[deliverable/linux.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 " ("DRV_RELDATE")");

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

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

	va_start(args, format);

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

	return i;
}

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

	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;
}

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

	params->udp_rss = udp_rss;
	params->num_tx_rings_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 = 1;
		params->prof[i].rx_ppp = pfcrx;
		params->prof[i].tx_pause = 1;
		params->prof[i].tx_ppp = pfctx;
		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].tx_ring_num = params->num_tx_rings_p_up *
			MLX4_EN_NUM_UP;
		params->prof[i].rss_rings = 0;
	}

	return 0;
}

static void *mlx4_en_get_netdev(struct mlx4_dev *dev, void *ctx, u8 port)
{
	struct mlx4_en_dev *endev = ctx;

	return endev->pndev[port];
}

static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr,
			  enum mlx4_dev_event event, unsigned long port)
{
	struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr;
	struct mlx4_en_priv *priv;

	switch (event) {
	case MLX4_DEV_EVENT_PORT_UP:
	case MLX4_DEV_EVENT_PORT_DOWN:
		if (!mdev->pndev[port])
			return;
		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;

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

static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
{
	struct mlx4_en_dev *mdev = endev_ptr;
	int i;

	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]);

	flush_workqueue(mdev->workqueue);
	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);
	kfree(mdev);
}

static void *mlx4_en_add(struct mlx4_dev *dev)
{
	struct mlx4_en_dev *mdev;
	int i;
	int err;

	printk_once(KERN_INFO "%s", mlx4_en_version);

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

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

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

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

	mdev->dev = dev;
	mdev->dma_device = &(dev->pdev->dev);
	mdev->pdev = dev->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");

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

	/* Build device profile according to supplied module parameters */
	err = mlx4_en_get_profile(mdev);
	if (err) {
		mlx4_err(mdev, "Bad module parameters, aborting.\n");
		goto err_mr;
	}

	/* 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++;

	/* Initialize time stamp mechanism */
	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
		mlx4_en_init_timestamp(mdev);

	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
		if (!dev->caps.comp_pool) {
			mdev->profile.prof[i].rx_ring_num =
				rounddown_pow_of_two(max_t(int, MIN_RX_RINGS,
							   min_t(int,
								 dev->caps.num_comp_vectors,
								 DEF_RX_RINGS)));
		} else {
			mdev->profile.prof[i].rx_ring_num = rounddown_pow_of_two(
				min_t(int, dev->caps.comp_pool/
				      dev->caps.num_ports - 1 , MAX_MSIX_P_PORT - 1));
		}
	}

	/* 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;

	/* 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;
	}

	return mdev;

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 NULL;
}

static struct mlx4_interface mlx4_en_interface = {
	.add		= mlx4_en_add,
	.remove		= mlx4_en_remove,
	.event		= mlx4_en_event,
	.get_dev	= mlx4_en_get_netdev,
	.protocol	= MLX4_PROT_ETH,
};

static int __init mlx4_en_init(void)
{
	return mlx4_register_interface(&mlx4_en_interface);
}

static void __exit mlx4_en_cleanup(void)
{
	mlx4_unregister_interface(&mlx4_en_interface);
}

