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 if (!qpair) 197 continue; 198 qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd; 199 core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf; 200 qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio; 201 core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status; 202 qla_core_ret_sta_ctio += 203 qpair->tgt_counters.qla_core_ret_sta_ctio; 204 core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd; 205 num_q_full_sent += qpair->tgt_counters.num_q_full_sent; 206 num_alloc_iocb_failed += 207 qpair->tgt_counters.num_alloc_iocb_failed; 208 num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent; 209 } 210 211 seq_puts(s, "Target Counters\n"); 212 seq_printf(s, "qla_core_sbt_cmd = %lld\n", 213 qla_core_sbt_cmd); 214 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n", 215 qla_core_ret_sta_ctio); 216 seq_printf(s, "qla_core_ret_ctio = %lld\n", 217 qla_core_ret_ctio); 218 seq_printf(s, "core_qla_que_buf = %lld\n", 219 core_qla_que_buf); 220 seq_printf(s, "core_qla_snd_status = %lld\n", 221 core_qla_snd_status); 222 seq_printf(s, "core_qla_free_cmd = %lld\n", 223 core_qla_free_cmd); 224 seq_printf(s, "num alloc iocb failed = %lld\n", 225 num_alloc_iocb_failed); 226 seq_printf(s, "num term exchange sent = %lld\n", 227 num_term_xchg_sent); 228 seq_printf(s, "num Q full sent = %lld\n", 229 num_q_full_sent); 230 231 /* DIF stats */ 232 seq_printf(s, "DIF Inp Bytes = %lld\n", 233 vha->qla_stats.qla_dif_stats.dif_input_bytes); 234 seq_printf(s, "DIF Outp Bytes = %lld\n", 235 vha->qla_stats.qla_dif_stats.dif_output_bytes); 236 seq_printf(s, "DIF Inp Req = %lld\n", 237 vha->qla_stats.qla_dif_stats.dif_input_requests); 238 seq_printf(s, "DIF Outp Req = %lld\n", 239 vha->qla_stats.qla_dif_stats.dif_output_requests); 240 seq_printf(s, "DIF Guard err = %d\n", 241 vha->qla_stats.qla_dif_stats.dif_guard_err); 242 seq_printf(s, "DIF Ref tag err = %d\n", 243 vha->qla_stats.qla_dif_stats.dif_ref_tag_err); 244 seq_printf(s, "DIF App tag err = %d\n", 245 vha->qla_stats.qla_dif_stats.dif_app_tag_err); 246 return 0; 247 } 248 249 static int 250 qla_dfs_tgt_counters_open(struct inode *inode, struct file *file) 251 { 252 struct scsi_qla_host *vha = inode->i_private; 253 return single_open(file, qla_dfs_tgt_counters_show, vha); 254 } 255 256 static const struct file_operations dfs_tgt_counters_ops = { 257 .open = qla_dfs_tgt_counters_open, 258 .read = seq_read, 259 .llseek = seq_lseek, 260 .release = single_release, 261 }; 262 263 static int 264 qla2x00_dfs_fce_show(struct seq_file *s, void *unused) 265 { 266 scsi_qla_host_t *vha = s->private; 267 uint32_t cnt; 268 uint32_t *fce; 269 uint64_t fce_start; 270 struct qla_hw_data *ha = vha->hw; 271 272 mutex_lock(&ha->fce_mutex); 273 274 seq_puts(s, "FCE Trace Buffer\n"); 275 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr); 276 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma); 277 seq_puts(s, "FCE Enable Registers\n"); 278 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n", 279 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4], 280 ha->fce_mb[5], ha->fce_mb[6]); 281 282 fce = (uint32_t *) ha->fce; 