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 qla_dfs_rport_get(struct fc_port * fp,int attr_id,u64 * val)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 qla_dfs_rport_set(struct fc_port * fp,int attr_id,u64 val)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 qla2x00_dfs_create_rport(scsi_qla_host_t * vha,struct fc_port * fp)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 (IS_ERR(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 qla2x00_dfs_remove_rport(scsi_qla_host_t * vha,struct fc_port * fp)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 qla2x00_dfs_tgt_sess_show(struct seq_file * s,void * unused)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 qla2x00_dfs_tgt_port_database_show(struct seq_file * s,void * unused)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 qla_dfs_fw_resource_cnt_show(struct seq_file * s,void * unused)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 if (ql2xenforce_iocb_limit == 2) { 281 iocbs_used = atomic_read(&ha->fwres.iocb_used); 282 exch_used = atomic_read(&ha->fwres.exch_used); 283 seq_printf(s, " estimate iocb2 used [%d] high water limit [%d]\n", 284 iocbs_used, ha->fwres.iocb_limit); 285 286 seq_printf(s, " estimate exchange2 used[%d] high water limit [%d] \n", 287 exch_used, ha->fwres.exch_limit); 288 } 289 } 290 291 return 0; 292 } 293 294 DEFINE_SHOW_ATTRIBUTE(qla_dfs_fw_resource_cnt); 295 296 static int qla_dfs_tgt_counters_show(struct seq_file * s,void * unused)297 qla_dfs_tgt_counters_show(struct seq_file *s, void *unused) 298 { 299 struct scsi_qla_host *vha = s->private; 300 struct qla_qpair *qpair = vha->hw->base_qpair; 301 uint64_t qla_core_sbt_cmd, core_qla_que_buf, qla_core_ret_ctio, 302 core_qla_snd_status, qla_core_ret_sta_ctio, core_qla_free_cmd, 303 num_q_full_sent, num_alloc_iocb_failed, num_term_xchg_sent; 304 u16 i; 305 fc_port_t *fcport = NULL; 306 307 if (qla2x00_chip_is_down(vha)) 308 return 0; 309 310 qla_core_sbt_cmd = qpair->tgt_counters.qla_core_sbt_cmd; 311 core_qla_que_buf = qpair->tgt_counters.core_qla_que_buf; 312 qla_core_ret_ctio = qpair->tgt_counters.qla_core_ret_ctio; 313 core_qla_snd_status = qpair->tgt_counters.core_qla_snd_status; 314 qla_core_ret_sta_ctio = qpair->tgt_counters.qla_core_ret_sta_ctio; 315 core_qla_free_cmd = qpair->tgt_counters.core_qla_free_cmd; 316 num_q_full_sent = qpair->tgt_counters.num_q_full_sent; 317 num_alloc_iocb_failed = qpair->tgt_counters.num_alloc_iocb_failed; 318 num_term_xchg_sent = qpair->tgt_counters.num_term_xchg_sent; 319 320 for (i = 0; i < vha->hw->max_qpairs; i++) { 321 qpair = vha->hw->queue_pair_map[i]; 322 if (!qpair) 323 continue; 324 qla_core_sbt_cmd += qpair->tgt_counters.qla_core_sbt_cmd; 325 core_qla_que_buf += qpair->tgt_counters.core_qla_que_buf; 326 qla_core_ret_ctio += qpair->tgt_counters.qla_core_ret_ctio; 327 core_qla_snd_status += qpair->tgt_counters.core_qla_snd_status; 328 qla_core_ret_sta_ctio += 329 qpair->tgt_counters.qla_core_ret_sta_ctio; 330 core_qla_free_cmd += qpair->tgt_counters.core_qla_free_cmd; 331 num_q_full_sent += qpair->tgt_counters.num_q_full_sent; 