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 * (c) Copyright 2003-2013 Datera, Inc.
9 * Nicholas A. Bellinger <nab@kernel.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 ******************************************************************************/
27 #include <linux/net.h>
28 #include <linux/string.h>
29 #include <linux/delay.h>
30 #include <linux/timer.h>
31 #include <linux/slab.h>
32 #include <linux/spinlock.h>
33 #include <linux/kthread.h>
35 #include <linux/export.h>
38 #include <scsi/scsi.h>
39 #include <scsi/scsi_device.h>
41 #include <target/target_core_base.h>
42 #include <target/target_core_backend.h>
43 #include <target/target_core_fabric.h>
45 #include "target_core_internal.h"
46 #include "target_core_alua.h"
47 #include "target_core_pr.h"
48 #include "target_core_ua.h"
50 DEFINE_MUTEX(g_device_mutex
);
51 LIST_HEAD(g_device_list
);
53 static struct se_hba
*lun0_hba
;
54 /* not static, needed by tpg.c */
55 struct se_device
*g_lun0_dev
;
58 transport_lookup_cmd_lun(struct se_cmd
*se_cmd
, u32 unpacked_lun
)
60 struct se_lun
*se_lun
= NULL
;
61 struct se_session
*se_sess
= se_cmd
->se_sess
;
62 struct se_device
*dev
;
65 if (unpacked_lun
>= TRANSPORT_MAX_LUNS_PER_TPG
)
66 return TCM_NON_EXISTENT_LUN
;
68 spin_lock_irqsave(&se_sess
->se_node_acl
->device_list_lock
, flags
);
69 se_cmd
->se_deve
= se_sess
->se_node_acl
->device_list
[unpacked_lun
];
70 if (se_cmd
->se_deve
->lun_flags
& TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
) {
71 struct se_dev_entry
*deve
= se_cmd
->se_deve
;
75 if ((se_cmd
->data_direction
== DMA_TO_DEVICE
) &&
76 (deve
->lun_flags
& TRANSPORT_LUNFLAGS_READ_ONLY
)) {
77 pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
78 " Access for 0x%08x\n",
79 se_cmd
->se_tfo
->get_fabric_name(),
81 spin_unlock_irqrestore(&se_sess
->se_node_acl
->device_list_lock
, flags
);
82 return TCM_WRITE_PROTECTED
;
85 if (se_cmd
->data_direction
== DMA_TO_DEVICE
)
86 deve
->write_bytes
+= se_cmd
->data_length
;
87 else if (se_cmd
->data_direction
== DMA_FROM_DEVICE
)
88 deve
->read_bytes
+= se_cmd
->data_length
;
90 se_lun
= deve
->se_lun
;
91 se_cmd
->se_lun
= deve
->se_lun
;
92 se_cmd
->pr_res_key
= deve
->pr_res_key
;
93 se_cmd
->orig_fe_lun
= unpacked_lun
;
94 se_cmd
->se_cmd_flags
|= SCF_SE_LUN_CMD
;
96 spin_unlock_irqrestore(&se_sess
->se_node_acl
->device_list_lock
, flags
);
100 * Use the se_portal_group->tpg_virt_lun0 to allow for
101 * REPORT_LUNS, et al to be returned when no active
102 * MappedLUN=0 exists for this Initiator Port.
104 if (unpacked_lun
!= 0) {
105 pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
106 " Access for 0x%08x\n",
107 se_cmd
->se_tfo
->get_fabric_name(),
109 return TCM_NON_EXISTENT_LUN
;
112 * Force WRITE PROTECT for virtual LUN 0
114 if ((se_cmd
->data_direction
!= DMA_FROM_DEVICE
) &&
115 (se_cmd
->data_direction
!= DMA_NONE
))
116 return TCM_WRITE_PROTECTED
;
118 se_lun
= &se_sess
->se_tpg
->tpg_virt_lun0
;
119 se_cmd
->se_lun
= &se_sess
->se_tpg
->tpg_virt_lun0
;
120 se_cmd
->orig_fe_lun
= 0;
121 se_cmd
->se_cmd_flags
|= SCF_SE_LUN_CMD
;
124 /* Directly associate cmd with se_dev */
125 se_cmd
->se_dev
= se_lun
->lun_se_dev
;
127 /* TODO: get rid of this and use atomics for stats */
128 dev
= se_lun
->lun_se_dev
;
129 spin_lock_irqsave(&dev
->stats_lock
, flags
);
131 if (se_cmd
->data_direction
== DMA_TO_DEVICE
)
132 dev
->write_bytes
+= se_cmd
->data_length
;
133 else if (se_cmd
->data_direction
== DMA_FROM_DEVICE
)
134 dev
->read_bytes
+= se_cmd
->data_length
;
135 spin_unlock_irqrestore(&dev
->stats_lock
, flags
);
137 spin_lock_irqsave(&se_lun
->lun_cmd_lock
, flags
);
138 list_add_tail(&se_cmd
->se_lun_node
, &se_lun
->lun_cmd_list
);
139 spin_unlock_irqrestore(&se_lun
->lun_cmd_lock
, flags
);
143 EXPORT_SYMBOL(transport_lookup_cmd_lun
);
145 int transport_lookup_tmr_lun(struct se_cmd
*se_cmd
, u32 unpacked_lun
)
147 struct se_dev_entry
*deve
;
148 struct se_lun
*se_lun
= NULL
;
149 struct se_session
*se_sess
= se_cmd
->se_sess
;
150 struct se_tmr_req
*se_tmr
= se_cmd
->se_tmr_req
;
153 if (unpacked_lun
>= TRANSPORT_MAX_LUNS_PER_TPG
)
156 spin_lock_irqsave(&se_sess
->se_node_acl
->device_list_lock
, flags
);
157 se_cmd
->se_deve
= se_sess
->se_node_acl
->device_list
[unpacked_lun
];
158 deve
= se_cmd
->se_deve
;
160 if (deve
->lun_flags
& TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
) {
161 se_tmr
->tmr_lun
= deve
->se_lun
;
162 se_cmd
->se_lun
= deve
->se_lun
;
163 se_lun
= deve
->se_lun
;
164 se_cmd
->pr_res_key
= deve
->pr_res_key
;
165 se_cmd
->orig_fe_lun
= unpacked_lun
;
167 spin_unlock_irqrestore(&se_sess
->se_node_acl
->device_list_lock
, flags
);
170 pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
171 " Access for 0x%08x\n",
172 se_cmd
->se_tfo
->get_fabric_name(),
177 /* Directly associate cmd with se_dev */
178 se_cmd
->se_dev
= se_lun
->lun_se_dev
;
179 se_tmr
->tmr_dev
= se_lun
->lun_se_dev
;
181 spin_lock_irqsave(&se_tmr
->tmr_dev
->se_tmr_lock
, flags
);
182 list_add_tail(&se_tmr
->tmr_list
, &se_tmr
->tmr_dev
->dev_tmr_list
);
183 spin_unlock_irqrestore(&se_tmr
->tmr_dev
->se_tmr_lock
, flags
);
187 EXPORT_SYMBOL(transport_lookup_tmr_lun
);
190 * This function is called from core_scsi3_emulate_pro_register_and_move()
191 * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count
192 * when a matching rtpi is found.
