1/* 2 * Copyright(c) 2015-2018 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/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> 56 57#include "hfi.h" 58#include "trace.h" 59#include "debugfs.h" 60#include "device.h" 61#include "qp.h" 62#include "sdma.h" 63#include "fault.h" 64 65static struct dentry *hfi1_dbg_root; 66 67/* wrappers to enforce srcu in seq file */ 68ssize_t hfi1_seq_read(struct file *file, char __user *buf, size_t size, 69 loff_t *ppos) 70{ 71 struct dentry *d = file->f_path.dentry; 72 ssize_t r; 73 74 r = debugfs_file_get(d); 75 if (unlikely(r)) 76 return r; 77 r = seq_read(file, buf, size, ppos); 78 debugfs_file_put(d); 79 return r; 80} 81 82loff_t hfi1_seq_lseek(struct file *file, loff_t offset, int whence) 83{ 84 struct dentry *d = file->f_path.dentry; 85 loff_t r; 86 87 r = debugfs_file_get(d); 88 if (unlikely(r)) 89 return r; 90 r = seq_lseek(file, offset, whence); 91 debugfs_file_put(d); 92 return r; 93} 94 95#define private2dd(file) (file_inode(file)->i_private) 96#define private2ppd(file) (file_inode(file)->i_private) 97 98static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos) 99{ 100 struct hfi1_opcode_stats_perctx *opstats; 101 102 if (*pos >= ARRAY_SIZE(opstats->stats)) 103 return NULL; 104 return pos; 105} 106 107static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) 108{ 109 struct hfi1_opcode_stats_perctx *opstats; 110 111 ++*pos; 112 if (*pos >= ARRAY_SIZE(opstats->stats)) 113 return NULL; 114 return pos; 115} 116 117static void _opcode_stats_seq_stop(struct seq_file *s, void *v) 118{ 119} 120 121static int opcode_stats_show(struct seq_file *s, u8 i, u64 packets, u64 bytes) 122{ 123 if (!packets && !bytes) 124 return SEQ_SKIP; 125 seq_printf(s, "%02x %llu/%llu\n", i, 126 (unsigned long long)packets, 127 (unsigned long long)bytes); 128 129 return 0; 130} 131 132static int _opcode_stats_seq_show(struct seq_file *s, void *v) 133{ 134 loff_t *spos = v; 135 loff_t i = *spos, j; 136 u64 n_packets = 0, n_bytes = 0; 137 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 138 struct hfi1_devdata *dd = dd_from_dev(ibd); 139 struct hfi1_ctxtdata *rcd; 140 141 for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) { 142 rcd = hfi1_rcd_get_by_index(dd, j); 143 if (rcd) { 144 n_packets += rcd->opstats->stats[i].n_packets; 145 n_bytes += rcd->opstats->stats[i].n_bytes; 146 } 147 hfi1_rcd_put(rcd); 148 } 149 return opcode_stats_show(s, i, n_packets, n_bytes); 150} 151 152DEBUGFS_SEQ_FILE_OPS(opcode_stats); 153DEBUGFS_SEQ_FILE_OPEN(opcode_stats) 154DEBUGFS_FILE_OPS(opcode_stats); 155 156static void *_tx_opcode_stats_seq_start(struct seq_file *s, loff_t *pos) 157{ 158 return _opcode_stats_seq_start(s, pos); 159} 160 161static void *_tx_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) 162{ 163 return _opcode_stats_seq_next(s, v, pos); 164} 165 166static void _tx_opcode_stats_seq_stop(struct seq_file *s, void *v) 167{ 168} 169 170static int _tx_opcode_stats_seq_show(struct seq_file *s, void *v) 171{ 172 loff_t *spos = v; 173 loff_t i = *spos; 174 int j; 175 u64 n_packets = 0, n_bytes = 0; 176 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 177 struct hfi1_devdata *dd = dd_from_dev(ibd); 178 179 for_each_possible_cpu(j) { 180 struct hfi1_opcode_stats_perctx *s = 181 per_cpu_ptr(dd->tx_opstats, j); 182 n_packets += s->stats[i].n_packets; 183 n_bytes += s->stats[i].n_bytes; 184 } 185 return opcode_stats_show(s, i, n_packets, n_bytes); 186} 187 188DEBUGFS_SEQ_FILE_OPS(tx_opcode_stats); 189DEBUGFS_SEQ_FILE_OPEN(tx_opcode_stats) 190DEBUGFS_FILE_OPS(tx_opcode_stats); 191 192static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos) 193{ 194 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 195 struct hfi1_devdata *dd = dd_from_dev(ibd); 196 197 if (!*pos) 198 return SEQ_START_TOKEN; 199 if (*pos >= dd->first_dyn_alloc_ctxt) 200 return NULL; 201 return pos; 202} 203 204static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) 205{ 206 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 207 struct hfi1_devdata *dd = dd_from_dev(ibd); 208 209 if (v == SEQ_START_TOKEN) 210 return pos; 211 212 ++*pos; 213 if (*pos >= dd->first_dyn_alloc_ctxt) 214 return NULL; 215 return pos; 216} 217 218static void _ctx_stats_seq_stop(struct seq_file *s, void *v) 219{ 220 /* nothing allocated */ 221} 222 223static int _ctx_stats_seq_show(struct seq_file *s, void *v) 224{ 225 loff_t *spos; 226 loff_t i, j; 227 u64 n_packets = 