1/*
2 * Copyright (c) 2007, 2014 Mellanox Technologies. 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
34#include <linux/slab.h>
35#include <linux/vmalloc.h>
36#include <dev/mlx4/qp.h>
37
38#include "en.h"
39
40
41void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
42			     int is_tx, int rss, int qpn, int cqn,
43			     int user_prio, struct mlx4_qp_context *context)
44{
45	struct mlx4_en_dev *mdev = priv->mdev;
46	struct net_device *dev = priv->dev;
47
48	memset(context, 0, sizeof *context);
49	context->flags = cpu_to_be32(7 << 16 | rss << MLX4_RSS_QPC_FLAG_OFFSET);
50	context->pd = cpu_to_be32(mdev->priv_pdn);
51	context->mtu_msgmax = 0xff;
52	if (!is_tx && !rss)
53		context->rq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
54	if (is_tx)
55		context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
56	else
57		context->sq_size_stride = ilog2(TXBB_SIZE) - 4;
58	context->usr_page = cpu_to_be32(mdev->priv_uar.index);
59	context->local_qpn = cpu_to_be32(qpn);
60	context->pri_path.ackto = 1 & 0x07;
61	context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
62	if (user_prio >= 0) {
63		context->pri_path.sched_queue |= user_prio << 3;
64		context->pri_path.feup = 1 << 6;
65	}
66	context->pri_path.counter_index = (u8)(priv->counter_index);
67	if (!rss &&
68	    (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK) &&
69	    context->pri_path.counter_index != 0xFF) {
70		/* disable multicast loopback to qp with same counter */
71		context->pri_path.fl |= MLX4_FL_ETH_SRC_CHECK_MC_LB;
72		context->pri_path.vlan_control |=
73			MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER;
74	}
75
76	context->cqn_send = cpu_to_be32(cqn);
77	context->cqn_recv = cpu_to_be32(cqn);
78	context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
79	if (!(dev->if_capabilities & IFCAP_VLAN_HWCSUM))
80		context->param3 |= cpu_to_be32(1 << 30);
81}
82
83
84int mlx4_en_map_buffer(struct mlx4_buf *buf)
85{
86	struct page **pages;
87	int i;
88
89        // if nbufs == 1 - there is no need to vmap
90        // if buf->direct.buf is not NULL it means that vmap was already done by mlx4_alloc_buff
91	if (buf->direct.buf != NULL || buf->nbufs == 1)
92		return 0;
93
94	pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
95	if (!pages)
96		return -ENOMEM;
97
98	for (i = 0; i < buf->nbufs; ++i)
99		pages[i] = virt_to_page(buf->page_list[i].buf);
100
101	buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
102	kfree(pages);
103	if (!buf->direct.buf)
104		return -ENOMEM;
105
106	return 0;
107}
108
109void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
110{
111	if (BITS_PER_LONG == 64 || buf->nbufs == 1)
112		return;
113
114	vunmap(buf->direct.buf);
115}
116
117void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
118{
119    return;
120}
121
122