194 struct se_dev_entry
*core_get_se_deve_from_rtpi(
195 struct se_node_acl
*nacl
,
198 struct se_dev_entry
*deve
;
200 struct se_port
*port
;
201 struct se_portal_group
*tpg
= nacl
->se_tpg
;
204 spin_lock_irq(&nacl
->device_list_lock
);
205 for (i
= 0; i
< TRANSPORT_MAX_LUNS_PER_TPG
; i
++) {
206 deve
= nacl
->device_list
[i
];
208 if (!(deve
->lun_flags
& TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
))
213 pr_err("%s device entries device pointer is"
214 " NULL, but Initiator has access.\n",
215 tpg
->se_tpg_tfo
->get_fabric_name());
220 pr_err("%s device entries device pointer is"
221 " NULL, but Initiator has access.\n",
222 tpg
->se_tpg_tfo
->get_fabric_name());
225 if (port
->sep_rtpi
!= rtpi
)
228 atomic_inc(&deve
->pr_ref_count
);
229 smp_mb__after_atomic_inc();
230 spin_unlock_irq(&nacl
->device_list_lock
);
234 spin_unlock_irq(&nacl
->device_list_lock
);
239 int core_free_device_list_for_node(
240 struct se_node_acl
*nacl
,
241 struct se_portal_group
*tpg
)
243 struct se_dev_entry
*deve
;
247 if (!nacl
->device_list
)
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
))
258 pr_err("%s device entries device pointer is"
259 " NULL, but Initiator has access.\n",
260 tpg
->se_tpg_tfo
->get_fabric_name());
265 spin_unlock_irq(&nacl
->device_list_lock
);
266 core_disable_device_list_for_node(lun
, NULL
, deve
->mapped_lun
,
267 TRANSPORT_LUNFLAGS_NO_ACCESS
, nacl
, tpg
);
268 spin_lock_irq(&nacl
->device_list_lock
);
270 spin_unlock_irq(&nacl
->device_list_lock
);
272 array_free(nacl
->device_list
, TRANSPORT_MAX_LUNS_PER_TPG
);
273 nacl
->device_list
= NULL
;
278 void core_update_device_list_access(
281 struct se_node_acl
*nacl
)
283 struct se_dev_entry
*deve
;
285 spin_lock_irq(&nacl
->device_list_lock
);
286 deve
= nacl
->device_list
[mapped_lun
];
287 if (lun_access
& TRANSPORT_LUNFLAGS_READ_WRITE
) {
288 deve
->lun_flags
&= ~TRANSPORT_LUNFLAGS_READ_ONLY
;
289 deve
->lun_flags
|= TRANSPORT_LUNFLAGS_READ_WRITE
;
291 deve
->lun_flags
&= ~TRANSPORT_LUNFLAGS_READ_WRITE
;
292 deve
->lun_flags
|= TRANSPORT_LUNFLAGS_READ_ONLY
;
294 spin_unlock_irq(&nacl
->device_list_lock
);
297 /* core_enable_device_list_for_node():
301 int core_enable_device_list_for_node(
303 struct se_lun_acl
*lun_acl
,
306 struct se_node_acl
*nacl
,
307 struct se_portal_group
*tpg
)
309 struct se_port
*port
= lun
->lun_sep
;
310 struct se_dev_entry
*deve
;
312 spin_lock_irq(&nacl
->device_list_lock
);
314 deve
= nacl
->device_list
[mapped_lun
];
317 * Check if the call is handling demo mode -> explict LUN ACL
318 * transition. This transition must be for the same struct se_lun
319 * + mapped_lun that was setup in demo mode..
321 if (deve
->lun_flags
& TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
) {
322 if (deve
->se_lun_acl
!= NULL
) {
323 pr_err("struct se_dev_entry->se_lun_acl"
324 " already set for demo mode -> explict"
325 " LUN ACL transition\n");
326 spin_unlock_irq(&nacl
->device_list_lock
);
329 if (deve
->se_lun
!= lun
) {
330 pr_err("struct se_dev_entry->se_lun does"
331 " match passed struct se_lun for demo mode"
332 " -> explict LUN ACL transition\n");
333 spin_unlock_irq(&nacl
->device_list_lock
);
336 deve
->se_lun_acl
= lun_acl
;
338 if (lun_access
& TRANSPORT_LUNFLAGS_READ_WRITE
) {
339 deve
->lun_flags
&= ~TRANSPORT_LUNFLAGS_READ_ONLY
;
340 deve
->lun_flags
|= TRANSPORT_LUNFLAGS_READ_WRITE
;
342 deve
->lun_flags
&= ~TRANSPORT_LUNFLAGS_READ_WRITE
;
343 deve
->lun_flags
|= TRANSPORT_LUNFLAGS_READ_ONLY
;
346 spin_unlock_irq(&nacl
->device_list_lock
);
351 deve
->se_lun_acl
= lun_acl
;
352 deve
->mapped_lun
= mapped_lun
;
353 deve
->lun_flags
|= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
;
355 if (lun_access
& TRANSPORT_LUNFLAGS_READ_WRITE
) {
356 deve
->lun_flags
&= ~TRANSPORT_LUNFLAGS_READ_ONLY
;
357 deve
->lun_flags
|= TRANSPORT_LUNFLAGS_READ_WRITE
;
359 deve
->lun_flags
&= ~TRANSPORT_LUNFLAGS_READ_WRITE
;
360 deve
->lun_flags
|= TRANSPORT_LUNFLAGS_READ_ONLY
;
363 deve
->creation_time
= get_jiffies_64();
364 deve
->attach_count
++;
365 spin_unlock_irq(&nacl
->device_list_lock
);
367 spin_lock_bh(&port
->sep_alua_lock
);
368 list_add_tail(&deve
->alua_port_list
, &port
->sep_alua_list
);
369 spin_unlock_bh(&port
->sep_alua_lock
);
374 /* core_disable_device_list_for_node():
378 int core_disable_device_list_for_node(
380 struct se_lun_acl
*lun_acl
,
383 struct se_node_acl
*nacl
,
384 struct se_portal_group
*tpg
)
386 struct se_port
*port
= lun
->lun_sep
;
387 struct se_dev_entry
*deve
= nacl
->device_list
[mapped_lun
];
390 * If the MappedLUN entry is being disabled, the entry in
391 * port->sep_alua_list must be removed now before clearing the
392 * struct se_dev_entry pointers below as logic in
393 * core_alua_do_transition_tg_pt() depends on these being present.
395 * deve->se_lun_acl will be NULL for demo-mode created LUNs
396 * that have not been explicitly converted to MappedLUNs ->
397 * struct se_lun_acl, but we remove deve->alua_port_list from
398 * port->sep_alua_list. This also means that active UAs and
399 * NodeACL context specific PR metadata for demo-mode
400 * MappedLUN *deve will be released below..
