188455ec4SChristoph Hellwig /* 288455ec4SChristoph Hellwig * SCSI Primary Commands (SPC) parsing and emulation. 388455ec4SChristoph Hellwig * 44c76251eSNicholas Bellinger * (c) Copyright 2002-2013 Datera, Inc. 588455ec4SChristoph Hellwig * 688455ec4SChristoph Hellwig * Nicholas A. Bellinger <nab@kernel.org> 788455ec4SChristoph Hellwig * 888455ec4SChristoph Hellwig * This program is free software; you can redistribute it and/or modify 988455ec4SChristoph Hellwig * it under the terms of the GNU General Public License as published by 1088455ec4SChristoph Hellwig * the Free Software Foundation; either version 2 of the License, or 1188455ec4SChristoph Hellwig * (at your option) any later version. 1288455ec4SChristoph Hellwig * 1388455ec4SChristoph Hellwig * This program is distributed in the hope that it will be useful, 1488455ec4SChristoph Hellwig * but WITHOUT ANY WARRANTY; without even the implied warranty of 1588455ec4SChristoph Hellwig * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1688455ec4SChristoph Hellwig * GNU General Public License for more details. 1788455ec4SChristoph Hellwig * 1888455ec4SChristoph Hellwig * You should have received a copy of the GNU General Public License 1988455ec4SChristoph Hellwig * along with this program; if not, write to the Free Software 2088455ec4SChristoph Hellwig * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 2188455ec4SChristoph Hellwig */ 2288455ec4SChristoph Hellwig 2388455ec4SChristoph Hellwig #include <linux/kernel.h> 2488455ec4SChristoph Hellwig #include <linux/module.h> 2588455ec4SChristoph Hellwig #include <asm/unaligned.h> 2688455ec4SChristoph Hellwig 2788455ec4SChristoph Hellwig #include <scsi/scsi.h> 2888455ec4SChristoph Hellwig #include <scsi/scsi_tcq.h> 2988455ec4SChristoph Hellwig 3088455ec4SChristoph Hellwig #include <target/target_core_base.h> 3188455ec4SChristoph Hellwig #include <target/target_core_backend.h> 3288455ec4SChristoph Hellwig #include <target/target_core_fabric.h> 3388455ec4SChristoph Hellwig 3488455ec4SChristoph Hellwig #include "target_core_internal.h" 35eba2ca45SNicholas Bellinger #include "target_core_alua.h" 3688455ec4SChristoph Hellwig #include "target_core_pr.h" 3788455ec4SChristoph Hellwig #include "target_core_ua.h" 3804b1b795SNicholas Bellinger #include "target_core_xcopy.h" 3988455ec4SChristoph Hellwig 401fd032eeSChristoph Hellwig static void spc_fill_alua_data(struct se_port *port, unsigned char *buf) 411fd032eeSChristoph Hellwig { 421fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 431fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 441fd032eeSChristoph Hellwig 451fd032eeSChristoph Hellwig /* 461fd032eeSChristoph Hellwig * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS. 471fd032eeSChristoph Hellwig */ 481fd032eeSChristoph Hellwig buf[5] = 0x80; 491fd032eeSChristoph Hellwig 501fd032eeSChristoph Hellwig /* 51125d0119SHannes Reinecke * Set TPGS field for explicit and/or implicit ALUA access type 521fd032eeSChristoph Hellwig * and opteration. 531fd032eeSChristoph Hellwig * 541fd032eeSChristoph Hellwig * See spc4r17 section 6.4.2 Table 135 551fd032eeSChristoph Hellwig */ 561fd032eeSChristoph Hellwig if (!port) 571fd032eeSChristoph Hellwig return; 581fd032eeSChristoph Hellwig tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 591fd032eeSChristoph Hellwig if (!tg_pt_gp_mem) 601fd032eeSChristoph Hellwig return; 611fd032eeSChristoph Hellwig 621fd032eeSChristoph Hellwig spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 631fd032eeSChristoph Hellwig tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 641fd032eeSChristoph Hellwig if (tg_pt_gp) 651fd032eeSChristoph Hellwig buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; 661fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 671fd032eeSChristoph Hellwig } 681fd032eeSChristoph Hellwig 690dfa1c5dSHannes Reinecke sense_reason_t 700dfa1c5dSHannes Reinecke spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) 711fd032eeSChristoph Hellwig { 721fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 731fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 74d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 751fd032eeSChristoph Hellwig 761fd032eeSChristoph Hellwig /* Set RMB (removable media) for tape devices */ 771fd032eeSChristoph Hellwig if (dev->transport->get_device_type(dev) == TYPE_TAPE) 781fd032eeSChristoph Hellwig buf[1] = 0x80; 791fd032eeSChristoph Hellwig 8048c2567dSChristoph Hellwig buf[2] = 0x05; /* SPC-3 */ 811fd032eeSChristoph Hellwig 821fd032eeSChristoph Hellwig /* 831fd032eeSChristoph Hellwig * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 841fd032eeSChristoph Hellwig * 851fd032eeSChristoph Hellwig * SPC4 says: 861fd032eeSChristoph Hellwig * A RESPONSE DATA FORMAT field set to 2h indicates that the 871fd032eeSChristoph Hellwig * standard INQUIRY data is in the format defined in this 881fd032eeSChristoph Hellwig * standard. Response data format values less than 2h are 891fd032eeSChristoph Hellwig * obsolete. Response data format values greater than 2h are 901fd032eeSChristoph Hellwig * reserved. 911fd032eeSChristoph Hellwig */ 921fd032eeSChristoph Hellwig buf[3] = 2; 931fd032eeSChristoph Hellwig 941fd032eeSChristoph Hellwig /* 951fd032eeSChristoph Hellwig * Enable SCCS and TPGS fields for Emulated ALUA 961fd032eeSChristoph Hellwig */ 971fd032eeSChristoph Hellwig spc_fill_alua_data(lun->lun_sep, buf); 981fd032eeSChristoph Hellwig 99d397a445SNicholas Bellinger /* 100d397a445SNicholas Bellinger * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY 101d397a445SNicholas Bellinger */ 102d397a445SNicholas Bellinger if (dev->dev_attrib.emulate_3pc) 103d397a445SNicholas Bellinger buf[5] |= 0x8; 104bdbad2bdSNicholas Bellinger /* 105d2c5304cSNicholas Bellinger * Set Protection (PROTECT) bit when DIF has been enabled on the 1069ef5466eSNicholas Bellinger * device, and the fabric supports VERIFY + PASS. Also report 1079ef5466eSNicholas Bellinger * PROTECT=1 if sess_prot_type has been configured to allow T10-PI 1089ef5466eSNicholas Bellinger * to unprotected devices. 109bdbad2bdSNicholas Bellinger */ 110d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 1119ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || cmd->se_sess->sess_prot_type) 112bdbad2bdSNicholas Bellinger buf[5] |= 0x1; 113d2c5304cSNicholas Bellinger } 114d397a445SNicholas Bellinger 1151fd032eeSChristoph Hellwig buf[7] = 0x2; /* CmdQue=1 */ 1161fd032eeSChristoph Hellwig 117ee60bddbSNicholas Bellinger memcpy(&buf[8], "LIO-ORG ", 8); 118ee60bddbSNicholas Bellinger memset(&buf[16], 0x20, 16); 119ee60bddbSNicholas Bellinger memcpy(&buf[16], dev->t10_wwn.model, 120ee60bddbSNicholas Bellinger min_t(size_t, strlen(dev->t10_wwn.model), 16)); 121ee60bddbSNicholas Bellinger memcpy(&buf[32], dev->t10_wwn.revision, 122ee60bddbSNicholas Bellinger min_t(size_t, strlen(dev->t10_wwn.revision), 4)); 1231fd032eeSChristoph Hellwig buf[4] = 31; /* Set additional length to 31 */ 1241fd032eeSChristoph Hellwig 1251fd032eeSChristoph Hellwig return 0; 1261fd032eeSChristoph Hellwig } 1270dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_inquiry_std); 1281fd032eeSChristoph Hellwig 1291fd032eeSChristoph Hellwig /* unit serial number */ 130de103c93SChristoph Hellwig static sense_reason_t 131de103c93SChristoph Hellwig spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 1321fd032eeSChristoph Hellwig { 1331fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1349aff64e1SChristophe Vu-Brugier u16 len; 1351fd032eeSChristoph Hellwig 1360fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 1379aff64e1SChristophe Vu-Brugier len = sprintf(&buf[4], "%s", dev->t10_wwn.unit_serial); 1381fd032eeSChristoph Hellwig len++; /* Extra Byte for NULL Terminator */ 1391fd032eeSChristoph Hellwig buf[3] = len; 1401fd032eeSChristoph Hellwig } 1411fd032eeSChristoph Hellwig return 0; 1421fd032eeSChristoph Hellwig } 1431fd032eeSChristoph Hellwig 14468366026SNicholas Bellinger void spc_parse_naa_6h_vendor_specific(struct se_device *dev, 1451fd032eeSChristoph Hellwig unsigned char *buf) 1461fd032eeSChristoph Hellwig { 1470fd97ccfSChristoph Hellwig unsigned char *p = &dev->t10_wwn.unit_serial[0]; 1481fd032eeSChristoph Hellwig int cnt; 1491fd032eeSChristoph Hellwig bool next = true; 1501fd032eeSChristoph Hellwig 1511fd032eeSChristoph Hellwig /* 1521fd032eeSChristoph Hellwig * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 1531fd032eeSChristoph Hellwig * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 1541fd032eeSChristoph Hellwig * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 1551fd032eeSChristoph Hellwig * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 1561fd032eeSChristoph Hellwig * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 1571fd032eeSChristoph Hellwig * per device uniqeness. 1581fd032eeSChristoph Hellwig */ 1591fd032eeSChristoph Hellwig for (cnt = 0; *p && cnt < 13; p++) { 1601fd032eeSChristoph Hellwig int val = hex_to_bin(*p); 1611fd032eeSChristoph Hellwig 1621fd032eeSChristoph Hellwig if (val < 0) 1631fd032eeSChristoph Hellwig continue; 1641fd032eeSChristoph Hellwig 1651fd032eeSChristoph Hellwig if (next) { 1661fd032eeSChristoph Hellwig next = false; 1671fd032eeSChristoph Hellwig buf[cnt++] |= val; 1681fd032eeSChristoph Hellwig } else { 1691fd032eeSChristoph Hellwig next = true; 1701fd032eeSChristoph Hellwig buf[cnt] = val << 4; 1711fd032eeSChristoph Hellwig } 1721fd032eeSChristoph Hellwig } 1731fd032eeSChristoph Hellwig } 1741fd032eeSChristoph Hellwig 1751fd032eeSChristoph Hellwig /* 1761fd032eeSChristoph Hellwig * Device identification VPD, for a complete list of 1771fd032eeSChristoph Hellwig * DESIGNATOR TYPEs see spc4r17 Table 459. 