1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3 * Copyright(c) 2015-2018 Intel Corporation.
6 #include <linux/debugfs.h>
7 #include <linux/seq_file.h>
8 #include <linux/kernel.h>
9 #include <linux/export.h>
10 #include <linux/string.h>
11 #include <linux/types.h>
12 #include <linux/ratelimit.h>
13 #include <linux/fault-inject.h>
23 static struct dentry *hfi1_dbg_root;
25 /* wrappers to enforce srcu in seq file */
26 ssize_t hfi1_seq_read(struct file *file, char __user *buf, size_t size,
29 struct dentry *d = file->f_path.dentry;
32 r = debugfs_file_get(d);
35 r = seq_read(file, buf, size, ppos);
40 loff_t hfi1_seq_lseek(struct file *file, loff_t offset, int whence)
42 struct dentry *d = file->f_path.dentry;
45 r = debugfs_file_get(d);
48 r = seq_lseek(file, offset, whence);
53 #define private2dd(file) (file_inode(file)->i_private)
54 #define private2ppd(file) (file_inode(file)->i_private)
56 static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
58 struct hfi1_opcode_stats_perctx *opstats;
60 if (*pos >= ARRAY_SIZE(opstats->stats))
65 static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
67 struct hfi1_opcode_stats_perctx *opstats;
70 if (*pos >= ARRAY_SIZE(opstats->stats))
75 static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
79 static int opcode_stats_show(struct seq_file *s, u8 i, u64 packets, u64 bytes)
81 if (!packets && !bytes)
83 seq_printf(s, "%02x %llu/%llu\n", i,
84 (unsigned long long)packets,
85 (unsigned long long)bytes);
90 static int _opcode_stats_seq_show(struct seq_file *s, void *v)
94 u64 n_packets = 0, n_bytes = 0;
95 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
96 struct hfi1_devdata *dd = dd_from_dev(ibd);
97 struct hfi1_ctxtdata *rcd;
99 for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) {
100 rcd = hfi1_rcd_get_by_index(dd, j);
102 n_packets += rcd->opstats->stats[i].n_packets;
103 n_bytes += rcd->opstats->stats[i].n_bytes;
107 return opcode_stats_show(s, i, n_packets, n_bytes);
110 DEBUGFS_SEQ_FILE_OPS(opcode_stats);
111 DEBUGFS_SEQ_FILE_OPEN(opcode_stats)
112 DEBUGFS_FILE_OPS(opcode_stats);
114 static void *_tx_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
116 return _opcode_stats_seq_start(s, pos);
119 static void *_tx_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
121 return _opcode_stats_seq_next(s, v, pos);
124 static void _tx_opcode_stats_seq_stop(struct seq_file *s, void *v)
128 static int _tx_opcode_stats_seq_show(struct seq_file *s, void *v)
133 u64 n_packets = 0, n_bytes = 0;
134 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
135 struct hfi1_devdata *dd = dd_from_dev(ibd);
137 for_each_possible_cpu(j) {
138 struct hfi1_opcode_stats_perctx *s =
139 per_cpu_ptr(dd->tx_opstats, j);
140 n_packets += s->stats[i].n_packets;
141 n_bytes += s->stats[i].n_bytes;
143 return opcode_stats_show(s, i, n_packets, n_bytes);
146 DEBUGFS_SEQ_FILE_OPS(tx_opcode_stats);
147 DEBUGFS_SEQ_FILE_OPEN(tx_opcode_stats)
148 DEBUGFS_FILE_OPS(tx_opcode_stats);
150 static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
152 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
153 struct hfi1_devdata *dd = dd_from_dev(ibd);
156 return SEQ_START_TOKEN;
157 if (*pos >= dd->first_dyn_alloc_ctxt)
162 static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
164 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
165 struct hfi1_devdata *dd = dd_from_dev(ibd);
167 if (v == SEQ_START_TOKEN)
171 if (*pos >= dd->first_dyn_alloc_ctxt)
176 static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
178 /* nothing allocated */
181 static int _ctx_stats_seq_show(struct seq_file *s, void *v)
186 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
187 struct hfi1_devdata *dd = dd_from_dev(ibd);
188 struct hfi1_ctxtdata *rcd;
190 if (v == SEQ_START_TOKEN) {
191 seq_puts(s, "Ctx:npkts\n");
198 rcd = hfi1_rcd_get_by_index_safe(dd, i);
202 for (j = 0; j < ARRAY_SIZE(rcd->opstats->stats); j++)
