1 /*******************************************************************************
2 * Filename: target_core_device.c (based on iscsi_target_device.c)
4 * This file contains the TCM Virtual Device and Disk Transport
5 * agnostic related functions.
7 * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc.
8 * Copyright (c) 2005-2006 SBE, Inc. All Rights Reserved.
9 * Copyright (c) 2007-2010 Rising Tide Systems
10 * Copyright (c) 2008-2010 Linux-iSCSI.org
12 * Nicholas A. Bellinger <nab@kernel.org>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
28 ******************************************************************************/
30 #include <linux/net.h>
31 #include <linux/string.h>
32 #include <linux/delay.h>
33 #include <linux/timer.h>
34 #include <linux/slab.h>
35 #include <linux/spinlock.h>
36 #include <linux/kthread.h>
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_device.h>
43 #include <target/target_core_base.h>
44 #include <target/target_core_device.h>
45 #include <target/target_core_tpg.h>
46 #include <target/target_core_transport.h>
47 #include <target/target_core_fabric_ops.h>
49 #include "target_core_alua.h"
50 #include "target_core_hba.h"
51 #include "target_core_pr.h"
52 #include "target_core_ua.h"
54 static void se_dev_start(struct se_device *dev);
55 static void se_dev_stop(struct se_device *dev);
57 static struct se_hba *lun0_hba;
58 static struct se_subsystem_dev *lun0_su_dev;
59 /* not static, needed by tpg.c */
60 struct se_device *g_lun0_dev;
62 int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
64 struct se_lun *se_lun = NULL;
65 struct se_session *se_sess = se_cmd->se_sess;
66 struct se_device *dev;
69 if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) {
70 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
71 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
75 spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags);
76 se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun];
77 if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
78 struct se_dev_entry *deve = se_cmd->se_deve;
81 deve->total_bytes += se_cmd->data_length;
83 if ((se_cmd->data_direction == DMA_TO_DEVICE) &&
84 (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) {
85 se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED;
86 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
87 printk("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
88 " Access for 0x%08x\n",
89 se_cmd->se_tfo->get_fabric_name(),
91 spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
95 if (se_cmd->data_direction == DMA_TO_DEVICE)
96 deve->write_bytes += se_cmd->data_length;
97 else if (se_cmd->data_direction == DMA_FROM_DEVICE)
98 deve->read_bytes += se_cmd->data_length;
102 se_lun = deve->se_lun;
103 se_cmd->se_lun = deve->se_lun;
104 se_cmd->pr_res_key = deve->pr_res_key;
105 se_cmd->orig_fe_lun = unpacked_lun;
106 se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev;
107 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
109 spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
113 * Use the se_portal_group->tpg_virt_lun0 to allow for
114 * REPORT_LUNS, et al to be returned when no active
115 * MappedLUN=0 exists for this Initiator Port.
117 if (unpacked_lun != 0) {
118 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
119 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
120 printk("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
121 " Access for 0x%08x\n",
122 se_cmd->se_tfo->get_fabric_name(),
127 * Force WRITE PROTECT for virtual LUN 0
129 if ((se_cmd->data_direction != DMA_FROM_DEVICE) &&
130 (se_cmd->data_direction != DMA_NONE)) {
131 se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED;
132 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
136 se_lun = &se_sess->se_tpg->tpg_virt_lun0;
137 se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0;
138 se_cmd->orig_fe_lun = 0;
139 se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev;
140 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
143 * Determine if the struct se_lun is online.
144 * FIXME: Check for LUN_RESET + UNIT Attention
146 if (se_dev_check_online(se_lun->lun_se_dev) != 0) {
147 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
148 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
152 /* Directly associate cmd with se_dev */
153 se_cmd->se_dev = se_lun->lun_se_dev;
155 /* TODO: get rid of this and use atomics for stats */
156 dev = se_lun->lun_se_dev;
157 spin_lock_irqsave(&dev->stats_lock, flags);
159 if (se_cmd->data_direction == DMA_TO_DEVICE)
160 dev->write_bytes += se_cmd->data_length;
161 else if (se_cmd->data_direction == DMA_FROM_DEVICE)
162 dev->read_bytes += se_cmd->data_length;
163 spin_unlock_irqrestore(&dev->stats_lock, flags);
166 * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used
167 * for tracking state of struct se_cmds during LUN shutdown events.
169 spin_lock_irqsave(&se_lun->lun_cmd_lock, flags);
170 list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list);
171 atomic_set(&se_cmd->transport_lun_active, 1);
172 spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags);
176 EXPORT_SYMBOL(transport_lookup_cmd_lun);
178 int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
180 struct se_dev_entry *deve;
181 struct se_lun *se_lun = NULL;
182 struct se_session *se_sess = se_cmd->se_sess;
183 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
186 if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) {
187 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
188 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
192 spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags);
193 se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun];
194 deve = se_cmd->se_deve;
196 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
197 se_tmr->tmr_lun = deve->se_lun;
198 se_cmd->se_lun = deve->se_lun;
199 se_lun = deve->se_lun;
200 se_cmd->pr_res_key = deve->pr_res_key;
201 se_cmd->orig_fe_lun = unpacked_lun;
202 se_cmd->se_orig_obj_ptr = se_cmd->se_dev;
204 spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
207 printk(KERN_INFO "TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
208 " Access for 0x%08x\n",
209 se_cmd->se_tfo->get_fabric_name(),
211 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
215 * Determine if the struct se_lun is online.
