drivers/infiniband/hw/hfi1/debugfs.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
hfi1_seq_read
hfi1_seq_lseek
_opcode_stats_seq_start
_opcode_stats_seq_next
_opcode_stats_seq_stop
opcode_stats_show
_opcode_stats_seq_show
DEBUGFS_SEQ_FILE_OPEN
_tx_opcode_stats_seq_next
_tx_opcode_stats_seq_stop
_tx_opcode_stats_seq_show
DEBUGFS_SEQ_FILE_OPEN
_ctx_stats_seq_next
_ctx_stats_seq_stop
_ctx_stats_seq_show
DEBUGFS_SEQ_FILE_OPEN
_qp_stats_seq_next
_qp_stats_seq_stop
_qp_stats_seq_show
DEBUGFS_SEQ_FILE_OPEN
_sdes_seq_next
_sdes_seq_stop
_sdes_seq_show
DEBUGFS_SEQ_FILE_OPEN
_rcds_seq_next
_rcds_seq_stop
_rcds_seq_show
DEBUGFS_SEQ_FILE_OPEN
_pios_seq_next
_pios_seq_stop
_pios_seq_show
DEBUGFS_SEQ_FILE_OPEN
dev_names_read
portnames_read
portcntrs_debugfs_read
check_dyn_flag
asic_flags_read
asic_flags_write
dc8051_memory_read
debugfs_lcb_read
debugfs_lcb_write
qsfp_debugfs_dump
__i2c_debugfs_write
i2c1_debugfs_write
i2c2_debugfs_write
__i2c_debugfs_read
i2c1_debugfs_read
i2c2_debugfs_read
__qsfp_debugfs_write
qsfp1_debugfs_write
qsfp2_debugfs_write
__qsfp_debugfs_read
qsfp1_debugfs_read
qsfp2_debugfs_read
__i2c_debugfs_open
i2c1_debugfs_open
i2c2_debugfs_open
__i2c_debugfs_release
i2c1_debugfs_release
i2c2_debugfs_release
__qsfp_debugfs_open
qsfp1_debugfs_open
qsfp2_debugfs_open
__qsfp_debugfs_release
qsfp1_debugfs_release
qsfp2_debugfs_release
exprom_wp_set
exprom_wp_debugfs_read
exprom_wp_debugfs_write
exprom_wp_debugfs_open
exprom_wp_debugfs_release
_sdma_cpu_list_seq_start
_sdma_cpu_list_seq_next
_sdma_cpu_list_seq_stop
_sdma_cpu_list_seq_show
DEBUGFS_SEQ_FILE_OPEN
hfi1_dbg_ibdev_exit
_driver_stats_names_seq_start
_driver_stats_names_seq_next
_driver_stats_names_seq_stop
_driver_stats_names_seq_show
DEBUGFS_SEQ_FILE_OPEN
_driver_stats_seq_next
_driver_stats_seq_stop
hfi1_sps_ints
_driver_stats_seq_show
DEBUGFS_SEQ_FILE_OPEN
hfi1_dbg_exit
   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 
  65 static struct dentry *hfi1_dbg_root;
  66 
  67 /* wrappers to enforce srcu in seq file */
  68 ssize_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 
  82 loff_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 
  98 static 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 
 107 static 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 
 117 static void _opcode_stats_seq_stop(struct seq_file *s, void *v)
 118 {
 119 }
 120 
 121 static 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 
 132 static 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 
 152 DEBUGFS_SEQ_FILE_OPS(opcode_stats);
 153 DEBUGFS_SEQ_FILE_OPEN(opcode_stats)
 154 DEBUGFS_FILE_OPS(opcode_stats);
 155 
 156 static void *_tx_opcode_stats_seq_start(struct seq_file *s, loff_t *pos)
 157 {
 158         return _opcode_stats_seq_start(s, pos);
 159 }
 160 
 161 static 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 
 166 static void _tx_opcode_stats_seq_stop(struct seq_file *s, void *v)
 167 {
 168 }
 169 
 170 static 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 
 188 DEBUGFS_SEQ_FILE_OPS(tx_opcode_stats);
 189 DEBUGFS_SEQ_FILE_OPEN(tx_opcode_stats)
 190 DEBUGFS_FILE_OPS(tx_opcode_stats);
 191 
 192 static 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 
 204 static 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 
 218 static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
 219 {
 220         /* nothing allocated */
 221 }
 222 
 223 static 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 
 256 DEBUGFS_SEQ_FILE_OPS(ctx_stats);
 257 DEBUGFS_SEQ_FILE_OPEN(ctx_stats)
 258 DEBUGFS_FILE_OPS(ctx_stats);
 259 
 260 static 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 
 284 static 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 
