154359Sroberto/* 2182007Sroberto * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 354359Sroberto * 4182007Sroberto * This software is available to you under a choice of one of two 554359Sroberto * licenses. You may choose to be licensed under the terms of the GNU 654359Sroberto * General Public License (GPL) Version 2, available from the file 754359Sroberto * COPYING in the main directory of this source tree, or the 854359Sroberto * OpenIB.org BSD license below: 954359Sroberto * 1054359Sroberto * Redistribution and use in source and binary forms, with or 1154359Sroberto * without modification, are permitted provided that the following 1254359Sroberto * conditions are met: 1354359Sroberto * 1454359Sroberto * - Redistributions of source code must retain the above 1554359Sroberto * copyright notice, this list of conditions and the following 1682498Sroberto * disclaimer. 1754359Sroberto * 1854359Sroberto * - Redistributions in binary form must reproduce the above 1954359Sroberto * copyright notice, this list of conditions and the following 2054359Sroberto * disclaimer in the documentation and/or other materials 2154359Sroberto * provided with the distribution. 2254359Sroberto * 2354359Sroberto * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 2454359Sroberto * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 2554359Sroberto * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 2654359Sroberto * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 2754359Sroberto * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 2854359Sroberto * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 2954359Sroberto * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 3054359Sroberto * SOFTWARE. 3154359Sroberto * 3254359Sroberto */ 33280849Scy 3454359Sroberto#include <linux/kernel.h> 3554359Sroberto#include <linux/ethtool.h> 3654359Sroberto#include <linux/netdevice.h> 3754359Sroberto#include <linux/delay.h> 3854359Sroberto#include <linux/mlx4/driver.h> 3954359Sroberto 4054359Sroberto#include "mlx4_en.h" 4154359Sroberto 4254359Sroberto 4354359Srobertostatic int mlx4_en_test_registers(struct mlx4_en_priv *priv) 4454359Sroberto{ 4554359Sroberto return mlx4_cmd(priv->mdev->dev, 0, 0, 0, MLX4_CMD_HW_HEALTH_CHECK, 4654359Sroberto MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); 4754359Sroberto} 4854359Sroberto 4954359Srobertostatic int mlx4_en_test_loopback_xmit(struct mlx4_en_priv *priv) 5054359Sroberto{ 5154359Sroberto struct sk_buff *skb; 5254359Sroberto struct ethhdr *ethh; 5354359Sroberto unsigned char *packet; 5454359Sroberto unsigned int packet_size = MLX4_LOOPBACK_TEST_PAYLOAD; 5554359Sroberto unsigned int i; 5654359Sroberto int err; 5754359Sroberto 5854359Sroberto 5954359Sroberto /* build the pkt before xmit */ 6054359Sroberto skb = netdev_alloc_skb(priv->dev, MLX4_LOOPBACK_TEST_PAYLOAD + ETH_HLEN + NET_IP_ALIGN); 6154359Sroberto if (!skb) 6254359Sroberto return -ENOMEM; 6354359Sroberto 6454359Sroberto skb_reserve(skb, NET_IP_ALIGN); 6554359Sroberto 6654359Sroberto ethh = skb_put(skb, sizeof(struct ethhdr)); 6754359Sroberto packet = skb_put(skb, packet_size); 6854359Sroberto memcpy(ethh->h_dest, priv->dev->dev_addr, ETH_ALEN); 6954359Sroberto eth_zero_addr(ethh->h_source); 7054359Sroberto ethh->h_proto = htons(ETH_P_ARP); 7154359Sroberto skb_reset_mac_header(skb); 7254359Sroberto for (i = 0; i < packet_size; ++i) /* fill our packet */ 7354359Sroberto packet[i] = (unsigned char)(i & 0xff); 7454359Sroberto 7554359Sroberto /* xmit the pkt */ 7654359Sroberto err = mlx4_en_xmit(skb, priv->dev); 77282408Scy return err; 78282408Scy} 79282408Scy 8054359Srobertostatic int mlx4_en_test_loopback(struct mlx4_en_priv *priv) 81282408Scy{ 8254359Sroberto u32 loopback_ok = 0; 8354359Sroberto int i; 8454359Sroberto 8554359Sroberto priv->loopback_ok = 0; 8654359Sroberto priv->validate_loopback = 1; 8754359Sroberto 8854359Sroberto mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 8954359Sroberto 9054359Sroberto /* xmit */ 9154359Sroberto if (mlx4_en_test_loopback_xmit(priv)) { 9254359Sroberto en_err(priv, "Transmitting loopback packet failed\n"); 9354359Sroberto goto mlx4_en_test_loopback_exit; 