216 * FIXME: Check for LUN_RESET + UNIT Attention
218 if (se_dev_check_online(se_lun->lun_se_dev) != 0) {
219 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
223 /* Directly associate cmd with se_dev */
224 se_cmd->se_dev = se_lun->lun_se_dev;
225 se_tmr->tmr_dev = se_lun->lun_se_dev;
227 spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags);
228 list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list);
229 spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags);
233 EXPORT_SYMBOL(transport_lookup_tmr_lun);
236 * This function is called from core_scsi3_emulate_pro_register_and_move()
237 * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count
238 * when a matching rtpi is found.
240 struct se_dev_entry *core_get_se_deve_from_rtpi(
241 struct se_node_acl *nacl,
244 struct se_dev_entry *deve;
246 struct se_port *port;
247 struct se_portal_group *tpg = nacl->se_tpg;
250 spin_lock_irq(&nacl->device_list_lock);
251 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
252 deve = &nacl->device_list[i];
254 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
259 printk(KERN_ERR "%s device entries device pointer is"
260 " NULL, but Initiator has access.\n",
261 tpg->se_tpg_tfo->get_fabric_name());
266 printk(KERN_ERR "%s device entries device pointer is"
267 " NULL, but Initiator has access.\n",
268 tpg->se_tpg_tfo->get_fabric_name());
271 if (port->sep_rtpi != rtpi)
274 atomic_inc(&deve->pr_ref_count);
275 smp_mb__after_atomic_inc();
276 spin_unlock_irq(&nacl->device_list_lock);
280 spin_unlock_irq(&nacl->device_list_lock);
285 int core_free_device_list_for_node(
286 struct se_node_acl *nacl,
287 struct se_portal_group *tpg)
289 struct se_dev_entry *deve;
293 if (!nacl->device_list)
296 spin_lock_irq(&nacl->device_list_lock);
297 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
298 deve = &nacl->device_list[i];
300 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
304 printk(KERN_ERR "%s device entries device pointer is"
305 " NULL, but Initiator has access.\n",
306 tpg->se_tpg_tfo->get_fabric_name());
311 spin_unlock_irq(&nacl->device_list_lock);
312 core_update_device_list_for_node(lun, NULL, deve->mapped_lun,
313 TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0);
314 spin_lock_irq(&nacl->device_list_lock);
316 spin_unlock_irq(&nacl->device_list_lock);
318 kfree(nacl->device_list);
319 nacl->device_list = NULL;
324 void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd)
326 struct se_dev_entry *deve;
328 spin_lock_irq(&se_nacl->device_list_lock);
329 deve = &se_nacl->device_list[se_cmd->orig_fe_lun];
331 spin_unlock_irq(&se_nacl->device_list_lock);
334 void core_update_device_list_access(
337 struct se_node_acl *nacl)
339 struct se_dev_entry *deve;
341 spin_lock_irq(&nacl->device_list_lock);
342 deve = &nacl->device_list[mapped_lun];
343 if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) {
344 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY;
345 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE;
347 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE;
348 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY;
350 spin_unlock_irq(&nacl->device_list_lock);
353 /* core_update_device_list_for_node():
357 int core_update_device_list_for_node(
359 struct se_lun_acl *lun_acl,
362 struct se_node_acl *nacl,
363 struct se_portal_group *tpg,
366 struct se_port *port = lun->lun_sep;
367 struct se_dev_entry *deve = &nacl->device_list[mapped_lun];
370 * If the MappedLUN entry is being disabled, the entry in
371 * port->sep_alua_list must be removed now before clearing the
372 * struct se_dev_entry pointers below as logic in
373 * core_alua_do_transition_tg_pt() depends on these being present.
377 * deve->se_lun_acl will be NULL for demo-mode created LUNs
378 * that have not been explicitly concerted to MappedLUNs ->
379 * struct se_lun_acl, but we remove deve->alua_port_list from
380 * port->sep_alua_list. This also means that active UAs and
381 * NodeACL context specific PR metadata for demo-mode
382 * MappedLUN *deve will be released below..
384 spin_lock_bh(&port->sep_alua_lock);
385 list_del(&deve->alua_port_list);
386 spin_unlock_bh(&port->sep_alua_lock);
389 spin_lock_irq(&nacl->device_list_lock);
392 * Check if the call is handling demo mode -> explict LUN ACL
393 * transition. This transition must be for the same struct se_lun
394 * + mapped_lun that was setup in demo mode..
396 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
397 if (deve->se_lun_acl != NULL) {
398 printk(KERN_ERR "struct se_dev_entry->se_lun_acl"
399 " already set for demo mode -> explict"
400 " LUN ACL transition\n");
401 spin_unlock_irq(&nacl->device_list_lock);
404 if (deve->se_lun != lun) {
405 printk(KERN_ERR "struct se_dev_entry->se_lun does"
406 " match passed struct se_lun for demo mode"
407 " -> explict LUN ACL transition\n");
408 spin_unlock_irq(&nacl->device_list_lock);
411 deve->se_lun_acl = lun_acl;
415 deve->se_lun_acl = lun_acl;
416 deve->mapped_lun = mapped_lun;
417 deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS;
420 if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) {
421 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY;
422 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE;
424 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE;
425 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY;
429 spin_unlock_irq(&nacl->device_list_lock);
432 deve->creation_time = get_jiffies_64();
433 deve->attach_count++;
434 spin_unlock_irq(&nacl->device_list_lock);
436 spin_lock_bh(&port->sep_alua_lock);
437 list_add_tail(&deve->alua_port_list, &port->sep_alua_list);
438 spin_unlock_bh(&port->sep_alua_lock);
443 * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE
444 * PR operation to complete.