402 spin_lock_bh(&port
->sep_alua_lock
);
403 list_del(&deve
->alua_port_list
);
404 spin_unlock_bh(&port
->sep_alua_lock
);
406 * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE
407 * PR operation to complete.
409 while (atomic_read(&deve
->pr_ref_count
) != 0)
412 spin_lock_irq(&nacl
->device_list_lock
);
414 * Disable struct se_dev_entry LUN ACL mapping
416 core_scsi3_ua_release_all(deve
);
418 deve
->se_lun_acl
= NULL
;
420 deve
->creation_time
= 0;
421 deve
->attach_count
--;
422 spin_unlock_irq(&nacl
->device_list_lock
);
424 core_scsi3_free_pr_reg_from_nacl(lun
->lun_se_dev
, nacl
);
428 /* core_clear_lun_from_tpg():
432 void core_clear_lun_from_tpg(struct se_lun
*lun
, struct se_portal_group
*tpg
)
434 struct se_node_acl
*nacl
;
435 struct se_dev_entry
*deve
;
438 spin_lock_irq(&tpg
->acl_node_lock
);
439 list_for_each_entry(nacl
, &tpg
->acl_node_list
, acl_list
) {
440 spin_unlock_irq(&tpg
->acl_node_lock
);
442 spin_lock_irq(&nacl
->device_list_lock
);
443 for (i
= 0; i
< TRANSPORT_MAX_LUNS_PER_TPG
; i
++) {
444 deve
= nacl
->device_list
[i
];
445 if (lun
!= deve
->se_lun
)
447 spin_unlock_irq(&nacl
->device_list_lock
);
449 core_disable_device_list_for_node(lun
, NULL
,
450 deve
->mapped_lun
, TRANSPORT_LUNFLAGS_NO_ACCESS
,
453 spin_lock_irq(&nacl
->device_list_lock
);
455 spin_unlock_irq(&nacl
->device_list_lock
);
457 spin_lock_irq(&tpg
->acl_node_lock
);
459 spin_unlock_irq(&tpg
->acl_node_lock
);
462 static struct se_port
*core_alloc_port(struct se_device
*dev
)
464 struct se_port
*port
, *port_tmp
;
466 port
= kzalloc(sizeof(struct se_port
), GFP_KERNEL
);
468 pr_err("Unable to allocate struct se_port\n");
469 return ERR_PTR(-ENOMEM
);
471 INIT_LIST_HEAD(&port
->sep_alua_list
);
472 INIT_LIST_HEAD(&port
->sep_list
);
473 atomic_set(&port
->sep_tg_pt_secondary_offline
, 0);
474 spin_lock_init(&port
->sep_alua_lock
);
475 mutex_init(&port
->sep_tg_pt_md_mutex
);
477 spin_lock(&dev
->se_port_lock
);
478 if (dev
->dev_port_count
== 0x0000ffff) {
479 pr_warn("Reached dev->dev_port_count =="
481 spin_unlock(&dev
->se_port_lock
);
482 return ERR_PTR(-ENOSPC
);
486 * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device
487 * Here is the table from spc4r17 section 7.7.3.8.
489 * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field
493 * 1h Relative port 1, historically known as port A
494 * 2h Relative port 2, historically known as port B
495 * 3h to FFFFh Relative port 3 through 65 535
497 port
->sep_rtpi
= dev
->dev_rpti_counter
++;
501 list_for_each_entry(port_tmp
, &dev
->dev_sep_list
, sep_list
) {
503 * Make sure RELATIVE TARGET PORT IDENTIFIER is unique
506 if (port
->sep_rtpi
== port_tmp
->sep_rtpi
)
509 spin_unlock(&dev
->se_port_lock
);
514 static void core_export_port(
515 struct se_device
*dev
,
516 struct se_portal_group
*tpg
,
517 struct se_port
*port
,
520 struct t10_alua_tg_pt_gp_member
*tg_pt_gp_mem
= NULL
;
522 spin_lock(&dev
->se_port_lock
);
523 spin_lock(&lun
->lun_sep_lock
);
527 spin_unlock(&lun
->lun_sep_lock
);
529 list_add_tail(&port
->sep_list
, &dev
->dev_sep_list
);
530 spin_unlock(&dev
->se_port_lock
);
532 if (dev
->transport
->transport_type
!= TRANSPORT_PLUGIN_PHBA_PDEV
&&
533 !(dev
->se_hba
->hba_flags
& HBA_FLAGS_INTERNAL_USE
)) {
534 tg_pt_gp_mem
= core_alua_allocate_tg_pt_gp_mem(port
);
535 if (IS_ERR(tg_pt_gp_mem
) || !tg_pt_gp_mem
) {
536 pr_err("Unable to allocate t10_alua_tg_pt"
540 spin_lock(&tg_pt_gp_mem
->tg_pt_gp_mem_lock
);
541 __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem
,
542 dev
->t10_alua
.default_tg_pt_gp
);
543 spin_unlock(&tg_pt_gp_mem
->tg_pt_gp_mem_lock
);
544 pr_debug("%s/%s: Adding to default ALUA Target Port"
545 " Group: alua/default_tg_pt_gp\n",
546 dev
->transport
->name
, tpg
->se_tpg_tfo
->get_fabric_name());
549 dev
->dev_port_count
++;
550 port
->sep_index
= port
->sep_rtpi
; /* RELATIVE TARGET PORT IDENTIFIER */
554 * Called with struct se_device->se_port_lock spinlock held.
556 static void core_release_port(struct se_device
*dev
, struct se_port
*port
)
557 __releases(&dev
->se_port_lock
) __acquires(&dev
->se_port_lock
)
560 * Wait for any port reference for PR ALL_TG_PT=1 operation
561 * to complete in __core_scsi3_alloc_registration()
563 spin_unlock(&dev
->se_port_lock
);
564 if (atomic_read(&port
->sep_tg_pt_ref_cnt
))
566 spin_lock(&dev
->se_port_lock
);
568 core_alua_free_tg_pt_gp_mem(port
);
570 list_del(&port
->sep_list
);
571 dev
->dev_port_count
--;
576 struct se_device
*dev
,
577 struct se_portal_group
*tpg
,
580 struct se_hba
*hba
= dev
->se_hba
;
581 struct se_port
*port
;
583 port
= core_alloc_port(dev
);
585 return PTR_ERR(port
);
587 lun
->lun_se_dev
= dev
;
589 spin_lock(&hba
->device_lock
);
591 spin_unlock(&hba
->device_lock
);
593 core_export_port(dev
, tpg
, port
, lun
);
597 void core_dev_unexport(
598 struct se_device
*dev
,
599 struct se_portal_group
*tpg
,
602 struct se_hba
*hba
= dev
->se_hba
;
603 struct se_port
*port
= lun
->lun_sep
;
605 spin_lock(&lun
->lun_sep_lock
);
606 if (lun
->lun_se_dev
== NULL
) {
607 spin_unlock(&lun
->lun_sep_lock
);
610 spin_unlock(&lun
->lun_sep_lock
);
612 spin_lock(&dev
->se_port_lock
);
613 core_release_port(dev
, port
);
614 spin_unlock(&dev
->se_port_lock
);
616 spin_lock(&hba
->device_lock
);
618 spin_unlock(&hba
->device_lock
);
620 lun
->lun_se_dev
= NULL
;
623 static void se_release_vpd_for_dev(struct se_device
*dev
)
625 struct t10_vpd
*vpd
, *vpd_tmp
;
627 spin_lock(&dev
->t10_wwn
.t10_vpd_lock
);
628 list_for_each_entry_safe(vpd
, vpd_tmp
,
629 &dev
->t10_wwn
.t10_vpd_list
, vpd_list
) {
630 list_del(&vpd
->vpd_list
);
633 spin_unlock(&dev
->t10_wwn
.t10_vpd_lock
);
636 static u32
se_dev_align_max_sectors(u32 max_sectors
, u32 block_size
)
638 u32 aligned_max_sectors
;
641 * Limit max_sectors to a PAGE_SIZE aligned value for modern
642 * transport_allocate_data_tasks() operation.
