target_core_cdb.c revision 1289a0571c037b4757f60597d646aedb70361ec3
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> 32c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger#include <target/target_core_transport.h> 33c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger#include <target/target_core_fabric_ops.h> 34c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger#include "target_core_ua.h" 355bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwig#include "target_core_cdb.h" 36c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 37c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 38c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_fill_alua_data(struct se_port *port, unsigned char *buf) 39c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 40c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 41c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 42c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 43c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 44c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS. 45c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 46c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x80; 47c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 48c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 49c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set TPGS field for explict and/or implict ALUA access type 50c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and opteration. 51c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 52c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * See spc4r17 section 6.4.2 Table 135 53c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 54c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!port) 55c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return; 56c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 57c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!tg_pt_gp_mem) 58c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return; 59c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 60c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 61c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 62c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (tg_pt_gp) 63c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; 64c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 65c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 66c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 67c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 68c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_inquiry_std(struct se_cmd *cmd) 69c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 70e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_lun *lun = cmd->se_lun; 715951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 72052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger struct se_portal_group *tpg = lun->lun_sep->sep_tpg; 7305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 74c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 75c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 76c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure we at least have 6 bytes of INQUIRY response 77c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload going back for EVPD=0 78c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 79c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 6) { 806708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("SCSI Inquiry payload length: %u" 81c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD=0\n", cmd->data_length); 82e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 83c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 84c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 8505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 8605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 87052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger if (dev == tpg->tpg_virt_lun0.lun_se_dev) { 88052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger buf[0] = 0x3f; /* Not connected */ 89052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger } else { 90052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 91052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger if (buf[0] == TYPE_TAPE) 92052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger buf[1] = 0x80; 93052605c6caa3e1edf8eee8fe5fe6d53f5721f39aNicholas Bellinger } 94c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = dev->transport->get_device_rev(dev); 95c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 96c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 97c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Enable SCCS and TPGS fields for Emulated ALUA 98c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 99e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) 100c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_fill_alua_data(lun->lun_sep, buf); 101c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 102c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 8) { 103c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 1; /* Set additional length to 1 */ 10405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto out; 105c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 106c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 107c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x32; /* Sync=1 and CmdQue=1 */ 108c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 109c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 110c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Do not include vendor, product, reversion info in INQUIRY 111c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * response payload for cdbs with a small allocation length. 112c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 113c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 36) { 114c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 3; /* Set additional length to 3 */ 11505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto out; 116c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 117c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 118c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger snprintf((unsigned char *)&buf[8], 8, "LIO-ORG"); 119c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger snprintf((unsigned char *)&buf[16], 16, "%s", 120e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover &dev->se_sub_dev->t10_wwn.model[0]); 121c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger snprintf((unsigned char *)&buf[32], 4, "%s", 122e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover &dev->se_sub_dev->t10_wwn.revision[0]); 123c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 31; /* Set additional length to 31 */ 12405d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 12505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Groverout: 12605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 127c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 128c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 129c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 130c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* unit serial number */ 131c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 132c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 133c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1345951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 135c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 len = 0; 136c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 137c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (dev->se_sub_dev->su_dev_flags & 138c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SDF_EMULATED_VPD_UNIT_SERIAL) { 139c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 unit_serial_len; 140c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 141c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len = 142e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover strlen(&dev->se_sub_dev->t10_wwn.unit_serial[0]); 143c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len++; /* For NULL Terminator */ 144c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 145c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + unit_serial_len) > cmd->data_length) { 146c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += unit_serial_len; 147c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = ((len >> 8) & 0xff); 148c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (len & 0xff); 149c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 150c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 151c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += sprintf((unsigned char *)&buf[4], "%s", 152e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover &dev->se_sub_dev->t10_wwn.unit_serial[0]); 153c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len++; /* Extra Byte for NULL Terminator */ 154c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = len; 155c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 156c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 157c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 158c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 159784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellingerstatic void 160b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenkotarget_parse_naa_6h_vendor_specific(struct se_device *dev, unsigned char *buf) 161784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger{ 162784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger unsigned char *p = &dev->se_sub_dev->t10_wwn.unit_serial[0]; 163b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko int cnt; 164b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko bool next = true; 165b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 166784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger /* 167784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 168784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 169784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 170784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 171784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 172784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger * per device uniqeness. 173784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger */ 174b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko for (cnt = 0; *p && cnt < 13; p++) { 175b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko int val = hex_to_bin(*p); 176b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 177b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko if (val < 0) 178784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger continue; 179b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko 180b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko if (next) { 181b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko next = false; 182b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko buf[cnt++] |= val; 183784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } else { 184b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko next = true; 185b6b4e61ff4e26d6721b2607ea23402825a38c402Andy Shevchenko buf[cnt] = val << 4; 186784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } 187784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger } 188784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger} 189784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger 190c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 191c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Device identification VPD, for a complete list of 192c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * DESIGNATOR TYPEs see spc4r17 Table 459. 