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Linux 3.11-rc3
[cris-mirror.git] / drivers / infiniband / hw / mlx4 / main.c
bloba188d31785590e9cf59c7f3bf77926a11817e4b7
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 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
141 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
142 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
143 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
144 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
145 else
146 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
147 }
148
149 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
150 0xffffff;
151 props->vendor_part_id = dev->dev->pdev->device;
152 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
153 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
154
155 props->max_mr_size = ~0ull;
156 props->page_size_cap = dev->dev->caps.page_size_cap;
157 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
158 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
159 props->max_sge = min(dev->dev->caps.max_sq_sg,
160 dev->dev->caps.max_rq_sg);
161 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
162 props->max_cqe = dev->dev->caps.max_cqes;
163 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
164 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
165 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
166 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
167 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
168 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
169 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
170 props->max_srq_sge = dev->dev->caps.max_srq_sge;
171 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
172 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
173 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
174 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
175 props->masked_atomic_cap = props->atomic_cap;
176 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
177 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
178 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
179 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
180 props->max_mcast_grp;
181 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
182
183 out:
184 kfree(in_mad);
185 kfree(out_mad);
186
187 return err;
188 }
189
190 static enum rdma_link_layer
191 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
192 {
193 struct mlx4_dev *dev = to_mdev(device)->dev;
194
195 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
196 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
197 }
198
199 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
200 struct ib_port_attr *props, int netw_view)
201 {
202 struct ib_smp *in_mad = NULL;
203 struct ib_smp *out_mad = NULL;
204 int ext_active_speed;
205 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
206 int err = -ENOMEM;
207
208 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
209 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
210 if (!in_mad || !out_mad)
211 goto out;
212
213 init_query_mad(in_mad);
214 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
215 in_mad->attr_mod = cpu_to_be32(port);
216
217 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
218 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
219
220 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
221 in_mad, out_mad);
222 if (err)
223 goto out;
224
225
226 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
227 props->lmc = out_mad->data[34] & 0x7;
228 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
229 props->sm_sl = out_mad->data[36] & 0xf;
230 props->state = out_mad->data[32] & 0xf;
231 props->phys_state = out_mad->data[33] >> 4;
232 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
233 if (netw_view)
234 props->gid_tbl_len = out_mad->data[50];
235 else
236 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
237 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
238 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
239 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
240 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
241 props->active_width = out_mad->data[31] & 0xf;
242 props->active_speed = out_mad->data[35] >> 4;
243 props->max_mtu = out_mad->data[41] & 0xf;
244 props->active_mtu = out_mad->data[36] >> 4;
245 props->subnet_timeout = out_mad->data[51] & 0x1f;
246 props->max_vl_num = out_mad->data[37] >> 4;
247 props->init_type_reply = out_mad->data[41] >> 4;
248
249 /* Check if extended speeds (EDR/FDR/...) are supported */
250 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
251 ext_active_speed = out_mad->data[62] >> 4;
252
253 switch (ext_active_speed) {
254 case 1:
255 props->active_speed = IB_SPEED_FDR;
256 break;
257 case 2:
258 props->active_speed = IB_SPEED_EDR;
259 break;
260 }
261 }
262
263 /* If reported active speed is QDR, check if is FDR-10 */
264 if (props->active_speed == IB_SPEED_QDR) {
265 init_query_mad(in_mad);
266 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
267 in_mad->attr_mod = cpu_to_be32(port);
268
269 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
270 NULL, NULL, in_mad, out_mad);
271 if (err)
272 goto out;
273
274 /* Checking LinkSpeedActive for FDR-10 */
275 if (out_mad->data[15] & 0x1)
276 props->active_speed = IB_SPEED_FDR10;
277 }
278
279 /* Avoid wrong speed value returned by FW if the IB link is down. */
280 if (props->state == IB_PORT_DOWN)
281 props->active_speed = IB_SPEED_SDR;
282
283 out:
284 kfree(in_mad);
285 kfree(out_mad);
286 return err;
287 }
288
289 static u8 state_to_phys_state(enum ib_port_state state)
290 {
291 return state == IB_PORT_ACTIVE ? 5 : 3;
292 }
293
294 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
295 struct ib_port_attr *props, int netw_view)
296 {
297
298 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
299 struct mlx4_ib_iboe *iboe = &mdev->iboe;
300 struct net_device *ndev;
301 enum ib_mtu tmp;
302 struct mlx4_cmd_mailbox *mailbox;
303 int err = 0;
304
305 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
306 if (IS_ERR(mailbox))
307 return PTR_ERR(mailbox);
308
309 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
310 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
311 MLX4_CMD_WRAPPED);
312 if (err)
313 goto out;
314
315 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ?
