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 */
show_admin_alias_guid(struct device * dev,struct device_attribute * attr,char * buf)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 sysfs_emit(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 */
store_admin_alias_guid(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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
show_port_gid(struct device * dev,struct device_attribute * attr,char * buf)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 int ret;
121 __be16 *raw;
122
123 ret = __mlx4_ib_query_gid(&mdev->ib_dev, port->num,
124 mlx4_ib_iov_dentry->entry_num, &gid, 1);
125 if (ret)
126 return ret;
127
128 raw = (__be16 *)gid.raw;
129 return sysfs_emit(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
130 be16_to_cpu(raw[0]),
131 be16_to_cpu(raw[1]),
132 be16_to_cpu(raw[2]),
133 be16_to_cpu(raw[3]),
134 be16_to_cpu(raw[4]),
135 be16_to_cpu(raw[5]),
136 be16_to_cpu(raw[6]),
137 be16_to_cpu(raw[7]));
138 }
139
show_phys_port_pkey(struct device * dev,struct device_attribute * attr,char * buf)140 static ssize_t show_phys_port_pkey(struct device *dev,
141 struct device_attribute *attr,
142 char *buf)
143 {
144 struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
145 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
146 struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
147 struct mlx4_ib_dev *mdev = port->dev;
148 u16 pkey;
149 ssize_t ret;
150
151 ret = __mlx4_ib_query_pkey(&mdev->ib_dev, port->num,
152 mlx4_ib_iov_dentry->entry_num, &pkey, 1);
153 if (ret)
154 return ret;
155
156 return sysfs_emit(buf, "0x%04x\n", pkey);
157 }
158
159 #define DENTRY_REMOVE(_dentry) \
160 do { \
161 sysfs_remove_file((_dentry)->kobj, &(_dentry)->dentry.attr); \
162 } while (0);
163
create_sysfs_entry(void * _ctx,struct mlx4_ib_iov_sysfs_attr * _dentry,char * _name,struct kobject * _kobj,ssize_t (* show)(struct device * dev,struct device_attribute * attr,char * buf),ssize_t (* store)(struct device * dev,struct device_attribute * attr,const char * buf,size_t count))164 static int create_sysfs_entry(void *_ctx, struct mlx4_ib_iov_sysfs_attr *_dentry,
165 char *_name, struct kobject *_kobj,
166 ssize_t (*show)(struct device *dev,
167 struct device_attribute *attr,
168 char *buf),
169 ssize_t (*store)(struct device *dev,
170 struct device_attribute *attr,
171 const char *buf, size_t count)
172 )
173 {
174 int ret = 0;
175 struct mlx4_ib_iov_sysfs_attr *vdentry = _dentry;
176
177 vdentry->ctx = _ctx;
178 vdentry->dentry.show = show;
179 vdentry->dentry.store = store;
180 sysfs_attr_init(&vdentry->dentry.attr);
181 vdentry->dentry.attr.name = vdentry->name;
182 vdentry->dentry.attr.mode = 0;
183 vdentry->kobj = _kobj;
184 snprintf(vdentry->name, 15, "%s", _name);
185
186 if (vdentry->dentry.store)
187 vdentry->dentry.attr.mode |= S_IWUSR;
188
189 if (vdentry->dentry.show)
190 vdentry->dentry.attr.mode |= S_IRUGO;
191
192 ret = sysfs_create_file(vdentry->kobj, &vdentry->dentry.attr);
193 if (ret) {
194 pr_err("failed to create %s\n", vdentry->dentry.attr.name);
195 vdentry->ctx = NULL;
196 return ret;
197 }
198
199 return ret;
200 }
201
add_sysfs_port_mcg_attr(struct mlx4_ib_dev * device,int port_num,struct attribute * attr)202 int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
