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 40 void 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 int user_prio, 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 << MLX4_RSS_QPC_FLAG_OFFSET); 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 if (user_prio >= 0) { 61 context->pri_path.sched_queue |= user_prio << 3; 62 context->pri_path.feup = 1 << 6; 63 } 64 context->pri_path.counter_index = 0xff; 65 context->cqn_send = cpu_to_be32(cqn); 66 context->cqn_recv = cpu_to_be32(cqn); 67 context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2); 68 } 69 70 71 int mlx4_en_map_buffer(struct mlx4_buf *buf) 72 { 73 struct page **pages; 74 int i; 75 76 if (BITS_PER_LONG == 64 || buf->nbufs == 1) 77 return 0; 78 79 pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL); 80 if (!pages) 81 return -ENOMEM; 82 83 for (i = 0; i < buf->nbufs; ++i) 84 pages[i] = virt_to_page(buf->page_list[i].buf); 85 86 buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL); 87 kfree(pages); 88 if (!buf->direct.buf) 89 return -ENOMEM; 90 91 return 0; 92 } 93 94 void mlx4_en_unmap_buffer(struct mlx4_buf *buf) 95 { 96 if (BITS_PER_LONG == 64 || buf->nbufs == 1) 97 return; 98 99 vunmap(buf->direct.buf); 100 } 101 102 void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event) 103 { 104 return; 105 } 106 107