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Merge tag 'regulator-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
[deliverable/linux.git] / drivers / infiniband / hw / mlx4 / main.c
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 #define MLX4_IB_FLOW_MAX_PRIO 0xFFF
58
59 MODULE_AUTHOR("Roland Dreier");
60 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
61 MODULE_LICENSE("Dual BSD/GPL");
62 MODULE_VERSION(DRV_VERSION);
63
64 int mlx4_ib_sm_guid_assign = 1;
65 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444);
66 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)");
67
68 static const char mlx4_ib_version[] =
69 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
70 DRV_VERSION " (" DRV_RELDATE ")\n";
71
72 struct update_gid_work {
73 struct work_struct work;
74 union ib_gid gids[128];
75 struct mlx4_ib_dev *dev;
76 int port;
77 };
78
79 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init);
80
81 static struct workqueue_struct *wq;
82
83 static void init_query_mad(struct ib_smp *mad)
84 {
85 mad->base_version = 1;
86 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
87 mad->class_version = 1;
88 mad->method = IB_MGMT_METHOD_GET;
89 }
90
91 static union ib_gid zgid;
92
93 static int check_flow_steering_support(struct mlx4_dev *dev)
94 {
95 int ib_num_ports = 0;
96 int i;
97
98 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
99 ib_num_ports++;
100
101 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
102 if (ib_num_ports || mlx4_is_mfunc(dev)) {
103 pr_warn("Device managed flow steering is unavailable "
104 "for IB ports or in multifunction env.\n");
105 return 0;
106 }
107 return 1;
108 }
109 return 0;
110 }
111
112 static int mlx4_ib_query_device(struct ib_device *ibdev,
113 struct ib_device_attr *props)
114 {
115 struct mlx4_ib_dev *dev = to_mdev(ibdev);
116 struct ib_smp *in_mad = NULL;
117 struct ib_smp *out_mad = NULL;
118 int err = -ENOMEM;
119
120 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
121 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
122 if (!in_mad || !out_mad)
123 goto out;
124
125 init_query_mad(in_mad);
126 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
127
128 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS,
129 1, NULL, NULL, in_mad, out_mad);
130 if (err)
131 goto out;
132
133 memset(props, 0, sizeof *props);
134
135 props->fw_ver = dev->dev->caps.fw_ver;
136 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
137 IB_DEVICE_PORT_ACTIVE_EVENT |
138 IB_DEVICE_SYS_IMAGE_GUID |
139 IB_DEVICE_RC_RNR_NAK_GEN |
140 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
141 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
142 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
143 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
144 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
145 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
146 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
147 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
148 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
149 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
150 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
151 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
152 props->device_cap_flags |= IB_DEVICE_UD_TSO;
153 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
154 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
155 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
156 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
157 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
158 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
159 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
160 props->device_cap_flags |= IB_DEVICE_XRC;
161 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)
162 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW;
163 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
164 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_WIN_TYPE_2B)
165 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2B;
166 else
167 props->device_cap_flags |= IB_DEVICE_MEM_WINDOW_TYPE_2A;
168 if (check_flow_steering_support(dev->dev))
169 props->device_cap_flags |= IB_DEVICE_MANAGED_FLOW_STEERING;
170 }
171
172 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
173 0xffffff;
174 props->vendor_part_id = dev->dev->pdev->device;
175 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
176 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
177
178 props->max_mr_size = ~0ull;
179 props->page_size_cap = dev->dev->caps.page_size_cap;
180 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
181 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
182 props->max_sge = min(dev->dev->caps.max_sq_sg,
183 dev->dev->caps.max_rq_sg);
184 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
185 props->max_cqe = dev->dev->caps.max_cqes;
186 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
187 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
188 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
189 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
190 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
191 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
192 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
193 props->max_srq_sge = dev->dev->caps.max_srq_sge;
194 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
195 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
196 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
197 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
198 props->masked_atomic_cap = props->atomic_cap;
199 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
200 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
201 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
202 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
203 props->max_mcast_grp;
204 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
205
206 out:
207 kfree(in_mad);
208 kfree(out_mad);
209
210 return err;
211 }
212
213 static enum rdma_link_layer
214 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
215 {
216 struct mlx4_dev *dev = to_mdev(device)->dev;
217
218 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
219 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
220 }
221
222 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
223 struct ib_port_attr *props, int netw_view)
224 {
225 struct ib_smp *in_mad = NULL;
226 struct ib_smp *out_mad = NULL;
227 int ext_active_speed;
228 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
229 int err = -ENOMEM;
230
231 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
232 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
233 if (!in_mad || !out_mad)
234 goto out;
235
236 init_query_mad(in_mad);
237 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
238 in_mad->attr_mod = cpu_to_be32(port);
239
240 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
241 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
242
243 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
244 in_mad, out_mad);
245 if (err)
246 goto out;
247
248
249 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
250 props->lmc = out_mad->data[34] & 0x7;
251 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
252 props->sm_sl = out_mad->data[36] & 0xf;
253 props->state = out_mad->data[32] & 0xf;
254 props->phys_state = out_mad->data[33] >> 4;
255 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
256 if (netw_view)
257 props->gid_tbl_len = out_mad->data[50];
258 else
259 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
260 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
261 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
262 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
263 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
264 props->active_width = out_mad->data[31] & 0xf;
265 props->active_speed = out_mad->data[35] >> 4;
266 props->max_mtu = out_mad->data[41] & 0xf;
267 props->active_mtu = out_mad->data[36] >> 4;
268 props->subnet_timeout = out_mad->data[51] & 0x1f;
269 props->max_vl_num = out_mad->data[37] >> 4;
270 props->init_type_reply = out_mad->data[41] >> 4;
271
272 /* Check if extended speeds (EDR/FDR/...) are supported */
273 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
274 ext_active_speed = out_mad->data[62] >> 4;
275
276 switch (ext_active_speed) {
277 case 1:
278 props->active_speed = IB_SPEED_FDR;
279 break;
280 case 2:
281 props->active_speed = IB_SPEED_EDR;
282 break;
283 }
284 }
285
286 /* If reported active speed is QDR, check if is FDR-10 */
287 if (props->active_speed == IB_SPEED_QDR) {
288 init_query_mad(in_mad);
289 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
290 in_mad->attr_mod = cpu_to_be32(port);
291
292 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port,
293 NULL, NULL, in_mad, out_mad);
294 if (err)
295 goto out;
296
297 /* Checking LinkSpeedActive for FDR-10 */
298 if (out_mad->data[15] & 0x1)
299 props->active_speed = IB_SPEED_FDR10;
300 }
301
302 /* Avoid wrong speed value returned by FW if the IB link is down. */
303 if (props->state == IB_PORT_DOWN)
304 props->active_speed = IB_SPEED_SDR;
305
306 out:
307 kfree(in_mad);
308 kfree(out_mad);
309 return err;
310 }
311
312 static u8 state_to_phys_state(enum ib_port_state state)
313 {
314 return state == IB_PORT_ACTIVE ? 5 : 3;
315 }
316
317 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
318 struct ib_port_attr *props, int netw_view)
319 {
320
321 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
322 struct mlx4_ib_iboe *iboe = &mdev->iboe;
323 struct net_device *ndev;
324 enum ib_mtu tmp;
325 struct mlx4_cmd_mailbox *mailbox;
326 int err = 0;
327
328 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
329 if (IS_ERR(mailbox))
330 return PTR_ERR(mailbox);
331
332 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
333 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
334 MLX4_CMD_WRAPPED);
335 if (err)
336 goto out;
337
338 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ?
