188455ec4SChristoph Hellwig /* 288455ec4SChristoph Hellwig * SCSI Primary Commands (SPC) parsing and emulation. 388455ec4SChristoph Hellwig * 488455ec4SChristoph Hellwig * Copyright (c) 2002, 2003, 2004, 2005 PyX Technologies, Inc. 588455ec4SChristoph Hellwig * Copyright (c) 2005, 2006, 2007 SBE, Inc. 688455ec4SChristoph Hellwig * Copyright (c) 2007-2010 Rising Tide Systems 788455ec4SChristoph Hellwig * Copyright (c) 2008-2010 Linux-iSCSI.org 888455ec4SChristoph Hellwig * 988455ec4SChristoph Hellwig * Nicholas A. Bellinger <nab@kernel.org> 1088455ec4SChristoph Hellwig * 1188455ec4SChristoph Hellwig * This program is free software; you can redistribute it and/or modify 1288455ec4SChristoph Hellwig * it under the terms of the GNU General Public License as published by 1388455ec4SChristoph Hellwig * the Free Software Foundation; either version 2 of the License, or 1488455ec4SChristoph Hellwig * (at your option) any later version. 1588455ec4SChristoph Hellwig * 1688455ec4SChristoph Hellwig * This program is distributed in the hope that it will be useful, 1788455ec4SChristoph Hellwig * but WITHOUT ANY WARRANTY; without even the implied warranty of 1888455ec4SChristoph Hellwig * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1988455ec4SChristoph Hellwig * GNU General Public License for more details. 2088455ec4SChristoph Hellwig * 2188455ec4SChristoph Hellwig * You should have received a copy of the GNU General Public License 2288455ec4SChristoph Hellwig * along with this program; if not, write to the Free Software 2388455ec4SChristoph Hellwig * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 2488455ec4SChristoph Hellwig */ 2588455ec4SChristoph Hellwig 2688455ec4SChristoph Hellwig #include <linux/kernel.h> 2788455ec4SChristoph Hellwig #include <linux/module.h> 2888455ec4SChristoph Hellwig #include <asm/unaligned.h> 2988455ec4SChristoph Hellwig 3088455ec4SChristoph Hellwig #include <scsi/scsi.h> 3188455ec4SChristoph Hellwig #include <scsi/scsi_tcq.h> 3288455ec4SChristoph Hellwig 3388455ec4SChristoph Hellwig #include <target/target_core_base.h> 3488455ec4SChristoph Hellwig #include <target/target_core_backend.h> 3588455ec4SChristoph Hellwig #include <target/target_core_fabric.h> 3688455ec4SChristoph Hellwig 3788455ec4SChristoph Hellwig #include "target_core_internal.h" 38eba2ca45SNicholas Bellinger #include "target_core_alua.h" 3988455ec4SChristoph Hellwig #include "target_core_pr.h" 4088455ec4SChristoph Hellwig #include "target_core_ua.h" 4188455ec4SChristoph Hellwig 4288455ec4SChristoph Hellwig 431fd032eeSChristoph Hellwig static void spc_fill_alua_data(struct se_port *port, unsigned char *buf) 441fd032eeSChristoph Hellwig { 451fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 461fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 471fd032eeSChristoph Hellwig 481fd032eeSChristoph Hellwig /* 491fd032eeSChristoph Hellwig * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS. 501fd032eeSChristoph Hellwig */ 511fd032eeSChristoph Hellwig buf[5] = 0x80; 521fd032eeSChristoph Hellwig 531fd032eeSChristoph Hellwig /* 541fd032eeSChristoph Hellwig * Set TPGS field for explict and/or implict ALUA access type 551fd032eeSChristoph Hellwig * and opteration. 561fd032eeSChristoph Hellwig * 571fd032eeSChristoph Hellwig * See spc4r17 section 6.4.2 Table 135 581fd032eeSChristoph Hellwig */ 591fd032eeSChristoph Hellwig if (!port) 601fd032eeSChristoph Hellwig return; 611fd032eeSChristoph Hellwig tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 621fd032eeSChristoph Hellwig if (!tg_pt_gp_mem) 631fd032eeSChristoph Hellwig return; 641fd032eeSChristoph Hellwig 651fd032eeSChristoph Hellwig spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 661fd032eeSChristoph Hellwig tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 671fd032eeSChristoph Hellwig if (tg_pt_gp) 681fd032eeSChristoph Hellwig buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; 691fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 701fd032eeSChristoph Hellwig } 711fd032eeSChristoph Hellwig 721fd032eeSChristoph Hellwig static int spc_emulate_inquiry_std(struct se_cmd *cmd, char *buf) 731fd032eeSChristoph Hellwig { 741fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 751fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 761fd032eeSChristoph Hellwig 771fd032eeSChristoph Hellwig /* Set RMB (removable media) for tape devices */ 781fd032eeSChristoph Hellwig if (dev->transport->get_device_type(dev) == TYPE_TAPE) 791fd032eeSChristoph Hellwig buf[1] = 0x80; 801fd032eeSChristoph Hellwig 811fd032eeSChristoph Hellwig buf[2] = dev->transport->get_device_rev(dev); 821fd032eeSChristoph Hellwig 831fd032eeSChristoph Hellwig /* 841fd032eeSChristoph Hellwig * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 851fd032eeSChristoph Hellwig * 861fd032eeSChristoph Hellwig * SPC4 says: 871fd032eeSChristoph Hellwig * A RESPONSE DATA FORMAT field set to 2h indicates that the 881fd032eeSChristoph Hellwig * standard INQUIRY data is in the format defined in this 891fd032eeSChristoph Hellwig * standard. Response data format values less than 2h are 901fd032eeSChristoph Hellwig * obsolete. Response data format values greater than 2h are 911fd032eeSChristoph Hellwig * reserved. 921fd032eeSChristoph Hellwig */ 931fd032eeSChristoph Hellwig buf[3] = 2; 941fd032eeSChristoph Hellwig 951fd032eeSChristoph Hellwig /* 961fd032eeSChristoph Hellwig * Enable SCCS and TPGS fields for Emulated ALUA 971fd032eeSChristoph Hellwig */ 980fd97ccfSChristoph Hellwig if (dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) 991fd032eeSChristoph Hellwig spc_fill_alua_data(lun->lun_sep, buf); 1001fd032eeSChristoph Hellwig 1011fd032eeSChristoph Hellwig buf[7] = 0x2; /* CmdQue=1 */ 1021fd032eeSChristoph Hellwig 1031fd032eeSChristoph Hellwig snprintf(&buf[8], 8, "LIO-ORG"); 1040fd97ccfSChristoph Hellwig snprintf(&buf[16], 16, "%s", dev->t10_wwn.model); 1050fd97ccfSChristoph Hellwig snprintf(&buf[32], 4, "%s", dev->t10_wwn.revision); 1061fd032eeSChristoph Hellwig buf[4] = 31; /* Set additional length to 31 */ 1071fd032eeSChristoph Hellwig 1081fd032eeSChristoph Hellwig return 0; 1091fd032eeSChristoph Hellwig } 1101fd032eeSChristoph Hellwig 1111fd032eeSChristoph Hellwig /* unit serial number */ 1121fd032eeSChristoph Hellwig static int spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 1131fd032eeSChristoph Hellwig { 1141fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1151fd032eeSChristoph Hellwig u16 len = 0; 1161fd032eeSChristoph Hellwig 1170fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 1181fd032eeSChristoph Hellwig u32 unit_serial_len; 1191fd032eeSChristoph Hellwig 1200fd97ccfSChristoph Hellwig unit_serial_len = strlen(dev->t10_wwn.unit_serial); 1211fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 1221fd032eeSChristoph Hellwig 1230fd97ccfSChristoph Hellwig len += sprintf(&buf[4], "%s", dev->t10_wwn.unit_serial); 1241fd032eeSChristoph Hellwig len++; /* Extra Byte for NULL Terminator */ 1251fd032eeSChristoph Hellwig buf[3] = len; 1261fd032eeSChristoph Hellwig } 1271fd032eeSChristoph Hellwig return 0; 1281fd032eeSChristoph Hellwig } 1291fd032eeSChristoph Hellwig 1301fd032eeSChristoph Hellwig static void spc_parse_naa_6h_vendor_specific(struct se_device *dev, 1311fd032eeSChristoph Hellwig unsigned char *buf) 1321fd032eeSChristoph Hellwig { 1330fd97ccfSChristoph Hellwig unsigned char *p = &dev->t10_wwn.unit_serial[0]; 1341fd032eeSChristoph Hellwig int cnt; 1351fd032eeSChristoph Hellwig bool next = true; 1361fd032eeSChristoph Hellwig 1371fd032eeSChristoph Hellwig /* 1381fd032eeSChristoph Hellwig * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 1391fd032eeSChristoph Hellwig * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 1401fd032eeSChristoph Hellwig * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 1411fd032eeSChristoph Hellwig * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 1421fd032eeSChristoph Hellwig * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 1431fd032eeSChristoph Hellwig * per device uniqeness. 