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; 741fd032eeSChristoph Hellwig 751fd032eeSChristoph Hellwig /* Set RMB (removable media) for tape devices */ 761fd032eeSChristoph Hellwig if (dev->transport->get_device_type(dev) == TYPE_TAPE) 771fd032eeSChristoph Hellwig buf[1] = 0x80; 781fd032eeSChristoph Hellwig 7948c2567dSChristoph Hellwig buf[2] = 0x05; /* SPC-3 */ 801fd032eeSChristoph Hellwig 811fd032eeSChristoph Hellwig /* 821fd032eeSChristoph Hellwig * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 831fd032eeSChristoph Hellwig * 841fd032eeSChristoph Hellwig * SPC4 says: 851fd032eeSChristoph Hellwig * A RESPONSE DATA FORMAT field set to 2h indicates that the 861fd032eeSChristoph Hellwig * standard INQUIRY data is in the format defined in this 871fd032eeSChristoph Hellwig * standard. Response data format values less than 2h are 881fd032eeSChristoph Hellwig * obsolete. Response data format values greater than 2h are 891fd032eeSChristoph Hellwig * reserved. 901fd032eeSChristoph Hellwig */ 911fd032eeSChristoph Hellwig buf[3] = 2; 921fd032eeSChristoph Hellwig 931fd032eeSChristoph Hellwig /* 941fd032eeSChristoph Hellwig * Enable SCCS and TPGS fields for Emulated ALUA 951fd032eeSChristoph Hellwig */ 961fd032eeSChristoph Hellwig spc_fill_alua_data(lun->lun_sep, buf); 971fd032eeSChristoph Hellwig 98d397a445SNicholas Bellinger /* 99d397a445SNicholas Bellinger * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY 100d397a445SNicholas Bellinger */ 101d397a445SNicholas Bellinger if (dev->dev_attrib.emulate_3pc) 102d397a445SNicholas Bellinger buf[5] |= 0x8; 103d397a445SNicholas Bellinger 1041fd032eeSChristoph Hellwig buf[7] = 0x2; /* CmdQue=1 */ 1051fd032eeSChristoph Hellwig 106ee60bddbSNicholas Bellinger memcpy(&buf[8], "LIO-ORG ", 8); 107ee60bddbSNicholas Bellinger memset(&buf[16], 0x20, 16); 108ee60bddbSNicholas Bellinger memcpy(&buf[16], dev->t10_wwn.model, 109ee60bddbSNicholas Bellinger min_t(size_t, strlen(dev->t10_wwn.model), 16)); 110ee60bddbSNicholas Bellinger memcpy(&buf[32], dev->t10_wwn.revision, 111ee60bddbSNicholas Bellinger min_t(size_t, strlen(dev->t10_wwn.revision), 4)); 1121fd032eeSChristoph Hellwig buf[4] = 31; /* Set additional length to 31 */ 1131fd032eeSChristoph Hellwig 1141fd032eeSChristoph Hellwig return 0; 1151fd032eeSChristoph Hellwig } 1160dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_inquiry_std); 1171fd032eeSChristoph Hellwig 1181fd032eeSChristoph Hellwig /* unit serial number */ 119de103c93SChristoph Hellwig static sense_reason_t 120de103c93SChristoph Hellwig spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 1211fd032eeSChristoph Hellwig { 1221fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1231fd032eeSChristoph Hellwig u16 len = 0; 1241fd032eeSChristoph Hellwig 1250fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 1261fd032eeSChristoph Hellwig u32 unit_serial_len; 1271fd032eeSChristoph Hellwig 1280fd97ccfSChristoph Hellwig unit_serial_len = strlen(dev->t10_wwn.unit_serial); 1291fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 1301fd032eeSChristoph Hellwig 1310fd97ccfSChristoph Hellwig 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_port *port = NULL; 1791fd032eeSChristoph Hellwig struct se_portal_group *tpg = NULL; 1801fd032eeSChristoph Hellwig struct t10_alua_lu_gp_member *lu_gp_mem; 1811fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 1821fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 1830fd97ccfSChristoph Hellwig unsigned char *prod = &dev->t10_wwn.model[0]; 1841fd032eeSChristoph Hellwig u32 prod_len; 1851fd032eeSChristoph Hellwig u32 unit_serial_len, off = 0; 1861fd032eeSChristoph Hellwig u16 len = 0, id_len; 1871fd032eeSChristoph Hellwig 1881fd032eeSChristoph Hellwig off = 4; 1891fd032eeSChristoph Hellwig 1901fd032eeSChristoph Hellwig /* 1911fd032eeSChristoph Hellwig * NAA IEEE Registered Extended Assigned designator format, see 1921fd032eeSChristoph Hellwig * spc4r17 section 7.7.3.6.5 1931fd032eeSChristoph Hellwig * 1941fd032eeSChristoph Hellwig * We depend upon a target_core_mod/ConfigFS provided 1951fd032eeSChristoph Hellwig * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 1961fd032eeSChristoph Hellwig * value in order to return the NAA id. 1971fd032eeSChristoph Hellwig */ 1980fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL)) 1991fd032eeSChristoph Hellwig goto check_t10_vend_desc; 2001fd032eeSChristoph Hellwig 2011fd032eeSChristoph Hellwig /* CODE SET == Binary */ 2021fd032eeSChristoph Hellwig buf[off++] = 0x1; 2031fd032eeSChristoph Hellwig 2041fd032eeSChristoph Hellwig /* Set ASSOCIATION == addressed logical unit: 0)b */ 2051fd032eeSChristoph Hellwig buf[off] = 0x00; 2061fd032eeSChristoph Hellwig 2071fd032eeSChristoph Hellwig /* Identifier/Designator type == NAA identifier */ 2081fd032eeSChristoph Hellwig buf[off++] |= 0x3; 2091fd032eeSChristoph Hellwig off++; 2101fd032eeSChristoph Hellwig 2111fd032eeSChristoph Hellwig /* Identifier/Designator length */ 2121fd032eeSChristoph Hellwig buf[off++] = 0x10; 2131fd032eeSChristoph Hellwig 2141fd032eeSChristoph Hellwig /* 2151fd032eeSChristoph Hellwig * Start NAA IEEE Registered Extended Identifier/Designator 2161fd032eeSChristoph Hellwig */ 2171fd032eeSChristoph Hellwig buf[off++] = (0x6 << 4); 2181fd032eeSChristoph Hellwig 2191fd032eeSChristoph Hellwig /* 2201fd032eeSChristoph Hellwig * Use OpenFabrics IEEE Company ID: 00 14 05 2211fd032eeSChristoph Hellwig */ 2221fd032eeSChristoph Hellwig buf[off++] = 0x01; 2231fd032eeSChristoph Hellwig buf[off++] = 0x40; 2241fd032eeSChristoph Hellwig buf[off] = (0x5 << 4); 2251fd032eeSChristoph Hellwig 2261fd032eeSChristoph Hellwig /* 2271fd032eeSChristoph Hellwig * Return ConfigFS Unit Serial Number information for 2281fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER and 2291fd032eeSChristoph Hellwig * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION 2301fd032eeSChristoph Hellwig */ 2311fd032eeSChristoph Hellwig spc_parse_naa_6h_vendor_specific(dev, &buf[off]); 2321fd032eeSChristoph Hellwig 2331fd032eeSChristoph Hellwig len = 20; 2341fd032eeSChristoph Hellwig off = (len + 4); 2351fd032eeSChristoph Hellwig 2361fd032eeSChristoph Hellwig check_t10_vend_desc: 2371fd032eeSChristoph Hellwig /* 2381fd032eeSChristoph Hellwig * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 2391fd032eeSChristoph Hellwig */ 2401fd032eeSChristoph Hellwig id_len = 8; /* For Vendor field */ 2411fd032eeSChristoph Hellwig prod_len = 4; /* For VPD Header */ 2421fd032eeSChristoph Hellwig prod_len += 8; /* For Vendor field */ 2431fd032eeSChristoph Hellwig prod_len += strlen(prod); 2441fd032eeSChristoph Hellwig prod_len++; /* For : */ 2451fd032eeSChristoph Hellwig 2460fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 2470fd97ccfSChristoph Hellwig unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]); 2481fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 2491fd032eeSChristoph Hellwig 2501fd032eeSChristoph Hellwig id_len += sprintf(&buf[off+12], "%s:%s", prod, 2510fd97ccfSChristoph Hellwig &dev->t10_wwn.unit_serial[0]); 2521fd032eeSChristoph Hellwig } 2531fd032eeSChristoph Hellwig buf[off] = 0x2; /* ASCII */ 2541fd032eeSChristoph Hellwig buf[off+1] = 0x1; /* T10 Vendor ID */ 2551fd032eeSChristoph Hellwig buf[off+2] = 0x0; 2561fd032eeSChristoph Hellwig memcpy(&buf[off+4], "LIO-ORG", 8); 2571fd032eeSChristoph Hellwig /* Extra Byte for NULL Terminator */ 2581fd032eeSChristoph Hellwig id_len++; 2591fd032eeSChristoph Hellwig /* Identifier Length */ 2601fd032eeSChristoph Hellwig buf[off+3] = id_len; 2611fd032eeSChristoph Hellwig /* Header size for Designation descriptor */ 2621fd032eeSChristoph Hellwig len += (id_len + 4); 2631fd032eeSChristoph Hellwig off += (id_len + 4); 2641fd032eeSChristoph Hellwig /* 2651fd032eeSChristoph Hellwig * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD 2661fd032eeSChristoph Hellwig */ 2671fd032eeSChristoph Hellwig port = lun->lun_sep; 2681fd032eeSChristoph Hellwig if (port) { 2691fd032eeSChristoph Hellwig struct t10_alua_lu_gp *lu_gp; 270fbfe858fSHannes Reinecke u32 padding, scsi_name_len, scsi_target_len; 2711fd032eeSChristoph Hellwig u16 lu_gp_id = 0; 2721fd032eeSChristoph Hellwig u16 tg_pt_gp_id = 0; 2731fd032eeSChristoph Hellwig u16 tpgt; 2741fd032eeSChristoph Hellwig 2751fd032eeSChristoph Hellwig tpg = port->sep_tpg; 2761fd032eeSChristoph Hellwig /* 2771fd032eeSChristoph Hellwig * Relative