2 * Copyright(c) 2015-2017 Intel Corporation.
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.
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.
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.
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
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
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.
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,
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40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
47 #include <linux/debugfs.h>
48 #include <linux/seq_file.h>
49 #include <linux/kernel.h>
50 #include <linux/export.h>
51 #include <linux/module.h>
52 #include <linux/string.h>
53 #include <linux/types.h>
54 #include <linux/ratelimit.h>
55 #include <linux/fault-inject.h>
64 static struct dentry *hfi1_dbg_root;
66 /* wrappers to enforce srcu in seq file */
67 static ssize_t hfi1_seq_read(
73 struct dentry *d = file->f_path.dentry;
77 r = debugfs_use_file_start(d, &srcu_idx);
79 r = seq_read(file, buf, size, ppos);
80 debugfs_use_file_finish(srcu_idx);
84 static loff_t hfi1_seq_lseek(
89 struct dentry *d = file->f_path.dentry;
93 r = debugfs_use_file_start(d, &srcu_idx);
95 r = seq_lseek(file, offset, whence);
96 debugfs_use_file_finish(srcu_idx);
100 #define private2dd(file) (file_inode(file)->i_private)
101 #define private2ppd(file) (file_inode(file)->i_private)
103 #define DEBUGFS_SEQ_FILE_OPS(name) \
104 static const struct seq_operations _##name##_seq_ops = { \
105 .start = _##name##_seq_start, \
106 .next = _##name##_seq_next, \
107 .stop = _##name##_seq_stop, \
108 .show = _##name##_seq_show \
111 #define DEBUGFS_SEQ_FILE_OPEN(name) \
112 static int _##name##_open(struct inode *inode, struct file *s) \
114 struct seq_file *seq; \
116 ret = seq_open(s, &_##name##_seq_ops); \
119 seq = s->private_data; \
120 seq->private = inode->i_private; \
124 #define DEBUGFS_FILE_OPS(name) \
125 static const struct file_operations _##name##_file_ops = { \
126 .owner = THIS_MODULE, \
127 .open = _##name##_open, \
128 .read = hfi1_seq_read, \
129 .llseek = hfi1_seq_lseek, \
130 .release = seq_release \
133 #define DEBUGFS_FILE_CREATE(name, parent, data, ops, mode) \
135 struct dentry *ent; \
136 ent = debugfs_create_file(name, mode, parent, \
139 pr_warn("create of %s failed\n", name); \
142 #define DEBUGFS_SEQ_FILE_CREATE(name, parent, data) \
143 DEBUGFS_FILE_CREATE(#name, parent, data, &_##name##_file_ops, S_IRUGO)
145 static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
147 struct hfi1_opcode_stats_perctx *opstats;
149 if (*pos >= ARRAY_SIZE(opstats->stats))
154 static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
156 struct hfi1_opcode_stats_perctx *opstats;
159 if (*pos >= ARRAY_SIZE(opstats->stats))
164 static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
168 static int opcode_stats_show(struct seq_file *s, u8 i, u64 packets, u64 bytes)
170 if (!packets && !bytes)
172 seq_printf(s, "%02x %llu/%llu\n", i,
173 (unsigned long long)packets,
174 (unsigned long long)bytes);
179 static int _opcode_stats_seq_show(struct seq_file *s, void *v)
183 u64 n_packets = 0, n_bytes = 0;
184 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
185 struct hfi1_devdata *dd = dd_from_dev(ibd);
186 struct hfi1_ctxtdata *rcd;
188 for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) {
189 rcd = hfi1_rcd_get_by_index(dd, j);
191 n_packets += rcd->opstats->stats[i].n_packets;
192 n_bytes += rcd->opstats->stats[i].n_bytes;
196 return opcode_stats_show(s, i, n_packets, n_bytes);
199 DEBUGFS_SEQ_FILE_OPS(opcode_stats);
200 DEBUGFS_SEQ_FILE_OPEN(opcode_stats)
201 DEBUGFS_FILE_OPS(opcode_stats);
203 static void *_tx_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
205 return _opcode_stats_seq_start(s, pos);
208 static void *_tx_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
210 return _opcode_stats_seq_next(s, v, pos);
213 static void _tx_opcode_stats_seq_stop(struct seq_file *s, void *v)
217 static int _tx_opcode_stats_seq_show(struct seq_file *s, void *v)
222 u64 n_packets = 0, n_bytes = 0;
223 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
224 struct hfi1_devdata *dd = dd_from_dev(ibd);
226 for_each_possible_cpu(j) {
227 struct hfi1_opcode_stats_perctx *s =
228 per_cpu_ptr(dd->tx_opstats, j);
229 n_packets += s->stats[i].n_packets;
230 n_bytes += s->stats[i].n_bytes;
232 return opcode_stats_show(s, i, n_packets, n_bytes);
