11a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 288455ec4SChristoph Hellwig /* 388455ec4SChristoph Hellwig * SCSI Primary Commands (SPC) parsing and emulation. 488455ec4SChristoph Hellwig * 54c76251eSNicholas Bellinger * (c) Copyright 2002-2013 Datera, Inc. 688455ec4SChristoph Hellwig * 788455ec4SChristoph Hellwig * Nicholas A. Bellinger <nab@kernel.org> 888455ec4SChristoph Hellwig */ 988455ec4SChristoph Hellwig 1088455ec4SChristoph Hellwig #include <linux/kernel.h> 1188455ec4SChristoph Hellwig #include <linux/module.h> 1288455ec4SChristoph Hellwig #include <asm/unaligned.h> 1388455ec4SChristoph Hellwig 14ba929992SBart Van Assche #include <scsi/scsi_proto.h> 15ba929992SBart Van Assche #include <scsi/scsi_common.h> 1688455ec4SChristoph Hellwig #include <scsi/scsi_tcq.h> 1788455ec4SChristoph Hellwig 1888455ec4SChristoph Hellwig #include <target/target_core_base.h> 1988455ec4SChristoph Hellwig #include <target/target_core_backend.h> 2088455ec4SChristoph Hellwig #include <target/target_core_fabric.h> 2188455ec4SChristoph Hellwig 2288455ec4SChristoph Hellwig #include "target_core_internal.h" 23eba2ca45SNicholas Bellinger #include "target_core_alua.h" 2488455ec4SChristoph Hellwig #include "target_core_pr.h" 2588455ec4SChristoph Hellwig #include "target_core_ua.h" 2604b1b795SNicholas Bellinger #include "target_core_xcopy.h" 2788455ec4SChristoph Hellwig 28adf653f9SChristoph Hellwig static void spc_fill_alua_data(struct se_lun *lun, unsigned char *buf) 291fd032eeSChristoph Hellwig { 301fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 311fd032eeSChristoph Hellwig 321fd032eeSChristoph Hellwig /* 331fd032eeSChristoph Hellwig * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS. 341fd032eeSChristoph Hellwig */ 351fd032eeSChristoph Hellwig buf[5] = 0x80; 361fd032eeSChristoph Hellwig 371fd032eeSChristoph Hellwig /* 38125d0119SHannes Reinecke * Set TPGS field for explicit and/or implicit ALUA access type 391fd032eeSChristoph Hellwig * and opteration. 401fd032eeSChristoph Hellwig * 411fd032eeSChristoph Hellwig * See spc4r17 section 6.4.2 Table 135 421fd032eeSChristoph Hellwig */ 43adf653f9SChristoph Hellwig spin_lock(&lun->lun_tg_pt_gp_lock); 44adf653f9SChristoph Hellwig tg_pt_gp = lun->lun_tg_pt_gp; 451fd032eeSChristoph Hellwig if (tg_pt_gp) 461fd032eeSChristoph Hellwig buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; 47adf653f9SChristoph Hellwig spin_unlock(&lun->lun_tg_pt_gp_lock); 481fd032eeSChristoph Hellwig } 491fd032eeSChristoph Hellwig 500dfa1c5dSHannes Reinecke sense_reason_t 510dfa1c5dSHannes Reinecke spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) 521fd032eeSChristoph Hellwig { 531fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 541fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 55d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 561fd032eeSChristoph Hellwig 571fd032eeSChristoph Hellwig /* Set RMB (removable media) for tape devices */ 581fd032eeSChristoph Hellwig if (dev->transport->get_device_type(dev) == TYPE_TAPE) 591fd032eeSChristoph Hellwig buf[1] = 0x80; 601fd032eeSChristoph Hellwig 6148c2567dSChristoph Hellwig buf[2] = 0x05; /* SPC-3 */ 621fd032eeSChristoph Hellwig 631fd032eeSChristoph Hellwig /* 641fd032eeSChristoph Hellwig * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 651fd032eeSChristoph Hellwig * 661fd032eeSChristoph Hellwig * SPC4 says: 671fd032eeSChristoph Hellwig * A RESPONSE DATA FORMAT field set to 2h indicates that the 681fd032eeSChristoph Hellwig * standard INQUIRY data is in the format defined in this 691fd032eeSChristoph Hellwig * standard. Response data format values less than 2h are 701fd032eeSChristoph Hellwig * obsolete. Response data format values greater than 2h are 711fd032eeSChristoph Hellwig * reserved. 