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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);
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 struct bin_attribute *bin_attr, char *buf,
31 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 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 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 BIN_ATTR_RO(cc_setting_bin, PAGE_SIZE);
97
98static struct bin_attribute *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, "%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(buf, "on", 2))
121 ppd->cc_prescan = true;
122 else if (!memcmp(buf, "off", 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, "%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, "%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, "%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, "%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, "%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, "%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, "%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, "%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, "%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(buf, "reset", 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);
525 if (ret)
526 return ret;
527
528 return sysfs_emit(buf, "%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, "%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(&dd->per_sdma[i].kobj,
661 &sde_ktype, &class_dev->kobj,
662 "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(&dd->per_sdma[i].kobj,
668 &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(&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(&dd->per_sdma[i].kobj);
697}
1/*
2 * Copyright(c) 2015, 2016 Intel Corporation.
3 *
4 * This file is provided under a dual BSD/GPLv2 license. When using or
5 * redistributing this file, you may do so under either license.
6 *
7 * GPL LICENSE SUMMARY
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * BSD LICENSE
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
22 * are met:
23 *
24 * - Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * - Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in
28 * the documentation and/or other materials provided with the
29 * distribution.
30 * - Neither the name of Intel Corporation nor the names of its
31 * contributors may be used to endorse or promote products derived
32 * from this software without specific prior written permission.
33 *
34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45 *
46 */
47#include <linux/ctype.h>
48
49#include "hfi.h"
50#include "mad.h"
51#include "trace.h"
52
53/*
54 * Start of per-port congestion control structures and support code
55 */
56
57/*
58 * Congestion control table size followed by table entries
59 */
60static ssize_t read_cc_table_bin(struct file *filp, struct kobject *kobj,
61 struct bin_attribute *bin_attr,
62 char *buf, loff_t pos, size_t count)
63{
64 int ret;
65 struct hfi1_pportdata *ppd =
66 container_of(kobj, struct hfi1_pportdata, pport_cc_kobj);
67 struct cc_state *cc_state;
68
69 ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow)
70 + sizeof(__be16);
71
72 if (pos > ret)
73 return -EINVAL;
74
75 if (count > ret - pos)
76 count = ret - pos;
77
78 if (!count)
79 return count;
80
81 rcu_read_lock();
82 cc_state = get_cc_state(ppd);
83 if (!cc_state) {
84 rcu_read_unlock();
85 return -EINVAL;
86 }
87 memcpy(buf, (void *)&cc_state->cct + pos, count);
88 rcu_read_unlock();
89
90 return count;
91}
92
93static void port_release(struct kobject *kobj)
94{
95 /* nothing to do since memory is freed by hfi1_free_devdata() */
96}
97
98static struct bin_attribute cc_table_bin_attr = {
99 .attr = {.name = "cc_table_bin", .mode = 0444},
100 .read = read_cc_table_bin,
101 .size = PAGE_SIZE,
102};
103
104/*
105 * Congestion settings: port control, control map and an array of 16
106 * entries for the congestion entries - increase, timer, event log
107 * trigger threshold and the minimum injection rate delay.
