target_core_cdb.c revision 95fe1ee41e23fa271416da67483594dde74bc6ca
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 864949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover buf = transport_kmap_data_sg(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 /* 98ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 99ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * 100ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * SPC4 says: 101ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * A RESPONSE DATA FORMAT field set to 2h indicates that the 102ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * standard INQUIRY data is in the format defined in this 103ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * standard. Response data format values less than 2h are 104ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * obsolete. Response data format values greater than 2h are 105ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier * reserved. 106ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier */ 107ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier buf[3] = 2; 108ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier 109ce136176fea522fc8f4c16dcae7e8ed1d890ca39Roland Dreier /* 110c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Enable SCCS and TPGS fields for Emulated ALUA 111c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 112e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) 113c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_fill_alua_data(lun->lun_sep, buf); 114c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 115c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 8) { 116c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 1; /* Set additional length to 1 */ 11705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto out; 118c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 119c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 120c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x32; /* Sync=1 and CmdQue=1 */ 121c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 122c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 123c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Do not include vendor, product, reversion info in INQUIRY 124c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * response payload for cdbs with a small allocation length. 125c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 126c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 36) { 127c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 3; /* Set additional length to 3 */ 12805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto out; 129c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 130c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1318359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel snprintf(&buf[8], 8, "LIO-ORG"); 1328359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel snprintf(&buf[16], 16, "%s", dev->se_sub_dev->t10_wwn.model); 1338359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel snprintf(&buf[32], 4, "%s", dev->se_sub_dev->t10_wwn.revision); 134c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 31; /* Set additional length to 31 */ 13505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 13605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Groverout: 1374949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover transport_kunmap_data_sg(cmd); 138c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 139c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 140c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 141c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* unit serial number */ 142c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 143c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 144c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1455951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 146c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 len = 0; 147c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 148c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (dev->se_sub_dev->su_dev_flags & 149c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SDF_EMULATED_VPD_UNIT_SERIAL) { 150c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 unit_serial_len; 151c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1528359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel unit_serial_len = strlen(dev->se_sub_dev->t10_wwn.unit_serial); 153c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len++; /* For NULL Terminator */ 154c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 155c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + unit_serial_len) > cmd->data_length) { 156c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += unit_serial_len; 157c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = ((len >> 8) & 0xff); 158c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (len & 0xff); 159c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 160c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1618359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel len += sprintf(&buf[4], "%s", 1628359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel dev->se_sub_dev->t10_wwn.unit_serial); 163c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len++; /* Extra Byte for NULL Terminator */ 164c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = len; 165c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 166c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 167c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 168c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 169784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellingerstatic void 170b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenkotarget_parse_naa_6h_vendor_specific(struct se_device *dev, unsigned char *buf) 171784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger{ 172784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger unsigned char *p = &dev->se_sub_dev->t10_wwn.unit_serial[0]; 173b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko int cnt; 174b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko bool next = true; 175b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 176784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger /* 177784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 178784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 179784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 180784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 181784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 182784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * per device uniqeness. 183784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger */ 184b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko for (cnt = 0; *p && cnt < 13; p++) { 185b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko int val = hex_to_bin(*p); 186b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 187b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko if (val < 0) 188784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger continue; 189b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 190b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko if (next) { 191b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko next = false; 192b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko buf[cnt++] |= val; 193784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } else { 194b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko next = true; 195b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko buf[cnt] = val << 4; 196784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } 197784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } 198784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger} 199784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger 200c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 201c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Device identification VPD, for a complete list of 202c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * DESIGNATOR TYPEs see spc4r17 Table 459. 203c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 204c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 205c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 206c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 2075951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 208e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_lun *lun = cmd->se_lun; 209c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct se_port *port = NULL; 210c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct se_portal_group *tpg = NULL; 211c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 212c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 213c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 214e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover unsigned char *prod = &dev->se_sub_dev->t10_wwn.model[0]; 215c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 prod_len; 216c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 unit_serial_len, off = 0; 217c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 len = 0, id_len; 218c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 219c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off = 4; 220c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 221c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 222c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NAA IEEE Registered Extended Assigned designator format, see 223c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * spc4r17 section 7.7.3.6.5 224c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 225c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * We depend upon a target_core_mod/ConfigFS provided 226c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 227c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * value in order to return the NAA id. 228c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 229c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!