[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx4 / en_main.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/cpumask.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/slab.h>

#include <linux/mlx4/driver.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/cmd.h>

#include "mlx4_en.h"

MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION);

static const char mlx4_en_version[] =
	DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
	DRV_VERSION "\n";

#define MLX4_EN_PARM_INT(X, def_val, desc) \
	static unsigned int X = def_val;\
	module_param(X , uint, 0444); \
	MODULE_PARM_DESC(X, desc);


/*
 * Device scope module parameters
 */

/* Enable RSS UDP traffic */
MLX4_EN_PARM_INT(udp_rss, 1,
		 "Enable RSS for incoming UDP traffic or disabled (0)");

/* Priority pausing */
MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
			   " Per priority bit mask");
MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
			   " Per priority bit mask");

MLX4_EN_PARM_INT(inline_thold, MAX_INLINE,
		 "Threshold for using inline data (range: 17-104, default: 104)");

#define MAX_PFC_TX     0xff
#define MAX_PFC_RX     0xff

void en_print(const char *level, const struct mlx4_en_priv *priv,
	      const char *format, ...)
{
	va_list args;
	struct va_format vaf;

	va_start(args, format);

	vaf.fmt = format;
	vaf.va = &args;
	if (priv->registered)
		printk("%s%s: %s: %pV",
		       level, DRV_NAME, priv->dev->name, &vaf);
	else
		printk("%s%s: %s: Port %d: %pV",
		       level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
		       priv->port, &vaf);
	va_end(args);
}

void mlx4_en_update_loopback_state(struct net_device *dev,
				   netdev_features_t features)
{
	struct mlx4_en_priv *priv = netdev_priv(dev);

	if (features & NETIF_F_LOOPBACK)
		priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
	else
		priv->ctrl_flags &= cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);

	priv->flags &= ~(MLX4_EN_FLAG_RX_FILTER_NEEDED|
			MLX4_EN_FLAG_ENABLE_HW_LOOPBACK);

	/* Drop the packet if SRIOV is not enabled
	 * and not performing the selftest or flb disabled
	 */
	if (mlx4_is_mfunc(priv->mdev->dev) &&
	    !(features & NETIF_F_LOOPBACK) && !priv->validate_loopback)
		priv->flags |= MLX4_EN_FLAG_RX_FILTER_NEEDED;

	/* Set dmac in Tx WQE if we are in SRIOV mode or if loopback selftest
	 * is requested
	 */
	if (mlx4_is_mfunc(priv->mdev->dev) || priv->validate_loopback)
		priv->flags |= MLX4_EN_FLAG_ENABLE_HW_LOOPBACK;

	mutex_lock(&priv->mdev->state_lock);
	if ((priv->mdev->dev->caps.flags2 &
	     MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB) &&
	    priv->rss_map.indir_qp && priv->rss_map.indir_qp->qpn) {
		int i;
		int err = 0;
		int loopback = !!(features & NETIF_F_LOOPBACK);

		for (i = 0; i < priv->rx_ring_num; i++) {
			int ret;

			ret = mlx4_en_change_mcast_lb(priv,
						      &priv->rss_map.qps[i],
						      loopback);
			if (!err)
				err = ret;
		}
		if (err)
			mlx4_warn(priv->mdev, "failed to change mcast loopback\n");
	}
	mutex_unlock(&priv->mdev->state_lock);
}

static void mlx4_en_get_profile(struct mlx4_en_dev *mdev)
{
	struct mlx4_en_profile *params = &mdev->profile;
	int i;

	params->udp_rss = udp_rss;
	params->max_num_tx_rings_p_up = mlx4_low_memory_profile() ?
		MLX4_EN_MIN_TX_RING_P_UP :
		min_t(int, num_online_cpus(), MLX4_EN_MAX_TX_RING_P_UP);