446 spin_unlock_irq(&nacl->device_list_lock);
447 while (atomic_read(&deve->pr_ref_count) != 0)
449 spin_lock_irq(&nacl->device_list_lock);
451 * Disable struct se_dev_entry LUN ACL mapping
453 core_scsi3_ua_release_all(deve);
455 deve->se_lun_acl = NULL;
457 deve->creation_time = 0;
458 deve->attach_count--;
459 spin_unlock_irq(&nacl->device_list_lock);
461 core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl);
465 /* core_clear_lun_from_tpg():
469 void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg)
471 struct se_node_acl *nacl;
472 struct se_dev_entry *deve;
475 spin_lock_bh(&tpg->acl_node_lock);
476 list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) {
477 spin_unlock_bh(&tpg->acl_node_lock);
479 spin_lock_irq(&nacl->device_list_lock);
480 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
481 deve = &nacl->device_list[i];
482 if (lun != deve->se_lun)
484 spin_unlock_irq(&nacl->device_list_lock);
486 core_update_device_list_for_node(lun, NULL,
487 deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS,
490 spin_lock_irq(&nacl->device_list_lock);
492 spin_unlock_irq(&nacl->device_list_lock);
494 spin_lock_bh(&tpg->acl_node_lock);
496 spin_unlock_bh(&tpg->acl_node_lock);
499 static struct se_port *core_alloc_port(struct se_device *dev)
501 struct se_port *port, *port_tmp;
503 port = kzalloc(sizeof(struct se_port), GFP_KERNEL);
505 printk(KERN_ERR "Unable to allocate struct se_port\n");
506 return ERR_PTR(-ENOMEM);
508 INIT_LIST_HEAD(&port->sep_alua_list);
509 INIT_LIST_HEAD(&port->sep_list);
510 atomic_set(&port->sep_tg_pt_secondary_offline, 0);
511 spin_lock_init(&port->sep_alua_lock);
512 mutex_init(&port->sep_tg_pt_md_mutex);
514 spin_lock(&dev->se_port_lock);
515 if (dev->dev_port_count == 0x0000ffff) {
516 printk(KERN_WARNING "Reached dev->dev_port_count =="
518 spin_unlock(&dev->se_port_lock);
519 return ERR_PTR(-ENOSPC);
523 * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device
524 * Here is the table from spc4r17 section 7.7.3.8.
526 * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field
530 * 1h Relative port 1, historically known as port A
531 * 2h Relative port 2, historically known as port B
532 * 3h to FFFFh Relative port 3 through 65 535
534 port->sep_rtpi = dev->dev_rpti_counter++;
535 if (!(port->sep_rtpi))
538 list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) {
540 * Make sure RELATIVE TARGET PORT IDENTIFER is unique
543 if (port->sep_rtpi == port_tmp->sep_rtpi)
546 spin_unlock(&dev->se_port_lock);
551 static void core_export_port(
552 struct se_device *dev,
553 struct se_portal_group *tpg,
554 struct se_port *port,
557 struct se_subsystem_dev *su_dev = dev->se_sub_dev;
558 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL;
560 spin_lock(&dev->se_port_lock);
561 spin_lock(&lun->lun_sep_lock);
565 spin_unlock(&lun->lun_sep_lock);
567 list_add_tail(&port->sep_list, &dev->dev_sep_list);
568 spin_unlock(&dev->se_port_lock);
570 if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) {
571 tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port);
572 if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) {
573 printk(KERN_ERR "Unable to allocate t10_alua_tg_pt"
577 spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
578 __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
579 su_dev->t10_alua.default_tg_pt_gp);
580 spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
581 printk(KERN_INFO "%s/%s: Adding to default ALUA Target Port"
582 " Group: alua/default_tg_pt_gp\n",
583 dev->transport->name, tpg->se_tpg_tfo->get_fabric_name());
586 dev->dev_port_count++;
587 port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */
591 * Called with struct se_device->se_port_lock spinlock held.
