linux/drivers/scsi/lpfc/lpfc_debugfs.c
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   1/*******************************************************************
   2 * This file is part of the Emulex Linux Device Driver for         *
   3 * Fibre Channel Host Bus Adapters.                                *
   4 * Copyright (C) 2007-2015 Emulex.  All rights reserved.           *
   5 * EMULEX and SLI are trademarks of Emulex.                        *
   6 * www.emulex.com                                                  *
   7 *                                                                 *
   8 * This program is free software; you can redistribute it and/or   *
   9 * modify it under the terms of version 2 of the GNU General       *
  10 * Public License as published by the Free Software Foundation.    *
  11 * This program is distributed in the hope that it will be useful. *
  12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  16 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  17 * more details, a copy of which can be found in the file COPYING  *
  18 * included with this package.                                     *
  19 *******************************************************************/
  20
  21#include <linux/blkdev.h>
  22#include <linux/delay.h>
  23#include <linux/module.h>
  24#include <linux/dma-mapping.h>
  25#include <linux/idr.h>
  26#include <linux/interrupt.h>
  27#include <linux/kthread.h>
  28#include <linux/slab.h>
  29#include <linux/pci.h>
  30#include <linux/spinlock.h>
  31#include <linux/ctype.h>
  32
  33#include <scsi/scsi.h>
  34#include <scsi/scsi_device.h>
  35#include <scsi/scsi_host.h>
  36#include <scsi/scsi_transport_fc.h>
  37
  38#include "lpfc_hw4.h"
  39#include "lpfc_hw.h"
  40#include "lpfc_sli.h"
  41#include "lpfc_sli4.h"
  42#include "lpfc_nl.h"
  43#include "lpfc_disc.h"
  44#include "lpfc_scsi.h"
  45#include "lpfc.h"
  46#include "lpfc_logmsg.h"
  47#include "lpfc_crtn.h"
  48#include "lpfc_vport.h"
  49#include "lpfc_version.h"
  50#include "lpfc_compat.h"
  51#include "lpfc_debugfs.h"
  52#include "lpfc_bsg.h"
  53
  54#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
  55/*
  56 * debugfs interface
  57 *
  58 * To access this interface the user should:
  59 * # mount -t debugfs none /sys/kernel/debug
  60 *
  61 * The lpfc debugfs directory hierarchy is:
  62 * /sys/kernel/debug/lpfc/fnX/vportY
  63 * where X is the lpfc hba function unique_id
  64 * where Y is the vport VPI on that hba
  65 *
  66 * Debugging services available per vport:
  67 * discovery_trace
  68 * This is an ACSII readable file that contains a trace of the last
  69 * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
  70 * See lpfc_debugfs.h for different categories of  discovery events.
  71 * To enable the discovery trace, the following module parameters must be set:
  72 * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
  73 * lpfc_debugfs_max_disc_trc=X   Where X is the event trace depth for
  74 *                               EACH vport. X MUST also be a power of 2.
  75 * lpfc_debugfs_mask_disc_trc=Y  Where Y is an event mask as defined in
  76 *                               lpfc_debugfs.h .
  77 *
  78 * slow_ring_trace
  79 * This is an ACSII readable file that contains a trace of the last
  80 * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA.
  81 * To enable the slow ring trace, the following module parameters must be set:
  82 * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
  83 * lpfc_debugfs_max_slow_ring_trc=X   Where X is the event trace depth for
  84 *                               the HBA. X MUST also be a power of 2.
  85 */
  86static int lpfc_debugfs_enable = 1;
  87module_param(lpfc_debugfs_enable, int, S_IRUGO);
  88MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");
  89
  90/* This MUST be a power of 2 */
  91static int lpfc_debugfs_max_disc_trc;
  92module_param(lpfc_debugfs_max_disc_trc, int, S_IRUGO);
  93MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
  94        "Set debugfs discovery trace depth");
  95
  96/* This MUST be a power of 2 */
  97static int lpfc_debugfs_max_slow_ring_trc;
  98module_param(lpfc_debugfs_max_slow_ring_trc, int, S_IRUGO);
  99MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
 100        "Set debugfs slow ring trace depth");
 101
 102static int lpfc_debugfs_mask_disc_trc;
 103module_param(lpfc_debugfs_mask_disc_trc, int, S_IRUGO);
 104MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
 105        "Set debugfs discovery trace mask");
 106
 107#include <linux/debugfs.h>
 108
 109static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
 110static unsigned long lpfc_debugfs_start_time = 0L;
 111
 112/* iDiag */
 113static struct lpfc_idiag idiag;
 114
 115/**
 116 * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer
 117 * @vport: The vport to gather the log info from.
 118 * @buf: The buffer to dump log into.
 119 * @size: The maximum amount of data to process.
 120 *
 121 * Description:
 122 * This routine gathers the lpfc discovery debugfs data from the @vport and
 123 * dumps it to @buf up to @size number of bytes. It will start at the next entry
 124 * in the log and process the log until the end of the buffer. Then it will
 125 * gather from the beginning of the log and process until the current entry.
 126 *
 127 * Notes:
 128 * Discovery logging will be disabled while while this routine dumps the log.
 129 *
 130 * Return Value:
 131 * This routine returns the amount of bytes that were dumped into @buf and will
 132 * not exceed @size.
 133 **/
 134static int
 135lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
 136{
 137        int i, index, len, enable;
 138        uint32_t ms;
 139        struct lpfc_debugfs_trc *dtp;
 140        char *buffer;
 141
 142        buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
 143        if (!buffer)
 144                return 0;
 145
 146        enable = lpfc_debugfs_enable;
 147        lpfc_debugfs_enable = 0;
 148
 149        len = 0;
 150        index = (atomic_read(&vport->disc_trc_cnt) + 1) &
 151                (lpfc_debugfs_max_disc_trc - 1);
 152        for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
 153                dtp = vport->disc_trc + i;
 154                if (!dtp->fmt)
 155                        continue;
 156                ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 157                snprintf(buffer,
 158                        LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 159                        dtp->seq_cnt, ms, dtp->fmt);
 160                len +=  snprintf(buf+len, size-len, buffer,
 161                        dtp->data1, dtp->data2, dtp->data3);
 162        }
 163        for (i = 0; i < index; i++) {
 164                dtp = vport->disc_trc + i;
 165                if (!dtp->fmt)
 166                        continue;
 167                ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 168                snprintf(buffer,
 169                        LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 170                        dtp->seq_cnt, ms, dtp->fmt);
 171                len +=  snprintf(buf+len, size-len, buffer,
 172                        dtp->data1, dtp->data2, dtp->data3);
 173        }
 174
 175        lpfc_debugfs_enable = enable;
 176        kfree(buffer);
 177
 178        return len;
 179}
 180
 181/**
 182 * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer
 183 * @phba: The HBA to gather the log info from.
 184 * @buf: The buffer to dump log into.
 185 * @size: The maximum amount of data to process.
 186 *
 187 * Description:
 188 * This routine gathers the lpfc slow ring debugfs data from the @phba and
 189 * dumps it to @buf up to @size number of bytes. It will start at the next entry
 190 * in the log and process the log until the end of the buffer. Then it will
 191 * gather from the beginning of the log and process until the current entry.
 192 *
 193 * Notes:
 194 * Slow ring logging will be disabled while while this routine dumps the log.
 195 *
 196 * Return Value:
 197 * This routine returns the amount of bytes that were dumped into @buf and will
 198 * not exceed @size.
 199 **/
 200static int
 201lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
 202{
 203        int i, index, len, enable;
 204        uint32_t ms;
 205        struct lpfc_debugfs_trc *dtp;
 206        char *buffer;
 207
 208        buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
 209        if (!buffer)
 210                return 0;
 211
 212        enable = lpfc_debugfs_enable;
 213        lpfc_debugfs_enable = 0;
 214
 215        len = 0;
 216        index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
 217                (lpfc_debugfs_max_slow_ring_trc - 1);
 218        for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
 219                dtp = phba->slow_ring_trc + i;
 220                if (!dtp->fmt)
 221                        continue;
 222                ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 223                snprintf(buffer,
 224                        LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 225                        dtp->seq_cnt, ms, dtp->fmt);
 226                len +=  snprintf(buf+len, size-len, buffer,
 227                        dtp->data1, dtp->data2, dtp->data3);
 228        }
 229        for (i = 0; i < index; i++) {
 230                dtp = phba->slow_ring_trc + i;
 231                if (!dtp->fmt)
 232                        continue;
 233                ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
 234                snprintf(buffer,
 235                        LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
 236                        dtp->seq_cnt, ms, dtp->fmt);
 237                len +=  snprintf(buf+len, size-len, buffer,
 238                        dtp->data1, dtp->data2, dtp->data3);
 239        }
 240
 241        lpfc_debugfs_enable = enable;
 242        kfree(buffer);
 243
 244        return len;
 245}
 246
 247static int lpfc_debugfs_last_hbq = -1;
 248
 249/**
 250 * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer
 251 * @phba: The HBA to gather host buffer info from.
 252 * @buf: The buffer to dump log into.
 253 * @size: The maximum amount of data to process.
 254 *
 255 * Description:
 256 * This routine dumps the host buffer queue info from the @phba to @buf up to
 257 * @size number of bytes. A header that describes the current hbq state will be
 258 * dumped to @buf first and then info on each hbq entry will be dumped to @buf
 259 * until @size bytes have been dumped or all the hbq info has been dumped.
 260 *
 261 * Notes:
 262 * This routine will rotate through each configured HBQ each time called.
 263 *
 264 * Return Value:
 265 * This routine returns the amount of bytes that were dumped into @buf and will
 266 * not exceed @size.
 267 **/
 268static int
 269lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
 270{
 271        int len = 0;
 272        int i, j, found, posted, low;
 273        uint32_t phys, raw_index, getidx;
 274        struct lpfc_hbq_init *hip;
 275        struct hbq_s *hbqs;
 276        struct lpfc_hbq_entry *hbqe;
 277        struct lpfc_dmabuf *d_buf;
 278        struct hbq_dmabuf *hbq_buf;
 279
 280        if (phba->sli_rev != 3)
 281                return 0;
 282
 283        spin_lock_irq(&phba->hbalock);
 284
 285        /* toggle between multiple hbqs, if any */
 286        i = lpfc_sli_hbq_count();
 287        if (i > 1) {
 288                 lpfc_debugfs_last_hbq++;
 289                 if (lpfc_debugfs_last_hbq >= i)
 290                        lpfc_debugfs_last_hbq = 0;
 291        }
 292        else
 293                lpfc_debugfs_last_hbq = 0;
 294
 295        i = lpfc_debugfs_last_hbq;
 296
 297        len +=  snprintf(buf+len, size-len, "HBQ %d Info\n", i);
 298
 299        hbqs =  &phba->hbqs[i];
 300        posted = 0;
 301        list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
 302                posted++;
 303
 304        hip =  lpfc_hbq_defs[i];
 305        len +=  snprintf(buf+len, size-len,
 306                "idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
 307                hip->hbq_index, hip->profile, hip->rn,
 308                hip->buffer_count, hip->init_count, hip->add_count, posted);
 309
 310        raw_index = phba->hbq_get[i];
 311        getidx = le32_to_cpu(raw_index);
 312        len +=  snprintf(buf+len, size-len,
 313                "entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
 314                hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
 315                hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
 316
 317        hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
 318        for (j=0; j<hbqs->entry_count; j++) {
 319                len +=  snprintf(buf+len, size-len,
 320                        "%03d: %08x %04x %05x ", j,
 321                        le32_to_cpu(hbqe->bde.addrLow),
 322                        le32_to_cpu(hbqe->bde.tus.w),
 323                        le32_to_cpu(hbqe->buffer_tag));
 324                i = 0;
 325                found = 0;
 326
 327                /* First calculate if slot has an associated posted buffer */
 328                low = hbqs->hbqPutIdx - posted;
 329                if (low >= 0) {
 330                        if ((j >= hbqs->hbqPutIdx) || (j < low)) {
 331                                len +=  snprintf(buf+len, size-len, "Unused\n");
 332                                goto skipit;
 333                        }
 334                }
 335                else {
 336                        if ((j >= hbqs->hbqPutIdx) &&
 337                                (j < (hbqs->entry_count+low))) {
 338                                len +=  snprintf(buf+len, size-len, "Unused\n");
 339                                goto skipit;
 340                        }
 341                }
 342
 343                /* Get the Buffer info for the posted buffer */
 344                list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
 345                        hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
 346                        phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
 347                        if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
 348                                len +=  snprintf(buf+len, size-len,
 349                                        "Buf%d: %p %06x\n", i,
 350                                        hbq_buf->dbuf.virt, hbq_buf->tag);
 351                                found = 1;
 352                                break;
 353                        }
 354                        i++;
 355                }
 356                if (!found) {
 357                        len +=  snprintf(buf+len, size-len, "No DMAinfo?\n");
 358                }
 359skipit:
 360                hbqe++;
 361                if (len > LPFC_HBQINFO_SIZE - 54)
 362                        break;
 363        }
 364        spin_unlock_irq(&phba->hbalock);
 365        return len;
 366}
 367
 368static int lpfc_debugfs_last_hba_slim_off;
 369
 370/**
 371 * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer
 372 * @phba: The HBA to gather SLIM info from.
 373 * @buf: The buffer to dump log into.
 374 * @size: The maximum amount of data to process.
 375 *
 376 * Description:
 377 * This routine dumps the current contents of HBA SLIM for the HBA associated
 378 * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data.
 379 *
 380 * Notes:
 381 * This routine will only dump up to 1024 bytes of data each time called and
 382 * should be called multiple times to dump the entire HBA SLIM.
 383 *
 384 * Return Value:
 385 * This routine returns the amount of bytes that were dumped into @buf and will
 386 * not exceed @size.
 387 **/
 388static int
 389lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
 390{
 391        int len = 0;
 392        int i, off;
 393        uint32_t *ptr;
 394        char *buffer;
 395
 396        buffer = kmalloc(1024, GFP_KERNEL);
 397        if (!buffer)
 398                return 0;
 399
 400        off = 0;
 401        spin_lock_irq(&phba->hbalock);
 402
 403        len +=  snprintf(buf+len, size-len, "HBA SLIM\n");
 404        lpfc_memcpy_from_slim(buffer,
 405                phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024);
 406
 407        ptr = (uint32_t *)&buffer[0];
 408        off = lpfc_debugfs_last_hba_slim_off;
 409
 410        /* Set it up for the next time */
 411        lpfc_debugfs_last_hba_slim_off += 1024;
 412        if (lpfc_debugfs_last_hba_slim_off >= 4096)
 413                lpfc_debugfs_last_hba_slim_off = 0;
 414
 415        i = 1024;
 416        while (i > 0) {
 417                len +=  snprintf(buf+len, size-len,
 418                "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 419                off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 420                *(ptr+5), *(ptr+6), *(ptr+7));
 421                ptr += 8;
 422                i -= (8 * sizeof(uint32_t));
 423                off += (8 * sizeof(uint32_t));
 424        }
 425
 426        spin_unlock_irq(&phba->hbalock);
 427        kfree(buffer);
 428
 429        return len;
 430}
 431
 432/**
 433 * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer
 434 * @phba: The HBA to gather Host SLIM info from.
 435 * @buf: The buffer to dump log into.
 436 * @size: The maximum amount of data to process.
 437 *
 438 * Description:
 439 * This routine dumps the current contents of host SLIM for the host associated
 440 * with @phba to @buf up to @size bytes of data. The dump will contain the
 441 * Mailbox, PCB, Rings, and Registers that are located in host memory.
 442 *
 443 * Return Value:
 444 * This routine returns the amount of bytes that were dumped into @buf and will
 445 * not exceed @size.
 446 **/
 447static int
 448lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
 449{
 450        int len = 0;
 451        int i, off;
 452        uint32_t word0, word1, word2, word3;
 453        uint32_t *ptr;
 454        struct lpfc_pgp *pgpp;
 455        struct lpfc_sli *psli = &phba->sli;
 456        struct lpfc_sli_ring *pring;
 457
 458        off = 0;
 459        spin_lock_irq(&phba->hbalock);
 460
 461        len +=  snprintf(buf+len, size-len, "SLIM Mailbox\n");
 462        ptr = (uint32_t *)phba->slim2p.virt;
 463        i = sizeof(MAILBOX_t);
 464        while (i > 0) {
 465                len +=  snprintf(buf+len, size-len,
 466                "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 467                off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 468                *(ptr+5), *(ptr+6), *(ptr+7));
 469                ptr += 8;
 470                i -= (8 * sizeof(uint32_t));
 471                off += (8 * sizeof(uint32_t));
 472        }
 473
 474        len +=  snprintf(buf+len, size-len, "SLIM PCB\n");
 475        ptr = (uint32_t *)phba->pcb;
 476        i = sizeof(PCB_t);
 477        while (i > 0) {
 478                len +=  snprintf(buf+len, size-len,
 479                "%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
 480                off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
 481                *(ptr+5), *(ptr+6), *(ptr+7));
 482                ptr += 8;
 483                i -= (8 * sizeof(uint32_t));
 484                off += (8 * sizeof(uint32_t));
 485        }
 486
 487        for (i = 0; i < 4; i++) {
 488                pgpp = &phba->port_gp[i];
 489                pring = &psli->ring[i];
 490                len +=  snprintf(buf+len, size-len,
 491                                 "Ring %d: CMD GetInx:%d (Max:%d Next:%d "
 492                                 "Local:%d flg:x%x)  RSP PutInx:%d Max:%d\n",
 493                                 i, pgpp->cmdGetInx, pring->sli.sli3.numCiocb,
 494                                 pring->sli.sli3.next_cmdidx,
 495                                 pring->sli.sli3.local_getidx,
 496                                 pring->flag, pgpp->rspPutInx,
 497                                 pring->sli.sli3.numRiocb);
 498        }
 499
 500        if (phba->sli_rev <= LPFC_SLI_REV3) {
 501                word0 = readl(phba->HAregaddr);
 502                word1 = readl(phba->CAregaddr);
 503                word2 = readl(phba->HSregaddr);
 504                word3 = readl(phba->HCregaddr);
 505                len +=  snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x "
 506                                 "HC:%08x\n", word0, word1, word2, word3);
 507        }
 508        spin_unlock_irq(&phba->hbalock);
 509        return len;
 510}
 511
 512/**
 513 * lpfc_debugfs_nodelist_data - Dump target node list to a buffer
 514 * @vport: The vport to gather target node info from.
 515 * @buf: The buffer to dump log into.
 516 * @size: The maximum amount of data to process.
 517 *
 518 * Description:
 519 * This routine dumps the current target node list associated with @vport to
 520 * @buf up to @size bytes of data. Each node entry in the dump will contain a
 521 * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields.
 522 *
 523 * Return Value:
 524 * This routine returns the amount of bytes that were dumped into @buf and will
 525 * not exceed @size.
 526 **/
 527static int
 528lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
 529{
 530        int len = 0;
 531        int cnt;
 532        struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 533        struct lpfc_nodelist *ndlp;
 534        unsigned char *statep, *name;
 535
 536        cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
 537
 538        spin_lock_irq(shost->host_lock);
 539        list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
 540                if (!cnt) {
 541                        len +=  snprintf(buf+len, size-len,
 542                                "Missing Nodelist Entries\n");
 543                        break;
 544                }
 545                cnt--;
 546                switch (ndlp->nlp_state) {
 547                case NLP_STE_UNUSED_NODE:
 548                        statep = "UNUSED";
 549                        break;
 550                case NLP_STE_PLOGI_ISSUE:
 551                        statep = "PLOGI ";
 552                        break;
 553                case NLP_STE_ADISC_ISSUE:
 554                        statep = "ADISC ";
 555                        break;
 556                case NLP_STE_REG_LOGIN_ISSUE:
 557                        statep = "REGLOG";
 558                        break;
 559                case NLP_STE_PRLI_ISSUE:
 560                        statep = "PRLI  ";
 561                        break;
 562                case NLP_STE_LOGO_ISSUE:
 563                        statep = "LOGO  ";
 564                        break;
 565                case NLP_STE_UNMAPPED_NODE:
 566                        statep = "UNMAP ";
 567                        break;
 568                case NLP_STE_MAPPED_NODE:
 569                        statep = "MAPPED";
 570                        break;
 571                case NLP_STE_NPR_NODE:
 572                        statep = "NPR   ";
 573                        break;
 574                default:
 575                        statep = "UNKNOWN";
 576                }
 577                len +=  snprintf(buf+len, size-len, "%s DID:x%06x ",
 578                        statep, ndlp->nlp_DID);
 579                name = (unsigned char *)&ndlp->nlp_portname;
 580                len +=  snprintf(buf+len, size-len,
 581                        "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
 582                        *name, *(name+1), *(name+2), *(name+3),
 583                        *(name+4), *(name+5), *(name+6), *(name+7));
 584                name = (unsigned char *)&ndlp->nlp_nodename;
 585                len +=  snprintf(buf+len, size-len,
 586                        "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
 587                        *name, *(name+1), *(name+2), *(name+3),
 588                        *(name+4), *(name+5), *(name+6), *(name+7));
 589                if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
 590                        len +=  snprintf(buf+len, size-len, "RPI:%03d ",
 591                                ndlp->nlp_rpi);
 592                else
 593                        len +=  snprintf(buf+len, size-len, "RPI:none ");
 594                len +=  snprintf(buf+len, size-len, "flag:x%08x ",
 595                        ndlp->nlp_flag);
 596                if (!ndlp->nlp_type)
 597                        len +=  snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
 598                if (ndlp->nlp_type & NLP_FC_NODE)
 599                        len +=  snprintf(buf+len, size-len, "FC_NODE ");
 600                if (ndlp->nlp_type & NLP_FABRIC)
 601                        len +=  snprintf(buf+len, size-len, "FABRIC ");
 602                if (ndlp->nlp_type & NLP_FCP_TARGET)
 603                        len +=  snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
 604                                ndlp->nlp_sid);
 605                if (ndlp->nlp_type & NLP_FCP_INITIATOR)
 606                        len +=  snprintf(buf+len, size-len, "FCP_INITIATOR ");
 607                len += snprintf(buf+len, size-len, "usgmap:%x ",
 608                        ndlp->nlp_usg_map);
 609                len += snprintf(buf+len, size-len, "refcnt:%x",
 610                        atomic_read(&ndlp->kref.refcount));
 611                len +=  snprintf(buf+len, size-len, "\n");
 612        }
 613        spin_unlock_irq(shost->host_lock);
 614        return len;
 615}
 616#endif
 617
 618/**
 619 * lpfc_debugfs_disc_trc - Store discovery trace log
 620 * @vport: The vport to associate this trace string with for retrieval.