203 n_packets += rcd->opstats->stats[j].n_packets;
210 seq_printf(s, " %llu:%llu\n", i, n_packets);
214 DEBUGFS_SEQ_FILE_OPS(ctx_stats);
215 DEBUGFS_SEQ_FILE_OPEN(ctx_stats)
216 DEBUGFS_FILE_OPS(ctx_stats);
218 static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos)
221 struct rvt_qp_iter *iter;
224 iter = rvt_qp_iter_init(s->private, 0, NULL);
226 /* stop calls rcu_read_unlock */
233 if (rvt_qp_iter_next(iter)) {
242 static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr,
246 struct rvt_qp_iter *iter = iter_ptr;
250 if (rvt_qp_iter_next(iter)) {
258 static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
264 static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr)
266 struct rvt_qp_iter *iter = iter_ptr;
271 qp_iter_print(s, iter);
276 DEBUGFS_SEQ_FILE_OPS(qp_stats);
277 DEBUGFS_SEQ_FILE_OPEN(qp_stats)
278 DEBUGFS_FILE_OPS(qp_stats);
280 static void *_sdes_seq_start(struct seq_file *s, loff_t *pos)
282 struct hfi1_ibdev *ibd;
283 struct hfi1_devdata *dd;
285 ibd = (struct hfi1_ibdev *)s->private;
286 dd = dd_from_dev(ibd);
287 if (!dd->per_sdma || *pos >= dd->num_sdma)
292 static void *_sdes_seq_next(struct seq_file *s, void *v, loff_t *pos)
294 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
295 struct hfi1_devdata *dd = dd_from_dev(ibd);
298 if (!dd->per_sdma || *pos >= dd->num_sdma)
303 static void _sdes_seq_stop(struct seq_file *s, void *v)
307 static int _sdes_seq_show(struct seq_file *s, void *v)
309 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
310 struct hfi1_devdata *dd = dd_from_dev(ibd);
314 sdma_seqfile_dump_sde(s, &dd->per_sdma[i]);
318 DEBUGFS_SEQ_FILE_OPS(sdes);
319 DEBUGFS_SEQ_FILE_OPEN(sdes)
320 DEBUGFS_FILE_OPS(sdes);
322 static void *_rcds_seq_start(struct seq_file *s, loff_t *pos)
324 struct hfi1_ibdev *ibd;
325 struct hfi1_devdata *dd;
327 ibd = (struct hfi1_ibdev *)s->private;
328 dd = dd_from_dev(ibd);
329 if (!dd->rcd || *pos >= dd->n_krcv_queues)
334 static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos)
336 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
337 struct hfi1_devdata *dd = dd_from_dev(ibd);
340 if (!dd->rcd || *pos >= dd->num_rcv_contexts)
345 static void _rcds_seq_stop(struct seq_file *s, void *v)
349 static int _rcds_seq_show(struct seq_file *s, void *v)
351 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
352 struct hfi1_devdata *dd = dd_from_dev(ibd);
353 struct hfi1_ctxtdata *rcd;
357 rcd = hfi1_rcd_get_by_index_safe(dd, i);
359 seqfile_dump_rcd(s, rcd);
364 DEBUGFS_SEQ_FILE_OPS(rcds);
365 DEBUGFS_SEQ_FILE_OPEN(rcds)
366 DEBUGFS_FILE_OPS(rcds);
368 static void *_pios_seq_start(struct seq_file *s, loff_t *pos)
370 struct hfi1_ibdev *ibd;
371 struct hfi1_devdata *dd;
373 ibd = (struct hfi1_ibdev *)s->private;
374 dd = dd_from_dev(ibd);
375 if (!dd->send_contexts || *pos >= dd->num_send_contexts)
380 static void *_pios_seq_next(struct seq_file *s, void *v, loff_t *pos)
382 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
383 struct hfi1_devdata *dd = dd_from_dev(ibd);
386 if (!dd->send_contexts || *pos >= dd->num_send_contexts)
391 static void _pios_seq_stop(struct seq_file *s, void *v)
395 static int _pios_seq_show(struct seq_file *s, void *v)
397 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
398 struct hfi1_devdata *dd = dd_from_dev(ibd);
399 struct send_context_info *sci;
404 spin_lock_irqsave(&dd->sc_lock, flags);
405 sci = &dd->send_contexts[i];
406 if (sci && sci->type != SC_USER && sci->allocated && sci->sc)
407 seqfile_dump_sci(s, i, sci);
408 spin_unlock_irqrestore(&dd->sc_lock, flags);
412 DEBUGFS_SEQ_FILE_OPS(pios);
413 DEBUGFS_SEQ_FILE_OPEN(pios)
414 DEBUGFS_FILE_OPS(pios);
416 /* read the per-device counters */
417 static ssize_t dev_counters_read(struct file *file, char __user *buf,
418 size_t count, loff_t *ppos)
422 struct hfi1_devdata *dd;
425 dd = private2dd(file);
426 avail = hfi1_read_cntrs(dd, NULL, &counters);