339 IB_WIDTH_4X : IB_WIDTH_1X;
340 props->active_speed = IB_SPEED_QDR;
341 props->port_cap_flags = IB_PORT_CM_SUP;
342 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
343 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
344 props->pkey_tbl_len = 1;
345 props->max_mtu = IB_MTU_4096;
346 props->max_vl_num = 2;
347 props->state = IB_PORT_DOWN;
348 props->phys_state = state_to_phys_state(props->state);
349 props->active_mtu = IB_MTU_256;
350 spin_lock(&iboe->lock);
351 ndev = iboe->netdevs[port - 1];
352 if (!ndev)
353 goto out_unlock;
354
355 tmp = iboe_get_mtu(ndev->mtu);
356 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
357
358 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
359 IB_PORT_ACTIVE : IB_PORT_DOWN;
360 props->phys_state = state_to_phys_state(props->state);
361 out_unlock:
362 spin_unlock(&iboe->lock);
363 out:
364 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
365 return err;
366 }
367
368 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
369 struct ib_port_attr *props, int netw_view)
370 {
371 int err;
372
373 memset(props, 0, sizeof *props);
374
375 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
376 ib_link_query_port(ibdev, port, props, netw_view) :
377 eth_link_query_port(ibdev, port, props, netw_view);
378
379 return err;
380 }
381
382 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
383 struct ib_port_attr *props)
384 {
385 /* returns host view */
386 return __mlx4_ib_query_port(ibdev, port, props, 0);
387 }
388
389 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
390 union ib_gid *gid, int netw_view)
391 {
392 struct ib_smp *in_mad = NULL;
393 struct ib_smp *out_mad = NULL;
394 int err = -ENOMEM;
395 struct mlx4_ib_dev *dev = to_mdev(ibdev);
396 int clear = 0;
397 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
398
399 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
400 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
401 if (!in_mad || !out_mad)
402 goto out;
403
404 init_query_mad(in_mad);
405 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
406 in_mad->attr_mod = cpu_to_be32(port);
407
408 if (mlx4_is_mfunc(dev->dev) && netw_view)
409 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
410
411 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad);
412 if (err)
413 goto out;
414
415 memcpy(gid->raw, out_mad->data + 8, 8);
416
417 if (mlx4_is_mfunc(dev->dev) && !netw_view) {
418 if (index) {
419 /* For any index > 0, return the null guid */
420 err = 0;
421 clear = 1;
422 goto out;
423 }
424 }
425
426 init_query_mad(in_mad);
427 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
428 in_mad->attr_mod = cpu_to_be32(index / 8);
429
430 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port,
431 NULL, NULL, in_mad, out_mad);
432 if (err)
433 goto out;
434
435 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
436
437 out:
438 if (clear)
439 memset(gid->raw + 8, 0, 8);
440 kfree(in_mad);
441 kfree(out_mad);
442 return err;
443 }
444
445 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
446 union ib_gid *gid)
447 {
448 struct mlx4_ib_dev *dev = to_mdev(ibdev);
449
450 *gid = dev->iboe.gid_table[port - 1][index];
451
452 return 0;
453 }
454
455 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
456 union ib_gid *gid)
457 {
458 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
459 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0);
460 else
461 return iboe_query_gid(ibdev, port, index, gid);
462 }
463
464 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
465 u16 *pkey, int netw_view)
466 {
467 struct ib_smp *in_mad = NULL;
468 struct ib_smp *out_mad = NULL;
469 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
470 int err = -ENOMEM;
471
472 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
473 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
474 if (!in_mad || !out_mad)
475 goto out;
476
477 init_query_mad(in_mad);
478 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
479 in_mad->attr_mod = cpu_to_be32(index / 32);
480
481 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view)
482 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
483
484 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL,
485 in_mad, out_mad);
486 if (err)
487 goto out;
488
489 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
490
491 out:
492 kfree(in_mad);
493 kfree(out_mad);
494 return err;
495 }
496
497 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
498 {
499 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0);
500 }
501
502 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
503 struct ib_device_modify *props)
504 {
505 struct mlx4_cmd_mailbox *mailbox;
506 unsigned long flags;
507
508 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
509 return -EOPNOTSUPP;
510
511 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
512 return 0;
513
514 if (mlx4_is_slave(to_mdev(ibdev)->dev))
515 return -EOPNOTSUPP;
516
517 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
518 memcpy(ibdev->node_desc, props->node_desc, 64);
519 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
520
521 /*
522 * If possible, pass node desc to FW, so it can generate
523 * a 144 trap. If cmd fails, just ignore.
