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/*
* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/vmalloc.h>
#include <linux/mlx4/qp.h>
#include "mlx4_en.h"
void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
int is_tx, int rss, int qpn, int cqn, int srqn,
struct mlx4_qp_context *context)
{
struct mlx4_en_dev *mdev = priv->mdev;
memset(context, 0, sizeof *context);
context->flags = cpu_to_be32(7 << 16 | rss << 13);
context->pd = cpu_to_be32(mdev->priv_pdn);
context->mtu_msgmax = 0xff;
context->rq_size_stride = 0;
if (is_tx)
context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
else
context->sq_size_stride = 1;
context->usr_page = cpu_to_be32(mdev->priv_uar.index);
context->local_qpn = cpu_to_be32(qpn);
context->pri_path.ackto = 1 & 0x07;
context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
context->pri_path.counter_index = 0xff;
context->cqn_send = cpu_to_be32(cqn);
context->cqn_recv = cpu_to_be32(cqn);
context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
if (!rss)
context->srqn = cpu_to_be32(MLX4_EN_USE_SRQ | srqn);
}
int mlx4_en_map_buffer(struct mlx4_buf *buf)
{
struct page **pages;
int i;
if (BITS_PER_LONG == 64 || buf->nbufs == 1)
return 0;
pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
if (!pages)
return -ENOMEM;
for (i = 0; i < buf->nbufs; ++i)
pages[i] = virt_to_page(buf->page_list[i].buf);
buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
kfree(pages);
if (!buf->direct.buf)
return -ENOMEM;
return 0;
}
void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
{
if (BITS_PER_LONG == 64 || buf->nbufs == 1)
return;
vunmap(buf->direct.buf);
}
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