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x86/amd-iommu: Add per IOMMU reference counting
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx4 / main.c
blob3cb3f47a10b85753cded5f80f019517bf81e3635
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 if (!dev->ib_active)
346 return ERR_PTR(-EAGAIN);
347
348 resp.qp_tab_size = dev->dev->caps.num_qps;
349 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
350 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
351
352 context = kmalloc(sizeof *context, GFP_KERNEL);
353 if (!context)
354 return ERR_PTR(-ENOMEM);
355
356 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
357 if (err) {
358 kfree(context);
359 return ERR_PTR(err);
360 }
361
362 INIT_LIST_HEAD(&context->db_page_list);
363 mutex_init(&context->db_page_mutex);
364
365 err = ib_copy_to_udata(udata, &resp, sizeof resp);
366 if (err) {
367 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
368 kfree(context);
369 return ERR_PTR(-EFAULT);
370 }
371
372 return &context->ibucontext;
373 }
374
375 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
376 {
377 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
378
379 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
380 kfree(context);
381
382 return 0;
383 }
384
385 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
386 {
387 struct mlx4_ib_dev *dev = to_mdev(context->device);
388
389 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
390 return -EINVAL;
391
392 if (vma->vm_pgoff == 0) {
393 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
394
395 if (io_remap_pfn_range(vma, vma->vm_start,
396 to_mucontext(context)->uar.pfn,
397 PAGE_SIZE, vma->vm_page_prot))
398 return -EAGAIN;
399 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
400 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
401
402 if (io_remap_pfn_range(vma, vma->vm_start,
403 to_mucontext(context)->uar.pfn +
404 dev->dev->caps.num_uars,
405 PAGE_SIZE, vma->vm_page_prot))
406 return -EAGAIN;
407 } else
408 return -EINVAL;
409
410 return 0;
411 }
412
413 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
414 struct ib_ucontext *context,
415 struct ib_udata *udata)
416 {
417 struct mlx4_ib_pd *pd;
418 int err;
419
420 pd = kmalloc(sizeof *pd, GFP_KERNEL);
421 if (!pd)
422 return ERR_PTR(-ENOMEM);
423
424 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
425 if (err) {
426 kfree(pd);
427 return ERR_PTR(err);
428 }
429
430 if (context)
431 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
432 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
433 kfree(pd);
434 return ERR_PTR(-EFAULT);
435 }
436
437 return &pd->ibpd;
438 }
439
440 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
441 {
442 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
443 kfree(pd);
444
445 return 0;
446 }
447
448 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
449 {
450 return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
451 &to_mqp(ibqp)->mqp, gid->raw,
452 !!(to_mqp(ibqp)->flags &
453 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK));
454 }
455
456 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
457 {
458 return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
459 &to_mqp(ibqp)->mqp, gid->raw);
460 }
461
462 static int init_node_data(struct mlx4_ib_dev *dev)
463 {
464 struct ib_smp *in_mad = NULL;
465 struct ib_smp *out_mad = NULL;
466 int err = -ENOMEM;
467
468 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
469 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
470 if (!in_mad || !out_mad)
471 goto out;
472
473 init_query_mad(in_mad);
474 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
475
476 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
477 if (err)
478 goto out;
479
480 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
481
482 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
483
484 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
485 if (err)
486 goto out;
487
488 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32));
489 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
490
491 out:
492 kfree(in_mad);
493 kfree(out_mad);
494 return err;
495 }
496
497 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
498 char *buf)
499 {
500 struct mlx4_ib_dev *dev =
501 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
502 return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
503 }
504
505 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
506 char *buf)
507 {
508 struct mlx4_ib_dev *dev =
509 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
510 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
511 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
512 (int) dev->dev->caps.fw_ver & 0xffff);
513 }
514
515 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
516 char *buf)
517 {
518 struct mlx4_ib_dev *dev =
519 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
520 return sprintf(buf, "%x\n", dev->dev->rev_id);
521 }
522
523 static ssize_t show_board(struct device *device, struct device_attribute *attr,
524 char *buf)
525 {
526 struct mlx4_ib_dev *dev =
527 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
528 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
529 dev->dev->board_id);
530 }
531
532 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
533 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
534 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
535 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
536
537 static struct device_attribute *mlx4_class_attributes[] = {
538 &dev_attr_hw_rev,
539 &dev_attr_fw_ver,
540 &dev_attr_hca_type,
541 &dev_attr_board_id
542 };
543
544 static void *mlx4_ib_add(struct mlx4_dev *dev)
545 {
546 struct mlx4_ib_dev *ibdev;
547 int num_ports = 0;
548 int i;
549
550 printk_once(KERN_INFO "%s", mlx4_ib_version);
551
552 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
553 num_ports++;
554
555 /* No point in registering a device with no ports... */