644 alignment
= max(1ul, PAGE_SIZE
/ block_size
);
645 aligned_max_sectors
= rounddown(max_sectors
, alignment
);
647 if (max_sectors
!= aligned_max_sectors
)
648 pr_info("Rounding down aligned max_sectors from %u to %u\n",
649 max_sectors
, aligned_max_sectors
);
651 return aligned_max_sectors
;
654 int se_dev_set_max_unmap_lba_count(
655 struct se_device
*dev
,
656 u32 max_unmap_lba_count
)
658 dev
->dev_attrib
.max_unmap_lba_count
= max_unmap_lba_count
;
659 pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n",
660 dev
, dev
->dev_attrib
.max_unmap_lba_count
);
664 int se_dev_set_max_unmap_block_desc_count(
665 struct se_device
*dev
,
666 u32 max_unmap_block_desc_count
)
668 dev
->dev_attrib
.max_unmap_block_desc_count
=
669 max_unmap_block_desc_count
;
670 pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n",
671 dev
, dev
->dev_attrib
.max_unmap_block_desc_count
);
675 int se_dev_set_unmap_granularity(
676 struct se_device
*dev
,
677 u32 unmap_granularity
)
679 dev
->dev_attrib
.unmap_granularity
= unmap_granularity
;
680 pr_debug("dev[%p]: Set unmap_granularity: %u\n",
681 dev
, dev
->dev_attrib
.unmap_granularity
);
685 int se_dev_set_unmap_granularity_alignment(
686 struct se_device
*dev
,
687 u32 unmap_granularity_alignment
)
689 dev
->dev_attrib
.unmap_granularity_alignment
= unmap_granularity_alignment
;
690 pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n",
691 dev
, dev
->dev_attrib
.unmap_granularity_alignment
);
695 int se_dev_set_max_write_same_len(
696 struct se_device
*dev
,
697 u32 max_write_same_len
)
699 dev
->dev_attrib
.max_write_same_len
= max_write_same_len
;
700 pr_debug("dev[%p]: Set max_write_same_len: %u\n",
701 dev
, dev
->dev_attrib
.max_write_same_len
);
705 static void dev_set_t10_wwn_model_alias(struct se_device
*dev
)
707 const char *configname
;
709 configname
= config_item_name(&dev
->dev_group
.cg_item
);
710 if (strlen(configname
) >= 16) {
711 pr_warn("dev[%p]: Backstore name '%s' is too long for "
712 "INQUIRY_MODEL, truncating to 16 bytes\n", dev
,
715 snprintf(&dev
->t10_wwn
.model
[0], 16, "%s", configname
);
718 int se_dev_set_emulate_model_alias(struct se_device
*dev
, int flag
)
720 if (dev
->export_count
) {
721 pr_err("dev[%p]: Unable to change model alias"
722 " while export_count is %d\n",
723 dev
, dev
->export_count
);
727 if (flag
!= 0 && flag
!= 1) {
728 pr_err("Illegal value %d\n", flag
);
733 dev_set_t10_wwn_model_alias(dev
);
735 strncpy(&dev
->t10_wwn
.model
[0],
736 dev
->transport
->inquiry_prod
, 16);
738 dev
->dev_attrib
.emulate_model_alias
= flag
;
743 int se_dev_set_emulate_dpo(struct se_device
*dev
, int flag
)
745 if (flag
!= 0 && flag
!= 1) {
746 pr_err("Illegal value %d\n", flag
);
751 pr_err("dpo_emulated not supported\n");
758 int se_dev_set_emulate_fua_write(struct se_device
*dev
, int flag
)
760 if (flag
!= 0 && flag
!= 1) {
761 pr_err("Illegal value %d\n", flag
);
766 dev
->transport
->transport_type
== TRANSPORT_PLUGIN_PHBA_PDEV
) {
767 pr_err("emulate_fua_write not supported for pSCSI\n");
770 dev
->dev_attrib
.emulate_fua_write
= flag
;
771 pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n",
772 dev
, dev
->dev_attrib
.emulate_fua_write
);
776 int se_dev_set_emulate_fua_read(struct se_device
*dev
, int flag
)
778 if (flag
!= 0 && flag
!= 1) {
779 pr_err("Illegal value %d\n", flag
);
784 pr_err("ua read emulated not supported\n");
791 int se_dev_set_emulate_write_cache(struct se_device
*dev
, int flag
)
793 if (flag
!= 0 && flag
!= 1) {
794 pr_err("Illegal value %d\n", flag
);
798 dev
->transport
->transport_type
== TRANSPORT_PLUGIN_PHBA_PDEV
) {
799 pr_err("emulate_write_cache not supported for pSCSI\n");
802 if (dev
->transport
->get_write_cache
) {
803 pr_warn("emulate_write_cache cannot be changed when underlying"
804 " HW reports WriteCacheEnabled, ignoring request\n");
808 dev
->dev_attrib
.emulate_write_cache
= flag
;
809 pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n",
810 dev
, dev
->dev_attrib
.emulate_write_cache
);
814 int se_dev_set_emulate_ua_intlck_ctrl(struct se_device
*dev
, int flag
)
816 if ((flag
!= 0) && (flag
!= 1) && (flag
!= 2)) {
817 pr_err("Illegal value %d\n", flag
);
821 if (dev
->export_count
) {
822 pr_err("dev[%p]: Unable to change SE Device"
823 " UA_INTRLCK_CTRL while export_count is %d\n",
824 dev
, dev
->export_count
);
827 dev
->dev_attrib
.emulate_ua_intlck_ctrl
= flag
;
828 pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n",
829 dev
, dev
->dev_attrib
.emulate_ua_intlck_ctrl
);
834 int se_dev_set_emulate_tas(struct se_device
*dev
, int flag
)
836 if ((flag
!= 0) && (flag
!= 1)) {
837 pr_err("Illegal value %d\n", flag
);
841 if (dev
->export_count
) {
842 pr_err("dev[%p]: Unable to change SE Device TAS while"
843 " export_count is %d\n",
844 dev
, dev
->export_count
);
847 dev
->dev_attrib
.emulate_tas
= flag
;
848 pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n",
849 dev
, (dev
->dev_attrib
.emulate_tas
) ? "Enabled" : "Disabled");
854 int se_dev_set_emulate_tpu(struct se_device
*dev
, int flag
)
856 if ((flag
!= 0) && (flag
!= 1)) {
857 pr_err("Illegal value %d\n", flag
);
861 * We expect this value to be non-zero when generic Block Layer
862 * Discard supported is detected iblock_create_virtdevice().
