1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * QLogic Fibre Channel HBA Driver 4 * Copyright (c) 2003-2014 QLogic Corporation 5 */ 6 #include "qla_def.h" 7 8 #include <linux/debugfs.h> 9 #include <linux/seq_file.h> 10 11 static struct dentry *qla2x00_dfs_root; 12 static atomic_t qla2x00_dfs_root_count; 13 14 #define QLA_DFS_RPORT_DEVLOSS_TMO 1 15 16 static int 17 qla_dfs_rport_get(struct fc_port *fp, int attr_id, u64 *val) 18 { 19 switch (attr_id) { 20 case QLA_DFS_RPORT_DEVLOSS_TMO: 21 /* Only supported for FC-NVMe devices that are registered. */ 22 if (!(fp->nvme_flag & NVME_FLAG_REGISTERED)) 23 return -EIO; 24 *val = fp->nvme_remote_port->dev_loss_tmo; 25 break; 26 default: 27 return -EINVAL; 28 } 29 return 0; 30 } 31 32 static int 33 qla_dfs_rport_set(struct fc_port *fp, int attr_id, u64 val) 34 { 35 switch (attr_id) { 36 case QLA_DFS_RPORT_DEVLOSS_TMO: 37 /* Only supported for FC-NVMe devices that are registered. */ 38 if (!(fp->nvme_flag & NVME_FLAG_REGISTERED)) 39 return -EIO; 40 #if (IS_ENABLED(CONFIG_NVME_FC)) 41 return nvme_fc_set_remoteport_devloss(fp->nvme_remote_port, 42 val); 43 #else /* CONFIG_NVME_FC */ 44 return -EINVAL; 45 #endif /* CONFIG_NVME_FC */ 46 default: 47 return -EINVAL; 48 } 49 return 0; 50 } 51 52 #define DEFINE_QLA_DFS_RPORT_RW_ATTR(_attr_id, _attr) \ 53 static int qla_dfs_rport_##_attr##_get(void *data, u64 *val) \ 54 { \ 55 struct fc_port *fp = data; \ 56 return qla_dfs_rport_get(fp, _attr_id, val); \ 57 } \ 58 static int qla_dfs_rport_##_attr##_set(void *data, u64 val) \ 59 { \ 60 struct fc_port *fp = data; \ 61 return qla_dfs_rport_set(fp, _attr_id, val); \ 62 } \ 63 DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_##_attr##_fops, \ 64 qla_dfs_rport_##_attr##_get, \ 65 qla_dfs_rport_##_attr##_set, "%llu\n") 66 67 /* 68 * Wrapper for getting fc_port fields. 69 * 70 * _attr : Attribute name. 71 * _get_val : Accessor macro to retrieve the value. 72 */ 73 #define DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val) \ 74 static int qla_dfs_rport_field_##_attr##_get(void *data, u64 *val) \ 75 { \ 76 struct fc_port *fp = data; \ 77 *val = _get_val; \ 78 return 0; \ 79 } \ 80 DEFINE_DEBUGFS_ATTRIBUTE(qla_dfs_rport_field_##_attr##_fops, \ 81 qla_dfs_rport_field_##_attr##_get, \ 82 NULL, "%llu\n") 83 84 #define DEFINE_QLA_DFS_RPORT_ACCESS(_attr, _get_val) \ 85 DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, _get_val) 86 87 #define DEFINE_QLA_DFS_RPORT_FIELD(_attr) \ 88 DEFINE_QLA_DFS_RPORT_FIELD_GET(_attr, fp->_attr) 89 90 DEFINE_QLA_DFS_RPORT_RW_ATTR(QLA_DFS_RPORT_DEVLOSS_TMO, dev_loss_tmo); 91 92 DEFINE_QLA_DFS_RPORT_FIELD(disc_state); 93 DEFINE_QLA_DFS_RPORT_FIELD(scan_state); 94 DEFINE_QLA_DFS_RPORT_FIELD(fw_login_state); 95 DEFINE_QLA_DFS_RPORT_FIELD(login_pause); 96 DEFINE_QLA_DFS_RPORT_FIELD(flags); 97 DEFINE_QLA_DFS_RPORT_FIELD(nvme_flag); 98 DEFINE_QLA_DFS_RPORT_FIELD(last_rscn_gen); 99 DEFINE_QLA_DFS_RPORT_FIELD(rscn_gen); 100 