target port identifer, see spc4r17 2781fd032eeSChristoph Hellwig * section 7.7.3.7 2791fd032eeSChristoph Hellwig * 2801fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2811fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2821fd032eeSChristoph Hellwig */ 2831fd032eeSChristoph Hellwig buf[off] = 2841fd032eeSChristoph Hellwig (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 2851fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 2861fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 2871fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 2881fd032eeSChristoph Hellwig buf[off] |= 0x10; 2891fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Relative target port identifer */ 2901fd032eeSChristoph Hellwig buf[off++] |= 0x4; 2911fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 2921fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 2931fd032eeSChristoph Hellwig /* Skip over Obsolete field in RTPI payload 2941fd032eeSChristoph Hellwig * in Table 472 */ 2951fd032eeSChristoph Hellwig off += 2; 2961fd032eeSChristoph Hellwig buf[off++] = ((port->sep_rtpi >> 8) & 0xff); 2971fd032eeSChristoph Hellwig buf[off++] = (port->sep_rtpi & 0xff); 2981fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 2991fd032eeSChristoph Hellwig /* 3001fd032eeSChristoph Hellwig * Target port group identifier, see spc4r17 3011fd032eeSChristoph Hellwig * section 7.7.3.8 3021fd032eeSChristoph Hellwig * 3031fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3041fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3051fd032eeSChristoph Hellwig */ 3061fd032eeSChristoph Hellwig tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; 3071fd032eeSChristoph Hellwig if (!tg_pt_gp_mem) 3081fd032eeSChristoph Hellwig goto check_lu_gp; 3091fd032eeSChristoph Hellwig 3101fd032eeSChristoph Hellwig spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3111fd032eeSChristoph Hellwig tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; 3121fd032eeSChristoph Hellwig if (!tg_pt_gp) { 3131fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3141fd032eeSChristoph Hellwig goto check_lu_gp; 3151fd032eeSChristoph Hellwig } 3161fd032eeSChristoph Hellwig tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 3171fd032eeSChristoph Hellwig spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 3181fd032eeSChristoph Hellwig 3191fd032eeSChristoph Hellwig buf[off] = 3201fd032eeSChristoph Hellwig (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 3211fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3221fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3231fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3241fd032eeSChristoph Hellwig buf[off] |= 0x10; 3251fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Target port group identifier */ 3261fd032eeSChristoph Hellwig buf[off++] |= 0x5; 3271fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3281fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3291fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3301fd032eeSChristoph Hellwig buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); 3311fd032eeSChristoph Hellwig buf[off++] = (tg_pt_gp_id & 0xff); 3321fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3331fd032eeSChristoph Hellwig /* 3341fd032eeSChristoph Hellwig * Logical Unit Group identifier, see spc4r17 3351fd032eeSChristoph Hellwig * section 7.7.3.8 3361fd032eeSChristoph Hellwig */ 3371fd032eeSChristoph Hellwig check_lu_gp: 3381fd032eeSChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 3391fd032eeSChristoph Hellwig if (!lu_gp_mem) 3401fd032eeSChristoph Hellwig goto check_scsi_name; 3411fd032eeSChristoph Hellwig 3421fd032eeSChristoph Hellwig spin_lock(&lu_gp_mem->lu_gp_mem_lock); 3431fd032eeSChristoph Hellwig lu_gp = lu_gp_mem->lu_gp; 3441fd032eeSChristoph Hellwig if (!lu_gp) { 3451fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3461fd032eeSChristoph Hellwig goto check_scsi_name; 3471fd032eeSChristoph Hellwig } 3481fd032eeSChristoph Hellwig lu_gp_id = lu_gp->lu_gp_id; 3491fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3501fd032eeSChristoph Hellwig 3511fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3521fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Logical Unit Group identifier */ 3531fd032eeSChristoph Hellwig buf[off++] |= 0x6; 3541fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3551fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3561fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 3571fd032eeSChristoph Hellwig buf[off++] = ((lu_gp_id >> 8) & 0xff); 3581fd032eeSChristoph Hellwig buf[off++] = (lu_gp_id & 0xff); 3591fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3601fd032eeSChristoph Hellwig /* 3611fd032eeSChristoph Hellwig * SCSI name string designator, see spc4r17 3621fd032eeSChristoph Hellwig * section 7.7.3.11 3631fd032eeSChristoph Hellwig * 3641fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3651fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3661fd032eeSChristoph Hellwig */ 3671fd032eeSChristoph Hellwig check_scsi_name: 3681fd032eeSChristoph Hellwig buf[off] = 3691fd032eeSChristoph Hellwig (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 3701fd032eeSChristoph Hellwig buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 3711fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3721fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3731fd032eeSChristoph Hellwig buf[off] |= 0x10; 3741fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == SCSI name string */ 3751fd032eeSChristoph Hellwig buf[off++] |= 0x8; 3761fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved and length */ 3771fd032eeSChristoph Hellwig /* 3781fd032eeSChristoph Hellwig * SCSI name string identifer containing, $FABRIC_MOD 3791fd032eeSChristoph Hellwig * dependent information. For LIO-Target and iSCSI 3801fd032eeSChristoph Hellwig * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 3811fd032eeSChristoph Hellwig * UTF-8 encoding. 3821fd032eeSChristoph Hellwig */ 3831fd032eeSChristoph Hellwig tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 3841fd032eeSChristoph Hellwig scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 3851fd032eeSChristoph Hellwig tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 3861fd032eeSChristoph Hellwig scsi_name_len += 1 /* Include NULL terminator */; 3871fd032eeSChristoph Hellwig /* 3881fd032eeSChristoph Hellwig * The null-terminated, null-padded (see 4.4.2) SCSI 3891fd032eeSChristoph Hellwig * NAME STRING field contains a UTF-8 format string. 3901fd032eeSChristoph Hellwig * The number of bytes in the SCSI NAME STRING field 3911fd032eeSChristoph Hellwig * (i.e., the value in the DESIGNATOR LENGTH field) 3921fd032eeSChristoph Hellwig * shall be no larger than 256 and shall be a multiple 3931fd032eeSChristoph Hellwig * of four. 3941fd032eeSChristoph Hellwig */ 39503ba84caSHannes Reinecke padding = ((-scsi_name_len) & 3); 3961fd032eeSChristoph Hellwig if (padding) 3971fd032eeSChristoph Hellwig scsi_name_len += padding; 39803ba84caSHannes Reinecke if (scsi_name_len > 256) 39903ba84caSHannes Reinecke scsi_name_len = 256; 4001fd032eeSChristoph Hellwig 4011fd032eeSChristoph Hellwig buf[off-1] = scsi_name_len; 4021fd032eeSChristoph Hellwig off += scsi_name_len; 4031fd032eeSChristoph Hellwig /* Header size + Designation descriptor */ 4041fd032eeSChristoph Hellwig len += (scsi_name_len + 4); 405fbfe858fSHannes Reinecke 406fbfe858fSHannes Reinecke /* 407fbfe858fSHannes Reinecke * Target device designator 408fbfe858fSHannes Reinecke */ 409fbfe858fSHannes Reinecke buf[off] = 410fbfe858fSHannes Reinecke (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); 411fbfe858fSHannes Reinecke buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 412fbfe858fSHannes Reinecke buf[off] = 0x80; /* Set PIV=1 */ 413fbfe858fSHannes Reinecke /* Set ASSOCIATION == target device: 10b */ 414fbfe858fSHannes Reinecke buf[off] |= 0x20; 415fbfe858fSHannes Reinecke /* DESIGNATOR TYPE == SCSI name string */ 416fbfe858fSHannes Reinecke buf[off++] |= 0x8; 417fbfe858fSHannes Reinecke off += 2; /* Skip over Reserved and length */ 418fbfe858fSHannes Reinecke /* 419fbfe858fSHannes Reinecke * SCSI name string identifer containing, $FABRIC_MOD 420fbfe858fSHannes Reinecke * dependent information. For LIO-Target and iSCSI 421fbfe858fSHannes Reinecke * Target Port, this means "<iSCSI name>" in 422fbfe858fSHannes Reinecke * UTF-8 encoding. 