316 IB_WIDTH_4X : IB_WIDTH_1X;
317 props->active_speed = IB_SPEED_QDR;
318 props->port_cap_flags = IB_PORT_CM_SUP;
319 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
320 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
321 props->pkey_tbl_len = 1;
322 props->max_mtu = IB_MTU_4096;
323 props->max_vl_num = 2;
324 props->state = IB_PORT_DOWN;
325 props->phys_state = state_to_phys_state(props->state);
326 props->active_mtu = IB_MTU_256;
327 spin_lock(&iboe->lock);
328 ndev = iboe->netdevs[port - 1];
329 if (!ndev)
330 goto out_unlock;
331
332 tmp = iboe_get_mtu(ndev->mtu);
333 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
334
335 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
336 IB_PORT_ACTIVE : IB_PORT_DOWN;
337 props->phys_state = state_to_phys_state(props->state);
338 out_unlock:
339 spin_unlock(&iboe->lock);
340 out:
341 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
342 return err;
343 }
344
345 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
346 struct ib_port_attr *props, int netw_view)
347 {
348 int err;
349
350 memset(props, 0, sizeof *props);
351
352 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
353 ib_link_query_port(ibdev, port, props, netw_view) :
354 eth_link_query_port(ibdev, port, props, netw_view);
355
356 return err;
357 }
358
359 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
360 struct ib_port_attr *props)
361 {
362 /* returns host view */
363 return __mlx4_ib_query_port(ibdev, port, props, 0);
364 }
365
366 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
367 union ib_gid *gid, int netw_view)
368 {
369 struct ib_smp *in_mad = NULL;
370 struct ib_smp *out_mad = NULL;
371 int err = -ENOMEM;
372 struct mlx4_ib_dev *dev = to_mdev(ibdev);
373 int clear = 0;
374 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
375
376 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
377 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
378 if (!in_mad || !out_mad)
379 goto out;
380
381 init_query_mad(in_mad);
382 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
383 in_mad->attr_mod = cpu_to_be32(port);
384
385 if (mlx4_is_mfunc(dev->dev) && netw_view)
386 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
387
388 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
389 if (err)
390 goto out;
391
392 memcpy(gid->raw, out_mad->data + 8, 8);
393
394 if (mlx4_is_mfunc(dev->dev) && !netw_view) {
395 if (index) {
396 /* For any index > 0, return the null guid */
397 err = 0;
398 clear = 1;
399 goto out;
400 }
401 }
402
403 init_query_mad(in_mad);
404 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
405 in_mad->attr_mod = cpu_to_be32(index / 8);
406
407 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
408 NULL, NULL, in_mad, out_mad);
409 if (err)
410 goto out;
411
412 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
413
414 out:
415 if (clear)
416 memset(gid->raw + 8, 0, 8);
417 kfree(in_mad);
418 kfree(out_mad);
419 return err;
420 }
421
422 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
423 union ib_gid *gid)
424 {
425 struct mlx4_ib_dev *dev = to_mdev(ibdev);
426
427 *gid = dev->iboe.gid_table[port - 1][index];
428
429 return 0;
430 }
431
432 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
433 union ib_gid *gid)
434 {
435 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
436 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
437 else
438 return iboe_query_gid(ibdev, port, index, gid);
439 }
440
441 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
442 u16 *pkey, int netw_view)
443 {
444 struct ib_smp *in_mad = NULL;
445 struct ib_smp *out_mad = NULL;
446 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
447 int err = -ENOMEM;
448
449 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
450 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
451 if (!in_mad || !out_mad)
452 goto out;
453
454 init_query_mad(in_mad);
455 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
456 in_mad->attr_mod = cpu_to_be32(index / 32);
457
458 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
459 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
460
461 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
462 in_mad, out_mad);
463 if (err)
464 goto out;
465
466 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
467
468 out:
469 kfree(in_mad);
470 kfree(out_mad);
471 return err;
472 }
473
474 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
475 {
476 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
477 }
478
479 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
480 struct ib_device_modify *props)
481 {
482 struct mlx4_cmd_mailbox *mailbox;
483 unsigned long flags;
484
485 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
486 return -EOPNOTSUPP;
487
488 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
489 return 0;
490
491 if (mlx4_is_slave(to_mdev(ibdev)->dev))
492 return -EOPNOTSUPP;
493
494 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
495 memcpy(ibdev->node_desc, props->node_desc, 64);
496 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
497
498 /*
499 * If possible, pass node desc to FW, so it can generate
500 * a 144 trap. If cmd fails, just ignore.