235 DEBUGFS_SEQ_FILE_OPS(tx_opcode_stats);
236 DEBUGFS_SEQ_FILE_OPEN(tx_opcode_stats)
237 DEBUGFS_FILE_OPS(tx_opcode_stats);
239 static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
241 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
242 struct hfi1_devdata *dd = dd_from_dev(ibd);
245 return SEQ_START_TOKEN;
246 if (*pos >= dd->first_dyn_alloc_ctxt)
251 static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
253 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
254 struct hfi1_devdata *dd = dd_from_dev(ibd);
256 if (v == SEQ_START_TOKEN)
260 if (*pos >= dd->first_dyn_alloc_ctxt)
265 static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
267 /* nothing allocated */
270 static int _ctx_stats_seq_show(struct seq_file *s, void *v)
275 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
276 struct hfi1_devdata *dd = dd_from_dev(ibd);
277 struct hfi1_ctxtdata *rcd;
279 if (v == SEQ_START_TOKEN) {
280 seq_puts(s, "Ctx:npkts\n");
287 rcd = hfi1_rcd_get_by_index_safe(dd, i);
291 for (j = 0; j < ARRAY_SIZE(rcd->opstats->stats); j++)
292 n_packets += rcd->opstats->stats[j].n_packets;
299 seq_printf(s, " %llu:%llu\n", i, n_packets);
303 DEBUGFS_SEQ_FILE_OPS(ctx_stats);
304 DEBUGFS_SEQ_FILE_OPEN(ctx_stats)
305 DEBUGFS_FILE_OPS(ctx_stats);
307 static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
310 struct rvt_qp_iter *iter;
313 iter = rvt_qp_iter_init(s->private, 0, NULL);
315 /* stop calls rcu_read_unlock */
322 if (rvt_qp_iter_next(iter)) {
331 static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
335 struct rvt_qp_iter *iter = iter_ptr;
339 if (rvt_qp_iter_next(iter)) {
347 static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
353 static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
355 struct rvt_qp_iter *iter = iter_ptr;
360 qp_iter_print(s, iter);
365 DEBUGFS_SEQ_FILE_OPS(qp_stats);
366 DEBUGFS_SEQ_FILE_OPEN(qp_stats)
367 DEBUGFS_FILE_OPS(qp_stats);
369 static void *_sdes_seq_start(struct seq_file *s, loff_t *pos)
371 struct hfi1_ibdev *ibd;
372 struct hfi1_devdata *dd;
374 ibd = (struct hfi1_ibdev *)s->private;
375 dd = dd_from_dev(ibd);
376 if (!dd->per_sdma || *pos >= dd->num_sdma)
381 static void *_sdes_seq_next(struct seq_file *s, void *v, loff_t *pos)
383 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
384 struct hfi1_devdata *dd = dd_from_dev(ibd);
387 if (!dd->per_sdma || *pos >= dd->num_sdma)
392 static void _sdes_seq_stop(struct seq_file *s, void *v)
396 static int _sdes_seq_show(struct seq_file *s, void *v)
398 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
399 struct hfi1_devdata *dd = dd_from_dev(ibd);
403 sdma_seqfile_dump_sde(s, &dd->per_sdma[i]);
407 DEBUGFS_SEQ_FILE_OPS(sdes);
408 DEBUGFS_SEQ_FILE_OPEN(sdes)
409 DEBUGFS_FILE_OPS(sdes);
411 static void *_rcds_seq_start(struct seq_file *s, loff_t *pos)
413 struct hfi1_ibdev *ibd;
414 struct hfi1_devdata *dd;
416 ibd = (struct hfi1_ibdev *)s->private;
417 dd = dd_from_dev(ibd);
418 if (!dd->rcd || *pos >= dd->n_krcv_queues)
423 static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos)
425 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
426 struct hfi1_devdata *dd = dd_from_dev(ibd);
429 if (!dd->rcd || *pos >= dd->n_krcv_queues)
434 static void _rcds_seq_stop(struct seq_file *s, void *v)
438 static int _rcds_seq_show(struct seq_file *s, void *v)
440 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
441 struct hfi1_devdata *dd = dd_from_dev(ibd);
442 struct hfi1_ctxtdata *rcd;
446 rcd = hfi1_rcd_get_by_index_safe(dd, i);
448 seqfile_dump_rcd(s, rcd);
453 DEBUGFS_SEQ_FILE_OPS(rcds);
454 DEBUGFS_SEQ_FILE_OPEN(rcds)
455 DEBUGFS_FILE_OPS(rcds);
457 /* read the per-device counters */
458 static ssize_t dev_counters_read(struct file *file, char __user *buf,
459 size_t count, loff_t *ppos)
463 struct hfi1_devdata *dd;
466 dd = private2dd(file);
467 avail = hfi1_read_cntrs(dd, NULL, &counters);
468 rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
472 /* read the per-device counters */
473 static ssize_t dev_names_read(struct file *file, char __user *buf,
474 size_t count, loff_t *ppos)
478 struct hfi1_devdata *dd;
481 dd = private2dd(file);
482 avail = hfi1_read_cntrs(dd, &names, NULL);
483 rval = simple_read_from_buffer(buf, count, ppos, names, avail);
487 struct counter_info {
489 const struct file_operations ops;
493 * Could use file_inode(file)->i_ino to figure out which file,
494 * instead of separate routine for each, but for now, this works...