108 */
109static ssize_t read_cc_setting_bin(struct file *filp, struct kobject *kobj,
110 struct bin_attribute *bin_attr,
111 char *buf, loff_t pos, size_t count)
112{
113 int ret;
114 struct hfi1_pportdata *ppd =
115 container_of(kobj, struct hfi1_pportdata, pport_cc_kobj);
116 struct cc_state *cc_state;
117
118 ret = sizeof(struct opa_congestion_setting_attr_shadow);
119
120 if (pos > ret)
121 return -EINVAL;
122 if (count > ret - pos)
123 count = ret - pos;
124
125 if (!count)
126 return count;
127
128 rcu_read_lock();
129 cc_state = get_cc_state(ppd);
130 if (!cc_state) {
131 rcu_read_unlock();
132 return -EINVAL;
133 }
134 memcpy(buf, (void *)&cc_state->cong_setting + pos, count);
135 rcu_read_unlock();
136
137 return count;
138}
139
140static struct bin_attribute cc_setting_bin_attr = {
141 .attr = {.name = "cc_settings_bin", .mode = 0444},
142 .read = read_cc_setting_bin,
143 .size = PAGE_SIZE,
144};
145
146struct hfi1_port_attr {
147 struct attribute attr;
148 ssize_t (*show)(struct hfi1_pportdata *, char *);
149 ssize_t (*store)(struct hfi1_pportdata *, const char *, size_t);
150};
151
152static ssize_t cc_prescan_show(struct hfi1_pportdata *ppd, char *buf)
153{
154 return sprintf(buf, "%s\n", ppd->cc_prescan ? "on" : "off");
155}
156
157static ssize_t cc_prescan_store(struct hfi1_pportdata *ppd, const char *buf,
158 size_t count)
159{
160 if (!memcmp(buf, "on", 2))
161 ppd->cc_prescan = true;
162 else if (!memcmp(buf, "off", 3))
163 ppd->cc_prescan = false;
164
165 return count;
166}
167
168static struct hfi1_port_attr cc_prescan_attr =
169 __ATTR(cc_prescan, 0600, cc_prescan_show, cc_prescan_store);
170
171static ssize_t cc_attr_show(struct kobject *kobj, struct attribute *attr,
172 char *buf)
173{
174 struct hfi1_port_attr *port_attr =
175 container_of(attr, struct hfi1_port_attr, attr);
176 struct hfi1_pportdata *ppd =
177 container_of(kobj, struct hfi1_pportdata, pport_cc_kobj);
178
179 return port_attr->show(ppd, buf);
180}
181
182static ssize_t cc_attr_store(struct kobject *kobj, struct attribute *attr,
183 const char *buf, size_t count)
184{
185 struct hfi1_port_attr *port_attr =
186 container_of(attr, struct hfi1_port_attr, attr);
187 struct hfi1_pportdata *ppd =
188 container_of(kobj, struct hfi1_pportdata, pport_cc_kobj);
189
190 return port_attr->store(ppd, buf, count);
191}
192
193static const struct sysfs_ops port_cc_sysfs_ops = {
194 .show = cc_attr_show,
195 .store = cc_attr_store
196};
197
198static struct attribute *port_cc_default_attributes[] = {
199 &cc_prescan_attr.attr
200};
201
202static struct kobj_type port_cc_ktype = {
203 .release = port_release,
204 .sysfs_ops = &port_cc_sysfs_ops,
205 .default_attrs = port_cc_default_attributes
206};
207
208/* Start sc2vl */
209#define HFI1_SC2VL_ATTR(N) \
210 static struct hfi1_sc2vl_attr hfi1_sc2vl_attr_##N = { \
211 .attr = { .name = __stringify(N), .mode = 0444 }, \
212 .sc = N \
213 }
