Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
[linux-2.6] / drivers / infiniband / hw / mlx4 / main.c
1 /*
2  * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/errno.h>
36
37 #include <rdma/ib_smi.h>
38 #include <rdma/ib_user_verbs.h>
39
40 #include <linux/mlx4/driver.h>
41 #include <linux/mlx4/cmd.h>
42
43 #include "mlx4_ib.h"
44 #include "user.h"
45
46 #define DRV_NAME        "mlx4_ib"
47 #define DRV_VERSION     "0.01"
48 #define DRV_RELDATE     "May 1, 2006"
49
50 MODULE_AUTHOR("Roland Dreier");
51 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
52 MODULE_LICENSE("Dual BSD/GPL");
53 MODULE_VERSION(DRV_VERSION);
54
55 static const char mlx4_ib_version[] =
56         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
57         DRV_VERSION " (" DRV_RELDATE ")\n";
58
59 static void init_query_mad(struct ib_smp *mad)
60 {
61         mad->base_version  = 1;
62         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
63         mad->class_version = 1;
64         mad->method        = IB_MGMT_METHOD_GET;
65 }
66
67 static int mlx4_ib_query_device(struct ib_device *ibdev,
68                                 struct ib_device_attr *props)
69 {
70         struct mlx4_ib_dev *dev = to_mdev(ibdev);
71         struct ib_smp *in_mad  = NULL;
72         struct ib_smp *out_mad = NULL;
73         int err = -ENOMEM;
74
75         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
76         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
77         if (!in_mad || !out_mad)
78                 goto out;
79
80         init_query_mad(in_mad);
81         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
82
83         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
84         if (err)
85                 goto out;
86
87         memset(props, 0, sizeof *props);
88
89         props->fw_ver = dev->dev->caps.fw_ver;
90         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
91                 IB_DEVICE_PORT_ACTIVE_EVENT             |
92                 IB_DEVICE_SYS_IMAGE_GUID                |
93                 IB_DEVICE_RC_RNR_NAK_GEN;
94         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
95                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
96         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
97                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
98         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
99                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
100         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
101                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
102
103         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
104                 0xffffff;
105         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
106         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
107         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
108
109         props->max_mr_size         = ~0ull;
110         props->page_size_cap       = dev->dev->caps.page_size_cap;
111         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
112         props->max_qp_wr           = dev->dev->caps.max_wqes;
113         props->max_sge             = min(dev->dev->caps.max_sq_sg,
114                                          dev->dev->caps.max_rq_sg);
115         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
116         props->max_cqe             = dev->dev->caps.max_cqes;
117         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
118         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
119         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
120         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
121         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
122         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
123         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
124         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
125         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
126         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
127                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
128         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
129         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
130         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
131         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
132                                            props->max_mcast_grp;
133         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
134
135 out:
136         kfree(in_mad);
137         kfree(out_mad);
138
139         return err;
140 }
141
142 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
143                               struct ib_port_attr *props)
144 {
145         struct ib_smp *in_mad  = NULL;
146         struct ib_smp *out_mad = NULL;
147         int err = -ENOMEM;
148
149         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
150         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
151         if (!in_mad || !out_mad)
152                 goto out;
153
154         memset(props, 0, sizeof *props);
155
156         init_query_mad(in_mad);
157         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
158         in_mad->attr_mod = cpu_to_be32(port);
159
160         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
161         if (err)
162                 goto out;
163
164         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
165         props->lmc              = out_mad->data[34] & 0x7;
166         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
167         props->sm_sl            = out_mad->data[36] & 0xf;
168         props->state            = out_mad->data[32] & 0xf;
169         props->phys_state       = out_mad->data[33] >> 4;
170         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
171         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
172         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
173         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
174         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
175         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
176         props->active_width     = out_mad->data[31] & 0xf;
177         props->active_speed     = out_mad->data[35] >> 4;
178         props->max_mtu          = out_mad->data[41] & 0xf;
179         props->active_mtu       = out_mad->data[36] >> 4;
180         props->subnet_timeout   = out_mad->data[51] & 0x1f;
181         props->max_vl_num       = out_mad->data[37] >> 4;
