1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright(c) 2015-2017 Intel Corporation.
4 */
5
6#include <linux/ctype.h>
7#include <rdma/ib_sysfs.h>
8
9#include "hfi.h"
10#include "mad.h"
11#include "trace.h"
12
13static struct hfi1_pportdata *hfi1_get_pportdata_kobj(struct kobject *kobj)
14{
15 u32 port_num;
16 struct ib_device *ibdev = ib_port_sysfs_get_ibdev_kobj(kobj, port_num: &port_num);
17 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
18
19 return &dd->pport[port_num - 1];
20}
21
22/*
23 * Start of per-port congestion control structures and support code
24 */
25
26/*
27 * Congestion control table size followed by table entries
28 */
29static ssize_t cc_table_bin_read(struct file *filp, struct kobject *kobj,
30 const struct bin_attribute *bin_attr,
31 char *buf, loff_t pos, size_t count)
32{
33 int ret;
34 struct hfi1_pportdata *ppd = hfi1_get_pportdata_kobj(kobj);
35 struct cc_state *cc_state;
36
37 ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow)
38 + sizeof(__be16);
39
40 if (pos > ret)
41 return -EINVAL;
42
43 if (count > ret - pos)
44 count = ret - pos;
45
46 if (!count)
47 return count;
48
49 rcu_read_lock();
50 cc_state = get_cc_state(ppd);
51 if (!cc_state) {
52 rcu_read_unlock();
53 return -EINVAL;
54 }
55 memcpy(buf, (void *)&cc_state->cct + pos, count);
56 rcu_read_unlock();
57
58 return count;
59}
60static const BIN_ATTR_RO(cc_table_bin, PAGE_SIZE);
61
62/*
63 * Congestion settings: port control, control map and an array of 16
64 * entries for the congestion entries - increase, timer, event log
65 * trigger threshold and the minimum injection rate delay.
66 */
67static ssize_t cc_setting_bin_read(struct file *filp, struct kobject *kobj,
68 const struct bin_attribute *bin_attr,
69 char *buf, loff_t pos, size_t count)
70{
71 struct hfi1_pportdata *ppd = hfi1_get_pportdata_kobj(kobj);
72 int ret;
73 struct cc_state *cc_state;
74
75 ret = sizeof(struct opa_congestion_setting_attr_shadow);
76
77 if (pos > ret)
78 return -EINVAL;
79 if (count > ret - pos)
80 count = ret - pos;
81
82 if (!count)
83 return count;
84
85 rcu_read_lock();
86 cc_state = get_cc_state(ppd);
87 if (!cc_state) {
88 rcu_read_unlock();
89 return -EINVAL;
90 }
91 memcpy(buf, (void *)&cc_state->cong_setting + pos, count);
92 rcu_read_unlock();
93
94 return count;
95}
96static const BIN_ATTR_RO(cc_setting_bin, PAGE_SIZE);
97
98static const struct bin_attribute *const port_cc_bin_attributes[] = {
99 &bin_attr_cc_setting_bin,
100 &bin_attr_cc_table_bin,
101 NULL
102};
103
