[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");

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

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;
		params->prof[i].inline_thold = inline_thold;
	}

	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;

	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;
		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]);

	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
		mlx4_en_remove_timestamp(mdev);

	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);

	/* 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;

	/* 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 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();

	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
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
0a645e80 JP	81	int en_print(const char level, const struct mlx4_en_priv priv,
	82	const char *format, ...)
	83	{
	84	va_list args;
	85	struct va_format vaf;
	86	int i;
	87
	88	va_start(args, format);
	89
	90	vaf.fmt = format;
	91	vaf.va = &args;
	92	if (priv->registered)
	93	i = printk("%s%s: %s: %pV",
	94	level, DRV_NAME, priv->dev->name, &vaf);
	95	else
	96	i = printk("%s%s: %s: Port %d: %pV",
	97	level, DRV_NAME, dev_name(&priv->mdev->pdev->dev),
	98	priv->port, &vaf);
	99	va_end(args);
	100
	101	return i;
	102	}
	103
79aeaccd YB	104	void mlx4_en_update_loopback_state(struct net_device *dev,
	105	netdev_features_t features)
	106	{
	107	struct mlx4_en_priv *priv = netdev_priv(dev);
	108
	109	priv->flags &= ~(MLX4_EN_FLAG_RX_FILTER_NEEDED\|
	110	MLX4_EN_FLAG_ENABLE_HW_LOOPBACK);
	111
	112	/* Drop the packet if SRIOV is not enabled
	113	* and not performing the selftest or flb disabled
	114	*/
	115	if (mlx4_is_mfunc(priv->mdev->dev) &&
	116	!(features & NETIF_F_LOOPBACK) && !priv->validate_loopback)
	117	priv->flags \|= MLX4_EN_FLAG_RX_FILTER_NEEDED;
	118
	119	/* Set dmac in Tx WQE if we are in SRIOV mode or if loopback selftest
	120	* is requested
	121	*/
	122	if (mlx4_is_mfunc(priv->mdev->dev) \|\| priv->validate_loopback)
	123	priv->flags \|= MLX4_EN_FLAG_ENABLE_HW_LOOPBACK;
	124	}
	125
a2b28737 YP	126	static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
	127	{
	128	struct mlx4_en_profile *params = &mdev->profile;
	129	int i;
	130
0533943c	131	params->udp_rss = udp_rss;
bc6a4744 AV	132	params->num_tx_rings_p_up = min_t(int, num_online_cpus(),
bc6a4744 AV	133	MLX4_EN_MAX_TX_RING_P_UP);
ccf86321 OG	134	if (params->udp_rss && !(mdev->dev->caps.flags
ccf86321 OG	135	& MLX4_DEV_CAP_FLAG_UDP_RSS)) {
1a91de28	136	mlx4_warn(mdev, "UDP RSS is not supported on this device\n");
0533943c YP	137	params->udp_rss = 0;
0533943c YP	138	}
a2b28737 YP	139	for (i = 1; i <= MLX4_MAX_PORTS; i++) {
	140	params->prof[i].rx_pause = 1;
	141	params->prof[i].rx_ppp = pfcrx;
	142	params->prof[i].tx_pause = 1;
	143	params->prof[i].tx_ppp = pfctx;
	144	params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
	145	params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
bc6a4744 AV	146	params->prof[i].tx_ring_num = params->num_tx_rings_p_up *
bc6a4744 AV	147	MLX4_EN_NUM_UP;
93d3e367	148	params->prof[i].rss_rings = 0;
b97b33a3	149	params->prof[i].inline_thold = inline_thold;
a2b28737 YP	150	}
	151
	152	return 0;
	153	}
	154
33c87f0a EC	155	static void mlx4_en_get_netdev(struct mlx4_dev dev, void *ctx, u8 port)
	156	{