0; 228 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 229 struct hfi1_devdata *dd = dd_from_dev(ibd); 230 struct hfi1_ctxtdata *rcd; 231 232 if (v == SEQ_START_TOKEN) { 233 seq_puts(s, "Ctx:npkts\n"); 234 return 0; 235 } 236 237 spos = v; 238 i = *spos; 239 240 rcd = hfi1_rcd_get_by_index_safe(dd, i); 241 if (!rcd) 242 return SEQ_SKIP; 243 244 for (j = 0; j < ARRAY_SIZE(rcd->opstats->stats); j++) 245 n_packets += rcd->opstats->stats[j].n_packets; 246 247 hfi1_rcd_put(rcd); 248 249 if (!n_packets) 250 return SEQ_SKIP; 251 252 seq_printf(s, " %llu:%llu\n", i, n_packets); 253 return 0; 254} 255 256DEBUGFS_SEQ_FILE_OPS(ctx_stats); 257DEBUGFS_SEQ_FILE_OPEN(ctx_stats) 258DEBUGFS_FILE_OPS(ctx_stats); 259 260static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos) 261 __acquires(RCU) 262{ 263 struct rvt_qp_iter *iter; 264 loff_t n = *pos; 265 266 iter = rvt_qp_iter_init(s->private, 0, NULL); 267 268 /* stop calls rcu_read_unlock */ 269 rcu_read_lock(); 270 271 if (!iter) 272 return NULL; 273 274 do { 275 if (rvt_qp_iter_next(iter)) { 276 kfree(iter); 277 return NULL; 278 } 279 } while (n--); 280 281 return iter; 282} 283 284static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr, 285 loff_t *pos) 286 __must_hold(RCU) 287{ 288 struct rvt_qp_iter *iter = iter_ptr; 289 290 (*pos)++; 291 292 if (rvt_qp_iter_next(iter)) { 293 kfree(iter); 294 return NULL; 295 } 296 297 return iter; 298} 299 300static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr) 301 __releases(RCU) 302{ 303 rcu_read_unlock(); 304} 305 306static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr) 307{ 308 struct rvt_qp_iter *iter = iter_ptr; 309 310 if (!iter) 311 return 0; 312 313 qp_iter_print(s, iter); 314 315 return 0; 316} 317 318DEBUGFS_SEQ_FILE_OPS(qp_stats); 319DEBUGFS_SEQ_FILE_OPEN(qp_stats) 320DEBUGFS_FILE_OPS(qp_stats); 321 322static void *_sdes_seq_start(struct seq_file *s, loff_t *pos) 323{ 324 struct hfi1_ibdev *ibd; 325 struct hfi1_devdata *dd; 326 327 ibd = (struct hfi1_ibdev *)s->private; 328 dd = dd_from_dev(ibd); 329 if (!dd->per_sdma || *pos >= dd->num_sdma) 330 return NULL; 331 return pos; 332} 333 334static void *_sdes_seq_next(struct seq_file *s, void *v, loff_t *pos) 335{ 336 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 337 struct hfi1_devdata *dd = dd_from_dev(ibd); 338 339 ++*pos; 340 if (!dd->per_sdma || *pos >= dd->num_sdma) 341 return NULL; 342 return pos; 343} 344 345static void _sdes_seq_stop(struct seq_file *s, void *v) 346{ 347} 348 349static int _sdes_seq_show(struct seq_file *s, void *v) 350{ 351 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 352 struct hfi1_devdata *dd = dd_from_dev(ibd); 353 loff_t *spos = v; 354 loff_t i = *spos; 355 356 sdma_seqfile_dump_sde(s, &dd->per_sdma[i]); 357 return 0; 358} 359 360DEBUGFS_SEQ_FILE_OPS(sdes); 361DEBUGFS_SEQ_FILE_OPEN(sdes) 362DEBUGFS_FILE_OPS(sdes); 363 364static void *_rcds_seq_start(struct seq_file *s, loff_t *pos) 365{ 366 struct hfi1_ibdev *ibd; 367 struct hfi1_devdata *dd; 368 369 ibd = (struct hfi1_ibdev *)s->private; 370 dd = dd_from_dev(ibd); 371 if (!dd->rcd || *pos >= dd->n_krcv_queues) 372 return NULL; 373 return pos; 374} 375 376static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos) 377{ 378 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 379 struct hfi1_devdata *dd = dd_from_dev(ibd); 380 381 ++*pos; 382 if (!dd->rcd || *pos >= dd->num_rcv_contexts) 383 return NULL; 384 return pos; 385} 386 387static void _rcds_seq_stop(struct seq_file *s, void *v) 388{ 389} 390 391static int _rcds_seq_show(struct seq_file *s, void *v) 392{ 393 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 394 struct hfi1_devdata *dd = dd_from_dev(ibd); 395 struct hfi1_ctxtdata *rcd; 396 loff_t *spos = v; 397 loff_t i = *spos; 398 399 rcd = hfi1_rcd_get_by_index_safe(dd, i); 400 if (rcd) 401 seqfile_dump_rcd(s, rcd); 402 hfi1_rcd_put(rcd); 403 return 0; 404} 405 406DEBUGFS_SEQ_FILE_OPS(rcds); 407DEBUGFS_SEQ_FILE_OPEN(rcds) 408DEBUGFS_FILE_OPS(rcds); 409 410static void *_pios_seq_start(struct seq_file *s, loff_t *pos) 411{ 412 struct hfi1_ibdev *ibd; 413 struct hfi1_devdata *dd; 414 415 ibd = (struct hfi1_ibdev *)s->private; 416 dd = dd_from_dev(ibd); 417 if (!dd->send_contexts || *pos >= dd->num_send_contexts) 418 return NULL; 419 return pos; 420} 421 422static void *_pios_seq_next(struct seq_file *s, void *v, loff_t *pos) 423{ 424 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 425 