104static ssize_t cc_prescan_show(struct ib_device *ibdev, u32 port_num,
105 struct ib_port_attribute *attr, char *buf)
106{
107 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
108 struct hfi1_pportdata *ppd = &dd->pport[port_num - 1];
109
110 return sysfs_emit(buf, fmt: "%s\n", ppd->cc_prescan ? "on" : "off");
111}
112
113static ssize_t cc_prescan_store(struct ib_device *ibdev, u32 port_num,
114 struct ib_port_attribute *attr, const char *buf,
115 size_t count)
116{
117 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
118 struct hfi1_pportdata *ppd = &dd->pport[port_num - 1];
119
120 if (!memcmp(p: buf, q: "on", size: 2))
121 ppd->cc_prescan = true;
122 else if (!memcmp(p: buf, q: "off", size: 3))
123 ppd->cc_prescan = false;
124
125 return count;
126}
127static IB_PORT_ATTR_ADMIN_RW(cc_prescan);
128
129static struct attribute *port_cc_attributes[] = {
130 &ib_port_attr_cc_prescan.attr,
131 NULL
132};
133
134static const struct attribute_group port_cc_group = {
135 .name = "CCMgtA",
136 .attrs = port_cc_attributes,
137 .bin_attrs = port_cc_bin_attributes,
138};
139
140/* Start sc2vl */
141struct hfi1_sc2vl_attr {
142 struct ib_port_attribute attr;
143 int sc;
144};
145
146static ssize_t sc2vl_attr_show(struct ib_device *ibdev, u32 port_num,
147 struct ib_port_attribute *attr, char *buf)
148{
149 struct hfi1_sc2vl_attr *sattr =
150 container_of(attr, struct hfi1_sc2vl_attr, attr);
151 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
152
153 return sysfs_emit(buf, fmt: "%u\n", *((u8 *)dd->sc2vl + sattr->sc));
154}
155
156#define HFI1_SC2VL_ATTR(N) \
157 static struct hfi1_sc2vl_attr hfi1_sc2vl_attr_##N = { \
158 .attr = __ATTR(N, 0444, sc2vl_attr_show, NULL), \
159 .sc = N, \
160 }
161
162HFI1_SC2VL_ATTR(0);
163HFI1_SC2VL_ATTR(1);
164HFI1_SC2VL_ATTR(2);
165HFI1_SC2VL_ATTR(3);
166HFI1_SC2VL_ATTR(4);
167HFI1_SC2VL_ATTR(5);
168HFI1_SC2VL_ATTR(6);
169HFI1_SC2VL_ATTR(7);
170HFI1_SC2VL_ATTR(8);
171HFI1_SC2VL_ATTR(9);
172HFI1_SC2VL_ATTR(10);
173HFI1_SC2VL_ATTR(11);
174HFI1_SC2VL_ATTR(12);
175HFI1_SC2VL_ATTR(13);
176HFI1_SC2VL_ATTR(14);
177HFI1_SC2VL_ATTR(15);
178HFI1_SC2VL_ATTR(16);
179HFI1_SC2VL_ATTR(17);
180HFI1_SC2VL_ATTR(18);
181HFI1_SC2VL_ATTR(19);
182HFI1_SC2VL_ATTR(20);
183HFI1_SC2VL_ATTR(21);
184HFI1_SC2VL_ATTR(22);
185HFI1_SC2VL_ATTR(23);
186HFI1_SC2VL_ATTR(24);
187HFI1_SC2VL_ATTR(25);
188HFI1_SC2VL_ATTR(26);
189HFI1_SC2VL_ATTR(27);
190HFI1_SC2VL_ATTR(28);
191HFI1_SC2VL_ATTR(29);
192HFI1_SC2VL_ATTR(30);
193HFI1_SC2VL_ATTR(31);
194
195static struct attribute *port_sc2vl_attributes[] = {
196 &hfi1_sc2vl_attr_0.attr.attr,