332 num_alloc_iocb_failed += 333 qpair->tgt_counters.num_alloc_iocb_failed; 334 num_term_xchg_sent += qpair->tgt_counters.num_term_xchg_sent; 335 } 336 337 seq_puts(s, "Target Counters\n"); 338 seq_printf(s, "qla_core_sbt_cmd = %lld\n", 339 qla_core_sbt_cmd); 340 seq_printf(s, "qla_core_ret_sta_ctio = %lld\n", 341 qla_core_ret_sta_ctio); 342 seq_printf(s, "qla_core_ret_ctio = %lld\n", 343 qla_core_ret_ctio); 344 seq_printf(s, "core_qla_que_buf = %lld\n", 345 core_qla_que_buf); 346 seq_printf(s, "core_qla_snd_status = %lld\n", 347 core_qla_snd_status); 348 seq_printf(s, "core_qla_free_cmd = %lld\n", 349 core_qla_free_cmd); 350 seq_printf(s, "num alloc iocb failed = %lld\n", 351 num_alloc_iocb_failed); 352 seq_printf(s, "num term exchange sent = %lld\n", 353 num_term_xchg_sent); 354 seq_printf(s, "num Q full sent = %lld\n", 355 num_q_full_sent); 356 357 /* DIF stats */ 358 seq_printf(s, "DIF Inp Bytes = %lld\n", 359 vha->qla_stats.qla_dif_stats.dif_input_bytes); 360 seq_printf(s, "DIF Outp Bytes = %lld\n", 361 vha->qla_stats.qla_dif_stats.dif_output_bytes); 362 seq_printf(s, "DIF Inp Req = %lld\n", 363 vha->qla_stats.qla_dif_stats.dif_input_requests); 364 seq_printf(s, "DIF Outp Req = %lld\n", 365 vha->qla_stats.qla_dif_stats.dif_output_requests); 366 seq_printf(s, "DIF Guard err = %d\n", 367 vha->qla_stats.qla_dif_stats.dif_guard_err); 368 seq_printf(s, "DIF Ref tag err = %d\n", 369 vha->qla_stats.qla_dif_stats.dif_ref_tag_err); 370 seq_printf(s, "DIF App tag err = %d\n", 371 vha->qla_stats.qla_dif_stats.dif_app_tag_err); 372 373 seq_puts(s, "\n"); 374 seq_puts(s, "Initiator Error Counters\n"); 375 seq_printf(s, "HW Error Count = %14lld\n", 376 vha->hw_err_cnt); 377 seq_printf(s, "Link Down Count = %14lld\n", 378 vha->short_link_down_cnt); 379 seq_printf(s, "Interface Err Count = %14lld\n", 380 vha->interface_err_cnt); 381 seq_printf(s, "Cmd Timeout Count = %14lld\n", 382 vha->cmd_timeout_cnt); 383 seq_printf(s, "Reset Count = %14lld\n", 384 vha->reset_cmd_err_cnt); 385 seq_puts(s, "\n"); 386 387 list_for_each_entry(fcport, &vha->vp_fcports, list) { 388 if (!fcport->rport) 389 continue; 390 391 seq_printf(s, "Target Num = %7d Link Down Count = %14lld\n", 392 fcport->rport->number, fcport->tgt_short_link_down_cnt); 393 } 394 seq_puts(s, "\n"); 395 396 return 0; 397 } 398 399 DEFINE_SHOW_ATTRIBUTE(qla_dfs_tgt_counters); 400 401 static int qla2x00_dfs_fce_show(struct seq_file * s,void * unused)402 qla2x00_dfs_fce_show(struct seq_file *s, void *unused) 403 { 404 scsi_qla_host_t *vha = s->private; 405 uint32_t cnt; 406 uint32_t *fce; 407 uint64_t fce_start; 408 struct qla_hw_data *ha = vha->hw; 409 410 mutex_lock(&ha->fce_mutex); 411 412 seq_puts(s, "FCE Trace Buffer\n"); 413 seq_printf(s, "In Pointer = %llx\n\n", (unsigned long long)ha->fce_wr); 414 seq_printf(s, "Base = %llx\n\n", (unsigned long long) ha->fce_dma); 415 seq_puts(s, "FCE Enable Registers\n"); 416 seq_printf(s, "%08x %08x %08x %08x %08x %08x\n", 417 ha->fce_mb[0], ha->fce_mb[2], ha->fce_mb[3], ha->fce_mb[4], 418 ha->fce_mb[5], ha->fce_mb[6]); 