182         props->init_type_reply  = out_mad->data[41] >> 4;
183
184 out:
185         kfree(in_mad);
186         kfree(out_mad);
187
188         return err;
189 }
190
191 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
192                              union ib_gid *gid)
193 {
194         struct ib_smp *in_mad  = NULL;
195         struct ib_smp *out_mad = NULL;
196         int err = -ENOMEM;
197
198         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
199         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
200         if (!in_mad || !out_mad)
201                 goto out;
202
203         init_query_mad(in_mad);
204         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
205         in_mad->attr_mod = cpu_to_be32(port);
206
207         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
208         if (err)
209                 goto out;
210
211         memcpy(gid->raw, out_mad->data + 8, 8);
212
213         init_query_mad(in_mad);
214         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
215         in_mad->attr_mod = cpu_to_be32(index / 8);
216
217         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
218         if (err)
219                 goto out;
220
221         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
222
223 out:
224         kfree(in_mad);
225         kfree(out_mad);
226         return err;
227 }
228
229 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
230                               u16 *pkey)
231 {
232         struct ib_smp *in_mad  = NULL;
233         struct ib_smp *out_mad = NULL;
234         int err = -ENOMEM;
235
236         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
237         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
238         if (!in_mad || !out_mad)
239                 goto out;
240
241         init_query_mad(in_mad);
242         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
243         in_mad->attr_mod = cpu_to_be32(index / 32);
244
245         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
246         if (err)
247                 goto out;
248
249         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
250
251 out:
252         kfree(in_mad);
253         kfree(out_mad);
254         return err;
255 }
256
257 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
258                                  struct ib_device_modify *props)
259 {
260         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
261                 return -EOPNOTSUPP;
262
263         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
264                 spin_lock(&to_mdev(ibdev)->sm_lock);
265                 memcpy(ibdev->node_desc, props->node_desc, 64);
266                 spin_unlock(&to_mdev(ibdev)->sm_lock);
267         }
268
269         return 0;
270 }
271
272 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
273                          u32 cap_mask)
274 {
275         struct mlx4_cmd_mailbox *mailbox;
276         int err;
277
278         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
279         if (IS_ERR(mailbox))
280                 return PTR_ERR(mailbox);
281
282         memset(mailbox->buf, 0, 256);
283
284         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
285                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
286                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
287         } else {
288                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
289                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
290         }
291
292         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
293                        MLX4_CMD_TIME_CLASS_B);
294
295         mlx4_free_cmd_mailbox(dev->dev, mailbox);
296         return err;
297 }
298
299 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
300                                struct ib_port_modify *props)
301 {
302         struct ib_port_attr attr;
303         u32 cap_mask;
304         int err;
305
306         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
307
308         err = mlx4_ib_query_port(ibdev, port, &attr);
309         if (err)
310                 goto out;
311
312         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
313                 ~props->clr_port_cap_mask;
314
315         err = mlx4_SET_PORT(to_mdev(ibdev), port,
316                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
317                             cap_mask);
318
319 out:
320         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
321         return err;
322 }
323
324 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
325                                                   struct ib_udata *udata)
326 {
327         struct mlx4_ib_dev *dev = to_mdev(ibdev);
328         struct mlx4_ib_ucontext *context;
329         struct mlx4_ib_alloc_ucontext_resp resp;
330         int err;
331
332         resp.qp_tab_size      = dev->dev->caps.num_qps;
333         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
334         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
335
336         context = kmalloc(sizeof *context, GFP_KERNEL);
337         if (!context)
338                 return ERR_PTR(-ENOMEM);
339
340         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
341         if (err) {
342                 kfree(context);
343                 return ERR_PTR(err);
344         }
345
346         INIT_LIST_HEAD(&context->db_page_list);
347         mutex_init(&context->db_page_mutex);
348
349         err = ib_copy_to_udata(udata, &resp, sizeof resp);
350         if (err) {
351                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
352                 kfree(context);
353                 return ERR_PTR(-EFAULT);
354         }
355
356         return &context->ibucontext;
357 }
358
359 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
360 {
361         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
362
363         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
364         kfree(context);
365
366         return 0;
367 }
368
369 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
370 {
371         struct mlx4_ib_dev *dev = to_mdev(context->device);
372
373         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
374                 return -EINVAL;
375
376         if (vma->vm_pgoff == 0) {
377                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
378
379                 if (io_remap_pfn_range(vma, vma->vm_start,
380                                        to_mucontext(context)->uar.pfn,
381                                        PAGE_SIZE, vma->vm_page_prot))