DEFINE_QLA_DFS_RPORT_FIELD(login_gen); 101 DEFINE_QLA_DFS_RPORT_FIELD(loop_id); 102 DEFINE_QLA_DFS_RPORT_FIELD_GET(port_id, fp->d_id.b24); 103 DEFINE_QLA_DFS_RPORT_FIELD_GET(sess_kref, kref_read(&fp->sess_kref)); 104 105 void 106 qla2x00_dfs_create_rport(scsi_qla_host_t *vha, struct fc_port *fp) 107 { 108 char wwn[32]; 109 110 #define QLA_CREATE_RPORT_FIELD_ATTR(_attr) \ 111 debugfs_create_file(#_attr, 0400, fp->dfs_rport_dir, \ 112 fp, &qla_dfs_rport_field_##_attr##_fops) 113 114 if (!vha->dfs_rport_root || fp->dfs_rport_dir) 115 return; 116 117 sprintf(wwn, "pn-%016llx", wwn_to_u64(fp->port_name)); 118 fp->dfs_rport_dir = debugfs_create_dir(wwn, vha->dfs_rport_root); 119 if (!fp->dfs_rport_dir) 120 return; 121 if (NVME_TARGET(vha->hw, fp)) 122 debugfs_create_file("dev_loss_tmo", 0600, fp->dfs_rport_dir, 123 fp, &qla_dfs_rport_dev_loss_tmo_fops); 124 125 QLA_CREATE_RPORT_FIELD_ATTR(disc_state); 126 QLA_CREATE_RPORT_FIELD_ATTR(scan_state); 127 QLA_CREATE_RPORT_FIELD_ATTR(fw_login_state); 128 QLA_CREATE_RPORT_FIELD_ATTR(login_pause); 129 QLA_CREATE_RPORT_FIELD_ATTR(flags); 130 QLA_CREATE_RPORT_FIELD_ATTR(nvme_flag); 131 QLA_CREATE_RPORT_FIELD_ATTR(last_rscn_gen); 132 QLA_CREATE_RPORT_FIELD_ATTR(rscn_gen); 133 QLA_CREATE_RPORT_FIELD_ATTR(login_gen); 134 QLA_CREATE_RPORT_FIELD_ATTR(loop_id); 135 QLA_CREATE_RPORT_FIELD_ATTR(port_id); 136 QLA_CREATE_RPORT_FIELD_ATTR(sess_kref); 137 } 138 139 void 140 qla2x00_dfs_remove_rport(scsi_qla_host_t *vha, struct fc_port *fp) 141 { 142 if (!vha->dfs_rport_root || !fp->dfs_rport_dir) 143 return; 144 debugfs_remove_recursive(fp->dfs_rport_dir); 145 fp->dfs_rport_dir = NULL; 146 } 147 148 static int 149 qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused) 150 { 151 scsi_qla_host_t *vha = s->private; 152 struct qla_hw_data *ha = vha->hw; 153 unsigned long flags; 154 struct fc_port *sess = NULL; 155 struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; 156 157 seq_printf(s, "%s\n", vha->host_str); 158 if (tgt) { 159 seq_puts(s, "Port ID Port Name Handle\n"); 160 161 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 162 list_for_each_entry(sess, &vha->vp_fcports, list) 163 seq_printf(s, "%02x:%02x:%02x %8phC %d\n", 164 sess->d_id.b.domain, sess->d_id.b.area, 165 sess->d_id.b.al_pa, sess->port_name, 166 sess->loop_id); 167 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 168 } 169 170 return 0; 171 } 172 173 DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_sess); 174 175 static int 176 qla2x00_dfs_tgt_port_database_show(struct seq_file *s, void *unused) 177 { 178 scsi_qla_host_t *vha = s->private; 179 struct qla_hw_data *ha = vha->hw; 180 struct gid_list_info *gid_list; 181 dma_addr_t gid_list_dma; 182 fc_port_t fc_port; 183 char *id_iter; 184 int rc, i; 185 uint16_t entries, loop_id; 186 187 seq_printf(s, "%s\n", vha->host_str); 188 gid_list = dma_alloc_coherent(&ha->pdev->dev, 189 qla2x00_gid_list_size(ha), 190 &gid_list_dma, GFP_KERNEL); 191 