1441fd032eeSChristoph Hellwig */ 1451fd032eeSChristoph Hellwig for (cnt = 0; *p && cnt < 13; p++) { 1461fd032eeSChristoph Hellwig int val = hex_to_bin(*p); 1471fd032eeSChristoph Hellwig 1481fd032eeSChristoph Hellwig if (val < 0) 1491fd032eeSChristoph Hellwig continue; 1501fd032eeSChristoph Hellwig 1511fd032eeSChristoph Hellwig if (next) { 1521fd032eeSChristoph Hellwig next = false; 1531fd032eeSChristoph Hellwig buf[cnt++] |= val; 1541fd032eeSChristoph Hellwig } else { 1551fd032eeSChristoph Hellwig next = true; 1561fd032eeSChristoph Hellwig buf[cnt] = val << 4; 1571fd032eeSChristoph Hellwig } 1581fd032eeSChristoph Hellwig } 1591fd032eeSChristoph Hellwig } 1601fd032eeSChristoph Hellwig 1611fd032eeSChristoph Hellwig /* 1621fd032eeSChristoph Hellwig * Device identification VPD, for a complete list of 1631fd032eeSChristoph Hellwig * DESIGNATOR TYPEs see spc4r17 Table 459. 1641fd032eeSChristoph Hellwig */ 1651fd032eeSChristoph Hellwig static int spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 1661fd032eeSChristoph Hellwig { 1671fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1681fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 1691fd032eeSChristoph Hellwig struct se_port *port = NULL; 1701fd032eeSChristoph Hellwig struct se_portal_group *tpg = NULL; 1711fd032eeSChristoph Hellwig struct t10_alua_lu_gp_member *lu_gp_mem; 1721fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 1731fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 1740fd97ccfSChristoph Hellwig unsigned char *prod = &dev->t10_wwn.model[0]; 1751fd032eeSChristoph Hellwig u32 prod_len; 1761fd032eeSChristoph Hellwig u32 unit_serial_len, off = 0; 1771fd032eeSChristoph Hellwig u16 len = 0, id_len; 1781fd032eeSChristoph Hellwig 1791fd032eeSChristoph Hellwig off = 4; 1801fd032eeSChristoph Hellwig 1811fd032eeSChristoph Hellwig /* 1821fd032eeSChristoph Hellwig * NAA IEEE Registered Extended Assigned designator format, see 1831fd032eeSChristoph Hellwig * spc4r17 section 7.7.3.6.5 1841fd032eeSChristoph Hellwig * 1851fd032eeSChristoph Hellwig * We depend upon a target_core_mod/ConfigFS provided 1861fd032eeSChristoph Hellwig * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 1871fd032eeSChristoph Hellwig * value in order to return the NAA id. 1881fd032eeSChristoph Hellwig */ 1890fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL)) 1901fd032eeSChristoph Hellwig goto check_t10_vend_desc; 1911fd032eeSChristoph Hellwig 1921fd032eeSChristoph Hellwig /* CODE SET == Binary */ 1931fd032eeSChristoph Hellwig buf[off++] = 0x1; 1941fd032eeSChristoph Hellwig 1951fd032eeSChristoph Hellwig /* Set ASSOCIATION == addressed logical unit: 0)b */ 1961fd032eeSChristoph Hellwig buf[off] = 0x00; 1971fd032eeSChristoph Hellwig 1981fd032eeSChristoph Hellwig /* Identifier/Designator type == NAA identifier */ 1991fd032eeSChristoph Hellwig buf[off++] |= 0x3; 2001fd032eeSChristoph Hellwig off++; 2011fd032eeSChristoph Hellwig 2021fd032eeSChristoph Hellwig /* Identifier/Designator length */ 2031fd032eeSChristoph Hellwig buf[off++] = 0x10; 2041fd032eeSChristoph Hellwig 2051fd032eeSChristoph Hellwig /* 2061fd032eeSChristoph Hellwig * Start NAA IEEE Registered Extended Identifier/Designator 2071fd032eeSChristoph Hellwig */ 2081fd032eeSChristoph Hellwig buf[off++] = (0x6 << 4); 2091fd032eeSChristoph Hellwig 2101fd032eeSChristoph Hellwig /* 2111fd032eeSChristoph Hellwig * Use OpenFabrics IEEE Company ID: 00 14 05 2121fd032eeSChristoph Hellwig */ 2131fd032eeSChristoph Hellwig buf[off++] = 0x01; 2141fd032eeSChristoph Hellwig buf[off++] = 0x40; 2151fd032eeSChristoph Hellwig buf[off] = (0x5 << 4); 2161fd032eeSChristoph Hellwig 2171fd032eeSChristoph Hellwig /* 2181fd032eeSChristoph Hellwig * Return ConfigFS Unit Serial Number information for 2191fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER and 2201fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION 2211fd032eeSChristoph Hellwig */ 2221fd032eeSChristoph Hellwig spc_parse_naa_6h_vendor_specific(dev, &buf[off]); 2231fd032eeSChristoph Hellwig 2241fd032eeSChristoph Hellwig len = 20; 2251fd032eeSChristoph Hellwig off = (len + 4); 2261fd032eeSChristoph Hellwig 2271fd032eeSChristoph Hellwig check_t10_vend_desc: 2281fd032eeSChristoph Hellwig /* 2291fd032eeSChristoph Hellwig * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 2301fd032eeSChristoph Hellwig */ 2311fd032eeSChristoph Hellwig id_len = 8; /* For Vendor field */ 2321fd032eeSChristoph Hellwig prod_len = 4; /* For VPD Header */ 2331fd032eeSChristoph Hellwig prod_len += 8; /* For Vendor field */ 2341fd032eeSChristoph Hellwig prod_len += strlen(prod); 2351fd032eeSChristoph Hellwig prod_len++; /* For : */ 2361fd032eeSChristoph Hellwig 2370fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 2380fd97ccfSChristoph Hellwig unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]); 2391fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 2401fd032eeSChristoph Hellwig 2411fd032eeSChristoph Hellwig id_len += sprintf(&buf[off+12], "%s:%s", prod, 2420fd97ccfSChristoph Hellwig &dev->t10_wwn.unit_serial[0]); 2431fd032eeSChristoph Hellwig } 2441fd032eeSChristoph Hellwig buf[off] = 0x2; /* ASCII */ 2451fd032eeSChristoph Hellwig buf[off+1] = 0x1; /* T10 Vendor ID */ 2461fd032eeSChristoph Hellwig buf[off+2] = 0x0; 2471fd032eeSChristoph Hellwig memcpy(&buf[off+4], "LIO-ORG", 8); 2481fd032eeSChristoph Hellwig /* Extra Byte for NULL Terminator */ 2491fd032eeSChristoph Hellwig id_len++; 2501fd032eeSChristoph Hellwig /* Identifier Length */ 2511fd032eeSChristoph Hellwig buf[off+3] = id_len; 2521fd032eeSChristoph Hellwig /* Header size for Designation descriptor */ 2531fd032eeSChristoph Hellwig len += (id_len + 4); 2541fd032eeSChristoph Hellwig off += (id_len + 4); 2551fd032eeSChristoph Hellwig /* 2561fd032eeSChristoph Hellwig * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD 2571fd032eeSChristoph Hellwig */ 2581fd032eeSChristoph Hellwig port = lun->lun_sep; 2591fd032eeSChristoph Hellwig if (port) { 2601fd032eeSChristoph Hellwig struct t10_alua_lu_gp *lu_gp; 2611fd032eeSChristoph Hellwig u32 padding, scsi_name_len; 2621fd032eeSChristoph Hellwig u16 lu_gp_id = 0; 2631fd032eeSChristoph Hellwig u16 tg_pt_gp_id = 0; 2641fd032eeSChristoph Hellwig u16 tpgt; 2651fd032eeSChristoph Hellwig 2661fd032eeSChristoph Hellwig tpg = port->sep_tpg; 2671fd032eeSChristoph Hellwig /* 2681fd032eeSChristoph Hellwig * Relative target port identifer, see spc4r17 2691fd032eeSChristoph Hellwig * section 7.7.3.7 2701fd032eeSChristoph Hellwig * 2711fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2721fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2731fd032eeSChristoph Hellwig */ 2741fd032eeSChristoph Hellwig buf[off] = 2751fd032eeSChristoph Hellwig (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 2761fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 2771fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 2781fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 2791fd032eeSChristoph Hellwig buf[off] |= 0x10; 2801fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Relative target port identifer */ 2811fd032eeSChristoph Hellwig buf[off++] |= 0x4; 2821fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 2831fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 2841fd032eeSChristoph Hellwig /* Skip over Obsolete field in RTPI payload 2851fd032eeSChristoph Hellwig * in Table 472 */ 2861fd032eeSChristoph