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IB/mlx4: Initialize SR-IOV IB support for slaves in master context
[linux-2.6-block.git] / drivers / infiniband / hw / mlx4 / main.c
CommitLineData
225c7b1f
RD		 1/*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
51a379d0 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
225c7b1f
RD		 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>
5a0e3ad6 36#include <linux/slab.h>
225c7b1f 37#include <linux/errno.h>
fa417f7b
EC		 38#include <linux/netdevice.h>
39#include <linux/inetdevice.h>
40#include <linux/rtnetlink.h>
4c3eb3ca 41#include <linux/if_vlan.h>
225c7b1f
RD		 42
43#include <rdma/ib_smi.h>
44#include <rdma/ib_user_verbs.h>
fa417f7b 45#include <rdma/ib_addr.h>
225c7b1f
RD		 46
47#include <linux/mlx4/driver.h>
48#include <linux/mlx4/cmd.h>
49
50#include "mlx4_ib.h"
51#include "user.h"
52
b1d8eb5a 53#define DRV_NAME MLX4_IB_DRV_NAME
068c4ea1
JM		 54#define DRV_VERSION "1.0"
55#define DRV_RELDATE "April 4, 2008"
225c7b1f
RD		 56
57MODULE_AUTHOR("Roland Dreier");
58MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
59MODULE_LICENSE("Dual BSD/GPL");
60MODULE_VERSION(DRV_VERSION);
61
68f3948d 62static const char mlx4_ib_version[] =
225c7b1f
RD		 63 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
64 DRV_VERSION " (" DRV_RELDATE ")\n";
65
fa417f7b
EC		 66struct update_gid_work {
67 struct work_struct work;
68 union ib_gid gids[128];
69 struct mlx4_ib_dev *dev;
70 int port;
71};
72
73static struct workqueue_struct *wq;
74
225c7b1f
RD		 75static void init_query_mad(struct ib_smp *mad)
76{
77 mad->base_version = 1;
78 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
79 mad->class_version = 1;
80 mad->method = IB_MGMT_METHOD_GET;
81}
82
4c3eb3ca
EC		 83static union ib_gid zgid;
84
225c7b1f
RD		 85static int mlx4_ib_query_device(struct ib_device *ibdev,
86 struct ib_device_attr *props)
87{
88 struct mlx4_ib_dev *dev = to_mdev(ibdev);
89 struct ib_smp *in_mad = NULL;
90 struct ib_smp *out_mad = NULL;
91 int err = -ENOMEM;
92
93 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
94 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
95 if (!in_mad || !out_mad)
96 goto out;
97
98 init_query_mad(in_mad);
99 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
100
101 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
102 if (err)
103 goto out;
104
105 memset(props, 0, sizeof *props);
106
107 props->fw_ver = dev->dev->caps.fw_ver;
108 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
109 IB_DEVICE_PORT_ACTIVE_EVENT |
110 IB_DEVICE_SYS_IMAGE_GUID |
521e575b
RL		 111 IB_DEVICE_RC_RNR_NAK_GEN |
112 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
225c7b1f
RD		 113 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
114 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
115 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
116 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
117 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
118 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
119 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
120 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
8ff095ec
EC		 121 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
122 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
417608c2 123 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
b832be1e 124 props->device_cap_flags |= IB_DEVICE_UD_TSO;
95d04f07
RD		 125 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
126 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
127 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
128 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
129 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
130 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
0a1405da
SH		 131 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
132 props->device_cap_flags |= IB_DEVICE_XRC;
225c7b1f
RD		 133
134 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
135 0xffffff;
136 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
137 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
138 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
139
140 props->max_mr_size = ~0ull;
141 props->page_size_cap = dev->dev->caps.page_size_cap;
142 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
fc2d0044 143 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
225c7b1f
RD		 144 props->max_sge = min(dev->dev->caps.max_sq_sg,
145 dev->dev->caps.max_rq_sg);
146 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
147 props->max_cqe = dev->dev->caps.max_cqes;
148 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
149 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
150 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
151 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
152 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
153 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
c8681f14 154 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
225c7b1f 155 props->max_srq_sge = dev->dev->caps.max_srq_sge;
5a0fd094 156 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
225c7b1f
RD		 157 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
158 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
159 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
47e956b2 160 props->masked_atomic_cap = props->atomic_cap;
5ae2a7a8 161 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
225c7b1f
RD		 162 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
163 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
164 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
165 props->max_mcast_grp;
a5bbe892 166 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
225c7b1f
RD		 167
168out:
169 kfree(in_mad);
170 kfree(out_mad);
171
172 return err;
173}
174
fa417f7b
EC		 175static enum rdma_link_layer
176mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
225c7b1f 177{
fa417f7b 178 struct mlx4_dev *dev = to_mdev(device)->dev;
225c7b1f 179
65dab25d 180 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
fa417f7b
EC		 181 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
182}
225c7b1f 183
fa417f7b 184static int ib_link_query_port(struct ib_device *ibdev, u8 port,
a9c766bb 185 struct ib_port_attr *props)
fa417f7b 186{
a9c766bb
OG		 187 struct ib_smp *in_mad = NULL;
188 struct ib_smp *out_mad = NULL;
a5e12dff 189 int ext_active_speed;
a9c766bb
OG		 190 int err = -ENOMEM;
191
192 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
193 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
194 if (!in_mad || !out_mad)
195 goto out;
196
197 init_query_mad(in_mad);
198 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
199 in_mad->attr_mod = cpu_to_be32(port);
200
201 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL,
202 in_mad, out_mad);
203 if (err)
204 goto out;
205
a5e12dff 206
225c7b1f
RD		 207 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
208 props->lmc = out_mad->data[34] & 0x7;
209 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
210 props->sm_sl = out_mad->data[36] & 0xf;
211 props->state = out_mad->data[32] & 0xf;
212 props->phys_state = out_mad->data[33] >> 4;
213 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