497 /* read the per-port names (same for each port) */
498 static ssize_t portnames_read(struct file *file, char __user *buf,
499 size_t count, loff_t *ppos)
503 struct hfi1_devdata *dd;
506 dd = private2dd(file);
507 avail = hfi1_read_portcntrs(dd->pport, &names, NULL);
508 rval = simple_read_from_buffer(buf, count, ppos, names, avail);
512 /* read the per-port counters */
513 static ssize_t portcntrs_debugfs_read(struct file *file, char __user *buf,
514 size_t count, loff_t *ppos)
518 struct hfi1_pportdata *ppd;
521 ppd = private2ppd(file);
522 avail = hfi1_read_portcntrs(ppd, NULL, &counters);
523 rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
527 static void check_dyn_flag(u64 scratch0, char *p, int size, int *used,
528 int this_hfi, int hfi, u32 flag, const char *what)
532 mask = flag << (hfi ? CR_DYN_SHIFT : 0);
533 if (scratch0 & mask) {
534 *used += scnprintf(p + *used, size - *used,
535 " 0x%08x - HFI%d %s in use, %s device\n",
537 this_hfi == hfi ? "this" : "other");
541 static ssize_t asic_flags_read(struct file *file, char __user *buf,
542 size_t count, loff_t *ppos)
544 struct hfi1_pportdata *ppd;
545 struct hfi1_devdata *dd;
553 ppd = private2ppd(file);
557 tmp = kmalloc(size, GFP_KERNEL);
561 scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
562 used += scnprintf(tmp + used, size - used,
563 "Resource flags: 0x%016llx\n", scratch0);
565 /* check permanent flag */
566 if (scratch0 & CR_THERM_INIT) {
567 used += scnprintf(tmp + used, size - used,
568 " 0x%08x - thermal monitoring initialized\n",
572 /* check each dynamic flag on each HFI */
573 for (i = 0; i < 2; i++) {
574 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
576 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
578 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
579 CR_I2C1, "i2c chain 1");
580 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
581 CR_I2C2, "i2c chain 2");
583 used += scnprintf(tmp + used, size - used, "Write bits to clear\n");
585 ret = simple_read_from_buffer(buf, count, ppos, tmp, used);
590 static ssize_t asic_flags_write(struct file *file, const char __user *buf,
591 size_t count, loff_t *ppos)
593 struct hfi1_pportdata *ppd;
594 struct hfi1_devdata *dd;
597 unsigned long long value;
601 ppd = private2ppd(file);
604 /* zero terminate and read the expected integer */
605 buff = memdup_user_nul(buf, count);
607 return PTR_ERR(buff);
609 ret = kstrtoull(buff, 0, &value);
614 /* obtain exclusive access */
615 mutex_lock(&dd->asic_data->asic_resource_mutex);
616 acquire_hw_mutex(dd);
618 scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
620 write_csr(dd, ASIC_CFG_SCRATCH, scratch0);
621 /* force write to be visible to other HFI on another OS */
622 (void)read_csr(dd, ASIC_CFG_SCRATCH);
624 release_hw_mutex(dd);
625 mutex_unlock(&dd->asic_data->asic_resource_mutex);
627 /* return the number of bytes written */
635 /* read the dc8051 memory */
636 static ssize_t dc8051_memory_read(struct file *file, char __user *buf,
637 size_t count, loff_t *ppos)
639 struct hfi1_pportdata *ppd = private2ppd(file);
644 /* the checks below expect the position to be positive */
648 tmp = kzalloc(DC8051_DATA_MEM_SIZE, GFP_KERNEL);
653 * Fill in the requested portion of the temporary buffer from the
654 * 8051 memory. The 8051 memory read is done in terms of 8 bytes.
