2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
34 #include <linux/kernel.h>
35 #include <linux/ethtool.h>
36 #include <linux/netdevice.h>
37 #include <linux/delay.h>
38 #include <linux/mlx4/driver.h>
43 static int mlx4_en_test_registers(struct mlx4_en_priv *priv)
45 return mlx4_cmd(priv->mdev->dev, 0, 0, 0, MLX4_CMD_HW_HEALTH_CHECK,
46 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
49 static int mlx4_en_test_loopback_xmit(struct mlx4_en_priv *priv)
53 unsigned char *packet;
54 unsigned int packet_size = MLX4_LOOPBACK_TEST_PAYLOAD;
59 /* build the pkt before xmit */
60 skb = netdev_alloc_skb(priv->dev, MLX4_LOOPBACK_TEST_PAYLOAD + ETH_HLEN + NET_IP_ALIGN);
64 skb_reserve(skb, NET_IP_ALIGN);
66 ethh = (struct ethhdr *)skb_put(skb, sizeof(struct ethhdr));
67 packet = (unsigned char *)skb_put(skb, packet_size);
68 memcpy(ethh->h_dest, priv->dev->dev_addr, ETH_ALEN);
69 eth_zero_addr(ethh->h_source);
70 ethh->h_proto = htons(ETH_P_ARP);
71 skb_set_mac_header(skb, 0);
72 for (i = 0; i < packet_size; ++i) /* fill our packet */
73 packet[i] = (unsigned char)(i & 0xff);
76 err = mlx4_en_xmit(skb, priv->dev);
80 static int mlx4_en_test_loopback(struct mlx4_en_priv *priv)
86 priv->loopback_ok = 0;
87 priv->validate_loopback = 1;
88 gro_enabled = priv->dev->features & NETIF_F_GRO;
90 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
91 priv->dev->features &= ~NETIF_F_GRO;
94 if (mlx4_en_test_loopback_xmit(priv)) {
95 en_err(priv, "Transmitting loopback packet failed\n");
96 goto mlx4_en_test_loopback_exit;
99 /* polling for result */
100 for (i = 0; i < MLX4_EN_LOOPBACK_RETRIES; ++i) {
101 msleep(MLX4_EN_LOOPBACK_TIMEOUT);
102 if (priv->loopback_ok) {
108 en_err(priv, "Loopback packet didn't arrive\n");
110 mlx4_en_test_loopback_exit:
112 priv->validate_loopback = 0;
115 priv->dev->features |= NETIF_F_GRO;
117 mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
121 static int mlx4_en_test_interrupts(struct mlx4_en_priv *priv)
123 struct mlx4_en_dev *mdev = priv->mdev;
127 err = mlx4_test_async(mdev->dev);
128 /* When not in MSI_X or slave, test only async */
129 if (!(mdev->dev->flags & MLX4_FLAG_MSI_X) || mlx4_is_slave(mdev->dev))
132 /* A loop over all completion vectors of current port,
133 * for each vector check whether it works by mapping command
134 * completions to that vector and performing a NOP command
136 for (i = 0; i < priv->rx_ring_num; i++) {
137 err = mlx4_test_interrupt(mdev->dev, priv->rx_cq[i]->vector);
145 static int mlx4_en_test_link(struct mlx4_en_priv *priv)
147 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
149 if (priv->port_state.link_state == 1)
155 static int mlx4_en_test_speed(struct mlx4_en_priv *priv)
158 if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
161 /* The device supports 100M, 1G, 10G, 20G, 40G and 56G speed */
162 if (priv->port_state.link_speed != SPEED_100 &&
163 priv->port_state.link_speed != SPEED_1000 &&
164 priv->port_state.link_speed != SPEED_10000 &&
165 priv->port_state.link_speed != SPEED_20000 &&
166 priv->port_state.link_speed != SPEED_40000 &&
167 priv->port_state.link_speed != SPEED_56000)
168 return priv->port_state.link_speed;
174 void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf)
176 struct mlx4_en_priv *priv = netdev_priv(dev);
179 memset(buf, 0, sizeof(u64) * MLX4_EN_NUM_SELF_TEST);
181 if (*flags & ETH_TEST_FL_OFFLINE) {
182 /* disable the interface */
183 carrier_ok = netif_carrier_ok(dev);
185 netif_carrier_off(dev);
186 /* Wait until all tx queues are empty.
187 * there should not be any additional incoming traffic
188 * since we turned the carrier off */
191 if (priv->mdev->dev->caps.flags &
192 MLX4_DEV_CAP_FLAG_UC_LOOPBACK) {
193 buf[3] = mlx4_en_test_registers(priv);
195 buf[4] = mlx4_en_test_loopback(priv);
199 netif_carrier_on(dev);
202 buf[0] = mlx4_en_test_interrupts(priv);
203 buf[1] = mlx4_en_test_link(priv);
204 buf[2] = mlx4_en_test_speed(priv);
206 for (i = 0; i < MLX4_EN_NUM_SELF_TEST; i++) {
208 *flags |= ETH_TEST_FL_FAILED;