/drivers/scsi/qla2xxx/qla_dfs.c
C | 531 lines | 433 code | 89 blank | 9 comment | 45 complexity | 70c2103c7fa8588a8e31c4f9c059327b MD5 | raw file
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 12static struct dentry *qla2x00_dfs_root; 13static atomic_t qla2x00_dfs_root_count; 14 15static int 16qla2x00_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 40static int 41qla2x00_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 48static 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 55static int 56qla2x00_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, *gid; 61 dma_addr_t gid_list_dma; 62 fc_port_t fc_port; 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 gid = gid_list; 85 86 seq_puts(s, "Port Name Port ID Loop ID\n"); 87 88 for (i = 0; i < entries; i++) { 89 loop_id = le16_to_cpu(gid->loop_id); 90 memset(&fc_port, 0, sizeof(fc_port_t)); 91 92 fc_port.loop_id = loop_id; 93 94 rc = qla24xx_gpdb_wait(vha, &fc_port, 0); 95 seq_printf(s, "%8phC %02x%02x%02x %d\n", 96 fc_port.port_name, fc_port.d_id.b.domain, 97 fc_port.d_id.b.area, fc_port.d_id.b.al_pa, 98 fc_port.loop_id); 99 gid = (void *)gid + ha->gid_list_info_size; 100 } 101out_free_id_list: 102 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 103 gid_list, gid_list_dma); 104 } 105 106 return 0; 107} 108 109static int 110qla2x00_dfs_tgt_port_database_open(struct inode *inode, struct file *file) 111{ 112 scsi_qla_host_t *vha = inode->i_private; 113 114 return single_open(file, qla2x00_dfs_tgt_port_database_show, vha); 115} 116 117static const struct file_operations dfs_tgt_port_database_ops = { 118 .open = qla2x00_dfs_tgt_port_database_open, 119 .read = seq_read, 120 .llseek = seq_lseek, 121 .release = single_release, 122}; 123 124static int 125qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused) 126{ 127 struct scsi_qla_host *vha = s->private; 128 uint16_t mb[MAX_IOCB_MB_REG]; 129 int rc; 130 131 rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG); 132 if (rc != QLA_SUCCESS) { 133 seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]); 134 } else { 135 seq_puts(s, "FW Resource count\n\n"); 136 seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]); 137 seq_printf(s, "Current TGT exchg count[%d]\n", mb[2]); 138 seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[3]); 139 seq_printf(s, "Original Initiator Exchange count[%d]\n", mb[6]); 140 seq_printf(s, "Current IOCB count[%d]\n", mb[7]); 141 seq_printf(s, "Original IOCB count[%d]\n", mb[10]); 142 seq_printf(s, "MAX VP count[%d]\n", mb[11]); 143 seq_printf(s, "MAX FCF count[%d]\n", mb[12]); 144 seq_printf(s, "Current free pageable XCB buffer cnt[%d]\n", 145 mb[20]); 146 seq_printf(s, "Original Initiator fast XCB buffer cnt[%d]\n", 147 mb[21]); 148 seq_printf(s, "Current free Initiator fast XCB buffer cnt[%d]\n", 149 mb[22]); 150 seq_printf(s, "Original Target fast XCB buffer cnt[%d]\n", 151 mb[23]); 152 } 153 154 return 0; 155} 156 157static int 158qla_dfs_fw_resource_cnt_open(struct inode *inode, struct file *file) 159{ 160 struct scsi_qla_host *vha = inode->i_private; 161 162 return single_open(file, qla_dfs_fw_resource_cnt_show, vha); 163} 164 165static const struct file_operations dfs_fw_resource_cnt_ops = { 166 .open = qla_dfs_fw_resource_cnt_open, 167 .read = seq_read, 168 .llseek = seq_lseek, 169 .release = single_release, 170}; 171 172static int 173qla_dfs_tgt_counters_show(struct seq_file *s, void *unused) 174{ 175 struct scsi_qla_host *vha = s->private; 176 struct qla_qpair *qpair = vha->hw->base_qpair; 177 uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio, 178 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd, 179 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent; 180 u16 i; 181 182 qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd; 183 core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf; 184 qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio; 185 