 621 * @mask: Log entry classification.
 622 * @fmt: Format string to be displayed when dumping the log.
 623 * @data1: 1st data parameter to be applied to @fmt.
 624 * @data2: 2nd data parameter to be applied to @fmt.
 625 * @data3: 3rd data parameter to be applied to @fmt.
 626 *
 627 * Description:
 628 * This routine is used by the driver code to add a debugfs log entry to the
 629 * discovery trace buffer associated with @vport. Only entries with a @mask that
 630 * match the current debugfs discovery mask will be saved. Entries that do not
 631 * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like
 632 * printf when displaying the log.
 633 **/
 634inline void
 635lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
 636        uint32_t data1, uint32_t data2, uint32_t data3)
 637{
 638#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 639        struct lpfc_debugfs_trc *dtp;
 640        int index;
 641
 642        if (!(lpfc_debugfs_mask_disc_trc & mask))
 643                return;
 644
 645        if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
 646                !vport || !vport->disc_trc)
 647                return;
 648
 649        index = atomic_inc_return(&vport->disc_trc_cnt) &
 650                (lpfc_debugfs_max_disc_trc - 1);
 651        dtp = vport->disc_trc + index;
 652        dtp->fmt = fmt;
 653        dtp->data1 = data1;
 654        dtp->data2 = data2;
 655        dtp->data3 = data3;
 656        dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
 657        dtp->jif = jiffies;
 658#endif
 659        return;
 660}
 661
 662/**
 663 * lpfc_debugfs_slow_ring_trc - Store slow ring trace log
 664 * @phba: The phba to associate this trace string with for retrieval.
 665 * @fmt: Format string to be displayed when dumping the log.
 666 * @data1: 1st data parameter to be applied to @fmt.
 667 * @data2: 2nd data parameter to be applied to @fmt.
 668 * @data3: 3rd data parameter to be applied to @fmt.
 669 *
 670 * Description:
 671 * This routine is used by the driver code to add a debugfs log entry to the
 672 * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and
 673 * @data3 are used like printf when displaying the log.
 674 **/
 675inline void
 676lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
 677        uint32_t data1, uint32_t data2, uint32_t data3)
 678{
 679#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 680        struct lpfc_debugfs_trc *dtp;
 681        int index;
 682
 683        if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
 684                !phba || !phba->slow_ring_trc)
 685                return;
 686
 687        index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
 688                (lpfc_debugfs_max_slow_ring_trc - 1);
 689        dtp = phba->slow_ring_trc + index;
 690        dtp->fmt = fmt;
 691        dtp->data1 = data1;
 692        dtp->data2 = data2;
 693        dtp->data3 = data3;
 694        dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
 695        dtp->jif = jiffies;
 696#endif
 697        return;
 698}
 699
 700#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
 701/**
 702 * lpfc_debugfs_disc_trc_open - Open the discovery trace log
 703 * @inode: The inode pointer that contains a vport pointer.
 704 * @file: The file pointer to attach the log output.
 705 *
 706 * Description:
 707 * This routine is the entry point for the debugfs open file operation. It gets
 708 * the vport from the i_private field in @inode, allocates the necessary buffer
 709 * for the log, fills the buffer from the in-memory log for this vport, and then
 710 * returns a pointer to that log in the private_data field in @file.
 711 *
 712 * Returns:
 713 * This function returns zero if successful. On error it will return an negative
 714 * error value.
 715 **/
 716static int
 717lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
 718{
 719        struct lpfc_vport *vport = inode->i_private;
 720        struct lpfc_debug *debug;
 721        int size;
 722        int rc = -ENOMEM;
 723
 724        if (!lpfc_debugfs_max_disc_trc) {
 725                 rc = -ENOSPC;
 726                goto out;
 727        }
 728
 729        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 730        if (!debug)
 731                goto out;
 732
 733        /* Round to page boundary */
 734        size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
 735        size = PAGE_ALIGN(size);
 736
 737        debug->buffer = kmalloc(size, GFP_KERNEL);
 738        if (!debug->buffer) {
 739                kfree(debug);
 740                goto out;
 741        }
 742
 743        debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
 744        file->private_data = debug;
 745
 746        rc = 0;
 747out:
 748        return rc;
 749}
 750
 751/**
 752 * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log
 753 * @inode: The inode pointer that contains a vport pointer.
 754 * @file: The file pointer to attach the log output.
 755 *
 756 * Description:
 757 * This routine is the entry point for the debugfs open file operation. It gets
 758 * the vport from the i_private field in @inode, allocates the necessary buffer
 759 * for the log, fills the buffer from the in-memory log for this vport, and then
 760 * returns a pointer to that log in the private_data field in @file.
 761 *
 762 * Returns:
 763 * This function returns zero if successful. On error it will return an negative
 764 * error value.
 765 **/
 766static int
 767lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
 768{
 769        struct lpfc_hba *phba = inode->i_private;
 770        struct lpfc_debug *debug;
 771        int size;
 772        int rc = -ENOMEM;
 773
 774        if (!lpfc_debugfs_max_slow_ring_trc) {
 775                 rc = -ENOSPC;
 776                goto out;
 777        }
 778
 779        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 780        if (!debug)
 781                goto out;
 782
 783        /* Round to page boundary */
 784        size =  (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
 785        size = PAGE_ALIGN(size);
 786
 787        debug->buffer = kmalloc(size, GFP_KERNEL);
 788        if (!debug->buffer) {
 789                kfree(debug);
 790                goto out;
 791        }
 792
 793        debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
 794        file->private_data = debug;
 795
 796        rc = 0;
 797out:
 798        return rc;
 799}
 800
 801/**
 802 * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer
 803 * @inode: The inode pointer that contains a vport pointer.
 804 * @file: The file pointer to attach the log output.
 805 *
 806 * Description:
 807 * This routine is the entry point for the debugfs open file operation. It gets
 808 * the vport from the i_private field in @inode, allocates the necessary buffer
 809 * for the log, fills the buffer from the in-memory log for this vport, and then
 810 * returns a pointer to that log in the private_data field in @file.
 811 *
 812 * Returns:
 813 * This function returns zero if successful. On error it will return an negative
 814 * error value.
 815 **/
 816static int
 817lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
 818{
 819        struct lpfc_hba *phba = inode->i_private;
 820        struct lpfc_debug *debug;
 821        int rc = -ENOMEM;
 822
 823        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 824        if (!debug)
 825                goto out;
 826
 827        /* Round to page boundary */
 828        debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
 829        if (!debug->buffer) {
 830                kfree(debug);
 831                goto out;
 832        }
 833
 834        debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
 835                LPFC_HBQINFO_SIZE);
 836        file->private_data = debug;
 837
 838        rc = 0;
 839out:
 840        return rc;
 841}
 842
 843/**
 844 * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer
 845 * @inode: The inode pointer that contains a vport pointer.
 846 * @file: The file pointer to attach the log output.
 847 *
 848 * Description:
 849 * This routine is the entry point for the debugfs open file operation. It gets
 850 * the vport from the i_private field in @inode, allocates the necessary buffer
 851 * for the log, fills the buffer from the in-memory log for this vport, and then
 852 * returns a pointer to that log in the private_data field in @file.
 853 *
 854 * Returns:
 855 * This function returns zero if successful. On error it will return an negative
 856 * error value.
 857 **/
 858static int
 859lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
 860{
 861        struct lpfc_hba *phba = inode->i_private;
 862        struct lpfc_debug *debug;
 863        int rc = -ENOMEM;
 864
 865        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 866        if (!debug)
 867                goto out;
 868
 869        /* Round to page boundary */
 870        debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
 871        if (!debug->buffer) {
 872                kfree(debug);
 873                goto out;
 874        }
 875
 876        debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
 877                LPFC_DUMPHBASLIM_SIZE);
 878        file->private_data = debug;
 879
 880        rc = 0;
 881out:
 882        return rc;
 883}
 884
 885/**
 886 * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer
 887 * @inode: The inode pointer that contains a vport pointer.
 888 * @file: The file pointer to attach the log output.
 889 *
 890 * Description:
 891 * This routine is the entry point for the debugfs open file operation. It gets
 892 * the vport from the i_private field in @inode, allocates the necessary buffer
 893 * for the log, fills the buffer from the in-memory log for this vport, and then
 894 * returns a pointer to that log in the private_data field in @file.
 895 *
 896 * Returns:
 897 * This function returns zero if successful. On error it will return an negative
 898 * error value.
 899 **/
 900static int
 901lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
 902{
 903        struct lpfc_hba *phba = inode->i_private;
 904        struct lpfc_debug *debug;
 905        int rc = -ENOMEM;
 906
 907        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 908        if (!debug)
 909                goto out;
 910
 911        /* Round to page boundary */
 912        debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
 913        if (!debug->buffer) {
 914                kfree(debug);
 915                goto out;
 916        }
 917
 918        debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
 919                LPFC_DUMPHOSTSLIM_SIZE);
 920        file->private_data = debug;
 921
 922        rc = 0;
 923out:
 924        return rc;
 925}
 926
 927static int
 928lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file)
 929{
 930        struct lpfc_debug *debug;
 931        int rc = -ENOMEM;
 932
 933        if (!_dump_buf_data)
 934                return -EBUSY;
 935
 936        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 937        if (!debug)
 938                goto out;
 939
 940        /* Round to page boundary */
 941        printk(KERN_ERR "9059 BLKGRD:  %s: _dump_buf_data=0x%p\n",
 942                        __func__, _dump_buf_data);
 943        debug->buffer = _dump_buf_data;
 944        if (!debug->buffer) {
 945                kfree(debug);
 946                goto out;
 947        }
 948
 949        debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT;
 950        file->private_data = debug;
 951
 952        rc = 0;
 953out:
 954        return rc;
 955}
 956
 957static int
 958lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file)
 959{
 960        struct lpfc_debug *debug;
 961        int rc = -ENOMEM;
 962
 963        if (!_dump_buf_dif)
 964                return -EBUSY;
 965
 966        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
 967        if (!debug)
 968                goto out;
 969
 970        /* Round to page boundary */
 971        printk(KERN_ERR "9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%pD\n",
 972                __func__, _dump_buf_dif, file);
 973        debug->buffer = _dump_buf_dif;
 974        if (!debug->buffer) {
 975                kfree(debug);
 976                goto out;
 977        }
 978
 979        debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT;
 980        file->private_data = debug;
 981
 982        rc = 0;
 983out:
 984        return rc;
 985}
 986
 987static ssize_t
 988lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf,
 989                  size_t nbytes, loff_t *ppos)
 990{
 991        /*
 992         * The Data/DIF buffers only save one failing IO
 993         * The write op is used as a reset mechanism after an IO has
 994         * already been saved to the next one can be saved
 995         */
 996        spin_lock(&_dump_buf_lock);
 997
 998        memset((void *)_dump_buf_data, 0,
 999                        ((1 << PAGE_SHIFT) << _dump_buf_data_order));
1000        memset((void *)_dump_buf_dif, 0,
1001                        ((1 << PAGE_SHIFT) << _dump_buf_dif_order));
1002
1003        _dump_buf_done = 0;
1004
1005        spin_unlock(&_dump_buf_lock);
1006
1007        return nbytes;
1008}
1009
1010static ssize_t
1011lpfc_debugfs_dif_err_read(struct file *file, char __user *buf,
1012        size_t nbytes, loff_t *ppos)
1013{
1014        struct dentry *dent = file->f_path.dentry;
1015        struct lpfc_hba *phba = file->private_data;
1016        char cbuf[32];
1017        uint64_t tmp = 0;
1018        int cnt = 0;
1019
1020        if (dent == phba->debug_writeGuard)
1021                cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wgrd_cnt);
1022        else if (dent == phba->debug_writeApp)
1023                cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wapp_cnt);
1024        else if (dent == phba->debug_writeRef)
1025                cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wref_cnt);
1026        else if (dent == phba->debug_readGuard)
1027                cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rgrd_cnt);
1028        else if (dent == phba->debug_readApp)
1029                cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rapp_cnt);
1030        else if (dent == phba->debug_readRef)
1031                cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rref_cnt);
1032        else if (dent == phba->debug_InjErrNPortID)
1033                cnt = snprintf(cbuf, 32, "0x%06x\n", phba->lpfc_injerr_nportid);
1034        else if (dent == phba->debug_InjErrWWPN) {
1035                memcpy(&tmp, &phba->lpfc_injerr_wwpn, sizeof(struct lpfc_name));
1036                tmp = cpu_to_be64(tmp);
1037                cnt = snprintf(cbuf, 32, "0x%016llx\n", tmp);
1038        } else if (dent == phba->debug_InjErrLBA) {
1039                if (phba->lpfc_injerr_lba == (sector_t)(-1))
1040                        cnt = snprintf(cbuf, 32, "off\n");
1041                else
1042                        cnt = snprintf(cbuf, 32, "0x%llx\n",
1043                                 (uint64_t) phba->lpfc_injerr_lba);
1044        } else
1045                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1046                         "0547 Unknown debugfs error injection entry\n");
1047
1048        return simple_read_from_buffer(buf, nbytes, ppos, &cbuf, cnt);
1049}
1050
1051static ssize_t
1052lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf,
1053        size_t nbytes, loff_t *ppos)
1054{
1055        struct dentry *dent = file->f_path.dentry;
1056        struct lpfc_hba *phba = file->private_data;
1057        char dstbuf[32];
1058        uint64_t tmp = 0;
1059        int size;
1060
1061        memset(dstbuf, 0, 32);
1062        size = (nbytes < 32) ? nbytes : 32;
1063        if (copy_from_user(dstbuf, buf, size))
1064                return 0;
1065
1066        if (dent == phba->debug_InjErrLBA) {
1067                if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f'))
1068                        tmp = (uint64_t)(-1);
1069        }
1070
1071        if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp)))
1072                return 0;
1073
1074        if (dent == phba->debug_writeGuard)
1075                phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp;
1076        else if (dent == phba->debug_writeApp)
1077                phba->lpfc_injerr_wapp_cnt = (uint32_t)tmp;
1078        else if (dent == phba->debug_writeRef)
1079                phba->lpfc_injerr_wref_cnt = (uint32_t)tmp;
1080        else if (dent == phba->debug_readGuard)
1081                phba->lpfc_injerr_rgrd_cnt = (uint32_t)tmp;
1082        else if (dent == phba->debug_readApp)
1083                phba->lpfc_injerr_rapp_cnt = (uint32_t)tmp;
1084        else if (dent == phba->debug_readRef)
1085                phba->lpfc_injerr_rref_cnt = (uint32_t)tmp;
1086        else if (dent == phba->debug_InjErrLBA)
1087                phba->lpfc_injerr_lba = (sector_t)tmp;
1088        else if (dent == phba->debug_InjErrNPortID)
1089                phba->lpfc_injerr_nportid = (uint32_t)(tmp & Mask_DID);
1090        else if (dent == phba->debug_InjErrWWPN) {
1091                tmp = cpu_to_be64(tmp);
1092                memcpy(&phba->lpfc_injerr_wwpn, &tmp, sizeof(struct lpfc_name));
1093        } else
1094                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1095                         "0548 Unknown debugfs error injection entry\n");
1096
1097        return nbytes;
1098}
1099
1100static int
1101lpfc_debugfs_dif_err_release(struct inode *inode, struct file *file)
1102{
1103        return 0;
1104}
1105
1106/**
1107 * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file
1108 * @inode: The inode pointer that contains a vport pointer.
1109 * @file: The file pointer to attach the log output.
1110 *
1111 * Description:
1112 * This routine is the entry point for the debugfs open file operation. It gets
1113 * the vport from the i_private field in @inode, allocates the necessary buffer
1114 * for the log, fills the buffer from the in-memory log for this vport, and then
1115 * returns a pointer to that log in the private_data field in @file.
1116 *
1117 * Returns:
1118 * This function returns zero if successful. On error it will return an negative
1119 * error value.
1120 **/
1121static int
1122lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
1123{
1124        struct lpfc_vport *vport = inode->i_private;
1125        struct lpfc_debug *debug;
1126        int rc = -ENOMEM;
1127
1128        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
1129        if (!debug)
1130                goto out;
1131
1132        /* Round to page boundary */
1133        debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
1134        if (!debug->buffer) {
1135                kfree(debug);
1136                goto out;
1137        }
1138
1139        debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
1140                LPFC_NODELIST_SIZE);
1141        file->private_data = debug;
1142
1143        rc = 0;
1144out:
1145        return rc;
1146}
1147
1148/**
1149 * lpfc_debugfs_lseek - Seek through a debugfs file
1150 * @file: The file pointer to seek through.
1151 * @off: The offset to seek to or the amount to seek by.
1152 * @whence: Indicates how to seek.
1153 *
1154 * Description:
1155 * This routine is the entry point for the debugfs lseek file operation. The
1156 * @whence parameter indicates whether @off is the offset to directly seek to,
1157 * or if it is a value to seek forward or reverse by. This function figures out
1158 * what the new offset of the debugfs file will be and assigns that value to the
1159 * f_pos field of @file.
1160 *
1161 * Returns:
1162 * This function returns the new offset if successful and returns a negative
1163 * error if unable to process the seek.
1164 **/
1165static loff_t
1166lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
1167{
1168        struct lpfc_debug *debug = file->private_data;
1169        return fixed_size_llseek(file, off, whence, debug->len);
1170}
1171
1172/**
1173 * lpfc_debugfs_read - Read a debugfs file
1174 * @file: The file pointer to read from.
1175 * @buf: The buffer to copy the data to.
1176 * @nbytes: The number of bytes to read.
1177 * @ppos: The position in the file to start reading from.
1178 *
1179 * Description:
1180 * This routine reads data from from the buffer indicated in the private_data
1181 * field of @file. It will start reading at @ppos and copy up to @nbytes of
1182 * data to @buf.
1183 *
1184 * Returns:
1185 * This function returns the amount of data that was read (this could be less
1186 * than @nbytes if the end of the file was reached) or a negative error value.
1187 **/
1188static ssize_t
1189lpfc_debugfs_read(struct file *file, char __user *buf,
1190                  size_t nbytes, loff_t *ppos)
1191{
1192        struct lpfc_debug *debug = file->private_data;
1193
1194        return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
1195                                       debug->len);
1196}
1197
1198/**
1199 * lpfc_debugfs_release - Release the buffer used to store debugfs file data
1200 * @inode: The inode pointer that contains a vport pointer. (unused)
1201 * @file: The file pointer that contains the buffer to release.
1202 *
1203 * Description:
1204 * This routine frees the buffer that was allocated when the debugfs file was
1205 * opened.
1206 *
1207 * Returns:
1208 * This function returns zero.
1209 **/
1210static int
1211lpfc_debugfs_release(struct inode *inode, struct file *file)
1212{
1213        struct lpfc_debug *debug = file->private_data;
1214
1215        kfree(debug->buffer);
1216        kfree(debug);
1217
1218        return 0;
1219}
1220
1221static int
1222lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file)
1223{
1224        struct lpfc_debug *debug = file->private_data;
1225
1226        debug->buffer = NULL;
1227        kfree(debug);
1228
1229        return 0;
1230}
1231
1232/*
1233 * ---------------------------------
1234 * iDiag debugfs file access methods
1235 * ---------------------------------
1236 *
1237 * All access methods are through the proper SLI4 PCI function's debugfs
1238 * iDiag directory:
1239 *
1240 *     /sys/kernel/debug/lpfc/fn<#>/iDiag
1241 */
1242
1243/**
1244 * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space
1245 * @buf: The pointer to the user space buffer.