214
215struct hfi1_sc2vl_attr {
216 struct attribute attr;
217 int sc;
218};
219
220HFI1_SC2VL_ATTR(0);
221HFI1_SC2VL_ATTR(1);
222HFI1_SC2VL_ATTR(2);
223HFI1_SC2VL_ATTR(3);
224HFI1_SC2VL_ATTR(4);
225HFI1_SC2VL_ATTR(5);
226HFI1_SC2VL_ATTR(6);
227HFI1_SC2VL_ATTR(7);
228HFI1_SC2VL_ATTR(8);
229HFI1_SC2VL_ATTR(9);
230HFI1_SC2VL_ATTR(10);
231HFI1_SC2VL_ATTR(11);
232HFI1_SC2VL_ATTR(12);
233HFI1_SC2VL_ATTR(13);
234HFI1_SC2VL_ATTR(14);
235HFI1_SC2VL_ATTR(15);
236HFI1_SC2VL_ATTR(16);
237HFI1_SC2VL_ATTR(17);
238HFI1_SC2VL_ATTR(18);
239HFI1_SC2VL_ATTR(19);
240HFI1_SC2VL_ATTR(20);
241HFI1_SC2VL_ATTR(21);
242HFI1_SC2VL_ATTR(22);
243HFI1_SC2VL_ATTR(23);
244HFI1_SC2VL_ATTR(24);
245HFI1_SC2VL_ATTR(25);
246HFI1_SC2VL_ATTR(26);
247HFI1_SC2VL_ATTR(27);
248HFI1_SC2VL_ATTR(28);
249HFI1_SC2VL_ATTR(29);
250HFI1_SC2VL_ATTR(30);
251HFI1_SC2VL_ATTR(31);
252
253static struct attribute *sc2vl_default_attributes[] = {
254 &hfi1_sc2vl_attr_0.attr,
255 &hfi1_sc2vl_attr_1.attr,
256 &hfi1_sc2vl_attr_2.attr,
257 &hfi1_sc2vl_attr_3.attr,
258 &hfi1_sc2vl_attr_4.attr,
259 &hfi1_sc2vl_attr_5.attr,
260 &hfi1_sc2vl_attr_6.attr,
261 &hfi1_sc2vl_attr_7.attr,
262 &hfi1_sc2vl_attr_8.attr,
263 &hfi1_sc2vl_attr_9.attr,
264 &hfi1_sc2vl_attr_10.attr,
265 &hfi1_sc2vl_attr_11.attr,
266 &hfi1_sc2vl_attr_12.attr,
267 &hfi1_sc2vl_attr_13.attr,
268 &hfi1_sc2vl_attr_14.attr,
269 &hfi1_sc2vl_attr_15.attr,
270 &hfi1_sc2vl_attr_16.attr,
271 &hfi1_sc2vl_attr_17.attr,
272 &hfi1_sc2vl_attr_18.attr,
273 &hfi1_sc2vl_attr_19.attr,
274 &hfi1_sc2vl_attr_20.attr,
275 &hfi1_sc2vl_attr_21.attr,
276 &hfi1_sc2vl_attr_22.attr,
277 &hfi1_sc2vl_attr_23.attr,
278 &hfi1_sc2vl_attr_24.attr,
279 &hfi1_sc2vl_attr_25.attr,
280 &hfi1_sc2vl_attr_26.attr,
281 &hfi1_sc2vl_attr_27.attr,
282 &hfi1_sc2vl_attr_28.attr,
283 &hfi1_sc2vl_attr_29.attr,
284 &hfi1_sc2vl_attr_30.attr,
285 &hfi1_sc2vl_attr_31.attr,
286 NULL
287};
288
289static ssize_t sc2vl_attr_show(struct kobject *kobj, struct attribute *attr,
290 char *buf)
291{
292 struct hfi1_sc2vl_attr *sattr =
293 container_of(attr, struct hfi1_sc2vl_attr, attr);
294 struct hfi1_pportdata *ppd =
295 container_of(kobj, struct hfi1_pportdata, sc2vl_kobj);
296 struct hfi1_devdata *dd = ppd->dd;
297
298 return sprintf(buf, "%u\n", *((u8 *)dd->sc2vl + sattr->sc));
299}
300
301static const struct sysfs_ops hfi1_sc2vl_ops = {
302 .show = sc2vl_attr_show,
303};
304
305static struct kobj_type hfi1_sc2vl_ktype = {
306 .release = port_release,
307 .sysfs_ops = &hfi1_sc2vl_ops,
308 .default_attrs = sc2vl_default_attributes
309};
310
311/* End sc2vl */
312
313/* Start sl2sc */
314#define HFI1_SL2SC_ATTR(N) \
315 static struct hfi1_sl2sc_attr hfi1_sl2sc_attr_##N = { \
316 .attr = { .name = __stringify(N), .mode = 0444 }, \
317 .sl = N \
318 }
319
320struct hfi1_sl2sc_attr {
321 struct attribute attr;
322 int sl;
323};
324
325HFI1_SL2SC_ATTR(0);
326HFI1_SL2SC_ATTR(1);
327HFI1_SL2SC_ATTR(2);
328HFI1_SL2SC_ATTR(3);