423fbfe858fSHannes Reinecke */ 424fbfe858fSHannes Reinecke scsi_target_len = sprintf(&buf[off], "%s", 425fbfe858fSHannes Reinecke tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 426fbfe858fSHannes Reinecke scsi_target_len += 1 /* Include NULL terminator */; 427fbfe858fSHannes Reinecke /* 428fbfe858fSHannes Reinecke * The null-terminated, null-padded (see 4.4.2) SCSI 429fbfe858fSHannes Reinecke * NAME STRING field contains a UTF-8 format string. 430fbfe858fSHannes Reinecke * The number of bytes in the SCSI NAME STRING field 431fbfe858fSHannes Reinecke * (i.e., the value in the DESIGNATOR LENGTH field) 432fbfe858fSHannes Reinecke * shall be no larger than 256 and shall be a multiple 433fbfe858fSHannes Reinecke * of four. 434fbfe858fSHannes Reinecke */ 435fbfe858fSHannes Reinecke padding = ((-scsi_target_len) & 3); 436fbfe858fSHannes Reinecke if (padding) 437fbfe858fSHannes Reinecke scsi_target_len += padding; 438fbfe858fSHannes Reinecke if (scsi_name_len > 256) 439fbfe858fSHannes Reinecke scsi_name_len = 256; 440fbfe858fSHannes Reinecke 441fbfe858fSHannes Reinecke buf[off-1] = scsi_target_len; 442fbfe858fSHannes Reinecke off += scsi_target_len; 443fbfe858fSHannes Reinecke 444fbfe858fSHannes Reinecke /* Header size + Designation descriptor */ 445fbfe858fSHannes Reinecke len += (scsi_target_len + 4); 4461fd032eeSChristoph Hellwig } 4471fd032eeSChristoph Hellwig buf[2] = ((len >> 8) & 0xff); 4481fd032eeSChristoph Hellwig buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ 4491fd032eeSChristoph Hellwig return 0; 4501fd032eeSChristoph Hellwig } 4510dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_evpd_83); 4521fd032eeSChristoph Hellwig 453d0c8b259SNicholas Bellinger static bool 454d0c8b259SNicholas Bellinger spc_check_dev_wce(struct se_device *dev) 455d0c8b259SNicholas Bellinger { 456d0c8b259SNicholas Bellinger bool wce = false; 457d0c8b259SNicholas Bellinger 458d0c8b259SNicholas Bellinger if (dev->transport->get_write_cache) 459d0c8b259SNicholas Bellinger wce = dev->transport->get_write_cache(dev); 460d0c8b259SNicholas Bellinger else if (dev->dev_attrib.emulate_write_cache > 0) 461d0c8b259SNicholas Bellinger wce = true; 462d0c8b259SNicholas Bellinger 463d0c8b259SNicholas Bellinger return wce; 464d0c8b259SNicholas Bellinger } 465d0c8b259SNicholas Bellinger 4661fd032eeSChristoph Hellwig /* Extended INQUIRY Data VPD Page */ 467de103c93SChristoph Hellwig static sense_reason_t 468de103c93SChristoph Hellwig spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 4691fd032eeSChristoph Hellwig { 470d0c8b259SNicholas Bellinger struct se_device *dev = cmd->se_dev; 471d0c8b259SNicholas Bellinger 4721fd032eeSChristoph Hellwig buf[3] = 0x3c; 4731fd032eeSChristoph Hellwig /* Set HEADSUP, ORDSUP, SIMPSUP */ 4741fd032eeSChristoph Hellwig buf[5] = 0x07; 4751fd032eeSChristoph Hellwig 4761fd032eeSChristoph Hellwig /* If WriteCache emulation is enabled, set V_SUP */ 477d0c8b259SNicholas Bellinger if (spc_check_dev_wce(dev)) 4781fd032eeSChristoph Hellwig buf[6] = 0x01; 4791fd032eeSChristoph Hellwig return 0; 4801fd032eeSChristoph Hellwig } 4811fd032eeSChristoph Hellwig 4821fd032eeSChristoph Hellwig /* Block Limits VPD page */ 483de103c93SChristoph Hellwig static sense_reason_t 484de103c93SChristoph Hellwig spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 4851fd032eeSChristoph Hellwig { 4861fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 4871fd032eeSChristoph Hellwig u32 max_sectors; 4881fd032eeSChristoph Hellwig int have_tp = 0; 4897f7caf6aSAndy Grover int opt, min; 4901fd032eeSChristoph Hellwig 4911fd032eeSChristoph Hellwig /* 4921fd032eeSChristoph Hellwig * Following spc3r22 section 6.5.3 Block Limits VPD page, when 4931fd032eeSChristoph Hellwig * emulate_tpu=1 or emulate_tpws=1 we will be expect a 4941fd032eeSChristoph Hellwig * different page length for Thin Provisioning. 4951fd032eeSChristoph Hellwig */ 4960fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws) 4971fd032eeSChristoph Hellwig have_tp = 1; 4981fd032eeSChristoph Hellwig 4991fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5001fd032eeSChristoph Hellwig buf[3] = have_tp ? 0x3c : 0x10; 5011fd032eeSChristoph Hellwig 5021fd032eeSChristoph Hellwig /* Set WSNZ to 1 */ 5031fd032eeSChristoph Hellwig buf[4] = 0x01; 5040123a9ecSNicholas Bellinger /* 5050123a9ecSNicholas Bellinger * Set MAXIMUM COMPARE AND WRITE LENGTH 5060123a9ecSNicholas Bellinger */ 5070123a9ecSNicholas Bellinger if (dev->dev_attrib.emulate_caw) 5080123a9ecSNicholas Bellinger buf[5] = 0x01; 5091fd032eeSChristoph Hellwig 5101fd032eeSChristoph Hellwig /* 5111fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH GRANULARITY 5121fd032eeSChristoph Hellwig */ 5137f7caf6aSAndy Grover if (dev->transport->get_io_min && (min = dev->transport->get_io_min(dev))) 5147f7caf6aSAndy Grover put_unaligned_be16(min / dev->dev_attrib.block_size, &buf[6]); 5157f7caf6aSAndy Grover else 5161fd032eeSChristoph Hellwig put_unaligned_be16(1, &buf[6]); 5171fd032eeSChristoph Hellwig 5181fd032eeSChristoph Hellwig /* 5191fd032eeSChristoph Hellwig * Set MAXIMUM TRANSFER LENGTH 5201fd032eeSChristoph Hellwig */ 5210fd97ccfSChristoph Hellwig max_sectors = min(dev->dev_attrib.fabric_max_sectors, 5220fd97ccfSChristoph Hellwig dev->dev_attrib.hw_max_sectors); 5231fd032eeSChristoph Hellwig put_unaligned_be32(max_sectors, &buf[8]); 5241fd032eeSChristoph Hellwig 5251fd032eeSChristoph Hellwig /* 5261fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH 5271fd032eeSChristoph Hellwig */ 5287f7caf6aSAndy Grover if (dev->transport->get_io_opt && (opt = dev->transport->get_io_opt(dev))) 5297f7caf6aSAndy Grover put_unaligned_be32(opt / dev->dev_attrib.block_size, &buf[12]); 5307f7caf6aSAndy Grover else 5310fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]); 5321fd032eeSChristoph Hellwig 5331fd032eeSChristoph Hellwig /* 5341fd032eeSChristoph Hellwig * Exit now if we don't support TP. 5351fd032eeSChristoph Hellwig */ 5361fd032eeSChristoph Hellwig if (!have_tp) 537773cbaf7SNicholas Bellinger goto max_write_same; 5381fd032eeSChristoph Hellwig 5391fd032eeSChristoph Hellwig /* 5401fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP LBA COUNT 5411fd032eeSChristoph Hellwig */ 5420fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_lba_count, &buf[20]); 5431fd032eeSChristoph Hellwig 5441fd032eeSChristoph Hellwig /* 5451fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 5461fd032eeSChristoph Hellwig */ 5470fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_block_desc_count, 5481fd032eeSChristoph Hellwig &buf[24]); 5491fd032eeSChristoph Hellwig 5501fd032eeSChristoph Hellwig /* 5511fd032eeSChristoph Hellwig * Set OPTIMAL UNMAP GRANULARITY 5521fd032eeSChristoph Hellwig */ 5530fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity, &buf[28]); 5541fd032eeSChristoph Hellwig 5551fd032eeSChristoph Hellwig /* 5561fd032eeSChristoph Hellwig * UNMAP GRANULARITY ALIGNMENT 5571fd032eeSChristoph Hellwig */ 5580fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity_alignment, 5591fd032eeSChristoph Hellwig &buf[32]); 5600fd97ccfSChristoph Hellwig if (dev->dev_attrib.unmap_granularity_alignment != 0) 5611fd032eeSChristoph Hellwig buf[32] |= 0x80; /* Set the UGAVALID bit */ 5621fd032eeSChristoph Hellwig 563773cbaf7SNicholas Bellinger /* 564773cbaf7SNicholas Bellinger * MAXIMUM WRITE SAME LENGTH 565773cbaf7SNicholas Bellinger */ 566773cbaf7SNicholas Bellinger max_write_same: 567773cbaf7SNicholas Bellinger put_unaligned_be64(dev->dev_attrib.max_write_same_len, &buf[36]); 568773cbaf7SNicholas Bellinger 5691fd032eeSChristoph Hellwig return 0; 5701fd032eeSChristoph Hellwig } 5711fd032eeSChristoph Hellwig 5721fd032eeSChristoph Hellwig /* Block Device Characteristics VPD page */ 573de103c93SChristoph Hellwig static sense_reason_t 574de103c93SChristoph Hellwig spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 5751fd032eeSChristoph Hellwig { 5761fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5771fd032eeSChristoph Hellwig 5781fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5791fd032eeSChristoph Hellwig buf[3] = 0x3c; 5800fd97ccfSChristoph Hellwig buf[5] = dev->dev_attrib.is_nonrot ? 