target_core_cdb.c revision 8359cf43b9dccddeebb0d247146719a14ce6371a
1c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 2c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CDB emulation for non-READ/WRITE commands. 3c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 4c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Copyright (c) 2002, 2003, 2004, 2005 PyX Technologies, Inc. 5c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Copyright (c) 2005, 2006, 2007 SBE, Inc. 6c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Copyright (c) 2007-2010 Rising Tide Systems 7c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Copyright (c) 2008-2010 Linux-iSCSI.org 8c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 9c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 10c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 11c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * This program is free software; you can redistribute it and/or modify 12c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * it under the terms of the GNU General Public License as published by 13c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 14c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * (at your option) any later version. 15c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 16c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * This program is distributed in the hope that it will be useful, 17c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 18c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * GNU General Public License for more details. 20c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 21c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * You should have received a copy of the GNU General Public License 22c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * along with this program; if not, write to the Free Software 23c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 24c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 25c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 2611650b859681e03fdbf26277fcfc5f1f62186703Andy Shevchenko#include <linux/kernel.h> 27c9abb9bb0b8451588509192bd53005d65c02986cNicholas Bellinger#include <linux/module.h> 28c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger#include <asm/unaligned.h> 29c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger#include <scsi/scsi.h> 30c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 31c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger#include <target/target_core_base.h> 32c4795fb20edf2fe2c862c8fe9f8b681edeb79ac1Christoph Hellwig#include <target/target_core_backend.h> 33c4795fb20edf2fe2c862c8fe9f8b681edeb79ac1Christoph Hellwig#include <target/target_core_fabric.h> 34e26d99aed42ec6cdc9540d19c77ac5d4dd2c5b00Christoph Hellwig 35e26d99aed42ec6cdc9540d19c77ac5d4dd2c5b00Christoph Hellwig#include "target_core_internal.h" 36c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger#include "target_core_ua.h" 37c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 38c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 39c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_fill_alua_data(struct se_port *port, unsigned char *buf) 40c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 41c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 42c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 43c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 44c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 45c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS. 46c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 47c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x80; 48c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 49c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 50c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set TPGS field for explict and/or implict ALUA access type 51c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and opteration. 52c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 53c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * See spc4r17 section 6.4.2 Table 135 54c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 55c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!port) 56c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return; 57c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 58c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!tg_pt_gp_mem) 59c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return; 60c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 61c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 62c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 63c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (tg_pt_gp) 64c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; 65c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 66c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 67c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 68c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 69c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_inquiry_std(struct se_cmd *cmd) 70c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 71e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_lun *lun = cmd->se_lun; 725951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 73052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger struct se_portal_group *tpg = lun->lun_sep->sep_tpg; 7405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 75c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 76c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 77c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure we at least have 6 bytes of INQUIRY response 78c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload going back for EVPD=0 79c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 80c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 6) { 816708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("SCSI Inquiry payload length: %u" 82c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD=0\n", cmd->data_length); 83e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 84c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 85c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 8605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 8705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 88052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger if (dev == tpg->tpg_virt_lun0.lun_se_dev) { 89052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger buf[0] = 0x3f; /* Not connected */ 90052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger } else { 91052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 92052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger if (buf[0] == TYPE_TAPE) 93052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger buf[1] = 0x80; 94052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger } 95c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = dev->transport->get_device_rev(dev); 96c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 97c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 98c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Enable SCCS and TPGS fields for Emulated ALUA 99c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 100e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) 101c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_fill_alua_data(lun->lun_sep, buf); 102c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 103c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 8) { 104c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 1; /* Set additional length to 1 */ 10505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto out; 106c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 107c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 108c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x32; /* Sync=1 and CmdQue=1 */ 109c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 110c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 111c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Do not include vendor, product, reversion info in INQUIRY 112c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * response payload for cdbs with a small allocation length. 113c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 114c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 36) { 115c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 3; /* Set additional length to 3 */ 11605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto out; 117c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 118c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1198359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel snprintf(&buf[8], 8, "LIO-ORG"); 1208359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel snprintf(&buf[16], 16, "%s", dev->se_sub_dev->t10_wwn.model); 1218359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel snprintf(&buf[32], 4, "%s", dev->se_sub_dev->t10_wwn.revision); 122c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 31; /* Set additional length to 31 */ 12305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 12405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Groverout: 12505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 126c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 127c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 128c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 129c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* unit serial number */ 130c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 131c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 132c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1335951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 134c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 len = 0; 135c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 136c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (dev->se_sub_dev->su_dev_flags & 137c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SDF_EMULATED_VPD_UNIT_SERIAL) { 138c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 unit_serial_len; 139c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1408359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel unit_serial_len = strlen(dev->se_sub_dev->t10_wwn.unit_serial); 141c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len++; /* For NULL Terminator */ 142c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 143c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + unit_serial_len) > cmd->data_length) { 144c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += unit_serial_len; 145c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = ((len >> 8) & 0xff); 146c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (len & 0xff); 147c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 148c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1498359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel len += sprintf(&buf[4], "%s", 1508359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel dev->se_sub_dev->t10_wwn.unit_serial); 151c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len++; /* Extra Byte for NULL Terminator */ 152c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = len; 153c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 154c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 155c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 156c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 157784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellingerstatic void 158b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenkotarget_parse_naa_6h_vendor_specific(struct se_device *dev, unsigned char *buf) 159784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger{ 160784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger unsigned char *p = &dev->se_sub_dev->t10_wwn.unit_serial[0]; 161b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko int cnt; 162b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko bool next = true; 163b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 164784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger /* 165784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 166784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 167784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 168784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 169784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 170784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * per device uniqeness. 