if (!gid_list) { 192 ql_dbg(ql_dbg_user, vha, 0x7018, 193 "DMA allocation failed for %u\n", 194 qla2x00_gid_list_size(ha)); 195 return 0; 196 } 197 198 rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, 199 &entries); 200 if (rc != QLA_SUCCESS) 201 goto out_free_id_list; 202 203 id_iter = (char *)gid_list; 204 205 seq_puts(s, "Port Name Port ID Loop ID\n"); 206 207 for (i = 0; i < entries; i++) { 208 struct gid_list_info *gid = 209 (struct gid_list_info *)id_iter; 210 loop_id = le16_to_cpu(gid->loop_id); 211 memset(&fc_port, 0, sizeof(fc_port_t)); 212 213 fc_port.loop_id = loop_id; 214 215 rc = qla24xx_gpdb_wait(vha, &fc_port, 0); 216 seq_printf(s, "%8phC %02x%02x%02x %d\n", 217 fc_port.port_name, fc_port.d_id.b.domain, 218 fc_port.d_id.b.area, fc_port.d_id.b.al_pa, 219 fc_port.loop_id); 220 id_iter += ha->gid_list_info_size; 221 } 222 out_free_id_list: 223 dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), 224 gid_list, gid_list_dma); 225 226 return 0; 227 } 228 229 DEFINE_SHOW_ATTRIBUTE(qla2x00_dfs_tgt_port_database); 230 231 static int 232 qla_dfs_fw_resource_cnt_show(struct seq_file *s, void *unused) 233 { 234 struct scsi_qla_host *vha = s->private; 235 uint16_t mb[MAX_IOCB_MB_REG]; 236 int rc; 237 struct qla_hw_data *ha = vha->hw; 238 u16 iocbs_used, i, exch_used; 239 240 rc = qla24xx_res_count_wait(vha, mb, SIZEOF_IOCB_MB_REG); 241 if (rc != QLA_SUCCESS) { 242 seq_printf(s, "Mailbox Command failed %d, mb %#x", rc, mb[0]); 243 } else { 244 seq_puts(s, "FW Resource count\n\n"); 245 seq_printf(s, "Original TGT exchg count[%d]\n", mb[1]); 246 seq_printf(s, "Current TGT exchg count[%d]\n", mb[2]); 247 seq_printf(s, "Current Initiator Exchange count[%d]\n", mb[3]); 248 seq_printf(s, "Original Initiator Exchange count[%d]\n", mb[6]); 249 seq_printf(s, "Current IOCB count[%d]\n", mb[7]); 250 seq_printf(s, "Original IOCB count[%d]\n", mb[10]); 251 seq_printf(s, "MAX VP count[%d]\n", mb[11]); 252 seq_printf(s, "MAX FCF count[%d]\n", mb[12]); 253 seq_printf(s, "Current free pageable XCB buffer cnt[%d]\n", 254 mb[20]); 255 seq_printf(s, "Original Initiator fast XCB buffer cnt[%d]\n", 256 mb[21]); 257 seq_printf(s, "Current free Initiator fast XCB buffer cnt[%d]\n", 258 mb[22]); 259 seq_printf(s, "Original Target fast XCB buffer cnt[%d]\n", 260 mb[23]); 261 } 262 263 if (ql2xenforce_iocb_limit) { 264 /* lock is not require. It's an estimate. */ 265 iocbs_used = ha->base_qpair->fwres.iocbs_used; 266 exch_used = ha->base_qpair->fwres.exch_used; 267 for (i = 0; i < ha->max_qpairs; i++) { 268 if (ha->queue_pair_map[i]) { 269 iocbs_used += ha->queue_pair_map[i]->fwres.iocbs_used; 270 exch_used += ha->queue_pair_map[i]->fwres.exch_used; 271 } 272 } 273 274 seq_printf(s, "Driver: estimate iocb used [%d] high water limit [%d]\n", 275 iocbs_used, ha->base_qpair->fwres.iocbs_limit); 276 277 seq_printf(s, "estimate exchange used[%d] high water limit [%d] n", 278 exch_used, ha->base_qpair->fwres.exch_limit); 