501 */
502 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
503 if (IS_ERR(mailbox))
504 return 0;
505
506 memset(mailbox->buf, 0, 256);
507 memcpy(mailbox->buf, props->node_desc, 64);
508 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
509 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
510
511 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
512
513 return 0;
514 }
515
516 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
517 u32 cap_mask)
518 {
519 struct mlx4_cmd_mailbox *mailbox;
520 int err;
521 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
522
523 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
524 if (IS_ERR(mailbox))
525 return PTR_ERR(mailbox);
526
527 memset(mailbox->buf, 0, 256);
528
529 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
530 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
531 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
532 } else {
533 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
534 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
535 }
536
537 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
538 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
539
540 mlx4_free_cmd_mailbox(dev->dev, mailbox);
541 return err;
542 }
543
544 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
545 struct ib_port_modify *props)
546 {
547 struct ib_port_attr attr;
548 u32 cap_mask;
549 int err;
550
551 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
552
553 err = mlx4_ib_query_port(ibdev, port, &attr);
554 if (err)
555 goto out;
556
557 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
558 ~props->clr_port_cap_mask;
559
560 err = mlx4_SET_PORT(to_mdev(ibdev), port,
561 !!(mask & IB_PORT_RESET_QKEY_CNTR),
562 cap_mask);
563
564 out:
565 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
566 return err;
567 }
568
569 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
570 struct ib_udata *udata)
571 {
572 struct mlx4_ib_dev *dev = to_mdev(ibdev);
573 struct mlx4_ib_ucontext *context;
574 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
575 struct mlx4_ib_alloc_ucontext_resp resp;
576 int err;
577
578 if (!dev->ib_active)
579 return ERR_PTR(-EAGAIN);
580
581 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
582 resp_v3.qp_tab_size = dev->dev->caps.num_qps;
583 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size;
584 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
585 } else {
586 resp.dev_caps = dev->dev->caps.userspace_caps;
587 resp.qp_tab_size = dev->dev->caps.num_qps;
588 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
589 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
590 resp.cqe_size = dev->dev->caps.cqe_size;
591 }
592
593 context = kmalloc(sizeof *context, GFP_KERNEL);
594 if (!context)
595 return ERR_PTR(-ENOMEM);
596
597 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
598 if (err) {
599 kfree(context);
600 return ERR_PTR(err);
601 }
602
603 INIT_LIST_HEAD(&context->db_page_list);
604 mutex_init(&context->db_page_mutex);
605
606 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
607 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
608 else
609 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
610
611 if (err) {
612 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
613 kfree(context);
614 return ERR_PTR(-EFAULT);
615 }
616
617 return &context->ibucontext;
618 }
619
620 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
621 {
622 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
623
624 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
625 kfree(context);
626
627 return 0;
628 }
629
630 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
631 {
632 struct mlx4_ib_dev *dev = to_mdev(context->device);
633
634 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
635 return -EINVAL;
636
637 if (vma->vm_pgoff == 0) {
638 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
639
640 if (io_remap_pfn_range(vma, vma->vm_start,
641 to_mucontext(context)->uar.pfn,
642 PAGE_SIZE, vma->vm_page_prot))
643 return -EAGAIN;
644 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
645 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
646
647 if (io_remap_pfn_range(vma, vma->vm_start,
648 to_mucontext(context)->uar.pfn +
649 dev->dev->caps.num_uars,
650 PAGE_SIZE, vma->vm_page_prot))
651 return -EAGAIN;
652 } else
653 return -EINVAL;
654
655 return 0;
656 }
657
658 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
659 struct ib_ucontext *context,
660 struct ib_udata *udata)
661 {
662 struct mlx4_ib_pd *pd;
663 int err;
664
665 pd = kmalloc(sizeof *pd, GFP_KERNEL);
666 if (!pd)
667 return ERR_PTR(-ENOMEM);
668
669 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
670 if (err) {
671 kfree(pd);
672 return ERR_PTR(err);
673 }
674
675 if (context)
676 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
677 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
678 kfree(pd);
679 return ERR_PTR(-EFAULT);
680 }
681
682 return &pd->ibpd;
683 }
684
685 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
686 {
687 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
688 kfree(pd);
689
690 return 0;
691 }
692
693 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
694 struct ib_ucontext *context,
695 struct ib_udata *udata)
696 {
697 struct mlx4_ib_xrcd *xrcd;
698 int err;
699
700 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
701 return ERR_PTR(-ENOSYS);
702
703 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
704 if (!xrcd)
705 return ERR_PTR(-ENOMEM);
706
707 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
708 if (err)
709 goto err1;
710
711 xrcd->pd = ib_alloc_pd(ibdev);
712 if (IS_ERR(xrcd->pd)) {
713 err = PTR_ERR(xrcd->pd);
714 goto err2;
715 }
716
717 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
718 if (IS_ERR(xrcd->cq)) {
719 err = PTR_ERR(xrcd->cq);
