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x86/topology: Fix function name in documentation
[cris-mirror.git] / drivers / infiniband / hw / mlx4 / sysfs.c
blobe219093d2764536a58c7c362a08167361ed0e93a
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 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
50 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
51 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
52 struct mlx4_ib_dev *mdev = port->dev;
53 __be64 sysadmin_ag_val;
54
55 sysadmin_ag_val = mlx4_get_admin_guid(mdev->dev,
56 mlx4_ib_iov_dentry->entry_num,
57 port->num);
58
59 return sprintf(buf, "%llx\n", be64_to_cpu(sysadmin_ag_val));
60 }
61
62 /* store_admin_alias_guid stores the (new) administratively assigned value of that GUID.
63 * Values in buf parameter string:
64 * 0 - requests opensm to assign a value.
65 * 0xffffffffffffffff - delete this entry.
66 * other - guid value assigned by the administrator.
67 */
68 static ssize_t store_admin_alias_guid(struct device *dev,
69 struct device_attribute *attr,
70 const char *buf, size_t count)
71 {
72 int record_num;/*0-15*/
73 int guid_index_in_rec; /*0 - 7*/
74 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
75 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
76 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
77 struct mlx4_ib_dev *mdev = port->dev;
78 u64 sysadmin_ag_val;
79 unsigned long flags;
80
81 record_num = mlx4_ib_iov_dentry->entry_num / 8;
82 guid_index_in_rec = mlx4_ib_iov_dentry->entry_num % 8;
83 if (0 == record_num && 0 == guid_index_in_rec) {
84 pr_err("GUID 0 block 0 is RO\n");
85 return count;
86 }
87 spin_lock_irqsave(&mdev->sriov.alias_guid.ag_work_lock, flags);
88 sscanf(buf, "%llx", &sysadmin_ag_val);
89 *(__be64 *)&mdev->sriov.alias_guid.ports_guid[port->num - 1].
90 all_rec_per_port[record_num].
91 all_recs[GUID_REC_SIZE * guid_index_in_rec] =
92 cpu_to_be64(sysadmin_ag_val);
93
94 /* Change the state to be pending for update */
95 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].status
96 = MLX4_GUID_INFO_STATUS_IDLE ;
97 mlx4_set_admin_guid(mdev->dev, cpu_to_be64(sysadmin_ag_val),
98 mlx4_ib_iov_dentry->entry_num,
99 port->num);
100
101 /* set the record index */
102 mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].guid_indexes
103 |= mlx4_ib_get_aguid_comp_mask_from_ix(guid_index_in_rec);
104
105 spin_unlock_irqrestore(&mdev->sriov.alias_guid.ag_work_lock, flags);
106 mlx4_ib_init_alias_guid_work(mdev, port->num - 1);
107
108 return count;
109 }
110
111 static ssize_t show_port_gid(struct device *dev,
112 struct device_attribute *attr,
113 char *buf)
114 {
115 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
116 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
117 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
118 struct mlx4_ib_dev *mdev = port->dev;
119 union ib_gid gid;
120 ssize_t ret;
121
122 ret = __mlx4_ib_query_gid(&mdev->ib_dev, port->num,
123 mlx4_ib_iov_dentry->entry_num, &gid, 1);
124 if (ret)
125 return ret;
126 ret = sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
127 be16_to_cpu(((__be16 *) gid.raw)[0]),
128 be16_to_cpu(((__be16 *) gid.raw)[1]),
129 be16_to_cpu(((__be16 *) gid.raw)[2]),
130 be16_to_cpu(((__be16 *) gid.raw)[3]),
131 be16_to_cpu(((__be16 *) gid.raw)[4]),
132 be16_to_cpu(((__be16 *) gid.raw)[5]),
133 be16_to_cpu(((__be16 *) gid.raw)[6]),
134 be16_to_cpu(((__be16 *) gid.raw)[7]));