524 */
525 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
526 if (IS_ERR(mailbox))
527 return 0;
528
529 memset(mailbox->buf, 0, 256);
530 memcpy(mailbox->buf, props->node_desc, 64);
531 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
532 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
533
534 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
535
536 return 0;
537 }
538
539 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
540 u32 cap_mask)
541 {
542 struct mlx4_cmd_mailbox *mailbox;
543 int err;
544 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
545
546 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
547 if (IS_ERR(mailbox))
548 return PTR_ERR(mailbox);
549
550 memset(mailbox->buf, 0, 256);
551
552 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
553 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
554 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
555 } else {
556 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
557 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
558 }
559
560 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
561 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
562
563 mlx4_free_cmd_mailbox(dev->dev, mailbox);
564 return err;
565 }
566
567 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
568 struct ib_port_modify *props)
569 {
570 struct ib_port_attr attr;
571 u32 cap_mask;
572 int err;
573
574 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
575
576 err = mlx4_ib_query_port(ibdev, port, &attr);
577 if (err)
578 goto out;
579
580 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
581 ~props->clr_port_cap_mask;
582
583 err = mlx4_SET_PORT(to_mdev(ibdev), port,
584 !!(mask & IB_PORT_RESET_QKEY_CNTR),
585 cap_mask);
586
587 out:
588 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
589 return err;
590 }
591
592 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
593 struct ib_udata *udata)
594 {
595 struct mlx4_ib_dev *dev = to_mdev(ibdev);
596 struct mlx4_ib_ucontext *context;
597 struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
598 struct mlx4_ib_alloc_ucontext_resp resp;
599 int err;
600
601 if (!dev->ib_active)
602 return ERR_PTR(-EAGAIN);
603
604 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
605 resp_v3.qp_tab_size = dev->dev->caps.num_qps;
606 resp_v3.bf_reg_size = dev->dev->caps.bf_reg_size;
607 resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
608 } else {
609 resp.dev_caps = dev->dev->caps.userspace_caps;
610 resp.qp_tab_size = dev->dev->caps.num_qps;
611 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
612 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
613 resp.cqe_size = dev->dev->caps.cqe_size;
614 }
615
616 context = kmalloc(sizeof *context, GFP_KERNEL);
617 if (!context)
618 return ERR_PTR(-ENOMEM);
619
620 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
621 if (err) {
622 kfree(context);
623 return ERR_PTR(err);
624 }
625
626 INIT_LIST_HEAD(&context->db_page_list);
627 mutex_init(&context->db_page_mutex);
628
629 if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
630 err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
631 else
632 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
633
634 if (err) {
635 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
636 kfree(context);
637 return ERR_PTR(-EFAULT);
638 }
639
640 return &context->ibucontext;
641 }
642
643 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
644 {
645 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
646
647 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
648 kfree(context);
649
650 return 0;
651 }
652
653 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
654 {
655 struct mlx4_ib_dev *dev = to_mdev(context->device);
656
657 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
658 return -EINVAL;
659
660 if (vma->vm_pgoff == 0) {
661 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
662
663 if (io_remap_pfn_range(vma, vma->vm_start,
664 to_mucontext(context)->uar.pfn,
665 PAGE_SIZE, vma->vm_page_prot))
666 return -EAGAIN;
667 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
668 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
669
670 if (io_remap_pfn_range(vma, vma->vm_start,
671 to_mucontext(context)->uar.pfn +
672 dev->dev->caps.num_uars,
673 PAGE_SIZE, vma->vm_page_prot))
674 return -EAGAIN;
675 } else
676 return -EINVAL;
677
678 return 0;
679 }
680
681 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
682 struct ib_ucontext *context,
683 struct ib_udata *udata)
684 {
685 struct mlx4_ib_pd *pd;
686 int err;
687
688 pd = kmalloc(sizeof *pd, GFP_KERNEL);
689 if (!pd)
690 return ERR_PTR(-ENOMEM);
691
692 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
693 if (err) {
694 kfree(pd);
695 return ERR_PTR(err);
696 }
697
698 if (context)
699 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
700 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
701 kfree(pd);
702 return ERR_PTR(-EFAULT);
703 }
704
705 return &pd->ibpd;
706 }
707
708 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
709 {
710 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
711 kfree(pd);
712
713 return 0;
714 }
715
716 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
717 struct ib_ucontext *context,
718 struct ib_udata *udata)
719 {
720 struct mlx4_ib_xrcd *xrcd;
721 int err;
722
723 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
724 return ERR_PTR(-ENOSYS);
725
726 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
727 if (!xrcd)
728 return ERR_PTR(-ENOMEM);
729
730 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
731 if (err)
732 goto err1;
733
734 xrcd->pd = ib_alloc_pd(ibdev);
735 if (IS_ERR(xrcd->pd)) {
736 err = PTR_ERR(xrcd->pd);
737 goto err2;
738 }
739
740 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
741 if (IS_ERR(xrcd->cq)) {
742 err = PTR_ERR(xrcd->cq);
743 goto err3;
744 }
745
746 return &xrcd->ibxrcd;
747
748 err3:
749 ib_dealloc_pd(xrcd->pd);
750 err2:
751 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
752 err1:
753 kfree(xrcd);
754 return ERR_PTR(err);
755 }
756
757 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
758 {
759 ib_destroy_cq(to_mxrcd(xrcd)->cq);
760 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
761 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
762 kfree(xrcd);
763
764 return 0;
765 }
766
767 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
768 {
769 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
770 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
771 struct mlx4_ib_gid_entry *ge;
772
773 ge = kzalloc(sizeof *ge, GFP_KERNEL);
774 if (!ge)
775 return -ENOMEM;
776
777 ge->gid = *gid;
778 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
779 ge->port = mqp->port;
780 ge->added = 1;
781 }
782
783 mutex_lock(&mqp->mutex);
784 list_add_tail(&ge->list, &mqp->gid_list);
785 mutex_unlock(&mqp->mutex);
786
787 return 0;
788 }
789
790 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
791 union ib_gid *gid)
792 {
793 u8 mac[6];
794 struct net_device *ndev;
795 int ret = 0;
796
797 if (!mqp->port)
798 return 0;
799
800 spin_lock(&mdev->iboe.lock);
801 ndev = mdev->iboe.netdevs[mqp->port - 1];
802 if (ndev)
803 dev_hold(ndev);
804 spin_unlock(&mdev->iboe.lock);
805
806 if (ndev) {
807 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
808 rtnl_lock();
809 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
810 ret = 1;
811 rtnl_unlock();
812 dev_put(ndev);
813 }
814
815 return ret;
816 }
817
818 struct mlx4_ib_steering {
819 struct list_head list;
820 u64 reg_id;
821 union ib_gid gid;
822 };
823
824 static int parse_flow_attr(struct mlx4_dev *dev,
825 union ib_flow_spec *ib_spec,
826 struct _rule_hw *mlx4_spec)
827 {
828 enum mlx4_net_trans_rule_id type;
829
830 switch (ib_spec->type) {
831 case IB_FLOW_SPEC_ETH:
832 type = MLX4_NET_TRANS_RULE_ID_ETH;
833 memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac,
834 ETH_ALEN);
835 memcpy(mlx4_spec->eth.dst_mac_msk, ib_spec->eth.mask.dst_mac,
836 ETH_ALEN);
837 mlx4_spec->eth.vlan_tag = ib_spec->eth.val.vlan_tag;
838 mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag;
839 break;
840
841 case IB_FLOW_SPEC_IPV4:
842 type = MLX4_NET_TRANS_RULE_ID_IPV4;
843 mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip;
844 mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip;
845 mlx4_spec->ipv4.dst_ip = ib_spec->ipv4.val.dst_ip;
846 mlx4_spec->ipv4.dst_ip_msk = ib_spec->ipv4.mask.dst_ip;
847 break;
848
849 case IB_FLOW_SPEC_TCP:
850 case IB_FLOW_SPEC_UDP:
851 type = ib_spec->type == IB_FLOW_SPEC_TCP ?
