drivers/scsi/qla2xxx/qla_dfs.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/debugfs.h>
  10 #include <linux/seq_file.h>
  11
  12 static struct dentry *qla2x00_dfs_root;
  13 static atomic_t qla2x00_dfs_root_count;
  14
  15 static int
  16 qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused)
  17 {
  18         scsi_qla_host_t *vha = s->private;
  19         struct qla_hw_data *ha = vha->hw;
  20         unsigned long flags;
  21         struct fc_port *sess = NULL;
  22         struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
  23
  24         seq_printf(s, "%s\n", vha->host_str);
  25         if (tgt) {
  26                 seq_puts(s, "Port ID   Port Name                Handle\n");
  27
  28                 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
  29                 list_for_each_entry(sess, &vha->vp_fcports, list)
  30                         seq_printf(s, "%02x:%02x:%02x  %8phC  %d\n",
  31                             sess->d_id.b.domain, sess->d_id.b.area,
  32                             sess->d_id.b.al_pa, sess->port_name,
  33                             sess->loop_id);
  34                 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
  35         }
  36
  37         return 0;
  38 }
  39
  40 static int
  41 qla2x00_dfs_tgt_sess_open(struct inode *inode, struct file *file)
  42 {
  43         scsi_qla_host_t *vha = inode->i_private;
  44
  45         return single_open(file, qla2x00_dfs_tgt_sess_show, vha);
  46 }
  47
  48 static const struct file_operations dfs_tgt_sess_ops = {
  49         .open           = qla2x00_dfs_tgt_sess_open,
  50         .read           = seq_read,
  51         .llseek         = seq_lseek,
  52         .release        = single_release,
  53 };
  54
  55 static int
  56 qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused)
  57 {
  58         scsi_qla_host_t *vha = s->private;
  59         struct qla_hw_data *ha = vha->hw;
  60         struct gid_list_info *gid_list;
  61         dma_addr_t gid_list_dma;
  62         fc_port_t fc_port;
  63         char *id_iter;
  64         int rc, i;
  65         uint16_t entries, loop_id;
  66         struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
  67
  68         seq_printf(s, "%s\n", vha->host_str);
  69         if (tgt) {
  70                 gid_list = dma_alloc_coherent(&ha->pdev->dev,
  71                     qla2x00_gid_list_size(ha),
  72                     &gid_list_dma, GFP_KERNEL);
  73                 if (!gid_list) {
  74                         ql_dbg(ql_dbg_user, vha, 0x7018,
  75                             "DMA allocation failed for %u\n",
  76                              qla2x00_gid_list_size(ha));
  77                         return 0;
  78                 }
  79
  80                 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma,
  81                     &entries);
  82                 if (rc != QLA_SUCCESS)
  83                         goto out_free_id_list;
  84
  85                 id_iter = (char *)gid_list;
  86
  87                 seq_puts(s, "Port Name  Port ID         Loop ID\n");
  88
  89                 for (i = 0; i < entries; i++) {
  90                         struct gid_list_info *gid =
  91                             (struct gid_list_info *)id_iter;
  92                         loop_id = le16_to_cpu(gid->loop_id);
  93                         memset(&fc_port, 0, sizeof(fc_port_t));
  94
  95                         fc_port.loop_id = loop_id;
  96
  97                         rc = qla24xx_gpdb_wait(vha, &fc_port, 0);
  98                         seq_printf(s, "%8phC  %02x%02x%02x  %d\n",
  99                                 fc_port.port_name, fc_port.d_id.b.domain,
 100                                 fc_port.d_id.b.area, fc_port.d_id.b.al_pa,
 101                                 fc_port.loop_id);
 102                         id_iter += ha->gid_list_info_size;
 103                 }
 104 out_free_id_list:
 105                 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
 106                     gid_list, gid_list_dma);
 107         }