1 : 0; 5811fd032eeSChristoph Hellwig 5821fd032eeSChristoph Hellwig return 0; 5831fd032eeSChristoph Hellwig } 5841fd032eeSChristoph Hellwig 5851fd032eeSChristoph Hellwig /* Thin Provisioning VPD */ 586de103c93SChristoph Hellwig static sense_reason_t 587de103c93SChristoph Hellwig spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 5881fd032eeSChristoph Hellwig { 5891fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5901fd032eeSChristoph Hellwig 5911fd032eeSChristoph Hellwig /* 5921fd032eeSChristoph Hellwig * From spc3r22 section 6.5.4 Thin Provisioning VPD page: 5931fd032eeSChristoph Hellwig * 5941fd032eeSChristoph Hellwig * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 5951fd032eeSChristoph Hellwig * zero, then the page length shall be set to 0004h. If the DP bit 5961fd032eeSChristoph Hellwig * is set to one, then the page length shall be set to the value 5971fd032eeSChristoph Hellwig * defined in table 162. 5981fd032eeSChristoph Hellwig */ 5991fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 6001fd032eeSChristoph Hellwig 6011fd032eeSChristoph Hellwig /* 6021fd032eeSChristoph Hellwig * Set Hardcoded length mentioned above for DP=0 6031fd032eeSChristoph Hellwig */ 6041fd032eeSChristoph Hellwig put_unaligned_be16(0x0004, &buf[2]); 6051fd032eeSChristoph Hellwig 6061fd032eeSChristoph Hellwig /* 6071fd032eeSChristoph Hellwig * The THRESHOLD EXPONENT field indicates the threshold set size in 6081fd032eeSChristoph Hellwig * LBAs as a power of 2 (i.e., the threshold set size is equal to 6091fd032eeSChristoph Hellwig * 2(threshold exponent)). 6101fd032eeSChristoph Hellwig * 6111fd032eeSChristoph Hellwig * Note that this is currently set to 0x00 as mkp says it will be 6121fd032eeSChristoph Hellwig * changing again. We can enable this once it has settled in T10 6131fd032eeSChristoph Hellwig * and is actually used by Linux/SCSI ML code. 6141fd032eeSChristoph Hellwig */ 6151fd032eeSChristoph Hellwig buf[4] = 0x00; 6161fd032eeSChristoph Hellwig 6171fd032eeSChristoph Hellwig /* 6181fd032eeSChristoph Hellwig * A TPU bit set to one indicates that the device server supports 6191fd032eeSChristoph Hellwig * the UNMAP command (see 5.25). A TPU bit set to zero indicates 6201fd032eeSChristoph Hellwig * that the device server does not support the UNMAP command. 6211fd032eeSChristoph Hellwig */ 6220fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu != 0) 6231fd032eeSChristoph Hellwig buf[5] = 0x80; 6241fd032eeSChristoph Hellwig 6251fd032eeSChristoph Hellwig /* 6261fd032eeSChristoph Hellwig * A TPWS bit set to one indicates that the device server supports 6271fd032eeSChristoph Hellwig * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 6281fd032eeSChristoph Hellwig * A TPWS bit set to zero indicates that the device server does not 6291fd032eeSChristoph Hellwig * support the use of the WRITE SAME (16) command to unmap LBAs. 6301fd032eeSChristoph Hellwig */ 6310fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpws != 0) 6321fd032eeSChristoph Hellwig buf[5] |= 0x40; 6331fd032eeSChristoph Hellwig 6341fd032eeSChristoph Hellwig return 0; 6351fd032eeSChristoph Hellwig } 6361fd032eeSChristoph Hellwig 637de103c93SChristoph Hellwig static sense_reason_t 638de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 6391fd032eeSChristoph Hellwig 6401fd032eeSChristoph Hellwig static struct { 6411fd032eeSChristoph Hellwig uint8_t page; 642de103c93SChristoph Hellwig sense_reason_t (*emulate)(struct se_cmd *, unsigned char *); 6431fd032eeSChristoph Hellwig } evpd_handlers[] = { 6441fd032eeSChristoph Hellwig { .page = 0x00, .emulate = spc_emulate_evpd_00 }, 6451fd032eeSChristoph Hellwig { .page = 0x80, .emulate = spc_emulate_evpd_80 }, 6461fd032eeSChristoph Hellwig { .page = 0x83, .emulate = spc_emulate_evpd_83 }, 6471fd032eeSChristoph Hellwig { .page = 0x86, .emulate = spc_emulate_evpd_86 }, 6481fd032eeSChristoph Hellwig { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, 6491fd032eeSChristoph Hellwig { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, 6501fd032eeSChristoph Hellwig { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, 6511fd032eeSChristoph Hellwig }; 6521fd032eeSChristoph Hellwig 6531fd032eeSChristoph Hellwig /* supported vital product data pages */ 654de103c93SChristoph Hellwig static sense_reason_t 655de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 6561fd032eeSChristoph Hellwig { 6571fd032eeSChristoph Hellwig int p; 6581fd032eeSChristoph Hellwig 6591fd032eeSChristoph Hellwig /* 6601fd032eeSChristoph Hellwig * Only report the INQUIRY EVPD=1 pages after a valid NAA 6611fd032eeSChristoph Hellwig * Registered Extended LUN WWN has been set via ConfigFS 6621fd032eeSChristoph Hellwig * during device creation/restart. 6631fd032eeSChristoph Hellwig */ 6640fd97ccfSChristoph Hellwig if (cmd->se_dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 6651fd032eeSChristoph Hellwig buf[3] = ARRAY_SIZE(evpd_handlers); 6661fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) 6671fd032eeSChristoph Hellwig buf[p + 4] = evpd_handlers[p].page; 6681fd032eeSChristoph Hellwig } 6691fd032eeSChristoph Hellwig 6701fd032eeSChristoph Hellwig return 0; 6711fd032eeSChristoph Hellwig } 6721fd032eeSChristoph Hellwig 673de103c93SChristoph Hellwig static sense_reason_t 674de103c93SChristoph Hellwig spc_emulate_inquiry(struct se_cmd *cmd) 6751fd032eeSChristoph Hellwig { 6761fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 6771fd032eeSChristoph Hellwig struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg; 678ffe7b0e9SPaolo Bonzini unsigned char *rbuf; 6791fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 680ffe7b0e9SPaolo Bonzini unsigned char buf[SE_INQUIRY_BUF]; 681de103c93SChristoph Hellwig sense_reason_t ret; 682de103c93SChristoph Hellwig int p; 6831fd032eeSChristoph Hellwig 684dea5f099SNicholas Bellinger memset(buf, 0, SE_INQUIRY_BUF); 685dea5f099SNicholas Bellinger 6861fd032eeSChristoph Hellwig if (dev == tpg->tpg_virt_lun0.lun_se_dev) 6871fd032eeSChristoph Hellwig buf[0] = 0x3f; /* Not connected */ 6881fd032eeSChristoph Hellwig else 6891fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 6901fd032eeSChristoph Hellwig 6911fd032eeSChristoph Hellwig if (!(cdb[1] & 0x1)) { 6921fd032eeSChristoph Hellwig if (cdb[2]) { 6931fd032eeSChristoph Hellwig pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", 6941fd032eeSChristoph Hellwig cdb[2]); 695de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 6961fd032eeSChristoph Hellwig goto out; 6971fd032eeSChristoph Hellwig } 6981fd032eeSChristoph Hellwig 6991fd032eeSChristoph Hellwig ret = spc_emulate_inquiry_std(cmd, buf); 7001fd032eeSChristoph Hellwig goto out; 7011fd032eeSChristoph Hellwig } 7021fd032eeSChristoph Hellwig 7031fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 7041fd032eeSChristoph Hellwig if (cdb[2] == evpd_handlers[p].page) { 7051fd032eeSChristoph Hellwig buf[1] = cdb[2]; 7061fd032eeSChristoph Hellwig ret = evpd_handlers[p].emulate(cmd, buf); 7071fd032eeSChristoph Hellwig goto out; 7081fd032eeSChristoph Hellwig } 7091fd032eeSChristoph Hellwig } 7101fd032eeSChristoph Hellwig 7111fd032eeSChristoph Hellwig pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 712de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7131fd032eeSChristoph Hellwig 7141fd032eeSChristoph Hellwig out: 715ffe7b0e9SPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 71649df9fc9SNicholas Bellinger if (rbuf) { 717ffe7b0e9SPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 7181fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 71949df9fc9SNicholas Bellinger } 7201fd032eeSChristoph Hellwig 7211fd032eeSChristoph Hellwig if (!ret) 7221fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 7231fd032eeSChristoph Hellwig return ret; 7241fd032eeSChristoph Hellwig } 7251fd032eeSChristoph Hellwig 726d4b2b867SRoland Dreier static int spc_modesense_rwrecovery(struct se_device *dev, u8 pc, u8 *p) 7271fd032eeSChristoph Hellwig { 7281fd032eeSChristoph Hellwig p[0] = 0x01; 7291fd032eeSChristoph Hellwig p[1] = 0x0a; 7301fd032eeSChristoph Hellwig 731d4b2b867SRoland Dreier /* No changeable values for now */ 732d4b2b867SRoland Dreier if (pc == 1) 733d4b2b867SRoland Dreier goto out; 734d4b2b867SRoland Dreier 735d4b2b867SRoland Dreier out: 7361fd032eeSChristoph Hellwig return 12; 7371fd032eeSChristoph Hellwig } 7381fd032eeSChristoph Hellwig 739d4b2b867SRoland Dreier static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) 7401fd032eeSChristoph Hellwig { 7411fd032eeSChristoph Hellwig p[0] = 0x0a; 7421fd032eeSChristoph Hellwig p[1] = 0x0a; 743d4b2b867SRoland Dreier 744d4b2b867SRoland Dreier /* No changeable values for now */ 745d4b2b867SRoland Dreier if (pc == 1) 746d4b2b867SRoland Dreier goto out; 747d4b2b867SRoland Dreier 7481fd032eeSChristoph Hellwig p[2] = 2; 7491fd032eeSChristoph Hellwig /* 7501fd032eeSChristoph Hellwig * From spc4r23, 7.4.7 Control mode page 7511fd032eeSChristoph Hellwig * 7521fd032eeSChristoph Hellwig * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 7531fd032eeSChristoph Hellwig * restrictions on the algorithm used for reordering commands 7541fd032eeSChristoph Hellwig * having the SIMPLE task attribute (see SAM-4). 