en_resources.c revision ec693d47010e8302e61e0bdf3f47496c5610641a 
1/*
2 * Copyright (c) 2007 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 <linux/mlx4/qp.h>
37
38#include "mlx4_en.h"
39
40void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
41			     int is_tx, int rss, int qpn, int cqn,
42			     int user_prio, struct mlx4_qp_context *context)
43{
44	struct mlx4_en_dev *mdev = priv->mdev;
45	struct net_device *dev = priv->dev;
46
47	memset(context, 0, sizeof *context);
48	context->flags = cpu_to_be32(7 << 16 | rss << MLX4_RSS_QPC_FLAG_OFFSET);
49	context->pd = cpu_to_be32(mdev->priv_pdn);
50	context->mtu_msgmax = 0xff;
51	if (!is_tx && !rss)
52		context->rq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
53	if (is_tx)
54		context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
55	else
56		context->sq_size_stride = ilog2(TXBB_SIZE) - 4;
57	context->usr_page = cpu_to_be32(mdev->priv_uar.index);
58	context->local_qpn = cpu_to_be32(qpn);
59	context->pri_path.ackto = 1 & 0x07;
60	context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
61	if (user_prio >= 0) {
62		context->pri_path.sched_queue |= user_prio << 3;
63		context->pri_path.feup = 1 << 6;
64	}
65	context->pri_path.counter_index = 0xff;
66	context->cqn_send = cpu_to_be32(cqn);
67	context->cqn_recv = cpu_to_be32(cqn);
68	context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
69	if (!(dev->features & NETIF_F_HW_VLAN_CTAG_RX))
70		context->param3 |= cpu_to_be32(1 << 30);
71}
72
73
74int mlx4_en_map_buffer(struct mlx4_buf *buf)
75{
76	struct page **pages;
77	int i;
78
79	if (BITS_PER_LONG == 64 || buf->nbufs == 1)
80		return 0;
81
82	pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
83	if (!pages)
84		return -ENOMEM;
85
86	for (i = 0; i < buf->nbufs; ++i)
87		pages[i] = virt_to_page(buf->page_list[i].buf);
88
89	buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
90	kfree(pages);
91	if (!buf->direct.buf)
92		return -ENOMEM;
93
94	return 0;
95}
96
97void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
98{
99	if (BITS_PER_LONG == 64 || buf->nbufs == 1)
100		return;
101
102	vunmap(buf->direct.buf);
103}
104
105void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
106{
107    return;
108}
109
110