18836cdf1e1075e6a17895de44c67528a3389169
[pandora-kernel.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"
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 static const char mlx4_ib_version[] =
63         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
64         DRV_VERSION " (" DRV_RELDATE ")\n";
65
66 struct 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
73 static struct workqueue_struct *wq;
74
75 static 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
83 static union ib_gid zgid;
84
85 static 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                |
111                 IB_DEVICE_RC_RNR_NAK_GEN                |
112                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
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;
121         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
122                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
123         if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
124                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
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;
131         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
132                 props->device_cap_flags |= IB_DEVICE_XRC;
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;
143         props->max_qp_wr           = dev->dev->caps.max_wqes;
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;
154         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
155         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
156         props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
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;
160         props->masked_atomic_cap   = IB_ATOMIC_HCA;
161         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
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;
166         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
167
168 out:
169         kfree(in_mad);
170         kfree(out_mad);
171
172         return err;
173 }
174
175 static enum rdma_link_layer
176 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
177 {
178         struct mlx4_dev *dev = to_mdev(device)->dev;
179
180         return dev->caps.port_mask & (1 << (port_num - 1)) ?
181                 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
182 }
183
184 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
185                               struct ib_port_attr *props,
186                               struct ib_smp *in_mad,
187                               struct ib_smp *out_mad)
188 {
189         int ext_active_speed;
190         int err;
191
192         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
193         props->lmc              = out_mad->data[34] & 0x7;
194         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
195         props->sm_sl            = out_mad->data[36] & 0xf;
196         props->state            = out_mad->data[32] & 0xf;
197         props->phys_state       = out_mad->data[33] >> 4;
198         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
199         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
200         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
201         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
202         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
203         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
204         props->active_width     = out_mad->data[31] & 0xf;
205         props->active_speed     = out_mad->data[35] >> 4;
206         props->max_mtu          = out_mad->data[41] & 0xf;
207         props->active_mtu       = out_mad->data[36] >> 4;
208         props->subnet_timeout   = out_mad->data[51] & 0x1f;
209         props->max_vl_num       = out_mad->data[37] >> 4;
210         props->init_type_reply  = out_mad->data[41] >> 4;
211
212         /* Check if extended speeds (EDR/FDR/...) are supported */
213         if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
214                 ext_active_speed = out_mad->data[62] >> 4;
215
216                 switch (ext_active_speed) {
217                 case 1:
218                         props->active_speed = 16; /* FDR */
219                         break;
220                 case 2:
221                         props->active_speed = 32; /* EDR */
222                         break;
223                 }
224         }
225
226         /* If reported active speed is QDR, check if is FDR-10 */
227         if (props->active_speed == 4) {
228                 if (to_mdev(ibdev)->dev->caps.ext_port_cap[port] &
229                     MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
230                         init_query_mad(in_mad);
231                         in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
232                         in_mad->attr_mod = cpu_to_be32(port);
233
234                         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port,
235                                            NULL, NULL, in_mad, out_mad);
236                         if (err)
237                                 return err;
238
239                         /* Checking LinkSpeedActive for FDR-10 */
240                         if (out_mad->data[15] & 0x1)
241                                 props->active_speed = 8;
242                 }
243         }
244
245         return 0;
246 }
247
248 static u8 state_to_phys_state(enum ib_port_state state)
249 {
250         return state == IB_PORT_ACTIVE ? 5 : 3;
251 }
252
253 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
254                                struct ib_port_attr *props,
255                                struct ib_smp *out_mad)
256 {
257         struct mlx4_ib_iboe *iboe = &to_mdev(ibdev)->iboe;
258         struct net_device *ndev;
259         enum ib_mtu tmp;
260
261         props->active_width     = IB_WIDTH_1X;