7551fd032eeSChristoph Hellwig * 7561fd032eeSChristoph Hellwig * Table 368 -- QUEUE ALGORITHM MODIFIER field 7571fd032eeSChristoph Hellwig * Code Description 7581fd032eeSChristoph Hellwig * 0h Restricted reordering 7591fd032eeSChristoph Hellwig * 1h Unrestricted reordering allowed 7601fd032eeSChristoph Hellwig * 2h to 7h Reserved 7611fd032eeSChristoph Hellwig * 8h to Fh Vendor specific 7621fd032eeSChristoph Hellwig * 7631fd032eeSChristoph Hellwig * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 7641fd032eeSChristoph Hellwig * the device server shall order the processing sequence of commands 7651fd032eeSChristoph Hellwig * having the SIMPLE task attribute such that data integrity is maintained 7661fd032eeSChristoph Hellwig * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 7671fd032eeSChristoph Hellwig * requests is halted at any time, the final value of all data observable 7681fd032eeSChristoph Hellwig * on the medium shall be the same as if all the commands had been processed 7691fd032eeSChristoph Hellwig * with the ORDERED task attribute). 7701fd032eeSChristoph Hellwig * 7711fd032eeSChristoph Hellwig * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 7721fd032eeSChristoph Hellwig * device server may reorder the processing sequence of commands having the 7731fd032eeSChristoph Hellwig * SIMPLE task attribute in any manner. Any data integrity exposures related to 7741fd032eeSChristoph Hellwig * command sequence order shall be explicitly handled by the application client 7751fd032eeSChristoph Hellwig * through the selection of appropriate ommands and task attributes. 7761fd032eeSChristoph Hellwig */ 7770fd97ccfSChristoph Hellwig p[3] = (dev->dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 7781fd032eeSChristoph Hellwig /* 7791fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 7801fd032eeSChristoph Hellwig * 7811fd032eeSChristoph Hellwig * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 7821fd032eeSChristoph Hellwig * 7831fd032eeSChristoph Hellwig * 00b: The logical unit shall clear any unit attention condition 7841fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 7851fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when a com- 7861fd032eeSChristoph Hellwig * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 7871fd032eeSChristoph Hellwig * status. 7881fd032eeSChristoph Hellwig * 7891fd032eeSChristoph Hellwig * 10b: The logical unit shall not clear any unit attention condition 7901fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 7911fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when 7921fd032eeSChristoph Hellwig * a command is completed with BUSY, TASK SET FULL, or RESERVATION 7931fd032eeSChristoph Hellwig * CONFLICT status. 7941fd032eeSChristoph Hellwig * 7951fd032eeSChristoph Hellwig * 11b a The logical unit shall not clear any unit attention condition 7961fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 7971fd032eeSChristoph Hellwig * status and shall establish a unit attention condition for the 7981fd032eeSChristoph Hellwig * initiator port associated with the I_T nexus on which the BUSY, 7991fd032eeSChristoph Hellwig * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 8001fd032eeSChristoph Hellwig * Depending on the status, the additional sense code shall be set to 8011fd032eeSChristoph Hellwig * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 8021fd032eeSChristoph Hellwig * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 8031fd032eeSChristoph Hellwig * command, a unit attention condition shall be established only once 8041fd032eeSChristoph Hellwig * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 8051fd032eeSChristoph Hellwig * to the number of commands completed with one of those status codes. 8061fd032eeSChristoph Hellwig */ 8070fd97ccfSChristoph Hellwig p[4] = (dev->dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : 8080fd97ccfSChristoph Hellwig (dev->dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; 8091fd032eeSChristoph Hellwig /* 8101fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8111fd032eeSChristoph Hellwig * 8121fd032eeSChristoph Hellwig * Task Aborted Status (TAS) bit set to zero. 8131fd032eeSChristoph Hellwig * 8141fd032eeSChristoph Hellwig * A task aborted status (TAS) bit set to zero specifies that aborted 8151fd032eeSChristoph Hellwig * tasks shall be terminated by the device server without any response 8161fd032eeSChristoph Hellwig * to the application client. A TAS bit set to one specifies that tasks 8171fd032eeSChristoph Hellwig * aborted by the actions of an I_T nexus other than the I_T nexus on 8181fd032eeSChristoph Hellwig * which the command was received shall be completed with TASK ABORTED 8191fd032eeSChristoph Hellwig * status (see SAM-4). 8201fd032eeSChristoph Hellwig */ 8210fd97ccfSChristoph Hellwig p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00; 8221fd032eeSChristoph Hellwig p[8] = 0xff; 8231fd032eeSChristoph Hellwig p[9] = 0xff; 8241fd032eeSChristoph Hellwig p[11] = 30; 8251fd032eeSChristoph Hellwig 826d4b2b867SRoland Dreier out: 8271fd032eeSChristoph Hellwig return 12; 8281fd032eeSChristoph Hellwig } 8291fd032eeSChristoph Hellwig 830d4b2b867SRoland Dreier static int spc_modesense_caching(struct se_device *dev, u8 pc, u8 *p) 8311fd032eeSChristoph Hellwig { 8321fd032eeSChristoph Hellwig p[0] = 0x08; 8331fd032eeSChristoph Hellwig p[1] = 0x12; 834d4b2b867SRoland Dreier 835d4b2b867SRoland Dreier /* No changeable values for now */ 836d4b2b867SRoland Dreier if (pc == 1) 837d4b2b867SRoland Dreier goto out; 838d4b2b867SRoland Dreier 839d0c8b259SNicholas Bellinger if (spc_check_dev_wce(dev)) 8401fd032eeSChristoph Hellwig p[2] = 0x04; /* Write Cache Enable */ 8411fd032eeSChristoph Hellwig p[12] = 0x20; /* Disabled Read Ahead */ 8421fd032eeSChristoph Hellwig 843d4b2b867SRoland Dreier out: 8441fd032eeSChristoph Hellwig return 20; 8451fd032eeSChristoph Hellwig } 8461fd032eeSChristoph Hellwig 8470f6d64ceSRoland Dreier static int spc_modesense_informational_exceptions(struct se_device *dev, u8 pc, unsigned char *p) 8480f6d64ceSRoland Dreier { 8490f6d64ceSRoland Dreier p[0] = 0x1c; 8500f6d64ceSRoland Dreier p[1] = 0x0a; 8510f6d64ceSRoland Dreier 8520f6d64ceSRoland Dreier /* No changeable values for now */ 8530f6d64ceSRoland Dreier if (pc == 1) 8540f6d64ceSRoland Dreier goto out; 8550f6d64ceSRoland Dreier 8560f6d64ceSRoland Dreier out: 8570f6d64ceSRoland Dreier return 12; 8580f6d64ceSRoland Dreier } 8590f6d64ceSRoland Dreier 860d4b2b867SRoland Dreier static struct { 861d4b2b867SRoland Dreier uint8_t page; 862d4b2b867SRoland Dreier uint8_t subpage; 863d4b2b867SRoland Dreier int (*emulate)(struct se_device *, u8, unsigned char *); 864d4b2b867SRoland Dreier } modesense_handlers[] = { 865d4b2b867SRoland Dreier { .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery }, 866d4b2b867SRoland Dreier { .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching }, 867d4b2b867SRoland Dreier { .page = 0x0a, .subpage = 0x00, .emulate = spc_modesense_control }, 8680f6d64ceSRoland Dreier { .page = 0x1c, .subpage = 0x00, .emulate = spc_modesense_informational_exceptions }, 869d4b2b867SRoland Dreier }; 870d4b2b867SRoland Dreier 8711fd032eeSChristoph Hellwig static void spc_modesense_write_protect(unsigned char *buf, int type) 8721fd032eeSChristoph Hellwig { 8731fd032eeSChristoph Hellwig /* 8741fd032eeSChristoph Hellwig * I believe that the WP bit (bit 7) in the mode header is the same for 8751fd032eeSChristoph Hellwig * all device types.. 