655 * Adjust start and end to fit. Skip reading anything if out of
658 start = *ppos & ~0x7; /* round down */
659 if (start < DC8051_DATA_MEM_SIZE) {
660 end = (*ppos + count + 7) & ~0x7; /* round up */
661 if (end > DC8051_DATA_MEM_SIZE)
662 end = DC8051_DATA_MEM_SIZE;
663 rval = read_8051_data(ppd->dd, start, end - start,
664 (u64 *)(tmp + start));
669 rval = simple_read_from_buffer(buf, count, ppos, tmp,
670 DC8051_DATA_MEM_SIZE);
676 static ssize_t debugfs_lcb_read(struct file *file, char __user *buf,
677 size_t count, loff_t *ppos)
679 struct hfi1_pportdata *ppd = private2ppd(file);
680 struct hfi1_devdata *dd = ppd->dd;
681 unsigned long total, csr_off;
686 /* only read 8 byte quantities */
687 if ((count % 8) != 0)
689 /* offset must be 8-byte aligned */
690 if ((*ppos % 8) != 0)
692 /* do nothing if out of range or zero count */
693 if (*ppos >= (LCB_END - LCB_START) || !count)
695 /* reduce count if needed */
696 if (*ppos + count > LCB_END - LCB_START)
697 count = (LCB_END - LCB_START) - *ppos;
699 csr_off = LCB_START + *ppos;
700 for (total = 0; total < count; total += 8, csr_off += 8) {
701 if (read_lcb_csr(dd, csr_off, (u64 *)&data))
703 if (put_user(data, (unsigned long __user *)(buf + total)))
710 static ssize_t debugfs_lcb_write(struct file *file, const char __user *buf,
711 size_t count, loff_t *ppos)
713 struct hfi1_pportdata *ppd = private2ppd(file);
714 struct hfi1_devdata *dd = ppd->dd;
715 unsigned long total, csr_off, data;
719 /* only write 8 byte quantities */
720 if ((count % 8) != 0)
722 /* offset must be 8-byte aligned */
723 if ((*ppos % 8) != 0)
725 /* do nothing if out of range or zero count */
726 if (*ppos >= (LCB_END - LCB_START) || !count)
728 /* reduce count if needed */
729 if (*ppos + count > LCB_END - LCB_START)
730 count = (LCB_END - LCB_START) - *ppos;
732 csr_off = LCB_START + *ppos;
733 for (total = 0; total < count; total += 8, csr_off += 8) {
734 if (get_user(data, (unsigned long __user *)(buf + total)))
736 if (write_lcb_csr(dd, csr_off, data))
744 * read the per-port QSFP data for ppd
746 static ssize_t qsfp_debugfs_dump(struct file *file, char __user *buf,
747 size_t count, loff_t *ppos)
749 struct hfi1_pportdata *ppd;
753 ppd = private2ppd(file);
754 tmp = kmalloc(PAGE_SIZE, GFP_KERNEL);
758 ret = qsfp_dump(ppd, tmp, PAGE_SIZE);
760 ret = simple_read_from_buffer(buf, count, ppos, tmp, ret);
765 /* Do an i2c write operation on the chain for the given HFI. */
766 static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf,
767 size_t count, loff_t *ppos, u32 target)
769 struct hfi1_pportdata *ppd;
776 ppd = private2ppd(file);
778 /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */
779 i2c_addr = (*ppos >> 16) & 0xffff;
780 offset = *ppos & 0xffff;
782 /* explicitly reject invalid address 0 to catch cp and cat */
786 buff = memdup_user(buf, count);
788 return PTR_ERR(buff);
790 total_written = i2c_write(ppd, target, i2c_addr, offset, buff, count);
791 if (total_written < 0) {
796 *ppos += total_written;
805 /* Do an i2c write operation on chain for HFI 0. */
806 static ssize_t i2c1_debugfs_write(struct file *file, const char __user *buf,
807 size_t count, loff_t *ppos)
809 return __i2c_debugfs_write(file, buf, count, ppos, 0);
812 /* Do an i2c write operation on chain for HFI 1. */
813 static ssize_t i2c2_debugfs_write(struct file *file, const char __user *buf,
814 size_t count, loff_t *ppos)
816 return __i2c_debugfs_write(file, buf, count, ppos, 1);
819 /* Do an i2c read operation on the chain for the given HFI. */
820 static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf,
821 size_t count, loff_t *ppos, u32 target)
823 struct hfi1_pportdata *ppd;
830 ppd = private2ppd(file);
832 /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */
833 i2c_addr = (*ppos >> 16) & 0xffff;
834 offset = *ppos & 0xffff;
836 /* explicitly reject invalid address 0 to catch cp and cat */
840 buff = kmalloc(count, GFP_KERNEL);
844 total_read = i2c_read(ppd, target, i2c_addr, offset, buff, count);
845 if (total_read < 0) {
852 ret = copy_to_user(buf, buff, total_read);
865 /* Do an i2c read operation on chain for HFI 0. */
866 static ssize_t i2c1_debugfs_read(struct file *file, char __user *buf,
867 size_t count, loff_t *ppos)
869 return __i2c_debugfs_read(file, buf, count, ppos, 0);
872 /* Do an i2c read operation on chain for HFI 1. */
