Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * Filename: target_core_device.c (based on iscsi_target_device.c) |
| 3 | * |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 4 | * This file contains the TCM Virtual Device and Disk Transport |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 5 | * agnostic related functions. |
| 6 | * |
Nicholas Bellinger | fd9a11d | 2012-11-09 14:51:48 -0800 | [diff] [blame^] | 7 | * (c) Copyright 2003-2012 RisingTide Systems LLC. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 8 | * |
| 9 | * Nicholas A. Bellinger <nab@kernel.org> |
| 10 | * |
| 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. |
| 15 | * |
| 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. |
| 20 | * |
| 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. |
| 24 | * |
| 25 | ******************************************************************************/ |
| 26 | |
| 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> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 33 | #include <linux/kthread.h> |
| 34 | #include <linux/in.h> |
Paul Gortmaker | c53181a | 2011-08-30 18:16:43 -0400 | [diff] [blame] | 35 | #include <linux/export.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 36 | #include <net/sock.h> |
| 37 | #include <net/tcp.h> |
| 38 | #include <scsi/scsi.h> |
Nicholas Bellinger | 1078da1 | 2011-05-19 20:19:13 -0700 | [diff] [blame] | 39 | #include <scsi/scsi_device.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 40 | |
| 41 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 42 | #include <target/target_core_backend.h> |
| 43 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 44 | |
Christoph Hellwig | e26d99a | 2011-11-14 12:30:30 -0500 | [diff] [blame] | 45 | #include "target_core_internal.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 46 | #include "target_core_alua.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 47 | #include "target_core_pr.h" |
| 48 | #include "target_core_ua.h" |
| 49 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 50 | static struct se_hba *lun0_hba; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 51 | /* not static, needed by tpg.c */ |
| 52 | struct se_device *g_lun0_dev; |
| 53 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 54 | sense_reason_t |
| 55 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 56 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 57 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 58 | struct se_session *se_sess = se_cmd->se_sess; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 59 | struct se_device *dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 60 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 61 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 62 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
| 63 | return TCM_NON_EXISTENT_LUN; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 64 | |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 65 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 66 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 67 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
| 68 | struct se_dev_entry *deve = se_cmd->se_deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 69 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 70 | deve->total_cmds++; |
| 71 | deve->total_bytes += se_cmd->data_length; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 72 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 73 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && |
| 74 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 75 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 76 | " Access for 0x%08x\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 77 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 78 | unpacked_lun); |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 79 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 80 | return TCM_WRITE_PROTECTED; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 81 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 82 | |
| 83 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
| 84 | deve->write_bytes += se_cmd->data_length; |
| 85 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
| 86 | deve->read_bytes += se_cmd->data_length; |
| 87 | |
| 88 | deve->deve_cmds++; |
| 89 | |
| 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; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 94 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
| 95 | } |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 96 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 97 | |
| 98 | if (!se_lun) { |
| 99 | /* |
| 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. |
| 103 | */ |
| 104 | if (unpacked_lun != 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 105 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 106 | " Access for 0x%08x\n", |
| 107 | se_cmd->se_tfo->get_fabric_name(), |
| 108 | unpacked_lun); |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 109 | return TCM_NON_EXISTENT_LUN; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 110 | } |
| 111 | /* |
| 112 | * Force WRITE PROTECT for virtual LUN 0 |
| 113 | */ |
| 114 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 115 | (se_cmd->data_direction != DMA_NONE)) |
| 116 | return TCM_WRITE_PROTECTED; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 117 | |
| 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; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 121 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 122 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 123 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 124 | /* Directly associate cmd with se_dev */ |
| 125 | se_cmd->se_dev = se_lun->lun_se_dev; |
| 126 | |
| 127 | /* TODO: get rid of this and use atomics for stats */ |
| 128 | dev = se_lun->lun_se_dev; |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 129 | spin_lock_irqsave(&dev->stats_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 130 | dev->num_cmds++; |
| 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; |
Roland Dreier | 78faae3 | 2011-07-20 09:09:10 +0000 | [diff] [blame] | 135 | spin_unlock_irqrestore(&dev->stats_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 136 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 137 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 138 | list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 139 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); |
| 140 | |
| 141 | return 0; |
| 142 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 143 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 144 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 145 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 146 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 147 | struct se_dev_entry *deve; |
| 148 | struct se_lun *se_lun = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 149 | struct se_session *se_sess = se_cmd->se_sess; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 150 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 151 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 152 | |
Christoph Hellwig | de103c9 | 2012-11-06 12:24:09 -0800 | [diff] [blame] | 153 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 154 | return -ENODEV; |
Fubo Chen | d814495 | 2011-02-13 15:13:42 -0800 | [diff] [blame] | 155 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 156 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 157 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 158 | deve = se_cmd->se_deve; |
| 159 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 160 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 161 | se_tmr->tmr_lun = deve->se_lun; |
| 162 | se_cmd->se_lun = deve->se_lun; |
| 163 | se_lun = deve->se_lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 164 | se_cmd->pr_res_key = deve->pr_res_key; |
| 165 | se_cmd->orig_fe_lun = unpacked_lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 166 | } |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 167 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 168 | |
| 169 | if (!se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 170 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 171 | " Access for 0x%08x\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 172 | se_cmd->se_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 173 | unpacked_lun); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 174 | return -ENODEV; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 175 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 176 | |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 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; |