(dev->se_sub_dev->su_dev_flags & SDF_EMULATED_VPD_UNIT_SERIAL)) 230c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_t10_vend_desc; 231c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 232c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (off + 20 > cmd->data_length) 233c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_t10_vend_desc; 234c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 235c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* CODE SET == Binary */ 236c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x1; 237c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 238163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == addressed logical unit: 0)b */ 239c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x00; 240c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 241c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier/Designator type == NAA identifier */ 242163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko buf[off++] |= 0x3; 243c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; 244c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 245c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier/Designator length */ 246c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x10; 247c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 248c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 249c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Start NAA IEEE Registered Extended Identifier/Designator 250c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 251c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (0x6 << 4); 252c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 253c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 254c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Use OpenFabrics IEEE Company ID: 00 14 05 255c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 256c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x01; 257c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x40; 258c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = (0x5 << 4); 259c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 260c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 261c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Return ConfigFS Unit Serial Number information for 262c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * VENDOR_SPECIFIC_IDENTIFIER and 263c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION 264c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 265784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger target_parse_naa_6h_vendor_specific(dev, &buf[off]); 26611650b859681e03fdbf26277fcfc5f1f62186703Andy Shevchenko 267c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len = 20; 268c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off = (len + 4); 269c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 270c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_t10_vend_desc: 271c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 272c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 273c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 274c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger id_len = 8; /* For Vendor field */ 275c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len = 4; /* For VPD Header */ 276c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len += 8; /* For Vendor field */ 277c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len += strlen(prod); 278c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len++; /* For : */ 279c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 280c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (dev->se_sub_dev->su_dev_flags & 281c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SDF_EMULATED_VPD_UNIT_SERIAL) { 282c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len = 283e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover strlen(&dev->se_sub_dev->t10_wwn.unit_serial[0]); 284c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len++; /* For NULL Terminator */ 285c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 286c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((len + (id_len + 4) + 287c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (prod_len + unit_serial_len)) > 288c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length) { 289c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (prod_len + unit_serial_len); 290c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_port; 291c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 2928359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel id_len += sprintf(&buf[off+12], "%s:%s", prod, 293e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover &dev->se_sub_dev->t10_wwn.unit_serial[0]); 294c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 295c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x2; /* ASCII */ 296c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+1] = 0x1; /* T10 Vendor ID */ 297c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+2] = 0x0; 2988359cf43b9dccddeebb0d247146719a14ce6371aJörn Engel memcpy(&buf[off+4], "LIO-ORG", 8); 299c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Extra Byte for NULL Terminator */ 300c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger id_len++; 301c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier Length */ 302c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+3] = id_len; 303c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size for Designation descriptor */ 304c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (id_len + 4); 305c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += (id_len + 4); 306c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 307c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD 308c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 309c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_port: 310c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger port = lun->lun_sep; 311c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (port) { 312c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_lu_gp *lu_gp; 313c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 padding, scsi_name_len; 314c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 lu_gp_id = 0; 315c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 tg_pt_gp_id = 0; 316c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 tpgt; 317c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 318c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tpg = port->sep_tpg; 319c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 320c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Relative target port identifer, see spc4r17 321c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.7 322c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 323c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 324c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 325c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 326c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 327c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 328c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_tpgi; 329c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 330c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 331e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 332c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 333c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 334163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 335c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 336c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Relative target port identifer */ 337c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x4; 338c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 339c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 340c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Skip over Obsolete field in RTPI payload 341c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * in Table 472 */ 342c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; 343c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((port->sep_rtpi >> 8) & 0xff); 344c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (port->sep_rtpi & 0xff); 345c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 346c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 347c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Target port group identifier, see spc4r17 348c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.8 349c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 350c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 351c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 352c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 353c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_tpgi: 354e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->t10_alua.alua_type != 355c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SPC3_ALUA_EMULATED) 356c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 357c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 358c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 359c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 360c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 361c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 362c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 363c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!tg_pt_gp_mem) 364c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 365c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 366c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 367c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 3686708bb27bb2703da238f21f516034263348af5beAndy Grover if (!tg_pt_gp) { 369c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 370c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 371c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 372c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 373c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 374c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 375c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 376e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 377c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 378c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 379163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 380c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 381c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Target port group identifier */ 382c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x5; 383c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 384c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 385c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved Field */ 386c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); 387c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (tg_pt_gp_id & 0xff); 388c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 389c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 390c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Logical Unit Group identifier, see spc4r17 391c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.8 392c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 393c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_lu_gp: 394c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 395c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 396c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 397c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 398c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 3996708bb27bb2703da238f21f516034263348af5beAndy Grover if (!lu_gp_mem) 400c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 401c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 