193c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 194c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 195c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 196c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1975951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 198e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_lun *lun = cmd->se_lun; 199c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct se_port *port = NULL; 200c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct se_portal_group *tpg = NULL; 201c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 202c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 203c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 204e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover unsigned char *prod = &dev->se_sub_dev->t10_wwn.model[0]; 205c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 prod_len; 206c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 unit_serial_len, off = 0; 207c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 len = 0, id_len; 208c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 209c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off = 4; 210c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 211c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 212c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NAA IEEE Registered Extended Assigned designator format, see 213c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * spc4r17 section 7.7.3.6.5 214c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 215c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * We depend upon a target_core_mod/ConfigFS provided 216c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 217c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * value in order to return the NAA id. 218c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 219c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!(dev->se_sub_dev->su_dev_flags & SDF_EMULATED_VPD_UNIT_SERIAL)) 220c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_t10_vend_desc; 221c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 222c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (off + 20 > cmd->data_length) 223c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_t10_vend_desc; 224c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 225c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* CODE SET == Binary */ 226c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x1; 227c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 228163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == addressed logical unit: 0)b */ 229c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x00; 230c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 231c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier/Designator type == NAA identifier */ 232163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko buf[off++] |= 0x3; 233c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; 234c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 235c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier/Designator length */ 236c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x10; 237c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 238c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 239c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Start NAA IEEE Registered Extended Identifier/Designator 240c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 241c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (0x6 << 4); 242c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 243c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 244c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Use OpenFabrics IEEE Company ID: 00 14 05 245c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 246c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x01; 247c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 0x40; 248c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = (0x5 << 4); 249c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 250c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 251c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Return ConfigFS Unit Serial Number information for 252c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * VENDOR_SPECIFIC_IDENTIFIER and 253c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION 254c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 255784eb99ebad91db4c8c231c4b17f203147ab827bNicholas Bellinger target_parse_naa_6h_vendor_specific(dev, &buf[off]); 25611650b859681e03fdbf26277fcfc5f1f62186703Andy Shevchenko 257c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len = 20; 258c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off = (len + 4); 259c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 260c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_t10_vend_desc: 261c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 262c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 263c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 264c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger id_len = 8; /* For Vendor field */ 265c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len = 4; /* For VPD Header */ 266c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len += 8; /* For Vendor field */ 267c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len += strlen(prod); 268c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger prod_len++; /* For : */ 269c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 270c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (dev->se_sub_dev->su_dev_flags & 271c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SDF_EMULATED_VPD_UNIT_SERIAL) { 272c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len = 273e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover strlen(&dev->se_sub_dev->t10_wwn.unit_serial[0]); 274c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unit_serial_len++; /* For NULL Terminator */ 275c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 276c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((len + (id_len + 4) + 277c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (prod_len + unit_serial_len)) > 278c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length) { 279c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (prod_len + unit_serial_len); 280c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_port; 281c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 282c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger id_len += sprintf((unsigned char *)&buf[off+12], 283c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger "%s:%s", prod, 284e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover &dev->se_sub_dev->t10_wwn.unit_serial[0]); 285c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 286c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x2; /* ASCII */ 287c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+1] = 0x1; /* T10 Vendor ID */ 288c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+2] = 0x0; 289c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger memcpy((unsigned char *)&buf[off+4], "LIO-ORG", 8); 290c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Extra Byte for NULL Terminator */ 291c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger id_len++; 292c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Identifier Length */ 293c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off+3] = id_len; 294c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size for Designation descriptor */ 295c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (id_len + 4); 296c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += (id_len + 4); 297c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 298c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD 299c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 300c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_port: 301c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger port = lun->lun_sep; 302c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (port) { 303c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger struct t10_alua_lu_gp *lu_gp; 304c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u32 padding, scsi_name_len; 305c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 lu_gp_id = 0; 306c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 tg_pt_gp_id = 0; 307c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u16 tpgt; 308c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 309c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tpg = port->sep_tpg; 310c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 311c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Relative target port identifer, see spc4r17 312c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.7 313c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 314c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 315c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 316c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 317c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 318c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 319c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_tpgi; 320c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 321c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 322e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 323c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 324c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 325163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 326c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 327c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Relative target port identifer */ 328c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x4; 329c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 330c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 331c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Skip over Obsolete field in RTPI payload 332c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * in Table 472 */ 333c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; 334c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((port->sep_rtpi >> 8) & 0xff); 335c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (port->sep_rtpi & 0xff); 336c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 337c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 338c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Target port group identifier, see spc4r17 339c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.8 340c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 341c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 342c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 343c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 344c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_tpgi: 345e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->t10_alua.alua_type != 346c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger SPC3_ALUA_EMULATED) 347c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 348c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 