852 MLX4_NET_TRANS_RULE_ID_TCP :
853 MLX4_NET_TRANS_RULE_ID_UDP;
854 mlx4_spec->tcp_udp.dst_port = ib_spec->tcp_udp.val.dst_port;
855 mlx4_spec->tcp_udp.dst_port_msk = ib_spec->tcp_udp.mask.dst_port;
856 mlx4_spec->tcp_udp.src_port = ib_spec->tcp_udp.val.src_port;
857 mlx4_spec->tcp_udp.src_port_msk = ib_spec->tcp_udp.mask.src_port;
858 break;
859
860 default:
861 return -EINVAL;
862 }
863 if (mlx4_map_sw_to_hw_steering_id(dev, type) < 0 ||
864 mlx4_hw_rule_sz(dev, type) < 0)
865 return -EINVAL;
866 mlx4_spec->id = cpu_to_be16(mlx4_map_sw_to_hw_steering_id(dev, type));
867 mlx4_spec->size = mlx4_hw_rule_sz(dev, type) >> 2;
868 return mlx4_hw_rule_sz(dev, type);
869 }
870
871 static int __mlx4_ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr,
872 int domain,
873 enum mlx4_net_trans_promisc_mode flow_type,
874 u64 *reg_id)
875 {
876 int ret, i;
877 int size = 0;
878 void *ib_flow;
879 struct mlx4_ib_dev *mdev = to_mdev(qp->device);
880 struct mlx4_cmd_mailbox *mailbox;
881 struct mlx4_net_trans_rule_hw_ctrl *ctrl;
882 size_t rule_size = sizeof(struct mlx4_net_trans_rule_hw_ctrl) +
883 (sizeof(struct _rule_hw) * flow_attr->num_of_specs);
884
885 static const u16 __mlx4_domain[] = {
886 [IB_FLOW_DOMAIN_USER] = MLX4_DOMAIN_UVERBS,
887 [IB_FLOW_DOMAIN_ETHTOOL] = MLX4_DOMAIN_ETHTOOL,
888 [IB_FLOW_DOMAIN_RFS] = MLX4_DOMAIN_RFS,
889 [IB_FLOW_DOMAIN_NIC] = MLX4_DOMAIN_NIC,
890 };
891
892 if (flow_attr->priority > MLX4_IB_FLOW_MAX_PRIO) {
893 pr_err("Invalid priority value %d\n", flow_attr->priority);
894 return -EINVAL;
895 }
896
897 if (domain >= IB_FLOW_DOMAIN_NUM) {
898 pr_err("Invalid domain value %d\n", domain);
899 return -EINVAL;
900 }
901
902 if (mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type) < 0)
903 return -EINVAL;
904
905 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
906 if (IS_ERR(mailbox))
907 return PTR_ERR(mailbox);
908 memset(mailbox->buf, 0, rule_size);
909 ctrl = mailbox->buf;
910
911 ctrl->prio = cpu_to_be16(__mlx4_domain[domain] |
912 flow_attr->priority);
913 ctrl->type = mlx4_map_sw_to_hw_steering_mode(mdev->dev, flow_type);
914 ctrl->port = flow_attr->port;
915 ctrl->qpn = cpu_to_be32(qp->qp_num);
916
917 ib_flow = flow_attr + 1;
918 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
919 for (i = 0; i < flow_attr->num_of_specs; i++) {
920 ret = parse_flow_attr(mdev->dev, ib_flow, mailbox->buf + size);
921 if (ret < 0) {
922 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
923 return -EINVAL;
924 }
925 ib_flow += ((union ib_flow_spec *) ib_flow)->size;
926 size += ret;
927 }
928
929 ret = mlx4_cmd_imm(mdev->dev, mailbox->dma, reg_id, size >> 2, 0,
930 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
931 MLX4_CMD_NATIVE);
932 if (ret == -ENOMEM)
933 pr_err("mcg table is full. Fail to register network rule.\n");
934 else if (ret == -ENXIO)
935 pr_err("Device managed flow steering is disabled. Fail to register network rule.\n");
936 else if (ret)
937 pr_err("Invalid argumant. Fail to register network rule.\n");
938
939 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
940 return ret;
941 }
942
943 static int __mlx4_ib_destroy_flow(struct mlx4_dev *dev, u64 reg_id)
944 {
945 int err;
946 err = mlx4_cmd(dev, reg_id, 0, 0,
947 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
948 MLX4_CMD_NATIVE);
949 if (err)
950 pr_err("Fail to detach network rule. registration id = 0x%llx\n",
951 reg_id);
952 return err;
953 }
954
955 static struct ib_flow *mlx4_ib_create_flow(struct ib_qp *qp,
956 struct ib_flow_attr *flow_attr,
957 int domain)
958 {
959 int err = 0, i = 0;
960 struct mlx4_ib_flow *mflow;
961 enum mlx4_net_trans_promisc_mode type[2];
962
963 memset(type, 0, sizeof(type));
964
965 mflow = kzalloc(sizeof(*mflow), GFP_KERNEL);
966 if (!mflow) {
967 err = -ENOMEM;
968 goto err_free;
969 }
970
971 switch (flow_attr->type) {
972 case IB_FLOW_ATTR_NORMAL:
973 type[0] = MLX4_FS_REGULAR;
974 break;
975
976 case IB_FLOW_ATTR_ALL_DEFAULT:
977 type[0] = MLX4_FS_ALL_DEFAULT;
978 break;
979
980 case IB_FLOW_ATTR_MC_DEFAULT:
981 type[0] = MLX4_FS_MC_DEFAULT;
982 break;
983
984 case IB_FLOW_ATTR_SNIFFER:
985 type[0] = MLX4_FS_UC_SNIFFER;
986 type[1] = MLX4_FS_MC_SNIFFER;
987 break;
988
989 default:
990 err = -EINVAL;
991 goto err_free;
992 }
993
994 while (i < ARRAY_SIZE(type) && type[i]) {
995 err = __mlx4_ib_create_flow(qp, flow_attr, domain, type[i],
996 &mflow->reg_id[i]);
997 if (err)
998 goto err_free;
999 i++;
1000 }
1001
1002 return &mflow->ibflow;
1003
1004 err_free:
1005 kfree(mflow);
1006 return ERR_PTR(err);
1007 }
1008
1009 static int mlx4_ib_destroy_flow(struct ib_flow *flow_id)
1010 {
1011 int err, ret = 0;
1012 int i = 0;
1013 struct mlx4_ib_dev *mdev = to_mdev(flow_id->qp->device);
1014 struct mlx4_ib_flow *mflow = to_mflow(flow_id);
1015
1016 while (i < ARRAY_SIZE(mflow->reg_id) && mflow->reg_id[i]) {
1017 err = __mlx4_ib_destroy_flow(mdev->dev, mflow->reg_id[i]);
1018 if (err)
1019 ret = err;
1020 i++;
1021 }
1022
1023 kfree(mflow);
1024 return ret;
1025 }
1026
1027 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1028 {
1029 int err;
1030 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1031 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1032 u64 reg_id;
1033 struct mlx4_ib_steering *ib_steering = NULL;
1034
1035 if (mdev->dev->caps.steering_mode ==
1036 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1037 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
1038 if (!ib_steering)
1039 return -ENOMEM;
1040 }
1041
1042 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
1043 !!(mqp->flags &
1044 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
1045 MLX4_PROT_IB_IPV6, &reg_id);
1046 if (err)
1047 goto err_malloc;
1048
1049 err = add_gid_entry(ibqp, gid);
1050 if (err)
1051 goto err_add;
1052
1053 if (ib_steering) {
1054 memcpy(ib_steering->gid.raw, gid->raw, 16);
1055 ib_steering->reg_id = reg_id;
1056 mutex_lock(&mqp->mutex);
1057 list_add(&ib_steering->list, &mqp->steering_rules);
1058 mutex_unlock(&mqp->mutex);
1059 }
1060 return 0;
1061
1062 err_add:
1063 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1064 MLX4_PROT_IB_IPV6, reg_id);
1065 err_malloc:
1066 kfree(ib_steering);
1067
1068 return err;
1069 }
1070
1071 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
1072 {
1073 struct mlx4_ib_gid_entry *ge;
1074 struct mlx4_ib_gid_entry *tmp;
1075 struct mlx4_ib_gid_entry *ret = NULL;
1076
1077 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
1078 if (!memcmp(raw, ge->gid.raw, 16)) {
1079 ret = ge;
1080 break;
1081 }
1082 }
1083
1084 return ret;
1085 }
1086
1087 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
1088 {
1089 int err;
1090 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