197 &hfi1_sc2vl_attr_1.attr.attr,
198 &hfi1_sc2vl_attr_2.attr.attr,
199 &hfi1_sc2vl_attr_3.attr.attr,
200 &hfi1_sc2vl_attr_4.attr.attr,
201 &hfi1_sc2vl_attr_5.attr.attr,
202 &hfi1_sc2vl_attr_6.attr.attr,
203 &hfi1_sc2vl_attr_7.attr.attr,
204 &hfi1_sc2vl_attr_8.attr.attr,
205 &hfi1_sc2vl_attr_9.attr.attr,
206 &hfi1_sc2vl_attr_10.attr.attr,
207 &hfi1_sc2vl_attr_11.attr.attr,
208 &hfi1_sc2vl_attr_12.attr.attr,
209 &hfi1_sc2vl_attr_13.attr.attr,
210 &hfi1_sc2vl_attr_14.attr.attr,
211 &hfi1_sc2vl_attr_15.attr.attr,
212 &hfi1_sc2vl_attr_16.attr.attr,
213 &hfi1_sc2vl_attr_17.attr.attr,
214 &hfi1_sc2vl_attr_18.attr.attr,
215 &hfi1_sc2vl_attr_19.attr.attr,
216 &hfi1_sc2vl_attr_20.attr.attr,
217 &hfi1_sc2vl_attr_21.attr.attr,
218 &hfi1_sc2vl_attr_22.attr.attr,
219 &hfi1_sc2vl_attr_23.attr.attr,
220 &hfi1_sc2vl_attr_24.attr.attr,
221 &hfi1_sc2vl_attr_25.attr.attr,
222 &hfi1_sc2vl_attr_26.attr.attr,
223 &hfi1_sc2vl_attr_27.attr.attr,
224 &hfi1_sc2vl_attr_28.attr.attr,
225 &hfi1_sc2vl_attr_29.attr.attr,
226 &hfi1_sc2vl_attr_30.attr.attr,
227 &hfi1_sc2vl_attr_31.attr.attr,
228 NULL
229};
230
231static const struct attribute_group port_sc2vl_group = {
232 .name = "sc2vl",
233 .attrs = port_sc2vl_attributes,
234};
235/* End sc2vl */
236
237/* Start sl2sc */
238struct hfi1_sl2sc_attr {
239 struct ib_port_attribute attr;
240 int sl;
241};
242
243static ssize_t sl2sc_attr_show(struct ib_device *ibdev, u32 port_num,
244 struct ib_port_attribute *attr, char *buf)
245{
246 struct hfi1_sl2sc_attr *sattr =
247 container_of(attr, struct hfi1_sl2sc_attr, attr);
248 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
249 struct hfi1_ibport *ibp = &dd->pport[port_num - 1].ibport_data;
250
251 return sysfs_emit(buf, fmt: "%u\n", ibp->sl_to_sc[sattr->sl]);
252}
253
254#define HFI1_SL2SC_ATTR(N) \
255 static struct hfi1_sl2sc_attr hfi1_sl2sc_attr_##N = { \
256 .attr = __ATTR(N, 0444, sl2sc_attr_show, NULL), .sl = N \
257 }
258
259HFI1_SL2SC_ATTR(0);
260HFI1_SL2SC_ATTR(1);
261HFI1_SL2SC_ATTR(2);
262HFI1_SL2SC_ATTR(3);
263HFI1_SL2SC_ATTR(4);
264HFI1_SL2SC_ATTR(5);
265HFI1_SL2SC_ATTR(6);
266HFI1_SL2SC_ATTR(7);
267HFI1_SL2SC_ATTR(8);
268HFI1_SL2SC_ATTR(9);
269HFI1_SL2SC_ATTR(10);
270HFI1_SL2SC_ATTR(11);
271HFI1_SL2SC_ATTR(12);
272HFI1_SL2SC_ATTR(13);
273HFI1_SL2SC_ATTR(14);
274HFI1_SL2SC_ATTR(15);
275HFI1_SL2SC_ATTR(16);
276HFI1_SL2SC_ATTR(17);
277HFI1_SL2SC_ATTR(18);
278HFI1_SL2SC_ATTR(19);
279HFI1_SL2SC_ATTR(20);
280HFI1_SL2SC_ATTR(21);
281HFI1_SL2SC_ATTR(22);
282HFI1_SL2SC_ATTR(23);
283HFI1_SL2SC_ATTR(24);
284HFI1_SL2SC_ATTR(25);