262         props->active_speed     = 4;
263         props->port_cap_flags   = IB_PORT_CM_SUP;
264         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
265         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
266         props->pkey_tbl_len     = 1;
267         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
268         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
269         props->max_mtu          = IB_MTU_4096;
270         props->subnet_timeout   = 0;
271         props->max_vl_num       = out_mad->data[37] >> 4;
272         props->init_type_reply  = 0;
273         props->state            = IB_PORT_DOWN;
274         props->phys_state       = state_to_phys_state(props->state);
275         props->active_mtu       = IB_MTU_256;
276         spin_lock(&iboe->lock);
277         ndev = iboe->netdevs[port - 1];
278         if (!ndev)
279                 goto out;
280
281         tmp = iboe_get_mtu(ndev->mtu);
282         props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
283
284         props->state            = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
285                                         IB_PORT_ACTIVE : IB_PORT_DOWN;
286         props->phys_state       = state_to_phys_state(props->state);
287
288 out:
289         spin_unlock(&iboe->lock);
290         return 0;
291 }
292
293 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
294                               struct ib_port_attr *props)
295 {
296         struct ib_smp *in_mad  = NULL;
297         struct ib_smp *out_mad = NULL;
298         int err = -ENOMEM;
299
300         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
301         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
302         if (!in_mad || !out_mad)
303                 goto out;
304
305         memset(props, 0, sizeof *props);
306
307         init_query_mad(in_mad);
308         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
309         in_mad->attr_mod = cpu_to_be32(port);
310
311         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
312         if (err)
313                 goto out;
314
315         err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
316                 ib_link_query_port(ibdev, port, props, in_mad, out_mad) :
317                 eth_link_query_port(ibdev, port, props, out_mad);
318
319 out:
320         kfree(in_mad);
321         kfree(out_mad);
322
323         return err;
324 }
325
326 static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
327                                union ib_gid *gid)
328 {
329         struct ib_smp *in_mad  = NULL;
330         struct ib_smp *out_mad = NULL;
331         int err = -ENOMEM;
332
333         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
334         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
335         if (!in_mad || !out_mad)
336                 goto out;
337
338         init_query_mad(in_mad);
339         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
340         in_mad->attr_mod = cpu_to_be32(port);
341
342         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
343         if (err)
344                 goto out;
345
346         memcpy(gid->raw, out_mad->data + 8, 8);
347
348         init_query_mad(in_mad);
349         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
350         in_mad->attr_mod = cpu_to_be32(index / 8);
351
352         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
353         if (err)
354                 goto out;
355
356         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
357
358 out:
359         kfree(in_mad);
360         kfree(out_mad);
361         return err;
362 }
363
364 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
365                           union ib_gid *gid)
366 {
367         struct mlx4_ib_dev *dev = to_mdev(ibdev);
368
369         *gid = dev->iboe.gid_table[port - 1][index];
370
371         return 0;
372 }
373
374 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
375                              union ib_gid *gid)
376 {
377         if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
378                 return __mlx4_ib_query_gid(ibdev, port, index, gid);
379         else
380                 return iboe_query_gid(ibdev, port, index, gid);
381 }
382
383 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
384                               u16 *pkey)
385 {
386         struct ib_smp *in_mad  = NULL;
387         struct ib_smp *out_mad = NULL;
388         int err = -ENOMEM;
389
390         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
391         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
392         if (!in_mad || !out_mad)
393                 goto out;
394
395         init_query_mad(in_mad);
396         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
397         in_mad->attr_mod = cpu_to_be32(index / 32);
398
399         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
400         if (err)
401                 goto out;
402
403         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
404
405 out:
406         kfree(in_mad);
407         kfree(out_mad);
408         return err;
409 }
410
411 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
412                                  struct ib_device_modify *props)
413 {
414         struct mlx4_cmd_mailbox *mailbox;
415
416         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
417                 return -EOPNOTSUPP;
418
419         if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
420                 return 0;
421
422         spin_lock(&to_mdev(ibdev)->sm_lock);
423         memcpy(ibdev->node_desc, props->node_desc, 64);
424         spin_unlock(&to_mdev(ibdev)->sm_lock);
425
426         /*
427          * If possible, pass node desc to FW, so it can generate
428          * a 144 trap.  If cmd fails, just ignore.