419 420 fce = (uint32_t *) ha->fce; 421 fce_start = (unsigned long long) ha->fce_dma; 422 for (cnt = 0; cnt < fce_calc_size(ha->fce_bufs) / 4; cnt++) { 423 if (cnt % 8 == 0) 424 seq_printf(s, "\n%llx: ", 425 (unsigned long long)((cnt * 4) + fce_start)); 426 else 427 seq_putc(s, ' '); 428 seq_printf(s, "%08x", *fce++); 429 } 430 431 seq_puts(s, "\nEnd\n"); 432 433 mutex_unlock(&ha->fce_mutex); 434 435 return 0; 436 } 437 438 static int qla2x00_dfs_fce_open(struct inode * inode,struct file * file)439 qla2x00_dfs_fce_open(struct inode *inode, struct file *file) 440 { 441 scsi_qla_host_t *vha = inode->i_private; 442 struct qla_hw_data *ha = vha->hw; 443 int rval; 444 445 if (!ha->flags.fce_enabled) 446 goto out; 447 448 mutex_lock(&ha->fce_mutex); 449 450 /* Pause tracing to flush FCE buffers. */ 451 rval = qla2x00_disable_fce_trace(vha, &ha->fce_wr, &ha->fce_rd); 452 if (rval) 453 ql_dbg(ql_dbg_user, vha, 0x705c, 454 "DebugFS: Unable to disable FCE (%d).\n", rval); 455 456 ha->flags.fce_enabled = 0; 457 458 mutex_unlock(&ha->fce_mutex); 459 out: 460 return single_open(file, qla2x00_dfs_fce_show, vha); 461 } 462 463 static int qla2x00_dfs_fce_release(struct inode * inode,struct file * file)464 qla2x00_dfs_fce_release(struct inode *inode, struct file *file) 465 { 466 scsi_qla_host_t *vha = inode->i_private; 467 struct qla_hw_data *ha = vha->hw; 468 int rval; 469 470 if (ha->flags.fce_enabled) 471 goto out; 472 473 mutex_lock(&ha->fce_mutex); 474 475 /* Re-enable FCE tracing. */ 476 ha->flags.fce_enabled = 1; 477 memset(ha->fce, 0, fce_calc_size(ha->fce_bufs)); 478 rval = qla2x00_enable_fce_trace(vha, ha->fce_dma, ha->fce_bufs, 479 ha->fce_mb, &ha->fce_bufs); 480 if (rval) { 481 ql_dbg(ql_dbg_user, vha, 0x700d, 482 "DebugFS: Unable to reinitialize FCE (%d).\n", rval); 483 ha->flags.fce_enabled = 0; 484 } 485 486 mutex_unlock(&ha->fce_mutex); 487 out: 488 return single_release(inode, file); 489 } 490 491 static const struct file_operations dfs_fce_ops = { 492 .open = qla2x00_dfs_fce_open, 493 .read = seq_read, 494 .llseek = seq_lseek, 495 .release = qla2x00_dfs_fce_release, 496 }; 497 498 static int qla_dfs_naqp_show(struct seq_file * s,void * unused)499 qla_dfs_naqp_show(struct seq_file *s, void *unused) 500 { 501 struct scsi_qla_host *vha = s->private; 502 struct qla_hw_data *ha = vha->hw; 503 504 seq_printf(s, "%d\n", ha->tgt.num_act_qpairs); 505 return 0; 506 } 507 508 /* 509 * Helper macros for setting up debugfs entries. 510 * _name: The name of the debugfs entry 511 * _ctx_struct: The context that was passed when creating the debugfs file 512 * 513 * QLA_DFS_SETUP_RD could be used when there is only a show function. 514 * - show function take the name qla_dfs_<sysfs-name>_show 515 * 516 * QLA_DFS_SETUP_RW could be used when there are both show and write functions. 