struct hfi1_devdata *dd = dd_from_dev(ibd); 426 427 ++*pos; 428 if (!dd->send_contexts || *pos >= dd->num_send_contexts) 429 return NULL; 430 return pos; 431} 432 433static void _pios_seq_stop(struct seq_file *s, void *v) 434{ 435} 436 437static int _pios_seq_show(struct seq_file *s, void *v) 438{ 439 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 440 struct hfi1_devdata *dd = dd_from_dev(ibd); 441 struct send_context_info *sci; 442 loff_t *spos = v; 443 loff_t i = *spos; 444 unsigned long flags; 445 446 spin_lock_irqsave(&dd->sc_lock, flags); 447 sci = &dd->send_contexts[i]; 448 if (sci && sci->type != SC_USER && sci->allocated && sci->sc) 449 seqfile_dump_sci(s, i, sci); 450 spin_unlock_irqrestore(&dd->sc_lock, flags); 451 return 0; 452} 453 454DEBUGFS_SEQ_FILE_OPS(pios); 455DEBUGFS_SEQ_FILE_OPEN(pios) 456DEBUGFS_FILE_OPS(pios); 457 458/* read the per-device counters */ 459static ssize_t dev_counters_read(struct file *file, char __user *buf, 460 size_t count, loff_t *ppos) 461{ 462 u64 *counters; 463 size_t avail; 464 struct hfi1_devdata *dd; 465 ssize_t rval; 466 467 dd = private2dd(file); 468 avail = hfi1_read_cntrs(dd, NULL, &counters); 469 rval = simple_read_from_buffer(buf, count, ppos, counters, avail); 470 return rval; 471} 472 473/* read the per-device counters */ 474static ssize_t dev_names_read(struct file *file, char __user *buf, 475 size_t count, loff_t *ppos) 476{ 477 char *names; 478 size_t avail; 479 struct hfi1_devdata *dd; 480 ssize_t rval; 481 482 dd = private2dd(file); 483 avail = hfi1_read_cntrs(dd, &names, NULL); 484 rval = simple_read_from_buffer(buf, count, ppos, names, avail); 485 return rval; 486} 487 488struct counter_info { 489 char *name; 490 const struct file_operations ops; 491}; 492 493/* 494 * Could use file_inode(file)->i_ino to figure out which file, 495 * instead of separate routine for each, but for now, this works... 496 */ 497 498/* read the per-port names (same for each port) */ 499static ssize_t portnames_read(struct file *file, char __user *buf, 500 size_t count, loff_t *ppos) 501{ 502 char *names; 503 size_t avail; 504 struct hfi1_devdata *dd; 505 ssize_t rval; 506 507 dd = private2dd(file); 508 avail = hfi1_read_portcntrs(dd->pport, &names, NULL); 509 rval = simple_read_from_buffer(buf, count, ppos, names, avail); 510 return rval; 511} 512 513/* read the per-port counters */ 514static ssize_t portcntrs_debugfs_read(struct file *file, char __user *buf, 515 size_t count, loff_t *ppos) 516{ 517 u64 *counters; 518 size_t avail; 519 struct hfi1_pportdata *ppd; 520 ssize_t rval; 521 522 ppd = private2ppd(file); 523 avail = hfi1_read_portcntrs(ppd, NULL, &counters); 524 rval = simple_read_from_buffer(buf, count, ppos, counters, avail); 525 return rval; 526} 527 528static void check_dyn_flag(u64 scratch0, char *p, int size, int *used, 529 int this_hfi, int hfi, u32 flag, const char *what) 530{ 531 u32 mask; 532 533 mask = flag << (hfi ? CR_DYN_SHIFT : 0); 534 if (scratch0 & mask) { 535 *used += scnprintf(p + *used, size - *used, 536 " 0x%08x - HFI%d %s in use, %s device\n", 537 mask, hfi, what, 538 this_hfi == hfi ? "this" : "other"); 539 } 540} 541 542static ssize_t asic_flags_read(struct file *file, char __user *buf, 543 size_t count, loff_t *ppos) 544{ 545 struct hfi1_pportdata *ppd; 546 struct hfi1_devdata *dd; 547 u64 scratch0; 548 char *tmp; 549 int ret = 0; 550 int size; 551 int used; 552 int i; 553 554 ppd = private2ppd(file); 555 dd = ppd->dd; 556 size = PAGE_SIZE; 557 used = 0; 558 tmp = kmalloc(size, GFP_KERNEL); 559 if (!tmp) 560 return -ENOMEM; 561 562 scratch0 = read_csr(dd, ASIC_CFG_SCRATCH); 563 used += scnprintf(tmp + used, size - used, 564 "Resource flags: 0x%016llx\n", scratch0); 565 566 /* check permanent flag */ 567 if (scratch0 & CR_THERM_INIT) { 568 used += scnprintf(tmp + used, size - used, 569 " 0x%08x - thermal monitoring initialized\n", 570 (u32)CR_THERM_INIT); 571 } 572 573 /* check each dynamic flag on each HFI */ 574 for (i = 0; i < 2; i++) { 575 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, 576 CR_SBUS, "SBus"); 577 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, 578 CR_EPROM, "EPROM"); 579 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, 580 CR_I2C1, "i2c chain 1"); 581 check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, 582 CR_I2C2, "i2c chain 2"); 583 } 584 used += scnprintf(tmp + used, size - used, "Write bits to clear\n"); 585 586 ret = simple_read_from_buffer(buf, count, ppos, tmp, used); 587 kfree(tmp); 588 return ret; 589} 590 591static ssize_t asic_flags_write(struct file *file, const char __user *buf, 592 size_t count, loff_t *ppos) 593{ 594 struct hfi1_pportdata *ppd; 595 struct hfi1_devdata *dd; 596 char *buff; 597 int ret; 598 unsigned long long value; 599 u64 scratch0; 600 u64 clear; 601 602 ppd = private2ppd(file); 603 dd = ppd->dd; 604 605 /* zero terminate and read the expected integer */ 606 buff = memdup_user_nul(buf, count); 607 if (IS_ERR(buff)) 608 return PTR_ERR(buff); 609 610 ret = kstrtoull(buff, 0, &value); 611 if (ret) 612 goto do_free; 613 clear = value; 614 615 /* obtain exclusive access */ 616 mutex_lock(&dd->asic_data->asic_resource_mutex); 617 acquire_hw_mutex(dd); 618 619 scratch0 = read_csr(dd, ASIC_CFG_SCRATCH); 620 scratch0 &= ~clear; 621 write_csr(dd, ASIC_CFG_SCRATCH, scratch0); 622 /* force write to be visible to other HFI on another OS */ 623 (void)read_csr(dd, ASIC_CFG_SCRATCH); 624 625 release_hw_mutex(dd); 626 mutex_unlock(&dd->asic_data->asic_resource_mutex); 627 628 /* return the number of bytes written */ 629 ret = count; 630 631 do_free: 632 kfree(buff); 633 return ret; 634} 635 636/* read the dc8051 memory */ 637static ssize_t dc8051_memory_read(struct file *file, char __user *buf, 638 size_t count, loff_t *ppos) 639{ 640 struct hfi1_pportdata *ppd = private2ppd(file); 641 ssize_t rval; 642 void *tmp; 643 loff_t start, end; 644 645 /* the checks below expect the position to be positive */ 646 if (*ppos < 0) 647 return -EINVAL; 648 649 tmp = kzalloc(DC8051_DATA_MEM_SIZE, GFP_KERNEL); 650 if (!tmp) 651 return -ENOMEM; 652 653 /* 654 * Fill in the requested portion of the temporary buffer from the 655 * 8051 memory. The 8051 memory read is done in terms of 8 bytes. 656 * Adjust start and end to fit. Skip reading anything if out of 657 * range. 658 */ 659 start = *ppos & ~0x7; /* round down */ 660 if (start < DC8051_DATA_MEM_SIZE) { 661 end = (*ppos + count + 7) & ~0x7; /* round up */ 662 if (end > DC8051_DATA_MEM_SIZE) 663 end = DC8051_DATA_MEM_SIZE; 664 rval = read_8051_data(ppd->dd, start, end - start, 665 (u64 *)(tmp + start)); 666 if (rval) 667 goto done; 668 } 669 670 rval = simple_read_from_buffer(buf, count, ppos, tmp, 671 DC8051_DATA_MEM_SIZE); 672done: 673 kfree(tmp); 674 return rval; 675} 676 677static ssize_t debugfs_lcb_read(struct file *file, char __user *buf, 678 size_t count, loff_t *ppos) 679{ 680 struct hfi1_pportdata *ppd = private2ppd(file); 681 struct hfi1_devdata *dd = ppd->dd; 682 unsigned long total, csr_off; 683 u64 data; 684 685 if (*ppos < 0) 686 return -EINVAL; 687 /* only read 8 byte quantities */ 688 if ((count % 8) != 0) 689 return -EINVAL; 690 /* offset must be 8-byte aligned */ 691 if ((*ppos % 8) != 0) 692 return -EINVAL; 693 /* do nothing if out of range or zero count */ 694 if (*ppos >= (LCB_END - LCB_START) || !count) 695 return 0; 696 /* reduce count if needed */ 697 if (*ppos + count > LCB_END - LCB_START) 698 count = (LCB_END - LCB_START) - *ppos; 699 700 csr_off = LCB_START + *ppos; 701 for (total = 0; total < count; total += 8, csr_off += 8) { 702 if (read_lcb_csr(dd, csr_off, (u64 *)&data)) 703 break; /* failed */ 704 if (put_user(data, (unsigned long __user *)(buf + total))) 705 break; 706 } 707 *ppos += total; 708 return total; 709} 710 711static ssize_t debugfs_lcb_write(struct file *file, const char __user *buf, 712 size_t count, loff_t *ppos) 713{ 714 struct hfi1_pportdata *ppd = private2ppd(file); 715 struct hfi1_devdata *dd = ppd->dd; 716 unsigned long total, csr_off, data; 717 718 if (*ppos < 0) 719 return -EINVAL; 720 /* only write 8 byte quantities */ 721 if ((count % 8) != 0) 722 return -EINVAL; 723 /* offset must be 8-byte aligned */ 724 if ((*ppos % 8) != 0) 725 return -EINVAL; 726 /* do nothing if out of range or zero count */ 727 if (*ppos >= (LCB_END - LCB_START) || !count) 728 return 0; 729 /* reduce count if needed */ 730 if (*ppos + count > LCB_END - LCB_START) 731 count = (LCB_END - LCB_START) - *ppos; 732 733 csr_off = LCB_START + *ppos; 734 for (total = 0; total < count; total += 8, csr_off += 8) { 735 if (get_user(data, (unsigned long __user *)(buf + total))) 736 break; 737 if (write_lcb_csr(dd, csr_off, data)) 738 break; /* failed */ 739 } 740 *ppos += total; 741 return total; 742} 743 744/* 745 * read the per-port QSFP data for ppd 746 */ 747static ssize_t qsfp_debugfs_dump(struct file *file, char __user *buf, 