	if (params->udp_rss && !(mdev->dev->caps.flags
					& MLX4_DEV_CAP_FLAG_UDP_RSS)) {
		mlx4_warn(mdev, "UDP RSS is not supported on this device\n");
		params->udp_rss = 0;
	}
	for (i = 1; i <= MLX4_MAX_PORTS; i++) {
		params->prof[i].rx_pause = !(pfcrx || pfctx);
		params->prof[i].rx_ppp = pfcrx;
		params->prof[i].tx_pause = !(pfcrx || pfctx);
		params->prof[i].tx_ppp = pfctx;
		if (mlx4_low_memory_profile()) {
			params->prof[i].tx_ring_size = MLX4_EN_MIN_TX_SIZE;
			params->prof[i].rx_ring_size = MLX4_EN_MIN_RX_SIZE;
		} else {
			params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
			params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
		}
		params->prof[i].num_up = MLX4_EN_NUM_UP_LOW;
		params->prof[i].num_tx_rings_p_up = params->max_num_tx_rings_p_up;
		params->prof[i].tx_ring_num[TX] = params->max_num_tx_rings_p_up *
			params->prof[i].num_up;
		params->prof[i].rss_rings = 0;
		params->prof[i].inline_thold = inline_thold;
	}
}

static int mlx4_en_event(struct notifier_block *this, unsigned long event,
			 void *param)
{
	struct mlx4_en_dev *mdev =
		container_of(this, struct mlx4_en_dev, mlx_nb);
	struct mlx4_dev *dev = mdev->dev;
	struct mlx4_en_priv *priv;
	int port;

	switch (event) {
	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
	case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
	case MLX4_DEV_EVENT_SLAVE_INIT:
	case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
		break;
	default:
		port = *(int *)param;
		break;
	}

	switch (event) {
	case MLX4_DEV_EVENT_PORT_UP:
	case MLX4_DEV_EVENT_PORT_DOWN:
		if (!mdev->pndev[port])
			return NOTIFY_DONE;
		priv = netdev_priv(mdev->pndev[port]);
		/* To prevent races, we poll the link state in a separate
		  task rather than changing it here */
		priv->link_state = event;
		queue_work(mdev->workqueue, &priv->linkstate_task);
		break;

	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
		mlx4_err(mdev, "Internal error detected, restarting device\n");
		break;

	case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
	case MLX4_DEV_EVENT_SLAVE_INIT:
	case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
		break;
	default:
		if (port < 1 || port > dev->caps.num_ports ||
		    !mdev->pndev[port])
			return NOTIFY_DONE;
		mlx4_warn(mdev, "Unhandled event %d for port %d\n", (int)event,
			  port);
	}

	return NOTIFY_DONE;
}

static void mlx4_en_remove(struct auxiliary_device *adev)
{
	struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
	struct mlx4_dev *dev = madev->mdev;
	struct mlx4_en_dev *mdev = auxiliary_get_drvdata(adev);
	int i;

	mlx4_unregister_event_notifier(dev, &mdev->mlx_nb);

	mutex_lock(&mdev->state_lock);
	mdev->device_up = false;
	mutex_unlock(&mdev->state_lock);

	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
		if (mdev->pndev[i])
			mlx4_en_destroy_netdev(mdev->pndev[i]);

	destroy_workqueue(mdev->workqueue);
	(void) mlx4_mr_free(dev, &mdev->mr);
	iounmap(mdev->uar_map);
	mlx4_uar_free(dev, &mdev->priv_uar);
	mlx4_pd_free(dev, mdev->priv_pdn);
	if (mdev->netdev_nb.notifier_call)
		unregister_netdevice_notifier(&mdev->netdev_nb);
	kfree(mdev);
}

static int mlx4_en_probe(struct auxiliary_device *adev,
			 const struct auxiliary_device_id *id)
{
	struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
	struct mlx4_dev *dev = madev->mdev;
	struct mlx4_en_dev *mdev;
	int err, i;

	printk_once(KERN_INFO "%s", mlx4_en_version);