873 static ssize_t i2c2_debugfs_read(struct file *file, char __user *buf,
874 size_t count, loff_t *ppos)
876 return __i2c_debugfs_read(file, buf, count, ppos, 1);
879 /* Do a QSFP write operation on the i2c chain for the given HFI. */
880 static ssize_t __qsfp_debugfs_write(struct file *file, const char __user *buf,
881 size_t count, loff_t *ppos, u32 target)
883 struct hfi1_pportdata *ppd;
888 if (*ppos + count > QSFP_PAGESIZE * 4) /* base page + page00-page03 */
891 ppd = private2ppd(file);
893 buff = memdup_user(buf, count);
895 return PTR_ERR(buff);
897 total_written = qsfp_write(ppd, target, *ppos, buff, count);
898 if (total_written < 0) {
903 *ppos += total_written;
912 /* Do a QSFP write operation on i2c chain for HFI 0. */
913 static ssize_t qsfp1_debugfs_write(struct file *file, const char __user *buf,
914 size_t count, loff_t *ppos)
916 return __qsfp_debugfs_write(file, buf, count, ppos, 0);
919 /* Do a QSFP write operation on i2c chain for HFI 1. */
920 static ssize_t qsfp2_debugfs_write(struct file *file, const char __user *buf,
921 size_t count, loff_t *ppos)
923 return __qsfp_debugfs_write(file, buf, count, ppos, 1);
926 /* Do a QSFP read operation on the i2c chain for the given HFI. */
927 static ssize_t __qsfp_debugfs_read(struct file *file, char __user *buf,
928 size_t count, loff_t *ppos, u32 target)
930 struct hfi1_pportdata *ppd;
935 if (*ppos + count > QSFP_PAGESIZE * 4) { /* base page + page00-page03 */
940 ppd = private2ppd(file);
942 buff = kmalloc(count, GFP_KERNEL);
948 total_read = qsfp_read(ppd, target, *ppos, buff, count);
949 if (total_read < 0) {
956 ret = copy_to_user(buf, buff, total_read);
970 /* Do a QSFP read operation on i2c chain for HFI 0. */
971 static ssize_t qsfp1_debugfs_read(struct file *file, char __user *buf,
972 size_t count, loff_t *ppos)
974 return __qsfp_debugfs_read(file, buf, count, ppos, 0);
977 /* Do a QSFP read operation on i2c chain for HFI 1. */
978 static ssize_t qsfp2_debugfs_read(struct file *file, char __user *buf,
979 size_t count, loff_t *ppos)
981 return __qsfp_debugfs_read(file, buf, count, ppos, 1);
984 static int __i2c_debugfs_open(struct inode *in, struct file *fp, u32 target)
986 struct hfi1_pportdata *ppd;
989 if (!try_module_get(THIS_MODULE))
992 ppd = private2ppd(fp);
994 ret = acquire_chip_resource(ppd->dd, i2c_target(target), 0);
995 if (ret) /* failed - release the module */
996 module_put(THIS_MODULE);
1001 static int i2c1_debugfs_open(struct inode *in, struct file *fp)
1003 return __i2c_debugfs_open(in, fp, 0);
1006 static int i2c2_debugfs_open(struct inode *in, struct file *fp)
1008 return __i2c_debugfs_open(in, fp, 1);
1011 static int __i2c_debugfs_release(struct inode *in, struct file *fp, u32 target)
1013 struct hfi1_pportdata *ppd;
1015 ppd = private2ppd(fp);
1017 release_chip_resource(ppd->dd, i2c_target(target));
1018 module_put(THIS_MODULE);
1023 static int i2c1_debugfs_release(struct inode *in, struct file *fp)
1025 return __i2c_debugfs_release(in, fp, 0);
1028 static int i2c2_debugfs_release(struct inode *in, struct file *fp)
1030 return __i2c_debugfs_release(in, fp, 1);
1033 static int __qsfp_debugfs_open(struct inode *in, struct file *fp, u32 target)
1035 struct hfi1_pportdata *ppd;
1038 if (!try_module_get(THIS_MODULE))
1041 ppd = private2ppd(fp);
1043 ret = acquire_chip_resource(ppd->dd, i2c_target(target), 0);
1044 if (ret) /* failed - release the module */
1045 module_put(THIS_MODULE);
1050 static int qsfp1_debugfs_open(struct inode *in, struct file *fp)
1052 return __qsfp_debugfs_open(in, fp, 0);
1055 static int qsfp2_debugfs_open(struct inode *in, struct file *fp)
1057 return __qsfp_debugfs_open(in, fp, 1);
1060 static int __qsfp_debugfs_release(struct inode *in, struct file *fp, u32 target)
1062 struct hfi1_pportdata *ppd;
1064 ppd = private2ppd(fp);
1066 release_chip_resource(ppd->dd, i2c_target(target));
1067 module_put(THIS_MODULE);
1072 static int qsfp1_debugfs_release(struct inode *in, struct file *fp)
1074 return __qsfp_debugfs_release(in, fp, 0);
1077 static int qsfp2_debugfs_release(struct inode *in, struct file *fp)
1079 return __qsfp_debugfs_release(in, fp, 1);
1082 #define DEBUGFS_OPS(nm, readroutine, writeroutine) \
1086 .read = readroutine, \
1087 .write = writeroutine, \
1088 .llseek = generic_file_llseek, \