748 size_t count, loff_t *ppos) 749{ 750 struct hfi1_pportdata *ppd; 751 char *tmp; 752 int ret; 753 754 ppd = private2ppd(file); 755 tmp = kmalloc(PAGE_SIZE, GFP_KERNEL); 756 if (!tmp) 757 return -ENOMEM; 758 759 ret = qsfp_dump(ppd, tmp, PAGE_SIZE); 760 if (ret > 0) 761 ret = simple_read_from_buffer(buf, count, ppos, tmp, ret); 762 kfree(tmp); 763 return ret; 764} 765 766/* Do an i2c write operation on the chain for the given HFI. */ 767static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf, 768 size_t count, loff_t *ppos, u32 target) 769{ 770 struct hfi1_pportdata *ppd; 771 char *buff; 772 int ret; 773 int i2c_addr; 774 int offset; 775 int total_written; 776 777 ppd = private2ppd(file); 778 779 /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */ 780 i2c_addr = (*ppos >> 16) & 0xffff; 781 offset = *ppos & 0xffff; 782 783 /* explicitly reject invalid address 0 to catch cp and cat */ 784 if (i2c_addr == 0) 785 return -EINVAL; 786 787 buff = memdup_user(buf, count); 788 if (IS_ERR(buff)) 789 return PTR_ERR(buff); 790 791 total_written = i2c_write(ppd, target, i2c_addr, offset, buff, count); 792 if (total_written < 0) { 793 ret = total_written; 794 goto _free; 795 } 796 797 *ppos += total_written; 798 799 ret = total_written; 800 801 _free: 802 kfree(buff); 803 return ret; 804} 805 806/* Do an i2c write operation on chain for HFI 0. */ 807static ssize_t i2c1_debugfs_write(struct file *file, const char __user *buf, 808 size_t count, loff_t *ppos) 809{ 810 return __i2c_debugfs_write(file, buf, count, ppos, 0); 811} 812 813/* Do an i2c write operation on chain for HFI 1. */ 814static ssize_t i2c2_debugfs_write(struct file *file, const char __user *buf, 815 size_t count, loff_t *ppos) 816{ 817 return __i2c_debugfs_write(file, buf, count, ppos, 1); 818} 819 820/* Do an i2c read operation on the chain for the given HFI. */ 821static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf, 822 size_t count, loff_t *ppos, u32 target) 823{ 824 struct hfi1_pportdata *ppd; 825 char *buff; 826 int ret; 827 int i2c_addr; 828 int offset; 829 int total_read; 830 831 ppd = private2ppd(file); 832 833 /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */ 834 i2c_addr = (*ppos >> 16) & 0xffff; 835 offset = *ppos & 0xffff; 836 837 /* explicitly reject invalid address 0 to catch cp and cat */ 838 if (i2c_addr == 0) 839 return -EINVAL; 840 841 buff = kmalloc(count, GFP_KERNEL); 842 if (!buff) 843 return -ENOMEM; 844 845 total_read = i2c_read(ppd, target, i2c_addr, offset, buff, count); 846 if (total_read < 0) { 847 ret = total_read; 848 goto _free; 849 } 850 851 *ppos += total_read; 852 853 ret = copy_to_user(buf, buff, total_read); 854 if (ret > 0) { 855 ret = -EFAULT; 856 goto _free; 857 } 858 859 ret = total_read; 860 861 _free: 862 kfree(buff); 863 return ret; 864} 865 866/* Do an i2c read operation on chain for HFI 0. */ 867static ssize_t i2c1_debugfs_read(struct file *file, char __user *buf, 868 size_t count, loff_t *ppos) 869{ 870 return __i2c_debugfs_read(file, buf, count, ppos, 0); 871} 872 873/* Do an i2c read operation on chain for HFI 1. */ 874static ssize_t i2c2_debugfs_read(struct file *file, char __user *buf, 875 size_t count, loff_t *ppos) 876{ 877 return __i2c_debugfs_read(file, buf, count, ppos, 1); 878} 879 880/* Do a QSFP write operation on the i2c chain for the given HFI. */ 881static ssize_t __qsfp_debugfs_write(struct file *file, const char __user *buf, 882 size_t count, loff_t *ppos, u32 target) 883{ 884 struct hfi1_pportdata *ppd; 885 char *buff; 886 int ret; 887 int total_written; 888 889 if (*ppos + count > QSFP_PAGESIZE * 4) /* base page + page00-page03 */ 890 return -EINVAL; 891 892 ppd = private2ppd(file); 893 894 buff = memdup_user(buf, count); 895 if (IS_ERR(buff)) 896 return PTR_ERR(buff); 897 898 total_written = qsfp_write(ppd, target, *ppos, buff, count); 899 if (total_written < 0) { 900 ret = total_written; 901 goto _free; 902 } 903 904 *ppos += total_written; 905 906 ret = total_written; 907 908 _free: 909 kfree(buff); 910 return ret; 911} 912 913/* Do a QSFP write operation on i2c chain for HFI 0. */ 914static ssize_t qsfp1_debugfs_write(struct file *file, const char __user *buf, 915 size_t count, loff_t *ppos) 916{ 917 return __qsfp_debugfs_write(file, buf, count, ppos, 0); 918} 919 920/* Do a QSFP write operation on i2c chain for HFI 1. */ 921static ssize_t qsfp2_debugfs_write(struct file *file, const char __user *buf, 922 size_t