720 goto err3;
721 }
722
723 return &xrcd->ibxrcd;
724
725 err3:
726 ib_dealloc_pd(xrcd->pd);
727 err2:
728 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
729 err1:
730 kfree(xrcd);
731 return ERR_PTR(err);
732 }
733
734 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
735 {
736 ib_destroy_cq(to_mxrcd(xrcd)->cq);
737 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
738 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
739 kfree(xrcd);
740
741 return 0;
742 }
743
744 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
745 {
746 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
747 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
748 struct mlx4_ib_gid_entry *ge;
749
750 ge = kzalloc(sizeof *ge, GFP_KERNEL);
751 if (!ge)
752 return -ENOMEM;
753
754 ge->gid = *gid;
755 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
756 ge->port = mqp->port;
757 ge->added = 1;
758 }
759
760 mutex_lock(&mqp->mutex);
761 list_add_tail(&ge->list, &mqp->gid_list);
762 mutex_unlock(&mqp->mutex);
763
764 return 0;
765 }
766
767 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
768 union ib_gid *gid)
769 {
770 u8 mac[6];
771 struct net_device *ndev;
772 int ret = 0;
773
774 if (!mqp->port)
775 return 0;
776
777 spin_lock(&mdev->iboe.lock);
778 ndev = mdev->iboe.netdevs[mqp->port - 1];
779 if (ndev)
780 dev_hold(ndev);
781 spin_unlock(&mdev->iboe.lock);
782
783 if (ndev) {
784 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
785 rtnl_lock();
786 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
787 ret = 1;
788 rtnl_unlock();
789 dev_put(ndev);
790 }
791
792 return ret;
793 }
794
795 struct mlx4_ib_steering {
796 struct list_head list;
797 u64 reg_id;
798 union ib_gid gid;
799 };
800
801 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
802 {
803 int err;
804 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
805 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
806 u64 reg_id;
807 struct mlx4_ib_steering *ib_steering = NULL;
808
809 if (mdev->dev->caps.steering_mode ==
810 MLX4_STEERING_MODE_DEVICE_MANAGED) {
811 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
812 if (!ib_steering)
813 return -ENOMEM;
814 }
815
816 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
817 !!(mqp->flags &
818 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
819 MLX4_PROT_IB_IPV6, &reg_id);
820 if (err)
821 goto err_malloc;
822
823 err = add_gid_entry(ibqp, gid);
824 if (err)
825 goto err_add;
826
827 if (ib_steering) {
828 memcpy(ib_steering->gid.raw, gid->raw, 16);
829 ib_steering->reg_id = reg_id;
830 mutex_lock(&mqp->mutex);
831 list_add(&ib_steering->list, &mqp->steering_rules);
832 mutex_unlock(&mqp->mutex);
833 }
834 return 0;
835
836 err_add:
837 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
838 MLX4_PROT_IB_IPV6, reg_id);
839 err_malloc:
840 kfree(ib_steering);
841
842 return err;
843 }
844
845 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
846 {
847 struct mlx4_ib_gid_entry *ge;
848 struct mlx4_ib_gid_entry *tmp;
849 struct mlx4_ib_gid_entry *ret = NULL;
850
851 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
852 if (!memcmp(raw, ge->gid.raw, 16)) {
853 ret = ge;
854 break;
855 }
856 }
857
858 return ret;
859 }
860
861 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
862 {
863 int err;
864 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
865 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
866 u8 mac[6];
867 struct net_device *ndev;
868 struct mlx4_ib_gid_entry *ge;
869 u64 reg_id = 0;
870
871 if (mdev->dev->caps.steering_mode ==
872 MLX4_STEERING_MODE_DEVICE_MANAGED) {
873 struct mlx4_ib_steering *ib_steering;
874
875 mutex_lock(&mqp->mutex);
876 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
877 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
878 list_del(&ib_steering->list);
879 break;
880 }
881 }
882 mutex_unlock(&mqp->mutex);
883 if (&ib_steering->list == &mqp->steering_rules) {
884 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
885 return -EINVAL;
886 }
887 reg_id = ib_steering->reg_id;
888 kfree(ib_steering);
889 }
890
891 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
892 MLX4_PROT_IB_IPV6, reg_id);
893 if (err)
894 return err;
895
896 mutex_lock(&mqp->mutex);
897 ge = find_gid_entry(mqp, gid->raw);
898 if (ge) {
899 spin_lock(&mdev->iboe.lock);
900 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
901 if (ndev)
902 dev_hold(ndev);
903 spin_unlock(&mdev->iboe.lock);
904 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
905 if (ndev) {
906 rtnl_lock();
907 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
908 rtnl_unlock();
909 dev_put(ndev);
910 }
911 list_del(&ge->list);
912 kfree(ge);
913 } else
914 pr_warn("could not find mgid entry\n");
915
916 mutex_unlock(&mqp->mutex);
917
918 return 0;
919 }
920
921 static int init_node_data(struct mlx4_ib_dev *dev)
922 {
923 struct ib_smp *in_mad = NULL;
924 struct ib_smp *out_mad = NULL;
925 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
926 int err = -ENOMEM;
927
928 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
929 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
930 if (!in_mad || !out_mad)
931 goto out;
932
933 init_query_mad(in_mad);
934 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
935 if (mlx4_is_master(dev->dev))
936 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
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 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
943
944 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
945
946 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
947 if (err)
948 goto out;
949
950 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
951 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
952
953 out:
954 kfree(in_mad);
955 kfree(out_mad);
956 return err;
957 }
958