1091 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
1092 u8 mac[6];
1093 struct net_device *ndev;
1094 struct mlx4_ib_gid_entry *ge;
1095 u64 reg_id = 0;
1096
1097 if (mdev->dev->caps.steering_mode ==
1098 MLX4_STEERING_MODE_DEVICE_MANAGED) {
1099 struct mlx4_ib_steering *ib_steering;
1100
1101 mutex_lock(&mqp->mutex);
1102 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
1103 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
1104 list_del(&ib_steering->list);
1105 break;
1106 }
1107 }
1108 mutex_unlock(&mqp->mutex);
1109 if (&ib_steering->list == &mqp->steering_rules) {
1110 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
1111 return -EINVAL;
1112 }
1113 reg_id = ib_steering->reg_id;
1114 kfree(ib_steering);
1115 }
1116
1117 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
1118 MLX4_PROT_IB_IPV6, reg_id);
1119 if (err)
1120 return err;
1121
1122 mutex_lock(&mqp->mutex);
1123 ge = find_gid_entry(mqp, gid->raw);
1124 if (ge) {
1125 spin_lock(&mdev->iboe.lock);
1126 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
1127 if (ndev)
1128 dev_hold(ndev);
1129 spin_unlock(&mdev->iboe.lock);
1130 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
1131 if (ndev) {
1132 rtnl_lock();
1133 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
1134 rtnl_unlock();
1135 dev_put(ndev);
1136 }
1137 list_del(&ge->list);
1138 kfree(ge);
1139 } else
1140 pr_warn("could not find mgid entry\n");
1141
1142 mutex_unlock(&mqp->mutex);
1143
1144 return 0;
1145 }
1146
1147 static int init_node_data(struct mlx4_ib_dev *dev)
1148 {
1149 struct ib_smp *in_mad = NULL;
1150 struct ib_smp *out_mad = NULL;
1151 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS;
1152 int err = -ENOMEM;
1153
1154 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1155 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
1156 if (!in_mad || !out_mad)
1157 goto out;
1158
1159 init_query_mad(in_mad);
1160 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
1161 if (mlx4_is_master(dev->dev))
1162 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW;
1163
1164 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1165 if (err)
1166 goto out;
1167
1168 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
1169
1170 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
1171
1172 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad);
1173 if (err)
1174 goto out;
1175
1176 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
1177 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
1178
1179 out:
1180 kfree(in_mad);
1181 kfree(out_mad);
1182 return err;
1183 }
1184
1185 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
1186 char *buf)
1187 {
1188 struct mlx4_ib_dev *dev =
1189 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1190 return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
1191 }
1192
1193 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
1194 char *buf)
1195 {
1196 struct mlx4_ib_dev *dev =
1197 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1198 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
1199 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
1200 (int) dev->dev->caps.fw_ver & 0xffff);
1201 }
1202
1203 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
1204 char *buf)
1205 {
1206 struct mlx4_ib_dev *dev =
1207 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1208 return sprintf(buf, "%x\n", dev->dev->rev_id);
1209 }
1210
1211 static ssize_t show_board(struct device *device, struct device_attribute *attr,
1212 char *buf)
1213 {
1214 struct mlx4_ib_dev *dev =
1215 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
1216 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
1217 dev->dev->board_id);
1218 }
1219
1220 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1221 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
1222 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1223 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1224
1225 static struct device_attribute *mlx4_class_attributes[] = {
1226 &dev_attr_hw_rev,
1227 &dev_attr_fw_ver,
1228 &dev_attr_hca_type,
1229 &dev_attr_board_id
1230 };
1231
1232 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
1233 {
1234 memcpy(eui, dev->dev_addr, 3);
1235 memcpy(eui + 5, dev->dev_addr + 3, 3);
1236 if (vlan_id < 0x1000) {
1237 eui[3] = vlan_id >> 8;
1238 eui[4] = vlan_id & 0xff;
1239 } else {
1240 eui[3] = 0xff;
1241 eui[4] = 0xfe;
1242 }
1243 eui[0] ^= 2;
1244 }
1245
1246 static void update_gids_task(struct work_struct *work)
1247 {
1248 struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
1249 struct mlx4_cmd_mailbox *mailbox;
1250 union ib_gid *gids;
1251 int err;
1252 struct mlx4_dev *dev = gw->dev->dev;
1253
1254 mailbox = mlx4_alloc_cmd_mailbox(dev);
1255 if (IS_ERR(mailbox)) {
1256 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
1257 return;
1258 }
1259
1260 gids = mailbox->buf;
1261 memcpy(gids, gw->gids, sizeof gw->gids);
1262
1263 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
1264 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1265 MLX4_CMD_WRAPPED);
1266 if (err)
1267 pr_warn("set port command failed\n");
1268 else {
1269 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
1270 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
1271 }
1272
1273 mlx4_free_cmd_mailbox(dev, mailbox);
1274 kfree(gw);
1275 }
1276
1277 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
1278 {
1279 struct net_device *ndev = dev->iboe.netdevs[port - 1];
1280 struct update_gid_work *work;
1281 struct net_device *tmp;
1282 int i;
1283 u8 *hits;
1284 int ret;
1285 union ib_gid gid;
1286 int free;
1287 int found;
1288 int need_update = 0;
1289 u16 vid;
1290
1291 work = kzalloc(sizeof *work, GFP_ATOMIC);
1292 if (!work)
1293 return -ENOMEM;
1294
1295 hits = kzalloc(128, GFP_ATOMIC);
1296 if (!hits) {
1297 ret = -ENOMEM;
1298 goto out;
1299 }
1300
1301 rcu_read_lock();
1302 for_each_netdev_rcu(&init_net, tmp) {
1303 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
1304 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1305 vid = rdma_vlan_dev_vlan_id(tmp);
1306 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
1307 found = 0;
1308 free = -1;
1309 for (i = 0; i < 128; ++i) {
1310 if (free < 0 &&
1311 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1312 free = i;
1313 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
1314 hits[i] = 1;
1315 found = 1;
1316 break;
1317 }
1318 }
1319
1320 if (!found) {
1321 if (tmp == ndev &&
1322 (memcmp(&dev->iboe.gid_table[port - 1][0],
1323 &gid, sizeof gid) ||
1324 !memcmp(&dev->iboe.gid_table[port - 1][0],
1325 &zgid, sizeof gid))) {
1326 dev->iboe.gid_table[port - 1][0] = gid;
