[linux-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"

static u32 wq_get_byte_sz(u8 log_sz, u8 log_stride)
{
	return ((u32)1 << log_sz) << 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)
{
	u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
	u8 log_wq_sz     = MLX5_GET(wq, wqc, log_wq_sz);
	struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
	int err;

	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;
	}

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

	err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
				       &wq_ctrl->buf, param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
		goto err_db_free;
	}

	mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
	wq->sz = mlx5_wq_cyc_get_size(wq);

	wq_ctrl->mdev = mdev;

	return 0;

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

	return err;
}

void mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides)
{
	size_t len;
	void *wqe;

	if (!net_ratelimit())
		return;

	nstrides = max_t(u8, nstrides, 1);

	len = nstrides << wq->fbc.log_stride;
	wqe = mlx5_wq_cyc_get_wqe(wq, ix);

	pr_info("WQE DUMP: WQ size %d WQ cur size %d, WQE index 0x%x, len: %zu\n",
		mlx5_wq_cyc_get_size(wq), wq->cur_sz, ix, len);
	print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, wqe, len, false);
}

void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq)
{
	wq->wqe_ctr = 0;
	wq->cur_sz = 0;
	mlx5_wq_cyc_update_db_record(wq);
}

int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
		      void *qpc, struct mlx5_wq_qp *wq,
		      struct mlx5_wq_ctrl *wq_ctrl)
{
	u8 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride) + 4;
	u8 log_rq_sz     = MLX5_GET(qpc, qpc, log_rq_size);
	u8 log_sq_stride = ilog2(MLX5_SEND_WQE_BB);
	u8 log_sq_sz     = MLX5_GET(qpc, qpc, log_sq_size);

	u32 rq_byte_size;
	int err;


	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_frag_buf_alloc_node(mdev,
				       wq_get_byte_sz(log_rq_sz, log_rq_stride) +
				       wq_get_byte_sz(log_sq_sz, log_sq_stride),
				       &wq_ctrl->buf, param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
		goto err_db_free;
	}

	mlx5_init_fbc(wq_ctrl->buf.frags, log_rq_stride, log_rq_sz, &wq->rq.fbc);

	rq_byte_size = wq_get_byte_sz(log_rq_sz, log_rq_stride);

	if (rq_byte_size < PAGE_SIZE) {
		/* SQ starts within the same page of the RQ */
		u16 sq_strides_offset = rq_byte_size / MLX5_SEND_WQE_BB;

		mlx5_init_fbc_offset(wq_ctrl->buf.frags,
				     log_sq_stride, log_sq_sz, sq_strides_offset,
				     &wq->sq.fbc);
	} else {
		u16 rq_npages = rq_byte_size >> PAGE_SHIFT;

		mlx5_init_fbc(wq_ctrl->buf.frags + rq_npages,
			      log_sq_stride, log_sq_sz, &wq->sq.fbc);
	}

	wq->rq.db  = &wq_ctrl->db.db[MLX5_RCV_DBR];
	wq->sq.db  = &wq_ctrl->db.db[MLX5_SND_DBR];

	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)
{
	/* CQE_STRIDE_128 and CQE_STRIDE_128_PAD both mean 128B stride */
	u8 log_wq_stride = MLX5_GET(cqc, cqc, cqe_sz) == CQE_STRIDE_64 ? 6 : 7;
	u8 log_wq_sz     = MLX5_GET(cqc, cqc, log_cq_size);
	int err;

	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;
	}

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

	err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
				       &wq_ctrl->buf,
				       param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n",
			       err);
		goto err_db_free;
	}

	mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, &wq->fbc);

	wq_ctrl->mdev = mdev;

	return 0;

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

	return err;
}

static void mlx5_wq_ll_init_list(struct mlx5_wq_ll *wq)
{
	struct mlx5_wqe_srq_next_seg *next_seg;
	int i;

	for (i = 0; i < wq->fbc.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;
}

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)
{
	u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
	u8 log_wq_sz     = MLX5_GET(wq, wqc, log_wq_sz);
	struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
	int err;

	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;
	}

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

	err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
				       &wq_ctrl->buf, param->buf_numa_node);
	if (err) {
		mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
		goto err_db_free;
	}

	mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);

	mlx5_wq_ll_init_list(wq);
	wq_ctrl->mdev = mdev;

	return 0;