382                         return -EAGAIN;
383         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
384                 /* FIXME want pgprot_writecombine() for BlueFlame pages */
385                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
386
387                 if (io_remap_pfn_range(vma, vma->vm_start,
388                                        to_mucontext(context)->uar.pfn +
389                                        dev->dev->caps.num_uars,
390                                        PAGE_SIZE, vma->vm_page_prot))
391                         return -EAGAIN;
392         } else
393                 return -EINVAL;
394
395         return 0;
396 }
397
398 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
399                                       struct ib_ucontext *context,
400                                       struct ib_udata *udata)
401 {
402         struct mlx4_ib_pd *pd;
403         int err;
404
405         pd = kmalloc(sizeof *pd, GFP_KERNEL);
406         if (!pd)
407                 return ERR_PTR(-ENOMEM);
408
409         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
410         if (err) {
411                 kfree(pd);
412                 return ERR_PTR(err);
413         }
414
415         if (context)
416                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
417                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
418                         kfree(pd);
419                         return ERR_PTR(-EFAULT);
420                 }
421
422         return &pd->ibpd;
423 }
424
425 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
426 {
427         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
428         kfree(pd);
429
430         return 0;
431 }
432
433 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
434 {
435         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
436                                      &to_mqp(ibqp)->mqp, gid->raw);
437 }
438
439 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
440 {
441         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
442                                      &to_mqp(ibqp)->mqp, gid->raw);
443 }
444
445 static int init_node_data(struct mlx4_ib_dev *dev)
446 {
447         struct ib_smp *in_mad  = NULL;
448         struct ib_smp *out_mad = NULL;
449         int err = -ENOMEM;
450
451         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
452         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
453         if (!in_mad || !out_mad)
454                 goto out;
455
456         init_query_mad(in_mad);
457         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
458
459         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
460         if (err)
461                 goto out;
462
463         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
464
465         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
466
467         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
468         if (err)
469                 goto out;
470
471         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
472         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
473
474 out:
475         kfree(in_mad);
476         kfree(out_mad);
477         return err;
478 }
479
480 static ssize_t show_hca(struct class_device *cdev, char *buf)
481 {
482         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
483         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
484 }
485
486 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
487 {
488         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
489         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
490                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
491                        (int) dev->dev->caps.fw_ver & 0xffff);
492 }
493
494 static ssize_t show_rev(struct class_device *cdev, char *buf)
495 {
496         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
497         return sprintf(buf, "%x\n", dev->dev->rev_id);
498 }
499
500 static ssize_t show_board(struct class_device *cdev, char *buf)
501 {
502         struct mlx4_ib_dev *dev = container_of(cdev, struct mlx4_ib_dev, ib_dev.class_dev);
503         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, dev->dev->board_id);
504 }
505
506 static CLASS_DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
507 static CLASS_DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
508 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
509 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
510
511 static struct class_device_attribute *mlx4_class_attributes[] = {
512         &class_device_attr_hw_rev,
513         &class_device_attr_fw_ver,
514         &class_device_attr_hca_type,
515         &class_device_attr_board_id
516 };
517
518 static void *mlx4_ib_add(struct mlx4_dev *dev)
519 {
520         static int mlx4_ib_version_printed;
521         struct mlx4_ib_dev *ibdev;
522         int i;
523
524
525         if (!mlx4_ib_version_printed) {
526                 printk(KERN_INFO "%s", mlx4_ib_version);
527                 ++mlx4_ib_version_printed;
528         }
529
530         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
531         if (!ibdev) {
532                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
533                 return NULL;
534         }
535
536         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
537                 goto err_dealloc;
538
539         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
540                 goto err_pd;
541
542         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
543         if (!ibdev->uar_map)
544                 goto err_uar;
545         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
546
547         INIT_LIST_HEAD(&ibdev->pgdir_list);
548         mutex_init(&ibdev->pgdir_mutex);
549
550         ibdev->dev = dev;
551
552         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
553         ibdev->ib_dev.owner             = THIS_MODULE;
554         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
555         ibdev->ib_dev.phys_port_cnt     = dev->caps.num_ports;
556         ibdev->ib_dev.num_comp_vectors  = 1;
557         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
558
559         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
560         ibdev->ib_dev.uverbs_cmd_mask   =
561                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
562                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
563                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