 300 static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr)
 301         __releases(RCU)
 302 {
 303         rcu_read_unlock();
 304 }
 305 
 306 static 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 
 318 DEBUGFS_SEQ_FILE_OPS(qp_stats);
 319 DEBUGFS_SEQ_FILE_OPEN(qp_stats)
 320 DEBUGFS_FILE_OPS(qp_stats);
 321 
 322 static 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 
 334 static 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 
 345 static void _sdes_seq_stop(struct seq_file *s, void *v)
 346 {
 347 }
 348 
 349 static 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 
 360 DEBUGFS_SEQ_FILE_OPS(sdes);
 361 DEBUGFS_SEQ_FILE_OPEN(sdes)
 362 DEBUGFS_FILE_OPS(sdes);
 363 
 364 static 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 
 376 static 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->n_krcv_queues)
 383                 return NULL;
 384         return pos;
 385 }
 386 
 387 static void _rcds_seq_stop(struct seq_file *s, void *v)
 388 {
 389 }
 390 
 391 static 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 
 406 DEBUGFS_SEQ_FILE_OPS(rcds);
 407 DEBUGFS_SEQ_FILE_OPEN(rcds)
 408 DEBUGFS_FILE_OPS(rcds);
 409 
 410 static 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 
 422 static 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 
 433 static void _pios_seq_stop(struct seq_file *s, void *v)
 434 {
 435 }
 436 
 437 static 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 
 454 DEBUGFS_SEQ_FILE_OPS(pios);
 455 DEBUGFS_SEQ_FILE_OPEN(pios)
 456 DEBUGFS_FILE_OPS(pios);
 457 
 458 /* read the per-device counters */
 459 static 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 */
 474 static 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 
 488 struct 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) */
 499 static 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 */
 514 static 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 
 528 static 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 
 542 static 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 
 591 static 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 */
 637 static 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);
 672 done:
 673         kfree(tmp);
 674         return rval;
 675 }
 676 
 677 static 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 
 711 static 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  */
 747 static 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. */
 767 static 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. */
 807 static 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. */
 814 static 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. */
 821 static 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. */
 867 static 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. */
 874 static 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. */
 881 static 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. */
 914 static 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. */
 921 static 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. */
 928 static 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. */
 972 static 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. */
 979 static 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 
 985 static int __i2c_debugfs_open(struct inode *in, struct file *fp, u32 target)
 986 {
 987         struct hfi1_pportdata *ppd;
 988         int ret;
 989 
 990         ppd = private2ppd(fp);
 991 
 992         ret = acquire_chip_resource(ppd->dd, i2c_target(target), 0);
 993         if (ret) /* failed - release the module */
 994                 module_put(THIS_MODULE);
 995 
 996         return ret;
 997 }
 998 