1781fd032eeSChristoph Hellwig */ 1790dfa1c5dSHannes Reinecke sense_reason_t 180de103c93SChristoph Hellwig spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 1811fd032eeSChristoph Hellwig { 1821fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1831fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 1841fd032eeSChristoph Hellwig struct se_port *port = NULL; 1851fd032eeSChristoph Hellwig struct se_portal_group *tpg = NULL; 1861fd032eeSChristoph Hellwig struct t10_alua_lu_gp_member *lu_gp_mem; 1871fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 1881fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 1890fd97ccfSChristoph Hellwig unsigned char *prod = &dev->t10_wwn.model[0]; 1901fd032eeSChristoph Hellwig u32 prod_len; 1911fd032eeSChristoph Hellwig u32 unit_serial_len, off = 0; 1921fd032eeSChristoph Hellwig u16 len = 0, id_len; 1931fd032eeSChristoph Hellwig 1941fd032eeSChristoph Hellwig off = 4; 1951fd032eeSChristoph Hellwig 1961fd032eeSChristoph Hellwig /* 1971fd032eeSChristoph Hellwig * NAA IEEE Registered Extended Assigned designator format, see 1981fd032eeSChristoph Hellwig * spc4r17 section 7.7.3.6.5 1991fd032eeSChristoph Hellwig * 2001fd032eeSChristoph Hellwig * We depend upon a target_core_mod/ConfigFS provided 2011fd032eeSChristoph Hellwig * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 2021fd032eeSChristoph Hellwig * value in order to return the NAA id. 2031fd032eeSChristoph Hellwig */ 2040fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL)) 2051fd032eeSChristoph Hellwig goto check_t10_vend_desc; 2061fd032eeSChristoph Hellwig 2071fd032eeSChristoph Hellwig /* CODE SET == Binary */ 2081fd032eeSChristoph Hellwig buf[off++] = 0x1; 2091fd032eeSChristoph Hellwig 2101fd032eeSChristoph Hellwig /* Set ASSOCIATION == addressed logical unit: 0)b */ 2111fd032eeSChristoph Hellwig buf[off] = 0x00; 2121fd032eeSChristoph Hellwig 2131fd032eeSChristoph Hellwig /* Identifier/Designator type == NAA identifier */ 2141fd032eeSChristoph Hellwig buf[off++] |= 0x3; 2151fd032eeSChristoph Hellwig off++; 2161fd032eeSChristoph Hellwig 2171fd032eeSChristoph Hellwig /* Identifier/Designator length */ 2181fd032eeSChristoph Hellwig buf[off++] = 0x10; 2191fd032eeSChristoph Hellwig 2201fd032eeSChristoph Hellwig /* 2211fd032eeSChristoph Hellwig * Start NAA IEEE Registered Extended Identifier/Designator 2221fd032eeSChristoph Hellwig */ 2231fd032eeSChristoph Hellwig buf[off++] = (0x6 << 4); 2241fd032eeSChristoph Hellwig 2251fd032eeSChristoph Hellwig /* 2261fd032eeSChristoph Hellwig * Use OpenFabrics IEEE Company ID: 00 14 05 2271fd032eeSChristoph Hellwig */ 2281fd032eeSChristoph Hellwig buf[off++] = 0x01; 2291fd032eeSChristoph Hellwig buf[off++] = 0x40; 2301fd032eeSChristoph Hellwig buf[off] = (0x5 << 4); 2311fd032eeSChristoph Hellwig 2321fd032eeSChristoph Hellwig /* 2331fd032eeSChristoph Hellwig * Return ConfigFS Unit Serial Number information for 2341fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER and 2351fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION 2361fd032eeSChristoph Hellwig */ 2371fd032eeSChristoph Hellwig spc_parse_naa_6h_vendor_specific(dev, &buf[off]); 2381fd032eeSChristoph Hellwig 2391fd032eeSChristoph Hellwig len = 20; 2401fd032eeSChristoph Hellwig off = (len + 4); 2411fd032eeSChristoph Hellwig 2421fd032eeSChristoph Hellwig check_t10_vend_desc: 2431fd032eeSChristoph Hellwig /* 2441fd032eeSChristoph Hellwig * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 2451fd032eeSChristoph Hellwig */ 2461fd032eeSChristoph Hellwig id_len = 8; /* For Vendor field */ 2471fd032eeSChristoph Hellwig prod_len = 4; /* For VPD Header */ 2481fd032eeSChristoph Hellwig prod_len += 8; /* For Vendor field */ 2491fd032eeSChristoph Hellwig prod_len += strlen(prod); 2501fd032eeSChristoph Hellwig prod_len++; /* For : */ 2511fd032eeSChristoph Hellwig 2520fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 2530fd97ccfSChristoph Hellwig unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]); 2541fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 2551fd032eeSChristoph Hellwig 2561fd032eeSChristoph Hellwig id_len += sprintf(&buf[off+12], "%s:%s", prod, 2570fd97ccfSChristoph Hellwig &dev->t10_wwn.unit_serial[0]); 2581fd032eeSChristoph Hellwig } 2591fd032eeSChristoph Hellwig buf[off] = 0x2; /* ASCII */ 2601fd032eeSChristoph Hellwig buf[off+1] = 0x1; /* T10 Vendor ID */ 2611fd032eeSChristoph Hellwig buf[off+2] = 0x0; 2621fd032eeSChristoph Hellwig memcpy(&buf[off+4], "LIO-ORG", 8); 2631fd032eeSChristoph Hellwig /* Extra Byte for NULL Terminator */ 2641fd032eeSChristoph Hellwig id_len++; 2651fd032eeSChristoph Hellwig /* Identifier Length */ 2661fd032eeSChristoph Hellwig buf[off+3] = id_len; 2671fd032eeSChristoph Hellwig /* Header size for Designation descriptor */ 2681fd032eeSChristoph Hellwig len += (id_len + 4); 2691fd032eeSChristoph Hellwig off += (id_len + 4); 2701fd032eeSChristoph Hellwig /* 2711fd032eeSChristoph Hellwig * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD 2721fd032eeSChristoph Hellwig */ 2731fd032eeSChristoph Hellwig port = lun->lun_sep; 2741fd032eeSChristoph Hellwig if (port) { 2751fd032eeSChristoph Hellwig struct t10_alua_lu_gp *lu_gp; 276fbfe858fSHannes Reinecke u32 padding, scsi_name_len, scsi_target_len; 2771fd032eeSChristoph Hellwig u16 lu_gp_id = 0; 2781fd032eeSChristoph Hellwig u16 tg_pt_gp_id = 0; 2791fd032eeSChristoph Hellwig u16 tpgt; 2801fd032eeSChristoph Hellwig 2811fd032eeSChristoph Hellwig tpg = port->sep_tpg; 2821fd032eeSChristoph Hellwig /* 2831fd032eeSChristoph Hellwig * Relative target port identifer, see spc4r17 2841fd032eeSChristoph Hellwig * section 7.7.3.7 2851fd032eeSChristoph Hellwig * 2861fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2871fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2881fd032eeSChristoph Hellwig */ 2892aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 2901fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 2911fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 2921fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 2931fd032eeSChristoph Hellwig buf[off] |= 0x10; 2941fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Relative target port identifer */ 2951fd032eeSChristoph Hellwig buf[off++] |= 0x4; 2961fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 2971fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 2981fd032eeSChristoph Hellwig /* Skip over Obsolete field in RTPI payload 2991fd032eeSChristoph Hellwig * in Table 472 */ 3001fd032eeSChristoph Hellwig off += 2; 3011fd032eeSChristoph Hellwig buf[off++] = ((port->sep_rtpi >> 8) & 0xff); 3021fd032eeSChristoph Hellwig buf[off++] = (port->sep_rtpi & 0xff); 3031fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3041fd032eeSChristoph Hellwig /* 3051fd032eeSChristoph Hellwig * Target port group identifier, see spc4r17 3061fd032eeSChristoph Hellwig * section 7.7.3.8 3071fd032eeSChristoph Hellwig * 3081fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3091fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3101fd032eeSChristoph Hellwig */ 3111fd032eeSChristoph Hellwig tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 3121fd032eeSChristoph Hellwig if (!tg_pt_gp_mem) 3131fd032eeSChristoph Hellwig goto check_lu_gp; 3141fd032eeSChristoph Hellwig 3151fd032eeSChristoph Hellwig spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3161fd032eeSChristoph Hellwig tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 3171fd032eeSChristoph Hellwig if (!tg_pt_gp) { 3181fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3191fd032eeSChristoph Hellwig goto check_lu_gp; 3201fd032eeSChristoph Hellwig } 3211fd032eeSChristoph Hellwig tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 3221fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3231fd032eeSChristoph Hellwig 3242aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3251fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3261fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3271fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3281fd032eeSChristoph Hellwig buf[off] |= 0x10; 3291fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Target port group identifier */ 3301fd032eeSChristoph Hellwig buf[off++] |= 0x5; 3311fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3321fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3331fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3341fd032eeSChristoph Hellwig buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); 3351fd032eeSChristoph Hellwig buf[off++] = (tg_pt_gp_id & 0xff); 3361fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3371fd032eeSChristoph Hellwig /* 3381fd032eeSChristoph Hellwig * Logical Unit Group identifier, see spc4r17 3391fd032eeSChristoph Hellwig * section 7.7.3.8 3401fd032eeSChristoph Hellwig */ 3411fd032eeSChristoph Hellwig check_lu_gp: 3421fd032eeSChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 3431fd032eeSChristoph Hellwig if (!lu_gp_mem) 3441fd032eeSChristoph Hellwig goto check_scsi_name; 3451fd032eeSChristoph Hellwig 3461fd032eeSChristoph Hellwig spin_lock(&lu_gp_mem->lu_gp_mem_lock); 3471fd032eeSChristoph Hellwig lu_gp = lu_gp_mem->lu_gp; 3481fd032eeSChristoph Hellwig if (!lu_gp) { 3491fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3501fd032eeSChristoph Hellwig goto check_scsi_name; 3511fd032eeSChristoph Hellwig } 3521fd032eeSChristoph Hellwig lu_gp_id = lu_gp->lu_gp_id; 3531fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3541fd032eeSChristoph Hellwig 