Commit | Line | Data |
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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 */ |
66 | MLX4_EN_PARM_INT(udp_rss, 1, | |
67 | "Enable RSS for incomming 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 | ||
a2b28737 YP |
98 | static int mlx4_en_get_profile(struct mlx4_en_dev *mdev) |
99 | { | |
100 | struct mlx4_en_profile *params = &mdev->profile; | |
101 | int i; | |
102 | ||
0533943c | 103 | params->udp_rss = udp_rss; |
ccf86321 OG |
104 | if (params->udp_rss && !(mdev->dev->caps.flags |
105 | & MLX4_DEV_CAP_FLAG_UDP_RSS)) { | |
0533943c YP |
106 | mlx4_warn(mdev, "UDP RSS is not supported on this device.\n"); |
107 | params->udp_rss = 0; | |
108 | } | |
a2b28737 YP |
109 | for (i = 1; i <= MLX4_MAX_PORTS; i++) { |
110 | params->prof[i].rx_pause = 1; | |
111 | params->prof[i].rx_ppp = pfcrx; | |
112 | params->prof[i].tx_pause = 1; | |
113 | params->prof[i].tx_ppp = pfctx; | |
114 | params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE; | |
115 | params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE; | |
f813cad8 YP |
116 | params->prof[i].tx_ring_num = MLX4_EN_NUM_TX_RINGS + |
117 | (!!pfcrx) * MLX4_EN_NUM_PPP_RINGS; | |
93d3e367 | 118 | params->prof[i].rss_rings = 0; |
a2b28737 YP |
119 | } |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
33c87f0a EC |
124 | static void *mlx4_en_get_netdev(struct mlx4_dev *dev, void *ctx, u8 port) |
125 | { | |
126 | struct mlx4_en_dev *endev = ctx; | |
127 | ||
128 | return endev->pndev[port]; | |
129 | } | |
130 | ||
c27a02cd YP |
131 | static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr, |
132 | enum mlx4_dev_event event, int port) | |
133 | { | |
134 | struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr; | |
135 | struct mlx4_en_priv *priv; | |
136 | ||
137 | if (!mdev->pndev[port]) | |
138 | return; | |
139 | ||
140 | priv = netdev_priv(mdev->pndev[port]); | |
141 | switch (event) { | |
142 | case MLX4_DEV_EVENT_PORT_UP: | |
143 | case MLX4_DEV_EVENT_PORT_DOWN: | |
144 | /* To prevent races, we poll the link state in a separate | |
145 | task rather than changing it here */ | |
146 | priv->link_state = event; | |
147 | queue_work(mdev->workqueue, &priv->linkstate_task); | |
148 | break; | |
149 | ||
150 | case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: | |
151 | mlx4_err(mdev, "Internal error detected, restarting device\n"); | |
152 | break; | |
153 | ||
154 | default: | |
155 | mlx4_warn(mdev, "Unhandled event: %d\n", event); | |
156 | } | |
157 | } | |
158 | ||
159 | static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr) | |
160 | { | |
161 | struct mlx4_en_dev *mdev = endev_ptr; | |
162 | int i; | |
163 | ||
164 | mutex_lock(&mdev->state_lock); | |
165 | mdev->device_up = false; | |
166 | mutex_unlock(&mdev->state_lock); | |
167 | ||
168 | mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) | |
169 | if (mdev->pndev[i]) | |
170 | mlx4_en_destroy_netdev(mdev->pndev[i]); | |
171 | ||
172 | flush_workqueue(mdev->workqueue); | |
173 | destroy_workqueue(mdev->workqueue); | |
174 | mlx4_mr_free(dev, &mdev->mr); | |
7398af40 | 175 | iounmap(mdev->uar_map); |
c27a02cd YP |
176 | mlx4_uar_free(dev, &mdev->priv_uar); |
177 | mlx4_pd_free(dev, mdev->priv_pdn); | |
178 | kfree(mdev); | |
179 | } | |
180 | ||
181 | static void *mlx4_en_add(struct mlx4_dev *dev) | |
182 | { | |
c27a02cd YP |
183 | struct mlx4_en_dev *mdev; |
184 | int i; | |
185 | int err; | |
186 | ||
0a645e80 | 187 | printk_once(KERN_INFO "%s", mlx4_en_version); |
c27a02cd YP |
188 | |
189 | mdev = kzalloc(sizeof *mdev, GFP_KERNEL); | |
190 | if (!mdev) { | |
191 | dev_err(&dev->pdev->dev, "Device struct alloc failed, " | |
192 | "aborting.\n"); | |
193 | err = -ENOMEM; | |
194 | goto err_free_res; | |
195 | } | |
196 | ||
197 | if (mlx4_pd_alloc(dev, &mdev->priv_pdn)) | |
198 | goto err_free_dev; | |
199 | ||
200 | if (mlx4_uar_alloc(dev, &mdev->priv_uar)) | |
201 | goto err_pd; | |
202 | ||
4979d18f RD |
203 | mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT, |