| 180 | |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 181 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 182 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
Roland Dreier | 5e1be91 | 2011-07-20 09:28:56 +0000 | [diff] [blame] | 183 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 184 | |
| 185 | return 0; |
| 186 | } |
Andy Grover | 5951146d | 2011-07-19 10:26:37 +0000 | [diff] [blame] | 187 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 188 | |
| 189 | /* |
| 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. |
| 193 | */ |
| 194 | struct se_dev_entry *core_get_se_deve_from_rtpi( |
| 195 | struct se_node_acl *nacl, |
| 196 | u16 rtpi) |
| 197 | { |
| 198 | struct se_dev_entry *deve; |
| 199 | struct se_lun *lun; |
| 200 | struct se_port *port; |
| 201 | struct se_portal_group *tpg = nacl->se_tpg; |
| 202 | u32 i; |
| 203 | |
| 204 | spin_lock_irq(&nacl->device_list_lock); |
| 205 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 206 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 207 | |
| 208 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 209 | continue; |
| 210 | |
| 211 | lun = deve->se_lun; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 212 | if (!lun) { |
| 213 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 214 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 215 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 216 | continue; |
| 217 | } |
| 218 | port = lun->lun_sep; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 219 | if (!port) { |
| 220 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 221 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 222 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 223 | continue; |
| 224 | } |
| 225 | if (port->sep_rtpi != rtpi) |
| 226 | continue; |
| 227 | |
| 228 | atomic_inc(&deve->pr_ref_count); |
| 229 | smp_mb__after_atomic_inc(); |
| 230 | spin_unlock_irq(&nacl->device_list_lock); |
| 231 | |
| 232 | return deve; |
| 233 | } |
| 234 | spin_unlock_irq(&nacl->device_list_lock); |
| 235 | |
| 236 | return NULL; |
| 237 | } |
| 238 | |
| 239 | int core_free_device_list_for_node( |
| 240 | struct se_node_acl *nacl, |
| 241 | struct se_portal_group *tpg) |
| 242 | { |
| 243 | struct se_dev_entry *deve; |
| 244 | struct se_lun *lun; |
| 245 | u32 i; |
| 246 | |
| 247 | if (!nacl->device_list) |
| 248 | return 0; |
| 249 | |
| 250 | spin_lock_irq(&nacl->device_list_lock); |
| 251 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 252 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 253 | |
| 254 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
| 255 | continue; |
| 256 | |
| 257 | if (!deve->se_lun) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 258 | pr_err("%s device entries device pointer is" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 259 | " NULL, but Initiator has access.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 260 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 261 | continue; |
| 262 | } |
| 263 | lun = deve->se_lun; |
| 264 | |
| 265 | spin_unlock_irq(&nacl->device_list_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 266 | core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, |
| 267 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 268 | spin_lock_irq(&nacl->device_list_lock); |
| 269 | } |
| 270 | spin_unlock_irq(&nacl->device_list_lock); |
| 271 | |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 272 | array_free(nacl->device_list, TRANSPORT_MAX_LUNS_PER_TPG); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 273 | nacl->device_list = NULL; |
| 274 | |
| 275 | return 0; |
| 276 | } |
| 277 | |
| 278 | void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) |
| 279 | { |
| 280 | struct se_dev_entry *deve; |
Sebastian Andrzej Siewior | 1dd0a06 | 2012-01-10 14:16:58 +0100 | [diff] [blame] | 281 | unsigned long flags; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 282 | |
Sebastian Andrzej Siewior | 1dd0a06 | 2012-01-10 14:16:58 +0100 | [diff] [blame] | 283 | spin_lock_irqsave(&se_nacl->device_list_lock, flags); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 284 | deve = se_nacl->device_list[se_cmd->orig_fe_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 285 | deve->deve_cmds--; |
Sebastian Andrzej Siewior | 1dd0a06 | 2012-01-10 14:16:58 +0100 | [diff] [blame] | 286 | spin_unlock_irqrestore(&se_nacl->device_list_lock, flags); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | void core_update_device_list_access( |
| 290 | u32 mapped_lun, |
| 291 | u32 lun_access, |
| 292 | struct se_node_acl *nacl) |
| 293 | { |
| 294 | struct se_dev_entry *deve; |
| 295 | |
| 296 | spin_lock_irq(&nacl->device_list_lock); |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 297 | deve = nacl->device_list[mapped_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 298 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 299 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 300 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 301 | } else { |
| 302 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 303 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 304 | } |
| 305 | spin_unlock_irq(&nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 306 | } |
| 307 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 308 | /* core_enable_device_list_for_node(): |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 309 | * |
| 310 | * |
| 311 | */ |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 312 | int core_enable_device_list_for_node( |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 313 | struct se_lun *lun, |
| 314 | struct se_lun_acl *lun_acl, |
| 315 | u32 mapped_lun, |
| 316 | u32 lun_access, |
| 317 | struct se_node_acl *nacl, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 318 | struct se_portal_group *tpg) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 319 | { |
| 320 | struct se_port *port = lun->lun_sep; |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 321 | struct se_dev_entry *deve; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 322 | |
| 323 | spin_lock_irq(&nacl->device_list_lock); |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 324 | |
| 325 | deve = nacl->device_list[mapped_lun]; |
| 326 | |
| 327 | /* |
| 328 | * Check if the call is handling demo mode -> explict LUN ACL |
| 329 | * transition. This transition must be for the same struct se_lun |
| 330 | * + mapped_lun that was setup in demo mode.. |
| 331 | */ |
| 332 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
| 333 | if (deve->se_lun_acl != NULL) { |
| 334 | pr_err("struct se_dev_entry->se_lun_acl" |
| 335 | " already set for demo mode -> explict" |
| 336 | " LUN ACL transition\n"); |
| 337 | spin_unlock_irq(&nacl->device_list_lock); |
| 338 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 339 | } |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 340 | if (deve->se_lun != lun) { |
| 341 | pr_err("struct se_dev_entry->se_lun does" |
| 342 | " match passed struct se_lun for demo mode" |
| 343 | " -> explict LUN ACL transition\n"); |
| 344 | spin_unlock_irq(&nacl->device_list_lock); |
| 345 | return -EINVAL; |
| 346 | } |
| 347 | deve->se_lun_acl = lun_acl; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 348 | |
| 349 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 350 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 351 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 352 | } else { |
| 353 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 354 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 355 | } |
| 356 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 357 | spin_unlock_irq(&nacl->device_list_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 358 | return 0; |
| 359 | } |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 360 | |
| 361 | deve->se_lun = lun; |
| 362 | deve->se_lun_acl = lun_acl; |
| 363 | deve->mapped_lun = mapped_lun; |
| 364 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; |
| 365 | |
| 366 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
| 367 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; |
| 368 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; |
| 369 | } else { |
| 370 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; |
| 371 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; |
| 372 | } |
| 373 | |
| 374 | deve->creation_time = get_jiffies_64(); |
| 375 | deve->attach_count++; |
| 376 | spin_unlock_irq(&nacl->device_list_lock); |
| 377 | |
| 378 | spin_lock_bh(&port->sep_alua_lock); |
| 379 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); |
| 380 | spin_unlock_bh(&port->sep_alua_lock); |
| 381 | |
| 382 | return 0; |
| 383 | } |
| 384 | |
| 385 | /* core_disable_device_list_for_node(): |
| 386 | * |
| 387 | * |
| 388 | */ |
| 389 | int core_disable_device_list_for_node( |
| 390 | struct se_lun *lun, |
| 391 | struct se_lun_acl *lun_acl, |