517 * - show function take the name qla_dfs_<sysfs-name>_show 518 * - write function take the name qla_dfs_<sysfs-name>_write 519 * 520 * To have a new debugfs entry, do: 521 * 1. Create a "struct dentry *" in the appropriate structure in the format 522 * dfs_<sysfs-name> 523 * 2. Setup debugfs entries using QLA_DFS_SETUP_RD / QLA_DFS_SETUP_RW 524 * 3. Create debugfs file in qla2x00_dfs_setup() using QLA_DFS_CREATE_FILE 525 * or QLA_DFS_ROOT_CREATE_FILE 526 * 4. Remove debugfs file in qla2x00_dfs_remove() using QLA_DFS_REMOVE_FILE 527 * or QLA_DFS_ROOT_REMOVE_FILE 528 * 529 * Example for creating "TEST" sysfs file: 530 * 1. struct qla_hw_data { ... struct dentry *dfs_TEST; } 531 * 2. QLA_DFS_SETUP_RD(TEST); 532 * 3. In qla2x00_dfs_setup(): 533 * QLA_DFS_CREATE_FILE(ha, TEST, 0600, ha->dfs_dir, vha); 534 * 4. In qla2x00_dfs_remove(): 535 * QLA_DFS_REMOVE_FILE(ha, TEST); 536 */ 537 #define QLA_DFS_SETUP_RD(_name) DEFINE_SHOW_ATTRIBUTE(qla_dfs_##_name) 538 539 #define QLA_DFS_SETUP_RW(_name) DEFINE_SHOW_STORE_ATTRIBUTE(qla_dfs_##_name) 540 541 #define QLA_DFS_ROOT_CREATE_FILE(_name, _perm, _ctx) \ 542 do { \ 543 if (!qla_dfs_##_name) \ 544 qla_dfs_##_name = debugfs_create_file(#_name, \ 545 _perm, qla2x00_dfs_root, _ctx, \ 546 &qla_dfs_##_name##_fops); \ 547 } while (0) 548 549 #define QLA_DFS_ROOT_REMOVE_FILE(_name) \ 550 do { \ 551 if (qla_dfs_##_name) { \ 552 debugfs_remove(qla_dfs_##_name); \ 553 qla_dfs_##_name = NULL; \ 554 } \ 555 } while (0) 556 557 #define QLA_DFS_CREATE_FILE(_struct, _name, _perm, _parent, _ctx) \ 558 do { \ 559 (_struct)->dfs_##_name = debugfs_create_file(#_name, \ 560 _perm, _parent, _ctx, \ 561 &qla_dfs_##_name##_fops) \ 562 } while (0) 563 564 #define QLA_DFS_REMOVE_FILE(_struct, _name) \ 565 do { \ 566 if ((_struct)->dfs_##_name) { \ 567 debugfs_remove((_struct)->dfs_##_name); \ 568 (_struct)->dfs_##_name = NULL; \ 569 } \ 570 } while (0) 571 572 static ssize_t qla_dfs_naqp_write(struct file * file,const char __user * buffer,size_t count,loff_t * pos)573 qla_dfs_naqp_write(struct file *file, const char __user *buffer, 574 size_t count, loff_t *pos) 575 { 576 struct seq_file *s = file->private_data; 577 struct scsi_qla_host *vha = s->private; 578 struct qla_hw_data *ha = vha->hw; 579 char *buf; 580 int rc = 0; 581 unsigned long num_act_qp; 582 583 if (!(IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha))) { 584 pr_err("host%ld: this adapter does not support Multi Q.", 585 vha->host_no); 586 return -EINVAL; 587 } 588 589 if (!vha->flags.qpairs_available) { 590 pr_err("host%ld: Driver is not setup with Multi Q.", 591 vha->host_no); 592 return -EINVAL; 593 } 594 buf = memdup_user_nul(buffer, count); 595 if (IS_ERR(buf)) { 596 pr_err("host%ld: fail to copy user buffer.", 597 vha->host_no); 598 return PTR_ERR(buf); 599 } 600 601 num_act_qp = simple_strtoul(buf, NULL, 0); 602 603 if (num_act_qp >= vha->hw->max_qpairs) { 604 pr_err("User set invalid number of qpairs %lu. Max = %d", 605 num_act_qp, vha->hw->max_qpairs); 606 rc = -EINVAL; 607 goto out_free; 608 } 609 610 if (num_act_qp != ha->tgt.num_act_qpairs) { 611 ha->tgt.num_act_qpairs = num_act_qp; 612 qlt_clr_qp_table(vha); 613 } 614 rc = count; 615 out_free: 616 kfree(buf); 617 return rc; 618 } 619 QLA_DFS_SETUP_RW(naqp); 620 621 int qla2x00_dfs_setup(scsi_qla_host_t * vha)622 