IB/mlx4: Unregister IB device prior to CLOSE PORT command
[linux-3.10.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/errno.h>
37
38 #include <rdma/ib_smi.h>
39 #include <rdma/ib_user_verbs.h>
40
41 #include <linux/mlx4/driver.h>
42 #include <linux/mlx4/cmd.h>
43
44 #include "mlx4_ib.h"
45 #include "user.h"
46
47 #define DRV_NAME        "mlx4_ib"
48 #define DRV_VERSION     "1.0"
49 #define DRV_RELDATE     "April 4, 2008"
50
51 MODULE_AUTHOR("Roland Dreier");
52 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
53 MODULE_LICENSE("Dual BSD/GPL");
54 MODULE_VERSION(DRV_VERSION);
55
56 static const char mlx4_ib_version[] =
57         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
58         DRV_VERSION " (" DRV_RELDATE ")\n";
59
60 static void init_query_mad(struct ib_smp *mad)
61 {
62         mad->base_version  = 1;
63         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
64         mad->class_version = 1;
65         mad->method        = IB_MGMT_METHOD_GET;
66 }
67
68 static int mlx4_ib_query_device(struct ib_device *ibdev,
69                                 struct ib_device_attr *props)
70 {
71         struct mlx4_ib_dev *dev = to_mdev(ibdev);
72         struct ib_smp *in_mad  = NULL;
73         struct ib_smp *out_mad = NULL;
74         int err = -ENOMEM;
75
76         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
77         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
78         if (!in_mad || !out_mad)
79                 goto out;
80
81         init_query_mad(in_mad);
82         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
83
84         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
85         if (err)
86                 goto out;
87
88         memset(props, 0, sizeof *props);
89
90         props->fw_ver = dev->dev->caps.fw_ver;
91         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
92                 IB_DEVICE_PORT_ACTIVE_EVENT             |
93                 IB_DEVICE_SYS_IMAGE_GUID                |
94                 IB_DEVICE_RC_RNR_NAK_GEN                |
95                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
96         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
97                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
98         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
99                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
100         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
101                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
102         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
103                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
104         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
105                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
106         if (dev->dev->caps.max_gso_sz)
107                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
108         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
109                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
110         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
111             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
112             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
113                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
114
115         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
116                 0xffffff;
117         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
118         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
119         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
120
121         props->max_mr_size         = ~0ull;
122         props->page_size_cap       = dev->dev->caps.page_size_cap;
123         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
124         props->max_qp_wr           = dev->dev->caps.max_wqes;
125         props->max_sge             = min(dev->dev->caps.max_sq_sg,
126                                          dev->dev->caps.max_rq_sg);
127         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
128         props->max_cqe             = dev->dev->caps.max_cqes;
129         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
130         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
131         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
132         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
133         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
134         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
135         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
136         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
137         props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64);
138         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
139         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
140                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
141         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
142         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
143         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
144         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
145                                            props->max_mcast_grp;
146         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
147
148 out:
149         kfree(in_mad);
150         kfree(out_mad);
151
152         return err;
153 }
154
155 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
156                               struct ib_port_attr *props)
157 {
158         struct ib_smp *in_mad  = NULL;
159         struct ib_smp *out_mad = NULL;
160         int err = -ENOMEM;
161
162         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
163         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
164         if (!in_mad || !out_mad)
165                 goto out;
166
167         memset(props, 0, sizeof *props);
168
169         init_query_mad(in_mad);
170         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
171         in_mad->attr_mod = cpu_to_be32(port);
172
173         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
174         if (err)
175                 goto out;
176
177         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
178         props->lmc              = out_mad->data[34] & 0x7;
179         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
180         props->sm_sl            = out_mad->data[36] & 0xf;
181         props->state            = out_mad->data[32] & 0xf;
182         props->phys_state       = out_mad->data[33] >> 4;
183         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
184         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
185         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
186         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
187         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
188         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
189         props->active_width     = out_mad->data[31] & 0xf;
190         props->active_speed     = out_mad->data[35] >> 4;