135 return ret;
136 }
137
138 static ssize_t show_phys_port_pkey(struct device *dev,
139 struct device_attribute *attr,
140 char *buf)
141 {
142 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
143 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
144 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
145 struct mlx4_ib_dev *mdev = port->dev;
146 u16 pkey;
147 ssize_t ret;
148
149 ret = __mlx4_ib_query_pkey(&mdev->ib_dev, port->num,
150 mlx4_ib_iov_dentry->entry_num, &pkey, 1);
151 if (ret)
152 return ret;
153
154 return sprintf(buf, "0x%04x\n", pkey);
155 }
156
157 #define DENTRY_REMOVE(_dentry) \
158 do { \
159 sysfs_remove_file((_dentry)->kobj, &(_dentry)->dentry.attr); \
160 } while (0);
161
162 static int create_sysfs_entry(void *_ctx, struct mlx4_ib_iov_sysfs_attr *_dentry,
163 char *_name, struct kobject *_kobj,
164 ssize_t (*show)(struct device *dev,
165 struct device_attribute *attr,
166 char *buf),
167 ssize_t (*store)(struct device *dev,
168 struct device_attribute *attr,
169 const char *buf, size_t count)
170 )
171 {
172 int ret = 0;
173 struct mlx4_ib_iov_sysfs_attr *vdentry = _dentry;
174
175 vdentry->ctx = _ctx;
176 vdentry->dentry.show = show;
177 vdentry->dentry.store = store;
178 sysfs_attr_init(&vdentry->dentry.attr);
179 vdentry->dentry.attr.name = vdentry->name;
180 vdentry->dentry.attr.mode = 0;
181 vdentry->kobj = _kobj;
182 snprintf(vdentry->name, 15, "%s", _name);
183
184 if (vdentry->dentry.store)
185 vdentry->dentry.attr.mode |= S_IWUSR;
186
187 if (vdentry->dentry.show)
188 vdentry->dentry.attr.mode |= S_IRUGO;
189
190 ret = sysfs_create_file(vdentry->kobj, &vdentry->dentry.attr);
191 if (ret) {
192 pr_err("failed to create %s\n", vdentry->dentry.attr.name);
193 vdentry->ctx = NULL;
194 return ret;
195 }
196
197 return ret;
198 }
199
200 int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
201 struct attribute *attr)
202 {
203 struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
204 int ret;
205
206 ret = sysfs_create_file(port->mcgs_parent, attr);
207 if (ret)
208 pr_err("failed to create %s\n", attr->name);
209
210 return ret;
211 }
212
213 void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
214 struct attribute *attr)
215 {
216 struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
217
218 sysfs_remove_file(port->mcgs_parent, attr);
219 }
220
221 static int add_port_entries(struct mlx4_ib_dev *device, int port_num)
222 {
223 int i;
224 char buff[11];
225 struct mlx4_ib_iov_port *port = NULL;
226 int ret = 0 ;
227 struct ib_port_attr attr;
228
229 memset(&attr, 0, sizeof(attr));
230 /* get the physical gid and pkey table sizes.*/
231 ret = __mlx4_ib_query_port(&device->ib_dev, port_num, &attr, 1);
232 if (ret)
233 goto err;
234
235 port = &device->iov_ports[port_num - 1];
236 port->dev = device;
237 port->num = port_num;
238 /* Directory structure:
239 * iov -
240 * port num -
241 * admin_guids
242 * gids (operational)
243 * mcg_table
244 */
245 port->dentr_ar = kzalloc(sizeof (struct mlx4_ib_iov_sysfs_attr_ar),
246 GFP_KERNEL);
247 if (!port->dentr_ar) {
248 ret = -ENOMEM;
249 goto err;
250 }
251 sprintf(buff, "%d", port_num);
252 port->cur_port = kobject_create_and_add(buff,
253 kobject_get(device->ports_parent));
254 if (!port->cur_port) {
255 ret = -ENOMEM;
256 goto kobj_create_err;
257 }
258 /* admin GUIDs */
259 port->admin_alias_parent = kobject_create_and_add("admin_guids",
260 kobject_get(port->cur_port));