 108
 109         return 0;
 110 }
 111
 112 static int
 113 qla2x00_dfs_tgt_port_database_open(struct inode *inode, struct file *file)
 114 {
 115         scsi_qla_host_t *vha = inode->i_private;
 116
 117         return single_open(file, qla2x00_dfs_tgt_port_database_show, vha);
 118 }
 119
 120 static const struct file_operations dfs_tgt_port_database_ops = {
 121         .open           = qla2x00_dfs_tgt_port_database_open,
 122         .read           = seq_read,
 123         .llseek         = seq_lseek,
 124         .release        = single_release,
 125 };
 126
 127 static int
 128 qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
 129 {
 130         struct scsi_qla_host *vha = s->private;
 131         uint16_t mb[MAX_IOCB_MB_REG];
 132         int rc;
 133
 134         rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG);
 135         if (rc != QLA_SUCCESS) {
 136                 seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]);
 137         } else {
 138                 seq_puts(s, "FW Resource count\n\n");
 139                 seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]);
 140                 seq_printf(s, "current TGT exchg count[%d]\n", mb[2]);
 141                 seq_printf(s, "original Initiator Exchange count[%d]\n", mb[3]);
 142                 seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[6]);
 143                 seq_printf(s, "Original IOCB count[%d]\n", mb[7]);
 144                 seq_printf(s, "Current IOCB count[%d]\n", mb[10]);
 145                 seq_printf(s, "MAX VP count[%d]\n", mb[11]);
 146                 seq_printf(s, "MAX FCF count[%d]\n", mb[12]);
 147                 seq_printf(s, "Current free pageable XCB buffer cnt[%d]\n",
 148                     mb[20]);
 149                 seq_printf(s, "Original Initiator fast XCB buffer cnt[%d]\n",
 150                     mb[21]);
 151                 seq_printf(s, "Current free Initiator fast XCB buffer cnt[%d]\n",
 152                     mb[22]);
 153                 seq_printf(s, "Original Target fast XCB buffer cnt[%d]\n",
 154                     mb[23]);
 155
 156         }
 157
 158         return 0;
 159 }
 160
 161 static int
 162 qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file)
 163 {
 164         struct scsi_qla_host *vha = inode->i_private;
 165
 166         return single_open(file, qla_dfs_fw_resource_cnt_show, vha);
 167 }
 168
 169 static const struct file_operations dfs_fw_resource_cnt_ops = {
 170         .open           = qla_dfs_fw_resource_cnt_open,
 171         .read           = seq_read,
 172         .llseek         = seq_lseek,
 173         .release        = single_release,
 174 };
 175
 176 static int
 177 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)
 178 {
 179         struct scsi_qla_host *vha = s->private;
 180         struct qla_qpair *qpair = vha->hw->base_qpair;
 181         uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio,
 182                 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd,
 183                 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent;
 184         u16 i;
 185
 186         qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd;
 187         core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf;
 188         qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio;
 189         core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status;
 190         qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio;
 191         core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd;
 192         num_q_full_sent = qpair->tgt_counters.num_q_full_sent;
 193         num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed;
 194         num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent;
 195
 196         for (i = 0; i < vha->hw->max_qpairs; i++) {
 197                 qpair = vha->hw->queue_pair_map[i];
 198                 if (!qpair)
 199                         continue;
 200                 qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd;
 201                 core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf;