3551fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3561fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Logical Unit Group identifier */ 3571fd032eeSChristoph Hellwig buf[off++] |= 0x6; 3581fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3591fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3601fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3611fd032eeSChristoph Hellwig buf[off++] = ((lu_gp_id >> 8) & 0xff); 3621fd032eeSChristoph Hellwig buf[off++] = (lu_gp_id & 0xff); 3631fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3641fd032eeSChristoph Hellwig /* 3651fd032eeSChristoph Hellwig * SCSI name string designator, see spc4r17 3661fd032eeSChristoph Hellwig * section 7.7.3.11 3671fd032eeSChristoph Hellwig * 3681fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3691fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3701fd032eeSChristoph Hellwig */ 3711fd032eeSChristoph Hellwig check_scsi_name: 3722aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3731fd032eeSChristoph Hellwig buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 3741fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3751fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3761fd032eeSChristoph Hellwig buf[off] |= 0x10; 3771fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == SCSI name string */ 3781fd032eeSChristoph Hellwig buf[off++] |= 0x8; 3791fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved and length */ 3801fd032eeSChristoph Hellwig /* 3811fd032eeSChristoph Hellwig * SCSI name string identifer containing, $FABRIC_MOD 3821fd032eeSChristoph Hellwig * dependent information. For LIO-Target and iSCSI 3831fd032eeSChristoph Hellwig * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 3841fd032eeSChristoph Hellwig * UTF-8 encoding. 3851fd032eeSChristoph Hellwig */ 3861fd032eeSChristoph Hellwig tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 3871fd032eeSChristoph Hellwig scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 3881fd032eeSChristoph Hellwig tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 3891fd032eeSChristoph Hellwig scsi_name_len += 1 /* Include NULL terminator */; 3901fd032eeSChristoph Hellwig /* 3911fd032eeSChristoph Hellwig * The null-terminated, null-padded (see 4.4.2) SCSI 3921fd032eeSChristoph Hellwig * NAME STRING field contains a UTF-8 format string. 3931fd032eeSChristoph Hellwig * The number of bytes in the SCSI NAME STRING field 3941fd032eeSChristoph Hellwig * (i.e., the value in the DESIGNATOR LENGTH field) 3951fd032eeSChristoph Hellwig * shall be no larger than 256 and shall be a multiple 3961fd032eeSChristoph Hellwig * of four. 3971fd032eeSChristoph Hellwig */ 39803ba84caSHannes Reinecke padding = ((-scsi_name_len) & 3); 3991fd032eeSChristoph Hellwig if (padding) 4001fd032eeSChristoph Hellwig scsi_name_len += padding; 40103ba84caSHannes Reinecke if (scsi_name_len > 256) 40203ba84caSHannes Reinecke scsi_name_len = 256; 4031fd032eeSChristoph Hellwig 4041fd032eeSChristoph Hellwig buf[off-1] = scsi_name_len; 4051fd032eeSChristoph Hellwig off += scsi_name_len; 4061fd032eeSChristoph Hellwig /* Header size + Designation descriptor */ 4071fd032eeSChristoph Hellwig len += (scsi_name_len + 4); 408fbfe858fSHannes Reinecke 409fbfe858fSHannes Reinecke /* 410fbfe858fSHannes Reinecke * Target device designator 411fbfe858fSHannes Reinecke */ 4122aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 413fbfe858fSHannes Reinecke buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 414fbfe858fSHannes Reinecke buf[off] = 0x80; /* Set PIV=1 */ 415fbfe858fSHannes Reinecke /* Set ASSOCIATION == target device: 10b */ 416fbfe858fSHannes Reinecke buf[off] |= 0x20; 417fbfe858fSHannes Reinecke /* DESIGNATOR TYPE == SCSI name string */ 418fbfe858fSHannes Reinecke buf[off++] |= 0x8; 419fbfe858fSHannes Reinecke off += 2; /* Skip over Reserved and length */ 420fbfe858fSHannes Reinecke /* 421fbfe858fSHannes Reinecke * SCSI name string identifer containing, $FABRIC_MOD 422fbfe858fSHannes Reinecke * dependent information. For LIO-Target and iSCSI 423fbfe858fSHannes Reinecke * Target Port, this means "<iSCSI name>" in 424fbfe858fSHannes Reinecke * UTF-8 encoding. 425fbfe858fSHannes Reinecke */ 426fbfe858fSHannes Reinecke scsi_target_len = sprintf(&buf[off], "%s", 427fbfe858fSHannes Reinecke tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 428fbfe858fSHannes Reinecke scsi_target_len += 1 /* Include NULL terminator */; 429fbfe858fSHannes Reinecke /* 430fbfe858fSHannes Reinecke * The null-terminated, null-padded (see 4.4.2) SCSI 431fbfe858fSHannes Reinecke * NAME STRING field contains a UTF-8 format string. 432fbfe858fSHannes Reinecke * The number of bytes in the SCSI NAME STRING field 433fbfe858fSHannes Reinecke * (i.e., the value in the DESIGNATOR LENGTH field) 434fbfe858fSHannes Reinecke * shall be no larger than 256 and shall be a multiple 435fbfe858fSHannes Reinecke * of four. 436fbfe858fSHannes Reinecke */ 437fbfe858fSHannes Reinecke padding = ((-scsi_target_len) & 3); 438fbfe858fSHannes Reinecke if (padding) 439fbfe858fSHannes Reinecke scsi_target_len += padding; 4406a16d7beSRoland Dreier if (scsi_target_len > 256) 4416a16d7beSRoland Dreier scsi_target_len = 256; 442fbfe858fSHannes Reinecke 443fbfe858fSHannes Reinecke buf[off-1] = scsi_target_len; 444fbfe858fSHannes Reinecke off += scsi_target_len; 445fbfe858fSHannes Reinecke 446fbfe858fSHannes Reinecke /* Header size + Designation descriptor */ 447fbfe858fSHannes Reinecke len += (scsi_target_len + 4); 4481fd032eeSChristoph Hellwig } 4491fd032eeSChristoph Hellwig buf[2] = ((len >> 8) & 0xff); 4501fd032eeSChristoph Hellwig buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ 4511fd032eeSChristoph Hellwig return 0; 4521fd032eeSChristoph Hellwig } 4530dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_evpd_83); 4541fd032eeSChristoph Hellwig 4551fd032eeSChristoph Hellwig /* Extended INQUIRY Data VPD Page */ 456de103c93SChristoph Hellwig static sense_reason_t 457de103c93SChristoph Hellwig spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 4581fd032eeSChristoph Hellwig { 459d0c8b259SNicholas Bellinger struct se_device *dev = cmd->se_dev; 460d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 461d0c8b259SNicholas Bellinger 4621fd032eeSChristoph Hellwig buf[3] = 0x3c; 46343bb95c7SNicholas Bellinger /* 46443bb95c7SNicholas Bellinger * Set GRD_CHK + REF_CHK for TYPE1 protection, or GRD_CHK 46543bb95c7SNicholas Bellinger * only for TYPE3 protection. 46643bb95c7SNicholas Bellinger */ 467d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 4689ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT || 4699ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE1_PROT) 47043bb95c7SNicholas Bellinger buf[4] = 0x5; 4719ef5466eSNicholas Bellinger else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT || 4729ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE3_PROT) 47343bb95c7SNicholas Bellinger buf[4] = 0x4; 474d2c5304cSNicholas Bellinger } 47543bb95c7SNicholas Bellinger 4761fd032eeSChristoph Hellwig /* Set HEADSUP, ORDSUP, SIMPSUP */ 4771fd032eeSChristoph Hellwig buf[5] = 0x07; 4781fd032eeSChristoph Hellwig 4791fd032eeSChristoph Hellwig /* If WriteCache emulation is enabled, set V_SUP */ 480814e5b45SChristoph Hellwig if (target_check_wce(dev)) 4811fd032eeSChristoph Hellwig buf[6] = 0x01; 482c66094bfSHannes Reinecke /* If an LBA map is present set R_SUP */ 483c66094bfSHannes Reinecke spin_lock(&cmd->se_dev->t10_alua.lba_map_lock); 484c66094bfSHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 485c66094bfSHannes Reinecke buf[8] = 0x10; 486c66094bfSHannes Reinecke spin_unlock(&cmd->se_dev->t10_alua.lba_map_lock); 4871fd032eeSChristoph Hellwig return 0; 4881fd032eeSChristoph Hellwig } 4891fd032eeSChristoph Hellwig 4901fd032eeSChristoph Hellwig /* Block Limits VPD page */ 491de103c93SChristoph Hellwig static sense_reason_t 492de103c93SChristoph Hellwig spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 4931fd032eeSChristoph Hellwig { 4941fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 4951fd032eeSChristoph Hellwig int have_tp = 0; 4967f7caf6aSAndy Grover int opt, min; 4971fd032eeSChristoph Hellwig 4981fd032eeSChristoph Hellwig /* 4991fd032eeSChristoph Hellwig * Following spc3r22 section 6.5.3 Block Limits VPD page, when 5001fd032eeSChristoph Hellwig * emulate_tpu=1 or emulate_tpws=1 we will be expect a 5011fd032eeSChristoph Hellwig * different page length for Thin Provisioning. 5021fd032eeSChristoph Hellwig */ 5030fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws) 5041fd032eeSChristoph Hellwig have_tp = 1; 5051fd032eeSChristoph Hellwig 5061fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5071fd032eeSChristoph Hellwig buf[3] = have_tp ? 