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 27ba929992SBart Van Assche #include <scsi/scsi_proto.h> 28ba929992SBart Van Assche #include <scsi/scsi_common.h> 2988455ec4SChristoph Hellwig #include <scsi/scsi_tcq.h> 3088455ec4SChristoph Hellwig 3188455ec4SChristoph Hellwig #include <target/target_core_base.h> 3288455ec4SChristoph Hellwig #include <target/target_core_backend.h> 3388455ec4SChristoph Hellwig #include <target/target_core_fabric.h> 3488455ec4SChristoph Hellwig 3588455ec4SChristoph Hellwig #include "target_core_internal.h" 36eba2ca45SNicholas Bellinger #include "target_core_alua.h" 3788455ec4SChristoph Hellwig #include "target_core_pr.h" 3888455ec4SChristoph Hellwig #include "target_core_ua.h" 3904b1b795SNicholas Bellinger #include "target_core_xcopy.h" 4088455ec4SChristoph Hellwig 41adf653f9SChristoph Hellwig static void spc_fill_alua_data(struct se_lun *lun, unsigned char *buf) 421fd032eeSChristoph Hellwig { 431fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 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 */ 56adf653f9SChristoph Hellwig spin_lock(&lun->lun_tg_pt_gp_lock); 57adf653f9SChristoph Hellwig tg_pt_gp = lun->lun_tg_pt_gp; 581fd032eeSChristoph Hellwig if (tg_pt_gp) 591fd032eeSChristoph Hellwig buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; 60adf653f9SChristoph Hellwig spin_unlock(&lun->lun_tg_pt_gp_lock); 611fd032eeSChristoph Hellwig } 621fd032eeSChristoph Hellwig 630dfa1c5dSHannes Reinecke sense_reason_t 640dfa1c5dSHannes Reinecke spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) 651fd032eeSChristoph Hellwig { 661fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 671fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 68d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 691fd032eeSChristoph Hellwig 701fd032eeSChristoph Hellwig /* Set RMB (removable media) for tape devices */ 711fd032eeSChristoph Hellwig if (dev->transport->get_device_type(dev) == TYPE_TAPE) 721fd032eeSChristoph Hellwig buf[1] = 0x80; 731fd032eeSChristoph Hellwig 7448c2567dSChristoph Hellwig buf[2] = 0x05; /* SPC-3 */ 751fd032eeSChristoph Hellwig 761fd032eeSChristoph Hellwig /* 771fd032eeSChristoph Hellwig * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 781fd032eeSChristoph Hellwig * 791fd032eeSChristoph Hellwig * SPC4 says: 801fd032eeSChristoph Hellwig * A RESPONSE DATA FORMAT field set to 2h indicates that the 811fd032eeSChristoph Hellwig * standard INQUIRY data is in the format defined in this 821fd032eeSChristoph Hellwig * standard. Response data format values less than 2h are 831fd032eeSChristoph Hellwig * obsolete. Response data format values greater than 2h are 841fd032eeSChristoph Hellwig * reserved. 851fd032eeSChristoph Hellwig */ 861fd032eeSChristoph Hellwig buf[3] = 2; 871fd032eeSChristoph Hellwig 881fd032eeSChristoph Hellwig /* 891fd032eeSChristoph Hellwig * Enable SCCS and TPGS fields for Emulated ALUA 901fd032eeSChristoph Hellwig */ 91adf653f9SChristoph Hellwig spc_fill_alua_data(lun, buf); 921fd032eeSChristoph Hellwig 93d397a445SNicholas Bellinger /* 94d397a445SNicholas Bellinger * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY 95d397a445SNicholas Bellinger */ 96d397a445SNicholas Bellinger if (dev->dev_attrib.emulate_3pc) 97d397a445SNicholas Bellinger buf[5] |= 0x8; 98bdbad2bdSNicholas Bellinger /* 99d2c5304cSNicholas Bellinger * Set Protection (PROTECT) bit when DIF has been enabled on the 1009ef5466eSNicholas Bellinger * device, and the fabric supports VERIFY + PASS. Also report 1019ef5466eSNicholas Bellinger * PROTECT=1 if sess_prot_type has been configured to allow T10-PI 1029ef5466eSNicholas Bellinger * to unprotected devices. 103bdbad2bdSNicholas Bellinger */ 104d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 1059ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || cmd->se_sess->sess_prot_type) 106bdbad2bdSNicholas Bellinger buf[5] |= 0x1; 107d2c5304cSNicholas Bellinger } 108d397a445SNicholas Bellinger 1091fd032eeSChristoph Hellwig buf[7] = 0x2; /* CmdQue=1 */ 1101fd032eeSChristoph Hellwig 111ee60bddbSNicholas Bellinger memcpy(&buf[8], "LIO-ORG ", 8); 112ee60bddbSNicholas Bellinger memset(&buf[16], 0x20, 16); 113ee60bddbSNicholas Bellinger memcpy(&buf[16], dev->t10_wwn.model, 114ee60bddbSNicholas Bellinger min_t(size_t, strlen(dev->t10_wwn.model), 16)); 115ee60bddbSNicholas Bellinger memcpy(&buf[32], dev->t10_wwn.revision, 116ee60bddbSNicholas Bellinger min_t(size_t, strlen(dev->t10_wwn.revision), 4)); 1171fd032eeSChristoph Hellwig buf[4] = 31; /* Set additional length to 31 */ 1181fd032eeSChristoph Hellwig 1191fd032eeSChristoph Hellwig return 0; 1201fd032eeSChristoph Hellwig } 1210dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_inquiry_std); 1221fd032eeSChristoph Hellwig 1231fd032eeSChristoph Hellwig /* unit serial number */ 124de103c93SChristoph Hellwig static sense_reason_t 125de103c93SChristoph Hellwig spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 1261fd032eeSChristoph Hellwig { 1271fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1289aff64e1SChristophe Vu-Brugier u16 len; 1291fd032eeSChristoph Hellwig 1300fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 1319aff64e1SChristophe Vu-Brugier len = sprintf(&buf[4], "%s", dev->t10_wwn.unit_serial); 1321fd032eeSChristoph Hellwig len++; /* Extra Byte for NULL Terminator */ 1331fd032eeSChristoph Hellwig buf[3] = len; 1341fd032eeSChristoph Hellwig } 1351fd032eeSChristoph Hellwig return 0; 1361fd032eeSChristoph Hellwig } 1371fd032eeSChristoph Hellwig 13868366026SNicholas Bellinger void spc_parse_naa_6h_vendor_specific(struct se_device *dev, 1391fd032eeSChristoph Hellwig unsigned char *buf) 1401fd032eeSChristoph Hellwig { 1410fd97ccfSChristoph Hellwig unsigned char *p = &dev->t10_wwn.unit_serial[0]; 1421fd032eeSChristoph Hellwig int cnt; 1431fd032eeSChristoph Hellwig bool next = true; 1441fd032eeSChristoph Hellwig 1451fd032eeSChristoph Hellwig /* 1461fd032eeSChristoph Hellwig * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 1471fd032eeSChristoph Hellwig * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 1481fd032eeSChristoph Hellwig * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 1491fd032eeSChristoph Hellwig * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 1501fd032eeSChristoph Hellwig * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 1511fd032eeSChristoph Hellwig * per device uniqeness. 1521fd032eeSChristoph Hellwig */ 1531fd032eeSChristoph Hellwig for (cnt = 0; *p && cnt < 13; p++) { 1541fd032eeSChristoph Hellwig int val = hex_to_bin(*p); 1551fd032eeSChristoph Hellwig 1561fd032eeSChristoph Hellwig if (val < 0) 1571fd032eeSChristoph Hellwig continue; 1581fd032eeSChristoph Hellwig 1591fd032eeSChristoph Hellwig if (next) { 1601fd032eeSChristoph Hellwig next = false; 1611fd032eeSChristoph Hellwig buf[cnt++] |= val; 1621fd032eeSChristoph Hellwig } else { 1631fd032eeSChristoph Hellwig next = true; 1641fd032eeSChristoph Hellwig buf[cnt] = val << 4; 1651fd032eeSChristoph Hellwig } 1661fd032eeSChristoph Hellwig } 1671fd032eeSChristoph Hellwig } 1681fd032eeSChristoph Hellwig 1691fd032eeSChristoph Hellwig /* 1701fd032eeSChristoph Hellwig * Device identification VPD, for a complete list of 1711fd032eeSChristoph Hellwig * DESIGNATOR TYPEs see spc4r17 Table 459. 1721fd032eeSChristoph Hellwig */ 1730dfa1c5dSHannes Reinecke sense_reason_t 174de103c93SChristoph Hellwig spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 1751fd032eeSChristoph Hellwig { 1761fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1771fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 1781fd032eeSChristoph Hellwig struct se_portal_group *tpg = NULL; 1791fd032eeSChristoph Hellwig struct t10_alua_lu_gp_member *lu_gp_mem; 1801fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 1810fd97ccfSChristoph Hellwig unsigned char *prod = &dev->t10_wwn.model[0]; 1821fd032eeSChristoph Hellwig u32 prod_len; 1831fd032eeSChristoph Hellwig u32 unit_serial_len, off = 0; 1841fd032eeSChristoph Hellwig u16 len = 0, id_len; 1851fd032eeSChristoph Hellwig 1861fd032eeSChristoph Hellwig off = 4; 1871fd032eeSChristoph Hellwig 1881fd032eeSChristoph Hellwig /* 1891fd032eeSChristoph Hellwig * NAA IEEE Registered Extended Assigned designator format, see 1901fd032eeSChristoph Hellwig * spc4r17 section 7.7.3.6.5 1911fd032eeSChristoph Hellwig * 1921fd032eeSChristoph Hellwig * We depend upon a target_core_mod/ConfigFS provided 1931fd032eeSChristoph Hellwig * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 1941fd032eeSChristoph Hellwig * value in order to return the NAA id. 1951fd032eeSChristoph Hellwig */ 1960fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL)) 1971fd032eeSChristoph Hellwig goto check_t10_vend_desc; 1981fd032eeSChristoph Hellwig 1991fd032eeSChristoph Hellwig /* CODE SET == Binary */ 2001fd032eeSChristoph Hellwig buf[off++] = 0x1; 2011fd032eeSChristoph Hellwig 2021fd032eeSChristoph Hellwig /* Set ASSOCIATION == addressed logical unit: 0)b */ 2031fd032eeSChristoph Hellwig buf[off] = 0x00; 2041fd032eeSChristoph Hellwig 2051fd032eeSChristoph Hellwig /* Identifier/Designator