| 392 | u32 mapped_lun, |
| 393 | u32 lun_access, |
| 394 | struct se_node_acl *nacl, |
| 395 | struct se_portal_group *tpg) |
| 396 | { |
| 397 | struct se_port *port = lun->lun_sep; |
Nicholas Bellinger | 77d4c74 | 2012-07-14 15:11:41 -0700 | [diff] [blame] | 398 | struct se_dev_entry *deve = nacl->device_list[mapped_lun]; |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 399 | |
| 400 | /* |
| 401 | * If the MappedLUN entry is being disabled, the entry in |
| 402 | * port->sep_alua_list must be removed now before clearing the |
| 403 | * struct se_dev_entry pointers below as logic in |
| 404 | * core_alua_do_transition_tg_pt() depends on these being present. |
| 405 | * |
| 406 | * deve->se_lun_acl will be NULL for demo-mode created LUNs |
| 407 | * that have not been explicitly converted to MappedLUNs -> |
| 408 | * struct se_lun_acl, but we remove deve->alua_port_list from |
| 409 | * port->sep_alua_list. This also means that active UAs and |
| 410 | * NodeACL context specific PR metadata for demo-mode |
| 411 | * MappedLUN *deve will be released below.. |
| 412 | */ |
| 413 | spin_lock_bh(&port->sep_alua_lock); |
| 414 | list_del(&deve->alua_port_list); |
| 415 | spin_unlock_bh(&port->sep_alua_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 416 | /* |
| 417 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE |
| 418 | * PR operation to complete. |
| 419 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 420 | while (atomic_read(&deve->pr_ref_count) != 0) |
| 421 | cpu_relax(); |
Nicholas Bellinger | 77d4c74 | 2012-07-14 15:11:41 -0700 | [diff] [blame] | 422 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 423 | spin_lock_irq(&nacl->device_list_lock); |
| 424 | /* |
| 425 | * Disable struct se_dev_entry LUN ACL mapping |
| 426 | */ |
| 427 | core_scsi3_ua_release_all(deve); |
| 428 | deve->se_lun = NULL; |
| 429 | deve->se_lun_acl = NULL; |
| 430 | deve->lun_flags = 0; |
| 431 | deve->creation_time = 0; |
| 432 | deve->attach_count--; |
| 433 | spin_unlock_irq(&nacl->device_list_lock); |
| 434 | |
| 435 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); |
| 436 | return 0; |
| 437 | } |
| 438 | |
| 439 | /* core_clear_lun_from_tpg(): |
| 440 | * |
| 441 | * |
| 442 | */ |
| 443 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) |
| 444 | { |
| 445 | struct se_node_acl *nacl; |
| 446 | struct se_dev_entry *deve; |
| 447 | u32 i; |
| 448 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 449 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 450 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 451 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 452 | |
| 453 | spin_lock_irq(&nacl->device_list_lock); |
| 454 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
Jörn Engel | f208324 | 2012-03-15 15:05:40 -0400 | [diff] [blame] | 455 | deve = nacl->device_list[i]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 456 | if (lun != deve->se_lun) |
| 457 | continue; |
| 458 | spin_unlock_irq(&nacl->device_list_lock); |
| 459 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 460 | core_disable_device_list_for_node(lun, NULL, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 461 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 462 | nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 463 | |
| 464 | spin_lock_irq(&nacl->device_list_lock); |
| 465 | } |
| 466 | spin_unlock_irq(&nacl->device_list_lock); |
| 467 | |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 468 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 469 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 470 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 471 | } |
| 472 | |
| 473 | static struct se_port *core_alloc_port(struct se_device *dev) |
| 474 | { |
| 475 | struct se_port *port, *port_tmp; |
| 476 | |
| 477 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 478 | if (!port) { |
| 479 | pr_err("Unable to allocate struct se_port\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 480 | return ERR_PTR(-ENOMEM); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 481 | } |
| 482 | INIT_LIST_HEAD(&port->sep_alua_list); |
| 483 | INIT_LIST_HEAD(&port->sep_list); |
| 484 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); |
| 485 | spin_lock_init(&port->sep_alua_lock); |
| 486 | mutex_init(&port->sep_tg_pt_md_mutex); |
| 487 | |
| 488 | spin_lock(&dev->se_port_lock); |
| 489 | if (dev->dev_port_count == 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 490 | pr_warn("Reached dev->dev_port_count ==" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 491 | " 0x0000ffff\n"); |
| 492 | spin_unlock(&dev->se_port_lock); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 493 | return ERR_PTR(-ENOSPC); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 494 | } |
| 495 | again: |
| 496 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 497 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 498 | * Here is the table from spc4r17 section 7.7.3.8. |
| 499 | * |
| 500 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field |
| 501 | * |
| 502 | * Code Description |
| 503 | * 0h Reserved |
| 504 | * 1h Relative port 1, historically known as port A |
| 505 | * 2h Relative port 2, historically known as port B |
| 506 | * 3h to FFFFh Relative port 3 through 65 535 |
| 507 | */ |
| 508 | port->sep_rtpi = dev->dev_rpti_counter++; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 509 | if (!port->sep_rtpi) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 510 | goto again; |
| 511 | |
| 512 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { |
| 513 | /* |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 514 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 515 | * for 16-bit wrap.. |
| 516 | */ |
| 517 | if (port->sep_rtpi == port_tmp->sep_rtpi) |
| 518 | goto again; |
| 519 | } |
| 520 | spin_unlock(&dev->se_port_lock); |
| 521 | |
| 522 | return port; |
| 523 | } |
| 524 | |
| 525 | static void core_export_port( |
| 526 | struct se_device *dev, |
| 527 | struct se_portal_group *tpg, |
| 528 | struct se_port *port, |
| 529 | struct se_lun *lun) |
| 530 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 531 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
| 532 | |
| 533 | spin_lock(&dev->se_port_lock); |
| 534 | spin_lock(&lun->lun_sep_lock); |
| 535 | port->sep_tpg = tpg; |
| 536 | port->sep_lun = lun; |
| 537 | lun->lun_sep = port; |
| 538 | spin_unlock(&lun->lun_sep_lock); |
| 539 | |
| 540 | list_add_tail(&port->sep_list, &dev->dev_sep_list); |
| 541 | spin_unlock(&dev->se_port_lock); |
| 542 | |
Christoph Hellwig | c87fbd5 | 2012-10-10 17:37:16 -0400 | [diff] [blame] | 543 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV && |
| 544 | !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 545 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
| 546 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 547 | pr_err("Unable to allocate t10_alua_tg_pt" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 548 | "_gp_member_t\n"); |
| 549 | return; |
| 550 | } |
| 551 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
| 552 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 553 | dev->t10_alua.default_tg_pt_gp); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 554 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 555 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 556 | " Group: alua/default_tg_pt_gp\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 557 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 558 | } |
| 559 | |
| 560 | dev->dev_port_count++; |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 561 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 562 | } |
| 563 | |
| 564 | /* |
| 565 | * Called with struct se_device->se_port_lock spinlock held. |
| 566 | */ |
| 567 | static void core_release_port(struct se_device *dev, struct se_port *port) |
Dan Carpenter | 5dd7ed2 | 2011-03-14 04:06:01 -0700 | [diff] [blame] | 568 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 569 | { |
| 570 | /* |
| 571 | * Wait for any port reference for PR ALL_TG_PT=1 operation |
| 572 | * to complete in __core_scsi3_alloc_registration() |
| 573 | */ |
| 574 | spin_unlock(&dev->se_port_lock); |
| 575 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) |
| 576 | cpu_relax(); |
| 577 | spin_lock(&dev->se_port_lock); |
| 578 | |
| 579 | core_alua_free_tg_pt_gp_mem(port); |
| 580 | |
| 581 | list_del(&port->sep_list); |
| 582 | dev->dev_port_count--; |
| 583 | kfree(port); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | int core_dev_export( |
| 587 | struct se_device *dev, |
| 588 | struct se_portal_group *tpg, |
| 589 | struct se_lun *lun) |
| 590 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 591 | struct se_hba *hba = dev->se_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 592 | struct se_port *port; |