203 struct attribute *attr)
204 {
205 struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
206 int ret;
207
208 ret = sysfs_create_file(port->mcgs_parent, attr);
209 if (ret)
210 pr_err("failed to create %s\n", attr->name);
211
212 return ret;
213 }
214
del_sysfs_port_mcg_attr(struct mlx4_ib_dev * device,int port_num,struct attribute * attr)215 void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
216 struct attribute *attr)
217 {
218 struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
219
220 sysfs_remove_file(port->mcgs_parent, attr);
221 }
222
add_port_entries(struct mlx4_ib_dev * device,int port_num)223 static int add_port_entries(struct mlx4_ib_dev *device, int port_num)
224 {
225 int i;
226 char buff[12];
227 struct mlx4_ib_iov_port *port = NULL;
228 int ret = 0 ;
229 struct ib_port_attr attr;
230
231 memset(&attr, 0, sizeof(attr));
232 /* get the physical gid and pkey table sizes.*/
233 ret = __mlx4_ib_query_port(&device->ib_dev, port_num, &attr, 1);
234 if (ret)
235 goto err;
236
237 port = &device->iov_ports[port_num - 1];
238 port->dev = device;
239 port->num = port_num;
240 /* Directory structure:
241 * iov -
242 * port num -
243 * admin_guids
244 * gids (operational)
245 * mcg_table
246 */
247 port->dentr_ar = kzalloc(sizeof (struct mlx4_ib_iov_sysfs_attr_ar),
248 GFP_KERNEL);
249 if (!port->dentr_ar) {
250 ret = -ENOMEM;
251 goto err;
252 }
253 sprintf(buff, "%d", port_num);
254 port->cur_port = kobject_create_and_add(buff,
255 kobject_get(device->ports_parent));
256 if (!port->cur_port) {
257 ret = -ENOMEM;
258 goto kobj_create_err;
259 }
260 /* admin GUIDs */
261 port->admin_alias_parent = kobject_create_and_add("admin_guids",
262 kobject_get(port->cur_port));
263 if (!port->admin_alias_parent) {
264 ret = -ENOMEM;
265 goto err_admin_guids;
266 }
267 for (i = 0 ; i < attr.gid_tbl_len; i++) {
268 sprintf(buff, "%d", i);
269 port->dentr_ar->dentries[i].entry_num = i;
270 ret = create_sysfs_entry(port, &port->dentr_ar->dentries[i],
271 buff, port->admin_alias_parent,
272 show_admin_alias_guid, store_admin_alias_guid);
273 if (ret)
274 goto err_admin_alias_parent;
275 }
276
277 /* gids subdirectory (operational gids) */
278 port->gids_parent = kobject_create_and_add("gids",
279 kobject_get(port->cur_port));
280 if (!port->gids_parent) {
281 ret = -ENOMEM;
282 goto err_gids;
283 }
284
285 for (i = 0 ; i < attr.gid_tbl_len; i++) {
286 sprintf(buff, "%d", i);
287 port->dentr_ar->dentries[attr.gid_tbl_len + i].entry_num = i;
288 ret = create_sysfs_entry(port,
289 &port->dentr_ar->dentries[attr.gid_tbl_len + i],
290 buff,
291 port->gids_parent, show_port_gid, NULL);
292 if (ret)
293 goto err_gids_parent;
294 }
295
296 /* physical port pkey table */
297 port->pkeys_parent =
298 kobject_create_and_add("pkeys", kobject_get(port->cur_port));
299 if (!port->pkeys_parent) {
300 ret = -ENOMEM;
301 goto err_pkeys;
302 }
303
304 for (i = 0 ; i < attr.pkey_tbl_len; i++) {
305 sprintf(buff, "%d", i);
306 port->dentr_ar->dentries[2 * attr.gid_tbl_len + i].entry_num = i;
307 ret = create_sysfs_entry(port,
308 &port->dentr_ar->dentries[2 * attr.gid_tbl_len + i],
309 buff, port->pkeys_parent,
310 show_phys_port_pkey, NULL);
311 if (ret)
312 goto err_pkeys_parent;
313 }
314
315 /* MCGs table */
316 port->mcgs_parent =