	157	struct mlx4_en_dev *endev = ctx;
	158
	159	return endev->pndev[port];
	160	}
	161
c27a02cd	162	static void mlx4_en_event(struct mlx4_dev dev, void endev_ptr,
00f5ce99	163	enum mlx4_dev_event event, unsigned long port)
c27a02cd YP	164	{
	165	struct mlx4_en_dev mdev = (struct mlx4_en_dev ) endev_ptr;
	166	struct mlx4_en_priv *priv;
	167
c27a02cd YP	168	switch (event) {
	169	case MLX4_DEV_EVENT_PORT_UP:
	170	case MLX4_DEV_EVENT_PORT_DOWN:
13bf58b7 JM	171	if (!mdev->pndev[port])
	172	return;
	173	priv = netdev_priv(mdev->pndev[port]);
c27a02cd YP	174	/* To prevent races, we poll the link state in a separate
	175	task rather than changing it here */
	176	priv->link_state = event;
	177	queue_work(mdev->workqueue, &priv->linkstate_task);
	178	break;
	179
	180	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
	181	mlx4_err(mdev, "Internal error detected, restarting device\n");
	182	break;
	183
e4b59a1c EE	184	case MLX4_DEV_EVENT_SLAVE_INIT:
	185	case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
	186	break;
c27a02cd	187	default:
13bf58b7 JM	188	if (port < 1 \|\| port > dev->caps.num_ports \|\|
	189	!mdev->pndev[port])
	190	return;
00f5ce99 JM	191	mlx4_warn(mdev, "Unhandled event %d for port %d\n", event,
00f5ce99 JM	192	(int) port);
c27a02cd YP	193	}
	194	}
	195
	196	static void mlx4_en_remove(struct mlx4_dev dev, void endev_ptr)
	197	{
	198	struct mlx4_en_dev *mdev = endev_ptr;
	199	int i;
	200
	201	mutex_lock(&mdev->state_lock);
	202	mdev->device_up = false;
	203	mutex_unlock(&mdev->state_lock);
	204
	205	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	206	if (mdev->pndev[i])
	207	mlx4_en_destroy_netdev(mdev->pndev[i]);
	208
ad7d4eae SB	209	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
	210	mlx4_en_remove_timestamp(mdev);
	211
c27a02cd YP	212	flush_workqueue(mdev->workqueue);
c27a02cd YP	213	destroy_workqueue(mdev->workqueue);
61083720	214	(void) mlx4_mr_free(dev, &mdev->mr);
7398af40	215	iounmap(mdev->uar_map);
c27a02cd YP	216	mlx4_uar_free(dev, &mdev->priv_uar);
	217	mlx4_pd_free(dev, mdev->priv_pdn);
	218	kfree(mdev);
	219	}
	220
	221	static void mlx4_en_add(struct mlx4_dev dev)
	222	{
c27a02cd YP	223	struct mlx4_en_dev *mdev;
	224	int i;
	225	int err;
	226
0a645e80	227	printk_once(KERN_INFO "%s", mlx4_en_version);
c27a02cd	228
b2adaca9	229	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
c27a02cd	230	if (!mdev) {
c27a02cd YP	231	err = -ENOMEM;
	232	goto err_free_res;
	233	}
	234
	235	if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
	236	goto err_free_dev;
	237
	238	if (mlx4_uar_alloc(dev, &mdev->priv_uar))
	239	goto err_pd;
	240
4979d18f RD	241	mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
4979d18f RD	242	PAGE_SIZE);
c27a02cd YP	243	if (!mdev->uar_map)
	244	goto err_uar;
	245	spin_lock_init(&mdev->uar_lock);
	246
	247	mdev->dev = dev;
	248	mdev->dma_device = &(dev->pdev->dev);
	249	mdev->pdev = dev->pdev;
	250	mdev->device_up = false;
	251
	252	mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
	253	if (!mdev->LSO_support)
1a91de28	254	mlx4_warn(mdev, "LSO not supported, please upgrade to later FW version to enable LSO\n");
c27a02cd YP	255
	256	if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
	257	MLX4_PERM_LOCAL_WRITE \| MLX4_PERM_LOCAL_READ,
	258	0, 0, &mdev->mr)) {
	259	mlx4_err(mdev, "Failed allocating memory region\n");
7398af40	260	goto err_map;
c27a02cd YP	261	}