| 593 | |
| 594 | port = core_alloc_port(dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 595 | if (IS_ERR(port)) |
| 596 | return PTR_ERR(port); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 597 | |
| 598 | lun->lun_se_dev = dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 599 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 600 | spin_lock(&hba->device_lock); |
| 601 | dev->export_count++; |
| 602 | spin_unlock(&hba->device_lock); |
| 603 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 604 | core_export_port(dev, tpg, port, lun); |
| 605 | return 0; |
| 606 | } |
| 607 | |
| 608 | void core_dev_unexport( |
| 609 | struct se_device *dev, |
| 610 | struct se_portal_group *tpg, |
| 611 | struct se_lun *lun) |
| 612 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 613 | struct se_hba *hba = dev->se_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 614 | struct se_port *port = lun->lun_sep; |
| 615 | |
| 616 | spin_lock(&lun->lun_sep_lock); |
| 617 | if (lun->lun_se_dev == NULL) { |
| 618 | spin_unlock(&lun->lun_sep_lock); |
| 619 | return; |
| 620 | } |
| 621 | spin_unlock(&lun->lun_sep_lock); |
| 622 | |
| 623 | spin_lock(&dev->se_port_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 624 | core_release_port(dev, port); |
| 625 | spin_unlock(&dev->se_port_lock); |
| 626 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 627 | spin_lock(&hba->device_lock); |
| 628 | dev->export_count--; |
| 629 | spin_unlock(&hba->device_lock); |
| 630 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 631 | lun->lun_se_dev = NULL; |
| 632 | } |
| 633 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 634 | static void se_release_vpd_for_dev(struct se_device *dev) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 635 | { |
| 636 | struct t10_vpd *vpd, *vpd_tmp; |
| 637 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 638 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 639 | list_for_each_entry_safe(vpd, vpd_tmp, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 640 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 641 | list_del(&vpd->vpd_list); |
| 642 | kfree(vpd); |
| 643 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 644 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 645 | } |
| 646 | |
Roland Dreier | c804537 | 2012-07-16 15:17:12 -0700 | [diff] [blame] | 647 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 648 | { |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 649 | u32 aligned_max_sectors; |
| 650 | u32 alignment; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 651 | /* |
| 652 | * Limit max_sectors to a PAGE_SIZE aligned value for modern |
| 653 | * transport_allocate_data_tasks() operation. |
| 654 | */ |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 655 | alignment = max(1ul, PAGE_SIZE / block_size); |
| 656 | aligned_max_sectors = rounddown(max_sectors, alignment); |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 657 | |
Roland Dreier | 3e03989 | 2012-10-31 09:16:45 -0700 | [diff] [blame] | 658 | if (max_sectors != aligned_max_sectors) |
| 659 | pr_info("Rounding down aligned max_sectors from %u to %u\n", |
| 660 | max_sectors, aligned_max_sectors); |
| 661 | |
| 662 | return aligned_max_sectors; |
Nicholas Bellinger | 525a48a | 2011-08-13 02:11:38 -0700 | [diff] [blame] | 663 | } |
| 664 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 665 | int se_dev_set_max_unmap_lba_count( |
| 666 | struct se_device *dev, |
| 667 | u32 max_unmap_lba_count) |
| 668 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 669 | dev->dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 670 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 671 | dev, dev->dev_attrib.max_unmap_lba_count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | int se_dev_set_max_unmap_block_desc_count( |
| 676 | struct se_device *dev, |
| 677 | u32 max_unmap_block_desc_count) |
| 678 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 679 | dev->dev_attrib.max_unmap_block_desc_count = |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 680 | max_unmap_block_desc_count; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 681 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 682 | dev, dev->dev_attrib.max_unmap_block_desc_count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 683 | return 0; |
| 684 | } |
| 685 | |
| 686 | int se_dev_set_unmap_granularity( |
| 687 | struct se_device *dev, |
| 688 | u32 unmap_granularity) |
| 689 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 690 | dev->dev_attrib.unmap_granularity = unmap_granularity; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 691 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 692 | dev, dev->dev_attrib.unmap_granularity); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 693 | return 0; |
| 694 | } |
| 695 | |
| 696 | int se_dev_set_unmap_granularity_alignment( |
| 697 | struct se_device *dev, |
| 698 | u32 unmap_granularity_alignment) |
| 699 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 700 | dev->dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 701 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 702 | dev, dev->dev_attrib.unmap_granularity_alignment); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 703 | return 0; |
| 704 | } |
| 705 | |
Nicholas Bellinger | 773cbaf | 2012-11-15 11:02:49 -0800 | [diff] [blame] | 706 | int se_dev_set_max_write_same_len( |
| 707 | struct se_device *dev, |
| 708 | u32 max_write_same_len) |
| 709 | { |
| 710 | dev->dev_attrib.max_write_same_len = max_write_same_len; |
| 711 | pr_debug("dev[%p]: Set max_write_same_len: %u\n", |
| 712 | dev, dev->dev_attrib.max_write_same_len); |
| 713 | return 0; |
| 714 | } |
| 715 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 716 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) |
| 717 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 718 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 719 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 720 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 721 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 722 | |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 723 | if (flag) { |
| 724 | pr_err("dpo_emulated not supported\n"); |
| 725 | return -EINVAL; |
| 726 | } |
| 727 | |
| 728 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 729 | } |
| 730 | |
| 731 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) |
| 732 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 733 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 734 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 735 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 736 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 737 | |
Nicholas Bellinger | fd30e93 | 2012-08-26 13:35:58 -0700 | [diff] [blame] | 738 | if (flag && |
| 739 | dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
| 740 | pr_err("emulate_fua_write not supported for pSCSI\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 741 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 742 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 743 | dev->dev_attrib.emulate_fua_write = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 744 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 745 | dev, dev->dev_attrib.emulate_fua_write); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 746 | return 0; |
| 747 | } |
| 748 | |
| 749 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) |
| 750 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 751 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 752 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 753 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 754 | } |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 755 | |
Andy Grover | c638830 | 2011-11-30 12:11:50 -0800 | [diff] [blame] | 756 | if (flag) { |
| 757 | pr_err("ua read emulated not supported\n"); |
| 758 | return -EINVAL; |
| 759 | } |
| 760 | |
| 761 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 762 | } |
| 763 | |
| 764 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) |
| 765 | { |
Christoph Hellwig | f55918f | 2011-10-14 07:30:17 -0400 | [diff] [blame] | 766 | if (flag != 0 && flag != 1) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 767 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 768 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 769 | } |
Nicholas Bellinger | fd30e93 | 2012-08-26 13:35:58 -0700 | [diff] [blame] | 770 | if (flag && |
| 771 | dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
| 772 | pr_err("emulate_write_cache not supported for pSCSI\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 773 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 774 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 775 | dev->dev_attrib.emulate_write_cache = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 776 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 777 | dev, dev->dev_attrib.emulate_write_cache); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 778 | return 0; |