279 } 280 281 return 0; 282 } 283 284 DEFINE_SHOW_ATTRIBUTE(qla_dfs_fw_resource_cnt); 285 286 static int 287 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused) 288 { 289 struct scsi_qla_host *vha = s->private; 290 struct qla_qpair *qpair = vha->hw->base_qpair; 291 uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio, 292 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd, 293 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent; 294 u16 i; 295 fc_port_t *fcport = NULL; 296 297 if (qla2x00_chip_is_down(vha)) 298 return 0; 299 300 qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd; 301 core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf; 302 qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio; 303 core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status; 304 qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio; 305 core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd; 306 num_q_full_sent = qpair->tgt_counters.num_q_full_sent; 307 num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed; 308 num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent; 309 310 for (i = 0; i < vha->hw->max_qpairs; i++) { 311 qpair = vha->hw->queue_pair_map[i]; 312 if (!qpair) 313 continue; 314 qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd; 315 core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf; 316 qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio; 317 core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status; 318 qla_core_ret_sta_ctio += 319 qpair->tgt_counters.qla_core_ret_sta_ctio; 320 core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd; 321 num_q_full_sent += qpair->tgt_counters.num_q_full_sent; 322 num_alloc_iocb_failed += 323 qpair->tgt_counters.num_alloc_iocb_failed; 324 num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent; 325 } 326 327 seq_puts(s, "Target Counters\n"); 328 seq_printf(s, "qla_core_sbt_cmd = %lld\n", 329 qla_core_sbt_cmd); 330 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n", 331 qla_core_ret_sta_ctio); 332 seq_printf(s, "qla_core_ret_ctio = %lld\n", 333 qla_core_ret_ctio); 334 seq_printf(s, "core_qla_que_buf = %lld\n", 335 core_qla_que_buf); 336 seq_printf(s, "core_qla_snd_status = %lld\n", 337 core_qla_snd_status); 338 seq_printf(s, "core_qla_free_cmd = %lld\n", 339 core_qla_free_cmd); 340 seq_printf(s, "num alloc iocb failed = %lld\n", 341 num_alloc_iocb_failed); 342 seq_printf(s, "num term exchange sent = %lld\n", 343 num_term_xchg_sent); 344 seq_printf(s, "num Q full sent = %lld\n", 345 num_q_full_sent); 346 347 /* DIF stats */ 348 seq_printf(s, "DIF Inp Bytes = %lld\n", 349 vha->qla_stats.qla_dif_stats.dif_input_bytes); 350 seq_printf(s, "DIF Outp Bytes = %lld\n", 351 vha->qla_stats.qla_dif_stats.dif_output_bytes); 352 seq_printf(s, "DIF Inp Req = %lld\n", 353 vha->qla_stats.qla_dif_stats.dif_input_requests); 354 seq_printf(s, "DIF Outp Req = %lld\n", 355 