349c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 350c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 351c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 352c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 353c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 354c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!tg_pt_gp_mem) 355c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 356c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 357c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 358c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 3596708bb27bb2703da238f21f516034263348af5beAndy Grover if (!tg_pt_gp) { 360c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 361c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_lu_gp; 362c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 363c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 364c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 365c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 366c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 367e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 368c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 369c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 370163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 371c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 372c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Target port group identifier */ 373c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x5; 374c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 375c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 376c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved Field */ 377c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); 378c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (tg_pt_gp_id & 0xff); 379c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 380c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 381c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Logical Unit Group identifier, see spc4r17 382c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.8 383c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 384c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_lu_gp: 385c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + 8) > cmd->data_length) { 386c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; 387c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 388c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 389c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 3906708bb27bb2703da238f21f516034263348af5beAndy Grover if (!lu_gp_mem) 391c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 392c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 393c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 394c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 3956708bb27bb2703da238f21f516034263348af5beAndy Grover if (!lu_gp) { 396c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 397c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto check_scsi_name; 398c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 399c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lu_gp_id = lu_gp->lu_gp_id; 400c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 401c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 402c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x1; /* CODE SET == Binary */ 403c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == Logical Unit Group identifier */ 404c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x6; 405c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off++; /* Skip over Reserved */ 406c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = 4; /* DESIGNATOR LENGTH */ 407c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved Field */ 408c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = ((lu_gp_id >> 8) & 0xff); 409c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] = (lu_gp_id & 0xff); 410c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += 8; /* Header size + Designation descriptor */ 411c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 412c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * SCSI name string designator, see spc4r17 413c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.7.3.11 414c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 415c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Get the PROTOCOL IDENTIFIER as defined by spc4r17 416c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * section 7.5.1 Table 362 417c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 418c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingercheck_scsi_name: 419e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover scsi_name_len = strlen(tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 420c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */ 421c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 10; 422c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Check for 4-byte padding */ 423c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger padding = ((-scsi_name_len) & 3); 424c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (padding != 0) 425c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += padding; 426c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size + Designation descriptor */ 427c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 4; 428c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 429c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (((len + 4) + scsi_name_len) > cmd->data_length) { 430c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += scsi_name_len; 431c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger goto set_len; 432c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 433c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 434e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 435c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 436c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] = 0x80; /* Set PIV=1 */ 437163cd5fa9fcb7ccc73a9e39d5f601cfd41a23bfaAndy Shevchenko /* Set ASSOCIATION == target port: 01b */ 438c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off] |= 0x10; 439c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* DESIGNATOR TYPE == SCSI name string */ 440c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off++] |= 0x8; 441c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += 2; /* Skip over Reserved and length */ 442c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 443c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * SCSI name string identifer containing, $FABRIC_MOD 444c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * dependent information. For LIO-Target and iSCSI 445c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 446c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * UTF-8 encoding. 447c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 448e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 449c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 450e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 451c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += 1 /* Include NULL terminator */; 452c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 453c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The null-terminated, null-padded (see 4.4.2) SCSI 454c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NAME STRING field contains a UTF-8 format string. 455c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The number of bytes in the SCSI NAME STRING field 456c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * (i.e., the value in the DESIGNATOR LENGTH field) 457c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * shall be no larger than 256 and shall be a multiple 458c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * of four. 459c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 460c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (padding) 461c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger scsi_name_len += padding; 462c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 463c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[off-1] = scsi_name_len; 464c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger off += scsi_name_len; 465c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Header size + Designation descriptor */ 466c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger len += (scsi_name_len + 4); 467c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 468c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerset_len: 469c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = ((len >> 8) & 0xff); 470c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ 471c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 472c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 473c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 474c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Extended INQUIRY Data VPD Page */ 475c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 476c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 477c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 478c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 60) 479c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 480c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 4811289a0571c037b4757f60597d646aedb70361ec3Roland Dreier buf[3] = 0x3c; 482c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* Set HEADSUP, ORDSUP, SIMPSUP */ 483c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x07; 484c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 485c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* If WriteCache emulation is enabled, set V_SUP */ 4865951146dea1ac8ff2f177477c907084d63913cadAndy Grover if (cmd->se_dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) 487c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[6] = 0x01; 488c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 489c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 490c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 491c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Block Limits VPD page */ 492c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 493c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 494c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 4955951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 496c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int have_tp = 0; 497c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 498c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 499c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Following sbc3r22 section 6.5.3 Block Limits VPD page, when 500c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * emulate_tpu=1 or emulate_tpws=1 we will be expect a 501c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * different page length for Thin Provisioning. 