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IB/mlx4: Add support for memory management extensions and local DMA L_Key
[linux-2.6/sactl.git] / drivers / infiniband / hw / mlx4 / main.c
blob38d6907ab521c97ea0fdcdba2039819d9d51d8b2
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 "1.0"
48 #define DRV_RELDATE "April 4, 2008"
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 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
95 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
96 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
97 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
98 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
99 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
100 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
101 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
102 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
103 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
104 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
105 if (dev->dev->caps.max_gso_sz)
106 props->device_cap_flags |= IB_DEVICE_UD_TSO;
107 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
108 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
109 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
110 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
111 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
112 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
113
114 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
115 0xffffff;
116 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
117 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
118 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
119
120 props->max_mr_size = ~0ull;
121 props->page_size_cap = dev->dev->caps.page_size_cap;
122 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
123 props->max_qp_wr = dev->dev->caps.max_wqes;
124 props->max_sge = min(dev->dev->caps.max_sq_sg,
125 dev->dev->caps.max_rq_sg);
126 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
127 props->max_cqe = dev->dev->caps.max_cqes;
128 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
129 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
130 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
131 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
132 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
133 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
134 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
135 props->max_srq_sge = dev->dev->caps.max_srq_sge;
136 props->max_fast_reg_page_list_len = PAGE_SIZE / sizeof (u64);
137 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
138 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
139 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
140 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
141 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
142 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
143 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
144 props->max_mcast_grp;
145 props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
146
147 out:
148 kfree(in_mad);
149 kfree(out_mad);
150
151 return err;
152 }
153
154 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
155 struct ib_port_attr *props)
156 {
157 struct ib_smp *in_mad = NULL;
158 struct ib_smp *out_mad = NULL;
159 int err = -ENOMEM;
160
161 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
162 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
163 if (!in_mad || !out_mad)
164 goto out;
165
166 memset(props, 0, sizeof *props);
167
168 init_query_mad(in_mad);
169 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
170 in_mad->attr_mod = cpu_to_be32(port);
171
172 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
173 if (err)
174 goto out;
175
176 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
177 props->lmc = out_mad->data[34] & 0x7;
178 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
179 props->sm_sl = out_mad->data[36] & 0xf;
180 props->state = out_mad->data[32] & 0xf;
181 props->phys_state = out_mad->data[33] >> 4;
182 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
183 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
184 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
185 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
186 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
187 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
188 props->active_width = out_mad->data[31] & 0xf;
189 props->active_speed = out_mad->data[35] >> 4;
190 props->max_mtu = out_mad->data[41] & 0xf;
191 props->active_mtu = out_mad->data[36] >> 4;
192 props->subnet_timeout = out_mad->data[51] & 0x1f;
193 props->max_vl_num = out_mad->data[37] >> 4;
194 props->init_type_reply = out_mad->data[41] >> 4;
195
196 out:
197 kfree(in_mad);
198 kfree(out_mad);
199
200 return err;
201 }
202
203 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
204 union ib_gid *gid)
205 {
206 struct ib_smp *in_mad = NULL;
207 struct ib_smp *out_mad = NULL;
208 int err = -ENOMEM;
209
210 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
211 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
212 if (!in_mad || !out_mad)
213 goto out;
214
215 init_query_mad(in_mad);
216 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
217 in_mad->attr_mod = cpu_to_be32(port);
218
219 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
220 if (err)
221 goto out;
222
223 memcpy(gid->raw, out_mad->data + 8, 8);
224
225 init_query_mad(in_mad);
226 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
227 in_mad->attr_mod = cpu_to_be32(index / 8);
228
229 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
230 if (err)
231 goto out;
232
233 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
234
235 out:
236 kfree(in_mad);
237 kfree(out_mad);
238 return err;
239 }
240
241 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
242 u16 *pkey)
243 {
244 struct ib_smp *in_mad = NULL;
245 struct ib_smp *out_mad = NULL;
246 int err = -ENOMEM;
247
248 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
249 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
250 if (!in_mad || !out_mad)
251 goto out;
252
253 init_query_mad(in_mad);
254 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
255 in_mad->attr_mod = cpu_to_be32(index / 32);
256
257 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
258 if (err)
259 goto out;
260
261 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
262
263 out:
264 kfree(in_mad);
265 kfree(out_mad);
266 return err;
267 }
268
269 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
270 struct ib_device_modify *props)
271 {
272 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
273 return -EOPNOTSUPP;
274
275 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
276 spin_lock(&to_mdev(ibdev)->sm_lock);
277 memcpy(ibdev->node_desc, props->node_desc, 64);
278 spin_unlock(&to_mdev(ibdev)->sm_lock);
279 }
280
281 return 0;
282 }
283
284 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
285 u32 cap_mask)
286 {