Hellwig off += 2; 2871fd032eeSChristoph Hellwig buf[off++] = ((port->sep_rtpi >> 8) & 0xff); 2881fd032eeSChristoph Hellwig buf[off++] = (port->sep_rtpi & 0xff); 2891fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 2901fd032eeSChristoph Hellwig /* 2911fd032eeSChristoph Hellwig * Target port group identifier, see spc4r17 2921fd032eeSChristoph Hellwig * section 7.7.3.8 2931fd032eeSChristoph Hellwig * 2941fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2951fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2961fd032eeSChristoph Hellwig */ 2970fd97ccfSChristoph Hellwig if (dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) 2981fd032eeSChristoph Hellwig goto check_scsi_name; 2991fd032eeSChristoph Hellwig 3001fd032eeSChristoph Hellwig tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 3011fd032eeSChristoph Hellwig if (!tg_pt_gp_mem) 3021fd032eeSChristoph Hellwig goto check_lu_gp; 3031fd032eeSChristoph Hellwig 3041fd032eeSChristoph Hellwig spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3051fd032eeSChristoph Hellwig tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 3061fd032eeSChristoph Hellwig if (!tg_pt_gp) { 3071fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3081fd032eeSChristoph Hellwig goto check_lu_gp; 3091fd032eeSChristoph Hellwig } 3101fd032eeSChristoph Hellwig tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 3111fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3121fd032eeSChristoph Hellwig 3131fd032eeSChristoph Hellwig buf[off] = 3141fd032eeSChristoph Hellwig (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 3151fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3161fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3171fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3181fd032eeSChristoph Hellwig buf[off] |= 0x10; 3191fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Target port group identifier */ 3201fd032eeSChristoph Hellwig buf[off++] |= 0x5; 3211fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3221fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3231fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3241fd032eeSChristoph Hellwig buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); 3251fd032eeSChristoph Hellwig buf[off++] = (tg_pt_gp_id & 0xff); 3261fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3271fd032eeSChristoph Hellwig /* 3281fd032eeSChristoph Hellwig * Logical Unit Group identifier, see spc4r17 3291fd032eeSChristoph Hellwig * section 7.7.3.8 3301fd032eeSChristoph Hellwig */ 3311fd032eeSChristoph Hellwig check_lu_gp: 3321fd032eeSChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 3331fd032eeSChristoph Hellwig if (!lu_gp_mem) 3341fd032eeSChristoph Hellwig goto check_scsi_name; 3351fd032eeSChristoph Hellwig 3361fd032eeSChristoph Hellwig spin_lock(&lu_gp_mem->lu_gp_mem_lock); 3371fd032eeSChristoph Hellwig lu_gp = lu_gp_mem->lu_gp; 3381fd032eeSChristoph Hellwig if (!lu_gp) { 3391fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3401fd032eeSChristoph Hellwig goto check_scsi_name; 3411fd032eeSChristoph Hellwig } 3421fd032eeSChristoph Hellwig lu_gp_id = lu_gp->lu_gp_id; 3431fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3441fd032eeSChristoph Hellwig 3451fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3461fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Logical Unit Group identifier */ 3471fd032eeSChristoph Hellwig buf[off++] |= 0x6; 3481fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3491fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3501fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3511fd032eeSChristoph Hellwig buf[off++] = ((lu_gp_id >> 8) & 0xff); 3521fd032eeSChristoph Hellwig buf[off++] = (lu_gp_id & 0xff); 3531fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3541fd032eeSChristoph Hellwig /* 3551fd032eeSChristoph Hellwig * SCSI name string designator, see spc4r17 3561fd032eeSChristoph Hellwig * section 7.7.3.11 3571fd032eeSChristoph Hellwig * 3581fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3591fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3601fd032eeSChristoph Hellwig */ 3611fd032eeSChristoph Hellwig check_scsi_name: 3621fd032eeSChristoph Hellwig scsi_name_len = strlen(tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 3631fd032eeSChristoph Hellwig /* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */ 3641fd032eeSChristoph Hellwig scsi_name_len += 10; 3651fd032eeSChristoph Hellwig /* Check for 4-byte padding */ 3661fd032eeSChristoph Hellwig padding = ((-scsi_name_len) & 3); 3671fd032eeSChristoph Hellwig if (padding != 0) 3681fd032eeSChristoph Hellwig scsi_name_len += padding; 3691fd032eeSChristoph Hellwig /* Header size + Designation descriptor */ 3701fd032eeSChristoph Hellwig scsi_name_len += 4; 3711fd032eeSChristoph Hellwig 3721fd032eeSChristoph Hellwig buf[off] = 3731fd032eeSChristoph Hellwig (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 3741fd032eeSChristoph Hellwig buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 3751fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3761fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3771fd032eeSChristoph Hellwig buf[off] |= 0x10; 3781fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == SCSI name string */ 3791fd032eeSChristoph Hellwig buf[off++] |= 0x8; 3801fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved and length */ 3811fd032eeSChristoph Hellwig /* 3821fd032eeSChristoph Hellwig * SCSI name string identifer containing, $FABRIC_MOD 3831fd032eeSChristoph Hellwig * dependent information. For LIO-Target and iSCSI 3841fd032eeSChristoph Hellwig * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 3851fd032eeSChristoph Hellwig * UTF-8 encoding. 3861fd032eeSChristoph Hellwig */ 3871fd032eeSChristoph Hellwig tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 3881fd032eeSChristoph Hellwig scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 3891fd032eeSChristoph Hellwig tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 3901fd032eeSChristoph Hellwig scsi_name_len += 1 /* Include NULL terminator */; 3911fd032eeSChristoph Hellwig /* 3921fd032eeSChristoph Hellwig * The null-terminated, null-padded (see 4.4.2) SCSI 3931fd032eeSChristoph Hellwig * NAME STRING field contains a UTF-8 format string. 3941fd032eeSChristoph Hellwig * The number of bytes in the SCSI NAME STRING field 3951fd032eeSChristoph Hellwig * (i.e., the value in the DESIGNATOR LENGTH field) 3961fd032eeSChristoph Hellwig * shall be no larger than 256 and shall be a multiple 3971fd032eeSChristoph Hellwig * of four. 3981fd032eeSChristoph Hellwig */ 3991fd032eeSChristoph Hellwig if (padding) 4001fd032eeSChristoph Hellwig scsi_name_len += padding; 4011fd032eeSChristoph Hellwig 4021fd032eeSChristoph Hellwig buf[off-1] = scsi_name_len; 4031fd032eeSChristoph Hellwig off += scsi_name_len; 4041fd032eeSChristoph Hellwig /* Header size + Designation descriptor */ 4051fd032eeSChristoph Hellwig len += (scsi_name_len + 4); 4061fd032eeSChristoph Hellwig } 4071fd032eeSChristoph Hellwig buf[2] = ((len >> 8) & 0xff); 4081fd032eeSChristoph Hellwig buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ 4091fd032eeSChristoph Hellwig return 0; 4101fd032eeSChristoph Hellwig } 4111fd032eeSChristoph Hellwig 4121fd032eeSChristoph Hellwig /* Extended INQUIRY Data VPD Page */ 4131fd032eeSChristoph Hellwig static int spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 4141fd032eeSChristoph Hellwig { 4151fd032eeSChristoph Hellwig buf[3] = 0x3c; 4161fd032eeSChristoph Hellwig /* Set HEADSUP, ORDSUP, SIMPSUP */ 4171fd032eeSChristoph Hellwig buf[5] = 0x07; 4181fd032eeSChristoph Hellwig 4191fd032eeSChristoph Hellwig /* If WriteCache emulation is enabled, set V_SUP */ 4200fd97ccfSChristoph Hellwig if (cmd->se_dev->dev_attrib.emulate_write_cache > 0) 4211fd032eeSChristoph Hellwig buf[6] = 0x01; 4221fd032eeSChristoph Hellwig return 0; 4231fd032eeSChristoph Hellwig } 4241fd032eeSChristoph Hellwig 4251fd032eeSChristoph Hellwig /* Block Limits VPD page */ 4261fd032eeSChristoph Hellwig static int spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 4271fd032eeSChristoph Hellwig { 4281fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 4291fd032eeSChristoph Hellwig u32 max_sectors; 4301fd032eeSChristoph Hellwig int have_tp = 0; 4311fd032eeSChristoph Hellwig 4321fd032eeSChristoph Hellwig /* 4331fd032eeSChristoph Hellwig * Following spc3r22 section 6.5.3 Block Limits VPD page, when 4341fd032eeSChristoph Hellwig * emulate_tpu=1 or emulate_tpws=1 we will be expect a 4351fd032eeSChristoph Hellwig * different page length for Thin Provisioning. 