9454359Sroberto } 9554359Sroberto 9654359Sroberto /* polling for result */ 97280849Scy for (i = 0; i < MLX4_EN_LOOPBACK_RETRIES; ++i) { 9882498Sroberto msleep(MLX4_EN_LOOPBACK_TIMEOUT); 9954359Sroberto if (priv->loopback_ok) { 10082498Sroberto loopback_ok = 1; 10154359Sroberto break; 10254359Sroberto } 10354359Sroberto } 10454359Sroberto if (!loopback_ok) 10554359Sroberto en_err(priv, "Loopback packet didn't arrive\n"); 10654359Sroberto 10754359Srobertomlx4_en_test_loopback_exit: 10854359Sroberto 10954359Sroberto priv->validate_loopback = 0; 11054359Sroberto 11154359Sroberto mlx4_en_update_loopback_state(priv->dev, priv->dev->features); 11254359Sroberto return !loopback_ok; 11354359Sroberto} 11454359Sroberto 11554359Srobertostatic int mlx4_en_test_interrupts(struct mlx4_en_priv *priv) 11654359Sroberto{ 11754359Sroberto struct mlx4_en_dev *mdev = priv->mdev; 11854359Sroberto int err = 0; 11954359Sroberto int i = 0; 12054359Sroberto 12154359Sroberto err = mlx4_test_async(mdev->dev); 12254359Sroberto /* When not in MSI_X or slave, test only async */ 12354359Sroberto if (!(mdev->dev->flags & MLX4_FLAG_MSI_X) || mlx4_is_slave(mdev->dev)) 12454359Sroberto return err; 12554359Sroberto 12654359Sroberto /* A loop over all completion vectors of current port, 127282408Scy * for each vector check whether it works by mapping command 12854359Sroberto * completions to that vector and performing a NOP command 129282408Scy */ 13054359Sroberto for (i = 0; i < priv->rx_ring_num; i++) { 13154359Sroberto err = mlx4_test_interrupt(mdev->dev, priv->rx_cq[i]->vector); 13254359Sroberto if (err) 13354359Sroberto break; 134282408Scy } 13554359Sroberto 13654359Sroberto return err; 13754359Sroberto} 13854359Sroberto 13954359Srobertostatic int mlx4_en_test_link(struct mlx4_en_priv *priv) 140293423Sdelphij{ 14154359Sroberto if (mlx4_en_QUERY_PORT(priv->mdev, priv->port)) 14254359Sroberto return -ENOMEM; 14354359Sroberto if (priv->port_state.link_state == 1) 14454359Sroberto return 0; 14554359Sroberto else 14654359Sroberto return 1; 14754359Sroberto} 14854359Sroberto 14954359Srobertostatic int mlx4_en_test_speed(struct mlx4_en_priv *priv) 15054359Sroberto{ 15154359Sroberto 15254359Sroberto if (mlx4_en_QUERY_PORT(priv->mdev, priv->port)) 15354359Sroberto return -ENOMEM; 15454359Sroberto 15554359Sroberto /* The device supports 100M, 1G, 10G, 20G, 40G and 56G speed */ 15654359Sroberto if (priv->port_state.link_speed != SPEED_100 && 15754359Sroberto priv->port_state.link_speed != SPEED_1000 && 15854359Sroberto priv->port_state.link_speed != SPEED_10000 && 15954359Sroberto priv->port_state.link_speed != SPEED_20000 && 16054359Sroberto priv->port_state.link_speed != SPEED_40000 && 16154359Sroberto priv->port_state.link_speed != SPEED_56000) 16254359Sroberto return priv->port_state.link_speed; 16354359Sroberto 16454359Sroberto return 0; 16554359Sroberto} 16654359Sroberto 16754359Sroberto 16854359Srobertovoid mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf) 16954359Sroberto{ 17054359Sroberto struct mlx4_en_priv *priv = netdev_priv(dev); 17154359Sroberto int i, carrier_ok; 172282408Scy 17354359Sroberto memset(buf, 0, sizeof(u64) * MLX4_EN_NUM_SELF_TEST); 17454359Sroberto 17554359Sroberto if (*flags & ETH_TEST_FL_OFFLINE) { 17654359Sroberto /* disable the interface */ 17754359Sroberto carrier_ok = netif_carrier_ok(dev); 17854359Sroberto 17954359Sroberto netif_carrier_off(dev); 18054359Sroberto /* Wait until all tx queues are empty. 18154359Sroberto * there should not be any additional incoming traffic 18254359Sroberto * since we turned the carrier off */ 18354359Sroberto msleep(200); 18454359Sroberto 185 if (priv->mdev->dev->caps.flags & 186 MLX4_DEV_CAP_FLAG_UC_LOOPBACK) { 187 buf[3] = mlx4_en_test_registers(priv); 188 if (priv->port_up && dev->mtu >= MLX4_SELFTEST_LB_MIN_MTU) 189 buf[4] = mlx4_en_test_loopback(priv); 190 } 191 192 if (carrier_ok) 193 netif_carrier_on(dev); 194 195 } 196 buf[0] = mlx4_en_test_interrupts(priv); 197 buf[1] = mlx4_en_test_link(priv); 198 buf[2] = mlx4_en_test_speed(priv); 199 200 for (i = 0; i < MLX4_EN_NUM_SELF_TEST; i++) { 201 if (buf[i]) 202 *flags |= ETH_TEST_FL_FAILED; 203 } 204} 205