204 | PAGE_SIZE); | |
c27a02cd YP |
205 | if (!mdev->uar_map) |
206 | goto err_uar; | |
207 | spin_lock_init(&mdev->uar_lock); | |
208 | ||
209 | mdev->dev = dev; | |
210 | mdev->dma_device = &(dev->pdev->dev); | |
211 | mdev->pdev = dev->pdev; | |
212 | mdev->device_up = false; | |
213 | ||
214 | mdev->LSO_support = !!(dev->caps.flags & (1 << 15)); | |
215 | if (!mdev->LSO_support) | |
216 | mlx4_warn(mdev, "LSO not supported, please upgrade to later " | |
217 | "FW version to enable LSO\n"); | |
218 | ||
219 | if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull, | |
220 | MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, | |
221 | 0, 0, &mdev->mr)) { | |
222 | mlx4_err(mdev, "Failed allocating memory region\n"); | |
7398af40 | 223 | goto err_map; |
c27a02cd YP |
224 | } |
225 | if (mlx4_mr_enable(mdev->dev, &mdev->mr)) { | |
226 | mlx4_err(mdev, "Failed enabling memory region\n"); | |
227 | goto err_mr; | |
228 | } | |
229 | ||
230 | /* Build device profile according to supplied module parameters */ | |
231 | err = mlx4_en_get_profile(mdev); | |
232 | if (err) { | |
233 | mlx4_err(mdev, "Bad module parameters, aborting.\n"); | |
234 | goto err_mr; | |
235 | } | |
236 | ||
25985edc | 237 | /* Configure which ports to start according to module parameters */ |
c27a02cd YP |
238 | mdev->port_cnt = 0; |
239 | mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) | |
240 | mdev->port_cnt++; | |
241 | ||
c27a02cd | 242 | mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { |
1fb9876e YP |
243 | if (!dev->caps.comp_pool) { |
244 | mdev->profile.prof[i].rx_ring_num = | |
245 | rounddown_pow_of_two(max_t(int, MIN_RX_RINGS, | |
246 | min_t(int, | |
247 | dev->caps.num_comp_vectors, | |
248 | MAX_RX_RINGS))); | |
249 | } else { | |
250 | mdev->profile.prof[i].rx_ring_num = rounddown_pow_of_two( | |
251 | min_t(int, dev->caps.comp_pool/ | |
252 | dev->caps.num_ports - 1 , MAX_MSIX_P_PORT - 1)); | |
253 | } | |
c27a02cd YP |
254 | } |
255 | ||
256 | /* Create our own workqueue for reset/multicast tasks | |
257 | * Note: we cannot use the shared workqueue because of deadlocks caused | |
258 | * by the rtnl lock */ | |
259 | mdev->workqueue = create_singlethread_workqueue("mlx4_en"); | |
260 | if (!mdev->workqueue) { | |
261 | err = -ENOMEM; | |
1a44cc37 | 262 | goto err_mr; |
c27a02cd YP |
263 | } |
264 | ||
265 | /* At this stage all non-port specific tasks are complete: | |
266 | * mark the card state as up */ | |
267 | mutex_init(&mdev->state_lock); | |
268 | mdev->device_up = true; | |
269 | ||
270 | /* Setup ports */ | |
271 | ||
272 | /* Create a netdev for each port */ | |
273 | mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { | |
274 | mlx4_info(mdev, "Activating port:%d\n", i); | |
3c2fa83f | 275 | if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i])) |
c27a02cd | 276 | mdev->pndev[i] = NULL; |
c27a02cd YP |
277 | } |
278 | return mdev; | |
279 | ||
c27a02cd YP |
280 | err_mr: |
281 | mlx4_mr_free(dev, &mdev->mr); | |
7398af40 AG |
282 | err_map: |
283 | if (!mdev->uar_map) | |
284 | iounmap(mdev->uar_map); | |
c27a02cd YP |
285 | err_uar: |
286 | mlx4_uar_free(dev, &mdev->priv_uar); | |
287 | err_pd: | |
288 | mlx4_pd_free(dev, mdev->priv_pdn); | |
289 | err_free_dev: | |
290 | kfree(mdev); | |
291 | err_free_res: | |
292 | return NULL; | |
293 | } | |
294 | ||
295 | static struct mlx4_interface mlx4_en_interface = { | |
33c87f0a EC |
296 | .add = mlx4_en_add, |
297 | .remove = mlx4_en_remove, | |
298 | .event = mlx4_en_event, | |
299 | .get_dev = mlx4_en_get_netdev, | |
0345584e | 300 | .protocol = MLX4_PROT_ETH, |
c27a02cd YP |
301 | }; |
302 | ||
303 | static int __init mlx4_en_init(void) | |
304 | { | |
305 | return mlx4_register_interface(&mlx4_en_interface); | |
306 | } | |
307 | ||
308 | static void __exit mlx4_en_cleanup(void) | |
309 | { | |
310 | mlx4_unregister_interface(&mlx4_en_interface); | |
311 | } | |
312 | ||
313 | module_init(mlx4_en_init); | |
314 | module_exit(mlx4_en_cleanup); | |
315 |