285HFI1_SL2SC_ATTR(26);
286HFI1_SL2SC_ATTR(27);
287HFI1_SL2SC_ATTR(28);
288HFI1_SL2SC_ATTR(29);
289HFI1_SL2SC_ATTR(30);
290HFI1_SL2SC_ATTR(31);
291
292static struct attribute *port_sl2sc_attributes[] = {
293 &hfi1_sl2sc_attr_0.attr.attr,
294 &hfi1_sl2sc_attr_1.attr.attr,
295 &hfi1_sl2sc_attr_2.attr.attr,
296 &hfi1_sl2sc_attr_3.attr.attr,
297 &hfi1_sl2sc_attr_4.attr.attr,
298 &hfi1_sl2sc_attr_5.attr.attr,
299 &hfi1_sl2sc_attr_6.attr.attr,
300 &hfi1_sl2sc_attr_7.attr.attr,
301 &hfi1_sl2sc_attr_8.attr.attr,
302 &hfi1_sl2sc_attr_9.attr.attr,
303 &hfi1_sl2sc_attr_10.attr.attr,
304 &hfi1_sl2sc_attr_11.attr.attr,
305 &hfi1_sl2sc_attr_12.attr.attr,
306 &hfi1_sl2sc_attr_13.attr.attr,
307 &hfi1_sl2sc_attr_14.attr.attr,
308 &hfi1_sl2sc_attr_15.attr.attr,
309 &hfi1_sl2sc_attr_16.attr.attr,
310 &hfi1_sl2sc_attr_17.attr.attr,
311 &hfi1_sl2sc_attr_18.attr.attr,
312 &hfi1_sl2sc_attr_19.attr.attr,
313 &hfi1_sl2sc_attr_20.attr.attr,
314 &hfi1_sl2sc_attr_21.attr.attr,
315 &hfi1_sl2sc_attr_22.attr.attr,
316 &hfi1_sl2sc_attr_23.attr.attr,
317 &hfi1_sl2sc_attr_24.attr.attr,
318 &hfi1_sl2sc_attr_25.attr.attr,
319 &hfi1_sl2sc_attr_26.attr.attr,
320 &hfi1_sl2sc_attr_27.attr.attr,
321 &hfi1_sl2sc_attr_28.attr.attr,
322 &hfi1_sl2sc_attr_29.attr.attr,
323 &hfi1_sl2sc_attr_30.attr.attr,
324 &hfi1_sl2sc_attr_31.attr.attr,
325 NULL
326};
327
328static const struct attribute_group port_sl2sc_group = {
329 .name = "sl2sc",
330 .attrs = port_sl2sc_attributes,
331};
332
333/* End sl2sc */
334
335/* Start vl2mtu */
336
337struct hfi1_vl2mtu_attr {
338 struct ib_port_attribute attr;
339 int vl;
340};
341
342static ssize_t vl2mtu_attr_show(struct ib_device *ibdev, u32 port_num,
343 struct ib_port_attribute *attr, char *buf)
344{
345 struct hfi1_vl2mtu_attr *vlattr =
346 container_of(attr, struct hfi1_vl2mtu_attr, attr);
347 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
348
349 return sysfs_emit(buf, fmt: "%u\n", dd->vld[vlattr->vl].mtu);
350}
351
352#define HFI1_VL2MTU_ATTR(N) \
353 static struct hfi1_vl2mtu_attr hfi1_vl2mtu_attr_##N = { \
354 .attr = __ATTR(N, 0444, vl2mtu_attr_show, NULL), \
355 .vl = N, \
356 }
357
358HFI1_VL2MTU_ATTR(0);
359HFI1_VL2MTU_ATTR(1);
360HFI1_VL2MTU_ATTR(2);
361HFI1_VL2MTU_ATTR(3);
362HFI1_VL2MTU_ATTR(4);
363HFI1_VL2MTU_ATTR(5);
364HFI1_VL2MTU_ATTR(6);
365HFI1_VL2MTU_ATTR(7);
366HFI1_VL2MTU_ATTR(8);
367HFI1_VL2MTU_ATTR(9);
368HFI1_VL2MTU_ATTR(10);
369HFI1_VL2MTU_ATTR(11);
370HFI1_VL2MTU_ATTR(12);
371HFI1_VL2MTU_ATTR(13);
372HFI1_VL2MTU_ATTR(14);
373HFI1_VL2MTU_ATTR(15);
374
