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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx4 / sysfs.c
blobdb2ea31df8325175d764051849f55631134148b5
1 /*
2 * Copyright (c) 2012 Mellanox Technologies. 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 "core_priv.h"*/
34 #include "mlx4_ib.h"
35 #include <linux/slab.h>
36 #include <linux/string.h>
37 #include <linux/stat.h>
38
39 #include <rdma/ib_mad.h>
40 /*show_admin_alias_guid returns the administratively assigned value of that GUID.
41 * Values returned in buf parameter string:
42 * 0 - requests opensm to assign a value.
43 * ffffffffffffffff - delete this entry.
44 * other - value assigned by administrator.
45 */
46 static ssize_t show_admin_alias_guid(struct device *dev,
47 struct device_attribute *attr, char *buf)
48 {
49 int record_num;/*0-15*/
50 int guid_index_in_rec; /*0 - 7*/
51 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
52 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
53 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
54 struct mlx4_ib_dev *mdev = port->dev;
55
56 record_num = mlx4_ib_iov_dentry->entry_num / 8 ;
57 guid_index_in_rec = mlx4_ib_iov_dentry->entry_num % 8 ;
58
59 return sprintf(buf, "%llx\n",
60 be64_to_cpu(*(__be64 *)&mdev->sriov.alias_guid.
61 ports_guid[port->num - 1].
62 all_rec_per_port[record_num].
63 all_recs[8 * guid_index_in_rec]));
64 }
65
66 /* store_admin_alias_guid stores the (new) administratively assigned value of that GUID.
67 * Values in buf parameter string:
68 * 0 - requests opensm to assign a value.
69 * 0xffffffffffffffff - delete this entry.
70 * other - guid value assigned by the administrator.
71 */
72 static ssize_t store_admin_alias_guid(struct device *dev,
73 struct device_attribute *attr,
74 const char *buf, size_t count)
75 {
76 int record_num;/*0-15*/
77 int guid_index_in_rec; /*0 - 7*/
78 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
79 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
80 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
81 struct mlx4_ib_dev *mdev = port->dev;
82 u64 sysadmin_ag_val;
83
84 record_num = mlx4_ib_iov_dentry->entry_num / 8;
85 guid_index_in_rec = mlx4_ib_iov_dentry->entry_num % 8;
86 if (0 == record_num && 0 == guid_index_in_rec) {
87 pr_err("GUID 0 block 0 is RO\n");
88 return count;
89 }
90 sscanf(buf, "%llx", &sysadmin_ag_val);
91 *(__be64 *)&mdev->sriov.alias_guid.ports_guid[port->num - 1].
92 all_rec_per_port[record_num].
93 all_recs[GUID_REC_SIZE * guid_index_in_rec] =
94 cpu_to_be64(sysadmin_ag_val);
95
96 /* Change the state to be pending for update */
97 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].status
98 = MLX4_GUID_INFO_STATUS_IDLE ;
99
100 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].method
101 = MLX4_GUID_INFO_RECORD_SET;
102
103 switch (sysadmin_ag_val) {
104 case MLX4_GUID_FOR_DELETE_VAL:
105 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].method
106 = MLX4_GUID_INFO_RECORD_DELETE;
107 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].ownership
108 = MLX4_GUID_SYSADMIN_ASSIGN;
109 break;
110 /* The sysadmin requests the SM to re-assign */
111 case MLX4_NOT_SET_GUID:
112 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].ownership
113 = MLX4_GUID_DRIVER_ASSIGN;
114 break;
115 /* The sysadmin requests a specific value.*/
116 default:
117 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].ownership
118 = MLX4_GUID_SYSADMIN_ASSIGN;
119 break;
120 }
121
122 /* set the record index */
123 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].guid_indexes
124 = mlx4_ib_get_aguid_comp_mask_from_ix(guid_index_in_rec);
125