qla2x00_dfs_setup(scsi_qla_host_t *vha) 623 { 624 struct qla_hw_data *ha = vha->hw; 625 626 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) && 627 !IS_QLA27XX(ha) && !IS_QLA28XX(ha)) 628 goto out; 629 if (!ha->fce) 630 goto out; 631 632 if (qla2x00_dfs_root) 633 goto create_dir; 634 635 atomic_set(&qla2x00_dfs_root_count, 0); 636 qla2x00_dfs_root = debugfs_create_dir(QLA2XXX_DRIVER_NAME, NULL); 637 638 create_dir: 639 if (ha->dfs_dir) 640 goto create_nodes; 641 642 mutex_init(&ha->fce_mutex); 643 ha->dfs_dir = debugfs_create_dir(vha->host_str, qla2x00_dfs_root); 644 645 atomic_inc(&qla2x00_dfs_root_count); 646 647 create_nodes: 648 ha->dfs_fw_resource_cnt = debugfs_create_file("fw_resource_count", 649 S_IRUSR, ha->dfs_dir, vha, &qla_dfs_fw_resource_cnt_fops); 650 651 ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR, 652 ha->dfs_dir, vha, &qla_dfs_tgt_counters_fops); 653 654 ha->tgt.dfs_tgt_port_database = debugfs_create_file("tgt_port_database", 655 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_port_database_fops); 656 657 ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha, 658 &dfs_fce_ops); 659 660 ha->tgt.dfs_tgt_sess = debugfs_create_file("tgt_sess", 661 S_IRUSR, ha->dfs_dir, vha, &qla2x00_dfs_tgt_sess_fops); 662 663 if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) { 664 ha->tgt.dfs_naqp = debugfs_create_file("naqp", 665 0400, ha->dfs_dir, vha, &qla_dfs_naqp_fops); 666 if (IS_ERR(ha->tgt.dfs_naqp)) { 667 ql_log(ql_log_warn, vha, 0xd011, 668 "Unable to create debugFS naqp node.\n"); 669 goto out; 670 } 671 } 672 vha->dfs_rport_root = debugfs_create_dir("rports", ha->dfs_dir); 673 if (IS_ERR(vha->dfs_rport_root)) { 674 ql_log(ql_log_warn, vha, 0xd012, 675 "Unable to create debugFS rports node.\n"); 676 goto out; 677 } 678 out: 679 return 0; 680 } 681 682 int qla2x00_dfs_remove(scsi_qla_host_t * vha)683 qla2x00_dfs_remove(scsi_qla_host_t *vha) 684 { 685 struct qla_hw_data *ha = vha->hw; 686 687 if (ha->tgt.dfs_naqp) { 688 debugfs_remove(ha->tgt.dfs_naqp); 689 ha->tgt.dfs_naqp = NULL; 690 } 691 692 if (ha->tgt.dfs_tgt_sess) { 693 debugfs_remove(ha->tgt.dfs_tgt_sess); 694 ha->tgt.dfs_tgt_sess = NULL; 695 } 696 697 if (ha->tgt.dfs_tgt_port_database) { 698 debugfs_remove(ha->tgt.dfs_tgt_port_database); 699 ha->tgt.dfs_tgt_port_database = NULL; 700 } 701 702 if (ha->dfs_fw_resource_cnt) { 703 debugfs_remove(ha->dfs_fw_resource_cnt); 704 ha->dfs_fw_resource_cnt = NULL; 705 } 706 707 if (ha->dfs_tgt_counters) { 708 debugfs_remove(ha->dfs_tgt_counters); 709 ha->dfs_tgt_counters = NULL; 710 } 711 712 if (ha->dfs_fce) { 713 debugfs_remove(ha->dfs_fce); 714 ha->dfs_fce = NULL; 715 } 716 717 if (vha->dfs_rport_root) { 718 debugfs_remove_recursive(vha->dfs_rport_root); 719 vha->dfs_rport_root = NULL; 720 } 721 722 if (ha->dfs_dir) { 723 debugfs_remove(ha->dfs_dir); 724 ha->dfs_dir = NULL; 725 atomic_dec(&qla2x00_dfs_root_count); 726 } 727 728 if (atomic_read(&qla2x00_dfs_root_count) == 0 && 729 qla2x00_dfs_root) { 730 debugfs_remove(qla2x00_dfs_root); 731 qla2x00_dfs_root = NULL; 732 } 733 734 return 0; 735 } 736