| 779 | } |
| 780 | |
| 781 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) |
| 782 | { |
| 783 | if ((flag != 0) && (flag != 1) && (flag != 2)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 784 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 785 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 786 | } |
| 787 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 788 | if (dev->export_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 789 | pr_err("dev[%p]: Unable to change SE Device" |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 790 | " UA_INTRLCK_CTRL while export_count is %d\n", |
| 791 | dev, dev->export_count); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 792 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 793 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 794 | dev->dev_attrib.emulate_ua_intlck_ctrl = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 795 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 796 | dev, dev->dev_attrib.emulate_ua_intlck_ctrl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 797 | |
| 798 | return 0; |
| 799 | } |
| 800 | |
| 801 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) |
| 802 | { |
| 803 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 804 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 805 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 806 | } |
| 807 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 808 | if (dev->export_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 809 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 810 | " export_count is %d\n", |
| 811 | dev, dev->export_count); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 812 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 813 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 814 | dev->dev_attrib.emulate_tas = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 815 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 816 | dev, (dev->dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 817 | |
| 818 | return 0; |
| 819 | } |
| 820 | |
| 821 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) |
| 822 | { |
| 823 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 824 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 825 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 826 | } |
| 827 | /* |
| 828 | * We expect this value to be non-zero when generic Block Layer |
| 829 | * Discard supported is detected iblock_create_virtdevice(). |
| 830 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 831 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 832 | pr_err("Generic Block Discard not supported\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 833 | return -ENOSYS; |
| 834 | } |
| 835 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 836 | dev->dev_attrib.emulate_tpu = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 837 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 838 | dev, flag); |
| 839 | return 0; |
| 840 | } |
| 841 | |
| 842 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) |
| 843 | { |
| 844 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 845 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 846 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 847 | } |
| 848 | /* |
| 849 | * We expect this value to be non-zero when generic Block Layer |
| 850 | * Discard supported is detected iblock_create_virtdevice(). |
| 851 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 852 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 853 | pr_err("Generic Block Discard not supported\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 854 | return -ENOSYS; |
| 855 | } |
| 856 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 857 | dev->dev_attrib.emulate_tpws = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 858 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 859 | dev, flag); |
| 860 | return 0; |
| 861 | } |
| 862 | |
| 863 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) |
| 864 | { |
| 865 | if ((flag != 0) && (flag != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 866 | pr_err("Illegal value %d\n", flag); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 867 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 868 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 869 | dev->dev_attrib.enforce_pr_isids = flag; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 870 | pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 871 | (dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 872 | return 0; |
| 873 | } |
| 874 | |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 875 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
| 876 | { |
| 877 | if ((flag != 0) && (flag != 1)) { |
| 878 | printk(KERN_ERR "Illegal value %d\n", flag); |
| 879 | return -EINVAL; |
| 880 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 881 | dev->dev_attrib.is_nonrot = flag; |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 882 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 883 | dev, flag); |
| 884 | return 0; |
| 885 | } |
| 886 | |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 887 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
| 888 | { |
| 889 | if (flag != 0) { |
| 890 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" |
| 891 | " reordering not implemented\n", dev); |
| 892 | return -ENOSYS; |
| 893 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 894 | dev->dev_attrib.emulate_rest_reord = flag; |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 895 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); |
| 896 | return 0; |
| 897 | } |
| 898 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 899 | /* |
| 900 | * Note, this can only be called on unexported SE Device Object. |
| 901 | */ |
| 902 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) |
| 903 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 904 | if (dev->export_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 905 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 906 | " export_count is %d\n", |
| 907 | dev, dev->export_count); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 908 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 909 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 910 | if (!queue_depth) { |
| 911 | pr_err("dev[%p]: Illegal ZERO value for queue" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 912 | "_depth\n", dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 913 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 914 | } |
| 915 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 916 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 917 | if (queue_depth > dev->dev_attrib.hw_queue_depth) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 918 | pr_err("dev[%p]: Passed queue_depth: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 919 | " exceeds TCM/SE_Device TCQ: %u\n", |
| 920 | dev, queue_depth, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 921 | dev->dev_attrib.hw_queue_depth); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 922 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 923 | } |
| 924 | } else { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 925 | if (queue_depth > dev->dev_attrib.queue_depth) { |
| 926 | if (queue_depth > dev->dev_attrib.hw_queue_depth) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 927 | pr_err("dev[%p]: Passed queue_depth:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 928 | " %u exceeds TCM/SE_Device MAX" |
| 929 | " TCQ: %u\n", dev, queue_depth, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 930 | dev->dev_attrib.hw_queue_depth); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 931 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 932 | } |
| 933 | } |
| 934 | } |
| 935 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 936 | dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 937 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 938 | dev, queue_depth); |
| 939 | return 0; |
| 940 | } |
| 941 | |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 942 | int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) |
| 943 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 944 | if (dev->export_count) { |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 945 | pr_err("dev[%p]: Unable to change SE Device" |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 946 | " fabric_max_sectors while export_count is %d\n", |
| 947 | dev, dev->export_count); |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 948 | return -EINVAL; |