429          */
430         mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
431         if (IS_ERR(mailbox))
432                 return 0;
433
434         memset(mailbox->buf, 0, 256);
435         memcpy(mailbox->buf, props->node_desc, 64);
436         mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
437                  MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A);
438
439         mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
440
441         return 0;
442 }
443
444 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
445                          u32 cap_mask)
446 {
447         struct mlx4_cmd_mailbox *mailbox;
448         int err;
449         u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
450
451         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
452         if (IS_ERR(mailbox))
453                 return PTR_ERR(mailbox);
454
455         memset(mailbox->buf, 0, 256);
456
457         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
458                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
459                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
460         } else {
461                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
462                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
463         }
464
465         err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
466                        MLX4_CMD_TIME_CLASS_B);
467
468         mlx4_free_cmd_mailbox(dev->dev, mailbox);
469         return err;
470 }
471
472 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
473                                struct ib_port_modify *props)
474 {
475         struct ib_port_attr attr;
476         u32 cap_mask;
477         int err;
478
479         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
480
481         err = mlx4_ib_query_port(ibdev, port, &attr);
482         if (err)
483                 goto out;
484
485         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
486                 ~props->clr_port_cap_mask;
487
488         err = mlx4_SET_PORT(to_mdev(ibdev), port,
489                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
490                             cap_mask);
491
492 out:
493         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
494         return err;
495 }
496
497 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
498                                                   struct ib_udata *udata)
499 {
500         struct mlx4_ib_dev *dev = to_mdev(ibdev);
501         struct mlx4_ib_ucontext *context;
502         struct mlx4_ib_alloc_ucontext_resp resp;
503         int err;
504
505         if (!dev->ib_active)
506                 return ERR_PTR(-EAGAIN);
507
508         resp.qp_tab_size      = dev->dev->caps.num_qps;
509         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
510         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
511
512         context = kmalloc(sizeof *context, GFP_KERNEL);
513         if (!context)
514                 return ERR_PTR(-ENOMEM);
515
516         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
517         if (err) {
518                 kfree(context);
519                 return ERR_PTR(err);
520         }
521
522         INIT_LIST_HEAD(&context->db_page_list);
523         mutex_init(&context->db_page_mutex);
524
525         err = ib_copy_to_udata(udata, &resp, sizeof resp);
526         if (err) {
527                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
528                 kfree(context);
529                 return ERR_PTR(-EFAULT);
530         }
531
532         return &context->ibucontext;
533 }
534
535 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
536 {
537         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
538
539         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
540         kfree(context);
541
542         return 0;
543 }
544
545 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
546 {
547         struct mlx4_ib_dev *dev = to_mdev(context->device);
548
549         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
550                 return -EINVAL;
551
552         if (vma->vm_pgoff == 0) {
553                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
554
555                 if (io_remap_pfn_range(vma, vma->vm_start,
556                                        to_mucontext(context)->uar.pfn,
557                                        PAGE_SIZE, vma->vm_page_prot))
558                         return -EAGAIN;
559         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
560                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
561
562                 if (io_remap_pfn_range(vma, vma->vm_start,
563                                        to_mucontext(context)->uar.pfn +
564                                        dev->dev->caps.num_uars,
565                                        PAGE_SIZE, vma->vm_page_prot))
566                         return -EAGAIN;
567         } else
568                 return -EINVAL;
569
570         return 0;
571 }
572
573 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
574                                       struct ib_ucontext *context,
575                                       struct ib_udata *udata)
576 {
577         struct mlx4_ib_pd *pd;
578         int err;
579
580         pd = kmalloc(sizeof *pd, GFP_KERNEL);
581         if (!pd)
582                 return ERR_PTR(-ENOMEM);
583
584         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
585         if (err) {
586                 kfree(pd);
587                 return ERR_PTR(err);
588         }
589
590         if (context)
591                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