556 if (num_ports == 0)
557 return NULL;
558
559 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
560 if (!ibdev) {
561 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
562 return NULL;
563 }
564
565 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
566 goto err_dealloc;
567
568 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
569 goto err_pd;
570
571 ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
572 if (!ibdev->uar_map)
573 goto err_uar;
574 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
575
576 ibdev->dev = dev;
577
578 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
579 ibdev->ib_dev.owner = THIS_MODULE;
580 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
581 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
582 ibdev->num_ports = num_ports;
583 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
584 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
585 ibdev->ib_dev.dma_device = &dev->pdev->dev;
586
587 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
588 ibdev->ib_dev.uverbs_cmd_mask =
589 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
590 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
591 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
592 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
593 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
594 (1ull << IB_USER_VERBS_CMD_REG_MR) |
595 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
596 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
597 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
598 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
599 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
600 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
601 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
602 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
603 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
604 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
605 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
606 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
607 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
608 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
609 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
610
611 ibdev->ib_dev.query_device = mlx4_ib_query_device;
612 ibdev->ib_dev.query_port = mlx4_ib_query_port;
613 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
614 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
615 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
616 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
617 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
618 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
619 ibdev->ib_dev.mmap = mlx4_ib_mmap;
620 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
621 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
622 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
623 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
624 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
625 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
626 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
627 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
628 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
629 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
630 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
631 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
632 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
633 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
634 ibdev->ib_dev.post_send = mlx4_ib_post_send;
635 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
636 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
637 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
638 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
639 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
640 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
641 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
642 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
643 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
644 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
645 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
646 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
647 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
648 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
649 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
650 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
651
652 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
653 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
654 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
655 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
656
657 if (init_node_data(ibdev))
658 goto err_map;
659
660 spin_lock_init(&ibdev->sm_lock);
661 mutex_init(&ibdev->cap_mask_mutex);
662
663 if (ib_register_device(&ibdev->ib_dev))
664 goto err_map;
665
666 if (mlx4_ib_mad_init(ibdev))
667 goto err_reg;
668
669 for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
670 if (device_create_file(&ibdev->ib_dev.dev,
671 mlx4_class_attributes[i]))
672 goto err_reg;
673 }
674
675 ibdev->ib_active = true;
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 ibdev->ib_active = false;
734 ibev.event = IB_EVENT_DEVICE_FATAL;
735 break;
736
737 default:
738 return;
739 }
740
741 ibev.device = ibdev_ptr;
742 ibev.element.port_num = port;
743
744 ib_dispatch_event(&ibev);
745 }
746
747 static struct mlx4_interface mlx4_ib_interface = {
748 .add = mlx4_ib_add,
749 .remove = mlx4_ib_remove,
750 .event = mlx4_ib_event
751 };
752
753 static int __init mlx4_ib_init(void)
754 {
755 return mlx4_register_interface(&mlx4_ib_interface);
756 }
757
758 static void __exit mlx4_ib_cleanup(void)
759 {
760 mlx4_unregister_interface(&mlx4_ib_interface);
761 }
762
763 module_init(mlx4_ib_init);
764 module_exit(mlx4_ib_cleanup);
Linux with added FPC-III support