427 rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
431 /* read the per-device counters */
432 static ssize_t dev_names_read(struct file *file, char __user *buf,
433 size_t count, loff_t *ppos)
437 struct hfi1_devdata *dd;
440 dd = private2dd(file);
441 avail = hfi1_read_cntrs(dd, &names, NULL);
442 rval = simple_read_from_buffer(buf, count, ppos, names, avail);
446 struct counter_info {
448 const struct file_operations ops;
452 * Could use file_inode(file)->i_ino to figure out which file,
453 * instead of separate routine for each, but for now, this works...
456 /* read the per-port names (same for each port) */
457 static ssize_t portnames_read(struct file *file, char __user *buf,
458 size_t count, loff_t *ppos)
462 struct hfi1_devdata *dd;
465 dd = private2dd(file);
466 avail = hfi1_read_portcntrs(dd->pport, &names, NULL);
467 rval = simple_read_from_buffer(buf, count, ppos, names, avail);
471 /* read the per-port counters */
472 static ssize_t portcntrs_debugfs_read(struct file *file, char __user *buf,
473 size_t count, loff_t *ppos)
477 struct hfi1_pportdata *ppd;
480 ppd = private2ppd(file);
481 avail = hfi1_read_portcntrs(ppd, NULL, &counters);
482 rval = simple_read_from_buffer(buf, count, ppos, counters, avail);
486 static void check_dyn_flag(u64 scratch0, char *p, int size, int *used,
487 int this_hfi, int hfi, u32 flag, const char *what)
491 mask = flag << (hfi ? CR_DYN_SHIFT : 0);
492 if (scratch0 & mask) {
493 *used += scnprintf(p + *used, size - *used,
494 " 0x%08x - HFI%d %s in use, %s device\n",
496 this_hfi == hfi ? "this" : "other");
500 static ssize_t asic_flags_read(struct file *file, char __user *buf,
501 size_t count, loff_t *ppos)
503 struct hfi1_pportdata *ppd;
504 struct hfi1_devdata *dd;
512 ppd = private2ppd(file);
516 tmp = kmalloc(size, GFP_KERNEL);
520 scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
521 used += scnprintf(tmp + used, size - used,
522 "Resource flags: 0x%016llx\n", scratch0);
524 /* check permanent flag */
525 if (scratch0 & CR_THERM_INIT) {
526 used += scnprintf(tmp + used, size - used,
527 " 0x%08x - thermal monitoring initialized\n",
531 /* check each dynamic flag on each HFI */
532 for (i = 0; i < 2; i++) {
533 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
535 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
537 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
538 CR_I2C1, "i2c chain 1");
539 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i,
540 CR_I2C2, "i2c chain 2");
542 used += scnprintf(tmp + used, size - used, "Write bits to clear\n");
544 ret = simple_read_from_buffer(buf, count, ppos, tmp, used);
549 static ssize_t asic_flags_write(struct file *file, const char __user *buf,
550 size_t count, loff_t *ppos)
552 struct hfi1_pportdata *ppd;
553 struct hfi1_devdata *dd;
556 unsigned long long value;
560 ppd = private2ppd(file);
563 /* zero terminate and read the expected integer */
564 buff = memdup_user_nul(buf, count);
566 return PTR_ERR(buff);
568 ret = kstrtoull(buff, 0, &value);
573 /* obtain exclusive access */
574 mutex_lock(&dd->asic_data->asic_resource_mutex);
575 acquire_hw_mutex(dd);
577 scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
579 write_csr(dd, ASIC_CFG_SCRATCH, scratch0);
580 /* force write to be visible to other HFI on another OS */
581 (void)read_csr(dd, ASIC_CFG_SCRATCH);
583 release_hw_mutex(dd);
584 mutex_unlock(&dd->asic_data->asic_resource_mutex);
586 /* return the number of bytes written */
594 /* read the dc8051 memory */
595 static ssize_t dc8051_memory_read(struct file *file, char __user *buf,
596 size_t count, loff_t *ppos)
598 struct hfi1_pportdata *ppd = private2ppd(file);
603 /* the checks below expect the position to be positive */
607 tmp = kzalloc(DC8051_DATA_MEM_SIZE, GFP_KERNEL);
612 * Fill in the requested portion of the temporary buffer from the
613 * 8051 memory. The 8051 memory read is done in terms of 8 bytes.