5ae2a7a8 214 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
149983af 215 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
5ae2a7a8 216 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
225c7b1f
RD		 217 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
218 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
219 props->active_width = out_mad->data[31] & 0xf;
220 props->active_speed = out_mad->data[35] >> 4;
221 props->max_mtu = out_mad->data[41] & 0xf;
222 props->active_mtu = out_mad->data[36] >> 4;
223 props->subnet_timeout = out_mad->data[51] & 0x1f;
224 props->max_vl_num = out_mad->data[37] >> 4;
225 props->init_type_reply = out_mad->data[41] >> 4;
226
a5e12dff
MA		 227 /* Check if extended speeds (EDR/FDR/...) are supported */
228 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
229 ext_active_speed = out_mad->data[62] >> 4;
230
231 switch (ext_active_speed) {
232 case 1:
2e96691c 233 props->active_speed = IB_SPEED_FDR;
a5e12dff
MA		 234 break;
235 case 2:
2e96691c 236 props->active_speed = IB_SPEED_EDR;
a5e12dff
MA		 237 break;
238 }
239 }
240
241 /* If reported active speed is QDR, check if is FDR-10 */
2e96691c 242 if (props->active_speed == IB_SPEED_QDR) {
8154c07f
OG		 243 init_query_mad(in_mad);
244 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
245 in_mad->attr_mod = cpu_to_be32(port);
246
247 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port,
248 NULL, NULL, in_mad, out_mad);
249 if (err)
bf6b47de 250 goto out;
8154c07f
OG		 251
252 /* Checking LinkSpeedActive for FDR-10 */
253 if (out_mad->data[15] & 0x1)
254 props->active_speed = IB_SPEED_FDR10;
a5e12dff 255 }
d2ef4068
OG		 256
257 /* Avoid wrong speed value returned by FW if the IB link is down. */
258 if (props->state == IB_PORT_DOWN)
259 props->active_speed = IB_SPEED_SDR;
260
a9c766bb
OG		 261out:
262 kfree(in_mad);
263 kfree(out_mad);
264 return err;
fa417f7b
EC		 265}
266
267static u8 state_to_phys_state(enum ib_port_state state)
268{
269 return state == IB_PORT_ACTIVE ? 5 : 3;
270}
271
272static int eth_link_query_port(struct ib_device *ibdev, u8 port,
a9c766bb 273 struct ib_port_attr *props)
fa417f7b 274{
a9c766bb
OG		 275
276 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
277 struct mlx4_ib_iboe *iboe = &mdev->iboe;
fa417f7b
EC		 278 struct net_device *ndev;
279 enum ib_mtu tmp;
a9c766bb
OG		 280 struct mlx4_cmd_mailbox *mailbox;
281 int err = 0;
282
283 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
284 if (IS_ERR(mailbox))
285 return PTR_ERR(mailbox);
fa417f7b 286
a9c766bb
OG		 287 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
288 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
289 MLX4_CMD_WRAPPED);
290 if (err)
291 goto out;
292
293 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ?
294 IB_WIDTH_4X : IB_WIDTH_1X;
2e96691c 295 props->active_speed = IB_SPEED_QDR;
fa417f7b 296 props->port_cap_flags = IB_PORT_CM_SUP;
a9c766bb
OG		 297 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
298 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
fa417f7b 299 props->pkey_tbl_len = 1;
bcacb897 300 props->max_mtu = IB_MTU_4096;
a9c766bb 301 props->max_vl_num = 2;
fa417f7b
EC		 302 props->state = IB_PORT_DOWN;
303 props->phys_state = state_to_phys_state(props->state);
304 props->active_mtu = IB_MTU_256;
305 spin_lock(&iboe->lock);
306 ndev = iboe->netdevs[port - 1];
307 if (!ndev)
a9c766bb 308 goto out_unlock;
fa417f7b
EC		 309
310 tmp = iboe_get_mtu(ndev->mtu);
311 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
312
21d60609 313 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
fa417f7b
EC		 314 IB_PORT_ACTIVE : IB_PORT_DOWN;
315 props->phys_state = state_to_phys_state(props->state);
a9c766bb 316out_unlock:
fa417f7b 317 spin_unlock(&iboe->lock);
a9c766bb
OG		 318out:
319 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
320 return err;
fa417f7b
EC		 321}
322
323static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
324 struct ib_port_attr *props)
325{
a9c766bb 326 int err;
fa417f7b
EC		 327
328 memset(props, 0, sizeof *props);
329
fa417f7b 330 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
a9c766bb
OG		 331 ib_link_query_port(ibdev, port, props) :
332 eth_link_query_port(ibdev, port, props);
225c7b1f
RD		 333
334 return err;
335}
336
fa417f7b
EC		 337static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
338 union ib_gid *gid)
225c7b1f
RD		 339{
340 struct ib_smp *in_mad = NULL;
341 struct ib_smp *out_mad = NULL;
342 int err = -ENOMEM;
343
344 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
345 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
346 if (!in_mad || !out_mad)
347 goto out;
348
349 init_query_mad(in_mad);
350 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
351 in_mad->attr_mod = cpu_to_be32(port);
352
353 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
354 if (err)
355 goto out;
356
357 memcpy(gid->raw, out_mad->data + 8, 8);
358
359 init_query_mad(in_mad);
360 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
361 in_mad->attr_mod = cpu_to_be32(index / 8);
362
363 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
364 if (err)
365 goto out;
366
367 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
368
369out:
370 kfree(in_mad);
371 kfree(out_mad);
372 return err;
373}
374
fa417f7b
EC		 375static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
376 union ib_gid *gid)
377{
378 struct mlx4_ib_dev *dev = to_mdev(ibdev);
379
380 *gid = dev->iboe.gid_table[port - 1][index];
381
382 return 0;
383}
384
385static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
386 union ib_gid *gid)
387{
388 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
389 return __mlx4_ib_query_gid(ibdev, port, index, gid);
390 else
391 return iboe_query_gid(ibdev, port, index, gid);
392}
393
225c7b1f
RD		 394static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
395 u16 *pkey)
396{
397 struct ib_smp *in_mad = NULL;
398 struct ib_smp *out_mad = NULL;
399 int err = -ENOMEM;
400
401 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
402 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
403 if (!in_mad || !out_mad)
404 goto out;
405
406 init_query_mad(in_mad);
407 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
408 in_mad->attr_mod = cpu_to_be32(index / 32);
409
410 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
411 if (err)
412 goto out;
413
414 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
415
416out:
417 kfree(in_mad);
418 kfree(out_mad);
419 return err;
420}
421
422static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
423 struct ib_device_modify *props)
424{
d0d68b86 425 struct mlx4_cmd_mailbox *mailbox;
df7fba66 426 unsigned long flags;
d0d68b86 427
225c7b1f
RD		 428 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
429 return -EOPNOTSUPP;
430
d0d68b86
JM		 431 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
432 return 0;
433
df7fba66 434 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags);
d0d68b86 435 memcpy(ibdev->node_desc, props->node_desc, 64);
df7fba66 436 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags);
d0d68b86
JM		 437
438 /*
439 * If possible, pass node desc to FW, so it can generate
440 * a 144 trap. If cmd fails, just ignore.
