include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux-2.6.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
39 #include <rdma/ib_smi.h>
40 #include <rdma/ib_user_verbs.h>
41
42 #include <linux/mlx4/driver.h>
43 #include <linux/mlx4/cmd.h>
44
45 #include "mlx4_ib.h"
46 #include "user.h"
47
48 #define DRV_NAME        "mlx4_ib"
49 #define DRV_VERSION     "1.0"
50 #define DRV_RELDATE     "April 4, 2008"
51
52 MODULE_AUTHOR("Roland Dreier");
53 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
54 MODULE_LICENSE("Dual BSD/GPL");
55 MODULE_VERSION(DRV_VERSION);
56
57 static const char mlx4_ib_version[] =
58         DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
59         DRV_VERSION " (" DRV_RELDATE ")\n";
60
61 static void init_query_mad(struct ib_smp *mad)
62 {
63         mad->base_version  = 1;
64         mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
65         mad->class_version = 1;
66         mad->method        = IB_MGMT_METHOD_GET;
67 }
68
69 static int mlx4_ib_query_device(struct ib_device *ibdev,
70                                 struct ib_device_attr *props)
71 {
72         struct mlx4_ib_dev *dev = to_mdev(ibdev);
73         struct ib_smp *in_mad  = NULL;
74         struct ib_smp *out_mad = NULL;
75         int err = -ENOMEM;
76
77         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
78         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
79         if (!in_mad || !out_mad)
80                 goto out;
81
82         init_query_mad(in_mad);
83         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
84
85         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
86         if (err)
87                 goto out;
88
89         memset(props, 0, sizeof *props);
90
91         props->fw_ver = dev->dev->caps.fw_ver;
92         props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
93                 IB_DEVICE_PORT_ACTIVE_EVENT             |
94                 IB_DEVICE_SYS_IMAGE_GUID                |
95                 IB_DEVICE_RC_RNR_NAK_GEN                |
96                 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
97         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
98                 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
99         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
100                 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
101         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
102                 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
103         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
104                 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
105         if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
106                 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
107         if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
108                 props->device_cap_flags |= IB_DEVICE_UD_TSO;
109         if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
110                 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
111         if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
112             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
113             (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
114                 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
115
116         props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
117                 0xffffff;
118         props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
119         props->hw_ver              = be32_to_cpup((__be32 *) (out_mad->data + 32));
120         memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
121
122         props->max_mr_size         = ~0ull;
123         props->page_size_cap       = dev->dev->caps.page_size_cap;
124         props->max_qp              = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
125         props->max_qp_wr           = dev->dev->caps.max_wqes;
126         props->max_sge             = min(dev->dev->caps.max_sq_sg,
127                                          dev->dev->caps.max_rq_sg);
128         props->max_cq              = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
129         props->max_cqe             = dev->dev->caps.max_cqes;
130         props->max_mr              = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
131         props->max_pd              = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
132         props->max_qp_rd_atom      = dev->dev->caps.max_qp_dest_rdma;
133         props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
134         props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
135         props->max_srq             = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
136         props->max_srq_wr          = dev->dev->caps.max_srq_wqes - 1;
137         props->max_srq_sge         = dev->dev->caps.max_srq_sge;
138         props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64);
139         props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
140         props->atomic_cap          = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
141                 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
142         props->max_pkeys           = dev->dev->caps.pkey_table_len[1];
143         props->max_mcast_grp       = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
144         props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
145         props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
146                                            props->max_mcast_grp;
147         props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
148
149 out:
150         kfree(in_mad);
151         kfree(out_mad);
152
153         return err;
154 }
155
156 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