261 if (!port->admin_alias_parent) {
262 ret = -ENOMEM;
263 goto err_admin_guids;
264 }
265 for (i = 0 ; i < attr.gid_tbl_len; i++) {
266 sprintf(buff, "%d", i);
267 port->dentr_ar->dentries[i].entry_num = i;
268 ret = create_sysfs_entry(port, &port->dentr_ar->dentries[i],
269 buff, port->admin_alias_parent,
270 show_admin_alias_guid, store_admin_alias_guid);
271 if (ret)
272 goto err_admin_alias_parent;
273 }
274
275 /* gids subdirectory (operational gids) */
276 port->gids_parent = kobject_create_and_add("gids",
277 kobject_get(port->cur_port));
278 if (!port->gids_parent) {
279 ret = -ENOMEM;
280 goto err_gids;
281 }
282
283 for (i = 0 ; i < attr.gid_tbl_len; i++) {
284 sprintf(buff, "%d", i);
285 port->dentr_ar->dentries[attr.gid_tbl_len + i].entry_num = i;
286 ret = create_sysfs_entry(port,
287 &port->dentr_ar->dentries[attr.gid_tbl_len + i],
288 buff,
289 port->gids_parent, show_port_gid, NULL);
290 if (ret)
291 goto err_gids_parent;
292 }
293
294 /* physical port pkey table */
295 port->pkeys_parent =
296 kobject_create_and_add("pkeys", kobject_get(port->cur_port));
297 if (!port->pkeys_parent) {
298 ret = -ENOMEM;
299 goto err_pkeys;
300 }
301
302 for (i = 0 ; i < attr.pkey_tbl_len; i++) {
303 sprintf(buff, "%d", i);
304 port->dentr_ar->dentries[2 * attr.gid_tbl_len + i].entry_num = i;
305 ret = create_sysfs_entry(port,
306 &port->dentr_ar->dentries[2 * attr.gid_tbl_len + i],
307 buff, port->pkeys_parent,
308 show_phys_port_pkey, NULL);
309 if (ret)
310 goto err_pkeys_parent;
311 }
312
313 /* MCGs table */
314 port->mcgs_parent =
315 kobject_create_and_add("mcgs", kobject_get(port->cur_port));
316 if (!port->mcgs_parent) {
317 ret = -ENOMEM;
318 goto err_mcgs;
319 }
320 return 0;
321
322 err_mcgs:
323 kobject_put(port->cur_port);
324
325 err_pkeys_parent:
326 kobject_put(port->pkeys_parent);
327
328 err_pkeys:
329 kobject_put(port->cur_port);
330
331 err_gids_parent:
332 kobject_put(port->gids_parent);
333
334 err_gids:
335 kobject_put(port->cur_port);
336
337 err_admin_alias_parent:
338 kobject_put(port->admin_alias_parent);
339
340 err_admin_guids:
341 kobject_put(port->cur_port);
342 kobject_put(port->cur_port); /* once more for create_and_add buff */
343
344 kobj_create_err:
345 kobject_put(device->ports_parent);
346 kfree(port->dentr_ar);
347
348 err:
349 pr_err("add_port_entries FAILED: for port:%d, error: %d\n",
350 port_num, ret);
351 return ret;
352 }
353
354 static void get_name(struct mlx4_ib_dev *dev, char *name, int i, int max)
355 {
356 char base_name[9];
357
358 /* pci_name format is: bus:dev:func -> xxxx:yy:zz.n */
359 strlcpy(name, pci_name(dev->dev->persist->pdev), max);
360 strncpy(base_name, name, 8); /*till xxxx:yy:*/
361 base_name[8] = '\0';
362 /* with no ARI only 3 last bits are used so when the fn is higher than 8
363 * need to add it to the dev num, so count in the last number will be
364 * modulo 8 */
365 sprintf(name, "%s%.2d.%d", base_name, (i/8), (i%8));
366 }
367
368 struct mlx4_port {
369 struct kobject kobj;
370 struct mlx4_ib_dev *dev;
371 struct attribute_group pkey_group;
372 struct attribute_group gid_group;
373 struct device_attribute enable_smi_admin;
374 struct device_attribute smi_enabled;
375 int slave;
376 u8 port_num;
377 };
378
379
380 static void mlx4_port_release(struct kobject *kobj)
381 {
382 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
383 struct attribute *a;
384 int i;
385
386 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
