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