593 static void core_release_port(struct se_device *dev, struct se_port *port)
594 __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock)
597 * Wait for any port reference for PR ALL_TG_PT=1 operation
598 * to complete in __core_scsi3_alloc_registration()
600 spin_unlock(&dev->se_port_lock);
601 if (atomic_read(&port->sep_tg_pt_ref_cnt))
603 spin_lock(&dev->se_port_lock);
605 core_alua_free_tg_pt_gp_mem(port);
607 list_del(&port->sep_list);
608 dev->dev_port_count--;
613 struct se_device *dev,
614 struct se_portal_group *tpg,
617 struct se_port *port;
619 port = core_alloc_port(dev);
621 return PTR_ERR(port);
623 lun->lun_se_dev = dev;
626 atomic_inc(&dev->dev_export_obj.obj_access_count);
627 core_export_port(dev, tpg, port, lun);
631 void core_dev_unexport(
632 struct se_device *dev,
633 struct se_portal_group *tpg,
636 struct se_port *port = lun->lun_sep;
638 spin_lock(&lun->lun_sep_lock);
639 if (lun->lun_se_dev == NULL) {
640 spin_unlock(&lun->lun_sep_lock);
643 spin_unlock(&lun->lun_sep_lock);
645 spin_lock(&dev->se_port_lock);
646 atomic_dec(&dev->dev_export_obj.obj_access_count);
647 core_release_port(dev, port);
648 spin_unlock(&dev->se_port_lock);
651 lun->lun_se_dev = NULL;
654 int transport_core_report_lun_response(struct se_cmd *se_cmd)
656 struct se_dev_entry *deve;
657 struct se_lun *se_lun;
658 struct se_session *se_sess = se_cmd->se_sess;
659 struct se_task *se_task;
661 u32 cdb_offset = 0, lun_count = 0, offset = 8, i;
663 list_for_each_entry(se_task, &se_cmd->t_task_list, t_list)
667 printk(KERN_ERR "Unable to locate struct se_task for struct se_cmd\n");
668 return PYX_TRANSPORT_LU_COMM_FAILURE;
671 buf = transport_kmap_first_data_page(se_cmd);
674 * If no struct se_session pointer is present, this struct se_cmd is
675 * coming via a target_core_mod PASSTHROUGH op, and not through
676 * a $FABRIC_MOD. In that case, report LUN=0 only.
679 int_to_scsilun(0, (struct scsi_lun *)&buf[offset]);
684 spin_lock_irq(&se_sess->se_node_acl->device_list_lock);
685 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
686 deve = &se_sess->se_node_acl->device_list[i];
687 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
689 se_lun = deve->se_lun;
691 * We determine the correct LUN LIST LENGTH even once we
692 * have reached the initial allocation length.
696 if ((cdb_offset + 8) >= se_cmd->data_length)
699 int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]);
703 spin_unlock_irq(&se_sess->se_node_acl->device_list_lock);
706 * See SPC3 r07, page 159.
709 transport_kunmap_first_data_page(se_cmd);
711 buf[0] = ((lun_count >> 24) & 0xff);
712 buf[1] = ((lun_count >> 16) & 0xff);
713 buf[2] = ((lun_count >> 8) & 0xff);
714 buf[3] = (lun_count & 0xff);
716 return PYX_TRANSPORT_SENT_TO_TRANSPORT;
719 /* se_release_device_for_hba():
723 void se_release_device_for_hba(struct se_device *dev)
725 struct se_hba *hba = dev->se_hba;
727 if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) ||
728 (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) ||
729 (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) ||
730 (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) ||
731 (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED))
735 kthread_stop(dev->process_thread);
736 if (dev->transport->free_device)
737 dev->transport->free_device(dev->dev_ptr);
740 spin_lock(&hba->device_lock);
741 list_del(&dev->dev_list);
743 spin_unlock(&hba->device_lock);
745 core_scsi3_free_all_registrations(dev);
746 se_release_vpd_for_dev(dev);
751 void se_release_vpd_for_dev(struct se_device *dev)
753 struct t10_vpd *vpd, *vpd_tmp;
755 spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock);
756 list_for_each_entry_safe(vpd, vpd_tmp,
757 &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) {
758 list_del(&vpd->vpd_list);
761 spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock);
764 /* se_free_virtual_device():
766 * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers.
768 int se_free_virtual_device(struct se_device *dev, struct se_hba *hba)
770 if (!list_empty(&dev->dev_sep_list))
773 core_alua_free_lu_gp_mem(dev);
774 se_release_device_for_hba(dev);
779 static void se_dev_start(struct se_device *dev)
781 struct se_hba *hba = dev->se_hba;
783 spin_lock(&hba->device_lock);
784 atomic_inc(&dev->dev_obj.obj_access_count);
785 if (atomic_read(&dev->dev_obj.obj_access_count) == 1) {
786 if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) {
787 dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED;
788 dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED;
789 } else if (dev->dev_status &
790 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) {
792 ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED;
793 dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED;
796 spin_unlock(&hba->device_lock);
799 static void se_dev_stop(struct se_device *dev)
801 struct se_hba *hba = dev->se_hba;
803 spin_lock(&hba->device_lock);
804 atomic_dec(&dev->dev_obj.obj_access_count);
805 if (atomic_read(&dev->dev_obj.obj_access_count) == 0) {
806 if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) {
807 dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED;
808 dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED;
809 } else if (dev->dev_status &
810 TRANSPORT_DEVICE_OFFLINE_ACTIVATED) {
811 dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED;
812 dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED;
815 spin_unlock(&hba->device_lock);
818 int se_dev_check_online(struct se_device *dev)
823 spin_lock_irqsave(&dev->dev_status_lock, flags);
824 ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) ||
825 (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1;
826 spin_unlock_irqrestore(&dev->dev_status_lock, flags);
831 int se_dev_check_shutdown(struct se_device *dev)
835 spin_lock_irq(&dev->dev_status_lock);
836 ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN);
837 spin_unlock_irq(&dev->dev_status_lock);
842 void se_dev_set_default_attribs(
843 struct se_device *dev,
844 struct se_dev_limits *dev_limits)
846 struct queue_limits *limits = &dev_limits->limits;
848 dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO;
849 dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE;
850 dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ;
851 dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE;
852 dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL;
853 dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS;
854 dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU;
855 dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS;
856 dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS;
857 dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA;
858 dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
859 dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT;
861 * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK
862 * iblock_create_virtdevice() from struct queue_limits values
863 * if blk_queue_discard()==1
865 dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT;
866 dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count =
867 DA_MAX_UNMAP_BLOCK_DESC_COUNT;
868 dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT;
869 dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment =
870 DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT;
872 * block_size is based on subsystem plugin dependent requirements.