8761fd032eeSChristoph Hellwig */ 8771fd032eeSChristoph Hellwig switch (type) { 8781fd032eeSChristoph Hellwig case TYPE_DISK: 8791fd032eeSChristoph Hellwig case TYPE_TAPE: 8801fd032eeSChristoph Hellwig default: 8811fd032eeSChristoph Hellwig buf[0] |= 0x80; /* WP bit */ 8821fd032eeSChristoph Hellwig break; 8831fd032eeSChristoph Hellwig } 8841fd032eeSChristoph Hellwig } 8851fd032eeSChristoph Hellwig 8861fd032eeSChristoph Hellwig static void spc_modesense_dpofua(unsigned char *buf, int type) 8871fd032eeSChristoph Hellwig { 8881fd032eeSChristoph Hellwig switch (type) { 8891fd032eeSChristoph Hellwig case TYPE_DISK: 8901fd032eeSChristoph Hellwig buf[0] |= 0x10; /* DPOFUA bit */ 8911fd032eeSChristoph Hellwig break; 8921fd032eeSChristoph Hellwig default: 8931fd032eeSChristoph Hellwig break; 8941fd032eeSChristoph Hellwig } 8951fd032eeSChristoph Hellwig } 8961fd032eeSChristoph Hellwig 897d4b2b867SRoland Dreier static int spc_modesense_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 898d4b2b867SRoland Dreier { 899d4b2b867SRoland Dreier *buf++ = 8; 900d4b2b867SRoland Dreier put_unaligned_be32(min(blocks, 0xffffffffull), buf); 901d4b2b867SRoland Dreier buf += 4; 902d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 903d4b2b867SRoland Dreier return 9; 904d4b2b867SRoland Dreier } 905d4b2b867SRoland Dreier 906d4b2b867SRoland Dreier static int spc_modesense_long_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 907d4b2b867SRoland Dreier { 908d4b2b867SRoland Dreier if (blocks <= 0xffffffff) 909d4b2b867SRoland Dreier return spc_modesense_blockdesc(buf + 3, blocks, block_size) + 3; 910d4b2b867SRoland Dreier 911d4b2b867SRoland Dreier *buf++ = 1; /* LONGLBA */ 912d4b2b867SRoland Dreier buf += 2; 913d4b2b867SRoland Dreier *buf++ = 16; 914d4b2b867SRoland Dreier put_unaligned_be64(blocks, buf); 915d4b2b867SRoland Dreier buf += 12; 916d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 917d4b2b867SRoland Dreier 918d4b2b867SRoland Dreier return 17; 919d4b2b867SRoland Dreier } 920d4b2b867SRoland Dreier 921de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) 9221fd032eeSChristoph Hellwig { 9231fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 9241fd032eeSChristoph Hellwig char *cdb = cmd->t_task_cdb; 925cab9609bSNicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF], *rbuf; 9261fd032eeSChristoph Hellwig int type = dev->transport->get_device_type(dev); 9271fd032eeSChristoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 928d4b2b867SRoland Dreier bool dbd = !!(cdb[1] & 0x08); 929d4b2b867SRoland Dreier bool llba = ten ? !!(cdb[1] & 0x10) : false; 930d4b2b867SRoland Dreier u8 pc = cdb[2] >> 6; 931d4b2b867SRoland Dreier u8 page = cdb[2] & 0x3f; 932d4b2b867SRoland Dreier u8 subpage = cdb[3]; 9331fd032eeSChristoph Hellwig int length = 0; 934d4b2b867SRoland Dreier int ret; 935d4b2b867SRoland Dreier int i; 9361fd032eeSChristoph Hellwig 937cab9609bSNicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 938cab9609bSNicholas Bellinger 939fecae40aSNicholas Bellinger /* 940fecae40aSNicholas Bellinger * Skip over MODE DATA LENGTH + MEDIUM TYPE fields to byte 3 for 941fecae40aSNicholas Bellinger * MODE_SENSE_10 and byte 2 for MODE_SENSE (6). 942fecae40aSNicholas Bellinger */ 943fecae40aSNicholas Bellinger length = ten ? 3 : 2; 944d4b2b867SRoland Dreier 945d4b2b867SRoland Dreier /* DEVICE-SPECIFIC PARAMETER */ 946d4b2b867SRoland Dreier if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || 947d4b2b867SRoland Dreier (cmd->se_deve && 948d4b2b867SRoland Dreier (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) 949d4b2b867SRoland Dreier spc_modesense_write_protect(&buf[length], type); 950d4b2b867SRoland Dreier 951d0c8b259SNicholas Bellinger if ((spc_check_dev_wce(dev)) && 952d4b2b867SRoland Dreier (dev->dev_attrib.emulate_fua_write > 0)) 953d4b2b867SRoland Dreier spc_modesense_dpofua(&buf[length], type); 954d4b2b867SRoland Dreier 955d4b2b867SRoland Dreier ++length; 956d4b2b867SRoland Dreier 957d4b2b867SRoland Dreier /* BLOCK DESCRIPTOR */ 958d4b2b867SRoland Dreier 959d4b2b867SRoland Dreier /* 960d4b2b867SRoland Dreier * For now we only include a block descriptor for disk (SBC) 961d4b2b867SRoland Dreier * devices; other command sets use a slightly different format. 962d4b2b867SRoland Dreier */ 963d4b2b867SRoland Dreier if (!dbd && type == TYPE_DISK) { 964d4b2b867SRoland Dreier u64 blocks = dev->transport->get_blocks(dev); 965d4b2b867SRoland Dreier u32 block_size = dev->dev_attrib.block_size; 9661fd032eeSChristoph Hellwig 9671fd032eeSChristoph Hellwig if (ten) { 968d4b2b867SRoland Dreier if (llba) { 969d4b2b867SRoland Dreier length += spc_modesense_long_blockdesc(&buf[length], 970d4b2b867SRoland Dreier blocks, block_size); 9711fd032eeSChristoph Hellwig } else { 972d4b2b867SRoland Dreier length += 3; 973d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], 974d4b2b867SRoland Dreier blocks, block_size); 975d4b2b867SRoland Dreier } 976d4b2b867SRoland Dreier } else { 977d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], blocks, 978d4b2b867SRoland Dreier block_size); 979d4b2b867SRoland Dreier } 980d4b2b867SRoland Dreier } else { 981d4b2b867SRoland Dreier if (ten) 982d4b2b867SRoland Dreier length += 4; 983d4b2b867SRoland Dreier else 984d4b2b867SRoland Dreier length += 1; 9851fd032eeSChristoph Hellwig } 9861fd032eeSChristoph Hellwig 987d4b2b867SRoland Dreier if (page == 0x3f) { 988d4b2b867SRoland Dreier if (subpage != 0x00 && subpage != 0xff) { 989de103c93SChristoph Hellwig pr_warn("MODE_SENSE: Invalid subpage code: 0x%02x\n", subpage); 990de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 991d4b2b867SRoland Dreier } 992d4b2b867SRoland Dreier 993d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) { 994d4b2b867SRoland Dreier /* 995d4b2b867SRoland Dreier * Tricky way to say all subpage 00h for 996d4b2b867SRoland Dreier * subpage==0, all subpages for subpage==0xff 997d4b2b867SRoland Dreier * (and we just checked above that those are 998d4b2b867SRoland Dreier * the only two possibilities). 999d4b2b867SRoland Dreier */ 1000d4b2b867SRoland Dreier if ((modesense_handlers[i].subpage & ~subpage) == 0) { 1001d4b2b867SRoland Dreier ret = modesense_handlers[i].emulate(dev, pc, &buf[length]); 1002d4b2b867SRoland Dreier if (!ten && length + ret >= 255) 1003d4b2b867SRoland Dreier break; 1004d4b2b867SRoland Dreier length += ret; 1005d4b2b867SRoland Dreier } 1006d4b2b867SRoland Dreier } 1007d4b2b867SRoland Dreier 1008d4b2b867SRoland Dreier goto set_length; 1009d4b2b867SRoland Dreier } 1010d4b2b867SRoland Dreier 1011d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 1012d4b2b867SRoland Dreier if (modesense_handlers[i].page == page && 1013d4b2b867SRoland Dreier modesense_handlers[i].subpage == subpage) { 1014d4b2b867SRoland Dreier length += modesense_handlers[i].emulate(dev, pc, &buf[length]); 1015d4b2b867SRoland Dreier goto set_length; 1016d4b2b867SRoland Dreier } 1017d4b2b867SRoland Dreier 1018d4b2b867SRoland Dreier /* 1019d4b2b867SRoland Dreier * We don't intend to implement: 1020d4b2b867SRoland Dreier * - obsolete page 03h "format parameters" (checked by Solaris) 1021d4b2b867SRoland Dreier */ 1022d4b2b867SRoland Dreier if (page != 0x03) 1023d4b2b867SRoland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 1024d4b2b867SRoland Dreier page, subpage); 1025d4b2b867SRoland Dreier 1026de103c93SChristoph Hellwig return TCM_UNKNOWN_MODE_PAGE; 1027d4b2b867SRoland Dreier 1028d4b2b867SRoland Dreier set_length: 1029d4b2b867SRoland Dreier if (ten) 1030d4b2b867SRoland Dreier put_unaligned_be16(length - 2, buf); 1031d4b2b867SRoland Dreier else 1032d4b2b867SRoland Dreier buf[0] = length - 1; 1033d4b2b867SRoland Dreier 1034cab9609bSNicholas Bellinger rbuf = transport_kmap_data_sg(cmd); 1035cab9609bSNicholas Bellinger if (rbuf) { 1036cab9609bSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_MODE_PAGE_BUF, cmd->data_length)); 1037cab9609bSNicholas Bellinger transport_kunmap_data_sg(cmd); 1038d4b2b867SRoland Dreier } 1039d4b2b867SRoland Dreier 10401fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 10411fd032eeSChristoph Hellwig return 0; 10421fd032eeSChristoph Hellwig } 10431fd032eeSChristoph Hellwig 1044de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) 10453a3c5e4aSRoland Dreier { 10463a3c5e4aSRoland Dreier struct se_device *dev = cmd->se_dev; 10473a3c5e4aSRoland Dreier char *cdb = cmd->t_task_cdb; 10483a3c5e4aSRoland Dreier bool ten = cdb[0] == MODE_SELECT_10; 10493a3c5e4aSRoland Dreier int off = ten ? 8 : 4; 10503a3c5e4aSRoland Dreier bool pf = !!