157                               struct ib_port_attr *props)
158 {
159         struct ib_smp *in_mad  = NULL;
160         struct ib_smp *out_mad = NULL;
161         int err = -ENOMEM;
162
163         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
164         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
165         if (!in_mad || !out_mad)
166                 goto out;
167
168         memset(props, 0, sizeof *props);
169
170         init_query_mad(in_mad);
171         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
172         in_mad->attr_mod = cpu_to_be32(port);
173
174         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
175         if (err)
176                 goto out;
177
178         props->lid              = be16_to_cpup((__be16 *) (out_mad->data + 16));
179         props->lmc              = out_mad->data[34] & 0x7;
180         props->sm_lid           = be16_to_cpup((__be16 *) (out_mad->data + 18));
181         props->sm_sl            = out_mad->data[36] & 0xf;
182         props->state            = out_mad->data[32] & 0xf;
183         props->phys_state       = out_mad->data[33] >> 4;
184         props->port_cap_flags   = be32_to_cpup((__be32 *) (out_mad->data + 20));
185         props->gid_tbl_len      = to_mdev(ibdev)->dev->caps.gid_table_len[port];
186         props->max_msg_sz       = to_mdev(ibdev)->dev->caps.max_msg_sz;
187         props->pkey_tbl_len     = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
188         props->bad_pkey_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 46));
189         props->qkey_viol_cntr   = be16_to_cpup((__be16 *) (out_mad->data + 48));
190         props->active_width     = out_mad->data[31] & 0xf;
191         props->active_speed     = out_mad->data[35] >> 4;
192         props->max_mtu          = out_mad->data[41] & 0xf;
193         props->active_mtu       = out_mad->data[36] >> 4;
194         props->subnet_timeout   = out_mad->data[51] & 0x1f;
195         props->max_vl_num       = out_mad->data[37] >> 4;
196         props->init_type_reply  = out_mad->data[41] >> 4;
197
198 out:
199         kfree(in_mad);
200         kfree(out_mad);
201
202         return err;
203 }
204
205 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
206                              union ib_gid *gid)
207 {
208         struct ib_smp *in_mad  = NULL;
209         struct ib_smp *out_mad = NULL;
210         int err = -ENOMEM;
211
212         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
213         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
214         if (!in_mad || !out_mad)
215                 goto out;
216
217         init_query_mad(in_mad);
218         in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
219         in_mad->attr_mod = cpu_to_be32(port);
220
221         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
222         if (err)
223                 goto out;
224
225         memcpy(gid->raw, out_mad->data + 8, 8);
226
227         init_query_mad(in_mad);
228         in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
229         in_mad->attr_mod = cpu_to_be32(index / 8);
230
231         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
232         if (err)
233                 goto out;
234
235         memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
236
237 out:
238         kfree(in_mad);
239         kfree(out_mad);
240         return err;
241 }
242
243 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
244                               u16 *pkey)
245 {
246         struct ib_smp *in_mad  = NULL;
247         struct ib_smp *out_mad = NULL;
248         int err = -ENOMEM;
249
250         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
251         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
252         if (!in_mad || !out_mad)
253                 goto out;
254
255         init_query_mad(in_mad);
256         in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
257         in_mad->attr_mod = cpu_to_be32(index / 32);
258
259         err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
260         if (err)
261                 goto out;
262
263         *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
264
265 out:
266         kfree(in_mad);
267         kfree(out_mad);
268         return err;
269 }
270
271 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
272                                  struct ib_device_modify *props)
273 {
274         if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
275                 return -EOPNOTSUPP;
276
277         if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
278                 spin_lock(&to_mdev(ibdev)->sm_lock);
279                 memcpy(ibdev->node_desc, props->node_desc, 64);
280                 spin_unlock(&to_mdev(ibdev)->sm_lock);
281         }
282
283         return 0;
284 }
285
286 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
287                          u32 cap_mask)
288 {
289         struct mlx4_cmd_mailbox *mailbox;
290         int err;
291
292         mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
293         if (IS_ERR(mailbox))
294                 return PTR_ERR(mailbox);
295
296         memset(mailbox->buf, 0, 256);
297
298         if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
299                 *(u8 *) mailbox->buf         = !!reset_qkey_viols << 6;
300                 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
301         } else {
302                 ((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
303                 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
304         }
305
306         err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
307                        MLX4_CMD_TIME_CLASS_B);
308
309         mlx4_free_cmd_mailbox(dev->dev, mailbox);
310         return err;