 999 static int i2c1_debugfs_open(struct inode *in, struct file *fp)
1000 {
1001         return __i2c_debugfs_open(in, fp, 0);
1002 }
1003 
1004 static int i2c2_debugfs_open(struct inode *in, struct file *fp)
1005 {
1006         return __i2c_debugfs_open(in, fp, 1);
1007 }
1008 
1009 static int __i2c_debugfs_release(struct inode *in, struct file *fp, u32 target)
1010 {
1011         struct hfi1_pportdata *ppd;
1012 
1013         ppd = private2ppd(fp);
1014 
1015         release_chip_resource(ppd->dd, i2c_target(target));
1016         module_put(THIS_MODULE);
1017 
1018         return 0;
1019 }
1020 
1021 static int i2c1_debugfs_release(struct inode *in, struct file *fp)
1022 {
1023         return __i2c_debugfs_release(in, fp, 0);
1024 }
1025 
1026 static int i2c2_debugfs_release(struct inode *in, struct file *fp)
1027 {
1028         return __i2c_debugfs_release(in, fp, 1);
1029 }
1030 
1031 static int __qsfp_debugfs_open(struct inode *in, struct file *fp, u32 target)
1032 {
1033         struct hfi1_pportdata *ppd;
1034         int ret;
1035 
1036         if (!try_module_get(THIS_MODULE))
1037                 return -ENODEV;
1038 
1039         ppd = private2ppd(fp);
1040 
1041         ret = acquire_chip_resource(ppd->dd, i2c_target(target), 0);
1042         if (ret) /* failed - release the module */
1043                 module_put(THIS_MODULE);
1044 
1045         return ret;
1046 }
1047 
1048 static int qsfp1_debugfs_open(struct inode *in, struct file *fp)
1049 {
1050         return __qsfp_debugfs_open(in, fp, 0);
1051 }
1052 
1053 static int qsfp2_debugfs_open(struct inode *in, struct file *fp)
1054 {
1055         return __qsfp_debugfs_open(in, fp, 1);
1056 }
1057 
1058 static int __qsfp_debugfs_release(struct inode *in, struct file *fp, u32 target)
1059 {
1060         struct hfi1_pportdata *ppd;
1061 
1062         ppd = private2ppd(fp);
1063 
1064         release_chip_resource(ppd->dd, i2c_target(target));
1065         module_put(THIS_MODULE);
1066 
1067         return 0;
1068 }
1069 
1070 static int qsfp1_debugfs_release(struct inode *in, struct file *fp)
1071 {
1072         return __qsfp_debugfs_release(in, fp, 0);
1073 }
1074 
1075 static int qsfp2_debugfs_release(struct inode *in, struct file *fp)
1076 {
1077         return __qsfp_debugfs_release(in, fp, 1);
1078 }
1079 
1080 #define EXPROM_WRITE_ENABLE BIT_ULL(14)
1081 
1082 static bool exprom_wp_disabled;
1083 
1084 static int exprom_wp_set(struct hfi1_devdata *dd, bool disable)
1085 {
1086         u64 gpio_val = 0;
1087 
1088         if (disable) {
1089                 gpio_val = EXPROM_WRITE_ENABLE;
1090                 exprom_wp_disabled = true;
1091                 dd_dev_info(dd, "Disable Expansion ROM Write Protection\n");
1092         } else {
1093                 exprom_wp_disabled = false;
1094                 dd_dev_info(dd, "Enable Expansion ROM Write Protection\n");
1095         }
1096 
1097         write_csr(dd, ASIC_GPIO_OUT, gpio_val);
1098         write_csr(dd, ASIC_GPIO_OE, gpio_val);
1099 
1100         return 0;
1101 }
1102 
1103 static ssize_t exprom_wp_debugfs_read(struct file *file, char __user *buf,
1104                                       size_t count, loff_t *ppos)
1105 {
1106         return 0;
1107 }
1108 
1109 static ssize_t exprom_wp_debugfs_write(struct file *file,
1110                                        const char __user *buf, size_t count,
1111                                        loff_t *ppos)
1112 {
1113         struct hfi1_pportdata *ppd = private2ppd(file);
1114         char cdata;
1115 
1116         if (count != 1)
1117                 return -EINVAL;
1118         if (get_user(cdata, buf))
1119                 return -EFAULT;
1120         if (cdata == '0')