4361fd032eeSChristoph Hellwig */ 4370fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws) 4381fd032eeSChristoph Hellwig have_tp = 1; 4391fd032eeSChristoph Hellwig 4401fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 4411fd032eeSChristoph Hellwig buf[3] = have_tp ? 0x3c : 0x10; 4421fd032eeSChristoph Hellwig 4431fd032eeSChristoph Hellwig /* Set WSNZ to 1 */ 4441fd032eeSChristoph Hellwig buf[4] = 0x01; 4451fd032eeSChristoph Hellwig 4461fd032eeSChristoph Hellwig /* 4471fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH GRANULARITY 4481fd032eeSChristoph Hellwig */ 4491fd032eeSChristoph Hellwig put_unaligned_be16(1, &buf[6]); 4501fd032eeSChristoph Hellwig 4511fd032eeSChristoph Hellwig /* 4521fd032eeSChristoph Hellwig * Set MAXIMUM TRANSFER LENGTH 4531fd032eeSChristoph Hellwig */ 4540fd97ccfSChristoph Hellwig max_sectors = min(dev->dev_attrib.fabric_max_sectors, 4550fd97ccfSChristoph Hellwig dev->dev_attrib.hw_max_sectors); 4561fd032eeSChristoph Hellwig put_unaligned_be32(max_sectors, &buf[8]); 4571fd032eeSChristoph Hellwig 4581fd032eeSChristoph Hellwig /* 4591fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH 4601fd032eeSChristoph Hellwig */ 4610fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]); 4621fd032eeSChristoph Hellwig 4631fd032eeSChristoph Hellwig /* 4641fd032eeSChristoph Hellwig * Exit now if we don't support TP. 4651fd032eeSChristoph Hellwig */ 4661fd032eeSChristoph Hellwig if (!have_tp) 4671fd032eeSChristoph Hellwig return 0; 4681fd032eeSChristoph Hellwig 4691fd032eeSChristoph Hellwig /* 4701fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP LBA COUNT 4711fd032eeSChristoph Hellwig */ 4720fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_lba_count, &buf[20]); 4731fd032eeSChristoph Hellwig 4741fd032eeSChristoph Hellwig /* 4751fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 4761fd032eeSChristoph Hellwig */ 4770fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_block_desc_count, 4781fd032eeSChristoph Hellwig &buf[24]); 4791fd032eeSChristoph Hellwig 4801fd032eeSChristoph Hellwig /* 4811fd032eeSChristoph Hellwig * Set OPTIMAL UNMAP GRANULARITY 4821fd032eeSChristoph Hellwig */ 4830fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity, &buf[28]); 4841fd032eeSChristoph Hellwig 4851fd032eeSChristoph Hellwig /* 4861fd032eeSChristoph Hellwig * UNMAP GRANULARITY ALIGNMENT 4871fd032eeSChristoph Hellwig */ 4880fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity_alignment, 4891fd032eeSChristoph Hellwig &buf[32]); 4900fd97ccfSChristoph Hellwig if (dev->dev_attrib.unmap_granularity_alignment != 0) 4911fd032eeSChristoph Hellwig buf[32] |= 0x80; /* Set the UGAVALID bit */ 4921fd032eeSChristoph Hellwig 4931fd032eeSChristoph Hellwig return 0; 4941fd032eeSChristoph Hellwig } 4951fd032eeSChristoph Hellwig 4961fd032eeSChristoph Hellwig /* Block Device Characteristics VPD page */ 4971fd032eeSChristoph Hellwig static int spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 4981fd032eeSChristoph Hellwig { 4991fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5001fd032eeSChristoph Hellwig 5011fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5021fd032eeSChristoph Hellwig buf[3] = 0x3c; 5030fd97ccfSChristoph Hellwig buf[5] = dev->dev_attrib.is_nonrot ? 1 : 0; 5041fd032eeSChristoph Hellwig 5051fd032eeSChristoph Hellwig return 0; 5061fd032eeSChristoph Hellwig } 5071fd032eeSChristoph Hellwig 5081fd032eeSChristoph Hellwig /* Thin Provisioning VPD */ 5091fd032eeSChristoph Hellwig static int spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 5101fd032eeSChristoph Hellwig { 5111fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5121fd032eeSChristoph Hellwig 5131fd032eeSChristoph Hellwig /* 5141fd032eeSChristoph Hellwig * From spc3r22 section 6.5.4 Thin Provisioning VPD page: 5151fd032eeSChristoph Hellwig * 5161fd032eeSChristoph Hellwig * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 5171fd032eeSChristoph Hellwig * zero, then the page length shall be set to 0004h. If the DP bit 5181fd032eeSChristoph Hellwig * is set to one, then the page length shall be set to the value 5191fd032eeSChristoph Hellwig * defined in table 162. 5201fd032eeSChristoph Hellwig */ 5211fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5221fd032eeSChristoph Hellwig 5231fd032eeSChristoph Hellwig /* 5241fd032eeSChristoph Hellwig * Set Hardcoded length mentioned above for DP=0 5251fd032eeSChristoph Hellwig */ 5261fd032eeSChristoph Hellwig put_unaligned_be16(0x0004, &buf[2]); 5271fd032eeSChristoph Hellwig 5281fd032eeSChristoph Hellwig /* 5291fd032eeSChristoph Hellwig * The THRESHOLD EXPONENT field indicates the threshold set size in 5301fd032eeSChristoph Hellwig * LBAs as a power of 2 (i.e., the threshold set size is equal to 5311fd032eeSChristoph Hellwig * 2(threshold exponent)). 5321fd032eeSChristoph Hellwig * 5331fd032eeSChristoph Hellwig * Note that this is currently set to 0x00 as mkp says it will be 5341fd032eeSChristoph Hellwig * changing again. We can enable this once it has settled in T10 5351fd032eeSChristoph Hellwig * and is actually used by Linux/SCSI ML code. 5361fd032eeSChristoph Hellwig */ 5371fd032eeSChristoph Hellwig buf[4] = 0x00; 5381fd032eeSChristoph Hellwig 5391fd032eeSChristoph Hellwig /* 5401fd032eeSChristoph Hellwig * A TPU bit set to one indicates that the device server supports 5411fd032eeSChristoph Hellwig * the UNMAP command (see 5.25). A TPU bit set to zero indicates 5421fd032eeSChristoph Hellwig * that the device server does not support the UNMAP command. 5431fd032eeSChristoph Hellwig */ 5440fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu != 0) 5451fd032eeSChristoph Hellwig buf[5] = 0x80; 5461fd032eeSChristoph Hellwig 5471fd032eeSChristoph Hellwig /* 5481fd032eeSChristoph Hellwig * A TPWS bit set to one indicates that the device server supports 5491fd032eeSChristoph Hellwig * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 5501fd032eeSChristoph Hellwig * A TPWS bit set to zero indicates that the device server does not 5511fd032eeSChristoph Hellwig * support the use of the WRITE SAME (16) command to unmap LBAs. 5521fd032eeSChristoph Hellwig */ 5530fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpws != 0) 5541fd032eeSChristoph Hellwig buf[5] |= 0x40; 5551fd032eeSChristoph Hellwig 5561fd032eeSChristoph Hellwig return 0; 5571fd032eeSChristoph Hellwig } 5581fd032eeSChristoph Hellwig 5591fd032eeSChristoph Hellwig static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 5601fd032eeSChristoph Hellwig 5611fd032eeSChristoph Hellwig static struct { 5621fd032eeSChristoph Hellwig uint8_t page; 5631fd032eeSChristoph Hellwig int (*emulate)(struct se_cmd *, unsigned char *); 5641fd032eeSChristoph Hellwig } evpd_handlers[] = { 5651fd032eeSChristoph Hellwig { .page = 0x00, .emulate = spc_emulate_evpd_00 }, 5661fd032eeSChristoph Hellwig { .page = 0x80, .emulate = spc_emulate_evpd_80 }, 5671fd032eeSChristoph Hellwig { .page = 0x83, .emulate = spc_emulate_evpd_83 }, 5681fd032eeSChristoph Hellwig { .page = 0x86, .emulate = spc_emulate_evpd_86 }, 5691fd032eeSChristoph Hellwig { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, 5701fd032eeSChristoph Hellwig { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, 5711fd032eeSChristoph Hellwig { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, 5721fd032eeSChristoph Hellwig }; 5731fd032eeSChristoph Hellwig 5741fd032eeSChristoph Hellwig /* supported vital product data pages */ 5751fd032eeSChristoph Hellwig static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 5761fd032eeSChristoph Hellwig { 5771fd032eeSChristoph Hellwig int p; 5781fd032eeSChristoph Hellwig 5791fd032eeSChristoph Hellwig /* 5801fd032eeSChristoph Hellwig * Only report the INQUIRY EVPD=1 pages after a valid NAA 5811fd032eeSChristoph Hellwig * Registered Extended LUN WWN has been set via ConfigFS 5821fd032eeSChristoph Hellwig * during device creation/restart. 