type == NAA identifier */ 2061fd032eeSChristoph Hellwig buf[off++] |= 0x3; 2071fd032eeSChristoph Hellwig off++; 2081fd032eeSChristoph Hellwig 2091fd032eeSChristoph Hellwig /* Identifier/Designator length */ 2101fd032eeSChristoph Hellwig buf[off++] = 0x10; 2111fd032eeSChristoph Hellwig 2121fd032eeSChristoph Hellwig /* 2131fd032eeSChristoph Hellwig * Start NAA IEEE Registered Extended Identifier/Designator 2141fd032eeSChristoph Hellwig */ 2151fd032eeSChristoph Hellwig buf[off++] = (0x6 << 4); 2161fd032eeSChristoph Hellwig 2171fd032eeSChristoph Hellwig /* 2181fd032eeSChristoph Hellwig * Use OpenFabrics IEEE Company ID: 00 14 05 2191fd032eeSChristoph Hellwig */ 2201fd032eeSChristoph Hellwig buf[off++] = 0x01; 2211fd032eeSChristoph Hellwig buf[off++] = 0x40; 2221fd032eeSChristoph Hellwig buf[off] = (0x5 << 4); 2231fd032eeSChristoph Hellwig 2241fd032eeSChristoph Hellwig /* 2251fd032eeSChristoph Hellwig * Return ConfigFS Unit Serial Number information for 2261fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER and 2271fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION 2281fd032eeSChristoph Hellwig */ 2291fd032eeSChristoph Hellwig spc_parse_naa_6h_vendor_specific(dev, &buf[off]); 2301fd032eeSChristoph Hellwig 2311fd032eeSChristoph Hellwig len = 20; 2321fd032eeSChristoph Hellwig off = (len + 4); 2331fd032eeSChristoph Hellwig 2341fd032eeSChristoph Hellwig check_t10_vend_desc: 2351fd032eeSChristoph Hellwig /* 2361fd032eeSChristoph Hellwig * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 2371fd032eeSChristoph Hellwig */ 2381fd032eeSChristoph Hellwig id_len = 8; /* For Vendor field */ 2391fd032eeSChristoph Hellwig prod_len = 4; /* For VPD Header */ 2401fd032eeSChristoph Hellwig prod_len += 8; /* For Vendor field */ 2411fd032eeSChristoph Hellwig prod_len += strlen(prod); 2421fd032eeSChristoph Hellwig prod_len++; /* For : */ 2431fd032eeSChristoph Hellwig 2440fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 2450fd97ccfSChristoph Hellwig unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]); 2461fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 2471fd032eeSChristoph Hellwig 2481fd032eeSChristoph Hellwig id_len += sprintf(&buf[off+12], "%s:%s", prod, 2490fd97ccfSChristoph Hellwig &dev->t10_wwn.unit_serial[0]); 2501fd032eeSChristoph Hellwig } 2511fd032eeSChristoph Hellwig buf[off] = 0x2; /* ASCII */ 2521fd032eeSChristoph Hellwig buf[off+1] = 0x1; /* T10 Vendor ID */ 2531fd032eeSChristoph Hellwig buf[off+2] = 0x0; 2541fd032eeSChristoph Hellwig memcpy(&buf[off+4], "LIO-ORG", 8); 2551fd032eeSChristoph Hellwig /* Extra Byte for NULL Terminator */ 2561fd032eeSChristoph Hellwig id_len++; 2571fd032eeSChristoph Hellwig /* Identifier Length */ 2581fd032eeSChristoph Hellwig buf[off+3] = id_len; 2591fd032eeSChristoph Hellwig /* Header size for Designation descriptor */ 2601fd032eeSChristoph Hellwig len += (id_len + 4); 2611fd032eeSChristoph Hellwig off += (id_len + 4); 262adf653f9SChristoph Hellwig 263adf653f9SChristoph Hellwig if (1) { 2641fd032eeSChristoph Hellwig struct t10_alua_lu_gp *lu_gp; 265fbfe858fSHannes Reinecke u32 padding, scsi_name_len, scsi_target_len; 2661fd032eeSChristoph Hellwig u16 lu_gp_id = 0; 2671fd032eeSChristoph Hellwig u16 tg_pt_gp_id = 0; 2681fd032eeSChristoph Hellwig u16 tpgt; 2691fd032eeSChristoph Hellwig 270adf653f9SChristoph Hellwig tpg = lun->lun_tpg; 2711fd032eeSChristoph Hellwig /* 2721fd032eeSChristoph Hellwig * Relative target port identifer, see spc4r17 2731fd032eeSChristoph Hellwig * section 7.7.3.7 2741fd032eeSChristoph Hellwig * 2751fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2761fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2771fd032eeSChristoph Hellwig */ 2782aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 2791fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 2801fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 2811fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 2821fd032eeSChristoph Hellwig buf[off] |= 0x10; 2831fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Relative target port identifer */ 2841fd032eeSChristoph Hellwig buf[off++] |= 0x4; 2851fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 2861fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 2871fd032eeSChristoph Hellwig /* Skip over Obsolete field in RTPI payload 2881fd032eeSChristoph Hellwig * in Table 472 */ 2891fd032eeSChristoph Hellwig off += 2; 290adf653f9SChristoph Hellwig buf[off++] = ((lun->lun_rtpi >> 8) & 0xff); 291adf653f9SChristoph Hellwig buf[off++] = (lun->lun_rtpi & 0xff); 2921fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 2931fd032eeSChristoph Hellwig /* 2941fd032eeSChristoph Hellwig * Target port group identifier, see spc4r17 2951fd032eeSChristoph Hellwig * section 7.7.3.8 2961fd032eeSChristoph Hellwig * 2971fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2981fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2991fd032eeSChristoph Hellwig */ 300adf653f9SChristoph Hellwig spin_lock(&lun->lun_tg_pt_gp_lock); 301adf653f9SChristoph Hellwig tg_pt_gp = lun->lun_tg_pt_gp; 3021fd032eeSChristoph Hellwig if (!tg_pt_gp) { 303adf653f9SChristoph Hellwig spin_unlock(&lun->lun_tg_pt_gp_lock); 3041fd032eeSChristoph Hellwig goto check_lu_gp; 3051fd032eeSChristoph Hellwig } 3061fd032eeSChristoph Hellwig tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 307adf653f9SChristoph Hellwig spin_unlock(&lun->lun_tg_pt_gp_lock); 3081fd032eeSChristoph Hellwig 3092aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3101fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3111fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3121fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3131fd032eeSChristoph Hellwig buf[off] |= 0x10; 3141fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Target port group identifier */ 3151fd032eeSChristoph Hellwig buf[off++] |= 0x5; 3161fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3171fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3181fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3191fd032eeSChristoph Hellwig buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); 3201fd032eeSChristoph Hellwig buf[off++] = (tg_pt_gp_id & 0xff); 3211fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3221fd032eeSChristoph Hellwig /* 3231fd032eeSChristoph Hellwig * Logical Unit Group identifier, see spc4r17 3241fd032eeSChristoph Hellwig * section 7.7.3.8 3251fd032eeSChristoph Hellwig */ 3261fd032eeSChristoph Hellwig check_lu_gp: 3271fd032eeSChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 3281fd032eeSChristoph Hellwig if (!lu_gp_mem) 3291fd032eeSChristoph Hellwig goto check_scsi_name; 3301fd032eeSChristoph Hellwig 3311fd032eeSChristoph Hellwig spin_lock(&lu_gp_mem->lu_gp_mem_lock); 3321fd032eeSChristoph Hellwig lu_gp = lu_gp_mem->lu_gp; 3331fd032eeSChristoph Hellwig if (!lu_gp) { 3341fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3351fd032eeSChristoph Hellwig goto check_scsi_name; 3361fd032eeSChristoph Hellwig } 3371fd032eeSChristoph Hellwig lu_gp_id = lu_gp->lu_gp_id; 3381fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3391fd032eeSChristoph Hellwig 3401fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3411fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Logical Unit Group identifier */ 3421fd032eeSChristoph Hellwig buf[off++] |= 0x6; 3431fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3441fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3451fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3461fd032eeSChristoph Hellwig buf[off++] = ((lu_gp_id >> 8) & 0xff); 3471fd032eeSChristoph Hellwig buf[off++] = (lu_gp_id & 0xff); 3481fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3491fd032eeSChristoph Hellwig /* 3501fd032eeSChristoph Hellwig * SCSI name string designator, see spc4r17 3511fd032eeSChristoph Hellwig * section 7.7.3.11 3521fd032eeSChristoph Hellwig * 3531fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3541fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3551fd032eeSChristoph Hellwig */ 3561fd032eeSChristoph Hellwig check_scsi_name: 3572aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3581fd032eeSChristoph Hellwig buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 3591fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3601fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3611fd032eeSChristoph Hellwig buf[off] |= 0x10; 3621fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == SCSI name string */ 3631fd032eeSChristoph Hellwig buf[off++] |= 0x8; 3641fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved and length */ 3651fd032eeSChristoph Hellwig /* 3661fd032eeSChristoph Hellwig * SCSI name string identifer containing, $FABRIC_MOD 3671fd032eeSChristoph Hellwig * dependent information. For LIO-Target and iSCSI 3681fd032eeSChristoph Hellwig * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 3691fd032eeSChristoph Hellwig * UTF-8 encoding. 