126 mlx4_ib_init_alias_guid_work(mdev, port->num - 1);
127
128 return count;
129 }
130
131 static ssize_t show_port_gid(struct device *dev,
132 struct device_attribute *attr,
133 char *buf)
134 {
135 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
136 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
137 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
138 struct mlx4_ib_dev *mdev = port->dev;
139 union ib_gid gid;
140 ssize_t ret;
141
142 ret = __mlx4_ib_query_gid(&mdev->ib_dev, port->num,
143 mlx4_ib_iov_dentry->entry_num, &gid, 1);
144 if (ret)
145 return ret;
146 ret = sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
147 be16_to_cpu(((__be16 *) gid.raw)[0]),
148 be16_to_cpu(((__be16 *) gid.raw)[1]),
149 be16_to_cpu(((__be16 *) gid.raw)[2]),
150 be16_to_cpu(((__be16 *) gid.raw)[3]),
151 be16_to_cpu(((__be16 *) gid.raw)[4]),
152 be16_to_cpu(((__be16 *) gid.raw)[5]),
153 be16_to_cpu(((__be16 *) gid.raw)[6]),
154 be16_to_cpu(((__be16 *) gid.raw)[7]));
155 return ret;
156 }
157
158 static ssize_t show_phys_port_pkey(struct device *dev,
159 struct device_attribute *attr,
160 char *buf)
161 {
162 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
163 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
164 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
165 struct mlx4_ib_dev *mdev = port->dev;
166 u16 pkey;
167 ssize_t ret;
168
169 ret = __mlx4_ib_query_pkey(&mdev->ib_dev, port->num,
170 mlx4_ib_iov_dentry->entry_num, &pkey, 1);
171 if (ret)
172 return ret;
173
174 return sprintf(buf, "0x%04x\n", pkey);
175 }
176
177 #define DENTRY_REMOVE(_dentry) \
178 do { \
179 sysfs_remove_file((_dentry)->kobj, &(_dentry)->dentry.attr); \
180 } while (0);
181
182 static int create_sysfs_entry(void *_ctx, struct mlx4_ib_iov_sysfs_attr *_dentry,
183 char *_name, struct kobject *_kobj,
184 ssize_t (*show)(struct device *dev,
185 struct device_attribute *attr,
186 char *buf),
187 ssize_t (*store)(struct device *dev,
188 struct device_attribute *attr,
189 const char *buf, size_t count)
190 )
191 {
192 int ret = 0;
193 struct mlx4_ib_iov_sysfs_attr *vdentry = _dentry;
194
195 vdentry->ctx = _ctx;
196 vdentry->dentry.show = show;
197 vdentry->dentry.store = store;
198 sysfs_attr_init(&vdentry->dentry.attr);
199 vdentry->dentry.attr.name = vdentry->name;
200 vdentry->dentry.attr.mode = 0;
201 vdentry->kobj = _kobj;
202 snprintf(vdentry->name, 15, "%s", _name);
203
204 if (vdentry->dentry.store)
205 vdentry->dentry.attr.mode |= S_IWUSR;
206
207 if (vdentry->dentry.show)
208 vdentry->dentry.attr.mode |= S_IRUGO;
209
210 ret = sysfs_create_file(vdentry->kobj, &vdentry->dentry.attr);
211 if (ret) {
212 pr_err("failed to create %s\n", vdentry->dentry.attr.name);
213 vdentry->ctx = NULL;
214 return ret;
215 }
216
217 return ret;
218 }
219
220 int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
221 struct attribute *attr)
222 {
223 struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
224 int ret;
225
226 ret = sysfs_create_file(port->mcgs_parent, attr);
227 if (ret)
228 pr_err("failed to create %s\n", attr->name);
229
230 return ret;
231 }
232
233 void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
234 struct attribute *attr)
235 {
236 struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
237
238 sysfs_remove_file(port->mcgs_parent, attr);
239 }
240
241 static int add_port_entries(struct mlx4_ib_dev *device, int port_num)
242 {
243 int i;
244 char buff[10];
245 struct mlx4_ib_iov_port *port = NULL;
246 int ret = 0 ;
247 struct ib_port_attr attr;
248
249 /* get the physical gid and pkey table sizes.*/
250 ret = __mlx4_ib_query_port(&device->ib_dev, port_num, &attr, 1);
