text: /*
   * Copyright (c) 2007, 2014 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/slab.h>
  #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 user_prio, struct mlx4_qp_context *context)
  {
  	struct mlx4_en_dev *mdev = priv->mdev;
  	struct net_device *dev = priv->dev;
  
  	memset(context, 0, sizeof *context);
  	context->flags = cpu_to_be32(7 << 16 | rss << MLX4_RSS_QPC_FLAG_OFFSET);
  	context->pd = cpu_to_be32(mdev->priv_pdn);
  	context->mtu_msgmax = 0xff;
  	if (!is_tx && !rss)
  		context->rq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
  	if (is_tx)
  		context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
  	else
  		context->sq_size_stride = ilog2(TXBB_SIZE) - 4;
  	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;
  	if (user_prio >= 0) {
  		context->pri_path.sched_queue |= user_prio << 3;
  		context->pri_path.feup = 1 << 6;
  	}
  	context->pri_path.counter_index = (u8)(priv->counter_index);
  	if (!rss &&
  	    (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK) &&
  	    context->pri_path.counter_index != 0xFF) {
  		/* disable multicast loopback to qp with same counter */
  		context->pri_path.fl |= MLX4_FL_ETH_SRC_CHECK_MC_LB;
  		context->pri_path.vlan_control |=
  			MLX4_VLAN_CTRL_ETH_SRC_CHECK_IF_COUNTER;
  	}
  
  	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 (!(dev->if_capabilities & IFCAP_VLAN_HWCSUM))
  		context->param3 |= cpu_to_be32(1 << 30);
  }
  
  
  int mlx4_en_map_buffer(struct mlx4_buf *buf)
  {
  	struct page **pages;
  	int i;
  
          // if nbufs == 1 - there is no need to vmap 
          // if buf->direct.buf is not NULL it means that vmap was already done by mlx4_alloc_buff
  	if (buf->direct.buf != NULL || 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);
  }
  
  void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
  {
      return;
  }
  
  