402c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 403c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 4046708bb27bb2703da238f21f516034263348af5beAndy Grover if (!lu_gp) { 405c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 406c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 407c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 408c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp_id = lu_gp->lu_gp_id; 409c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 410c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 411c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 412c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Logical Unit Group identifier */ 413c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x6; 414c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 415c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 416c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved Field */ 417c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((lu_gp_id >> 8) & 0xff); 418c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (lu_gp_id & 0xff); 419c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 420c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 421c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * SCSI name string designator, see spc4r17 422c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.11 423c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 424c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 425c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 426c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 427c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_scsi_name: 428e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover scsi_name_len = strlen(tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 429c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */ 430c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 10; 431c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Check for 4-byte padding */ 432c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger padding = ((-scsi_name_len) & 3); 433c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (padding != 0) 434c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += padding; 435c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size + Designation descriptor */ 436c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 4; 437c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 438c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + scsi_name_len) > cmd->data_length) { 439c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += scsi_name_len; 440c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto set_len; 441c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 442c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 443e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 444c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 445c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 446163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 447c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 448c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == SCSI name string */ 449c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x8; 450c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved and length */ 451c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 452c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * SCSI name string identifer containing, $FABRIC_MOD 453c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * dependent information. For LIO-Target and iSCSI 454c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 455c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * UTF-8 encoding. 456c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 457e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 458c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 459e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 460c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 1 /* Include NULL terminator */; 461c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 462c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The null-terminated, null-padded (see 4.4.2) SCSI 463c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NAME STRING field contains a UTF-8 format string. 464c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The number of bytes in the SCSI NAME STRING field 465c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * (i.e., the value in the DESIGNATOR LENGTH field) 466c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * shall be no larger than 256 and shall be a multiple 467c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * of four. 468c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 469c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (padding) 470c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += padding; 471c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 472c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off-1] = scsi_name_len; 473c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += scsi_name_len; 474c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size + Designation descriptor */ 475c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (scsi_name_len + 4); 476c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 477c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerset_len: 478c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = ((len >> 8) & 0xff); 479c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ 480c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 481c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 482c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 483c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Extended INQUIRY Data VPD Page */ 484c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 485c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 486c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 487c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 60) 488c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 489c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 4901289a0571c037b4757f60597d646aedb70361ec3Roland Dreier buf[3] = 0x3c; 491c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Set HEADSUP, ORDSUP, SIMPSUP */ 492c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x07; 493c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 494c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* If WriteCache emulation is enabled, set V_SUP */ 4955951146dea1ac8ff2f177477c907084d63913cadAndy Grover if (cmd->se_dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) 496c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[6] = 0x01; 497c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 498c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 499c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 500c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Block Limits VPD page */ 501c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 502c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 503c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 5045951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 505c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int have_tp = 0; 506c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 507c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 508c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Following sbc3r22 section 6.5.3 Block Limits VPD page, when 509c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * emulate_tpu=1 or emulate_tpws=1 we will be expect a 510c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * different page length for Thin Provisioning. 511c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 512e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 513c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger have_tp = 1; 514c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 515c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < (0x10 + 4)) { 5166708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("Received data_length: %u" 517c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD 0xb0\n", 518c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length); 519e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 520c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 521c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 522c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (have_tp && cmd->data_length < (0x3c + 4)) { 5236708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("Received data_length: %u" 524c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for TPE=1 EVPD 0xb0\n", 525c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length); 526c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger have_tp = 0; 527c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 528c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 529c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 530c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = have_tp ? 0x3c : 0x10; 531c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 5326708bb27bb2703da238f21f516034263348af5beAndy Grover /* Set WSNZ to 1 */ 5336708bb27bb2703da238f21f516034263348af5beAndy Grover buf[4] = 0x01; 5346708bb27bb2703da238f21f516034263348af5beAndy Grover 535c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 536c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL TRANSFER LENGTH GRANULARITY 537c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 538c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be16(1, &buf[6]); 539c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 540c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 541c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM TRANSFER LENGTH 542c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 543e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_sectors, &buf[8]); 544c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 545c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 546c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL TRANSFER LENGTH 547c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 548e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.optimal_sectors, &buf[12]); 549c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 550c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 551c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Exit now if we don't support TP or the initiator sent a too 552c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * short buffer. 