864 if (flag
&& !dev
->dev_attrib
.max_unmap_block_desc_count
) {
865 pr_err("Generic Block Discard not supported\n");
869 dev
->dev_attrib
.emulate_tpu
= flag
;
870 pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n",
875 int se_dev_set_emulate_tpws(struct se_device
*dev
, int flag
)
877 if ((flag
!= 0) && (flag
!= 1)) {
878 pr_err("Illegal value %d\n", flag
);
882 * We expect this value to be non-zero when generic Block Layer
883 * Discard supported is detected iblock_create_virtdevice().
885 if (flag
&& !dev
->dev_attrib
.max_unmap_block_desc_count
) {
886 pr_err("Generic Block Discard not supported\n");
890 dev
->dev_attrib
.emulate_tpws
= flag
;
891 pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n",
896 int se_dev_set_emulate_caw(struct se_device
*dev
, int flag
)
898 if (flag
!= 0 && flag
!= 1) {
899 pr_err("Illegal value %d\n", flag
);
902 dev
->dev_attrib
.emulate_caw
= flag
;
903 pr_debug("dev[%p]: SE Device CompareAndWrite (AtomicTestandSet): %d\n",
909 int se_dev_set_emulate_3pc(struct se_device
*dev
, int flag
)
911 if (flag
!= 0 && flag
!= 1) {
912 pr_err("Illegal value %d\n", flag
);
915 dev
->dev_attrib
.emulate_3pc
= flag
;
916 pr_debug("dev[%p]: SE Device 3rd Party Copy (EXTENDED_COPY): %d\n",
922 int se_dev_set_enforce_pr_isids(struct se_device
*dev
, int flag
)
924 if ((flag
!= 0) && (flag
!= 1)) {
925 pr_err("Illegal value %d\n", flag
);
928 dev
->dev_attrib
.enforce_pr_isids
= flag
;
929 pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev
,
930 (dev
->dev_attrib
.enforce_pr_isids
) ? "Enabled" : "Disabled");
934 int se_dev_set_is_nonrot(struct se_device
*dev
, int flag
)
936 if ((flag
!= 0) && (flag
!= 1)) {
937 printk(KERN_ERR
"Illegal value %d\n", flag
);
940 dev
->dev_attrib
.is_nonrot
= flag
;
941 pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n",
946 int se_dev_set_emulate_rest_reord(struct se_device
*dev
, int flag
)
949 printk(KERN_ERR
"dev[%p]: SE Device emulatation of restricted"
950 " reordering not implemented\n", dev
);
953 dev
->dev_attrib
.emulate_rest_reord
= flag
;
954 pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev
, flag
);
959 * Note, this can only be called on unexported SE Device Object.
961 int se_dev_set_queue_depth(struct se_device
*dev
, u32 queue_depth
)
963 if (dev
->export_count
) {
964 pr_err("dev[%p]: Unable to change SE Device TCQ while"
965 " export_count is %d\n",
966 dev
, dev
->export_count
);
970 pr_err("dev[%p]: Illegal ZERO value for queue"
975 if (dev
->transport
->transport_type
== TRANSPORT_PLUGIN_PHBA_PDEV
) {
976 if (queue_depth
> dev
->dev_attrib
.hw_queue_depth
) {
977 pr_err("dev[%p]: Passed queue_depth: %u"
978 " exceeds TCM/SE_Device TCQ: %u\n",
980 dev
->dev_attrib
.hw_queue_depth
);
984 if (queue_depth
> dev
->dev_attrib
.queue_depth
) {
985 if (queue_depth
> dev
->dev_attrib
.hw_queue_depth
) {
986 pr_err("dev[%p]: Passed queue_depth:"
987 " %u exceeds TCM/SE_Device MAX"
988 " TCQ: %u\n", dev
, queue_depth
,
989 dev
->dev_attrib
.hw_queue_depth
);
995 dev
->dev_attrib
.queue_depth
= dev
->queue_depth
= queue_depth
;
996 pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n",
1001 int se_dev_set_fabric_max_sectors(struct se_device
*dev
, u32 fabric_max_sectors
)
1003 int block_size
= dev
->dev_attrib
.block_size
;
1005 if (dev
->export_count
) {
1006 pr_err("dev[%p]: Unable to change SE Device"
1007 " fabric_max_sectors while export_count is %d\n",
1008 dev
, dev
->export_count
);
1011 if (!fabric_max_sectors
) {
1012 pr_err("dev[%p]: Illegal ZERO value for"
1013 " fabric_max_sectors\n", dev
);
1016 if (fabric_max_sectors
< DA_STATUS_MAX_SECTORS_MIN
) {
1017 pr_err("dev[%p]: Passed fabric_max_sectors: %u less than"
1018 " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev
, fabric_max_sectors
,
1019 DA_STATUS_MAX_SECTORS_MIN
);
1022 if (dev
->transport
->transport_type
== TRANSPORT_PLUGIN_PHBA_PDEV
) {
1023 if (fabric_max_sectors
> dev
->dev_attrib
.hw_max_sectors
) {
1024 pr_err("dev[%p]: Passed fabric_max_sectors: %u"
1025 " greater than TCM/SE_Device max_sectors:"
1026 " %u\n", dev
, fabric_max_sectors
,
1027 dev
->dev_attrib
.hw_max_sectors
);
1031 if (fabric_max_sectors
> DA_STATUS_MAX_SECTORS_MAX
) {
1032 pr_err("dev[%p]: Passed fabric_max_sectors: %u"
1033 " greater than DA_STATUS_MAX_SECTORS_MAX:"
1034 " %u\n", dev
, fabric_max_sectors
,
1035 DA_STATUS_MAX_SECTORS_MAX
);
1040 * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks()
1044 pr_warn("Defaulting to 512 for zero block_size\n");
1046 fabric_max_sectors
= se_dev_align_max_sectors(fabric_max_sectors
,
1049 dev
->dev_attrib
.fabric_max_sectors
= fabric_max_sectors
;
1050 pr_debug("dev[%p]: SE Device max_sectors changed to %u\n",
1051 dev
, fabric_max_sectors
);
1055 int se_dev_set_optimal_sectors(struct se_device
*dev
, u32 optimal_sectors
)
1057 if (dev
->export_count
) {
1058 pr_err("dev[%p]: Unable to change SE Device"
1059 " optimal_sectors while export_count is %d\n",
1060 dev
, dev
->export_count
);
1063 if (dev
->transport
->transport_type