502c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 503e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 504c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger have_tp = 1; 505c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 506c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < (0x10 + 4)) { 5076708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("Received data_length: %u" 508c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD 0xb0\n", 509c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length); 510e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 511c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 512c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 513c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (have_tp && cmd->data_length < (0x3c + 4)) { 5146708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("Received data_length: %u" 515c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for TPE=1 EVPD 0xb0\n", 516c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger cmd->data_length); 517c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger have_tp = 0; 518c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 519c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 520c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 521c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = have_tp ? 0x3c : 0x10; 522c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 5236708bb27bb2703da238f21f516034263348af5beAndy Grover /* Set WSNZ to 1 */ 5246708bb27bb2703da238f21f516034263348af5beAndy Grover buf[4] = 0x01; 5256708bb27bb2703da238f21f516034263348af5beAndy Grover 526c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 527c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL TRANSFER LENGTH GRANULARITY 528c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 529c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be16(1, &buf[6]); 530c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 531c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 532c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM TRANSFER LENGTH 533c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 534e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_sectors, &buf[8]); 535c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 536c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 537c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL TRANSFER LENGTH 538c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 539e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.optimal_sectors, &buf[12]); 540c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 541c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 542c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Exit now if we don't support TP or the initiator sent a too 543c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * short buffer. 544c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 545c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (!have_tp || cmd->data_length < (0x3c + 4)) 546c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 547c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 548c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 549c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM UNMAP LBA COUNT 550c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 551e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count, &buf[20]); 552c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 553c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 554c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 555c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 556e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count, 557c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger &buf[24]); 558c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 559c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 560c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set OPTIMAL UNMAP GRANULARITY 561c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 562e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity, &buf[28]); 563c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 564c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 565c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * UNMAP GRANULARITY ALIGNMENT 566c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 567e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment, 568c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger &buf[32]); 569e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment != 0) 570c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[32] |= 0x80; /* Set the UGAVALID bit */ 571c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 572c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 573c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 574c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 575e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier/* Block Device Characteristics VPD page */ 576e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreierstatic int 577e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreiertarget_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 578e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier{ 579e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier struct se_device *dev = cmd->se_dev; 580e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 581e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[0] = dev->transport->get_device_type(dev); 582e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[3] = 0x3c; 583e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 584e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier if (cmd->data_length >= 5 && 585e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier dev->se_sub_dev->se_dev_attrib.is_nonrot) 586e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier buf[5] = 1; 587e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 588e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier return 0; 589e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier} 590e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier 591c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* Thin Provisioning VPD */ 592c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 593c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 594c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 5955951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 596c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 597c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 598c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From sbc3r22 section 6.5.4 Thin Provisioning VPD page: 599c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 600c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 601c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * zero, then the page length shall be set to 0004h. If the DP bit 602c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * is set to one, then the page length shall be set to the value 603c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * defined in table 162. 604c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 605c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 606c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 607c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 608c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set Hardcoded length mentioned above for DP=0 609c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 610c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be16(0x0004, &buf[2]); 611c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 612c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 613c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The THRESHOLD EXPONENT field indicates the threshold set size in 614c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * LBAs as a power of 2 (i.e., the threshold set size is equal to 615c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 2(threshold exponent)). 616c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 617c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note that this is currently set to 0x00 as mkp says it will be 618c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * changing again. We can enable this once it has settled in T10 619c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and is actually used by Linux/SCSI ML code. 620c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 621c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = 0x00; 622c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 623c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 624c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPU bit set to one indicates that the device server supports 625c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * the UNMAP command (see 5.25). A TPU bit set to zero indicates 626c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * that the device server does not support the UNMAP command. 627c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 628e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu != 0) 629c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = 0x80; 630c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 631c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 632c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPWS bit set to one indicates that the device server supports 633c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 634c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A TPWS bit set to zero indicates that the device server does not 635c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * support the use of the WRITE SAME (16) command to unmap LBAs. 636c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 637e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpws != 0) 638c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] |= 0x40; 639c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 640c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 641c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 642c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 643c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 644b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreiertarget_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 645b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 646b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreierstatic struct { 647b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier uint8_t page; 648b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier int (*emulate)(struct se_cmd *, unsigned char *); 649b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier} evpd_handlers[] = { 650b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x00, .emulate = target_emulate_evpd_00 }, 651b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x80, .emulate = target_emulate_evpd_80 }, 652b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x83, .emulate = target_emulate_evpd_83 }, 653b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0x86, .emulate = target_emulate_evpd_86 }, 654b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0xb0, .emulate = target_emulate_evpd_b0 }, 655e22a7f075226c51f3f71b922e9eeb4f99fac1475Roland Dreier { .page = 0xb1, .emulate = target_emulate_evpd_b1 }, 656b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier { .page = 0xb2, .emulate = target_emulate_evpd_b2 }, 657b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier}; 658b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 659b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier/* supported vital product data pages */ 660b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreierstatic int 661b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreiertarget_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 662b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier{ 663b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier int p; 664b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 665b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cmd->data_length < 8) 666b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier return 0; 667b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier /* 668b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * Only report the INQUIRY EVPD=1 pages after a valid NAA 669b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * Registered Extended LUN WWN has been set via ConfigFS 670b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier * during device creation/restart. 