553c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 554c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!have_tp || cmd->data_length < (0x3c + 4)) 555c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 556c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 557c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 558c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM UNMAP LBA COUNT 559c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 560e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count, &buf[20]); 561c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 562c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 563c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 564c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 565e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count, 566c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger &buf[24]); 567c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 568c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 569c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL UNMAP GRANULARITY 570c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 571e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity, &buf[28]); 572c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 573c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 574c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * UNMAP GRANULARITY ALIGNMENT 575c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 576e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment, 577c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger &buf[32]); 578e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment != 0) 579c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[32] |= 0x80; /* Set the UGAVALID bit */ 580c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 581c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 582c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 583c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 584e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier/* Block Device Characteristics VPD page */ 585e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreierstatic int 586e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreiertarget_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 587e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier{ 588e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier struct se_device *dev = cmd->se_dev; 589e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 590e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[0] = dev->transport->get_device_type(dev); 591e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[3] = 0x3c; 592e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 593e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier if (cmd->data_length >= 5 && 594e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier dev->se_sub_dev->se_dev_attrib.is_nonrot) 595e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[5] = 1; 596e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 597e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier return 0; 598e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier} 599e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 600c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Thin Provisioning VPD */ 601c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 602c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 603c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 6045951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 605c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 606c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 607c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From sbc3r22 section 6.5.4 Thin Provisioning VPD page: 608c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 609c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 610c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * zero, then the page length shall be set to 0004h. If the DP bit 611c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * is set to one, then the page length shall be set to the value 612c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * defined in table 162. 613c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 614c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 615c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 616c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 617c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set Hardcoded length mentioned above for DP=0 618c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 619c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be16(0x0004, &buf[2]); 620c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 621c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 622c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The THRESHOLD EXPONENT field indicates the threshold set size in 623c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * LBAs as a power of 2 (i.e., the threshold set size is equal to 624c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 2(threshold exponent)). 625c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 626c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note that this is currently set to 0x00 as mkp says it will be 627c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * changing again. We can enable this once it has settled in T10 628c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and is actually used by Linux/SCSI ML code. 629c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 630c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 0x00; 631c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 632c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 633c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPU bit set to one indicates that the device server supports 634c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * the UNMAP command (see 5.25). A TPU bit set to zero indicates 635c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * that the device server does not support the UNMAP command. 636c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 637e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu != 0) 638c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x80; 639c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 640c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 641c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPWS bit set to one indicates that the device server supports 642c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 643c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPWS bit set to zero indicates that the device server does not 644c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * support the use of the WRITE SAME (16) command to unmap LBAs. 645c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 646e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpws != 0) 647c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] |= 0x40; 648c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 649c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 650c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 651c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 652c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 653b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreiertarget_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 654b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 655b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreierstatic struct { 656b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier uint8_t page; 657b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier int (*emulate)(struct se_cmd *, unsigned char *); 658b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier} evpd_handlers[] = { 659b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x00, .emulate = target_emulate_evpd_00 }, 660b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x80, .emulate = target_emulate_evpd_80 }, 661b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x83, .emulate = target_emulate_evpd_83 }, 662b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x86, .emulate = target_emulate_evpd_86 }, 663b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0xb0, .emulate = target_emulate_evpd_b0 }, 664e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier { .page = 0xb1, .emulate = target_emulate_evpd_b1 }, 665b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0xb2, .emulate = target_emulate_evpd_b2 }, 666b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier}; 667b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 668b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier/* supported vital product data pages */ 669b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreierstatic int 670b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreiertarget_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 671b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier{ 672b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier int p; 673b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 674b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cmd->data_length < 8) 675b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier return 0; 676b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier /* 677b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * Only report the INQUIRY EVPD=1 pages after a valid NAA 678b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * Registered Extended LUN WWN has been set via ConfigFS 679b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * during device creation/restart. 680b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier */ 681b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cmd->se_dev->se_sub_dev->su_dev_flags & 682b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier SDF_EMULATED_VPD_UNIT_SERIAL) { 683b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[3] = ARRAY_SIZE(evpd_handlers); 684b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier for (p = 0; p < min_t(int, ARRAY_SIZE(evpd_handlers), 685b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier cmd->data_length - 4); ++p) 686b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[p + 4] = evpd_handlers[p].page; 687b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier } 688b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 689b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier return 0; 690b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier} 691b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 6925bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_inquiry(struct se_task *task) 693c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 6946ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 6955951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 69605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 697a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = cmd->t_task_cdb; 69805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int p, ret; 699c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 700d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!