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