614 * Adjust start and end to fit. Skip reading anything if out of
617 start = *ppos & ~0x7; /* round down */
618 if (start < DC8051_DATA_MEM_SIZE) {
619 end = (*ppos + count + 7) & ~0x7; /* round up */
620 if (end > DC8051_DATA_MEM_SIZE)
621 end = DC8051_DATA_MEM_SIZE;
622 rval = read_8051_data(ppd->dd, start, end - start,
623 (u64 *)(tmp + start));
628 rval = simple_read_from_buffer(buf, count, ppos, tmp,
629 DC8051_DATA_MEM_SIZE);
635 static ssize_t debugfs_lcb_read(struct file *file, char __user *buf,
636 size_t count, loff_t *ppos)
638 struct hfi1_pportdata *ppd = private2ppd(file);
639 struct hfi1_devdata *dd = ppd->dd;
640 unsigned long total, csr_off;
645 /* only read 8 byte quantities */
646 if ((count % 8) != 0)
648 /* offset must be 8-byte aligned */
649 if ((*ppos % 8) != 0)
651 /* do nothing if out of range or zero count */
652 if (*ppos >= (LCB_END - LCB_START) || !count)
654 /* reduce count if needed */
655 if (*ppos + count > LCB_END - LCB_START)
656 count = (LCB_END - LCB_START) - *ppos;
658 csr_off = LCB_START + *ppos;
659 for (total = 0; total < count; total += 8, csr_off += 8) {
660 if (read_lcb_csr(dd, csr_off, (u64 *)&data))
662 if (put_user(data, (unsigned long __user *)(buf + total)))
669 static ssize_t debugfs_lcb_write(struct file *file, const char __user *buf,
670 size_t count, loff_t *ppos)
672 struct hfi1_pportdata *ppd = private2ppd(file);
673 struct hfi1_devdata *dd = ppd->dd;
674 unsigned long total, csr_off, data;
678 /* only write 8 byte quantities */
679 if ((count % 8) != 0)
681 /* offset must be 8-byte aligned */
682 if ((*ppos % 8) != 0)
684 /* do nothing if out of range or zero count */
685 if (*ppos >= (LCB_END - LCB_START) || !count)
687 /* reduce count if needed */
688 if (*ppos + count > LCB_END - LCB_START)
689 count = (LCB_END - LCB_START) - *ppos;
691 csr_off = LCB_START + *ppos;
692 for (total = 0; total < count; total += 8, csr_off += 8) {
693 if (get_user(data, (unsigned long __user *)(buf + total)))
695 if (write_lcb_csr(dd, csr_off, data))
703 * read the per-port QSFP data for ppd
705 static ssize_t qsfp_debugfs_dump(struct file *file, char __user *buf,
706 size_t count, loff_t *ppos)
708 struct hfi1_pportdata *ppd;
712 ppd = private2ppd(file);
713 tmp = kmalloc(PAGE_SIZE, GFP_KERNEL);
717 ret = qsfp_dump(ppd, tmp, PAGE_SIZE);
719 ret = simple_read_from_buffer(buf, count, ppos, tmp, ret);
724 /* Do an i2c write operation on the chain for the given HFI. */
725 static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf,
726 size_t count, loff_t *ppos, u32 target)
728 struct hfi1_pportdata *ppd;
735 ppd = private2ppd(file);
737 /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */
738 i2c_addr = (*ppos >> 16) & 0xffff;
739 offset = *ppos & 0xffff;
741 /* explicitly reject invalid address 0 to catch cp and cat */
745 buff = memdup_user(buf, count);
747 return PTR_ERR(buff);
749 total_written = i2c_write(ppd, target, i2c_addr, offset, buff, count);
750 if (total_written < 0) {
755 *ppos += total_written;
764 /* Do an i2c write operation on chain for HFI 0. */
765 static ssize_t i2c1_debugfs_write(struct file *file, const char __user *buf,
766 size_t count, loff_t *ppos)
768 return __i2c_debugfs_write(file, buf, count, ppos, 0);
771 /* Do an i2c write operation on chain for HFI 1. */
