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, 0x705c,
  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
 168         seq_puts(s, "Target Counters\n");
 169         seq_printf(s, "qla_core_sbt_cmd = %lld\n",
 170                 vha->tgt_counters.qla_core_sbt_cmd);
 171         seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
 172                 vha->tgt_counters.qla_core_ret_sta_ctio);
 173         seq_printf(s, "qla_core_ret_ctio = %lld\n",
 174                 vha->tgt_counters.qla_core_ret_ctio);
 175         seq_printf(s, "core_qla_que_buf = %lld\n",
 176                 vha->tgt_counters.core_qla_que_buf);
 177         seq_printf(s, "core_qla_snd_status = %lld\n",
 178                 vha->tgt_counters.core_qla_snd_status);
 179         seq_printf(s, "core_qla_free_cmd = %lld\n",
 180                 vha->tgt_counters.core_qla_free_cmd);
 181         seq_printf(s, "num alloc iocb failed = %lld\n",
 182                 vha->tgt_counters.num_alloc_iocb_failed);
 183         seq_printf(s, "num term exchange sent = %lld\n",
 184                 vha->tgt_counters.num_term_xchg_sent);
 185         seq_printf(s, "num Q full sent = %lld\n",
 186                 vha->tgt_counters.num_q_full_sent);
 187
 188         /* DIF stats */
 189         seq_printf(s, "DIF Inp Bytes = %lld\n",
 190                 vha->qla_stats.qla_dif_stats.dif_input_bytes);
 191         seq_printf(s, "DIF Outp Bytes = %lld\n",
 192                 vha->qla_stats.qla_dif_stats.dif_output_bytes);
 193         seq_printf(s, "DIF Inp Req = %lld\n",
 194                 vha->qla_stats.qla_dif_stats.dif_input_requests);
 195         seq_printf(s, "DIF Outp Req = %lld\n",
 196                 vha->qla_stats.qla_dif_stats.dif_output_requests);
 197         seq_printf(s, "DIF Guard err = %d\n",
 198                 vha->qla_stats.qla_dif_stats.dif_guard_err);
 199         seq_printf(s, "DIF Ref tag err = %d\n",
 200                 vha->qla_stats.qla_dif_stats.dif_ref_tag_err);
 201         seq_printf(s, "DIF App tag err = %d\n",
 202                 vha->qla_stats.qla_dif_stats.dif_app_tag_err);
 203         return 0;
 204 }
 205
 206 static int
 207 qla_dfs_tgt_counters_open(struct inode *inode, struct file *file)
 208 {
 209         struct scsi_qla_host *vha = inode->i_private;
 210         return single_open(file, qla_dfs_tgt_counters_show, vha);
 211 }
 212
 213 static const struct file_operations dfs_tgt_counters_ops = {
 214         .open           = qla_dfs_tgt_counters_open,
 215         .read           = seq_read,
 216         .llseek         = seq_lseek,
 217         .release        = single_release,
 218 };
 219
 220 static int
 221 qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
 222 {
 223         scsi_qla_host_t *vha = s->private;
 224         uint32_t cnt;
 225         uint32_t *fce;
 226         uint64_t fce_start;
 227         struct qla_hw_data *ha = vha->hw;
 228
 229         mutex_lock(&ha->fce_mutex);
 230
 231         seq_puts(s, "FCE Trace Buffer\n");
 232         seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr);
 233         seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma);
 234         seq_puts(s, "FCE Enable Registers\n");
 235         seq_printf(s, "%08x %08x %08x %08x %08x %08x\n",
 236             ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4],
 237             ha->fce_mb[5], ha->fce_mb[6]);
 238
 239         fce = (uint32_t *) ha->fce;
 240         fce_start = (unsigned long long) ha->fce_dma;
 241         for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) {
 242                 if (cnt % 8 == 0)
 243                         seq_printf(s, "\n%llx: ",
 244                             (unsigned long long)((cnt * 4) + fce_start));
 245                 else
 246                         seq_putc(s, ' ');
 247                 seq_printf(s, "%08x", *fce++);
 248         }
 249
 250         seq_puts(s, "\nEnd\n");
 251
 252         mutex_unlock(&ha->fce_mutex);
 253
 254         return 0;
 255 }
 256
 257 static int
 258 qla2x00_dfs_fce_open(struct inode *inode, struct file *file)
 259 {
 260         scsi_qla_host_t *vha = inode->i_private;
 261         struct qla_hw_data *ha = vha->hw;
 262         int rval;
 263
 264         if (!ha->flags.fce_enabled)
 265                 goto out;
 266
 267         mutex_lock(&ha->fce_mutex);
 268
 269         /* Pause tracing to flush FCE buffers. */
 270         rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd);
 271         if (rval)
 272                 ql_dbg(ql_dbg_user, vha, 0x705c,
 273                     "DebugFS: Unable to disable FCE (%d).\n", rval);
 274
 275         ha->flags.fce_enabled = 0;
 276
 277         mutex_unlock(&ha->fce_mutex);
 278 out:
 279         return single_open(file, qla2x00_dfs_fce_show, vha);
 280 }
 281
 282 static int
 283 qla2x00_dfs_fce_release(struct inode *inode, struct file *file)
 284 {
 285         scsi_qla_host_t *vha = inode->i_private;
 286         struct qla_hw_data *ha = vha->hw;
 287         int rval;
 288
 289         if (ha->flags.fce_enabled)
 290                 goto out;
 291
 292         mutex_lock(&ha->fce_mutex);
 293
 294         /* Re-enable FCE tracing. */
 295         ha->flags.fce_enabled = 1;