1246 * @nbytes: The number of bytes in the user space buffer.
1247 * @idiag_cmd: pointer to the idiag command struct.
1248 *
1249 * This routine reads data from debugfs user space buffer and parses the
1250 * buffer for getting the idiag command and arguments. The while space in
1251 * between the set of data is used as the parsing separator.
1252 *
1253 * This routine returns 0 when successful, it returns proper error code
1254 * back to the user space in error conditions.
1255 */
1256static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
1257                              struct lpfc_idiag_cmd *idiag_cmd)
1258{
1259        char mybuf[64];
1260        char *pbuf, *step_str;
1261        int i;
1262        size_t bsize;
1263
1264        /* Protect copy from user */
1265        if (!access_ok(VERIFY_READ, buf, nbytes))
1266                return -EFAULT;
1267
1268        memset(mybuf, 0, sizeof(mybuf));
1269        memset(idiag_cmd, 0, sizeof(*idiag_cmd));
1270        bsize = min(nbytes, (sizeof(mybuf)-1));
1271
1272        if (copy_from_user(mybuf, buf, bsize))
1273                return -EFAULT;
1274        pbuf = &mybuf[0];
1275        step_str = strsep(&pbuf, "\t ");
1276
1277        /* The opcode must present */
1278        if (!step_str)
1279                return -EINVAL;
1280
1281        idiag_cmd->opcode = simple_strtol(step_str, NULL, 0);
1282        if (idiag_cmd->opcode == 0)
1283                return -EINVAL;
1284
1285        for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) {
1286                step_str = strsep(&pbuf, "\t ");
1287                if (!step_str)
1288                        return i;
1289                idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0);
1290        }
1291        return i;
1292}
1293
1294/**
1295 * lpfc_idiag_open - idiag open debugfs
1296 * @inode: The inode pointer that contains a pointer to phba.
1297 * @file: The file pointer to attach the file operation.
1298 *
1299 * Description:
1300 * This routine is the entry point for the debugfs open file operation. It
1301 * gets the reference to phba from the i_private field in @inode, it then
1302 * allocates buffer for the file operation, performs the necessary PCI config
1303 * space read into the allocated buffer according to the idiag user command
1304 * setup, and then returns a pointer to buffer in the private_data field in
1305 * @file.
1306 *
1307 * Returns:
1308 * This function returns zero if successful. On error it will return an
1309 * negative error value.
1310 **/
1311static int
1312lpfc_idiag_open(struct inode *inode, struct file *file)
1313{
1314        struct lpfc_debug *debug;
1315
1316        debug = kmalloc(sizeof(*debug), GFP_KERNEL);
1317        if (!debug)
1318                return -ENOMEM;
1319
1320        debug->i_private = inode->i_private;
1321        debug->buffer = NULL;
1322        file->private_data = debug;
1323
1324        return 0;
1325}
1326
1327/**
1328 * lpfc_idiag_release - Release idiag access file operation
1329 * @inode: The inode pointer that contains a vport pointer. (unused)
1330 * @file: The file pointer that contains the buffer to release.
1331 *
1332 * Description:
1333 * This routine is the generic release routine for the idiag access file
1334 * operation, it frees the buffer that was allocated when the debugfs file
1335 * was opened.
1336 *
1337 * Returns:
1338 * This function returns zero.
1339 **/
1340static int
1341lpfc_idiag_release(struct inode *inode, struct file *file)
1342{
1343        struct lpfc_debug *debug = file->private_data;
1344
1345        /* Free the buffers to the file operation */
1346        kfree(debug->buffer);
1347        kfree(debug);
1348
1349        return 0;
1350}
1351
1352/**
1353 * lpfc_idiag_cmd_release - Release idiag cmd access file operation
1354 * @inode: The inode pointer that contains a vport pointer. (unused)
1355 * @file: The file pointer that contains the buffer to release.
1356 *
1357 * Description:
1358 * This routine frees the buffer that was allocated when the debugfs file
1359 * was opened. It also reset the fields in the idiag command struct in the
1360 * case of command for write operation.
1361 *
1362 * Returns:
1363 * This function returns zero.
1364 **/
1365static int
1366lpfc_idiag_cmd_release(struct inode *inode, struct file *file)
1367{
1368        struct lpfc_debug *debug = file->private_data;
1369
1370        if (debug->op == LPFC_IDIAG_OP_WR) {
1371                switch (idiag.cmd.opcode) {
1372                case LPFC_IDIAG_CMD_PCICFG_WR:
1373                case LPFC_IDIAG_CMD_PCICFG_ST:
1374                case LPFC_IDIAG_CMD_PCICFG_CL:
1375                case LPFC_IDIAG_CMD_QUEACC_WR:
1376                case LPFC_IDIAG_CMD_QUEACC_ST:
1377                case LPFC_IDIAG_CMD_QUEACC_CL:
1378                        memset(&idiag, 0, sizeof(idiag));
1379                        break;
1380                default:
1381                        break;
1382                }
1383        }
1384
1385        /* Free the buffers to the file operation */
1386        kfree(debug->buffer);
1387        kfree(debug);
1388
1389        return 0;
1390}
1391
1392/**
1393 * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg
1394 * @file: The file pointer to read from.
1395 * @buf: The buffer to copy the data to.
1396 * @nbytes: The number of bytes to read.
1397 * @ppos: The position in the file to start reading from.
1398 *
1399 * Description:
1400 * This routine reads data from the @phba pci config space according to the
1401 * idiag command, and copies to user @buf. Depending on the PCI config space
1402 * read command setup, it does either a single register read of a byte
1403 * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all
1404 * registers from the 4K extended PCI config space.
1405 *
1406 * Returns:
1407 * This function returns the amount of data that was read (this could be less
1408 * than @nbytes if the end of the file was reached) or a negative error value.
1409 **/
1410static ssize_t
1411lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes,
1412                       loff_t *ppos)
1413{
1414        struct lpfc_debug *debug = file->private_data;
1415        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1416        int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE;
1417        int where, count;
1418        char *pbuffer;
1419        struct pci_dev *pdev;
1420        uint32_t u32val;
1421        uint16_t u16val;
1422        uint8_t u8val;
1423
1424        pdev = phba->pcidev;
1425        if (!pdev)
1426                return 0;
1427
1428        /* This is a user read operation */
1429        debug->op = LPFC_IDIAG_OP_RD;
1430
1431        if (!debug->buffer)
1432                debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL);
1433        if (!debug->buffer)
1434                return 0;
1435        pbuffer = debug->buffer;
1436
1437        if (*ppos)
1438                return 0;
1439
1440        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
1441                where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
1442                count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
1443        } else
1444                return 0;
1445
1446        /* Read single PCI config space register */
1447        switch (count) {
1448        case SIZE_U8: /* byte (8 bits) */
1449                pci_read_config_byte(pdev, where, &u8val);
1450                len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1451                                "%03x: %02x\n", where, u8val);
1452                break;
1453        case SIZE_U16: /* word (16 bits) */
1454                pci_read_config_word(pdev, where, &u16val);
1455                len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1456                                "%03x: %04x\n", where, u16val);
1457                break;
1458        case SIZE_U32: /* double word (32 bits) */
1459                pci_read_config_dword(pdev, where, &u32val);
1460                len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1461                                "%03x: %08x\n", where, u32val);
1462                break;
1463        case LPFC_PCI_CFG_BROWSE: /* browse all */
1464                goto pcicfg_browse;
1465                break;
1466        default:
1467                /* illegal count */
1468                len = 0;
1469                break;
1470        }
1471        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1472
1473pcicfg_browse:
1474
1475        /* Browse all PCI config space registers */
1476        offset_label = idiag.offset.last_rd;
1477        offset = offset_label;
1478
1479        /* Read PCI config space */
1480        len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1481                        "%03x: ", offset_label);
1482        while (index > 0) {
1483                pci_read_config_dword(pdev, offset, &u32val);
1484                len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1485                                "%08x ", u32val);
1486                offset += sizeof(uint32_t);
1487                if (offset >= LPFC_PCI_CFG_SIZE) {
1488                        len += snprintf(pbuffer+len,
1489                                        LPFC_PCI_CFG_SIZE-len, "\n");
1490                        break;
1491                }
1492                index -= sizeof(uint32_t);
1493                if (!index)
1494                        len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1495                                        "\n");
1496                else if (!(index % (8 * sizeof(uint32_t)))) {
1497                        offset_label += (8 * sizeof(uint32_t));
1498                        len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
1499                                        "\n%03x: ", offset_label);
1500                }
1501        }
1502
1503        /* Set up the offset for next portion of pci cfg read */
1504        if (index == 0) {
1505                idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE;
1506                if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE)
1507                        idiag.offset.last_rd = 0;
1508        } else
1509                idiag.offset.last_rd = 0;
1510
1511        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1512}
1513
1514/**
1515 * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands
1516 * @file: The file pointer to read from.
1517 * @buf: The buffer to copy the user data from.
1518 * @nbytes: The number of bytes to get.
1519 * @ppos: The position in the file to start reading from.
1520 *
1521 * This routine get the debugfs idiag command struct from user space and
1522 * then perform the syntax check for PCI config space read or write command
1523 * accordingly. In the case of PCI config space read command, it sets up
1524 * the command in the idiag command struct for the debugfs read operation.
1525 * In the case of PCI config space write operation, it executes the write
1526 * operation into the PCI config space accordingly.
1527 *
1528 * It returns the @nbytges passing in from debugfs user space when successful.
1529 * In case of error conditions, it returns proper error code back to the user
1530 * space.
1531 */
1532static ssize_t
1533lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf,
1534                        size_t nbytes, loff_t *ppos)
1535{
1536        struct lpfc_debug *debug = file->private_data;
1537        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1538        uint32_t where, value, count;
1539        uint32_t u32val;
1540        uint16_t u16val;
1541        uint8_t u8val;
1542        struct pci_dev *pdev;
1543        int rc;
1544
1545        pdev = phba->pcidev;
1546        if (!pdev)
1547                return -EFAULT;
1548
1549        /* This is a user write operation */
1550        debug->op = LPFC_IDIAG_OP_WR;
1551
1552        rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
1553        if (rc < 0)
1554                return rc;
1555
1556        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
1557                /* Sanity check on PCI config read command line arguments */
1558                if (rc != LPFC_PCI_CFG_RD_CMD_ARG)
1559                        goto error_out;
1560                /* Read command from PCI config space, set up command fields */
1561                where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
1562                count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
1563                if (count == LPFC_PCI_CFG_BROWSE) {
1564                        if (where % sizeof(uint32_t))
1565                                goto error_out;
1566                        /* Starting offset to browse */
1567                        idiag.offset.last_rd = where;
1568                } else if ((count != sizeof(uint8_t)) &&
1569                           (count != sizeof(uint16_t)) &&
1570                           (count != sizeof(uint32_t)))
1571                        goto error_out;
1572                if (count == sizeof(uint8_t)) {
1573                        if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
1574                                goto error_out;
1575                        if (where % sizeof(uint8_t))
1576                                goto error_out;
1577                }
1578                if (count == sizeof(uint16_t)) {
1579                        if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
1580                                goto error_out;
1581                        if (where % sizeof(uint16_t))
1582                                goto error_out;
1583                }
1584                if (count == sizeof(uint32_t)) {
1585                        if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
1586                                goto error_out;
1587                        if (where % sizeof(uint32_t))
1588                                goto error_out;
1589                }
1590        } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR ||
1591                   idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST ||
1592                   idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1593                /* Sanity check on PCI config write command line arguments */
1594                if (rc != LPFC_PCI_CFG_WR_CMD_ARG)
1595                        goto error_out;
1596                /* Write command to PCI config space, read-modify-write */
1597                where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
1598                count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
1599                value = idiag.cmd.data[IDIAG_PCICFG_VALUE_INDX];
1600                /* Sanity checks */
1601                if ((count != sizeof(uint8_t)) &&
1602                    (count != sizeof(uint16_t)) &&
1603                    (count != sizeof(uint32_t)))
1604                        goto error_out;
1605                if (count == sizeof(uint8_t)) {
1606                        if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
1607                                goto error_out;
1608                        if (where % sizeof(uint8_t))
1609                                goto error_out;
1610                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1611                                pci_write_config_byte(pdev, where,
1612                                                      (uint8_t)value);
1613                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1614                                rc = pci_read_config_byte(pdev, where, &u8val);
1615                                if (!rc) {
1616                                        u8val |= (uint8_t)value;
1617                                        pci_write_config_byte(pdev, where,
1618                                                              u8val);
1619                                }
1620                        }
1621                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1622                                rc = pci_read_config_byte(pdev, where, &u8val);
1623                                if (!rc) {
1624                                        u8val &= (uint8_t)(~value);
1625                                        pci_write_config_byte(pdev, where,
1626                                                              u8val);
1627                                }
1628                        }
1629                }
1630                if (count == sizeof(uint16_t)) {
1631                        if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
1632                                goto error_out;
1633                        if (where % sizeof(uint16_t))
1634                                goto error_out;
1635                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1636                                pci_write_config_word(pdev, where,
1637                                                      (uint16_t)value);
1638                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1639                                rc = pci_read_config_word(pdev, where, &u16val);
1640                                if (!rc) {
1641                                        u16val |= (uint16_t)value;
1642                                        pci_write_config_word(pdev, where,
1643                                                              u16val);
1644                                }
1645                        }
1646                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1647                                rc = pci_read_config_word(pdev, where, &u16val);
1648                                if (!rc) {
1649                                        u16val &= (uint16_t)(~value);
1650                                        pci_write_config_word(pdev, where,
1651                                                              u16val);
1652                                }
1653                        }
1654                }
1655                if (count == sizeof(uint32_t)) {
1656                        if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
1657                                goto error_out;
1658                        if (where % sizeof(uint32_t))
1659                                goto error_out;
1660                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
1661                                pci_write_config_dword(pdev, where, value);
1662                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
1663                                rc = pci_read_config_dword(pdev, where,
1664                                                           &u32val);
1665                                if (!rc) {
1666                                        u32val |= value;
1667                                        pci_write_config_dword(pdev, where,
1668                                                               u32val);
1669                                }
1670                        }
1671                        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
1672                                rc = pci_read_config_dword(pdev, where,
1673                                                           &u32val);
1674                                if (!rc) {
1675                                        u32val &= ~value;
1676                                        pci_write_config_dword(pdev, where,
1677                                                               u32val);
1678                                }
1679                        }
1680                }
1681        } else
1682                /* All other opecodes are illegal for now */
1683                goto error_out;
1684
1685        return nbytes;
1686error_out:
1687        memset(&idiag, 0, sizeof(idiag));
1688        return -EINVAL;
1689}
1690
1691/**
1692 * lpfc_idiag_baracc_read - idiag debugfs pci bar access read
1693 * @file: The file pointer to read from.
1694 * @buf: The buffer to copy the data to.
1695 * @nbytes: The number of bytes to read.
1696 * @ppos: The position in the file to start reading from.
1697 *
1698 * Description:
1699 * This routine reads data from the @phba pci bar memory mapped space
1700 * according to the idiag command, and copies to user @buf.
1701 *
1702 * Returns:
1703 * This function returns the amount of data that was read (this could be less
1704 * than @nbytes if the end of the file was reached) or a negative error value.
1705 **/
1706static ssize_t
1707lpfc_idiag_baracc_read(struct file *file, char __user *buf, size_t nbytes,
1708                       loff_t *ppos)
1709{
1710        struct lpfc_debug *debug = file->private_data;
1711        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1712        int offset_label, offset, offset_run, len = 0, index;
1713        int bar_num, acc_range, bar_size;
1714        char *pbuffer;
1715        void __iomem *mem_mapped_bar;
1716        uint32_t if_type;
1717        struct pci_dev *pdev;
1718        uint32_t u32val;
1719
1720        pdev = phba->pcidev;
1721        if (!pdev)
1722                return 0;
1723
1724        /* This is a user read operation */
1725        debug->op = LPFC_IDIAG_OP_RD;
1726
1727        if (!debug->buffer)
1728                debug->buffer = kmalloc(LPFC_PCI_BAR_RD_BUF_SIZE, GFP_KERNEL);
1729        if (!debug->buffer)
1730                return 0;
1731        pbuffer = debug->buffer;
1732
1733        if (*ppos)
1734                return 0;
1735
1736        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) {
1737                bar_num   = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX];
1738                offset    = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX];
1739                acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX];
1740                bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX];
1741        } else
1742                return 0;
1743
1744        if (acc_range == 0)
1745                return 0;
1746
1747        if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1748        if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
1749                if (bar_num == IDIAG_BARACC_BAR_0)
1750                        mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1751                else if (bar_num == IDIAG_BARACC_BAR_1)
1752                        mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p;
1753                else if (bar_num == IDIAG_BARACC_BAR_2)
1754                        mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p;
1755                else
1756                        return 0;
1757        } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
1758                if (bar_num == IDIAG_BARACC_BAR_0)
1759                        mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1760                else
1761                        return 0;
1762        } else
1763                return 0;
1764
1765        /* Read single PCI bar space register */
1766        if (acc_range == SINGLE_WORD) {
1767                offset_run = offset;
1768                u32val = readl(mem_mapped_bar + offset_run);
1769                len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
1770                                "%05x: %08x\n", offset_run, u32val);
1771        } else
1772                goto baracc_browse;
1773
1774        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1775
1776baracc_browse:
1777
1778        /* Browse all PCI bar space registers */
1779        offset_label = idiag.offset.last_rd;
1780        offset_run = offset_label;
1781
1782        /* Read PCI bar memory mapped space */
1783        len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
1784                        "%05x: ", offset_label);
1785        index = LPFC_PCI_BAR_RD_SIZE;
1786        while (index > 0) {
1787                u32val = readl(mem_mapped_bar + offset_run);
1788                len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
1789                                "%08x ", u32val);
1790                offset_run += sizeof(uint32_t);
1791                if (acc_range == LPFC_PCI_BAR_BROWSE) {
1792                        if (offset_run >= bar_size) {
1793                                len += snprintf(pbuffer+len,
1794                                        LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
1795                                break;
1796                        }
1797                } else {
1798                        if (offset_run >= offset +
1799                            (acc_range * sizeof(uint32_t))) {
1800                                len += snprintf(pbuffer+len,
1801                                        LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
1802                                break;
1803                        }
1804                }
1805                index -= sizeof(uint32_t);
1806                if (!index)
1807                        len += snprintf(pbuffer+len,
1808                                        LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
1809                else if (!(index % (8 * sizeof(uint32_t)))) {
1810                        offset_label += (8 * sizeof(uint32_t));
1811                        len += snprintf(pbuffer+len,
1812                                        LPFC_PCI_BAR_RD_BUF_SIZE-len,
1813                                        "\n%05x: ", offset_label);
1814                }
1815        }
1816
1817        /* Set up the offset for next portion of pci bar read */
1818        if (index == 0) {
1819                idiag.offset.last_rd += LPFC_PCI_BAR_RD_SIZE;
1820                if (acc_range == LPFC_PCI_BAR_BROWSE) {
1821                        if (idiag.offset.last_rd >= bar_size)
1822                                idiag.offset.last_rd = 0;
1823                } else {
1824                        if (offset_run >= offset +
1825                            (acc_range * sizeof(uint32_t)))
1826                                idiag.offset.last_rd = offset;
1827                }
1828        } else {
1829                if (acc_range == LPFC_PCI_BAR_BROWSE)
1830                        idiag.offset.last_rd = 0;
1831                else
1832                        idiag.offset.last_rd = offset;
1833        }
1834
1835        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
1836}
1837
1838/**
1839 * lpfc_idiag_baracc_write - Syntax check and set up idiag bar access commands
1840 * @file: The file pointer to read from.
1841 * @buf: The buffer to copy the user data from.
1842 * @nbytes: The number of bytes to get.
1843 * @ppos: The position in the file to start reading from.
1844 *
1845 * This routine get the debugfs idiag command struct from user space and
1846 * then perform the syntax check for PCI bar memory mapped space read or
1847 * write command accordingly. In the case of PCI bar memory mapped space
1848 * read command, it sets up the command in the idiag command struct for
1849 * the debugfs read operation. In the case of PCI bar memorpy mapped space
1850 * write operation, it executes the write operation into the PCI bar memory
1851 * mapped space accordingly.
1852 *
1853 * It returns the @nbytges passing in from debugfs user space when successful.
1854 * In case of error conditions, it returns proper error code back to the user
1855 * space.
