Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / mellanox / mlx4 / en_resources.c

diff --git a/kernel/drivers/net/ethernet/mellanox/mlx4/en_resources.c b/kernel/drivers/net/ethernet/mellanox/mlx4/en_resources.c
new file mode 100644 (file)
index 0000000..34f2fdf
--- /dev/null
+++ b/kernel/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 <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);
+               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;
+}
+