| 949 | } |
| 950 | if (!fabric_max_sectors) { |
| 951 | pr_err("dev[%p]: Illegal ZERO value for" |
| 952 | " fabric_max_sectors\n", dev); |
| 953 | return -EINVAL; |
| 954 | } |
| 955 | if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) { |
| 956 | pr_err("dev[%p]: Passed fabric_max_sectors: %u less than" |
| 957 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors, |
| 958 | DA_STATUS_MAX_SECTORS_MIN); |
| 959 | return -EINVAL; |
| 960 | } |
| 961 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 962 | if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) { |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 963 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" |
| 964 | " greater than TCM/SE_Device max_sectors:" |
| 965 | " %u\n", dev, fabric_max_sectors, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 966 | dev->dev_attrib.hw_max_sectors); |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 967 | return -EINVAL; |
| 968 | } |
| 969 | } else { |
| 970 | if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { |
| 971 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" |
| 972 | " greater than DA_STATUS_MAX_SECTORS_MAX:" |
| 973 | " %u\n", dev, fabric_max_sectors, |
| 974 | DA_STATUS_MAX_SECTORS_MAX); |
| 975 | return -EINVAL; |
| 976 | } |
| 977 | } |
| 978 | /* |
| 979 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() |
| 980 | */ |
| 981 | fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 982 | dev->dev_attrib.block_size); |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 983 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 984 | dev->dev_attrib.fabric_max_sectors = fabric_max_sectors; |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 985 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", |
| 986 | dev, fabric_max_sectors); |
| 987 | return 0; |
| 988 | } |
| 989 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 990 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) |
| 991 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 992 | if (dev->export_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 993 | pr_err("dev[%p]: Unable to change SE Device" |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 994 | " optimal_sectors while export_count is %d\n", |
| 995 | dev, dev->export_count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 996 | return -EINVAL; |
| 997 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 998 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 999 | pr_err("dev[%p]: Passed optimal_sectors cannot be" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1000 | " changed for TCM/pSCSI\n", dev); |
| 1001 | return -EINVAL; |
| 1002 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1003 | if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1004 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 1005 | " greater than fabric_max_sectors: %u\n", dev, |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1006 | optimal_sectors, dev->dev_attrib.fabric_max_sectors); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1007 | return -EINVAL; |
| 1008 | } |
| 1009 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1010 | dev->dev_attrib.optimal_sectors = optimal_sectors; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1011 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1012 | dev, optimal_sectors); |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) |
| 1017 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1018 | if (dev->export_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1019 | pr_err("dev[%p]: Unable to change SE Device block_size" |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1020 | " while export_count is %d\n", |
| 1021 | dev, dev->export_count); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1022 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1023 | } |
| 1024 | |
| 1025 | if ((block_size != 512) && |
| 1026 | (block_size != 1024) && |
| 1027 | (block_size != 2048) && |
| 1028 | (block_size != 4096)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1029 | pr_err("dev[%p]: Illegal value for block_device: %u" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1030 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
| 1031 | dev, block_size); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1032 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1033 | } |
| 1034 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1035 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1036 | pr_err("dev[%p]: Not allowed to change block_size for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1037 | " Physical Device, use for Linux/SCSI to change" |
| 1038 | " block_size for underlying hardware\n", dev); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1039 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1040 | } |
| 1041 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1042 | dev->dev_attrib.block_size = block_size; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1043 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1044 | dev, block_size); |
| 1045 | return 0; |
| 1046 | } |
| 1047 | |
| 1048 | struct se_lun *core_dev_add_lun( |
| 1049 | struct se_portal_group *tpg, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1050 | struct se_device *dev, |
| 1051 | u32 lun) |
| 1052 | { |
| 1053 | struct se_lun *lun_p; |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1054 | int rc; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1055 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1056 | lun_p = core_tpg_pre_addlun(tpg, lun); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1057 | if (IS_ERR(lun_p)) |
| 1058 | return lun_p; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1059 | |
Nicholas Bellinger | 58d9261 | 2012-03-20 21:26:48 -0700 | [diff] [blame] | 1060 | rc = core_tpg_post_addlun(tpg, lun_p, |
| 1061 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1062 | if (rc < 0) |
| 1063 | return ERR_PTR(rc); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1064 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1065 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1066 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1067 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, |
Andy Grover | 2dca673 | 2012-07-12 17:34:55 -0700 | [diff] [blame] | 1068 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1069 | /* |
| 1070 | * Update LUN maps for dynamically added initiators when |
| 1071 | * generate_node_acl is enabled. |
| 1072 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1073 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1074 | struct se_node_acl *acl; |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1075 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1076 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
Nicholas Bellinger | 052605c | 2011-07-26 17:48:43 -0700 | [diff] [blame] | 1077 | if (acl->dynamic_node_acl && |
| 1078 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || |
| 1079 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1080 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1081 | core_tpg_add_node_to_devs(acl, tpg); |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1082 | spin_lock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1083 | } |
| 1084 | } |
Roland Dreier | 2863888 | 2011-08-16 09:40:01 -0700 | [diff] [blame] | 1085 | spin_unlock_irq(&tpg->acl_node_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1086 | } |
| 1087 | |
| 1088 | return lun_p; |
| 1089 | } |
| 1090 | |
| 1091 | /* core_dev_del_lun(): |
| 1092 | * |
| 1093 | * |
| 1094 | */ |
| 1095 | int core_dev_del_lun( |
| 1096 | struct se_portal_group *tpg, |
| 1097 | u32 unpacked_lun) |
| 1098 | { |
| 1099 | struct se_lun *lun; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1100 | |
Sebastian Andrzej Siewior | 8d9efe5 | 2012-01-11 21:43:38 +0100 | [diff] [blame] | 1101 | lun = core_tpg_pre_dellun(tpg, unpacked_lun); |
| 1102 | if (IS_ERR(lun)) |
| 1103 | return PTR_ERR(lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1104 | |
| 1105 | core_tpg_post_dellun(tpg, lun); |
| 1106 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1107 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1108 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1109 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, |
| 1110 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1111 | |
| 1112 | return 0; |
| 1113 | } |
| 1114 | |
| 1115 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) |
| 1116 | { |
| 1117 | struct se_lun *lun; |
| 1118 | |
| 1119 | spin_lock(&tpg->tpg_lun_lock); |