== TRANSPORT_PLUGIN_PHBA_PDEV
) {
1064 pr_err("dev[%p]: Passed optimal_sectors cannot be"
1065 " changed for TCM/pSCSI\n", dev
);
1068 if (optimal_sectors
> dev
->dev_attrib
.fabric_max_sectors
) {
1069 pr_err("dev[%p]: Passed optimal_sectors %u cannot be"
1070 " greater than fabric_max_sectors: %u\n", dev
,
1071 optimal_sectors
, dev
->dev_attrib
.fabric_max_sectors
);
1075 dev
->dev_attrib
.optimal_sectors
= optimal_sectors
;
1076 pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n",
1077 dev
, optimal_sectors
);
1081 int se_dev_set_block_size(struct se_device
*dev
, u32 block_size
)
1083 if (dev
->export_count
) {
1084 pr_err("dev[%p]: Unable to change SE Device block_size"
1085 " while export_count is %d\n",
1086 dev
, dev
->export_count
);
1090 if ((block_size
!= 512) &&
1091 (block_size
!= 1024) &&
1092 (block_size
!= 2048) &&
1093 (block_size
!= 4096)) {
1094 pr_err("dev[%p]: Illegal value for block_device: %u"
1095 " for SE device, must be 512, 1024, 2048 or 4096\n",
1100 if (dev
->transport
->transport_type
== TRANSPORT_PLUGIN_PHBA_PDEV
) {
1101 pr_err("dev[%p]: Not allowed to change block_size for"
1102 " Physical Device, use for Linux/SCSI to change"
1103 " block_size for underlying hardware\n", dev
);
1107 dev
->dev_attrib
.block_size
= block_size
;
1108 pr_debug("dev[%p]: SE Device block_size changed to %u\n",
1113 struct se_lun
*core_dev_add_lun(
1114 struct se_portal_group
*tpg
,
1115 struct se_device
*dev
,
1118 struct se_lun
*lun_p
;
1121 lun_p
= core_tpg_pre_addlun(tpg
, lun
);
1125 rc
= core_tpg_post_addlun(tpg
, lun_p
,
1126 TRANSPORT_LUNFLAGS_READ_WRITE
, dev
);
1130 pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from"
1131 " CORE HBA: %u\n", tpg
->se_tpg_tfo
->get_fabric_name(),
1132 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
), lun_p
->unpacked_lun
,
1133 tpg
->se_tpg_tfo
->get_fabric_name(), dev
->se_hba
->hba_id
);
1135 * Update LUN maps for dynamically added initiators when
1136 * generate_node_acl is enabled.
1138 if (tpg
->se_tpg_tfo
->tpg_check_demo_mode(tpg
)) {
1139 struct se_node_acl
*acl
;
1140 spin_lock_irq(&tpg
->acl_node_lock
);
1141 list_for_each_entry(acl
, &tpg
->acl_node_list
, acl_list
) {
1142 if (acl
->dynamic_node_acl
&&
1143 (!tpg
->se_tpg_tfo
->tpg_check_demo_mode_login_only
||
1144 !tpg
->se_tpg_tfo
->tpg_check_demo_mode_login_only(tpg
))) {
1145 spin_unlock_irq(&tpg
->acl_node_lock
);
1146 core_tpg_add_node_to_devs(acl
, tpg
);
1147 spin_lock_irq(&tpg
->acl_node_lock
);
1150 spin_unlock_irq(&tpg
->acl_node_lock
);
1156 /* core_dev_del_lun():
1160 int core_dev_del_lun(
1161 struct se_portal_group
*tpg
,
1166 lun
= core_tpg_pre_dellun(tpg
, unpacked_lun
);
1168 return PTR_ERR(lun
);
1170 core_tpg_post_dellun(tpg
, lun
);
1172 pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from"
1173 " device object\n", tpg
->se_tpg_tfo
->get_fabric_name(),
1174 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
), unpacked_lun
,
1175 tpg
->se_tpg_tfo
->get_fabric_name());
1180 struct se_lun
*core_get_lun_from_tpg(struct se_portal_group
*tpg
, u32 unpacked_lun
)
1184 spin_lock(&tpg
->tpg_lun_lock
);
1185 if (unpacked_lun
> (TRANSPORT_MAX_LUNS_PER_TPG
-1)) {
1186 pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS"
1187 "_PER_TPG-1: %u for Target Portal Group: %hu\n",
1188 tpg
->se_tpg_tfo
->get_fabric_name(), unpacked_lun
,
1189 TRANSPORT_MAX_LUNS_PER_TPG
-1,
1190 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
));
1191 spin_unlock(&tpg
->tpg_lun_lock
);
1194 lun
= tpg
->tpg_lun_list
[unpacked_lun
];
1196 if (lun
->lun_status
!= TRANSPORT_LUN_STATUS_FREE
) {
1197 pr_err("%s Logical Unit Number: %u is not free on"
1198 " Target Portal Group: %hu, ignoring request.\n",
1199 tpg
->se_tpg_tfo
->get_fabric_name(), unpacked_lun
,
1200 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
));
1201 spin_unlock(&tpg
->tpg_lun_lock
);
1204 spin_unlock(&tpg
->tpg_lun_lock
);
1209 /* core_dev_get_lun():
1213 static struct se_lun
*core_dev_get_lun(struct se_portal_group
*tpg
, u32 unpacked_lun
)
1217 spin_lock(&tpg
->tpg_lun_lock
);
1218 if (unpacked_lun
> (TRANSPORT_MAX_LUNS_PER_TPG
-1)) {
1219 pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER"
1220 "_TPG-1: %u for Target Portal Group: %hu\n",
1221 tpg
->se_tpg_tfo
->get_fabric_name(), unpacked_lun
,
1222 TRANSPORT_MAX_LUNS_PER_TPG
-1,
1223 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
));
1224 spin_unlock(&tpg
->tpg_lun_lock
);
1227 lun
= tpg
->tpg_lun_list
[unpacked_lun
];
1229 if (lun
->lun_status
!= TRANSPORT_LUN_STATUS_ACTIVE
) {
1230 pr_err("%s Logical Unit Number: %u is not active on"
1231 " Target Portal Group: %hu, ignoring request.\n",
1232 tpg
->se_tpg_tfo
->get_fabric_name(), unpacked_lun
,
1233 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
));
1234 spin_unlock(&tpg
->tpg_lun_lock
);
1237 spin_unlock(&tpg
->tpg_lun_lock
);
1242 struct se_lun_acl
*core_dev_init_initiator_node_lun_acl(
1243 struct se_portal_group
*tpg
,
1244 struct se_node_acl
*nacl
,
1248 struct se_lun_acl
*lacl