	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
	if (!mdev) {
		err = -ENOMEM;
		goto err_free_res;
	}

	err = mlx4_pd_alloc(dev, &mdev->priv_pdn);
	if (err)
		goto err_free_dev;

	err = mlx4_uar_alloc(dev, &mdev->priv_uar);
	if (err)
		goto err_pd;

	mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
				PAGE_SIZE);
	if (!mdev->uar_map) {
		err = -ENOMEM;
		goto err_uar;
	}
	spin_lock_init(&mdev->uar_lock);

	mdev->dev = dev;
	mdev->dma_device = &dev->persist->pdev->dev;
	mdev->pdev = dev->persist->pdev;
	mdev->device_up = false;

	mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
	if (!mdev->LSO_support)
		mlx4_warn(mdev, "LSO not supported, please upgrade to later FW version to enable LSO\n");

	err = mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
			    MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, 0, 0,
			    &mdev->mr);
	if (err) {
		mlx4_err(mdev, "Failed allocating memory region\n");
		goto err_map;
	}
	err = mlx4_mr_enable(mdev->dev, &mdev->mr);
	if (err) {
		mlx4_err(mdev, "Failed enabling memory region\n");
		goto err_mr;
	}

	/* Build device profile according to supplied module parameters */
	mlx4_en_get_profile(mdev);

	/* Configure which ports to start according to module parameters */
	mdev->port_cnt = 0;
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
		mdev->port_cnt++;

	/* Set default number of RX rings*/
	mlx4_en_set_num_rx_rings(mdev);

	/* Create our own workqueue for reset/multicast tasks
	 * Note: we cannot use the shared workqueue because of deadlocks caused
	 *       by the rtnl lock */
	mdev->workqueue = create_singlethread_workqueue("mlx4_en");
	if (!mdev->workqueue) {
		err = -ENOMEM;
		goto err_mr;
	}

	/* At this stage all non-port specific tasks are complete:
	 * mark the card state as up */
	mutex_init(&mdev->state_lock);
	mdev->device_up = true;

	/* register mlx4 core notifier */
	mdev->mlx_nb.notifier_call = mlx4_en_event;
	err = mlx4_register_event_notifier(dev, &mdev->mlx_nb);
	WARN(err, "failed to register mlx4 event notifier (%d)", err);

	/* Setup ports */

	/* Create a netdev for each port */
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
		mlx4_info(mdev, "Activating port:%d\n", i);
		if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
			mdev->pndev[i] = NULL;
	}

	/* register netdev notifier */
	mdev->netdev_nb.notifier_call = mlx4_en_netdev_event;
	if (register_netdevice_notifier(&mdev->netdev_nb)) {
		mdev->netdev_nb.notifier_call = NULL;
		mlx4_err(mdev, "Failed to create netdev notifier\n");
	}

	auxiliary_set_drvdata(adev, mdev);
	return 0;

err_mr:
	(void) mlx4_mr_free(dev, &mdev->mr);
err_map:
	if (mdev->uar_map)
		iounmap(mdev->uar_map);
err_uar:
	mlx4_uar_free(dev, &mdev->priv_uar);
err_pd:
	mlx4_pd_free(dev, mdev->priv_pdn);
err_free_dev:
	kfree(mdev);
err_free_res:
	return err;
}

static const struct auxiliary_device_id mlx4_en_id_table[] = {
	{ .name = MLX4_ADEV_NAME ".eth" },
	{},
};

MODULE_DEVICE_TABLE(auxiliary, mlx4_en_id_table);

static struct mlx4_adrv mlx4_en_adrv = {
	.adrv = {
		.name	= "eth",
		.probe	= mlx4_en_probe,
		.remove	= mlx4_en_remove,
		.id_table = mlx4_en_id_table,
	},
	.protocol	= MLX4_PROT_ETH,
};

static void mlx4_en_verify_params(void)
{
	if (pfctx > MAX_PFC_TX) {
		pr_warn("mlx4_en: WARNING: illegal module parameter pfctx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n",
			pfctx, MAX_PFC_TX);
		pfctx = 0;
	}