251 if (ret)
252 goto err;
253
254 port = &device->iov_ports[port_num - 1];
255 port->dev = device;
256 port->num = port_num;
257 /* Directory structure:
258 * iov -
259 * port num -
260 * admin_guids
261 * gids (operational)
262 * mcg_table
263 */
264 port->dentr_ar = kzalloc(sizeof (struct mlx4_ib_iov_sysfs_attr_ar),
265 GFP_KERNEL);
266 if (!port->dentr_ar) {
267 ret = -ENOMEM;
268 goto err;
269 }
270 sprintf(buff, "%d", port_num);
271 port->cur_port = kobject_create_and_add(buff,
272 kobject_get(device->ports_parent));
273 if (!port->cur_port) {
274 ret = -ENOMEM;
275 goto kobj_create_err;
276 }
277 /* admin GUIDs */
278 port->admin_alias_parent = kobject_create_and_add("admin_guids",
279 kobject_get(port->cur_port));
280 if (!port->admin_alias_parent) {
281 ret = -ENOMEM;
282 goto err_admin_guids;
283 }
284 for (i = 0 ; i < attr.gid_tbl_len; i++) {
285 sprintf(buff, "%d", i);
286 port->dentr_ar->dentries[i].entry_num = i;
287 ret = create_sysfs_entry(port, &port->dentr_ar->dentries[i],
288 buff, port->admin_alias_parent,
289 show_admin_alias_guid, store_admin_alias_guid);
290 if (ret)
291 goto err_admin_alias_parent;
292 }
293
294 /* gids subdirectory (operational gids) */
295 port->gids_parent = kobject_create_and_add("gids",
296 kobject_get(port->cur_port));
297 if (!port->gids_parent) {
298 ret = -ENOMEM;
299 goto err_gids;
300 }
301
302 for (i = 0 ; i < attr.gid_tbl_len; i++) {
303 sprintf(buff, "%d", i);
304 port->dentr_ar->dentries[attr.gid_tbl_len + i].entry_num = i;
305 ret = create_sysfs_entry(port,
306 &port->dentr_ar->dentries[attr.gid_tbl_len + i],
307 buff,
308 port->gids_parent, show_port_gid, NULL);
309 if (ret)
310 goto err_gids_parent;
311 }
312
313 /* physical port pkey table */
314 port->pkeys_parent =
315 kobject_create_and_add("pkeys", kobject_get(port->cur_port));
316 if (!port->pkeys_parent) {
317 ret = -ENOMEM;
318 goto err_pkeys;
319 }
320
321 for (i = 0 ; i < attr.pkey_tbl_len; i++) {
322 sprintf(buff, "%d", i);
323 port->dentr_ar->dentries[2 * attr.gid_tbl_len + i].entry_num = i;
324 ret = create_sysfs_entry(port,
325 &port->dentr_ar->dentries[2 * attr.gid_tbl_len + i],
326 buff, port->pkeys_parent,
327 show_phys_port_pkey, NULL);
328 if (ret)
329 goto err_pkeys_parent;
330 }
331
332 /* MCGs table */
333 port->mcgs_parent =
334 kobject_create_and_add("mcgs", kobject_get(port->cur_port));
335 if (!port->mcgs_parent) {
336 ret = -ENOMEM;
337 goto err_mcgs;
338 }
339 return 0;
340
341 err_mcgs:
342 kobject_put(port->cur_port);
343
344 err_pkeys_parent:
345 kobject_put(port->pkeys_parent);
346
347 err_pkeys:
348 kobject_put(port->cur_port);
349
350 err_gids_parent:
351 kobject_put(port->gids_parent);
352
353 err_gids:
354 kobject_put(port->cur_port);
355
356 err_admin_alias_parent:
357 kobject_put(port->admin_alias_parent);
358
359 err_admin_guids:
360 kobject_put(port->cur_port);
361 kobject_put(port->cur_port); /* once more for create_and_add buff */
362
363 kobj_create_err:
364 kobject_put(device->ports_parent);
365 kfree(port->dentr_ar);
366
367 err:
368 pr_err("add_port_entries FAILED: for port:%d, error: %d\n",
369 port_num, ret);
370 return ret;
371 }
372
373 static void get_name(struct mlx4_ib_dev *dev, char *name, int i, int max)
374 {
375 char base_name[9];
376
377 /* pci_name format is: bus:dev:func -> xxxx:yy:zz.n */
378 strlcpy(name, pci_name(dev->dev->pdev), max);
379 strncpy(base_name, name, 8); /*till xxxx:yy:*/
380 base_name[8] = '\0';
381 /* with no ARI only 3 last bits are used so when the fn is higher than 8
382 * need to add it to the dev num, so count in the last number will be
383 * modulo 8 */