;
1250 if (strlen(nacl
->initiatorname
) >= TRANSPORT_IQN_LEN
) {
1251 pr_err("%s InitiatorName exceeds maximum size.\n",
1252 tpg
->se_tpg_tfo
->get_fabric_name());
1256 lacl
= kzalloc(sizeof(struct se_lun_acl
), GFP_KERNEL
);
1258 pr_err("Unable to allocate memory for struct se_lun_acl.\n");
1263 INIT_LIST_HEAD(&lacl
->lacl_list
);
1264 lacl
->mapped_lun
= mapped_lun
;
1265 lacl
->se_lun_nacl
= nacl
;
1266 snprintf(lacl
->initiatorname
, TRANSPORT_IQN_LEN
, "%s",
1267 nacl
->initiatorname
);
1272 int core_dev_add_initiator_node_lun_acl(
1273 struct se_portal_group
*tpg
,
1274 struct se_lun_acl
*lacl
,
1279 struct se_node_acl
*nacl
;
1281 lun
= core_dev_get_lun(tpg
, unpacked_lun
);
1283 pr_err("%s Logical Unit Number: %u is not active on"
1284 " Target Portal Group: %hu, ignoring request.\n",
1285 tpg
->se_tpg_tfo
->get_fabric_name(), unpacked_lun
,
1286 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
));
1290 nacl
= lacl
->se_lun_nacl
;
1294 if ((lun
->lun_access
& TRANSPORT_LUNFLAGS_READ_ONLY
) &&
1295 (lun_access
& TRANSPORT_LUNFLAGS_READ_WRITE
))
1296 lun_access
= TRANSPORT_LUNFLAGS_READ_ONLY
;
1300 if (core_enable_device_list_for_node(lun
, lacl
, lacl
->mapped_lun
,
1301 lun_access
, nacl
, tpg
) < 0)
1304 spin_lock(&lun
->lun_acl_lock
);
1305 list_add_tail(&lacl
->lacl_list
, &lun
->lun_acl_list
);
1306 atomic_inc(&lun
->lun_acl_count
);
1307 smp_mb__after_atomic_inc();
1308 spin_unlock(&lun
->lun_acl_lock
);
1310 pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for "
1311 " InitiatorNode: %s\n", tpg
->se_tpg_tfo
->get_fabric_name(),
1312 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
), unpacked_lun
, lacl
->mapped_lun
,
1313 (lun_access
& TRANSPORT_LUNFLAGS_READ_WRITE
) ? "RW" : "RO",
1314 lacl
->initiatorname
);
1316 * Check to see if there are any existing persistent reservation APTPL
1317 * pre-registrations that need to be enabled for this LUN ACL..
1319 core_scsi3_check_aptpl_registration(lun
->lun_se_dev
, tpg
, lun
, lacl
);
1323 /* core_dev_del_initiator_node_lun_acl():
1327 int core_dev_del_initiator_node_lun_acl(
1328 struct se_portal_group
*tpg
,
1330 struct se_lun_acl
*lacl
)
1332 struct se_node_acl
*nacl
;
1334 nacl
= lacl
->se_lun_nacl
;
1338 spin_lock(&lun
->lun_acl_lock
);
1339 list_del(&lacl
->lacl_list
);
1340 atomic_dec(&lun
->lun_acl_count
);
1341 smp_mb__after_atomic_dec();
1342 spin_unlock(&lun
->lun_acl_lock
);
1344 core_disable_device_list_for_node(lun
, NULL
, lacl
->mapped_lun
,
1345 TRANSPORT_LUNFLAGS_NO_ACCESS
, nacl
, tpg
);
1347 lacl
->se_lun
= NULL
;
1349 pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for"
1350 " InitiatorNode: %s Mapped LUN: %u\n",
1351 tpg
->se_tpg_tfo
->get_fabric_name(),
1352 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
), lun
->unpacked_lun
,
1353 lacl
->initiatorname
, lacl
->mapped_lun
);
1358 void core_dev_free_initiator_node_lun_acl(
1359 struct se_portal_group
*tpg
,
1360 struct se_lun_acl
*lacl
)
1362 pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s"
1363 " Mapped LUN: %u\n", tpg
->se_tpg_tfo
->get_fabric_name(),
1364 tpg
->se_tpg_tfo
->tpg_get_tag(tpg
),
1365 tpg
->se_tpg_tfo
->get_fabric_name(),
1366 lacl
->initiatorname
, lacl
->mapped_lun
);
1371 static void scsi_dump_inquiry(struct se_device
*dev
)
1373 struct t10_wwn
*wwn
= &dev
->t10_wwn
;
1377 * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer
1379 for (i
= 0; i
< 8; i
++)
1380 if (wwn
->vendor
[i
] >= 0x20)
1381 buf
[i
] = wwn
->vendor
[i
];
1385 pr_debug(" Vendor: %s\n", buf
);
1387 for (i
= 0; i
< 16; i
++)
1388 if (wwn
->model
[i
] >= 0x20)
1389 buf
[i
] = wwn
->model
[i
];
1393 pr_debug(" Model: %s\n", buf
);
1395 for (i
= 0; i
< 4; i
++)
1396 if (wwn
->revision
[i
] >= 0x20)
1397 buf
[i
] = wwn
->revision
[i
];
1401 pr_debug(" Revision: %s\n", buf
);
1403 device_type
= dev
->transport
->get_device_type(dev
);
1404 pr_debug(" Type: %s ", scsi_device_type(device_type
));
1407 struct se_device
*target_alloc_device(struct se_hba
*hba
, const char *name
)
1409 struct se_device
*dev
;
1411 dev
= hba
->transport
->alloc_device(hba
, name
);
1415 dev
->dev_link_magic
= SE_DEV_LINK_MAGIC
;
1417 dev
->transport
= hba
->transport
;
1419 INIT_LIST_HEAD(&dev
->dev_list
);
1420 INIT_LIST_HEAD(&dev
->dev_sep_list
);
1421 INIT_LIST_HEAD(&dev
->dev_tmr_list
);
1422 INIT_LIST_HEAD(&dev
->delayed_cmd_list
);
1423 INIT_LIST_HEAD(&dev
->state_list
);
1424 INIT_LIST_HEAD(&dev
->qf_cmd_list
);
1425 INIT_LIST_HEAD(&dev
->g_dev_node
);
1426 spin_lock_init(&dev
->stats_lock
);
1427 spin_lock_init(&dev
->execute_task_lock
);
1428 spin_lock_init(&dev
->delayed_cmd_lock
);
1429 spin_lock_init(&dev
->dev_reservation_lock
);
1430 spin_lock_init(&dev
->se_port_lock
);
1431 spin_lock_init(&dev
->se_tmr_lock
);
1432 spin_lock_init(&dev
->qf_cmd_lock
);
1433 sema_init(&dev
->caw_sem
, 1);
1434 atomic_set(&dev
->dev_ordered_id
, 0);
1435 INIT_LIST_HEAD(&dev
->t10_wwn
.t10_vpd_list
);
1436 spin_lock_init(&dev
->t10_wwn
.t10_vpd_lock
);
1437 INIT_LIST_HEAD(&dev
->t10_pr