772 static ssize_t i2c2_debugfs_write(struct file *file, const char __user *buf,
773 size_t count, loff_t *ppos)
775 return __i2c_debugfs_write(file, buf, count, ppos, 1);
778 /* Do an i2c read operation on the chain for the given HFI. */
779 static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf,
780 size_t count, loff_t *ppos, u32 target)
782 struct hfi1_pportdata *ppd;
789 ppd = private2ppd(file);
791 /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */
792 i2c_addr = (*ppos >> 16) & 0xffff;
793 offset = *ppos & 0xffff;
795 /* explicitly reject invalid address 0 to catch cp and cat */
799 buff = kmalloc(count, GFP_KERNEL);
803 total_read = i2c_read(ppd, target, i2c_addr, offset, buff, count);
804 if (total_read < 0) {
811 ret = copy_to_user(buf, buff, total_read);
824 /* Do an i2c read operation on chain for HFI 0. */
825 static ssize_t i2c1_debugfs_read(struct file *file, char __user *buf,
826 size_t count, loff_t *ppos)
828 return __i2c_debugfs_read(file, buf, count, ppos, 0);
831 /* Do an i2c read operation on chain for HFI 1. */
832 static ssize_t i2c2_debugfs_read(struct file *file, char __user *buf,
833 size_t count, loff_t *ppos)
835 return __i2c_debugfs_read(file, buf, count, ppos, 1);
838 /* Do a QSFP write operation on the i2c chain for the given HFI. */
839 static ssize_t __qsfp_debugfs_write(struct file *file, const char __user *buf,
840 size_t count, loff_t *ppos, u32 target)
842 struct hfi1_pportdata *ppd;
847 if (*ppos + count > QSFP_PAGESIZE * 4) /* base page + page00-page03 */
850 ppd = private2ppd(file);
852 buff = memdup_user(buf, count);
854 return PTR_ERR(buff);
856 total_written = qsfp_write(ppd, target, *ppos, buff, count);
857 if (total_written < 0) {
862 *ppos += total_written;
871 /* Do a QSFP write operation on i2c chain for HFI 0. */
872 static ssize_t qsfp1_debugfs_write(struct file *file, const char __user *buf,
873 size_t count, loff_t *ppos)
875 return __qsfp_debugfs_write(file, buf, count, ppos, 0);
878 /* Do a QSFP write operation on i2c chain for HFI 1. */
879 static ssize_t qsfp2_debugfs_write(struct file *file, const char __user *buf,
880 size_t count, loff_t *ppos)
882 return __qsfp_debugfs_write(file, buf, count, ppos, 1);
885 /* Do a QSFP read operation on the i2c chain for the given HFI. */
886 static ssize_t __qsfp_debugfs_read(struct file *file, char __user *buf,
887 size_t count, loff_t *ppos, u32 target)
889 struct hfi1_pportdata *ppd;
894 if (*ppos + count > QSFP_PAGESIZE * 4) { /* base page + page00-page03 */
899 ppd = private2ppd(file);
901 buff = kmalloc(count, GFP_KERNEL);
907 total_read = qsfp_read(ppd, target, *ppos, buff, count);
908 if (total_read < 0) {
915 ret = copy_to_user(buf, buff, total_read);
929 /* Do a QSFP read operation on i2c chain for HFI 0. */
930 static ssize_t qsfp1_debugfs_read(struct file *file, char __user *buf,
931 size_t count, loff_t *ppos)
933 return __qsfp_debugfs_read(file, buf, count, ppos, 0);
936 /* Do a QSFP read operation on i2c chain for HFI 1. */
937 static ssize_t qsfp2_debugfs_read(struct file *file, char __user *buf,
938 size_t count, loff_t *ppos)
940 return __qsfp_debugfs_read(file, buf, count, ppos, 1);
943 static int __i2c_debugfs_open(struct inode *in, struct file *fp, u32 target)
945 struct hfi1_pportdata *ppd;
947 ppd = private2ppd(fp);
949 return acquire_chip_resource(ppd->dd, i2c_target(target), 0);
