq) << wq->log_stride;
	55	}
	56
	57	static u32 mlx5_cqwq_get_byte_size(struct mlx5_cqwq *wq)
	58	{
	59	return mlx5_cqwq_get_size(wq) << wq->log_stride;
	60	}
	61
	62	static u32 mlx5_wq_ll_get_byte_size(struct mlx5_wq_ll *wq)
	63	{
	64	return mlx5_wq_ll_get_size(wq) << wq->log_stride;
65	}
66
67	int mlx5_wq_cyc_create(struct mlx5_core_dev mdev, struct mlx5_wq_param param,
68	void wqc, struct mlx5_wq_cyc wq,
69	struct mlx5_wq_ctrl *wq_ctrl)
70	{
71	int err;
72
73	wq->log_stride = MLX5_GET(wq, wqc, log_wq_stride);
74	wq->sz_m1 = (1 << MLX5_GET(wq, wqc, log_wq_sz)) - 1;
75
311c7c71	76	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
e586b3b0	77	if (err) {
f299a02d	78	mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
e586b3b0 AV	79	return err;
	80	}
	81
311c7c71 SM	82	err = mlx5_buf_alloc_node(mdev, mlx5_wq_cyc_get_byte_size(wq),
311c7c71 SM	83	&wq_ctrl->buf, param->buf_numa_node);
e586b3b0	84	if (err) {
f299a02d	85	mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
e586b3b0 AV	86	goto err_db_free;
	87	}
	88
	89	wq->buf = wq_ctrl->buf.direct.buf;
	90	wq->db = wq_ctrl->db.db;
	91
	92	wq_ctrl->mdev = mdev;
	93
	94	return 0;
	95
	96	err_db_free:
	97	mlx5_db_free(mdev, &wq_ctrl->db);
	98
	99	return err;
	100	}
	101
	102	int mlx5_cqwq_create(struct mlx5_core_dev mdev, struct mlx5_wq_param param,
	103	void cqc, struct mlx5_cqwq wq,
	104	struct mlx5_wq_ctrl *wq_ctrl)
	105	{
	106	int err;
	107
	108	wq->log_stride = 6 + MLX5_GET(cqc, cqc, cqe_sz);
	109	wq->log_sz = MLX5_GET(cqc, cqc, log_cq_size);
	110	wq->sz_m1 = (1 << wq->log_sz) - 1;
	111
311c7c71	112	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
e586b3b0	113	if (err) {
f299a02d	114	mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
e586b3b0 AV	115	return err;
	116	}
	117
311c7c71 SM	118	err = mlx5_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq),
311c7c71 SM	119	&wq_ctrl->buf, param->buf_numa_node);
e586b3b0	120	if (err) {
f299a02d	121	mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
e586b3b0 AV	122	goto err_db_free;
	123	}
	124
	125	wq->buf = wq_ctrl->buf.direct.buf;
	126	wq->db = wq_ctrl->db.db;
	127
	128	wq_ctrl->mdev = mdev;
	129
	130	return 0;
	131
	132	err_db_free:
	133	mlx5_db_free(mdev, &wq_ctrl->db);
	134
	135	return err;
	136	}
	137
	138	int mlx5_wq_ll_create(struct mlx5_core_dev mdev, struct mlx5_wq_param param,
	139	void wqc, struct mlx5_wq_ll wq,
	140	struct mlx5_wq_ctrl *wq_ctrl)
	141	{
	142	struct mlx5_wqe_srq_next_seg *next_seg;
	143	int err;
	144	int i;
	145
	146	wq->log_stride = MLX5_GET(wq, wqc, log_wq_stride);
	147	wq->sz_m1 = (1 << MLX5_GET(wq, wqc, log_wq_sz)) - 1;
	148
311c7c71	149	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
e586b3b0	150	if (err) {
f299a02d	151	mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
e586b3b0 AV	152	return err;
	153	}
	154
f299a02d WSH	155	err = mlx5_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq),
f299a02d WSH	156	&wq_ctrl->buf, param->buf_numa_node);
e586b3b0	157	if (err) {
f299a02d	158	mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err);
e586b3b0 AV	159	goto err_db_free;
	160	}
	161
	162	wq->buf = wq_ctrl->buf.direct.buf;
	163	wq->db = wq_ctrl->db.db;
	164
	165	for (i = 0; i < wq->sz_m1; i++) {
	166	next_seg = mlx5_wq_ll_get_wqe(wq, i);
	167	next_seg->next_wqe_index = cpu_to_be16(i + 1);
	168	}
	169	next_seg = mlx5_wq_ll_get_wqe(wq, i);
	170	wq->tail_next = &next_seg->next_wqe_index;
	171
	172	wq_ctrl->mdev = mdev;
	173
	174	return 0;
	175
	176	err_db_free:
	177	mlx5_db_free(mdev, &wq_ctrl->db);
	178
	179	return err;
	180	}
	181
	182	void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
	183	{
	184	mlx5_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
	185	mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);
	186	}