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net: move procfs code to net/core/net-procfs.c
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx4 / main.c
blobe7d81c0d1ac59ad94b9172b429a2c186d4ee2b23
1 /*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/errno.h>
38 #include <linux/netdevice.h>
39 #include <linux/inetdevice.h>
40 #include <linux/rtnetlink.h>
41 #include <linux/if_vlan.h>
42
43 #include <rdma/ib_smi.h>
44 #include <rdma/ib_user_verbs.h>
45 #include <rdma/ib_addr.h>
46
47 #include <linux/mlx4/driver.h>
48 #include <linux/mlx4/cmd.h>
49
50 #include "mlx4_ib.h"
51 #include "user.h"
52
53 #define DRV_NAME MLX4_IB_DRV_NAME
54 #define DRV_VERSION "1.0"
55 #define DRV_RELDATE "April 4, 2008"
56
57 MODULE_AUTHOR("Roland Dreier");
58 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
59 MODULE_LICENSE("Dual BSD/GPL");
60 MODULE_VERSION(DRV_VERSION);
61
62 int mlx4_ib_sm_guid_assign = 1;
63 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
64 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)");
65
66 static const char mlx4_ib_version[] =
67 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
68 DRV_VERSION " (" DRV_RELDATE ")\n";
69
70 struct update_gid_work {
71 struct work_struct work;
72 union ib_gid gids[128];
73 struct mlx4_ib_dev *dev;
74 int port;
75 };
76
77 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
78
79 static struct workqueue_struct *wq;
80
81 static void init_query_mad(struct ib_smp *mad)
82 {
83 mad->base_version = 1;
84 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
85 mad->class_version = 1;
86 mad->method = IB_MGMT_METHOD_GET;
87 }
88
89 static union ib_gid zgid;
90
91 static int mlx4_ib_query_device(struct ib_device *ibdev,
92 struct ib_device_attr *props)
93 {
94 struct mlx4_ib_dev *dev = to_mdev(ibdev);
95 struct ib_smp *in_mad = NULL;
96 struct ib_smp *out_mad = NULL;
97 int err = -ENOMEM;
98
99 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
100 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
101 if (!in_mad || !out_mad)
102 goto out;
103
104 init_query_mad(in_mad);
105 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
106
107 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
108 1, NULL, NULL, in_mad, out_mad);
109 if (err)
110 goto out;
111
112 memset(props, 0, sizeof *props);
113
114 props->fw_ver = dev->dev->caps.fw_ver;
115 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
116 IB_DEVICE_PORT_ACTIVE_EVENT |
117 IB_DEVICE_SYS_IMAGE_GUID |
118 IB_DEVICE_RC_RNR_NAK_GEN |
119 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
120 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
121 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
122 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
123 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
124 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
125 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
126 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
127 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
128 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
129 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
130 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
131 props->device_cap_flags |= IB_DEVICE_UD_TSO;
132 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
133 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
134 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
135 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
136 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
137 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
138 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
139 props->device_cap_flags |= IB_DEVICE_XRC;
140
141 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
142 0xffffff;
143 props->vendor_part_id = dev->dev->pdev->device;
144 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
145 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
146
147 props->max_mr_size = ~0ull;
148 props->page_size_cap = dev->dev->caps.page_size_cap;
149 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
150 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
151 props->max_sge = min(dev->dev->caps.max_sq_sg,
152 dev->dev->caps.max_rq_sg);
153 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
154 props->max_cqe = dev->dev->caps.max_cqes;
155 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
156 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
157 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
158 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
159 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
160 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
161 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
162 props->max_srq_sge = dev->dev->caps.max_srq_sge;
163 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
164 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
165 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
166 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
167 props->masked_atomic_cap = props->atomic_cap;
168 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
169 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
170 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
171 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
172 props->max_mcast_grp;
173 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
174
175 out:
176 kfree(in_mad);
177 kfree(out_mad);
178
179 return err;
180 }
181
182 static enum rdma_link_layer
183 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
184 {
185 struct mlx4_dev *dev = to_mdev(device)->dev;
186
187 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
188 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
189 }
190
191 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
192 struct ib_port_attr *props, int netw_view)
193 {
194 struct ib_smp *in_mad = NULL;
195 struct ib_smp *out_mad = NULL;
196 int ext_active_speed;
197 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
198 int err = -ENOMEM;
199
200 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
201 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
202 if (!in_mad || !out_mad)
203 goto out;
204
205 init_query_mad(in_mad);
206 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
207 in_mad->attr_mod = cpu_to_be32(port);
208
209 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
210 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
211
212 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
213 in_mad, out_mad);
214 if (err)
215 goto out;
216
217
218 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
219 props->lmc = out_mad->data[34] & 0x7;
220 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
221 props->sm_sl = out_mad->data[36] & 0xf;
222 props->state = out_mad->data[32] & 0xf;
223 props->phys_state = out_mad->data[33] >> 4;
224 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
225 if (netw_view)
226 props->gid_tbl_len = out_mad->data[50];
227 else
228 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
229 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
230 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
231 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
232 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
233 props->active_width = out_mad->data[31] & 0xf;