952 static int i2c1_debugfs_open(struct inode *in, struct file *fp)
954 return __i2c_debugfs_open(in, fp, 0);
957 static int i2c2_debugfs_open(struct inode *in, struct file *fp)
959 return __i2c_debugfs_open(in, fp, 1);
962 static int __i2c_debugfs_release(struct inode *in, struct file *fp, u32 target)
964 struct hfi1_pportdata *ppd;
966 ppd = private2ppd(fp);
968 release_chip_resource(ppd->dd, i2c_target(target));
973 static int i2c1_debugfs_release(struct inode *in, struct file *fp)
975 return __i2c_debugfs_release(in, fp, 0);
978 static int i2c2_debugfs_release(struct inode *in, struct file *fp)
980 return __i2c_debugfs_release(in, fp, 1);
983 static int __qsfp_debugfs_open(struct inode *in, struct file *fp, u32 target)
985 struct hfi1_pportdata *ppd;
987 ppd = private2ppd(fp);
989 return acquire_chip_resource(ppd->dd, i2c_target(target), 0);
992 static int qsfp1_debugfs_open(struct inode *in, struct file *fp)
994 return __qsfp_debugfs_open(in, fp, 0);
997 static int qsfp2_debugfs_open(struct inode *in, struct file *fp)
999 return __qsfp_debugfs_open(in, fp, 1);
1002 static int __qsfp_debugfs_release(struct inode *in, struct file *fp, u32 target)
1004 struct hfi1_pportdata *ppd;
1006 ppd = private2ppd(fp);
1008 release_chip_resource(ppd->dd, i2c_target(target));
1013 static int qsfp1_debugfs_release(struct inode *in, struct file *fp)
1015 return __qsfp_debugfs_release(in, fp, 0);
1018 static int qsfp2_debugfs_release(struct inode *in, struct file *fp)
1020 return __qsfp_debugfs_release(in, fp, 1);
1023 #define EXPROM_WRITE_ENABLE BIT_ULL(14)
1025 static bool exprom_wp_disabled;
1027 static int exprom_wp_set(struct hfi1_devdata *dd, bool disable)
1032 gpio_val = EXPROM_WRITE_ENABLE;
1033 exprom_wp_disabled = true;
1034 dd_dev_info(dd, "Disable Expansion ROM Write Protection\n");
1036 exprom_wp_disabled = false;
1037 dd_dev_info(dd, "Enable Expansion ROM Write Protection\n");
1040 write_csr(dd, ASIC_GPIO_OUT, gpio_val);
1041 write_csr(dd, ASIC_GPIO_OE, gpio_val);
1046 static ssize_t exprom_wp_debugfs_read(struct file *file, char __user *buf,
1047 size_t count, loff_t *ppos)
1052 static ssize_t exprom_wp_debugfs_write(struct file *file,
1053 const char __user *buf, size_t count,
1056 struct hfi1_pportdata *ppd = private2ppd(file);
1061 if (get_user(cdata, buf))
1064 exprom_wp_set(ppd->dd, false);
1065 else if (cdata == '1')
1066 exprom_wp_set(ppd->dd, true);
1073 static unsigned long exprom_in_use;
1075 static int exprom_wp_debugfs_open(struct inode *in, struct file *fp)
1077 if (test_and_set_bit(0, &exprom_in_use))
1083 static int exprom_wp_debugfs_release(struct inode *in, struct file *fp)
1085 struct hfi1_pportdata *ppd = private2ppd(fp);
1087 if (exprom_wp_disabled)
1088 exprom_wp_set(ppd->dd, false);
1089 clear_bit(0, &exprom_in_use);
1094 #define DEBUGFS_OPS(nm, readroutine, writeroutine) \
1098 .owner = THIS_MODULE, \
1099 .read = readroutine, \
1100 .write = writeroutine, \
1101 .llseek = generic_file_llseek, \
1105 #define DEBUGFS_XOPS(nm, readf, writef, openf, releasef) \
1109 .owner = THIS_MODULE, \
1112 .llseek = generic_file_llseek, \
1114 .release = releasef \
1118 static const struct counter_info cntr_ops[] = {
1119 DEBUGFS_OPS("counter_names", dev_names_read, NULL),
1120 DEBUGFS_OPS("counters", dev_counters_read, NULL),