(cdb[1] & 0x1)) { 701bf0053550aebe56f3bb5dd793e9de69238b5b945Roland Dreier if (cdb[2]) { 702bf0053550aebe56f3bb5dd793e9de69238b5b945Roland Dreier pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", 703bf0053550aebe56f3bb5dd793e9de69238b5b945Roland Dreier cdb[2]); 704bf0053550aebe56f3bb5dd793e9de69238b5b945Roland Dreier cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 705bf0053550aebe56f3bb5dd793e9de69238b5b945Roland Dreier return -EINVAL; 706bf0053550aebe56f3bb5dd793e9de69238b5b945Roland Dreier } 707bf0053550aebe56f3bb5dd793e9de69238b5b945Roland Dreier 708d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig ret = target_emulate_inquiry_std(cmd); 709d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig goto out; 710d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 711c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 712c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 713c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure we at least have 4 bytes of INQUIRY response 714c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload for 0x00 going back for EVPD=1. Note that 0x80 715c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and 0x83 will check for enough payload data length and 716c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * jump to set_len: label when there is not enough inquiry EVPD 717c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload length left for the next outgoing EVPD metadata 718c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 719c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 4) { 7206708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("SCSI Inquiry payload length: %u" 721c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD=1\n", cmd->data_length); 72203e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 723e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 724c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 72505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 7264949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover buf = transport_kmap_data_sg(cmd); 72705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 728c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 729c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 730d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 731b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cdb[2] == evpd_handlers[p].page) { 732b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[1] = cdb[2]; 73305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover ret = evpd_handlers[p].emulate(cmd, buf); 734d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig goto out_unmap; 735b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier } 736d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 737c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7386708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 739bb1acb2ee038a6c13ee99e0b9fb44dacb4a9de84Roland Dreier cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 740d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig ret = -EINVAL; 741d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig 742d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwigout_unmap: 7434949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover transport_kunmap_data_sg(cmd); 744d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwigout: 745d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!ret) { 746d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 747d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 748d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 749d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig return ret; 750c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 751c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7525bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_readcapacity(struct se_task *task) 753c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 7546ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 7555951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 75605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 757904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger unsigned long long blocks_long = dev->transport->get_blocks(dev); 758904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger u32 blocks; 759904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger 760904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger if (blocks_long >= 0x00000000ffffffff) 761904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger blocks = 0xffffffff; 762904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger else 763904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger blocks = (u32)blocks_long; 764c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7654949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover buf = transport_kmap_data_sg(cmd); 76605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 767c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (blocks >> 24) & 0xff; 768c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = (blocks >> 16) & 0xff; 769c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = (blocks >> 8) & 0xff; 770c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = blocks & 0xff; 771e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[4] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff; 772e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[5] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff; 773e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[6] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff; 774e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[7] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff; 775c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 776c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set max 32-bit blocks to signal SERVICE ACTION READ_CAPACITY_16 777c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 778e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 779c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be32(0xFFFFFFFF, &buf[0]); 780c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7814949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover transport_kunmap_data_sg(cmd); 78205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 783d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 784d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 785c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 786c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 787c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7885bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_readcapacity_16(struct se_task *task) 789c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 7906ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 7915951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 79205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 793c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned long long blocks = dev->transport->get_blocks(dev); 794c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7954949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover buf = transport_kmap_data_sg(cmd); 79605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 797c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (blocks >> 56) & 0xff; 798c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = (blocks >> 48) & 0xff; 799c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = (blocks >> 40) & 0xff; 800c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (blocks >> 32) & 0xff; 801c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = (blocks >> 24) & 0xff; 802c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = (blocks >> 16) & 0xff; 803c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[6] = (blocks >> 8) & 0xff; 804c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = blocks & 0xff; 805e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[8] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff; 806e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[9] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff; 807e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[10] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff; 808e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[11] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff; 809c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 810c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set Thin Provisioning Enable bit following sbc3r22 in section 811c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * READ CAPACITY (16) byte 14 if emulate_tpu or emulate_tpws is enabled. 812c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 813e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 814c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[14] = 0x80; 815c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 8164949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover transport_kunmap_data_sg(cmd); 81705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 818d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 819d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 820c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 821c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 822c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 823c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 824c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_rwrecovery(unsigned char *p) 825c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 826c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x01; 827c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x0a; 828c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 829c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 12; 830c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 831c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 832c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 833c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_control(struct se_device *dev, unsigned char *p) 834c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 835c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x0a; 836c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x0a; 837c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[2] = 2; 838c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 8395de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * From spc4r23, 7.4.7 Control mode page 8405de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8415de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 8425de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * restrictions on the algorithm used for reordering commands 8435de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * having the SIMPLE task attribute (see SAM-4). 