234 props->active_speed = out_mad->data[35] >> 4;
235 props->max_mtu = out_mad->data[41] & 0xf;
236 props->active_mtu = out_mad->data[36] >> 4;
237 props->subnet_timeout = out_mad->data[51] & 0x1f;
238 props->max_vl_num = out_mad->data[37] >> 4;
239 props->init_type_reply = out_mad->data[41] >> 4;
240
241 /* Check if extended speeds (EDR/FDR/...) are supported */
242 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
243 ext_active_speed = out_mad->data[62] >> 4;
244
245 switch (ext_active_speed) {
246 case 1:
247 props->active_speed = IB_SPEED_FDR;
248 break;
249 case 2:
250 props->active_speed = IB_SPEED_EDR;
251 break;
252 }
253 }
254
255 /* If reported active speed is QDR, check if is FDR-10 */
256 if (props->active_speed == IB_SPEED_QDR) {
257 init_query_mad(in_mad);
258 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
259 in_mad->attr_mod = cpu_to_be32(port);
260
261 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
262 NULL, NULL, in_mad, out_mad);
263 if (err)
264 goto out;
265
266 /* Checking LinkSpeedActive for FDR-10 */
267 if (out_mad->data[15] & 0x1)
268 props->active_speed = IB_SPEED_FDR10;
269 }
270
271 /* Avoid wrong speed value returned by FW if the IB link is down. */
272 if (props->state == IB_PORT_DOWN)
273 props->active_speed = IB_SPEED_SDR;
274
275 out:
276 kfree(in_mad);
277 kfree(out_mad);
278 return err;
279 }
280
281 static u8 state_to_phys_state(enum ib_port_state state)
282 {
283 return state == IB_PORT_ACTIVE ? 5 : 3;
284 }
285
286 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
287 struct ib_port_attr *props, int netw_view)
288 {
289
290 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
291 struct mlx4_ib_iboe *iboe = &mdev->iboe;
292 struct net_device *ndev;
293 enum ib_mtu tmp;
294 struct mlx4_cmd_mailbox *mailbox;
295 int err = 0;
296
297 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
298 if (IS_ERR(mailbox))
299 return PTR_ERR(mailbox);
300
301 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
302 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
303 MLX4_CMD_WRAPPED);
304 if (err)
305 goto out;
306
307 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ?
308 IB_WIDTH_4X : IB_WIDTH_1X;
309 props->active_speed = IB_SPEED_QDR;
310 props->port_cap_flags = IB_PORT_CM_SUP;
311 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
312 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
313 props->pkey_tbl_len = 1;
314 props->max_mtu = IB_MTU_4096;
315 props->max_vl_num = 2;
316 props->state = IB_PORT_DOWN;
317 props->phys_state = state_to_phys_state(props->state);
318 props->active_mtu = IB_MTU_256;
319 spin_lock(&iboe->lock);
320 ndev = iboe->netdevs[port - 1];
321 if (!ndev)
322 goto out_unlock;
323
324 tmp = iboe_get_mtu(ndev->mtu);
325 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
326
327 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
328 IB_PORT_ACTIVE : IB_PORT_DOWN;
329 props->phys_state = state_to_phys_state(props->state);
330 out_unlock:
331 spin_unlock(&iboe->lock);
332 out:
333 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
334 return err;
335 }
336
337 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
338 struct ib_port_attr *props, int netw_view)
339 {
340 int err;
341
342 memset(props, 0, sizeof *props);
343
344 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
345 ib_link_query_port(ibdev, port, props, netw_view) :
346 eth_link_query_port(ibdev, port, props, netw_view);
347
348 return err;
349 }
350
351 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
352 struct ib_port_attr *props)
353 {
354 /* returns host view */
355 return __mlx4_ib_query_port(ibdev, port, props, 0);
356 }
357
358 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
359 union ib_gid *gid, int netw_view)
360 {
361 struct ib_smp *in_mad = NULL;
362 struct ib_smp *out_mad = NULL;
363 int err = -ENOMEM;
364 struct mlx4_ib_dev *dev = to_mdev(ibdev);
365 int clear = 0;
366 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
367
368 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
369 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
370 if (!in_mad || !out_mad)
371 goto out;
372
373 init_query_mad(in_mad);
374 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
375 in_mad->attr_mod = cpu_to_be32(port);
376
377 if (mlx4_is_mfunc(dev->dev) && netw_view)
378 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
379
380 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
381 if (err)
382 goto out;
383
384 memcpy(gid->raw, out_mad->data + 8, 8);
385
386 if (mlx4_is_mfunc(dev->dev) && !netw_view) {
387 if (index) {
388 /* For any index > 0, return the null guid */
389 err = 0;
390 clear = 1;
391 goto out;
392 }
393 }
394
395 init_query_mad(in_mad);
396 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
397 in_mad->attr_mod = cpu_to_be32(index / 8);
398
399 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
400 NULL, NULL, in_mad, out_mad);
401 if (err)
402 goto out;
403
404 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
405
406 out:
407 if (clear)
408 memset(gid->raw + 8, 0, 8);
409 kfree(in_mad);
410 kfree(out_mad);
411 return err;
412 }
413
414 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
415 union ib_gid *gid)
416 {
417 struct mlx4_ib_dev *dev = to_mdev(ibdev);
418
419 *gid = dev->iboe.gid_table[port - 1][index];
420
421 return 0;
422 }
423
424 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
425 union ib_gid *gid)
426 {
427 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
428 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
429 else
430 return iboe_query_gid(ibdev, port, index, gid);
431 }
432
433 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
434 u16 *pkey, int netw_view)
435 {
436 struct ib_smp *in_mad = NULL;
437 struct ib_smp *out_mad = NULL;
438 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
439 int err = -ENOMEM;
440
441 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
442 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
443 if (!in_mad || !out_mad)
444 goto out;
445
446 init_query_mad(in_mad);
447 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
448 in_mad->attr_mod = cpu_to_be32(index / 32);
449
450 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
451 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
452
453 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
454 in_mad, out_mad);
455 if (err)
456 goto out;
457
458 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
459
460 out:
461 kfree(in_mad);
462 kfree(out_mad);
463 return err;
464 }
465
466 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
467 {
468 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
469 }
470
471 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
472 struct ib_device_modify *props)
473 {
474 struct mlx4_cmd_mailbox *mailbox;
475 unsigned long flags;
476
477 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
478 return -EOPNOTSUPP;
479
480 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
481 return 0;
482
483 if (mlx4_is_slave(to_mdev(ibdev)->dev))
484 return -EOPNOTSUPP;
485
486 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
487 memcpy(ibdev->node_desc, props->node_desc, 64);
488 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
489
490 /*
491 * If possible, pass node desc to FW, so it can generate
492 * a 144 trap. If cmd fails, just ignore.