core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status; 186 qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio; 187 core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd; 188 num_q_full_sent = qpair->tgt_counters.num_q_full_sent; 189 num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed; 190 num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent; 191 192 for (i = 0; i < vha->hw->max_qpairs; i++) { 193 qpair = vha->hw->queue_pair_map[i]; 194 if (!qpair) 195 continue; 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 247static int 248qla_dfs_tgt_counters_open(struct inode *inode, struct file *file) 249{ 250 struct scsi_qla_host *vha = inode->i_private; 251 252 return single_open(file, qla_dfs_tgt_counters_show, vha); 253} 254 255static const struct file_operations dfs_tgt_counters_ops = { 256 .open = qla_dfs_tgt_counters_open, 257 .read = seq_read, 258 .llseek = seq_lseek, 259 .release = single_release, 260}; 261 262static int 263qla2x00_dfs_fce_show(struct seq_file *s, void *unused) 264{ 265 scsi_qla_host_t *vha = s->private; 266 uint32_t cnt; 267 uint32_t *fce; 268 uint64_t fce_start; 269 struct qla_hw_data *ha = vha->hw; 270 271 mutex_lock(&ha->fce_mutex); 272 273 seq_puts(s, "FCE Trace Buffer\n"); 274 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr); 275 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma); 276 seq_puts(s, "FCE Enable Registers\n"); 277 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n", 278 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4], 279 ha->fce_mb[5], ha->fce_mb[6]); 280 281 fce = (uint32_t *) ha->fce; 282 fce_start = (unsigned long long) ha->fce_dma; 283 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) { 284 if (cnt % 8 == 0) 285 seq_printf(s, "\n%llx: ", 286 (unsigned long long)((cnt * 4) + fce_start)); 287 else 288 seq_putc(s, ' '); 289 seq_printf(s, "%08x", *fce++); 290 } 291 292 seq_puts(s, "\nEnd\n"); 293 294 mutex_unlock(&ha->fce_mutex); 295 296 return 0; 297} 298 299static int 300qla2x00_dfs_fce_open(struct inode *inode, struct file *file) 301{ 302 scsi_qla_host_t *vha = inode->i_private; 303 struct qla_hw_data *ha = vha->hw; 304 int rval; 305 306 if (!ha->flags.fce_enabled) 307 goto out; 308 309 mutex_lock(&ha->fce_mutex); 310 311 /* Pause tracing to flush FCE buffers. */ 312 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd); 313 if (rval) 314 ql_dbg(ql_dbg_user, vha, 0x705c, 315 "DebugFS: Unable to disable FCE (%d).\n", rval); 316 317 ha->flags.fce_enabled = 0; 318 319 mutex_unlock(&ha->fce_mutex); 320out: 321 return single_open(file, qla2x00_dfs_fce_show, vha); 322} 323 324static int 325qla2x00_dfs_fce_release(struct inode *inode, struct file *file) 326{ 327 scsi_qla_host_t *vha = inode->i_private; 328 struct qla_hw_data *ha = vha->hw; 329 int rval; 330 331 if (ha->flags.fce_enabled) 332 goto out; 333 334 mutex_lock(&ha->fce_mutex); 335 336 /* Re-enable FCE tracing. */ 337 ha->flags.fce_enabled = 1; 338 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs)); 339 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs, 340 ha->fce_mb, &ha->fce_bufs); 341 if (rval) { 342 ql_dbg(ql_dbg_user, vha, 0x700d, 343 "DebugFS: Unable to reinitialize FCE (%d).\n", rval); 344 ha->flags.fce_enabled = 0; 345 } 346 347 mutex_unlock(&ha->fce_mutex); 348out: 349 return single_release(inode, file); 350} 351 352static const struct file_operations dfs_fce_ops = { 353 .open = qla2x00_dfs_fce_open, 354 .read = seq_read, 355 .llseek = seq_lseek, 356 .release = qla2x00_dfs_fce_release, 357}; 358 359static int 360qla_dfs_naqp_show(struct seq_file *s, void *unused) 361{ 362 struct scsi_qla_host *vha = s->private; 363 struct qla_hw_data *ha = vha->hw; 364 365 seq_printf(s, "%d\n", ha->tgt.num_act_qpairs); 366 return 0; 367} 368 369static int 370qla_dfs_naqp_open(struct inode *inode, struct file *file) 371{ 372 struct scsi_qla_host *vha = inode->i_private; 373 374 return single_open(file, qla_dfs_naqp_show, vha); 375} 376 