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
mlx4_en_fill_qp_context(struct mlx4_en_priv * priv,int size,int stride,int is_tx,int rss,int qpn,int cqn,int user_prio,struct mlx4_qp_context * context)41 void 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 if_t 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 (!(if_getcapabilities(dev) & IFCAP_VLAN_HWCSUM))
80 context->param3 |= cpu_to_be32(1 << 30);
81 }
82
83
mlx4_en_map_buffer(struct mlx4_buf * buf)84 int 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
mlx4_en_unmap_buffer(struct mlx4_buf * buf)109 void 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
mlx4_en_sqp_event(struct mlx4_qp * qp,enum mlx4_event event)117 void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
118 {
119 return;
120 }
121
122