1092 #define DEBUGFS_XOPS(nm, readf, writef, openf, releasef) \
1098 .llseek = generic_file_llseek, \
1100 .release = releasef \
1104 static const struct counter_info cntr_ops[] = {
1105 DEBUGFS_OPS("counter_names", dev_names_read, NULL),
1106 DEBUGFS_OPS("counters", dev_counters_read, NULL),
1107 DEBUGFS_OPS("portcounter_names", portnames_read, NULL),
1110 static const struct counter_info port_cntr_ops[] = {
1111 DEBUGFS_OPS("port%dcounters", portcntrs_debugfs_read, NULL),
1112 DEBUGFS_XOPS("i2c1", i2c1_debugfs_read, i2c1_debugfs_write,
1113 i2c1_debugfs_open, i2c1_debugfs_release),
1114 DEBUGFS_XOPS("i2c2", i2c2_debugfs_read, i2c2_debugfs_write,
1115 i2c2_debugfs_open, i2c2_debugfs_release),
1116 DEBUGFS_OPS("qsfp_dump%d", qsfp_debugfs_dump, NULL),
1117 DEBUGFS_XOPS("qsfp1", qsfp1_debugfs_read, qsfp1_debugfs_write,
1118 qsfp1_debugfs_open, qsfp1_debugfs_release),
1119 DEBUGFS_XOPS("qsfp2", qsfp2_debugfs_read, qsfp2_debugfs_write,
1120 qsfp2_debugfs_open, qsfp2_debugfs_release),
1121 DEBUGFS_OPS("asic_flags", asic_flags_read, asic_flags_write),
1122 DEBUGFS_OPS("dc8051_memory", dc8051_memory_read, NULL),
1123 DEBUGFS_OPS("lcb", debugfs_lcb_read, debugfs_lcb_write),
1126 static void *_sdma_cpu_list_seq_start(struct seq_file *s, loff_t *pos)
1128 if (*pos >= num_online_cpus())
1134 static void *_sdma_cpu_list_seq_next(struct seq_file *s, void *v, loff_t *pos)
1137 if (*pos >= num_online_cpus())
1143 static void _sdma_cpu_list_seq_stop(struct seq_file *s, void *v)
1145 /* nothing allocated */
1148 static int _sdma_cpu_list_seq_show(struct seq_file *s, void *v)
1150 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
1151 struct hfi1_devdata *dd = dd_from_dev(ibd);
1155 sdma_seqfile_dump_cpu_list(s, dd, (unsigned long)i);
1159 DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list);
1160 DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list)
1161 DEBUGFS_FILE_OPS(sdma_cpu_list);
1163 #ifdef CONFIG_FAULT_INJECTION
1164 static void *_fault_stats_seq_start(struct seq_file *s, loff_t *pos)
1166 struct hfi1_opcode_stats_perctx *opstats;
1168 if (*pos >= ARRAY_SIZE(opstats->stats))
1173 static void *_fault_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
1175 struct hfi1_opcode_stats_perctx *opstats;
1178 if (*pos >= ARRAY_SIZE(opstats->stats))
1183 static void _fault_stats_seq_stop(struct seq_file *s, void *v)
1187 static int _fault_stats_seq_show(struct seq_file *s, void *v)
1190 loff_t i = *spos, j;
1191 u64 n_packets = 0, n_bytes = 0;
1192 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
1193 struct hfi1_devdata *dd = dd_from_dev(ibd);
1194 struct hfi1_ctxtdata *rcd;
1196 for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) {
1197 rcd = hfi1_rcd_get_by_index(dd, j);
1199 n_packets += rcd->opstats->stats[i].n_packets;
1200 n_bytes += rcd->opstats->stats[i].n_bytes;
1204 if (!n_packets && !n_bytes)
1206 if (!ibd->fault_opcode->n_rxfaults[i] &&
1207 !ibd->fault_opcode->n_txfaults[i])
1209 seq_printf(s, "%02llx %llu/%llu (faults rx:%llu faults: tx:%llu)\n", i,
1210 (unsigned long long)n_packets,
1211 (unsigned long long)n_bytes,
1212 (unsigned long long)ibd->fault_opcode->n_rxfaults[i],
1213 (unsigned long long)ibd->fault_opcode->n_txfaults[i]);
1217 DEBUGFS_SEQ_FILE_OPS(fault_stats);
1218 DEBUGFS_SEQ_FILE_OPEN(fault_stats);
1219 DEBUGFS_FILE_OPS(fault_stats);
1221 static void fault_exit_opcode_debugfs(struct hfi1_ibdev *ibd)
1223 debugfs_remove_recursive(ibd->fault_opcode->dir);
1224 kfree(ibd->fault_opcode);
1225 ibd->fault_opcode = NULL;
1228 static int fault_init_opcode_debugfs(struct hfi1_ibdev *ibd)
1230 struct dentry *parent = ibd->hfi1_ibdev_dbg;
1232 ibd->fault_opcode = kzalloc(sizeof(*ibd->fault_opcode), GFP_KERNEL);
1233 if (!ibd->fault_opcode)
1236 ibd->fault_opcode->attr.interval = 1;
1237 ibd->fault_opcode->attr.require_end = ULONG_MAX;
1238 ibd->fault_opcode->attr.stacktrace_depth = 32;
1239 ibd->fault_opcode->attr.dname = NULL;
1240 ibd->fault_opcode->attr.verbose = 0;
1241 ibd->fault_opcode->fault_by_opcode = false;
1242 ibd->fault_opcode->opcode = 0;
1243 ibd->fault_opcode->mask = 0xff;
1245 ibd->fault_opcode->dir =
1246 fault_create_debugfs_attr("fault_opcode",
1248 &ibd->fault_opcode->attr);
1249 if (IS_ERR(ibd->fault_opcode->dir)) {
1250 kfree(ibd->fault_opcode);
1254 DEBUGFS_SEQ_FILE_CREATE(fault_stats, ibd->fault_opcode->dir, ibd);