3701fd032eeSChristoph Hellwig */ 3711fd032eeSChristoph Hellwig tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 3721fd032eeSChristoph Hellwig scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 3731fd032eeSChristoph Hellwig tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 3741fd032eeSChristoph Hellwig scsi_name_len += 1 /* Include NULL terminator */; 3751fd032eeSChristoph Hellwig /* 3761fd032eeSChristoph Hellwig * The null-terminated, null-padded (see 4.4.2) SCSI 3771fd032eeSChristoph Hellwig * NAME STRING field contains a UTF-8 format string. 3781fd032eeSChristoph Hellwig * The number of bytes in the SCSI NAME STRING field 3791fd032eeSChristoph Hellwig * (i.e., the value in the DESIGNATOR LENGTH field) 3801fd032eeSChristoph Hellwig * shall be no larger than 256 and shall be a multiple 3811fd032eeSChristoph Hellwig * of four. 3821fd032eeSChristoph Hellwig */ 38303ba84caSHannes Reinecke padding = ((-scsi_name_len) & 3); 3841fd032eeSChristoph Hellwig if (padding) 3851fd032eeSChristoph Hellwig scsi_name_len += padding; 38603ba84caSHannes Reinecke if (scsi_name_len > 256) 38703ba84caSHannes Reinecke scsi_name_len = 256; 3881fd032eeSChristoph Hellwig 3891fd032eeSChristoph Hellwig buf[off-1] = scsi_name_len; 3901fd032eeSChristoph Hellwig off += scsi_name_len; 3911fd032eeSChristoph Hellwig /* Header size + Designation descriptor */ 3921fd032eeSChristoph Hellwig len += (scsi_name_len + 4); 393fbfe858fSHannes Reinecke 394fbfe858fSHannes Reinecke /* 395fbfe858fSHannes Reinecke * Target device designator 396fbfe858fSHannes Reinecke */ 3972aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 398fbfe858fSHannes Reinecke buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 399fbfe858fSHannes Reinecke buf[off] = 0x80; /* Set PIV=1 */ 400fbfe858fSHannes Reinecke /* Set ASSOCIATION == target device: 10b */ 401fbfe858fSHannes Reinecke buf[off] |= 0x20; 402fbfe858fSHannes Reinecke /* DESIGNATOR TYPE == SCSI name string */ 403fbfe858fSHannes Reinecke buf[off++] |= 0x8; 404fbfe858fSHannes Reinecke off += 2; /* Skip over Reserved and length */ 405fbfe858fSHannes Reinecke /* 406fbfe858fSHannes Reinecke * SCSI name string identifer containing, $FABRIC_MOD 407fbfe858fSHannes Reinecke * dependent information. For LIO-Target and iSCSI 408fbfe858fSHannes Reinecke * Target Port, this means "<iSCSI name>" in 409fbfe858fSHannes Reinecke * UTF-8 encoding. 410fbfe858fSHannes Reinecke */ 411fbfe858fSHannes Reinecke scsi_target_len = sprintf(&buf[off], "%s", 412fbfe858fSHannes Reinecke tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 413fbfe858fSHannes Reinecke scsi_target_len += 1 /* Include NULL terminator */; 414fbfe858fSHannes Reinecke /* 415fbfe858fSHannes Reinecke * The null-terminated, null-padded (see 4.4.2) SCSI 416fbfe858fSHannes Reinecke * NAME STRING field contains a UTF-8 format string. 417fbfe858fSHannes Reinecke * The number of bytes in the SCSI NAME STRING field 418fbfe858fSHannes Reinecke * (i.e., the value in the DESIGNATOR LENGTH field) 419fbfe858fSHannes Reinecke * shall be no larger than 256 and shall be a multiple 420fbfe858fSHannes Reinecke * of four. 421fbfe858fSHannes Reinecke */ 422fbfe858fSHannes Reinecke padding = ((-scsi_target_len) & 3); 423fbfe858fSHannes Reinecke if (padding) 424fbfe858fSHannes Reinecke scsi_target_len += padding; 4256a16d7beSRoland Dreier if (scsi_target_len > 256) 4266a16d7beSRoland Dreier scsi_target_len = 256; 427fbfe858fSHannes Reinecke 428fbfe858fSHannes Reinecke buf[off-1] = scsi_target_len; 429fbfe858fSHannes Reinecke off += scsi_target_len; 430fbfe858fSHannes Reinecke 431fbfe858fSHannes Reinecke /* Header size + Designation descriptor */ 432fbfe858fSHannes Reinecke len += (scsi_target_len + 4); 4331fd032eeSChristoph Hellwig } 4341fd032eeSChristoph Hellwig buf[2] = ((len >> 8) & 0xff); 4351fd032eeSChristoph Hellwig buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ 4361fd032eeSChristoph Hellwig return 0; 4371fd032eeSChristoph Hellwig } 4380dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_evpd_83); 4391fd032eeSChristoph Hellwig 4401fd032eeSChristoph Hellwig /* Extended INQUIRY Data VPD Page */ 441de103c93SChristoph Hellwig static sense_reason_t 442de103c93SChristoph Hellwig spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 4431fd032eeSChristoph Hellwig { 444d0c8b259SNicholas Bellinger struct se_device *dev = cmd->se_dev; 445d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 446d0c8b259SNicholas Bellinger 4471fd032eeSChristoph Hellwig buf[3] = 0x3c; 44843bb95c7SNicholas Bellinger /* 44943bb95c7SNicholas Bellinger * Set GRD_CHK + REF_CHK for TYPE1 protection, or GRD_CHK 45043bb95c7SNicholas Bellinger * only for TYPE3 protection. 45143bb95c7SNicholas Bellinger */ 452d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 4539ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT || 4549ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE1_PROT) 45543bb95c7SNicholas Bellinger buf[4] = 0x5; 4569ef5466eSNicholas Bellinger else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT || 4579ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE3_PROT) 45843bb95c7SNicholas Bellinger buf[4] = 0x4; 459d2c5304cSNicholas Bellinger } 46043bb95c7SNicholas Bellinger 4611fd032eeSChristoph Hellwig /* Set HEADSUP, ORDSUP, SIMPSUP */ 4621fd032eeSChristoph Hellwig buf[5] = 0x07; 4631fd032eeSChristoph Hellwig 4641fd032eeSChristoph Hellwig /* If WriteCache emulation is enabled, set V_SUP */ 465814e5b45SChristoph Hellwig if (target_check_wce(dev)) 4661fd032eeSChristoph Hellwig buf[6] = 0x01; 467c66094bfSHannes Reinecke /* If an LBA map is present set R_SUP */ 468c66094bfSHannes Reinecke spin_lock(&cmd->se_dev->t10_alua.lba_map_lock); 469c66094bfSHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 470c66094bfSHannes Reinecke buf[8] = 0x10; 471c66094bfSHannes Reinecke spin_unlock(&cmd->se_dev->t10_alua.lba_map_lock); 4721fd032eeSChristoph Hellwig return 0; 4731fd032eeSChristoph Hellwig } 4741fd032eeSChristoph Hellwig 4751fd032eeSChristoph Hellwig /* Block Limits VPD page */ 476de103c93SChristoph Hellwig static sense_reason_t 477de103c93SChristoph Hellwig spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 4781fd032eeSChristoph Hellwig { 4791fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 4801fd032eeSChristoph Hellwig int have_tp = 0; 4817f7caf6aSAndy Grover int opt, min; 4821fd032eeSChristoph Hellwig 4831fd032eeSChristoph Hellwig /* 4841fd032eeSChristoph Hellwig * Following spc3r22 section 6.5.3 Block Limits VPD page, when 4851fd032eeSChristoph Hellwig * emulate_tpu=1 or emulate_tpws=1 we will be expect a 4861fd032eeSChristoph Hellwig * different page length for Thin Provisioning. 4871fd032eeSChristoph Hellwig */ 4880fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws) 4891fd032eeSChristoph Hellwig have_tp = 1; 4901fd032eeSChristoph Hellwig 4911fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 4921fd032eeSChristoph Hellwig buf[3] = have_tp ? 0x3c : 0x10; 4931fd032eeSChristoph Hellwig 4941fd032eeSChristoph Hellwig /* Set WSNZ to 1 */ 4951fd032eeSChristoph Hellwig buf[4] = 0x01; 4960123a9ecSNicholas Bellinger /* 4970123a9ecSNicholas Bellinger * Set MAXIMUM COMPARE AND WRITE LENGTH 4980123a9ecSNicholas Bellinger */ 4990123a9ecSNicholas Bellinger if (dev->dev_attrib.emulate_caw) 5000123a9ecSNicholas Bellinger buf[5] = 0x01; 5011fd032eeSChristoph Hellwig 5021fd032eeSChristoph Hellwig /* 5031fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH GRANULARITY 5041fd032eeSChristoph Hellwig */ 5057f7caf6aSAndy Grover if (dev->transport->get_io_min && (min = dev->transport->get_io_min(dev))) 5067f7caf6aSAndy Grover put_unaligned_be16(min / dev->dev_attrib.block_size, &buf[6]); 5077f7caf6aSAndy Grover else 5081fd032eeSChristoph Hellwig put_unaligned_be16(1, &buf[6]); 5091fd032eeSChristoph Hellwig 5101fd032eeSChristoph Hellwig /* 5111fd032eeSChristoph Hellwig * Set MAXIMUM TRANSFER LENGTH 5121fd032eeSChristoph Hellwig */ 513046ba642SNicholas Bellinger put_unaligned_be32(dev->dev_attrib.hw_max_sectors, &buf[8]); 5141fd032eeSChristoph Hellwig 5151fd032eeSChristoph Hellwig /* 5161fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH 5171fd032eeSChristoph Hellwig */ 5187f7caf6aSAndy Grover if (dev->transport->get_io_opt && (opt = dev->transport->get_io_opt(dev))) 5197f7caf6aSAndy Grover put_unaligned_be32(opt / dev->dev_attrib.block_size, &buf[12]); 5207f7caf6aSAndy Grover else 5210fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]); 5221fd032eeSChristoph Hellwig 5231fd032eeSChristoph Hellwig /* 5241fd032eeSChristoph Hellwig * Exit now if we don't support TP. 5251fd032eeSChristoph Hellwig */ 5261fd032eeSChristoph Hellwig if (!have_tp) 527773cbaf7SNicholas Bellinger goto max_write_same; 5281fd032eeSChristoph Hellwig 5291fd032eeSChristoph Hellwig /* 5301fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP LBA COUNT 5311fd032eeSChristoph Hellwig */ 5320fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_lba_count, &buf[20]); 5331fd032eeSChristoph Hellwig 5341fd032eeSChristoph Hellwig /* 5351fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 5361fd032eeSChristoph Hellwig */ 5370fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_block_desc_count, 5381fd032eeSChristoph Hellwig &buf[24]); 