384 sprintf(name, "%s%.2d.%d", base_name, (i/8), (i%8));
385 }
386
387 struct mlx4_port {
388 struct kobject kobj;
389 struct mlx4_ib_dev *dev;
390 struct attribute_group pkey_group;
391 struct attribute_group gid_group;
392 u8 port_num;
393 int slave;
394 };
395
396
397 static void mlx4_port_release(struct kobject *kobj)
398 {
399 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
400 struct attribute *a;
401 int i;
402
403 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
404 kfree(a);
405 kfree(p->pkey_group.attrs);
406 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
407 kfree(a);
408 kfree(p->gid_group.attrs);
409 kfree(p);
410 }
411
412 struct port_attribute {
413 struct attribute attr;
414 ssize_t (*show)(struct mlx4_port *, struct port_attribute *, char *buf);
415 ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
416 const char *buf, size_t count);
417 };
418
419 static ssize_t port_attr_show(struct kobject *kobj,
420 struct attribute *attr, char *buf)
421 {
422 struct port_attribute *port_attr =
423 container_of(attr, struct port_attribute, attr);
424 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
425
426 if (!port_attr->show)
427 return -EIO;
428 return port_attr->show(p, port_attr, buf);
429 }
430
431 static ssize_t port_attr_store(struct kobject *kobj,
432 struct attribute *attr,
433 const char *buf, size_t size)
434 {
435 struct port_attribute *port_attr =
436 container_of(attr, struct port_attribute, attr);
437 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
438
439 if (!port_attr->store)
440 return -EIO;
441 return port_attr->store(p, port_attr, buf, size);
442 }
443
444 static const struct sysfs_ops port_sysfs_ops = {
445 .show = port_attr_show,
446 .store = port_attr_store,
447 };
448
449 static struct kobj_type port_type = {
450 .release = mlx4_port_release,
451 .sysfs_ops = &port_sysfs_ops,
452 };
453
454 struct port_table_attribute {
455 struct port_attribute attr;
456 char name[8];
457 int index;
458 };
459
460 static ssize_t show_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
461 char *buf)
462 {
463 struct port_table_attribute *tab_attr =
464 container_of(attr, struct port_table_attribute, attr);
465 ssize_t ret = -ENODEV;
466
467 if (p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1][tab_attr->index] >=
468 (p->dev->dev->caps.pkey_table_len[p->port_num]))
469 ret = sprintf(buf, "none\n");
470 else
471 ret = sprintf(buf, "%d\n",
472 p->dev->pkeys.virt2phys_pkey[p->slave]
473 [p->port_num - 1][tab_attr->index]);
474 return ret;
475 }
476
477 static ssize_t store_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
478 const char *buf, size_t count)
479 {
480 struct port_table_attribute *tab_attr =
481 container_of(attr, struct port_table_attribute, attr);
482 int idx;
483 int err;
484
485 /* do not allow remapping Dom0 virtual pkey table */
486 if (p->slave == mlx4_master_func_num(p->dev->dev))
487 return -EINVAL;
488
489 if (!strncasecmp(buf, "no", 2))
490 idx = p->dev->dev->phys_caps.pkey_phys_table_len[p->port_num] - 1;
491 else if (sscanf(buf, "%i", &idx) != 1 ||
492 idx >= p->dev->dev->caps.pkey_table_len[p->port_num] ||
493 idx < 0)
494 return -EINVAL;
495
496 p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1]
497 [tab_attr->index] = idx;
498 mlx4_sync_pkey_table(p->dev->dev, p->slave, p->port_num,
499 tab_attr->index, idx);
500 err = mlx4_gen_pkey_eqe(p->dev->dev, p->slave, p->port_num);
501 if (err) {
502 pr_err("mlx4_gen_pkey_eqe failed for slave %d,"
503 " port %d, index %d\n", p->slave, p->port_num, idx);
504 return err;
505 }
506 return count;
507 }
508
509 static ssize_t show_port_gid_idx(struct mlx4_port *p,