1255 if (!debugfs_create_bool("fault_by_opcode", 0600,
1256 ibd->fault_opcode->dir,
1257 &ibd->fault_opcode->fault_by_opcode))
1259 if (!debugfs_create_x8("opcode", 0600, ibd->fault_opcode->dir,
1260 &ibd->fault_opcode->opcode))
1262 if (!debugfs_create_x8("mask", 0600, ibd->fault_opcode->dir,
1263 &ibd->fault_opcode->mask))
1268 fault_exit_opcode_debugfs(ibd);
1272 static void fault_exit_packet_debugfs(struct hfi1_ibdev *ibd)
1274 debugfs_remove_recursive(ibd->fault_packet->dir);
1275 kfree(ibd->fault_packet);
1276 ibd->fault_packet = NULL;
1279 static int fault_init_packet_debugfs(struct hfi1_ibdev *ibd)
1281 struct dentry *parent = ibd->hfi1_ibdev_dbg;
1283 ibd->fault_packet = kzalloc(sizeof(*ibd->fault_packet), GFP_KERNEL);
1284 if (!ibd->fault_packet)
1287 ibd->fault_packet->attr.interval = 1;
1288 ibd->fault_packet->attr.require_end = ULONG_MAX;
1289 ibd->fault_packet->attr.stacktrace_depth = 32;
1290 ibd->fault_packet->attr.dname = NULL;
1291 ibd->fault_packet->attr.verbose = 0;
1292 ibd->fault_packet->fault_by_packet = false;
1294 ibd->fault_packet->dir =
1295 fault_create_debugfs_attr("fault_packet",
1297 &ibd->fault_opcode->attr);
1298 if (IS_ERR(ibd->fault_packet->dir)) {
1299 kfree(ibd->fault_packet);
1303 if (!debugfs_create_bool("fault_by_packet", 0600,
1304 ibd->fault_packet->dir,
1305 &ibd->fault_packet->fault_by_packet))
1307 if (!debugfs_create_u64("fault_stats", 0400,
1308 ibd->fault_packet->dir,
1309 &ibd->fault_packet->n_faults))
1314 fault_exit_packet_debugfs(ibd);
1318 static void fault_exit_debugfs(struct hfi1_ibdev *ibd)
1320 fault_exit_opcode_debugfs(ibd);
1321 fault_exit_packet_debugfs(ibd);
1324 static int fault_init_debugfs(struct hfi1_ibdev *ibd)
1328 ret = fault_init_opcode_debugfs(ibd);
1332 ret = fault_init_packet_debugfs(ibd);
1334 fault_exit_opcode_debugfs(ibd);
1339 bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
1341 return ibd->fault_suppress_err;
1344 bool hfi1_dbg_fault_opcode(struct rvt_qp *qp, u32 opcode, bool rx)
1347 struct hfi1_ibdev *ibd = to_idev(qp->ibqp.device);
1349 if (!ibd->fault_opcode || !ibd->fault_opcode->fault_by_opcode)
1351 if (ibd->fault_opcode->opcode != (opcode & ibd->fault_opcode->mask))
1353 ret = should_fail(&ibd->fault_opcode->attr, 1);
1355 trace_hfi1_fault_opcode(qp, opcode);
1357 ibd->fault_opcode->n_rxfaults[opcode]++;
1359 ibd->fault_opcode->n_txfaults[opcode]++;
1364 bool hfi1_dbg_fault_packet(struct hfi1_packet *packet)
1366 struct rvt_dev_info *rdi = &packet->rcd->ppd->dd->verbs_dev.rdi;
1367 struct hfi1_ibdev *ibd = dev_from_rdi(rdi);
1370 if (!ibd->fault_packet || !ibd->fault_packet->fault_by_packet)
1373 ret = should_fail(&ibd->fault_packet->attr, 1);
1375 ++ibd->fault_packet->n_faults;
1376 trace_hfi1_fault_packet(packet);
1382 void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
1384 char name[sizeof("port0counters") + 1];
1386 struct hfi1_devdata *dd = dd_from_dev(ibd);
1387 struct hfi1_pportdata *ppd;
1388 int unit = dd->unit;
1393 snprintf(name, sizeof(name), "%s_%d", class_name(), unit);
1394 snprintf(link, sizeof(link), "%d", unit);
1395 ibd->hfi1_ibdev_dbg = debugfs_create_dir(name, hfi1_dbg_root);
1396 if (!ibd->hfi1_ibdev_dbg) {
1397 pr_warn("create of %s failed\n", name);
1400 ibd->hfi1_ibdev_link =
1401 debugfs_create_symlink(link, hfi1_dbg_root, name);
1402 if (!ibd->hfi1_ibdev_link) {
1403 pr_warn("create of %s symlink failed\n", name);
1406 DEBUGFS_SEQ_FILE_CREATE(opcode_stats, ibd->hfi1_ibdev_dbg, ibd);
1407 DEBUGFS_SEQ_FILE_CREATE(tx_opcode_stats, ibd->hfi1_ibdev_dbg, ibd);
1408 DEBUGFS_SEQ_FILE_CREATE(ctx_stats, ibd->hfi1_ibdev_dbg, ibd);
1409 DEBUGFS_SEQ_FILE_CREATE(qp_stats, ibd->hfi1_ibdev_dbg, ibd);
1410 DEBUGFS_SEQ_FILE_CREATE(sdes, ibd->hfi1_ibdev_dbg, ibd);
1411 DEBUGFS_SEQ_FILE_CREATE(rcds, ibd->hfi1_ibdev_dbg, ibd);
1412 DEBUGFS_SEQ_FILE_CREATE(sdma_cpu_list, ibd->hfi1_ibdev_dbg, ibd);
1413 /* dev counter files */
1414 for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)
1415 DEBUGFS_FILE_CREATE(cntr_ops[i].name,
1416 ibd->hfi1_ibdev_dbg,
1418 &cntr_ops[i].ops, S_IRUGO);
1419 /* per port files */
1420 for (ppd = dd->pport, j = 0; j < dd->num_pports; j++, ppd++)
1421 for (i = 0; i < ARRAY_SIZE(port_cntr_ops); i++) {
1424 port_cntr_ops[i].name,
1426 DEBUGFS_FILE_CREATE(name,
1427 ibd->hfi1_ibdev_dbg,
1429 &port_cntr_ops[i].ops,
1430 !port_cntr_ops[i].ops.write ?