5391fd032eeSChristoph Hellwig 5401fd032eeSChristoph Hellwig /* 5411fd032eeSChristoph Hellwig * Set OPTIMAL UNMAP GRANULARITY 5421fd032eeSChristoph Hellwig */ 5430fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity, &buf[28]); 5441fd032eeSChristoph Hellwig 5451fd032eeSChristoph Hellwig /* 5461fd032eeSChristoph Hellwig * UNMAP GRANULARITY ALIGNMENT 5471fd032eeSChristoph Hellwig */ 5480fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity_alignment, 5491fd032eeSChristoph Hellwig &buf[32]); 5500fd97ccfSChristoph Hellwig if (dev->dev_attrib.unmap_granularity_alignment != 0) 5511fd032eeSChristoph Hellwig buf[32] |= 0x80; /* Set the UGAVALID bit */ 5521fd032eeSChristoph Hellwig 553773cbaf7SNicholas Bellinger /* 554773cbaf7SNicholas Bellinger * MAXIMUM WRITE SAME LENGTH 555773cbaf7SNicholas Bellinger */ 556773cbaf7SNicholas Bellinger max_write_same: 557773cbaf7SNicholas Bellinger put_unaligned_be64(dev->dev_attrib.max_write_same_len, &buf[36]); 558773cbaf7SNicholas Bellinger 5591fd032eeSChristoph Hellwig return 0; 5601fd032eeSChristoph Hellwig } 5611fd032eeSChristoph Hellwig 5621fd032eeSChristoph Hellwig /* Block Device Characteristics VPD page */ 563de103c93SChristoph Hellwig static sense_reason_t 564de103c93SChristoph Hellwig spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 5651fd032eeSChristoph Hellwig { 5661fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5671fd032eeSChristoph Hellwig 5681fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5691fd032eeSChristoph Hellwig buf[3] = 0x3c; 5700fd97ccfSChristoph Hellwig buf[5] = dev->dev_attrib.is_nonrot ? 1 : 0; 5711fd032eeSChristoph Hellwig 5721fd032eeSChristoph Hellwig return 0; 5731fd032eeSChristoph Hellwig } 5741fd032eeSChristoph Hellwig 5751fd032eeSChristoph Hellwig /* Thin Provisioning VPD */ 576de103c93SChristoph Hellwig static sense_reason_t 577de103c93SChristoph Hellwig spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 5781fd032eeSChristoph Hellwig { 5791fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5801fd032eeSChristoph Hellwig 5811fd032eeSChristoph Hellwig /* 5821fd032eeSChristoph Hellwig * From spc3r22 section 6.5.4 Thin Provisioning VPD page: 5831fd032eeSChristoph Hellwig * 5841fd032eeSChristoph Hellwig * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 5851fd032eeSChristoph Hellwig * zero, then the page length shall be set to 0004h. If the DP bit 5861fd032eeSChristoph Hellwig * is set to one, then the page length shall be set to the value 5871fd032eeSChristoph Hellwig * defined in table 162. 5881fd032eeSChristoph Hellwig */ 5891fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5901fd032eeSChristoph Hellwig 5911fd032eeSChristoph Hellwig /* 5921fd032eeSChristoph Hellwig * Set Hardcoded length mentioned above for DP=0 5931fd032eeSChristoph Hellwig */ 5941fd032eeSChristoph Hellwig put_unaligned_be16(0x0004, &buf[2]); 5951fd032eeSChristoph Hellwig 5961fd032eeSChristoph Hellwig /* 5971fd032eeSChristoph Hellwig * The THRESHOLD EXPONENT field indicates the threshold set size in 5981fd032eeSChristoph Hellwig * LBAs as a power of 2 (i.e., the threshold set size is equal to 5991fd032eeSChristoph Hellwig * 2(threshold exponent)). 6001fd032eeSChristoph Hellwig * 6011fd032eeSChristoph Hellwig * Note that this is currently set to 0x00 as mkp says it will be 6021fd032eeSChristoph Hellwig * changing again. We can enable this once it has settled in T10 6031fd032eeSChristoph Hellwig * and is actually used by Linux/SCSI ML code. 6041fd032eeSChristoph Hellwig */ 6051fd032eeSChristoph Hellwig buf[4] = 0x00; 6061fd032eeSChristoph Hellwig 6071fd032eeSChristoph Hellwig /* 6081fd032eeSChristoph Hellwig * A TPU bit set to one indicates that the device server supports 6091fd032eeSChristoph Hellwig * the UNMAP command (see 5.25). A TPU bit set to zero indicates 6101fd032eeSChristoph Hellwig * that the device server does not support the UNMAP command. 6111fd032eeSChristoph Hellwig */ 6120fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu != 0) 6131fd032eeSChristoph Hellwig buf[5] = 0x80; 6141fd032eeSChristoph Hellwig 6151fd032eeSChristoph Hellwig /* 6161fd032eeSChristoph Hellwig * A TPWS bit set to one indicates that the device server supports 6171fd032eeSChristoph Hellwig * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 6181fd032eeSChristoph Hellwig * A TPWS bit set to zero indicates that the device server does not 6191fd032eeSChristoph Hellwig * support the use of the WRITE SAME (16) command to unmap LBAs. 6201fd032eeSChristoph Hellwig */ 6210fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpws != 0) 622aa04dae4SNicholas Bellinger buf[5] |= 0x40 | 0x20; 6231fd032eeSChristoph Hellwig 6241fd032eeSChristoph Hellwig return 0; 6251fd032eeSChristoph Hellwig } 6261fd032eeSChristoph Hellwig 627c66094bfSHannes Reinecke /* Referrals VPD page */ 628c66094bfSHannes Reinecke static sense_reason_t 629c66094bfSHannes Reinecke spc_emulate_evpd_b3(struct se_cmd *cmd, unsigned char *buf) 630c66094bfSHannes Reinecke { 631c66094bfSHannes Reinecke struct se_device *dev = cmd->se_dev; 632c66094bfSHannes Reinecke 633c66094bfSHannes Reinecke buf[0] = dev->transport->get_device_type(dev); 634c66094bfSHannes Reinecke buf[3] = 0x0c; 635c66094bfSHannes Reinecke put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[8]); 636096b4995SSebastian Herbszt put_unaligned_be32(dev->t10_alua.lba_map_segment_multiplier, &buf[12]); 637c66094bfSHannes Reinecke 638c66094bfSHannes Reinecke return 0; 639c66094bfSHannes Reinecke } 640c66094bfSHannes Reinecke 641de103c93SChristoph Hellwig static sense_reason_t 642de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 6431fd032eeSChristoph Hellwig 6441fd032eeSChristoph Hellwig static struct { 6451fd032eeSChristoph Hellwig uint8_t page; 646de103c93SChristoph Hellwig sense_reason_t (*emulate)(struct se_cmd *, unsigned char *); 6471fd032eeSChristoph Hellwig } evpd_handlers[] = { 6481fd032eeSChristoph Hellwig { .page = 0x00, .emulate = spc_emulate_evpd_00 }, 6491fd032eeSChristoph Hellwig { .page = 0x80, .emulate = spc_emulate_evpd_80 }, 6501fd032eeSChristoph Hellwig { .page = 0x83, .emulate = spc_emulate_evpd_83 }, 6511fd032eeSChristoph Hellwig { .page = 0x86, .emulate = spc_emulate_evpd_86 }, 6521fd032eeSChristoph Hellwig { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, 6531fd032eeSChristoph Hellwig { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, 6541fd032eeSChristoph Hellwig { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, 655c66094bfSHannes Reinecke { .page = 0xb3, .emulate = spc_emulate_evpd_b3 }, 6561fd032eeSChristoph Hellwig }; 6571fd032eeSChristoph Hellwig 6581fd032eeSChristoph Hellwig /* supported vital product data pages */ 659de103c93SChristoph Hellwig static sense_reason_t 660de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 6611fd032eeSChristoph Hellwig { 6621fd032eeSChristoph Hellwig int p; 6631fd032eeSChristoph Hellwig 6641fd032eeSChristoph Hellwig /* 6651fd032eeSChristoph Hellwig * Only report the INQUIRY EVPD=1 pages after a valid NAA 6661fd032eeSChristoph Hellwig * Registered Extended LUN WWN has been set via ConfigFS 6671fd032eeSChristoph Hellwig * during device creation/restart. 6681fd032eeSChristoph Hellwig */ 6690fd97ccfSChristoph Hellwig if (cmd->se_dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 6701fd032eeSChristoph Hellwig buf[3] = ARRAY_SIZE(evpd_handlers); 6711fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) 6721fd032eeSChristoph Hellwig buf[p + 4] = evpd_handlers[p].page; 6731fd032eeSChristoph Hellwig } 6741fd032eeSChristoph Hellwig 6751fd032eeSChristoph Hellwig return 0; 6761fd032eeSChristoph Hellwig } 6771fd032eeSChristoph Hellwig 678de103c93SChristoph Hellwig static sense_reason_t 679de103c93SChristoph Hellwig spc_emulate_inquiry(struct se_cmd *cmd) 6801fd032eeSChristoph Hellwig { 6811fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 682adf653f9SChristoph Hellwig struct se_portal_group *tpg = cmd->se_lun->lun_tpg; 683ffe7b0e9SPaolo Bonzini unsigned char *rbuf; 6841fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 685f82f320eSNicholas Bellinger unsigned char *buf; 686de103c93SChristoph Hellwig sense_reason_t ret; 687de103c93SChristoph Hellwig int p; 6882426bd45SRoland Dreier int len = 0; 6891fd032eeSChristoph Hellwig 690f82f320eSNicholas Bellinger buf = kzalloc(SE_INQUIRY_BUF, GFP_KERNEL); 691f82f320eSNicholas Bellinger if (!buf) { 692f82f320eSNicholas Bellinger pr_err("Unable to allocate response buffer for INQUIRY\n"); 693f82f320eSNicholas Bellinger return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 694f82f320eSNicholas Bellinger } 695dea5f099SNicholas Bellinger 6964cc987eaSNicholas Bellinger if (dev == rcu_access_pointer(tpg->tpg_virt_lun0->lun_se_dev)) 6971fd032eeSChristoph Hellwig buf[0] = 0x3f; /* Not connected */ 6981fd032eeSChristoph Hellwig else 6991fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 7001fd032eeSChristoph Hellwig 7011fd032eeSChristoph Hellwig if (!