510 struct port_attribute *attr, char *buf)
511 {
512 return sprintf(buf, "%d\n", p->slave);
513 }
514
515 static struct attribute **
516 alloc_group_attrs(ssize_t (*show)(struct mlx4_port *,
517 struct port_attribute *, char *buf),
518 ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
519 const char *buf, size_t count),
520 int len)
521 {
522 struct attribute **tab_attr;
523 struct port_table_attribute *element;
524 int i;
525
526 tab_attr = kcalloc(1 + len, sizeof (struct attribute *), GFP_KERNEL);
527 if (!tab_attr)
528 return NULL;
529
530 for (i = 0; i < len; i++) {
531 element = kzalloc(sizeof (struct port_table_attribute),
532 GFP_KERNEL);
533 if (!element)
534 goto err;
535 if (snprintf(element->name, sizeof (element->name),
536 "%d", i) >= sizeof (element->name)) {
537 kfree(element);
538 goto err;
539 }
540 sysfs_attr_init(&element->attr.attr);
541 element->attr.attr.name = element->name;
542 if (store) {
543 element->attr.attr.mode = S_IWUSR | S_IRUGO;
544 element->attr.store = store;
545 } else
546 element->attr.attr.mode = S_IRUGO;
547
548 element->attr.show = show;
549 element->index = i;
550 tab_attr[i] = &element->attr.attr;
551 }
552 return tab_attr;
553
554 err:
555 while (--i >= 0)
556 kfree(tab_attr[i]);
557 kfree(tab_attr);
558 return NULL;
559 }
560
561 static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave)
562 {
563 struct mlx4_port *p;
564 int i;
565 int ret;
566
567 p = kzalloc(sizeof *p, GFP_KERNEL);
568 if (!p)
569 return -ENOMEM;
570
571 p->dev = dev;
572 p->port_num = port_num;
573 p->slave = slave;
574
575 ret = kobject_init_and_add(&p->kobj, &port_type,
576 kobject_get(dev->dev_ports_parent[slave]),
577 "%d", port_num);
578 if (ret)
579 goto err_alloc;
580
581 p->pkey_group.name = "pkey_idx";
582 p->pkey_group.attrs =
583 alloc_group_attrs(show_port_pkey, store_port_pkey,
584 dev->dev->caps.pkey_table_len[port_num]);
585 if (!p->pkey_group.attrs) {
586 ret = -ENOMEM;
587 goto err_alloc;
588 }
589
590 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
591 if (ret)
592 goto err_free_pkey;
593
594 p->gid_group.name = "gid_idx";
595 p->gid_group.attrs = alloc_group_attrs(show_port_gid_idx, NULL, 1);
596 if (!p->gid_group.attrs) {
597 ret = -ENOMEM;
598 goto err_free_pkey;
599 }
600
601 ret = sysfs_create_group(&p->kobj, &p->gid_group);
602 if (ret)
603 goto err_free_gid;
604
605 list_add_tail(&p->kobj.entry, &dev->pkeys.pkey_port_list[slave]);
606 return 0;
607
608 err_free_gid:
609 kfree(p->gid_group.attrs[0]);
610 kfree(p->gid_group.attrs);
611
612 err_free_pkey:
613 for (i = 0; i < dev->dev->caps.pkey_table_len[port_num]; ++i)
614 kfree(p->pkey_group.attrs[i]);
615 kfree(p->pkey_group.attrs);
616
617 err_alloc:
618 kobject_put(dev->dev_ports_parent[slave]);
619 kfree(p);
620 return ret;
621 }
622
623 static int register_one_pkey_tree(struct mlx4_ib_dev *dev, int slave)
624 {
625 char name[32];
626 int err;
627 int port;
628 struct kobject *p, *t;
629 struct mlx4_port *mport;
630
631 get_name(dev, name, slave, sizeof name);
632
633 dev->pkeys.device_parent[slave] =
634 kobject_create_and_add(name, kobject_get(dev->iov_parent));
635
636 if (!dev->pkeys.device_parent[slave]) {
637 err = -ENOMEM;
638 goto fail_dev;
639 }
640
641 INIT_LIST_HEAD(&dev->pkeys.pkey_port_list[slave]);
642
643 dev->dev_ports_parent[slave] =
644 kobject_create_and_add("ports",
645 kobject_get(dev->pkeys.device_parent[slave]));
646
647 if (!dev->dev_ports_parent[slave]) {
648 err = -ENOMEM;
649 goto err_ports;
650 }
651
652 for (port = 1; port <= dev->dev->caps.num_ports; ++port) {
653 err = add_port(dev, port, slave);
654 if (err)
655 goto err_add;
656 }
657 return 0;