283 fce_start = (unsigned long long) ha->fce_dma; 284 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) { 285 if (cnt % 8 == 0) 286 seq_printf(s, "\n%llx: ", 287 (unsigned long long)((cnt * 4) + fce_start)); 288 else 289 seq_putc(s, ' '); 290 seq_printf(s, "%08x", *fce++); 291 } 292 293 seq_puts(s, "\nEnd\n"); 294 295 mutex_unlock(&ha->fce_mutex); 296 297 return 0; 298 } 299 300 static int 301 qla2x00_dfs_fce_open(struct inode *inode, struct file *file) 302 { 303 scsi_qla_host_t *vha = inode->i_private; 304 struct qla_hw_data *ha = vha->hw; 305 int rval; 306 307 if (!ha->flags.fce_enabled) 308 goto out; 309 310 mutex_lock(&ha->fce_mutex); 311 312 /* Pause tracing to flush FCE buffers. */ 313 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd); 314 if (rval) 315 ql_dbg(ql_dbg_user, vha, 0x705c, 316 "DebugFS: Unable to disable FCE (%d).\n", rval); 317 318 ha->flags.fce_enabled = 0; 319 320 mutex_unlock(&ha->fce_mutex); 321 out: 322 return single_open(file, qla2x00_dfs_fce_show, vha); 323 } 324 325 static int 326 qla2x00_dfs_fce_release(struct inode *inode, struct file *file) 327 { 328 scsi_qla_host_t *vha = inode->i_private; 329 struct qla_hw_data *ha = vha->hw; 330 int rval; 331 332 if (ha->flags.fce_enabled) 333 goto out; 334 335 mutex_lock(&ha->fce_mutex); 336 337 /* Re-enable FCE tracing. */ 338 ha->flags.fce_enabled = 1; 339 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs)); 340 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs, 341 ha->fce_mb, &ha->fce_bufs); 342 if (rval) { 343 ql_dbg(ql_dbg_user, vha, 0x700d, 344 "DebugFS: Unable to reinitialize FCE (%d).\n", rval); 345 ha->flags.fce_enabled = 0; 346 } 347 348 mutex_unlock(&ha->fce_mutex); 349 out: 350 return single_release(inode, file); 351 } 352 353 static const struct file_operations dfs_fce_ops = { 354 .open = qla2x00_dfs_fce_open, 355 .read = seq_read, 356 .llseek = seq_lseek, 357 .release = qla2x00_dfs_fce_release, 358 }; 359 360 static int 361 qla_dfs_naqp_show(struct seq_file *s, void *unused) 362 { 363 struct scsi_qla_host *vha = s->private; 364 struct qla_hw_data *ha = vha->hw; 365 366 seq_printf(s, "%d\n", ha->tgt.num_act_qpairs); 367 return 0; 368 } 369 370 static int 371 qla_dfs_naqp_open(struct inode *inode, struct file *file) 372 { 373 struct scsi_qla_host *vha = inode->i_private; 374 375 return single_open(file, qla_dfs_naqp_show, vha); 376 } 377 378 static ssize_t 379 qla_dfs_naqp_write(struct file *file, const char __user *buffer, 380 size_t count, loff_t *pos) 381 { 382 struct seq_file *s = file->private_data; 383 struct scsi_qla_host *vha = s->private; 384 struct qla_hw_data *ha = vha->hw; 385 char *buf; 386 int rc = 0; 387 unsigned long num_act_qp; 388 389 if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha))) { 390 pr_err("host%ld: this adapter does not support Multi Q.", 391 vha->host_no); 392 return -EINVAL; 393 } 394 395 if (!vha->flags.qpairs_available) { 396 pr_err("host%ld: Driver is not setup with Multi Q.", 397 vha->host_no); 398 return -EINVAL; 399 } 400 buf = memdup_user_nul(buffer, count); 401 if (IS_ERR(buf)) { 402 pr_err("host%ld: fail to copy user buffer.", 403 vha->host_no); 404 return