375static struct attribute *port_vl2mtu_attributes[] = {
376 &hfi1_vl2mtu_attr_0.attr.attr,
377 &hfi1_vl2mtu_attr_1.attr.attr,
378 &hfi1_vl2mtu_attr_2.attr.attr,
379 &hfi1_vl2mtu_attr_3.attr.attr,
380 &hfi1_vl2mtu_attr_4.attr.attr,
381 &hfi1_vl2mtu_attr_5.attr.attr,
382 &hfi1_vl2mtu_attr_6.attr.attr,
383 &hfi1_vl2mtu_attr_7.attr.attr,
384 &hfi1_vl2mtu_attr_8.attr.attr,
385 &hfi1_vl2mtu_attr_9.attr.attr,
386 &hfi1_vl2mtu_attr_10.attr.attr,
387 &hfi1_vl2mtu_attr_11.attr.attr,
388 &hfi1_vl2mtu_attr_12.attr.attr,
389 &hfi1_vl2mtu_attr_13.attr.attr,
390 &hfi1_vl2mtu_attr_14.attr.attr,
391 &hfi1_vl2mtu_attr_15.attr.attr,
392 NULL
393};
394
395static const struct attribute_group port_vl2mtu_group = {
396 .name = "vl2mtu",
397 .attrs = port_vl2mtu_attributes,
398};
399
400/* end of per-port file structures and support code */
401
402/*
403 * Start of per-unit (or driver, in some cases, but replicated
404 * per unit) functions (these get a device *)
405 */
406static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr,
407 char *buf)
408{
409 struct hfi1_ibdev *dev =
410 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
411
412 return sysfs_emit(buf, fmt: "%x\n", dd_from_dev(dev)->minrev);
413}
414static DEVICE_ATTR_RO(hw_rev);
415
416static ssize_t board_id_show(struct device *device,
417 struct device_attribute *attr, char *buf)
418{
419 struct hfi1_ibdev *dev =
420 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
421 struct hfi1_devdata *dd = dd_from_dev(dev);
422
423 if (!dd->boardname)
424 return -EINVAL;
425
426 return sysfs_emit(buf, fmt: "%s\n", dd->boardname);
427}
428static DEVICE_ATTR_RO(board_id);
429
430static ssize_t boardversion_show(struct device *device,
431 struct device_attribute *attr, char *buf)
432{
433 struct hfi1_ibdev *dev =
434 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
435 struct hfi1_devdata *dd = dd_from_dev(dev);
436
437 /* The string printed here is already newline-terminated. */
438 return sysfs_emit(buf, fmt: "%s", dd->boardversion);
439}
440static DEVICE_ATTR_RO(boardversion);
441
442static ssize_t nctxts_show(struct device *device,
443 struct device_attribute *attr, char *buf)
444{
445 struct hfi1_ibdev *dev =
446 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
447 struct hfi1_devdata *dd = dd_from_dev(dev);
448
449 /*
450 * Return the smaller of send and receive contexts.
451 * Normally, user level applications would require both a send
452 * and a receive context, so returning the smaller of the two counts
453 * give a more accurate picture of total contexts available.