874 dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size;
875 dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size;
877 * max_sectors is based on subsystem plugin dependent requirements.
879 dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors;
880 dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors;
882 * Set optimal_sectors from max_sectors, which can be lowered via
885 dev->se_sub_dev->se_dev_attrib.optimal_sectors = limits->max_sectors;
887 * queue_depth is based on subsystem plugin dependent requirements.
889 dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth;
890 dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth;
893 int se_dev_set_task_timeout(struct se_device *dev, u32 task_timeout)
895 if (task_timeout > DA_TASK_TIMEOUT_MAX) {
896 printk(KERN_ERR "dev[%p]: Passed task_timeout: %u larger then"
897 " DA_TASK_TIMEOUT_MAX\n", dev, task_timeout);
900 dev->se_sub_dev->se_dev_attrib.task_timeout = task_timeout;
901 printk(KERN_INFO "dev[%p]: Set SE Device task_timeout: %u\n",
908 int se_dev_set_max_unmap_lba_count(
909 struct se_device *dev,
910 u32 max_unmap_lba_count)
912 dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count;
913 printk(KERN_INFO "dev[%p]: Set max_unmap_lba_count: %u\n",
914 dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count);
918 int se_dev_set_max_unmap_block_desc_count(
919 struct se_device *dev,
920 u32 max_unmap_block_desc_count)
922 dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count =
923 max_unmap_block_desc_count;
924 printk(KERN_INFO "dev[%p]: Set max_unmap_block_desc_count: %u\n",
925 dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count);
929 int se_dev_set_unmap_granularity(
930 struct se_device *dev,
931 u32 unmap_granularity)
933 dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity;
934 printk(KERN_INFO "dev[%p]: Set unmap_granularity: %u\n",
935 dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity);
939 int se_dev_set_unmap_granularity_alignment(
940 struct se_device *dev,
941 u32 unmap_granularity_alignment)
943 dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment;
944 printk(KERN_INFO "dev[%p]: Set unmap_granularity_alignment: %u\n",
945 dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment);
949 int se_dev_set_emulate_dpo(struct se_device *dev, int flag)
951 if ((flag != 0) && (flag != 1)) {
952 printk(KERN_ERR "Illegal value %d\n", flag);
955 if (dev->transport->dpo_emulated == NULL) {
956 printk(KERN_ERR "dev->transport->dpo_emulated is NULL\n");
959 if (dev->transport->dpo_emulated(dev) == 0) {
960 printk(KERN_ERR "dev->transport->dpo_emulated not supported\n");
963 dev->se_sub_dev->se_dev_attrib.emulate_dpo = flag;
964 printk(KERN_INFO "dev[%p]: SE Device Page Out (DPO) Emulation"
965 " bit: %d\n", dev, dev->se_sub_dev->se_dev_attrib.emulate_dpo);
969 int se_dev_set_emulate_fua_write(struct se_device *dev, int flag)
971 if ((flag != 0) && (flag != 1)) {
972 printk(KERN_ERR "Illegal value %d\n", flag);
975 if (dev->transport->fua_write_emulated == NULL) {
976 printk(KERN_ERR "dev->transport->fua_write_emulated is NULL\n");
979 if (dev->transport->fua_write_emulated(dev) == 0) {
980 printk(KERN_ERR "dev->transport->fua_write_emulated not supported\n");
983 dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag;
984 printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access WRITEs: %d\n",
985 dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write);
989 int se_dev_set_emulate_fua_read(struct se_device *dev, int flag)
991 if ((flag != 0) && (flag != 1)) {
992 printk(KERN_ERR "Illegal value %d\n", flag);
995 if (dev->transport->fua_read_emulated == NULL) {
996 printk(KERN_ERR "dev->transport->fua_read_emulated is NULL\n");
999 if (dev->transport->fua_read_emulated(dev) == 0) {
1000 printk(KERN_ERR "dev->transport->fua_read_emulated not supported\n");
1003 dev->se_sub_dev->se_dev_attrib.emulate_fua_read = flag;
1004 printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access READs: %d\n",
1005 dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_read);
1009 int se_dev_set_emulate_write_cache(struct se_device *dev, int flag)
1011 if ((flag != 0) && (flag != 1)) {
1012 printk(KERN_ERR "Illegal value %d\n", flag);
1015 if (dev->transport->write_cache_emulated == NULL) {
1016 printk(KERN_ERR "dev->transport->write_cache_emulated is NULL\n");
1019 if (dev->transport->write_cache_emulated(dev) == 0) {
1020 printk(KERN_ERR "dev->transport->write_cache_emulated not supported\n");
1023 dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag;
1024 printk(KERN_INFO "dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n",
1025 dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache);
1029 int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag)
1031 if ((flag != 0) && (flag != 1) && (flag != 2)) {
1032 printk(KERN_ERR "Illegal value %d\n", flag);
1036 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1037 printk(KERN_ERR "dev[%p]: Unable to change SE Device"
1038 " UA_INTRLCK_CTRL while dev_export_obj: %d count"
1040 atomic_read(&dev->dev_export_obj.obj_access_count));
1043 dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag;
1044 printk(KERN_INFO "dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n",
1045 dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl);
1050 int se_dev_set_emulate_tas(struct se_device *dev, int flag)
1052 if ((flag != 0) && (flag != 1)) {
1053 printk(KERN_ERR "Illegal value %d\n", flag);
1057 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1058 printk(KERN_ERR "dev[%p]: Unable to change SE Device TAS while"
1059 " dev_export_obj: %d count exists\n", dev,
1060 atomic_read(&dev->dev_export_obj.obj_access_count));
1063 dev->se_sub_dev->se_dev_attrib.emulate_tas = flag;
1064 printk(KERN_INFO "dev[%p]: SE Device TASK_ABORTED status bit: %s\n",
1065 dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled");
1070 int se_dev_set_emulate_tpu(struct se_device *dev, int flag)
1072 if ((flag != 0) && (flag != 1)) {
1073 printk(KERN_ERR "Illegal value %d\n", flag);
1077 * We expect this value to be non-zero when generic Block Layer
1078 * Discard supported is detected iblock_create_virtdevice().