vha->qla_stats.qla_dif_stats.dif_output_requests); 356 seq_printf(s, "DIF Guard err = %d\n", 357 vha->qla_stats.qla_dif_stats.dif_guard_err); 358 seq_printf(s, "DIF Ref tag err = %d\n", 359 vha->qla_stats.qla_dif_stats.dif_ref_tag_err); 360 seq_printf(s, "DIF App tag err = %d\n", 361 vha->qla_stats.qla_dif_stats.dif_app_tag_err); 362 363 seq_puts(s, "\n"); 364 seq_puts(s, "Initiator Error Counters\n"); 365 seq_printf(s, "HW Error Count = %14lld\n", 366 vha->hw_err_cnt); 367 seq_printf(s, "Link Down Count = %14lld\n", 368 vha->short_link_down_cnt); 369 seq_printf(s, "Interface Err Count = %14lld\n", 370 vha->interface_err_cnt); 371 seq_printf(s, "Cmd Timeout Count = %14lld\n", 372 vha->cmd_timeout_cnt); 373 seq_printf(s, "Reset Count = %14lld\n", 374 vha->reset_cmd_err_cnt); 375 seq_puts(s, "\n"); 376 377 list_for_each_entry(fcport, &vha->vp_fcports, list) { 378 if (!fcport->rport) 379 continue; 380 381 seq_printf(s, "Target Num = %7d Link Down Count = %14lld\n", 382 fcport->rport->number, fcport->tgt_short_link_down_cnt); 383 } 384 seq_puts(s, "\n"); 385 386 return 0; 387 } 388 389 DEFINE_SHOW_ATTRIBUTE(qla_dfs_tgt_counters); 390 391 static int 392 qla2x00_dfs_fce_show(struct seq_file *s, void *unused) 393 { 394 scsi_qla_host_t *vha = s->private; 395 uint32_t cnt; 396 uint32_t *fce; 397 uint64_t fce_start; 398 struct qla_hw_data *ha = vha->hw; 399 400 mutex_lock(&ha->fce_mutex); 401 402 seq_puts(s, "FCE Trace Buffer\n"); 403 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr); 404 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma); 405 seq_puts(s, "FCE Enable Registers\n"); 406 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n", 407 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4], 408 ha->fce_mb[5], ha->fce_mb[6]); 409 410 fce = (uint32_t *) ha->fce; 411 fce_start = (unsigned long long) ha->fce_dma; 412 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) { 413 if (cnt % 8 == 0) 414 seq_printf(s, "\n%llx: ", 415 (unsigned long long)((cnt * 4) + fce_start)); 416 else 417 seq_putc(s, ' '); 418 seq_printf(s, "%08x", *fce++); 419 } 420 421 seq_puts(s, "\nEnd\n"); 422 423 mutex_unlock(&ha->fce_mutex); 424 425 return 0; 426 } 427 428 static int 429 qla2x00_dfs_fce_open(struct inode *inode, struct file *file) 430 { 431 scsi_qla_host_t *vha = inode->i_private; 432 struct qla_hw_data *ha = vha->hw; 433 int rval; 434 435 if (!ha->flags.fce_enabled) 436 goto out; 437 438 mutex_lock(&ha->fce_mutex); 439 440 /* Pause tracing to flush FCE buffers. */ 441 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd); 442 if (rval) 443 ql_dbg(ql_dbg_user, vha, 0x705c, 444 "DebugFS: Unable to disable FCE (%d).