5831fd032eeSChristoph Hellwig */ 5840fd97ccfSChristoph Hellwig if (cmd->se_dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 5851fd032eeSChristoph Hellwig buf[3] = ARRAY_SIZE(evpd_handlers); 5861fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) 5871fd032eeSChristoph Hellwig buf[p + 4] = evpd_handlers[p].page; 5881fd032eeSChristoph Hellwig } 5891fd032eeSChristoph Hellwig 5901fd032eeSChristoph Hellwig return 0; 5911fd032eeSChristoph Hellwig } 5921fd032eeSChristoph Hellwig 5931fd032eeSChristoph Hellwig static int spc_emulate_inquiry(struct se_cmd *cmd) 5941fd032eeSChristoph Hellwig { 5951fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5961fd032eeSChristoph Hellwig struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg; 597ffe7b0e9SPaolo Bonzini unsigned char *rbuf; 5981fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 599ffe7b0e9SPaolo Bonzini unsigned char buf[SE_INQUIRY_BUF]; 6001fd032eeSChristoph Hellwig int p, ret; 6011fd032eeSChristoph Hellwig 602dea5f099SNicholas Bellinger memset(buf, 0, SE_INQUIRY_BUF); 603dea5f099SNicholas Bellinger 6041fd032eeSChristoph Hellwig if (dev == tpg->tpg_virt_lun0.lun_se_dev) 6051fd032eeSChristoph Hellwig buf[0] = 0x3f; /* Not connected */ 6061fd032eeSChristoph Hellwig else 6071fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 6081fd032eeSChristoph Hellwig 6091fd032eeSChristoph Hellwig if (!(cdb[1] & 0x1)) { 6101fd032eeSChristoph Hellwig if (cdb[2]) { 6111fd032eeSChristoph Hellwig pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", 6121fd032eeSChristoph Hellwig cdb[2]); 6131fd032eeSChristoph Hellwig cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 6141fd032eeSChristoph Hellwig ret = -EINVAL; 6151fd032eeSChristoph Hellwig goto out; 6161fd032eeSChristoph Hellwig } 6171fd032eeSChristoph Hellwig 6181fd032eeSChristoph Hellwig ret = spc_emulate_inquiry_std(cmd, buf); 6191fd032eeSChristoph Hellwig goto out; 6201fd032eeSChristoph Hellwig } 6211fd032eeSChristoph Hellwig 6221fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 6231fd032eeSChristoph Hellwig if (cdb[2] == evpd_handlers[p].page) { 6241fd032eeSChristoph Hellwig buf[1] = cdb[2]; 6251fd032eeSChristoph Hellwig ret = evpd_handlers[p].emulate(cmd, buf); 6261fd032eeSChristoph Hellwig goto out; 6271fd032eeSChristoph Hellwig } 6281fd032eeSChristoph Hellwig } 6291fd032eeSChristoph Hellwig 6301fd032eeSChristoph Hellwig pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 6311fd032eeSChristoph Hellwig cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 6321fd032eeSChristoph Hellwig ret = -EINVAL; 6331fd032eeSChristoph Hellwig 6341fd032eeSChristoph Hellwig out: 635ffe7b0e9SPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 636ffe7b0e9SPaolo Bonzini if (rbuf) { 637ffe7b0e9SPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 6381fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 639ffe7b0e9SPaolo Bonzini } 6401fd032eeSChristoph Hellwig 6411fd032eeSChristoph Hellwig if (!ret) 6421fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 6431fd032eeSChristoph Hellwig return ret; 6441fd032eeSChristoph Hellwig } 6451fd032eeSChristoph Hellwig 6461fd032eeSChristoph Hellwig static int spc_modesense_rwrecovery(unsigned char *p) 6471fd032eeSChristoph Hellwig { 6481fd032eeSChristoph Hellwig p[0] = 0x01; 6491fd032eeSChristoph Hellwig p[1] = 0x0a; 6501fd032eeSChristoph Hellwig 6511fd032eeSChristoph Hellwig return 12; 6521fd032eeSChristoph Hellwig } 6531fd032eeSChristoph Hellwig 6541fd032eeSChristoph Hellwig static int spc_modesense_control(struct se_device *dev, unsigned char *p) 6551fd032eeSChristoph Hellwig { 6561fd032eeSChristoph Hellwig p[0] = 0x0a; 6571fd032eeSChristoph Hellwig p[1] = 0x0a; 6581fd032eeSChristoph Hellwig p[2] = 2; 6591fd032eeSChristoph Hellwig /* 6601fd032eeSChristoph Hellwig * From spc4r23, 7.4.7 Control mode page 6611fd032eeSChristoph Hellwig * 6621fd032eeSChristoph Hellwig * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 6631fd032eeSChristoph Hellwig * restrictions on the algorithm used for reordering commands 6641fd032eeSChristoph Hellwig * having the SIMPLE task attribute (see SAM-4). 6651fd032eeSChristoph Hellwig * 6661fd032eeSChristoph Hellwig * Table 368 -- QUEUE ALGORITHM MODIFIER field 6671fd032eeSChristoph Hellwig * Code Description 6681fd032eeSChristoph Hellwig * 0h Restricted reordering 6691fd032eeSChristoph Hellwig * 1h Unrestricted reordering allowed 6701fd032eeSChristoph Hellwig * 2h to 7h Reserved 6711fd032eeSChristoph Hellwig * 8h to Fh Vendor specific 6721fd032eeSChristoph Hellwig * 6731fd032eeSChristoph Hellwig * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 6741fd032eeSChristoph Hellwig * the device server shall order the processing sequence of commands 6751fd032eeSChristoph Hellwig * having the SIMPLE task attribute such that data integrity is maintained 6761fd032eeSChristoph Hellwig * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 6771fd032eeSChristoph Hellwig * requests is halted at any time, the final value of all data observable 6781fd032eeSChristoph Hellwig * on the medium shall be the same as if all the commands had been processed 6791fd032eeSChristoph Hellwig * with the ORDERED task attribute). 6801fd032eeSChristoph Hellwig * 6811fd032eeSChristoph Hellwig * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 6821fd032eeSChristoph Hellwig * device server may reorder the processing sequence of commands having the 6831fd032eeSChristoph Hellwig * SIMPLE task attribute in any manner. Any data integrity exposures related to 6841fd032eeSChristoph Hellwig * command sequence order shall be explicitly handled by the application client 6851fd032eeSChristoph Hellwig * through the selection of appropriate ommands and task attributes. 6861fd032eeSChristoph Hellwig */ 6870fd97ccfSChristoph Hellwig p[3] = (dev->dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 6881fd032eeSChristoph Hellwig /* 6891fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 6901fd032eeSChristoph Hellwig * 6911fd032eeSChristoph Hellwig * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 6921fd032eeSChristoph Hellwig * 6931fd032eeSChristoph Hellwig * 00b: The logical unit shall clear any unit attention condition 6941fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 6951fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when a com- 6961fd032eeSChristoph Hellwig * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 6971fd032eeSChristoph Hellwig * status. 