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
 40void 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 << 13);
 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
 67int 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
 90void 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
 98void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
 99{
100    return;
101}
102