564                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
565                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
566                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
567                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
568                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
569                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
570                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
571                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
572                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
573                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
574                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
575                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
576                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
577                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
578                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
579                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
580                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
581
582         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
583         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
584         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
585         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
586         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
587         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
588         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
589         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
590         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
591         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
592         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
593         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
594         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
595         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
596         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
597         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
598         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
599         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
600         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
601         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
602         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
603         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
604         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
605         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
606         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
607         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
608         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
609         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
610         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
611         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
612         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
613         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
614         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
615         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
616         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
617
618         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
619         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
620         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
621         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
622
623         if (init_node_data(ibdev))
624                 goto err_map;
625
626         spin_lock_init(&ibdev->sm_lock);
627         mutex_init(&ibdev->cap_mask_mutex);
628
629         if (ib_register_device(&ibdev->ib_dev))
630                 goto err_map;
631
632         if (mlx4_ib_mad_init(ibdev))
633                 goto err_reg;
634
635         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
636                 if (class_device_create_file(&ibdev->ib_dev.class_dev,
637                                                mlx4_class_attributes[i]))
638                         goto err_reg;
639         }
640
641         return ibdev;
642
643 err_reg:
644         ib_unregister_device(&ibdev->ib_dev);
645
646 err_map:
647         iounmap(ibdev->uar_map);
648
649 err_uar:
650         mlx4_uar_free(dev, &ibdev->priv_uar);
651
652 err_pd:
653         mlx4_pd_free(dev, ibdev->priv_pdn);
654
655 err_dealloc:
656         ib_dealloc_device(&ibdev->ib_dev);
657
658         return NULL;
659 }
660
661 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
662 {
663         struct mlx4_ib_dev *ibdev = ibdev_ptr;
664         int p;
665
666         for (p = 1; p <= dev->caps.num_ports; ++p)
667                 mlx4_CLOSE_PORT(dev, p);
668
669         mlx4_ib_mad_cleanup(ibdev);
670         ib_unregister_device(&ibdev->ib_dev);
671         iounmap(ibdev->uar_map);
672         mlx4_uar_free(dev, &ibdev->priv_uar);
673         mlx4_pd_free(dev, ibdev->priv_pdn);
674         ib_dealloc_device(&ibdev->ib_dev);
675 }
676
677 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
678                           enum mlx4_dev_event event, int subtype,
679                           int port)
680 {
681         struct ib_event ibev;
682
683         switch (event) {
684         case MLX4_EVENT_TYPE_PORT_CHANGE:
685                 ibev.event = subtype == MLX4_PORT_CHANGE_SUBTYPE_ACTIVE ?
686                         IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
687                 break;
688
689         case MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR:
690                 ibev.event = IB_EVENT_DEVICE_FATAL;
691                 break;
692
693         default:
694                 return;
695         }
696
697         ibev.device           = ibdev_ptr;
698         ibev.element.port_num = port;
699
700         ib_dispatch_event(&ibev);
701 }
702
703 static struct mlx4_interface mlx4_ib_interface = {
704         .add    = mlx4_ib_add,
705         .remove = mlx4_ib_remove,
706         .event  = mlx4_ib_event
707 };
708
709 static int __init mlx4_ib_init(void)
710 {
711         return mlx4_register_interface(&mlx4_ib_interface);
712 }
713
714 static void __exit mlx4_ib_cleanup(void)
715 {
716         mlx4_unregister_interface(&mlx4_ib_interface);
717 }
718
719 module_init(mlx4_ib_init);
720 module_exit(mlx4_ib_cleanup);