959 static ssize_t show_hca(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, "MT%d\n", dev->dev->pdev->device);
965 }
966
967 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
968 char *buf)
969 {
970 struct mlx4_ib_dev *dev =
971 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
972 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
973 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
974 (int) dev->dev->caps.fw_ver & 0xffff);
975 }
976
977 static ssize_t show_rev(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, "%x\n", dev->dev->rev_id);
983 }
984
985 static ssize_t show_board(struct device *device, struct device_attribute *attr,
986 char *buf)
987 {
988 struct mlx4_ib_dev *dev =
989 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
990 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
991 dev->dev->board_id);
992 }
993
994 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
995 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
996 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
997 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
998
999 static struct device_attribute *mlx4_class_attributes[] = {
1000 &dev_attr_hw_rev,
1001 &dev_attr_fw_ver,
1002 &dev_attr_hca_type,
1003 &dev_attr_board_id
1004 };
1005
1006 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
1007 {
1008 memcpy(eui, dev->dev_addr, 3);
1009 memcpy(eui + 5, dev->dev_addr + 3, 3);
1010 if (vlan_id < 0x1000) {
1011 eui[3] = vlan_id >> 8;
1012 eui[4] = vlan_id & 0xff;
1013 } else {
1014 eui[3] = 0xff;
1015 eui[4] = 0xfe;
1016 }
1017 eui[0] ^= 2;
1018 }
1019
1020 static void update_gids_task(struct work_struct *work)
1021 {
1022 struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1023 struct mlx4_cmd_mailbox *mailbox;
1024 union ib_gid *gids;
1025 int err;
1026 struct mlx4_dev *dev = gw->dev->dev;
1027
1028 mailbox = mlx4_alloc_cmd_mailbox(dev);
1029 if (IS_ERR(mailbox)) {
1030 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1031 return;
1032 }
1033
1034 gids = mailbox->buf;
1035 memcpy(gids, gw->gids, sizeof gw->gids);
1036
1037 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1038 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1039 MLX4_CMD_WRAPPED);
1040 if (err)
1041 pr_warn("set port command failed\n");
1042 else {
1043 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
1044 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
1045 }
1046
1047 mlx4_free_cmd_mailbox(dev, mailbox);
1048 kfree(gw);
1049 }
1050
1051 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
1052 {
1053 struct net_device *ndev = dev->iboe.netdevs[port - 1];
1054 struct update_gid_work *work;
1055 struct net_device *tmp;
1056 int i;
1057 u8 *hits;
1058 int ret;
1059 union ib_gid gid;
1060 int free;
1061 int found;
1062 int need_update = 0;
1063 u16 vid;
1064
1065 work = kzalloc(sizeof *work, GFP_ATOMIC);
1066 if (!work)
1067 return -ENOMEM;
1068
1069 hits = kzalloc(128, GFP_ATOMIC);
1070 if (!hits) {
1071 ret = -ENOMEM;
1072 goto out;
1073 }
1074
1075 rcu_read_lock();
1076 for_each_netdev_rcu(&init_net, tmp) {
1077 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
1078 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1079 vid = rdma_vlan_dev_vlan_id(tmp);
1080 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
1081 found = 0;
1082 free = -1;
1083 for (i = 0; i < 128; ++i) {
1084 if (free < 0 &&
1085 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1086 free = i;
1087 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
1088 hits[i] = 1;
1089 found = 1;
1090 break;
1091 }
1092 }
1093
1094 if (!found) {
1095 if (tmp == ndev &&
1096 (memcmp(&dev->iboe.gid_table[port - 1][0],
1097 &gid, sizeof gid) ||
1098 !memcmp(&dev->iboe.gid_table[port - 1][0],
1099 &zgid, sizeof gid))) {
1100 dev->iboe.gid_table[port - 1][0] = gid;
1101 ++need_update;
1102 hits[0] = 1;
1103 } else if (free >= 0) {
1104 dev->iboe.gid_table[port - 1][free] = gid;
1105 hits[free] = 1;
1106 ++need_update;
1107 }
1108 }
1109 }
1110 }
1111 rcu_read_unlock();
1112
1113 for (i = 0; i < 128; ++i)
1114 if (!hits[i]) {
1115 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1116 ++need_update;
1117 dev->iboe.gid_table[port - 1][i] = zgid;
1118 }
1119
1120 if (need_update) {
1121 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
1122 INIT_WORK(&work->work, update_gids_task);
1123 work->port = port;
1124 work->dev = dev;
1125 queue_work(wq, &work->work);
1126 } else
1127 kfree(work);
1128
1129 kfree(hits);
1130 return 0;
1131
1132 out:
1133 kfree(work);
1134 return ret;
1135 }
1136
1137 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1138 {
1139 switch (event) {
1140 case NETDEV_UP:
1141 case NETDEV_CHANGEADDR:
1142 update_ipv6_gids(dev, port, 0);
1143 break;
1144
1145 case NETDEV_DOWN:
1146 update_ipv6_gids(dev, port, 1);
1147 dev->iboe.netdevs[port - 1] = NULL;
1148 }
1149 }
1150
1151 static void netdev_added(struct mlx4_ib_dev *dev, int port)
1152 {
1153 update_ipv6_gids(dev, port, 0);
1154 }
1155
1156 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1157 {
1158 update_ipv6_gids(dev, port, 1);
1159 }
1160
1161 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1162 void *ptr)
1163 {
1164 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1165 struct mlx4_ib_dev *ibdev;
1166 struct net_device *oldnd;
1167 struct mlx4_ib_iboe *iboe;
1168 int port;
1169
1170 if (!net_eq(dev_net(dev), &init_net))
1171 return NOTIFY_DONE;
1172
1173 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1174 iboe = &ibdev->iboe;
1175
1176 spin_lock(&iboe->lock);
1177 mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1178 oldnd = iboe->netdevs[port - 1];
1179 iboe->netdevs[port - 1] =
1180 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1181 if (oldnd != iboe->netdevs[port - 1]) {
1182 if (iboe->netdevs[port - 1])
1183 netdev_added(ibdev, port);
1184 else
