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