171784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger */ 172b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko for (cnt = 0; *p && cnt < 13; p++) { 173b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko int val = hex_to_bin(*p); 174b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 175b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko if (val < 0) 176784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger continue; 177b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 178b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko if (next) { 179b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko next = false; 180b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko buf[cnt++] |= val; 181784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } else { 182b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko next = true; 183b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko buf[cnt] = val << 4; 184784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } 185784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } 186784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger} 187784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger 188c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 189c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Device identification VPD, for a complete list of 190c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * DESIGNATOR TYPEs see spc4r17 Table 459. 191c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 192c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 193c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 194c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1955951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 196e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_lun *lun = cmd->se_lun; 197c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct se_port *port = NULL; 198c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct se_portal_group *tpg = NULL; 199c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 200c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 201c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 202e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover unsigned char *prod = &dev->se_sub_dev->t10_wwn.model[0]; 203c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 prod_len; 204c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 unit_serial_len, off = 0; 205c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 len = 0, id_len; 206c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 207c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off = 4; 208c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 209c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 210c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NAA IEEE Registered Extended Assigned designator format, see 211c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * spc4r17 section 7.7.3.6.5 212c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 213c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * We depend upon a target_core_mod/ConfigFS provided 214c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 215c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * value in order to return the NAA id. 216c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 217c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!(dev->se_sub_dev->su_dev_flags & SDF_EMULATED_VPD_UNIT_SERIAL)) 218c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_t10_vend_desc; 219c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 220c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (off + 20 > cmd->data_length) 221c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_t10_vend_desc; 222c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 223c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* CODE SET == Binary */ 224c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x1; 225c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 226163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == addressed logical unit: 0)b */ 227c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x00; 228c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 229c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier/Designator type == NAA identifier */ 230163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko buf[off++] |= 0x3; 231c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; 232c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 233c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier/Designator length */ 234c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x10; 235c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 236c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 237c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Start NAA IEEE Registered Extended Identifier/Designator 238c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 239c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (0x6 << 4); 240c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 241c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 242c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Use OpenFabrics IEEE Company ID: 00 14 05 243c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 244c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x01; 245c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x40; 246c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = (0x5 << 4); 247c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 248c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 249c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Return ConfigFS Unit Serial Number information for 250c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * VENDOR_SPECIFIC_IDENTIFIER and 251c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION 252c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 253784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger target_parse_naa_6h_vendor_specific(dev, &buf[off]); 25411650b859681e03fdbf26277fcfc5f1f62186703Andy Shevchenko 255c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len = 20; 256c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off = (len + 4); 257c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 258c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_t10_vend_desc: 259c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 260c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 261c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 262c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger id_len = 8; /* For Vendor field */ 263c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len = 4; /* For VPD Header */ 264c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len += 8; /* For Vendor field */ 265c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len += strlen(prod); 266c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len++; /* For : */ 267c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 268c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (dev->se_sub_dev->su_dev_flags & 269c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SDF_EMULATED_VPD_UNIT_SERIAL) { 270c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len = 271e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover strlen(&dev->se_sub_dev->t10_wwn.unit_serial[0]); 272c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len++; /* For NULL Terminator */ 273c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 274c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((len + (id_len + 4) + 275c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (prod_len + unit_serial_len)) > 276c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length) { 277c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (prod_len + unit_serial_len); 278c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_port; 279c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 2808359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel id_len += sprintf(&buf[off+12], "%s:%s", prod, 281e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover &dev->se_sub_dev->t10_wwn.unit_serial[0]); 282c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 283c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x2; /* ASCII */ 284c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+1] = 0x1; /* T10 Vendor ID */ 285c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+2] = 0x0; 2868359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel memcpy(&buf[off+4], "LIO-ORG", 8); 287c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Extra Byte for NULL Terminator */ 288c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger id_len++; 289c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier Length */ 290c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+3] = id_len; 291c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size for Designation descriptor */ 292c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (id_len + 4); 293c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += (id_len + 4); 294c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 295c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD 296c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 297c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_port: 298c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger port = lun->lun_sep; 299c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (port) { 300c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_lu_gp *lu_gp; 301c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 padding, scsi_name_len; 302c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 lu_gp_id = 0; 303c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 tg_pt_gp_id = 0; 304c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 tpgt; 305c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 306c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tpg = port->sep_tpg; 307c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 308c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Relative target port identifer, see spc4r17 309c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.7 310c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 311c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 312c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 313c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 314c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 315c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 316c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_tpgi; 317c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 