441 */
442 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
443 if (IS_ERR(mailbox))
444 return 0;
445
446 memset(mailbox->buf, 0, 256);
447 memcpy(mailbox->buf, props->node_desc, 64);
448 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
f9baff50 449 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
d0d68b86
JM		 450
451 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
225c7b1f
RD		 452
453 return 0;
454}
455
456static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
457 u32 cap_mask)
458{
459 struct mlx4_cmd_mailbox *mailbox;
460 int err;
fa417f7b 461 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
225c7b1f
RD		 462
463 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
464 if (IS_ERR(mailbox))
465 return PTR_ERR(mailbox);
466
467 memset(mailbox->buf, 0, 256);
5ae2a7a8
RD		 468
469 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
470 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
471 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
472 } else {
473 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
474 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
475 }
225c7b1f 476
fa417f7b 477 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
f9baff50 478 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
225c7b1f
RD		 479
480 mlx4_free_cmd_mailbox(dev->dev, mailbox);
481 return err;
482}
483
484static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
485 struct ib_port_modify *props)
486{
487 struct ib_port_attr attr;
488 u32 cap_mask;
489 int err;
490
491 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
492
493 err = mlx4_ib_query_port(ibdev, port, &attr);
494 if (err)
495 goto out;
496
497 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
498 ~props->clr_port_cap_mask;
499
500 err = mlx4_SET_PORT(to_mdev(ibdev), port,
501 !!(mask & IB_PORT_RESET_QKEY_CNTR),
502 cap_mask);
503
504out:
505 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
506 return err;
507}
508
509static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
510 struct ib_udata *udata)
511{
512 struct mlx4_ib_dev *dev = to_mdev(ibdev);
513 struct mlx4_ib_ucontext *context;
514 struct mlx4_ib_alloc_ucontext_resp resp;
515 int err;
516
3b4a8cd5
JM		 517 if (!dev->ib_active)
518 return ERR_PTR(-EAGAIN);
519
225c7b1f
RD		 520 resp.qp_tab_size = dev->dev->caps.num_qps;
521 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
522 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
523
524 context = kmalloc(sizeof *context, GFP_KERNEL);
525 if (!context)
526 return ERR_PTR(-ENOMEM);
527
528 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
529 if (err) {
530 kfree(context);
531 return ERR_PTR(err);
532 }
533
534 INIT_LIST_HEAD(&context->db_page_list);
535 mutex_init(&context->db_page_mutex);
536
537 err = ib_copy_to_udata(udata, &resp, sizeof resp);
538 if (err) {
539 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
540 kfree(context);
541 return ERR_PTR(-EFAULT);
542 }
543
544 return &context->ibucontext;
545}
546
547static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
548{
549 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
550
551 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
552 kfree(context);
553
554 return 0;
555}
556
557static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
558{
559 struct mlx4_ib_dev *dev = to_mdev(context->device);
560
561 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
562 return -EINVAL;
563
564 if (vma->vm_pgoff == 0) {
565 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
566
567 if (io_remap_pfn_range(vma, vma->vm_start,
568 to_mucontext(context)->uar.pfn,
569 PAGE_SIZE, vma->vm_page_prot))
570 return -EAGAIN;
571 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
e1d60ec6 572 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
225c7b1f
RD		 573
574 if (io_remap_pfn_range(vma, vma->vm_start,
575 to_mucontext(context)->uar.pfn +
576 dev->dev->caps.num_uars,
577 PAGE_SIZE, vma->vm_page_prot))
578 return -EAGAIN;
579 } else
580 return -EINVAL;
581
582 return 0;
583}
584
585static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
586 struct ib_ucontext *context,
587 struct ib_udata *udata)
588{
589 struct mlx4_ib_pd *pd;
590 int err;
591
592 pd = kmalloc(sizeof *pd, GFP_KERNEL);
593 if (!pd)
594 return ERR_PTR(-ENOMEM);
595
596 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
597 if (err) {
598 kfree(pd);
599 return ERR_PTR(err);
600 }
601
602 if (context)
603 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
604 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
605 kfree(pd);
606 return ERR_PTR(-EFAULT);
607 }
608
609 return &pd->ibpd;
610}
611
612static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
613{
614 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
615 kfree(pd);
616
617 return 0;
618}
619
012a8ff5
SH		 620static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
621 struct ib_ucontext *context,
622 struct ib_udata *udata)
623{
624 struct mlx4_ib_xrcd *xrcd;
625 int err;
626
627 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
628 return ERR_PTR(-ENOSYS);
629
630 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
631 if (!xrcd)
632 return ERR_PTR(-ENOMEM);
633
634 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
635 if (err)
636 goto err1;
637
638 xrcd->pd = ib_alloc_pd(ibdev);
639 if (IS_ERR(xrcd->pd)) {
640 err = PTR_ERR(xrcd->pd);
641 goto err2;
642 }
643
644 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
645 if (IS_ERR(xrcd->cq)) {
646 err = PTR_ERR(xrcd->cq);
647 goto err3;
648 }
649
650 return &xrcd->ibxrcd;
651
652err3:
653 ib_dealloc_pd(xrcd->pd);
654err2:
655 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
656err1:
657 kfree(xrcd);
658 return ERR_PTR(err);
659}
660
661static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
