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         return single_open(file, qla2x00_dfs_tgt_sess_show, vha);
  45 }
  46
  47 static const struct file_operations dfs_tgt_sess_ops = {
  48         .open           = qla2x00_dfs_tgt_sess_open,
  49         .read           = seq_read,
  50         .llseek         = seq_lseek,
  51         .release        = single_release,
  52 };
  53
  54 static int
  55 qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused)
  56 {
  57         scsi_qla_host_t *vha = s->private;
  58         struct qla_hw_data *ha = vha->hw;
  59         struct gid_list_info *gid_list;
  60         dma_addr_t gid_list_dma;
  61         fc_port_t fc_port;
  62         char *id_iter;
  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                 id_iter = (char *)gid_list;
  85
  86                 seq_puts(s, "Port Name  Port ID         Loop ID\n");
  87
  88                 for (i = 0; i < entries; i++) {
  89                         struct gid_list_info *gid =
  90                             (struct gid_list_info *)id_iter;
  91                         loop_id = le16_to_cpu(gid->loop_id);
  92                         memset(&fc_port, 0, sizeof(fc_port_t));
  93
  94                         fc_port.loop_id = loop_id;
  95
  96                         rc = qla24xx_gpdb_wait(vha, &fc_port, 0);
  97                         seq_printf(s, "%8phC  %02x%02x%02x  %d\n",
  98                                 fc_port.port_name, fc_port.d_id.b.domain,
  99                                 fc_port.d_id.b.area, fc_port.d_id.b.al_pa,
 100                                 fc_port.loop_id);
 101                         id_iter += ha->gid_list_info_size;
 102                 }
 103 out_free_id_list:
 104                 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
 105                     gid_list, gid_list_dma);
 106         }
 107
 108         return 0;
 109 }
 110
 111 static int
 112 qla2x00_dfs_tgt_port_database_open(struct inode *inode, struct file *file)
 113 {
 114         scsi_qla_host_t *vha = inode->i_private;
 115
 116         return single_open(file, qla2x00_dfs_tgt_port_database_show, vha);
 117 }
 118
 119 static const struct file_operations dfs_tgt_port_database_ops = {
 120         .open           = qla2x00_dfs_tgt_port_database_open,
 121         .read           = seq_read,
 122         .llseek         = seq_lseek,
 123         .release        = single_release,
 124 };
 125
 126 static int
 127 qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused)
 128 {
 129         struct scsi_qla_host *vha = s->private;
 130         struct qla_hw_data *ha = vha->hw;
 131
 132         seq_puts(s, "FW Resource count\n\n");
 133         seq_printf(s, "Original TGT exchg count[%d]\n",
 134             ha->orig_fw_tgt_xcb_count);
 135         seq_printf(s, "current TGT exchg count[%d]\n",
 136             ha->cur_fw_tgt_xcb_count);
 137         seq_printf(s, "original Initiator Exchange count[%d]\n",
 138             ha->orig_fw_xcb_count);
 139         seq_printf(s, "Current Initiator Exchange count[%d]\n",
 140             ha->cur_fw_xcb_count);
 141         seq_printf(s, "Original IOCB count[%d]\n", ha->orig_fw_iocb_count);
 142         seq_printf(s, "Current IOCB count[%d]\n", ha->cur_fw_iocb_count);
 143         seq_printf(s, "MAX VP count[%d]\n", ha->max_npiv_vports);
 144         seq_printf(s, "MAX FCF count[%d]\n", ha->fw_max_fcf_count);
 145
 146         return 0;
 147 }
 148
 149 static int
 150 qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file)
 151 {
 152         struct scsi_qla_host *vha = inode->i_private;
 153         return single_open(file, qla_dfs_fw_resource_cnt_show, vha);
 154 }
 155
 156 static const struct file_operations dfs_fw_resource_cnt_ops = {
 157         .open           = qla_dfs_fw_resource_cnt_open,
 158         .read           = seq_read,
 159         .llseek         = seq_lseek,
 160         .release        = single_release,
 161 };
 162
 163 static int
 164 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)
 165 {
 166         struct scsi_qla_host *vha = s->private;
 167         struct qla_qpair *qpair = vha->hw->base_qpair;
 168         uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio,
 169                 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd,
 170                 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent;
 171         u16 i;
 172
 173         qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd;
 174         core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf;
 175         qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio;
 176         core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status;
 177         qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio;