493 */
494 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
495 if (IS_ERR(mailbox))
496 return 0;
497
498 memset(mailbox->buf, 0, 256);
499 memcpy(mailbox->buf, props->node_desc, 64);
500 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
501 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
502
503 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
504
505 return 0;
506 }
507
508 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
509 u32 cap_mask)
510 {
511 struct mlx4_cmd_mailbox *mailbox;
512 int err;
513 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
514
515 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
516 if (IS_ERR(mailbox))
517 return PTR_ERR(mailbox);
518
519 memset(mailbox->buf, 0, 256);
520
521 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
522 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
523 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
524 } else {
525 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
526 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
527 }
528
529 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
530 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
531
532 mlx4_free_cmd_mailbox(dev->dev, mailbox);
533 return err;
534 }
535
536 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
537 struct ib_port_modify *props)
538 {
539 struct ib_port_attr attr;
540 u32 cap_mask;
541 int err;
542
543 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
544
545 err = mlx4_ib_query_port(ibdev, port, &attr);
546 if (err)
547 goto out;
548
549 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
550 ~props->clr_port_cap_mask;
551
552 err = mlx4_SET_PORT(to_mdev(ibdev), port,
553 !!(mask & IB_PORT_RESET_QKEY_CNTR),
554 cap_mask);
555
556 out:
557 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
558 return err;
559 }
560
561 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
562 struct ib_udata *udata)
563 {
564 struct mlx4_ib_dev *dev = to_mdev(ibdev);
565 struct mlx4_ib_ucontext *context;
566 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
567 struct mlx4_ib_alloc_ucontext_resp resp;
568 int err;
569
570 if (!dev->ib_active)
571 return ERR_PTR(-EAGAIN);
572
573 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
574 resp_v3.qp_tab_size = dev->dev->caps.num_qps;
575 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size;
576 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
577 } else {
578 resp.dev_caps = dev->dev->caps.userspace_caps;
579 resp.qp_tab_size = dev->dev->caps.num_qps;
580 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
581 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
582 resp.cqe_size = dev->dev->caps.cqe_size;
583 }
584
585 context = kmalloc(sizeof *context, GFP_KERNEL);
586 if (!context)
587 return ERR_PTR(-ENOMEM);
588
589 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
590 if (err) {
591 kfree(context);
592 return ERR_PTR(err);
593 }
594
595 INIT_LIST_HEAD(&context->db_page_list);
596 mutex_init(&context->db_page_mutex);
597
598 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
599 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
600 else
601 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
602
603 if (err) {
604 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
605 kfree(context);
606 return ERR_PTR(-EFAULT);
607 }
608
609 return &context->ibucontext;
610 }
611
612 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
613 {
614 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
615
616 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
617 kfree(context);
618
619 return 0;
620 }
621
622 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
623 {
624 struct mlx4_ib_dev *dev = to_mdev(context->device);
625
626 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
627 return -EINVAL;
628
629 if (vma->vm_pgoff == 0) {
630 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
631
632 if (io_remap_pfn_range(vma, vma->vm_start,
633 to_mucontext(context)->uar.pfn,
634 PAGE_SIZE, vma->vm_page_prot))
635 return -EAGAIN;
636 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
637 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
638
639 if (io_remap_pfn_range(vma, vma->vm_start,
640 to_mucontext(context)->uar.pfn +
641 dev->dev->caps.num_uars,
642 PAGE_SIZE, vma->vm_page_prot))
643 return -EAGAIN;
644 } else
645 return -EINVAL;
646
647 return 0;
648 }
649
650 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
651 struct ib_ucontext *context,
652 struct ib_udata *udata)
653 {
654 struct mlx4_ib_pd *pd;
655 int err;
656
657 pd = kmalloc(sizeof *pd, GFP_KERNEL);
658 if (!pd)
659 return ERR_PTR(-ENOMEM);
660
661 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
662 if (err) {
663 kfree(pd);
664 return ERR_PTR(err);
665 }
666
667 if (context)
668 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
669 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
670 kfree(pd);
671 return ERR_PTR(-EFAULT);
672 }
673
674 return &pd->ibpd;
675 }
676
677 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
678 {
679 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
680 kfree(pd);
681
682 return 0;
683 }
684
685 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
686 struct ib_ucontext *context,
687 struct ib_udata *udata)
688 {
689 struct mlx4_ib_xrcd *xrcd;
690 int err;
691
692 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
693 return ERR_PTR(-ENOSYS);
694
695 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
696 if (!xrcd)
697 return ERR_PTR(-ENOMEM);
698
699 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
700 if (err)
701 goto err1;
702
703 xrcd->pd = ib_alloc_pd(ibdev);
704 if (IS_ERR(xrcd->pd)) {
705 err = PTR_ERR(xrcd->pd);
706 goto err2;
707 }
708
709 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