592                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
593                         kfree(pd);
594                         return ERR_PTR(-EFAULT);
595                 }
596
597         return &pd->ibpd;
598 }
599
600 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
601 {
602         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
603         kfree(pd);
604
605         return 0;
606 }
607
608 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
609                                           struct ib_ucontext *context,
610                                           struct ib_udata *udata)
611 {
612         struct mlx4_ib_xrcd *xrcd;
613         int err;
614
615         if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
616                 return ERR_PTR(-ENOSYS);
617
618         xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
619         if (!xrcd)
620                 return ERR_PTR(-ENOMEM);
621
622         err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
623         if (err)
624                 goto err1;
625
626         xrcd->pd = ib_alloc_pd(ibdev);
627         if (IS_ERR(xrcd->pd)) {
628                 err = PTR_ERR(xrcd->pd);
629                 goto err2;
630         }
631
632         xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
633         if (IS_ERR(xrcd->cq)) {
634                 err = PTR_ERR(xrcd->cq);
635                 goto err3;
636         }
637
638         return &xrcd->ibxrcd;
639
640 err3:
641         ib_dealloc_pd(xrcd->pd);
642 err2:
643         mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
644 err1:
645         kfree(xrcd);
646         return ERR_PTR(err);
647 }
648
649 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
650 {
651         ib_destroy_cq(to_mxrcd(xrcd)->cq);
652         ib_dealloc_pd(to_mxrcd(xrcd)->pd);
653         mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
654         kfree(xrcd);
655
656         return 0;
657 }
658
659 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
660 {
661         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
662         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
663         struct mlx4_ib_gid_entry *ge;
664
665         ge = kzalloc(sizeof *ge, GFP_KERNEL);
666         if (!ge)
667                 return -ENOMEM;
668
669         ge->gid = *gid;
670         if (mlx4_ib_add_mc(mdev, mqp, gid)) {
671                 ge->port = mqp->port;
672                 ge->added = 1;
673         }
674
675         mutex_lock(&mqp->mutex);
676         list_add_tail(&ge->list, &mqp->gid_list);
677         mutex_unlock(&mqp->mutex);
678
679         return 0;
680 }
681
682 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
683                    union ib_gid *gid)
684 {
685         u8 mac[6];
686         struct net_device *ndev;
687         int ret = 0;
688
689         if (!mqp->port)
690                 return 0;
691
692         spin_lock(&mdev->iboe.lock);
693         ndev = mdev->iboe.netdevs[mqp->port - 1];
694         if (ndev)
695                 dev_hold(ndev);
696         spin_unlock(&mdev->iboe.lock);
697
698         if (ndev) {
699                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
700                 rtnl_lock();
701                 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
702                 ret = 1;
703                 rtnl_unlock();
704                 dev_put(ndev);
705         }
706
707         return ret;
708 }
709
710 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
711 {
712         int err;
713         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
714         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
715
716         err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
717                                     !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
718                                     MLX4_PROT_IB_IPV6);
719         if (err)
720                 return err;
721
722         err = add_gid_entry(ibqp, gid);
723         if (err)
724                 goto err_add;
725
726         return 0;
727
728 err_add:
729         mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
730         return err;
731 }
732
733 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
734 {
735         struct mlx4_ib_gid_entry *ge;
736         struct mlx4_ib_gid_entry *tmp;
737         struct mlx4_ib_gid_entry *ret = NULL;
738
739         list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
740                 if (!memcmp(raw, ge->gid.raw, 16)) {
741                         ret = ge;
742                         break;
743                 }
744         }
745
746         return ret;
747 }
748
749 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
750 {
751         int err;
752         struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
753         struct mlx4_ib_qp *mqp = to_mqp(ibqp);
754         u8 mac[6];
755         struct net_device *ndev;
756         struct mlx4_ib_gid_entry *ge;
757
758         err = mlx4_multicast_detach(mdev->dev,
759                                     &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
760         if (err)
761                 return err;
762
763         mutex_lock(&mqp->mutex);
764         ge = find_gid_entry(mqp, gid->raw);
765         if (ge) {
766                 spin_lock(&mdev->iboe.lock);
767                 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
768                 if (ndev)
769                         dev_hold(ndev);
770                 spin_unlock(&mdev->iboe.lock);
771                 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
772                 if (ndev) {
773                         rtnl_lock();
774                         dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