1856 */
1857static ssize_t
1858lpfc_idiag_baracc_write(struct file *file, const char __user *buf,
1859                        size_t nbytes, loff_t *ppos)
1860{
1861        struct lpfc_debug *debug = file->private_data;
1862        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1863        uint32_t bar_num, bar_size, offset, value, acc_range;
1864        struct pci_dev *pdev;
1865        void __iomem *mem_mapped_bar;
1866        uint32_t if_type;
1867        uint32_t u32val;
1868        int rc;
1869
1870        pdev = phba->pcidev;
1871        if (!pdev)
1872                return -EFAULT;
1873
1874        /* This is a user write operation */
1875        debug->op = LPFC_IDIAG_OP_WR;
1876
1877        rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
1878        if (rc < 0)
1879                return rc;
1880
1881        if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1882        bar_num = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX];
1883
1884        if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
1885                if ((bar_num != IDIAG_BARACC_BAR_0) &&
1886                    (bar_num != IDIAG_BARACC_BAR_1) &&
1887                    (bar_num != IDIAG_BARACC_BAR_2))
1888                        goto error_out;
1889        } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
1890                if (bar_num != IDIAG_BARACC_BAR_0)
1891                        goto error_out;
1892        } else
1893                goto error_out;
1894
1895        if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
1896                if (bar_num == IDIAG_BARACC_BAR_0) {
1897                        idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1898                                LPFC_PCI_IF0_BAR0_SIZE;
1899                        mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1900                } else if (bar_num == IDIAG_BARACC_BAR_1) {
1901                        idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1902                                LPFC_PCI_IF0_BAR1_SIZE;
1903                        mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p;
1904                } else if (bar_num == IDIAG_BARACC_BAR_2) {
1905                        idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1906                                LPFC_PCI_IF0_BAR2_SIZE;
1907                        mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p;
1908                } else
1909                        goto error_out;
1910        } else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
1911                if (bar_num == IDIAG_BARACC_BAR_0) {
1912                        idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
1913                                LPFC_PCI_IF2_BAR0_SIZE;
1914                        mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
1915                } else
1916                        goto error_out;
1917        } else
1918                goto error_out;
1919
1920        offset = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX];
1921        if (offset % sizeof(uint32_t))
1922                goto error_out;
1923
1924        bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX];
1925        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) {
1926                /* Sanity check on PCI config read command line arguments */
1927                if (rc != LPFC_PCI_BAR_RD_CMD_ARG)
1928                        goto error_out;
1929                acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX];
1930                if (acc_range == LPFC_PCI_BAR_BROWSE) {
1931                        if (offset > bar_size - sizeof(uint32_t))
1932                                goto error_out;
1933                        /* Starting offset to browse */
1934                        idiag.offset.last_rd = offset;
1935                } else if (acc_range > SINGLE_WORD) {
1936                        if (offset + acc_range * sizeof(uint32_t) > bar_size)
1937                                goto error_out;
1938                        /* Starting offset to browse */
1939                        idiag.offset.last_rd = offset;
1940                } else if (acc_range != SINGLE_WORD)
1941                        goto error_out;
1942        } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR ||
1943                   idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST ||
1944                   idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) {
1945                /* Sanity check on PCI bar write command line arguments */
1946                if (rc != LPFC_PCI_BAR_WR_CMD_ARG)
1947                        goto error_out;
1948                /* Write command to PCI bar space, read-modify-write */
1949                acc_range = SINGLE_WORD;
1950                value = idiag.cmd.data[IDIAG_BARACC_REG_VAL_INDX];
1951                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR) {
1952                        writel(value, mem_mapped_bar + offset);
1953                        readl(mem_mapped_bar + offset);
1954                }
1955                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST) {
1956                        u32val = readl(mem_mapped_bar + offset);
1957                        u32val |= value;
1958                        writel(u32val, mem_mapped_bar + offset);
1959                        readl(mem_mapped_bar + offset);
1960                }
1961                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) {
1962                        u32val = readl(mem_mapped_bar + offset);
1963                        u32val &= ~value;
1964                        writel(u32val, mem_mapped_bar + offset);
1965                        readl(mem_mapped_bar + offset);
1966                }
1967        } else
1968                /* All other opecodes are illegal for now */
1969                goto error_out;
1970
1971        return nbytes;
1972error_out:
1973        memset(&idiag, 0, sizeof(idiag));
1974        return -EINVAL;
1975}
1976
1977/**
1978 * lpfc_idiag_queinfo_read - idiag debugfs read queue information
1979 * @file: The file pointer to read from.
1980 * @buf: The buffer to copy the data to.
1981 * @nbytes: The number of bytes to read.
1982 * @ppos: The position in the file to start reading from.
1983 *
1984 * Description:
1985 * This routine reads data from the @phba SLI4 PCI function queue information,
1986 * and copies to user @buf.
1987 *
1988 * Returns:
1989 * This function returns the amount of data that was read (this could be less
1990 * than @nbytes if the end of the file was reached) or a negative error value.
1991 **/
1992static ssize_t
1993lpfc_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes,
1994                        loff_t *ppos)
1995{
1996        struct lpfc_debug *debug = file->private_data;
1997        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
1998        int len = 0;
1999        char *pbuffer;
2000        int x, cnt;
2001        int max_cnt;
2002        struct lpfc_queue *qp = NULL;
2003
2004
2005        if (!debug->buffer)
2006                debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL);
2007        if (!debug->buffer)
2008                return 0;
2009        pbuffer = debug->buffer;
2010        max_cnt = LPFC_QUE_INFO_GET_BUF_SIZE - 128;
2011
2012        if (*ppos)
2013                return 0;
2014
2015        spin_lock_irq(&phba->hbalock);
2016
2017        /* Fast-path event queue */
2018        if (phba->sli4_hba.hba_eq && phba->cfg_fcp_io_channel) {
2019                cnt = phba->cfg_fcp_io_channel;
2020
2021                for (x = 0; x < cnt; x++) {
2022
2023                        /* Fast-path EQ */
2024                        qp = phba->sli4_hba.hba_eq[x];
2025                        if (!qp)
2026                                goto proc_cq;
2027
2028                        len += snprintf(pbuffer+len,
2029                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2030                                "\nHBA EQ info: "
2031                                "EQ-STAT[max:x%x noE:x%x "
2032                                "bs:x%x proc:x%llx]\n",
2033                                qp->q_cnt_1, qp->q_cnt_2,
2034                                qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
2035
2036                        len += snprintf(pbuffer+len,
2037                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2038                                "EQID[%02d], "
2039                                "QE-CNT[%04d], QE-SIZE[%04d], "
2040                                "HOST-IDX[%04d], PORT-IDX[%04d]",
2041                                qp->queue_id,
2042                                qp->entry_count,
2043                                qp->entry_size,
2044                                qp->host_index,
2045                                qp->hba_index);
2046
2047
2048                        /* Reset max counter */
2049                        qp->EQ_max_eqe = 0;
2050
2051                        len +=  snprintf(pbuffer+len,
2052                                LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2053                        if (len >= max_cnt)
2054                                goto too_big;
2055proc_cq:
2056                        /* Fast-path FCP CQ */
2057                        qp = phba->sli4_hba.fcp_cq[x];
2058                        len += snprintf(pbuffer+len,
2059                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2060                                "\tFCP CQ info: ");
2061                        len += snprintf(pbuffer+len,
2062                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2063                                "AssocEQID[%02d]: "
2064                                "CQ STAT[max:x%x relw:x%x "
2065                                "xabt:x%x wq:x%llx]\n",
2066                                qp->assoc_qid,
2067                                qp->q_cnt_1, qp->q_cnt_2,
2068                                qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
2069                        len += snprintf(pbuffer+len,
2070                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2071                                "\tCQID[%02d], "
2072                                "QE-CNT[%04d], QE-SIZE[%04d], "
2073                                "HOST-IDX[%04d], PORT-IDX[%04d]",
2074                                qp->queue_id, qp->entry_count,
2075                                qp->entry_size, qp->host_index,
2076                                qp->hba_index);
2077
2078
2079                        /* Reset max counter */
2080                        qp->CQ_max_cqe = 0;
2081
2082                        len +=  snprintf(pbuffer+len,
2083                                LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2084                        if (len >= max_cnt)
2085                                goto too_big;
2086
2087                        /* Fast-path FCP WQ */
2088                        qp = phba->sli4_hba.fcp_wq[x];
2089
2090                        len += snprintf(pbuffer+len,
2091                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2092                                "\t\tFCP WQ info: ");
2093                        len += snprintf(pbuffer+len,
2094                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2095                                "AssocCQID[%02d]: "
2096                                "WQ-STAT[oflow:x%x posted:x%llx]\n",
2097                                qp->assoc_qid,
2098                                qp->q_cnt_1, (unsigned long long)qp->q_cnt_4);
2099                        len += snprintf(pbuffer+len,
2100                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2101                                "\t\tWQID[%02d], "
2102                                "QE-CNT[%04d], QE-SIZE[%04d], "
2103                                "HOST-IDX[%04d], PORT-IDX[%04d]",
2104                                qp->queue_id,
2105                                qp->entry_count,
2106                                qp->entry_size,
2107                                qp->host_index,
2108                                qp->hba_index);
2109
2110                        len +=  snprintf(pbuffer+len,
2111                                LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2112                        if (len >= max_cnt)
2113                                goto too_big;
2114
2115                        if (x)
2116                                continue;
2117
2118                        /* Only EQ 0 has slow path CQs configured */
2119
2120                        /* Slow-path mailbox CQ */
2121                        qp = phba->sli4_hba.mbx_cq;
2122                        if (qp) {
2123                                len += snprintf(pbuffer+len,
2124                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2125                                        "\tMBX CQ info: ");
2126                                len += snprintf(pbuffer+len,
2127                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2128                                        "AssocEQID[%02d]: "
2129                                        "CQ-STAT[mbox:x%x relw:x%x "
2130                                        "xabt:x%x wq:x%llx]\n",
2131                                        qp->assoc_qid,
2132                                        qp->q_cnt_1, qp->q_cnt_2,
2133                                        qp->q_cnt_3,
2134                                        (unsigned long long)qp->q_cnt_4);
2135                                len += snprintf(pbuffer+len,
2136                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2137                                        "\tCQID[%02d], "
2138                                        "QE-CNT[%04d], QE-SIZE[%04d], "
2139                                        "HOST-IDX[%04d], PORT-IDX[%04d]",
2140                                        qp->queue_id, qp->entry_count,
2141                                        qp->entry_size, qp->host_index,
2142                                        qp->hba_index);
2143
2144                                len +=  snprintf(pbuffer+len,
2145                                        LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2146                                if (len >= max_cnt)
2147                                        goto too_big;
2148                        }
2149
2150                        /* Slow-path MBOX MQ */
2151                        qp = phba->sli4_hba.mbx_wq;
2152                        if (qp) {
2153                                len += snprintf(pbuffer+len,
2154                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2155                                        "\t\tMBX MQ info: ");
2156                                len += snprintf(pbuffer+len,
2157                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2158                                        "AssocCQID[%02d]:\n",
2159                                        phba->sli4_hba.mbx_wq->assoc_qid);
2160                                len += snprintf(pbuffer+len,
2161                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2162                                        "\t\tWQID[%02d], "
2163                                        "QE-CNT[%04d], QE-SIZE[%04d], "
2164                                        "HOST-IDX[%04d], PORT-IDX[%04d]",
2165                                        qp->queue_id, qp->entry_count,
2166                                        qp->entry_size, qp->host_index,
2167                                        qp->hba_index);
2168
2169                                len +=  snprintf(pbuffer+len,
2170                                        LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2171                                if (len >= max_cnt)
2172                                        goto too_big;
2173                        }
2174
2175                        /* Slow-path ELS response CQ */
2176                        qp = phba->sli4_hba.els_cq;
2177                        if (qp) {
2178                                len += snprintf(pbuffer+len,
2179                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2180                                        "\tELS CQ info: ");
2181                                len += snprintf(pbuffer+len,
2182                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2183                                        "AssocEQID[%02d]: "
2184                                        "CQ-STAT[max:x%x relw:x%x "
2185                                        "xabt:x%x wq:x%llx]\n",
2186                                        qp->assoc_qid,
2187                                        qp->q_cnt_1, qp->q_cnt_2,
2188                                        qp->q_cnt_3,
2189                                        (unsigned long long)qp->q_cnt_4);
2190                                len += snprintf(pbuffer+len,
2191                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2192                                        "\tCQID [%02d], "
2193                                        "QE-CNT[%04d], QE-SIZE[%04d], "
2194                                        "HOST-IDX[%04d], PORT-IDX[%04d]",
2195                                        qp->queue_id, qp->entry_count,
2196                                        qp->entry_size, qp->host_index,
2197                                        qp->hba_index);
2198
2199                                /* Reset max counter */
2200                                qp->CQ_max_cqe = 0;
2201
2202                                len +=  snprintf(pbuffer+len,
2203                                        LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2204                                if (len >= max_cnt)
2205                                        goto too_big;
2206                        }
2207
2208                        /* Slow-path ELS WQ */
2209                        qp = phba->sli4_hba.els_wq;
2210                        if (qp) {
2211                                len += snprintf(pbuffer+len,
2212                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2213                                        "\t\tELS WQ info: ");
2214                                len += snprintf(pbuffer+len,
2215                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2216                                        "AssocCQID[%02d]: "
2217                                        " WQ-STAT[oflow:x%x "
2218                                        "posted:x%llx]\n",
2219                                        qp->assoc_qid,
2220                                        qp->q_cnt_1,
2221                                        (unsigned long long)qp->q_cnt_4);
2222                                len += snprintf(pbuffer+len,
2223                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2224                                        "\t\tWQID[%02d], "
2225                                        "QE-CNT[%04d], QE-SIZE[%04d], "
2226                                        "HOST-IDX[%04d], PORT-IDX[%04d]",
2227                                        qp->queue_id, qp->entry_count,
2228                                        qp->entry_size, qp->host_index,
2229                                        qp->hba_index);
2230
2231                                len +=  snprintf(pbuffer+len,
2232                                        LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2233                                if (len >= max_cnt)
2234                                        goto too_big;
2235                        }
2236
2237                        if (phba->sli4_hba.hdr_rq && phba->sli4_hba.dat_rq) {
2238                                /* Slow-path RQ header */
2239                                qp = phba->sli4_hba.hdr_rq;
2240
2241                                len += snprintf(pbuffer+len,
2242                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2243                                        "\t\tRQ info: ");
2244                                len += snprintf(pbuffer+len,
2245                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2246                                        "AssocCQID[%02d]: "
2247                                        "RQ-STAT[nopost:x%x nobuf:x%x "
2248                                        "trunc:x%x rcv:x%llx]\n",
2249                                        qp->assoc_qid,
2250                                        qp->q_cnt_1, qp->q_cnt_2,
2251                                        qp->q_cnt_3,
2252                                        (unsigned long long)qp->q_cnt_4);
2253                                len += snprintf(pbuffer+len,
2254                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2255                                        "\t\tHQID[%02d], "
2256                                        "QE-CNT[%04d], QE-SIZE[%04d], "
2257                                        "HOST-IDX[%04d], PORT-IDX[%04d]\n",
2258                                        qp->queue_id,
2259                                        qp->entry_count,
2260                                        qp->entry_size,
2261                                        qp->host_index,
2262                                        qp->hba_index);
2263
2264                                /* Slow-path RQ data */
2265                                qp = phba->sli4_hba.dat_rq;
2266                                len += snprintf(pbuffer+len,
2267                                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2268                                        "\t\tDQID[%02d], "
2269                                        "QE-CNT[%04d], QE-SIZE[%04d], "
2270                                        "HOST-IDX[%04d], PORT-IDX[%04d]\n",
2271                                        qp->queue_id,
2272                                        qp->entry_count,
2273                                        qp->entry_size,
2274                                        qp->host_index,
2275                                        qp->hba_index);
2276
2277                                len +=  snprintf(pbuffer+len,
2278                                        LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2279                        }
2280                }
2281        }
2282
2283        if (phba->cfg_fof) {
2284                /* FOF EQ */
2285                qp = phba->sli4_hba.fof_eq;
2286                if (!qp)
2287                        goto out;
2288
2289                len += snprintf(pbuffer+len,
2290                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2291                        "\nFOF EQ info: "
2292                        "EQ-STAT[max:x%x noE:x%x "
2293                        "bs:x%x proc:x%llx]\n",
2294                        qp->q_cnt_1, qp->q_cnt_2,
2295                        qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
2296
2297                len += snprintf(pbuffer+len,
2298                        LPFC_QUE_INFO_GET_BUF_SIZE-len,
2299                        "EQID[%02d], "
2300                        "QE-CNT[%04d], QE-SIZE[%04d], "
2301                        "HOST-IDX[%04d], PORT-IDX[%04d]",
2302                        qp->queue_id,
2303                        qp->entry_count,
2304                        qp->entry_size,
2305                        qp->host_index,
2306                        qp->hba_index);
2307
2308                /* Reset max counter */
2309                qp->EQ_max_eqe = 0;
2310
2311                len +=  snprintf(pbuffer+len,
2312                        LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2313                if (len >= max_cnt)
2314                        goto too_big;
2315        }
2316
2317        if (phba->cfg_fof) {
2318
2319                /* OAS CQ */
2320                qp = phba->sli4_hba.oas_cq;
2321                if (qp) {
2322                        len += snprintf(pbuffer+len,
2323                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2324                                "\tOAS CQ info: ");
2325                        len += snprintf(pbuffer+len,
2326                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2327                                "AssocEQID[%02d]: "
2328                                "CQ STAT[max:x%x relw:x%x "
2329                                "xabt:x%x wq:x%llx]\n",
2330                                qp->assoc_qid,
2331                                qp->q_cnt_1, qp->q_cnt_2,
2332                                qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
2333                        len += snprintf(pbuffer+len,
2334                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2335                                "\tCQID[%02d], "
2336                                "QE-CNT[%04d], QE-SIZE[%04d], "
2337                                "HOST-IDX[%04d], PORT-IDX[%04d]",
2338                                qp->queue_id, qp->entry_count,
2339                                qp->entry_size, qp->host_index,
2340                                qp->hba_index);
2341
2342                        /* Reset max counter */
2343                        qp->CQ_max_cqe = 0;
2344
2345                        len +=  snprintf(pbuffer+len,
2346                                LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2347                        if (len >= max_cnt)
2348                                goto too_big;
2349                }
2350
2351                /* OAS WQ */
2352                qp = phba->sli4_hba.oas_wq;
2353                if (qp) {
2354                        len += snprintf(pbuffer+len,
2355                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2356                                "\t\tOAS WQ info: ");
2357                        len += snprintf(pbuffer+len,
2358                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2359                                "AssocCQID[%02d]: "
2360                                "WQ-STAT[oflow:x%x posted:x%llx]\n",
2361                                qp->assoc_qid,
2362                                qp->q_cnt_1, (unsigned long long)qp->q_cnt_4);
2363                        len += snprintf(pbuffer+len,
2364                                LPFC_QUE_INFO_GET_BUF_SIZE-len,
2365                                "\t\tWQID[%02d], "
2366                                "QE-CNT[%04d], QE-SIZE[%04d], "
2367                                "HOST-IDX[%04d], PORT-IDX[%04d]",
2368                                qp->queue_id,
2369                                qp->entry_count,
2370                                qp->entry_size,
2371                                qp->host_index,
2372                                qp->hba_index);
2373
2374                        len +=  snprintf(pbuffer+len,
2375                                LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");
2376                        if (len >= max_cnt)
2377                                goto too_big;
2378                }
2379        }
2380out:
2381        spin_unlock_irq(&phba->hbalock);
2382        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2383
2384too_big:
2385        len +=  snprintf(pbuffer+len,
2386                LPFC_QUE_INFO_GET_BUF_SIZE-len, "Truncated ...\n");
2387        spin_unlock_irq(&phba->hbalock);
2388        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2389}
2390
2391/**
2392 * lpfc_idiag_que_param_check - queue access command parameter sanity check
2393 * @q: The pointer to queue structure.
2394 * @index: The index into a queue entry.
2395 * @count: The number of queue entries to access.
2396 *
2397 * Description:
2398 * The routine performs sanity check on device queue access method commands.
2399 *
2400 * Returns:
2401 * This function returns -EINVAL when fails the sanity check, otherwise, it
2402 * returns 0.
2403 **/
2404static int
2405lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count)
2406{
2407        /* Only support single entry read or browsing */
2408        if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE))
2409                return -EINVAL;
2410        if (index > q->entry_count - 1)
2411                return -EINVAL;
2412        return 0;
2413}
2414
2415/**
2416 * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index
2417 * @pbuffer: The pointer to buffer to copy the read data into.
2418 * @pque: The pointer to the queue to be read.
2419 * @index: The index into the queue entry.
2420 *
2421 * Description:
2422 * This routine reads out a single entry from the given queue's index location
2423 * and copies it into the buffer provided.
2424 *
2425 * Returns:
2426 * This function returns 0 when it fails, otherwise, it returns the length of
2427 * the data read into the buffer provided.