287 struct mlx4_cmd_mailbox *mailbox;
288 int err;
289
290 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
291 if (IS_ERR(mailbox))
292 return PTR_ERR(mailbox);
293
294 memset(mailbox->buf, 0, 256);
295
296 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
297 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
298 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
299 } else {
300 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
301 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
302 }
303
304 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
305 MLX4_CMD_TIME_CLASS_B);
306
307 mlx4_free_cmd_mailbox(dev->dev, mailbox);
308 return err;
309 }
310
311 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
312 struct ib_port_modify *props)
313 {
314 struct ib_port_attr attr;
315 u32 cap_mask;
316 int err;
317
318 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
319
320 err = mlx4_ib_query_port(ibdev, port, &attr);
321 if (err)
322 goto out;
323
324 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
325 ~props->clr_port_cap_mask;
326
327 err = mlx4_SET_PORT(to_mdev(ibdev), port,
328 !!(mask & IB_PORT_RESET_QKEY_CNTR),
329 cap_mask);
330
331 out:
332 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
333 return err;
334 }
335
336 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
337 struct ib_udata *udata)
338 {
339 struct mlx4_ib_dev *dev = to_mdev(ibdev);
340 struct mlx4_ib_ucontext *context;
341 struct mlx4_ib_alloc_ucontext_resp resp;
342 int err;
343
344 resp.qp_tab_size = dev->dev->caps.num_qps;
345 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
346 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
347
348 context = kmalloc(sizeof *context, GFP_KERNEL);
349 if (!context)
350 return ERR_PTR(-ENOMEM);
351
352 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
353 if (err) {
354 kfree(context);
355 return ERR_PTR(err);
356 }
357
358 INIT_LIST_HEAD(&context->db_page_list);
359 mutex_init(&context->db_page_mutex);
360
361 err = ib_copy_to_udata(udata, &resp, sizeof resp);
362 if (err) {
363 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
364 kfree(context);
365 return ERR_PTR(-EFAULT);
366 }
367
368 return &context->ibucontext;
369 }
370
371 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
372 {
373 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
374
375 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
376 kfree(context);
377
378 return 0;
379 }
380
381 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
382 {
383 struct mlx4_ib_dev *dev = to_mdev(context->device);
384
385 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
386 return -EINVAL;
387
388 if (vma->vm_pgoff == 0) {
389 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
390
391 if (io_remap_pfn_range(vma, vma->vm_start,
392 to_mucontext(context)->uar.pfn,
393 PAGE_SIZE, vma->vm_page_prot))
394 return -EAGAIN;
395 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
396 /* FIXME want pgprot_writecombine() for BlueFlame pages */
397 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
398
399 if (io_remap_pfn_range(vma, vma->vm_start,
400 to_mucontext(context)->uar.pfn +
401 dev->dev->caps.num_uars,
402 PAGE_SIZE, vma->vm_page_prot))
403 return -EAGAIN;
404 } else
405 return -EINVAL;
406
407 return 0;
408 }
409
410 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
411 struct ib_ucontext *context,
412 struct ib_udata *udata)
413 {
414 struct mlx4_ib_pd *pd;
415 int err;
416
417 pd = kmalloc(sizeof *pd, GFP_KERNEL);
418 if (!pd)
419 return ERR_PTR(-ENOMEM);
420
421 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
422 if (err) {
423 kfree(pd);
424 return ERR_PTR(err);
425 }
426
427 if (context)
428 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
429 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
430 kfree(pd);
431 return ERR_PTR(-EFAULT);
432 }
433
434 return &pd->ibpd;
435 }
436
437 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
438 {
439 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
440 kfree(pd);
441
442 return 0;
443 }
444
445 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
446 {
447 return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
448 &to_mqp(ibqp)->mqp, gid->raw,
449 !!(to_mqp(ibqp)->flags &
450 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
451 }
452
453 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
454 {
455 return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
456 &to_mqp(ibqp)->mqp, gid->raw);
457 }
458
459 static int init_node_data(struct mlx4_ib_dev *dev)
460 {
461 struct ib_smp *in_mad = NULL;
462 struct ib_smp *out_mad = NULL;
463 int err = -ENOMEM;
464
465 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
466 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
467 if (!in_mad || !out_mad)
468 goto out;
469
470 init_query_mad(in_mad);
471 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
472
473 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
474 if (err)
475 goto out;
476
477 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
478
479 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
480
481 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
482 if (err)
483 goto out;
484
485 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
486 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
487
488 out:
489 kfree(in_mad);
490 kfree(out_mad);
491 return err;
492 }
493
494 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
495 char *buf)
496 {
497 struct mlx4_ib_dev *dev =
498 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
499 return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
500 }
501
502 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
503 char *buf)
504 {
505 struct mlx4_ib_dev *dev =
506 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
507 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
508 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
509 (int) dev->dev->caps.fw_ver & 0xffff);
510 }
511
512 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
513 char *buf)
514 {
515 struct mlx4_ib_dev *dev =
516 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
517 return sprintf(buf, "%x\n", dev->dev->rev_id);
518 }
519
520 static ssize_t show_board(struct device *device, struct device_attribute *attr,
521 char *buf)
522 {
523 struct mlx4_ib_dev *dev =
524 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
525 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
526 dev->dev->board_id);
527 }
528
529 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
530 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
531 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
532 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
533
534 static struct device_attribute *mlx4_class_attributes[] = {
535 &dev_attr_hw_rev,
536 &dev_attr_fw_ver,
537 &dev_attr_hca_type,
538 &dev_attr_board_id
539 };
540
541 static void *mlx4_ib_add(struct mlx4_dev *dev)
542 {
543 static int mlx4_ib_version_printed;
544 struct mlx4_ib_dev *ibdev;
545 int i;
546
547