191         props->max_mtu          = out_mad->data[41] & 0xf;
192         props->active_mtu       = out_mad->data[36] >> 4;
193         props->subnet_timeout   = out_mad->data[51] & 0x1f;
194         props->max_vl_num       = out_mad->data[37] >> 4;
195         props->init_type_reply  = out_mad->data[41] >> 4;
196
197 out:
198         kfree(in_mad);
199         kfree(out_mad);
200
201         return err;
202 }
203
204 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
205                              union ib_gid *gid)
206 {
207         struct ib_smp *in_mad  = NULL;
208         struct ib_smp *out_mad = NULL;
209         int err = -ENOMEM;
210
211         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
212         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
213         if (!in_mad || !out_mad)
214                 goto out;
215
216         init_query_mad(in_mad);
217         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
218         in_mad->attr_mod = cpu_to_be32(port);
219
220         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
221         if (err)
222                 goto out;
223
224         memcpy(gid->raw, out_mad->data + 8, 8);
225
226         init_query_mad(in_mad);
227         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
228         in_mad->attr_mod = cpu_to_be32(index / 8);
229
230         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
231         if (err)
232                 goto out;
233
234         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
235
236 out:
237         kfree(in_mad);
238         kfree(out_mad);
239         return err;
240 }
241
242 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
243                               u16 *pkey)
244 {
245         struct ib_smp *in_mad  = NULL;
246         struct ib_smp *out_mad = NULL;
247         int err = -ENOMEM;
248
249         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
250         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
251         if (!in_mad || !out_mad)
252                 goto out;
253
254         init_query_mad(in_mad);
255         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
256         in_mad->attr_mod = cpu_to_be32(index / 32);
257
258         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
259         if (err)
260                 goto out;
261
262         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
263
264 out:
265         kfree(in_mad);
266         kfree(out_mad);
267         return err;
268 }
269
270 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
271                                  struct ib_device_modify *props)
272 {
273         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
274                 return -EOPNOTSUPP;
275
276         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
277                 spin_lock(&to_mdev(ibdev)->sm_lock);
278                 memcpy(ibdev->node_desc, props->node_desc, 64);
279                 spin_unlock(&to_mdev(ibdev)->sm_lock);
280         }
281
282         return 0;
283 }
284
285 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
286                          u32 cap_mask)
287 {
288         struct mlx4_cmd_mailbox *mailbox;
289         int err;
290
291         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
292         if (IS_ERR(mailbox))
293                 return PTR_ERR(mailbox);
294
295         memset(mailbox->buf, 0, 256);
296
297         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
298                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
299                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
300         } else {
301                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
302                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
303         }
304
305         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
306                        MLX4_CMD_TIME_CLASS_B);
307
308         mlx4_free_cmd_mailbox(dev->dev, mailbox);
309         return err;
310 }
311
312 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
313                                struct ib_port_modify *props)
314 {
315         struct ib_port_attr attr;
316         u32 cap_mask;
317         int err;
318
319         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
320
321         err = mlx4_ib_query_port(ibdev, port, &attr);
322         if (err)
323                 goto out;
324
325         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
326                 ~props->clr_port_cap_mask;
327
328         err = mlx4_SET_PORT(to_mdev(ibdev), port,
329                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
330                             cap_mask);
331
332 out:
333         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
334         return err;
335 }
336
337 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
338                                                   struct ib_udata *udata)
339 {
340         struct mlx4_ib_dev *dev = to_mdev(ibdev);
341         struct mlx4_ib_ucontext *context;
342         struct mlx4_ib_alloc_ucontext_resp resp;
343         int err;
344
345         resp.qp_tab_size      = dev->dev->caps.num_qps;
346         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
347         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
348
349         context = kmalloc(sizeof *context, GFP_KERNEL);
350         if (!context)
351                 return ERR_PTR(-ENOMEM);
352
353         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
354         if (err) {
355                 kfree(context);
356                 return ERR_PTR(err);
357         }
358
359         INIT_LIST_HEAD(&context->db_page_list);
360         mutex_init(&context->db_page_mutex);
361
362         err = ib_copy_to_udata(udata, &resp, sizeof resp);
363         if (err) {
364                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
365                 kfree(context);
366                 return ERR_PTR(-EFAULT);
367         }
368
369         return &context->ibucontext;
370 }
371
372 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
373 {
374         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
375
376         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
377         kfree(context);
378
379         return 0;
380 }
381
382 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
383 {
384         struct mlx4_ib_dev *dev = to_mdev(context->device);
385
386         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
387                 return -EINVAL;
388
389         if (vma->vm_pgoff == 0) {
390                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
391
392                 if (io_remap_pfn_range(vma, vma->vm_start,
393                                        to_mucontext(context)->uar.pfn,
394                                        PAGE_SIZE, vma->vm_page_prot))
395                         return -EAGAIN;
396         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
397                 /* FIXME want pgprot_writecombine() for BlueFlame pages */