6981fd032eeSChristoph Hellwig * 6991fd032eeSChristoph Hellwig * 10b: The logical unit shall not clear any unit attention condition 7001fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 7011fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when 7021fd032eeSChristoph Hellwig * a command is completed with BUSY, TASK SET FULL, or RESERVATION 7031fd032eeSChristoph Hellwig * CONFLICT status. 7041fd032eeSChristoph Hellwig * 7051fd032eeSChristoph Hellwig * 11b a The logical unit shall not clear any unit attention condition 7061fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 7071fd032eeSChristoph Hellwig * status and shall establish a unit attention condition for the 7081fd032eeSChristoph Hellwig * initiator port associated with the I_T nexus on which the BUSY, 7091fd032eeSChristoph Hellwig * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 7101fd032eeSChristoph Hellwig * Depending on the status, the additional sense code shall be set to 7111fd032eeSChristoph Hellwig * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 7121fd032eeSChristoph Hellwig * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 7131fd032eeSChristoph Hellwig * command, a unit attention condition shall be established only once 7141fd032eeSChristoph Hellwig * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 7151fd032eeSChristoph Hellwig * to the number of commands completed with one of those status codes. 7161fd032eeSChristoph Hellwig */ 7170fd97ccfSChristoph Hellwig p[4] = (dev->dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : 7180fd97ccfSChristoph Hellwig (dev->dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; 7191fd032eeSChristoph Hellwig /* 7201fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 7211fd032eeSChristoph Hellwig * 7221fd032eeSChristoph Hellwig * Task Aborted Status (TAS) bit set to zero. 7231fd032eeSChristoph Hellwig * 7241fd032eeSChristoph Hellwig * A task aborted status (TAS) bit set to zero specifies that aborted 7251fd032eeSChristoph Hellwig * tasks shall be terminated by the device server without any response 7261fd032eeSChristoph Hellwig * to the application client. A TAS bit set to one specifies that tasks 7271fd032eeSChristoph Hellwig * aborted by the actions of an I_T nexus other than the I_T nexus on 7281fd032eeSChristoph Hellwig * which the command was received shall be completed with TASK ABORTED 7291fd032eeSChristoph Hellwig * status (see SAM-4). 7301fd032eeSChristoph Hellwig */ 7310fd97ccfSChristoph Hellwig p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00; 7321fd032eeSChristoph Hellwig p[8] = 0xff; 7331fd032eeSChristoph Hellwig p[9] = 0xff; 7341fd032eeSChristoph Hellwig p[11] = 30; 7351fd032eeSChristoph Hellwig 7361fd032eeSChristoph Hellwig return 12; 7371fd032eeSChristoph Hellwig } 7381fd032eeSChristoph Hellwig 7391fd032eeSChristoph Hellwig static int spc_modesense_caching(struct se_device *dev, unsigned char *p) 7401fd032eeSChristoph Hellwig { 7411fd032eeSChristoph Hellwig p[0] = 0x08; 7421fd032eeSChristoph Hellwig p[1] = 0x12; 7430fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_write_cache > 0) 7441fd032eeSChristoph Hellwig p[2] = 0x04; /* Write Cache Enable */ 7451fd032eeSChristoph Hellwig p[12] = 0x20; /* Disabled Read Ahead */ 7461fd032eeSChristoph Hellwig 7471fd032eeSChristoph Hellwig return 20; 7481fd032eeSChristoph Hellwig } 7491fd032eeSChristoph Hellwig 7501fd032eeSChristoph Hellwig static void spc_modesense_write_protect(unsigned char *buf, int type) 7511fd032eeSChristoph Hellwig { 7521fd032eeSChristoph Hellwig /* 7531fd032eeSChristoph Hellwig * I believe that the WP bit (bit 7) in the mode header is the same for 7541fd032eeSChristoph Hellwig * all device types.. 7551fd032eeSChristoph Hellwig */ 7561fd032eeSChristoph Hellwig switch (type) { 7571fd032eeSChristoph Hellwig case TYPE_DISK: 7581fd032eeSChristoph Hellwig case TYPE_TAPE: 7591fd032eeSChristoph Hellwig default: 7601fd032eeSChristoph Hellwig buf[0] |= 0x80; /* WP bit */ 7611fd032eeSChristoph Hellwig break; 7621fd032eeSChristoph Hellwig } 7631fd032eeSChristoph Hellwig } 7641fd032eeSChristoph Hellwig 7651fd032eeSChristoph Hellwig static void spc_modesense_dpofua(unsigned char *buf, int type) 7661fd032eeSChristoph Hellwig { 7671fd032eeSChristoph Hellwig switch (type) { 7681fd032eeSChristoph Hellwig case TYPE_DISK: 7691fd032eeSChristoph Hellwig buf[0] |= 0x10; /* DPOFUA bit */ 7701fd032eeSChristoph Hellwig break; 7711fd032eeSChristoph Hellwig default: 7721fd032eeSChristoph Hellwig break; 7731fd032eeSChristoph Hellwig } 7741fd032eeSChristoph Hellwig } 7751fd032eeSChristoph Hellwig 7761fd032eeSChristoph Hellwig static int spc_emulate_modesense(struct se_cmd *cmd) 7771fd032eeSChristoph Hellwig { 7781fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 7791fd032eeSChristoph Hellwig char *cdb = cmd->t_task_cdb; 7801fd032eeSChristoph Hellwig unsigned char *rbuf; 7811fd032eeSChristoph Hellwig int type = dev->transport->get_device_type(dev); 7821fd032eeSChristoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 7837a3f369cSPaolo Bonzini u32 offset = ten ? 8 : 4; 7841fd032eeSChristoph Hellwig int length = 0; 7851fd032eeSChristoph Hellwig unsigned char buf[SE_MODE_PAGE_BUF]; 7861fd032eeSChristoph Hellwig 7871fd032eeSChristoph Hellwig memset(buf, 0, SE_MODE_PAGE_BUF); 7881fd032eeSChristoph Hellwig 7891fd032eeSChristoph Hellwig switch (cdb[2] & 0x3f) { 7901fd032eeSChristoph Hellwig case 0x01: 7911fd032eeSChristoph Hellwig length = spc_modesense_rwrecovery(&buf[offset]); 7921fd032eeSChristoph Hellwig break; 7931fd032eeSChristoph Hellwig case 0x08: 7941fd032eeSChristoph Hellwig length = spc_modesense_caching(dev, &buf[offset]); 7951fd032eeSChristoph Hellwig break; 7961fd032eeSChristoph Hellwig case 0x0a: 7971fd032eeSChristoph Hellwig length = spc_modesense_control(dev, &buf[offset]); 7981fd032eeSChristoph Hellwig break; 7991fd032eeSChristoph Hellwig case 0x3f: 8001fd032eeSChristoph Hellwig length = spc_modesense_rwrecovery(&buf[offset]); 8011fd032eeSChristoph Hellwig length += spc_modesense_caching(dev, &buf[offset+length]); 8021fd032eeSChristoph Hellwig length += spc_modesense_control(dev, &buf[offset+length]); 8031fd032eeSChristoph Hellwig break; 8041fd032eeSChristoph Hellwig default: 8051fd032eeSChristoph Hellwig pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 8061fd032eeSChristoph Hellwig cdb[2] & 0x3f, cdb[3]); 8071fd032eeSChristoph Hellwig cmd->scsi_sense_reason = TCM_UNKNOWN_MODE_PAGE; 8081fd032eeSChristoph Hellwig return -EINVAL; 8091fd032eeSChristoph Hellwig } 8101fd032eeSChristoph Hellwig offset += length; 8111fd032eeSChristoph Hellwig 8121fd032eeSChristoph Hellwig if (ten) { 8131fd032eeSChristoph Hellwig offset -= 2; 8141fd032eeSChristoph Hellwig buf[0] = (offset >> 8) & 0xff; 8151fd032eeSChristoph Hellwig buf[1] = offset & 0xff; 8167a3f369cSPaolo Bonzini offset += 2; 8171fd032eeSChristoph Hellwig 8181fd032eeSChristoph Hellwig if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 8191fd032eeSChristoph Hellwig (cmd->se_deve && 8201fd032eeSChristoph Hellwig (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 8211fd032eeSChristoph Hellwig spc_modesense_write_protect(&buf[3], type); 8221fd032eeSChristoph Hellwig 8230fd97ccfSChristoph Hellwig if ((dev->dev_attrib.emulate_write_cache > 0) && 8240fd97ccfSChristoph Hellwig (dev->dev_attrib.emulate_fua_write > 0)) 8251fd032eeSChristoph Hellwig spc_modesense_dpofua(&buf[3], type); 8261fd032eeSChristoph Hellwig } else { 8271fd032eeSChristoph Hellwig offset -= 1; 8281fd032eeSChristoph Hellwig buf[0] = offset & 0xff; 8297a3f369cSPaolo Bonzini offset += 1; 8301fd032eeSChristoph Hellwig 8311fd032eeSChristoph Hellwig if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 8321fd032eeSChristoph Hellwig (cmd->se_deve && 8331fd032eeSChristoph Hellwig (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 8341fd032eeSChristoph Hellwig spc_modesense_write_protect(&buf[2], type); 8351fd032eeSChristoph