1121 DEBUGFS_OPS("portcounter_names", portnames_read, NULL),
1124 static const struct counter_info port_cntr_ops[] = {
1125 DEBUGFS_OPS("port%dcounters", portcntrs_debugfs_read, NULL),
1126 DEBUGFS_XOPS("i2c1", i2c1_debugfs_read, i2c1_debugfs_write,
1127 i2c1_debugfs_open, i2c1_debugfs_release),
1128 DEBUGFS_XOPS("i2c2", i2c2_debugfs_read, i2c2_debugfs_write,
1129 i2c2_debugfs_open, i2c2_debugfs_release),
1130 DEBUGFS_OPS("qsfp_dump%d", qsfp_debugfs_dump, NULL),
1131 DEBUGFS_XOPS("qsfp1", qsfp1_debugfs_read, qsfp1_debugfs_write,
1132 qsfp1_debugfs_open, qsfp1_debugfs_release),
1133 DEBUGFS_XOPS("qsfp2", qsfp2_debugfs_read, qsfp2_debugfs_write,
1134 qsfp2_debugfs_open, qsfp2_debugfs_release),
1135 DEBUGFS_XOPS("exprom_wp", exprom_wp_debugfs_read,
1136 exprom_wp_debugfs_write, exprom_wp_debugfs_open,
1137 exprom_wp_debugfs_release),
1138 DEBUGFS_OPS("asic_flags", asic_flags_read, asic_flags_write),
1139 DEBUGFS_OPS("dc8051_memory", dc8051_memory_read, NULL),
1140 DEBUGFS_OPS("lcb", debugfs_lcb_read, debugfs_lcb_write),
1143 static void *_sdma_cpu_list_seq_start(struct seq_file *s, loff_t *pos)
1145 if (*pos >= num_online_cpus())
1151 static void *_sdma_cpu_list_seq_next(struct seq_file *s, void *v, loff_t *pos)
1154 if (*pos >= num_online_cpus())
1160 static void _sdma_cpu_list_seq_stop(struct seq_file *s, void *v)
1162 /* nothing allocated */
1165 static int _sdma_cpu_list_seq_show(struct seq_file *s, void *v)
1167 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
1168 struct hfi1_devdata *dd = dd_from_dev(ibd);
1172 sdma_seqfile_dump_cpu_list(s, dd, (unsigned long)i);
1176 DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list);
1177 DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list)
1178 DEBUGFS_FILE_OPS(sdma_cpu_list);
1180 void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
1182 char name[sizeof("port0counters") + 1];
1184 struct hfi1_devdata *dd = dd_from_dev(ibd);
1185 struct hfi1_pportdata *ppd;
1186 struct dentry *root;
1187 int unit = dd->unit;
1192 snprintf(name, sizeof(name), "%s_%d", class_name(), unit);
1193 snprintf(link, sizeof(link), "%d", unit);
1194 root = debugfs_create_dir(name, hfi1_dbg_root);
1195 ibd->hfi1_ibdev_dbg = root;
1197 ibd->hfi1_ibdev_link =
1198 debugfs_create_symlink(link, hfi1_dbg_root, name);
1200 debugfs_create_file("opcode_stats", 0444, root, ibd,
1201 &_opcode_stats_file_ops);
1202 debugfs_create_file("tx_opcode_stats", 0444, root, ibd,
1203 &_tx_opcode_stats_file_ops);
1204 debugfs_create_file("ctx_stats", 0444, root, ibd, &_ctx_stats_file_ops);
1205 debugfs_create_file("qp_stats", 0444, root, ibd, &_qp_stats_file_ops);
1206 debugfs_create_file("sdes", 0444, root, ibd, &_sdes_file_ops);
1207 debugfs_create_file("rcds", 0444, root, ibd, &_rcds_file_ops);
1208 debugfs_create_file("pios", 0444, root, ibd, &_pios_file_ops);
1209 debugfs_create_file("sdma_cpu_list", 0444, root, ibd,
1210 &_sdma_cpu_list_file_ops);
1212 /* dev counter files */
1213 for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)
1214 debugfs_create_file(cntr_ops[i].name, 0444, root, dd,
1217 /* per port files */
1218 for (ppd = dd->pport, j = 0; j < dd->num_pports; j++, ppd++)
1219 for (i = 0; i < ARRAY_SIZE(port_cntr_ops); i++) {
1222 port_cntr_ops[i].name,
1224 debugfs_create_file(name,
1225 !port_cntr_ops[i].ops.write ?
