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mellanox
mlx4
en_resources.c
Go to the documentation of this file.
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/*
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* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <linux/slab.h>
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#include <
linux/vmalloc.h
>
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#include <
linux/mlx4/qp.h
>
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#include "
mlx4_en.h
"
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void
mlx4_en_fill_qp_context
(
struct
mlx4_en_priv
*
priv
,
int
size
,
int
stride,
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int
is_tx,
int
rss,
int
qpn,
int
cqn
,
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int
user_prio,
struct
mlx4_qp_context
*
context
)
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{
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struct
mlx4_en_dev
*mdev = priv->
mdev
;
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memset
(context, 0,
sizeof
*context);
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context->
flags
=
cpu_to_be32
(7 << 16 | rss <<
MLX4_RSS_QPC_FLAG_OFFSET
);
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context->
pd
=
cpu_to_be32
(mdev->
priv_pdn
);
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context->
mtu_msgmax
= 0xff;
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if
(!is_tx && !rss)
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context->
rq_size_stride
=
ilog2
(size) << 3 | (
ilog2
(stride) - 4);
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if
(is_tx)
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context->
sq_size_stride
=
ilog2
(size) << 3 | (
ilog2
(stride) - 4);
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else
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context->
sq_size_stride
=
ilog2
(
TXBB_SIZE
) - 4;
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context->
usr_page
=
cpu_to_be32
(mdev->
priv_uar
.index);
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context->
local_qpn
=
cpu_to_be32
(qpn);
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context->
pri_path
.ackto = 1 & 0x07;
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context->
pri_path
.sched_queue = 0x83 | (priv->
port
- 1) << 6;
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if
(user_prio >= 0) {
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context->
pri_path
.sched_queue |= user_prio << 3;
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context->
pri_path
.feup = 1 << 6;
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}
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context->
pri_path
.counter_index = 0xff;
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context->
cqn_send
=
cpu_to_be32
(cqn);
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context->
cqn_recv
=
cpu_to_be32
(cqn);
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context->
db_rec_addr
=
cpu_to_be64
(priv->
res
.db.dma << 2);
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}
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int
mlx4_en_map_buffer
(
struct
mlx4_buf
*
buf
)
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{
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struct
page
**
pages
;
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int
i
;
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if
(
BITS_PER_LONG
== 64 || buf->
nbufs
== 1)
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return
0;
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pages =
kmalloc
(
sizeof
*pages * buf->
nbufs
,
GFP_KERNEL
);
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if
(!pages)
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return
-
ENOMEM
;
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for
(i = 0; i < buf->
nbufs
; ++
i
)
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pages[i] =
virt_to_page
(buf->
page_list
[i].buf);
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buf->
direct
.buf =
vmap
(pages, buf->
nbufs
,
VM_MAP
,
PAGE_KERNEL
);
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kfree
(pages);
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if
(!buf->
direct
.buf)
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return
-
ENOMEM
;
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return
0;
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}
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void
mlx4_en_unmap_buffer
(
struct
mlx4_buf
*
buf
)
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{
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if
(
BITS_PER_LONG
== 64 || buf->
nbufs
== 1)
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return
;
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vunmap
(buf->
direct
.buf);
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}
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void
mlx4_en_sqp_event
(
struct
mlx4_qp
*qp,
enum
mlx4_event
event
)
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{
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return
;
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}
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