671b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier */ 672b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cmd->se_dev->se_sub_dev->su_dev_flags & 673b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier SDF_EMULATED_VPD_UNIT_SERIAL) { 674b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[3] = ARRAY_SIZE(evpd_handlers); 675b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier for (p = 0; p < min_t(int, ARRAY_SIZE(evpd_handlers), 676b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier cmd->data_length - 4); ++p) 677b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[p + 4] = evpd_handlers[p].page; 678b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier } 679b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 680b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier return 0; 681b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier} 682b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier 6835bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_inquiry(struct se_task *task) 684c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 6856ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 6865951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 68705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 688a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = cmd->t_task_cdb; 68905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int p, ret; 690c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 691d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!(cdb[1] & 0x1)) { 692d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig ret = target_emulate_inquiry_std(cmd); 693d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig goto out; 694d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 695c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 696c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 697c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure we at least have 4 bytes of INQUIRY response 698c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload for 0x00 going back for EVPD=1. Note that 0x80 699c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * and 0x83 will check for enough payload data length and 700c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * jump to set_len: label when there is not enough inquiry EVPD 701c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * payload length left for the next outgoing EVPD metadata 702c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 703c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length < 4) { 7046708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("SCSI Inquiry payload length: %u" 705c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " too small for EVPD=1\n", cmd->data_length); 70603e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 707e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return -EINVAL; 708c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 70905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 71005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 71105d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 712c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = dev->transport->get_device_type(dev); 713c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 714d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 715b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier if (cdb[2] == evpd_handlers[p].page) { 716b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier buf[1] = cdb[2]; 71705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover ret = evpd_handlers[p].emulate(cmd, buf); 718d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig goto out_unmap; 719b2eb705e00a9b9a9b3122192a7ab3e9058f0c48aRoland Dreier } 720d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 721c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7226708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 72303e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 724d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig ret = -EINVAL; 725d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig 726d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwigout_unmap: 727d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_kunmap_first_data_page(cmd); 728d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwigout: 729d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!ret) { 730d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 731d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 732d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 733d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig return ret; 734c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 735c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7365bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_readcapacity(struct se_task *task) 737c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 7386ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 7395951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 74005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 741904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger unsigned long long blocks_long = dev->transport->get_blocks(dev); 742904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger u32 blocks; 743904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger 744904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger if (blocks_long >= 0x00000000ffffffff) 745904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger blocks = 0xffffffff; 746904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger else 747904f0bc482201fa86e75c330d79dfd11be494cf8Nicholas Bellinger blocks = (u32)blocks_long; 748c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 74905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 75005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 751c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (blocks >> 24) & 0xff; 752c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = (blocks >> 16) & 0xff; 753c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = (blocks >> 8) & 0xff; 754c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = blocks & 0xff; 755e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[4] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff; 756e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[5] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff; 757e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[6] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff; 758e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[7] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff; 759c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 760c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set max 32-bit blocks to signal SERVICE ACTION READ_CAPACITY_16 761c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 762e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 763c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger put_unaligned_be32(0xFFFFFFFF, &buf[0]); 764c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 76505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 76605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 767d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 768d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 769c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 770c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 771c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 7725bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_readcapacity_16(struct se_task *task) 773c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 7746ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 7755951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 77605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 777c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned long long blocks = dev->transport->get_blocks(dev); 778c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 77905d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 78005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 781c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (blocks >> 56) & 0xff; 782c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = (blocks >> 48) & 0xff; 783c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[2] = (blocks >> 40) & 0xff; 784c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[3] = (blocks >> 32) & 0xff; 785c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[4] = (blocks >> 24) & 0xff; 786c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[5] = (blocks >> 16) & 0xff; 787c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[6] = (blocks >> 8) & 0xff; 788c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = blocks & 0xff; 789e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[8] = (dev->se_sub_dev->se_dev_attrib.block_size >> 24) & 0xff; 790e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[9] = (dev->se_sub_dev->se_dev_attrib.block_size >> 16) & 0xff; 791e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[10] = (dev->se_sub_dev->se_dev_attrib.block_size >> 8) & 0xff; 792e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover buf[11] = dev->se_sub_dev->se_dev_attrib.block_size & 0xff; 793c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 794c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Set Thin Provisioning Enable bit following sbc3r22 in section 795c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * READ CAPACITY (16) byte 14 if emulate_tpu or emulate_tpws is enabled. 796c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 797e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) 798c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[14] = 0x80; 799c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 80005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 80105d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 802d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 803d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 804c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 805c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 806c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 807c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 808c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_rwrecovery(unsigned char *p) 809c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 810c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x01; 811c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x0a; 812c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 813c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 12; 814c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 815c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 816c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 817c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_control(struct se_device *dev, unsigned char *p) 818c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 819c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x0a; 820c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x0a; 821c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[2] = 2; 822c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 8235de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * From spc4r23, 7.4.7 Control mode page 8245de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8255de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 8265de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * restrictions on the algorithm used for reordering commands 8275de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * having the SIMPLE task attribute (see SAM-4). 