1185 netdev_removed(ibdev, port);
1186 }
1187 }
1188
1189 if (dev == iboe->netdevs[0] ||
1190 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
1191 handle_en_event(ibdev, 1, event);
1192 else if (dev == iboe->netdevs[1]
1193 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
1194 handle_en_event(ibdev, 2, event);
1195
1196 spin_unlock(&iboe->lock);
1197
1198 return NOTIFY_DONE;
1199 }
1200
1201 static void init_pkeys(struct mlx4_ib_dev *ibdev)
1202 {
1203 int port;
1204 int slave;
1205 int i;
1206
1207 if (mlx4_is_master(ibdev->dev)) {
1208 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) {
1209 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1210 for (i = 0;
1211 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1212 ++i) {
1213 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
1214 /* master has the identity virt2phys pkey mapping */
1215 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
1216 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
1217 mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
1218 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
1219 }
1220 }
1221 }
1222 /* initialize pkey cache */
1223 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1224 for (i = 0;
1225 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1226 ++i)
1227 ibdev->pkeys.phys_pkey_cache[port-1][i] =
1228 (i) ? 0 : 0xFFFF;
1229 }
1230 }
1231 }
1232
1233 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1234 {
1235 char name[32];
1236 int eq_per_port = 0;
1237 int added_eqs = 0;
1238 int total_eqs = 0;
1239 int i, j, eq;
1240
1241 /* Legacy mode or comp_pool is not large enough */
1242 if (dev->caps.comp_pool == 0 ||
1243 dev->caps.num_ports > dev->caps.comp_pool)
1244 return;
1245
1246 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
1247 dev->caps.num_ports);
1248
1249 /* Init eq table */
1250 added_eqs = 0;
1251 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1252 added_eqs += eq_per_port;
1253
1254 total_eqs = dev->caps.num_comp_vectors + added_eqs;
1255
1256 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1257 if (!ibdev->eq_table)
1258 return;
1259
1260 ibdev->eq_added = added_eqs;
1261
1262 eq = 0;
1263 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1264 for (j = 0; j < eq_per_port; j++) {
1265 sprintf(name, "mlx4-ib-%d-%d@%s",
1266 i, j, dev->pdev->bus->name);
1267 /* Set IRQ for specific name (per ring) */
1268 if (mlx4_assign_eq(dev, name, NULL,
1269 &ibdev->eq_table[eq])) {
1270 /* Use legacy (same as mlx4_en driver) */
1271 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
1272 ibdev->eq_table[eq] =
1273 (eq % dev->caps.num_comp_vectors);
1274 }
1275 eq++;
1276 }
1277 }
1278
1279 /* Fill the reset of the vector with legacy EQ */
1280 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
1281 ibdev->eq_table[eq++] = i;
1282
1283 /* Advertise the new number of EQs to clients */
1284 ibdev->ib_dev.num_comp_vectors = total_eqs;
1285 }
1286
1287 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1288 {
1289 int i;
1290
1291 /* no additional eqs were added */
1292 if (!ibdev->eq_table)
1293 return;
1294
1295 /* Reset the advertised EQ number */
1296 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1297
1298 /* Free only the added eqs */
1299 for (i = 0; i < ibdev->eq_added; i++) {
1300 /* Don't free legacy eqs if used */
1301 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
1302 continue;
1303 mlx4_release_eq(dev, ibdev->eq_table[i]);
1304 }
1305
1306 kfree(ibdev->eq_table);
1307 }
1308
1309 static void *mlx4_ib_add(struct mlx4_dev *dev)
1310 {
1311 struct mlx4_ib_dev *ibdev;
1312 int num_ports = 0;
1313 int i, j;
1314 int err;
1315 struct mlx4_ib_iboe *iboe;
1316
1317 pr_info_once("%s", mlx4_ib_version);
1318
1319 mlx4_foreach_non_ib_transport_port(i, dev)
1320 num_ports++;
1321
1322 if (mlx4_is_mfunc(dev) && num_ports) {
1323 dev_err(&dev->pdev->dev, "RoCE is not supported over SRIOV as yet\n");
1324 return NULL;
1325 }
1326
1327 num_ports = 0;
1328 mlx4_foreach_ib_transport_port(i, dev)
1329 num_ports++;
1330
1331 /* No point in registering a device with no ports... */
1332 if (num_ports == 0)
1333 return NULL;
1334
1335 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1336 if (!ibdev) {
1337 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1338 return NULL;
1339 }
1340
1341 iboe = &ibdev->iboe;
1342
1343 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1344 goto err_dealloc;
1345
1346 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1347 goto err_pd;
1348
1349 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1350 PAGE_SIZE);
1351 if (!ibdev->uar_map)
1352 goto err_uar;
1353 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1354
1355 ibdev->dev = dev;
1356
1357 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1358 ibdev->ib_dev.owner = THIS_MODULE;
1359 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
1360 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
1361 ibdev->num_ports = num_ports;
1362 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
1363 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1364 ibdev->ib_dev.dma_device = &dev->pdev->dev;
1365
1366 if (dev->caps.userspace_caps)
1367 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
1368 else
1369 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
1370
1371 ibdev->ib_dev.uverbs_cmd_mask =