710 if (IS_ERR(xrcd->cq)) {
711 err = PTR_ERR(xrcd->cq);
712 goto err3;
713 }
714
715 return &xrcd->ibxrcd;
716
717 err3:
718 ib_dealloc_pd(xrcd->pd);
719 err2:
720 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
721 err1:
722 kfree(xrcd);
723 return ERR_PTR(err);
724 }
725
726 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
727 {
728 ib_destroy_cq(to_mxrcd(xrcd)->cq);
729 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
730 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
731 kfree(xrcd);
732
733 return 0;
734 }
735
736 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
737 {
738 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
739 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
740 struct mlx4_ib_gid_entry *ge;
741
742 ge = kzalloc(sizeof *ge, GFP_KERNEL);
743 if (!ge)
744 return -ENOMEM;
745
746 ge->gid = *gid;
747 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
748 ge->port = mqp->port;
749 ge->added = 1;
750 }
751
752 mutex_lock(&mqp->mutex);
753 list_add_tail(&ge->list, &mqp->gid_list);
754 mutex_unlock(&mqp->mutex);
755
756 return 0;
757 }
758
759 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
760 union ib_gid *gid)
761 {
762 u8 mac[6];
763 struct net_device *ndev;
764 int ret = 0;
765
766 if (!mqp->port)
767 return 0;
768
769 spin_lock(&mdev->iboe.lock);
770 ndev = mdev->iboe.netdevs[mqp->port - 1];
771 if (ndev)
772 dev_hold(ndev);
773 spin_unlock(&mdev->iboe.lock);
774
775 if (ndev) {
776 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
777 rtnl_lock();
778 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
779 ret = 1;
780 rtnl_unlock();
781 dev_put(ndev);
782 }
783
784 return ret;
785 }
786
787 struct mlx4_ib_steering {
788 struct list_head list;
789 u64 reg_id;
790 union ib_gid gid;
791 };
792
793 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
794 {
795 int err;
796 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
797 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
798 u64 reg_id;
799 struct mlx4_ib_steering *ib_steering = NULL;
800
801 if (mdev->dev->caps.steering_mode ==
802 MLX4_STEERING_MODE_DEVICE_MANAGED) {
803 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
804 if (!ib_steering)
805 return -ENOMEM;
806 }
807
808 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
809 !!(mqp->flags &
810 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
811 MLX4_PROT_IB_IPV6, &reg_id);
812 if (err)
813 goto err_malloc;
814
815 err = add_gid_entry(ibqp, gid);
816 if (err)
817 goto err_add;
818
819 if (ib_steering) {
820 memcpy(ib_steering->gid.raw, gid->raw, 16);
821 ib_steering->reg_id = reg_id;
822 mutex_lock(&mqp->mutex);
823 list_add(&ib_steering->list, &mqp->steering_rules);
824 mutex_unlock(&mqp->mutex);
825 }
826 return 0;
827
828 err_add:
829 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
830 MLX4_PROT_IB_IPV6, reg_id);
831 err_malloc:
832 kfree(ib_steering);
833
834 return err;
835 }
836
837 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
838 {
839 struct mlx4_ib_gid_entry *ge;
840 struct mlx4_ib_gid_entry *tmp;
841 struct mlx4_ib_gid_entry *ret = NULL;
842
843 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
844 if (!memcmp(raw, ge->gid.raw, 16)) {
845 ret = ge;
846 break;
847 }
848 }
849
850 return ret;
851 }
852
853 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
854 {
855 int err;
856 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
857 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
858 u8 mac[6];
859 struct net_device *ndev;
860 struct mlx4_ib_gid_entry *ge;
861 u64 reg_id = 0;
862
863 if (mdev->dev->caps.steering_mode ==
864 MLX4_STEERING_MODE_DEVICE_MANAGED) {
865 struct mlx4_ib_steering *ib_steering;
866
867 mutex_lock(&mqp->mutex);
868 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
869 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
870 list_del(&ib_steering->list);
871 break;
872 }
873 }
874 mutex_unlock(&mqp->mutex);
875 if (&ib_steering->list == &mqp->steering_rules) {
876 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
877 return -EINVAL;
878 }
879 reg_id = ib_steering->reg_id;
880 kfree(ib_steering);
881 }
882
883 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
884 MLX4_PROT_IB_IPV6, reg_id);
885 if (err)
886 return err;
887
888 mutex_lock(&mqp->mutex);
889 ge = find_gid_entry(mqp, gid->raw);
890 if (ge) {
891 spin_lock(&mdev->iboe.lock);
892 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
893 if (ndev)
894 dev_hold(ndev);
895 spin_unlock(&mdev->iboe.lock);
896 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
897 if (ndev) {
898 rtnl_lock();
899 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
900 rtnl_unlock();
901 dev_put(ndev);
902 }
903 list_del(&ge->list);
904 kfree(ge);
905 } else
906 pr_warn("could not find mgid entry\n");
907
908 mutex_unlock(&mqp->mutex);
909
910 return 0;
911 }
912
913 static int init_node_data(struct mlx4_ib_dev *dev)
914 {
915 struct ib_smp *in_mad = NULL;
916 struct ib_smp *out_mad = NULL;
917 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
918 int err = -ENOMEM;
919
920 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
921 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
922 if (!in_mad || !out_mad)
923 goto out;
924
925 init_query_mad(in_mad);
926 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
927 if (mlx4_is_master(dev->dev))
928 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
929
930 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
931 if (err)
932 goto out;
933
934 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
935
936 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
937
938 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
939 if (err)
940 goto out;
941
942 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
943 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