658
659 err_add:
660 list_for_each_entry_safe(p, t,
661 &dev->pkeys.pkey_port_list[slave],
662 entry) {
663 list_del(&p->entry);
664 mport = container_of(p, struct mlx4_port, kobj);
665 sysfs_remove_group(p, &mport->pkey_group);
666 sysfs_remove_group(p, &mport->gid_group);
667 kobject_put(p);
668 }
669 kobject_put(dev->dev_ports_parent[slave]);
670
671 err_ports:
672 kobject_put(dev->pkeys.device_parent[slave]);
673 /* extra put for the device_parent create_and_add */
674 kobject_put(dev->pkeys.device_parent[slave]);
675
676 fail_dev:
677 kobject_put(dev->iov_parent);
678 return err;
679 }
680
681 static int register_pkey_tree(struct mlx4_ib_dev *device)
682 {
683 int i;
684
685 if (!mlx4_is_master(device->dev))
686 return 0;
687
688 for (i = 0; i <= device->dev->num_vfs; ++i)
689 register_one_pkey_tree(device, i);
690
691 return 0;
692 }
693
694 static void unregister_pkey_tree(struct mlx4_ib_dev *device)
695 {
696 int slave;
697 struct kobject *p, *t;
698 struct mlx4_port *port;
699
700 if (!mlx4_is_master(device->dev))
701 return;
702
703 for (slave = device->dev->num_vfs; slave >= 0; --slave) {
704 list_for_each_entry_safe(p, t,
705 &device->pkeys.pkey_port_list[slave],
706 entry) {
707 list_del(&p->entry);
708 port = container_of(p, struct mlx4_port, kobj);
709 sysfs_remove_group(p, &port->pkey_group);
710 sysfs_remove_group(p, &port->gid_group);
711 kobject_put(p);
712 kobject_put(device->dev_ports_parent[slave]);
713 }
714 kobject_put(device->dev_ports_parent[slave]);
715 kobject_put(device->pkeys.device_parent[slave]);
716 kobject_put(device->pkeys.device_parent[slave]);
717 kobject_put(device->iov_parent);
718 }
719 }
720
721 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *dev)
722 {
723 int i;
724 int ret = 0;
725
726 if (!mlx4_is_master(dev->dev))
727 return 0;
728
729 dev->iov_parent =
730 kobject_create_and_add("iov",
731 kobject_get(dev->ib_dev.ports_parent->parent));
732 if (!dev->iov_parent) {
733 ret = -ENOMEM;
734 goto err;
735 }
736 dev->ports_parent =
737 kobject_create_and_add("ports",
738 kobject_get(dev->iov_parent));
739 if (!dev->ports_parent) {
740 ret = -ENOMEM;
741 goto err_ports;
742 }
743
744 for (i = 1; i <= dev->ib_dev.phys_port_cnt; ++i) {
745 ret = add_port_entries(dev, i);
746 if (ret)
747 goto err_add_entries;
748 }
749
750 ret = register_pkey_tree(dev);
751 if (ret)
752 goto err_add_entries;
753 return 0;
754
755 err_add_entries:
756 kobject_put(dev->ports_parent);
757
758 err_ports:
759 kobject_put(dev->iov_parent);
760 err:
761 kobject_put(dev->ib_dev.ports_parent->parent);
762 pr_err("mlx4_ib_device_register_sysfs error (%d)\n", ret);
763 return ret;
764 }
765
766 static void unregister_alias_guid_tree(struct mlx4_ib_dev *device)
767 {
768 struct mlx4_ib_iov_port *p;
769 int i;
770
771 if (!mlx4_is_master(device->dev))
772 return;
773
774 for (i = 0; i < device->dev->caps.num_ports; i++) {
775 p = &device->iov_ports[i];
776 kobject_put(p->admin_alias_parent);
777 kobject_put(p->gids_parent);
778 kobject_put(p->pkeys_parent);
779 kobject_put(p->mcgs_parent);
780 kobject_put(p->cur_port);
781 kobject_put(p->cur_port);
782 kobject_put(p->cur_port);
783 kobject_put(p->cur_port);
784 kobject_put(p->cur_port);
785 kobject_put(p->dev->ports_parent);
786 kfree(p->dentr_ar);
787 }
788 }
789
790 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device)
791 {
792 unregister_alias_guid_tree(device);
793 unregister_pkey_tree(device);
794 kobject_put(device->ports_parent);
795 kobject_put(device->iov_parent);
796 kobject_put(device->iov_parent);
797 kobject_put(device->ib_dev.ports_parent->parent);
798 }
Linux with added FPC-III support