	if (pfcrx > MAX_PFC_RX) {
		pr_warn("mlx4_en: WARNING: illegal module parameter pfcrx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n",
			pfcrx, MAX_PFC_RX);
		pfcrx = 0;
	}

	if (inline_thold < MIN_PKT_LEN || inline_thold > MAX_INLINE) {
		pr_warn("mlx4_en: WARNING: illegal module parameter inline_thold %d - should be in range %d-%d, will be changed to default (%d)\n",
			inline_thold, MIN_PKT_LEN, MAX_INLINE, MAX_INLINE);
		inline_thold = MAX_INLINE;
	}
}

static int __init mlx4_en_init(void)
{
	mlx4_en_verify_params();
	mlx4_en_init_ptys2ethtool_map();

	return mlx4_register_auxiliary_driver(&mlx4_en_adrv);
}

static void __exit mlx4_en_cleanup(void)
{
	mlx4_unregister_auxiliary_driver(&mlx4_en_adrv);
}

module_init(mlx4_en_init);
module_exit(mlx4_en_cleanup);
Commit	Line	Data
c27a02cd 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/cpumask.h>
	35	#include <linux/module.h>
	36	#include <linux/delay.h>
	37	#include <linux/netdevice.h>
5a0e3ad6	38	#include <linux/slab.h>
c27a02cd YP	39
	40	#include <linux/mlx4/driver.h>
	41	#include <linux/mlx4/device.h>
	42	#include <linux/mlx4/cmd.h>
	43
	44	#include "mlx4_en.h"
	45
	46	MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
	47	MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
	48	MODULE_LICENSE("Dual BSD/GPL");
808df6a2	49	MODULE_VERSION(DRV_VERSION);
c27a02cd YP	50
	51	static const char mlx4_en_version[] =
	52	DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
808df6a2	53	DRV_VERSION "\n";
c27a02cd	54
a2b28737 YP	55	#define MLX4_EN_PARM_INT(X, def_val, desc) \
	56	static unsigned int X = def_val;\
	57	module_param(X , uint, 0444); \
	58	MODULE_PARM_DESC(X, desc);
	59
	60
	61	/*
	62	* Device scope module parameters
	63	*/
	64
0533943c YP	65	/* Enable RSS UDP traffic */
0533943c YP	66	MLX4_EN_PARM_INT(udp_rss, 1,
d82603c6	67	"Enable RSS for incoming UDP traffic or disabled (0)");
a2b28737	68
a2b28737 YP	69	/* Priority pausing */
	70	MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
	71	" Per priority bit mask");
	72	MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
	73	" Per priority bit mask");
	74
b97b33a3 EE	75	MLX4_EN_PARM_INT(inline_thold, MAX_INLINE,
	76	"Threshold for using inline data (range: 17-104, default: 104)");
	77
	78	#define MAX_PFC_TX 0xff
	79	#define MAX_PFC_RX 0xff
	80
0c87b29c JP	81	void en_print(const char level, const struct mlx4_en_priv priv,
0c87b29c JP	82	const char *format, ...)
0a645e80 JP	83	{
	84	va_list args;
	85	struct va_format vaf;
0a645e80 JP	86
	87	va_start(args, format);
	88
	89	vaf.fmt = format;
	90	vaf.va = &args;
	91	if (priv->registered)
0c87b29c JP	92	printk("%s%s: %s: %pV",
0c87b29c JP	93	level, DRV_NAME, priv->dev->name, &vaf);
0a645e80	94	else
0c87b29c JP	95	printk("%s%s: %s: Port %d: %pV",
	96	level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
	97	priv->port, &vaf);
0a645e80	98	va_end(args);
0a645e80 JP	99	}
0a645e80 JP	100
79aeaccd YB	101	void mlx4_en_update_loopback_state(struct net_device *dev,
	102	netdev_features_t features)