1327 ++need_update;
1328 hits[0] = 1;
1329 } else if (free >= 0) {
1330 dev->iboe.gid_table[port - 1][free] = gid;
1331 hits[free] = 1;
1332 ++need_update;
1333 }
1334 }
1335 }
1336 }
1337 rcu_read_unlock();
1338
1339 for (i = 0; i < 128; ++i)
1340 if (!hits[i]) {
1341 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1342 ++need_update;
1343 dev->iboe.gid_table[port - 1][i] = zgid;
1344 }
1345
1346 if (need_update) {
1347 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
1348 INIT_WORK(&work->work, update_gids_task);
1349 work->port = port;
1350 work->dev = dev;
1351 queue_work(wq, &work->work);
1352 } else
1353 kfree(work);
1354
1355 kfree(hits);
1356 return 0;
1357
1358 out:
1359 kfree(work);
1360 return ret;
1361 }
1362
1363 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1364 {
1365 switch (event) {
1366 case NETDEV_UP:
1367 case NETDEV_CHANGEADDR:
1368 update_ipv6_gids(dev, port, 0);
1369 break;
1370
1371 case NETDEV_DOWN:
1372 update_ipv6_gids(dev, port, 1);
1373 dev->iboe.netdevs[port - 1] = NULL;
1374 }
1375 }
1376
1377 static void netdev_added(struct mlx4_ib_dev *dev, int port)
1378 {
1379 update_ipv6_gids(dev, port, 0);
1380 }
1381
1382 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1383 {
1384 update_ipv6_gids(dev, port, 1);
1385 }
1386
1387 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1388 void *ptr)
1389 {
1390 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1391 struct mlx4_ib_dev *ibdev;
1392 struct net_device *oldnd;
1393 struct mlx4_ib_iboe *iboe;
1394 int port;
1395
1396 if (!net_eq(dev_net(dev), &init_net))
1397 return NOTIFY_DONE;
1398
1399 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1400 iboe = &ibdev->iboe;
1401
1402 spin_lock(&iboe->lock);
1403 mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1404 oldnd = iboe->netdevs[port - 1];
1405 iboe->netdevs[port - 1] =
1406 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1407 if (oldnd != iboe->netdevs[port - 1]) {
1408 if (iboe->netdevs[port - 1])
1409 netdev_added(ibdev, port);
1410 else
1411 netdev_removed(ibdev, port);
1412 }
1413 }
1414
1415 if (dev == iboe->netdevs[0] ||
1416 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
1417 handle_en_event(ibdev, 1, event);
1418 else if (dev == iboe->netdevs[1]
1419 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
1420 handle_en_event(ibdev, 2, event);
1421
1422 spin_unlock(&iboe->lock);
1423
1424 return NOTIFY_DONE;
1425 }
1426
1427 static void init_pkeys(struct mlx4_ib_dev *ibdev)
1428 {
1429 int port;
1430 int slave;
1431 int i;
1432
1433 if (mlx4_is_master(ibdev->dev)) {
1434 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) {
1435 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1436 for (i = 0;
1437 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1438 ++i) {
1439 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] =
1440 /* master has the identity virt2phys pkey mapping */
1441 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i :
1442 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1;
1443 mlx4_sync_pkey_table(ibdev->dev, slave, port, i,
1444 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]);
1445 }
1446 }
1447 }
1448 /* initialize pkey cache */
1449 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) {
1450 for (i = 0;
1451 i < ibdev->dev->phys_caps.pkey_phys_table_len[port];
1452 ++i)
1453 ibdev->pkeys.phys_pkey_cache[port-1][i] =
1454 (i) ? 0 : 0xFFFF;
1455 }
1456 }
1457 }
1458
1459 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1460 {
1461 char name[32];
1462 int eq_per_port = 0;
1463 int added_eqs = 0;
1464 int total_eqs = 0;
1465 int i, j, eq;
1466
1467 /* Legacy mode or comp_pool is not large enough */
1468 if (dev->caps.comp_pool == 0 ||
1469 dev->caps.num_ports > dev->caps.comp_pool)
1470 return;
1471
1472 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
1473 dev->caps.num_ports);
1474
1475 /* Init eq table */
1476 added_eqs = 0;
1477 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1478 added_eqs += eq_per_port;
1479
1480 total_eqs = dev->caps.num_comp_vectors + added_eqs;
1481
1482 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1483 if (!ibdev->eq_table)
1484 return;
1485
1486 ibdev->eq_added = added_eqs;
1487
1488 eq = 0;
1489 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1490 for (j = 0; j < eq_per_port; j++) {
1491 sprintf(name, "mlx4-ib-%d-%d@%s",
1492 i, j, dev->pdev->bus->name);
1493 /* Set IRQ for specific name (per ring) */
1494 if (mlx4_assign_eq(dev, name, NULL,
1495 &ibdev->eq_table[eq])) {
1496 /* Use legacy (same as mlx4_en driver) */
1497 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
1498 ibdev->eq_table[eq] =
1499 (eq % dev->caps.num_comp_vectors);
1500 }
1501 eq++;
1502 }
1503 }
1504
1505 /* Fill the reset of the vector with legacy EQ */
1506 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
1507 ibdev->eq_table[eq++] = i;
1508
1509 /* Advertise the new number of EQs to clients */
1510 ibdev->ib_dev.num_comp_vectors = total_eqs;
1511 }
1512
1513 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1514 {
1515 int i;
1516
1517 /* no additional eqs were added */
1518 if (!ibdev->eq_table)
1519 return;
1520
1521 /* Reset the advertised EQ number */
1522 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1523
1524 /* Free only the added eqs */
1525 for (i = 0; i < ibdev->eq_added; i++) {
1526 /* Don't free legacy eqs if used */
1527 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
1528 continue;
1529 mlx4_release_eq(dev, ibdev->eq_table[i]);
1530 }
1531
1532 kfree(ibdev->eq_table);
1533 }
1534
1535 static void *mlx4_ib_add(struct mlx4_dev *dev)
1536 {
1537 struct mlx4_ib_dev *ibdev;
1538 int num_ports = 0;
1539 int i, j;
1540 int err;
1541 struct mlx4_ib_iboe *iboe;
1542
1543 pr_info_once("%s", mlx4_ib_version);
1544
1545 mlx4_foreach_non_ib_transport_port(i, dev)
1546 num_ports++;
1547
1548 if (mlx4_is_mfunc(dev) && num_ports) {
1549 dev_err(&dev->pdev->dev, "RoCE is not supported over SRIOV as yet\n");
1550 return NULL;
1551 }
1552
1553 num_ports = 0;
1554 mlx4_foreach_ib_transport_port(i, dev)
1555 num_ports++;
1556
1557 /* No point in registering a device with no ports... */
1558 if (num_ports == 0)
1559 return NULL;
1560
1561 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1562 if (!ibdev) {
1563 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1564 return NULL;
1565 }
1566
1567 iboe = &ibdev->iboe;
1568
1569 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1570 goto err_dealloc;
1571
1572 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1573 goto err_pd;
1574
1575 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1576 PAGE_SIZE);
1577 if (!ibdev->uar_map)