317 kobject_create_and_add("mcgs", kobject_get(port->cur_port));
318 if (!port->mcgs_parent) {
319 ret = -ENOMEM;
320 goto err_mcgs;
321 }
322 return 0;
323
324 err_mcgs:
325 kobject_put(port->cur_port);
326
327 err_pkeys_parent:
328 kobject_put(port->pkeys_parent);
329
330 err_pkeys:
331 kobject_put(port->cur_port);
332
333 err_gids_parent:
334 kobject_put(port->gids_parent);
335
336 err_gids:
337 kobject_put(port->cur_port);
338
339 err_admin_alias_parent:
340 kobject_put(port->admin_alias_parent);
341
342 err_admin_guids:
343 kobject_put(port->cur_port);
344 kobject_put(port->cur_port); /* once more for create_and_add buff */
345
346 kobj_create_err:
347 kobject_put(device->ports_parent);
348 kfree(port->dentr_ar);
349
350 err:
351 pr_err("add_port_entries FAILED: for port:%d, error: %d\n",
352 port_num, ret);
353 return ret;
354 }
355
get_name(struct mlx4_ib_dev * dev,char * name,int i,int max)356 static void get_name(struct mlx4_ib_dev *dev, char *name, int i, int max)
357 {
358 /* pci_name format is: bus:dev:func -> xxxx:yy:zz.n
359 * with no ARI only 3 last bits are used so when the fn is higher than 8
360 * need to add it to the dev num, so count in the last number will be
361 * modulo 8 */
362 snprintf(name, max, "%.8s%.2d.%d", pci_name(dev->dev->persist->pdev),
363 i / 8, i % 8);
364 }
365
366 struct mlx4_port {
367 struct kobject kobj;
368 struct mlx4_ib_dev *dev;
369 struct attribute_group pkey_group;
370 struct attribute_group gid_group;
371 struct device_attribute enable_smi_admin;
372 struct device_attribute smi_enabled;
373 int slave;
374 u8 port_num;
375 };
376
377
mlx4_port_release(struct kobject * kobj)378 static void mlx4_port_release(struct kobject *kobj)
379 {
380 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
381 struct attribute *a;
382 int i;
383
384 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
385 kfree(a);
386 kfree(p->pkey_group.attrs);
387 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
388 kfree(a);
389 kfree(p->gid_group.attrs);
390 kfree(p);
391 }
392
393 struct port_attribute {
394 struct attribute attr;
395 ssize_t (*show)(struct mlx4_port *, struct port_attribute *, char *buf);
396 ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
397 const char *buf, size_t count);
398 };
399
port_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)400 static ssize_t port_attr_show(struct kobject *kobj,
401 struct attribute *attr, char *buf)
402 {
403 struct port_attribute *port_attr =
404 container_of(attr, struct port_attribute, attr);
405 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
406
407 if (!port_attr->show)
408 return -EIO;
409 return port_attr->show(p, port_attr, buf);
410 }
411
port_attr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t size)412 static ssize_t port_attr_store(struct kobject *kobj,
413 struct attribute *attr,
414 const char *buf, size_t size)
415 {
416 struct port_attribute *port_attr =
417 container_of(attr, struct port_attribute, attr);
418 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
419
420 if (!port_attr->store)
421 return -EIO;
422 return port_attr->store(p, port_attr, buf, size);
423 }
424
425 static const struct sysfs_ops port_sysfs_ops = {
426 .show = port_attr_show,
427 .store = port_attr_store,
428 };
429
430 static struct kobj_type port_type = {