387 kfree(a);
388 kfree(p->pkey_group.attrs);
389 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
390 kfree(a);
391 kfree(p->gid_group.attrs);
392 kfree(p);
393 }
394
395 struct port_attribute {
396 struct attribute attr;
397 ssize_t (*show)(struct mlx4_port *, struct port_attribute *, char *buf);
398 ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
399 const char *buf, size_t count);
400 };
401
402 static ssize_t port_attr_show(struct kobject *kobj,
403 struct attribute *attr, char *buf)
404 {
405 struct port_attribute *port_attr =
406 container_of(attr, struct port_attribute, attr);
407 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
408
409 if (!port_attr->show)
410 return -EIO;
411 return port_attr->show(p, port_attr, buf);
412 }
413
414 static ssize_t port_attr_store(struct kobject *kobj,
415 struct attribute *attr,
416 const char *buf, size_t size)
417 {
418 struct port_attribute *port_attr =
419 container_of(attr, struct port_attribute, attr);
420 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
421
422 if (!port_attr->store)
423 return -EIO;
424 return port_attr->store(p, port_attr, buf, size);
425 }
426
427 static const struct sysfs_ops port_sysfs_ops = {
428 .show = port_attr_show,
429 .store = port_attr_store,
430 };
431
432 static struct kobj_type port_type = {
433 .release = mlx4_port_release,
434 .sysfs_ops = &port_sysfs_ops,
435 };
436
437 struct port_table_attribute {
438 struct port_attribute attr;
439 char name[8];
440 int index;
441 };
442
443 static ssize_t show_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
444 char *buf)
445 {
446 struct port_table_attribute *tab_attr =
447 container_of(attr, struct port_table_attribute, attr);
448 ssize_t ret = -ENODEV;
449
450 if (p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1][tab_attr->index] >=
451 (p->dev->dev->caps.pkey_table_len[p->port_num]))
452 ret = sprintf(buf, "none\n");
453 else
454 ret = sprintf(buf, "%d\n",
455 p->dev->pkeys.virt2phys_pkey[p->slave]
456 [p->port_num - 1][tab_attr->index]);
457 return ret;
458 }
459
460 static ssize_t store_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
461 const char *buf, size_t count)
462 {
463 struct port_table_attribute *tab_attr =
464 container_of(attr, struct port_table_attribute, attr);
465 int idx;
466 int err;
467
468 /* do not allow remapping Dom0 virtual pkey table */
469 if (p->slave == mlx4_master_func_num(p->dev->dev))
470 return -EINVAL;
471
472 if (!strncasecmp(buf, "no", 2))
473 idx = p->dev->dev->phys_caps.pkey_phys_table_len[p->port_num] - 1;
474 else if (sscanf(buf, "%i", &idx) != 1 ||
475 idx >= p->dev->dev->caps.pkey_table_len[p->port_num] ||
476 idx < 0)
477 return -EINVAL;
478
479 p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1]
480 [tab_attr->index] = idx;
481 mlx4_sync_pkey_table(p->dev->dev, p->slave, p->port_num,
482 tab_attr->index, idx);
483 err = mlx4_gen_pkey_eqe(p->dev->dev, p->slave, p->port_num);
484 if (err) {
485 pr_err("mlx4_gen_pkey_eqe failed for slave %d,"
486 " port %d, index %d\n", p->slave, p->port_num, idx);
487 return err;
488 }
489 return count;
490 }
491
492 static ssize_t show_port_gid_idx(struct mlx4_port *p,
493 struct port_attribute *attr, char *buf)
494 {
495 return sprintf(buf, "%d\n", p->slave);
496 }
497
498 static struct attribute **
499 alloc_group_attrs(ssize_t (*show)(struct mlx4_port *,
500 struct port_attribute *, char *buf),
