[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx4 / en_selftest.c

/*
 * 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/kernel.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>
#include <linux/delay.h>
#include <linux/mlx4/driver.h>

#include "mlx4_en.h"


static int mlx4_en_test_registers(struct mlx4_en_priv *priv)
{
	return mlx4_cmd(priv->mdev->dev, 0, 0, 0, MLX4_CMD_HW_HEALTH_CHECK,
			MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
}

static int mlx4_en_test_loopback_xmit(struct mlx4_en_priv *priv)
{
	struct sk_buff *skb;
	struct ethhdr *ethh;
	unsigned char *packet;
	unsigned int packet_size = MLX4_LOOPBACK_TEST_PAYLOAD;
	unsigned int i;
	int err;


	/* build the pkt before xmit */
	skb = netdev_alloc_skb(priv->dev, MLX4_LOOPBACK_TEST_PAYLOAD + ETH_HLEN + NET_IP_ALIGN);
	if (!skb)
		return -ENOMEM;

	skb_reserve(skb, NET_IP_ALIGN);

	ethh = (struct ethhdr *)skb_put(skb, sizeof(struct ethhdr));
	packet	= (unsigned char *)skb_put(skb, packet_size);
	memcpy(ethh->h_dest, priv->dev->dev_addr, ETH_ALEN);
	memset(ethh->h_source, 0, ETH_ALEN);
	ethh->h_proto = htons(ETH_P_ARP);
	skb_set_mac_header(skb, 0);
	for (i = 0; i < packet_size; ++i)	/* fill our packet */
		packet[i] = (unsigned char)(i & 0xff);

	/* xmit the pkt */
	err = mlx4_en_xmit(skb, priv->dev);
	return err;
}

static int mlx4_en_test_loopback(struct mlx4_en_priv *priv)
{
	u32 loopback_ok = 0;
	int i;


        priv->loopback_ok = 0;
	priv->validate_loopback = 1;

	mlx4_en_update_loopback_state(priv->dev, priv->dev->features);

	/* xmit */
	if (mlx4_en_test_loopback_xmit(priv)) {
		en_err(priv, "Transmitting loopback packet failed\n");
		goto mlx4_en_test_loopback_exit;
	}

	/* polling for result */
	for (i = 0; i < MLX4_EN_LOOPBACK_RETRIES; ++i) {
		msleep(MLX4_EN_LOOPBACK_TIMEOUT);
		if (priv->loopback_ok) {
			loopback_ok = 1;
			break;
		}
	}
	if (!loopback_ok)
		en_err(priv, "Loopback packet didn't arrive\n");

mlx4_en_test_loopback_exit:

	priv->validate_loopback = 0;
	mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
	return !loopback_ok;
}


static int mlx4_en_test_link(struct mlx4_en_priv *priv)
{
	if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
		return -ENOMEM;
	if (priv->port_state.link_state == 1)
		return 0;
	else
		return 1;
}

static int mlx4_en_test_speed(struct mlx4_en_priv *priv)
{

	if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
		return -ENOMEM;

	/* The device currently only supports 10G speed */
	if (priv->port_state.link_speed != SPEED_10000)
		return priv->port_state.link_speed;
	return 0;
}


void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf)
{
	struct mlx4_en_priv *priv = netdev_priv(dev);
	struct mlx4_en_dev *mdev = priv->mdev;
	struct mlx4_en_tx_ring *tx_ring;
	int i, carrier_ok;

	memset(buf, 0, sizeof(u64) * MLX4_EN_NUM_SELF_TEST);

	if (*flags & ETH_TEST_FL_OFFLINE) {
		/* disable the interface */
		carrier_ok = netif_carrier_ok(dev);

		netif_carrier_off(dev);
retry_tx:
		/* Wait until all tx queues are empty.
		 * there should not be any additional incoming traffic
		 * since we turned the carrier off */
		msleep(200);
		for (i = 0; i < priv->tx_ring_num && carrier_ok; i++) {
			tx_ring = &priv->tx_ring[i];
			if (tx_ring->prod != (tx_ring->cons + tx_ring->last_nr_txbb))
				goto retry_tx;
		}

		if (priv->mdev->dev->caps.flags &
					MLX4_DEV_CAP_FLAG_UC_LOOPBACK) {
			buf[3] = mlx4_en_test_registers(priv);
			buf[4] = mlx4_en_test_loopback(priv);
		}

		if (carrier_ok)
			netif_carrier_on(dev);