431 .release = mlx4_port_release,
432 .sysfs_ops = &port_sysfs_ops,
433 };
434
435 struct port_table_attribute {
436 struct port_attribute attr;
437 char name[8];
438 int index;
439 };
440
show_port_pkey(struct mlx4_port * p,struct port_attribute * attr,char * buf)441 static ssize_t show_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
442 char *buf)
443 {
444 struct port_table_attribute *tab_attr =
445 container_of(attr, struct port_table_attribute, attr);
446 struct pkey_mgt *m = &p->dev->pkeys;
447 u8 key = m->virt2phys_pkey[p->slave][p->port_num - 1][tab_attr->index];
448
449 if (key >= p->dev->dev->caps.pkey_table_len[p->port_num])
450 return sysfs_emit(buf, "none\n");
451 return sysfs_emit(buf, "%d\n", key);
452 }
453
store_port_pkey(struct mlx4_port * p,struct port_attribute * attr,const char * buf,size_t count)454 static ssize_t store_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
455 const char *buf, size_t count)
456 {
457 struct port_table_attribute *tab_attr =
458 container_of(attr, struct port_table_attribute, attr);
459 int idx;
460 int err;
461
462 /* do not allow remapping Dom0 virtual pkey table */
463 if (p->slave == mlx4_master_func_num(p->dev->dev))
464 return -EINVAL;
465
466 if (!strncasecmp(buf, "no", 2))
467 idx = p->dev->dev->phys_caps.pkey_phys_table_len[p->port_num] - 1;
468 else if (sscanf(buf, "%i", &idx) != 1 ||
469 idx >= p->dev->dev->caps.pkey_table_len[p->port_num] ||
470 idx < 0)
471 return -EINVAL;
472
473 p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1]
474 [tab_attr->index] = idx;
475 mlx4_sync_pkey_table(p->dev->dev, p->slave, p->port_num,
476 tab_attr->index, idx);
477 err = mlx4_gen_pkey_eqe(p->dev->dev, p->slave, p->port_num);
478 if (err) {
479 pr_err("mlx4_gen_pkey_eqe failed for slave %d,"
480 " port %d, index %d\n", p->slave, p->port_num, idx);
481 return err;
482 }
483 return count;
484 }
485
show_port_gid_idx(struct mlx4_port * p,struct port_attribute * attr,char * buf)486 static ssize_t show_port_gid_idx(struct mlx4_port *p,
487 struct port_attribute *attr, char *buf)
488 {
489 return sysfs_emit(buf, "%d\n", p->slave);
490 }
491
492 static struct attribute **
alloc_group_attrs(ssize_t (* show)(struct mlx4_port *,struct port_attribute *,char * buf),ssize_t (* store)(struct mlx4_port *,struct port_attribute *,const char * buf,size_t count),int len)493 alloc_group_attrs(ssize_t (*show)(struct mlx4_port *,
494 struct port_attribute *, char *buf),
495 ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
496 const char *buf, size_t count),
497 int len)
498 {
499 struct attribute **tab_attr;
500 struct port_table_attribute *element;
501 int i;
502
503 tab_attr = kcalloc(1 + len, sizeof (struct attribute *), GFP_KERNEL);
504 if (!tab_attr)
505 return NULL;
506
507 for (i = 0; i < len; i++) {
508 element = kzalloc(sizeof (struct port_table_attribute),
509 GFP_KERNEL);
510 if (!element)
511 goto err;
512 if (snprintf(element->name, sizeof (element->name),
513 "%d", i) >= sizeof (element->name)) {
514 kfree(element);
515 goto err;
516 }
517 sysfs_attr_init(&element->attr.attr);
518 element->attr.attr.name = element->name;
519 if (store) {
520 element->attr.attr.mode = S_IWUSR | S_IRUGO;
521 element->attr.store = store;
522 } else
523 element->attr.attr.mode = S_IRUGO;