311 }
312
313 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
314                                struct ib_port_modify *props)
315 {
316         struct ib_port_attr attr;
317         u32 cap_mask;
318         int err;
319
320         mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
321
322         err = mlx4_ib_query_port(ibdev, port, &attr);
323         if (err)
324                 goto out;
325
326         cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
327                 ~props->clr_port_cap_mask;
328
329         err = mlx4_SET_PORT(to_mdev(ibdev), port,
330                             !!(mask & IB_PORT_RESET_QKEY_CNTR),
331                             cap_mask);
332
333 out:
334         mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
335         return err;
336 }
337
338 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
339                                                   struct ib_udata *udata)
340 {
341         struct mlx4_ib_dev *dev = to_mdev(ibdev);
342         struct mlx4_ib_ucontext *context;
343         struct mlx4_ib_alloc_ucontext_resp resp;
344         int err;
345
346         if (!dev->ib_active)
347                 return ERR_PTR(-EAGAIN);
348
349         resp.qp_tab_size      = dev->dev->caps.num_qps;
350         resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
351         resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
352
353         context = kmalloc(sizeof *context, GFP_KERNEL);
354         if (!context)
355                 return ERR_PTR(-ENOMEM);
356
357         err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
358         if (err) {
359                 kfree(context);
360                 return ERR_PTR(err);
361         }
362
363         INIT_LIST_HEAD(&context->db_page_list);
364         mutex_init(&context->db_page_mutex);
365
366         err = ib_copy_to_udata(udata, &resp, sizeof resp);
367         if (err) {
368                 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
369                 kfree(context);
370                 return ERR_PTR(-EFAULT);
371         }
372
373         return &context->ibucontext;
374 }
375
376 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
377 {
378         struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
379
380         mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
381         kfree(context);
382
383         return 0;
384 }
385
386 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
387 {
388         struct mlx4_ib_dev *dev = to_mdev(context->device);
389
390         if (vma->vm_end - vma->vm_start != PAGE_SIZE)
391                 return -EINVAL;
392
393         if (vma->vm_pgoff == 0) {
394                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
395
396                 if (io_remap_pfn_range(vma, vma->vm_start,
397                                        to_mucontext(context)->uar.pfn,
398                                        PAGE_SIZE, vma->vm_page_prot))
399                         return -EAGAIN;
400         } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
401                 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
402
403                 if (io_remap_pfn_range(vma, vma->vm_start,
404                                        to_mucontext(context)->uar.pfn +
405                                        dev->dev->caps.num_uars,
406                                        PAGE_SIZE, vma->vm_page_prot))
407                         return -EAGAIN;
408         } else
409                 return -EINVAL;
410
411         return 0;
412 }
413
414 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
415                                       struct ib_ucontext *context,
416                                       struct ib_udata *udata)
417 {
418         struct mlx4_ib_pd *pd;
419         int err;
420
421         pd = kmalloc(sizeof *pd, GFP_KERNEL);
422         if (!pd)
423                 return ERR_PTR(-ENOMEM);
424
425         err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
426         if (err) {
427                 kfree(pd);
428                 return ERR_PTR(err);
429         }
430
431         if (context)
432                 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
433                         mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
434                         kfree(pd);
435                         return ERR_PTR(-EFAULT);
436                 }
437
438         return &pd->ibpd;
439 }
440
441 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
442 {
443         mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
444         kfree(pd);
445
446         return 0;
447 }
448
449 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
450 {
451         return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
452                                      &to_mqp(ibqp)->mqp, gid->raw,
453                                      !!(to_mqp(ibqp)->flags &
454                                         MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
455 }
456
457 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
458 {
459         return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
460                                      &to_mqp(ibqp)->mqp, gid->raw);
461 }
462
463 static int init_node_data(struct mlx4_ib_dev *dev)
464 {
465         struct ib_smp *in_mad  = NULL;
466         struct ib_smp *out_mad = NULL;
467         int err = -ENOMEM;
468
469         in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
470         out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
471         if (!in_mad || !out_mad)
472                 goto out;
473
474         init_query_mad(in_mad);
475         in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
476
477         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
478         if (err)