1228 root, ppd, &port_cntr_ops[i].ops);
1231 hfi1_fault_init_debugfs(ibd);
1234 void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
1238 hfi1_fault_exit_debugfs(ibd);
1239 debugfs_remove(ibd->hfi1_ibdev_link);
1240 debugfs_remove_recursive(ibd->hfi1_ibdev_dbg);
1242 ibd->hfi1_ibdev_dbg = NULL;
1246 * driver stats field names, one line per stat, single string. Used by
1247 * programs like hfistats to print the stats in a way which works for
1248 * different versions of drivers, without changing program source.
1249 * if hfi1_ib_stats changes, this needs to change. Names need to be
1250 * 12 chars or less (w/o newline), for proper display by hfistats utility.
1252 static const char * const hfi1_statnames[] = {
1253 /* must be element 0*/
1266 static void *_driver_stats_names_seq_start(struct seq_file *s, loff_t *pos)
1268 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1273 static void *_driver_stats_names_seq_next(
1279 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1284 static void _driver_stats_names_seq_stop(struct seq_file *s, void *v)
1288 static int _driver_stats_names_seq_show(struct seq_file *s, void *v)
1292 seq_printf(s, "%s\n", hfi1_statnames[*spos]);
1296 DEBUGFS_SEQ_FILE_OPS(driver_stats_names);
1297 DEBUGFS_SEQ_FILE_OPEN(driver_stats_names)
1298 DEBUGFS_FILE_OPS(driver_stats_names);
1300 static void *_driver_stats_seq_start(struct seq_file *s, loff_t *pos)
1302 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1307 static void *_driver_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
1310 if (*pos >= ARRAY_SIZE(hfi1_statnames))
1315 static void _driver_stats_seq_stop(struct seq_file *s, void *v)
1319 static void hfi1_sps_show_ints(struct seq_file *s)
1321 unsigned long index, flags;
1322 struct hfi1_devdata *dd;
1325 xa_lock_irqsave(&hfi1_dev_table, flags);
1326 xa_for_each(&hfi1_dev_table, index, dd) {
1327 sps_ints += get_all_cpu_total(dd->int_counter);
1329 xa_unlock_irqrestore(&hfi1_dev_table, flags);
1330 seq_write(s, &sps_ints, sizeof(u64));
1333 static int _driver_stats_seq_show(struct seq_file *s, void *v)
1336 u64 *stats = (u64 *)&hfi1_stats;
1338 /* special case for interrupts */
1340 hfi1_sps_show_ints(s);
1342 seq_write(s, stats + *spos, sizeof(u64));
1346 DEBUGFS_SEQ_FILE_OPS(driver_stats);
1347 DEBUGFS_SEQ_FILE_OPEN(driver_stats)
1348 DEBUGFS_FILE_OPS(driver_stats);
1350 void hfi1_dbg_init(void)
1352 hfi1_dbg_root = debugfs_create_dir(DRIVER_NAME, NULL);
1353 debugfs_create_file("driver_stats_names", 0444, hfi1_dbg_root, NULL,
1354 &_driver_stats_names_file_ops);
1355 debugfs_create_file("driver_stats", 0444, hfi1_dbg_root, NULL,
1356 &_driver_stats_file_ops);
1359 void hfi1_dbg_exit(void)
1361 debugfs_remove_recursive(hfi1_dbg_root);
1362 hfi1_dbg_root = NULL;