377static ssize_t 378qla_dfs_naqp_write(struct file *file, const char __user *buffer, 379 size_t count, loff_t *pos) 380{ 381 struct seq_file *s = file->private_data; 382 struct scsi_qla_host *vha = s->private; 383 struct qla_hw_data *ha = vha->hw; 384 char *buf; 385 int rc = 0; 386 unsigned long num_act_qp; 387 388 if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) { 389 pr_err("host%ld: this adapter does not support Multi Q.", 390 vha->host_no); 391 return -EINVAL; 392 } 393 394 if (!vha->flags.qpairs_available) { 395 pr_err("host%ld: Driver is not setup with Multi Q.", 396 vha->host_no); 397 return -EINVAL; 398 } 399 buf = memdup_user_nul(buffer, count); 400 if (IS_ERR(buf)) { 401 pr_err("host%ld: fail to copy user buffer.", 402 vha->host_no); 403 return PTR_ERR(buf); 404 } 405 406 num_act_qp = simple_strtoul(buf, NULL, 0); 407 408 if (num_act_qp >= vha->hw->max_qpairs) { 409 pr_err("User set invalid number of qpairs %lu. Max = %d", 410 num_act_qp, vha->hw->max_qpairs); 411 rc = -EINVAL; 412 goto out_free; 413 } 414 415 if (num_act_qp != ha->tgt.num_act_qpairs) { 416 ha->tgt.num_act_qpairs = num_act_qp; 417 qlt_clr_qp_table(vha); 418 } 419 rc = count; 420out_free: 421 kfree(buf); 422 return rc; 423} 424 425static const struct file_operations dfs_naqp_ops = { 426 .open = qla_dfs_naqp_open, 427 .read = seq_read, 428 .llseek = seq_lseek, 429 .release = single_release, 430 .write = qla_dfs_naqp_write, 431}; 432 433 434int 435qla2x00_dfs_setup(scsi_qla_host_t *vha) 436{ 437 struct qla_hw_data *ha = vha->hw; 438 439 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) && 440 !IS_QLA27XX(ha) && !IS_QLA28XX(ha)) 441 goto out; 442 if (!ha->fce) 443 goto out; 444 445 if (qla2x00_dfs_root) 446 goto create_dir; 447 448 atomic_set(&qla2x00_dfs_root_count, 0); 449 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL); 450 451create_dir: 452 if (ha->dfs_dir) 453 goto create_nodes; 454 455 mutex_init(&ha->fce_mutex); 456 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root); 457 458 atomic_inc(&qla2x00_dfs_root_count); 459 460create_nodes: 461 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count", 462 S_IRUSR, ha->dfs_dir, vha, &dfs_fw_resource_cnt_ops); 463 464 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, 465 ha->dfs_dir, vha, &dfs_tgt_counters_ops); 466 467 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database", 468 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_port_database_ops); 469 470 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha, 471 &dfs_fce_ops); 472 473 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", 474 S_IRUSR, ha->dfs_dir, vha, &dfs_tgt_sess_ops); 475 476 if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) 477 ha->tgt.dfs_naqp = debugfs_create_file("naqp", 478 0400, ha->dfs_dir, vha, &dfs_naqp_ops); 479out: 480 return 0; 481} 482 483int 484qla2x00_dfs_remove(scsi_qla_host_t *vha) 485{ 486 struct qla_hw_data *ha = vha->hw; 487 488 if (ha->tgt.dfs_naqp) { 489 debugfs_remove(ha->tgt.dfs_naqp); 490 ha->tgt.dfs_naqp = NULL; 491 } 492 493 if (ha->tgt.dfs_tgt_sess) { 494 debugfs_remove(ha->tgt.dfs_tgt_sess); 495 ha->tgt.dfs_tgt_sess = NULL; 496 } 497 498 if (ha->tgt.dfs_tgt_port_database) { 499 debugfs_remove(ha->tgt.dfs_tgt_port_database); 500 ha->tgt.dfs_tgt_port_database = NULL; 501 } 502 503 if (ha->dfs_fw_resource_cnt) { 504 debugfs_remove(ha->dfs_fw_resource_cnt); 505 ha->dfs_fw_resource_cnt = NULL; 506 } 507 508 if (ha->dfs_tgt_counters) { 509 debugfs_remove(ha->dfs_tgt_counters); 510 ha->dfs_tgt_counters = NULL; 511 } 512 513 if (ha->dfs_fce) { 514 debugfs_remove(ha->dfs_fce); 515 ha->dfs_fce = NULL; 516 } 517 518 if (ha->dfs_dir) { 519 debugfs_remove(ha->dfs_dir); 520 ha->dfs_dir = NULL; 521 atomic_dec(&qla2x00_dfs_root_count); 522 } 523 524 if (atomic_read(&qla2x00_dfs_root_count) == 0 && 525 qla2x00_dfs_root) { 526 debugfs_remove(qla2x00_dfs_root); 527 qla2x00_dfs_root = NULL; 528 } 529 530 return 0; 531}