479                 goto out;
480
481         memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
482
483         in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
484
485         err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
486         if (err)
487                 goto out;
488
489         dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
490         memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
491
492 out:
493         kfree(in_mad);
494         kfree(out_mad);
495         return err;
496 }
497
498 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
499                         char *buf)
500 {
501         struct mlx4_ib_dev *dev =
502                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
503         return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
504 }
505
506 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
507                            char *buf)
508 {
509         struct mlx4_ib_dev *dev =
510                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
511         return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
512                        (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
513                        (int) dev->dev->caps.fw_ver & 0xffff);
514 }
515
516 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
517                         char *buf)
518 {
519         struct mlx4_ib_dev *dev =
520                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
521         return sprintf(buf, "%x\n", dev->dev->rev_id);
522 }
523
524 static ssize_t show_board(struct device *device, struct device_attribute *attr,
525                           char *buf)
526 {
527         struct mlx4_ib_dev *dev =
528                 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
529         return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
530                        dev->dev->board_id);
531 }
532
533 static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
534 static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
535 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
536 static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
537
538 static struct device_attribute *mlx4_class_attributes[] = {
539         &dev_attr_hw_rev,
540         &dev_attr_fw_ver,
541         &dev_attr_hca_type,
542         &dev_attr_board_id
543 };
544
545 static void *mlx4_ib_add(struct mlx4_dev *dev)
546 {
547         struct mlx4_ib_dev *ibdev;
548         int num_ports = 0;
549         int i;
550
551         printk_once(KERN_INFO "%s", mlx4_ib_version);
552
553         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
554                 num_ports++;
555
556         /* No point in registering a device with no ports... */
557         if (num_ports == 0)
558                 return NULL;
559
560         ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
561         if (!ibdev) {
562                 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
563                 return NULL;
564         }
565
566         if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
567                 goto err_dealloc;
568
569         if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
570                 goto err_pd;
571
572         ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
573         if (!ibdev->uar_map)
574                 goto err_uar;
575         MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
576
577         ibdev->dev = dev;
578
579         strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
580         ibdev->ib_dev.owner             = THIS_MODULE;
581         ibdev->ib_dev.node_type         = RDMA_NODE_IB_CA;
582         ibdev->ib_dev.local_dma_lkey    = dev->caps.reserved_lkey;
583         ibdev->num_ports                = num_ports;
584         ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
585         ibdev->ib_dev.num_comp_vectors  = dev->caps.num_comp_vectors;
586         ibdev->ib_dev.dma_device        = &dev->pdev->dev;
587
588         ibdev->ib_dev.uverbs_abi_ver    = MLX4_IB_UVERBS_ABI_VERSION;
589         ibdev->ib_dev.uverbs_cmd_mask   =
590                 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
591                 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
592                 (1ull << IB_USER_VERBS_CMD_QUERY_PORT)          |
593                 (1ull << IB_USER_VERBS_CMD_ALLOC_PD)            |
594                 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD)          |
595                 (1ull << IB_USER_VERBS_CMD_REG_MR)              |
596                 (1ull << IB_USER_VERBS_CMD_DEREG_MR)            |
597                 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
598                 (1ull << IB_USER_VERBS_CMD_CREATE_CQ)           |
599                 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ)           |
600                 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ)          |
601                 (1ull << IB_USER_VERBS_CMD_CREATE_QP)           |
602                 (1ull << IB_USER_VERBS_CMD_MODIFY_QP)           |
603                 (1ull << IB_USER_VERBS_CMD_QUERY_QP)            |
604                 (1ull << IB_USER_VERBS_CMD_DESTROY_QP)          |
605                 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)        |
606                 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST)        |
607                 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ)          |
608                 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)          |
609                 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ)           |
610                 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
611
612         ibdev->ib_dev.query_device      = mlx4_ib_query_device;