(cdb[1] & 0x1)) { 7021fd032eeSChristoph Hellwig if (cdb[2]) { 7031fd032eeSChristoph Hellwig pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", 7041fd032eeSChristoph Hellwig cdb[2]); 705de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7061fd032eeSChristoph Hellwig goto out; 7071fd032eeSChristoph Hellwig } 7081fd032eeSChristoph Hellwig 7091fd032eeSChristoph Hellwig ret = spc_emulate_inquiry_std(cmd, buf); 7102426bd45SRoland Dreier len = buf[4] + 5; 7111fd032eeSChristoph Hellwig goto out; 7121fd032eeSChristoph Hellwig } 7131fd032eeSChristoph Hellwig 7141fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 7151fd032eeSChristoph Hellwig if (cdb[2] == evpd_handlers[p].page) { 7161fd032eeSChristoph Hellwig buf[1] = cdb[2]; 7171fd032eeSChristoph Hellwig ret = evpd_handlers[p].emulate(cmd, buf); 7182426bd45SRoland Dreier len = get_unaligned_be16(&buf[2]) + 4; 7191fd032eeSChristoph Hellwig goto out; 7201fd032eeSChristoph Hellwig } 7211fd032eeSChristoph Hellwig } 7221fd032eeSChristoph Hellwig 7231fd032eeSChristoph Hellwig pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 724de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7251fd032eeSChristoph Hellwig 7261fd032eeSChristoph Hellwig out: 727ffe7b0e9SPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 72849df9fc9SNicholas Bellinger if (rbuf) { 729f82f320eSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_INQUIRY_BUF, cmd->data_length)); 7301fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 73149df9fc9SNicholas Bellinger } 732f82f320eSNicholas Bellinger kfree(buf); 7331fd032eeSChristoph Hellwig 7341fd032eeSChristoph Hellwig if (!ret) 7352426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, len); 7361fd032eeSChristoph Hellwig return ret; 7371fd032eeSChristoph Hellwig } 7381fd032eeSChristoph Hellwig 739d45aca42SNicholas Bellinger static int spc_modesense_rwrecovery(struct se_cmd *cmd, u8 pc, u8 *p) 7401fd032eeSChristoph Hellwig { 7411fd032eeSChristoph Hellwig p[0] = 0x01; 7421fd032eeSChristoph Hellwig p[1] = 0x0a; 7431fd032eeSChristoph Hellwig 744d4b2b867SRoland Dreier /* No changeable values for now */ 745d4b2b867SRoland Dreier if (pc == 1) 746d4b2b867SRoland Dreier goto out; 747d4b2b867SRoland Dreier 748d4b2b867SRoland Dreier out: 7491fd032eeSChristoph Hellwig return 12; 7501fd032eeSChristoph Hellwig } 7511fd032eeSChristoph Hellwig 752d45aca42SNicholas Bellinger static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p) 7531fd032eeSChristoph Hellwig { 754d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 755d45aca42SNicholas Bellinger struct se_session *sess = cmd->se_sess; 756d45aca42SNicholas Bellinger 7571fd032eeSChristoph Hellwig p[0] = 0x0a; 7581fd032eeSChristoph Hellwig p[1] = 0x0a; 759d4b2b867SRoland Dreier 760d4b2b867SRoland Dreier /* No changeable values for now */ 761d4b2b867SRoland Dreier if (pc == 1) 762d4b2b867SRoland Dreier goto out; 763d4b2b867SRoland Dreier 7641fd032eeSChristoph Hellwig p[2] = 2; 7651fd032eeSChristoph Hellwig /* 7661fd032eeSChristoph Hellwig * From spc4r23, 7.4.7 Control mode page 7671fd032eeSChristoph Hellwig * 7681fd032eeSChristoph Hellwig * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 7691fd032eeSChristoph Hellwig * restrictions on the algorithm used for reordering commands 7701fd032eeSChristoph Hellwig * having the SIMPLE task attribute (see SAM-4). 7711fd032eeSChristoph Hellwig * 7721fd032eeSChristoph Hellwig * Table 368 -- QUEUE ALGORITHM MODIFIER field 7731fd032eeSChristoph Hellwig * Code Description 7741fd032eeSChristoph Hellwig * 0h Restricted reordering 7751fd032eeSChristoph Hellwig * 1h Unrestricted reordering allowed 7761fd032eeSChristoph Hellwig * 2h to 7h Reserved 7771fd032eeSChristoph Hellwig * 8h to Fh Vendor specific 7781fd032eeSChristoph Hellwig * 7791fd032eeSChristoph Hellwig * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 7801fd032eeSChristoph Hellwig * the device server shall order the processing sequence of commands 7811fd032eeSChristoph Hellwig * having the SIMPLE task attribute such that data integrity is maintained 7821fd032eeSChristoph Hellwig * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 7831fd032eeSChristoph Hellwig * requests is halted at any time, the final value of all data observable 7841fd032eeSChristoph Hellwig * on the medium shall be the same as if all the commands had been processed 7851fd032eeSChristoph Hellwig * with the ORDERED task attribute). 7861fd032eeSChristoph Hellwig * 7871fd032eeSChristoph Hellwig * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 7881fd032eeSChristoph Hellwig * device server may reorder the processing sequence of commands having the 7891fd032eeSChristoph Hellwig * SIMPLE task attribute in any manner. Any data integrity exposures related to 7901fd032eeSChristoph Hellwig * command sequence order shall be explicitly handled by the application client 7911fd032eeSChristoph Hellwig * through the selection of appropriate ommands and task attributes. 7921fd032eeSChristoph Hellwig */ 7930fd97ccfSChristoph Hellwig p[3] = (dev->dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 7941fd032eeSChristoph Hellwig /* 7951fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 7961fd032eeSChristoph Hellwig * 7971fd032eeSChristoph Hellwig * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 7981fd032eeSChristoph Hellwig * 7991fd032eeSChristoph Hellwig * 00b: The logical unit shall clear any unit attention condition 8001fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8011fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when a com- 8021fd032eeSChristoph Hellwig * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 8031fd032eeSChristoph Hellwig * status. 8041fd032eeSChristoph Hellwig * 8051fd032eeSChristoph Hellwig * 10b: The logical unit shall not clear any unit attention condition 8061fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8071fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when 8081fd032eeSChristoph Hellwig * a command is completed with BUSY, TASK SET FULL, or RESERVATION 8091fd032eeSChristoph Hellwig * CONFLICT status. 8101fd032eeSChristoph Hellwig * 8111fd032eeSChristoph Hellwig * 11b a The logical unit shall not clear any unit attention condition 8121fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8131fd032eeSChristoph Hellwig * status and shall establish a unit attention condition for the 8141fd032eeSChristoph Hellwig * initiator port associated with the I_T nexus on which the BUSY, 8151fd032eeSChristoph Hellwig * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 8161fd032eeSChristoph Hellwig * Depending on the status, the additional sense code shall be set to 8171fd032eeSChristoph Hellwig * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 8181fd032eeSChristoph Hellwig * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 8191fd032eeSChristoph Hellwig * command, a unit attention condition shall be established only once 8201fd032eeSChristoph Hellwig * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 8211fd032eeSChristoph Hellwig * to the number of commands completed with one of those status codes. 8221fd032eeSChristoph Hellwig */ 8230fd97ccfSChristoph Hellwig p[4] = (dev->dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : 8240fd97ccfSChristoph Hellwig (dev->dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; 8251fd032eeSChristoph Hellwig /* 8261fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8271fd032eeSChristoph Hellwig * 8281fd032eeSChristoph Hellwig * Task Aborted Status (TAS) bit set to zero. 8291fd032eeSChristoph Hellwig * 8301fd032eeSChristoph Hellwig * A task aborted status (TAS) bit set to zero specifies that aborted 8311fd032eeSChristoph Hellwig * tasks shall be terminated by the device server without any response 8321fd032eeSChristoph Hellwig * to the application client. A TAS bit set to one specifies that tasks 8331fd032eeSChristoph Hellwig * aborted by the actions of an I_T nexus other than the I_T nexus on 8341fd032eeSChristoph Hellwig * which the command was received shall be completed with TASK ABORTED 8351fd032eeSChristoph Hellwig * status (see SAM-4). 8361fd032eeSChristoph Hellwig */ 8370fd97ccfSChristoph Hellwig p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00; 8380c30f421SNicholas Bellinger /* 8390c30f421SNicholas Bellinger * From spc4r30, section 7.5.7 Control mode page 8400c30f421SNicholas Bellinger * 8410c30f421SNicholas Bellinger * Application Tag Owner (ATO) bit set to one. 8420c30f421SNicholas Bellinger * 8430c30f421SNicholas Bellinger * If the ATO bit is set to one the device server shall not modify the 8440c30f421SNicholas Bellinger * LOGICAL BLOCK APPLICATION TAG field and, depending on the protection 8450c30f421SNicholas Bellinger * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE 8460c30f421SNicholas Bellinger * TAG field. 