count, loff_t *ppos) 923{ 924 return __qsfp_debugfs_write(file, buf, count, ppos, 1); 925} 926 927/* Do a QSFP read operation on the i2c chain for the given HFI. */ 928static ssize_t __qsfp_debugfs_read(struct file *file, char __user *buf, 929 size_t count, loff_t *ppos, u32 target) 930{ 931 struct hfi1_pportdata *ppd; 932 char *buff; 933 int ret; 934 int total_read; 935 936 if (*ppos + count > QSFP_PAGESIZE * 4) { /* base page + page00-page03 */ 937 ret = -EINVAL; 938 goto _return; 939 } 940 941 ppd = private2ppd(file); 942 943 buff = kmalloc(count, GFP_KERNEL); 944 if (!buff) { 945 ret = -ENOMEM; 946 goto _return; 947 } 948 949 total_read = qsfp_read(ppd, target, *ppos, buff, count); 950 if (total_read < 0) { 951 ret = total_read; 952 goto _free; 953 } 954 955 *ppos += total_read; 956 957 ret = copy_to_user(buf, buff, total_read); 958 if (ret > 0) { 959 ret = -EFAULT; 960 goto _free; 961 } 962 963 ret = total_read; 964 965 _free: 966 kfree(buff); 967 _return: 968 return ret; 969} 970 971/* Do a QSFP read operation on i2c chain for HFI 0. */ 972static ssize_t qsfp1_debugfs_read(struct file *file, char __user *buf, 973 size_t count, loff_t *ppos) 974{ 975 return __qsfp_debugfs_read(file, buf, count, ppos, 0); 976} 977 978/* Do a QSFP read operation on i2c chain for HFI 1. */ 979static ssize_t qsfp2_debugfs_read(struct file *file, char __user *buf, 980 size_t count, loff_t *ppos) 981{ 982 return __qsfp_debugfs_read(file, buf, count, ppos, 1); 983} 984 985static int __i2c_debugfs_open(struct inode *in, struct file *fp, u32 target) 986{ 987 struct hfi1_pportdata *ppd; 988 989 ppd = private2ppd(fp); 990 991 return acquire_chip_resource(ppd->dd, i2c_target(target), 0); 992} 993 994static int i2c1_debugfs_open(struct inode *in, struct file *fp) 995{ 996 return __i2c_debugfs_open(in, fp, 0); 997} 998 999static int i2c2_debugfs_open(struct inode *in, struct file *fp) 1000{ 1001 return __i2c_debugfs_open(in, fp, 1); 1002} 1003 1004static int __i2c_debugfs_release(struct inode *in, struct file *fp, u32 target) 1005{ 1006 struct hfi1_pportdata *ppd; 1007 1008 ppd = private2ppd(fp); 1009 1010 release_chip_resource(ppd->dd, i2c_target(target)); 1011 1012 return 0; 1013} 1014 1015static int i2c1_debugfs_release(struct inode *in, struct file *fp) 1016{ 1017 return __i2c_debugfs_release(in, fp, 0); 1018} 1019 1020static int i2c2_debugfs_release(struct inode *in, struct file *fp) 1021{ 1022 return __i2c_debugfs_release(in, fp, 1); 1023} 1024 1025static int __qsfp_debugfs_open(struct inode *in, struct file *fp, u32 target) 1026{ 1027 struct hfi1_pportdata *ppd; 1028 1029 ppd = private2ppd(fp); 1030 1031 return acquire_chip_resource(ppd->dd, i2c_target(target), 0); 1032} 1033 1034static int qsfp1_debugfs_open(struct inode *in, struct file *fp) 1035{ 1036 return __qsfp_debugfs_open(in, fp, 0); 1037} 1038 1039static int qsfp2_debugfs_open(struct inode *in, struct file *fp) 1040{ 1041 return __qsfp_debugfs_open(in, fp, 1); 1042} 1043 1044static int __qsfp_debugfs_release(struct inode *in, struct file *fp, u32 target) 1045{ 1046 struct hfi1_pportdata *ppd; 1047 1048 ppd = private2ppd(fp); 1049 1050 release_chip_resource(ppd->dd, i2c_target(target)); 1051 1052 return 0; 1053} 1054 1055static int qsfp1_debugfs_release(struct inode *in, struct file *fp) 1056{ 1057 return __qsfp_debugfs_release(in, fp, 0); 1058} 1059 1060static int qsfp2_debugfs_release(struct inode *in, struct file *fp) 1061{ 1062 return __qsfp_debugfs_release(in, fp, 1); 1063} 1064 1065#define EXPROM_WRITE_ENABLE BIT_ULL(14) 1066 1067static bool exprom_wp_disabled; 1068 1069static int exprom_wp_set(struct hfi1_devdata *dd, bool disable) 1070{ 1071 u64 gpio_val = 0; 1072 1073 if (disable) { 1074 gpio_val = EXPROM_WRITE_ENABLE; 1075 exprom_wp_disabled = true; 1076 dd_dev_info(dd, "Disable Expansion ROM Write Protection\n"); 1077 } else { 1078 exprom_wp_disabled = false; 1079 dd_dev_info(dd, "Enable Expansion ROM Write Protection\n"); 1080 } 1081 1082 write_csr(dd, ASIC_GPIO_OUT, gpio_val); 1083 write_csr(dd, ASIC_GPIO_OE, gpio_val); 1084 1085 return 0; 1086} 1087 1088static ssize_t exprom_wp_debugfs_read(struct file *file, char __user *buf, 1089 size_t count, loff_t *ppos) 1090{ 1091 return 0; 1092} 1093 1094static ssize_t exprom_wp_debugfs_write(struct file *file, 1095 const char __user *buf, size_t count, 1096 loff_t *ppos) 1097{ 1098 struct hfi1_pportdata *ppd = private2ppd(file); 1099 char cdata; 1100 1101 if (count != 1) 