329HFI1_SL2SC_ATTR(4);
330HFI1_SL2SC_ATTR(5);
331HFI1_SL2SC_ATTR(6);
332HFI1_SL2SC_ATTR(7);
333HFI1_SL2SC_ATTR(8);
334HFI1_SL2SC_ATTR(9);
335HFI1_SL2SC_ATTR(10);
336HFI1_SL2SC_ATTR(11);
337HFI1_SL2SC_ATTR(12);
338HFI1_SL2SC_ATTR(13);
339HFI1_SL2SC_ATTR(14);
340HFI1_SL2SC_ATTR(15);
341HFI1_SL2SC_ATTR(16);
342HFI1_SL2SC_ATTR(17);
343HFI1_SL2SC_ATTR(18);
344HFI1_SL2SC_ATTR(19);
345HFI1_SL2SC_ATTR(20);
346HFI1_SL2SC_ATTR(21);
347HFI1_SL2SC_ATTR(22);
348HFI1_SL2SC_ATTR(23);
349HFI1_SL2SC_ATTR(24);
350HFI1_SL2SC_ATTR(25);
351HFI1_SL2SC_ATTR(26);
352HFI1_SL2SC_ATTR(27);
353HFI1_SL2SC_ATTR(28);
354HFI1_SL2SC_ATTR(29);
355HFI1_SL2SC_ATTR(30);
356HFI1_SL2SC_ATTR(31);
357
358static struct attribute *sl2sc_default_attributes[] = {
359 &hfi1_sl2sc_attr_0.attr,
360 &hfi1_sl2sc_attr_1.attr,
361 &hfi1_sl2sc_attr_2.attr,
362 &hfi1_sl2sc_attr_3.attr,
363 &hfi1_sl2sc_attr_4.attr,
364 &hfi1_sl2sc_attr_5.attr,
365 &hfi1_sl2sc_attr_6.attr,
366 &hfi1_sl2sc_attr_7.attr,
367 &hfi1_sl2sc_attr_8.attr,
368 &hfi1_sl2sc_attr_9.attr,
369 &hfi1_sl2sc_attr_10.attr,
370 &hfi1_sl2sc_attr_11.attr,
371 &hfi1_sl2sc_attr_12.attr,
372 &hfi1_sl2sc_attr_13.attr,
373 &hfi1_sl2sc_attr_14.attr,
374 &hfi1_sl2sc_attr_15.attr,
375 &hfi1_sl2sc_attr_16.attr,
376 &hfi1_sl2sc_attr_17.attr,
377 &hfi1_sl2sc_attr_18.attr,
378 &hfi1_sl2sc_attr_19.attr,
379 &hfi1_sl2sc_attr_20.attr,
380 &hfi1_sl2sc_attr_21.attr,
381 &hfi1_sl2sc_attr_22.attr,
382 &hfi1_sl2sc_attr_23.attr,
383 &hfi1_sl2sc_attr_24.attr,
384 &hfi1_sl2sc_attr_25.attr,
385 &hfi1_sl2sc_attr_26.attr,
386 &hfi1_sl2sc_attr_27.attr,
387 &hfi1_sl2sc_attr_28.attr,
388 &hfi1_sl2sc_attr_29.attr,
389 &hfi1_sl2sc_attr_30.attr,
390 &hfi1_sl2sc_attr_31.attr,
391 NULL
392};
393
394static ssize_t sl2sc_attr_show(struct kobject *kobj, struct attribute *attr,
395 char *buf)
396{
397 struct hfi1_sl2sc_attr *sattr =
398 container_of(attr, struct hfi1_sl2sc_attr, attr);
399 struct hfi1_pportdata *ppd =
400 container_of(kobj, struct hfi1_pportdata, sl2sc_kobj);
401 struct hfi1_ibport *ibp = &ppd->ibport_data;
402
403 return sprintf(buf, "%u\n", ibp->sl_to_sc[sattr->sl]);
404}
405
406static const struct sysfs_ops hfi1_sl2sc_ops = {
407 .show = sl2sc_attr_show,
408};
409
410static struct kobj_type hfi1_sl2sc_ktype = {
411 .release = port_release,
412 .sysfs_ops = &hfi1_sl2sc_ops,
413 .default_attrs = sl2sc_default_attributes
414};
415
416/* End sl2sc */
417
418/* Start vl2mtu */
419
420#define HFI1_VL2MTU_ATTR(N) \
421 static struct hfi1_vl2mtu_attr hfi1_vl2mtu_attr_##N = { \
422 .attr = { .name = __stringify(N), .mode = 0444 }, \
423 .vl = N \
424 }
425
426struct hfi1_vl2mtu_attr {
427 struct attribute attr;
428 int vl;
429};
430
431HFI1_VL2MTU_ATTR(0);
432HFI1_VL2MTU_ATTR(1);
433HFI1_VL2MTU_ATTR(2);
434HFI1_VL2MTU_ATTR(3);
435HFI1_VL2MTU_ATTR(4);
436HFI1_VL2MTU_ATTR(5);
437HFI1_VL2MTU_ATTR(6);
438HFI1_VL2MTU_ATTR(7);
439HFI1_VL2MTU_ATTR(8);
440HFI1_VL2MTU_ATTR(9);