	}
	buf[0] = mlx4_test_interrupts(mdev->dev);
	buf[1] = mlx4_en_test_link(priv);
	buf[2] = mlx4_en_test_speed(priv);

	for (i = 0; i < MLX4_EN_NUM_SELF_TEST; i++) {
		if (buf[i])
			*flags |= ETH_TEST_FL_FAILED;
	}
}
Commit	Line	Data
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,
f9baff50	46	MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
e7c1c2c4 YP	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);
720a43ef	61	if (!skb)
e7c1c2c4	62	return -ENOMEM;
720a43ef	63
e7c1c2c4 YP	64	skb_reserve(skb, NET_IP_ALIGN);
	65
	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	memset(ethh->h_source, 0, ETH_ALEN);
	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);
	74
	75	/* xmit the pkt */
	76	err = mlx4_en_xmit(skb, priv->dev);
	77	return err;
	78	}
	79
	80	static int mlx4_en_test_loopback(struct mlx4_en_priv *priv)
	81	{
	82	u32 loopback_ok = 0;
	83	int i;
	84
	85
	86	priv->loopback_ok = 0;
	87	priv->validate_loopback = 1;
	88
79aeaccd YB	89	mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
79aeaccd YB	90
e7c1c2c4 YP	91	/* xmit */
	92	if (mlx4_en_test_loopback_xmit(priv)) {
	93	en_err(priv, "Transmitting loopback packet failed\n");
	94	goto mlx4_en_test_loopback_exit;
	95	}
	96
	97	/* polling for result */
	98	for (i = 0; i < MLX4_EN_LOOPBACK_RETRIES; ++i) {
	99	msleep(MLX4_EN_LOOPBACK_TIMEOUT);
	100	if (priv->loopback_ok) {
	101	loopback_ok = 1;
	102	break;
	103	}
	104	}
	105	if (!loopback_ok)
	106	en_err(priv, "Loopback packet didn't arrive\n");
	107
	108	mlx4_en_test_loopback_exit:
	109
	110	priv->validate_loopback = 0;
79aeaccd	111	mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
807540ba	112	return !loopback_ok;
e7c1c2c4 YP	113	}
	114
	115
	116	static int mlx4_en_test_link(struct mlx4_en_priv *priv)
	117	{
	118	if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
	119	return -ENOMEM;
	120	if (priv->port_state.link_state == 1)
	121	return 0;
	122	else
	123	return 1;
	124	}
	125
	126	static int mlx4_en_test_speed(struct mlx4_en_priv *priv)
	127	{
	128
	129	if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
	130	return -ENOMEM;
	131
	132	/* The device currently only supports 10G speed */
	133	if (priv->port_state.link_speed != SPEED_10000)
	134	return priv->port_state.link_speed;
	135	return 0;
	136	}
	137
	138
	139	void mlx4_en_ex_selftest(struct net_device dev, u32 flags, u64 *buf)
	140	{
	141	struct mlx4_en_priv *priv = netdev_priv(dev);
	142	struct mlx4_en_dev *mdev = priv->mdev;
	143	struct mlx4_en_tx_ring *tx_ring;
	144	int i, carrier_ok;
	145
	146	memset(buf, 0, sizeof(u64) * MLX4_EN_NUM_SELF_TEST);
	147
	148	if (*flags & ETH_TEST_FL_OFFLINE) {
	149	/* disable the interface */
	150	carrier_ok = netif_carrier_ok(dev);
	151
	152	netif_carrier_off(dev);
	153	retry_tx:
25985edc	154	/* Wait until all tx queues are empty.
e7c1c2c4 YP	155	* there should not be any additional incoming traffic
	156	* since we turned the carrier off */
	157	msleep(200);
	158	for (i = 0; i < priv->tx_ring_num && carrier_ok; i++) {
	159	tx_ring = &priv->tx_ring[i];
	160	if (tx_ring->prod != (tx_ring->cons + tx_ring->last_nr_txbb))
	161	goto retry_tx;
	162	}
	163
ccf86321 OG	164	if (priv->mdev->dev->caps.flags &
ccf86321 OG	165	MLX4_DEV_CAP_FLAG_UC_LOOPBACK) {
e7c1c2c4 YP	166	buf[3] = mlx4_en_test_registers(priv);
	167	buf[4] = mlx4_en_test_loopback(priv);
	168	}
	169
	170	if (carrier_ok)
	171	netif_carrier_on(dev);
	172
	173	}
	174	buf[0] = mlx4_test_interrupts(mdev->dev);
	175	buf[1] = mlx4_en_test_link(priv);
	176	buf[2] = mlx4_en_test_speed(priv);
	177
	178	for (i = 0; i < MLX4_EN_NUM_SELF_TEST; i++) {
	179	if (buf[i])
	180	*flags \|= ETH_TEST_FL_FAILED;
	181	}
	182	}