318c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 319e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 320c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 321c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 322163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 323c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 324c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Relative target port identifer */ 325c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x4; 326c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 327c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 328c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Skip over Obsolete field in RTPI payload 329c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * in Table 472 */ 330c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; 331c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((port->sep_rtpi >> 8) & 0xff); 332c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (port->sep_rtpi & 0xff); 333c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 334c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 335c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Target port group identifier, see spc4r17 336c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.8 337c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 338c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 339c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 340c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 341c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_tpgi: 342e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->t10_alua.alua_type != 343c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SPC3_ALUA_EMULATED) 344c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 345c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 346c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 347c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 348c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 349c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 350c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 351c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!tg_pt_gp_mem) 352c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 353c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 354c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 355c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 3566708bb27bb2703da238f21f516034263348af5beAndy Grover if (!tg_pt_gp) { 357c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 358c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 359c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 360c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 361c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 362c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 363c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 364e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 365c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 366c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 367163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 368c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 369c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Target port group identifier */ 370c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x5; 371c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 372c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 373c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved Field */ 374c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); 375c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (tg_pt_gp_id & 0xff); 376c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 377c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 378c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Logical Unit Group identifier, see spc4r17 379c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.8 380c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 381c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_lu_gp: 382c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 383c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 384c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 385c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 386c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 3876708bb27bb2703da238f21f516034263348af5beAndy Grover if (!lu_gp_mem) 388c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 389c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 390c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 391c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 3926708bb27bb2703da238f21f516034263348af5beAndy Grover if (!lu_gp) { 393c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 394c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 395c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 396c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp_id = lu_gp->lu_gp_id; 397c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 398c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 399c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 400c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Logical Unit Group identifier */ 401c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x6; 402c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 403c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 404c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved Field */ 405c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((lu_gp_id >> 8) & 0xff); 406c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (lu_gp_id & 0xff); 407c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 408c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 409c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * SCSI name string designator, see spc4r17 410c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.11 411c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 412c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 413c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 414c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 415c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_scsi_name: 416e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover scsi_name_len = strlen(tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 417c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */ 418c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 10; 419c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Check for 4-byte padding */ 420c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger padding = ((-scsi_name_len) & 3); 421c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (padding != 0) 422c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += padding; 423c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size + Designation descriptor */ 424c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 4; 425c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 426c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + scsi_name_len) > cmd->data_length) { 427c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += scsi_name_len; 428c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto set_len; 429c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 430c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 431e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 432c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 433c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 434163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 435c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 436c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == SCSI name string */ 437c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x8; 438c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved and length */ 439c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 440c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * SCSI name string identifer containing, $FABRIC_MOD 441c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * dependent information. For LIO-Target and iSCSI 442c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 443c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * UTF-8 encoding. 444c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 445e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 446c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 447e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 448c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 1 /* Include NULL terminator */; 449c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 450c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The null-terminated, null-padded (see 4.4.2) SCSI 451c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NAME STRING field contains a UTF-8 format string. 452c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The number of bytes in the SCSI NAME STRING field 453c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * (i.e., the value in the DESIGNATOR LENGTH field) 454c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * shall be no larger than 256 and shall be a multiple 455c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * of four. 456c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 457c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (padding) 458c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += padding; 459c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 460c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off-1] = scsi_name_len; 461c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += scsi_name_len; 462c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size + Designation descriptor */ 463c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (scsi_name_len + 4); 464c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 465c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerset_len: 466c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = ((len >> 8) & 0xff); 467c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ 468c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 469c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 470c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 471c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Extended INQUIRY Data VPD Page */ 472c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 473c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 474c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 475c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 60) 476c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 477c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 4781289a0571c037b4757f60597d646aedb70361ec3Roland Dreier buf[3] = 0x3c; 479c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Set HEADSUP, ORDSUP, SIMPSUP */ 480c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x07; 481c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 482c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* If WriteCache emulation is enabled, set V_SUP */ 4835951146dea1ac8ff2f177477c907084d63913cadAndy Grover if (cmd->se_dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) 484c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[6] = 0x01; 485c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 486c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 487c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 488c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Block Limits VPD page */ 489c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 490c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 491c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 4925951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 493c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int have_tp = 0; 494c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 495c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 496c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Following sbc3r22 section 6.5.3 Block Limits VPD page, when 497c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * emulate_tpu=1 or emulate_tpws=1 we will be expect a 498c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * different page length for Thin Provisioning. 