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e7c1c2c4 YP |
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/kernel.h> | |
35 | #include <linux/ethtool.h> | |
36 | #include <linux/netdevice.h> | |
37 | #include <linux/delay.h> | |
38 | #include <linux/mlx4/driver.h> | |
39 | ||
40 | #include "mlx4_en.h" | |
41 | ||
42 | ||
43 | static int mlx4_en_test_registers(struct mlx4_en_priv *priv) | |
44 | { | |
45 | return mlx4_cmd(priv->mdev->dev, 0, 0, 0, MLX4_CMD_HW_HEALTH_CHECK, | |
46 | MLX4_CMD_TIME_CLASS_A); | |
47 | } | |
48 | ||
49 | static int mlx4_en_test_loopback_xmit(struct mlx4_en_priv *priv) | |
50 | { | |
51 | struct sk_buff *skb; | |
52 | struct ethhdr *ethh; | |
53 | unsigned char *packet; | |
54 | unsigned int packet_size = MLX4_LOOPBACK_TEST_PAYLOAD; | |
55 | unsigned int i; | |
56 | int err; | |
57 | ||
58 | ||
59 | /* build the pkt before xmit */ | |
60 | skb = netdev_alloc_skb(priv->dev, MLX4_LOOPBACK_TEST_PAYLOAD + ETH_HLEN + NET_IP_ALIGN); | |
61 | if (!skb) { | |
62 | en_err(priv, "-LOOPBACK_TEST_XMIT- failed to create skb for xmit\n"); | |
63 | return -ENOMEM; | |
64 | } | |
65 | skb_reserve(skb, NET_IP_ALIGN); | |
66 | ||
67 | ethh = (struct ethhdr *)skb_put(skb, sizeof(struct ethhdr)); | |
68 | packet = (unsigned char *)skb_put(skb, packet_size); | |
69 | memcpy(ethh->h_dest, priv->dev->dev_addr, ETH_ALEN); | |
70 | memset(ethh->h_source, 0, ETH_ALEN); | |
71 | ethh->h_proto = htons(ETH_P_ARP); | |
72 | skb_set_mac_header(skb, 0); | |
73 | for (i = 0; i < packet_size; ++i) /* fill our packet */ | |
74 | packet[i] = (unsigned char)(i & 0xff); | |
75 | ||
76 | /* xmit the pkt */ | |
77 | err = mlx4_en_xmit(skb, priv->dev); | |
78 | return err; | |
79 | } | |
80 | ||
81 | static int mlx4_en_test_loopback(struct mlx4_en_priv *priv) | |
82 | { | |
83 | u32 loopback_ok = 0; | |
84 | int i; | |
85 | ||
86 | ||
87 | priv->loopback_ok = 0; | |
88 | priv->validate_loopback = 1; | |
89 | ||
90 | /* xmit */ | |
91 | if (mlx4_en_test_loopback_xmit(priv)) { | |
92 | en_err(priv, "Transmitting loopback packet failed\n"); | |
93 | goto mlx4_en_test_loopback_exit; | |
94 | } | |
95 | ||
96 | /* polling for result */ | |
97 | for (i = 0; i < MLX4_EN_LOOPBACK_RETRIES; ++i) { | |
98 | msleep(MLX4_EN_LOOPBACK_TIMEOUT); | |
99 | if (priv->loopback_ok) { | |
100 | loopback_ok = 1; | |
101 | break; | |
102 | } | |
103 | } | |
104 | if (!loopback_ok) | |
105 | en_err(priv, "Loopback packet didn't arrive\n"); | |
106 | ||
107 | mlx4_en_test_loopback_exit: | |
108 | ||
109 | priv->validate_loopback = 0; | |
807540ba | 110 | return !loopback_ok; |
e7c1c2c4 YP |
111 | } |
112 | ||
113 | ||
114 | static int mlx4_en_test_link(struct mlx4_en_priv *priv) | |
115 | { | |
116 | if (mlx4_en_QUERY_PORT(priv->mdev, priv->port)) | |
117 | return -ENOMEM; | |
118 | if (priv->port_state.link_state == 1) | |
119 | return 0; | |
120 | else | |
121 | return 1; | |
122 | } | |
123 | ||
124 | static int mlx4_en_test_speed(struct mlx4_en_priv *priv) | |
125 | { | |
126 | ||
127 | if (mlx4_en_QUERY_PORT(priv->mdev, priv->port)) | |
128 | return -ENOMEM; | |
129 | ||
130 | /* The device currently only supports 10G speed */ | |
131 | if (priv->port_state.link_speed != SPEED_10000) | |
132 | return priv->port_state.link_speed; | |
133 | return 0; | |
134 | } | |
135 | ||
136 | ||
137 | void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf) | |
138 | { | |
139 | struct mlx4_en_priv *priv = netdev_priv(dev); | |
140 | struct mlx4_en_dev *mdev = priv->mdev; | |
141 | struct mlx4_en_tx_ring *tx_ring; | |
142 | int i, carrier_ok; | |
143 | ||
144 | memset(buf, 0, sizeof(u64) * MLX4_EN_NUM_SELF_TEST); | |
145 | ||
146 | if (*flags & ETH_TEST_FL_OFFLINE) { | |
147 | /* disable the interface */ | |
148 | carrier_ok = netif_carrier_ok(dev); | |
149 | ||
150 | netif_carrier_off(dev); | |
151 | retry_tx: | |
25985edc | 152 | /* Wait until all tx queues are empty. |
e7c1c2c4 YP |
153 | * there should not be any additional incoming traffic |
154 | * since we turned the carrier off */ | |
155 | msleep(200); | |
156 | for (i = 0; i < priv->tx_ring_num && carrier_ok; i++) { | |
157 | tx_ring = &priv->tx_ring[i]; | |
158 | if (tx_ring->prod != (tx_ring->cons + tx_ring->last_nr_txbb)) | |
159 | goto retry_tx; | |
160 | } | |
161 | ||
162 | if (priv->mdev->dev->caps.loopback_support){ | |
163 | buf[3] = mlx4_en_test_registers(priv); | |
164 | buf[4] = mlx4_en_test_loopback(priv); | |
165 | } | |
166 | ||
167 | if (carrier_ok) | |
168 | netif_carrier_on(dev); | |
169 | ||
170 | } | |
171 | buf[0] = mlx4_test_interrupts(mdev->dev); | |
172 | buf[1] = mlx4_en_test_link(priv); | |
173 | buf[2] = mlx4_en_test_speed(priv); | |
174 | ||
175 | for (i = 0; i < MLX4_EN_NUM_SELF_TEST; i++) { | |
176 | if (buf[i]) | |
177 | *flags |= ETH_TEST_FL_FAILED; | |
178 | } | |
179 | } |