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

	return err;
}

void mlx5_wq_ll_reset(struct mlx5_wq_ll *wq)
{
	wq->head = 0;
	wq->wqe_ctr = 0;
	wq->cur_sz = 0;
	mlx5_wq_ll_init_list(wq);
	mlx5_wq_ll_update_db_record(wq);
}

void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
{
	mlx5_frag_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
4972e6fa	37	static u32 wq_get_byte_sz(u8 log_sz, u8 log_stride)
e586b3b0	38	{
4972e6fa	39	return ((u32)1 << log_sz) << log_stride;
e586b3b0 AV	40	}
	41
	42	int mlx5_wq_cyc_create(struct mlx5_core_dev mdev, struct mlx5_wq_param param,
	43	void wqc, struct mlx5_wq_cyc wq,
	44	struct mlx5_wq_ctrl *wq_ctrl)
	45	{
4972e6fa TT	46	u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
4972e6fa TT	47	u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz);
3a2f7033	48	struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
e586b3b0 AV	49	int err;
e586b3b0 AV	50
311c7c71	51	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
e586b3b0	52	if (err) {
f299a02d	53	mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
e586b3b0 AV	54	return err;
	55	}
	56
4972e6fa TT	57	wq->db = wq_ctrl->db.db;
	58
	59	err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
3a2f7033	60	&wq_ctrl->buf, param->buf_numa_node);
e586b3b0	61	if (err) {
3a2f7033	62	mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
e586b3b0 AV	63	goto err_db_free;
	64	}
	65
4972e6fa TT	66	mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
4972e6fa TT	67	wq->sz = mlx5_wq_cyc_get_size(wq);
e586b3b0 AV	68
	69	wq_ctrl->mdev = mdev;
	70
	71	return 0;
	72
	73	err_db_free:
	74	mlx5_db_free(mdev, &wq_ctrl->db);
	75
	76	return err;
	77	}
	78
130c7b46 SM	79	void mlx5_wq_cyc_wqe_dump(struct mlx5_wq_cyc *wq, u16 ix, u8 nstrides)
	80	{
	81	size_t len;
	82	void *wqe;
	83
	84	if (!net_ratelimit())
	85	return;
	86
	87	nstrides = max_t(u8, nstrides, 1);
	88
	89	len = nstrides << wq->fbc.log_stride;
	90	wqe = mlx5_wq_cyc_get_wqe(wq, ix);
	91
ca9c74ae	92	pr_info("WQE DUMP: WQ size %d WQ cur size %d, WQE index 0x%x, len: %zu\n",
130c7b46 SM	93	mlx5_wq_cyc_get_size(wq), wq->cur_sz, ix, len);
	94	print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, wqe, len, false);
	95	}
	96
5ee090ed AL	97	void mlx5_wq_cyc_reset(struct mlx5_wq_cyc *wq)
	98	{
	99	wq->wqe_ctr = 0;
	100	wq->cur_sz = 0;
	101	mlx5_wq_cyc_update_db_record(wq);
	102	}
	103
3f2b7edd IT	104	int mlx5_wq_qp_create(struct mlx5_core_dev mdev, struct mlx5_wq_param param,
	105	void qpc, struct mlx5_wq_qp wq,
	106	struct mlx5_wq_ctrl *wq_ctrl)
	107	{
4972e6fa TT	108	u8 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride) + 4;
	109	u8 log_rq_sz = MLX5_GET(qpc, qpc, log_rq_size);
	110	u8 log_sq_stride = ilog2(MLX5_SEND_WQE_BB);
	111	u8 log_sq_sz = MLX5_GET(qpc, qpc, log_sq_size);
3f2b7edd	112
4972e6fa TT	113	u32 rq_byte_size;
4972e6fa TT	114	int err;
d7037ad7	115
d7037ad7	116
3f2b7edd IT	117
	118	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
	119	if (err) {
	120	mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
	121	return err;
	122	}
	123
4972e6fa TT	124	err = mlx5_frag_buf_alloc_node(mdev,
	125	wq_get_byte_sz(log_rq_sz, log_rq_stride) +
	126	wq_get_byte_sz(log_sq_sz, log_sq_stride),
3a2f7033	127	&wq_ctrl->buf, param->buf_numa_node);
3f2b7edd	128	if (err) {
3a2f7033	129	mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
3f2b7edd IT	130	goto err_db_free;
	131	}
	132
4972e6fa TT	133	mlx5_init_fbc(wq_ctrl->buf.frags, log_rq_stride, log_rq_sz, &wq->rq.fbc);
	134
	135	rq_byte_size = wq_get_byte_sz(log_rq_sz, log_rq_stride);
	136
	137	if (rq_byte_size < PAGE_SIZE) {
	138	/* SQ starts within the same page of the RQ */
	139	u16 sq_strides_offset = rq_byte_size / MLX5_SEND_WQE_BB;
	140
	141	mlx5_init_fbc_offset(wq_ctrl->buf.frags,
	142	log_sq_stride, log_sq_sz, sq_strides_offset,