524
525 element->attr.show = show;
526 element->index = i;
527 tab_attr[i] = &element->attr.attr;
528 }
529 return tab_attr;
530
531 err:
532 while (--i >= 0)
533 kfree(tab_attr[i]);
534 kfree(tab_attr);
535 return NULL;
536 }
537
sysfs_show_smi_enabled(struct device * dev,struct device_attribute * attr,char * buf)538 static ssize_t sysfs_show_smi_enabled(struct device *dev,
539 struct device_attribute *attr, char *buf)
540 {
541 struct mlx4_port *p =
542 container_of(attr, struct mlx4_port, smi_enabled);
543
544 return sysfs_emit(buf, "%d\n",
545 !!mlx4_vf_smi_enabled(p->dev->dev, p->slave,
546 p->port_num));
547 }
548
sysfs_show_enable_smi_admin(struct device * dev,struct device_attribute * attr,char * buf)549 static ssize_t sysfs_show_enable_smi_admin(struct device *dev,
550 struct device_attribute *attr,
551 char *buf)
552 {
553 struct mlx4_port *p =
554 container_of(attr, struct mlx4_port, enable_smi_admin);
555
556 return sysfs_emit(buf, "%d\n",
557 !!mlx4_vf_get_enable_smi_admin(p->dev->dev, p->slave,
558 p->port_num));
559 }
560
sysfs_store_enable_smi_admin(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)561 static ssize_t sysfs_store_enable_smi_admin(struct device *dev,
562 struct device_attribute *attr,
563 const char *buf, size_t count)
564 {
565 struct mlx4_port *p =
566 container_of(attr, struct mlx4_port, enable_smi_admin);
567 int enable;
568
569 if (sscanf(buf, "%i", &enable) != 1 ||
570 enable < 0 || enable > 1)
571 return -EINVAL;
572
573 if (mlx4_vf_set_enable_smi_admin(p->dev->dev, p->slave, p->port_num, enable))
574 return -EINVAL;
575 return count;
576 }
577
add_vf_smi_entries(struct mlx4_port * p)578 static int add_vf_smi_entries(struct mlx4_port *p)
579 {
580 int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
581 IB_LINK_LAYER_ETHERNET;
582 int ret;
583
584 /* do not display entries if eth transport, or if master */
585 if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
586 return 0;
587
588 sysfs_attr_init(&p->smi_enabled.attr);
589 p->smi_enabled.show = sysfs_show_smi_enabled;
590 p->smi_enabled.store = NULL;
591 p->smi_enabled.attr.name = "smi_enabled";
592 p->smi_enabled.attr.mode = 0444;
593 ret = sysfs_create_file(&p->kobj, &p->smi_enabled.attr);
594 if (ret) {
595 pr_err("failed to create smi_enabled\n");
596 return ret;
597 }
598
599 sysfs_attr_init(&p->enable_smi_admin.attr);
600 p->enable_smi_admin.show = sysfs_show_enable_smi_admin;
601 p->enable_smi_admin.store = sysfs_store_enable_smi_admin;
602 p->enable_smi_admin.attr.name = "enable_smi_admin";
603 p->enable_smi_admin.attr.mode = 0644;
604 ret = sysfs_create_file(&p->kobj, &p->enable_smi_admin.attr);
605 if (ret) {
606 pr_err("failed to create enable_smi_admin\n");
607 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
608 return ret;
609 }
610 return 0;
611 }
612
remove_vf_smi_entries(struct mlx4_port * p)613 static void remove_vf_smi_entries(struct mlx4_port *p)
614 {
615 int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
616 IB_LINK_LAYER_ETHERNET;
617
618 if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
619 return;
620
621 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
622 sysfs_remove_file(&p->kobj, &p->enable_smi_admin.attr);
623 }
624