 178         core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd;
 179         num_q_full_sent = qpair->tgt_counters.num_q_full_sent;
 180         num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed;
 181         num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent;
 182
 183         for (i = 0; i < vha->hw->max_qpairs; i++) {
 184                 qpair = vha->hw->queue_pair_map[i];
 185                 qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd;
 186                 core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf;
 187                 qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio;
 188                 core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status;
 189                 qla_core_ret_sta_ctio +=
 190                     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 +=
 194                     qpair->tgt_counters.num_alloc_iocb_failed;
 195                 num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent;
 196         }
 197
 198         seq_puts(s, "Target Counters\n");
 199         seq_printf(s, "qla_core_sbt_cmd = %lld\n",
 200                 qla_core_sbt_cmd);
 201         seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
 202                 qla_core_ret_sta_ctio);
 203         seq_printf(s, "qla_core_ret_ctio = %lld\n",
 204                 qla_core_ret_ctio);
 205         seq_printf(s, "core_qla_que_buf = %lld\n",
 206                 core_qla_que_buf);
 207         seq_printf(s, "core_qla_snd_status = %lld\n",
 208                 core_qla_snd_status);
 209         seq_printf(s, "core_qla_free_cmd = %lld\n",
 210                 core_qla_free_cmd);
 211         seq_printf(s, "num alloc iocb failed = %lld\n",
 212                 num_alloc_iocb_failed);
 213         seq_printf(s, "num term exchange sent = %lld\n",
 214                 num_term_xchg_sent);
 215         seq_printf(s, "num Q full sent = %lld\n",
 216                 num_q_full_sent);
 217
 218         /* DIF stats */
 219         seq_printf(s, "DIF Inp Bytes = %lld\n",
 220                 vha->qla_stats.qla_dif_stats.dif_input_bytes);
 221         seq_printf(s, "DIF Outp Bytes = %lld\n",
 222                 vha->qla_stats.qla_dif_stats.dif_output_bytes);
 223         seq_printf(s, "DIF Inp Req = %lld\n",
 224                 vha->qla_stats.qla_dif_stats.dif_input_requests);
 225         seq_printf(s, "DIF Outp Req = %lld\n",
 226                 vha->qla_stats.qla_dif_stats.dif_output_requests);
 227         seq_printf(s, "DIF Guard err = %d\n",
 228                 vha->qla_stats.qla_dif_stats.dif_guard_err);
 229         seq_printf(s, "DIF Ref tag err = %d\n",
 230                 vha->qla_stats.qla_dif_stats.dif_ref_tag_err);
 231         seq_printf(s, "DIF App tag err = %d\n",
 232                 vha->qla_stats.qla_dif_stats.dif_app_tag_err);
 233         return 0;
 234 }
 235
 236 static int
 237 qla_dfs_tgt_counters_open(struct inode *inode, struct file *file)
 238 {
 239         struct scsi_qla_host *vha = inode->i_private;
 240         return single_open(file, qla_dfs_tgt_counters_show, vha);
 241 }
 242
 243 static const struct file_operations dfs_tgt_counters_ops = {
 244         .open           = qla_dfs_tgt_counters_open,
 245         .read           = seq_read,
 246         .llseek         = seq_lseek,
 247         .release        = single_release,
 248 };
 249
 250 static int
 251 qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
 252 {
 253         scsi_qla_host_t *vha = s->private;
 254         uint32_t cnt;
 255         uint32_t *fce;
 256         uint64_t fce_start;
 257         struct qla_hw_data *ha = vha->hw;
 258
 259         mutex_lock(&ha->fce_mutex);
 260
 261         seq_puts(s, "FCE Trace Buffer\n");
 262         seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);
 263         seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
 264         seq_puts(s, "FCE Enable Registers\n");
 265         seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
 266             ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
 267             ha->fce_mb[5], ha->fce_mb[6]);
 268
 269         fce = (uint32_t *) ha->fce;
 270         fce_start = (unsigned long long) ha->fce_dma;
 271         for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
 272                 if (cnt % 8 == 0)
 273                         seq_printf(s, "\n%llx: ",
 274                             (unsigned long long)((cnt * 4) + fce_start));
 275                 else
 276                         seq_putc(s, ' ');
 277                 seq_printf(s, "%08x", *fce++);
 278         }
 279
 280         seq_puts(s, "\nEnd\n");
 281
 282         mutex_unlock(&ha->fce_mutex);
 283
 284         return 0;
 285 }
 286
 287 static int