1102 return -EINVAL; 1103 if (get_user(cdata, buf)) 1104 return -EFAULT; 1105 if (cdata == '0') 1106 exprom_wp_set(ppd->dd, false); 1107 else if (cdata == '1') 1108 exprom_wp_set(ppd->dd, true); 1109 else 1110 return -EINVAL; 1111 1112 return 1; 1113} 1114 1115static unsigned long exprom_in_use; 1116 1117static int exprom_wp_debugfs_open(struct inode *in, struct file *fp) 1118{ 1119 if (test_and_set_bit(0, &exprom_in_use)) 1120 return -EBUSY; 1121 1122 return 0; 1123} 1124 1125static int exprom_wp_debugfs_release(struct inode *in, struct file *fp) 1126{ 1127 struct hfi1_pportdata *ppd = private2ppd(fp); 1128 1129 if (exprom_wp_disabled) 1130 exprom_wp_set(ppd->dd, false); 1131 clear_bit(0, &exprom_in_use); 1132 1133 return 0; 1134} 1135 1136#define DEBUGFS_OPS(nm, readroutine, writeroutine) \ 1137{ \ 1138 .name = nm, \ 1139 .ops = { \ 1140 .owner = THIS_MODULE, \ 1141 .read = readroutine, \ 1142 .write = writeroutine, \ 1143 .llseek = generic_file_llseek, \ 1144 }, \ 1145} 1146 1147#define DEBUGFS_XOPS(nm, readf, writef, openf, releasef) \ 1148{ \ 1149 .name = nm, \ 1150 .ops = { \ 1151 .owner = THIS_MODULE, \ 1152 .read = readf, \ 1153 .write = writef, \ 1154 .llseek = generic_file_llseek, \ 1155 .open = openf, \ 1156 .release = releasef \ 1157 }, \ 1158} 1159 1160static const struct counter_info cntr_ops[] = { 1161 DEBUGFS_OPS("counter_names", dev_names_read, NULL), 1162 DEBUGFS_OPS("counters", dev_counters_read, NULL), 1163 DEBUGFS_OPS("portcounter_names", portnames_read, NULL), 1164}; 1165 1166static const struct counter_info port_cntr_ops[] = { 1167 DEBUGFS_OPS("port%dcounters", portcntrs_debugfs_read, NULL), 1168 DEBUGFS_XOPS("i2c1", i2c1_debugfs_read, i2c1_debugfs_write, 1169 i2c1_debugfs_open, i2c1_debugfs_release), 1170 DEBUGFS_XOPS("i2c2", i2c2_debugfs_read, i2c2_debugfs_write, 1171 i2c2_debugfs_open, i2c2_debugfs_release), 1172 DEBUGFS_OPS("qsfp_dump%d", qsfp_debugfs_dump, NULL), 1173 DEBUGFS_XOPS("qsfp1", qsfp1_debugfs_read, qsfp1_debugfs_write, 1174 qsfp1_debugfs_open, qsfp1_debugfs_release), 1175 DEBUGFS_XOPS("qsfp2", qsfp2_debugfs_read, qsfp2_debugfs_write, 1176 qsfp2_debugfs_open, qsfp2_debugfs_release), 1177 DEBUGFS_XOPS("exprom_wp", exprom_wp_debugfs_read, 1178 exprom_wp_debugfs_write, exprom_wp_debugfs_open, 1179 exprom_wp_debugfs_release), 1180 DEBUGFS_OPS("asic_flags", asic_flags_read, asic_flags_write), 1181 DEBUGFS_OPS("dc8051_memory", dc8051_memory_read, NULL), 1182 DEBUGFS_OPS("lcb", debugfs_lcb_read, debugfs_lcb_write), 1183}; 1184 1185static void *_sdma_cpu_list_seq_start(struct seq_file *s, loff_t *pos) 1186{ 1187 if (*pos >= num_online_cpus()) 1188 return NULL; 1189 1190 return pos; 1191} 1192 1193static void *_sdma_cpu_list_seq_next(struct seq_file *s, void *v, loff_t *pos) 1194{ 1195 ++*pos; 1196 if (*pos >= num_online_cpus()) 1197 return NULL; 1198 1199 return pos; 1200} 1201 1202static void _sdma_cpu_list_seq_stop(struct seq_file *s, void *v) 1203{ 1204 /* nothing allocated */ 1205} 1206 1207static int _sdma_cpu_list_seq_show(struct seq_file *s, void *v) 1208{ 1209 struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; 1210 struct hfi1_devdata *dd = dd_from_dev(ibd); 1211 loff_t *spos = v; 1212 loff_t i = *spos; 1213 1214 sdma_seqfile_dump_cpu_list(s, dd, (unsigned long)i); 1215 return 0; 1216} 1217 1218DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list); 1219DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list) 1220DEBUGFS_FILE_OPS(sdma_cpu_list); 1221 1222void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd) 1223{ 1224 char name[sizeof("port0counters") + 1]; 1225 char link[10]; 1226 struct hfi1_devdata *dd = dd_from_dev(ibd); 1227 struct hfi1_pportdata *ppd; 1228 struct dentry *root; 1229 int unit = dd->unit; 1230 int i, j; 1231 1232 if (!hfi1_dbg_root) 1233 return; 1234 snprintf(name, sizeof(name), "%s_%d", class_name(), unit); 1235 snprintf(link, sizeof(link), "%d", unit); 1236 root = debugfs_create_dir(name, hfi1_dbg_root); 1237 ibd->hfi1_ibdev_dbg = root; 1238 1239 ibd->hfi1_ibdev_link = 1240 debugfs_create_symlink(link, hfi1_dbg_root, name); 1241 1242 debugfs_create_file("opcode_stats", 0444, root, ibd, 1243 &_opcode_stats_file_ops); 1244 debugfs_create_file("tx_opcode_stats", 0444, root, ibd, 1245 &_tx_opcode_stats_file_ops); 1246 debugfs_create_file("ctx_stats", 0444, root, ibd, &_ctx_stats_file_ops); 1247 debugfs_create_file("qp_stats", 0444, root, ibd, &_qp_stats_file_ops); 1248 debugfs_create_file("sdes", 