8470c30f421SNicholas Bellinger */ 848d45aca42SNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 8499ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || sess->sess_prot_type) 8500c30f421SNicholas Bellinger p[5] |= 0x80; 851d45aca42SNicholas Bellinger } 8520c30f421SNicholas Bellinger 8531fd032eeSChristoph Hellwig p[8] = 0xff; 8541fd032eeSChristoph Hellwig p[9] = 0xff; 8551fd032eeSChristoph Hellwig p[11] = 30; 8561fd032eeSChristoph Hellwig 857d4b2b867SRoland Dreier out: 8581fd032eeSChristoph Hellwig return 12; 8591fd032eeSChristoph Hellwig } 8601fd032eeSChristoph Hellwig 861d45aca42SNicholas Bellinger static int spc_modesense_caching(struct se_cmd *cmd, u8 pc, u8 *p) 8621fd032eeSChristoph Hellwig { 863d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 864d45aca42SNicholas Bellinger 8651fd032eeSChristoph Hellwig p[0] = 0x08; 8661fd032eeSChristoph Hellwig p[1] = 0x12; 867d4b2b867SRoland Dreier 868d4b2b867SRoland Dreier /* No changeable values for now */ 869d4b2b867SRoland Dreier if (pc == 1) 870d4b2b867SRoland Dreier goto out; 871d4b2b867SRoland Dreier 872814e5b45SChristoph Hellwig if (target_check_wce(dev)) 8731fd032eeSChristoph Hellwig p[2] = 0x04; /* Write Cache Enable */ 8741fd032eeSChristoph Hellwig p[12] = 0x20; /* Disabled Read Ahead */ 8751fd032eeSChristoph Hellwig 876d4b2b867SRoland Dreier out: 8771fd032eeSChristoph Hellwig return 20; 8781fd032eeSChristoph Hellwig } 8791fd032eeSChristoph Hellwig 880d45aca42SNicholas Bellinger static int spc_modesense_informational_exceptions(struct se_cmd *cmd, u8 pc, unsigned char *p) 8810f6d64ceSRoland Dreier { 8820f6d64ceSRoland Dreier p[0] = 0x1c; 8830f6d64ceSRoland Dreier p[1] = 0x0a; 8840f6d64ceSRoland Dreier 8850f6d64ceSRoland Dreier /* No changeable values for now */ 8860f6d64ceSRoland Dreier if (pc == 1) 8870f6d64ceSRoland Dreier goto out; 8880f6d64ceSRoland Dreier 8890f6d64ceSRoland Dreier out: 8900f6d64ceSRoland Dreier return 12; 8910f6d64ceSRoland Dreier } 8920f6d64ceSRoland Dreier 893d4b2b867SRoland Dreier static struct { 894d4b2b867SRoland Dreier uint8_t page; 895d4b2b867SRoland Dreier uint8_t subpage; 896d45aca42SNicholas Bellinger int (*emulate)(struct se_cmd *, u8, unsigned char *); 897d4b2b867SRoland Dreier } modesense_handlers[] = { 898d4b2b867SRoland Dreier { .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery }, 899d4b2b867SRoland Dreier { .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching }, 900d4b2b867SRoland Dreier { .page = 0x0a, .subpage = 0x00, .emulate = spc_modesense_control }, 9010f6d64ceSRoland Dreier { .page = 0x1c, .subpage = 0x00, .emulate = spc_modesense_informational_exceptions }, 902d4b2b867SRoland Dreier }; 903d4b2b867SRoland Dreier 9041fd032eeSChristoph Hellwig static void spc_modesense_write_protect(unsigned char *buf, int type) 9051fd032eeSChristoph Hellwig { 9061fd032eeSChristoph Hellwig /* 9071fd032eeSChristoph Hellwig * I believe that the WP bit (bit 7) in the mode header is the same for 9081fd032eeSChristoph Hellwig * all device types.. 9091fd032eeSChristoph Hellwig */ 9101fd032eeSChristoph Hellwig switch (type) { 9111fd032eeSChristoph Hellwig case TYPE_DISK: 9121fd032eeSChristoph Hellwig case TYPE_TAPE: 9131fd032eeSChristoph Hellwig default: 9141fd032eeSChristoph Hellwig buf[0] |= 0x80; /* WP bit */ 9151fd032eeSChristoph Hellwig break; 9161fd032eeSChristoph Hellwig } 9171fd032eeSChristoph Hellwig } 9181fd032eeSChristoph Hellwig 9191fd032eeSChristoph Hellwig static void spc_modesense_dpofua(unsigned char *buf, int type) 9201fd032eeSChristoph Hellwig { 9211fd032eeSChristoph Hellwig switch (type) { 9221fd032eeSChristoph Hellwig case TYPE_DISK: 9231fd032eeSChristoph Hellwig buf[0] |= 0x10; /* DPOFUA bit */ 9241fd032eeSChristoph Hellwig break; 9251fd032eeSChristoph Hellwig default: 9261fd032eeSChristoph Hellwig break; 9271fd032eeSChristoph Hellwig } 9281fd032eeSChristoph Hellwig } 9291fd032eeSChristoph Hellwig 930d4b2b867SRoland Dreier static int spc_modesense_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 931d4b2b867SRoland Dreier { 932d4b2b867SRoland Dreier *buf++ = 8; 933d4b2b867SRoland Dreier put_unaligned_be32(min(blocks, 0xffffffffull), buf); 934d4b2b867SRoland Dreier buf += 4; 935d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 936d4b2b867SRoland Dreier return 9; 937d4b2b867SRoland Dreier } 938d4b2b867SRoland Dreier 939d4b2b867SRoland Dreier static int spc_modesense_long_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 940d4b2b867SRoland Dreier { 941d4b2b867SRoland Dreier if (blocks <= 0xffffffff) 942d4b2b867SRoland Dreier return spc_modesense_blockdesc(buf + 3, blocks, block_size) + 3; 943d4b2b867SRoland Dreier 944d4b2b867SRoland Dreier *buf++ = 1; /* LONGLBA */ 945d4b2b867SRoland Dreier buf += 2; 946d4b2b867SRoland Dreier *buf++ = 16; 947d4b2b867SRoland Dreier put_unaligned_be64(blocks, buf); 948d4b2b867SRoland Dreier buf += 12; 949d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 950d4b2b867SRoland Dreier 951d4b2b867SRoland Dreier return 17; 952d4b2b867SRoland Dreier } 953d4b2b867SRoland Dreier 954de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) 9551fd032eeSChristoph Hellwig { 9561fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 9571fd032eeSChristoph Hellwig char *cdb = cmd->t_task_cdb; 958cab9609bSNicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF], *rbuf; 9591fd032eeSChristoph Hellwig int type = dev->transport->get_device_type(dev); 9601fd032eeSChristoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 961d4b2b867SRoland Dreier bool dbd = !!(cdb[1] & 0x08); 962d4b2b867SRoland Dreier bool llba = ten ? !!(cdb[1] & 0x10) : false; 963d4b2b867SRoland Dreier u8 pc = cdb[2] >> 6; 964d4b2b867SRoland Dreier u8 page = cdb[2] & 0x3f; 965d4b2b867SRoland Dreier u8 subpage = cdb[3]; 9661fd032eeSChristoph Hellwig int length = 0; 967d4b2b867SRoland Dreier int ret; 968d4b2b867SRoland Dreier int i; 96929a05deeSNicholas Bellinger bool read_only = target_lun_is_rdonly(cmd);; 9701fd032eeSChristoph Hellwig 971cab9609bSNicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 972cab9609bSNicholas Bellinger 973fecae40aSNicholas Bellinger /* 974fecae40aSNicholas Bellinger * Skip over MODE DATA LENGTH + MEDIUM TYPE fields to byte 3 for 975fecae40aSNicholas Bellinger * MODE_SENSE_10 and byte 2 for MODE_SENSE (6). 976fecae40aSNicholas Bellinger */ 977fecae40aSNicholas Bellinger length = ten ? 3 : 2; 978d4b2b867SRoland Dreier 979d4b2b867SRoland Dreier /* DEVICE-SPECIFIC PARAMETER */ 98029a05deeSNicholas Bellinger if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || read_only) 981d4b2b867SRoland Dreier spc_modesense_write_protect(&buf[length], type); 982d4b2b867SRoland Dreier 983814e5b45SChristoph Hellwig /* 984814e5b45SChristoph Hellwig * SBC only allows us to enable FUA and DPO together. Fortunately 985814e5b45SChristoph Hellwig * DPO is explicitly specified as a hint, so a noop is a perfectly 986814e5b45SChristoph Hellwig * valid implementation. 987814e5b45SChristoph Hellwig */ 988814e5b45SChristoph Hellwig if (target_check_fua(dev)) 989d4b2b867SRoland Dreier spc_modesense_dpofua(&buf[length], type); 990d4b2b867SRoland Dreier 991d4b2b867SRoland Dreier ++length; 992d4b2b867SRoland Dreier 993d4b2b867SRoland Dreier /* BLOCK DESCRIPTOR */ 994d4b2b867SRoland Dreier 995d4b2b867SRoland Dreier /* 996d4b2b867SRoland Dreier * For now we only include a block descriptor for disk (SBC) 997d4b2b867SRoland Dreier * devices; other command sets use a slightly different format. 998d4b2b867SRoland Dreier */ 999d4b2b867SRoland Dreier if (!dbd && type == TYPE_DISK) { 1000d4b2b867SRoland Dreier u64 blocks = dev->transport->get_blocks(dev); 1001d4b2b867SRoland Dreier u32 block_size = dev->dev_attrib.block_size; 10021fd032eeSChristoph Hellwig 10031fd032eeSChristoph Hellwig if (ten) { 1004d4b2b867SRoland Dreier if (llba) { 1005d4b2b867SRoland Dreier length += spc_modesense_long_blockdesc(&buf[length], 1006d4b2b867SRoland Dreier blocks, block_size); 10071fd032eeSChristoph Hellwig } else { 1008d4b2b867SRoland Dreier length += 3; 1009d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], 1010d4b2b867SRoland Dreier blocks, block_size); 1011d4b2b867SRoland Dreier } 1012d4b2b867SRoland Dreier } else { 1013d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], blocks, 1014d4b2b867SRoland Dreier block_size); 1015d4b2b867SRoland Dreier } 1016d4b2b867SRoland Dreier } else { 1017d4b2b867SRoland Dreier if (ten) 1018d4b2b867SRoland Dreier length += 4; 1019d4b2b867SRoland Dreier else 1020d4b2b867SRoland Dreier length += 1; 10211fd032eeSChristoph Hellwig } 10221fd032eeSChristoph Hellwig 1023d4b2b867SRoland Dreier if (page == 0x3f) { 1024d4b2b867SRoland Dreier if (subpage != 0x00 && subpage != 0xff) { 1025de103c93SChristoph Hellwig pr_warn("MODE_SENSE: Invalid subpage code: 0x%02x\n", subpage); 1026de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 1027d4b2b867SRoland Dreier } 1028d4b2b867SRoland Dreier 1029d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) { 1030d4b2b867SRoland Dreier /* 1031d4b2b867SRoland Dreier * Tricky way to say all subpage 00h for 1032d4b2b867SRoland Dreier * subpage==0, all subpages for subpage==0xff 1033d4b2b867SRoland Dreier * (and we just checked above that those are 1034d4b2b867SRoland Dreier * the only two possibilities). 