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");
	49	MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")");
	50
	51	static const char mlx4_en_version[] =
	52	DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
	53	DRV_VERSION " (" DRV_RELDATE ")\n";
	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
0a645e80 JP	75	int en_print(const char level, const struct mlx4_en_priv priv,
	76	const char *format, ...)
	77	{
	78	va_list args;
	79	struct va_format vaf;
	80	int i;
	81
	82	va_start(args, format);
	83
	84	vaf.fmt = format;
	85	vaf.va = &args;
	86	if (priv->registered)
	87	i = printk("%s%s: %s: %pV",
	88	level, DRV_NAME, priv->dev->name, &vaf);
	89	else
	90	i = printk("%s%s: %s: Port %d: %pV",
	91	level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
	92	priv->port, &vaf);
	93	va_end(args);
	94
	95	return i;
	96	}
	97
79aeaccd YB	98	void mlx4_en_update_loopback_state(struct net_device *dev,
	99	netdev_features_t features)
	100	{
	101	struct mlx4_en_priv *priv = netdev_priv(dev);
	102
	103	priv->flags &= ~(MLX4_EN_FLAG_RX_FILTER_NEEDED\|
	104	MLX4_EN_FLAG_ENABLE_HW_LOOPBACK);
	105
	106	/* Drop the packet if SRIOV is not enabled
	107	* and not performing the selftest or flb disabled
	108	*/
	109	if (mlx4_is_mfunc(priv->mdev->dev) &&
	110	!(features & NETIF_F_LOOPBACK) && !priv->validate_loopback)
	111	priv->flags \|= MLX4_EN_FLAG_RX_FILTER_NEEDED;
	112
	113	/* Set dmac in Tx WQE if we are in SRIOV mode or if loopback selftest
	114	* is requested
	115	*/
	116	if (mlx4_is_mfunc(priv->mdev->dev) \|\| priv->validate_loopback)
	117	priv->flags \|= MLX4_EN_FLAG_ENABLE_HW_LOOPBACK;
	118	}
	119
a2b28737 YP	120	static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
	121	{
	122	struct mlx4_en_profile *params = &mdev->profile;
	123	int i;
	124
0533943c	125	params->udp_rss = udp_rss;
bc6a4744 AV	126	params->num_tx_rings_p_up = min_t(int, num_online_cpus(),
bc6a4744 AV	127	MLX4_EN_MAX_TX_RING_P_UP);
ccf86321 OG	128	if (params->udp_rss && !(mdev->dev->caps.flags
ccf86321 OG	129	& MLX4_DEV_CAP_FLAG_UDP_RSS)) {
0533943c YP	130	mlx4_warn(mdev, "UDP RSS is not supported on this device.\n");
	131	params->udp_rss = 0;
	132	}
a2b28737 YP	133	for (i = 1; i <= MLX4_MAX_PORTS; i++) {
	134	params->prof[i].rx_pause = 1;
	135	params->prof[i].rx_ppp = pfcrx;
	136	params->prof[i].tx_pause = 1;
	137	params->prof[i].tx_ppp = pfctx;
	138	params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
	139	params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
bc6a4744 AV	140	params->prof[i].tx_ring_num = params->num_tx_rings_p_up *
bc6a4744 AV	141	MLX4_EN_NUM_UP;
93d3e367	142	params->prof[i].rss_rings = 0;
a2b28737 YP	143	}
	144
	145	return 0;
	146	}
	147
33c87f0a EC	148	static void mlx4_en_get_netdev(struct mlx4_dev dev, void *ctx, u8 port)
	149	{
	150	struct mlx4_en_dev *endev = ctx;
	151
	152	return endev->pndev[port];
	153	}
	154
c27a02cd	155	static void mlx4_en_event(struct mlx4_dev dev, void endev_ptr,
00f5ce99	156	enum mlx4_dev_event event, unsigned long port)
c27a02cd YP	157	{
	158	struct mlx4_en_dev mdev = (struct mlx4_en_dev ) endev_ptr;
	159	struct mlx4_en_priv *priv;
	160
c27a02cd YP	161	switch (event) {
	162	case MLX4_DEV_EVENT_PORT_UP:
	163	case MLX4_DEV_EVENT_PORT_DOWN:
13bf58b7 JM	164	if (!mdev->pndev[port])
	165	return;
	166	priv = netdev_priv(mdev->pndev[port]);
c27a02cd YP	167	/* To prevent races, we poll the link state in a separate
	168	task rather than changing it here */
	169	priv->link_state = event;
	170	queue_work(mdev->workqueue, &priv->linkstate_task);
	171	break;
	172
	173	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
	174	mlx4_err(mdev, "Internal error detected, restarting device\n");
	175	break;
	176
	177	default:
13bf58b7 JM	178	if (port < 1 \|\| port > dev->caps.num_ports \|\|
	179	!mdev->pndev[port])
	180	return;
00f5ce99 JM	181	mlx4_warn(mdev, "Unhandled event %d for port %d\n", event,
00f5ce99 JM	182	(int) port);
c27a02cd YP	183	}
	184	}
	185
	186	static void mlx4_en_remove(struct mlx4_dev dev, void endev_ptr)
	187	{
	188	struct mlx4_en_dev *mdev = endev_ptr;
	189	int i;
	190
	191	mutex_lock(&mdev->state_lock);
	192	mdev->device_up = false;
	193	mutex_unlock(&mdev->state_lock);
	194
	195	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	196	if (mdev->pndev[i])
	197	mlx4_en_destroy_netdev(mdev->pndev[i]);
	198
	199	flush_workqueue(mdev->workqueue);
	200	destroy_workqueue(mdev->workqueue);
61083720	201	(void) mlx4_mr_free(dev, &mdev->mr);