.registration_list
);
1438 INIT_LIST_HEAD(&dev
->t10_pr
.aptpl_reg_list
);
1439 spin_lock_init(&dev
->t10_pr
.registration_lock
);
1440 spin_lock_init(&dev
->t10_pr
.aptpl_reg_lock
);
1441 INIT_LIST_HEAD(&dev
->t10_alua
.tg_pt_gps_list
);
1442 spin_lock_init(&dev
->t10_alua
.tg_pt_gps_lock
);
1444 dev
->t10_wwn
.t10_dev
= dev
;
1445 dev
->t10_alua
.t10_dev
= dev
;
1447 dev
->dev_attrib
.da_dev
= dev
;
1448 dev
->dev_attrib
.emulate_model_alias
= DA_EMULATE_MODEL_ALIAS
;
1449 dev
->dev_attrib
.emulate_dpo
= DA_EMULATE_DPO
;
1450 dev
->dev_attrib
.emulate_fua_write
= DA_EMULATE_FUA_WRITE
;
1451 dev
->dev_attrib
.emulate_fua_read
= DA_EMULATE_FUA_READ
;
1452 dev
->dev_attrib
.emulate_write_cache
= DA_EMULATE_WRITE_CACHE
;
1453 dev
->dev_attrib
.emulate_ua_intlck_ctrl
= DA_EMULATE_UA_INTLLCK_CTRL
;
1454 dev
->dev_attrib
.emulate_tas
= DA_EMULATE_TAS
;
1455 dev
->dev_attrib
.emulate_tpu
= DA_EMULATE_TPU
;
1456 dev
->dev_attrib
.emulate_tpws
= DA_EMULATE_TPWS
;
1457 dev
->dev_attrib
.emulate_caw
= DA_EMULATE_CAW
;
1458 dev
->dev_attrib
.emulate_3pc
= DA_EMULATE_3PC
;
1459 dev
->dev_attrib
.enforce_pr_isids
= DA_ENFORCE_PR_ISIDS
;
1460 dev
->dev_attrib
.is_nonrot
= DA_IS_NONROT
;
1461 dev
->dev_attrib
.emulate_rest_reord
= DA_EMULATE_REST_REORD
;
1462 dev
->dev_attrib
.max_unmap_lba_count
= DA_MAX_UNMAP_LBA_COUNT
;
1463 dev
->dev_attrib
.max_unmap_block_desc_count
=
1464 DA_MAX_UNMAP_BLOCK_DESC_COUNT
;
1465 dev
->dev_attrib
.unmap_granularity
= DA_UNMAP_GRANULARITY_DEFAULT
;
1466 dev
->dev_attrib
.unmap_granularity_alignment
=
1467 DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT
;
1468 dev
->dev_attrib
.max_write_same_len
= DA_MAX_WRITE_SAME_LEN
;
1469 dev
->dev_attrib
.fabric_max_sectors
= DA_FABRIC_MAX_SECTORS
;
1470 dev
->dev_attrib
.optimal_sectors
= DA_FABRIC_MAX_SECTORS
;
1475 int target_configure_device(struct se_device
*dev
)
1477 struct se_hba
*hba
= dev
->se_hba
;
1480 if (dev
->dev_flags
& DF_CONFIGURED
) {
1481 pr_err("se_dev->se_dev_ptr already set for storage"
1486 ret
= dev
->transport
->configure_device(dev
);
1489 dev
->dev_flags
|= DF_CONFIGURED
;
1492 * XXX: there is not much point to have two different values here..
1494 dev
->dev_attrib
.block_size
= dev
->dev_attrib
.hw_block_size
;
1495 dev
->dev_attrib
.queue_depth
= dev
->dev_attrib
.hw_queue_depth
;
1498 * Align max_hw_sectors down to PAGE_SIZE I/O transfers
1500 dev
->dev_attrib
.hw_max_sectors
=
1501 se_dev_align_max_sectors(dev
->dev_attrib
.hw_max_sectors
,
1502 dev
->dev_attrib
.hw_block_size
);
1504 dev
->dev_index
= scsi_get_new_index(SCSI_DEVICE_INDEX
);
1505 dev
->creation_time
= get_jiffies_64();
1507 ret
= core_setup_alua(dev
);
1512 * Startup the struct se_device processing thread
1514 dev
->tmr_wq
= alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM
| WQ_UNBOUND
, 1,
1515 dev
->transport
->name
);
1517 pr_err("Unable to create tmr workqueue for %s\n",
1518 dev
->transport
->name
);
1524 * Setup work_queue for QUEUE_FULL
1526 INIT_WORK(&dev
->qf_work_queue
, target_qf_do_work
);
1529 * Preload the initial INQUIRY const values if we are doing
1530 * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI
1531 * passthrough because this is being provided by the backend LLD.
1533 if (dev
->transport
->transport_type
!= TRANSPORT_PLUGIN_PHBA_PDEV
) {
1534 strncpy(&dev
->t10_wwn
.vendor
[0], "LIO-ORG", 8);
1535 strncpy(&dev
->t10_wwn
.model
[0],
1536 dev
->transport
->inquiry_prod
, 16);
1537 strncpy(&dev
->t10_wwn
.revision
[0],
1538 dev
->transport
->inquiry_rev
, 4);
1541 scsi_dump_inquiry(dev
);
1543 spin_lock(&hba
->device_lock
);
1545 spin_unlock(&hba
->device_lock
);
1547 mutex_lock(&g_device_mutex
);
1548 list_add_tail(&dev
->g_dev_node
, &g_device_list
);
1549 mutex_unlock(&g_device_mutex
);
1554 core_alua_free_lu_gp_mem(dev
);
1556 se_release_vpd_for_dev(dev
);
1560 void target_free_device(struct se_device
*dev
)
1562 struct se_hba
*hba
= dev
->se_hba
;
1564 WARN_ON(!list_empty(&dev
->dev_sep_list
));
1566 if (dev
->dev_flags
& DF_CONFIGURED
) {
1567 destroy_workqueue(dev
->tmr_wq
);
1569 mutex_lock(&g_device_mutex
);
1570 list_del(&dev
->g_dev_node
);
1571 mutex_unlock(&g_device_mutex
);
1573 spin_lock(&hba
->device_lock
);
1575 spin_unlock(&hba
->device_lock
);
1578 core_alua_free_lu_gp_mem(dev
);
1579 core_scsi3_free_all_registrations(dev
);
1580 se_release_vpd_for_dev(dev
);
1582 dev
->transport
->free_device(dev
);
1585 int core_dev_setup_virtual_lun0(void)
1588 struct se_device
*dev
;
1589 char buf
[] = "rd_pages=8,rd_nullio=1";
1592 hba
= core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE
);
1594 return PTR_ERR(hba
);
1596 dev
= target_alloc_device(hba
, "virt_lun0");
1602 hba
->transport
->set_configfs_dev_params(dev
, buf
, sizeof(buf
));
1604 ret
= target_configure_device(dev
);
1606 goto out_free_se_dev
;
1613 target_free_device(dev
);
1615 core_delete_hba(hba
);
1620 void core_dev_release_virtual_lun0(void)
1622 struct se_hba
*hba
= lun0_hba
;
1628 target_free_device(g_lun0_dev
);
1629 core_delete_hba(hba
);