944
945 out:
946 kfree(in_mad);
947 kfree(out_mad);
948 return err;
949 }
950
951 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
952 char *buf)
953 {
954 struct mlx4_ib_dev *dev =
955 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
956 return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
957 }
958
959 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
960 char *buf)
961 {
962 struct mlx4_ib_dev *dev =
963 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
964 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
965 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
966 (int) dev->dev->caps.fw_ver & 0xffff);
967 }
968
969 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
970 char *buf)
971 {
972 struct mlx4_ib_dev *dev =
973 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
974 return sprintf(buf, "%x\n", dev->dev->rev_id);
975 }
976
977 static ssize_t show_board(struct device *device, struct device_attribute *attr,
978 char *buf)
979 {
980 struct mlx4_ib_dev *dev =
981 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
982 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
983 dev->dev->board_id);
984 }
985
986 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
987 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
988 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
989 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
990
991 static struct device_attribute *mlx4_class_attributes[] = {
992 &dev_attr_hw_rev,
993 &dev_attr_fw_ver,
994 &dev_attr_hca_type,
995 &dev_attr_board_id
996 };
997
998 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
999 {
1000 memcpy(eui, dev->dev_addr, 3);
1001 memcpy(eui + 5, dev->dev_addr + 3, 3);
1002 if (vlan_id < 0x1000) {
1003 eui[3] = vlan_id >> 8;
1004 eui[4] = vlan_id & 0xff;
1005 } else {
1006 eui[3] = 0xff;
1007 eui[4] = 0xfe;
1008 }
1009 eui[0] ^= 2;
1010 }
1011
1012 static void update_gids_task(struct work_struct *work)
1013 {
1014 struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1015 struct mlx4_cmd_mailbox *mailbox;
1016 union ib_gid *gids;
1017 int err;
1018 struct mlx4_dev *dev = gw->dev->dev;
1019
1020 mailbox = mlx4_alloc_cmd_mailbox(dev);
1021 if (IS_ERR(mailbox)) {
1022 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1023 return;
1024 }
1025
1026 gids = mailbox->buf;
1027 memcpy(gids, gw->gids, sizeof gw->gids);
1028
1029 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1030 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1031 MLX4_CMD_WRAPPED);
1032 if (err)
1033 pr_warn("set port command failed\n");
1034 else {
1035 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
1036 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
1037 }
1038
1039 mlx4_free_cmd_mailbox(dev, mailbox);
1040 kfree(gw);
1041 }
1042
1043 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
1044 {
1045 struct net_device *ndev = dev->iboe.netdevs[port - 1];
1046 struct update_gid_work *work;
1047 struct net_device *tmp;
1048 int i;
1049 u8 *hits;
1050 int ret;
1051 union ib_gid gid;
1052 int free;
1053 int found;
1054 int need_update = 0;
1055 u16 vid;
1056
1057 work = kzalloc(sizeof *work, GFP_ATOMIC);
1058 if (!work)
1059 return -ENOMEM;
1060
1061 hits = kzalloc(128, GFP_ATOMIC);
1062 if (!hits) {
1063 ret = -ENOMEM;
1064 goto out;
1065 }
1066
1067 rcu_read_lock();
1068 for_each_netdev_rcu(&init_net, tmp) {
1069 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
1070 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1071 vid = rdma_vlan_dev_vlan_id(tmp);
1072 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
1073 found = 0;
1074 free = -1;
1075 for (i = 0; i < 128; ++i) {
1076 if (free < 0 &&
1077 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1078 free = i;
1079 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
1080 hits[i] = 1;
1081 found = 1;
1082 break;
1083 }
1084 }
1085
1086 if (!found) {
1087 if (tmp == ndev &&
1088 (memcmp(&dev->iboe.gid_table[port - 1][0],
1089 &gid, sizeof gid) ||
1090 !memcmp(&dev->iboe.gid_table[port - 1][0],
1091 &zgid, sizeof gid))) {
1092 dev->iboe.gid_table[port - 1][0] = gid;
1093 ++need_update;
1094 hits[0] = 1;
1095 } else if (free >= 0) {
1096 dev->iboe.gid_table[port - 1][free] = gid;
1097 hits[free] = 1;
1098 ++need_update;
1099 }
1100 }
1101 }
1102 }
1103 rcu_read_unlock();
1104
1105 for (i = 0; i < 128; ++i)
1106 if (!hits[i]) {
1107 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1108 ++need_update;
1109 dev->iboe.gid_table[port - 1][i] = zgid;
1110 }
1111
1112 if (need_update) {
1113 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
1114 INIT_WORK(&work->work, update_gids_task);
1115 work->port = port;
1116 work->dev = dev;
1117 queue_work(wq, &work->work);
1118 } else
1119 kfree(work);
1120
1121 kfree(hits);
1122 return 0;
1123
1124 out:
1125 kfree(work);
1126 return ret;
1127 }
1128
1129 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1130 {
1131 switch (event) {
1132 case NETDEV_UP:
1133 case NETDEV_CHANGEADDR:
1134 update_ipv6_gids(dev, port, 0);
1135 break;
1136
1137 case NETDEV_DOWN:
1138 update_ipv6_gids(dev, port, 1);
1139 dev->iboe.netdevs[port - 1] = NULL;
1140 }
1141 }
1142
1143 static void netdev_added(struct mlx4_ib_dev *dev, int port)
1144 {
1145 update_ipv6_gids(dev, port, 0);
1146 }
1147
1148 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1149 {
1150 update_ipv6_gids(dev, port, 1);
1151 }
1152
1153 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1154 void *ptr)
1155 {
1156 struct net_device *dev = ptr;
1157 struct mlx4_ib_dev *ibdev;
1158 struct net_device *oldnd;
1159 struct mlx4_ib_iboe *iboe;
1160 int port;
1161
1162 if (!net_eq(dev_net(dev), &init_net))
1163 return NOTIFY_DONE;
1164
1165 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1166 iboe = &ibdev->iboe;
1167