7398af40	202	iounmap(mdev->uar_map);
c27a02cd YP	203	mlx4_uar_free(dev, &mdev->priv_uar);
	204	mlx4_pd_free(dev, mdev->priv_pdn);
	205	kfree(mdev);
	206	}
	207
	208	static void mlx4_en_add(struct mlx4_dev dev)
	209	{
c27a02cd YP	210	struct mlx4_en_dev *mdev;
	211	int i;
	212	int err;
	213
0a645e80	214	printk_once(KERN_INFO "%s", mlx4_en_version);
c27a02cd	215
b2adaca9	216	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
c27a02cd	217	if (!mdev) {
c27a02cd YP	218	err = -ENOMEM;
	219	goto err_free_res;
	220	}
	221
	222	if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
	223	goto err_free_dev;
	224
	225	if (mlx4_uar_alloc(dev, &mdev->priv_uar))
	226	goto err_pd;
	227
4979d18f RD	228	mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
4979d18f RD	229	PAGE_SIZE);
c27a02cd YP	230	if (!mdev->uar_map)
	231	goto err_uar;
	232	spin_lock_init(&mdev->uar_lock);
	233
	234	mdev->dev = dev;
	235	mdev->dma_device = &(dev->pdev->dev);
	236	mdev->pdev = dev->pdev;
	237	mdev->device_up = false;
	238
	239	mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
	240	if (!mdev->LSO_support)
	241	mlx4_warn(mdev, "LSO not supported, please upgrade to later "
	242	"FW version to enable LSO\n");
	243
	244	if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
	245	MLX4_PERM_LOCAL_WRITE \| MLX4_PERM_LOCAL_READ,
	246	0, 0, &mdev->mr)) {
	247	mlx4_err(mdev, "Failed allocating memory region\n");
7398af40	248	goto err_map;
c27a02cd YP	249	}
	250	if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
	251	mlx4_err(mdev, "Failed enabling memory region\n");
	252	goto err_mr;
	253	}
	254
	255	/* Build device profile according to supplied module parameters */
	256	err = mlx4_en_get_profile(mdev);
	257	if (err) {
	258	mlx4_err(mdev, "Bad module parameters, aborting.\n");
	259	goto err_mr;
	260	}
	261
25985edc	262	/* Configure which ports to start according to module parameters */
c27a02cd YP	263	mdev->port_cnt = 0;
	264	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	265	mdev->port_cnt++;
	266
1ec4864b AV	267	/* Initialize time stamp mechanism */
	268	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
	269	mlx4_en_init_timestamp(mdev);
	270
c27a02cd	271	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
1fb9876e YP	272	if (!dev->caps.comp_pool) {
	273	mdev->profile.prof[i].rx_ring_num =
	274	rounddown_pow_of_two(max_t(int, MIN_RX_RINGS,
	275	min_t(int,
	276	dev->caps.num_comp_vectors,
d317966b	277	DEF_RX_RINGS)));
1fb9876e YP	278	} else {
	279	mdev->profile.prof[i].rx_ring_num = rounddown_pow_of_two(
	280	min_t(int, dev->caps.comp_pool/
	281	dev->caps.num_ports - 1 , MAX_MSIX_P_PORT - 1));
	282	}
c27a02cd YP	283	}
	284
	285	/* Create our own workqueue for reset/multicast tasks
	286	* Note: we cannot use the shared workqueue because of deadlocks caused
	287	* by the rtnl lock */
	288	mdev->workqueue = create_singlethread_workqueue("mlx4_en");
	289	if (!mdev->workqueue) {
	290	err = -ENOMEM;
1a44cc37	291	goto err_mr;
c27a02cd YP	292	}
	293
	294	/* At this stage all non-port specific tasks are complete:
	295	* mark the card state as up */
	296	mutex_init(&mdev->state_lock);
	297	mdev->device_up = true;
	298
	299	/* Setup ports */
	300
	301	/* Create a netdev for each port */
	302	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
	303	mlx4_info(mdev, "Activating port:%d\n", i);
3c2fa83f	304	if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
c27a02cd	305	mdev->pndev[i] = NULL;
c27a02cd	306	}
ec693d47	307
c27a02cd YP	308	return mdev;
c27a02cd YP	309
c27a02cd	310	err_mr:
61083720	311	(void) mlx4_mr_free(dev, &mdev->mr);
7398af40	312	err_map:
8850494a	313	if (mdev->uar_map)
7398af40	314	iounmap(mdev->uar_map);
c27a02cd YP	315	err_uar:
	316	mlx4_uar_free(dev, &mdev->priv_uar);
	317	err_pd:
	318	mlx4_pd_free(dev, mdev->priv_pdn);
	319	err_free_dev:
	320	kfree(mdev);
	321	err_free_res:
	322	return NULL;
	323	}
	324
	325	static struct mlx4_interface mlx4_en_interface = {
33c87f0a EC	326	.add = mlx4_en_add,
	327	.remove = mlx4_en_remove,
	328	.event = mlx4_en_event,
	329	.get_dev = mlx4_en_get_netdev,
0345584e	330	.protocol = MLX4_PROT_ETH,
c27a02cd YP	331	};
	332
	333	static int __init mlx4_en_init(void)
	334	{
	335	return mlx4_register_interface(&mlx4_en_interface);
	336	}
	337
	338	static void __exit mlx4_en_cleanup(void)
	339	{
	340	mlx4_unregister_interface(&mlx4_en_interface);
	341	}
	342
	343	module_init(mlx4_en_init);
	344	module_exit(mlx4_en_cleanup);
	345