454 */
455 return sysfs_emit(buf, fmt: "%u\n",
456 min(dd->num_user_contexts,
457 (u32)dd->sc_sizes[SC_USER].count));
458}
459static DEVICE_ATTR_RO(nctxts);
460
461static ssize_t nfreectxts_show(struct device *device,
462 struct device_attribute *attr, char *buf)
463{
464 struct hfi1_ibdev *dev =
465 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
466 struct hfi1_devdata *dd = dd_from_dev(dev);
467
468 /* Return the number of free user ports (contexts) available. */
469 return sysfs_emit(buf, fmt: "%u\n", dd->freectxts);
470}
471static DEVICE_ATTR_RO(nfreectxts);
472
473static ssize_t serial_show(struct device *device,
474 struct device_attribute *attr, char *buf)
475{
476 struct hfi1_ibdev *dev =
477 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
478 struct hfi1_devdata *dd = dd_from_dev(dev);
479
480 /* dd->serial is already newline terminated in chip.c */
481 return sysfs_emit(buf, fmt: "%s", dd->serial);
482}
483static DEVICE_ATTR_RO(serial);
484
485static ssize_t chip_reset_store(struct device *device,
486 struct device_attribute *attr, const char *buf,
487 size_t count)
488{
489 struct hfi1_ibdev *dev =
490 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
491 struct hfi1_devdata *dd = dd_from_dev(dev);
492 int ret;
493
494 if (count < 5 || memcmp(p: buf, q: "reset", size: 5) || !dd->diag_client) {
495 ret = -EINVAL;
496 goto bail;
497 }
498
499 ret = hfi1_reset_device(dd->unit);
500bail:
501 return ret < 0 ? ret : count;
502}
503static DEVICE_ATTR_WO(chip_reset);
504
505/*
506 * Convert the reported temperature from an integer (reported in
507 * units of 0.25C) to a floating point number.
508 */
509#define temp_d(t) ((t) >> 2)
510#define temp_f(t) (((t)&0x3) * 25u)
511
512/*
513 * Dump tempsense values, in decimal, to ease shell-scripts.
514 */
515static ssize_t tempsense_show(struct device *device,
516 struct device_attribute *attr, char *buf)
517{
518 struct hfi1_ibdev *dev =
519 rdma_device_to_drv_device(device, struct hfi1_ibdev, rdi.ibdev);
520 struct hfi1_devdata *dd = dd_from_dev(dev);
521 struct hfi1_temp temp;
522 int ret;
523
524 ret = hfi1_tempsense_rd(dd, temp: &temp);
525 if (ret)
526 return ret;
527
528 return sysfs_emit(buf, fmt: "%u.%02u %u.%02u %u.%02u %u.%02u %u %u %u\n",
529 temp_d(temp.curr), temp_f(temp.curr),
530 temp_d(temp.lo_lim), temp_f(temp.lo_lim),
531 temp_d(temp.hi_lim), temp_f(temp.hi_lim),
532 temp_d(temp.crit_lim), temp_f(temp.crit_lim),
533 temp.triggers & 0x1,
534 temp.triggers & 0x2,
535 temp.triggers & 0x4);
536}
537static DEVICE_ATTR_RO(tempsense);
538
539/*
540 * end of per-unit (or driver, in some cases, but replicated
541 * per unit) functions
542 */
543
544/* start of per-unit file structures and support code */
545static struct attribute *hfi1_attributes[] = {
546 &dev_attr_hw_rev.attr,
547 &dev_attr_board_id.attr,
548 &dev_attr_nctxts.attr,
549 &dev_attr_nfreectxts.attr,
550 &dev_attr_serial.attr,
551 &dev_attr_boardversion.attr,
552 &dev_attr_tempsense.attr,
553 &dev_attr_chip_reset.attr,
554 NULL,
555};
556
557const struct attribute_group ib_hfi1_attr_group = {
558 .attrs = hfi1_attributes,
559};
560
561const struct attribute_group *hfi1_attr_port_groups[] = {
562 &port_cc_group,
563 &port_sc2vl_group,
564 &port_sl2sc_group,
565 &port_vl2mtu_group,
566 NULL,
567};
568
569struct sde_attribute {
570 struct attribute attr;
571 ssize_t (*show)(struct sdma_engine *sde, char *buf);