 288 qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
 289 {
 290         scsi_qla_host_t *vha = inode->i_private;
 291         struct qla_hw_data *ha = vha->hw;
 292         int rval;
 293
 294         if (!ha->flags.fce_enabled)
 295                 goto out;
 296
 297         mutex_lock(&ha->fce_mutex);
 298
 299         /* Pause tracing to flush FCE buffers. */
 300         rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);
 301         if (rval)
 302                 ql_dbg(ql_dbg_user, vha, 0x705c,
 303                     "DebugFS: Unable to disable FCE (%d).\n", rval);
 304
 305         ha->flags.fce_enabled = 0;
 306
 307         mutex_unlock(&ha->fce_mutex);
 308 out:
 309         return single_open(file, qla2x00_dfs_fce_show, vha);
 310 }
 311
 312 static int
 313 qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
 314 {
 315         scsi_qla_host_t *vha = inode->i_private;
 316         struct qla_hw_data *ha = vha->hw;
 317         int rval;
 318
 319         if (ha->flags.fce_enabled)
 320                 goto out;
 321
 322         mutex_lock(&ha->fce_mutex);
 323
 324         /* Re-enable FCE tracing. */
 325         ha->flags.fce_enabled = 1;
 326         memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
 327         rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,
 328             ha->fce_mb, &ha->fce_bufs);
 329         if (rval) {
 330                 ql_dbg(ql_dbg_user, vha, 0x700d,
 331                     "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
 332                 ha->flags.fce_enabled = 0;
 333         }
 334
 335         mutex_unlock(&ha->fce_mutex);
 336 out:
 337         return single_release(inode, file);
 338 }
 339
 340 static const struct file_operations dfs_fce_ops = {
 341         .open           = qla2x00_dfs_fce_open,
 342         .read           = seq_read,
 343         .llseek         = seq_lseek,
 344         .release        = qla2x00_dfs_fce_release,
 345 };
 346
 347 static int
 348 qla_dfs_naqp_show(struct seq_file *s, void *unused)
 349 {
 350         struct scsi_qla_host *vha = s->private;
 351         struct qla_hw_data *ha = vha->hw;
 352
 353         seq_printf(s, "%d\n", ha->tgt.num_act_qpairs);
 354         return 0;
 355 }
 356
 357 static int
 358 qla_dfs_naqp_open(struct inode *inode, struct file *file)
 359 {
 360         struct scsi_qla_host *vha = inode->i_private;
 361
 362         return single_open(file, qla_dfs_naqp_show, vha);
 363 }
 364
 365 static ssize_t
 366 qla_dfs_naqp_write(struct file *file, const char __user *buffer,
 367     size_t count, loff_t *pos)
 368 {
 369         struct seq_file *s = file->private_data;
 370         struct scsi_qla_host *vha = s->private;
 371         struct qla_hw_data *ha = vha->hw;
 372         char *buf;
 373         int rc = 0;
 374         unsigned long num_act_qp;
 375
 376         if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha))) {
 377                 pr_err("host%ld: this adapter does not support Multi Q.",
 378                     vha->host_no);
 379                 return -EINVAL;
 380         }
 381
 382         if (!vha->flags.qpairs_available) {
 383                 pr_err("host%ld: Driver is not setup with Multi Q.",
 384                     vha->host_no);
 385                 return -EINVAL;
 386         }
 387         buf = memdup_user_nul(buffer, count);
 388         if (IS_ERR(buf)) {
 389                 pr_err("host%ld: fail to copy user buffer.",
 390                     vha->host_no);
 391                 return PTR_ERR(buf);
 392         }
 393
 394         num_act_qp = simple_strtoul(buf, NULL, 0);
 395
 396         if (num_act_qp >= vha->hw->max_qpairs) {
 397                 pr_err("User set invalid number of qpairs %lu. Max = %d",
 398                     num_act_qp, vha->hw->max_qpairs);
 399                 rc = -EINVAL;
 400                 goto out_free;
 401         }
 402
 403         if (num_act_qp != ha->tgt.num_act_qpairs) {
 404                 ha->tgt.num_act_qpairs = num_act_qp;
 405                 qlt_clr_qp_table(vha);
 406         }
 407         rc = count;
 408 out_free:
 409         kfree(buf);
 410         return rc;
 411 }
 412
 413 static const struct file_operations dfs_naqp_ops = {
 414         .open           = qla_dfs_naqp_open,
 415         .read           = seq_read,
 416         .llseek         = seq_lseek,
 417         .release        = single_release,
 418         .write          = qla_dfs_naqp_write,
 419 };
 420
 421
 422 int
 423 qla2x00_dfs_setup(scsi_qla_host_t *vha)
 424 {
 425         struct qla_hw_data *ha = vha->hw;
 426
 427         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
 428             !IS_QLA27XX(ha))
 429                 goto out;
 430         if (!ha->fce)