0x3c : 0x10; 5081fd032eeSChristoph Hellwig 5091fd032eeSChristoph Hellwig /* Set WSNZ to 1 */ 5101fd032eeSChristoph Hellwig buf[4] = 0x01; 5110123a9ecSNicholas Bellinger /* 5120123a9ecSNicholas Bellinger * Set MAXIMUM COMPARE AND WRITE LENGTH 5130123a9ecSNicholas Bellinger */ 5140123a9ecSNicholas Bellinger if (dev->dev_attrib.emulate_caw) 5150123a9ecSNicholas Bellinger buf[5] = 0x01; 5161fd032eeSChristoph Hellwig 5171fd032eeSChristoph Hellwig /* 5181fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH GRANULARITY 5191fd032eeSChristoph Hellwig */ 5207f7caf6aSAndy Grover if (dev->transport->get_io_min && (min = dev->transport->get_io_min(dev))) 5217f7caf6aSAndy Grover put_unaligned_be16(min / dev->dev_attrib.block_size, &buf[6]); 5227f7caf6aSAndy Grover else 5231fd032eeSChristoph Hellwig put_unaligned_be16(1, &buf[6]); 5241fd032eeSChristoph Hellwig 5251fd032eeSChristoph Hellwig /* 5261fd032eeSChristoph Hellwig * Set MAXIMUM TRANSFER LENGTH 5271fd032eeSChristoph Hellwig */ 528046ba642SNicholas Bellinger put_unaligned_be32(dev->dev_attrib.hw_max_sectors, &buf[8]); 5291fd032eeSChristoph Hellwig 5301fd032eeSChristoph Hellwig /* 5311fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH 5321fd032eeSChristoph Hellwig */ 5337f7caf6aSAndy Grover if (dev->transport->get_io_opt && (opt = dev->transport->get_io_opt(dev))) 5347f7caf6aSAndy Grover put_unaligned_be32(opt / dev->dev_attrib.block_size, &buf[12]); 5357f7caf6aSAndy Grover else 5360fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]); 5371fd032eeSChristoph Hellwig 5381fd032eeSChristoph Hellwig /* 5391fd032eeSChristoph Hellwig * Exit now if we don't support TP. 5401fd032eeSChristoph Hellwig */ 5411fd032eeSChristoph Hellwig if (!have_tp) 542773cbaf7SNicholas Bellinger goto max_write_same; 5431fd032eeSChristoph Hellwig 5441fd032eeSChristoph Hellwig /* 5451fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP LBA COUNT 5461fd032eeSChristoph Hellwig */ 5470fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_lba_count, &buf[20]); 5481fd032eeSChristoph Hellwig 5491fd032eeSChristoph Hellwig /* 5501fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 5511fd032eeSChristoph Hellwig */ 5520fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_block_desc_count, 5531fd032eeSChristoph Hellwig &buf[24]); 5541fd032eeSChristoph Hellwig 5551fd032eeSChristoph Hellwig /* 5561fd032eeSChristoph Hellwig * Set OPTIMAL UNMAP GRANULARITY 5571fd032eeSChristoph Hellwig */ 5580fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity, &buf[28]); 5591fd032eeSChristoph Hellwig 5601fd032eeSChristoph Hellwig /* 5611fd032eeSChristoph Hellwig * UNMAP GRANULARITY ALIGNMENT 5621fd032eeSChristoph Hellwig */ 5630fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity_alignment, 5641fd032eeSChristoph Hellwig &buf[32]); 5650fd97ccfSChristoph Hellwig if (dev->dev_attrib.unmap_granularity_alignment != 0) 5661fd032eeSChristoph Hellwig buf[32] |= 0x80; /* Set the UGAVALID bit */ 5671fd032eeSChristoph Hellwig 568773cbaf7SNicholas Bellinger /* 569773cbaf7SNicholas Bellinger * MAXIMUM WRITE SAME LENGTH 570773cbaf7SNicholas Bellinger */ 571773cbaf7SNicholas Bellinger max_write_same: 572773cbaf7SNicholas Bellinger put_unaligned_be64(dev->dev_attrib.max_write_same_len, &buf[36]); 573773cbaf7SNicholas Bellinger 5741fd032eeSChristoph Hellwig return 0; 5751fd032eeSChristoph Hellwig } 5761fd032eeSChristoph Hellwig 5771fd032eeSChristoph Hellwig /* Block Device Characteristics VPD page */ 578de103c93SChristoph Hellwig static sense_reason_t 579de103c93SChristoph Hellwig spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 5801fd032eeSChristoph Hellwig { 5811fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5821fd032eeSChristoph Hellwig 5831fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5841fd032eeSChristoph Hellwig buf[3] = 0x3c; 5850fd97ccfSChristoph Hellwig buf[5] = dev->dev_attrib.is_nonrot ? 1 : 0; 5861fd032eeSChristoph Hellwig 5871fd032eeSChristoph Hellwig return 0; 5881fd032eeSChristoph Hellwig } 5891fd032eeSChristoph Hellwig 5901fd032eeSChristoph Hellwig /* Thin Provisioning VPD */ 591de103c93SChristoph Hellwig static sense_reason_t 592de103c93SChristoph Hellwig spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 5931fd032eeSChristoph Hellwig { 5941fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5951fd032eeSChristoph Hellwig 5961fd032eeSChristoph Hellwig /* 5971fd032eeSChristoph Hellwig * From spc3r22 section 6.5.4 Thin Provisioning VPD page: 5981fd032eeSChristoph Hellwig * 5991fd032eeSChristoph Hellwig * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 6001fd032eeSChristoph Hellwig * zero, then the page length shall be set to 0004h. If the DP bit 6011fd032eeSChristoph Hellwig * is set to one, then the page length shall be set to the value 6021fd032eeSChristoph Hellwig * defined in table 162. 6031fd032eeSChristoph Hellwig */ 6041fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 6051fd032eeSChristoph Hellwig 6061fd032eeSChristoph Hellwig /* 6071fd032eeSChristoph Hellwig * Set Hardcoded length mentioned above for DP=0 6081fd032eeSChristoph Hellwig */ 6091fd032eeSChristoph Hellwig put_unaligned_be16(0x0004, &buf[2]); 6101fd032eeSChristoph Hellwig 6111fd032eeSChristoph Hellwig /* 6121fd032eeSChristoph Hellwig * The THRESHOLD EXPONENT field indicates the threshold set size in 6131fd032eeSChristoph Hellwig * LBAs as a power of 2 (i.e., the threshold set size is equal to 6141fd032eeSChristoph Hellwig * 2(threshold exponent)). 6151fd032eeSChristoph Hellwig * 6161fd032eeSChristoph Hellwig * Note that this is currently set to 0x00 as mkp says it will be 6171fd032eeSChristoph Hellwig * changing again. We can enable this once it has settled in T10 6181fd032eeSChristoph Hellwig * and is actually used by Linux/SCSI ML code. 6191fd032eeSChristoph Hellwig */ 6201fd032eeSChristoph Hellwig buf[4] = 0x00; 6211fd032eeSChristoph Hellwig 6221fd032eeSChristoph Hellwig /* 6231fd032eeSChristoph Hellwig * A TPU bit set to one indicates that the device server supports 6241fd032eeSChristoph Hellwig * the UNMAP command (see 5.25). A TPU bit set to zero indicates 6251fd032eeSChristoph Hellwig * that the device server does not support the UNMAP command. 6261fd032eeSChristoph Hellwig */ 6270fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu != 0) 6281fd032eeSChristoph Hellwig buf[5] = 0x80; 6291fd032eeSChristoph Hellwig 6301fd032eeSChristoph Hellwig /* 6311fd032eeSChristoph Hellwig * A TPWS bit set to one indicates that the device server supports 6321fd032eeSChristoph Hellwig * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 6331fd032eeSChristoph Hellwig * A TPWS bit set to zero indicates that the device server does not 6341fd032eeSChristoph Hellwig * support the use of the WRITE SAME (16) command to unmap LBAs. 6351fd032eeSChristoph Hellwig */ 6360fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpws != 0) 637aa04dae4SNicholas Bellinger buf[5] |= 0x40 | 0x20; 6381fd032eeSChristoph Hellwig 6391fd032eeSChristoph Hellwig return 0; 6401fd032eeSChristoph Hellwig } 6411fd032eeSChristoph Hellwig 642c66094bfSHannes Reinecke /* Referrals VPD page */ 643c66094bfSHannes Reinecke static sense_reason_t 644c66094bfSHannes Reinecke spc_emulate_evpd_b3(struct se_cmd *cmd, unsigned char *buf) 645c66094bfSHannes Reinecke { 646c66094bfSHannes Reinecke struct se_device *dev = cmd->se_dev; 647c66094bfSHannes Reinecke 648c66094bfSHannes Reinecke buf[0] = dev->transport->get_device_type(dev); 649c66094bfSHannes Reinecke buf[3] = 0x0c; 650c66094bfSHannes Reinecke put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[8]); 651096b4995SSebastian Herbszt put_unaligned_be32(dev->t10_alua.lba_map_segment_multiplier, &buf[12]); 652c66094bfSHannes Reinecke 653c66094bfSHannes Reinecke return 0; 654c66094bfSHannes Reinecke } 655c66094bfSHannes Reinecke 656de103c93SChristoph Hellwig static sense_reason_t 657de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 6581fd032eeSChristoph Hellwig 6591fd032eeSChristoph Hellwig static struct { 6601fd032eeSChristoph Hellwig uint8_t page; 661de103c93SChristoph Hellwig sense_reason_t (*emulate)(struct se_cmd *, unsigned char *); 6621fd032eeSChristoph Hellwig } evpd_handlers[] = { 6631fd032eeSChristoph Hellwig { .page = 0x00, .emulate = spc_emulate_evpd_00 }, 6641fd032eeSChristoph Hellwig { .page = 0x80, .emulate = spc_emulate_evpd_80 }, 6651fd032eeSChristoph Hellwig { .page = 0x83, .emulate = spc_emulate_evpd_83 }, 6661fd032eeSChristoph Hellwig { .page = 0x86, .emulate = spc_emulate_evpd_86 }, 6671fd032eeSChristoph Hellwig { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, 6681fd032eeSChristoph Hellwig { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, 6691fd032eeSChristoph Hellwig { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, 670c66094bfSHannes Reinecke { .page = 0xb3, .emulate = spc_emulate_evpd_b3 }, 6711fd032eeSChristoph Hellwig }; 6721fd032eeSChristoph Hellwig 6731fd032eeSChristoph Hellwig /* supported vital product data pages */ 674de103c93SChristoph Hellwig static sense_reason_t 675de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 6761fd032eeSChristoph Hellwig { 6771fd032eeSChristoph Hellwig int p; 6781fd032eeSChristoph Hellwig 6791fd032eeSChristoph Hellwig /* 6801fd032eeSChristoph Hellwig * Only report the INQUIRY EVPD=1 pages after a valid NAA 6811fd032eeSChristoph Hellwig * Registered Extended LUN WWN has been set via ConfigFS 6821fd032eeSChristoph Hellwig * during device creation/restart. 6831fd032eeSChristoph Hellwig */ 6840fd97ccfSChristoph Hellwig if (cmd->se_dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 6851fd032eeSChristoph Hellwig buf[3] = ARRAY_SIZE(evpd_handlers); 6861fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) 6871fd032eeSChristoph Hellwig buf[p + 4] = evpd_handlers[p].page; 6881fd032eeSChristoph Hellwig } 6891fd032eeSChristoph Hellwig 6901fd032eeSChristoph Hellwig return 0; 6911fd032eeSChristoph Hellwig } 6921fd032eeSChristoph Hellwig 693de103c93SChristoph Hellwig static sense_reason_t 694de103c93SChristoph Hellwig spc_emulate_inquiry(struct se_cmd *cmd) 6951fd032eeSChristoph Hellwig { 6961fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 6971fd032eeSChristoph Hellwig struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg; 698ffe7b0e9SPaolo Bonzini unsigned char *rbuf; 6991fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 700f82f320eSNicholas Bellinger unsigned char *buf; 701de103c93SChristoph Hellwig sense_reason_t ret; 702de103c93SChristoph Hellwig int p; 7032426bd45SRoland Dreier int len = 0; 7041fd032eeSChristoph Hellwig 705f82f320eSNicholas Bellinger buf = kzalloc(SE_INQUIRY_BUF, GFP_KERNEL); 706f82f320eSNicholas Bellinger if (!buf) { 707f82f320eSNicholas Bellinger pr_err("Unable to allocate response buffer for INQUIRY\n"); 708f82f320eSNicholas Bellinger return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 709f82f320eSNicholas Bellinger } 710dea5f099SNicholas Bellinger 7111fd032eeSChristoph Hellwig if (dev == tpg->tpg_virt_lun0.lun_se_dev) 7121fd032eeSChristoph Hellwig buf[0] = 0x3f; /* Not connected */ 7131fd032eeSChristoph Hellwig else 7141fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 7151fd032eeSChristoph Hellwig 7161fd032eeSChristoph Hellwig if (!