662{
663 ib_destroy_cq(to_mxrcd(xrcd)->cq);
664 ib_dealloc_pd(to_mxrcd(xrcd)->pd);
665 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
666 kfree(xrcd);
667
668 return 0;
669}
670
fa417f7b
EC		 671static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
672{
673 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
674 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
675 struct mlx4_ib_gid_entry *ge;
676
677 ge = kzalloc(sizeof *ge, GFP_KERNEL);
678 if (!ge)
679 return -ENOMEM;
680
681 ge->gid = *gid;
682 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
683 ge->port = mqp->port;
684 ge->added = 1;
685 }
686
687 mutex_lock(&mqp->mutex);
688 list_add_tail(&ge->list, &mqp->gid_list);
689 mutex_unlock(&mqp->mutex);
690
691 return 0;
692}
693
694int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
695 union ib_gid *gid)
696{
697 u8 mac[6];
698 struct net_device *ndev;
699 int ret = 0;
700
701 if (!mqp->port)
702 return 0;
703
704 spin_lock(&mdev->iboe.lock);
705 ndev = mdev->iboe.netdevs[mqp->port - 1];
706 if (ndev)
707 dev_hold(ndev);
708 spin_unlock(&mdev->iboe.lock);
709
710 if (ndev) {
711 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
712 rtnl_lock();
713 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
714 ret = 1;
715 rtnl_unlock();
716 dev_put(ndev);
717 }
718
719 return ret;
720}
721
0ff1fb65
HHZ		 722struct mlx4_ib_steering {
723 struct list_head list;
724 u64 reg_id;
725 union ib_gid gid;
726};
727
225c7b1f
RD		 728static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
729{
fa417f7b
EC		 730 int err;
731 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
732 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
0ff1fb65
HHZ		 733 u64 reg_id;
734 struct mlx4_ib_steering *ib_steering = NULL;
735
736 if (mdev->dev->caps.steering_mode ==
737 MLX4_STEERING_MODE_DEVICE_MANAGED) {
738 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL);
739 if (!ib_steering)
740 return -ENOMEM;
741 }
fa417f7b 742
0ff1fb65
HHZ		 743 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port,
744 !!(mqp->flags &
745 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
746 MLX4_PROT_IB_IPV6, &reg_id);
fa417f7b 747 if (err)
0ff1fb65 748 goto err_malloc;
fa417f7b
EC		 749
750 err = add_gid_entry(ibqp, gid);
751 if (err)
752 goto err_add;
753
0ff1fb65
HHZ		 754 if (ib_steering) {
755 memcpy(ib_steering->gid.raw, gid->raw, 16);
756 ib_steering->reg_id = reg_id;
757 mutex_lock(&mqp->mutex);
758 list_add(&ib_steering->list, &mqp->steering_rules);
759 mutex_unlock(&mqp->mutex);
760 }
fa417f7b
EC		 761 return 0;
762
763err_add:
0ff1fb65
HHZ		 764 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
765 MLX4_PROT_IB_IPV6, reg_id);
766err_malloc:
767 kfree(ib_steering);
768
fa417f7b
EC		 769 return err;
770}
771
772static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
773{
774 struct mlx4_ib_gid_entry *ge;
775 struct mlx4_ib_gid_entry *tmp;
776 struct mlx4_ib_gid_entry *ret = NULL;
777
778 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
779 if (!memcmp(raw, ge->gid.raw, 16)) {
780 ret = ge;
781 break;
782 }
783 }
784
785 return ret;
225c7b1f
RD		 786}
787
788static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
789{
fa417f7b
EC		 790 int err;
791 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
792 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
793 u8 mac[6];
794 struct net_device *ndev;
795 struct mlx4_ib_gid_entry *ge;
0ff1fb65
HHZ		 796 u64 reg_id = 0;
797
798 if (mdev->dev->caps.steering_mode ==
799 MLX4_STEERING_MODE_DEVICE_MANAGED) {
800 struct mlx4_ib_steering *ib_steering;
801
802 mutex_lock(&mqp->mutex);
803 list_for_each_entry(ib_steering, &mqp->steering_rules, list) {
804 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) {
805 list_del(&ib_steering->list);
806 break;
807 }
808 }
809 mutex_unlock(&mqp->mutex);
810 if (&ib_steering->list == &mqp->steering_rules) {
811 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n");
812 return -EINVAL;
813 }
814 reg_id = ib_steering->reg_id;
815 kfree(ib_steering);
816 }
fa417f7b 817
0ff1fb65
HHZ		 818 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw,
819 MLX4_PROT_IB_IPV6, reg_id);
fa417f7b
EC		 820 if (err)
821 return err;
822
823 mutex_lock(&mqp->mutex);
824 ge = find_gid_entry(mqp, gid->raw);
825 if (ge) {
826 spin_lock(&mdev->iboe.lock);
827 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
828 if (ndev)
829 dev_hold(ndev);
830 spin_unlock(&mdev->iboe.lock);
831 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
832 if (ndev) {
833 rtnl_lock();
834 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
835 rtnl_unlock();
836 dev_put(ndev);
837 }
838 list_del(&ge->list);
839 kfree(ge);
840 } else
987c8f8f 841 pr_warn("could not find mgid entry\n");
fa417f7b
EC		 842
843 mutex_unlock(&mqp->mutex);
844
845 return 0;
225c7b1f
RD		 846}
847
848static int init_node_data(struct mlx4_ib_dev *dev)
849{
850 struct ib_smp *in_mad = NULL;
851 struct ib_smp *out_mad = NULL;
852 int err = -ENOMEM;
853
854 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
855 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
856 if (!in_mad || !out_mad)
857 goto out;
858
859 init_query_mad(in_mad);
860 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
861
862 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
863 if (err)
864 goto out;
865
866 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
867
868 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
869
870 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
871 if (err)
872 goto out;
873
874 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
875
876out:
877 kfree(in_mad);
878 kfree(out_mad);
879 return err;
880}
881
f4e91eb4
TJ		 882static ssize_t show_hca(struct device *device, struct device_attribute *attr,