1080 if (!(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count)) {
1081 printk(KERN_ERR "Generic Block Discard not supported\n");
1085 dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag;
1086 printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n",
1091 int se_dev_set_emulate_tpws(struct se_device *dev, int flag)
1093 if ((flag != 0) && (flag != 1)) {
1094 printk(KERN_ERR "Illegal value %d\n", flag);
1098 * We expect this value to be non-zero when generic Block Layer
1099 * Discard supported is detected iblock_create_virtdevice().
1101 if (!(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count)) {
1102 printk(KERN_ERR "Generic Block Discard not supported\n");
1106 dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag;
1107 printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n",
1112 int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag)
1114 if ((flag != 0) && (flag != 1)) {
1115 printk(KERN_ERR "Illegal value %d\n", flag);
1118 dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag;
1119 printk(KERN_INFO "dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev,
1120 (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled");
1124 int se_dev_set_is_nonrot(struct se_device *dev, int flag)
1126 if ((flag != 0) && (flag != 1)) {
1127 printk(KERN_ERR "Illegal value %d\n", flag);
1130 dev->se_sub_dev->se_dev_attrib.is_nonrot = flag;
1131 printk(KERN_INFO "dev[%p]: SE Device is_nonrot bit: %d\n",
1137 * Note, this can only be called on unexported SE Device Object.
1139 int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
1141 u32 orig_queue_depth = dev->queue_depth;
1143 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1144 printk(KERN_ERR "dev[%p]: Unable to change SE Device TCQ while"
1145 " dev_export_obj: %d count exists\n", dev,
1146 atomic_read(&dev->dev_export_obj.obj_access_count));
1149 if (!(queue_depth)) {
1150 printk(KERN_ERR "dev[%p]: Illegal ZERO value for queue"
1155 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1156 if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) {
1157 printk(KERN_ERR "dev[%p]: Passed queue_depth: %u"
1158 " exceeds TCM/SE_Device TCQ: %u\n",
1160 dev->se_sub_dev->se_dev_attrib.hw_queue_depth);
1164 if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) {
1165 if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) {
1166 printk(KERN_ERR "dev[%p]: Passed queue_depth:"
1167 " %u exceeds TCM/SE_Device MAX"
1168 " TCQ: %u\n", dev, queue_depth,
1169 dev->se_sub_dev->se_dev_attrib.hw_queue_depth);
1175 dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth;
1176 if (queue_depth > orig_queue_depth)
1177 atomic_add(queue_depth - orig_queue_depth, &dev->depth_left);
1178 else if (queue_depth < orig_queue_depth)
1179 atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left);
1181 printk(KERN_INFO "dev[%p]: SE Device TCQ Depth changed to: %u\n",
1186 int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors)
1188 int force = 0; /* Force setting for VDEVS */
1190 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1191 printk(KERN_ERR "dev[%p]: Unable to change SE Device"
1192 " max_sectors while dev_export_obj: %d count exists\n",
1193 dev, atomic_read(&dev->dev_export_obj.obj_access_count));
1196 if (!(max_sectors)) {
1197 printk(KERN_ERR "dev[%p]: Illegal ZERO value for"
1198 " max_sectors\n", dev);
1201 if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) {
1202 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u less than"
1203 " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors,
1204 DA_STATUS_MAX_SECTORS_MIN);
1207 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1208 if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) {
1209 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u"
1210 " greater than TCM/SE_Device max_sectors:"
1211 " %u\n", dev, max_sectors,
1212 dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
1216 if (!(force) && (max_sectors >
1217 dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) {
1218 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u"
1219 " greater than TCM/SE_Device max_sectors"
1220 ": %u, use force=1 to override.\n", dev,
1221 max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors);
1224 if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) {
1225 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u"
1226 " greater than DA_STATUS_MAX_SECTORS_MAX:"
1227 " %u\n", dev, max_sectors,
1228 DA_STATUS_MAX_SECTORS_MAX);
1233 dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors;
1234 printk("dev[%p]: SE Device max_sectors changed to %u\n",
1239 int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
1241 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1242 printk(KERN_ERR "dev[%p]: Unable to change SE Device"
1243 " optimal_sectors while dev_export_obj: %d count exists\n",
1244 dev, atomic_read(&dev->dev_export_obj.obj_access_count));
1247 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1248 printk(KERN_ERR "dev[%p]: Passed optimal_sectors cannot be"
1249 " changed for TCM/pSCSI\n", dev);