	262	if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
	263	mlx4_err(mdev, "Failed enabling memory region\n");
	264	goto err_mr;
	265	}
	266
	267	/* Build device profile according to supplied module parameters */
	268	err = mlx4_en_get_profile(mdev);
	269	if (err) {
1a91de28	270	mlx4_err(mdev, "Bad module parameters, aborting\n");
c27a02cd YP	271	goto err_mr;
	272	}
	273
25985edc	274	/* Configure which ports to start according to module parameters */
c27a02cd YP	275	mdev->port_cnt = 0;
	276	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
	277	mdev->port_cnt++;
	278
1ec4864b AV	279	/* Initialize time stamp mechanism */
	280	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
	281	mlx4_en_init_timestamp(mdev);
	282
02512482 IS	283	/* Set default number of RX rings*/
02512482 IS	284	mlx4_en_set_num_rx_rings(mdev);
c27a02cd YP	285
	286	/* Create our own workqueue for reset/multicast tasks
	287	* Note: we cannot use the shared workqueue because of deadlocks caused
	288	* by the rtnl lock */
	289	mdev->workqueue = create_singlethread_workqueue("mlx4_en");
	290	if (!mdev->workqueue) {
	291	err = -ENOMEM;
1a44cc37	292	goto err_mr;
c27a02cd YP	293	}
	294
	295	/* At this stage all non-port specific tasks are complete:
	296	* mark the card state as up */
	297	mutex_init(&mdev->state_lock);
	298	mdev->device_up = true;
	299
	300	/* Setup ports */
	301
	302	/* Create a netdev for each port */
	303	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
	304	mlx4_info(mdev, "Activating port:%d\n", i);
3c2fa83f	305	if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i]))
c27a02cd	306	mdev->pndev[i] = NULL;
c27a02cd	307	}
ec693d47	308
c27a02cd YP	309	return mdev;
c27a02cd YP	310
c27a02cd	311	err_mr:
61083720	312	(void) mlx4_mr_free(dev, &mdev->mr);
7398af40	313	err_map:
8850494a	314	if (mdev->uar_map)
7398af40	315	iounmap(mdev->uar_map);
c27a02cd YP	316	err_uar:
	317	mlx4_uar_free(dev, &mdev->priv_uar);
	318	err_pd:
	319	mlx4_pd_free(dev, mdev->priv_pdn);
	320	err_free_dev:
	321	kfree(mdev);
	322	err_free_res:
	323	return NULL;
	324	}
	325
	326	static struct mlx4_interface mlx4_en_interface = {
33c87f0a EC	327	.add = mlx4_en_add,
	328	.remove = mlx4_en_remove,
	329	.event = mlx4_en_event,
	330	.get_dev = mlx4_en_get_netdev,
0345584e	331	.protocol = MLX4_PROT_ETH,
c27a02cd YP	332	};
c27a02cd YP	333
d0ceebd7	334	static void mlx4_en_verify_params(void)
b97b33a3 EE	335	{
	336	if (pfctx > MAX_PFC_TX) {
	337	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",
	338	pfctx, MAX_PFC_TX);
	339	pfctx = 0;
	340	}
	341
	342	if (pfcrx > MAX_PFC_RX) {
	343	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",
	344	pfcrx, MAX_PFC_RX);
	345	pfcrx = 0;
	346	}
	347
	348	if (inline_thold < MIN_PKT_LEN \|\| inline_thold > MAX_INLINE) {
	349	pr_warn("mlx4_en: WARNING: illegal module parameter inline_thold %d - should be in range %d-%d, will be changed to default (%d)\n",
	350	inline_thold, MIN_PKT_LEN, MAX_INLINE, MAX_INLINE);
	351	inline_thold = MAX_INLINE;
	352	}
	353	}
	354
c27a02cd YP	355	static int __init mlx4_en_init(void)
c27a02cd YP	356	{
b97b33a3 EE	357	mlx4_en_verify_params();
b97b33a3 EE	358
c27a02cd YP	359	return mlx4_register_interface(&mlx4_en_interface);
	360	}
	361
	362	static void __exit mlx4_en_cleanup(void)
	363	{
	364	mlx4_unregister_interface(&mlx4_en_interface);
	365	}
	366
	367	module_init(mlx4_en_init);
	368	module_exit(mlx4_en_cleanup);
	369