(cdb[1] & 0x1)) { 7171fd032eeSChristoph Hellwig if (cdb[2]) { 7181fd032eeSChristoph Hellwig pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", 7191fd032eeSChristoph Hellwig cdb[2]); 720de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7211fd032eeSChristoph Hellwig goto out; 7221fd032eeSChristoph Hellwig } 7231fd032eeSChristoph Hellwig 7241fd032eeSChristoph Hellwig ret = spc_emulate_inquiry_std(cmd, buf); 7252426bd45SRoland Dreier len = buf[4] + 5; 7261fd032eeSChristoph Hellwig goto out; 7271fd032eeSChristoph Hellwig } 7281fd032eeSChristoph Hellwig 7291fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 7301fd032eeSChristoph Hellwig if (cdb[2] == evpd_handlers[p].page) { 7311fd032eeSChristoph Hellwig buf[1] = cdb[2]; 7321fd032eeSChristoph Hellwig ret = evpd_handlers[p].emulate(cmd, buf); 7332426bd45SRoland Dreier len = get_unaligned_be16(&buf[2]) + 4; 7341fd032eeSChristoph Hellwig goto out; 7351fd032eeSChristoph Hellwig } 7361fd032eeSChristoph Hellwig } 7371fd032eeSChristoph Hellwig 7381fd032eeSChristoph Hellwig pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 739de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7401fd032eeSChristoph Hellwig 7411fd032eeSChristoph Hellwig out: 742ffe7b0e9SPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 74349df9fc9SNicholas Bellinger if (rbuf) { 744f82f320eSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_INQUIRY_BUF, cmd->data_length)); 7451fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 74649df9fc9SNicholas Bellinger } 747f82f320eSNicholas Bellinger kfree(buf); 7481fd032eeSChristoph Hellwig 7491fd032eeSChristoph Hellwig if (!ret) 7502426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, len); 7511fd032eeSChristoph Hellwig return ret; 7521fd032eeSChristoph Hellwig } 7531fd032eeSChristoph Hellwig 754d45aca42SNicholas Bellinger static int spc_modesense_rwrecovery(struct se_cmd *cmd, u8 pc, u8 *p) 7551fd032eeSChristoph Hellwig { 7561fd032eeSChristoph Hellwig p[0] = 0x01; 7571fd032eeSChristoph Hellwig p[1] = 0x0a; 7581fd032eeSChristoph Hellwig 759d4b2b867SRoland Dreier /* No changeable values for now */ 760d4b2b867SRoland Dreier if (pc == 1) 761d4b2b867SRoland Dreier goto out; 762d4b2b867SRoland Dreier 763d4b2b867SRoland Dreier out: 7641fd032eeSChristoph Hellwig return 12; 7651fd032eeSChristoph Hellwig } 7661fd032eeSChristoph Hellwig 767d45aca42SNicholas Bellinger static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p) 7681fd032eeSChristoph Hellwig { 769d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 770d45aca42SNicholas Bellinger struct se_session *sess = cmd->se_sess; 771d45aca42SNicholas Bellinger 7721fd032eeSChristoph Hellwig p[0] = 0x0a; 7731fd032eeSChristoph Hellwig p[1] = 0x0a; 774d4b2b867SRoland Dreier 775d4b2b867SRoland Dreier /* No changeable values for now */ 776d4b2b867SRoland Dreier if (pc == 1) 777d4b2b867SRoland Dreier goto out; 778d4b2b867SRoland Dreier 7791fd032eeSChristoph Hellwig p[2] = 2; 7801fd032eeSChristoph Hellwig /* 7811fd032eeSChristoph Hellwig * From spc4r23, 7.4.7 Control mode page 7821fd032eeSChristoph Hellwig * 7831fd032eeSChristoph Hellwig * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 7841fd032eeSChristoph Hellwig * restrictions on the algorithm used for reordering commands 7851fd032eeSChristoph Hellwig * having the SIMPLE task attribute (see SAM-4). 7861fd032eeSChristoph Hellwig * 7871fd032eeSChristoph Hellwig * Table 368 -- QUEUE ALGORITHM MODIFIER field 7881fd032eeSChristoph Hellwig * Code Description 7891fd032eeSChristoph Hellwig * 0h Restricted reordering 7901fd032eeSChristoph Hellwig * 1h Unrestricted reordering allowed 7911fd032eeSChristoph Hellwig * 2h to 7h Reserved 7921fd032eeSChristoph Hellwig * 8h to Fh Vendor specific 7931fd032eeSChristoph Hellwig * 7941fd032eeSChristoph Hellwig * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 7951fd032eeSChristoph Hellwig * the device server shall order the processing sequence of commands 7961fd032eeSChristoph Hellwig * having the SIMPLE task attribute such that data integrity is maintained 7971fd032eeSChristoph Hellwig * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 7981fd032eeSChristoph Hellwig * requests is halted at any time, the final value of all data observable 7991fd032eeSChristoph Hellwig * on the medium shall be the same as if all the commands had been processed 8001fd032eeSChristoph Hellwig * with the ORDERED task attribute). 8011fd032eeSChristoph Hellwig * 8021fd032eeSChristoph Hellwig * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 8031fd032eeSChristoph Hellwig * device server may reorder the processing sequence of commands having the 8041fd032eeSChristoph Hellwig * SIMPLE task attribute in any manner. Any data integrity exposures related to 8051fd032eeSChristoph Hellwig * command sequence order shall be explicitly handled by the application client 8061fd032eeSChristoph Hellwig * through the selection of appropriate ommands and task attributes. 8071fd032eeSChristoph Hellwig */ 8080fd97ccfSChristoph Hellwig p[3] = (dev->dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 8091fd032eeSChristoph Hellwig /* 8101fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8111fd032eeSChristoph Hellwig * 8121fd032eeSChristoph Hellwig * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 8131fd032eeSChristoph Hellwig * 8141fd032eeSChristoph Hellwig * 00b: The logical unit shall clear any unit attention condition 8151fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8161fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when a com- 8171fd032eeSChristoph Hellwig * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 8181fd032eeSChristoph Hellwig * status. 8191fd032eeSChristoph Hellwig * 8201fd032eeSChristoph Hellwig * 10b: The logical unit shall not clear any unit attention condition 8211fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8221fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when 8231fd032eeSChristoph Hellwig * a command is completed with BUSY, TASK SET FULL, or RESERVATION 8241fd032eeSChristoph Hellwig * CONFLICT status. 8251fd032eeSChristoph Hellwig * 8261fd032eeSChristoph Hellwig * 11b a The logical unit shall not clear any unit attention condition 8271fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8281fd032eeSChristoph Hellwig * status and shall establish a unit attention condition for the 8291fd032eeSChristoph Hellwig * initiator port associated with the I_T nexus on which the BUSY, 8301fd032eeSChristoph Hellwig * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 8311fd032eeSChristoph Hellwig * Depending on the status, the additional sense code shall be set to 8321fd032eeSChristoph Hellwig * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 8331fd032eeSChristoph Hellwig * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 8341fd032eeSChristoph Hellwig * command, a unit attention condition shall be established only once 8351fd032eeSChristoph Hellwig * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 8361fd032eeSChristoph Hellwig * to the number of commands completed with one of those status codes. 8371fd032eeSChristoph Hellwig */ 8380fd97ccfSChristoph Hellwig p[4] = (dev->dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : 8390fd97ccfSChristoph Hellwig (dev->dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; 8401fd032eeSChristoph Hellwig /* 8411fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8421fd032eeSChristoph Hellwig * 8431fd032eeSChristoph Hellwig * Task Aborted Status (TAS) bit set to zero. 8441fd032eeSChristoph Hellwig * 8451fd032eeSChristoph Hellwig * A task aborted status (TAS) bit set to zero specifies that aborted 8461fd032eeSChristoph Hellwig * tasks shall be terminated by the device server without any response 8471fd032eeSChristoph Hellwig * to the application client. A TAS bit set to one specifies that tasks 8481fd032eeSChristoph Hellwig * aborted by the actions of an I_T nexus other than the I_T nexus on 8491fd032eeSChristoph Hellwig * which the command was received shall be completed with TASK ABORTED 8501fd032eeSChristoph Hellwig * status (see SAM-4). 8511fd032eeSChristoph Hellwig */ 8520fd97ccfSChristoph Hellwig p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00; 8530c30f421SNicholas Bellinger /* 8540c30f421SNicholas Bellinger * From spc4r30, section 7.5.7 Control mode page 8550c30f421SNicholas Bellinger * 8560c30f421SNicholas Bellinger * Application Tag Owner (ATO) bit set to one. 8570c30f421SNicholas Bellinger * 8580c30f421SNicholas Bellinger * If the ATO bit is set to one the device server shall not modify the 8590c30f421SNicholas Bellinger * LOGICAL BLOCK APPLICATION TAG field and, depending on the protection 8600c30f421SNicholas Bellinger * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE 8610c30f421SNicholas Bellinger * TAG field. 