441HFI1_VL2MTU_ATTR(10);
442HFI1_VL2MTU_ATTR(11);
443HFI1_VL2MTU_ATTR(12);
444HFI1_VL2MTU_ATTR(13);
445HFI1_VL2MTU_ATTR(14);
446HFI1_VL2MTU_ATTR(15);
447
448static struct attribute *vl2mtu_default_attributes[] = {
449 &hfi1_vl2mtu_attr_0.attr,
450 &hfi1_vl2mtu_attr_1.attr,
451 &hfi1_vl2mtu_attr_2.attr,
452 &hfi1_vl2mtu_attr_3.attr,
453 &hfi1_vl2mtu_attr_4.attr,
454 &hfi1_vl2mtu_attr_5.attr,
455 &hfi1_vl2mtu_attr_6.attr,
456 &hfi1_vl2mtu_attr_7.attr,
457 &hfi1_vl2mtu_attr_8.attr,
458 &hfi1_vl2mtu_attr_9.attr,
459 &hfi1_vl2mtu_attr_10.attr,
460 &hfi1_vl2mtu_attr_11.attr,
461 &hfi1_vl2mtu_attr_12.attr,
462 &hfi1_vl2mtu_attr_13.attr,
463 &hfi1_vl2mtu_attr_14.attr,
464 &hfi1_vl2mtu_attr_15.attr,
465 NULL
466};
467
468static ssize_t vl2mtu_attr_show(struct kobject *kobj, struct attribute *attr,
469 char *buf)
470{
471 struct hfi1_vl2mtu_attr *vlattr =
472 container_of(attr, struct hfi1_vl2mtu_attr, attr);
473 struct hfi1_pportdata *ppd =
474 container_of(kobj, struct hfi1_pportdata, vl2mtu_kobj);
475 struct hfi1_devdata *dd = ppd->dd;
476
477 return sprintf(buf, "%u\n", dd->vld[vlattr->vl].mtu);
478}
479
480static const struct sysfs_ops hfi1_vl2mtu_ops = {
481 .show = vl2mtu_attr_show,
482};
483
484static struct kobj_type hfi1_vl2mtu_ktype = {
485 .release = port_release,
486 .sysfs_ops = &hfi1_vl2mtu_ops,
487 .default_attrs = vl2mtu_default_attributes
488};
489
490/* end of per-port file structures and support code */
491
492/*
493 * Start of per-unit (or driver, in some cases, but replicated
494 * per unit) functions (these get a device *)
495 */
496static ssize_t show_rev(struct device *device, struct device_attribute *attr,
497 char *buf)
498{
499 struct hfi1_ibdev *dev =
500 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
501
502 return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev);
503}
504
505static ssize_t show_hfi(struct device *device, struct device_attribute *attr,
506 char *buf)
507{
508 struct hfi1_ibdev *dev =
509 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
510 struct hfi1_devdata *dd = dd_from_dev(dev);
511 int ret;
512
513 if (!dd->boardname)
514 ret = -EINVAL;
515 else
516 ret = scnprintf(buf, PAGE_SIZE, "%s\n", dd->boardname);
517 return ret;
518}
519
520static ssize_t show_boardversion(struct device *device,
521 struct device_attribute *attr, char *buf)
522{
523 struct hfi1_ibdev *dev =
524 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
525 struct hfi1_devdata *dd = dd_from_dev(dev);
526
527 /* The string printed here is already newline-terminated. */
528 return scnprintf(buf, PAGE_SIZE, "%s", dd->boardversion);
529}
530
531static ssize_t show_nctxts(struct device *device,
532 struct device_attribute *attr, char *buf)
533{
534 struct hfi1_ibdev *dev =
535 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
536 struct hfi1_devdata *dd = dd_from_dev(dev);
537
538 /*
539 * Return the smaller of send and receive contexts.