775                         rtnl_unlock();
776                         dev_put(ndev);
777                 }
778                 list_del(&ge->list);
779                 kfree(ge);
780         } else
781                 printk(KERN_WARNING "could not find mgid entry\n");
782
783         mutex_unlock(&mqp->mutex);
784
785         return 0;
786 }
787
788 static int init_node_data(struct mlx4_ib_dev *dev)
789 {
790         struct ib_smp *in_mad  = NULL;
791         struct ib_smp *out_mad = NULL;
792         int err = -ENOMEM;
793
794         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
795         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
796         if (!in_mad || !out_mad)
797                 goto out;
798
799         init_query_mad(in_mad);
800         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
801
802         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
803         if (err)
804                 goto out;
805
806         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
807
808         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
809
810         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
811         if (err)
812                 goto out;
813
814         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
815
816 out:
817         kfree(in_mad);
818         kfree(out_mad);
819         return err;
820 }
821
822 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
823                         char *buf)
824 {
825         struct mlx4_ib_dev *dev =
826                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
827         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
828 }
829
830 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
831                            char *buf)
832 {
833         struct mlx4_ib_dev *dev =
834                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
835         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
836                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
837                        (int) dev->dev->caps.fw_ver & 0xffff);
838 }
839
840 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
841                         char *buf)
842 {
843         struct mlx4_ib_dev *dev =
844                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
845         return sprintf(buf, "%x\n", dev->dev->rev_id);
846 }
847
848 static ssize_t show_board(struct device *device, struct device_attribute *attr,
849                           char *buf)
850 {
851         struct mlx4_ib_dev *dev =
852                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
853         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
854                        dev->dev->board_id);
855 }
856
857 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
858 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
859 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
860 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
861
862 static struct device_attribute *mlx4_class_attributes[] = {
863         &dev_attr_hw_rev,
864         &dev_attr_fw_ver,
865         &dev_attr_hca_type,
866         &dev_attr_board_id
867 };
868
869 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
870 {
871         memcpy(eui, dev->dev_addr, 3);
872         memcpy(eui + 5, dev->dev_addr + 3, 3);
873         if (vlan_id < 0x1000) {
874                 eui[3] = vlan_id >> 8;
875                 eui[4] = vlan_id & 0xff;
876         } else {
877                 eui[3] = 0xff;
878                 eui[4] = 0xfe;
879         }
880         eui[0] ^= 2;
881 }
882
883 static void update_gids_task(struct work_struct *work)
884 {
885         struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
886         struct mlx4_cmd_mailbox *mailbox;
887         union ib_gid *gids;
888         int err;
889         struct mlx4_dev *dev = gw->dev->dev;
890         struct ib_event event;
891
892         mailbox = mlx4_alloc_cmd_mailbox(dev);
893         if (IS_ERR(mailbox)) {
894                 printk(KERN_WARNING "update gid table failed %ld\n", PTR_ERR(mailbox));
895                 return;
896         }
897
898         gids = mailbox->buf;
899         memcpy(gids, gw->gids, sizeof gw->gids);
900
901         err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
902                        1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B);
903         if (err)
904                 printk(KERN_WARNING "set port command failed\n");
905         else {
906                 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
907                 event.device = &gw->dev->ib_dev;
908                 event.element.port_num = gw->port;
909                 event.event    = IB_EVENT_GID_CHANGE;
910                 ib_dispatch_event(&event);
911         }
912
913         mlx4_free_cmd_mailbox(dev, mailbox);
914         kfree(gw);
915 }
916
917 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
918 {
919         struct net_device *ndev = dev->iboe.netdevs[port - 1];
920         struct update_gid_work *work;
921         struct net_device *tmp;
922         int i;
923         u8 *hits;
924         int ret;
925         union ib_gid gid;
926         int free;
927         int found;
928         int need_update = 0;
929         u16 vid;
930
931         work = kzalloc(sizeof *work, GFP_ATOMIC);
932         if (!work)
933                 return -ENOMEM;
934
935         hits = kzalloc(128, GFP_ATOMIC);
936         if (!hits) {
937                 ret = -ENOMEM;
938                 goto out;
939         }
940
941         rcu_read_lock();
942         for_each_netdev_rcu(&init_net, tmp) {
943                 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