883 char *buf)
cd9281d8 884{
f4e91eb4
TJ		 885 struct mlx4_ib_dev *dev =
886 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
cd9281d8
JM		 887 return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
888}
889
f4e91eb4
TJ		 890static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
891 char *buf)
cd9281d8 892{
f4e91eb4
TJ		 893 struct mlx4_ib_dev *dev =
894 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
cd9281d8
JM		 895 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
896 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
897 (int) dev->dev->caps.fw_ver & 0xffff);
898}
899
f4e91eb4
TJ		 900static ssize_t show_rev(struct device *device, struct device_attribute *attr,
901 char *buf)
cd9281d8 902{
f4e91eb4
TJ		 903 struct mlx4_ib_dev *dev =
904 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
cd9281d8
JM		 905 return sprintf(buf, "%x\n", dev->dev->rev_id);
906}
907
f4e91eb4
TJ		 908static ssize_t show_board(struct device *device, struct device_attribute *attr,
909 char *buf)
cd9281d8 910{
f4e91eb4
TJ		 911 struct mlx4_ib_dev *dev =
912 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
913 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
914 dev->dev->board_id);
cd9281d8
JM		 915}
916
f4e91eb4
TJ		 917static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
918static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
919static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
920static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
cd9281d8 921
f4e91eb4
TJ		 922static struct device_attribute *mlx4_class_attributes[] = {
923 &dev_attr_hw_rev,
924 &dev_attr_fw_ver,
925 &dev_attr_hca_type,
926 &dev_attr_board_id
cd9281d8
JM		 927};
928
4c3eb3ca 929static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
fa417f7b
EC		 930{
931 memcpy(eui, dev->dev_addr, 3);
932 memcpy(eui + 5, dev->dev_addr + 3, 3);
4c3eb3ca
EC		 933 if (vlan_id < 0x1000) {
934 eui[3] = vlan_id >> 8;
935 eui[4] = vlan_id & 0xff;
936 } else {
937 eui[3] = 0xff;
938 eui[4] = 0xfe;
939 }
fa417f7b
EC		 940 eui[0] ^= 2;
941}
942
943static void update_gids_task(struct work_struct *work)
944{
945 struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
946 struct mlx4_cmd_mailbox *mailbox;
947 union ib_gid *gids;
948 int err;
949 struct mlx4_dev *dev = gw->dev->dev;
fa417f7b
EC		 950
951 mailbox = mlx4_alloc_cmd_mailbox(dev);
952 if (IS_ERR(mailbox)) {
987c8f8f 953 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
fa417f7b
EC		 954 return;
955 }
956
957 gids = mailbox->buf;
958 memcpy(gids, gw->gids, sizeof gw->gids);
959
960 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
f9baff50
JM		 961 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
962 MLX4_CMD_NATIVE);
fa417f7b 963 if (err)
987c8f8f 964 pr_warn("set port command failed\n");
fa417f7b
EC		 965 else {
966 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
00f5ce99 967 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE);
fa417f7b
EC		 968 }
969
970 mlx4_free_cmd_mailbox(dev, mailbox);
971 kfree(gw);
972}
973
974static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
975{
976 struct net_device *ndev = dev->iboe.netdevs[port - 1];
977 struct update_gid_work *work;
4c3eb3ca
EC		 978 struct net_device *tmp;
979 int i;
980 u8 *hits;
981 int ret;
982 union ib_gid gid;
983 int free;
984 int found;
985 int need_update = 0;
986 u16 vid;
fa417f7b
EC		 987
988 work = kzalloc(sizeof *work, GFP_ATOMIC);
989 if (!work)
990 return -ENOMEM;
991
4c3eb3ca
EC		 992 hits = kzalloc(128, GFP_ATOMIC);
993 if (!hits) {
994 ret = -ENOMEM;
995 goto out;
996 }
997
22f4fbd9
ED		 998 rcu_read_lock();
999 for_each_netdev_rcu(&init_net, tmp) {
4c3eb3ca
EC		 1000 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
1001 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
1002 vid = rdma_vlan_dev_vlan_id(tmp);
1003 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
1004 found = 0;
1005 free = -1;
1006 for (i = 0; i < 128; ++i) {
1007 if (free < 0 &&
1008 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1009 free = i;
1010 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
1011 hits[i] = 1;
1012 found = 1;
1013 break;
1014 }
1015 }
1016
1017 if (!found) {
1018 if (tmp == ndev &&
1019 (memcmp(&dev->iboe.gid_table[port - 1][0],
1020 &gid, sizeof gid) ||
1021 !memcmp(&dev->iboe.gid_table[port - 1][0],
1022 &zgid, sizeof gid))) {
1023 dev->iboe.gid_table[port - 1][0] = gid;
1024 ++need_update;
1025 hits[0] = 1;
1026 } else if (free >= 0) {
1027 dev->iboe.gid_table[port - 1][free] = gid;
1028 hits[free] = 1;
1029 ++need_update;
1030 }
1031 }
1032 }
fa417f7b 1033 }
22f4fbd9 1034 rcu_read_unlock();
4c3eb3ca
EC		 1035
1036 for (i = 0; i < 128; ++i)
1037 if (!hits[i]) {
1038 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
1039 ++need_update;
1040 dev->iboe.gid_table[port - 1][i] = zgid;
1041 }
fa417f7b 1042
4c3eb3ca
EC		 1043 if (need_update) {
1044 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
1045 INIT_WORK(&work->work, update_gids_task);
1046 work->port = port;
1047 work->dev = dev;
1048 queue_work(wq, &work->work);
1049 } else
1050 kfree(work);
fa417f7b 1051
4c3eb3ca 1052 kfree(hits);
fa417f7b 1053 return 0;
4c3eb3ca
EC		 1054
1055out:
1056 kfree(work);
1057 return ret;
fa417f7b
EC		 1058}
1059
1060static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1061{
1062 switch (event) {
1063 case NETDEV_UP:
4c3eb3ca 1064 case NETDEV_CHANGEADDR:
fa417f7b
EC		 1065 update_ipv6_gids(dev, port, 0);
1066 break;
1067
1068 case NETDEV_DOWN:
1069 update_ipv6_gids(dev, port, 1);
1070 dev->iboe.netdevs[port - 1] = NULL;
1071 }
1072}
1073
1074static void netdev_added(struct mlx4_ib_dev *dev, int port)
1075{
1076 update_ipv6_gids(dev, port, 0);
1077}
1078
1079static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1080{