1372 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1373 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1374 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1375 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1376 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1377 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1378 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1379 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1380 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1381 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1382 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1383 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1384 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1385 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1386 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1387 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1388 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1389 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1390 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1391 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1392 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
1393 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1394 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1395
1396 ibdev->ib_dev.query_device = mlx4_ib_query_device;
1397 ibdev->ib_dev.query_port = mlx4_ib_query_port;
1398 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
1399 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
1400 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
1401 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
1402 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
1403 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
1404 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
1405 ibdev->ib_dev.mmap = mlx4_ib_mmap;
1406 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
1407 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
1408 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
1409 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
1410 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
1411 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
1412 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
1413 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
1414 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
1415 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
1416 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
1417 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
1418 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
1419 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
1420 ibdev->ib_dev.post_send = mlx4_ib_post_send;
1421 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
1422 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
1423 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
1424 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
1425 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
1426 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
1427 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
1428 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
1429 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
1430 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
1431 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1432 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1433 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
1434 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
1435 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
1436 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
1437
1438 if (!mlx4_is_slave(ibdev->dev)) {
1439 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
1440 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
1441 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
1442 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
1443 }
1444
1445 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
1446 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
1447 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
1448 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
1449 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
1450
1451 ibdev->ib_dev.uverbs_cmd_mask |=
1452 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
1453 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
1454 }
1455
1456 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
1457 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
1458 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
1459 ibdev->ib_dev.uverbs_cmd_mask |=
1460 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1461 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1462 }
1463
1464 mlx4_ib_alloc_eqs(dev, ibdev);
1465
1466 spin_lock_init(&iboe->lock);
1467
1468 if (init_node_data(ibdev))
1469 goto err_map;
1470
1471 for (i = 0; i < ibdev->num_ports; ++i) {
1472 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
1473 IB_LINK_LAYER_ETHERNET) {
1474 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
1475 if (err)
1476 ibdev->counters[i] = -1;
1477 } else
1478 ibdev->counters[i] = -1;
1479 }
1480
1481 spin_lock_init(&ibdev->sm_lock);
1482 mutex_init(&ibdev->cap_mask_mutex);
1483
1484 if (ib_register_device(&ibdev->ib_dev, NULL))
1485 goto err_counter;
1486
1487 if (mlx4_ib_mad_init(ibdev))
1488 goto err_reg;
1489
1490 if (mlx4_ib_init_sriov(ibdev))
1491 goto err_mad;
1492
1493 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1494 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1495 err = register_netdevice_notifier(&iboe->nb);
1496 if (err)
1497 goto err_sriov;
1498 }
1499
1500 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
1501 if (device_create_file(&ibdev->ib_dev.dev,
1502 mlx4_class_attributes[j]))
1503 goto err_notif;
1504 }
1505
1506 ibdev->ib_active = true;
1507
1508 if (mlx4_is_mfunc(ibdev->dev))
1509 init_pkeys(ibdev);
1510
1511 /* create paravirt contexts for any VFs which are active */
1512 if (mlx4_is_master(ibdev->dev)) {
1513 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
1514 if (j == mlx4_master_func_num(ibdev->dev))
1515 continue;
1516 if (mlx4_is_slave_active(ibdev->dev, j))
1517 do_slave_init(ibdev, j, 1);
1518 }
1519 }