(cdb[1] & 0x10); 10513a3c5e4aSRoland Dreier u8 page, subpage; 10523a3c5e4aSRoland Dreier unsigned char *buf; 10533a3c5e4aSRoland Dreier unsigned char tbuf[SE_MODE_PAGE_BUF]; 10543a3c5e4aSRoland Dreier int length; 10553a3c5e4aSRoland Dreier int ret = 0; 10563a3c5e4aSRoland Dreier int i; 10573a3c5e4aSRoland Dreier 105871f41fe1SRoland Dreier if (!cmd->data_length) { 105971f41fe1SRoland Dreier target_complete_cmd(cmd, GOOD); 106071f41fe1SRoland Dreier return 0; 106171f41fe1SRoland Dreier } 106271f41fe1SRoland Dreier 106371f41fe1SRoland Dreier if (cmd->data_length < off + 2) 106471f41fe1SRoland Dreier return TCM_PARAMETER_LIST_LENGTH_ERROR; 106571f41fe1SRoland Dreier 10663a3c5e4aSRoland Dreier buf = transport_kmap_data_sg(cmd); 1067de103c93SChristoph Hellwig if (!buf) 1068de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 10693a3c5e4aSRoland Dreier 10703a3c5e4aSRoland Dreier if (!pf) { 1071de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 10723a3c5e4aSRoland Dreier goto out; 10733a3c5e4aSRoland Dreier } 10743a3c5e4aSRoland Dreier 10753a3c5e4aSRoland Dreier page = buf[off] & 0x3f; 10763a3c5e4aSRoland Dreier subpage = buf[off] & 0x40 ? buf[off + 1] : 0; 10773a3c5e4aSRoland Dreier 10783a3c5e4aSRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 10793a3c5e4aSRoland Dreier if (modesense_handlers[i].page == page && 10803a3c5e4aSRoland Dreier modesense_handlers[i].subpage == subpage) { 10813a3c5e4aSRoland Dreier memset(tbuf, 0, SE_MODE_PAGE_BUF); 10823a3c5e4aSRoland Dreier length = modesense_handlers[i].emulate(dev, 0, tbuf); 10833a3c5e4aSRoland Dreier goto check_contents; 10843a3c5e4aSRoland Dreier } 10853a3c5e4aSRoland Dreier 1086de103c93SChristoph Hellwig ret = TCM_UNKNOWN_MODE_PAGE; 10873a3c5e4aSRoland Dreier goto out; 10883a3c5e4aSRoland Dreier 10893a3c5e4aSRoland Dreier check_contents: 109071f41fe1SRoland Dreier if (cmd->data_length < off + length) { 109171f41fe1SRoland Dreier ret = TCM_PARAMETER_LIST_LENGTH_ERROR; 109271f41fe1SRoland Dreier goto out; 109371f41fe1SRoland Dreier } 109471f41fe1SRoland Dreier 1095de103c93SChristoph Hellwig if (memcmp(buf + off, tbuf, length)) 1096de103c93SChristoph Hellwig ret = TCM_INVALID_PARAMETER_LIST; 10973a3c5e4aSRoland Dreier 10983a3c5e4aSRoland Dreier out: 10993a3c5e4aSRoland Dreier transport_kunmap_data_sg(cmd); 11003a3c5e4aSRoland Dreier 11013a3c5e4aSRoland Dreier if (!ret) 11023a3c5e4aSRoland Dreier target_complete_cmd(cmd, GOOD); 11033a3c5e4aSRoland Dreier return ret; 11043a3c5e4aSRoland Dreier } 11053a3c5e4aSRoland Dreier 1106de103c93SChristoph Hellwig static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd) 11071fd032eeSChristoph Hellwig { 11081fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 110932a8811fSPaolo Bonzini unsigned char *rbuf; 11101fd032eeSChristoph Hellwig u8 ua_asc = 0, ua_ascq = 0; 111132a8811fSPaolo Bonzini unsigned char buf[SE_SENSE_BUF]; 111232a8811fSPaolo Bonzini 111332a8811fSPaolo Bonzini memset(buf, 0, SE_SENSE_BUF); 11141fd032eeSChristoph Hellwig 11151fd032eeSChristoph Hellwig if (cdb[1] & 0x01) { 11161fd032eeSChristoph Hellwig pr_err("REQUEST_SENSE description emulation not" 11171fd032eeSChristoph Hellwig " supported\n"); 1118de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 11191fd032eeSChristoph Hellwig } 11201fd032eeSChristoph Hellwig 112132a8811fSPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 1122de103c93SChristoph Hellwig if (!rbuf) 1123de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1124de103c93SChristoph Hellwig 1125de103c93SChristoph Hellwig if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { 11261fd032eeSChristoph Hellwig /* 11271fd032eeSChristoph Hellwig * CURRENT ERROR, UNIT ATTENTION 11281fd032eeSChristoph Hellwig */ 11291fd032eeSChristoph Hellwig buf[0] = 0x70; 11301fd032eeSChristoph Hellwig buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; 11311fd032eeSChristoph Hellwig 11321fd032eeSChristoph Hellwig /* 11331fd032eeSChristoph Hellwig * The Additional Sense Code (ASC) from the UNIT ATTENTION 11341fd032eeSChristoph Hellwig */ 11351fd032eeSChristoph Hellwig buf[SPC_ASC_KEY_OFFSET] = ua_asc; 11361fd032eeSChristoph Hellwig buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq; 11371fd032eeSChristoph Hellwig buf[7] = 0x0A; 11381fd032eeSChristoph Hellwig } else { 11391fd032eeSChristoph Hellwig /* 11401fd032eeSChristoph Hellwig * CURRENT ERROR, NO SENSE 11411fd032eeSChristoph Hellwig */ 11421fd032eeSChristoph Hellwig buf[0] = 0x70; 11431fd032eeSChristoph Hellwig buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; 11441fd032eeSChristoph Hellwig 11451fd032eeSChristoph Hellwig /* 11461fd032eeSChristoph Hellwig * NO ADDITIONAL SENSE INFORMATION 11471fd032eeSChristoph Hellwig */ 11481fd032eeSChristoph Hellwig buf[SPC_ASC_KEY_OFFSET] = 0x00; 11491fd032eeSChristoph Hellwig buf[7] = 0x0A; 11501fd032eeSChristoph Hellwig } 11511fd032eeSChristoph Hellwig 115232a8811fSPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 11531fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 115432a8811fSPaolo Bonzini 11551fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 11561fd032eeSChristoph Hellwig return 0; 11571fd032eeSChristoph Hellwig } 11581fd032eeSChristoph Hellwig 1159de103c93SChristoph Hellwig sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd) 1160d1b1f805SChristoph Hellwig { 1161d1b1f805SChristoph Hellwig struct se_dev_entry *deve; 1162d1b1f805SChristoph Hellwig struct se_session *sess = cmd->se_sess; 1163d1b1f805SChristoph Hellwig unsigned char *buf; 1164d1b1f805SChristoph Hellwig u32 lun_count = 0, offset = 8, i; 1165d1b1f805SChristoph Hellwig 1166d1b1f805SChristoph Hellwig if (cmd->data_length < 16) { 1167d1b1f805SChristoph Hellwig pr_warn("REPORT LUNS allocation length %u too small\n", 1168d1b1f805SChristoph Hellwig cmd->data_length); 1169de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 1170d1b1f805SChristoph Hellwig } 1171d1b1f805SChristoph Hellwig 1172d1b1f805SChristoph Hellwig buf = transport_kmap_data_sg(cmd); 1173d1b1f805SChristoph Hellwig if (!buf) 1174de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1175d1b1f805SChristoph Hellwig 1176d1b1f805SChristoph Hellwig /* 1177d1b1f805SChristoph Hellwig * If no struct se_session pointer is present, this struct se_cmd is 1178d1b1f805SChristoph Hellwig * coming via a target_core_mod PASSTHROUGH op, and not through 1179d1b1f805SChristoph Hellwig * a $FABRIC_MOD. In that case, report LUN=0 only. 1180d1b1f805SChristoph Hellwig */ 1181d1b1f805SChristoph Hellwig if (!sess) { 1182d1b1f805SChristoph Hellwig int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); 1183d1b1f805SChristoph Hellwig lun_count = 1; 1184d1b1f805SChristoph Hellwig goto done; 1185d1b1f805SChristoph Hellwig } 1186d1b1f805SChristoph Hellwig 1187d1b1f805SChristoph Hellwig spin_lock_irq(&sess->se_node_acl->device_list_lock); 1188d1b1f805SChristoph Hellwig for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 1189d1b1f805SChristoph Hellwig deve = sess->se_node_acl->device_list[i]; 1190d1b1f805SChristoph Hellwig if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 1191d1b1f805SChristoph Hellwig continue; 1192d1b1f805SChristoph Hellwig /* 1193d1b1f805SChristoph Hellwig * We determine the correct LUN LIST LENGTH even once we 1194d1b1f805SChristoph Hellwig * have reached the initial allocation length. 1195d1b1f805SChristoph Hellwig * See SPC2-R20 7.19. 1196d1b1f805SChristoph Hellwig */ 1197d1b1f805SChristoph Hellwig lun_count++; 1198d1b1f805SChristoph Hellwig if ((offset + 8) > cmd->data_length) 1199d1b1f805SChristoph Hellwig continue; 1200d1b1f805SChristoph Hellwig 1201d1b1f805SChristoph Hellwig int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); 1202d1b1f805SChristoph Hellwig offset += 8; 1203d1b1f805SChristoph Hellwig } 1204d1b1f805SChristoph Hellwig spin_unlock_irq(&sess->se_node_acl->device_list_lock); 1205d1b1f805SChristoph Hellwig 1206d1b1f805SChristoph Hellwig /* 1207d1b1f805SChristoph Hellwig * See SPC3 r07, page 159. 