8285de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8295de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * Table 368 -- QUEUE ALGORITHM MODIFIER field 8305de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * Code Description 8315de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 0h Restricted reordering 8325de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 1h Unrestricted reordering allowed 8335de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 2h to 7h Reserved 8345de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8h to Fh Vendor specific 8355de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8365de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 8375de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * the device server shall order the processing sequence of commands 8385de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * having the SIMPLE task attribute such that data integrity is maintained 8395de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 8405de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * requests is halted at any time, the final value of all data observable 8415de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * on the medium shall be the same as if all the commands had been processed 8425de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * with the ORDERED task attribute). 8435de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * 8445de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 8455de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * device server may reorder the processing sequence of commands having the 8465de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * SIMPLE task attribute in any manner. Any data integrity exposures related to 8475de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * command sequence order shall be explicitly handled by the application client 8485de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger * through the selection of appropriate ommands and task attributes. 8495de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger */ 8505de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger p[3] = (dev->se_sub_dev->se_dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 8515de619a31d9cb051d1f818e661af4e54def82316Nicholas Bellinger /* 852c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From spc4r17, section 7.4.6 Control mode Page 853c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 854c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 855c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 856c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 00b: The logical unit shall clear any unit attention condition 857c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 858c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall not establish a unit attention condition when a com- 859c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 860c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status. 861c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 862c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 10b: The logical unit shall not clear any unit attention condition 863c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 864c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall not establish a unit attention condition when 865c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * a command is completed with BUSY, TASK SET FULL, or RESERVATION 866c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CONFLICT status. 867c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 868c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 11b a The logical unit shall not clear any unit attention condition 869c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 870c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status and shall establish a unit attention condition for the 871c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * initiator port associated with the I_T nexus on which the BUSY, 872c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 873c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Depending on the status, the additional sense code shall be set to 874c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 875c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 876c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * command, a unit attention condition shall be established only once 877c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 878c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * to the number of commands completed with one of those status codes. 879c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 880e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover p[4] = (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : 881e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; 882c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 883c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * From spc4r17, section 7.4.6 Control mode Page 884c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 885c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Task Aborted Status (TAS) bit set to zero. 886c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * 887c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * A task aborted status (TAS) bit set to zero specifies that aborted 888c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * tasks shall be terminated by the device server without any response 889c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * to the application client. A TAS bit set to one specifies that tasks 890c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * aborted by the actions of an I_T nexus other than the I_T nexus on 891c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * which the command was received shall be completed with TASK ABORTED 892c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * status (see SAM-4). 893c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 894e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover p[5] = (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? 0x40 : 0x00; 895c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[8] = 0xff; 896c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[9] = 0xff; 897c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[11] = 30; 898c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 899c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 12; 900c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 901c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 902c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic int 903c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_caching(struct se_device *dev, unsigned char *p) 904c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 905c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[0] = 0x08; 906c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[1] = 0x12; 907e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if (dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) 908c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[2] = 0x04; /* Write Cache Enable */ 909c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger p[12] = 0x20; /* Disabled Read Ahead */ 910c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 911c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 20; 912c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 913c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 914c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 915c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_write_protect(unsigned char *buf, int type) 916c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 917c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 918c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * I believe that the WP bit (bit 7) in the mode header is the same for 919c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * all device types.. 920c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 921c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (type) { 922c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_DISK: 923c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_TAPE: 924c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 925c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] |= 0x80; /* WP bit */ 926c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 927c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 928c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 929c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 930c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingerstatic void 931c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellingertarget_modesense_dpofua(unsigned char *buf, int type) 932c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 933c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (type) { 934c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case TYPE_DISK: 935c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] |= 0x10; /* DPOFUA bit */ 936c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 937c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 938c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 939c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 940c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 941c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 9425bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_modesense(struct se_task *task) 943c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 9446ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 9455951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 946a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover char *cdb = cmd->t_task_cdb; 94705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *rbuf; 948c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int type = dev->transport->get_device_type(dev); 9496ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 9506ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig int offset = ten ? 