1121                 exprom_wp_set(ppd->dd, false);
1122         else if (cdata == '1')
1123                 exprom_wp_set(ppd->dd, true);
1124         else
1125                 return -EINVAL;
1126 
1127         return 1;
1128 }
1129 
1130 static unsigned long exprom_in_use;
1131 
1132 static int exprom_wp_debugfs_open(struct inode *in, struct file *fp)
1133 {
1134         if (test_and_set_bit(0, &exprom_in_use))
1135                 return -EBUSY;
1136 
1137         return 0;
1138 }
1139 
1140 static int exprom_wp_debugfs_release(struct inode *in, struct file *fp)
1141 {
1142         struct hfi1_pportdata *ppd = private2ppd(fp);
1143 
1144         if (exprom_wp_disabled)
1145                 exprom_wp_set(ppd->dd, false);
1146         clear_bit(0, &exprom_in_use);
1147 
1148         return 0;
1149 }
1150 
1151 #define DEBUGFS_OPS(nm, readroutine, writeroutine)      \
1152 { \
1153         .name = nm, \
1154         .ops = { \
1155                 .owner = THIS_MODULE, \
1156                 .read = readroutine, \
1157                 .write = writeroutine, \
1158                 .llseek = generic_file_llseek, \
1159         }, \
1160 }
1161 
1162 #define DEBUGFS_XOPS(nm, readf, writef, openf, releasef) \
1163 { \
1164         .name = nm, \
1165         .ops = { \
1166                 .owner = THIS_MODULE, \
1167                 .read = readf, \
1168                 .write = writef, \
1169                 .llseek = generic_file_llseek, \
1170                 .open = openf, \
1171                 .release = releasef \
1172         }, \
1173 }
1174 
1175 static const struct counter_info cntr_ops[] = {
1176         DEBUGFS_OPS("counter_names", dev_names_read, NULL),
1177         DEBUGFS_OPS("counters", dev_counters_read, NULL),
1178         DEBUGFS_OPS("portcounter_names", portnames_read, NULL),
1179 };
1180 
1181 static const struct counter_info port_cntr_ops[] = {
1182         DEBUGFS_OPS("port%dcounters", portcntrs_debugfs_read, NULL),
1183         DEBUGFS_XOPS("i2c1", i2c1_debugfs_read, i2c1_debugfs_write,
1184                      i2c1_debugfs_open, i2c1_debugfs_release),
1185         DEBUGFS_XOPS("i2c2", i2c2_debugfs_read, i2c2_debugfs_write,
1186                      i2c2_debugfs_open, i2c2_debugfs_release),
1187         DEBUGFS_OPS("qsfp_dump%d", qsfp_debugfs_dump, NULL),
1188         DEBUGFS_XOPS("qsfp1", qsfp1_debugfs_read, qsfp1_debugfs_write,
1189                      qsfp1_debugfs_open, qsfp1_debugfs_release),
1190         DEBUGFS_XOPS("qsfp2", qsfp2_debugfs_read, qsfp2_debugfs_write,
1191                      qsfp2_debugfs_open, qsfp2_debugfs_release),
1192         DEBUGFS_XOPS("exprom_wp", exprom_wp_debugfs_read,
1193                      exprom_wp_debugfs_write, exprom_wp_debugfs_open,
1194                      exprom_wp_debugfs_release),
1195         DEBUGFS_OPS("asic_flags", asic_flags_read, asic_flags_write),
1196         DEBUGFS_OPS("dc8051_memory", dc8051_memory_read, NULL),
1197         DEBUGFS_OPS("lcb", debugfs_lcb_read, debugfs_lcb_write),
1198 };
1199 
1200 static void *_sdma_cpu_list_seq_start(struct seq_file *s, loff_t *pos)
1201 {
1202         if (*pos >= num_online_cpus())
1203                 return NULL;
1204 
1205         return pos;
1206 }
1207 
1208 static void *_sdma_cpu_list_seq_next(struct seq_file *s, void *v, loff_t *pos)
1209 {
1210         ++*pos;
1211         if (*pos >= num_online_cpus())
1212                 return NULL;
1213 
1214         return pos;
1215 }
1216 
1217 static void _sdma_cpu_list_seq_stop(struct seq_file *s, void *v)
1218 {
1219         /* nothing allocated */
1220 }
1221 
1222 static int _sdma_cpu_list_seq_show(struct seq_file *s, void *v)
1223 {
1224         struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private;