499c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 500e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 501c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger have_tp = 1; 502c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 503c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < (0x10 + 4)) { 5046708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("Received data_length: %u" 505c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD 0xb0\n", 506c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length); 507e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 508c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 509c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 510c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (have_tp && cmd->data_length < (0x3c + 4)) { 5116708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("Received data_length: %u" 512c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for TPE=1 EVPD 0xb0\n", 513c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length); 514c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger have_tp = 0; 515c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 516c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 517c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 518c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = have_tp ? 0x3c : 0x10; 519c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 5206708bb27bb2703da238f21f516034263348af5beAndy Grover /* Set WSNZ to 1 */ 5216708bb27bb2703da238f21f516034263348af5beAndy Grover buf[4] = 0x01; 5226708bb27bb2703da238f21f516034263348af5beAndy Grover 523c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 524c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL TRANSFER LENGTH GRANULARITY 525c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 526c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be16(1, &buf[6]); 527c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 528c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 529c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM TRANSFER LENGTH 530c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 531e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_sectors, &buf[8]); 532c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 533c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 534c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL TRANSFER LENGTH 535c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 536e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.optimal_sectors, &buf[12]); 537c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 538c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 539c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Exit now if we don't support TP or the initiator sent a too 540c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * short buffer. 541c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 542c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!have_tp || cmd->data_length < (0x3c + 4)) 543c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 544c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 545c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 546c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM UNMAP LBA COUNT 547c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 548e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count, &buf[20]); 549c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 550c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 551c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 552c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 553e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count, 554c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger &buf[24]); 555c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 556c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 557c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL UNMAP GRANULARITY 558c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 559e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity, &buf[28]); 560c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 561c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 562c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * UNMAP GRANULARITY ALIGNMENT 563c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 564e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment, 565c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger &buf[32]); 566e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment != 0) 567c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[32] |= 0x80; /* Set the UGAVALID bit */ 568c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 569c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 570c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 571c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 572e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier/* Block Device Characteristics VPD page */ 573e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreierstatic int 574e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreiertarget_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 575e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier{ 576e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier struct se_device *dev = cmd->se_dev; 577e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 578e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[0] = dev->transport->get_device_type(dev); 579e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[3] = 0x3c; 580e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 581e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier if (cmd->data_length >= 5 && 582e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier dev->se_sub_dev->se_dev_attrib.is_nonrot) 583e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[5] = 1; 584e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 585e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier return 0; 586e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier} 587e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 588c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Thin Provisioning VPD */ 589c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 590c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 591c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 5925951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 593c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 594c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 595c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From sbc3r22 section 6.5.4 Thin Provisioning VPD page: 596c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 597c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 598c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * zero, then the page length shall be set to 0004h. If the DP bit 599c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * is set to one, then the page length shall be set to the value 600c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * defined in table 162. 601c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 602c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 603c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 604c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 605c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set Hardcoded length mentioned above for DP=0 606c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 607c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be16(0x0004, &buf[2]); 608c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 609c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 610c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The THRESHOLD EXPONENT field indicates the threshold set size in 611c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * LBAs as a power of 2 (i.e., the threshold set size is equal to 612c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 2(threshold exponent)). 613c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 614c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note that this is currently set to 0x00 as mkp says it will be 615c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * changing again. We can enable this once it has settled in T10 616c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and is actually used by Linux/SCSI ML code. 617c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 618c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 0x00; 619c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 620c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 621c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPU bit set to one indicates that the device server supports 622c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * the UNMAP command (see 5.25). A TPU bit set to zero indicates 623c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * that the device server does not support the UNMAP command. 624c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 625e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu != 0) 626c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x80; 627c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 628c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 629c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPWS bit set to one indicates that the device server supports 630c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 631c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPWS bit set to zero indicates that the device server does not 632c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * support the use of the WRITE SAME (16) command to unmap LBAs. 633c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 634e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpws != 0) 635c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] |= 0x40; 636c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 637c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 638c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 639c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 640c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 641b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreiertarget_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 642b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 643b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreierstatic struct { 644b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier uint8_t page; 645b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier int (*emulate)(struct se_cmd *, unsigned char *); 646b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier} evpd_handlers[] = { 647b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x00, .emulate = target_emulate_evpd_00 }, 648b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x80, .emulate = target_emulate_evpd_80 }, 649b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x83, .emulate = target_emulate_evpd_83 }, 650b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x86, .emulate = target_emulate_evpd_86 }, 651b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0xb0, .emulate = target_emulate_evpd_b0 }, 652e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier { .page = 0xb1, .emulate = target_emulate_evpd_b1 }, 653b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0xb2, .emulate = target_emulate_evpd_b2 }, 654b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier}; 655b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 656b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier/* supported vital product data pages */ 657b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreierstatic int 658b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreiertarget_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 659b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier{ 660b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier int p; 661b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 662b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cmd->data_length < 8) 663b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier return 0; 664b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier /* 665b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * Only report the INQUIRY EVPD=1 pages after a valid NAA 666b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * Registered Extended LUN WWN has been set via ConfigFS 667b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * during device creation/restart. 