251 lines
6.9 KiB
C
251 lines
6.9 KiB
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/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";
|
|
|
|
static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr,
|
|
enum mlx4_dev_event event, int port)
|
|
{
|
|
struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr;
|
|
struct mlx4_en_priv *priv;
|
|
|
|
if (!mdev->pndev[port])
|
|
return;
|
|
|
|
priv = netdev_priv(mdev->pndev[port]);
|
|
switch (event) {
|
|
case MLX4_DEV_EVENT_PORT_UP:
|
|
case MLX4_DEV_EVENT_PORT_DOWN:
|
|
/* 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:
|
|
mlx4_warn(mdev, "Unhandled event: %d\n", event);
|
|
}
|
|
}
|
|
|
|
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);
|
|
mlx4_mr_free(dev, &mdev->mr);
|
|
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)
|
|
{
|
|
static int mlx4_en_version_printed;
|
|
struct mlx4_en_dev *mdev;
|
|
int i;
|
|
int err;
|
|
|
|
if (!mlx4_en_version_printed) {
|
|
printk(KERN_INFO "%s", mlx4_en_version);
|
|
mlx4_en_version_printed++;
|
|
}
|
|
|
|
mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
|
|
if (!mdev) {
|
|
dev_err(&dev->pdev->dev, "Device struct alloc failed, "
|
|
"aborting.\n");
|
|
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(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_uar;
|
|
}
|
|
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 wich ports to start according to module parameters */
|
|
mdev->port_cnt = 0;
|
|
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
|
|
mdev->port_cnt++;
|
|
|
|
/* If we did not receive an explicit number of Rx rings, default to
|
|
* the number of completion vectors populated by the mlx4_core */
|
|
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
|
|
mlx4_info(mdev, "Using %d tx rings for port:%d\n",
|
|
mdev->profile.prof[i].tx_ring_num, i);
|
|
mdev->profile.prof[i].rx_ring_num =
|
|
min_t(int, dev->caps.num_comp_vectors, MAX_RX_RINGS);
|
|
mlx4_info(mdev, "Defaulting to %d rx rings for port:%d\n",
|
|
mdev->profile.prof[i].rx_ring_num, i);
|
|
}
|
|
|
|
/* 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_close_nic;
|
|
}
|
|
|
|
/* 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;
|
|
goto err_free_netdev;
|
|
}
|
|
}
|
|
return mdev;
|
|
|
|
|
|
err_free_netdev:
|
|
mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
|
|
if (mdev->pndev[i])
|
|
mlx4_en_destroy_netdev(mdev->pndev[i]);
|
|
}
|
|
|
|
mutex_lock(&mdev->state_lock);
|
|
mdev->device_up = false;
|
|
mutex_unlock(&mdev->state_lock);
|
|
flush_workqueue(mdev->workqueue);
|
|
|
|
/* Stop event queue before we drop down to release shared SW state */
|
|
|
|
err_close_nic:
|
|
destroy_workqueue(mdev->workqueue);
|
|
err_mr:
|
|
mlx4_mr_free(dev, &mdev->mr);
|
|
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,
|
|
};
|
|
|
|
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);
|
|
|