2428 **/
2429static int
2430lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque,
2431                          uint32_t index)
2432{
2433        int offset, esize;
2434        uint32_t *pentry;
2435
2436        if (!pbuffer || !pque)
2437                return 0;
2438
2439        esize = pque->entry_size;
2440        len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
2441                        "QE-INDEX[%04d]:\n", index);
2442
2443        offset = 0;
2444        pentry = pque->qe[index].address;
2445        while (esize > 0) {
2446                len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
2447                                "%08x ", *pentry);
2448                pentry++;
2449                offset += sizeof(uint32_t);
2450                esize -= sizeof(uint32_t);
2451                if (esize > 0 && !(offset % (4 * sizeof(uint32_t))))
2452                        len += snprintf(pbuffer+len,
2453                                        LPFC_QUE_ACC_BUF_SIZE-len, "\n");
2454        }
2455        len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n");
2456
2457        return len;
2458}
2459
2460/**
2461 * lpfc_idiag_queacc_read - idiag debugfs read port queue
2462 * @file: The file pointer to read from.
2463 * @buf: The buffer to copy the data to.
2464 * @nbytes: The number of bytes to read.
2465 * @ppos: The position in the file to start reading from.
2466 *
2467 * Description:
2468 * This routine reads data from the @phba device queue memory according to the
2469 * idiag command, and copies to user @buf. Depending on the queue dump read
2470 * command setup, it does either a single queue entry read or browing through
2471 * all entries of the queue.
2472 *
2473 * Returns:
2474 * This function returns the amount of data that was read (this could be less
2475 * than @nbytes if the end of the file was reached) or a negative error value.
2476 **/
2477static ssize_t
2478lpfc_idiag_queacc_read(struct file *file, char __user *buf, size_t nbytes,
2479                       loff_t *ppos)
2480{
2481        struct lpfc_debug *debug = file->private_data;
2482        uint32_t last_index, index, count;
2483        struct lpfc_queue *pque = NULL;
2484        char *pbuffer;
2485        int len = 0;
2486
2487        /* This is a user read operation */
2488        debug->op = LPFC_IDIAG_OP_RD;
2489
2490        if (!debug->buffer)
2491                debug->buffer = kmalloc(LPFC_QUE_ACC_BUF_SIZE, GFP_KERNEL);
2492        if (!debug->buffer)
2493                return 0;
2494        pbuffer = debug->buffer;
2495
2496        if (*ppos)
2497                return 0;
2498
2499        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
2500                index = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX];
2501                count = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
2502                pque = (struct lpfc_queue *)idiag.ptr_private;
2503        } else
2504                return 0;
2505
2506        /* Browse the queue starting from index */
2507        if (count == LPFC_QUE_ACC_BROWSE)
2508                goto que_browse;
2509
2510        /* Read a single entry from the queue */
2511        len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);
2512
2513        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2514
2515que_browse:
2516
2517        /* Browse all entries from the queue */
2518        last_index = idiag.offset.last_rd;
2519        index = last_index;
2520
2521        while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) {
2522                len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);
2523                index++;
2524                if (index > pque->entry_count - 1)
2525                        break;
2526        }
2527
2528        /* Set up the offset for next portion of pci cfg read */
2529        if (index > pque->entry_count - 1)
2530                index = 0;
2531        idiag.offset.last_rd = index;
2532
2533        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2534}
2535
2536/**
2537 * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc commands
2538 * @file: The file pointer to read from.
2539 * @buf: The buffer to copy the user data from.
2540 * @nbytes: The number of bytes to get.
2541 * @ppos: The position in the file to start reading from.
2542 *
2543 * This routine get the debugfs idiag command struct from user space and then
2544 * perform the syntax check for port queue read (dump) or write (set) command
2545 * accordingly. In the case of port queue read command, it sets up the command
2546 * in the idiag command struct for the following debugfs read operation. In
2547 * the case of port queue write operation, it executes the write operation
2548 * into the port queue entry accordingly.
2549 *
2550 * It returns the @nbytges passing in from debugfs user space when successful.
2551 * In case of error conditions, it returns proper error code back to the user
2552 * space.
2553 **/
2554static ssize_t
2555lpfc_idiag_queacc_write(struct file *file, const char __user *buf,
2556                        size_t nbytes, loff_t *ppos)
2557{
2558        struct lpfc_debug *debug = file->private_data;
2559        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2560        uint32_t qidx, quetp, queid, index, count, offset, value;
2561        uint32_t *pentry;
2562        struct lpfc_queue *pque;
2563        int rc;
2564
2565        /* This is a user write operation */
2566        debug->op = LPFC_IDIAG_OP_WR;
2567
2568        rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
2569        if (rc < 0)
2570                return rc;
2571
2572        /* Get and sanity check on command feilds */
2573        quetp  = idiag.cmd.data[IDIAG_QUEACC_QUETP_INDX];
2574        queid  = idiag.cmd.data[IDIAG_QUEACC_QUEID_INDX];
2575        index  = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX];
2576        count  = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
2577        offset = idiag.cmd.data[IDIAG_QUEACC_OFFST_INDX];
2578        value  = idiag.cmd.data[IDIAG_QUEACC_VALUE_INDX];
2579
2580        /* Sanity check on command line arguments */
2581        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
2582            idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
2583            idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
2584                if (rc != LPFC_QUE_ACC_WR_CMD_ARG)
2585                        goto error_out;
2586                if (count != 1)
2587                        goto error_out;
2588        } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
2589                if (rc != LPFC_QUE_ACC_RD_CMD_ARG)
2590                        goto error_out;
2591        } else
2592                goto error_out;
2593
2594        switch (quetp) {
2595        case LPFC_IDIAG_EQ:
2596                /* HBA event queue */
2597                if (phba->sli4_hba.hba_eq) {
2598                        for (qidx = 0; qidx < phba->cfg_fcp_io_channel;
2599                                qidx++) {
2600                                if (phba->sli4_hba.hba_eq[qidx] &&
2601                                    phba->sli4_hba.hba_eq[qidx]->queue_id ==
2602                                    queid) {
2603                                        /* Sanity check */
2604                                        rc = lpfc_idiag_que_param_check(
2605                                                phba->sli4_hba.hba_eq[qidx],
2606                                                index, count);
2607                                        if (rc)
2608                                                goto error_out;
2609                                        idiag.ptr_private =
2610                                                phba->sli4_hba.hba_eq[qidx];
2611                                        goto pass_check;
2612                                }
2613                        }
2614                }
2615                goto error_out;
2616                break;
2617        case LPFC_IDIAG_CQ:
2618                /* MBX complete queue */
2619                if (phba->sli4_hba.mbx_cq &&
2620                    phba->sli4_hba.mbx_cq->queue_id == queid) {
2621                        /* Sanity check */
2622                        rc = lpfc_idiag_que_param_check(
2623                                        phba->sli4_hba.mbx_cq, index, count);
2624                        if (rc)
2625                                goto error_out;
2626                        idiag.ptr_private = phba->sli4_hba.mbx_cq;
2627                        goto pass_check;
2628                }
2629                /* ELS complete queue */
2630                if (phba->sli4_hba.els_cq &&
2631                    phba->sli4_hba.els_cq->queue_id == queid) {
2632                        /* Sanity check */
2633                        rc = lpfc_idiag_que_param_check(
2634                                        phba->sli4_hba.els_cq, index, count);
2635                        if (rc)
2636                                goto error_out;
2637                        idiag.ptr_private = phba->sli4_hba.els_cq;
2638                        goto pass_check;
2639                }
2640                /* FCP complete queue */
2641                if (phba->sli4_hba.fcp_cq) {
2642                        qidx = 0;
2643                        do {
2644                                if (phba->sli4_hba.fcp_cq[qidx] &&
2645                                    phba->sli4_hba.fcp_cq[qidx]->queue_id ==
2646                                    queid) {
2647                                        /* Sanity check */
2648                                        rc = lpfc_idiag_que_param_check(
2649                                                phba->sli4_hba.fcp_cq[qidx],
2650                                                index, count);
2651                                        if (rc)
2652                                                goto error_out;
2653                                        idiag.ptr_private =
2654                                                phba->sli4_hba.fcp_cq[qidx];
2655                                        goto pass_check;
2656                                }
2657                        } while (++qidx < phba->cfg_fcp_io_channel);
2658                }
2659                goto error_out;
2660                break;
2661        case LPFC_IDIAG_MQ:
2662                /* MBX work queue */
2663                if (phba->sli4_hba.mbx_wq &&
2664                    phba->sli4_hba.mbx_wq->queue_id == queid) {
2665                        /* Sanity check */
2666                        rc = lpfc_idiag_que_param_check(
2667                                        phba->sli4_hba.mbx_wq, index, count);
2668                        if (rc)
2669                                goto error_out;
2670                        idiag.ptr_private = phba->sli4_hba.mbx_wq;
2671                        goto pass_check;
2672                }
2673                goto error_out;
2674                break;
2675        case LPFC_IDIAG_WQ:
2676                /* ELS work queue */
2677                if (phba->sli4_hba.els_wq &&
2678                    phba->sli4_hba.els_wq->queue_id == queid) {
2679                        /* Sanity check */
2680                        rc = lpfc_idiag_que_param_check(
2681                                        phba->sli4_hba.els_wq, index, count);
2682                        if (rc)
2683                                goto error_out;
2684                        idiag.ptr_private = phba->sli4_hba.els_wq;
2685                        goto pass_check;
2686                }
2687                /* FCP work queue */
2688                if (phba->sli4_hba.fcp_wq) {
2689                        for (qidx = 0; qidx < phba->cfg_fcp_io_channel;
2690                                qidx++) {
2691                                if (!phba->sli4_hba.fcp_wq[qidx])
2692                                        continue;
2693                                if (phba->sli4_hba.fcp_wq[qidx]->queue_id ==
2694                                    queid) {
2695                                        /* Sanity check */
2696                                        rc = lpfc_idiag_que_param_check(
2697                                                phba->sli4_hba.fcp_wq[qidx],
2698                                                index, count);
2699                                        if (rc)
2700                                                goto error_out;
2701                                        idiag.ptr_private =
2702                                                phba->sli4_hba.fcp_wq[qidx];
2703                                        goto pass_check;
2704                                }
2705                        }
2706                }
2707                goto error_out;
2708                break;
2709        case LPFC_IDIAG_RQ:
2710                /* HDR queue */
2711                if (phba->sli4_hba.hdr_rq &&
2712                    phba->sli4_hba.hdr_rq->queue_id == queid) {
2713                        /* Sanity check */
2714                        rc = lpfc_idiag_que_param_check(
2715                                        phba->sli4_hba.hdr_rq, index, count);
2716                        if (rc)
2717                                goto error_out;
2718                        idiag.ptr_private = phba->sli4_hba.hdr_rq;
2719                        goto pass_check;
2720                }
2721                /* DAT queue */
2722                if (phba->sli4_hba.dat_rq &&
2723                    phba->sli4_hba.dat_rq->queue_id == queid) {
2724                        /* Sanity check */
2725                        rc = lpfc_idiag_que_param_check(
2726                                        phba->sli4_hba.dat_rq, index, count);
2727                        if (rc)
2728                                goto error_out;
2729                        idiag.ptr_private = phba->sli4_hba.dat_rq;
2730                        goto pass_check;
2731                }
2732                goto error_out;
2733                break;
2734        default:
2735                goto error_out;
2736                break;
2737        }
2738
2739pass_check:
2740
2741        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
2742                if (count == LPFC_QUE_ACC_BROWSE)
2743                        idiag.offset.last_rd = index;
2744        }
2745
2746        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
2747            idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
2748            idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
2749                /* Additional sanity checks on write operation */
2750                pque = (struct lpfc_queue *)idiag.ptr_private;
2751                if (offset > pque->entry_size/sizeof(uint32_t) - 1)
2752                        goto error_out;
2753                pentry = pque->qe[index].address;
2754                pentry += offset;
2755                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR)
2756                        *pentry = value;
2757                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST)
2758                        *pentry |= value;
2759                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL)
2760                        *pentry &= ~value;
2761        }
2762        return nbytes;
2763
2764error_out:
2765        /* Clean out command structure on command error out */
2766        memset(&idiag, 0, sizeof(idiag));
2767        return -EINVAL;
2768}
2769
2770/**
2771 * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register
2772 * @phba: The pointer to hba structure.
2773 * @pbuffer: The pointer to the buffer to copy the data to.
2774 * @len: The lenght of bytes to copied.
2775 * @drbregid: The id to doorbell registers.
2776 *
2777 * Description:
2778 * This routine reads a doorbell register and copies its content to the
2779 * user buffer pointed to by @pbuffer.
2780 *
2781 * Returns:
2782 * This function returns the amount of data that was copied into @pbuffer.
2783 **/
2784static int
2785lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
2786                           int len, uint32_t drbregid)
2787{
2788
2789        if (!pbuffer)
2790                return 0;
2791
2792        switch (drbregid) {
2793        case LPFC_DRB_EQCQ:
2794                len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2795                                "EQCQ-DRB-REG: 0x%08x\n",
2796                                readl(phba->sli4_hba.EQCQDBregaddr));
2797                break;
2798        case LPFC_DRB_MQ:
2799                len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2800                                "MQ-DRB-REG:   0x%08x\n",
2801                                readl(phba->sli4_hba.MQDBregaddr));
2802                break;
2803        case LPFC_DRB_WQ:
2804                len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2805                                "WQ-DRB-REG:   0x%08x\n",
2806                                readl(phba->sli4_hba.WQDBregaddr));
2807                break;
2808        case LPFC_DRB_RQ:
2809                len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
2810                                "RQ-DRB-REG:   0x%08x\n",
2811                                readl(phba->sli4_hba.RQDBregaddr));
2812                break;
2813        default:
2814                break;
2815        }
2816
2817        return len;
2818}
2819
2820/**
2821 * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell
2822 * @file: The file pointer to read from.
2823 * @buf: The buffer to copy the data to.
2824 * @nbytes: The number of bytes to read.
2825 * @ppos: The position in the file to start reading from.
2826 *
2827 * Description:
2828 * This routine reads data from the @phba device doorbell register according
2829 * to the idiag command, and copies to user @buf. Depending on the doorbell
2830 * register read command setup, it does either a single doorbell register
2831 * read or dump all doorbell registers.
2832 *
2833 * Returns:
2834 * This function returns the amount of data that was read (this could be less
2835 * than @nbytes if the end of the file was reached) or a negative error value.
2836 **/
2837static ssize_t
2838lpfc_idiag_drbacc_read(struct file *file, char __user *buf, size_t nbytes,
2839                       loff_t *ppos)
2840{
2841        struct lpfc_debug *debug = file->private_data;
2842        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2843        uint32_t drb_reg_id, i;
2844        char *pbuffer;
2845        int len = 0;
2846
2847        /* This is a user read operation */
2848        debug->op = LPFC_IDIAG_OP_RD;
2849
2850        if (!debug->buffer)
2851                debug->buffer = kmalloc(LPFC_DRB_ACC_BUF_SIZE, GFP_KERNEL);
2852        if (!debug->buffer)
2853                return 0;
2854        pbuffer = debug->buffer;
2855
2856        if (*ppos)
2857                return 0;
2858
2859        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD)
2860                drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX];
2861        else
2862                return 0;
2863
2864        if (drb_reg_id == LPFC_DRB_ACC_ALL)
2865                for (i = 1; i <= LPFC_DRB_MAX; i++)
2866                        len = lpfc_idiag_drbacc_read_reg(phba,
2867                                                         pbuffer, len, i);
2868        else
2869                len = lpfc_idiag_drbacc_read_reg(phba,
2870                                                 pbuffer, len, drb_reg_id);
2871
2872        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
2873}
2874
2875/**
2876 * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc commands
2877 * @file: The file pointer to read from.
2878 * @buf: The buffer to copy the user data from.
2879 * @nbytes: The number of bytes to get.
2880 * @ppos: The position in the file to start reading from.
2881 *
2882 * This routine get the debugfs idiag command struct from user space and then
2883 * perform the syntax check for port doorbell register read (dump) or write
2884 * (set) command accordingly. In the case of port queue read command, it sets
2885 * up the command in the idiag command struct for the following debugfs read
2886 * operation. In the case of port doorbell register write operation, it
2887 * executes the write operation into the port doorbell register accordingly.
2888 *
2889 * It returns the @nbytges passing in from debugfs user space when successful.
2890 * In case of error conditions, it returns proper error code back to the user
2891 * space.
2892 **/
2893static ssize_t
2894lpfc_idiag_drbacc_write(struct file *file, const char __user *buf,
2895                        size_t nbytes, loff_t *ppos)
2896{
2897        struct lpfc_debug *debug = file->private_data;
2898        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
2899        uint32_t drb_reg_id, value, reg_val = 0;
2900        void __iomem *drb_reg;
2901        int rc;
2902
2903        /* This is a user write operation */
2904        debug->op = LPFC_IDIAG_OP_WR;
2905
2906        rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
2907        if (rc < 0)
2908                return rc;
2909
2910        /* Sanity check on command line arguments */
2911        drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX];
2912        value = idiag.cmd.data[IDIAG_DRBACC_VALUE_INDX];
2913
2914        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
2915            idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
2916            idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2917                if (rc != LPFC_DRB_ACC_WR_CMD_ARG)
2918                        goto error_out;
2919                if (drb_reg_id > LPFC_DRB_MAX)
2920                        goto error_out;
2921        } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) {
2922                if (rc != LPFC_DRB_ACC_RD_CMD_ARG)
2923                        goto error_out;
2924                if ((drb_reg_id > LPFC_DRB_MAX) &&
2925                    (drb_reg_id != LPFC_DRB_ACC_ALL))
2926                        goto error_out;
2927        } else
2928                goto error_out;
2929
2930        /* Perform the write access operation */
2931        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
2932            idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
2933            idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2934                switch (drb_reg_id) {
2935                case LPFC_DRB_EQCQ:
2936                        drb_reg = phba->sli4_hba.EQCQDBregaddr;
2937                        break;
2938                case LPFC_DRB_MQ:
2939                        drb_reg = phba->sli4_hba.MQDBregaddr;
2940                        break;
2941                case LPFC_DRB_WQ:
2942                        drb_reg = phba->sli4_hba.WQDBregaddr;
2943                        break;
2944                case LPFC_DRB_RQ:
2945                        drb_reg = phba->sli4_hba.RQDBregaddr;
2946                        break;
2947                default:
2948                        goto error_out;
2949                }
2950
2951                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR)
2952                        reg_val = value;
2953                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) {
2954                        reg_val = readl(drb_reg);
2955                        reg_val |= value;
2956                }
2957                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
2958                        reg_val = readl(drb_reg);
2959                        reg_val &= ~value;
2960                }
2961                writel(reg_val, drb_reg);
2962                readl(drb_reg); /* flush */
2963        }
2964        return nbytes;
2965
2966error_out:
2967        /* Clean out command structure on command error out */
2968        memset(&idiag, 0, sizeof(idiag));
2969        return -EINVAL;
2970}
2971
2972/**
2973 * lpfc_idiag_ctlacc_read_reg - idiag debugfs read a control registers
2974 * @phba: The pointer to hba structure.
2975 * @pbuffer: The pointer to the buffer to copy the data to.
2976 * @len: The lenght of bytes to copied.
2977 * @drbregid: The id to doorbell registers.
2978 *
2979 * Description:
2980 * This routine reads a control register and copies its content to the
2981 * user buffer pointed to by @pbuffer.
2982 *
2983 * Returns:
2984 * This function returns the amount of data that was copied into @pbuffer.
2985 **/
2986static int
2987lpfc_idiag_ctlacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
2988                           int len, uint32_t ctlregid)
2989{
2990
2991        if (!pbuffer)
2992                return 0;
2993
2994        switch (ctlregid) {
2995        case LPFC_CTL_PORT_SEM:
2996                len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
2997                                "Port SemReg:   0x%08x\n",
2998                                readl(phba->sli4_hba.conf_regs_memmap_p +
2999                                      LPFC_CTL_PORT_SEM_OFFSET));
3000                break;
3001        case LPFC_CTL_PORT_STA:
3002                len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
3003                                "Port StaReg:   0x%08x\n",
3004                                readl(phba->sli4_hba.conf_regs_memmap_p +
3005                                      LPFC_CTL_PORT_STA_OFFSET));
3006                break;
3007        case LPFC_CTL_PORT_CTL:
3008                len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
3009                                "Port CtlReg:   0x%08x\n",
3010                                readl(phba->sli4_hba.conf_regs_memmap_p +
3011                                      LPFC_CTL_PORT_CTL_OFFSET));
3012                break;
3013        case LPFC_CTL_PORT_ER1:
3014                len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
3015                                "Port Er1Reg:   0x%08x\n",
3016                                readl(phba->sli4_hba.conf_regs_memmap_p +
3017                                      LPFC_CTL_PORT_ER1_OFFSET));
3018                break;
3019        case LPFC_CTL_PORT_ER2:
3020                len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
3021                                "Port Er2Reg:   0x%08x\n",
3022                                readl(phba->sli4_hba.conf_regs_memmap_p +
3023                                      LPFC_CTL_PORT_ER2_OFFSET));
3024                break;
3025        case LPFC_CTL_PDEV_CTL:
3026                len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
3027                                "PDev CtlReg:   0x%08x\n",
3028                                readl(phba->sli4_hba.conf_regs_memmap_p +
3029                                      LPFC_CTL_PDEV_CTL_OFFSET));
3030                break;
3031        default:
3032                break;
3033        }
3034        return len;
3035}
3036
3037/**
3038 * lpfc_idiag_ctlacc_read - idiag debugfs read port and device control register
3039 * @file: The file pointer to read from.