add_port(struct mlx4_ib_dev * dev,int port_num,int slave)625 static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave)
626 {
627 struct mlx4_port *p;
628 int i;
629 int ret;
630 int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port_num) ==
631 IB_LINK_LAYER_ETHERNET;
632
633 p = kzalloc(sizeof *p, GFP_KERNEL);
634 if (!p)
635 return -ENOMEM;
636
637 p->dev = dev;
638 p->port_num = port_num;
639 p->slave = slave;
640
641 ret = kobject_init_and_add(&p->kobj, &port_type,
642 kobject_get(dev->dev_ports_parent[slave]),
643 "%d", port_num);
644 if (ret)
645 goto err_alloc;
646
647 p->pkey_group.name = "pkey_idx";
648 p->pkey_group.attrs =
649 alloc_group_attrs(show_port_pkey,
650 is_eth ? NULL : store_port_pkey,
651 dev->dev->caps.pkey_table_len[port_num]);
652 if (!p->pkey_group.attrs) {
653 ret = -ENOMEM;
654 goto err_alloc;
655 }
656
657 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
658 if (ret)
659 goto err_free_pkey;
660
661 p->gid_group.name = "gid_idx";
662 p->gid_group.attrs = alloc_group_attrs(show_port_gid_idx, NULL, 1);
663 if (!p->gid_group.attrs) {
664 ret = -ENOMEM;
665 goto err_free_pkey;
666 }
667
668 ret = sysfs_create_group(&p->kobj, &p->gid_group);
669 if (ret)
670 goto err_free_gid;
671
672 ret = add_vf_smi_entries(p);
673 if (ret)
674 goto err_free_gid;
675
676 list_add_tail(&p->kobj.entry, &dev->pkeys.pkey_port_list[slave]);
677 return 0;
678
679 err_free_gid:
680 kfree(p->gid_group.attrs[0]);
681 kfree(p->gid_group.attrs);
682
683 err_free_pkey:
684 for (i = 0; i < dev->dev->caps.pkey_table_len[port_num]; ++i)
685 kfree(p->pkey_group.attrs[i]);
686 kfree(p->pkey_group.attrs);
687
688 err_alloc:
689 kobject_put(dev->dev_ports_parent[slave]);
690 kfree(p);
691 return ret;
692 }
693
register_one_pkey_tree(struct mlx4_ib_dev * dev,int slave)694 static int register_one_pkey_tree(struct mlx4_ib_dev *dev, int slave)
695 {
696 char name[32];
697 int err;
698 int port;
699 struct kobject *p, *t;
700 struct mlx4_port *mport;
701 struct mlx4_active_ports actv_ports;
702
703 get_name(dev, name, slave, sizeof name);
704
705 dev->pkeys.device_parent[slave] =
706 kobject_create_and_add(name, kobject_get(dev->iov_parent));
707
708 if (!dev->pkeys.device_parent[slave]) {
709 err = -ENOMEM;
710 goto fail_dev;
711 }
712
713 INIT_LIST_HEAD(&dev->pkeys.pkey_port_list[slave]);
714
715 dev->dev_ports_parent[slave] =
716 kobject_create_and_add("ports",
717 kobject_get(dev->pkeys.device_parent[slave]));
718
719 if (!dev->dev_ports_parent[slave]) {
720 err = -ENOMEM;
721 goto err_ports;
722 }
723
724 actv_ports = mlx4_get_active_ports(dev->dev, slave);
725
726 for (port = 1; port <= dev->dev->caps.num_ports; ++port) {
727 if (!test_bit(port - 1, actv_ports.ports))
728 continue;
729 err = add_port(dev, port, slave);
730 if (err)
731 goto err_add;
732 }
733 return 0;
734
735 err_add:
736 list_for_each_entry_safe(p, t,
737 &dev->pkeys.pkey_port_list[slave],
738 entry) {
739 list_del(&p->entry);
740 mport = container_of(p, struct mlx4_port, kobj);
741 sysfs_remove_group(p, &mport->pkey_group);
742 sysfs_remove_group(p, &mport->gid_group);
743 remove_vf_smi_entries(mport);
744 kobject_put(p);
745 }
746 kobject_put(dev->dev_ports_parent[slave]);
747
748 err_ports:
749 kobject_put(dev->pkeys.device_parent[slave]);
750 /* extra put for the device_parent create_and_add */