PTR_ERR(buf); 405 } 406 407 num_act_qp = simple_strtoul(buf, NULL, 0); 408 409 if (num_act_qp >= vha->hw->max_qpairs) { 410 pr_err("User set invalid number of qpairs %lu. Max = %d", 411 num_act_qp, vha->hw->max_qpairs); 412 rc = -EINVAL; 413 goto out_free; 414 } 415 416 if (num_act_qp != ha->tgt.num_act_qpairs) { 417 ha->tgt.num_act_qpairs = num_act_qp; 418 qlt_clr_qp_table(vha); 419 } 420 rc = count; 421 out_free: 422 kfree(buf); 423 return rc; 424 } 425 426 static const struct file_operations dfs_naqp_ops = { 427 .open = qla_dfs_naqp_open, 428 .read = seq_read, 429 .llseek = seq_lseek, 430 .release = single_release, 431 .write = qla_dfs_naqp_write, 432 }; 433 434 435 int 436 qla2x00_dfs_setup(scsi_qla_host_t *vha) 437 { 438 struct qla_hw_data *ha = vha->hw; 439 440 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) && 441 !IS_QLA27XX(ha)) 442 goto out; 443 if (!ha->fce) 444 goto out; 445 446 if (qla2x00_dfs_root) 447 goto create_dir; 448 449 atomic_set(&qla2x00_dfs_root_count, 0); 450 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL); 451 452 create_dir: 453 if (ha->dfs_dir) 454 goto create_nodes; 455 456 mutex_init(&ha->fce_mutex); 457 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root); 458 459 atomic_inc(&qla2x00_dfs_root_count); 460 461 create_nodes: 462 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count", 463 S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops); 464 465 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, 466 ha->dfs_dir, vha, &dfs_tgt_counters_ops); 467 468 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database", 469 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_port_database_ops); 470 471 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha, 472 &dfs_fce_ops); 473 474 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", 475 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops); 476 477 if (IS_QLA27XX(ha) || IS_QLA83XX(ha)) 478 ha->tgt.dfs_naqp = debugfs_create_file("naqp", 479 0400, ha->dfs_dir, vha, &dfs_naqp_ops); 480 out: 481 return 0; 482 } 483 484 int 485 qla2x00_dfs_remove(scsi_qla_host_t *vha) 486 { 487 struct qla_hw_data *ha = vha->hw; 488 489 if (ha->tgt.dfs_naqp) { 490 debugfs_remove(ha->tgt.dfs_naqp); 491 ha->tgt.dfs_naqp = NULL; 492 } 493 494 if (ha->tgt.dfs_tgt_sess) { 495 debugfs_remove(ha->tgt.dfs_tgt_sess); 496 ha->tgt.dfs_tgt_sess = NULL; 497 } 498 499 if (ha->tgt.dfs_tgt_port_database) { 500 debugfs_remove(ha->tgt.dfs_tgt_port_database); 501 ha->tgt.dfs_tgt_port_database = NULL; 502 } 503 504 if (ha->dfs_fw_resource_cnt) { 505 debugfs_remove(ha->dfs_fw_resource_cnt); 506 ha->dfs_fw_resource_cnt = NULL; 507 } 508 509 if (ha->dfs_tgt_counters) { 510 debugfs_remove(ha->dfs_tgt_counters); 511 ha->dfs_tgt_counters = NULL; 512 } 513 514 if (ha->dfs_fce) { 515 debugfs_remove(ha->dfs_fce); 516 ha->dfs_fce = NULL; 517 } 518 519 if (ha->dfs_dir) { 520 debugfs_remove(ha->dfs_dir); 521 ha->dfs_dir = NULL; 522 atomic_dec(&qla2x00_dfs_root_count); 523 } 524 525 if (atomic_read(&qla2x00_dfs_root_count) == 0 && 526 qla2x00_dfs_root) { 527 debugfs_remove(qla2x00_dfs_root); 528 qla2x00_dfs_root = NULL; 529 } 530 531 return 0; 532 } 533