8620c30f421SNicholas Bellinger */ 863d45aca42SNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 8649ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || sess->sess_prot_type) 8650c30f421SNicholas Bellinger p[5] |= 0x80; 866d45aca42SNicholas Bellinger } 8670c30f421SNicholas Bellinger 8681fd032eeSChristoph Hellwig p[8] = 0xff; 8691fd032eeSChristoph Hellwig p[9] = 0xff; 8701fd032eeSChristoph Hellwig p[11] = 30; 8711fd032eeSChristoph Hellwig 872d4b2b867SRoland Dreier out: 8731fd032eeSChristoph Hellwig return 12; 8741fd032eeSChristoph Hellwig } 8751fd032eeSChristoph Hellwig 876d45aca42SNicholas Bellinger static int spc_modesense_caching(struct se_cmd *cmd, u8 pc, u8 *p) 8771fd032eeSChristoph Hellwig { 878d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 879d45aca42SNicholas Bellinger 8801fd032eeSChristoph Hellwig p[0] = 0x08; 8811fd032eeSChristoph Hellwig p[1] = 0x12; 882d4b2b867SRoland Dreier 883d4b2b867SRoland Dreier /* No changeable values for now */ 884d4b2b867SRoland Dreier if (pc == 1) 885d4b2b867SRoland Dreier goto out; 886d4b2b867SRoland Dreier 887814e5b45SChristoph Hellwig if (target_check_wce(dev)) 8881fd032eeSChristoph Hellwig p[2] = 0x04; /* Write Cache Enable */ 8891fd032eeSChristoph Hellwig p[12] = 0x20; /* Disabled Read Ahead */ 8901fd032eeSChristoph Hellwig 891d4b2b867SRoland Dreier out: 8921fd032eeSChristoph Hellwig return 20; 8931fd032eeSChristoph Hellwig } 8941fd032eeSChristoph Hellwig 895d45aca42SNicholas Bellinger static int spc_modesense_informational_exceptions(struct se_cmd *cmd, u8 pc, unsigned char *p) 8960f6d64ceSRoland Dreier { 8970f6d64ceSRoland Dreier p[0] = 0x1c; 8980f6d64ceSRoland Dreier p[1] = 0x0a; 8990f6d64ceSRoland Dreier 9000f6d64ceSRoland Dreier /* No changeable values for now */ 9010f6d64ceSRoland Dreier if (pc == 1) 9020f6d64ceSRoland Dreier goto out; 9030f6d64ceSRoland Dreier 9040f6d64ceSRoland Dreier out: 9050f6d64ceSRoland Dreier return 12; 9060f6d64ceSRoland Dreier } 9070f6d64ceSRoland Dreier 908d4b2b867SRoland Dreier static struct { 909d4b2b867SRoland Dreier uint8_t page; 910d4b2b867SRoland Dreier uint8_t subpage; 911d45aca42SNicholas Bellinger int (*emulate)(struct se_cmd *, u8, unsigned char *); 912d4b2b867SRoland Dreier } modesense_handlers[] = { 913d4b2b867SRoland Dreier { .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery }, 914d4b2b867SRoland Dreier { .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching }, 915d4b2b867SRoland Dreier { .page = 0x0a, .subpage = 0x00, .emulate = spc_modesense_control }, 9160f6d64ceSRoland Dreier { .page = 0x1c, .subpage = 0x00, .emulate = spc_modesense_informational_exceptions }, 917d4b2b867SRoland Dreier }; 918d4b2b867SRoland Dreier 9191fd032eeSChristoph Hellwig static void spc_modesense_write_protect(unsigned char *buf, int type) 9201fd032eeSChristoph Hellwig { 9211fd032eeSChristoph Hellwig /* 9221fd032eeSChristoph Hellwig * I believe that the WP bit (bit 7) in the mode header is the same for 9231fd032eeSChristoph Hellwig * all device types.. 9241fd032eeSChristoph Hellwig */ 9251fd032eeSChristoph Hellwig switch (type) { 9261fd032eeSChristoph Hellwig case TYPE_DISK: 9271fd032eeSChristoph Hellwig case TYPE_TAPE: 9281fd032eeSChristoph Hellwig default: 9291fd032eeSChristoph Hellwig buf[0] |= 0x80; /* WP bit */ 9301fd032eeSChristoph Hellwig break; 9311fd032eeSChristoph Hellwig } 9321fd032eeSChristoph Hellwig } 9331fd032eeSChristoph Hellwig 9341fd032eeSChristoph Hellwig static void spc_modesense_dpofua(unsigned char *buf, int type) 9351fd032eeSChristoph Hellwig { 9361fd032eeSChristoph Hellwig switch (type) { 9371fd032eeSChristoph Hellwig case TYPE_DISK: 9381fd032eeSChristoph Hellwig buf[0] |= 0x10; /* DPOFUA bit */ 9391fd032eeSChristoph Hellwig break; 9401fd032eeSChristoph Hellwig default: 9411fd032eeSChristoph Hellwig break; 9421fd032eeSChristoph Hellwig } 9431fd032eeSChristoph Hellwig } 9441fd032eeSChristoph Hellwig 945d4b2b867SRoland Dreier static int spc_modesense_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 946d4b2b867SRoland Dreier { 947d4b2b867SRoland Dreier *buf++ = 8; 948d4b2b867SRoland Dreier put_unaligned_be32(min(blocks, 0xffffffffull), buf); 949d4b2b867SRoland Dreier buf += 4; 950d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 951d4b2b867SRoland Dreier return 9; 952d4b2b867SRoland Dreier } 953d4b2b867SRoland Dreier 954d4b2b867SRoland Dreier static int spc_modesense_long_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 955d4b2b867SRoland Dreier { 956d4b2b867SRoland Dreier if (blocks <= 0xffffffff) 957d4b2b867SRoland Dreier return spc_modesense_blockdesc(buf + 3, blocks, block_size) + 3; 958d4b2b867SRoland Dreier 959d4b2b867SRoland Dreier *buf++ = 1; /* LONGLBA */ 960d4b2b867SRoland Dreier buf += 2; 961d4b2b867SRoland Dreier *buf++ = 16; 962d4b2b867SRoland Dreier put_unaligned_be64(blocks, buf); 963d4b2b867SRoland Dreier buf += 12; 964d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 965d4b2b867SRoland Dreier 966d4b2b867SRoland Dreier return 17; 967d4b2b867SRoland Dreier } 968d4b2b867SRoland Dreier 969de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) 9701fd032eeSChristoph Hellwig { 9711fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 9721fd032eeSChristoph Hellwig char *cdb = cmd->t_task_cdb; 973cab9609bSNicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF], *rbuf; 9741fd032eeSChristoph Hellwig int type = dev->transport->get_device_type(dev); 9751fd032eeSChristoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 976d4b2b867SRoland Dreier bool dbd = !!(cdb[1] & 0x08); 977d4b2b867SRoland Dreier bool llba = ten ? !!(cdb[1] & 0x10) : false; 978d4b2b867SRoland Dreier u8 pc = cdb[2] >> 6; 979d4b2b867SRoland Dreier u8 page = cdb[2] & 0x3f; 980d4b2b867SRoland Dreier u8 subpage = cdb[3]; 9811fd032eeSChristoph Hellwig int length = 0; 982d4b2b867SRoland Dreier int ret; 983d4b2b867SRoland Dreier int i; 9841fd032eeSChristoph Hellwig 985cab9609bSNicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 986cab9609bSNicholas Bellinger 987fecae40aSNicholas Bellinger /* 988fecae40aSNicholas Bellinger * Skip over MODE DATA LENGTH + MEDIUM TYPE fields to byte 3 for 989fecae40aSNicholas Bellinger * MODE_SENSE_10 and byte 2 for MODE_SENSE (6). 990fecae40aSNicholas Bellinger */ 991fecae40aSNicholas Bellinger length = ten ? 3 : 2; 992d4b2b867SRoland Dreier 993d4b2b867SRoland Dreier /* DEVICE-SPECIFIC PARAMETER */ 994d4b2b867SRoland Dreier if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 995d4b2b867SRoland Dreier (cmd->se_deve && 996d4b2b867SRoland Dreier (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 997d4b2b867SRoland Dreier spc_modesense_write_protect(&buf[length], type); 998d4b2b867SRoland Dreier 999814e5b45SChristoph Hellwig /* 1000814e5b45SChristoph Hellwig * SBC only allows us to enable FUA and DPO together. Fortunately 1001814e5b45SChristoph Hellwig * DPO is explicitly specified as a hint, so a noop is a perfectly 1002814e5b45SChristoph Hellwig * valid implementation. 1003814e5b45SChristoph Hellwig */ 1004814e5b45SChristoph Hellwig if (target_check_fua(dev)) 1005d4b2b867SRoland Dreier spc_modesense_dpofua(&buf[length], type); 1006d4b2b867SRoland Dreier 1007d4b2b867SRoland Dreier ++length; 1008d4b2b867SRoland Dreier 1009d4b2b867SRoland Dreier /* BLOCK DESCRIPTOR */ 1010d4b2b867SRoland Dreier 1011d4b2b867SRoland Dreier /* 1012d4b2b867SRoland Dreier * For now we only include a block descriptor for disk (SBC) 1013d4b2b867SRoland Dreier * devices; other command sets use a slightly different format. 1014d4b2b867SRoland Dreier */ 1015d4b2b867SRoland Dreier if (!dbd && type == TYPE_DISK) { 1016d4b2b867SRoland Dreier u64 blocks = dev->transport->get_blocks(dev); 1017d4b2b867SRoland Dreier u32 block_size = dev->dev_attrib.block_size; 10181fd032eeSChristoph Hellwig 10191fd032eeSChristoph Hellwig if (ten) { 1020d4b2b867SRoland Dreier if (llba) { 1021d4b2b867SRoland Dreier length += spc_modesense_long_blockdesc(&buf[length], 1022d4b2b867SRoland Dreier blocks, block_size); 10231fd032eeSChristoph Hellwig } else { 1024d4b2b867SRoland Dreier length += 3; 1025d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], 1026d4b2b867SRoland Dreier blocks, block_size); 1027d4b2b867SRoland Dreier } 1028d4b2b867SRoland Dreier } else { 1029d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], blocks, 1030d4b2b867SRoland Dreier block_size); 1031d4b2b867SRoland Dreier } 1032d4b2b867SRoland Dreier } else { 1033d4b2b867SRoland Dreier if (ten) 1034d4b2b867SRoland Dreier length += 4; 1035d4b2b867SRoland Dreier else 1036d4b2b867SRoland Dreier length += 1; 10371fd032eeSChristoph Hellwig } 10381fd032eeSChristoph Hellwig 1039d4b2b867SRoland Dreier if (page == 0x3f) { 1040d4b2b867SRoland Dreier if (subpage != 0x00 && subpage != 0xff) { 1041de103c93SChristoph Hellwig pr_warn("MODE_SENSE: Invalid subpage code: 0x%02x\n", subpage); 1042de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 1043d4b2b867SRoland Dreier } 1044d4b2b867SRoland Dreier 1045d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) { 1046d4b2b867SRoland Dreier /* 1047d4b2b867SRoland Dreier * Tricky way to say all subpage 00h for 1048d4b2b867SRoland Dreier * subpage==0, all subpages for subpage==0xff 1049d4b2b867SRoland Dreier * (and we just checked above that those are 1050d4b2b867SRoland Dreier * the only two possibilities). 