1208d1b1f805SChristoph Hellwig */ 1209d1b1f805SChristoph Hellwig done: 1210d1b1f805SChristoph Hellwig lun_count *= 8; 1211d1b1f805SChristoph Hellwig buf[0] = ((lun_count >> 24) & 0xff); 1212d1b1f805SChristoph Hellwig buf[1] = ((lun_count >> 16) & 0xff); 1213d1b1f805SChristoph Hellwig buf[2] = ((lun_count >> 8) & 0xff); 1214d1b1f805SChristoph Hellwig buf[3] = (lun_count & 0xff); 1215d1b1f805SChristoph Hellwig transport_kunmap_data_sg(cmd); 1216d1b1f805SChristoph Hellwig 1217d1b1f805SChristoph Hellwig target_complete_cmd(cmd, GOOD); 1218d1b1f805SChristoph Hellwig return 0; 1219d1b1f805SChristoph Hellwig } 12208de530a5SChristoph Hellwig EXPORT_SYMBOL(spc_emulate_report_luns); 1221d1b1f805SChristoph Hellwig 1222de103c93SChristoph Hellwig static sense_reason_t 1223de103c93SChristoph Hellwig spc_emulate_testunitready(struct se_cmd *cmd) 12241fd032eeSChristoph Hellwig { 12251fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 12261fd032eeSChristoph Hellwig return 0; 12271fd032eeSChristoph Hellwig } 12281fd032eeSChristoph Hellwig 1229de103c93SChristoph Hellwig sense_reason_t 1230de103c93SChristoph Hellwig spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) 123188455ec4SChristoph Hellwig { 1232eba2ca45SNicholas Bellinger struct se_device *dev = cmd->se_dev; 123388455ec4SChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 123488455ec4SChristoph Hellwig 123588455ec4SChristoph Hellwig switch (cdb[0]) { 123688455ec4SChristoph Hellwig case MODE_SELECT: 123788455ec4SChristoph Hellwig *size = cdb[4]; 12383a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 123988455ec4SChristoph Hellwig break; 124088455ec4SChristoph Hellwig case MODE_SELECT_10: 124188455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 12423a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 124388455ec4SChristoph Hellwig break; 124488455ec4SChristoph Hellwig case MODE_SENSE: 124588455ec4SChristoph Hellwig *size = cdb[4]; 12461fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 124788455ec4SChristoph Hellwig break; 124888455ec4SChristoph Hellwig case MODE_SENSE_10: 124988455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 12501fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 125188455ec4SChristoph Hellwig break; 125288455ec4SChristoph Hellwig case LOG_SELECT: 125388455ec4SChristoph Hellwig case LOG_SENSE: 125488455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 125588455ec4SChristoph Hellwig break; 125688455ec4SChristoph Hellwig case PERSISTENT_RESERVE_IN: 125788455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1258d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_in; 125988455ec4SChristoph Hellwig break; 126088455ec4SChristoph Hellwig case PERSISTENT_RESERVE_OUT: 126188455ec4SChristoph Hellwig *size = (cdb[7] << 8) + cdb[8]; 1262d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_out; 126388455ec4SChristoph Hellwig break; 126488455ec4SChristoph Hellwig case RELEASE: 126588455ec4SChristoph Hellwig case RELEASE_10: 126688455ec4SChristoph Hellwig if (cdb[0] == RELEASE_10) 126788455ec4SChristoph Hellwig *size = (cdb[7] << 8) | cdb[8]; 126888455ec4SChristoph Hellwig else 126988455ec4SChristoph Hellwig *size = cmd->data_length; 127088455ec4SChristoph Hellwig 127188455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_release; 127288455ec4SChristoph Hellwig break; 127388455ec4SChristoph Hellwig case RESERVE: 127488455ec4SChristoph Hellwig case RESERVE_10: 127588455ec4SChristoph Hellwig /* 127688455ec4SChristoph Hellwig * The SPC-2 RESERVE does not contain a size in the SCSI CDB. 127788455ec4SChristoph Hellwig * Assume the passthrough or $FABRIC_MOD will tell us about it. 127888455ec4SChristoph Hellwig */ 127988455ec4SChristoph Hellwig if (cdb[0] == RESERVE_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_reserve; 128588455ec4SChristoph Hellwig break; 128688455ec4SChristoph Hellwig case REQUEST_SENSE: 128788455ec4SChristoph Hellwig *size = cdb[4]; 12881fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_request_sense; 128988455ec4SChristoph Hellwig break; 129088455ec4SChristoph Hellwig case INQUIRY: 129188455ec4SChristoph Hellwig *size = (cdb[3] << 8) + cdb[4]; 129288455ec4SChristoph Hellwig 129388455ec4SChristoph Hellwig /* 1294125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for INQUIRY. 129588455ec4SChristoph Hellwig * See spc4r17 section 5.3 129688455ec4SChristoph Hellwig */ 129788455ec4SChristoph Hellwig cmd->sam_task_attr = MSG_HEAD_TAG; 12981fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_inquiry; 129988455ec4SChristoph Hellwig break; 130088455ec4SChristoph Hellwig case SECURITY_PROTOCOL_IN: 130188455ec4SChristoph Hellwig case SECURITY_PROTOCOL_OUT: 130288455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 130388455ec4SChristoph Hellwig break; 130488455ec4SChristoph Hellwig case EXTENDED_COPY: 130504b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 130604b1b795SNicholas Bellinger cmd->execute_cmd = target_do_xcopy; 130704b1b795SNicholas Bellinger break; 130888455ec4SChristoph Hellwig case RECEIVE_COPY_RESULTS: 130904b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 131004b1b795SNicholas Bellinger cmd->execute_cmd = target_do_receive_copy_results; 131104b1b795SNicholas Bellinger break; 131204b1b795SNicholas Bellinger case READ_ATTRIBUTE: 131388455ec4SChristoph Hellwig case WRITE_ATTRIBUTE: 131488455ec4SChristoph Hellwig *size = (cdb[10] << 24) | (cdb[11] << 16) | 131588455ec4SChristoph Hellwig (cdb[12] << 8) | cdb[13]; 131688455ec4SChristoph Hellwig break; 131788455ec4SChristoph Hellwig case RECEIVE_DIAGNOSTIC: 131888455ec4SChristoph Hellwig case SEND_DIAGNOSTIC: 131988455ec4SChristoph Hellwig *size = (cdb[3] << 8) | cdb[4]; 132088455ec4SChristoph Hellwig break; 132188455ec4SChristoph Hellwig case WRITE_BUFFER: 132288455ec4SChristoph Hellwig *size = (cdb[6] << 16) + (cdb[7] << 8) + cdb[8]; 132388455ec4SChristoph Hellwig break; 132488455ec4SChristoph Hellwig case REPORT_LUNS: 1325d1b1f805SChristoph Hellwig cmd->execute_cmd = spc_emulate_report_luns; 132688455ec4SChristoph Hellwig *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; 132788455ec4SChristoph Hellwig /* 1328125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for REPORT_LUNS 132988455ec4SChristoph Hellwig * See spc4r17 section 5.3 133088455ec4SChristoph Hellwig */ 133188455ec4SChristoph Hellwig cmd->sam_task_attr = MSG_HEAD_TAG; 133288455ec4SChristoph Hellwig break; 133388455ec4SChristoph Hellwig case TEST_UNIT_READY: 13341fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_testunitready; 1335d6e0175cSChristoph Hellwig *size = 0; 133688455ec4SChristoph Hellwig break; 1337eba2ca45SNicholas Bellinger case MAINTENANCE_IN: 1338eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1339eba2ca45SNicholas Bellinger /* 1340eba2ca45SNicholas Bellinger * MAINTENANCE_IN from SCC-2 1341eba2ca45SNicholas Bellinger * Check for emulated MI_REPORT_TARGET_PGS 1342eba2ca45SNicholas Bellinger */ 1343c87fbd56SChristoph Hellwig if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS) { 1344eba2ca45SNicholas Bellinger cmd->execute_cmd = 1345eba2ca45SNicholas Bellinger target_emulate_report_target_port_groups; 1346eba2ca45SNicholas Bellinger } 1347eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1348eba2ca45SNicholas Bellinger } else { 1349eba2ca45SNicholas Bellinger /* 1350eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1351eba2ca45SNicholas Bellinger */ 1352eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1353eba2ca45SNicholas Bellinger } 1354eba2ca45SNicholas Bellinger break; 1355eba2ca45SNicholas Bellinger case MAINTENANCE_OUT: 1356eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1357eba2ca45SNicholas Bellinger /* 1358eba2ca45SNicholas Bellinger * MAINTENANCE_OUT from SCC-2 1359eba2ca45SNicholas Bellinger * Check for emulated MO_SET_TARGET_PGS. 1360eba2ca45SNicholas Bellinger */ 1361c87fbd56SChristoph Hellwig if (cdb[1] == MO_SET_TARGET_PGS) { 1362eba2ca45SNicholas Bellinger cmd->execute_cmd = 1363eba2ca45SNicholas Bellinger target_emulate_set_target_port_groups; 1364eba2ca45SNicholas Bellinger } 1365eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1366eba2ca45SNicholas Bellinger } else { 1367eba2ca45SNicholas Bellinger /* 1368eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1369eba2ca45SNicholas Bellinger */ 1370eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1371eba2ca45SNicholas Bellinger } 1372eba2ca45SNicholas Bellinger break; 137388455ec4SChristoph Hellwig default: 137488455ec4SChristoph Hellwig pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode" 137588455ec4SChristoph Hellwig " 0x%02x, sending CHECK_CONDITION.\n", 137688455ec4SChristoph Hellwig cmd->se_tfo->get_fabric_name(), cdb[0]); 1377de103c93SChristoph Hellwig return TCM_UNSUPPORTED_SCSI_OPCODE; 137888455ec4SChristoph Hellwig } 137988455ec4SChristoph Hellwig 138088455ec4SChristoph Hellwig return 0; 138188455ec4SChristoph Hellwig } 138288455ec4SChristoph Hellwig EXPORT_SYMBOL(spc_parse_cdb); 1383