944                         gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
945                         vid = rdma_vlan_dev_vlan_id(tmp);
946                         mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
947                         found = 0;
948                         free = -1;
949                         for (i = 0; i < 128; ++i) {
950                                 if (free < 0 &&
951                                     !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
952                                         free = i;
953                                 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
954                                         hits[i] = 1;
955                                         found = 1;
956                                         break;
957                                 }
958                         }
959
960                         if (!found) {
961                                 if (tmp == ndev &&
962                                     (memcmp(&dev->iboe.gid_table[port - 1][0],
963                                             &gid, sizeof gid) ||
964                                      !memcmp(&dev->iboe.gid_table[port - 1][0],
965                                              &zgid, sizeof gid))) {
966                                         dev->iboe.gid_table[port - 1][0] = gid;
967                                         ++need_update;
968                                         hits[0] = 1;
969                                 } else if (free >= 0) {
970                                         dev->iboe.gid_table[port - 1][free] = gid;
971                                         hits[free] = 1;
972                                         ++need_update;
973                                 }
974                         }
975                 }
976         }
977         rcu_read_unlock();
978
979         for (i = 0; i < 128; ++i)
980                 if (!hits[i]) {
981                         if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
982                                 ++need_update;
983                         dev->iboe.gid_table[port - 1][i] = zgid;
984                 }
985
986         if (need_update) {
987                 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
988                 INIT_WORK(&work->work, update_gids_task);
989                 work->port = port;
990                 work->dev = dev;
991                 queue_work(wq, &work->work);
992         } else
993                 kfree(work);
994
995         kfree(hits);
996         return 0;
997
998 out:
999         kfree(work);
1000         return ret;
1001 }
1002
1003 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1004 {
1005         switch (event) {
1006         case NETDEV_UP:
1007         case NETDEV_CHANGEADDR:
1008                 update_ipv6_gids(dev, port, 0);
1009                 break;
1010
1011         case NETDEV_DOWN:
1012                 update_ipv6_gids(dev, port, 1);
1013                 dev->iboe.netdevs[port - 1] = NULL;
1014         }
1015 }
1016
1017 static void netdev_added(struct mlx4_ib_dev *dev, int port)
1018 {
1019         update_ipv6_gids(dev, port, 0);
1020 }
1021
1022 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1023 {
1024         update_ipv6_gids(dev, port, 1);
1025 }
1026
1027 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1028                                 void *ptr)
1029 {
1030         struct net_device *dev = ptr;
1031         struct mlx4_ib_dev *ibdev;
1032         struct net_device *oldnd;
1033         struct mlx4_ib_iboe *iboe;
1034         int port;
1035
1036         if (!net_eq(dev_net(dev), &init_net))
1037                 return NOTIFY_DONE;
1038
1039         ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1040         iboe = &ibdev->iboe;
1041
1042         spin_lock(&iboe->lock);
1043         mlx4_foreach_ib_transport_port(port, ibdev->dev) {
1044                 oldnd = iboe->netdevs[port - 1];
1045                 iboe->netdevs[port - 1] =
1046                         mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1047                 if (oldnd != iboe->netdevs[port - 1]) {
1048                         if (iboe->netdevs[port - 1])
1049                                 netdev_added(ibdev, port);
1050                         else
1051                                 netdev_removed(ibdev, port);
1052                 }
1053         }
1054
1055         if (dev == iboe->netdevs[0] ||
1056             (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
1057                 handle_en_event(ibdev, 1, event);
1058         else if (dev == iboe->netdevs[1]
1059                  || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
1060                 handle_en_event(ibdev, 2, event);
1061
1062         spin_unlock(&iboe->lock);
1063
1064         return NOTIFY_DONE;
1065 }
1066
1067 static void *mlx4_ib_add(struct mlx4_dev *dev)
1068 {
1069         struct mlx4_ib_dev *ibdev;
1070         int num_ports = 0;
1071         int i;
1072         int err;
1073         struct mlx4_ib_iboe *iboe;
1074
1075         printk_once(KERN_INFO "%s", mlx4_ib_version);
1076
1077         mlx4_foreach_ib_transport_port(i, dev)
1078                 num_ports++;
1079
1080         /* No point in registering a device with no ports... */
1081         if (num_ports == 0)
1082                 return NULL;
1083
1084         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1085         if (!ibdev) {
1086                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1087                 return NULL;
1088         }
1089
1090         iboe = &ibdev->iboe;
1091
1092         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1093                 goto err_dealloc;