572 ssize_t (*store)(struct sdma_engine *sde, const char *buf, size_t cnt);
573};
574
575static ssize_t sde_show(struct kobject *kobj, struct attribute *attr, char *buf)
576{
577 struct sde_attribute *sde_attr =
578 container_of(attr, struct sde_attribute, attr);
579 struct sdma_engine *sde =
580 container_of(kobj, struct sdma_engine, kobj);
581
582 if (!sde_attr->show)
583 return -EINVAL;
584
585 return sde_attr->show(sde, buf);
586}
587
588static ssize_t sde_store(struct kobject *kobj, struct attribute *attr,
589 const char *buf, size_t count)
590{
591 struct sde_attribute *sde_attr =
592 container_of(attr, struct sde_attribute, attr);
593 struct sdma_engine *sde =
594 container_of(kobj, struct sdma_engine, kobj);
595
596 if (!capable(CAP_SYS_ADMIN))
597 return -EPERM;
598
599 if (!sde_attr->store)
600 return -EINVAL;
601
602 return sde_attr->store(sde, buf, count);
603}
604
605static const struct sysfs_ops sde_sysfs_ops = {
606 .show = sde_show,
607 .store = sde_store,
608};
609
610static struct kobj_type sde_ktype = {
611 .sysfs_ops = &sde_sysfs_ops,
612};
613
614#define SDE_ATTR(_name, _mode, _show, _store) \
615 struct sde_attribute sde_attr_##_name = \
616 __ATTR(_name, _mode, _show, _store)
617
618static ssize_t sde_show_cpu_to_sde_map(struct sdma_engine *sde, char *buf)
619{
620 return sdma_get_cpu_to_sde_map(sde, buf);
621}
622
623static ssize_t sde_store_cpu_to_sde_map(struct sdma_engine *sde,
624 const char *buf, size_t count)
625{
626 return sdma_set_cpu_to_sde_map(sde, buf, count);
627}
628
629static ssize_t sde_show_vl(struct sdma_engine *sde, char *buf)
630{
631 int vl;
632
633 vl = sdma_engine_get_vl(sde);
634 if (vl < 0)
635 return vl;
636
637 return sysfs_emit(buf, fmt: "%d\n", vl);
638}
639
640static SDE_ATTR(cpu_list, S_IWUSR | S_IRUGO,
641 sde_show_cpu_to_sde_map,
642 sde_store_cpu_to_sde_map);
643static SDE_ATTR(vl, S_IRUGO, sde_show_vl, NULL);
644
645static struct sde_attribute *sde_attribs[] = {
646 &sde_attr_cpu_list,
647 &sde_attr_vl
648};
649
650/*
651 * Register and create our files in /sys/class/infiniband.
652 */
653int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd)
654{
655 struct ib_device *dev = &dd->verbs_dev.rdi.ibdev;
656 struct device *class_dev = &dev->dev;
657 int i, j, ret;
658
659 for (i = 0; i < dd->num_sdma; i++) {
660 ret = kobject_init_and_add(kobj: &dd->per_sdma[i].kobj,
661 ktype: &sde_ktype, parent: &class_dev->kobj,
662 fmt: "sdma%d", i);
663 if (ret)
664 goto bail;
665
666 for (j = 0; j < ARRAY_SIZE(sde_attribs); j++) {
667 ret = sysfs_create_file(kobj: &dd->per_sdma[i].kobj,
668 attr: &sde_attribs[j]->attr);
669 if (ret)
670 goto bail;
671 }
672 }
673
674 return 0;
675bail:
676 /*
677 * The function kobject_put() will call kobject_del() if the kobject
678 * has been added successfully. The sysfs files created under the
679 * kobject directory will also be removed during the process.
680 */
681 for (; i >= 0; i--)
682 kobject_put(kobj: &dd->per_sdma[i].kobj);
683
684 return ret;
685}
686
687/*
688 * Unregister and remove our files in /sys/class/infiniband.
689 */
690void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *dd)
691{
692 int i;
693
694 /* Unwind operations in hfi1_verbs_register_sysfs() */
695 for (i = 0; i < dd->num_sdma; i++)
696 kobject_put(kobj: &dd->per_sdma[i].kobj);
697}
698

source code of linux/drivers/infiniband/hw/hfi1/sysfs.c