1051d4b2b867SRoland Dreier */ 1052d4b2b867SRoland Dreier if ((modesense_handlers[i].subpage & ~subpage) == 0) { 1053d45aca42SNicholas Bellinger ret = modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1054d4b2b867SRoland Dreier if (!ten && length + ret >= 255) 1055d4b2b867SRoland Dreier break; 1056d4b2b867SRoland Dreier length += ret; 1057d4b2b867SRoland Dreier } 1058d4b2b867SRoland Dreier } 1059d4b2b867SRoland Dreier 1060d4b2b867SRoland Dreier goto set_length; 1061d4b2b867SRoland Dreier } 1062d4b2b867SRoland Dreier 1063d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 1064d4b2b867SRoland Dreier if (modesense_handlers[i].page == page && 1065d4b2b867SRoland Dreier modesense_handlers[i].subpage == subpage) { 1066d45aca42SNicholas Bellinger length += modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1067d4b2b867SRoland Dreier goto set_length; 1068d4b2b867SRoland Dreier } 1069d4b2b867SRoland Dreier 1070d4b2b867SRoland Dreier /* 1071d4b2b867SRoland Dreier * We don't intend to implement: 1072d4b2b867SRoland Dreier * - obsolete page 03h "format parameters" (checked by Solaris) 1073d4b2b867SRoland Dreier */ 1074d4b2b867SRoland Dreier if (page != 0x03) 1075d4b2b867SRoland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 1076d4b2b867SRoland Dreier page, subpage); 1077d4b2b867SRoland Dreier 1078de103c93SChristoph Hellwig return TCM_UNKNOWN_MODE_PAGE; 1079d4b2b867SRoland Dreier 1080d4b2b867SRoland Dreier set_length: 1081d4b2b867SRoland Dreier if (ten) 1082d4b2b867SRoland Dreier put_unaligned_be16(length - 2, buf); 1083d4b2b867SRoland Dreier else 1084d4b2b867SRoland Dreier buf[0] = length - 1; 1085d4b2b867SRoland Dreier 1086cab9609bSNicholas Bellinger rbuf = transport_kmap_data_sg(cmd); 1087cab9609bSNicholas Bellinger if (rbuf) { 1088cab9609bSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_MODE_PAGE_BUF, cmd->data_length)); 1089cab9609bSNicholas Bellinger transport_kunmap_data_sg(cmd); 1090d4b2b867SRoland Dreier } 1091d4b2b867SRoland Dreier 10922426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, length); 10931fd032eeSChristoph Hellwig return 0; 10941fd032eeSChristoph Hellwig } 10951fd032eeSChristoph Hellwig 1096de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) 10973a3c5e4aSRoland Dreier { 10983a3c5e4aSRoland Dreier char *cdb = cmd->t_task_cdb; 10993a3c5e4aSRoland Dreier bool ten = cdb[0] == MODE_SELECT_10; 11003a3c5e4aSRoland Dreier int off = ten ? 8 : 4; 11013a3c5e4aSRoland Dreier bool pf = !!(cdb[1] & 0x10); 11023a3c5e4aSRoland Dreier u8 page, subpage; 11033a3c5e4aSRoland Dreier unsigned char *buf; 11043a3c5e4aSRoland Dreier unsigned char tbuf[SE_MODE_PAGE_BUF]; 11053a3c5e4aSRoland Dreier int length; 11063abff1e5SChristoph Hellwig sense_reason_t ret = 0; 11073a3c5e4aSRoland Dreier int i; 11083a3c5e4aSRoland Dreier 110971f41fe1SRoland Dreier if (!cmd->data_length) { 111071f41fe1SRoland Dreier target_complete_cmd(cmd, GOOD); 111171f41fe1SRoland Dreier return 0; 111271f41fe1SRoland Dreier } 111371f41fe1SRoland Dreier 111471f41fe1SRoland Dreier if (cmd->data_length < off + 2) 111571f41fe1SRoland Dreier return TCM_PARAMETER_LIST_LENGTH_ERROR; 111671f41fe1SRoland Dreier 11173a3c5e4aSRoland Dreier buf = transport_kmap_data_sg(cmd); 1118de103c93SChristoph Hellwig if (!buf) 1119de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 11203a3c5e4aSRoland Dreier 11213a3c5e4aSRoland Dreier if (!pf) { 1122de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 11233a3c5e4aSRoland Dreier goto out; 11243a3c5e4aSRoland Dreier } 11253a3c5e4aSRoland Dreier 11263a3c5e4aSRoland Dreier page = buf[off] & 0x3f; 11273a3c5e4aSRoland Dreier subpage = buf[off] & 0x40 ? buf[off + 1] : 0; 11283a3c5e4aSRoland Dreier 11293a3c5e4aSRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 11303a3c5e4aSRoland Dreier if (modesense_handlers[i].page == page && 11313a3c5e4aSRoland Dreier modesense_handlers[i].subpage == subpage) { 11323a3c5e4aSRoland Dreier memset(tbuf, 0, SE_MODE_PAGE_BUF); 1133d45aca42SNicholas Bellinger length = modesense_handlers[i].emulate(cmd, 0, tbuf); 11343a3c5e4aSRoland Dreier goto check_contents; 11353a3c5e4aSRoland Dreier } 11363a3c5e4aSRoland Dreier 1137de103c93SChristoph Hellwig ret = TCM_UNKNOWN_MODE_PAGE; 11383a3c5e4aSRoland Dreier goto out; 11393a3c5e4aSRoland Dreier 11403a3c5e4aSRoland Dreier check_contents: 114171f41fe1SRoland Dreier if (cmd->data_length < off + length) { 114271f41fe1SRoland Dreier ret = TCM_PARAMETER_LIST_LENGTH_ERROR; 114371f41fe1SRoland Dreier goto out; 114471f41fe1SRoland Dreier } 114571f41fe1SRoland Dreier 1146de103c93SChristoph Hellwig if (memcmp(buf + off, tbuf, length)) 1147de103c93SChristoph Hellwig ret = TCM_INVALID_PARAMETER_LIST; 11483a3c5e4aSRoland Dreier 11493a3c5e4aSRoland Dreier out: 11503a3c5e4aSRoland Dreier transport_kunmap_data_sg(cmd); 11513a3c5e4aSRoland Dreier 11523a3c5e4aSRoland Dreier if (!ret) 11533a3c5e4aSRoland Dreier target_complete_cmd(cmd, GOOD); 11543a3c5e4aSRoland Dreier return ret; 11553a3c5e4aSRoland Dreier } 11563a3c5e4aSRoland Dreier 1157de103c93SChristoph Hellwig static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd) 11581fd032eeSChristoph Hellwig { 11591fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 116032a8811fSPaolo Bonzini unsigned char *rbuf; 11611fd032eeSChristoph Hellwig u8 ua_asc = 0, ua_ascq = 0; 116232a8811fSPaolo Bonzini unsigned char buf[SE_SENSE_BUF]; 116332a8811fSPaolo Bonzini 116432a8811fSPaolo Bonzini memset(buf, 0, SE_SENSE_BUF); 11651fd032eeSChristoph Hellwig 11661fd032eeSChristoph Hellwig if (cdb[1] & 0x01) { 11671fd032eeSChristoph Hellwig pr_err("REQUEST_SENSE description emulation not" 11681fd032eeSChristoph Hellwig " supported\n"); 1169de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 11701fd032eeSChristoph Hellwig } 11711fd032eeSChristoph Hellwig 117232a8811fSPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 1173de103c93SChristoph Hellwig if (!rbuf) 1174de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1175de103c93SChristoph Hellwig 1176de103c93SChristoph Hellwig if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { 11771fd032eeSChristoph Hellwig /* 11781fd032eeSChristoph Hellwig * CURRENT ERROR, UNIT ATTENTION 11791fd032eeSChristoph Hellwig */ 11801fd032eeSChristoph Hellwig buf[0] = 0x70; 11811fd032eeSChristoph Hellwig buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; 11821fd032eeSChristoph Hellwig 11831fd032eeSChristoph Hellwig /* 11841fd032eeSChristoph Hellwig * The Additional Sense Code (ASC) from the UNIT ATTENTION 11851fd032eeSChristoph Hellwig */ 11861fd032eeSChristoph Hellwig buf[SPC_ASC_KEY_OFFSET] = ua_asc; 11871fd032eeSChristoph Hellwig buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq; 11881fd032eeSChristoph Hellwig buf[7] = 0x0A; 11891fd032eeSChristoph Hellwig } else { 11901fd032eeSChristoph Hellwig /* 11911fd032eeSChristoph Hellwig * CURRENT ERROR, NO SENSE 11921fd032eeSChristoph Hellwig */ 11931fd032eeSChristoph Hellwig buf[0] = 0x70; 11941fd032eeSChristoph Hellwig buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; 11951fd032eeSChristoph Hellwig 11961fd032eeSChristoph Hellwig /* 11971fd032eeSChristoph Hellwig * NO ADDITIONAL SENSE INFORMATION 11981fd032eeSChristoph Hellwig */ 11991fd032eeSChristoph Hellwig buf[SPC_ASC_KEY_OFFSET] = 0x00; 12001fd032eeSChristoph Hellwig buf[7] = 0x0A; 12011fd032eeSChristoph Hellwig } 12021fd032eeSChristoph Hellwig 120332a8811fSPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 12041fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 120532a8811fSPaolo Bonzini 12061fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 12071fd032eeSChristoph Hellwig return 0; 12081fd032eeSChristoph Hellwig } 12091fd032eeSChristoph Hellwig 1210de103c93SChristoph Hellwig sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd) 1211d1b1f805SChristoph Hellwig { 1212d1b1f805SChristoph Hellwig struct se_dev_entry *deve; 1213d1b1f805SChristoph Hellwig struct se_session *sess = cmd->se_sess; 1214d1b1f805SChristoph Hellwig unsigned char *buf; 1215d1b1f805SChristoph Hellwig u32 lun_count = 0, offset = 8, i; 1216d1b1f805SChristoph Hellwig 1217d1b1f805SChristoph Hellwig if (cmd->data_length < 16) { 1218d1b1f805SChristoph Hellwig pr_warn("REPORT LUNS allocation length %u too small\n", 1219d1b1f805SChristoph Hellwig cmd->data_length); 1220de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 1221d1b1f805SChristoph Hellwig } 1222d1b1f805SChristoph Hellwig 1223d1b1f805SChristoph Hellwig buf = transport_kmap_data_sg(cmd); 1224d1b1f805SChristoph Hellwig if (!buf) 1225de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1226d1b1f805SChristoph Hellwig 1227d1b1f805SChristoph Hellwig /* 1228d1b1f805SChristoph Hellwig * If no struct se_session pointer is present, this struct se_cmd is 1229d1b1f805SChristoph Hellwig * coming via a target_core_mod PASSTHROUGH op, and not through 1230d1b1f805SChristoph Hellwig * a $FABRIC_MOD. In that case, report LUN=0 only. 1231d1b1f805SChristoph Hellwig */ 1232d1b1f805SChristoph Hellwig if (!sess) { 1233d1b1f805SChristoph Hellwig int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); 1234d1b1f805SChristoph Hellwig lun_count = 1; 1235d1b1f805SChristoph Hellwig goto done; 1236d1b1f805SChristoph Hellwig } 1237d1b1f805SChristoph Hellwig 1238d1b1f805SChristoph Hellwig spin_lock_irq(&sess->se_node_acl->device_list_lock); 1239d1b1f805SChristoph Hellwig for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 1240d1b1f805SChristoph Hellwig deve = sess->se_node_acl->device_list[i]; 1241d1b1f805SChristoph Hellwig if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 1242d1b1f805SChristoph Hellwig continue; 1243d1b1f805SChristoph Hellwig /* 1244d1b1f805SChristoph Hellwig * We determine the correct LUN LIST LENGTH even once we 1245d1b1f805SChristoph Hellwig * have reached the initial allocation length. 1246d1b1f805SChristoph Hellwig * See SPC2-R20 7.19. 