8445de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8455de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * Table 368 -- QUEUE ALGORITHM MODIFIER field 8465de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * Code Description 8475de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 0h Restricted reordering 8485de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 1h Unrestricted reordering allowed 8495de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 2h to 7h Reserved 8505de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8h to Fh Vendor specific 8515de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8525de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 8535de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * the device server shall order the processing sequence of commands 8545de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * having the SIMPLE task attribute such that data integrity is maintained 8555de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 8565de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * requests is halted at any time, the final value of all data observable 8575de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * on the medium shall be the same as if all the commands had been processed 8585de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * with the ORDERED task attribute). 8595de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8605de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 8615de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * device server may reorder the processing sequence of commands having the 8625de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * SIMPLE task attribute in any manner. Any data integrity exposures related to 8635de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * command sequence order shall be explicitly handled by the application client 8645de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * through the selection of appropriate ommands and task attributes. 8655de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger */ 8665de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger p[3] = (dev->se_sub_dev->se_dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 8675de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger /* 868c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From spc4r17, section 7.4.6 Control mode Page 869c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 870c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 871c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 872c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 00b: The logical unit shall clear any unit attention condition 873c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 874c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall not establish a unit attention condition when a com- 875c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 876c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status. 877c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 878c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 10b: The logical unit shall not clear any unit attention condition 879c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 880c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall not establish a unit attention condition when 881c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * a command is completed with BUSY, TASK SET FULL, or RESERVATION 882c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CONFLICT status. 883c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 884c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 11b a The logical unit shall not clear any unit attention condition 885c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 886c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall establish a unit attention condition for the 887c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * initiator port associated with the I_T nexus on which the BUSY, 888c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 889c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Depending on the status, the additional sense code shall be set to 890c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 891c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 892c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * command, a unit attention condition shall be established only once 893c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 894c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * to the number of commands completed with one of those status codes. 895c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 896e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover p[4] = (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : 897e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; 898c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 899c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From spc4r17, section 7.4.6 Control mode Page 900c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 901c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Task Aborted Status (TAS) bit set to zero. 902c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 903c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A task aborted status (TAS) bit set to zero specifies that aborted 904c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * tasks shall be terminated by the device server without any response 905c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * to the application client. A TAS bit set to one specifies that tasks 906c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * aborted by the actions of an I_T nexus other than the I_T nexus on 907c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * which the command was received shall be completed with TASK ABORTED 908c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status (see SAM-4). 909c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 910e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover p[5] = (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? 0x40 : 0x00; 911c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[8] = 0xff; 912c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[9] = 0xff; 913c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[11] = 30; 914c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 915c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 12; 916c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 917c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 918c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 919c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_caching(struct se_device *dev, unsigned char *p) 920c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 921c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x08; 922c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x12; 923e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) 924c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[2] = 0x04; /* Write Cache Enable */ 925c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[12] = 0x20; /* Disabled Read Ahead */ 926c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 927c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 20; 928c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 929c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 930c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 931c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_write_protect(unsigned char *buf, int type) 932c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 933c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 934c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * I believe that the WP bit (bit 7) in the mode header is the same for 935c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * all device types.. 936c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 937c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (type) { 938c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_DISK: 939c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_TAPE: 940c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 941c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] |= 0x80; /* WP bit */ 942c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 943c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 944c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 945c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 946c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 947c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_dpofua(unsigned char *buf, int type) 948c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 949c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (type) { 950c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_DISK: 951c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] |= 0x10; /* DPOFUA bit */ 952c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 953c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 954c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 955c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 956c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 957c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 9585bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_modesense(struct se_task *task) 959c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 9606ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 9615951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 962a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover char *cdb = cmd->t_task_cdb; 96305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *rbuf; 964c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int type = dev->transport->get_device_type(dev); 9656ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 9666ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig int offset = ten ? 