1168 spin_lock(&iboe->lock);
1169 mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1170 oldnd = iboe->netdevs[port - 1];
1171 iboe->netdevs[port - 1] =
1172 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1173 if (oldnd != iboe->netdevs[port - 1]) {
1174 if (iboe->netdevs[port - 1])
1175 netdev_added(ibdev, port);
1176 else
1177 netdev_removed(ibdev, port);
1178 }
1179 }
1180
1181 if (dev == iboe->netdevs[0] ||
1182 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
1183 handle_en_event(ibdev, 1, event);
1184 else if (dev == iboe->netdevs[1]
1185 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
1186 handle_en_event(ibdev, 2, event);
1187
1188 spin_unlock(&iboe->lock);
1189
1190 return NOTIFY_DONE;
1191 }
1192
1193 static void init_pkeys(struct mlx4_ib_dev *ibdev)
1194 {
1195 int port;
1196 int slave;
1197 int i;
1198
1199 if (mlx4_is_master(ibdev->dev)) {
1200 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) {
1201 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1202 for (i = 0;
1203 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1204 ++i) {
1205 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
1206 /* master has the identity virt2phys pkey mapping */
1207 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
1208 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
1209 mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
1210 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
1211 }
1212 }
1213 }
1214 /* initialize pkey cache */
1215 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1216 for (i = 0;
1217 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1218 ++i)
1219 ibdev->pkeys.phys_pkey_cache[port-1][i] =
1220 (i) ? 0 : 0xFFFF;
1221 }
1222 }
1223 }
1224
1225 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1226 {
1227 char name[32];
1228 int eq_per_port = 0;
1229 int added_eqs = 0;
1230 int total_eqs = 0;
1231 int i, j, eq;
1232
1233 /* Legacy mode or comp_pool is not large enough */
1234 if (dev->caps.comp_pool == 0 ||
1235 dev->caps.num_ports > dev->caps.comp_pool)
1236 return;
1237
1238 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
1239 dev->caps.num_ports);
1240
1241 /* Init eq table */
1242 added_eqs = 0;
1243 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1244 added_eqs += eq_per_port;
1245
1246 total_eqs = dev->caps.num_comp_vectors + added_eqs;
1247
1248 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1249 if (!ibdev->eq_table)
1250 return;
1251
1252 ibdev->eq_added = added_eqs;
1253
1254 eq = 0;
1255 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1256 for (j = 0; j < eq_per_port; j++) {
1257 sprintf(name, "mlx4-ib-%d-%d@%s",
1258 i, j, dev->pdev->bus->name);
1259 /* Set IRQ for specific name (per ring) */
1260 if (mlx4_assign_eq(dev, name, NULL,
1261 &ibdev->eq_table[eq])) {
1262 /* Use legacy (same as mlx4_en driver) */
1263 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
1264 ibdev->eq_table[eq] =
1265 (eq % dev->caps.num_comp_vectors);
1266 }
1267 eq++;
1268 }
1269 }
1270
1271 /* Fill the reset of the vector with legacy EQ */
1272 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
1273 ibdev->eq_table[eq++] = i;
1274
1275 /* Advertise the new number of EQs to clients */
1276 ibdev->ib_dev.num_comp_vectors = total_eqs;
1277 }
1278
1279 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1280 {
1281 int i;
1282
1283 /* no additional eqs were added */
1284 if (!ibdev->eq_table)
1285 return;
1286
1287 /* Reset the advertised EQ number */
1288 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1289
1290 /* Free only the added eqs */
1291 for (i = 0; i < ibdev->eq_added; i++) {
1292 /* Don't free legacy eqs if used */
1293 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
1294 continue;
1295 mlx4_release_eq(dev, ibdev->eq_table[i]);
1296 }
1297
1298 kfree(ibdev->eq_table);
1299 }
1300
1301 static void *mlx4_ib_add(struct mlx4_dev *dev)
1302 {
1303 struct mlx4_ib_dev *ibdev;
1304 int num_ports = 0;
1305 int i, j;
1306 int err;
1307 struct mlx4_ib_iboe *iboe;
1308
1309 pr_info_once("%s", mlx4_ib_version);
1310
1311 mlx4_foreach_non_ib_transport_port(i, dev)
1312 num_ports++;
1313
1314 if (mlx4_is_mfunc(dev) && num_ports) {
1315 dev_err(&dev->pdev->dev, "RoCE is not supported over SRIOV as yet\n");
1316 return NULL;
1317 }
1318
1319 num_ports = 0;
1320 mlx4_foreach_ib_transport_port(i, dev)
1321 num_ports++;
1322
1323 /* No point in registering a device with no ports... */
1324 if (num_ports == 0)
1325 return NULL;
1326
1327 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1328 if (!ibdev) {
1329 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1330 return NULL;
1331 }
1332
1333 iboe = &ibdev->iboe;
1334
1335 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1336 goto err_dealloc;
1337
1338 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1339 goto err_pd;
1340
1341 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1342 PAGE_SIZE);
1343 if (!ibdev->uar_map)
1344 goto err_uar;
1345 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1346
1347 ibdev->dev = dev;
1348
1349 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1350 ibdev->ib_dev.owner = THIS_MODULE;
1351 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
1352 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
1353 ibdev->num_ports = num_ports;
1354 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
1355 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1356 ibdev->ib_dev.dma_device = &dev->pdev->dev;
1357
1358 if (dev->caps.userspace_caps)
1359 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
1360 else
1361 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
1362
1363 ibdev->ib_dev.uverbs_cmd_mask =