540 * Normally, user level applications would require both a send
541 * and a receive context, so returning the smaller of the two counts
542 * give a more accurate picture of total contexts available.
543 */
544 return scnprintf(buf, PAGE_SIZE, "%u\n",
545 min(dd->num_rcv_contexts - dd->first_user_ctxt,
546 (u32)dd->sc_sizes[SC_USER].count));
547}
548
549static ssize_t show_nfreectxts(struct device *device,
550 struct device_attribute *attr, char *buf)
551{
552 struct hfi1_ibdev *dev =
553 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
554 struct hfi1_devdata *dd = dd_from_dev(dev);
555
556 /* Return the number of free user ports (contexts) available. */
557 return scnprintf(buf, PAGE_SIZE, "%u\n", dd->freectxts);
558}
559
560static ssize_t show_serial(struct device *device,
561 struct device_attribute *attr, char *buf)
562{
563 struct hfi1_ibdev *dev =
564 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
565 struct hfi1_devdata *dd = dd_from_dev(dev);
566
567 return scnprintf(buf, PAGE_SIZE, "%s", dd->serial);
568}
569
570static ssize_t store_chip_reset(struct device *device,
571 struct device_attribute *attr, const char *buf,
572 size_t count)
573{
574 struct hfi1_ibdev *dev =
575 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
576 struct hfi1_devdata *dd = dd_from_dev(dev);
577 int ret;
578
579 if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) {
580 ret = -EINVAL;
581 goto bail;
582 }
583
584 ret = hfi1_reset_device(dd->unit);
585bail:
586 return ret < 0 ? ret : count;
587}
588
589/*
590 * Convert the reported temperature from an integer (reported in
591 * units of 0.25C) to a floating point number.
592 */
593#define temp2str(temp, buf, size, idx) \
594 scnprintf((buf) + (idx), (size) - (idx), "%u.%02u ", \
595 ((temp) >> 2), ((temp) & 0x3) * 25)
596
597/*
598 * Dump tempsense values, in decimal, to ease shell-scripts.
599 */
600static ssize_t show_tempsense(struct device *device,
601 struct device_attribute *attr, char *buf)
602{
603 struct hfi1_ibdev *dev =
604 container_of(device, struct hfi1_ibdev, rdi.ibdev.dev);
605 struct hfi1_devdata *dd = dd_from_dev(dev);
606 struct hfi1_temp temp;
607 int ret;
608
609 ret = hfi1_tempsense_rd(dd, &temp);
610 if (!ret) {
611 int idx = 0;
612
613 idx += temp2str(temp.curr, buf, PAGE_SIZE, idx);
614 idx += temp2str(temp.lo_lim, buf, PAGE_SIZE, idx);
615 idx += temp2str(temp.hi_lim, buf, PAGE_SIZE, idx);
616 idx += temp2str(temp.crit_lim, buf, PAGE_SIZE, idx);
617 idx += scnprintf(buf + idx, PAGE_SIZE - idx,
618 "%u %u %u\n", temp.triggers & 0x1,
619 temp.triggers & 0x2, temp.triggers & 0x4);
620 ret = idx;
621 }
622 return ret;
623}
624
625/*
626 * end of per-unit (or driver, in some cases, but replicated
627 * per unit) functions
628 */
629
630/* start of per-unit file structures and support code */
631static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
632static DEVICE_ATTR(board_id, S_IRUGO, show_hfi, NULL);
633static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL);
634static DEVICE_ATTR(nfreectxts, S_IRUGO, show_nfreectxts, NULL);
635static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
636static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
637static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL);
