tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/vmalloc.h>
35#include <linux/mlx4/qp.h>
36
37#include "mlx4_en.h"
38
39void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
40 int is_tx, int rss, int qpn, int cqn,
41 struct mlx4_qp_context *context)
42{
43 struct mlx4_en_dev *mdev = priv->mdev;
44
45 memset(context, 0, sizeof *context);
46 context->flags = cpu_to_be32(7 << 16 | rss << 13);
47 context->pd = cpu_to_be32(mdev->priv_pdn);
48 context->mtu_msgmax = 0xff;
49 if (!is_tx && !rss)
50 context->rq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
51 if (is_tx)
52 context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
53 else
54 context->sq_size_stride = ilog2(TXBB_SIZE) - 4;
55 context->usr_page = cpu_to_be32(mdev->priv_uar.index);
56 context->local_qpn = cpu_to_be32(qpn);
57 context->pri_path.ackto = 1 & 0x07;
58 context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
59 context->pri_path.counter_index = 0xff;
60 context->cqn_send = cpu_to_be32(cqn);
61 context->cqn_recv = cpu_to_be32(cqn);
62 context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
63}
64
65
66int mlx4_en_map_buffer(struct mlx4_buf *buf)
67{
68 struct page **pages;
69 int i;
70
71 if (BITS_PER_LONG == 64 || buf->nbufs == 1)
72 return 0;
73
74 pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
75 if (!pages)
76 return -ENOMEM;
77
78 for (i = 0; i < buf->nbufs; ++i)
79 pages[i] = virt_to_page(buf->page_list[i].buf);
80
81 buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
82 kfree(pages);
83 if (!buf->direct.buf)
84 return -ENOMEM;
85
86 return 0;
87}
88
89void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
90{
91 if (BITS_PER_LONG == 64 || buf->nbufs == 1)
92 return;
93
94 vunmap(buf->direct.buf);
95}
96
97void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
98{
99 return;
100}
101