398                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
399
400                 if (io_remap_pfn_range(vma, vma->vm_start,
401                                        to_mucontext(context)->uar.pfn +
402                                        dev->dev->caps.num_uars,
403                                        PAGE_SIZE, vma->vm_page_prot))
404                         return -EAGAIN;
405         } else
406                 return -EINVAL;
407
408         return 0;
409 }
410
411 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
412                                       struct ib_ucontext *context,
413                                       struct ib_udata *udata)
414 {
415         struct mlx4_ib_pd *pd;
416         int err;
417
418         pd = kmalloc(sizeof *pd, GFP_KERNEL);
419         if (!pd)
420                 return ERR_PTR(-ENOMEM);
421
422         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
423         if (err) {
424                 kfree(pd);
425                 return ERR_PTR(err);
426         }
427
428         if (context)
429                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
430                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
431                         kfree(pd);
432                         return ERR_PTR(-EFAULT);
433                 }
434
435         return &pd->ibpd;
436 }
437
438 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
439 {
440         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
441         kfree(pd);
442
443         return 0;
444 }
445
446 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
447 {
448         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
449                                      &to_mqp(ibqp)->mqp, gid->raw,
450                                      !!(to_mqp(ibqp)->flags &
451                                         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
452 }
453
454 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
455 {
456         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
457                                      &to_mqp(ibqp)->mqp, gid->raw);
458 }
459
460 static int init_node_data(struct mlx4_ib_dev *dev)
461 {
462         struct ib_smp *in_mad  = NULL;
463         struct ib_smp *out_mad = NULL;
464         int err = -ENOMEM;
465
466         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
467         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
468         if (!in_mad || !out_mad)
469                 goto out;
470
471         init_query_mad(in_mad);
472         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
473
474         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
475         if (err)
476                 goto out;
477
478         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
479
480         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
481
482         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
483         if (err)
484                 goto out;
485
486         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
487         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
488
489 out:
490         kfree(in_mad);
491         kfree(out_mad);
492         return err;
493 }
494
495 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
496                         char *buf)
497 {
498         struct mlx4_ib_dev *dev =
499                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
500         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
501 }
502
503 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
504                            char *buf)
505 {
506         struct mlx4_ib_dev *dev =
507                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
508         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
509                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
510                        (int) dev->dev->caps.fw_ver & 0xffff);
511 }
512
513 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
514                         char *buf)
515 {
516         struct mlx4_ib_dev *dev =
517                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
518         return sprintf(buf, "%x\n", dev->dev->rev_id);
519 }
520
521 static ssize_t show_board(struct device *device, struct device_attribute *attr,
522                           char *buf)
523 {
524         struct mlx4_ib_dev *dev =
525                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
526         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
527                        dev->dev->board_id);
528 }
529
530 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
531 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
532 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
533 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
534
535 static struct device_attribute *mlx4_class_attributes[] = {
536         &dev_attr_hw_rev,
537         &dev_attr_fw_ver,
538         &dev_attr_hca_type,
539         &dev_attr_board_id
540 };
541
542 static void *mlx4_ib_add(struct mlx4_dev *dev)
543 {
544         static int mlx4_ib_version_printed;
545         struct mlx4_ib_dev *ibdev;
546         int num_ports = 0;
547         int i;
548
549         if (!mlx4_ib_version_printed) {
550                 printk(KERN_INFO "%s", mlx4_ib_version);
551                 ++mlx4_ib_version_printed;
552         }
553
554         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
555                 num_ports++;
556
557         /* No point in registering a device with no ports... */
558         if (num_ports == 0)
559                 return NULL;
560
561         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
562         if (!ibdev) {
563                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
564                 return NULL;
565         }
566
567         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
568                 goto err_dealloc;
569
570         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
571                 goto err_pd;
572
573         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
574         if (!ibdev->uar_map)
575                 goto err_uar;
576         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
577
578         ibdev->dev = dev;
579
580         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
581         ibdev->ib_dev.owner             = THIS_MODULE;
582         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
583         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
584         ibdev->num_ports                = num_ports;
585         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
586         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
587         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
588
589         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
590         ibdev->ib_dev.uverbs_cmd_mask   =
591                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
592                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
593                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