1578 goto err_uar;
1579 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1580
1581 ibdev->dev = dev;
1582
1583 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1584 ibdev->ib_dev.owner = THIS_MODULE;
1585 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
1586 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
1587 ibdev->num_ports = num_ports;
1588 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
1589 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1590 ibdev->ib_dev.dma_device = &dev->pdev->dev;
1591
1592 if (dev->caps.userspace_caps)
1593 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
1594 else
1595 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
1596
1597 ibdev->ib_dev.uverbs_cmd_mask =
1598 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1599 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1600 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1601 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1602 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1603 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1604 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1605 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1606 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1607 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1608 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1609 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1610 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1611 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1612 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1613 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1614 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1615 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1616 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1617 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1618 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
1619 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1620 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1621
1622 ibdev->ib_dev.query_device = mlx4_ib_query_device;
1623 ibdev->ib_dev.query_port = mlx4_ib_query_port;
1624 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
1625 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
1626 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
1627 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
1628 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
1629 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
1630 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
1631 ibdev->ib_dev.mmap = mlx4_ib_mmap;
1632 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
1633 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
1634 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
1635 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
1636 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
1637 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
1638 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
1639 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
1640 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
1641 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
1642 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
1643 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
1644 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
1645 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
1646 ibdev->ib_dev.post_send = mlx4_ib_post_send;
1647 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
1648 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
1649 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
1650 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
1651 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
1652 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
1653 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
1654 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
1655 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
1656 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
1657 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1658 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1659 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
1660 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
1661 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
1662 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
1663
1664 if (!mlx4_is_slave(ibdev->dev)) {
1665 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
1666 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
1667 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
1668 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
1669 }
1670
1671 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
1672 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
1673 ibdev->ib_dev.alloc_mw = mlx4_ib_alloc_mw;
1674 ibdev->ib_dev.bind_mw = mlx4_ib_bind_mw;
1675 ibdev->ib_dev.dealloc_mw = mlx4_ib_dealloc_mw;
1676
1677 ibdev->ib_dev.uverbs_cmd_mask |=
1678 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
1679 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW);
1680 }
1681
1682 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
1683 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
1684 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
1685 ibdev->ib_dev.uverbs_cmd_mask |=
1686 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1687 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1688 }
1689
1690 if (check_flow_steering_support(dev)) {
1691 ibdev->ib_dev.create_flow = mlx4_ib_create_flow;
1692 ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow;
1693
1694 #ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
1695 ibdev->ib_dev.uverbs_cmd_mask |=
1696 (1ull << IB_USER_VERBS_CMD_CREATE_FLOW) |
1697 (1ull << IB_USER_VERBS_CMD_DESTROY_FLOW);
1698 #endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
1699 }
1700
1701 mlx4_ib_alloc_eqs(dev, ibdev);
1702
1703 spin_lock_init(&iboe->lock);
1704
1705 if (init_node_data(ibdev))
1706 goto err_map;
1707
1708 for (i = 0; i < ibdev->num_ports; ++i) {
1709 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
1710 IB_LINK_LAYER_ETHERNET) {
1711 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
1712 if (err)
1713 ibdev->counters[i] = -1;
1714 } else
1715 ibdev->counters[i] = -1;
1716 }
1717
1718 spin_lock_init(&ibdev->sm_lock);
1719 mutex_init(&ibdev->cap_mask_mutex);
1720
1721 if (ib_register_device(&ibdev->ib_dev, NULL))
1722 goto err_counter;
1723
1724 if (mlx4_ib_mad_init(ibdev))
1725 goto err_reg;
1726
1727 if (mlx4_ib_init_sriov(ibdev))
1728 goto err_mad;
1729
