From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/net/ethernet/mellanox/mlx4/en_resources.c | 119 ++++++++++++++++++++++ 1 file changed, 119 insertions(+) create mode 100644 drivers/net/ethernet/mellanox/mlx4/en_resources.c (limited to 'drivers/net/ethernet/mellanox/mlx4/en_resources.c') diff --git a/drivers/net/ethernet/mellanox/mlx4/en_resources.c b/drivers/net/ethernet/mellanox/mlx4/en_resources.c new file mode 100644 index 000000000..34f2fdf4f --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx4/en_resources.c @@ -0,0 +1,119 @@ +/* + * 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 +#include +#include + +#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); + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP) + context->params2 |= MLX4_QP_BIT_FPP; + + } 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 = MLX4_FEUP_FORCE_ETH_UP; + } + 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 (!(dev->features & NETIF_F_HW_VLAN_CTAG_RX)) + context->param3 |= cpu_to_be32(1 << 30); + + if (!is_tx && !rss && + (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)) { + en_dbg(HW, priv, "Setting RX qp %x tunnel mode to RX tunneled & non-tunneled\n", qpn); + context->srqn = cpu_to_be32(7 << 28); /* this fills bits 30:28 */ + } +} + + +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); +} + +void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event) +{ + return; +} + -- cgit v1.2.3-54-g00ecf