594                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
595                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
596                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
597                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
598                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
599                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
600                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
601                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
602                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
603                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
604                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
605                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
606                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
607                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
608                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
609                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
610                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
611                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
612
613         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
614         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
615         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
616         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
617         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
618         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
619         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
620         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
621         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
622         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
623         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
624         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
625         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
626         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
627         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
628         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
629         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
630         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
631         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
632         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
633         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
634         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
635         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
636         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
637         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
638         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
639         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
640         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
641         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
642         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
643         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
644         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
645         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
646         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
647         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
648         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
649         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
650         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
651         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
652         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
653
654         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
655         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
656         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
657         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
658
659         if (init_node_data(ibdev))
660                 goto err_map;
661
662         spin_lock_init(&ibdev->sm_lock);
663         mutex_init(&ibdev->cap_mask_mutex);
664
665         if (ib_register_device(&ibdev->ib_dev))
666                 goto err_map;
667
668         if (mlx4_ib_mad_init(ibdev))
669                 goto err_reg;
670
671         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
672                 if (device_create_file(&ibdev->ib_dev.dev,
673                                        mlx4_class_attributes[i]))
674                         goto err_reg;
675         }
676
677         return ibdev;
678
679 err_reg:
680         ib_unregister_device(&ibdev->ib_dev);
681
682 err_map:
683         iounmap(ibdev->uar_map);
684
685 err_uar:
686         mlx4_uar_free(dev, &ibdev->priv_uar);
687
688 err_pd:
689         mlx4_pd_free(dev, ibdev->priv_pdn);
690
691 err_dealloc:
692         ib_dealloc_device(&ibdev->ib_dev);
693
694         return NULL;
695 }
696
697 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
698 {
699         struct mlx4_ib_dev *ibdev = ibdev_ptr;
700         int p;
701
702         mlx4_ib_mad_cleanup(ibdev);
703         ib_unregister_device(&ibdev->ib_dev);
704
705         for (p = 1; p <= ibdev->num_ports; ++p)
706                 mlx4_CLOSE_PORT(dev, p);
707
708         iounmap(ibdev->uar_map);
709         mlx4_uar_free(dev, &ibdev->priv_uar);
710         mlx4_pd_free(dev, ibdev->priv_pdn);
711         ib_dealloc_device(&ibdev->ib_dev);
712 }
713
714 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
715                           enum mlx4_dev_event event, int port)
716 {
717         struct ib_event ibev;
718         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
719
720         if (port > ibdev->num_ports)
721                 return;
722
723         switch (event) {
724         case MLX4_DEV_EVENT_PORT_UP:
725                 ibev.event = IB_EVENT_PORT_ACTIVE;
726                 break;
727
728         case MLX4_DEV_EVENT_PORT_DOWN:
729                 ibev.event = IB_EVENT_PORT_ERR;
730                 break;
731
732         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
733                 ibev.event = IB_EVENT_DEVICE_FATAL;
734                 break;
735
736         default:
737                 return;
738         }
739
740         ibev.device           = ibdev_ptr;
741         ibev.element.port_num = port;
742
743         ib_dispatch_event(&ibev);
744 }
745
746 static struct mlx4_interface mlx4_ib_interface = {
747         .add    = mlx4_ib_add,
748         .remove = mlx4_ib_remove,
749         .event  = mlx4_ib_event
750 };
751
752 static int __init mlx4_ib_init(void)
753 {
754         return mlx4_register_interface(&mlx4_ib_interface);
755 }
756
757 static void __exit mlx4_ib_cleanup(void)
758 {
759         mlx4_unregister_interface(&mlx4_ib_interface);
760 }
761
762 module_init(mlx4_ib_init);
763 module_exit(mlx4_ib_cleanup);