| 1120 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1121 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1122 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1123 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1124 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1125 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1126 | spin_unlock(&tpg->tpg_lun_lock); |
| 1127 | return NULL; |
| 1128 | } |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 1129 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1130 | |
| 1131 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1132 | pr_err("%s Logical Unit Number: %u is not free on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1133 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1134 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1135 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1136 | spin_unlock(&tpg->tpg_lun_lock); |
| 1137 | return NULL; |
| 1138 | } |
| 1139 | spin_unlock(&tpg->tpg_lun_lock); |
| 1140 | |
| 1141 | return lun; |
| 1142 | } |
| 1143 | |
| 1144 | /* core_dev_get_lun(): |
| 1145 | * |
| 1146 | * |
| 1147 | */ |
| 1148 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) |
| 1149 | { |
| 1150 | struct se_lun *lun; |
| 1151 | |
| 1152 | spin_lock(&tpg->tpg_lun_lock); |
| 1153 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1154 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1155 | "_TPG-1: %u for Target Portal Group: %hu\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1156 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1157 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1158 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1159 | spin_unlock(&tpg->tpg_lun_lock); |
| 1160 | return NULL; |
| 1161 | } |
Jörn Engel | 4a5a75f | 2012-03-15 15:05:12 -0400 | [diff] [blame] | 1162 | lun = tpg->tpg_lun_list[unpacked_lun]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1163 | |
| 1164 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1165 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1166 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1167 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1168 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1169 | spin_unlock(&tpg->tpg_lun_lock); |
| 1170 | return NULL; |
| 1171 | } |
| 1172 | spin_unlock(&tpg->tpg_lun_lock); |
| 1173 | |
| 1174 | return lun; |
| 1175 | } |
| 1176 | |
| 1177 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
| 1178 | struct se_portal_group *tpg, |
| 1179 | u32 mapped_lun, |
| 1180 | char *initiatorname, |
| 1181 | int *ret) |
| 1182 | { |
| 1183 | struct se_lun_acl *lacl; |
| 1184 | struct se_node_acl *nacl; |
| 1185 | |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 1186 | if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1187 | pr_err("%s InitiatorName exceeds maximum size.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1188 | tpg->se_tpg_tfo->get_fabric_name()); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1189 | *ret = -EOVERFLOW; |
| 1190 | return NULL; |
| 1191 | } |
| 1192 | nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1193 | if (!nacl) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1194 | *ret = -EINVAL; |
| 1195 | return NULL; |
| 1196 | } |
| 1197 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1198 | if (!lacl) { |
| 1199 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1200 | *ret = -ENOMEM; |
| 1201 | return NULL; |
| 1202 | } |
| 1203 | |
| 1204 | INIT_LIST_HEAD(&lacl->lacl_list); |
| 1205 | lacl->mapped_lun = mapped_lun; |
| 1206 | lacl->se_lun_nacl = nacl; |
| 1207 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); |
| 1208 | |
| 1209 | return lacl; |
| 1210 | } |
| 1211 | |
| 1212 | int core_dev_add_initiator_node_lun_acl( |
| 1213 | struct se_portal_group *tpg, |
| 1214 | struct se_lun_acl *lacl, |
| 1215 | u32 unpacked_lun, |
| 1216 | u32 lun_access) |
| 1217 | { |
| 1218 | struct se_lun *lun; |
| 1219 | struct se_node_acl *nacl; |
| 1220 | |
| 1221 | lun = core_dev_get_lun(tpg, unpacked_lun); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1222 | if (!lun) { |
| 1223 | pr_err("%s Logical Unit Number: %u is not active on" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1224 | " Target Portal Group: %hu, ignoring request.\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1225 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
| 1226 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1227 | return -EINVAL; |
| 1228 | } |
| 1229 | |
| 1230 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1231 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1232 | return -EINVAL; |
| 1233 | |
| 1234 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && |
| 1235 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) |
| 1236 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; |
| 1237 | |
| 1238 | lacl->se_lun = lun; |
| 1239 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 1240 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
| 1241 | lun_access, nacl, tpg) < 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1242 | return -EINVAL; |
| 1243 | |
| 1244 | spin_lock(&lun->lun_acl_lock); |
| 1245 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); |
| 1246 | atomic_inc(&lun->lun_acl_count); |
| 1247 | smp_mb__after_atomic_inc(); |
| 1248 | spin_unlock(&lun->lun_acl_lock); |
| 1249 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1250 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1251 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1252 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1253 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
| 1254 | lacl->initiatorname); |
| 1255 | /* |
| 1256 | * Check to see if there are any existing persistent reservation APTPL |
| 1257 | * pre-registrations that need to be enabled for this LUN ACL.. |
| 1258 | */ |
| 1259 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); |
| 1260 | return 0; |
| 1261 | } |
| 1262 | |
| 1263 | /* core_dev_del_initiator_node_lun_acl(): |
| 1264 | * |
| 1265 | * |
| 1266 | */ |
| 1267 | int core_dev_del_initiator_node_lun_acl( |
| 1268 | struct se_portal_group *tpg, |
| 1269 | struct se_lun *lun, |
| 1270 | struct se_lun_acl *lacl) |
| 1271 | { |
| 1272 | struct se_node_acl *nacl; |
| 1273 | |
| 1274 | nacl = lacl->se_lun_nacl; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1275 | if (!nacl) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1276 | return -EINVAL; |
| 1277 | |
| 1278 | spin_lock(&lun->lun_acl_lock); |
| 1279 | list_del(&lacl->lacl_list); |
| 1280 | atomic_dec(&lun->lun_acl_count); |
| 1281 | smp_mb__after_atomic_dec(); |
| 1282 | spin_unlock(&lun->lun_acl_lock); |
| 1283 | |
Andy Grover | e80ac6c | 2012-07-12 17:34:58 -0700 | [diff] [blame] | 1284 | core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun, |
| 1285 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1286 | |
| 1287 | lacl->se_lun = NULL; |
| 1288 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1289 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1290 | " InitiatorNode: %s Mapped LUN: %u\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1291 | tpg->se_tpg_tfo->get_fabric_name(), |
| 1292 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1293 | lacl->initiatorname, lacl->mapped_lun); |
| 1294 | |
| 1295 | return 0; |
| 1296 | } |
| 1297 | |
| 1298 | void core_dev_free_initiator_node_lun_acl( |
| 1299 | struct se_portal_group *tpg, |
| 1300 | struct se_lun_acl *lacl) |
| 1301 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1302 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1303 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 1304 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
| 1305 | tpg->se_tpg_tfo->get_fabric_name(), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1306 | lacl->initiatorname, lacl->mapped_lun); |
| 1307 | |
| 1308 | kfree(lacl); |
| 1309 | } |
| 1310 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1311 | static void scsi_dump_inquiry(struct se_device *dev) |
| 1312 | { |
| 1313 | struct t10_wwn *wwn = &dev->t10_wwn; |
| 1314 | char buf[17]; |
| 1315 | int i, device_type; |
| 1316 | /* |
| 1317 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer |
| 1318 | */ |
| 1319 | for (i = 0; i < 8; i++) |
| 1320 | if (wwn->vendor[i] >= 0x20) |
| 1321 | buf[i] = wwn->vendor[i]; |
| 1322 | else |
| 1323 | buf[i] = ' '; |
| 1324 | buf[i] = '\0'; |
| 1325 | pr_debug(" Vendor: %s\n", buf); |
| 1326 | |
| 1327 | for (i = 0; i < 16; i++) |
| 1328 | if (wwn->model[i] >= 0x20) |
| 1329 | buf[i] = wwn->model[i]; |
| 1330 | else |
| 1331 | buf[i] = ' '; |
| 1332 | buf[i] = '\0'; |
| 1333 | pr_debug(" Model: %s\n", buf); |
| 1334 | |
| 1335 | for (i = 0; i < 4; i++) |
| 1336 | if (wwn->revision[i] >= 0x20) |
| 1337 | buf[i] = wwn->revision[i]; |
| 1338 | else |
| 1339 | buf[i] = ' '; |
| 1340 | buf[i] = '\0'; |
| 1341 | pr_debug(" Revision: %s\n", buf); |
| 1342 | |
| 1343 | device_type = dev->transport->get_device_type(dev); |