1094
1095         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1096                 goto err_pd;
1097
1098         ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1099                                  PAGE_SIZE);
1100         if (!ibdev->uar_map)
1101                 goto err_uar;
1102         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1103
1104         ibdev->dev = dev;
1105
1106         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
1107         ibdev->ib_dev.owner             = THIS_MODULE;
1108         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
1109         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
1110         ibdev->num_ports                = num_ports;
1111         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1112         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
1113         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
1114
1115         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
1116         ibdev->ib_dev.uverbs_cmd_mask   =
1117                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
1118                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
1119                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
1120                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
1121                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
1122                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
1123                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
1124                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1125                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
1126                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
1127                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
1128                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
1129                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
1130                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
1131                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
1132                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
1133                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
1134                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
1135                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
1136                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
1137                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)         |
1138                 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)         |
1139                 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1140
1141         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
1142         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
1143         ibdev->ib_dev.get_link_layer    = mlx4_ib_port_link_layer;
1144         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
1145         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
1146         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
1147         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
1148         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
1149         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
1150         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
1151         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
1152         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
1153         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
1154         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
1155         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
1156         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
1157         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
1158         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
1159         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
1160         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
1161         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
1162         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
1163         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
1164         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
1165         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
1166         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
1167         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
1168         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
1169         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
1170         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
1171         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
1172         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
1173         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
1174         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
1175         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
1176         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
1177         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
1178         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
1179         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
1180         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
1181         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
1182
1183         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
1184         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
1185         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