3040 * @buf: The buffer to copy the data to.
3041 * @nbytes: The number of bytes to read.
3042 * @ppos: The position in the file to start reading from.
3043 *
3044 * Description:
3045 * This routine reads data from the @phba port and device registers according
3046 * to the idiag command, and copies to user @buf.
3047 *
3048 * Returns:
3049 * This function returns the amount of data that was read (this could be less
3050 * than @nbytes if the end of the file was reached) or a negative error value.
3051 **/
3052static ssize_t
3053lpfc_idiag_ctlacc_read(struct file *file, char __user *buf, size_t nbytes,
3054                       loff_t *ppos)
3055{
3056        struct lpfc_debug *debug = file->private_data;
3057        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
3058        uint32_t ctl_reg_id, i;
3059        char *pbuffer;
3060        int len = 0;
3061
3062        /* This is a user read operation */
3063        debug->op = LPFC_IDIAG_OP_RD;
3064
3065        if (!debug->buffer)
3066                debug->buffer = kmalloc(LPFC_CTL_ACC_BUF_SIZE, GFP_KERNEL);
3067        if (!debug->buffer)
3068                return 0;
3069        pbuffer = debug->buffer;
3070
3071        if (*ppos)
3072                return 0;
3073
3074        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD)
3075                ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
3076        else
3077                return 0;
3078
3079        if (ctl_reg_id == LPFC_CTL_ACC_ALL)
3080                for (i = 1; i <= LPFC_CTL_MAX; i++)
3081                        len = lpfc_idiag_ctlacc_read_reg(phba,
3082                                                         pbuffer, len, i);
3083        else
3084                len = lpfc_idiag_ctlacc_read_reg(phba,
3085                                                 pbuffer, len, ctl_reg_id);
3086
3087        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
3088}
3089
3090/**
3091 * lpfc_idiag_ctlacc_write - Syntax check and set up idiag ctlacc commands
3092 * @file: The file pointer to read from.
3093 * @buf: The buffer to copy the user data from.
3094 * @nbytes: The number of bytes to get.
3095 * @ppos: The position in the file to start reading from.
3096 *
3097 * This routine get the debugfs idiag command struct from user space and then
3098 * perform the syntax check for port and device control register read (dump)
3099 * or write (set) command accordingly.
3100 *
3101 * It returns the @nbytges passing in from debugfs user space when successful.
3102 * In case of error conditions, it returns proper error code back to the user
3103 * space.
3104 **/
3105static ssize_t
3106lpfc_idiag_ctlacc_write(struct file *file, const char __user *buf,
3107                        size_t nbytes, loff_t *ppos)
3108{
3109        struct lpfc_debug *debug = file->private_data;
3110        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
3111        uint32_t ctl_reg_id, value, reg_val = 0;
3112        void __iomem *ctl_reg;
3113        int rc;
3114
3115        /* This is a user write operation */
3116        debug->op = LPFC_IDIAG_OP_WR;
3117
3118        rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
3119        if (rc < 0)
3120                return rc;
3121
3122        /* Sanity check on command line arguments */
3123        ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
3124        value = idiag.cmd.data[IDIAG_CTLACC_VALUE_INDX];
3125
3126        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
3127            idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
3128            idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
3129                if (rc != LPFC_CTL_ACC_WR_CMD_ARG)
3130                        goto error_out;
3131                if (ctl_reg_id > LPFC_CTL_MAX)
3132                        goto error_out;
3133        } else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD) {
3134                if (rc != LPFC_CTL_ACC_RD_CMD_ARG)
3135                        goto error_out;
3136                if ((ctl_reg_id > LPFC_CTL_MAX) &&
3137                    (ctl_reg_id != LPFC_CTL_ACC_ALL))
3138                        goto error_out;
3139        } else
3140                goto error_out;
3141
3142        /* Perform the write access operation */
3143        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
3144            idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
3145            idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
3146                switch (ctl_reg_id) {
3147                case LPFC_CTL_PORT_SEM:
3148                        ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3149                                        LPFC_CTL_PORT_SEM_OFFSET;
3150                        break;
3151                case LPFC_CTL_PORT_STA:
3152                        ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3153                                        LPFC_CTL_PORT_STA_OFFSET;
3154                        break;
3155                case LPFC_CTL_PORT_CTL:
3156                        ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3157                                        LPFC_CTL_PORT_CTL_OFFSET;
3158                        break;
3159                case LPFC_CTL_PORT_ER1:
3160                        ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3161                                        LPFC_CTL_PORT_ER1_OFFSET;
3162                        break;
3163                case LPFC_CTL_PORT_ER2:
3164                        ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3165                                        LPFC_CTL_PORT_ER2_OFFSET;
3166                        break;
3167                case LPFC_CTL_PDEV_CTL:
3168                        ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
3169                                        LPFC_CTL_PDEV_CTL_OFFSET;
3170                        break;
3171                default:
3172                        goto error_out;
3173                }
3174
3175                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR)
3176                        reg_val = value;
3177                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST) {
3178                        reg_val = readl(ctl_reg);
3179                        reg_val |= value;
3180                }
3181                if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
3182                        reg_val = readl(ctl_reg);
3183                        reg_val &= ~value;
3184                }
3185                writel(reg_val, ctl_reg);
3186                readl(ctl_reg); /* flush */
3187        }
3188        return nbytes;
3189
3190error_out:
3191        /* Clean out command structure on command error out */
3192        memset(&idiag, 0, sizeof(idiag));
3193        return -EINVAL;
3194}
3195
3196/**
3197 * lpfc_idiag_mbxacc_get_setup - idiag debugfs get mailbox access setup
3198 * @phba: Pointer to HBA context object.
3199 * @pbuffer: Pointer to data buffer.
3200 *
3201 * Description:
3202 * This routine gets the driver mailbox access debugfs setup information.
3203 *
3204 * Returns:
3205 * This function returns the amount of data that was read (this could be less
3206 * than @nbytes if the end of the file was reached) or a negative error value.
3207 **/
3208static int
3209lpfc_idiag_mbxacc_get_setup(struct lpfc_hba *phba, char *pbuffer)
3210{
3211        uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
3212        int len = 0;
3213
3214        mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3215        mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3216        mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3217        mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3218
3219        len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3220                        "mbx_dump_map: 0x%08x\n", mbx_dump_map);
3221        len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3222                        "mbx_dump_cnt: %04d\n", mbx_dump_cnt);
3223        len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3224                        "mbx_word_cnt: %04d\n", mbx_word_cnt);
3225        len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
3226                        "mbx_mbox_cmd: 0x%02x\n", mbx_mbox_cmd);
3227
3228        return len;
3229}
3230
3231/**
3232 * lpfc_idiag_mbxacc_read - idiag debugfs read on mailbox access
3233 * @file: The file pointer to read from.
3234 * @buf: The buffer to copy the data to.
3235 * @nbytes: The number of bytes to read.
3236 * @ppos: The position in the file to start reading from.
3237 *
3238 * Description:
3239 * This routine reads data from the @phba driver mailbox access debugfs setup
3240 * information.
3241 *
3242 * Returns:
3243 * This function returns the amount of data that was read (this could be less
3244 * than @nbytes if the end of the file was reached) or a negative error value.
3245 **/
3246static ssize_t
3247lpfc_idiag_mbxacc_read(struct file *file, char __user *buf, size_t nbytes,
3248                       loff_t *ppos)
3249{
3250        struct lpfc_debug *debug = file->private_data;
3251        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
3252        char *pbuffer;
3253        int len = 0;
3254
3255        /* This is a user read operation */
3256        debug->op = LPFC_IDIAG_OP_RD;
3257
3258        if (!debug->buffer)
3259                debug->buffer = kmalloc(LPFC_MBX_ACC_BUF_SIZE, GFP_KERNEL);
3260        if (!debug->buffer)
3261                return 0;
3262        pbuffer = debug->buffer;
3263
3264        if (*ppos)
3265                return 0;
3266
3267        if ((idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP) &&
3268            (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP))
3269                return 0;
3270
3271        len = lpfc_idiag_mbxacc_get_setup(phba, pbuffer);
3272
3273        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
3274}
3275
3276/**
3277 * lpfc_idiag_mbxacc_write - Syntax check and set up idiag mbxacc commands
3278 * @file: The file pointer to read from.
3279 * @buf: The buffer to copy the user data from.
3280 * @nbytes: The number of bytes to get.
3281 * @ppos: The position in the file to start reading from.
3282 *
3283 * This routine get the debugfs idiag command struct from user space and then
3284 * perform the syntax check for driver mailbox command (dump) and sets up the
3285 * necessary states in the idiag command struct accordingly.
3286 *
3287 * It returns the @nbytges passing in from debugfs user space when successful.
3288 * In case of error conditions, it returns proper error code back to the user
3289 * space.
3290 **/
3291static ssize_t
3292lpfc_idiag_mbxacc_write(struct file *file, const char __user *buf,
3293                        size_t nbytes, loff_t *ppos)
3294{
3295        struct lpfc_debug *debug = file->private_data;
3296        uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
3297        int rc;
3298
3299        /* This is a user write operation */
3300        debug->op = LPFC_IDIAG_OP_WR;
3301
3302        rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
3303        if (rc < 0)
3304                return rc;
3305
3306        /* Sanity check on command line arguments */
3307        mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3308        mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3309        mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3310        mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3311
3312        if (idiag.cmd.opcode == LPFC_IDIAG_CMD_MBXACC_DP) {
3313                if (!(mbx_dump_map & LPFC_MBX_DMP_MBX_ALL))
3314                        goto error_out;
3315                if ((mbx_dump_map & ~LPFC_MBX_DMP_MBX_ALL) &&
3316                    (mbx_dump_map != LPFC_MBX_DMP_ALL))
3317                        goto error_out;
3318                if (mbx_word_cnt > sizeof(MAILBOX_t))
3319                        goto error_out;
3320        } else if (idiag.cmd.opcode == LPFC_IDIAG_BSG_MBXACC_DP) {
3321                if (!(mbx_dump_map & LPFC_BSG_DMP_MBX_ALL))
3322                        goto error_out;
3323                if ((mbx_dump_map & ~LPFC_BSG_DMP_MBX_ALL) &&
3324                    (mbx_dump_map != LPFC_MBX_DMP_ALL))
3325                        goto error_out;
3326                if (mbx_word_cnt > (BSG_MBOX_SIZE)/4)
3327                        goto error_out;
3328                if (mbx_mbox_cmd != 0x9b)
3329                        goto error_out;
3330        } else
3331                goto error_out;
3332
3333        if (mbx_word_cnt == 0)
3334                goto error_out;
3335        if (rc != LPFC_MBX_DMP_ARG)
3336                goto error_out;
3337        if (mbx_mbox_cmd & ~0xff)
3338                goto error_out;
3339
3340        /* condition for stop mailbox dump */
3341        if (mbx_dump_cnt == 0)
3342                goto reset_out;
3343
3344        return nbytes;
3345
3346reset_out:
3347        /* Clean out command structure on command error out */
3348        memset(&idiag, 0, sizeof(idiag));
3349        return nbytes;
3350
3351error_out:
3352        /* Clean out command structure on command error out */
3353        memset(&idiag, 0, sizeof(idiag));
3354        return -EINVAL;
3355}
3356
3357/**
3358 * lpfc_idiag_extacc_avail_get - get the available extents information
3359 * @phba: pointer to lpfc hba data structure.
3360 * @pbuffer: pointer to internal buffer.
3361 * @len: length into the internal buffer data has been copied.
3362 *
3363 * Description:
3364 * This routine is to get the available extent information.
3365 *
3366 * Returns:
3367 * overall lenth of the data read into the internal buffer.
3368 **/
3369static int
3370lpfc_idiag_extacc_avail_get(struct lpfc_hba *phba, char *pbuffer, int len)
3371{
3372        uint16_t ext_cnt, ext_size;
3373
3374        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3375                        "\nAvailable Extents Information:\n");
3376
3377        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3378                        "\tPort Available VPI extents: ");
3379        lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VPI,
3380                                       &ext_cnt, &ext_size);
3381        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3382                        "Count %3d, Size %3d\n", ext_cnt, ext_size);
3383
3384        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3385                        "\tPort Available VFI extents: ");
3386        lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VFI,
3387                                       &ext_cnt, &ext_size);
3388        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3389                        "Count %3d, Size %3d\n", ext_cnt, ext_size);
3390
3391        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3392                        "\tPort Available RPI extents: ");
3393        lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_RPI,
3394                                       &ext_cnt, &ext_size);
3395        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3396                        "Count %3d, Size %3d\n", ext_cnt, ext_size);
3397
3398        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3399                        "\tPort Available XRI extents: ");
3400        lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_XRI,
3401                                       &ext_cnt, &ext_size);
3402        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3403                        "Count %3d, Size %3d\n", ext_cnt, ext_size);
3404
3405        return len;
3406}
3407
3408/**
3409 * lpfc_idiag_extacc_alloc_get - get the allocated extents information
3410 * @phba: pointer to lpfc hba data structure.
3411 * @pbuffer: pointer to internal buffer.
3412 * @len: length into the internal buffer data has been copied.
3413 *
3414 * Description:
3415 * This routine is to get the allocated extent information.
3416 *
3417 * Returns:
3418 * overall lenth of the data read into the internal buffer.
3419 **/
3420static int
3421lpfc_idiag_extacc_alloc_get(struct lpfc_hba *phba, char *pbuffer, int len)
3422{
3423        uint16_t ext_cnt, ext_size;
3424        int rc;
3425
3426        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3427                        "\nAllocated Extents Information:\n");
3428
3429        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3430                        "\tHost Allocated VPI extents: ");
3431        rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VPI,
3432                                            &ext_cnt, &ext_size);
3433        if (!rc)
3434                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3435                                "Port %d Extent %3d, Size %3d\n",
3436                                phba->brd_no, ext_cnt, ext_size);
3437        else
3438                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3439                                "N/A\n");
3440
3441        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3442                        "\tHost Allocated VFI extents: ");
3443        rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VFI,
3444                                            &ext_cnt, &ext_size);
3445        if (!rc)
3446                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3447                                "Port %d Extent %3d, Size %3d\n",
3448                                phba->brd_no, ext_cnt, ext_size);
3449        else
3450                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3451                                "N/A\n");
3452
3453        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3454                        "\tHost Allocated RPI extents: ");
3455        rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_RPI,
3456                                            &ext_cnt, &ext_size);
3457        if (!rc)
3458                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3459                                "Port %d Extent %3d, Size %3d\n",
3460                                phba->brd_no, ext_cnt, ext_size);
3461        else
3462                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3463                                "N/A\n");
3464
3465        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3466                        "\tHost Allocated XRI extents: ");
3467        rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_XRI,
3468                                            &ext_cnt, &ext_size);
3469        if (!rc)
3470                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3471                                "Port %d Extent %3d, Size %3d\n",
3472                                phba->brd_no, ext_cnt, ext_size);
3473        else
3474                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3475                                "N/A\n");
3476
3477        return len;
3478}
3479
3480/**
3481 * lpfc_idiag_extacc_drivr_get - get driver extent information
3482 * @phba: pointer to lpfc hba data structure.
3483 * @pbuffer: pointer to internal buffer.
3484 * @len: length into the internal buffer data has been copied.
3485 *
3486 * Description:
3487 * This routine is to get the driver extent information.
3488 *
3489 * Returns:
3490 * overall lenth of the data read into the internal buffer.
3491 **/
3492static int
3493lpfc_idiag_extacc_drivr_get(struct lpfc_hba *phba, char *pbuffer, int len)
3494{
3495        struct lpfc_rsrc_blks *rsrc_blks;
3496        int index;
3497
3498        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3499                        "\nDriver Extents Information:\n");
3500
3501        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3502                        "\tVPI extents:\n");
3503        index = 0;
3504        list_for_each_entry(rsrc_blks, &phba->lpfc_vpi_blk_list, list) {
3505                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3506                                "\t\tBlock %3d: Start %4d, Count %4d\n",
3507                                index, rsrc_blks->rsrc_start,
3508                                rsrc_blks->rsrc_size);
3509                index++;
3510        }
3511        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3512                        "\tVFI extents:\n");
3513        index = 0;
3514        list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_vfi_blk_list,
3515                            list) {
3516                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3517                                "\t\tBlock %3d: Start %4d, Count %4d\n",
3518                                index, rsrc_blks->rsrc_start,
3519                                rsrc_blks->rsrc_size);
3520                index++;
3521        }
3522
3523        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3524                        "\tRPI extents:\n");
3525        index = 0;
3526        list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_rpi_blk_list,
3527                            list) {
3528                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3529                                "\t\tBlock %3d: Start %4d, Count %4d\n",
3530                                index, rsrc_blks->rsrc_start,
3531                                rsrc_blks->rsrc_size);
3532                index++;
3533        }
3534
3535        len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3536                        "\tXRI extents:\n");
3537        index = 0;
3538        list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_xri_blk_list,
3539                            list) {
3540                len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
3541                                "\t\tBlock %3d: Start %4d, Count %4d\n",
3542                                index, rsrc_blks->rsrc_start,
3543                                rsrc_blks->rsrc_size);
3544                index++;
3545        }
3546
3547        return len;
3548}
3549
3550/**
3551 * lpfc_idiag_extacc_write - Syntax check and set up idiag extacc commands
3552 * @file: The file pointer to read from.
3553 * @buf: The buffer to copy the user data from.
3554 * @nbytes: The number of bytes to get.
3555 * @ppos: The position in the file to start reading from.
3556 *
3557 * This routine get the debugfs idiag command struct from user space and then
3558 * perform the syntax check for extent information access commands and sets
3559 * up the necessary states in the idiag command struct accordingly.
3560 *
3561 * It returns the @nbytges passing in from debugfs user space when successful.
3562 * In case of error conditions, it returns proper error code back to the user
3563 * space.
3564 **/
3565static ssize_t
3566lpfc_idiag_extacc_write(struct file *file, const char __user *buf,
3567                        size_t nbytes, loff_t *ppos)
3568{
3569        struct lpfc_debug *debug = file->private_data;
3570        uint32_t ext_map;
3571        int rc;
3572
3573        /* This is a user write operation */
3574        debug->op = LPFC_IDIAG_OP_WR;
3575
3576        rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
3577        if (rc < 0)
3578                return rc;
3579
3580        ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];
3581
3582        if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
3583                goto error_out;
3584        if (rc != LPFC_EXT_ACC_CMD_ARG)
3585                goto error_out;
3586        if (!(ext_map & LPFC_EXT_ACC_ALL))
3587                goto error_out;
3588
3589        return nbytes;
3590error_out:
3591        /* Clean out command structure on command error out */
3592        memset(&idiag, 0, sizeof(idiag));
3593        return -EINVAL;
3594}
3595
3596/**
3597 * lpfc_idiag_extacc_read - idiag debugfs read access to extent information
3598 * @file: The file pointer to read from.
3599 * @buf: The buffer to copy the data to.
3600 * @nbytes: The number of bytes to read.
3601 * @ppos: The position in the file to start reading from.
3602 *
3603 * Description:
3604 * This routine reads data from the proper extent information according to
3605 * the idiag command, and copies to user @buf.
3606 *
3607 * Returns:
3608 * This function returns the amount of data that was read (this could be less
3609 * than @nbytes if the end of the file was reached) or a negative error value.
