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 uint16_t mb[MAX_IOCB_MB_REG]; 131 int rc; 132 133 rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG); 134 if (rc != QLA_SUCCESS) { 135 seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]); 136 } else { 137 seq_puts(s, "FW Resource count\n\n"); 138 seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]); 139 seq_printf(s, "current TGT exchg count[%d]\n", mb[2]); 140 seq_printf(s, "original Initiator Exchange count[%d]\n", mb[3]); 141 seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[6]); 142 seq_printf(s, "Original IOCB count[%d]\n", mb[7]); 143 seq_printf(s, "Current IOCB count[%d]\n", mb[10]); 144 seq_printf(s, "MAX VP count[%d]\n", mb[11]); 145 seq_printf(s, "MAX FCF count[%d]\n", mb[12]); 146 seq_printf(s, "Current free pageable XCB buffer cnt[%d]\n", 147 mb[20]); 148 seq_printf(s, "Original Initiator fast XCB buffer cnt[%d]\n", 149 mb[21]); 150 seq_printf(s, "Current free Initiator fast XCB buffer cnt[%d]\n", 151 mb[22]); 152 seq_printf(s, "Original Target fast XCB buffer cnt[%d]\n", 153 mb[23]); 154 155 } 156 157 return 0; 158 } 159 160 static int 161 qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file) 162 { 163 struct scsi_qla_host *vha = inode->i_private; 164 return single_open(file, qla_dfs_fw_resource_cnt_show, vha); 165 } 166 167 static const struct file_operations dfs_fw_resource_cnt_ops = { 168 .open = qla_dfs_fw_resource_cnt_open, 169 .read = seq_read, 170 .llseek = seq_lseek, 171 .release = single_release, 172 }; 173 174 static int 175 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused) 176 { 177 struct scsi_qla_host *vha = s->private; 178 struct qla_qpair *qpair = vha->hw->base_qpair; 179 uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio, 180 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd, 181 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent; 182 u16 i; 183 184 qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd; 185 core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf; 186 qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio; 187 core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status; 188 qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio; 189 core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd; 190 num_q_full_sent = qpair->tgt_counters.num_q_full_sent; 191 num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed; 192 num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent; 193 194 for (i = 0; i < vha->hw->max_qpairs; i++) { 195 qpair = vha->hw->queue_pair_map[i]; 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 return single_open(file, qla_dfs_tgt_counters_show, vha); 252 } 253 254 static const struct file_operations dfs_tgt_counters_ops = { 255 .open = qla_dfs_tgt_counters_open, 256 .read = seq_read, 257 .llseek = seq_lseek, 258 .release = single_release, 259 }; 260 261 static int 262 qla2x00_dfs_fce_show(struct seq_file *s, void *unused) 263 { 264 scsi_qla_host_t *vha = s->private; 265 uint32_t cnt; 266 uint32_t *fce; 267 uint64_t fce_start; 268 struct qla_hw_data *ha = vha->hw; 269 270 mutex_lock(&ha->fce_mutex); 271 272 seq_puts(s, "FCE Trace Buffer\n"); 273 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr); 274 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma); 275 seq_puts(s, "FCE Enable Registers\n"); 276 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n", 277 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4], 278 ha->fce_mb[5], ha->fce_mb[6]); 279 280 fce = (uint32_t *) ha->fce; 281 fce_start = (unsigned long long) ha->fce_dma; 282 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) { 