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 } 536