638static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset);
639
640static struct device_attribute *hfi1_attributes[] = {
641 &dev_attr_hw_rev,
642 &dev_attr_board_id,
643 &dev_attr_nctxts,
644 &dev_attr_nfreectxts,
645 &dev_attr_serial,
646 &dev_attr_boardversion,
647 &dev_attr_tempsense,
648 &dev_attr_chip_reset,
649};
650
651int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num,
652 struct kobject *kobj)
653{
654 struct hfi1_pportdata *ppd;
655 struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
656 int ret;
657
658 if (!port_num || port_num > dd->num_pports) {
659 dd_dev_err(dd,
660 "Skipping infiniband class with invalid port %u\n",
661 port_num);
662 return -ENODEV;
663 }
664 ppd = &dd->pport[port_num - 1];
665
666 ret = kobject_init_and_add(&ppd->sc2vl_kobj, &hfi1_sc2vl_ktype, kobj,
667 "sc2vl");
668 if (ret) {
669 dd_dev_err(dd,
670 "Skipping sc2vl sysfs info, (err %d) port %u\n",
671 ret, port_num);
672 goto bail;
673 }
674 kobject_uevent(&ppd->sc2vl_kobj, KOBJ_ADD);
675
676 ret = kobject_init_and_add(&ppd->sl2sc_kobj, &hfi1_sl2sc_ktype, kobj,
677 "sl2sc");
678 if (ret) {
679 dd_dev_err(dd,
680 "Skipping sl2sc sysfs info, (err %d) port %u\n",
681 ret, port_num);
682 goto bail_sc2vl;
683 }
684 kobject_uevent(&ppd->sl2sc_kobj, KOBJ_ADD);
685
686 ret = kobject_init_and_add(&ppd->vl2mtu_kobj, &hfi1_vl2mtu_ktype, kobj,
687 "vl2mtu");
688 if (ret) {
689 dd_dev_err(dd,
690 "Skipping vl2mtu sysfs info, (err %d) port %u\n",
691 ret, port_num);
692 goto bail_sl2sc;
693 }
694 kobject_uevent(&ppd->vl2mtu_kobj, KOBJ_ADD);
695
696 ret = kobject_init_and_add(&ppd->pport_cc_kobj, &port_cc_ktype,
697 kobj, "CCMgtA");
698 if (ret) {
699 dd_dev_err(dd,
700 "Skipping Congestion Control sysfs info, (err %d) port %u\n",
701 ret, port_num);
702 goto bail_vl2mtu;
703 }
704
705 kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
706
707 ret = sysfs_create_bin_file(&ppd->pport_cc_kobj, &cc_setting_bin_attr);
708 if (ret) {
709 dd_dev_err(dd,
710 "Skipping Congestion Control setting sysfs info, (err %d) port %u\n",
711 ret, port_num);
712 goto bail_cc;
713 }
714
715 ret = sysfs_create_bin_file(&ppd->pport_cc_kobj, &cc_table_bin_attr);
716 if (ret) {
717 dd_dev_err(dd,
718 "Skipping Congestion Control table sysfs info, (err %d) port %u\n",
719 ret, port_num);
720 goto bail_cc_entry_bin;
721 }
722
723 dd_dev_info(dd,
724 "Congestion Control Agent enabled for port %d\n",
725 port_num);
726
727 return 0;
728
729bail_cc_entry_bin:
730 sysfs_remove_bin_file(&ppd->pport_cc_kobj,
731 &cc_setting_bin_attr);
732bail_cc:
733 kobject_put(&ppd->pport_cc_kobj);
734bail_vl2mtu:
735 kobject_put(&ppd->vl2mtu_kobj);
736bail_sl2sc:
737 kobject_put(&ppd->sl2sc_kobj);
738bail_sc2vl:
739 kobject_put(&ppd->sc2vl_kobj);
740bail:
741 return ret;
742}
743
744struct sde_attribute {
745 struct attribute attr;
746 ssize_t (*show)(struct sdma_engine *sde, char *buf);
747 ssize_t (*store)(struct sdma_engine *sde, const char *buf, size_t cnt);
748};
749
750static ssize_t sde_show(struct kobject *kobj, struct attribute *attr, char *buf)
751{
752 struct sde_attribute *sde_attr =
753 container_of(attr, struct sde_attribute, attr);
754 struct sdma_engine *sde =
755 container_of(kobj, struct sdma_engine, kobj);
756