1081 update_ipv6_gids(dev, port, 1);
1082}
1083
1084static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1085 void *ptr)
1086{
1087 struct net_device *dev = ptr;
1088 struct mlx4_ib_dev *ibdev;
1089 struct net_device *oldnd;
1090 struct mlx4_ib_iboe *iboe;
1091 int port;
1092
1093 if (!net_eq(dev_net(dev), &init_net))
1094 return NOTIFY_DONE;
1095
1096 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1097 iboe = &ibdev->iboe;
1098
1099 spin_lock(&iboe->lock);
1100 mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1101 oldnd = iboe->netdevs[port - 1];
1102 iboe->netdevs[port - 1] =
0345584e 1103 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
fa417f7b
EC		 1104 if (oldnd != iboe->netdevs[port - 1]) {
1105 if (iboe->netdevs[port - 1])
1106 netdev_added(ibdev, port);
1107 else
1108 netdev_removed(ibdev, port);
1109 }
1110 }
1111
4c3eb3ca
EC		 1112 if (dev == iboe->netdevs[0] ||
1113 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
fa417f7b 1114 handle_en_event(ibdev, 1, event);
4c3eb3ca
EC		 1115 else if (dev == iboe->netdevs[1]
1116 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
fa417f7b
EC		 1117 handle_en_event(ibdev, 2, event);
1118
1119 spin_unlock(&iboe->lock);
1120
1121 return NOTIFY_DONE;
1122}
1123
e605b743
SP		 1124static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1125{
1126 char name[32];
1127 int eq_per_port = 0;
1128 int added_eqs = 0;
1129 int total_eqs = 0;
1130 int i, j, eq;
1131
3aac6ff1
SP		 1132 /* Legacy mode or comp_pool is not large enough */
1133 if (dev->caps.comp_pool == 0 ||
1134 dev->caps.num_ports > dev->caps.comp_pool)
e605b743
SP		 1135 return;
1136
1137 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
1138 dev->caps.num_ports);
1139
1140 /* Init eq table */
1141 added_eqs = 0;
1142 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
1143 added_eqs += eq_per_port;
1144
1145 total_eqs = dev->caps.num_comp_vectors + added_eqs;
1146
1147 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
1148 if (!ibdev->eq_table)
1149 return;
1150
1151 ibdev->eq_added = added_eqs;
1152
1153 eq = 0;
1154 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
1155 for (j = 0; j < eq_per_port; j++) {
1156 sprintf(name, "mlx4-ib-%d-%d@%s",
1157 i, j, dev->pdev->bus->name);
1158 /* Set IRQ for specific name (per ring) */
d9236c3f
AV		 1159 if (mlx4_assign_eq(dev, name, NULL,
1160 &ibdev->eq_table[eq])) {
e605b743
SP		 1161 /* Use legacy (same as mlx4_en driver) */
1162 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
1163 ibdev->eq_table[eq] =
1164 (eq % dev->caps.num_comp_vectors);
1165 }
1166 eq++;
1167 }
1168 }
1169
1170 /* Fill the reset of the vector with legacy EQ */
1171 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
1172 ibdev->eq_table[eq++] = i;
1173
1174 /* Advertise the new number of EQs to clients */
1175 ibdev->ib_dev.num_comp_vectors = total_eqs;
1176}
1177
1178static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
1179{
1180 int i;
3aac6ff1
SP		 1181
1182 /* no additional eqs were added */
1183 if (!ibdev->eq_table)
1184 return;
e605b743
SP		 1185
1186 /* Reset the advertised EQ number */
1187 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1188
1189 /* Free only the added eqs */
1190 for (i = 0; i < ibdev->eq_added; i++) {
1191 /* Don't free legacy eqs if used */
1192 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
1193 continue;
1194 mlx4_release_eq(dev, ibdev->eq_table[i]);
1195 }
1196
e605b743 1197 kfree(ibdev->eq_table);
e605b743
SP		 1198}
1199
225c7b1f
RD		 1200static void *mlx4_ib_add(struct mlx4_dev *dev)
1201{
1202 struct mlx4_ib_dev *ibdev;
22e7ef9c 1203 int num_ports = 0;
035b1032 1204 int i, j;
fa417f7b
EC		 1205 int err;
1206 struct mlx4_ib_iboe *iboe;
225c7b1f 1207
987c8f8f 1208 pr_info_once("%s", mlx4_ib_version);
68f3948d 1209
8e59d254 1210 if (mlx4_is_mfunc(dev)) {
987c8f8f 1211 pr_warn("IB not yet supported in SRIOV\n");
8e59d254
JM		 1212 return NULL;
1213 }
1214
fa417f7b 1215 mlx4_foreach_ib_transport_port(i, dev)
22e7ef9c
RD		 1216 num_ports++;
1217
1218 /* No point in registering a device with no ports... */
1219 if (num_ports == 0)
1220 return NULL;
1221
225c7b1f
RD		 1222 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1223 if (!ibdev) {
1224 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1225 return NULL;
1226 }
1227
fa417f7b
EC		 1228 iboe = &ibdev->iboe;
1229
225c7b1f
RD		 1230 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1231 goto err_dealloc;
1232
1233 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1234 goto err_pd;
1235
4979d18f
RD		 1236 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1237 PAGE_SIZE);
225c7b1f
RD		 1238 if (!ibdev->uar_map)
1239 goto err_uar;
26c6bc7b 1240 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
225c7b1f 1241
225c7b1f
RD		 1242 ibdev->dev = dev;
1243
1244 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1245 ibdev->ib_dev.owner = THIS_MODULE;
1246 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
95d04f07 1247 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
22e7ef9c 1248 ibdev->num_ports = num_ports;
7ff93f8b 1249 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
b8dd786f 1250 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
225c7b1f
RD		 1251 ibdev->ib_dev.dma_device = &dev->pdev->dev;
1252
1253 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
1254 ibdev->ib_dev.uverbs_cmd_mask =
1255 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1256 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1257 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1258 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1259 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1260 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1261 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1262 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1263 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