668b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier */ 669b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cmd->se_dev->se_sub_dev->su_dev_flags & 670b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier SDF_EMULATED_VPD_UNIT_SERIAL) { 671b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[3] = ARRAY_SIZE(evpd_handlers); 672b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier for (p = 0; p < min_t(int, ARRAY_SIZE(evpd_handlers), 673b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier cmd->data_length - 4); ++p) 674b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[p + 4] = evpd_handlers[p].page; 675b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier } 676b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 677b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier return 0; 678b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier} 679b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 6805bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_inquiry(struct se_task *task) 681c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 6826ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 6835951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 68405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 685a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = cmd->t_task_cdb; 68605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int p, ret; 687c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 688d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!(cdb[1] & 0x1)) { 689d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig ret = target_emulate_inquiry_std(cmd); 690d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig goto out; 691d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 692c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 693c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 694c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure we at least have 4 bytes of INQUIRY response 695c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload for 0x00 going back for EVPD=1. Note that 0x80 696c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and 0x83 will check for enough payload data length and 697c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * jump to set_len: label when there is not enough inquiry EVPD 698c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload length left for the next outgoing EVPD metadata 699c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 700c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 4) { 7016708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("SCSI Inquiry payload length: %u" 702c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD=1\n", cmd->data_length); 70303e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 704e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 705c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 70605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 70705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 70805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 709c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 710c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 711d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 712b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cdb[2] == evpd_handlers[p].page) { 713b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[1] = cdb[2]; 71405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover ret = evpd_handlers[p].emulate(cmd, buf); 715d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig goto out_unmap; 716b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier } 717d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 718c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7196708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 72003e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 721d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig ret = -EINVAL; 722d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig 723d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwigout_unmap: 724d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_kunmap_first_data_page(cmd); 725d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwigout: 726d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!ret) { 727d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 728d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 729d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 730d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig return ret; 731c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 732c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7335bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_readcapacity(struct se_task *task) 734c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 7356ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 7365951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 73705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 738904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger unsigned long long blocks_long = dev->transport->get_blocks(dev); 739904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger u32 blocks; 740904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger 741904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger if (blocks_long >= 0x00000000ffffffff) 742904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger blocks = 0xffffffff; 743904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger else 744904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger blocks = (u32)blocks_long; 745c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 74605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 74705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 748c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (blocks >> 24) & 0xff; 749c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = (blocks >> 16) & 0xff; 750c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = (blocks >> 8) & 0xff; 751c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = blocks & 0xff; 752e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[4] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff; 753e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[5] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff; 754e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[6] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff; 755e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[7] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff; 756c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 757c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set max 32-bit blocks to signal SERVICE ACTION READ_CAPACITY_16 758c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 759e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 760c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be32(0xFFFFFFFF, &buf[0]); 761c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 76205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 76305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 764d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 765d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 766c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 767c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 768c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7695bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_readcapacity_16(struct se_task *task) 770c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 7716ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 7725951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 77305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 774c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned long long blocks = dev->transport->get_blocks(dev); 775c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 77605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 77705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 778c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (blocks >> 56) & 0xff; 779c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = (blocks >> 48) & 0xff; 780c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = (blocks >> 40) & 0xff; 781c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (blocks >> 32) & 0xff; 782c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = (blocks >> 24) & 0xff; 783c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = (blocks >> 16) & 0xff; 784c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[6] = (blocks >> 8) & 0xff; 785c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = blocks & 0xff; 786e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[8] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff; 787e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[9] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff; 788e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[10] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff; 789e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[11] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff; 790c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 791c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set Thin Provisioning Enable bit following sbc3r22 in section 792c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * READ CAPACITY (16) byte 14 if emulate_tpu or emulate_tpws is enabled. 