 202                 qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio;
 203                 core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status;
 204                 qla_core_ret_sta_ctio +=
 205                     qpair->tgt_counters.qla_core_ret_sta_ctio;
 206                 core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd;
 207                 num_q_full_sent += qpair->tgt_counters.num_q_full_sent;
 208                 num_alloc_iocb_failed +=
 209                     qpair->tgt_counters.num_alloc_iocb_failed;
 210                 num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent;
 211         }
 212
 213         seq_puts(s, "Target Counters\n");
 214         seq_printf(s, "qla_core_sbt_cmd = %lld\n",
 215                 qla_core_sbt_cmd);
 216         seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
 217                 qla_core_ret_sta_ctio);
 218         seq_printf(s, "qla_core_ret_ctio = %lld\n",
 219                 qla_core_ret_ctio);
 220         seq_printf(s, "core_qla_que_buf = %lld\n",
 221                 core_qla_que_buf);
 222         seq_printf(s, "core_qla_snd_status = %lld\n",
 223                 core_qla_snd_status);
 224         seq_printf(s, "core_qla_free_cmd = %lld\n",
 225                 core_qla_free_cmd);
 226         seq_printf(s, "num alloc iocb failed = %lld\n",
 227                 num_alloc_iocb_failed);
 228         seq_printf(s, "num term exchange sent = %lld\n",
 229                 num_term_xchg_sent);
 230         seq_printf(s, "num Q full sent = %lld\n",
 231                 num_q_full_sent);
 232
 233         /* DIF stats */
 234         seq_printf(s, "DIF Inp Bytes = %lld\n",
 235                 vha->qla_stats.qla_dif_stats.dif_input_bytes);
 236         seq_printf(s, "DIF Outp Bytes = %lld\n",
 237                 vha->qla_stats.qla_dif_stats.dif_output_bytes);
 238         seq_printf(s, "DIF Inp Req = %lld\n",
 239                 vha->qla_stats.qla_dif_stats.dif_input_requests);
 240         seq_printf(s, "DIF Outp Req = %lld\n",
 241                 vha->qla_stats.qla_dif_stats.dif_output_requests);
 242         seq_printf(s, "DIF Guard err = %d\n",
 243                 vha->qla_stats.qla_dif_stats.dif_guard_err);
 244         seq_printf(s, "DIF Ref tag err = %d\n",
 245                 vha->qla_stats.qla_dif_stats.dif_ref_tag_err);
 246         seq_printf(s, "DIF App tag err = %d\n",
 247                 vha->qla_stats.qla_dif_stats.dif_app_tag_err);
 248         return 0;
 249 }
 250
 251 static int
 252 qla_dfs_tgt_counters_open(struct inode *inode, struct file *file)
 253 {
 254         struct scsi_qla_host *vha = inode->i_private;
 255
 256         return single_open(file, qla_dfs_tgt_counters_show, vha);
 257 }
 258
 259 static const struct file_operations dfs_tgt_counters_ops = {
 260         .open           = qla_dfs_tgt_counters_open,
 261         .read           = seq_read,
 262         .llseek         = seq_lseek,
 263         .release        = single_release,
 264 };
 265
 266 static int
 267 qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
 268 {
 269         scsi_qla_host_t *vha = s->private;
 270         uint32_t cnt;
 271         uint32_t *fce;
 272         uint64_t fce_start;
 273         struct qla_hw_data *ha = vha->hw;
 274
 275         mutex_lock(&ha->fce_mutex);
 276
 277         seq_puts(s, "FCE Trace Buffer\n");
 278         seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);
 279         seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
 280         seq_puts(s, "FCE Enable Registers\n");
 281         seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
 282             ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
 283             ha->fce_mb[5], ha->fce_mb[6]);
 284
 285         fce = (uint32_t *) ha->fce;
 286         fce_start = (unsigned long long) ha->fce_dma;
 287         for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
 288                 if (cnt % 8 == 0)
 289                         seq_printf(s, "\n%llx: ",