1225         struct hfi1_devdata *dd = dd_from_dev(ibd);
1226         loff_t *spos = v;
1227         loff_t i = *spos;
1228 
1229         sdma_seqfile_dump_cpu_list(s, dd, (unsigned long)i);
1230         return 0;
1231 }
1232 
1233 DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list);
1234 DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list)
1235 DEBUGFS_FILE_OPS(sdma_cpu_list);
1236 
1237 void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
1238 {
1239         char name[sizeof("port0counters") + 1];
1240         char link[10];
1241         struct hfi1_devdata *dd = dd_from_dev(ibd);
1242         struct hfi1_pportdata *ppd;
1243         struct dentry *root;
1244         int unit = dd->unit;
1245         int i, j;
1246 
1247         if (!hfi1_dbg_root)
1248                 return;
1249         snprintf(name, sizeof(name), "%s_%d", class_name(), unit);
1250         snprintf(link, sizeof(link), "%d", unit);
1251         root = debugfs_create_dir(name, hfi1_dbg_root);
1252         ibd->hfi1_ibdev_dbg = root;
1253 
1254         ibd->hfi1_ibdev_link =
1255                 debugfs_create_symlink(link, hfi1_dbg_root, name);
1256 
1257         debugfs_create_file("opcode_stats", 0444, root, ibd,
1258                             &_opcode_stats_file_ops);
1259         debugfs_create_file("tx_opcode_stats", 0444, root, ibd,
1260                             &_tx_opcode_stats_file_ops);
1261         debugfs_create_file("ctx_stats", 0444, root, ibd, &_ctx_stats_file_ops);
1262         debugfs_create_file("qp_stats", 0444, root, ibd, &_qp_stats_file_ops);
1263         debugfs_create_file("sdes", 0444, root, ibd, &_sdes_file_ops);
1264         debugfs_create_file("rcds", 0444, root, ibd, &_rcds_file_ops);
1265         debugfs_create_file("pios", 0444, root, ibd, &_pios_file_ops);
1266         debugfs_create_file("sdma_cpu_list", 0444, root, ibd,
1267                             &_sdma_cpu_list_file_ops);
1268 
1269         /* dev counter files */
1270         for (i = 0; i < ARRAY_SIZE(cntr_ops); i++)
1271                 debugfs_create_file(cntr_ops[i].name, 0444, root, dd,
1272                                     &cntr_ops[i].ops);
1273 
1274         /* per port files */
1275         for (ppd = dd->pport, j = 0; j < dd->num_pports; j++, ppd++)
1276                 for (i = 0; i < ARRAY_SIZE(port_cntr_ops); i++) {
1277                         snprintf(name,
1278                                  sizeof(name),
1279                                  port_cntr_ops[i].name,
1280                                  j + 1);
1281                         debugfs_create_file(name,
1282                                             !port_cntr_ops[i].ops.write ?
1283                                                     S_IRUGO :
1284                                                     S_IRUGO | S_IWUSR,
1285                                             root, ppd, &port_cntr_ops[i].ops);
1286                 }
1287 
1288         hfi1_fault_init_debugfs(ibd);
1289 }
1290 
1291 void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
1292 {
1293         if (!hfi1_dbg_root)
1294                 goto out;
1295         hfi1_fault_exit_debugfs(ibd);
1296         debugfs_remove(ibd->hfi1_ibdev_link);
1297         debugfs_remove_recursive(ibd->hfi1_ibdev_dbg);
1298 out:
1299         ibd->hfi1_ibdev_dbg = NULL;
1300 }
1301 
1302 /*
1303  * driver stats field names, one line per stat, single string.  Used by
1304  * programs like hfistats to print the stats in a way which works for
1305  * different versions of drivers, without changing program source.
1306  * if hfi1_ib_stats changes, this needs to change.  Names need to be
1307  * 12 chars or less (w/o newline), for proper display by hfistats utility.