1520 return ibdev;
1521
1522 err_notif:
1523 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1524 pr_warn("failure unregistering notifier\n");
1525 flush_workqueue(wq);
1526
1527 err_sriov:
1528 mlx4_ib_close_sriov(ibdev);
1529
1530 err_mad:
1531 mlx4_ib_mad_cleanup(ibdev);
1532
1533 err_reg:
1534 ib_unregister_device(&ibdev->ib_dev);
1535
1536 err_counter:
1537 for (; i; --i)
1538 if (ibdev->counters[i - 1] != -1)
1539 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1540
1541 err_map:
1542 iounmap(ibdev->uar_map);
1543
1544 err_uar:
1545 mlx4_uar_free(dev, &ibdev->priv_uar);
1546
1547 err_pd:
1548 mlx4_pd_free(dev, ibdev->priv_pdn);
1549
1550 err_dealloc:
1551 ib_dealloc_device(&ibdev->ib_dev);
1552
1553 return NULL;
1554 }
1555
1556 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1557 {
1558 struct mlx4_ib_dev *ibdev = ibdev_ptr;
1559 int p;
1560
1561 mlx4_ib_close_sriov(ibdev);
1562 mlx4_ib_mad_cleanup(ibdev);
1563 ib_unregister_device(&ibdev->ib_dev);
1564 if (ibdev->iboe.nb.notifier_call) {
1565 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1566 pr_warn("failure unregistering notifier\n");
1567 ibdev->iboe.nb.notifier_call = NULL;
1568 }
1569 iounmap(ibdev->uar_map);
1570 for (p = 0; p < ibdev->num_ports; ++p)
1571 if (ibdev->counters[p] != -1)
1572 mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
1573 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1574 mlx4_CLOSE_PORT(dev, p);
1575
1576 mlx4_ib_free_eqs(dev, ibdev);
1577
1578 mlx4_uar_free(dev, &ibdev->priv_uar);
1579 mlx4_pd_free(dev, ibdev->priv_pdn);
1580 ib_dealloc_device(&ibdev->ib_dev);
1581 }
1582
1583 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
1584 {
1585 struct mlx4_ib_demux_work **dm = NULL;
1586 struct mlx4_dev *dev = ibdev->dev;
1587 int i;
1588 unsigned long flags;
1589
1590 if (!mlx4_is_master(dev))
1591 return;
1592
1593 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC);
1594 if (!dm) {
1595 pr_err("failed to allocate memory for tunneling qp update\n");
1596 goto out;
1597 }
1598
1599 for (i = 0; i < dev->caps.num_ports; i++) {
1600 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
1601 if (!dm[i]) {
1602 pr_err("failed to allocate memory for tunneling qp update work struct\n");
1603 for (i = 0; i < dev->caps.num_ports; i++) {
1604 if (dm[i])
1605 kfree(dm[i]);
1606 }
1607 goto out;
1608 }
1609 }
1610 /* initialize or tear down tunnel QPs for the slave */
1611 for (i = 0; i < dev->caps.num_ports; i++) {
1612 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
1613 dm[i]->port = i + 1;
1614 dm[i]->slave = slave;
1615 dm[i]->do_init = do_init;
1616 dm[i]->dev = ibdev;
1617 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
1618 if (!ibdev->sriov.is_going_down)
1619 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
1620 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
1621 }
1622 out:
1623 kfree(dm);
1624 return;
1625 }
1626
1627 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1628 enum mlx4_dev_event event, unsigned long param)
1629 {
1630 struct ib_event ibev;
1631 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1632 struct mlx4_eqe *eqe = NULL;
1633 struct ib_event_work *ew;
1634 int p = 0;
1635
1636 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
1637 eqe = (struct mlx4_eqe *)param;
1638 else
1639 p = (int) param;
1640
1641 switch (event) {
1642 case MLX4_DEV_EVENT_PORT_UP:
1643 if (p > ibdev->num_ports)
1644 return;
1645 if (mlx4_is_master(dev) &&
1646 rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
1647 IB_LINK_LAYER_INFINIBAND) {
1648 mlx4_ib_invalidate_all_guid_record(ibdev, p);
1649 }
1650 ibev.event = IB_EVENT_PORT_ACTIVE;
1651 break;
1652
1653 case MLX4_DEV_EVENT_PORT_DOWN:
1654 if (p > ibdev->num_ports)
1655 return;
1656 ibev.event = IB_EVENT_PORT_ERR;
1657 break;
1658
1659 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1660 ibdev->ib_active = false;
1661 ibev.event = IB_EVENT_DEVICE_FATAL;
1662 break;
1663
1664 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
1665 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
1666 if (!ew) {
1667 pr_err("failed to allocate memory for events work\n");
1668 break;
1669 }
1670
1671 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
1672 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
1673 ew->ib_dev = ibdev;
1674 /* need to queue only for port owner, which uses GEN_EQE */
1675 if (mlx4_is_master(dev))
1676 queue_work(wq, &ew->work);
1677 else
1678 handle_port_mgmt_change_event(&ew->work);
1679 return;
1680
1681 case MLX4_DEV_EVENT_SLAVE_INIT:
1682 /* here, p is the slave id */
1683 do_slave_init(ibdev, p, 1);
1684 return;
1685
1686 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
1687 /* here, p is the slave id */
1688 do_slave_init(ibdev, p, 0);
1689 return;
1690
1691 default:
1692 return;
1693 }
1694
1695 ibev.device = ibdev_ptr;
1696 ibev.element.port_num = (u8) p;
1697
1698 ib_dispatch_event(&ibev);
1699 }
1700
1701 static struct mlx4_interface mlx4_ib_interface = {
1702 .add = mlx4_ib_add,
1703 .remove = mlx4_ib_remove,
1704 .event = mlx4_ib_event,
1705 .protocol = MLX4_PROT_IB_IPV6
1706 };
1707
1708 static int __init mlx4_ib_init(void)
1709 {
1710 int err;
1711
1712 wq = create_singlethread_workqueue("mlx4_ib");
1713 if (!wq)
1714 return -ENOMEM;
1715
1716 err = mlx4_ib_mcg_init();
1717 if (err)
1718 goto clean_wq;
1719
1720 err = mlx4_register_interface(&mlx4_ib_interface);
1721 if (err)
1722 goto clean_mcg;
1723
1724 return 0;
1725
1726 clean_mcg:
1727 mlx4_ib_mcg_destroy();
1728
1729 clean_wq:
1730 destroy_workqueue(wq);
1731 return err;
1732 }
1733
1734 static void __exit mlx4_ib_cleanup(void)
1735 {
1736 mlx4_unregister_interface(&mlx4_ib_interface);
1737 mlx4_ib_mcg_destroy();
1738 destroy_workqueue(wq);
1739 }
1740
1741 module_init(mlx4_ib_init);
1742 module_exit(mlx4_ib_cleanup);
CRIS linux kernel tree