bbf8eed1 1264 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
225c7b1f
RD		 1265 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1266 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1267 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
6a775e2b 1268 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
225c7b1f
RD		 1269 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1270 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1271 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1272 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1273 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
65541cb7 1274 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
18abd5ea 1275 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
42849b26
SH		 1276 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1277 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
225c7b1f
RD		 1278
1279 ibdev->ib_dev.query_device = mlx4_ib_query_device;
1280 ibdev->ib_dev.query_port = mlx4_ib_query_port;
fa417f7b 1281 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
225c7b1f
RD		 1282 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
1283 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
1284 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
1285 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
1286 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
1287 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
1288 ibdev->ib_dev.mmap = mlx4_ib_mmap;
1289 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
1290 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
1291 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
1292 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
1293 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
1294 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
1295 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
65541cb7 1296 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
225c7b1f
RD		 1297 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
1298 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
1299 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
1300 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
6a775e2b 1301 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
225c7b1f
RD		 1302 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
1303 ibdev->ib_dev.post_send = mlx4_ib_post_send;
1304 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
1305 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
3fdcb97f 1306 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
bbf8eed1 1307 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
225c7b1f
RD		 1308 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
1309 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
1310 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
1311 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
1312 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
1313 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
95d04f07
RD		 1314 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1315 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1316 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
225c7b1f
RD		 1317 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
1318 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
1319 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
1320
8ad11fb6
JM		 1321 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
1322 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
1323 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
1324 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
1325
012a8ff5
SH		 1326 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
1327 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
1328 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
1329 ibdev->ib_dev.uverbs_cmd_mask |=
1330 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1331 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1332 }
1333
e605b743
SP		 1334 mlx4_ib_alloc_eqs(dev, ibdev);
1335
fa417f7b
EC		 1336 spin_lock_init(&iboe->lock);
1337
225c7b1f
RD		 1338 if (init_node_data(ibdev))
1339 goto err_map;
1340
cfcde11c
OG		 1341 for (i = 0; i < ibdev->num_ports; ++i) {
1342 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
1343 IB_LINK_LAYER_ETHERNET) {
1344 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
1345 if (err)
1346 ibdev->counters[i] = -1;
1347 } else
1348 ibdev->counters[i] = -1;
1349 }
1350
225c7b1f
RD		 1351 spin_lock_init(&ibdev->sm_lock);
1352 mutex_init(&ibdev->cap_mask_mutex);
1353
9a6edb60 1354 if (ib_register_device(&ibdev->ib_dev, NULL))
cfcde11c 1355 goto err_counter;
225c7b1f
RD		 1356
1357 if (mlx4_ib_mad_init(ibdev))
1358 goto err_reg;
1359
fc06573d
JM		 1360 if (mlx4_ib_init_sriov(ibdev))
1361 goto err_mad;
1362
fa417f7b
EC		 1363 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1364 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1365 err = register_netdevice_notifier(&iboe->nb);
1366 if (err)
fc06573d 1367 goto err_sriov;
fa417f7b
EC		 1368 }
1369
035b1032 1370 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
f4e91eb4 1371 if (device_create_file(&ibdev->ib_dev.dev,
035b1032 1372 mlx4_class_attributes[j]))
fa417f7b 1373 goto err_notif;
cd9281d8
JM		 1374 }
1375
3b4a8cd5
JM		 1376 ibdev->ib_active = true;
1377
225c7b1f
RD		 1378 return ibdev;
1379
fa417f7b
EC		 1380err_notif:
1381 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
987c8f8f 1382 pr_warn("failure unregistering notifier\n");
fa417f7b
EC		 1383 flush_workqueue(wq);
1384
fc06573d