501 ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
502 const char *buf, size_t count),
503 int len)
504 {
505 struct attribute **tab_attr;
506 struct port_table_attribute *element;
507 int i;
508
509 tab_attr = kcalloc(1 + len, sizeof (struct attribute *), GFP_KERNEL);
510 if (!tab_attr)
511 return NULL;
512
513 for (i = 0; i < len; i++) {
514 element = kzalloc(sizeof (struct port_table_attribute),
515 GFP_KERNEL);
516 if (!element)
517 goto err;
518 if (snprintf(element->name, sizeof (element->name),
519 "%d", i) >= sizeof (element->name)) {
520 kfree(element);
521 goto err;
522 }
523 sysfs_attr_init(&element->attr.attr);
524 element->attr.attr.name = element->name;
525 if (store) {
526 element->attr.attr.mode = S_IWUSR | S_IRUGO;
527 element->attr.store = store;
528 } else
529 element->attr.attr.mode = S_IRUGO;
530
531 element->attr.show = show;
532 element->index = i;
533 tab_attr[i] = &element->attr.attr;
534 }
535 return tab_attr;
536
537 err:
538 while (--i >= 0)
539 kfree(tab_attr[i]);
540 kfree(tab_attr);
541 return NULL;
542 }
543
544 static ssize_t sysfs_show_smi_enabled(struct device *dev,
545 struct device_attribute *attr, char *buf)
546 {
547 struct mlx4_port *p =
548 container_of(attr, struct mlx4_port, smi_enabled);
549 ssize_t len = 0;
550
551 if (mlx4_vf_smi_enabled(p->dev->dev, p->slave, p->port_num))
552 len = sprintf(buf, "%d\n", 1);
553 else
554 len = sprintf(buf, "%d\n", 0);
555
556 return len;
557 }
558
559 static ssize_t sysfs_show_enable_smi_admin(struct device *dev,
560 struct device_attribute *attr,
561 char *buf)
562 {
563 struct mlx4_port *p =
564 container_of(attr, struct mlx4_port, enable_smi_admin);
565 ssize_t len = 0;
566
567 if (mlx4_vf_get_enable_smi_admin(p->dev->dev, p->slave, p->port_num))
568 len = sprintf(buf, "%d\n", 1);
569 else
570 len = sprintf(buf, "%d\n", 0);
571
572 return len;
573 }
574
575 static ssize_t sysfs_store_enable_smi_admin(struct device *dev,
576 struct device_attribute *attr,
577 const char *buf, size_t count)
578 {
579 struct mlx4_port *p =
580 container_of(attr, struct mlx4_port, enable_smi_admin);
581 int enable;
582
583 if (sscanf(buf, "%i", &enable) != 1 ||
584 enable < 0 || enable > 1)
585 return -EINVAL;
586
587 if (mlx4_vf_set_enable_smi_admin(p->dev->dev, p->slave, p->port_num, enable))
588 return -EINVAL;
589 return count;
590 }
591
592 static int add_vf_smi_entries(struct mlx4_port *p)
593 {
594 int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
595 IB_LINK_LAYER_ETHERNET;
596 int ret;
597
598 /* do not display entries if eth transport, or if master */
599 if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
600 return 0;
601
602 sysfs_attr_init(&p->smi_enabled.attr);
603 p->smi_enabled.show = sysfs_show_smi_enabled;
604 p->smi_enabled.store = NULL;
605 p->smi_enabled.attr.name = "smi_enabled";
606 p->smi_enabled.attr.mode = 0444;
607 ret = sysfs_create_file(&p->kobj, &p->smi_enabled.attr);
608 if (ret) {
609 pr_err("failed to create smi_enabled\n");
610 return ret;
611 }
612
613 sysfs_attr_init(&p->enable_smi_admin.attr);
614 p->enable_smi_admin.show = sysfs_show_enable_smi_admin;
615 p->enable_smi_admin.store = sysfs_store_enable_smi_admin;
616 p->enable_smi_admin.attr.name = "enable_smi_admin";
617 p->enable_smi_admin.attr.mode = 0644;
618 ret = sysfs_create_file(&p->kobj, &p->enable_smi_admin.attr);
619 if (ret) {
620 pr_err("failed to create enable_smi_admin\n");