1035d4b2b867SRoland Dreier */ 1036d4b2b867SRoland Dreier if ((modesense_handlers[i].subpage & ~subpage) == 0) { 1037d45aca42SNicholas Bellinger ret = modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1038d4b2b867SRoland Dreier if (!ten && length + ret >= 255) 1039d4b2b867SRoland Dreier break; 1040d4b2b867SRoland Dreier length += ret; 1041d4b2b867SRoland Dreier } 1042d4b2b867SRoland Dreier } 1043d4b2b867SRoland Dreier 1044d4b2b867SRoland Dreier goto set_length; 1045d4b2b867SRoland Dreier } 1046d4b2b867SRoland Dreier 1047d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 1048d4b2b867SRoland Dreier if (modesense_handlers[i].page == page && 1049d4b2b867SRoland Dreier modesense_handlers[i].subpage == subpage) { 1050d45aca42SNicholas Bellinger length += modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1051d4b2b867SRoland Dreier goto set_length; 1052d4b2b867SRoland Dreier } 1053d4b2b867SRoland Dreier 1054d4b2b867SRoland Dreier /* 1055d4b2b867SRoland Dreier * We don't intend to implement: 1056d4b2b867SRoland Dreier * - obsolete page 03h "format parameters" (checked by Solaris) 1057d4b2b867SRoland Dreier */ 1058d4b2b867SRoland Dreier if (page != 0x03) 1059d4b2b867SRoland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 1060d4b2b867SRoland Dreier page, subpage); 1061d4b2b867SRoland Dreier 1062de103c93SChristoph Hellwig return TCM_UNKNOWN_MODE_PAGE; 1063d4b2b867SRoland Dreier 1064d4b2b867SRoland Dreier set_length: 1065d4b2b867SRoland Dreier if (ten) 1066d4b2b867SRoland Dreier put_unaligned_be16(length - 2, buf); 1067d4b2b867SRoland Dreier else 1068d4b2b867SRoland Dreier buf[0] = length - 1; 1069d4b2b867SRoland Dreier 1070cab9609bSNicholas Bellinger rbuf = transport_kmap_data_sg(cmd); 1071cab9609bSNicholas Bellinger if (rbuf) { 1072cab9609bSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_MODE_PAGE_BUF, cmd->data_length)); 1073cab9609bSNicholas Bellinger transport_kunmap_data_sg(cmd); 1074d4b2b867SRoland Dreier } 1075d4b2b867SRoland Dreier 10762426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, length); 10771fd032eeSChristoph Hellwig return 0; 10781fd032eeSChristoph Hellwig } 10791fd032eeSChristoph Hellwig 1080de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) 10813a3c5e4aSRoland Dreier { 10823a3c5e4aSRoland Dreier char *cdb = cmd->t_task_cdb; 10833a3c5e4aSRoland Dreier bool ten = cdb[0] == MODE_SELECT_10; 10843a3c5e4aSRoland Dreier int off = ten ? 8 : 4; 10853a3c5e4aSRoland Dreier bool pf = !!(cdb[1] & 0x10); 10863a3c5e4aSRoland Dreier u8 page, subpage; 10873a3c5e4aSRoland Dreier unsigned char *buf; 10883a3c5e4aSRoland Dreier unsigned char tbuf[SE_MODE_PAGE_BUF]; 10893a3c5e4aSRoland Dreier int length; 10903abff1e5SChristoph Hellwig sense_reason_t ret = 0; 10913a3c5e4aSRoland Dreier int i; 10923a3c5e4aSRoland Dreier 109371f41fe1SRoland Dreier if (!cmd->data_length) { 109471f41fe1SRoland Dreier target_complete_cmd(cmd, GOOD); 109571f41fe1SRoland Dreier return 0; 109671f41fe1SRoland Dreier } 109771f41fe1SRoland Dreier 109871f41fe1SRoland Dreier if (cmd->data_length < off + 2) 109971f41fe1SRoland Dreier return TCM_PARAMETER_LIST_LENGTH_ERROR; 110071f41fe1SRoland Dreier 11013a3c5e4aSRoland Dreier buf = transport_kmap_data_sg(cmd); 1102de103c93SChristoph Hellwig if (!buf) 1103de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 11043a3c5e4aSRoland Dreier 11053a3c5e4aSRoland Dreier if (!pf) { 1106de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 11073a3c5e4aSRoland Dreier goto out; 11083a3c5e4aSRoland Dreier } 11093a3c5e4aSRoland Dreier 11103a3c5e4aSRoland Dreier page = buf[off] & 0x3f; 11113a3c5e4aSRoland Dreier subpage = buf[off] & 0x40 ? buf[off + 1] : 0; 11123a3c5e4aSRoland Dreier 11133a3c5e4aSRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 11143a3c5e4aSRoland Dreier if (modesense_handlers[i].page == page && 11153a3c5e4aSRoland Dreier modesense_handlers[i].subpage == subpage) { 11163a3c5e4aSRoland Dreier memset(tbuf, 0, SE_MODE_PAGE_BUF); 1117d45aca42SNicholas Bellinger length = modesense_handlers[i].emulate(cmd, 0, tbuf); 11183a3c5e4aSRoland Dreier goto check_contents; 11193a3c5e4aSRoland Dreier } 11203a3c5e4aSRoland Dreier 1121de103c93SChristoph Hellwig ret = TCM_UNKNOWN_MODE_PAGE; 11223a3c5e4aSRoland Dreier goto out; 11233a3c5e4aSRoland Dreier 11243a3c5e4aSRoland Dreier check_contents: 112571f41fe1SRoland Dreier if (cmd->data_length < off + length) { 112671f41fe1SRoland Dreier ret = TCM_PARAMETER_LIST_LENGTH_ERROR; 112771f41fe1SRoland Dreier goto out; 112871f41fe1SRoland Dreier } 112971f41fe1SRoland Dreier 1130de103c93SChristoph Hellwig if (memcmp(buf + off, tbuf, length)) 1131de103c93SChristoph Hellwig ret = TCM_INVALID_PARAMETER_LIST; 11323a3c5e4aSRoland Dreier 11333a3c5e4aSRoland Dreier out: 11343a3c5e4aSRoland Dreier transport_kunmap_data_sg(cmd); 11353a3c5e4aSRoland Dreier 11363a3c5e4aSRoland Dreier if (!ret) 11373a3c5e4aSRoland Dreier target_complete_cmd(cmd, GOOD); 11383a3c5e4aSRoland Dreier return ret; 11393a3c5e4aSRoland Dreier } 11403a3c5e4aSRoland Dreier 1141de103c93SChristoph Hellwig static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd) 11421fd032eeSChristoph Hellwig { 11431fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 114432a8811fSPaolo Bonzini unsigned char *rbuf; 11451fd032eeSChristoph Hellwig u8 ua_asc = 0, ua_ascq = 0; 114632a8811fSPaolo Bonzini unsigned char buf[SE_SENSE_BUF]; 114732a8811fSPaolo Bonzini 114832a8811fSPaolo Bonzini memset(buf, 0, SE_SENSE_BUF); 11491fd032eeSChristoph Hellwig 11501fd032eeSChristoph Hellwig if (cdb[1] & 0x01) { 11511fd032eeSChristoph Hellwig pr_err("REQUEST_SENSE description emulation not" 11521fd032eeSChristoph Hellwig " supported\n"); 1153de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 11541fd032eeSChristoph Hellwig } 11551fd032eeSChristoph Hellwig 115632a8811fSPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 1157de103c93SChristoph Hellwig if (!rbuf) 1158de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1159de103c93SChristoph Hellwig 11609ec1e1ceSSagi Grimberg if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) 11619ec1e1ceSSagi Grimberg scsi_build_sense_buffer(0, buf, UNIT_ATTENTION, 11629ec1e1ceSSagi Grimberg ua_asc, ua_ascq); 11639ec1e1ceSSagi Grimberg else 11649ec1e1ceSSagi Grimberg scsi_build_sense_buffer(0, buf, NO_SENSE, 0x0, 0x0); 11651fd032eeSChristoph Hellwig 116632a8811fSPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 11671fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 116832a8811fSPaolo Bonzini 11691fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 11701fd032eeSChristoph Hellwig return 0; 11711fd032eeSChristoph Hellwig } 11721fd032eeSChristoph Hellwig 1173de103c93SChristoph Hellwig sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd) 1174d1b1f805SChristoph Hellwig { 1175d1b1f805SChristoph Hellwig struct se_dev_entry *deve; 1176d1b1f805SChristoph Hellwig struct se_session *sess = cmd->se_sess; 117729a05deeSNicholas Bellinger struct se_node_acl *nacl; 1178d1b1f805SChristoph Hellwig unsigned char *buf; 117929a05deeSNicholas Bellinger u32 lun_count = 0, offset = 8; 1180d1b1f805SChristoph Hellwig 1181d1b1f805SChristoph Hellwig if (cmd->data_length < 16) { 1182d1b1f805SChristoph Hellwig pr_warn("REPORT LUNS allocation length %u too small\n", 1183d1b1f805SChristoph Hellwig cmd->data_length); 1184de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 1185d1b1f805SChristoph Hellwig } 1186d1b1f805SChristoph Hellwig 1187d1b1f805SChristoph Hellwig buf = transport_kmap_data_sg(cmd); 1188d1b1f805SChristoph Hellwig if (!buf) 1189de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1190d1b1f805SChristoph Hellwig 1191d1b1f805SChristoph Hellwig /* 1192d1b1f805SChristoph Hellwig * If no struct se_session pointer is present, this struct se_cmd is 1193d1b1f805SChristoph Hellwig * coming via a target_core_mod PASSTHROUGH op, and not through 1194d1b1f805SChristoph Hellwig * a $FABRIC_MOD. In that case, report LUN=0 only. 1195d1b1f805SChristoph Hellwig */ 1196d1b1f805SChristoph Hellwig if (!sess) { 1197d1b1f805SChristoph Hellwig int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); 1198d1b1f805SChristoph Hellwig lun_count = 1; 1199d1b1f805SChristoph Hellwig goto done; 1200d1b1f805SChristoph Hellwig } 120129a05deeSNicholas Bellinger nacl = sess->se_node_acl; 1202d1b1f805SChristoph Hellwig 120329a05deeSNicholas Bellinger rcu_read_lock(); 120429a05deeSNicholas Bellinger hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { 1205d1b1f805SChristoph Hellwig /* 1206d1b1f805SChristoph Hellwig * We determine the correct LUN LIST LENGTH even once we 1207d1b1f805SChristoph Hellwig * have reached the initial allocation length. 1208d1b1f805SChristoph Hellwig * See SPC2-R20 7.19. 1209d1b1f805SChristoph Hellwig */ 1210d1b1f805SChristoph Hellwig lun_count++; 1211d1b1f805SChristoph Hellwig if ((offset + 8) > cmd->data_length) 1212d1b1f805SChristoph Hellwig continue; 1213d1b1f805SChristoph Hellwig 1214d1b1f805SChristoph Hellwig int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); 1215d1b1f805SChristoph Hellwig offset += 8; 1216d1b1f805SChristoph Hellwig } 121729a05deeSNicholas Bellinger rcu_read_unlock(); 1218d1b1f805SChristoph Hellwig 1219d1b1f805SChristoph Hellwig /* 1220d1b1f805SChristoph Hellwig * See SPC3 r07, page 159. 