757 if (!sde_attr->show)
758 return -EINVAL;
759
760 return sde_attr->show(sde, buf);
761}
762
763static ssize_t sde_store(struct kobject *kobj, struct attribute *attr,
764 const char *buf, size_t count)
765{
766 struct sde_attribute *sde_attr =
767 container_of(attr, struct sde_attribute, attr);
768 struct sdma_engine *sde =
769 container_of(kobj, struct sdma_engine, kobj);
770
771 if (!capable(CAP_SYS_ADMIN))
772 return -EPERM;
773
774 if (!sde_attr->store)
775 return -EINVAL;
776
777 return sde_attr->store(sde, buf, count);
778}
779
780static const struct sysfs_ops sde_sysfs_ops = {
781 .show = sde_show,
782 .store = sde_store,
783};
784
785static struct kobj_type sde_ktype = {
786 .sysfs_ops = &sde_sysfs_ops,
787};
788
789#define SDE_ATTR(_name, _mode, _show, _store) \
790 struct sde_attribute sde_attr_##_name = \
791 __ATTR(_name, _mode, _show, _store)
792
793static ssize_t sde_show_cpu_to_sde_map(struct sdma_engine *sde, char *buf)
794{
795 return sdma_get_cpu_to_sde_map(sde, buf);
796}
797
798static ssize_t sde_store_cpu_to_sde_map(struct sdma_engine *sde,
799 const char *buf, size_t count)
800{
801 return sdma_set_cpu_to_sde_map(sde, buf, count);
802}
803
804static ssize_t sde_show_vl(struct sdma_engine *sde, char *buf)
805{
806 int vl;
807
808 vl = sdma_engine_get_vl(sde);
809 if (vl < 0)
810 return vl;
811
812 return snprintf(buf, PAGE_SIZE, "%d\n", vl);
813}
814
815static SDE_ATTR(cpu_list, S_IWUSR | S_IRUGO,
816 sde_show_cpu_to_sde_map,
817 sde_store_cpu_to_sde_map);
818static SDE_ATTR(vl, S_IRUGO, sde_show_vl, NULL);
819
820static struct sde_attribute *sde_attribs[] = {
821 &sde_attr_cpu_list,
822 &sde_attr_vl
823};
824
825/*
826 * Register and create our files in /sys/class/infiniband.
827 */
828int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd)
829{
830 struct ib_device *dev = &dd->verbs_dev.rdi.ibdev;
831 struct device *class_dev = &dev->dev;
832 int i, j, ret;
833
834 for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i) {
835 ret = device_create_file(&dev->dev, hfi1_attributes[i]);
836 if (ret)
837 goto bail;
838 }
839
840 for (i = 0; i < dd->num_sdma; i++) {
841 ret = kobject_init_and_add(&dd->per_sdma[i].kobj,
842 &sde_ktype, &class_dev->kobj,
843 "sdma%d", i);
844 if (ret)
845 goto bail;
846
847 for (j = 0; j < ARRAY_SIZE(sde_attribs); j++) {
848 ret = sysfs_create_file(&dd->per_sdma[i].kobj,
849 &sde_attribs[j]->attr);
850 if (ret)
851 goto bail;
852 }
853 }
854
855 return 0;
856bail:
857 for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i)
858 device_remove_file(&dev->dev, hfi1_attributes[i]);
859
860 for (i = 0; i < dd->num_sdma; i++)
861 kobject_del(&dd->per_sdma[i].kobj);
862
863 return ret;
864}
865
866/*
867 * Unregister and remove our files in /sys/class/infiniband.
868 */
869void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *dd)
870{
871 struct hfi1_pportdata *ppd;
872 int i;
873
874 for (i = 0; i < dd->num_pports; i++) {
875 ppd = &dd->pport[i];
876
877 sysfs_remove_bin_file(&ppd->pport_cc_kobj,
878 &cc_setting_bin_attr);
879 sysfs_remove_bin_file(&ppd->pport_cc_kobj,
880 &cc_table_bin_attr);
881 kobject_put(&ppd->pport_cc_kobj);
882 kobject_put(&ppd->vl2mtu_kobj);
883 kobject_put(&ppd->sl2sc_kobj);
884 kobject_put(&ppd->sc2vl_kobj);
885 }
886}