	103	{
	104	struct mlx4_en_priv *priv = netdev_priv(dev);
	105
241a08c3 IS	106	if (features & NETIF_F_LOOPBACK)
	107	priv->ctrl_flags \|= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
	108	else
	109	priv->ctrl_flags &= cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
	110
79aeaccd YB	111	priv->flags &= ~(MLX4_EN_FLAG_RX_FILTER_NEEDED\|
	112	MLX4_EN_FLAG_ENABLE_HW_LOOPBACK);
	113
	114	/* Drop the packet if SRIOV is not enabled
	115	* and not performing the selftest or flb disabled
	116	*/
	117	if (mlx4_is_mfunc(priv->mdev->dev) &&
	118	!(features & NETIF_F_LOOPBACK) && !priv->validate_loopback)
	119	priv->flags \|= MLX4_EN_FLAG_RX_FILTER_NEEDED;
	120
	121	/* Set dmac in Tx WQE if we are in SRIOV mode or if loopback selftest
	122	* is requested
	123	*/
	124	if (mlx4_is_mfunc(priv->mdev->dev) \|\| priv->validate_loopback)
	125	priv->flags \|= MLX4_EN_FLAG_ENABLE_HW_LOOPBACK;
74194fb9 MG	126
74194fb9 MG	127	mutex_lock(&priv->mdev->state_lock);
4931c6ef SM	128	if ((priv->mdev->dev->caps.flags2 &
	129	MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB) &&
	130	priv->rss_map.indir_qp && priv->rss_map.indir_qp->qpn) {
74194fb9 MG	131	int i;
	132	int err = 0;
	133	int loopback = !!(features & NETIF_F_LOOPBACK);
	134
	135	for (i = 0; i < priv->rx_ring_num; i++) {
	136	int ret;
	137
	138	ret = mlx4_en_change_mcast_lb(priv,
	139	&priv->rss_map.qps[i],
	140	loopback);
	141	if (!err)
	142	err = ret;
	143	}
	144	if (err)
	145	mlx4_warn(priv->mdev, "failed to change mcast loopback\n");
	146	}
	147	mutex_unlock(&priv->mdev->state_lock);
79aeaccd YB	148	}
79aeaccd YB	149
f575a02e	150	static void mlx4_en_get_profile(struct mlx4_en_dev *mdev)
a2b28737 YP	151	{
	152	struct mlx4_en_profile *params = &mdev->profile;
	153	int i;
	154
0533943c	155	params->udp_rss = udp_rss;
7e1dc5e9	156	params->max_num_tx_rings_p_up = mlx4_low_memory_profile() ?
ea1c1af1 AV	157	MLX4_EN_MIN_TX_RING_P_UP :
	158	min_t(int, num_online_cpus(), MLX4_EN_MAX_TX_RING_P_UP);
	159
ccf86321 OG	160	if (params->udp_rss && !(mdev->dev->caps.flags
ccf86321 OG	161	& MLX4_DEV_CAP_FLAG_UDP_RSS)) {
1a91de28	162	mlx4_warn(mdev, "UDP RSS is not supported on this device\n");
0533943c YP	163	params->udp_rss = 0;
0533943c YP	164	}
a2b28737	165	for (i = 1; i <= MLX4_MAX_PORTS; i++) {
6e8814ce	166	params->prof[i].rx_pause = !(pfcrx \|\| pfctx);
a2b28737	167	params->prof[i].rx_ppp = pfcrx;
6e8814ce	168	params->prof[i].tx_pause = !(pfcrx \|\| pfctx);
a2b28737	169	params->prof[i].tx_ppp = pfctx;
27055454 AH	170	if (mlx4_low_memory_profile()) {
	171	params->prof[i].tx_ring_size = MLX4_EN_MIN_TX_SIZE;
	172	params->prof[i].rx_ring_size = MLX4_EN_MIN_RX_SIZE;
	173	} else {
	174	params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
	175	params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
	176	}
ec327f7a	177	params->prof[i].num_up = MLX4_EN_NUM_UP_LOW;
7e1dc5e9 IK	178	params->prof[i].num_tx_rings_p_up = params->max_num_tx_rings_p_up;
7e1dc5e9 IK	179	params->prof[i].tx_ring_num[TX] = params->max_num_tx_rings_p_up *