\n", rval); 445 446 ha->flags.fce_enabled = 0; 447 448 mutex_unlock(&ha->fce_mutex); 449 out: 450 return single_open(file, qla2x00_dfs_fce_show, vha); 451 } 452 453 static int 454 qla2x00_dfs_fce_release(struct inode *inode, struct file *file) 455 { 456 scsi_qla_host_t *vha = inode->i_private; 457 struct qla_hw_data *ha = vha->hw; 458 int rval; 459 460 if (ha->flags.fce_enabled) 461 goto out; 462 463 mutex_lock(&ha->fce_mutex); 464 465 /* Re-enable FCE tracing. */ 466 ha->flags.fce_enabled = 1; 467 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs)); 468 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs, 469 ha->fce_mb, &ha->fce_bufs); 470 if (rval) { 471 ql_dbg(ql_dbg_user, vha, 0x700d, 472 "DebugFS: Unable to reinitialize FCE (%d).\n", rval); 473 ha->flags.fce_enabled = 0; 474 } 475 476 mutex_unlock(&ha->fce_mutex); 477 out: 478 return single_release(inode, file); 479 } 480 481 static const struct file_operations dfs_fce_ops = { 482 .open = qla2x00_dfs_fce_open, 483 .read = seq_read, 484 .llseek = seq_lseek, 485 .release = qla2x00_dfs_fce_release, 486 }; 487 488 static int 489 qla_dfs_naqp_show(struct seq_file *s, void *unused) 490 { 491 struct scsi_qla_host *vha = s->private; 492 struct qla_hw_data *ha = vha->hw; 493 494 seq_printf(s, "%d\n", ha->tgt.num_act_qpairs); 495 return 0; 496 } 497 498 /* 499 * Helper macros for setting up debugfs entries. 500 * _name: The name of the debugfs entry 501 * _ctx_struct: The context that was passed when creating the debugfs file 502 * 503 * QLA_DFS_SETUP_RD could be used when there is only a show function. 504 * - show function take the name qla_dfs_<sysfs-name>_show 505 * 506 * QLA_DFS_SETUP_RW could be used when there are both show and write functions. 507 * - show function take the name qla_dfs_<sysfs-name>_show 508 * - write function take the name qla_dfs_<sysfs-name>_write 509 * 510 * To have a new debugfs entry, do: 511 * 1. Create a "struct dentry *" in the appropriate structure in the format 512 * dfs_<sysfs-name> 513 * 2. Setup debugfs entries using QLA_DFS_SETUP_RD / QLA_DFS_SETUP_RW 514 * 3. Create debugfs file in qla2x00_dfs_setup() using QLA_DFS_CREATE_FILE 515 * or QLA_DFS_ROOT_CREATE_FILE 516 * 4. Remove debugfs file in qla2x00_dfs_remove() using QLA_DFS_REMOVE_FILE 517 * or QLA_DFS_ROOT_REMOVE_FILE 518 * 519 * Example for creating "TEST" sysfs file: 520 * 1. struct qla_hw_data { ... struct dentry *dfs_TEST; } 521 * 2. QLA_DFS_SETUP_RD(TEST, scsi_qla_host_t); 522 * 3. In qla2x00_dfs_setup(): 523 * QLA_DFS_CREATE_FILE(ha, TEST, 0600, ha->dfs_dir, vha); 524 * 4. In qla2x00_dfs_remove(): 525 * QLA_DFS_REMOVE_FILE(ha, TEST); 526 */ 527 #define QLA_DFS_SETUP_RD(_name, _ctx_struct) \ 528 static int \ 529 qla_dfs_##_name##_open(struct inode *inode, struct file *file) \ 530 { \ 531 _ctx_struct *__ctx = inode->i_private; \ 532 \ 533 return single_open(file, qla_dfs_##_name##_show, __ctx); \ 534 } \ 535 \ 536 static const struct file_operations qla_dfs_##_name##_ops = { \ 537 .open = qla_dfs_##_name##_open, \ 538 .read = seq_read, \ 539 .llseek = seq_lseek, \ 540 .release = single_release, \ 541 }; 542 543 #define QLA_DFS_SETUP_RW(_name, _ctx_struct) \ 544 static int \ 545 qla_dfs_##_name##_open(struct inode *inode, struct file *file) \ 546 { \ 547 _ctx_struct *__ctx = inode->i_private; \ 548 \ 549 return single_open(file, qla_dfs_##_name##_show, __ctx); \ 550 } \ 551 \ 552 static const struct file_operations qla_dfs_##_name##_ops = { \ 553 .open = qla_dfs_##_name##_open, \ 554 .read = seq_read, \ 555 .llseek = seq_lseek, \ 556 .release = single_release, \ 557 .write = qla_dfs_##_name##_write, \ 558 }; 559 560 #define QLA_DFS_ROOT_CREATE_FILE(_name, _perm, _ctx) \ 561 do { \ 562 if (!qla_dfs_##_name) \ 563 qla_dfs_##_name = debugfs_create_file(#_name, \ 564 _perm, qla2x00_dfs_root, _ctx, \ 565 &qla_dfs_##_name##_ops); \ 566 } while (0) 567 568 #define QLA_DFS_ROOT_REMOVE_FILE(_name) \ 569 do { \ 570 if (qla_dfs_##_name) { \ 571 debugfs_remove(qla_dfs_##_name); \ 572 qla_dfs_##_name = NULL; \ 573 } \ 574 } while (0) 575 576 #define QLA_DFS_CREATE_FILE(_struct, _name, _perm, _parent, _ctx) \ 577 do { \ 578 (_struct)->dfs_##_name = debugfs_create_file(#_name, \ 579 _perm, _parent, _ctx, \ 580 &qla_dfs_##_name##_ops) \ 581 } while (0) 582 583 #define QLA_DFS_REMOVE_FILE(_struct, _name) \ 584 do { \ 585 if ((_struct)->dfs_##_name) { \ 586 debugfs_remove((_struct)->dfs_##_name); \ 587 (_struct)->dfs_##_name = NULL; \ 588 } \ 589 } while (0) 590 591 static int 592 qla_dfs_naqp_open(struct inode *inode, struct file *file) 593 { 594 struct scsi_qla_host *vha = inode->i_private; 595 596 return single_open(file, qla_dfs_naqp_show, vha); 597 } 598 599 static ssize_t 600 qla_dfs_naqp_write(struct file *file, const char __user *buffer, 601 size_t count, loff_t *pos) 602 { 603 struct seq_file *s = file->private_data; 604 struct scsi_qla_host *vha = s->private; 605 struct qla_hw_data *ha = vha->hw; 606 char *buf; 607 int rc = 0; 608 unsigned long num_act_qp; 609 610 if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) { 611 pr_err("host%ld: this adapter does not support Multi Q.", 612 vha->host_no); 613 return -EINVAL; 614 } 615 616 if (!vha->flags.qpairs_available) { 617 pr_err("host%ld: Driver is not setup with Multi Q.", 618 vha->host_no); 619 return -EINVAL; 620 } 621 buf = memdup_user_nul(buffer, count); 622 if (IS_ERR(buf)) { 623 pr_err("host%ld: fail to copy user buffer.", 624 vha->host_no); 625 return PTR_ERR(buf); 626 } 627 628 num_act_qp = simple_strtoul(buf, NULL, 0); 629 630 if (num_act_qp >= vha->hw->max_qpairs) { 631 pr_err("User set invalid number of qpairs %lu. Max = %d", 632 num_act_qp, vha->hw->max_qpairs); 633 rc = -EINVAL; 634 goto out_free; 635 } 636 637 if (num_act_qp != ha->tgt.num_act_qpairs) { 638 ha->tgt.num_act_qpairs = num_act_qp; 639 qlt_clr_qp_table(vha); 640 } 641 rc = count; 642 out_free: 643 kfree(buf); 644 return rc; 645 } 646 647 static const struct file_operations dfs_naqp_ops = { 648 .open = qla_dfs_naqp_open, 649 .read = seq_read, 650 .llseek = seq_lseek, 651 .release = single_release, 652 .write = qla_dfs_naqp_write, 653 }; 654 655 656 int 657 qla2x00_dfs_setup(scsi_qla_host_t *vha) 658 { 659 struct