1252 if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.max_sectors) {
1253 printk(KERN_ERR "dev[%p]: Passed optimal_sectors %u cannot be"
1254 " greater than max_sectors: %u\n", dev,
1255 optimal_sectors, dev->se_sub_dev->se_dev_attrib.max_sectors);
1259 dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors;
1260 printk(KERN_INFO "dev[%p]: SE Device optimal_sectors changed to %u\n",
1261 dev, optimal_sectors);
1265 int se_dev_set_block_size(struct se_device *dev, u32 block_size)
1267 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1268 printk(KERN_ERR "dev[%p]: Unable to change SE Device block_size"
1269 " while dev_export_obj: %d count exists\n", dev,
1270 atomic_read(&dev->dev_export_obj.obj_access_count));
1274 if ((block_size != 512) &&
1275 (block_size != 1024) &&
1276 (block_size != 2048) &&
1277 (block_size != 4096)) {
1278 printk(KERN_ERR "dev[%p]: Illegal value for block_device: %u"
1279 " for SE device, must be 512, 1024, 2048 or 4096\n",
1284 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1285 printk(KERN_ERR "dev[%p]: Not allowed to change block_size for"
1286 " Physical Device, use for Linux/SCSI to change"
1287 " block_size for underlying hardware\n", dev);
1291 dev->se_sub_dev->se_dev_attrib.block_size = block_size;
1292 printk(KERN_INFO "dev[%p]: SE Device block_size changed to %u\n",
1297 struct se_lun *core_dev_add_lun(
1298 struct se_portal_group *tpg,
1300 struct se_device *dev,
1303 struct se_lun *lun_p;
1306 if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) {
1307 printk(KERN_ERR "Unable to export struct se_device while dev_access_obj: %d\n",
1308 atomic_read(&dev->dev_access_obj.obj_access_count));
1312 lun_p = core_tpg_pre_addlun(tpg, lun);
1313 if ((IS_ERR(lun_p)) || !(lun_p))
1316 if (dev->dev_flags & DF_READ_ONLY)
1317 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
1319 lun_access = TRANSPORT_LUNFLAGS_READ_WRITE;
1321 if (core_tpg_post_addlun(tpg, lun_p, lun_access, dev) < 0)
1324 printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from"
1325 " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(),
1326 tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun,
1327 tpg->se_tpg_tfo->get_fabric_name(), hba->hba_id);
1329 * Update LUN maps for dynamically added initiators when
1330 * generate_node_acl is enabled.
1332 if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) {
1333 struct se_node_acl *acl;
1334 spin_lock_bh(&tpg->acl_node_lock);
1335 list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
1336 if (acl->dynamic_node_acl) {
1337 spin_unlock_bh(&tpg->acl_node_lock);
1338 core_tpg_add_node_to_devs(acl, tpg);
1339 spin_lock_bh(&tpg->acl_node_lock);
1342 spin_unlock_bh(&tpg->acl_node_lock);
1348 /* core_dev_del_lun():
1352 int core_dev_del_lun(
1353 struct se_portal_group *tpg,
1359 lun = core_tpg_pre_dellun(tpg, unpacked_lun, &ret);
1363 core_tpg_post_dellun(tpg, lun);
1365 printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from"
1366 " device object\n", tpg->se_tpg_tfo->get_fabric_name(),
1367 tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun,
1368 tpg->se_tpg_tfo->get_fabric_name());
1373 struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun)
1377 spin_lock(&tpg->tpg_lun_lock);
1378 if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
1379 printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS"
1380 "_PER_TPG-1: %u for Target Portal Group: %hu\n",
1381 tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1382 TRANSPORT_MAX_LUNS_PER_TPG-1,
1383 tpg->se_tpg_tfo->tpg_get_tag(tpg));
1384 spin_unlock(&tpg->tpg_lun_lock);
1387 lun = &tpg->tpg_lun_list[unpacked_lun];
1389 if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) {
1390 printk(KERN_ERR "%s Logical Unit Number: %u is not free on"
1391 " Target Portal Group: %hu, ignoring request.\n",
1392 tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1393 tpg->se_tpg_tfo->tpg_get_tag(tpg));
1394 spin_unlock(&tpg->tpg_lun_lock);
1397 spin_unlock(&tpg->tpg_lun_lock);
1402 /* core_dev_get_lun():
1406 static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun)
1410 spin_lock(&tpg->tpg_lun_lock);
1411 if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
1412 printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER"
1413 "_TPG-1: %u for Target Portal Group: %hu\n",
1414 tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1415 TRANSPORT_MAX_LUNS_PER_TPG-1,
1416 tpg->se_tpg_tfo->tpg_get_tag(tpg));
1417 spin_unlock(&tpg->tpg_lun_lock);
1420 lun = &tpg->tpg_lun_list[unpacked_lun];
1422 if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) {
1423 printk(KERN_ERR "%s Logical Unit Number: %u is not active on"
1424 " Target Portal Group: %hu, ignoring request.\n",
1425 tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1426 tpg->se_tpg_tfo->tpg_get_tag(tpg));
1427 spin_unlock(&tpg->tpg_lun_lock);
1430 spin_unlock(&tpg->tpg_lun_lock);
1435 struct se_lun_acl *core_dev_init_initiator_node_lun_acl(
1436 struct se_portal_group *tpg,
1438 char *initiatorname,
1441 struct se_lun_acl *lacl;
1442 struct se_node_acl *nacl;