548 if (!mlx4_ib_version_printed) {
549 printk(KERN_INFO "%s", mlx4_ib_version);
550 ++mlx4_ib_version_printed;
551 }
552
553 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
554 if (!ibdev) {
555 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
556 return NULL;
557 }
558
559 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
560 goto err_dealloc;
561
562 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
563 goto err_pd;
564
565 ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
566 if (!ibdev->uar_map)
567 goto err_uar;
568 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
569
570 ibdev->dev = dev;
571
572 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
573 ibdev->ib_dev.owner = THIS_MODULE;
574 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
575 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
576 ibdev->ib_dev.phys_port_cnt = dev->caps.num_ports;
577 ibdev->ib_dev.num_comp_vectors = 1;
578 ibdev->ib_dev.dma_device = &dev->pdev->dev;
579
580 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
581 ibdev->ib_dev.uverbs_cmd_mask =
582 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
583 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
584 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
585 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
586 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
587 (1ull << IB_USER_VERBS_CMD_REG_MR) |
588 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
589 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
590 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
591 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
592 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
593 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
594 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
595 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
596 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
597 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
598 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
599 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
600 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
601 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
602 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
603
604 ibdev->ib_dev.query_device = mlx4_ib_query_device;
605 ibdev->ib_dev.query_port = mlx4_ib_query_port;
606 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
607 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
608 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
609 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
610 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
611 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
612 ibdev->ib_dev.mmap = mlx4_ib_mmap;
613 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
614 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
615 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
616 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
617 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
618 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
619 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
620 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
621 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
622 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
623 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
624 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
625 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
626 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
627 ibdev->ib_dev.post_send = mlx4_ib_post_send;
628 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
629 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
630 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
631 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
632 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
633 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
634 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
635 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
636 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
637 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
638 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
639 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
640 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
641 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
642 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
643 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
644
645 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
646 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
647 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
648 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
649
650 if (init_node_data(ibdev))
651 goto err_map;
652
653 spin_lock_init(&ibdev->sm_lock);
654 mutex_init(&ibdev->cap_mask_mutex);
655
656 if (ib_register_device(&ibdev->ib_dev))
657 goto err_map;
658
659 if (mlx4_ib_mad_init(ibdev))
660 goto err_reg;
661
662 for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
663 if (device_create_file(&ibdev->ib_dev.dev,
664 mlx4_class_attributes[i]))
665 goto err_reg;
666 }
667
668 return ibdev;
669
670 err_reg:
671 ib_unregister_device(&ibdev->ib_dev);
672
673 err_map:
674 iounmap(ibdev->uar_map);
675
676 err_uar:
677 mlx4_uar_free(dev, &ibdev->priv_uar);
678
679 err_pd:
680 mlx4_pd_free(dev, ibdev->priv_pdn);
681
682 err_dealloc:
683 ib_dealloc_device(&ibdev->ib_dev);
684
685 return NULL;
686 }
687
688 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
689 {
690 struct mlx4_ib_dev *ibdev = ibdev_ptr;
691 int p;
692
693 for (p = 1; p <= dev->caps.num_ports; ++p)
694 mlx4_CLOSE_PORT(dev, p);
695
696 mlx4_ib_mad_cleanup(ibdev);
697 ib_unregister_device(&ibdev->ib_dev);
698 iounmap(ibdev->uar_map);
699 mlx4_uar_free(dev, &ibdev->priv_uar);
700 mlx4_pd_free(dev, ibdev->priv_pdn);
701 ib_dealloc_device(&ibdev->ib_dev);
702 }
703
704 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
705 enum mlx4_dev_event event, int port)
706 {
707 struct ib_event ibev;
708
709 switch (event) {
710 case MLX4_DEV_EVENT_PORT_UP:
711 ibev.event = IB_EVENT_PORT_ACTIVE;
712 break;
713
714 case MLX4_DEV_EVENT_PORT_DOWN:
715 ibev.event = IB_EVENT_PORT_ERR;
716 break;
717
718 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
719 ibev.event = IB_EVENT_DEVICE_FATAL;
720 break;
721
722 default:
723 return;
724 }
725
726 ibev.device = ibdev_ptr;
727 ibev.element.port_num = port;
728
729 ib_dispatch_event(&ibev);
730 }
731
732 static struct mlx4_interface mlx4_ib_interface = {
733 .add = mlx4_ib_add,
734 .remove = mlx4_ib_remove,
735 .event = mlx4_ib_event
736 };
737
738 static int __init mlx4_ib_init(void)
739 {
740 return mlx4_register_interface(&mlx4_ib_interface);
741 }
742
743 static void __exit mlx4_ib_cleanup(void)
744 {
745 mlx4_unregister_interface(&mlx4_ib_interface);
746 }
747
748 module_init(mlx4_ib_init);
749 module_exit(mlx4_ib_cleanup);
SocketAccessConTroL development