613         ibdev->ib_dev.query_port        = mlx4_ib_query_port;
614         ibdev->ib_dev.query_gid         = mlx4_ib_query_gid;
615         ibdev->ib_dev.query_pkey        = mlx4_ib_query_pkey;
616         ibdev->ib_dev.modify_device     = mlx4_ib_modify_device;
617         ibdev->ib_dev.modify_port       = mlx4_ib_modify_port;
618         ibdev->ib_dev.alloc_ucontext    = mlx4_ib_alloc_ucontext;
619         ibdev->ib_dev.dealloc_ucontext  = mlx4_ib_dealloc_ucontext;
620         ibdev->ib_dev.mmap              = mlx4_ib_mmap;
621         ibdev->ib_dev.alloc_pd          = mlx4_ib_alloc_pd;
622         ibdev->ib_dev.dealloc_pd        = mlx4_ib_dealloc_pd;
623         ibdev->ib_dev.create_ah         = mlx4_ib_create_ah;
624         ibdev->ib_dev.query_ah          = mlx4_ib_query_ah;
625         ibdev->ib_dev.destroy_ah        = mlx4_ib_destroy_ah;
626         ibdev->ib_dev.create_srq        = mlx4_ib_create_srq;
627         ibdev->ib_dev.modify_srq        = mlx4_ib_modify_srq;
628         ibdev->ib_dev.query_srq         = mlx4_ib_query_srq;
629         ibdev->ib_dev.destroy_srq       = mlx4_ib_destroy_srq;
630         ibdev->ib_dev.post_srq_recv     = mlx4_ib_post_srq_recv;
631         ibdev->ib_dev.create_qp         = mlx4_ib_create_qp;
632         ibdev->ib_dev.modify_qp         = mlx4_ib_modify_qp;
633         ibdev->ib_dev.query_qp          = mlx4_ib_query_qp;
634         ibdev->ib_dev.destroy_qp        = mlx4_ib_destroy_qp;
635         ibdev->ib_dev.post_send         = mlx4_ib_post_send;
636         ibdev->ib_dev.post_recv         = mlx4_ib_post_recv;
637         ibdev->ib_dev.create_cq         = mlx4_ib_create_cq;
638         ibdev->ib_dev.modify_cq         = mlx4_ib_modify_cq;
639         ibdev->ib_dev.resize_cq         = mlx4_ib_resize_cq;
640         ibdev->ib_dev.destroy_cq        = mlx4_ib_destroy_cq;
641         ibdev->ib_dev.poll_cq           = mlx4_ib_poll_cq;
642         ibdev->ib_dev.req_notify_cq     = mlx4_ib_arm_cq;
643         ibdev->ib_dev.get_dma_mr        = mlx4_ib_get_dma_mr;
644         ibdev->ib_dev.reg_user_mr       = mlx4_ib_reg_user_mr;
645         ibdev->ib_dev.dereg_mr          = mlx4_ib_dereg_mr;
646         ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
647         ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
648         ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
649         ibdev->ib_dev.attach_mcast      = mlx4_ib_mcg_attach;
650         ibdev->ib_dev.detach_mcast      = mlx4_ib_mcg_detach;
651         ibdev->ib_dev.process_mad       = mlx4_ib_process_mad;
652
653         ibdev->ib_dev.alloc_fmr         = mlx4_ib_fmr_alloc;
654         ibdev->ib_dev.map_phys_fmr      = mlx4_ib_map_phys_fmr;
655         ibdev->ib_dev.unmap_fmr         = mlx4_ib_unmap_fmr;
656         ibdev->ib_dev.dealloc_fmr       = mlx4_ib_fmr_dealloc;
657
658         if (init_node_data(ibdev))
659                 goto err_map;
660
661         spin_lock_init(&ibdev->sm_lock);
662         mutex_init(&ibdev->cap_mask_mutex);
663
664         if (ib_register_device(&ibdev->ib_dev))
665                 goto err_map;
666
667         if (mlx4_ib_mad_init(ibdev))
668                 goto err_reg;
669
670         for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
671                 if (device_create_file(&ibdev->ib_dev.dev,
672                                        mlx4_class_attributes[i]))
673                         goto err_reg;
674         }
675
676         ibdev->ib_active = true;
677
678         return ibdev;
679
680 err_reg:
681         ib_unregister_device(&ibdev->ib_dev);
682
683 err_map:
684         iounmap(ibdev->uar_map);
685
686 err_uar:
687         mlx4_uar_free(dev, &ibdev->priv_uar);
688
689 err_pd:
690         mlx4_pd_free(dev, ibdev->priv_pdn);
691
692 err_dealloc:
693         ib_dealloc_device(&ibdev->ib_dev);
694
695         return NULL;
696 }
697
698 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
699 {
700         struct mlx4_ib_dev *ibdev = ibdev_ptr;
701         int p;
702
703         mlx4_ib_mad_cleanup(ibdev);
704         ib_unregister_device(&ibdev->ib_dev);
705
706         for (p = 1; p <= ibdev->num_ports; ++p)
707                 mlx4_CLOSE_PORT(dev, p);
708
709         iounmap(ibdev->uar_map);
710         mlx4_uar_free(dev, &ibdev->priv_uar);
711         mlx4_pd_free(dev, ibdev->priv_pdn);
712         ib_dealloc_device(&ibdev->ib_dev);
713 }
714
715 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
716                           enum mlx4_dev_event event, int port)
717 {
718         struct ib_event ibev;
719         struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
720
721         if (port > ibdev->num_ports)
722                 return;
723
724         switch (event) {
725         case MLX4_DEV_EVENT_PORT_UP:
726                 ibev.event = IB_EVENT_PORT_ACTIVE;
727                 break;
728
729         case MLX4_DEV_EVENT_PORT_DOWN:
730                 ibev.event = IB_EVENT_PORT_ERR;
731                 break;
732
733         case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
734                 ibdev->ib_active = false;
735                 ibev.event = IB_EVENT_DEVICE_FATAL;
736                 break;
737
738         default:
739                 return;
740         }
741
742         ibev.device           = ibdev_ptr;
743         ibev.element.port_num = port;
744
745         ib_dispatch_event(&ibev);
746 }
747
748 static struct mlx4_interface mlx4_ib_interface = {
749         .add    = mlx4_ib_add,
750         .remove = mlx4_ib_remove,
751         .event  = mlx4_ib_event
752 };
753
754 static int __init mlx4_ib_init(void)
755 {
756         return mlx4_register_interface(&mlx4_ib_interface);
757 }
758
759 static void __exit mlx4_ib_cleanup(void)
760 {
761         mlx4_unregister_interface(&mlx4_ib_interface);
762 }
763
764 module_init(mlx4_ib_init);
765 module_exit(mlx4_ib_cleanup);