1444 if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) {
1445 printk(KERN_ERR "%s InitiatorName exceeds maximum size.\n",
1446 tpg->se_tpg_tfo->get_fabric_name());
1450 nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname);
1455 lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL);
1457 printk(KERN_ERR "Unable to allocate memory for struct se_lun_acl.\n");
1462 INIT_LIST_HEAD(&lacl->lacl_list);
1463 lacl->mapped_lun = mapped_lun;
1464 lacl->se_lun_nacl = nacl;
1465 snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname);
1470 int core_dev_add_initiator_node_lun_acl(
1471 struct se_portal_group *tpg,
1472 struct se_lun_acl *lacl,
1477 struct se_node_acl *nacl;
1479 lun = core_dev_get_lun(tpg, unpacked_lun);
1481 printk(KERN_ERR "%s Logical Unit Number: %u is not active on"
1482 " Target Portal Group: %hu, ignoring request.\n",
1483 tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1484 tpg->se_tpg_tfo->tpg_get_tag(tpg));
1488 nacl = lacl->se_lun_nacl;
1492 if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) &&
1493 (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE))
1494 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
1498 if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun,
1499 lun_access, nacl, tpg, 1) < 0)
1502 spin_lock(&lun->lun_acl_lock);
1503 list_add_tail(&lacl->lacl_list, &lun->lun_acl_list);
1504 atomic_inc(&lun->lun_acl_count);
1505 smp_mb__after_atomic_inc();
1506 spin_unlock(&lun->lun_acl_lock);
1508 printk(KERN_INFO "%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for "
1509 " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(),
1510 tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun,
1511 (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO",
1512 lacl->initiatorname);
1514 * Check to see if there are any existing persistent reservation APTPL
1515 * pre-registrations that need to be enabled for this LUN ACL..
1517 core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl);
1521 /* core_dev_del_initiator_node_lun_acl():
1525 int core_dev_del_initiator_node_lun_acl(
1526 struct se_portal_group *tpg,
1528 struct se_lun_acl *lacl)
1530 struct se_node_acl *nacl;
1532 nacl = lacl->se_lun_nacl;
1536 spin_lock(&lun->lun_acl_lock);
1537 list_del(&lacl->lacl_list);
1538 atomic_dec(&lun->lun_acl_count);
1539 smp_mb__after_atomic_dec();
1540 spin_unlock(&lun->lun_acl_lock);
1542 core_update_device_list_for_node(lun, NULL, lacl->mapped_lun,
1543 TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0);
1545 lacl->se_lun = NULL;
1547 printk(KERN_INFO "%s_TPG[%hu]_LUN[%u] - Removed ACL for"
1548 " InitiatorNode: %s Mapped LUN: %u\n",
1549 tpg->se_tpg_tfo->get_fabric_name(),
1550 tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
1551 lacl->initiatorname, lacl->mapped_lun);
1556 void core_dev_free_initiator_node_lun_acl(
1557 struct se_portal_group *tpg,
1558 struct se_lun_acl *lacl)
1560 printk("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s"
1561 " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(),
1562 tpg->se_tpg_tfo->tpg_get_tag(tpg),
1563 tpg->se_tpg_tfo->get_fabric_name(),
1564 lacl->initiatorname, lacl->mapped_lun);
1569 int core_dev_setup_virtual_lun0(void)
1572 struct se_device *dev;
1573 struct se_subsystem_dev *se_dev = NULL;
1574 struct se_subsystem_api *t;
1578 hba = core_alloc_hba("rd_dr", 0, HBA_FLAGS_INTERNAL_USE);
1580 return PTR_ERR(hba);
1585 se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL);
1587 printk(KERN_ERR "Unable to allocate memory for"
1588 " struct se_subsystem_dev\n");
1592 INIT_LIST_HEAD(&se_dev->se_dev_node);
1593 INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list);
1594 spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock);
1595 INIT_LIST_HEAD(&se_dev->t10_pr.registration_list);
1596 INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list);
1597 spin_lock_init(&se_dev->t10_pr.registration_lock);
1598 spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock);
1599 INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list);
1600 spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock);
1601 spin_lock_init(&se_dev->se_dev_lock);
1602 se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN;
1603 se_dev->t10_wwn.t10_sub_dev = se_dev;
1604 se_dev->t10_alua.t10_sub_dev = se_dev;
1605 se_dev->se_dev_attrib.da_sub_dev = se_dev;
1606 se_dev->se_dev_hba = hba;
1608 se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0");
1609 if (!(se_dev->se_dev_su_ptr)) {
1610 printk(KERN_ERR "Unable to locate subsystem dependent pointer"
1611 " from allocate_virtdevice()\n");
1615 lun0_su_dev = se_dev;
1618 sprintf(buf, "rd_pages=8");
1619 t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf));
1621 dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr);
1626 se_dev->se_dev_ptr = dev;
1634 core_delete_hba(lun0_hba);
1641 void core_dev_release_virtual_lun0(void)
1643 struct se_hba *hba = lun0_hba;
1644 struct se_subsystem_dev *su_dev = lun0_su_dev;
1650 se_free_virtual_device(g_lun0_dev, hba);
1653 core_delete_hba(hba);