621 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
622 return ret;
623 }
624 return 0;
625 }
626
627 static void remove_vf_smi_entries(struct mlx4_port *p)
628 {
629 int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
630 IB_LINK_LAYER_ETHERNET;
631
632 if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
633 return;
634
635 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
636 sysfs_remove_file(&p->kobj, &p->enable_smi_admin.attr);
637 }
638
639 static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave)
640 {
641 struct mlx4_port *p;
642 int i;
643 int ret;
644 int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port_num) ==
645 IB_LINK_LAYER_ETHERNET;
646
647 p = kzalloc(sizeof *p, GFP_KERNEL);
648 if (!p)
649 return -ENOMEM;
650
651 p->dev = dev;
652 p->port_num = port_num;
653 p->slave = slave;
654
655 ret = kobject_init_and_add(&p->kobj, &port_type,
656 kobject_get(dev->dev_ports_parent[slave]),
657 "%d", port_num);
658 if (ret)
659 goto err_alloc;
660
661 p->pkey_group.name = "pkey_idx";
662 p->pkey_group.attrs =
663 alloc_group_attrs(show_port_pkey,
664 is_eth ? NULL : store_port_pkey,
665 dev->dev->caps.pkey_table_len[port_num]);
666 if (!p->pkey_group.attrs) {
667 ret = -ENOMEM;
668 goto err_alloc;
669 }
670
671 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
672 if (ret)
673 goto err_free_pkey;
674
675 p->gid_group.name = "gid_idx";
676 p->gid_group.attrs = alloc_group_attrs(show_port_gid_idx, NULL, 1);
677 if (!p->gid_group.attrs) {
678 ret = -ENOMEM;
679 goto err_free_pkey;
680 }
681
682 ret = sysfs_create_group(&p->kobj, &p->gid_group);
683 if (ret)
684 goto err_free_gid;
685
686 ret = add_vf_smi_entries(p);
687 if (ret)
688 goto err_free_gid;
689
690 list_add_tail(&p->kobj.entry, &dev->pkeys.pkey_port_list[slave]);
691 return 0;
692
693 err_free_gid:
694 kfree(p->gid_group.attrs[0]);
695 kfree(p->gid_group.attrs);
696
697 err_free_pkey:
698 for (i = 0; i < dev->dev->caps.pkey_table_len[port_num]; ++i)
699 kfree(p->pkey_group.attrs[i]);
700 kfree(p->pkey_group.attrs);
701
702 err_alloc:
703 kobject_put(dev->dev_ports_parent[slave]);
704 kfree(p);
705 return ret;
706 }
707
708 static int register_one_pkey_tree(struct mlx4_ib_dev *dev, int slave)
709 {
710 char name[32];
711 int err;
712 int port;
713 struct kobject *p, *t;
714 struct mlx4_port *mport;
715 struct mlx4_active_ports actv_ports;
716
717 get_name(dev, name, slave, sizeof name);
718
719 dev->pkeys.device_parent[slave] =
720 kobject_create_and_add(name, kobject_get(dev->iov_parent));
721
722 if (!dev->pkeys.device_parent[slave]) {
723 err = -ENOMEM;
724 goto fail_dev;
725 }
726
727 INIT_LIST_HEAD(&dev->pkeys.pkey_port_list[slave]);
728
729 dev->dev_ports_parent[slave] =
730 kobject_create_and_add("ports",
731 kobject_get(dev->pkeys.device_parent[slave]));
732
733 if (!dev->dev_ports_parent[slave]) {
734 err = -ENOMEM;
735 goto err_ports;
736 }
737
738 actv_ports = mlx4_get_active_ports(dev->dev, slave);
739
740 for (port = 1; port <= dev->dev->caps.num_ports; ++port) {
741 if (!test_bit(port - 1, actv_ports.ports))
742 continue;
743 err = add_port(dev, port, slave);
744 if (err)
745 goto err_add;
746 }
747 return 0;
748
749 err_add:
750 list_for_each_entry_safe(p, t,
751 &dev->pkeys.pkey_port_list[slave],
752 entry) {
753 list_del(&p->entry);
754 mport = container_of(p, struct mlx4_port, kobj);
755 sysfs_remove_group(p, &mport->pkey_group);
756 sysfs_remove_group(p, &mport->gid_group);