 431                 goto out;
 432
 433         if (qla2x00_dfs_root)
 434                 goto create_dir;
 435
 436         atomic_set(&qla2x00_dfs_root_count, 0);
 437         qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);
 438         if (!qla2x00_dfs_root) {
 439                 ql_log(ql_log_warn, vha, 0x00f7,
 440                     "Unable to create debugfs root directory.\n");
 441                 goto out;
 442         }
 443
 444 create_dir:
 445         if (ha->dfs_dir)
 446                 goto create_nodes;
 447
 448         mutex_init(&ha->fce_mutex);
 449         ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);
 450         if (!ha->dfs_dir) {
 451                 ql_log(ql_log_warn, vha, 0x00f8,
 452                     "Unable to create debugfs ha directory.\n");
 453                 goto out;
 454         }
 455
 456         atomic_inc(&qla2x00_dfs_root_count);
 457
 458 create_nodes:
 459         ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",
 460             S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops);
 461         if (!ha->dfs_fw_resource_cnt) {
 462                 ql_log(ql_log_warn, vha, 0x00fd,
 463                     "Unable to create debugFS fw_resource_count node.\n");
 464                 goto out;
 465         }
 466
 467         ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
 468             ha->dfs_dir, vha, &dfs_tgt_counters_ops);
 469         if (!ha->dfs_tgt_counters) {
 470                 ql_log(ql_log_warn, vha, 0xd301,
 471                     "Unable to create debugFS tgt_counters node.\n");
 472                 goto out;
 473         }
 474
 475         ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database",
 476             S_IRUSR,  ha->dfs_dir, vha, &dfs_tgt_port_database_ops);
 477         if (!ha->tgt.dfs_tgt_port_database) {
 478                 ql_log(ql_log_warn, vha, 0xd03f,
 479                     "Unable to create debugFS tgt_port_database node.\n");
 480                 goto out;
 481         }
 482
 483         ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
 484             &dfs_fce_ops);
 485         if (!ha->dfs_fce) {
 486                 ql_log(ql_log_warn, vha, 0x00f9,
 487                     "Unable to create debugfs fce node.\n");
 488                 goto out;
 489         }
 490
 491         ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",
 492                 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops);
 493         if (!ha->tgt.dfs_tgt_sess) {
 494                 ql_log(ql_log_warn, vha, 0xd040,
 495                     "Unable to create debugFS tgt_sess node.\n");
 496                 goto out;
 497         }
 498
 499         if (IS_QLA27XX(ha) || IS_QLA83XX(ha)) {
 500                 ha->tgt.dfs_naqp = debugfs_create_file("naqp",
 501                     0400, ha->dfs_dir, vha, &dfs_naqp_ops);
 502                 if (!ha->tgt.dfs_naqp) {
 503                         ql_log(ql_log_warn, vha, 0xd011,
 504                             "Unable to create debugFS naqp node.\n");
 505                         goto out;
 506                 }
 507         }
 508 out:
 509         return 0;
 510 }
 511
 512 int
 513 qla2x00_dfs_remove(scsi_qla_host_t *vha)
 514 {
 515         struct qla_hw_data *ha = vha->hw;
 516
 517         if (ha->tgt.dfs_naqp) {
 518                 debugfs_remove(ha->tgt.dfs_naqp);
 519                 ha->tgt.dfs_naqp = NULL;
 520         }
 521
 522         if (ha->tgt.dfs_tgt_sess) {
 523                 debugfs_remove(ha->tgt.dfs_tgt_sess);
 524                 ha->tgt.dfs_tgt_sess = NULL;
 525         }
 526
 527         if (ha->tgt.dfs_tgt_port_database) {
 528                 debugfs_remove(ha->tgt.dfs_tgt_port_database);
 529                 ha->tgt.dfs_tgt_port_database = NULL;
 530         }
 531
 532         if (ha->dfs_fw_resource_cnt) {
 533                 debugfs_remove(ha->dfs_fw_resource_cnt);
 534                 ha->dfs_fw_resource_cnt = NULL;
 535         }
 536
 537         if (ha->dfs_tgt_counters) {
 538                 debugfs_remove(ha->dfs_tgt_counters);
 539                 ha->dfs_tgt_counters = NULL;
 540         }
 541
 542         if (ha->dfs_fce) {
 543                 debugfs_remove(ha->dfs_fce);
 544                 ha->dfs_fce = NULL;
 545         }
 546
 547         if (ha->dfs_dir) {
 548                 debugfs_remove(ha->dfs_dir);
 549                 ha->dfs_dir = NULL;
 550                 atomic_dec(&qla2x00_dfs_root_count);
 551         }
 552
 553         if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
 554             qla2x00_dfs_root) {
 555                 debugfs_remove(qla2x00_dfs_root);
 556                 qla2x00_dfs_root = NULL;
 557         }
 558
 559         return 0;
 560 }