3610 **/
3611static ssize_t
3612lpfc_idiag_extacc_read(struct file *file, char __user *buf, size_t nbytes,
3613                       loff_t *ppos)
3614{
3615        struct lpfc_debug *debug = file->private_data;
3616        struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
3617        char *pbuffer;
3618        uint32_t ext_map;
3619        int len = 0;
3620
3621        /* This is a user read operation */
3622        debug->op = LPFC_IDIAG_OP_RD;
3623
3624        if (!debug->buffer)
3625                debug->buffer = kmalloc(LPFC_EXT_ACC_BUF_SIZE, GFP_KERNEL);
3626        if (!debug->buffer)
3627                return 0;
3628        pbuffer = debug->buffer;
3629        if (*ppos)
3630                return 0;
3631        if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
3632                return 0;
3633
3634        ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];
3635        if (ext_map & LPFC_EXT_ACC_AVAIL)
3636                len = lpfc_idiag_extacc_avail_get(phba, pbuffer, len);
3637        if (ext_map & LPFC_EXT_ACC_ALLOC)
3638                len = lpfc_idiag_extacc_alloc_get(phba, pbuffer, len);
3639        if (ext_map & LPFC_EXT_ACC_DRIVR)
3640                len = lpfc_idiag_extacc_drivr_get(phba, pbuffer, len);
3641
3642        return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
3643}
3644
3645#undef lpfc_debugfs_op_disc_trc
3646static const struct file_operations lpfc_debugfs_op_disc_trc = {
3647        .owner =        THIS_MODULE,
3648        .open =         lpfc_debugfs_disc_trc_open,
3649        .llseek =       lpfc_debugfs_lseek,
3650        .read =         lpfc_debugfs_read,
3651        .release =      lpfc_debugfs_release,
3652};
3653
3654#undef lpfc_debugfs_op_nodelist
3655static const struct file_operations lpfc_debugfs_op_nodelist = {
3656        .owner =        THIS_MODULE,
3657        .open =         lpfc_debugfs_nodelist_open,
3658        .llseek =       lpfc_debugfs_lseek,
3659        .read =         lpfc_debugfs_read,
3660        .release =      lpfc_debugfs_release,
3661};
3662
3663#undef lpfc_debugfs_op_hbqinfo
3664static const struct file_operations lpfc_debugfs_op_hbqinfo = {
3665        .owner =        THIS_MODULE,
3666        .open =         lpfc_debugfs_hbqinfo_open,
3667        .llseek =       lpfc_debugfs_lseek,
3668        .read =         lpfc_debugfs_read,
3669        .release =      lpfc_debugfs_release,
3670};
3671
3672#undef lpfc_debugfs_op_dumpHBASlim
3673static const struct file_operations lpfc_debugfs_op_dumpHBASlim = {
3674        .owner =        THIS_MODULE,
3675        .open =         lpfc_debugfs_dumpHBASlim_open,
3676        .llseek =       lpfc_debugfs_lseek,
3677        .read =         lpfc_debugfs_read,
3678        .release =      lpfc_debugfs_release,
3679};
3680
3681#undef lpfc_debugfs_op_dumpHostSlim
3682static const struct file_operations lpfc_debugfs_op_dumpHostSlim = {
3683        .owner =        THIS_MODULE,
3684        .open =         lpfc_debugfs_dumpHostSlim_open,
3685        .llseek =       lpfc_debugfs_lseek,
3686        .read =         lpfc_debugfs_read,
3687        .release =      lpfc_debugfs_release,
3688};
3689
3690#undef lpfc_debugfs_op_dumpData
3691static const struct file_operations lpfc_debugfs_op_dumpData = {
3692        .owner =        THIS_MODULE,
3693        .open =         lpfc_debugfs_dumpData_open,
3694        .llseek =       lpfc_debugfs_lseek,
3695        .read =         lpfc_debugfs_read,
3696        .write =        lpfc_debugfs_dumpDataDif_write,
3697        .release =      lpfc_debugfs_dumpDataDif_release,
3698};
3699
3700#undef lpfc_debugfs_op_dumpDif
3701static const struct file_operations lpfc_debugfs_op_dumpDif = {
3702        .owner =        THIS_MODULE,
3703        .open =         lpfc_debugfs_dumpDif_open,
3704        .llseek =       lpfc_debugfs_lseek,
3705        .read =         lpfc_debugfs_read,
3706        .write =        lpfc_debugfs_dumpDataDif_write,
3707        .release =      lpfc_debugfs_dumpDataDif_release,
3708};
3709
3710#undef lpfc_debugfs_op_dif_err
3711static const struct file_operations lpfc_debugfs_op_dif_err = {
3712        .owner =        THIS_MODULE,
3713        .open =         simple_open,
3714        .llseek =       lpfc_debugfs_lseek,
3715        .read =         lpfc_debugfs_dif_err_read,
3716        .write =        lpfc_debugfs_dif_err_write,
3717        .release =      lpfc_debugfs_dif_err_release,
3718};
3719
3720#undef lpfc_debugfs_op_slow_ring_trc
3721static const struct file_operations lpfc_debugfs_op_slow_ring_trc = {
3722        .owner =        THIS_MODULE,
3723        .open =         lpfc_debugfs_slow_ring_trc_open,
3724        .llseek =       lpfc_debugfs_lseek,
3725        .read =         lpfc_debugfs_read,
3726        .release =      lpfc_debugfs_release,
3727};
3728
3729static struct dentry *lpfc_debugfs_root = NULL;
3730static atomic_t lpfc_debugfs_hba_count;
3731
3732/*
3733 * File operations for the iDiag debugfs
3734 */
3735#undef lpfc_idiag_op_pciCfg
3736static const struct file_operations lpfc_idiag_op_pciCfg = {
3737        .owner =        THIS_MODULE,
3738        .open =         lpfc_idiag_open,
3739        .llseek =       lpfc_debugfs_lseek,
3740        .read =         lpfc_idiag_pcicfg_read,
3741        .write =        lpfc_idiag_pcicfg_write,
3742        .release =      lpfc_idiag_cmd_release,
3743};
3744
3745#undef lpfc_idiag_op_barAcc
3746static const struct file_operations lpfc_idiag_op_barAcc = {
3747        .owner =        THIS_MODULE,
3748        .open =         lpfc_idiag_open,
3749        .llseek =       lpfc_debugfs_lseek,
3750        .read =         lpfc_idiag_baracc_read,
3751        .write =        lpfc_idiag_baracc_write,
3752        .release =      lpfc_idiag_cmd_release,
3753};
3754
3755#undef lpfc_idiag_op_queInfo
3756static const struct file_operations lpfc_idiag_op_queInfo = {
3757        .owner =        THIS_MODULE,
3758        .open =         lpfc_idiag_open,
3759        .read =         lpfc_idiag_queinfo_read,
3760        .release =      lpfc_idiag_release,
3761};
3762
3763#undef lpfc_idiag_op_queAcc
3764static const struct file_operations lpfc_idiag_op_queAcc = {
3765        .owner =        THIS_MODULE,
3766        .open =         lpfc_idiag_open,
3767        .llseek =       lpfc_debugfs_lseek,
3768        .read =         lpfc_idiag_queacc_read,
3769        .write =        lpfc_idiag_queacc_write,
3770        .release =      lpfc_idiag_cmd_release,
3771};
3772
3773#undef lpfc_idiag_op_drbAcc
3774static const struct file_operations lpfc_idiag_op_drbAcc = {
3775        .owner =        THIS_MODULE,
3776        .open =         lpfc_idiag_open,
3777        .llseek =       lpfc_debugfs_lseek,
3778        .read =         lpfc_idiag_drbacc_read,
3779        .write =        lpfc_idiag_drbacc_write,
3780        .release =      lpfc_idiag_cmd_release,
3781};
3782
3783#undef lpfc_idiag_op_ctlAcc
3784static const struct file_operations lpfc_idiag_op_ctlAcc = {
3785        .owner =        THIS_MODULE,
3786        .open =         lpfc_idiag_open,
3787        .llseek =       lpfc_debugfs_lseek,
3788        .read =         lpfc_idiag_ctlacc_read,
3789        .write =        lpfc_idiag_ctlacc_write,
3790        .release =      lpfc_idiag_cmd_release,
3791};
3792
3793#undef lpfc_idiag_op_mbxAcc
3794static const struct file_operations lpfc_idiag_op_mbxAcc = {
3795        .owner =        THIS_MODULE,
3796        .open =         lpfc_idiag_open,
3797        .llseek =       lpfc_debugfs_lseek,
3798        .read =         lpfc_idiag_mbxacc_read,
3799        .write =        lpfc_idiag_mbxacc_write,
3800        .release =      lpfc_idiag_cmd_release,
3801};
3802
3803#undef lpfc_idiag_op_extAcc
3804static const struct file_operations lpfc_idiag_op_extAcc = {
3805        .owner =        THIS_MODULE,
3806        .open =         lpfc_idiag_open,
3807        .llseek =       lpfc_debugfs_lseek,
3808        .read =         lpfc_idiag_extacc_read,
3809        .write =        lpfc_idiag_extacc_write,
3810        .release =      lpfc_idiag_cmd_release,
3811};
3812
3813#endif
3814
3815/* lpfc_idiag_mbxacc_dump_bsg_mbox - idiag debugfs dump bsg mailbox command
3816 * @phba: Pointer to HBA context object.
3817 * @dmabuf: Pointer to a DMA buffer descriptor.
3818 *
3819 * Description:
3820 * This routine dump a bsg pass-through non-embedded mailbox command with
3821 * external buffer.
3822 **/
3823void
3824lpfc_idiag_mbxacc_dump_bsg_mbox(struct lpfc_hba *phba, enum nemb_type nemb_tp,
3825                                enum mbox_type mbox_tp, enum dma_type dma_tp,
3826                                enum sta_type sta_tp,
3827                                struct lpfc_dmabuf *dmabuf, uint32_t ext_buf)
3828{
3829#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3830        uint32_t *mbx_mbox_cmd, *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt;
3831        char line_buf[LPFC_MBX_ACC_LBUF_SZ];
3832        int len = 0;
3833        uint32_t do_dump = 0;
3834        uint32_t *pword;
3835        uint32_t i;
3836
3837        if (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP)
3838                return;
3839
3840        mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3841        mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3842        mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3843        mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3844
3845        if (!(*mbx_dump_map & LPFC_MBX_DMP_ALL) ||
3846            (*mbx_dump_cnt == 0) ||
3847            (*mbx_word_cnt == 0))
3848                return;
3849
3850        if (*mbx_mbox_cmd != 0x9B)
3851                return;
3852
3853        if ((mbox_tp == mbox_rd) && (dma_tp == dma_mbox)) {
3854                if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_MBX) {
3855                        do_dump |= LPFC_BSG_DMP_MBX_RD_MBX;
3856                        printk(KERN_ERR "\nRead mbox command (x%x), "
3857                               "nemb:0x%x, extbuf_cnt:%d:\n",
3858                               sta_tp, nemb_tp, ext_buf);
3859                }
3860        }
3861        if ((mbox_tp == mbox_rd) && (dma_tp == dma_ebuf)) {
3862                if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_BUF) {
3863                        do_dump |= LPFC_BSG_DMP_MBX_RD_BUF;
3864                        printk(KERN_ERR "\nRead mbox buffer (x%x), "
3865                               "nemb:0x%x, extbuf_seq:%d:\n",
3866                               sta_tp, nemb_tp, ext_buf);
3867                }
3868        }
3869        if ((mbox_tp == mbox_wr) && (dma_tp == dma_mbox)) {
3870                if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_MBX) {
3871                        do_dump |= LPFC_BSG_DMP_MBX_WR_MBX;
3872                        printk(KERN_ERR "\nWrite mbox command (x%x), "
3873                               "nemb:0x%x, extbuf_cnt:%d:\n",
3874                               sta_tp, nemb_tp, ext_buf);
3875                }
3876        }
3877        if ((mbox_tp == mbox_wr) && (dma_tp == dma_ebuf)) {
3878                if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_BUF) {
3879                        do_dump |= LPFC_BSG_DMP_MBX_WR_BUF;
3880                        printk(KERN_ERR "\nWrite mbox buffer (x%x), "
3881                               "nemb:0x%x, extbuf_seq:%d:\n",
3882                               sta_tp, nemb_tp, ext_buf);
3883                }
3884        }
3885
3886        /* dump buffer content */
3887        if (do_dump) {
3888                pword = (uint32_t *)dmabuf->virt;
3889                for (i = 0; i < *mbx_word_cnt; i++) {
3890                        if (!(i % 8)) {
3891                                if (i != 0)
3892                                        printk(KERN_ERR "%s\n", line_buf);
3893                                len = 0;
3894                                len += snprintf(line_buf+len,
3895                                                LPFC_MBX_ACC_LBUF_SZ-len,
3896                                                "%03d: ", i);
3897                        }
3898                        len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
3899                                        "%08x ", (uint32_t)*pword);
3900                        pword++;
3901                }
3902                if ((i - 1) % 8)
3903                        printk(KERN_ERR "%s\n", line_buf);
3904                (*mbx_dump_cnt)--;
3905        }
3906
3907        /* Clean out command structure on reaching dump count */
3908        if (*mbx_dump_cnt == 0)
3909                memset(&idiag, 0, sizeof(idiag));
3910        return;
3911#endif
3912}
3913
3914/* lpfc_idiag_mbxacc_dump_issue_mbox - idiag debugfs dump issue mailbox command
3915 * @phba: Pointer to HBA context object.
3916 * @dmabuf: Pointer to a DMA buffer descriptor.
3917 *
3918 * Description:
3919 * This routine dump a pass-through non-embedded mailbox command from issue
3920 * mailbox command.
3921 **/
3922void
3923lpfc_idiag_mbxacc_dump_issue_mbox(struct lpfc_hba *phba, MAILBOX_t *pmbox)
3924{
3925#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
3926        uint32_t *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt, *mbx_mbox_cmd;
3927        char line_buf[LPFC_MBX_ACC_LBUF_SZ];
3928        int len = 0;
3929        uint32_t *pword;
3930        uint8_t *pbyte;
3931        uint32_t i, j;
3932
3933        if (idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP)
3934                return;
3935
3936        mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
3937        mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
3938        mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
3939        mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];
3940
3941        if (!(*mbx_dump_map & LPFC_MBX_DMP_MBX_ALL) ||
3942            (*mbx_dump_cnt == 0) ||
3943            (*mbx_word_cnt == 0))
3944                return;
3945
3946        if ((*mbx_mbox_cmd != LPFC_MBX_ALL_CMD) &&
3947            (*mbx_mbox_cmd != pmbox->mbxCommand))
3948                return;
3949
3950        /* dump buffer content */
3951        if (*mbx_dump_map & LPFC_MBX_DMP_MBX_WORD) {
3952                printk(KERN_ERR "Mailbox command:0x%x dump by word:\n",
3953                       pmbox->mbxCommand);
3954                pword = (uint32_t *)pmbox;
3955                for (i = 0; i < *mbx_word_cnt; i++) {
3956                        if (!(i % 8)) {
3957                                if (i != 0)
3958                                        printk(KERN_ERR "%s\n", line_buf);
3959                                len = 0;
3960                                memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
3961                                len += snprintf(line_buf+len,
3962                                                LPFC_MBX_ACC_LBUF_SZ-len,
3963                                                "%03d: ", i);
3964                        }
3965                        len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
3966                                        "%08x ",
3967                                        ((uint32_t)*pword) & 0xffffffff);
3968                        pword++;
3969                }
3970                if ((i - 1) % 8)
3971                        printk(KERN_ERR "%s\n", line_buf);
3972                printk(KERN_ERR "\n");
3973        }
3974        if (*mbx_dump_map & LPFC_MBX_DMP_MBX_BYTE) {
3975                printk(KERN_ERR "Mailbox command:0x%x dump by byte:\n",
3976                       pmbox->mbxCommand);
3977                pbyte = (uint8_t *)pmbox;
3978                for (i = 0; i < *mbx_word_cnt; i++) {
3979                        if (!(i % 8)) {
3980                                if (i != 0)
3981                                        printk(KERN_ERR "%s\n", line_buf);
3982                                len = 0;
3983                                memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
3984                                len += snprintf(line_buf+len,
3985                                                LPFC_MBX_ACC_LBUF_SZ-len,
3986                                                "%03d: ", i);
3987                        }
3988                        for (j = 0; j < 4; j++) {
3989                                len += snprintf(line_buf+len,
3990                                                LPFC_MBX_ACC_LBUF_SZ-len,
3991                                                "%02x",
3992                                                ((uint8_t)*pbyte) & 0xff);
3993                                pbyte++;
3994                        }
3995                        len += snprintf(line_buf+len,
3996                                        LPFC_MBX_ACC_LBUF_SZ-len, " ");
3997                }
3998                if ((i - 1) % 8)
3999                        printk(KERN_ERR "%s\n", line_buf);
4000                printk(KERN_ERR "\n");
4001        }
4002        (*mbx_dump_cnt)--;
4003
4004        /* Clean out command structure on reaching dump count */
4005        if (*mbx_dump_cnt == 0)
4006                memset(&idiag, 0, sizeof(idiag));
4007        return;
4008#endif
4009}
4010
4011/**
4012 * lpfc_debugfs_initialize - Initialize debugfs for a vport
4013 * @vport: The vport pointer to initialize.
4014 *
4015 * Description:
4016 * When Debugfs is configured this routine sets up the lpfc debugfs file system.
4017 * If not already created, this routine will create the lpfc directory, and
4018 * lpfcX directory (for this HBA), and vportX directory for this vport. It will
4019 * also create each file used to access lpfc specific debugfs information.