qla_hw_data *ha = vha->hw; 660 661 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) && 662 !IS_QLA27XX(ha) && !IS_QLA28XX(ha)) 663 goto out; 664 if (!ha->fce) 665 goto out; 666 667 if (qla2x00_dfs_root) 668 goto create_dir; 669 670 atomic_set(&qla2x00_dfs_root_count, 0); 671 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL); 672 673 create_dir: 674 if (ha->dfs_dir) 675 goto create_nodes; 676 677 mutex_init(&ha->fce_mutex); 678 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root); 679 680 atomic_inc(&qla2x00_dfs_root_count); 681 682 create_nodes: 683 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count", 684 S_IRUSR, ha->dfs_dir, vha, &qla_dfs_fw_resource_cnt_fops); 685 686 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, 687 ha->dfs_dir, vha, &qla_dfs_tgt_counters_fops); 688 689 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database", 690 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_port_database_fops); 691 692 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha, 693 &dfs_fce_ops); 694 695 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", 696 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_sess_fops); 697 698 if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) { 699 ha->tgt.dfs_naqp = debugfs_create_file("naqp", 700 0400, ha->dfs_dir, vha, &dfs_naqp_ops); 701 if (!ha->tgt.dfs_naqp) { 702 ql_log(ql_log_warn, vha, 0xd011, 703 "Unable to create debugFS naqp node.\n"); 704 goto out; 705 } 706 } 707 vha->dfs_rport_root = debugfs_create_dir("rports", ha->dfs_dir); 708 if (!vha->dfs_rport_root) { 709 ql_log(ql_log_warn, vha, 0xd012, 710 "Unable to create debugFS rports node.\n"); 711 goto out; 712 } 713 out: 714 return 0; 715 } 716 717 int 718 qla2x00_dfs_remove(scsi_qla_host_t *vha) 719 { 720 struct qla_hw_data *ha = vha->hw; 721 722 if (ha->tgt.dfs_naqp) { 723 debugfs_remove(ha->tgt.dfs_naqp); 724 ha->tgt.dfs_naqp = NULL; 725 } 726 727 if (ha->tgt.dfs_tgt_sess) { 728 debugfs_remove(ha->tgt.dfs_tgt_sess); 729 ha->tgt.dfs_tgt_sess = NULL; 730 } 731 732 if (ha->tgt.dfs_tgt_port_database) { 733 debugfs_remove(ha->tgt.dfs_tgt_port_database); 734 ha->tgt.dfs_tgt_port_database = NULL; 735 } 736 737 if (ha->dfs_fw_resource_cnt) { 738 debugfs_remove(ha->dfs_fw_resource_cnt); 739 ha->dfs_fw_resource_cnt = NULL; 740 } 741 742 if (ha->dfs_tgt_counters) { 743 debugfs_remove(ha->dfs_tgt_counters); 744 ha->dfs_tgt_counters = NULL; 745 } 746 747 if (ha->dfs_fce) { 748 debugfs_remove(ha->dfs_fce); 749 ha->dfs_fce = NULL; 750 } 751 752 if (vha->dfs_rport_root) { 753 debugfs_remove_recursive(vha->dfs_rport_root); 754 vha->dfs_rport_root = NULL; 755 } 756 757 if (ha->dfs_dir) { 758 debugfs_remove(ha->dfs_dir); 759 ha->dfs_dir = NULL; 760 atomic_dec(&qla2x00_dfs_root_count); 761 } 762 763 if (atomic_read(&qla2x00_dfs_root_count) == 0 && 764 qla2x00_dfs_root) { 765 debugfs_remove(qla2x00_dfs_root); 766 qla2x00_dfs_root = NULL; 767 } 768 769 return 0; 770 } 771