8 : 4; 951c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int length = 0; 952c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF]; 953c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 954c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 955c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 956c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger switch (cdb[2] & 0x3f) { 957c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x01: 958c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_rwrecovery(&buf[offset]); 959c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 960c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x08: 961c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_caching(dev, &buf[offset]); 962c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 963c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x0a: 964c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_control(dev, &buf[offset]); 965c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 966c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger case 0x3f: 967c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length = target_modesense_rwrecovery(&buf[offset]); 968c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length += target_modesense_caching(dev, &buf[offset+length]); 969c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger length += target_modesense_control(dev, &buf[offset+length]); 970c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger break; 971c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger default: 972f15ea5780d08e4c96930c0d607d05e480ec588c8Roland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 973f15ea5780d08e4c96930c0d607d05e480ec588c8Roland Dreier cdb[2] & 0x3f, cdb[3]); 97403e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNKNOWN_MODE_PAGE; 97503e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -EINVAL; 976c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 977c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset += length; 978c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 979c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ten) { 980c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset -= 2; 981c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = (offset >> 8) & 0xff; 982c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[1] = offset & 0xff; 983c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 984e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 985c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve && 986c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 987c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_write_protect(&buf[3], type); 988c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 989e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) && 990e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0)) 991c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger target_modesense_dpofua(&buf[3], type); 992c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 993c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((offset + 2) > cmd->data_length) 994c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = cmd->data_length; 995c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 996c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } else { 997c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset -= 1; 998c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = 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[2], 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[2], type); 1008c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1009c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if ((offset + 1) > cmd->data_length) 1010c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = cmd->data_length; 1011c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 101205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 101305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover rbuf = transport_kmap_first_data_page(cmd); 1014c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger memcpy(rbuf, buf, offset); 101505d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 1016c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1017d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1018d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1019c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1020c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1021c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 10225bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_request_sense(struct se_task *task) 1023c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 10246ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 1025a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = cmd->t_task_cdb; 102605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf; 1027c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger u8 ua_asc = 0, ua_ascq = 0; 102805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int err = 0; 1029c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1030c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cdb[1] & 0x01) { 10316708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("REQUEST_SENSE description emulation not" 1032c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " supported\n"); 103303e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 103403e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 1035c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 103605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 103705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 103805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 10396708bb27bb2703da238f21f516034263348af5beAndy Grover if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { 1040c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1041c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CURRENT ERROR, UNIT ATTENTION 1042c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1043c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = 0x70; 1044c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; 1045c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1046c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure request data length is enough for additional 1047c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * sense data. 1048c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1049c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length <= 18) { 1050c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x00; 105105d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover err = -EINVAL; 105205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto end; 1053c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1054c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1055c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * The Additional Sense Code (ASC) from the UNIT ATTENTION 1056c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1057c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASC_KEY_OFFSET] = ua_asc; 1058c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq; 1059c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x0A; 1060c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } else { 1061c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1062c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * CURRENT ERROR, NO SENSE 1063c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1064c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[0] = 0x70; 1065c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; 1066c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1067c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Make sure request data length is enough for additional 1068c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * sense data. 1069c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1070c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (cmd->data_length <= 18) { 1071c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x00; 107205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover err = -EINVAL; 107305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto end; 1074c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1075c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* 1076c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * NO ADDITIONAL SENSE INFORMATION 1077c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 1078c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[SPC_ASC_KEY_OFFSET] = 0x00; 1079c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger buf[7] = 0x0A; 1080c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1081c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 108205d1c7c0d0db4cc25548d9aadebb416888a82327Andy Groverend: 108305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 1084d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1085d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1086c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1087c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1088c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1089c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 1090c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support. 1091c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note this is not used for TCM/pSCSI passthrough 1092c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 10935bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_unmap(struct se_task *task) 1094c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1095e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_cmd *cmd = task->task_se_cmd; 10965951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 109705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover unsigned char *buf, *ptr = NULL; 1098a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover unsigned char *cdb = &cmd->t_task_cdb[0]; 1099c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger sector_t lba; 1100c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned int size = cmd->data_length, range; 110105d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover int ret = 0, offset; 1102c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger unsigned short dl, bd_dl; 1103c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11046ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_discard) { 11056ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("UNMAP emulation not supported for: %s\n", 11066ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig dev->transport->name); 110703e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 110803e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 11096ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 11106ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 1111c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger /* First UNMAP block descriptor starts at 8 byte offset */ 1112c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger offset = 8; 1113c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger size -= 8; 1114c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger dl = get_unaligned_be16(&cdb[0]); 1115c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger bd_dl = get_unaligned_be16(&cdb[2]); 111605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 111705d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover buf = transport_kmap_first_data_page(cmd); 111805d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover 1119c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ptr = &buf[offset]; 11206708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("UNMAP: Sub: %s Using dl: %hu bd_dl: %hu size: %hu" 1121c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger " ptr: %p\n", dev->transport->name, dl, bd_dl, size, ptr); 1122c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1123c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger while (size) { 1124c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger lba = get_unaligned_be64(&ptr[0]); 1125c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger range = get_unaligned_be32(&ptr[8]); 11266708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("UNMAP: Using lba: %llu and range: %u\n", 1127c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger (unsigned long long)lba, range); 1128c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1129c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret = dev->transport->do_discard(dev, lba, range); 1130c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ret < 0) { 11316708bb27bb2703da238f21f516034263348af5beAndy Grover pr_err("blkdev_issue_discard() failed: %d\n", 1132c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret); 113305d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover goto err; 1134c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1135c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1136c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ptr += 16; 1137c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger size -= 16; 1138c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1139c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 114005d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grovererr: 114105d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover transport_kunmap_first_data_page(cmd); 1142d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig if (!ret) { 1143d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1144d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1145d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig } 114605d1c7c0d0db4cc25548d9aadebb416888a82327Andy Grover return ret; 1147c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1148c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1149c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger/* 1150c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support. 1151c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger * Note this is not used for TCM/pSCSI passthrough 1152c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger */ 11535bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_write_same(struct se_task *task) 1154c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger{ 1155e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover struct se_cmd *cmd = task->task_se_cmd; 11565951146dea1ac8ff2f177477c907084d63913cadAndy Grover struct se_device *dev = cmd->se_dev; 1157a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover sector_t range; 1158a1d8b49abd60ba5d09e7c968731abcb0f8f1cbf6Andy Grover sector_t lba = cmd->t_task_lba; 11596ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig u32 num_blocks; 1160c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger int ret; 11616ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 11626ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_discard) { 11636ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("WRITE_SAME emulation not supported" 11646ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig " for: %s\n", dev->transport->name); 116503e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 116603e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 11676ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 11686ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 11696ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (cmd->t_task_cdb[0] == WRITE_SAME) 11706ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be16(&cmd->t_task_cdb[7]); 11716ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig else if (cmd->t_task_cdb[0] == WRITE_SAME_16) 11726ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be32(&cmd->t_task_cdb[10]); 11736ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig else /* WRITE_SAME_32 via VARIABLE_LENGTH_CMD */ 11746ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig num_blocks = get_unaligned_be32(&cmd->t_task_cdb[28]); 11756ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 1176dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger /* 1177706d5860969b3b24d65d9a57bd3bb5e4a1419c08Nicholas Bellinger * Use the explicit range when non zero is supplied, otherwise calculate 1178706d5860969b3b24d65d9a57bd3bb5e4a1419c08Nicholas Bellinger * the remaining range based on ->get_blocks() - starting LBA. 1179dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger */ 1180dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger if (num_blocks != 0) 1181dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger range = num_blocks; 1182dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger else 1183dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger range = (dev->transport->get_blocks(dev) - lba); 1184c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11856708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("WRITE_SAME UNMAP: LBA: %llu Range: %llu\n", 1186dd3a5ad8e0c8706659f02c4a72b8c87f6f7ab479Nicholas Bellinger (unsigned long long)lba, (unsigned long long)range); 1187c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1188c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger ret = dev->transport->do_discard(dev, lba, range); 1189c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger if (ret < 0) { 11906708bb27bb2703da238f21f516034263348af5beAndy Grover pr_debug("blkdev_issue_discard() failed for WRITE_SAME\n"); 1191e3d6f909ed803d92a5ac9b4a2c087e0eae9b90d0Andy Grover return ret; 1192c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger } 1193c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 1194d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1195d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1196c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger return 0; 1197c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger} 1198c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5Nicholas Bellinger 11995bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_synchronize_cache(struct se_task *task) 12006ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig{ 12016ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig struct se_device *dev = task->task_se_cmd->se_dev; 120203e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger struct se_cmd *cmd = task->task_se_cmd; 12036ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12046ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig if (!dev->transport->do_sync_cache) { 12056ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig pr_err("SYNCHRONIZE_CACHE emulation not supported" 12066ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig " for: %s\n", dev->transport->name); 120703e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 120803e98c9eb916f3f0868c1dc344dde2a60287ff72Nicholas Bellinger return -ENOSYS; 12096ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig } 12106ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12116ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig dev->transport->do_sync_cache(task); 12126ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig return 0; 12136ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig} 12146ed5a557905f1c4e9ca5f8a6d607303a12d097e1Christoph Hellwig 12155bda90c8f20f0af93375721533f4081a40fa6f41Christoph Hellwigint target_emulate_noop(struct se_task *task) 1216d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig{ 1217d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig task->task_scsi_status = GOOD; 1218d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig transport_complete_task(task, 1); 1219d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig return 0; 1220d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig} 1221d29a5b6acc4b63d4e05ff554509df6fbeaf527cdChristoph Hellwig 1222485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig/* 1223485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig * Write a CDB into @cdb that is based on the one the intiator sent us, 1224485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig * but updated to only cover the sectors that the current task handles. 1225485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig */ 1226485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwigvoid target_get_task_cdb(struct se_task *task, unsigned char *cdb) 1227485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig{ 1228485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig struct se_cmd *cmd = task->task_se_cmd; 1229b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig unsigned int cdb_len = scsi_command_size(cmd->t_task_cdb); 1230485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig 1231b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig memcpy(cdb, cmd->t_task_cdb, cdb_len); 1232485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig if (cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) { 1233b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig unsigned long long lba = task->task_lba; 1234b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig u32 sectors = task->task_sectors; 1235b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig 1236b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig switch (cdb_len) { 1237b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 6: 1238b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 21-bit LBA and 8-bit sectors */ 1239b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[1] = (lba >> 16) & 0x1f; 1240b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[2] = (lba >> 8) & 0xff; 1241b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[3] = lba & 0xff; 1242b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig cdb[4] = sectors & 0xff; 1243b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1244b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 10: 1245b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 32-bit LBA and 16-bit sectors */ 1246b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(lba, &cdb[2]); 1247b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be16(sectors, &cdb[7]); 1248b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1249b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 12: 1250b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 32-bit LBA and 32-bit sectors */ 1251b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(lba, &cdb[2]); 1252b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[6]); 1253b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1254b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 16: 1255b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 64-bit LBA and 32-bit sectors */ 1256b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be64(lba, &cdb[2]); 1257b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[10]); 1258b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1259b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig case 32: 1260b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig /* 64-bit LBA and 32-bit sectors, extended CDB */ 1261b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be64(lba, &cdb[12]); 1262b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig put_unaligned_be32(sectors, &cdb[28]); 1263b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig break; 1264b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig default: 1265b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig BUG(); 1266b937d27052e5759b1308782166fe47bc76e05b4dChristoph Hellwig } 1267485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig } 1268485fd0d1e3b8010b538bd0b209f3592acc825677Christoph Hellwig} 1269485fd0d1e3b8010b538bd0b209f3592acc825677Christoph HellwigEXPORT_SYMBOL(target_get_task_cdb); 1270