4020 **/
4021inline void
4022lpfc_debugfs_initialize(struct lpfc_vport *vport)
4023{
4024#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4025        struct lpfc_hba   *phba = vport->phba;
4026        char name[64];
4027        uint32_t num, i;
4028        bool pport_setup = false;
4029
4030        if (!lpfc_debugfs_enable)
4031                return;
4032
4033        /* Setup lpfc root directory */
4034        if (!lpfc_debugfs_root) {
4035                lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
4036                atomic_set(&lpfc_debugfs_hba_count, 0);
4037                if (!lpfc_debugfs_root) {
4038                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4039                                         "0408 Cannot create debugfs root\n");
4040                        goto debug_failed;
4041                }
4042        }
4043        if (!lpfc_debugfs_start_time)
4044                lpfc_debugfs_start_time = jiffies;
4045
4046        /* Setup funcX directory for specific HBA PCI function */
4047        snprintf(name, sizeof(name), "fn%d", phba->brd_no);
4048        if (!phba->hba_debugfs_root) {
4049                pport_setup = true;
4050                phba->hba_debugfs_root =
4051                        debugfs_create_dir(name, lpfc_debugfs_root);
4052                if (!phba->hba_debugfs_root) {
4053                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4054                                         "0412 Cannot create debugfs hba\n");
4055                        goto debug_failed;
4056                }
4057                atomic_inc(&lpfc_debugfs_hba_count);
4058                atomic_set(&phba->debugfs_vport_count, 0);
4059
4060                /* Setup hbqinfo */
4061                snprintf(name, sizeof(name), "hbqinfo");
4062                phba->debug_hbqinfo =
4063                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4064                                 phba->hba_debugfs_root,
4065                                 phba, &lpfc_debugfs_op_hbqinfo);
4066                if (!phba->debug_hbqinfo) {
4067                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4068                                "0411 Cannot create debugfs hbqinfo\n");
4069                        goto debug_failed;
4070                }
4071
4072                /* Setup dumpHBASlim */
4073                if (phba->sli_rev < LPFC_SLI_REV4) {
4074                        snprintf(name, sizeof(name), "dumpHBASlim");
4075                        phba->debug_dumpHBASlim =
4076                                debugfs_create_file(name,
4077                                        S_IFREG|S_IRUGO|S_IWUSR,
4078                                        phba->hba_debugfs_root,
4079                                        phba, &lpfc_debugfs_op_dumpHBASlim);
4080                        if (!phba->debug_dumpHBASlim) {
4081                                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4082                                                 "0413 Cannot create debugfs "
4083                                                "dumpHBASlim\n");
4084                                goto debug_failed;
4085                        }
4086                } else
4087                        phba->debug_dumpHBASlim = NULL;
4088
4089                /* Setup dumpHostSlim */
4090                if (phba->sli_rev < LPFC_SLI_REV4) {
4091                        snprintf(name, sizeof(name), "dumpHostSlim");
4092                        phba->debug_dumpHostSlim =
4093                                debugfs_create_file(name,
4094                                        S_IFREG|S_IRUGO|S_IWUSR,
4095                                        phba->hba_debugfs_root,
4096                                        phba, &lpfc_debugfs_op_dumpHostSlim);
4097                        if (!phba->debug_dumpHostSlim) {
4098                                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4099                                                 "0414 Cannot create debugfs "
4100                                                 "dumpHostSlim\n");
4101                                goto debug_failed;
4102                        }
4103                } else
4104                        phba->debug_dumpHostSlim = NULL;
4105
4106                /* Setup dumpData */
4107                snprintf(name, sizeof(name), "dumpData");
4108                phba->debug_dumpData =
4109                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4110                                 phba->hba_debugfs_root,
4111                                 phba, &lpfc_debugfs_op_dumpData);
4112                if (!phba->debug_dumpData) {
4113                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4114                                "0800 Cannot create debugfs dumpData\n");
4115                        goto debug_failed;
4116                }
4117
4118                /* Setup dumpDif */
4119                snprintf(name, sizeof(name), "dumpDif");
4120                phba->debug_dumpDif =
4121                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4122                                 phba->hba_debugfs_root,
4123                                 phba, &lpfc_debugfs_op_dumpDif);
4124                if (!phba->debug_dumpDif) {
4125                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4126                                "0801 Cannot create debugfs dumpDif\n");
4127                        goto debug_failed;
4128                }
4129
4130                /* Setup DIF Error Injections */
4131                snprintf(name, sizeof(name), "InjErrLBA");
4132                phba->debug_InjErrLBA =
4133                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4134                        phba->hba_debugfs_root,
4135                        phba, &lpfc_debugfs_op_dif_err);
4136                if (!phba->debug_InjErrLBA) {
4137                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4138                                "0807 Cannot create debugfs InjErrLBA\n");
4139                        goto debug_failed;
4140                }
4141                phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;
4142
4143                snprintf(name, sizeof(name), "InjErrNPortID");
4144                phba->debug_InjErrNPortID =
4145                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4146                        phba->hba_debugfs_root,
4147                        phba, &lpfc_debugfs_op_dif_err);
4148                if (!phba->debug_InjErrNPortID) {
4149                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4150                                "0809 Cannot create debugfs InjErrNPortID\n");
4151                        goto debug_failed;
4152                }
4153
4154                snprintf(name, sizeof(name), "InjErrWWPN");
4155                phba->debug_InjErrWWPN =
4156                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4157                        phba->hba_debugfs_root,
4158                        phba, &lpfc_debugfs_op_dif_err);
4159                if (!phba->debug_InjErrWWPN) {
4160                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4161                                "0810 Cannot create debugfs InjErrWWPN\n");
4162                        goto debug_failed;
4163                }
4164
4165                snprintf(name, sizeof(name), "writeGuardInjErr");
4166                phba->debug_writeGuard =
4167                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4168                        phba->hba_debugfs_root,
4169                        phba, &lpfc_debugfs_op_dif_err);
4170                if (!phba->debug_writeGuard) {
4171                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4172                                "0802 Cannot create debugfs writeGuard\n");
4173                        goto debug_failed;
4174                }
4175
4176                snprintf(name, sizeof(name), "writeAppInjErr");
4177                phba->debug_writeApp =
4178                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4179                        phba->hba_debugfs_root,
4180                        phba, &lpfc_debugfs_op_dif_err);
4181                if (!phba->debug_writeApp) {
4182                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4183                                "0803 Cannot create debugfs writeApp\n");
4184                        goto debug_failed;
4185                }
4186
4187                snprintf(name, sizeof(name), "writeRefInjErr");
4188                phba->debug_writeRef =
4189                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4190                        phba->hba_debugfs_root,
4191                        phba, &lpfc_debugfs_op_dif_err);
4192                if (!phba->debug_writeRef) {
4193                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4194                                "0804 Cannot create debugfs writeRef\n");
4195                        goto debug_failed;
4196                }
4197
4198                snprintf(name, sizeof(name), "readGuardInjErr");
4199                phba->debug_readGuard =
4200                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4201                        phba->hba_debugfs_root,
4202                        phba, &lpfc_debugfs_op_dif_err);
4203                if (!phba->debug_readGuard) {
4204                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4205                                "0808 Cannot create debugfs readGuard\n");
4206                        goto debug_failed;
4207                }
4208
4209                snprintf(name, sizeof(name), "readAppInjErr");
4210                phba->debug_readApp =
4211                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4212                        phba->hba_debugfs_root,
4213                        phba, &lpfc_debugfs_op_dif_err);
4214                if (!phba->debug_readApp) {
4215                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4216                                "0805 Cannot create debugfs readApp\n");
4217                        goto debug_failed;
4218                }
4219
4220                snprintf(name, sizeof(name), "readRefInjErr");
4221                phba->debug_readRef =
4222                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4223                        phba->hba_debugfs_root,
4224                        phba, &lpfc_debugfs_op_dif_err);
4225                if (!phba->debug_readRef) {
4226                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4227                                "0806 Cannot create debugfs readApp\n");
4228                        goto debug_failed;
4229                }
4230
4231                /* Setup slow ring trace */
4232                if (lpfc_debugfs_max_slow_ring_trc) {
4233                        num = lpfc_debugfs_max_slow_ring_trc - 1;
4234                        if (num & lpfc_debugfs_max_slow_ring_trc) {
4235                                /* Change to be a power of 2 */
4236                                num = lpfc_debugfs_max_slow_ring_trc;
4237                                i = 0;
4238                                while (num > 1) {
4239                                        num = num >> 1;
4240                                        i++;
4241                                }
4242                                lpfc_debugfs_max_slow_ring_trc = (1 << i);
4243                                printk(KERN_ERR
4244                                       "lpfc_debugfs_max_disc_trc changed to "
4245                                       "%d\n", lpfc_debugfs_max_disc_trc);
4246                        }
4247                }
4248
4249                snprintf(name, sizeof(name), "slow_ring_trace");
4250                phba->debug_slow_ring_trc =
4251                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4252                                 phba->hba_debugfs_root,
4253                                 phba, &lpfc_debugfs_op_slow_ring_trc);
4254                if (!phba->debug_slow_ring_trc) {
4255                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4256                                         "0415 Cannot create debugfs "
4257                                         "slow_ring_trace\n");
4258                        goto debug_failed;
4259                }
4260                if (!phba->slow_ring_trc) {
4261                        phba->slow_ring_trc = kmalloc(
4262                                (sizeof(struct lpfc_debugfs_trc) *
4263                                lpfc_debugfs_max_slow_ring_trc),
4264                                GFP_KERNEL);
4265                        if (!phba->slow_ring_trc) {
4266                                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4267                                                 "0416 Cannot create debugfs "
4268                                                 "slow_ring buffer\n");
4269                                goto debug_failed;
4270                        }
4271                        atomic_set(&phba->slow_ring_trc_cnt, 0);
4272                        memset(phba->slow_ring_trc, 0,
4273                                (sizeof(struct lpfc_debugfs_trc) *
4274                                lpfc_debugfs_max_slow_ring_trc));
4275                }
4276        }
4277
4278        snprintf(name, sizeof(name), "vport%d", vport->vpi);
4279        if (!vport->vport_debugfs_root) {
4280                vport->vport_debugfs_root =
4281                        debugfs_create_dir(name, phba->hba_debugfs_root);
4282                if (!vport->vport_debugfs_root) {
4283                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4284                                         "0417 Can't create debugfs\n");
4285                        goto debug_failed;
4286                }
4287                atomic_inc(&phba->debugfs_vport_count);
4288        }
4289
4290        if (lpfc_debugfs_max_disc_trc) {
4291                num = lpfc_debugfs_max_disc_trc - 1;
4292                if (num & lpfc_debugfs_max_disc_trc) {
4293                        /* Change to be a power of 2 */
4294                        num = lpfc_debugfs_max_disc_trc;
4295                        i = 0;
4296                        while (num > 1) {
4297                                num = num >> 1;
4298                                i++;
4299                        }
4300                        lpfc_debugfs_max_disc_trc = (1 << i);
4301                        printk(KERN_ERR
4302                               "lpfc_debugfs_max_disc_trc changed to %d\n",
4303                               lpfc_debugfs_max_disc_trc);
4304                }
4305        }
4306
4307        vport->disc_trc = kzalloc(
4308                (sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
4309                GFP_KERNEL);
4310
4311        if (!vport->disc_trc) {
4312                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4313                                 "0418 Cannot create debugfs disc trace "
4314                                 "buffer\n");
4315                goto debug_failed;
4316        }
4317        atomic_set(&vport->disc_trc_cnt, 0);
4318
4319        snprintf(name, sizeof(name), "discovery_trace");
4320        vport->debug_disc_trc =
4321                debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4322                                 vport->vport_debugfs_root,
4323                                 vport, &lpfc_debugfs_op_disc_trc);
4324        if (!vport->debug_disc_trc) {
4325                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4326                                 "0419 Cannot create debugfs "
4327                                 "discovery_trace\n");
4328                goto debug_failed;
4329        }
4330        snprintf(name, sizeof(name), "nodelist");
4331        vport->debug_nodelist =
4332                debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4333                                 vport->vport_debugfs_root,
4334                                 vport, &lpfc_debugfs_op_nodelist);
4335        if (!vport->debug_nodelist) {
4336                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4337                                 "2985 Can't create debugfs nodelist\n");
4338                goto debug_failed;
4339        }
4340
4341        /*
4342         * The following section is for additional directories/files for the
4343         * physical port.
4344         */
4345
4346        if (!pport_setup)
4347                goto debug_failed;
4348
4349        /*
4350         * iDiag debugfs root entry points for SLI4 device only
4351         */
4352        if (phba->sli_rev < LPFC_SLI_REV4)
4353                goto debug_failed;
4354
4355        snprintf(name, sizeof(name), "iDiag");
4356        if (!phba->idiag_root) {
4357                phba->idiag_root =
4358                        debugfs_create_dir(name, phba->hba_debugfs_root);
4359                if (!phba->idiag_root) {
4360                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4361                                         "2922 Can't create idiag debugfs\n");
4362                        goto debug_failed;
4363                }
4364                /* Initialize iDiag data structure */
4365                memset(&idiag, 0, sizeof(idiag));
4366        }
4367
4368        /* iDiag read PCI config space */
4369        snprintf(name, sizeof(name), "pciCfg");
4370        if (!phba->idiag_pci_cfg) {
4371                phba->idiag_pci_cfg =
4372                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4373                                phba->idiag_root, phba, &lpfc_idiag_op_pciCfg);
4374                if (!phba->idiag_pci_cfg) {
4375                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4376                                         "2923 Can't create idiag debugfs\n");
4377                        goto debug_failed;
4378                }
4379                idiag.offset.last_rd = 0;
4380        }
4381
4382        /* iDiag PCI BAR access */
4383        snprintf(name, sizeof(name), "barAcc");
4384        if (!phba->idiag_bar_acc) {
4385                phba->idiag_bar_acc =
4386                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4387                                phba->idiag_root, phba, &lpfc_idiag_op_barAcc);
4388                if (!phba->idiag_bar_acc) {
4389                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4390                                        "3056 Can't create idiag debugfs\n");
4391                        goto debug_failed;
4392                }
4393                idiag.offset.last_rd = 0;
4394        }
4395
4396        /* iDiag get PCI function queue information */
4397        snprintf(name, sizeof(name), "queInfo");
4398        if (!phba->idiag_que_info) {
4399                phba->idiag_que_info =
4400                        debugfs_create_file(name, S_IFREG|S_IRUGO,
4401                        phba->idiag_root, phba, &lpfc_idiag_op_queInfo);
4402                if (!phba->idiag_que_info) {
4403                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4404                                         "2924 Can't create idiag debugfs\n");
4405                        goto debug_failed;
4406                }
4407        }
4408
4409        /* iDiag access PCI function queue */
4410        snprintf(name, sizeof(name), "queAcc");
4411        if (!phba->idiag_que_acc) {
4412                phba->idiag_que_acc =
4413                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4414                                phba->idiag_root, phba, &lpfc_idiag_op_queAcc);
4415                if (!phba->idiag_que_acc) {
4416                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4417                                         "2926 Can't create idiag debugfs\n");
4418                        goto debug_failed;
4419                }
4420        }
4421
4422        /* iDiag access PCI function doorbell registers */
4423        snprintf(name, sizeof(name), "drbAcc");
4424        if (!phba->idiag_drb_acc) {
4425                phba->idiag_drb_acc =
4426                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4427                                phba->idiag_root, phba, &lpfc_idiag_op_drbAcc);
4428                if (!phba->idiag_drb_acc) {
4429                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4430                                         "2927 Can't create idiag debugfs\n");
4431                        goto debug_failed;
4432                }
4433        }
4434
4435        /* iDiag access PCI function control registers */
4436        snprintf(name, sizeof(name), "ctlAcc");
4437        if (!phba->idiag_ctl_acc) {
4438                phba->idiag_ctl_acc =
4439                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4440                                phba->idiag_root, phba, &lpfc_idiag_op_ctlAcc);
4441                if (!phba->idiag_ctl_acc) {
4442                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4443                                         "2981 Can't create idiag debugfs\n");
4444                        goto debug_failed;
4445                }
4446        }
4447
4448        /* iDiag access mbox commands */
4449        snprintf(name, sizeof(name), "mbxAcc");
4450        if (!phba->idiag_mbx_acc) {
4451                phba->idiag_mbx_acc =
4452                        debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
4453                                phba->idiag_root, phba, &lpfc_idiag_op_mbxAcc);
4454                if (!phba->idiag_mbx_acc) {
4455                        lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4456                                        "2980 Can't create idiag debugfs\n");
4457                        goto debug_failed;
4458                }
4459        }
4460
4461        /* iDiag extents access commands */
4462        if (phba->sli4_hba.extents_in_use) {
4463                snprintf(name, sizeof(name), "extAcc");
4464                if (!phba->idiag_ext_acc) {
4465                        phba->idiag_ext_acc =
4466                                debugfs_create_file(name,
4467                                                    S_IFREG|S_IRUGO|S_IWUSR,
4468                                                    phba->idiag_root, phba,
4469                                                    &lpfc_idiag_op_extAcc);
4470                        if (!phba->idiag_ext_acc) {
4471                                lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4472                                                "2986 Cant create "
4473                                                "idiag debugfs\n");
4474                                goto debug_failed;
4475                        }
4476                }
4477        }
4478
4479debug_failed:
4480        return;
4481#endif
4482}
4483
4484/**
4485 * lpfc_debugfs_terminate -  Tear down debugfs infrastructure for this vport
4486 * @vport: The vport pointer to remove from debugfs.
4487 *
4488 * Description:
4489 * When Debugfs is configured this routine removes debugfs file system elements
4490 * that are specific to this vport. It also checks to see if there are any
4491 * users left for the debugfs directories associated with the HBA and driver. If
4492 * this is the last user of the HBA directory or driver directory then it will
4493 * remove those from the debugfs infrastructure as well.
4494 **/
4495inline void
4496lpfc_debugfs_terminate(struct lpfc_vport *vport)
4497{
4498#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4499        struct lpfc_hba   *phba = vport->phba;
4500
4501        if (vport->disc_trc) {
4502                kfree(vport->disc_trc);
4503                vport->disc_trc = NULL;
4504        }
4505        if (vport->debug_disc_trc) {
4506                debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
4507                vport->debug_disc_trc = NULL;
4508        }
4509        if (vport->debug_nodelist) {
4510                debugfs_remove(vport->debug_nodelist); /* nodelist */
4511                vport->debug_nodelist = NULL;
4512        }
4513        if (vport->vport_debugfs_root) {
4514                debugfs_remove(vport->vport_debugfs_root); /* vportX */
4515                vport->vport_debugfs_root = NULL;
4516                atomic_dec(&phba->debugfs_vport_count);
4517        }
4518        if (atomic_read(&phba->debugfs_vport_count) == 0) {
4519
4520                if (phba->debug_hbqinfo) {
4521                        debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
4522                        phba->debug_hbqinfo = NULL;
4523                }
4524                if (phba->debug_dumpHBASlim) {
4525                        debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
4526                        phba->debug_dumpHBASlim = NULL;
4527                }
4528                if (phba->debug_dumpHostSlim) {
4529                        debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
4530                        phba->debug_dumpHostSlim = NULL;
4531                }
4532                if (phba->debug_dumpData) {
4533                        debugfs_remove(phba->debug_dumpData); /* dumpData */
4534                        phba->debug_dumpData = NULL;
4535                }
4536
4537                if (phba->debug_dumpDif) {
4538                        debugfs_remove(phba->debug_dumpDif); /* dumpDif */
4539                        phba->debug_dumpDif = NULL;
4540                }
4541                if (phba->debug_InjErrLBA) {
4542                        debugfs_remove(phba->debug_InjErrLBA); /* InjErrLBA */
4543                        phba->debug_InjErrLBA = NULL;
4544                }
4545                if (phba->debug_InjErrNPortID) {         /* InjErrNPortID */
4546                        debugfs_remove(phba->debug_InjErrNPortID);
4547                        phba->debug_InjErrNPortID = NULL;
4548                }
4549                if (phba->debug_InjErrWWPN) {
4550                        debugfs_remove(phba->debug_InjErrWWPN); /* InjErrWWPN */
4551                        phba->debug_InjErrWWPN = NULL;
4552                }
4553                if (phba->debug_writeGuard) {
4554                        debugfs_remove(phba->debug_writeGuard); /* writeGuard */
4555                        phba->debug_writeGuard = NULL;
4556                }
4557                if (phba->debug_writeApp) {
4558                        debugfs_remove(phba->debug_writeApp); /* writeApp */
4559                        phba->debug_writeApp = NULL;
4560                }
4561                if (phba->debug_writeRef) {
4562                        debugfs_remove(phba->debug_writeRef); /* writeRef */
4563                        phba->debug_writeRef = NULL;
4564                }
4565                if (phba->debug_readGuard) {
4566                        debugfs_remove(phba->debug_readGuard); /* readGuard */
4567                        phba->debug_readGuard = NULL;
4568                }
4569                if (phba->debug_readApp) {
4570                        debugfs_remove(phba->debug_readApp); /* readApp */
4571                        phba->debug_readApp = NULL;
4572                }
4573                if (phba->debug_readRef) {
4574                        debugfs_remove(phba->debug_readRef); /* readRef */
4575                        phba->debug_readRef = NULL;
4576                }
4577
4578                if (phba->slow_ring_trc) {
4579                        kfree(phba->slow_ring_trc);
4580                        phba->slow_ring_trc = NULL;
4581                }
4582                if (phba->debug_slow_ring_trc) {
4583                        /* slow_ring_trace */
4584                        debugfs_remove(phba->debug_slow_ring_trc);
4585                        phba->debug_slow_ring_trc = NULL;
4586                }
4587
4588                /*
4589                 * iDiag release
4590                 */
4591                if (phba->sli_rev == LPFC_SLI_REV4) {
4592                        if (phba->idiag_ext_acc) {
4593                                /* iDiag extAcc */
4594                                debugfs_remove(phba->idiag_ext_acc);
4595                                phba->idiag_ext_acc = NULL;
4596                        }
4597                        if (phba->idiag_mbx_acc) {
4598                                /* iDiag mbxAcc */
4599                                debugfs_remove(phba->idiag_mbx_acc);
4600                                phba->idiag_mbx_acc = NULL;
4601                        }
4602                        if (phba->idiag_ctl_acc) {
4603                                /* iDiag ctlAcc */
4604                                debugfs_remove(phba->idiag_ctl_acc);
4605                                phba->idiag_ctl_acc = NULL;
4606                        }
4607                        if (phba->idiag_drb_acc) {
4608                                /* iDiag drbAcc */
4609                                debugfs_remove(phba->idiag_drb_acc);
4610                                phba->idiag_drb_acc = NULL;
4611                        }
4612                        if (phba->idiag_que_acc) {
4613                                /* iDiag queAcc */
4614                                debugfs_remove(phba->idiag_que_acc);
4615                                phba->idiag_que_acc = NULL;
4616                        }
4617                        if (phba->idiag_que_info) {
4618                                /* iDiag queInfo */
4619                                debugfs_remove(phba->idiag_que_info);
4620                                phba->idiag_que_info = NULL;
4621                        }
4622                        if (phba->idiag_bar_acc) {
4623                                /* iDiag barAcc */
4624                                debugfs_remove(phba->idiag_bar_acc);
4625                                phba->idiag_bar_acc = NULL;
4626                        }
4627                        if (phba->idiag_pci_cfg) {
4628                                /* iDiag pciCfg */
4629                                debugfs_remove(phba->idiag_pci_cfg);
4630                                phba->idiag_pci_cfg = NULL;
4631                        }
4632
4633                        /* Finally remove the iDiag debugfs root */
4634                        if (phba->idiag_root) {
4635                                /* iDiag root */
4636                                debugfs_remove(phba->idiag_root);
4637                                phba->idiag_root = NULL;
4638                        }
4639                }
4640
4641                if (phba->hba_debugfs_root) {
4642                        debugfs_remove(phba->hba_debugfs_root); /* fnX */
4643                        phba->hba_debugfs_root = NULL;
4644                        atomic_dec(&lpfc_debugfs_hba_count);
4645                }
4646
4647                if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
4648                        debugfs_remove(lpfc_debugfs_root); /* lpfc */
4649                        lpfc_debugfs_root = NULL;
4650                }
4651        }
4652#endif
4653        return;
4654}
4655
4656/*
4657 * Driver debug utility routines outside of debugfs. The debug utility
4658 * routines implemented here is intended to be used in the instrumented
4659 * debug driver for debugging host or port issues.
4660 */
4661
4662/**
4663 * lpfc_debug_dump_all_queues - dump all the queues with a hba
4664 * @phba: Pointer to HBA context object.
4665 *
4666 * This function dumps entries of all the queues asociated with the @phba.
4667 **/
4668void
4669lpfc_debug_dump_all_queues(struct lpfc_hba *phba)
4670{
4671        int fcp_wqidx;
4672
4673        /*
4674         * Dump Work Queues (WQs)
4675         */
4676        lpfc_debug_dump_mbx_wq(phba);
4677        lpfc_debug_dump_els_wq(phba);
4678
4679        for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++)
4680                lpfc_debug_dump_fcp_wq(phba, fcp_wqidx);
4681
4682        lpfc_debug_dump_hdr_rq(phba);
4683        lpfc_debug_dump_dat_rq(phba);
4684        /*
4685         * Dump Complete Queues (CQs)
4686         */
4687        lpfc_debug_dump_mbx_cq(phba);
4688        lpfc_debug_dump_els_cq(phba);
4689
4690        for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++)
4691                lpfc_debug_dump_fcp_cq(phba, fcp_wqidx);
4692
4693        /*
4694         * Dump Event Queues (EQs)
4695         */
4696        for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++)
4697                lpfc_debug_dump_hba_eq(phba, fcp_wqidx);
4698}
4699