793c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 794e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 795c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[14] = 0x80; 796c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 79705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 79805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 799d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 800d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 801c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 802c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 803c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 804c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 805c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_rwrecovery(unsigned char *p) 806c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 807c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x01; 808c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x0a; 809c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 810c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 12; 811c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 812c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 813c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 814c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_control(struct se_device *dev, unsigned char *p) 815c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 816c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x0a; 817c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x0a; 818c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[2] = 2; 819c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 8205de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * From spc4r23, 7.4.7 Control mode page 8215de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8225de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 8235de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * restrictions on the algorithm used for reordering commands 8245de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * having the SIMPLE task attribute (see SAM-4). 8255de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8265de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * Table 368 -- QUEUE ALGORITHM MODIFIER field 8275de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * Code Description 8285de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 0h Restricted reordering 8295de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 1h Unrestricted reordering allowed 8305de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 2h to 7h Reserved 8315de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8h to Fh Vendor specific 8325de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8335de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 8345de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * the device server shall order the processing sequence of commands 8355de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * having the SIMPLE task attribute such that data integrity is maintained 8365de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 8375de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * requests is halted at any time, the final value of all data observable 8385de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * on the medium shall be the same as if all the commands had been processed 8395de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * with the ORDERED task attribute). 8405de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8415de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 8425de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * device server may reorder the processing sequence of commands having the 8435de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * SIMPLE task attribute in any manner. Any data integrity exposures related to 8445de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * command sequence order shall be explicitly handled by the application client 8455de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * through the selection of appropriate ommands and task attributes. 8465de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger */ 8475de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger p[3] = (dev->se_sub_dev->se_dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 8485de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger /* 849c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From spc4r17, section 7.4.6 Control mode Page 850c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 851c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 852c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 853c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 00b: The logical unit shall clear any unit attention condition 854c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 855c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall not establish a unit attention condition when a com- 856c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 857c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status. 858c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 859c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 10b: The logical unit shall not clear any unit attention condition 860c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 861c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall not establish a unit attention condition when 862c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * a command is completed with BUSY, TASK SET FULL, or RESERVATION 863c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CONFLICT status. 864c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 865c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 11b a The logical unit shall not clear any unit attention condition 866c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 867c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall establish a unit attention condition for the 868c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * initiator port associated with the I_T nexus on which the BUSY, 869c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 870c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Depending on the status, the additional sense code shall be set to 871c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 872c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 873c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * command, a unit attention condition shall be established only once 874c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 875c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * to the number of commands completed with one of those status codes. 876c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 877e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover p[4] = (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : 878e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; 879c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 880c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From spc4r17, section 7.4.6 Control mode Page 881c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 882c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Task Aborted Status (TAS) bit set to zero. 883c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 884c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A task aborted status (TAS) bit set to zero specifies that aborted 885c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * tasks shall be terminated by the device server without any response 886c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * to the application client. A TAS bit set to one specifies that tasks 887c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * aborted by the actions of an I_T nexus other than the I_T nexus on 888c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * which the command was received shall be completed with TASK ABORTED 889c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status (see SAM-4). 890c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 891e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover p[5] = (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? 0x40 : 0x00; 892c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[8] = 0xff; 893c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[9] = 0xff; 894c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[11] = 30; 895c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 896c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 12; 897c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 898c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 899c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 900c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_caching(struct se_device *dev, unsigned char *p) 901c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 902c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x08; 903c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x12; 904e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) 905c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[2] = 0x04; /* Write Cache Enable */ 906c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[12] = 0x20; /* Disabled Read Ahead */ 907c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 908c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 20; 909c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 910c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 911c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 912c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_write_protect(unsigned char *buf, int type) 913c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 914c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 915c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * I believe that the WP bit (bit 7) in the mode header is the same for 916c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * all device types.. 917c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 918c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (type) { 919c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_DISK: 920c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_TAPE: 921c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 922c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] |= 0x80; /* WP bit */ 923c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 924c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 925c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 926c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 927c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 928c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_dpofua(unsigned char *buf, int type) 929c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 930c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (type) { 931c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_DISK: 932c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] |= 0x10; /* DPOFUA bit */ 933c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 934c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 935c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 936c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 937c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 938c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 9395bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_modesense(struct se_task *task) 940c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 9416ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 9425951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 943a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover char *cdb = cmd->t_task_cdb; 94405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *rbuf; 945c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int type = dev->transport->get_device_type(dev); 9466ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 9476ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig int offset = ten ? 