1186         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
1187
1188         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
1189                 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
1190                 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
1191                 ibdev->ib_dev.uverbs_cmd_mask |=
1192                         (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1193                         (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1194         }
1195
1196         spin_lock_init(&iboe->lock);
1197
1198         if (init_node_data(ibdev))
1199                 goto err_map;
1200
1201         for (i = 0; i < ibdev->num_ports; ++i) {
1202                 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
1203                                                 IB_LINK_LAYER_ETHERNET) {
1204                         err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
1205                         if (err)
1206                                 ibdev->counters[i] = -1;
1207                 } else
1208                                 ibdev->counters[i] = -1;
1209         }
1210
1211         spin_lock_init(&ibdev->sm_lock);
1212         mutex_init(&ibdev->cap_mask_mutex);
1213
1214         if (ib_register_device(&ibdev->ib_dev, NULL))
1215                 goto err_counter;
1216
1217         if (mlx4_ib_mad_init(ibdev))
1218                 goto err_reg;
1219
1220         if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
1221                 iboe->nb.notifier_call = mlx4_ib_netdev_event;
1222                 err = register_netdevice_notifier(&iboe->nb);
1223                 if (err)
1224                         goto err_reg;
1225         }
1226
1227         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
1228                 if (device_create_file(&ibdev->ib_dev.dev,
1229                                        mlx4_class_attributes[i]))
1230                         goto err_notif;
1231         }
1232
1233         ibdev->ib_active = true;
1234
1235         return ibdev;
1236
1237 err_notif:
1238         if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1239                 printk(KERN_WARNING "failure unregistering notifier\n");
1240         flush_workqueue(wq);
1241
1242 err_reg:
1243         ib_unregister_device(&ibdev->ib_dev);
1244
1245 err_counter:
1246         for (; i; --i)
1247                 if (ibdev->counters[i - 1] != -1)
1248                         mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1249
1250 err_map:
1251         iounmap(ibdev->uar_map);
1252
1253 err_uar:
1254         mlx4_uar_free(dev, &ibdev->priv_uar);
1255
1256 err_pd:
1257         mlx4_pd_free(dev, ibdev->priv_pdn);
1258
1259 err_dealloc:
1260         ib_dealloc_device(&ibdev->ib_dev);
1261
1262         return NULL;
1263 }
1264
1265 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1266 {
1267         struct mlx4_ib_dev *ibdev = ibdev_ptr;
1268         int p;
1269
1270         mlx4_ib_mad_cleanup(ibdev);
1271         ib_unregister_device(&ibdev->ib_dev);
1272         if (ibdev->iboe.nb.notifier_call) {
1273                 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1274                         printk(KERN_WARNING "failure unregistering notifier\n");
1275                 ibdev->iboe.nb.notifier_call = NULL;
1276         }
1277         iounmap(ibdev->uar_map);
1278         for (p = 0; p < ibdev->num_ports; ++p)
1279                 if (ibdev->counters[p] != -1)
1280                         mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
1281         mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1282                 mlx4_CLOSE_PORT(dev, p);
1283
1284         mlx4_uar_free(dev, &ibdev->priv_uar);
1285         mlx4_pd_free(dev, ibdev->priv_pdn);
1286         ib_dealloc_device(&ibdev->ib_dev);
1287 }
1288
1289 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1290                           enum mlx4_dev_event event, int port)
1291 {
1292         struct ib_event ibev;
1293         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1294
1295         if (port > ibdev->num_ports)
1296                 return;
1297
1298         switch (event) {
1299         case MLX4_DEV_EVENT_PORT_UP:
1300                 ibev.event = IB_EVENT_PORT_ACTIVE;
1301                 break;
1302
1303         case MLX4_DEV_EVENT_PORT_DOWN:
1304                 ibev.event = IB_EVENT_PORT_ERR;
1305                 break;
1306
1307         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1308                 ibdev->ib_active = false;
1309                 ibev.event = IB_EVENT_DEVICE_FATAL;
1310                 break;
1311
1312         default:
1313                 return;
1314         }
1315
1316         ibev.device           = ibdev_ptr;
1317         ibev.element.port_num = port;
1318
1319         ib_dispatch_event(&ibev);
1320 }
1321
1322 static struct mlx4_interface mlx4_ib_interface = {
1323         .add            = mlx4_ib_add,
1324         .remove         = mlx4_ib_remove,
1325         .event          = mlx4_ib_event,
1326         .protocol       = MLX4_PROT_IB_IPV6
1327 };
1328
1329 static int __init mlx4_ib_init(void)
1330 {
1331         int err;
1332
1333         wq = create_singlethread_workqueue("mlx4_ib");
1334         if (!wq)
1335                 return -ENOMEM;
1336
1337         err = mlx4_register_interface(&mlx4_ib_interface);
1338         if (err) {
1339                 destroy_workqueue(wq);
1340                 return err;
1341         }
1342
1343         return 0;
1344 }
1345
1346 static void __exit mlx4_ib_cleanup(void)
1347 {
1348         mlx4_unregister_interface(&mlx4_ib_interface);
1349         destroy_workqueue(wq);
1350 }
1351
1352 module_init(mlx4_ib_init);
1353 module_exit(mlx4_ib_cleanup);