	143	&wq->sq.fbc);
	144	} else {
	145	u16 rq_npages = rq_byte_size >> PAGE_SHIFT;
	146
	147	mlx5_init_fbc(wq_ctrl->buf.frags + rq_npages,
	148	log_sq_stride, log_sq_sz, &wq->sq.fbc);
	149	}
3a2f7033	150
3f2b7edd IT	151	wq->rq.db = &wq_ctrl->db.db[MLX5_RCV_DBR];
	152	wq->sq.db = &wq_ctrl->db.db[MLX5_SND_DBR];
	153
	154	wq_ctrl->mdev = mdev;
	155
	156	return 0;
	157
	158	err_db_free:
	159	mlx5_db_free(mdev, &wq_ctrl->db);
	160
	161	return err;
	162	}
	163
e586b3b0 AV	164	int mlx5_cqwq_create(struct mlx5_core_dev mdev, struct mlx5_wq_param param,
e586b3b0 AV	165	void cqc, struct mlx5_cqwq wq,
3a2f7033	166	struct mlx5_wq_ctrl *wq_ctrl)
e586b3b0	167	{
939de57d DJ	168	/* CQE_STRIDE_128 and CQE_STRIDE_128_PAD both mean 128B stride */
939de57d DJ	169	u8 log_wq_stride = MLX5_GET(cqc, cqc, cqe_sz) == CQE_STRIDE_64 ? 6 : 7;
4972e6fa	170	u8 log_wq_sz = MLX5_GET(cqc, cqc, log_cq_size);
e586b3b0 AV	171	int err;
e586b3b0 AV	172
311c7c71	173	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
e586b3b0	174	if (err) {
f299a02d	175	mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
e586b3b0 AV	176	return err;
	177	}
	178
4972e6fa TT	179	wq->db = wq_ctrl->db.db;
	180
	181	err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
3a2f7033	182	&wq_ctrl->buf,
1c1b5228	183	param->buf_numa_node);
e586b3b0	184	if (err) {
1c1b5228 TT	185	mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n",
1c1b5228 TT	186	err);
e586b3b0 AV	187	goto err_db_free;
	188	}
	189
4972e6fa	190	mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, &wq->fbc);
e586b3b0 AV	191
	192	wq_ctrl->mdev = mdev;
	193
	194	return 0;
	195
	196	err_db_free:
	197	mlx5_db_free(mdev, &wq_ctrl->db);
	198
	199	return err;
	200	}
	201
5ee090ed AL	202	static void mlx5_wq_ll_init_list(struct mlx5_wq_ll *wq)
	203	{
	204	struct mlx5_wqe_srq_next_seg *next_seg;
	205	int i;
	206
	207	for (i = 0; i < wq->fbc.sz_m1; i++) {
	208	next_seg = mlx5_wq_ll_get_wqe(wq, i);
	209	next_seg->next_wqe_index = cpu_to_be16(i + 1);
	210	}
	211	next_seg = mlx5_wq_ll_get_wqe(wq, i);
	212	wq->tail_next = &next_seg->next_wqe_index;
	213	}
	214
e586b3b0 AV	215	int mlx5_wq_ll_create(struct mlx5_core_dev mdev, struct mlx5_wq_param param,
	216	void wqc, struct mlx5_wq_ll wq,
	217	struct mlx5_wq_ctrl *wq_ctrl)
	218	{
4972e6fa TT	219	u8 log_wq_stride = MLX5_GET(wq, wqc, log_wq_stride);
4972e6fa TT	220	u8 log_wq_sz = MLX5_GET(wq, wqc, log_wq_sz);
3a2f7033	221	struct mlx5_frag_buf_ctrl *fbc = &wq->fbc;
e586b3b0	222	int err;
e586b3b0	223
311c7c71	224	err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node);
e586b3b0	225	if (err) {
f299a02d	226	mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err);
e586b3b0 AV	227	return err;
	228	}
	229
4972e6fa TT	230	wq->db = wq_ctrl->db.db;
	231
	232	err = mlx5_frag_buf_alloc_node(mdev, wq_get_byte_sz(log_wq_sz, log_wq_stride),
3a2f7033	233	&wq_ctrl->buf, param->buf_numa_node);
e586b3b0	234	if (err) {
3a2f7033	235	mlx5_core_warn(mdev, "mlx5_frag_buf_alloc_node() failed, %d\n", err);
e586b3b0 AV	236	goto err_db_free;
	237	}
	238
4972e6fa	239	mlx5_init_fbc(wq_ctrl->buf.frags, log_wq_stride, log_wq_sz, fbc);
e586b3b0	240
5ee090ed	241	mlx5_wq_ll_init_list(wq);
e586b3b0 AV	242	wq_ctrl->mdev = mdev;
	243
	244	return 0;
	245
	246	err_db_free:
	247	mlx5_db_free(mdev, &wq_ctrl->db);
	248
	249	return err;
	250	}
	251
5ee090ed AL	252	void mlx5_wq_ll_reset(struct mlx5_wq_ll *wq)
	253	{
	254	wq->head = 0;
	255	wq->wqe_ctr = 0;
	256	wq->cur_sz = 0;
	257	mlx5_wq_ll_init_list(wq);
	258	mlx5_wq_ll_update_db_record(wq);
	259	}
	260
e586b3b0 AV	261	void mlx5_wq_destroy(struct mlx5_wq_ctrl *wq_ctrl)
e586b3b0 AV	262	{
3a2f7033	263	mlx5_frag_buf_free(wq_ctrl->mdev, &wq_ctrl->buf);
e586b3b0 AV	264	mlx5_db_free(wq_ctrl->mdev, &wq_ctrl->db);
e586b3b0 AV	265	}
1c1b5228	266