 290                             (unsigned long long)((cnt * 4) + fce_start));
 291                 else
 292                         seq_putc(s, ' ');
 293                 seq_printf(s, "%08x", *fce++);
 294         }
 295
 296         seq_puts(s, "\nEnd\n");
 297
 298         mutex_unlock(&ha->fce_mutex);
 299
 300         return 0;
 301 }
 302
 303 static int
 304 qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
 305 {
 306         scsi_qla_host_t *vha = inode->i_private;
 307         struct qla_hw_data *ha = vha->hw;
 308         int rval;
 309
 310         if (!ha->flags.fce_enabled)
 311                 goto out;
 312
 313         mutex_lock(&ha->fce_mutex);
 314
 315         /* Pause tracing to flush FCE buffers. */
 316         rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);
 317         if (rval)
 318                 ql_dbg(ql_dbg_user, vha, 0x705c,
 319                     "DebugFS: Unable to disable FCE (%d).\n", rval);
 320
 321         ha->flags.fce_enabled = 0;
 322
 323         mutex_unlock(&ha->fce_mutex);
 324 out:
 325         return single_open(file, qla2x00_dfs_fce_show, vha);
 326 }
 327
 328 static int
 329 qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
 330 {
 331         scsi_qla_host_t *vha = inode->i_private;
 332         struct qla_hw_data *ha = vha->hw;
 333         int rval;
 334
 335         if (ha->flags.fce_enabled)
 336                 goto out;
 337
 338         mutex_lock(&ha->fce_mutex);
 339
 340         /* Re-enable FCE tracing. */
 341         ha->flags.fce_enabled = 1;
 342         memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
 343         rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,
 344             ha->fce_mb, &ha->fce_bufs);
 345         if (rval) {
 346                 ql_dbg(ql_dbg_user, vha, 0x700d,
 347                     "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
 348                 ha->flags.fce_enabled = 0;
 349         }
 350
 351         mutex_unlock(&ha->fce_mutex);
 352 out:
 353         return single_release(inode, file);
 354 }
 355
 356 static const struct file_operations dfs_fce_ops = {
 357         .open           = qla2x00_dfs_fce_open,
 358         .read           = seq_read,
 359         .llseek         = seq_lseek,
 360         .release        = qla2x00_dfs_fce_release,
 361 };
 362
 363 static int
 364 qla_dfs_naqp_show(struct seq_file *s, void *unused)
 365 {
 366         struct scsi_qla_host *vha = s->private;
 367         struct qla_hw_data *ha = vha->hw;
 368
 369         seq_printf(s, "%d\n", ha->tgt.num_act_qpairs);
 370         return 0;
 371 }
 372
 373 static int
 374 qla_dfs_naqp_open(struct inode *inode, struct file *file)
 375 {
 376         struct scsi_qla_host *vha = inode->i_private;
 377
 378         return single_open(file, qla_dfs_naqp_show, vha);
 379 }
 380
 381 static ssize_t
 382 qla_dfs_naqp_write(struct file *file, const char __user *buffer,
 383     size_t count, loff_t *pos)
 384 {
 385         struct seq_file *s = file->private_data;
 386         struct scsi_qla_host *vha = s->private;
 387         struct qla_hw_data *ha = vha->hw;
 388         char *buf;
 389         int rc = 0;
 390         unsigned long num_act_qp;
 391
 392         if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) {
 393                 pr_err("host%ld: this adapter does not support Multi Q.",
 394                     vha->host_no);
 395                 return -EINVAL;
 396         }
 397
 398         if (!vha->flags.qpairs_available) {
 399                 pr_err("host%ld: Driver is not setup with Multi Q.",
 400                     vha->host_no);
 401                 return -EINVAL;
 402         }
 403         buf = memdup_user_nul(buffer, count);
 404         if (IS_ERR(buf)) {
 405                 pr_err("host%ld: fail to copy user buffer.",
 406                     vha->host_no);
 407                 return PTR_ERR(buf);
 408         }
 409
 410         num_act_qp = simple_strtoul(buf, NULL, 0);
 411
 412         if (num_act_qp >= vha->hw->max_qpairs) {
 413                 pr_err("User set invalid number of qpairs %lu. Max = %d",