JM		 1385err_sriov:
1386 mlx4_ib_close_sriov(ibdev);
1387
1388err_mad:
1389 mlx4_ib_mad_cleanup(ibdev);
1390
225c7b1f
RD		 1391err_reg:
1392 ib_unregister_device(&ibdev->ib_dev);
1393
cfcde11c
OG		 1394err_counter:
1395 for (; i; --i)
4af3ce0d
RD		 1396 if (ibdev->counters[i - 1] != -1)
1397 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
cfcde11c 1398
225c7b1f
RD		 1399err_map:
1400 iounmap(ibdev->uar_map);
1401
1402err_uar:
1403 mlx4_uar_free(dev, &ibdev->priv_uar);
1404
1405err_pd:
1406 mlx4_pd_free(dev, ibdev->priv_pdn);
1407
1408err_dealloc:
1409 ib_dealloc_device(&ibdev->ib_dev);
1410
1411 return NULL;
1412}
1413
1414static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1415{
1416 struct mlx4_ib_dev *ibdev = ibdev_ptr;
1417 int p;
1418
fc06573d 1419 mlx4_ib_close_sriov(ibdev);
a6a47771
YP		 1420 mlx4_ib_mad_cleanup(ibdev);
1421 ib_unregister_device(&ibdev->ib_dev);
fa417f7b
EC		 1422 if (ibdev->iboe.nb.notifier_call) {
1423 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
987c8f8f 1424 pr_warn("failure unregistering notifier\n");
fa417f7b
EC		 1425 ibdev->iboe.nb.notifier_call = NULL;
1426 }
1427 iounmap(ibdev->uar_map);
cfcde11c 1428 for (p = 0; p < ibdev->num_ports; ++p)
4af3ce0d
RD		 1429 if (ibdev->counters[p] != -1)
1430 mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
fa417f7b 1431 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
225c7b1f
RD		 1432 mlx4_CLOSE_PORT(dev, p);
1433
e605b743
SP		 1434 mlx4_ib_free_eqs(dev, ibdev);
1435
225c7b1f
RD		 1436 mlx4_uar_free(dev, &ibdev->priv_uar);
1437 mlx4_pd_free(dev, ibdev->priv_pdn);
1438 ib_dealloc_device(&ibdev->ib_dev);
1439}
1440
fc06573d
JM		 1441static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init)
1442{
1443 struct mlx4_ib_demux_work **dm = NULL;
1444 struct mlx4_dev *dev = ibdev->dev;
1445 int i;
1446 unsigned long flags;
1447
1448 if (!mlx4_is_master(dev))
1449 return;
1450
1451 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC);
1452 if (!dm) {
1453 pr_err("failed to allocate memory for tunneling qp update\n");
1454 goto out;
1455 }
1456
1457 for (i = 0; i < dev->caps.num_ports; i++) {
1458 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC);
1459 if (!dm[i]) {
1460 pr_err("failed to allocate memory for tunneling qp update work struct\n");
1461 for (i = 0; i < dev->caps.num_ports; i++) {
1462 if (dm[i])
1463 kfree(dm[i]);
1464 }
1465 goto out;
1466 }
1467 }
1468 /* initialize or tear down tunnel QPs for the slave */
1469 for (i = 0; i < dev->caps.num_ports; i++) {
1470 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work);
1471 dm[i]->port = i + 1;
1472 dm[i]->slave = slave;
1473 dm[i]->do_init = do_init;
1474 dm[i]->dev = ibdev;
1475 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags);
1476 if (!ibdev->sriov.is_going_down)
1477 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work);
1478 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags);
1479 }
1480out:
1481 if (dm)
1482 kfree(dm);
1483 return;
1484}
1485
225c7b1f 1486static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
00f5ce99 1487 enum mlx4_dev_event event, unsigned long param)
225c7b1f
RD		 1488{
1489 struct ib_event ibev;
7ff93f8b 1490 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
00f5ce99
JM		 1491 struct mlx4_eqe *eqe = NULL;
1492 struct ib_event_work *ew;
fc06573d 1493 int p = 0;
00f5ce99
JM		 1494
1495 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE)
1496 eqe = (struct mlx4_eqe *)param;
1497 else
fc06573d 1498 p = (int) param;
225c7b1f
RD		 1499
1500 switch (event) {
37608eea 1501 case MLX4_DEV_EVENT_PORT_UP:
fc06573d
JM		 1502 if (p > ibdev->num_ports)
1503 return;
37608eea 1504 ibev.event = IB_EVENT_PORT_ACTIVE;
225c7b1f
RD		 1505 break;
1506
37608eea 1507 case MLX4_DEV_EVENT_PORT_DOWN:
fc06573d
JM		 1508 if (p > ibdev->num_ports)
1509 return;
37608eea
RD		 1510 ibev.event = IB_EVENT_PORT_ERR;
1511 break;
1512
1513 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
3b4a8cd5 1514 ibdev->ib_active = false;
225c7b1f
RD		 1515 ibev.event = IB_EVENT_DEVICE_FATAL;
1516 break;
1517
00f5ce99
JM		 1518 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE:
1519 ew = kmalloc(sizeof *ew, GFP_ATOMIC);
1520 if (!ew) {
1521 pr_err("failed to allocate memory for events work\n");
1522 break;
1523 }
1524
1525 INIT_WORK(&ew->work, handle_port_mgmt_change_event);
1526 memcpy(&ew->ib_eqe, eqe, sizeof *eqe);
1527 ew->ib_dev = ibdev;
1528 handle_port_mgmt_change_event(&ew->work);
1529 return;
1530
fc06573d
JM		 1531 case MLX4_DEV_EVENT_SLAVE_INIT:
1532 /* here, p is the slave id */
1533 do_slave_init(ibdev, p, 1);
1534 return;
1535
1536 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
1537 /* here, p is the slave id */
1538 do_slave_init(ibdev, p, 0);
1539 return;
1540
225c7b1f
RD		 1541 default:
1542 return;
1543 }
1544
1545 ibev.device = ibdev_ptr;
fc06573d 1546 ibev.element.port_num = (u8) p;
225c7b1f
RD		 1547
1548 ib_dispatch_event(&ibev);
1549}
1550
1551static struct mlx4_interface mlx4_ib_interface = {
fa417f7b
EC		 1552 .add = mlx4_ib_add,
1553 .remove = mlx4_ib_remove,
1554 .event = mlx4_ib_event,
0345584e 1555 .protocol = MLX4_PROT_IB_IPV6
225c7b1f
RD		 1556};
1557
1558static int __init mlx4_ib_init(void)
1559{
fa417f7b
EC		 1560 int err;
1561
1562 wq = create_singlethread_workqueue("mlx4_ib");
1563 if (!wq)
1564 return -ENOMEM;
1565
1566 err = mlx4_register_interface(&mlx4_ib_interface);
1567 if (err) {
1568 destroy_workqueue(wq);
1569 return err;
1570 }
1571
1572 return 0;
225c7b1f
RD		 1573}
1574
1575static void __exit mlx4_ib_cleanup(void)
1576{
1577 mlx4_unregister_interface(&mlx4_ib_interface);
fa417f7b 1578 destroy_workqueue(wq);
225c7b1f
RD		 1579}
1580
1581module_init(mlx4_ib_init);
1582module_exit(mlx4_ib_cleanup);
Linux 6.x block layer and io_uring tree(s)