751 kobject_put(dev->pkeys.device_parent[slave]);
752
753 fail_dev:
754 kobject_put(dev->iov_parent);
755 return err;
756 }
757
register_pkey_tree(struct mlx4_ib_dev * device)758 static int register_pkey_tree(struct mlx4_ib_dev *device)
759 {
760 int i;
761
762 if (!mlx4_is_master(device->dev))
763 return 0;
764
765 for (i = 0; i <= device->dev->persist->num_vfs; ++i)
766 register_one_pkey_tree(device, i);
767
768 return 0;
769 }
770
unregister_pkey_tree(struct mlx4_ib_dev * device)771 static void unregister_pkey_tree(struct mlx4_ib_dev *device)
772 {
773 int slave;
774 struct kobject *p, *t;
775 struct mlx4_port *port;
776
777 if (!mlx4_is_master(device->dev))
778 return;
779
780 for (slave = device->dev->persist->num_vfs; slave >= 0; --slave) {
781 list_for_each_entry_safe(p, t,
782 &device->pkeys.pkey_port_list[slave],
783 entry) {
784 list_del(&p->entry);
785 port = container_of(p, struct mlx4_port, kobj);
786 sysfs_remove_group(p, &port->pkey_group);
787 sysfs_remove_group(p, &port->gid_group);
788 remove_vf_smi_entries(port);
789 kobject_put(p);
790 kobject_put(device->dev_ports_parent[slave]);
791 }
792 kobject_put(device->dev_ports_parent[slave]);
793 kobject_put(device->pkeys.device_parent[slave]);
794 kobject_put(device->pkeys.device_parent[slave]);
795 kobject_put(device->iov_parent);
796 }
797 }
798
mlx4_ib_device_register_sysfs(struct mlx4_ib_dev * dev)799 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *dev)
800 {
801 unsigned int i;
802 int ret = 0;
803
804 if (!mlx4_is_master(dev->dev))
805 return 0;
806
807 dev->iov_parent = kobject_create_and_add("iov", &dev->ib_dev.dev.kobj);
808 if (!dev->iov_parent) {
809 ret = -ENOMEM;
810 goto err;
811 }
812 dev->ports_parent =
813 kobject_create_and_add("ports",
814 kobject_get(dev->iov_parent));
815 if (!dev->ports_parent) {
816 ret = -ENOMEM;
817 goto err_ports;
818 }
819
820 rdma_for_each_port(&dev->ib_dev, i) {
821 ret = add_port_entries(dev, i);
822 if (ret)
823 goto err_add_entries;
824 }
825
826 ret = register_pkey_tree(dev);
827 if (ret)
828 goto err_add_entries;
829 return 0;
830
831 err_add_entries:
832 kobject_put(dev->ports_parent);
833
834 err_ports:
835 kobject_put(dev->iov_parent);
836 err:
837 pr_err("mlx4_ib_device_register_sysfs error (%d)\n", ret);
838 return ret;
839 }
840
unregister_alias_guid_tree(struct mlx4_ib_dev * device)841 static void unregister_alias_guid_tree(struct mlx4_ib_dev *device)
842 {
843 struct mlx4_ib_iov_port *p;
844 int i;
845
846 if (!mlx4_is_master(device->dev))
847 return;
848
849 for (i = 0; i < device->dev->caps.num_ports; i++) {
850 p = &device->iov_ports[i];
851 kobject_put(p->admin_alias_parent);
852 kobject_put(p->gids_parent);
853 kobject_put(p->pkeys_parent);
854 kobject_put(p->mcgs_parent);
855 kobject_put(p->cur_port);
856 kobject_put(p->cur_port);
857 kobject_put(p->cur_port);
858 kobject_put(p->cur_port);
859 kobject_put(p->cur_port);
860 kobject_put(p->dev->ports_parent);
861 kfree(p->dentr_ar);
862 }
863 }
864
mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev * device)865 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device)
866 {
867 unregister_alias_guid_tree(device);
868 unregister_pkey_tree(device);
869 kobject_put(device->ports_parent);
870 kobject_put(device->iov_parent);
871 kobject_put(device->iov_parent);
872 }
873