2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
34 #include <linux/cpumask.h>
35 #include <linux/module.h>
36 #include <linux/delay.h>
37 #include <linux/netdevice.h>
38 #include <linux/cpumask.h>
40 #include <linux/mlx4/driver.h>
41 #include <linux/mlx4/device.h>
42 #include <linux/mlx4/cmd.h>
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
")");
51 static const char mlx4_en_version
[] =
52 DRV_NAME
": Mellanox ConnectX HCA Ethernet driver v"
53 DRV_VERSION
" (" DRV_RELDATE
")\n";
55 static void mlx4_en_event(struct mlx4_dev
*dev
, void *endev_ptr
,
56 enum mlx4_dev_event event
, int port
)
58 struct mlx4_en_dev
*mdev
= (struct mlx4_en_dev
*) endev_ptr
;
59 struct mlx4_en_priv
*priv
;
61 if (!mdev
->pndev
[port
])
64 priv
= netdev_priv(mdev
->pndev
[port
]);
66 case MLX4_DEV_EVENT_PORT_UP
:
67 case MLX4_DEV_EVENT_PORT_DOWN
:
68 /* To prevent races, we poll the link state in a separate
69 task rather than changing it here */
70 priv
->link_state
= event
;
71 queue_work(mdev
->workqueue
, &priv
->linkstate_task
);
74 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR
:
75 mlx4_err(mdev
, "Internal error detected, restarting device\n");
79 mlx4_warn(mdev
, "Unhandled event: %d\n", event
);
83 static void mlx4_en_remove(struct mlx4_dev
*dev
, void *endev_ptr
)
85 struct mlx4_en_dev
*mdev
= endev_ptr
;
88 mutex_lock(&mdev
->state_lock
);
89 mdev
->device_up
= false;
90 mutex_unlock(&mdev
->state_lock
);
92 mlx4_foreach_port(i
, dev
, MLX4_PORT_TYPE_ETH
)
94 mlx4_en_destroy_netdev(mdev
->pndev
[i
]);
96 flush_workqueue(mdev
->workqueue
);
97 destroy_workqueue(mdev
->workqueue
);
98 mlx4_mr_free(dev
, &mdev
->mr
);
99 mlx4_uar_free(dev
, &mdev
->priv_uar
);
100 mlx4_pd_free(dev
, mdev
->priv_pdn
);
104 static void *mlx4_en_add(struct mlx4_dev
*dev
)
106 static int mlx4_en_version_printed
;
107 struct mlx4_en_dev
*mdev
;
111 if (!mlx4_en_version_printed
) {
112 printk(KERN_INFO
"%s", mlx4_en_version
);
113 mlx4_en_version_printed
++;
116 mdev
= kzalloc(sizeof *mdev
, GFP_KERNEL
);
118 dev_err(&dev
->pdev
->dev
, "Device struct alloc failed, "
124 if (mlx4_pd_alloc(dev
, &mdev
->priv_pdn
))
127 if (mlx4_uar_alloc(dev
, &mdev
->priv_uar
))
130 mdev
->uar_map
= ioremap(mdev
->priv_uar
.pfn
<< PAGE_SHIFT
, PAGE_SIZE
);
133 spin_lock_init(&mdev
->uar_lock
);
136 mdev
->dma_device
= &(dev
->pdev
->dev
);
137 mdev
->pdev
= dev
->pdev
;
138 mdev
->device_up
= false;
140 mdev
->LSO_support
= !!(dev
->caps
.flags
& (1 << 15));
141 if (!mdev
->LSO_support
)
142 mlx4_warn(mdev
, "LSO not supported, please upgrade to later "
143 "FW version to enable LSO\n");
145 if (mlx4_mr_alloc(mdev
->dev
, mdev
->priv_pdn
, 0, ~0ull,
146 MLX4_PERM_LOCAL_WRITE
| MLX4_PERM_LOCAL_READ
,
148 mlx4_err(mdev
, "Failed allocating memory region\n");
151 if (mlx4_mr_enable(mdev
->dev
, &mdev
->mr
)) {
152 mlx4_err(mdev
, "Failed enabling memory region\n");
156 /* Build device profile according to supplied module parameters */
157 err
= mlx4_en_get_profile(mdev
);
159 mlx4_err(mdev
, "Bad module parameters, aborting.\n");
163 /* Configure wich ports to start according to module parameters */
165 mlx4_foreach_port(i
, dev
, MLX4_PORT_TYPE_ETH
)
168 /* If we did not receive an explicit number of Rx rings, default to
169 * the number of completion vectors populated by the mlx4_core */
170 mlx4_foreach_port(i
, dev
, MLX4_PORT_TYPE_ETH
) {
171 mlx4_info(mdev
, "Using %d tx rings for port:%d\n",
172 mdev
->profile
.prof
[i
].tx_ring_num
, i
);
173 if (!mdev
->profile
.prof
[i
].rx_ring_num
) {
174 mdev
->profile
.prof
[i
].rx_ring_num
= 1;
175 mlx4_info(mdev
, "Defaulting to %d rx rings for port:%d\n",
178 mlx4_info(mdev
, "Using %d rx rings for port:%d\n",
179 mdev
->profile
.prof
[i
].rx_ring_num
, i
);
182 /* Create our own workqueue for reset/multicast tasks
183 * Note: we cannot use the shared workqueue because of deadlocks caused
184 * by the rtnl lock */
185 mdev
->workqueue
= create_singlethread_workqueue("mlx4_en");
186 if (!mdev
->workqueue
) {
191 /* At this stage all non-port specific tasks are complete:
192 * mark the card state as up */
193 mutex_init(&mdev
->state_lock
);
194 mdev
->device_up
= true;
198 /* Create a netdev for each port */
199 mlx4_foreach_port(i
, dev
, MLX4_PORT_TYPE_ETH
) {
200 mlx4_info(mdev
, "Activating port:%d\n", i
);
201 if (mlx4_en_init_netdev(mdev
, i
, &mdev
->profile
.prof
[i
])) {
202 mdev
->pndev
[i
] = NULL
;
203 goto err_free_netdev
;
210 mlx4_foreach_port(i
, dev
, MLX4_PORT_TYPE_ETH
) {
212 mlx4_en_destroy_netdev(mdev
->pndev
[i
]);
215 mutex_lock(&mdev
->state_lock
);
216 mdev
->device_up
= false;
217 mutex_unlock(&mdev
->state_lock
);
218 flush_workqueue(mdev
->workqueue
);
220 /* Stop event queue before we drop down to release shared SW state */
223 destroy_workqueue(mdev
->workqueue
);
225 mlx4_mr_free(dev
, &mdev
->mr
);
227 mlx4_uar_free(dev
, &mdev
->priv_uar
);
229 mlx4_pd_free(dev
, mdev
->priv_pdn
);
236 static struct mlx4_interface mlx4_en_interface
= {
238 .remove
= mlx4_en_remove
,
239 .event
= mlx4_en_event
,
242 static int __init
mlx4_en_init(void)
244 return mlx4_register_interface(&mlx4_en_interface
);
247 static void __exit
mlx4_en_cleanup(void)
249 mlx4_unregister_interface(&mlx4_en_interface
);
252 module_init(mlx4_en_init
);
253 module_exit(mlx4_en_cleanup
);