 296         memset(ha->fce, 0, fce_calc_size(ha->fce_bufs));
 297         rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs,
 298             ha->fce_mb, &ha->fce_bufs);
 299         if (rval) {
 300                 ql_dbg(ql_dbg_user, vha, 0x700d,
 301                     "DebugFS: Unable to reinitialize FCE (%d).\n", rval);
 302                 ha->flags.fce_enabled = 0;
 303         }
 304
 305         mutex_unlock(&ha->fce_mutex);
 306 out:
 307         return single_release(inode, file);
 308 }
 309
 310 static const struct file_operations dfs_fce_ops = {
 311         .open           = qla2x00_dfs_fce_open,
 312         .read           = seq_read,
 313         .llseek         = seq_lseek,
 314         .release        = qla2x00_dfs_fce_release,
 315 };
 316
 317 int
 318 qla2x00_dfs_setup(scsi_qla_host_t *vha)
 319 {
 320         struct qla_hw_data *ha = vha->hw;
 321
 322         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
 323             !IS_QLA27XX(ha))
 324                 goto out;
 325         if (!ha->fce)
 326                 goto out;
 327
 328         if (qla2x00_dfs_root)
 329                 goto create_dir;
 330
 331         atomic_set(&qla2x00_dfs_root_count, 0);
 332         qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL);
 333         if (!qla2x00_dfs_root) {
 334                 ql_log(ql_log_warn, vha, 0x00f7,
 335                     "Unable to create debugfs root directory.\n");
 336                 goto out;
 337         }
 338
 339 create_dir:
 340         if (ha->dfs_dir)
 341                 goto create_nodes;
 342
 343         mutex_init(&ha->fce_mutex);
 344         ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root);
 345         if (!ha->dfs_dir) {
 346                 ql_log(ql_log_warn, vha, 0x00f8,
 347                     "Unable to create debugfs ha directory.\n");
 348                 goto out;
 349         }
 350
 351         atomic_inc(&qla2x00_dfs_root_count);
 352
 353 create_nodes:
 354         ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count",
 355             S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops);
 356         if (!ha->dfs_fw_resource_cnt) {
 357                 ql_log(ql_log_warn, vha, 0x00fd,
 358                     "Unable to create debugFS fw_resource_count node.\n");
 359                 goto out;
 360         }
 361
 362         ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
 363             ha->dfs_dir, vha, &dfs_tgt_counters_ops);
 364         if (!ha->dfs_tgt_counters) {
 365                 ql_log(ql_log_warn, vha, 0xd301,
 366                     "Unable to create debugFS tgt_counters node.\n");
 367                 goto out;
 368         }
 369
 370         ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database",
 371             S_IRUSR,  ha->dfs_dir, vha, &dfs_tgt_port_database_ops);
 372         if (!ha->tgt.dfs_tgt_port_database) {
 373                 ql_log(ql_log_warn, vha, 0xffff,
 374                     "Unable to create debugFS tgt_port_database node.\n");
 375                 goto out;
 376         }
 377
 378         ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
 379             &dfs_fce_ops);
 380         if (!ha->dfs_fce) {
 381                 ql_log(ql_log_warn, vha, 0x00f9,
 382                     "Unable to create debugfs fce node.\n");
 383                 goto out;
 384         }
 385
 386         ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess",
 387                 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops);
 388         if (!ha->tgt.dfs_tgt_sess) {
 389                 ql_log(ql_log_warn, vha, 0xffff,
 390                         "Unable to create debugFS tgt_sess node.\n");
 391                 goto out;
 392         }
 393
 394 out:
 395         return 0;
 396 }
 397
 398 int
 399 qla2x00_dfs_remove(scsi_qla_host_t *vha)
 400 {
 401         struct qla_hw_data *ha = vha->hw;
 402
 403         if (ha->tgt.dfs_tgt_sess) {
 404                 debugfs_remove(ha->tgt.dfs_tgt_sess);
 405                 ha->tgt.dfs_tgt_sess = NULL;
 406         }
 407
 408         if (ha->tgt.dfs_tgt_port_database) {
 409                 debugfs_remove(ha->tgt.dfs_tgt_port_database);
 410                 ha->tgt.dfs_tgt_port_database = NULL;
 411         }
 412
 413         if (ha->dfs_fw_resource_cnt) {
 414                 debugfs_remove(ha->dfs_fw_resource_cnt);
 415                 ha->dfs_fw_resource_cnt = NULL;
 416         }
 417
 418         if (ha->dfs_tgt_counters) {
 419                 debugfs_remove(ha->dfs_tgt_counters);
 420                 ha->dfs_tgt_counters = NULL;
 421         }
 422
 423         if (ha->dfs_fce) {
 424                 debugfs_remove(ha->dfs_fce);
 425                 ha->dfs_fce = NULL;
 426         }
 427
 428         if (ha->dfs_dir) {
 429                 debugfs_remove(ha->dfs_dir);
 430                 ha->dfs_dir = NULL;
 431                 atomic_dec(&qla2x00_dfs_root_count);
 432         }
 433
 434         if (atomic_read(&qla2x00_dfs_root_count) == 0 &&
 435             qla2x00_dfs_root) {
 436                 debugfs_remove(qla2x00_dfs_root);
 437                 qla2x00_dfs_root = NULL;
 438         }
 439
 440         return 0;
 441 }