1308  */
1309 static const char * const hfi1_statnames[] = {
1310         /* must be element 0*/
1311         "KernIntr",
1312         "ErrorIntr",
1313         "Tx_Errs",
1314         "Rcv_Errs",
1315         "H/W_Errs",
1316         "NoPIOBufs",
1317         "CtxtsOpen",
1318         "RcvLen_Errs",
1319         "EgrBufFull",
1320         "EgrHdrFull"
1321 };
1322 
1323 static void *_driver_stats_names_seq_start(struct seq_file *s, loff_t *pos)
1324 {
1325         if (*pos >= ARRAY_SIZE(hfi1_statnames))
1326                 return NULL;
1327         return pos;
1328 }
1329 
1330 static void *_driver_stats_names_seq_next(
1331         struct seq_file *s,
1332         void *v,
1333         loff_t *pos)
1334 {
1335         ++*pos;
1336         if (*pos >= ARRAY_SIZE(hfi1_statnames))
1337                 return NULL;
1338         return pos;
1339 }
1340 
1341 static void _driver_stats_names_seq_stop(struct seq_file *s, void *v)
1342 {
1343 }
1344 
1345 static int _driver_stats_names_seq_show(struct seq_file *s, void *v)
1346 {
1347         loff_t *spos = v;
1348 
1349         seq_printf(s, "%s\n", hfi1_statnames[*spos]);
1350         return 0;
1351 }
1352 
1353 DEBUGFS_SEQ_FILE_OPS(driver_stats_names);
1354 DEBUGFS_SEQ_FILE_OPEN(driver_stats_names)
1355 DEBUGFS_FILE_OPS(driver_stats_names);
1356 
1357 static void *_driver_stats_seq_start(struct seq_file *s, loff_t *pos)
1358 {
1359         if (*pos >= ARRAY_SIZE(hfi1_statnames))
1360                 return NULL;
1361         return pos;
1362 }
1363 
1364 static void *_driver_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
1365 {
1366         ++*pos;
1367         if (*pos >= ARRAY_SIZE(hfi1_statnames))
1368                 return NULL;
1369         return pos;
1370 }
1371 
1372 static void _driver_stats_seq_stop(struct seq_file *s, void *v)
1373 {
1374 }
1375 
1376 static u64 hfi1_sps_ints(void)
1377 {
1378         unsigned long index, flags;
1379         struct hfi1_devdata *dd;
1380         u64 sps_ints = 0;
1381 
1382         xa_lock_irqsave(&hfi1_dev_table, flags);
1383         xa_for_each(&hfi1_dev_table, index, dd) {
1384                 sps_ints += get_all_cpu_total(dd->int_counter);
1385         }
1386         xa_unlock_irqrestore(&hfi1_dev_table, flags);
1387         return sps_ints;
1388 }
1389 
1390 static int _driver_stats_seq_show(struct seq_file *s, void *v)
1391 {
1392         loff_t *spos = v;
1393         char *buffer;
1394         u64 *stats = (u64 *)&hfi1_stats;
1395         size_t sz = seq_get_buf(s, &buffer);
1396 
1397         if (sz < sizeof(u64))
1398                 return SEQ_SKIP;
1399         /* special case for interrupts */
1400         if (*spos == 0)
1401                 *(u64 *)buffer = hfi1_sps_ints();
1402         else
1403                 *(u64 *)buffer = stats[*spos];
1404         seq_commit(s,  sizeof(u64));
1405         return 0;
1406 }
1407 
1408 DEBUGFS_SEQ_FILE_OPS(driver_stats);
1409 DEBUGFS_SEQ_FILE_OPEN(driver_stats)
1410 DEBUGFS_FILE_OPS(driver_stats);
1411 
1412 void hfi1_dbg_init(void)
1413 {
1414         hfi1_dbg_root  = debugfs_create_dir(DRIVER_NAME, NULL);
1415         debugfs_create_file("driver_stats_names", 0444, hfi1_dbg_root, NULL,
1416                             &_driver_stats_names_file_ops);
1417         debugfs_create_file("driver_stats", 0444, hfi1_dbg_root, NULL,
1418                             &_driver_stats_file_ops);
1419 }
1420 
1421 void hfi1_dbg_exit(void)
1422 {
1423         debugfs_remove_recursive(hfi1_dbg_root);
1424         hfi1_dbg_root = NULL;
1425 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/infiniband/hw/hfi1/debugfs.c

DEFINITIONS