f21ad614	180	params->prof[i].num_up;
93d3e367	181	params->prof[i].rss_rings = 0;
b97b33a3	182	params->prof[i].inline_thold = inline_thold;
a2b28737	183	}
a2b28737 YP	184	}
a2b28737 YP	185
73d68002 PP	186	static int mlx4_en_event(struct notifier_block *this, unsigned long event,
73d68002 PP	187	void *param)
c27a02cd	188	{
73d68002 PP	189	struct mlx4_en_dev *mdev =
	190	container_of(this, struct mlx4_en_dev, mlx_nb);
	191	struct mlx4_dev *dev = mdev->dev;
c27a02cd	192	struct mlx4_en_priv *priv;
7ba189ac PP	193	int port;
	194
	195	switch (event) {
	196	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
	197	case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
	198	case MLX4_DEV_EVENT_SLAVE_INIT:
	199	case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
	200	break;
	201	default:
	202	port = (int )param;
	203	break;
	204	}
c27a02cd	205
c27a02cd YP	206	switch (event) {
	207	case MLX4_DEV_EVENT_PORT_UP:
	208	case MLX4_DEV_EVENT_PORT_DOWN:
13bf58b7	209	if (!mdev->pndev[port])
73d68002	210	return NOTIFY_DONE;
13bf58b7	211	priv = netdev_priv(mdev->pndev[port]);
c27a02cd YP	212	/* To prevent races, we poll the link state in a separate
	213	task rather than changing it here */
	214	priv->link_state = event;
	215	queue_work(mdev->workqueue, &priv->linkstate_task);
	216	break;
	217
	218	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
	219	mlx4_err(mdev, "Internal error detected, restarting device\n");
	220	break;
	221
7ba189ac	222	case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
e4b59a1c EE	223	case MLX4_DEV_EVENT_SLAVE_INIT:
	224	case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
	225	break;
c27a02cd	226	default:
13bf58b7 JM	227	if (port < 1 \|\| port > dev->caps.num_ports \|\|
13bf58b7 JM	228	!mdev->pndev[port])
73d68002 PP	229	return NOTIFY_DONE;
73d68002 PP	230	mlx4_warn(mdev, "Unhandled event %d for port %d\n", (int)event,
7ba189ac	231	port);
c27a02cd	232	}
73d68002 PP	233
73d68002 PP	234	return NOTIFY_DONE;
c27a02cd YP	235	}
c27a02cd YP	236
eb93ae49	237	static void mlx4_en_remove(struct auxiliary_device *adev)
c27a02cd	238	{
eb93ae49 PP	239	struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
	240	struct mlx4_dev *dev = madev->mdev;
	241	struct mlx4_en_dev *mdev = auxiliary_get_drvdata(adev);
c27a02cd YP	242	int i;
c27a02cd YP	243
73d68002 PP	244	mlx4_unregister_event_notifier(dev, &mdev->mlx_nb);
73d68002 PP	245
c27a02cd YP	246	mutex_lock(&mdev->state_lock);
	247	mdev->device_up = false;
	248	mutex_unlock(&mdev->state_lock);
	249
	250	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	251	if (mdev->pndev[i])
	252	mlx4_en_destroy_netdev(mdev->pndev[i]);
	253
c27a02cd	254	destroy_workqueue(mdev->workqueue);
61083720	255	(void) mlx4_mr_free(dev, &mdev->mr);
7398af40	256	iounmap(mdev->uar_map);
c27a02cd YP	257	mlx4_uar_free(dev, &mdev->priv_uar);
c27a02cd YP	258	mlx4_pd_free(dev, mdev->priv_pdn);
ef5617e3 PP	259	if (mdev->netdev_nb.notifier_call)
ef5617e3 PP	260	unregister_netdevice_notifier(&mdev->netdev_nb);