1431 S_IRUGO : S_IRUGO | S_IWUSR);
1434 #ifdef CONFIG_FAULT_INJECTION
1435 debugfs_create_bool("fault_suppress_err", 0600,
1436 ibd->hfi1_ibdev_dbg,
1437 &ibd->fault_suppress_err);
1438 fault_init_debugfs(ibd);
1442 void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
1446 #ifdef CONFIG_FAULT_INJECTION
1447 fault_exit_debugfs(ibd);
1449 debugfs_remove(ibd->hfi1_ibdev_link);
1450 debugfs_remove_recursive(ibd->hfi1_ibdev_dbg);
1452 ibd->hfi1_ibdev_dbg = NULL;
1456 * driver stats field names, one line per stat, single string. Used by
1457 * programs like hfistats to print the stats in a way which works for
1458 * different versions of drivers, without changing program source.
1459 * if hfi1_ib_stats changes, this needs to change. Names need to be
1460 * 12 chars or less (w/o newline), for proper display by hfistats utility.
1462 static const char * const hfi1_statnames[] = {
1463 /* must be element 0*/
1476 static void *_driver_stats_names_seq_start(struct seq_file *s, loff_t *pos)
1478 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1483 static void *_driver_stats_names_seq_next(
1489 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1494 static void _driver_stats_names_seq_stop(struct seq_file *s, void *v)
1498 static int _driver_stats_names_seq_show(struct seq_file *s, void *v)
1502 seq_printf(s, "%s\n", hfi1_statnames[*spos]);
1506 DEBUGFS_SEQ_FILE_OPS(driver_stats_names);
1507 DEBUGFS_SEQ_FILE_OPEN(driver_stats_names)
1508 DEBUGFS_FILE_OPS(driver_stats_names);
1510 static void *_driver_stats_seq_start(struct seq_file *s, loff_t *pos)
1512 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1517 static void *_driver_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
1520 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1525 static void _driver_stats_seq_stop(struct seq_file *s, void *v)
1529 static u64 hfi1_sps_ints(void)
1531 unsigned long flags;
1532 struct hfi1_devdata *dd;
1535 spin_lock_irqsave(&hfi1_devs_lock, flags);
1536 list_for_each_entry(dd, &hfi1_dev_list, list) {
1537 sps_ints += get_all_cpu_total(dd->int_counter);
1539 spin_unlock_irqrestore(&hfi1_devs_lock, flags);
1543 static int _driver_stats_seq_show(struct seq_file *s, void *v)
1547 u64 *stats = (u64 *)&hfi1_stats;
1548 size_t sz = seq_get_buf(s, &buffer);
1550 if (sz < sizeof(u64))
1552 /* special case for interrupts */
1554 *(u64 *)buffer = hfi1_sps_ints();
1556 *(u64 *)buffer = stats[*spos];
1557 seq_commit(s, sizeof(u64));
1561 DEBUGFS_SEQ_FILE_OPS(driver_stats);
1562 DEBUGFS_SEQ_FILE_OPEN(driver_stats)
1563 DEBUGFS_FILE_OPS(driver_stats);
1565 void hfi1_dbg_init(void)
1567 hfi1_dbg_root = debugfs_create_dir(DRIVER_NAME, NULL);
1569 pr_warn("init of debugfs failed\n");
1570 DEBUGFS_SEQ_FILE_CREATE(driver_stats_names, hfi1_dbg_root, NULL);
1571 DEBUGFS_SEQ_FILE_CREATE(driver_stats, hfi1_dbg_root, NULL);
1574 void hfi1_dbg_exit(void)
1576 debugfs_remove_recursive(hfi1_dbg_root);
1577 hfi1_dbg_root = NULL;