| 1344 | pr_debug(" Type: %s ", scsi_device_type(device_type)); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1345 | } |
| 1346 | |
| 1347 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) |
| 1348 | { |
| 1349 | struct se_device *dev; |
| 1350 | |
| 1351 | dev = hba->transport->alloc_device(hba, name); |
| 1352 | if (!dev) |
| 1353 | return NULL; |
| 1354 | |
| 1355 | dev->se_hba = hba; |
| 1356 | dev->transport = hba->transport; |
| 1357 | |
| 1358 | INIT_LIST_HEAD(&dev->dev_list); |
| 1359 | INIT_LIST_HEAD(&dev->dev_sep_list); |
| 1360 | INIT_LIST_HEAD(&dev->dev_tmr_list); |
| 1361 | INIT_LIST_HEAD(&dev->delayed_cmd_list); |
| 1362 | INIT_LIST_HEAD(&dev->state_list); |
| 1363 | INIT_LIST_HEAD(&dev->qf_cmd_list); |
| 1364 | spin_lock_init(&dev->stats_lock); |
| 1365 | spin_lock_init(&dev->execute_task_lock); |
| 1366 | spin_lock_init(&dev->delayed_cmd_lock); |
| 1367 | spin_lock_init(&dev->dev_reservation_lock); |
| 1368 | spin_lock_init(&dev->se_port_lock); |
| 1369 | spin_lock_init(&dev->se_tmr_lock); |
| 1370 | spin_lock_init(&dev->qf_cmd_lock); |
| 1371 | atomic_set(&dev->dev_ordered_id, 0); |
| 1372 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); |
| 1373 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); |
| 1374 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); |
| 1375 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); |
| 1376 | spin_lock_init(&dev->t10_pr.registration_lock); |
| 1377 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); |
| 1378 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); |
| 1379 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); |
| 1380 | |
| 1381 | dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
| 1382 | dev->t10_wwn.t10_dev = dev; |
| 1383 | dev->t10_alua.t10_dev = dev; |
| 1384 | |
| 1385 | dev->dev_attrib.da_dev = dev; |
| 1386 | dev->dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
| 1387 | dev->dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; |
| 1388 | dev->dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; |
| 1389 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
| 1390 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; |
| 1391 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; |
| 1392 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; |
| 1393 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1394 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
| 1395 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
| 1396 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |
| 1397 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
| 1398 | dev->dev_attrib.max_unmap_block_desc_count = |
| 1399 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; |
| 1400 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; |
| 1401 | dev->dev_attrib.unmap_granularity_alignment = |
| 1402 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
Nicholas Bellinger | 773cbaf | 2012-11-15 11:02:49 -0800 | [diff] [blame] | 1403 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1404 | dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; |
| 1405 | dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; |
| 1406 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1407 | return dev; |
| 1408 | } |
| 1409 | |
| 1410 | int target_configure_device(struct se_device *dev) |
| 1411 | { |
| 1412 | struct se_hba *hba = dev->se_hba; |
| 1413 | int ret; |
| 1414 | |
| 1415 | if (dev->dev_flags & DF_CONFIGURED) { |
| 1416 | pr_err("se_dev->se_dev_ptr already set for storage" |
| 1417 | " object\n"); |
| 1418 | return -EEXIST; |
| 1419 | } |
| 1420 | |
| 1421 | ret = dev->transport->configure_device(dev); |
| 1422 | if (ret) |
| 1423 | goto out; |
| 1424 | dev->dev_flags |= DF_CONFIGURED; |
| 1425 | |
| 1426 | /* |
| 1427 | * XXX: there is not much point to have two different values here.. |
| 1428 | */ |
| 1429 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; |
| 1430 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; |
| 1431 | |
| 1432 | /* |
| 1433 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers |
| 1434 | */ |
| 1435 | dev->dev_attrib.hw_max_sectors = |
| 1436 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, |
| 1437 | dev->dev_attrib.hw_block_size); |
| 1438 | |
| 1439 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); |
| 1440 | dev->creation_time = get_jiffies_64(); |
| 1441 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1442 | ret = core_setup_alua(dev); |
| 1443 | if (ret) |
| 1444 | goto out; |
| 1445 | |
| 1446 | /* |
| 1447 | * Startup the struct se_device processing thread |
| 1448 | */ |
| 1449 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, |
| 1450 | dev->transport->name); |
| 1451 | if (!dev->tmr_wq) { |
| 1452 | pr_err("Unable to create tmr workqueue for %s\n", |
| 1453 | dev->transport->name); |
| 1454 | ret = -ENOMEM; |
| 1455 | goto out_free_alua; |
| 1456 | } |
| 1457 | |
| 1458 | /* |
| 1459 | * Setup work_queue for QUEUE_FULL |
| 1460 | */ |
| 1461 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); |
| 1462 | |
| 1463 | /* |
| 1464 | * Preload the initial INQUIRY const values if we are doing |
| 1465 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI |
| 1466 | * passthrough because this is being provided by the backend LLD. |
| 1467 | */ |
| 1468 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) { |
| 1469 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); |
| 1470 | strncpy(&dev->t10_wwn.model[0], |
| 1471 | dev->transport->inquiry_prod, 16); |
| 1472 | strncpy(&dev->t10_wwn.revision[0], |
| 1473 | dev->transport->inquiry_rev, 4); |
| 1474 | } |
| 1475 | |
| 1476 | scsi_dump_inquiry(dev); |
| 1477 | |
| 1478 | spin_lock(&hba->device_lock); |
| 1479 | hba->dev_count++; |
| 1480 | spin_unlock(&hba->device_lock); |
| 1481 | return 0; |
| 1482 | |
| 1483 | out_free_alua: |
| 1484 | core_alua_free_lu_gp_mem(dev); |
| 1485 | out: |
| 1486 | se_release_vpd_for_dev(dev); |
| 1487 | return ret; |
| 1488 | } |
| 1489 | |
| 1490 | void target_free_device(struct se_device *dev) |
| 1491 | { |
| 1492 | struct se_hba *hba = dev->se_hba; |
| 1493 | |
| 1494 | WARN_ON(!list_empty(&dev->dev_sep_list)); |
| 1495 | |
| 1496 | if (dev->dev_flags & DF_CONFIGURED) { |
| 1497 | destroy_workqueue(dev->tmr_wq); |
| 1498 | |
| 1499 | spin_lock(&hba->device_lock); |
| 1500 | hba->dev_count--; |
| 1501 | spin_unlock(&hba->device_lock); |
| 1502 | } |
| 1503 | |
| 1504 | core_alua_free_lu_gp_mem(dev); |
| 1505 | core_scsi3_free_all_registrations(dev); |
| 1506 | se_release_vpd_for_dev(dev); |
| 1507 | |
| 1508 | dev->transport->free_device(dev); |
| 1509 | } |
| 1510 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1511 | int core_dev_setup_virtual_lun0(void) |
| 1512 | { |
| 1513 | struct se_hba *hba; |
| 1514 | struct se_device *dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1515 | char buf[16]; |
| 1516 | int ret; |
| 1517 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1518 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1519 | if (IS_ERR(hba)) |
| 1520 | return PTR_ERR(hba); |
| 1521 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1522 | dev = target_alloc_device(hba, "virt_lun0"); |
| 1523 | if (!dev) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1524 | ret = -ENOMEM; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1525 | goto out_free_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1526 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1527 | |
| 1528 | memset(buf, 0, 16); |
| 1529 | sprintf(buf, "rd_pages=8"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1530 | hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1531 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1532 | ret = target_configure_device(dev); |
| 1533 | if (ret) |
| 1534 | goto out_free_se_dev; |
| 1535 | |
| 1536 | lun0_hba = hba; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1537 | g_lun0_dev = dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1538 | return 0; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1539 | |
| 1540 | out_free_se_dev: |
| 1541 | target_free_device(dev); |
| 1542 | out_free_hba: |
| 1543 | core_delete_hba(hba); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1544 | return ret; |
| 1545 | } |
| 1546 | |
| 1547 | |
| 1548 | void core_dev_release_virtual_lun0(void) |
| 1549 | { |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1550 | struct se_hba *hba = lun0_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1551 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1552 | if (!hba) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1553 | return; |
| 1554 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1555 | if (g_lun0_dev) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1556 | target_free_device(g_lun0_dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1557 | core_delete_hba(hba); |
| 1558 | } |