1730 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1731 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1732 err = register_netdevice_notifier(&iboe->nb);
1733 if (err)
1734 goto err_sriov;
1735 }
1736
1737 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
1738 if (device_create_file(&ibdev->ib_dev.dev,
1739 mlx4_class_attributes[j]))
1740 goto err_notif;
1741 }
1742
1743 ibdev->ib_active = true;
1744
1745 if (mlx4_is_mfunc(ibdev->dev))
1746 init_pkeys(ibdev);
1747
1748 /* create paravirt contexts for any VFs which are active */
1749 if (mlx4_is_master(ibdev->dev)) {
1750 for (j = 0; j < MLX4_MFUNC_MAX; j++) {
1751 if (j == mlx4_master_func_num(ibdev->dev))
1752 continue;
1753 if (mlx4_is_slave_active(ibdev->dev, j))
1754 do_slave_init(ibdev, j, 1);
1755 }
1756 }
1757 return ibdev;
1758
1759 err_notif:
1760 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1761 pr_warn("failure unregistering notifier\n");
1762 flush_workqueue(wq);
1763
1764 err_sriov:
1765 mlx4_ib_close_sriov(ibdev);
1766
1767 err_mad:
1768 mlx4_ib_mad_cleanup(ibdev);
1769
1770 err_reg:
1771 ib_unregister_device(&ibdev->ib_dev);
1772
1773 err_counter:
1774 for (; i; --i)
1775 if (ibdev->counters[i - 1] != -1)
1776 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1777
1778 err_map:
1779 iounmap(ibdev->uar_map);
1780
1781 err_uar:
1782 mlx4_uar_free(dev, &ibdev->priv_uar);
1783
1784 err_pd:
1785 mlx4_pd_free(dev, ibdev->priv_pdn);
1786
1787 err_dealloc:
1788 ib_dealloc_device(&ibdev->ib_dev);
1789
1790 return NULL;
1791 }
1792
1793 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1794 {
1795 struct mlx4_ib_dev *ibdev = ibdev_ptr;
1796 int p;
1797
1798 mlx4_ib_close_sriov(ibdev);
1799 mlx4_ib_mad_cleanup(ibdev);
1800 ib_unregister_device(&ibdev->ib_dev);
1801 if (ibdev->iboe.nb.notifier_call) {
1802 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1803 pr_warn("failure unregistering notifier\n");
1804 ibdev->iboe.nb.notifier_call = NULL;
1805 }
1806 iounmap(ibdev->uar_map);
1807 for (p = 0; p < ibdev->num_ports; ++p)
1808 if (ibdev->counters[p] != -1)
1809 mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
1810 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1811 mlx4_CLOSE_PORT(dev, p);
1812
1813 mlx4_ib_free_eqs(dev, ibdev);
1814
1815 mlx4_uar_free(dev, &ibdev->priv_uar);
1816 mlx4_pd_free(dev, ibdev->priv_pdn);
1817 ib_dealloc_device(&ibdev->ib_dev);
1818 }
1819
1820 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
1821 {
1822 struct mlx4_ib_demux_work **dm = NULL;
1823 struct mlx4_dev *dev = ibdev->dev;
1824 int i;
1825 unsigned long flags;
1826
1827 if (!mlx4_is_master(dev))
1828 return;
1829
1830 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC);
1831 if (!dm) {
1832 pr_err("failed to allocate memory for tunneling qp update\n");
1833 goto out;
1834 }
1835
1836 for (i = 0; i < dev->caps.num_ports; i++) {
1837 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
1838 if (!dm[i]) {
1839 pr_err("failed to allocate memory for tunneling qp update work struct\n");
1840 for (i = 0; i < dev->caps.num_ports; i++) {
1841 if (dm[i])
1842 kfree(dm[i]);
1843 }
1844 goto out;
1845 }
1846 }
1847 /* initialize or tear down tunnel QPs for the slave */
1848 for (i = 0; i < dev->caps.num_ports; i++) {
1849 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
1850 dm[i]->port = i + 1;
1851 dm[i]->slave = slave;
1852 dm[i]->do_init = do_init;
1853 dm[i]->dev = ibdev;
1854 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
1855 if (!ibdev->sriov.is_going_down)
1856 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
1857 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
1858 }
1859 out:
1860 kfree(dm);
1861 return;
1862 }
1863
1864 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1865 enum mlx4_dev_event event, unsigned long param)
1866 {
1867 struct ib_event ibev;
1868 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1869 struct mlx4_eqe *eqe = NULL;
1870 struct ib_event_work *ew;
1871 int p = 0;
1872
1873 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
1874 eqe = (struct mlx4_eqe *)param;
1875 else
1876 p = (int) param;
1877
1878 switch (event) {
1879 case MLX4_DEV_EVENT_PORT_UP:
1880 if (p > ibdev->num_ports)
1881 return;
1882 if (mlx4_is_master(dev) &&
1883 rdma_port_get_link_layer(&ibdev->ib_dev, p) ==
1884 IB_LINK_LAYER_INFINIBAND) {
1885 mlx4_ib_invalidate_all_guid_record(ibdev, p);
1886 }
1887 ibev.event = IB_EVENT_PORT_ACTIVE;
1888 break;
1889
1890 case MLX4_DEV_EVENT_PORT_DOWN:
1891 if (p > ibdev->num_ports)
1892 return;
1893 ibev.event = IB_EVENT_PORT_ERR;
1894 break;
1895
1896 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1897 ibdev->ib_active = false;
1898 ibev.event = IB_EVENT_DEVICE_FATAL;
1899 break;
1900
1901 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
1902 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
1903 if (!ew) {
1904 pr_err("failed to allocate memory for events work\n");
1905 break;
1906 }
1907
1908 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
1909 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
1910 ew->ib_dev = ibdev;
1911 /* need to queue only for port owner, which uses GEN_EQE */
1912 if (mlx4_is_master(dev))
1913 queue_work(wq, &ew->work);
1914 else
1915 handle_port_mgmt_change_event(&ew->work);
1916 return;
1917
1918 case MLX4_DEV_EVENT_SLAVE_INIT:
1919 /* here, p is the slave id */
1920 do_slave_init(ibdev, p, 1);
1921 return;
1922
1923 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
1924 /* here, p is the slave id */
1925 do_slave_init(ibdev, p, 0);
1926 return;
1927
1928 default:
1929 return;
1930 }
1931
1932 ibev.device = ibdev_ptr;
1933 ibev.element.port_num = (u8) p;
1934
1935 ib_dispatch_event(&ibev);
1936 }
1937
1938 static struct mlx4_interface mlx4_ib_interface = {
1939 .add = mlx4_ib_add,
1940 .remove = mlx4_ib_remove,
1941 .event = mlx4_ib_event,
1942 .protocol = MLX4_PROT_IB_IPV6
1943 };
1944
1945 static int __init mlx4_ib_init(void)
1946 {
1947 int err;
1948
1949 wq = create_singlethread_workqueue("mlx4_ib");
1950 if (!wq)
1951 return -ENOMEM;
1952
1953 err = mlx4_ib_mcg_init();
1954 if (err)
1955 goto clean_wq;
1956
1957 err = mlx4_register_interface(&mlx4_ib_interface);
1958 if (err)
1959 goto clean_mcg;
1960
1961 return 0;
1962
1963 clean_mcg:
1964 mlx4_ib_mcg_destroy();
1965
1966 clean_wq:
1967 destroy_workqueue(wq);
1968 return err;
1969 }
1970
1971 static void __exit mlx4_ib_cleanup(void)
1972 {
1973 mlx4_unregister_interface(&mlx4_ib_interface);
1974 mlx4_ib_mcg_destroy();
1975 destroy_workqueue(wq);
1976 }
1977
1978 module_init(mlx4_ib_init);
1979 module_exit(mlx4_ib_cleanup);
Linux kernel - Deliverables
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