1221d1b1f805SChristoph Hellwig */ 1222d1b1f805SChristoph Hellwig done: 1223d1b1f805SChristoph Hellwig lun_count *= 8; 1224d1b1f805SChristoph Hellwig buf[0] = ((lun_count >> 24) & 0xff); 1225d1b1f805SChristoph Hellwig buf[1] = ((lun_count >> 16) & 0xff); 1226d1b1f805SChristoph Hellwig buf[2] = ((lun_count >> 8) & 0xff); 1227d1b1f805SChristoph Hellwig buf[3] = (lun_count & 0xff); 1228d1b1f805SChristoph Hellwig transport_kunmap_data_sg(cmd); 1229d1b1f805SChristoph Hellwig 12302426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, 8 + lun_count * 8); 1231d1b1f805SChristoph Hellwig return 0; 1232d1b1f805SChristoph Hellwig } 12338de530a5SChristoph Hellwig EXPORT_SYMBOL(spc_emulate_report_luns); 1234d1b1f805SChristoph Hellwig 1235de103c93SChristoph Hellwig static sense_reason_t 1236de103c93SChristoph Hellwig spc_emulate_testunitready(struct se_cmd *cmd) 12371fd032eeSChristoph Hellwig { 12381fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 12391fd032eeSChristoph Hellwig return 0; 12401fd032eeSChristoph Hellwig } 12411fd032eeSChristoph Hellwig 1242de103c93SChristoph Hellwig sense_reason_t 1243de103c93SChristoph Hellwig spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) 124488455ec4SChristoph Hellwig { 1245eba2ca45SNicholas Bellinger struct se_device *dev = cmd->se_dev; 124688455ec4SChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 124788455ec4SChristoph Hellwig 124888455ec4SChristoph Hellwig switch (cdb[0]) { 124988455ec4SChristoph Hellwig case MODE_SELECT: 125088455ec4SChristoph Hellwig *size = cdb[4]; 12513a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 125288455ec4SChristoph Hellwig break; 125388455ec4SChristoph Hellwig case MODE_SELECT_10: 125488455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 12553a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 125688455ec4SChristoph Hellwig break; 125788455ec4SChristoph Hellwig case MODE_SENSE: 125888455ec4SChristoph Hellwig *size = cdb[4]; 12591fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 126088455ec4SChristoph Hellwig break; 126188455ec4SChristoph Hellwig case MODE_SENSE_10: 126288455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 12631fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 126488455ec4SChristoph Hellwig break; 126588455ec4SChristoph Hellwig case LOG_SELECT: 126688455ec4SChristoph Hellwig case LOG_SENSE: 126788455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 126888455ec4SChristoph Hellwig break; 126988455ec4SChristoph Hellwig case PERSISTENT_RESERVE_IN: 127088455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1271d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_in; 127288455ec4SChristoph Hellwig break; 127388455ec4SChristoph Hellwig case PERSISTENT_RESERVE_OUT: 127488455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1275d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_out; 127688455ec4SChristoph Hellwig break; 127788455ec4SChristoph Hellwig case RELEASE: 127888455ec4SChristoph Hellwig case RELEASE_10: 127988455ec4SChristoph Hellwig if (cdb[0] == RELEASE_10) 128088455ec4SChristoph Hellwig *size = (cdb[7] << 8) | cdb[8]; 128188455ec4SChristoph Hellwig else 128288455ec4SChristoph Hellwig *size = cmd->data_length; 128388455ec4SChristoph Hellwig 128488455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_release; 128588455ec4SChristoph Hellwig break; 128688455ec4SChristoph Hellwig case RESERVE: 128788455ec4SChristoph Hellwig case RESERVE_10: 128888455ec4SChristoph Hellwig /* 128988455ec4SChristoph Hellwig * The SPC-2 RESERVE does not contain a size in the SCSI CDB. 129088455ec4SChristoph Hellwig * Assume the passthrough or $FABRIC_MOD will tell us about it. 129188455ec4SChristoph Hellwig */ 129288455ec4SChristoph Hellwig if (cdb[0] == RESERVE_10) 129388455ec4SChristoph Hellwig *size = (cdb[7] << 8) | cdb[8]; 129488455ec4SChristoph Hellwig else 129588455ec4SChristoph Hellwig *size = cmd->data_length; 129688455ec4SChristoph Hellwig 129788455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_reserve; 129888455ec4SChristoph Hellwig break; 129988455ec4SChristoph Hellwig case REQUEST_SENSE: 130088455ec4SChristoph Hellwig *size = cdb[4]; 13011fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_request_sense; 130288455ec4SChristoph Hellwig break; 130388455ec4SChristoph Hellwig case INQUIRY: 130488455ec4SChristoph Hellwig *size = (cdb[3] << 8) + cdb[4]; 130588455ec4SChristoph Hellwig 130688455ec4SChristoph Hellwig /* 1307125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for INQUIRY. 130888455ec4SChristoph Hellwig * See spc4r17 section 5.3 130988455ec4SChristoph Hellwig */ 131068d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 13111fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_inquiry; 131288455ec4SChristoph Hellwig break; 131388455ec4SChristoph Hellwig case SECURITY_PROTOCOL_IN: 131488455ec4SChristoph Hellwig case SECURITY_PROTOCOL_OUT: 131588455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 131688455ec4SChristoph Hellwig break; 131788455ec4SChristoph Hellwig case EXTENDED_COPY: 131804b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 131904b1b795SNicholas Bellinger cmd->execute_cmd = target_do_xcopy; 132004b1b795SNicholas Bellinger break; 132188455ec4SChristoph Hellwig case RECEIVE_COPY_RESULTS: 132204b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 132304b1b795SNicholas Bellinger cmd->execute_cmd = target_do_receive_copy_results; 132404b1b795SNicholas Bellinger break; 132504b1b795SNicholas Bellinger case READ_ATTRIBUTE: 132688455ec4SChristoph Hellwig case WRITE_ATTRIBUTE: 132788455ec4SChristoph Hellwig *size = (cdb[10] << 24) | (cdb[11] << 16) | 132888455ec4SChristoph Hellwig (cdb[12] << 8) | cdb[13]; 132988455ec4SChristoph Hellwig break; 133088455ec4SChristoph Hellwig case RECEIVE_DIAGNOSTIC: 133188455ec4SChristoph Hellwig case SEND_DIAGNOSTIC: 133288455ec4SChristoph Hellwig *size = (cdb[3] << 8) | cdb[4]; 133388455ec4SChristoph Hellwig break; 133488455ec4SChristoph Hellwig case WRITE_BUFFER: 133588455ec4SChristoph Hellwig *size = (cdb[6] << 16) + (cdb[7] << 8) + cdb[8]; 133688455ec4SChristoph Hellwig break; 133788455ec4SChristoph Hellwig case REPORT_LUNS: 1338d1b1f805SChristoph Hellwig cmd->execute_cmd = spc_emulate_report_luns; 133988455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 134088455ec4SChristoph Hellwig /* 1341125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for REPORT_LUNS 134288455ec4SChristoph Hellwig * See spc4r17 section 5.3 134388455ec4SChristoph Hellwig */ 134468d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 134588455ec4SChristoph Hellwig break; 134688455ec4SChristoph Hellwig case TEST_UNIT_READY: 13471fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_testunitready; 1348d6e0175cSChristoph Hellwig *size = 0; 134988455ec4SChristoph Hellwig break; 1350eba2ca45SNicholas Bellinger case MAINTENANCE_IN: 1351eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1352eba2ca45SNicholas Bellinger /* 1353eba2ca45SNicholas Bellinger * MAINTENANCE_IN from SCC-2 1354eba2ca45SNicholas Bellinger * Check for emulated MI_REPORT_TARGET_PGS 1355eba2ca45SNicholas Bellinger */ 1356c87fbd56SChristoph Hellwig if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS) { 1357eba2ca45SNicholas Bellinger cmd->execute_cmd = 1358eba2ca45SNicholas Bellinger target_emulate_report_target_port_groups; 1359eba2ca45SNicholas Bellinger } 1360eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1361eba2ca45SNicholas Bellinger } else { 1362eba2ca45SNicholas Bellinger /* 1363eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1364eba2ca45SNicholas Bellinger */ 1365eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1366eba2ca45SNicholas Bellinger } 1367eba2ca45SNicholas Bellinger break; 1368eba2ca45SNicholas Bellinger case MAINTENANCE_OUT: 1369eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1370eba2ca45SNicholas Bellinger /* 1371eba2ca45SNicholas Bellinger * MAINTENANCE_OUT from SCC-2 1372eba2ca45SNicholas Bellinger * Check for emulated MO_SET_TARGET_PGS. 1373eba2ca45SNicholas Bellinger */ 1374c87fbd56SChristoph Hellwig if (cdb[1] == MO_SET_TARGET_PGS) { 1375eba2ca45SNicholas Bellinger cmd->execute_cmd = 1376eba2ca45SNicholas Bellinger target_emulate_set_target_port_groups; 1377eba2ca45SNicholas Bellinger } 1378eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1379eba2ca45SNicholas Bellinger } else { 1380eba2ca45SNicholas Bellinger /* 1381eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1382eba2ca45SNicholas Bellinger */ 1383eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1384eba2ca45SNicholas Bellinger } 1385eba2ca45SNicholas Bellinger break; 138688455ec4SChristoph Hellwig default: 138788455ec4SChristoph Hellwig pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode" 138888455ec4SChristoph Hellwig " 0x%02x, sending CHECK_CONDITION.\n", 138988455ec4SChristoph Hellwig cmd->se_tfo->get_fabric_name(), cdb[0]); 1390de103c93SChristoph Hellwig return TCM_UNSUPPORTED_SCSI_OPCODE; 139188455ec4SChristoph Hellwig } 139288455ec4SChristoph Hellwig 139388455ec4SChristoph Hellwig return 0; 139488455ec4SChristoph Hellwig } 139588455ec4SChristoph Hellwig EXPORT_SYMBOL(spc_parse_cdb); 1396