c27a02cd YP	261	kfree(mdev);
	262	}
	263
eb93ae49 PP	264	static int mlx4_en_probe(struct auxiliary_device *adev,
eb93ae49 PP	265	const struct auxiliary_device_id *id)
c27a02cd	266	{
eb93ae49 PP	267	struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
eb93ae49 PP	268	struct mlx4_dev *dev = madev->mdev;
c27a02cd	269	struct mlx4_en_dev *mdev;
73d68002	270	int err, i;
c27a02cd	271
0a645e80	272	printk_once(KERN_INFO "%s", mlx4_en_version);
c27a02cd	273
b2adaca9	274	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
eb93ae49 PP	275	if (!mdev) {
eb93ae49 PP	276	err = -ENOMEM;
c27a02cd	277	goto err_free_res;
eb93ae49	278	}
c27a02cd	279
eb93ae49 PP	280	err = mlx4_pd_alloc(dev, &mdev->priv_pdn);
eb93ae49 PP	281	if (err)
c27a02cd YP	282	goto err_free_dev;
c27a02cd YP	283
eb93ae49 PP	284	err = mlx4_uar_alloc(dev, &mdev->priv_uar);
eb93ae49 PP	285	if (err)
c27a02cd YP	286	goto err_pd;
c27a02cd YP	287
4979d18f RD	288	mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
4979d18f RD	289	PAGE_SIZE);
eb93ae49 PP	290	if (!mdev->uar_map) {
eb93ae49 PP	291	err = -ENOMEM;
c27a02cd	292	goto err_uar;
eb93ae49	293	}
c27a02cd YP	294	spin_lock_init(&mdev->uar_lock);
	295
	296	mdev->dev = dev;
872bf2fb YH	297	mdev->dma_device = &dev->persist->pdev->dev;
872bf2fb YH	298	mdev->pdev = dev->persist->pdev;
c27a02cd YP	299	mdev->device_up = false;
	300
	301	mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
	302	if (!mdev->LSO_support)
1a91de28	303	mlx4_warn(mdev, "LSO not supported, please upgrade to later FW version to enable LSO\n");
c27a02cd	304
eb93ae49 PP	305	err = mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
	306	MLX4_PERM_LOCAL_WRITE \| MLX4_PERM_LOCAL_READ, 0, 0,
	307	&mdev->mr);
	308	if (err) {
c27a02cd	309	mlx4_err(mdev, "Failed allocating memory region\n");
7398af40	310	goto err_map;
c27a02cd	311	}
eb93ae49 PP	312	err = mlx4_mr_enable(mdev->dev, &mdev->mr);
eb93ae49 PP	313	if (err) {
c27a02cd YP	314	mlx4_err(mdev, "Failed enabling memory region\n");
	315	goto err_mr;
	316	}
	317
	318	/* Build device profile according to supplied module parameters */
f575a02e	319	mlx4_en_get_profile(mdev);
c27a02cd	320
25985edc	321	/* Configure which ports to start according to module parameters */
c27a02cd YP	322	mdev->port_cnt = 0;
	323	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	324	mdev->port_cnt++;
	325
02512482 IS	326	/* Set default number of RX rings*/
02512482 IS	327	mlx4_en_set_num_rx_rings(mdev);
c27a02cd YP	328
	329	/* Create our own workqueue for reset/multicast tasks
	330	* Note: we cannot use the shared workqueue because of deadlocks caused
	331	* by the rtnl lock */
	332	mdev->workqueue = create_singlethread_workqueue("mlx4_en");
eb93ae49 PP	333	if (!mdev->workqueue) {
eb93ae49 PP	334	err = -ENOMEM;
1a44cc37	335	goto err_mr;
eb93ae49	336	}
c27a02cd YP	337
	338	/* At this stage all non-port specific tasks are complete:
	339	* mark the card state as up */
	340	mutex_init(&mdev->state_lock);
	341	mdev->device_up = true;
	342