1364 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1365 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1366 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1367 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1368 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1369 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1370 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1371 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1372 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1373 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1374 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1375 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1376 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1377 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1378 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1379 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1380 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1381 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1382 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1383 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1384 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
1385 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1386 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1387
1388 ibdev->ib_dev.query_device = mlx4_ib_query_device;
1389 ibdev->ib_dev.query_port = mlx4_ib_query_port;
1390 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
1391 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
1392 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
1393 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
1394 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
1395 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
1396 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
1397 ibdev->ib_dev.mmap = mlx4_ib_mmap;
1398 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
1399 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
1400 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
1401 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
1402 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
1403 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
1404 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
1405 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
1406 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
1407 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
1408 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
1409 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
1410 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
1411 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
1412 ibdev->ib_dev.post_send = mlx4_ib_post_send;
1413 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
1414 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
1415 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
1416 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
1417 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
1418 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
1419 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
1420 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
1421 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
1422 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
1423 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1424 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1425 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
1426 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
1427 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
1428 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
1429
1430 if (!mlx4_is_slave(ibdev->dev)) {
1431 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
1432 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
1433 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
1434 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
1435 }
1436
1437 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
1438 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
1439 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
1440 ibdev->ib_dev.uverbs_cmd_mask |=
1441 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1442 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1443 }
1444
1445 mlx4_ib_alloc_eqs(dev, ibdev);
1446
1447 spin_lock_init(&iboe->lock);
1448
1449 if (init_node_data(ibdev))
1450 goto err_map;
1451
1452 for (i = 0; i < ibdev->num_ports; ++i) {
1453 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
1454 IB_LINK_LAYER_ETHERNET) {
1455 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
1456 if (err)
1457 ibdev->counters[i] = -1;
1458 } else
1459 ibdev->counters[i] = -1;
1460 }
1461
1462 spin_lock_init(&ibdev->sm_lock);
1463 mutex_init(&ibdev->cap_mask_mutex);
1464
1465 if (ib_register_device(&ibdev->ib_dev, NULL))
1466 goto err_counter;
1467
1468 if (mlx4_ib_mad_init(ibdev))
1469 goto err_reg;
1470
1471 if (mlx4_ib_init_sriov(ibdev))
1472 goto err_mad;
1473
1474 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1475 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1476 err = register_netdevice_notifier(&iboe->nb);
1477 if (err)
1478 goto err_sriov;
1479 }
1480
1481 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
1482 if (device_create_file(&ibdev->ib_dev.dev,
1483 mlx4_class_attributes[j]))
1484 goto err_notif;
1485 }
1486
1487 ibdev->ib_active = true;
1488
1489 if (mlx4_is_mfunc(ibdev->dev))
1490 init_pkeys(ibdev);
1491
1492 /* create paravirt contexts for any VFs which are active */
1493 if (mlx4_is_master(ibdev->dev)) {
1494 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
1495 if (j == mlx4_master_func_num(ibdev->dev))
1496 continue;
1497 if (mlx4_is_slave_active(ibdev->dev, j))
1498 do_slave_init(ibdev, j, 1);
1499 }
1500 }
1501 return ibdev;
1502
1503 err_notif:
1504 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1505 pr_warn("failure unregistering notifier\n");
1506 flush_workqueue(wq);
1507
1508 err_sriov:
1509 mlx4_ib_close_sriov(ibdev);
1510
1511 err_mad:
1512 mlx4_ib_mad_cleanup(ibdev);
1513
1514 err_reg:
1515 ib_unregister_device(&ibdev->ib_dev);
1516
1517 err_counter:
1518 for (; i; --i)
1519 if (ibdev->counters[i - 1] != -1)
1520 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1521
1522 err_map:
1523 iounmap(ibdev->uar_map);
1524
1525 err_uar:
1526 mlx4_uar_free(dev, &ibdev->priv_uar);
1527
1528 err_pd:
1529 mlx4_pd_free(dev, ibdev->priv_pdn);
1530
1531 err_dealloc:
1532 ib_dealloc_device(&ibdev->ib_dev);
1533
1534 return NULL;
1535 }
1536
1537 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1538 {
1539 struct mlx4_ib_dev *ibdev = ibdev_ptr;
1540 int p;
1541
1542 mlx4_ib_close_sriov(ibdev);
1543 mlx4_ib_mad_cleanup(ibdev);
1544 ib_unregister_device(&ibdev->ib_dev);
1545 if (ibdev->iboe.nb.notifier_call) {
1546 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1547 pr_warn("failure unregistering notifier\n");
1548 ibdev->iboe.nb.notifier_call = NULL;
1549 }
1550 iounmap(ibdev->uar_map);
1551 for (p = 0; p < ibdev->num_ports; ++p)
1552 if (ibdev->counters[p] != -1)
1553 mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
1554 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1555 mlx4_CLOSE_PORT(dev, p);
1556
1557 mlx4_ib_free_eqs(dev, ibdev);
1558
1559 mlx4_uar_free(dev, &ibdev->priv_uar);
1560 mlx4_pd_free(dev, ibdev->priv_pdn);
1561 ib_dealloc_device(&ibdev->ib_dev);
1562 }
1563
1564 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
1565 {
1566 struct mlx4_ib_demux_work **dm = NULL;
1567 struct mlx4_dev *dev = ibdev->dev;
1568 int i;
1569 unsigned long flags;
1570
1571 if (!mlx4_is_master(dev))
1572 return;
1573
1574 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC);
1575 if (!dm) {
1576 pr_err("failed to allocate memory for tunneling qp update\n");
1577 goto out;
1578 }
1579
1580 for (i = 0; i < dev->caps.num_ports; i++) {
1581 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
1582 if (!dm[i]) {
1583 pr_err("failed to allocate memory for tunneling qp update work struct\n");
1584 for (i = 0; i < dev->caps.num_ports; i++) {
1585 if (dm[i])
1586 kfree(dm[i]);
1587 }
1588 goto out;
1589 }
1590 }
1591 /* initialize or tear down tunnel QPs for the slave */
1592 for (i = 0; i < dev->caps.num_ports; i++) {
1593 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
1594 dm[i]->port = i + 1;
1595 dm[i]->slave = slave;
1596 dm[i]->do_init = do_init;
1597 dm[i]->dev = ibdev;
1598 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
1599 if (!ibdev->sriov.is_going_down)
1600 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
1601 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
1602 }
1603 out:
1604 if (dm)
1605 kfree(dm);
1606 return;
1607 }
1608
1609 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1610 enum mlx4_dev_event event, unsigned long param)
1611 {
1612 struct ib_event ibev;
1613 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1614 struct mlx4_eqe *eqe = NULL;
1615 struct ib_event_work *ew;
1616 int p = 0;
1617
1618 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
1619 eqe = (struct mlx4_eqe *)param;
1620 else
1621 p = (int) param;
1622
1623 switch (event) {
1624 case MLX4_DEV_EVENT_PORT_UP:
1625 if (p > ibdev->num_ports)
1626 return;
1627 if (mlx4_is_master(dev) &&
1628 rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
1629 IB_LINK_LAYER_INFINIBAND) {
1630 mlx4_ib_invalidate_all_guid_record(ibdev, p);
1631 }
1632 ibev.event = IB_EVENT_PORT_ACTIVE;
1633 break;
1634
1635 case MLX4_DEV_EVENT_PORT_DOWN:
1636 if (p > ibdev->num_ports)
1637 return;
1638 ibev.event = IB_EVENT_PORT_ERR;
1639 break;
1640
1641 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1642 ibdev->ib_active = false;
1643 ibev.event = IB_EVENT_DEVICE_FATAL;
1644 break;
1645
1646 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
1647 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
1648 if (!ew) {
1649 pr_err("failed to allocate memory for events work\n");
1650 break;
1651 }
1652
1653 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
1654 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
1655 ew->ib_dev = ibdev;
1656 /* need to queue only for port owner, which uses GEN_EQE */
1657 if (mlx4_is_master(dev))
1658 queue_work(wq, &ew->work);
1659 else
1660 handle_port_mgmt_change_event(&ew->work);
1661 return;
1662
1663 case MLX4_DEV_EVENT_SLAVE_INIT:
1664 /* here, p is the slave id */
1665 do_slave_init(ibdev, p, 1);
1666 return;
1667
1668 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
1669 /* here, p is the slave id */
1670 do_slave_init(ibdev, p, 0);
1671 return;
1672
1673 default:
1674 return;
1675 }
1676
1677 ibev.device = ibdev_ptr;
1678 ibev.element.port_num = (u8) p;
1679
1680 ib_dispatch_event(&ibev);
1681 }
1682
1683 static struct mlx4_interface mlx4_ib_interface = {
1684 .add = mlx4_ib_add,
1685 .remove = mlx4_ib_remove,
1686 .event = mlx4_ib_event,
1687 .protocol = MLX4_PROT_IB_IPV6
1688 };
1689
1690 static int __init mlx4_ib_init(void)
1691 {
1692 int err;
1693
1694 wq = create_singlethread_workqueue("mlx4_ib");
1695 if (!wq)
1696 return -ENOMEM;
1697
1698 err = mlx4_ib_mcg_init();
1699 if (err)
1700 goto clean_wq;
1701
1702 err = mlx4_register_interface(&mlx4_ib_interface);
1703 if (err)
1704 goto clean_mcg;
1705
1706 return 0;
1707
1708 clean_mcg:
1709 mlx4_ib_mcg_destroy();
1710
1711 clean_wq:
1712 destroy_workqueue(wq);
1713 return err;
1714 }
1715
1716 static void __exit mlx4_ib_cleanup(void)
1717 {
1718 mlx4_unregister_interface(&mlx4_ib_interface);
1719 mlx4_ib_mcg_destroy();
1720 destroy_workqueue(wq);
1721 }
1722
1723 module_init(mlx4_ib_init);
1724 module_exit(mlx4_ib_cleanup);
Linux with added FPC-III support