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