1247d1b1f805SChristoph Hellwig */ 1248d1b1f805SChristoph Hellwig lun_count++; 1249d1b1f805SChristoph Hellwig if ((offset + 8) > cmd->data_length) 1250d1b1f805SChristoph Hellwig continue; 1251d1b1f805SChristoph Hellwig 1252d1b1f805SChristoph Hellwig int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); 1253d1b1f805SChristoph Hellwig offset += 8; 1254d1b1f805SChristoph Hellwig } 1255d1b1f805SChristoph Hellwig spin_unlock_irq(&sess->se_node_acl->device_list_lock); 1256d1b1f805SChristoph Hellwig 1257d1b1f805SChristoph Hellwig /* 1258d1b1f805SChristoph Hellwig * See SPC3 r07, page 159. 1259d1b1f805SChristoph Hellwig */ 1260d1b1f805SChristoph Hellwig done: 1261d1b1f805SChristoph Hellwig lun_count *= 8; 1262d1b1f805SChristoph Hellwig buf[0] = ((lun_count >> 24) & 0xff); 1263d1b1f805SChristoph Hellwig buf[1] = ((lun_count >> 16) & 0xff); 1264d1b1f805SChristoph Hellwig buf[2] = ((lun_count >> 8) & 0xff); 1265d1b1f805SChristoph Hellwig buf[3] = (lun_count & 0xff); 1266d1b1f805SChristoph Hellwig transport_kunmap_data_sg(cmd); 1267d1b1f805SChristoph Hellwig 12682426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, 8 + lun_count * 8); 1269d1b1f805SChristoph Hellwig return 0; 1270d1b1f805SChristoph Hellwig } 12718de530a5SChristoph Hellwig EXPORT_SYMBOL(spc_emulate_report_luns); 1272d1b1f805SChristoph Hellwig 1273de103c93SChristoph Hellwig static sense_reason_t 1274de103c93SChristoph Hellwig spc_emulate_testunitready(struct se_cmd *cmd) 12751fd032eeSChristoph Hellwig { 12761fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 12771fd032eeSChristoph Hellwig return 0; 12781fd032eeSChristoph Hellwig } 12791fd032eeSChristoph Hellwig 1280de103c93SChristoph Hellwig sense_reason_t 1281de103c93SChristoph Hellwig spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) 128288455ec4SChristoph Hellwig { 1283eba2ca45SNicholas Bellinger struct se_device *dev = cmd->se_dev; 128488455ec4SChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 128588455ec4SChristoph Hellwig 128688455ec4SChristoph Hellwig switch (cdb[0]) { 128788455ec4SChristoph Hellwig case MODE_SELECT: 128888455ec4SChristoph Hellwig *size = cdb[4]; 12893a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 129088455ec4SChristoph Hellwig break; 129188455ec4SChristoph Hellwig case MODE_SELECT_10: 129288455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 12933a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 129488455ec4SChristoph Hellwig break; 129588455ec4SChristoph Hellwig case MODE_SENSE: 129688455ec4SChristoph Hellwig *size = cdb[4]; 12971fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 129888455ec4SChristoph Hellwig break; 129988455ec4SChristoph Hellwig case MODE_SENSE_10: 130088455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 13011fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 130288455ec4SChristoph Hellwig break; 130388455ec4SChristoph Hellwig case LOG_SELECT: 130488455ec4SChristoph Hellwig case LOG_SENSE: 130588455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 130688455ec4SChristoph Hellwig break; 130788455ec4SChristoph Hellwig case PERSISTENT_RESERVE_IN: 130888455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1309d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_in; 131088455ec4SChristoph Hellwig break; 131188455ec4SChristoph Hellwig case PERSISTENT_RESERVE_OUT: 131288455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1313d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_out; 131488455ec4SChristoph Hellwig break; 131588455ec4SChristoph Hellwig case RELEASE: 131688455ec4SChristoph Hellwig case RELEASE_10: 131788455ec4SChristoph Hellwig if (cdb[0] == RELEASE_10) 131888455ec4SChristoph Hellwig *size = (cdb[7] << 8) | cdb[8]; 131988455ec4SChristoph Hellwig else 132088455ec4SChristoph Hellwig *size = cmd->data_length; 132188455ec4SChristoph Hellwig 132288455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_release; 132388455ec4SChristoph Hellwig break; 132488455ec4SChristoph Hellwig case RESERVE: 132588455ec4SChristoph Hellwig case RESERVE_10: 132688455ec4SChristoph Hellwig /* 132788455ec4SChristoph Hellwig * The SPC-2 RESERVE does not contain a size in the SCSI CDB. 132888455ec4SChristoph Hellwig * Assume the passthrough or $FABRIC_MOD will tell us about it. 132988455ec4SChristoph Hellwig */ 133088455ec4SChristoph Hellwig if (cdb[0] == RESERVE_10) 133188455ec4SChristoph Hellwig *size = (cdb[7] << 8) | cdb[8]; 133288455ec4SChristoph Hellwig else 133388455ec4SChristoph Hellwig *size = cmd->data_length; 133488455ec4SChristoph Hellwig 133588455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_reserve; 133688455ec4SChristoph Hellwig break; 133788455ec4SChristoph Hellwig case REQUEST_SENSE: 133888455ec4SChristoph Hellwig *size = cdb[4]; 13391fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_request_sense; 134088455ec4SChristoph Hellwig break; 134188455ec4SChristoph Hellwig case INQUIRY: 134288455ec4SChristoph Hellwig *size = (cdb[3] << 8) + cdb[4]; 134388455ec4SChristoph Hellwig 134488455ec4SChristoph Hellwig /* 1345125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for INQUIRY. 134688455ec4SChristoph Hellwig * See spc4r17 section 5.3 134788455ec4SChristoph Hellwig */ 134868d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 13491fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_inquiry; 135088455ec4SChristoph Hellwig break; 135188455ec4SChristoph Hellwig case SECURITY_PROTOCOL_IN: 135288455ec4SChristoph Hellwig case SECURITY_PROTOCOL_OUT: 135388455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 135488455ec4SChristoph Hellwig break; 135588455ec4SChristoph Hellwig case EXTENDED_COPY: 135604b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 135704b1b795SNicholas Bellinger cmd->execute_cmd = target_do_xcopy; 135804b1b795SNicholas Bellinger break; 135988455ec4SChristoph Hellwig case RECEIVE_COPY_RESULTS: 136004b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 136104b1b795SNicholas Bellinger cmd->execute_cmd = target_do_receive_copy_results; 136204b1b795SNicholas Bellinger break; 136304b1b795SNicholas Bellinger case READ_ATTRIBUTE: 136488455ec4SChristoph Hellwig case WRITE_ATTRIBUTE: 136588455ec4SChristoph Hellwig *size = (cdb[10] << 24) | (cdb[11] << 16) | 136688455ec4SChristoph Hellwig (cdb[12] << 8) | cdb[13]; 136788455ec4SChristoph Hellwig break; 136888455ec4SChristoph Hellwig case RECEIVE_DIAGNOSTIC: 136988455ec4SChristoph Hellwig case SEND_DIAGNOSTIC: 137088455ec4SChristoph Hellwig *size = (cdb[3] << 8) | cdb[4]; 137188455ec4SChristoph Hellwig break; 137288455ec4SChristoph Hellwig case WRITE_BUFFER: 137388455ec4SChristoph Hellwig *size = (cdb[6] << 16) + (cdb[7] << 8) + cdb[8]; 137488455ec4SChristoph Hellwig break; 137588455ec4SChristoph Hellwig case REPORT_LUNS: 1376d1b1f805SChristoph Hellwig cmd->execute_cmd = spc_emulate_report_luns; 137788455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 137888455ec4SChristoph Hellwig /* 1379125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for REPORT_LUNS 138088455ec4SChristoph Hellwig * See spc4r17 section 5.3 138188455ec4SChristoph Hellwig */ 138268d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 138388455ec4SChristoph Hellwig break; 138488455ec4SChristoph Hellwig case TEST_UNIT_READY: 13851fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_testunitready; 1386d6e0175cSChristoph Hellwig *size = 0; 138788455ec4SChristoph Hellwig break; 1388eba2ca45SNicholas Bellinger case MAINTENANCE_IN: 1389eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1390eba2ca45SNicholas Bellinger /* 1391eba2ca45SNicholas Bellinger * MAINTENANCE_IN from SCC-2 1392eba2ca45SNicholas Bellinger * Check for emulated MI_REPORT_TARGET_PGS 1393eba2ca45SNicholas Bellinger */ 1394c87fbd56SChristoph Hellwig if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS) { 1395eba2ca45SNicholas Bellinger cmd->execute_cmd = 1396eba2ca45SNicholas Bellinger target_emulate_report_target_port_groups; 1397eba2ca45SNicholas Bellinger } 1398eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1399eba2ca45SNicholas Bellinger } else { 1400eba2ca45SNicholas Bellinger /* 1401eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1402eba2ca45SNicholas Bellinger */ 1403eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1404eba2ca45SNicholas Bellinger } 1405eba2ca45SNicholas Bellinger break; 1406eba2ca45SNicholas Bellinger case MAINTENANCE_OUT: 1407eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1408eba2ca45SNicholas Bellinger /* 1409eba2ca45SNicholas Bellinger * MAINTENANCE_OUT from SCC-2 1410eba2ca45SNicholas Bellinger * Check for emulated MO_SET_TARGET_PGS. 1411eba2ca45SNicholas Bellinger */ 1412c87fbd56SChristoph Hellwig if (cdb[1] == MO_SET_TARGET_PGS) { 1413eba2ca45SNicholas Bellinger cmd->execute_cmd = 1414eba2ca45SNicholas Bellinger target_emulate_set_target_port_groups; 1415eba2ca45SNicholas Bellinger } 1416eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1417eba2ca45SNicholas Bellinger } else { 1418eba2ca45SNicholas Bellinger /* 1419eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1420eba2ca45SNicholas Bellinger */ 1421eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1422eba2ca45SNicholas Bellinger } 1423eba2ca45SNicholas Bellinger break; 142488455ec4SChristoph Hellwig default: 142588455ec4SChristoph Hellwig pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode" 142688455ec4SChristoph Hellwig " 0x%02x, sending CHECK_CONDITION.\n", 142788455ec4SChristoph Hellwig cmd->se_tfo->get_fabric_name(), cdb[0]); 1428de103c93SChristoph Hellwig return TCM_UNSUPPORTED_SCSI_OPCODE; 142988455ec4SChristoph Hellwig } 143088455ec4SChristoph Hellwig 143188455ec4SChristoph Hellwig return 0; 143288455ec4SChristoph Hellwig } 143388455ec4SChristoph Hellwig EXPORT_SYMBOL(spc_parse_cdb); 1434