8 : 4; 948c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int length = 0; 949c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF]; 950c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 951c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 952c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 953c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (cdb[2] & 0x3f) { 954c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x01: 955c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_rwrecovery(&buf[offset]); 956c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 957c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x08: 958c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_caching(dev, &buf[offset]); 959c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 960c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x0a: 961c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_control(dev, &buf[offset]); 962c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 963c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x3f: 964c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_rwrecovery(&buf[offset]); 965c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length += target_modesense_caching(dev, &buf[offset+length]); 966c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length += target_modesense_control(dev, &buf[offset+length]); 967c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 968c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 969f15ea5780d08e4c96930c0d607d05e480ec588c8Roland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 970f15ea5780d08e4c96930c0d607d05e480ec588c8Roland Dreier cdb[2] & 0x3f, cdb[3]); 97103e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNKNOWN_MODE_PAGE; 97203e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -EINVAL; 973c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 974c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset += length; 975c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 976c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ten) { 977c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset -= 2; 978c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (offset >> 8) & 0xff; 979c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = offset & 0xff; 980c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 981e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 982c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve && 983c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 984c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_write_protect(&buf[3], type); 985c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 986e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) && 987e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0)) 988c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_dpofua(&buf[3], type); 989c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 990c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((offset + 2) > cmd->data_length) 991c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = cmd->data_length; 992c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 993c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } else { 994c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset -= 1; 995c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = offset & 0xff; 996c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 997e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 998c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve && 999c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 1000c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_write_protect(&buf[2], type); 1001c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1002e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) && 1003e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0)) 1004c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_dpofua(&buf[2], type); 1005c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1006c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((offset + 1) > cmd->data_length) 1007c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = cmd->data_length; 1008c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 100905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 101005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover rbuf = transport_kmap_first_data_page(cmd); 1011c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger memcpy(rbuf, buf, offset); 101205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 1013c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1014d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1015d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1016c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1017c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1018c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 10195bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_request_sense(struct se_task *task) 1020c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 10216ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 1022a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = cmd->t_task_cdb; 102305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 1024c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u8 ua_asc = 0, ua_ascq = 0; 102505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int err = 0; 1026c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1027c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cdb[1] & 0x01) { 10286708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("REQUEST_SENSE description emulation not" 1029c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " supported\n"); 103003e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 103103e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 1032c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 103305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 103405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 103505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 10366708bb27bb2703da238f21f516034263348af5beAndy Grover if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { 1037c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1038c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CURRENT ERROR, UNIT ATTENTION 1039c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1040c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = 0x70; 1041c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; 1042c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1043c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure request data length is enough for additional 1044c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * sense data. 1045c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1046c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length <= 18) { 1047c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x00; 104805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover err = -EINVAL; 104905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto end; 1050c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1051c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1052c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The Additional Sense Code (ASC) from the UNIT ATTENTION 1053c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1054c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASC_KEY_OFFSET] = ua_asc; 1055c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq; 1056c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x0A; 1057c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } else { 1058c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1059c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CURRENT ERROR, NO SENSE 1060c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1061c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = 0x70; 1062c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; 1063c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1064c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure request data length is enough for additional 1065c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * sense data. 1066c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1067c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length <= 18) { 1068c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x00; 106905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover err = -EINVAL; 107005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto end; 1071c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1072c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1073c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NO ADDITIONAL SENSE INFORMATION 1074c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1075c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASC_KEY_OFFSET] = 0x00; 1076c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x0A; 1077c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1078c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 107905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Groverend: 108005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 1081d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1082d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1083c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1084c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1085c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1086c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 1087c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support. 1088c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note this is not used for TCM/pSCSI passthrough 1089c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 10905bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_unmap(struct se_task *task) 1091c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1092e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_cmd *cmd = task->task_se_cmd; 10935951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 109405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf, *ptr = NULL; 1095a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = &cmd->t_task_cdb[0]; 1096c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger sector_t lba; 1097c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned int size = cmd->data_length, range; 109805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int ret = 0, offset; 1099c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned short dl, bd_dl; 1100c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11016ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_discard) { 11026ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("UNMAP emulation not supported for: %s\n", 11036ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig dev->transport->name); 110403e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 110503e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 11066ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 11076ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 1108c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* First UNMAP block descriptor starts at 8 byte offset */ 1109c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = 8; 1110c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger size -= 8; 1111c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger dl = get_unaligned_be16(&cdb[0]); 1112c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger bd_dl = get_unaligned_be16(&cdb[2]); 111305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 111405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 111505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 