0444, root, ibd, &_sdes_file_ops); 1249 debugfs_create_file("rcds", 0444, root, ibd, &_rcds_file_ops); 1250 debugfs_create_file("pios", 0444, root, ibd, &_pios_file_ops); 1251 debugfs_create_file("sdma_cpu_list", 0444, root, ibd, 1252 &_sdma_cpu_list_file_ops); 1253 1254 /* dev counter files */ 1255 for (i = 0; i < ARRAY_SIZE(cntr_ops); i++) 1256 debugfs_create_file(cntr_ops[i].name, 0444, root, dd, 1257 &cntr_ops[i].ops); 1258 1259 /* per port files */ 1260 for (ppd = dd->pport, j = 0; j < dd->num_pports; j++, ppd++) 1261 for (i = 0; i < ARRAY_SIZE(port_cntr_ops); i++) { 1262 snprintf(name, 1263 sizeof(name), 1264 port_cntr_ops[i].name, 1265 j + 1); 1266 debugfs_create_file(name, 1267 !port_cntr_ops[i].ops.write ? 1268 S_IRUGO : 1269 S_IRUGO | S_IWUSR, 1270 root, ppd, &port_cntr_ops[i].ops); 1271 } 1272 1273 hfi1_fault_init_debugfs(ibd); 1274} 1275 1276void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd) 1277{ 1278 if (!hfi1_dbg_root) 1279 goto out; 1280 hfi1_fault_exit_debugfs(ibd); 1281 debugfs_remove(ibd->hfi1_ibdev_link); 1282 debugfs_remove_recursive(ibd->hfi1_ibdev_dbg); 1283out: 1284 ibd->hfi1_ibdev_dbg = NULL; 1285} 1286 1287/* 1288 * driver stats field names, one line per stat, single string. Used by 1289 * programs like hfistats to print the stats in a way which works for 1290 * different versions of drivers, without changing program source. 1291 * if hfi1_ib_stats changes, this needs to change. Names need to be 1292 * 12 chars or less (w/o newline), for proper display by hfistats utility. 1293 */ 1294static const char * const hfi1_statnames[] = { 1295 /* must be element 0*/ 1296 "KernIntr", 1297 "ErrorIntr", 1298 "Tx_Errs", 1299 "Rcv_Errs", 1300 "H/W_Errs", 1301 "NoPIOBufs", 1302 "CtxtsOpen", 1303 "RcvLen_Errs", 1304 "EgrBufFull", 1305 "EgrHdrFull" 1306}; 1307 1308static void *_driver_stats_names_seq_start(struct seq_file *s, loff_t *pos) 1309{ 1310 if (*pos >= ARRAY_SIZE(hfi1_statnames)) 1311 return NULL; 1312 return pos; 1313} 1314 1315static void *_driver_stats_names_seq_next( 1316 struct seq_file *s, 1317 void *v, 1318 loff_t *pos) 1319{ 1320 ++*pos; 1321 if (*pos >= ARRAY_SIZE(hfi1_statnames)) 1322 return NULL; 1323 return pos; 1324} 1325 1326static void _driver_stats_names_seq_stop(struct seq_file *s, void *v) 1327{ 1328} 1329 1330static int _driver_stats_names_seq_show(struct seq_file *s, void *v) 1331{ 1332 loff_t *spos = v; 1333 1334 seq_printf(s, "%s\n", hfi1_statnames[*spos]); 1335 return 0; 1336} 1337 1338DEBUGFS_SEQ_FILE_OPS(driver_stats_names); 1339DEBUGFS_SEQ_FILE_OPEN(driver_stats_names) 1340DEBUGFS_FILE_OPS(driver_stats_names); 1341 1342static void *_driver_stats_seq_start(struct seq_file *s, loff_t *pos) 1343{ 1344 if (*pos >= ARRAY_SIZE(hfi1_statnames)) 1345 return NULL; 1346 return pos; 1347} 1348 1349static void *_driver_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) 1350{ 1351 ++*pos; 1352 if (*pos >= ARRAY_SIZE(hfi1_statnames)) 1353 return NULL; 1354 return pos; 1355} 1356 1357static void _driver_stats_seq_stop(struct seq_file *s, void *v) 1358{ 1359} 1360 1361static u64 hfi1_sps_ints(void) 1362{ 1363 unsigned long index, flags; 1364 struct hfi1_devdata *dd; 1365 u64 sps_ints = 0; 1366 1367 xa_lock_irqsave(&hfi1_dev_table, flags); 1368 xa_for_each(&hfi1_dev_table, index, dd) { 1369 sps_ints += get_all_cpu_total(dd->int_counter); 1370 } 1371 xa_unlock_irqrestore(&hfi1_dev_table, flags); 1372 return sps_ints; 1373} 1374 1375static int _driver_stats_seq_show(struct seq_file *s, void *v) 1376{ 1377 loff_t *spos = v; 1378 char *buffer; 1379 u64 *stats = (u64 *)&hfi1_stats; 1380 size_t sz = seq_get_buf(s, &buffer); 1381 1382 if (sz < sizeof(u64)) 1383 return SEQ_SKIP; 1384 /* special case for interrupts */ 1385 if (*spos == 0) 1386 *(u64 *)buffer = hfi1_sps_ints(); 1387 else 1388 *(u64 *)buffer = stats[*spos]; 1389 seq_commit(s, sizeof(u64)); 1390 return 0; 1391} 1392 1393DEBUGFS_SEQ_FILE_OPS(driver_stats); 1394DEBUGFS_SEQ_FILE_OPEN(driver_stats) 1395DEBUGFS_FILE_OPS(driver_stats); 1396 1397void hfi1_dbg_init(void) 1398{ 1399 hfi1_dbg_root = debugfs_create_dir(DRIVER_NAME, NULL); 1400 debugfs_create_file("driver_stats_names", 0444, hfi1_dbg_root, NULL, 1401 &_driver_stats_names_file_ops); 1402 debugfs_create_file("driver_stats", 0444, hfi1_dbg_root, NULL, 1403 &_driver_stats_file_ops); 1404} 1405 1406void hfi1_dbg_exit(void) 1407{ 1408 debugfs_remove_recursive(hfi1_dbg_root); 1409 hfi1_dbg_root = NULL; 1410} 1411