 414                     num_act_qp, vha->hw->max_qpairs);
 415                 rc = -EINVAL;
 416                 goto out_free;
 417         }
 418
 419         if (num_act_qp != ha->tgt.num_act_qpairs) {
 420                 ha->tgt.num_act_qpairs = num_act_qp;
 421                 qlt_clr_qp_table(vha);
 422         }
 423         rc = count;
 424 out_free:
 425         kfree(buf);
 426         return rc;
 427 }
 428
 429 static const struct file_operations dfs_naqp_ops = {
 430         .open           = qla_dfs_naqp_open,
 431         .read           = seq_read,
 432         .llseek         = seq_lseek,
 433         .release        = single_release,
 434         .write          = qla_dfs_naqp_write,
 435 };
 436
 437
 438 int
 439 qla2x00_dfs_setup(scsi_qla_host_t *vha)
 440 {
 441         struct qla_hw_data *ha = vha->hw;
 442
 443         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
 444             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
 445                 goto out;
 446         if (!ha->fce)
 447                 goto out;
 448
 449         if (qla2x00_dfs_root)
 450                 goto create_dir;
 451
 452         atomic_set(&qla2x00_dfs_root_count, 0);
 453         qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);
 454
 455 create_dir:
 456         if (ha->dfs_dir)
 457                 goto create_nodes;
 458
 459         mutex_init(&ha->fce_mutex);
 460         ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);
 461
 462         atomic_inc(&qla2x00_dfs_root_count);
 463
 464 create_nodes:
 465         ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",
 466             S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops);
 467
 468         ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
 469             ha->dfs_dir, vha, &dfs_tgt_counters_ops);
 470
 471         ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database",
 472             S_IRUSR,  ha->dfs_dir, vha, &dfs_tgt_port_database_ops);
 473
 474         ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
 475             &dfs_fce_ops);
 476
 477         ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",
 478                 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops);
 479
 480         if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))
 481                 ha->tgt.dfs_naqp = debugfs_create_file("naqp",
 482                     0400, ha->dfs_dir, vha, &dfs_naqp_ops);
 483 out:
 484         return 0;
 485 }
 486
 487 int
 488 qla2x00_dfs_remove(scsi_qla_host_t *vha)
 489 {
 490         struct qla_hw_data *ha = vha->hw;
 491
 492         if (ha->tgt.dfs_naqp) {
 493                 debugfs_remove(ha->tgt.dfs_naqp);
 494                 ha->tgt.dfs_naqp = NULL;
 495         }
 496
 497         if (ha->tgt.dfs_tgt_sess) {
 498                 debugfs_remove(ha->tgt.dfs_tgt_sess);
 499                 ha->tgt.dfs_tgt_sess = NULL;
 500         }
 501
 502         if (ha->tgt.dfs_tgt_port_database) {
 503                 debugfs_remove(ha->tgt.dfs_tgt_port_database);
 504                 ha->tgt.dfs_tgt_port_database = NULL;
 505         }
 506
 507         if (ha->dfs_fw_resource_cnt) {
 508                 debugfs_remove(ha->dfs_fw_resource_cnt);
 509                 ha->dfs_fw_resource_cnt = NULL;
 510         }
 511
 512         if (ha->dfs_tgt_counters) {
 513                 debugfs_remove(ha->dfs_tgt_counters);
 514                 ha->dfs_tgt_counters = NULL;
 515         }
 516
 517         if (ha->dfs_fce) {
 518                 debugfs_remove(ha->dfs_fce);
 519                 ha->dfs_fce = NULL;
 520         }
 521
 522         if (ha->dfs_dir) {
 523                 debugfs_remove(ha->dfs_dir);
 524                 ha->dfs_dir = NULL;
 525                 atomic_dec(&qla2x00_dfs_root_count);
 526         }
 527
 528         if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
 529             qla2x00_dfs_root) {
 530                 debugfs_remove(qla2x00_dfs_root);
 531                 qla2x00_dfs_root = NULL;
 532         }
 533
 534         return 0;
 535 }