Hellwig 8360fd97ccfSChristoph Hellwig if ((dev->dev_attrib.emulate_write_cache > 0) && 8370fd97ccfSChristoph Hellwig (dev->dev_attrib.emulate_fua_write > 0)) 8381fd032eeSChristoph Hellwig spc_modesense_dpofua(&buf[2], type); 8391fd032eeSChristoph Hellwig } 8401fd032eeSChristoph Hellwig 8411fd032eeSChristoph Hellwig rbuf = transport_kmap_data_sg(cmd); 8427a3f369cSPaolo Bonzini if (rbuf) { 8437a3f369cSPaolo Bonzini memcpy(rbuf, buf, min(offset, cmd->data_length)); 8441fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 8457a3f369cSPaolo Bonzini } 8461fd032eeSChristoph Hellwig 8471fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 8481fd032eeSChristoph Hellwig return 0; 8491fd032eeSChristoph Hellwig } 8501fd032eeSChristoph Hellwig 8511fd032eeSChristoph Hellwig static int spc_emulate_request_sense(struct se_cmd *cmd) 8521fd032eeSChristoph Hellwig { 8531fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 85432a8811fSPaolo Bonzini unsigned char *rbuf; 8551fd032eeSChristoph Hellwig u8 ua_asc = 0, ua_ascq = 0; 85632a8811fSPaolo Bonzini unsigned char buf[SE_SENSE_BUF]; 85732a8811fSPaolo Bonzini 85832a8811fSPaolo Bonzini memset(buf, 0, SE_SENSE_BUF); 8591fd032eeSChristoph Hellwig 8601fd032eeSChristoph Hellwig if (cdb[1] & 0x01) { 8611fd032eeSChristoph Hellwig pr_err("REQUEST_SENSE description emulation not" 8621fd032eeSChristoph Hellwig " supported\n"); 8631fd032eeSChristoph Hellwig cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 8641fd032eeSChristoph Hellwig return -ENOSYS; 8651fd032eeSChristoph Hellwig } 8661fd032eeSChristoph Hellwig 86732a8811fSPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 86832a8811fSPaolo Bonzini if (cmd->scsi_sense_reason != 0) { 86932a8811fSPaolo Bonzini /* 87032a8811fSPaolo Bonzini * Out of memory. We will fail with CHECK CONDITION, so 87132a8811fSPaolo Bonzini * we must not clear the unit attention condition. 87232a8811fSPaolo Bonzini */ 87332a8811fSPaolo Bonzini target_complete_cmd(cmd, CHECK_CONDITION); 87432a8811fSPaolo Bonzini return 0; 87532a8811fSPaolo Bonzini } else if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { 8761fd032eeSChristoph Hellwig /* 8771fd032eeSChristoph Hellwig * CURRENT ERROR, UNIT ATTENTION 8781fd032eeSChristoph Hellwig */ 8791fd032eeSChristoph Hellwig buf[0] = 0x70; 8801fd032eeSChristoph Hellwig buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; 8811fd032eeSChristoph Hellwig 8821fd032eeSChristoph Hellwig /* 8831fd032eeSChristoph Hellwig * The Additional Sense Code (ASC) from the UNIT ATTENTION 8841fd032eeSChristoph Hellwig */ 8851fd032eeSChristoph Hellwig buf[SPC_ASC_KEY_OFFSET] = ua_asc; 8861fd032eeSChristoph Hellwig buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq; 8871fd032eeSChristoph Hellwig buf[7] = 0x0A; 8881fd032eeSChristoph Hellwig } else { 8891fd032eeSChristoph Hellwig /* 8901fd032eeSChristoph Hellwig * CURRENT ERROR, NO SENSE 8911fd032eeSChristoph Hellwig */ 8921fd032eeSChristoph Hellwig buf[0] = 0x70; 8931fd032eeSChristoph Hellwig buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; 8941fd032eeSChristoph Hellwig 8951fd032eeSChristoph Hellwig /* 8961fd032eeSChristoph Hellwig * NO ADDITIONAL SENSE INFORMATION 8971fd032eeSChristoph Hellwig */ 8981fd032eeSChristoph Hellwig buf[SPC_ASC_KEY_OFFSET] = 0x00; 8991fd032eeSChristoph Hellwig buf[7] = 0x0A; 9001fd032eeSChristoph Hellwig } 9011fd032eeSChristoph Hellwig 90232a8811fSPaolo Bonzini if (rbuf) { 90332a8811fSPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 9041fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 90532a8811fSPaolo Bonzini } 90632a8811fSPaolo Bonzini 9071fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 9081fd032eeSChristoph Hellwig return 0; 9091fd032eeSChristoph Hellwig } 9101fd032eeSChristoph Hellwig 9118de530a5SChristoph Hellwig int spc_emulate_report_luns(struct se_cmd *cmd) 912d1b1f805SChristoph Hellwig { 913d1b1f805SChristoph Hellwig struct se_dev_entry *deve; 914d1b1f805SChristoph Hellwig struct se_session *sess = cmd->se_sess; 915d1b1f805SChristoph Hellwig unsigned char *buf; 916d1b1f805SChristoph Hellwig u32 lun_count = 0, offset = 8, i; 917d1b1f805SChristoph Hellwig 918d1b1f805SChristoph Hellwig if (cmd->data_length < 16) { 919d1b1f805SChristoph Hellwig pr_warn("REPORT LUNS allocation length %u too small\n", 920d1b1f805SChristoph Hellwig cmd->data_length); 921d1b1f805SChristoph Hellwig cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 922d1b1f805SChristoph Hellwig return -EINVAL; 923d1b1f805SChristoph Hellwig } 924d1b1f805SChristoph Hellwig 925d1b1f805SChristoph Hellwig buf = transport_kmap_data_sg(cmd); 926d1b1f805SChristoph Hellwig if (!buf) 927d1b1f805SChristoph Hellwig return -ENOMEM; 928d1b1f805SChristoph Hellwig 929d1b1f805SChristoph Hellwig /* 930d1b1f805SChristoph Hellwig * If no struct se_session pointer is present, this struct se_cmd is 931d1b1f805SChristoph Hellwig * coming via a target_core_mod PASSTHROUGH op, and not through 932d1b1f805SChristoph Hellwig * a $FABRIC_MOD. In that case, report LUN=0 only. 933d1b1f805SChristoph Hellwig */ 934d1b1f805SChristoph Hellwig if (!sess) { 935d1b1f805SChristoph Hellwig int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); 936d1b1f805SChristoph Hellwig lun_count = 1; 937d1b1f805SChristoph Hellwig goto done; 938d1b1f805SChristoph Hellwig } 939d1b1f805SChristoph Hellwig 940d1b1f805SChristoph Hellwig spin_lock_irq(&sess->se_node_acl->device_list_lock); 941d1b1f805SChristoph Hellwig for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 942d1b1f805SChristoph Hellwig deve = sess->se_node_acl->device_list[i]; 943d1b1f805SChristoph Hellwig if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 944d1b1f805SChristoph Hellwig continue; 945d1b1f805SChristoph Hellwig /* 946d1b1f805SChristoph Hellwig * We determine the correct LUN LIST LENGTH even once we 947d1b1f805SChristoph Hellwig * have reached the initial allocation length. 948d1b1f805SChristoph Hellwig * See SPC2-R20 7.19. 949d1b1f805SChristoph Hellwig */ 950d1b1f805SChristoph Hellwig lun_count++; 951d1b1f805SChristoph Hellwig if ((offset + 8) > cmd->data_length) 952d1b1f805SChristoph Hellwig continue; 953d1b1f805SChristoph Hellwig 954d1b1f805SChristoph Hellwig int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); 955d1b1f805SChristoph Hellwig offset += 8; 956d1b1f805SChristoph Hellwig } 957d1b1f805SChristoph Hellwig spin_unlock_irq(&sess->se_node_acl->device_list_lock); 958d1b1f805SChristoph Hellwig 959d1b1f805SChristoph Hellwig /* 960d1b1f805SChristoph Hellwig * See SPC3 r07, page 159. 961d1b1f805SChristoph Hellwig */ 962d1b1f805SChristoph Hellwig done: 963d1b1f805SChristoph Hellwig lun_count *= 8; 964d1b1f805SChristoph Hellwig buf[0] = ((lun_count >> 24) & 0xff); 965d1b1f805SChristoph Hellwig buf[1] = ((lun_count >> 16) & 0xff); 966d1b1f805SChristoph Hellwig buf[2] = ((lun_count >> 8) & 0xff); 967d1b1f805SChristoph Hellwig buf[3] = (lun_count & 0xff); 968d1b1f805SChristoph Hellwig transport_kunmap_data_sg(cmd); 969d1b1f805SChristoph Hellwig 970d1b1f805SChristoph Hellwig target_complete_cmd(cmd, GOOD); 971d1b1f805SChristoph Hellwig return 0; 972d1b1f805SChristoph Hellwig } 9738de530a5SChristoph Hellwig EXPORT_SYMBOL(spc_emulate_report_luns); 974d1b1f805SChristoph Hellwig 9751fd032eeSChristoph Hellwig static int spc_emulate_testunitready(struct se_cmd *cmd) 9761fd032eeSChristoph Hellwig { 9771fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 9781fd032eeSChristoph Hellwig return 0; 9791fd032eeSChristoph Hellwig } 9801fd032eeSChristoph Hellwig 9811fd032eeSChristoph Hellwig int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) 98288455ec4SChristoph Hellwig { 983eba2ca45SNicholas Bellinger struct se_device *dev = cmd->se_dev; 