8 : 4; 967c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int length = 0; 968c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF]; 969c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 970c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 971c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 972c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (cdb[2] & 0x3f) { 973c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x01: 974c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_rwrecovery(&buf[offset]); 975c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 976c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x08: 977c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_caching(dev, &buf[offset]); 978c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 979c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x0a: 980c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_control(dev, &buf[offset]); 981c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 982c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x3f: 983c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_rwrecovery(&buf[offset]); 984c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length += target_modesense_caching(dev, &buf[offset+length]); 985c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length += target_modesense_control(dev, &buf[offset+length]); 986c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 987c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 988f15ea5780d08e4c96930c0d607d05e480ec588c8Roland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 989f15ea5780d08e4c96930c0d607d05e480ec588c8Roland Dreier cdb[2] & 0x3f, cdb[3]); 99003e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNKNOWN_MODE_PAGE; 99103e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -EINVAL; 992c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 993c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset += length; 994c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 995c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ten) { 996c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset -= 2; 997c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (offset >> 8) & 0xff; 998c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = offset & 0xff; 999c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1000e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 1001c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve && 1002c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 1003c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_write_protect(&buf[3], type); 1004c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1005e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) && 1006e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0)) 1007c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_dpofua(&buf[3], type); 1008c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1009c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((offset + 2) > cmd->data_length) 1010c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = cmd->data_length; 1011c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1012c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } else { 1013c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset -= 1; 1014c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = offset & 0xff; 1015c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1016e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 1017c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve && 1018c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 1019c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_write_protect(&buf[2], type); 1020c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1021e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) && 1022e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0)) 1023c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_dpofua(&buf[2], type); 1024c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1025c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((offset + 1) > cmd->data_length) 1026c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = cmd->data_length; 1027c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 102805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 10294949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover rbuf = transport_kmap_data_sg(cmd); 1030c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger memcpy(rbuf, buf, offset); 10314949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover transport_kunmap_data_sg(cmd); 1032c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1033d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1034d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1035c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1036c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1037c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 10385bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_request_sense(struct se_task *task) 1039c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 10406ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 1041a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = cmd->t_task_cdb; 104205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 1043c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u8 ua_asc = 0, ua_ascq = 0; 104405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int err = 0; 1045c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1046c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cdb[1] & 0x01) { 10476708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("REQUEST_SENSE description emulation not" 1048c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " supported\n"); 104903e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 105003e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 1051c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 105205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 10534949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover buf = transport_kmap_data_sg(cmd); 105405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 10556708bb27bb2703da238f21f516034263348af5beAndy Grover if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { 1056c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1057c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CURRENT ERROR, UNIT ATTENTION 1058c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1059c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = 0x70; 1060c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; 106195fe1ee41e23fa271416da67483594dde74bc6caSebastian Andrzej Siewior 106295fe1ee41e23fa271416da67483594dde74bc6caSebastian Andrzej Siewior if (cmd->data_length < 18) { 1063c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x00; 106405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover err = -EINVAL; 106505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto end; 1066c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1067c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1068c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The Additional Sense Code (ASC) from the UNIT ATTENTION 1069c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1070c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASC_KEY_OFFSET] = ua_asc; 1071c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq; 1072c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x0A; 1073c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } else { 1074c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1075c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CURRENT ERROR, NO SENSE 1076c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1077c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = 0x70; 1078c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; 107995fe1ee41e23fa271416da67483594dde74bc6caSebastian Andrzej Siewior 108095fe1ee41e23fa271416da67483594dde74bc6caSebastian Andrzej Siewior if (cmd->data_length < 18) { 1081c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x00; 108205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover err = -EINVAL; 108305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto end; 1084c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1085c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1086c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NO ADDITIONAL SENSE INFORMATION 1087c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1088c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASC_KEY_OFFSET] = 0x00; 1089c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x0A; 1090c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1091c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 109205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Groverend: 10934949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover transport_kunmap_data_sg(cmd); 1094d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1095d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1096c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1097c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1098c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1099c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 1100c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support. 1101c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note this is not used for TCM/pSCSI passthrough 1102c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 11035bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_unmap(struct se_task *task) 1104c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1105e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_cmd *cmd = task->task_se_cmd; 11065951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 110705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf, *ptr = NULL; 1108a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = &cmd->t_task_cdb[0]; 1109c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger sector_t lba; 1110c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned int size = cmd->data_length, range; 111105d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int ret = 0, offset; 1112c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned short dl, bd_dl; 1113c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11146ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_discard) { 11156ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("UNMAP emulation not supported for: %s\n", 11166ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig dev->transport->name); 111703e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 111803e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 11196ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 11206ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 1121c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* First UNMAP block descriptor starts at 8 byte offset */ 1122c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = 8; 1123c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger size -= 8; 1124c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger dl = get_unaligned_be16(&cdb[0]); 1125c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger bd_dl = get_unaligned_be16(&cdb[2]); 112605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 11274949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover buf = transport_kmap_data_sg(cmd); 112805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 1129c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ptr = &buf[offset]; 11306708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("UNMAP: Sub: %s Using dl: %hu bd_dl: %hu size: %hu" 1131c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " ptr: %p\n", dev->transport->name, dl, bd_dl, size, ptr); 1132c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1133c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger while (size) { 1134c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lba = get_unaligned_be64(&ptr[0]); 1135c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger range = get_unaligned_be32(&ptr[8]); 11366708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("UNMAP: Using lba: %llu and range: %u\n", 1137c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (unsigned long long)lba, range); 1138c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1139c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret = dev->transport->do_discard(dev, lba, range); 1140c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ret < 0) { 11416708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("blkdev_issue_discard() failed: %d\n", 1142c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret); 114305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto err; 1144c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1145c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1146c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ptr += 16; 1147c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger size -= 16; 1148c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1149c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 115005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grovererr: 11514949314c7283ea4f9ade182ca599583b89f7edd6Andy Grover transport_kunmap_data_sg(cmd); 1152d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!ret) { 1153d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1154d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1155d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 115605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover return ret; 1157c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1158c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1159c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 1160c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support. 1161c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note this is not used for TCM/pSCSI passthrough 1162c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 11635bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_write_same(struct se_task *task) 1164c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1165e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_cmd *cmd = task->task_se_cmd; 11665951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 1167a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover sector_t range; 1168a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover sector_t lba = cmd->t_task_lba; 11696ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig u32 num_blocks; 1170c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int ret; 11716ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 11726ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_discard) { 11736ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("WRITE_SAME emulation not supported" 11746ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig " for: %s\n", dev->transport->name); 117503e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 117603e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 11776ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 11786ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 11796ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (cmd->t_task_cdb[0] == WRITE_SAME) 11806ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be16(&cmd->t_task_cdb[7]); 11816ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig else if (cmd->t_task_cdb[0] == WRITE_SAME_16) 11826ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be32(&cmd->t_task_cdb[10]); 11836ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig else /* WRITE_SAME_32 via VARIABLE_LENGTH_CMD */ 11846ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be32(&cmd->t_task_cdb[28]); 11856ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 1186dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger /* 1187706d5860969b3b24d65d9a57bd3bb5e4a1419c08Nicholas Bellinger * Use the explicit range when non zero is supplied, otherwise calculate 1188706d5860969b3b24d65d9a57bd3bb5e4a1419c08Nicholas Bellinger * the remaining range based on ->get_blocks() - starting LBA. 1189dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger */ 1190dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger if (num_blocks != 0) 1191dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger range = num_blocks; 1192dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger else 1193dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger range = (dev->transport->get_blocks(dev) - lba); 1194c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11956708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("WRITE_SAME UNMAP: LBA: %llu Range: %llu\n", 1196dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger (unsigned long long)lba, (unsigned long long)range); 1197c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1198c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret = dev->transport->do_discard(dev, lba, range); 1199c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ret < 0) { 12006708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("blkdev_issue_discard() failed for WRITE_SAME\n"); 1201e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return ret; 1202c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1203c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1204d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1205d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1206c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1207c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1208c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 12095bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_synchronize_cache(struct se_task *task) 12106ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig{ 12116ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_device *dev = task->task_se_cmd->se_dev; 121203e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger struct se_cmd *cmd = task->task_se_cmd; 12136ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12146ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_sync_cache) { 12156ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("SYNCHRONIZE_CACHE emulation not supported" 12166ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig " for: %s\n", dev->transport->name); 121703e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 121803e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 12196ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 12206ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12216ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig dev->transport->do_sync_cache(task); 12226ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig return 0; 12236ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig} 12246ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12255bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_noop(struct se_task *task) 1226d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig{ 1227d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1228d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1229d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig return 0; 1230d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig} 1231d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig 1232485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig/* 1233485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig * Write a CDB into @cdb that is based on the one the intiator sent us, 1234485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig * but updated to only cover the sectors that the current task handles. 1235485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig */ 1236485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwigvoid target_get_task_cdb(struct se_task *task, unsigned char *cdb) 1237485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig{ 1238485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 1239b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig unsigned int cdb_len = scsi_command_size(cmd->t_task_cdb); 1240485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig 1241b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig memcpy(cdb, cmd->t_task_cdb, cdb_len); 1242485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig if (cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) { 1243b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig unsigned long long lba = task->task_lba; 1244b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig u32 sectors = task->task_sectors; 1245b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig 1246b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig switch (cdb_len) { 1247b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 6: 1248b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 21-bit LBA and 8-bit sectors */ 1249b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[1] = (lba >> 16) & 0x1f; 1250b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[2] = (lba >> 8) & 0xff; 1251b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[3] = lba & 0xff; 1252b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[4] = sectors & 0xff; 1253b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1254b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 10: 1255b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 32-bit LBA and 16-bit sectors */ 1256b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(lba, &cdb[2]); 1257b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be16(sectors, &cdb[7]); 1258b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1259b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 12: 1260b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 32-bit LBA and 32-bit sectors */ 1261b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(lba, &cdb[2]); 1262b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[6]); 1263b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1264b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 16: 1265b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 64-bit LBA and 32-bit sectors */ 1266b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be64(lba, &cdb[2]); 1267b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[10]); 1268b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1269b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 32: 1270b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 64-bit LBA and 32-bit sectors, extended CDB */ 1271b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be64(lba, &cdb[12]); 1272b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[28]); 1273b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1274b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig default: 1275b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig BUG(); 1276b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig } 1277485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig } 1278485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig} 1279485fd0d1e3b8010b538bd0b209f3592acc825677Christoph HellwigEXPORT_SYMBOL(target_get_task_cdb); 1280