757 remove_vf_smi_entries(mport);
758 kobject_put(p);
759 }
760 kobject_put(dev->dev_ports_parent[slave]);
761
762 err_ports:
763 kobject_put(dev->pkeys.device_parent[slave]);
764 /* extra put for the device_parent create_and_add */
765 kobject_put(dev->pkeys.device_parent[slave]);
766
767 fail_dev:
768 kobject_put(dev->iov_parent);
769 return err;
770 }
771
772 static int register_pkey_tree(struct mlx4_ib_dev *device)
773 {
774 int i;
775
776 if (!mlx4_is_master(device->dev))
777 return 0;
778
779 for (i = 0; i <= device->dev->persist->num_vfs; ++i)
780 register_one_pkey_tree(device, i);
781
782 return 0;
783 }
784
785 static void unregister_pkey_tree(struct mlx4_ib_dev *device)
786 {
787 int slave;
788 struct kobject *p, *t;
789 struct mlx4_port *port;
790
791 if (!mlx4_is_master(device->dev))
792 return;
793
794 for (slave = device->dev->persist->num_vfs; slave >= 0; --slave) {
795 list_for_each_entry_safe(p, t,
796 &device->pkeys.pkey_port_list[slave],
797 entry) {
798 list_del(&p->entry);
799 port = container_of(p, struct mlx4_port, kobj);
800 sysfs_remove_group(p, &port->pkey_group);
801 sysfs_remove_group(p, &port->gid_group);
802 remove_vf_smi_entries(port);
803 kobject_put(p);
804 kobject_put(device->dev_ports_parent[slave]);
805 }
806 kobject_put(device->dev_ports_parent[slave]);
807 kobject_put(device->pkeys.device_parent[slave]);
808 kobject_put(device->pkeys.device_parent[slave]);
809 kobject_put(device->iov_parent);
810 }
811 }
812
813 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *dev)
814 {
815 int i;
816 int ret = 0;
817
818 if (!mlx4_is_master(dev->dev))
819 return 0;
820
821 dev->iov_parent =
822 kobject_create_and_add("iov",
823 kobject_get(dev->ib_dev.ports_parent->parent));
824 if (!dev->iov_parent) {
825 ret = -ENOMEM;
826 goto err;
827 }
828 dev->ports_parent =
829 kobject_create_and_add("ports",
830 kobject_get(dev->iov_parent));
831 if (!dev->ports_parent) {
832 ret = -ENOMEM;
833 goto err_ports;
834 }
835
836 for (i = 1; i <= dev->ib_dev.phys_port_cnt; ++i) {
837 ret = add_port_entries(dev, i);
838 if (ret)
839 goto err_add_entries;
840 }
841
842 ret = register_pkey_tree(dev);
843 if (ret)
844 goto err_add_entries;
845 return 0;
846
847 err_add_entries:
848 kobject_put(dev->ports_parent);
849
850 err_ports:
851 kobject_put(dev->iov_parent);
852 err:
853 kobject_put(dev->ib_dev.ports_parent->parent);
854 pr_err("mlx4_ib_device_register_sysfs error (%d)\n", ret);
855 return ret;
856 }
857
858 static void unregister_alias_guid_tree(struct mlx4_ib_dev *device)
859 {
860 struct mlx4_ib_iov_port *p;
861 int i;
862
863 if (!mlx4_is_master(device->dev))
864 return;
865
866 for (i = 0; i < device->dev->caps.num_ports; i++) {
867 p = &device->iov_ports[i];
868 kobject_put(p->admin_alias_parent);
869 kobject_put(p->gids_parent);
870 kobject_put(p->pkeys_parent);
871 kobject_put(p->mcgs_parent);
872 kobject_put(p->cur_port);
873 kobject_put(p->cur_port);
874 kobject_put(p->cur_port);
875 kobject_put(p->cur_port);
876 kobject_put(p->cur_port);
877 kobject_put(p->dev->ports_parent);
878 kfree(p->dentr_ar);
879 }
880 }
881
882 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device)
883 {
884 unregister_alias_guid_tree(device);
885 unregister_pkey_tree(device);
886 kobject_put(device->ports_parent);
887 kobject_put(device->iov_parent);
888 kobject_put(device->iov_parent);
889 kobject_put(device->ib_dev.ports_parent->parent);
890 }
CRIS linux kernel tree