98488455ec4SChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 98588455ec4SChristoph Hellwig 98688455ec4SChristoph Hellwig switch (cdb[0]) { 98788455ec4SChristoph Hellwig case MODE_SELECT: 98888455ec4SChristoph Hellwig *size = cdb[4]; 98988455ec4SChristoph Hellwig break; 99088455ec4SChristoph Hellwig case MODE_SELECT_10: 99188455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 99288455ec4SChristoph Hellwig break; 99388455ec4SChristoph Hellwig case MODE_SENSE: 99488455ec4SChristoph Hellwig *size = cdb[4]; 9951fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 99688455ec4SChristoph Hellwig break; 99788455ec4SChristoph Hellwig case MODE_SENSE_10: 99888455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 9991fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 100088455ec4SChristoph Hellwig break; 100188455ec4SChristoph Hellwig case LOG_SELECT: 100288455ec4SChristoph Hellwig case LOG_SENSE: 100388455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 100488455ec4SChristoph Hellwig break; 100588455ec4SChristoph Hellwig case PERSISTENT_RESERVE_IN: 100688455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1007d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_in; 100888455ec4SChristoph Hellwig break; 100988455ec4SChristoph Hellwig case PERSISTENT_RESERVE_OUT: 101088455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1011d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_out; 101288455ec4SChristoph Hellwig break; 101388455ec4SChristoph Hellwig case RELEASE: 101488455ec4SChristoph Hellwig case RELEASE_10: 101588455ec4SChristoph Hellwig if (cdb[0] == RELEASE_10) 101688455ec4SChristoph Hellwig *size = (cdb[7] << 8) | cdb[8]; 101788455ec4SChristoph Hellwig else 101888455ec4SChristoph Hellwig *size = cmd->data_length; 101988455ec4SChristoph Hellwig 102088455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_release; 102188455ec4SChristoph Hellwig break; 102288455ec4SChristoph Hellwig case RESERVE: 102388455ec4SChristoph Hellwig case RESERVE_10: 102488455ec4SChristoph Hellwig /* 102588455ec4SChristoph Hellwig * The SPC-2 RESERVE does not contain a size in the SCSI CDB. 102688455ec4SChristoph Hellwig * Assume the passthrough or $FABRIC_MOD will tell us about it. 102788455ec4SChristoph Hellwig */ 102888455ec4SChristoph Hellwig if (cdb[0] == RESERVE_10) 102988455ec4SChristoph Hellwig *size = (cdb[7] << 8) | cdb[8]; 103088455ec4SChristoph Hellwig else 103188455ec4SChristoph Hellwig *size = cmd->data_length; 103288455ec4SChristoph Hellwig 103388455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_reserve; 103488455ec4SChristoph Hellwig break; 103588455ec4SChristoph Hellwig case REQUEST_SENSE: 103688455ec4SChristoph Hellwig *size = cdb[4]; 10371fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_request_sense; 103888455ec4SChristoph Hellwig break; 103988455ec4SChristoph Hellwig case INQUIRY: 104088455ec4SChristoph Hellwig *size = (cdb[3] << 8) + cdb[4]; 104188455ec4SChristoph Hellwig 104288455ec4SChristoph Hellwig /* 104388455ec4SChristoph Hellwig * Do implict HEAD_OF_QUEUE processing for INQUIRY. 104488455ec4SChristoph Hellwig * See spc4r17 section 5.3 104588455ec4SChristoph Hellwig */ 104688455ec4SChristoph Hellwig cmd->sam_task_attr = MSG_HEAD_TAG; 10471fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_inquiry; 104888455ec4SChristoph Hellwig break; 104988455ec4SChristoph Hellwig case SECURITY_PROTOCOL_IN: 105088455ec4SChristoph Hellwig case SECURITY_PROTOCOL_OUT: 105188455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 105288455ec4SChristoph Hellwig break; 105388455ec4SChristoph Hellwig case EXTENDED_COPY: 105488455ec4SChristoph Hellwig case READ_ATTRIBUTE: 105588455ec4SChristoph Hellwig case RECEIVE_COPY_RESULTS: 105688455ec4SChristoph Hellwig case WRITE_ATTRIBUTE: 105788455ec4SChristoph Hellwig *size = (cdb[10] << 24) | (cdb[11] << 16) | 105888455ec4SChristoph Hellwig (cdb[12] << 8) | cdb[13]; 105988455ec4SChristoph Hellwig break; 106088455ec4SChristoph Hellwig case RECEIVE_DIAGNOSTIC: 106188455ec4SChristoph Hellwig case SEND_DIAGNOSTIC: 106288455ec4SChristoph Hellwig *size = (cdb[3] << 8) | cdb[4]; 106388455ec4SChristoph Hellwig break; 106488455ec4SChristoph Hellwig case WRITE_BUFFER: 106588455ec4SChristoph Hellwig *size = (cdb[6] << 16) + (cdb[7] << 8) + cdb[8]; 106688455ec4SChristoph Hellwig break; 106788455ec4SChristoph Hellwig case REPORT_LUNS: 1068d1b1f805SChristoph Hellwig cmd->execute_cmd = spc_emulate_report_luns; 106988455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 107088455ec4SChristoph Hellwig /* 107188455ec4SChristoph Hellwig * Do implict HEAD_OF_QUEUE processing for REPORT_LUNS 107288455ec4SChristoph Hellwig * See spc4r17 section 5.3 107388455ec4SChristoph Hellwig */ 107488455ec4SChristoph Hellwig cmd->sam_task_attr = MSG_HEAD_TAG; 107588455ec4SChristoph Hellwig break; 107688455ec4SChristoph Hellwig case TEST_UNIT_READY: 10771fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_testunitready; 1078d6e0175cSChristoph Hellwig *size = 0; 107988455ec4SChristoph Hellwig break; 1080eba2ca45SNicholas Bellinger case MAINTENANCE_IN: 1081eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1082eba2ca45SNicholas Bellinger /* 1083eba2ca45SNicholas Bellinger * MAINTENANCE_IN from SCC-2 1084eba2ca45SNicholas Bellinger * Check for emulated MI_REPORT_TARGET_PGS 1085eba2ca45SNicholas Bellinger */ 1086eba2ca45SNicholas Bellinger if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS && 10870fd97ccfSChristoph Hellwig dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { 1088eba2ca45SNicholas Bellinger cmd->execute_cmd = 1089eba2ca45SNicholas Bellinger target_emulate_report_target_port_groups; 1090eba2ca45SNicholas Bellinger } 1091eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1092eba2ca45SNicholas Bellinger } else { 1093eba2ca45SNicholas Bellinger /* 1094eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1095eba2ca45SNicholas Bellinger */ 1096eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1097eba2ca45SNicholas Bellinger } 1098eba2ca45SNicholas Bellinger break; 1099eba2ca45SNicholas Bellinger case MAINTENANCE_OUT: 1100eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1101eba2ca45SNicholas Bellinger /* 1102eba2ca45SNicholas Bellinger * MAINTENANCE_OUT from SCC-2 1103eba2ca45SNicholas Bellinger * Check for emulated MO_SET_TARGET_PGS. 1104eba2ca45SNicholas Bellinger */ 1105eba2ca45SNicholas Bellinger if (cdb[1] == MO_SET_TARGET_PGS && 11060fd97ccfSChristoph Hellwig dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { 1107eba2ca45SNicholas Bellinger cmd->execute_cmd = 1108eba2ca45SNicholas Bellinger target_emulate_set_target_port_groups; 1109eba2ca45SNicholas Bellinger } 1110eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1111eba2ca45SNicholas Bellinger } else { 1112eba2ca45SNicholas Bellinger /* 1113eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1114eba2ca45SNicholas Bellinger */ 1115eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1116eba2ca45SNicholas Bellinger } 1117eba2ca45SNicholas Bellinger break; 111888455ec4SChristoph Hellwig default: 111988455ec4SChristoph Hellwig pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode" 112088455ec4SChristoph Hellwig " 0x%02x, sending CHECK_CONDITION.\n", 112188455ec4SChristoph Hellwig cmd->se_tfo->get_fabric_name(), cdb[0]); 112288455ec4SChristoph Hellwig cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 112388455ec4SChristoph Hellwig cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 112488455ec4SChristoph Hellwig return -EINVAL; 112588455ec4SChristoph Hellwig } 112688455ec4SChristoph Hellwig 112788455ec4SChristoph Hellwig return 0; 112888455ec4SChristoph Hellwig } 112988455ec4SChristoph Hellwig EXPORT_SYMBOL(spc_parse_cdb); 1130