283 if (cnt % 8 == 0) 284 seq_printf(s, "\n%llx: ", 285 (unsigned long long)((cnt * 4) + fce_start)); 286 else 287 seq_putc(s, ' '); 288 seq_printf(s, "%08x", *fce++); 289 } 290 291 seq_puts(s, "\nEnd\n"); 292 293 mutex_unlock(&ha->fce_mutex); 294 295 return 0; 296 } 297 298 static int 299 qla2x00_dfs_fce_open(struct inode *inode, struct file *file) 300 { 301 scsi_qla_host_t *vha = inode->i_private; 302 struct qla_hw_data *ha = vha->hw; 303 int rval; 304 305 if (!ha->flags.fce_enabled) 306 goto out; 307 308 mutex_lock(&ha->fce_mutex); 309 310 /* Pause tracing to flush FCE buffers. */ 311 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd); 312 if (rval) 313 ql_dbg(ql_dbg_user, vha, 0x705c, 314 "DebugFS: Unable to disable FCE (%d).\n", rval); 315 316 ha->flags.fce_enabled = 0; 317 318 mutex_unlock(&ha->fce_mutex); 319 out: 320 return single_open(file, qla2x00_dfs_fce_show, vha); 321 } 322 323 static int 324 qla2x00_dfs_fce_release(struct inode *inode, struct file *file) 325 { 326 scsi_qla_host_t *vha = inode->i_private; 327 struct qla_hw_data *ha = vha->hw; 328 int rval; 329 330 if (ha->flags.fce_enabled) 331 goto out; 332 333 mutex_lock(&ha->fce_mutex); 334 335 /* Re-enable FCE tracing. */ 336 ha->flags.fce_enabled = 1; 337 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs)); 338 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs, 339 ha->fce_mb, &ha->fce_bufs); 340 if (rval) { 341 ql_dbg(ql_dbg_user, vha, 0x700d, 342 "DebugFS: Unable to reinitialize FCE (%d).\n", rval); 343 ha->flags.fce_enabled = 0; 344 } 345 346 mutex_unlock(&ha->fce_mutex); 347 out: 348 return single_release(inode, file); 349 } 350 351 static const struct file_operations dfs_fce_ops = { 352 .open = qla2x00_dfs_fce_open, 353 .read = seq_read, 354 .llseek = seq_lseek, 355 .release = qla2x00_dfs_fce_release, 356 }; 357 358 static int 359 qla_dfs_naqp_show(struct seq_file *s, void *unused) 360 { 361 struct scsi_qla_host *vha = s->private; 362 struct qla_hw_data *ha = vha->hw; 363 364 seq_printf(s, "%d\n", ha->tgt.num_act_qpairs); 365 return 0; 366 } 367 368 static int 369 qla_dfs_naqp_open(struct inode *inode, struct file *file) 370 { 371 struct scsi_qla_host *vha = inode->i_private; 372 373 return single_open(file, qla_dfs_naqp_show, vha); 374 } 375 376 static ssize_t 377 qla_dfs_naqp_write(struct file *file, const char __user *buffer, 378 size_t count, loff_t *pos) 379 { 380 struct seq_file *s = file->private_data; 381 struct scsi_qla_host *vha = s->private; 382 struct qla_hw_data *ha = vha->hw; 383 char *buf; 384 int rc = 0; 385 unsigned long num_act_qp; 386 387 if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha))) { 388 pr_err("host%ld: this adapter does not support Multi Q.", 389 vha->host_no); 390 return -EINVAL; 391 } 392 393 if (!vha->flags.qpairs_available) { 394 pr_err("host%ld: Driver is not setup with Multi Q.", 395 vha->host_no); 396 return -EINVAL; 397 } 398 buf = memdup_user_nul(buffer, count); 399 if (IS_ERR(buf)) { 400 pr_err("host%ld: fail to copy user buffer.", 401 vha->host_no); 402 return PTR_ERR(buf); 403 } 404 405 num_act_qp = simple_strtoul(buf, NULL, 0); 406 407 if (num_act_qp >= vha->hw->max_qpairs) { 408 pr_err("User set invalid number of qpairs %lu. Max = %d", 409 num_act_qp, vha->hw->max_qpairs); 410 rc = -EINVAL; 411 goto out_free; 412 } 413 414 if (num_act_qp != ha->tgt.num_act_qpairs) { 415 ha->tgt.num_act_qpairs = num_act_qp; 416 qlt_clr_qp_table(vha); 417 } 418 rc = count; 419 out_free: 420 kfree(buf); 421 return rc; 422 } 423 424 static const struct file_operations dfs_naqp_ops = { 425 .open = qla_dfs_naqp_open, 426 .read = seq_read, 427 .llseek = seq_lseek, 428 .release = single_release, 429 .write = qla_dfs_naqp_write, 430 }; 431 432 433 int 434 qla2x00_dfs_setup(scsi_qla_host_t *vha) 435 { 436 struct qla_hw_data *ha = vha->hw; 437 438 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) && 439 !IS_QLA27XX(ha)) 440 goto out; 441 if (!ha->fce) 442 goto out; 443 444 if (qla2x00_dfs_root) 445 goto create_dir; 446 447 atomic_set(&qla2x00_dfs_root_count, 0); 448 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL); 449 if (!qla2x00_dfs_root) { 450 ql_log(ql_log_warn, vha, 0x00f7, 451 "Unable to create debugfs root directory.\n"); 452 goto out; 453 } 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 if (!ha->dfs_dir) { 462 ql_log(ql_log_warn, vha, 0x00f8, 463 "Unable to create debugfs ha directory.\n"); 464 goto out; 465 } 466 467 atomic_inc(&qla2x00_dfs_root_count); 468 469 create_nodes: 470 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count", 471 S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops); 472 if (!ha->dfs_fw_resource_cnt) { 473 ql_log(ql_log_warn, vha, 0x00fd, 474 "Unable to create debugFS fw_resource_count node.\n"); 475 goto out; 476 } 477 478 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, 479 ha->dfs_dir, vha, &dfs_tgt_counters_ops); 480 if (!ha->dfs_tgt_counters) { 481 ql_log(ql_log_warn, vha, 0xd301, 482 "Unable to create debugFS tgt_counters node.\n"); 483 goto out; 484 } 485 486 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database", 487 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_port_database_ops); 488 if (!ha->tgt.dfs_tgt_port_database) { 489 ql_log(ql_log_warn, vha, 0xd03f, 490 "Unable to create debugFS tgt_port_database node.\n"); 491 goto out; 492 } 493 494 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha, 495 &dfs_fce_ops); 496 if (!ha->dfs_fce) { 497 ql_log(ql_log_warn, vha, 0x00f9, 498 "Unable to create debugfs fce node.\n"); 499 goto out; 500 } 501 502 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", 503 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops); 504 if (!ha->tgt.dfs_tgt_sess) { 505 ql_log(ql_log_warn, vha, 0xd040, 506 "Unable to create debugFS tgt_sess node.\n"); 507 goto out; 508 } 509 510 if (IS_QLA27XX(ha) || IS_QLA83XX(ha)) { 511 ha->tgt.dfs_naqp = debugfs_create_file("naqp", 512 0400, ha->dfs_dir, vha, &dfs_naqp_ops); 513 if (!ha->tgt.dfs_naqp) { 514 ql_log(ql_log_warn, vha, 0xd011, 515 "Unable to create debugFS naqp node.\n"); 516 goto out; 517 } 518 } 519 out: 520 return 0; 521 } 522 523 int 524 qla2x00_dfs_remove(scsi_qla_host_t *vha) 525 { 526 struct qla_hw_data *ha = vha->hw; 527 528 if (ha->tgt.dfs_naqp) { 529 debugfs_remove(ha->tgt.dfs_naqp); 530 ha->tgt.dfs_naqp = NULL; 531 } 532 533 if (ha->tgt.dfs_tgt_sess) { 534 debugfs_remove(ha->tgt.dfs_tgt_sess); 535 ha->tgt.dfs_tgt_sess = NULL; 536 } 537 538 if (ha->tgt.dfs_tgt_port_database) { 539 debugfs_remove(ha->tgt.dfs_tgt_port_database); 540 ha->tgt.dfs_tgt_port_database = NULL; 541 } 542 543 if (ha->dfs_fw_resource_cnt) { 544 debugfs_remove(ha->dfs_fw_resource_cnt); 545 ha->dfs_fw_resource_cnt = NULL; 546 } 547 548 if (ha->dfs_tgt_counters) { 549 debugfs_remove(ha->dfs_tgt_counters); 550 ha->dfs_tgt_counters = NULL; 551 } 552 553 if (ha->dfs_fce) { 554 debugfs_remove(ha->dfs_fce); 555 ha->dfs_fce = NULL; 556 } 557 558 if (ha->dfs_dir) { 559 debugfs_remove(ha->dfs_dir); 560 ha->dfs_dir = NULL; 561 atomic_dec(&qla2x00_dfs_root_count); 562 } 563 564 if (atomic_read(&qla2x00_dfs_root_count) == 0 && 565 qla2x00_dfs_root) { 566 debugfs_remove(qla2x00_dfs_root); 567 qla2x00_dfs_root = NULL; 568 } 569 570 return 0; 571 } 572