73d68002 PP	343	/* register mlx4 core notifier */
	344	mdev->mlx_nb.notifier_call = mlx4_en_event;
	345	err = mlx4_register_event_notifier(dev, &mdev->mlx_nb);
	346	WARN(err, "failed to register mlx4 event notifier (%d)", err);
	347
13f85711 PP	348	/* Setup ports */
	349
	350	/* Create a netdev for each port */
	351	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
	352	mlx4_info(mdev, "Activating port:%d\n", i);
	353	if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
	354	mdev->pndev[i] = NULL;
	355	}
	356
	357	/* register netdev notifier */
	358	mdev->netdev_nb.notifier_call = mlx4_en_netdev_event;
	359	if (register_netdevice_notifier(&mdev->netdev_nb)) {
	360	mdev->netdev_nb.notifier_call = NULL;
	361	mlx4_err(mdev, "Failed to create netdev notifier\n");
	362	}
	363
eb93ae49 PP	364	auxiliary_set_drvdata(adev, mdev);
eb93ae49 PP	365	return 0;
c27a02cd	366
c27a02cd	367	err_mr:
61083720	368	(void) mlx4_mr_free(dev, &mdev->mr);
7398af40	369	err_map:
8850494a	370	if (mdev->uar_map)
7398af40	371	iounmap(mdev->uar_map);
c27a02cd YP	372	err_uar:
	373	mlx4_uar_free(dev, &mdev->priv_uar);
	374	err_pd:
	375	mlx4_pd_free(dev, mdev->priv_pdn);
	376	err_free_dev:
	377	kfree(mdev);
	378	err_free_res:
eb93ae49	379	return err;
c27a02cd YP	380	}
c27a02cd YP	381
eb93ae49 PP	382	static const struct auxiliary_device_id mlx4_en_id_table[] = {
	383	{ .name = MLX4_ADEV_NAME ".eth" },
	384	{},
	385	};
	386
	387	MODULE_DEVICE_TABLE(auxiliary, mlx4_en_id_table);
	388
	389	static struct mlx4_adrv mlx4_en_adrv = {
	390	.adrv = {
	391	.name = "eth",
	392	.probe = mlx4_en_probe,
	393	.remove = mlx4_en_remove,
	394	.id_table = mlx4_en_id_table,
	395	},
0345584e	396	.protocol = MLX4_PROT_ETH,
c27a02cd YP	397	};
c27a02cd YP	398
d0ceebd7	399	static void mlx4_en_verify_params(void)
b97b33a3 EE	400	{
	401	if (pfctx > MAX_PFC_TX) {
	402	pr_warn("mlx4_en: WARNING: illegal module parameter pfctx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n",
	403	pfctx, MAX_PFC_TX);
	404	pfctx = 0;
	405	}
	406
	407	if (pfcrx > MAX_PFC_RX) {
	408	pr_warn("mlx4_en: WARNING: illegal module parameter pfcrx 0x%x - should be in range 0-0x%x, will be changed to default (0)\n",
	409	pfcrx, MAX_PFC_RX);
	410	pfcrx = 0;
	411	}
	412
	413	if (inline_thold < MIN_PKT_LEN \|\| inline_thold > MAX_INLINE) {
	414	pr_warn("mlx4_en: WARNING: illegal module parameter inline_thold %d - should be in range %d-%d, will be changed to default (%d)\n",
	415	inline_thold, MIN_PKT_LEN, MAX_INLINE, MAX_INLINE);
	416	inline_thold = MAX_INLINE;
	417	}
	418	}
	419
c27a02cd YP	420	static int __init mlx4_en_init(void)
c27a02cd YP	421	{
b97b33a3	422	mlx4_en_verify_params();
3d8f7cc7	423	mlx4_en_init_ptys2ethtool_map();
b97b33a3	424
eb93ae49	425	return mlx4_register_auxiliary_driver(&mlx4_en_adrv);
c27a02cd YP	426	}
	427
	428	static void __exit mlx4_en_cleanup(void)
	429	{
eb93ae49	430	mlx4_unregister_auxiliary_driver(&mlx4_en_adrv);
c27a02cd YP	431	}
	432
	433	module_init(mlx4_en_init);
	434	module_exit(mlx4_en_cleanup);
	435