1116c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ptr = &buf[offset]; 11176708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("UNMAP: Sub: %s Using dl: %hu bd_dl: %hu size: %hu" 1118c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " ptr: %p\n", dev->transport->name, dl, bd_dl, size, ptr); 1119c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1120c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger while (size) { 1121c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lba = get_unaligned_be64(&ptr[0]); 1122c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger range = get_unaligned_be32(&ptr[8]); 11236708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("UNMAP: Using lba: %llu and range: %u\n", 1124c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (unsigned long long)lba, range); 1125c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1126c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret = dev->transport->do_discard(dev, lba, range); 1127c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ret < 0) { 11286708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("blkdev_issue_discard() failed: %d\n", 1129c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret); 113005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto err; 1131c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1132c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1133c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ptr += 16; 1134c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger size -= 16; 1135c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1136c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 113705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grovererr: 113805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 1139d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!ret) { 1140d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1141d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1142d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 114305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover return ret; 1144c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1145c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1146c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 1147c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support. 1148c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note this is not used for TCM/pSCSI passthrough 1149c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 11505bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_write_same(struct se_task *task) 1151c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1152e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_cmd *cmd = task->task_se_cmd; 11535951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 1154a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover sector_t range; 1155a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover sector_t lba = cmd->t_task_lba; 11566ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig u32 num_blocks; 1157c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int ret; 11586ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 11596ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_discard) { 11606ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("WRITE_SAME emulation not supported" 11616ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig " for: %s\n", dev->transport->name); 116203e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 116303e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 11646ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 11656ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 11666ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (cmd->t_task_cdb[0] == WRITE_SAME) 11676ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be16(&cmd->t_task_cdb[7]); 11686ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig else if (cmd->t_task_cdb[0] == WRITE_SAME_16) 11696ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be32(&cmd->t_task_cdb[10]); 11706ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig else /* WRITE_SAME_32 via VARIABLE_LENGTH_CMD */ 11716ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be32(&cmd->t_task_cdb[28]); 11726ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 1173dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger /* 1174706d5860969b3b24d65d9a57bd3bb5e4a1419c08Nicholas Bellinger * Use the explicit range when non zero is supplied, otherwise calculate 1175706d5860969b3b24d65d9a57bd3bb5e4a1419c08Nicholas Bellinger * the remaining range based on ->get_blocks() - starting LBA. 1176dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger */ 1177dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger if (num_blocks != 0) 1178dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger range = num_blocks; 1179dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger else 1180dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger range = (dev->transport->get_blocks(dev) - lba); 1181c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11826708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("WRITE_SAME UNMAP: LBA: %llu Range: %llu\n", 1183dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger (unsigned long long)lba, (unsigned long long)range); 1184c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1185c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret = dev->transport->do_discard(dev, lba, range); 1186c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ret < 0) { 11876708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("blkdev_issue_discard() failed for WRITE_SAME\n"); 1188e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return ret; 1189c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1190c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1191d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1192d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1193c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1194c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1195c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11965bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_synchronize_cache(struct se_task *task) 11976ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig{ 11986ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_device *dev = task->task_se_cmd->se_dev; 119903e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger struct se_cmd *cmd = task->task_se_cmd; 12006ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12016ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_sync_cache) { 12026ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("SYNCHRONIZE_CACHE emulation not supported" 12036ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig " for: %s\n", dev->transport->name); 120403e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 120503e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 12066ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 12076ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12086ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig dev->transport->do_sync_cache(task); 12096ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig return 0; 12106ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig} 12116ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12125bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_noop(struct se_task *task) 1213d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig{ 1214d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1215d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1216d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig return 0; 1217d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig} 1218d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig 1219485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig/* 1220485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig * Write a CDB into @cdb that is based on the one the intiator sent us, 1221485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig * but updated to only cover the sectors that the current task handles. 1222485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig */ 1223485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwigvoid target_get_task_cdb(struct se_task *task, unsigned char *cdb) 1224485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig{ 1225485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 1226b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig unsigned int cdb_len = scsi_command_size(cmd->t_task_cdb); 1227485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig 1228b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig memcpy(cdb, cmd->t_task_cdb, cdb_len); 1229485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig if (cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) { 1230b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig unsigned long long lba = task->task_lba; 1231b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig u32 sectors = task->task_sectors; 1232b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig 1233b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig switch (cdb_len) { 1234b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 6: 1235b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 21-bit LBA and 8-bit sectors */ 1236b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[1] = (lba >> 16) & 0x1f; 1237b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[2] = (lba >> 8) & 0xff; 1238b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[3] = lba & 0xff; 1239b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[4] = sectors & 0xff; 1240b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1241b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 10: 1242b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 32-bit LBA and 16-bit sectors */ 1243b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(lba, &cdb[2]); 1244b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be16(sectors, &cdb[7]); 1245b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1246b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 12: 1247b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 32-bit LBA and 32-bit sectors */ 1248b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(lba, &cdb[2]); 1249b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[6]); 1250b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1251b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 16: 1252b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 64-bit LBA and 32-bit sectors */ 1253b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be64(lba, &cdb[2]); 1254b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[10]); 1255b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1256b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 32: 1257b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 64-bit LBA and 32-bit sectors, extended CDB */ 1258b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be64(lba, &cdb[12]); 1259b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[28]); 1260b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1261b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig default: 1262b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig BUG(); 1263b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig } 1264485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig } 1265485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig} 1266485fd0d1e3b8010b538bd0b209f3592acc825677Christoph HellwigEXPORT_SYMBOL(target_get_task_cdb); 1267