721fd032eeSChristoph Hellwig */ 731fd032eeSChristoph Hellwig buf[3] = 2; 741fd032eeSChristoph Hellwig 751fd032eeSChristoph Hellwig /* 761fd032eeSChristoph Hellwig * Enable SCCS and TPGS fields for Emulated ALUA 771fd032eeSChristoph Hellwig */ 78adf653f9SChristoph Hellwig spc_fill_alua_data(lun, buf); 791fd032eeSChristoph Hellwig 80d397a445SNicholas Bellinger /* 81d397a445SNicholas Bellinger * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY 82d397a445SNicholas Bellinger */ 83d397a445SNicholas Bellinger if (dev->dev_attrib.emulate_3pc) 84d397a445SNicholas Bellinger buf[5] |= 0x8; 85bdbad2bdSNicholas Bellinger /* 86d2c5304cSNicholas Bellinger * Set Protection (PROTECT) bit when DIF has been enabled on the 879ef5466eSNicholas Bellinger * device, and the fabric supports VERIFY + PASS. Also report 889ef5466eSNicholas Bellinger * PROTECT=1 if sess_prot_type has been configured to allow T10-PI 899ef5466eSNicholas Bellinger * to unprotected devices. 90bdbad2bdSNicholas Bellinger */ 91d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 929ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || cmd->se_sess->sess_prot_type) 93bdbad2bdSNicholas Bellinger buf[5] |= 0x1; 94d2c5304cSNicholas Bellinger } 95d397a445SNicholas Bellinger 961fd032eeSChristoph Hellwig buf[7] = 0x2; /* CmdQue=1 */ 971fd032eeSChristoph Hellwig 980de26357SDavid Disseldorp /* 990de26357SDavid Disseldorp * ASCII data fields described as being left-aligned shall have any 1000de26357SDavid Disseldorp * unused bytes at the end of the field (i.e., highest offset) and the 1010de26357SDavid Disseldorp * unused bytes shall be filled with ASCII space characters (20h). 1020de26357SDavid Disseldorp */ 103b2da4abfSDavid Disseldorp memset(&buf[8], 0x20, 104b2da4abfSDavid Disseldorp INQUIRY_VENDOR_LEN + INQUIRY_MODEL_LEN + INQUIRY_REVISION_LEN); 1052d882847SDavid Disseldorp memcpy(&buf[8], dev->t10_wwn.vendor, 1062d882847SDavid Disseldorp strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); 107ee60bddbSNicholas Bellinger memcpy(&buf[16], dev->t10_wwn.model, 108b2da4abfSDavid Disseldorp strnlen(dev->t10_wwn.model, INQUIRY_MODEL_LEN)); 109ee60bddbSNicholas Bellinger memcpy(&buf[32], dev->t10_wwn.revision, 110b2da4abfSDavid Disseldorp strnlen(dev->t10_wwn.revision, INQUIRY_REVISION_LEN)); 1111fd032eeSChristoph Hellwig buf[4] = 31; /* Set additional length to 31 */ 1121fd032eeSChristoph Hellwig 1131fd032eeSChristoph Hellwig return 0; 1141fd032eeSChristoph Hellwig } 1150dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_inquiry_std); 1161fd032eeSChristoph Hellwig 1171fd032eeSChristoph Hellwig /* unit serial number */ 118de103c93SChristoph Hellwig static sense_reason_t 119de103c93SChristoph Hellwig spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 1201fd032eeSChristoph Hellwig { 1211fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1229aff64e1SChristophe Vu-Brugier u16 len; 1231fd032eeSChristoph Hellwig 1240fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 1259aff64e1SChristophe Vu-Brugier len = sprintf(&buf[4], "%s", dev->t10_wwn.unit_serial); 1261fd032eeSChristoph Hellwig len++; /* Extra Byte for NULL Terminator */ 1271fd032eeSChristoph Hellwig buf[3] = len; 1281fd032eeSChristoph Hellwig } 1291fd032eeSChristoph Hellwig return 0; 1301fd032eeSChristoph Hellwig } 1311fd032eeSChristoph Hellwig 13217f947b8SSergey Samoylenko /* 13317f947b8SSergey Samoylenko * Generate NAA IEEE Registered Extended designator 13417f947b8SSergey Samoylenko */ 13517f947b8SSergey Samoylenko void spc_gen_naa_6h_vendor_specific(struct se_device *dev, 1361fd032eeSChristoph Hellwig unsigned char *buf) 1371fd032eeSChristoph Hellwig { 1380fd97ccfSChristoph Hellwig unsigned char *p = &dev->t10_wwn.unit_serial[0]; 139*2469f1e0SSergey Samoylenko u32 company_id = dev->t10_wwn.company_id; 14017f947b8SSergey Samoylenko int cnt, off = 0; 1411fd032eeSChristoph Hellwig bool next = true; 1421fd032eeSChristoph Hellwig 1431fd032eeSChristoph Hellwig /* 14417f947b8SSergey Samoylenko * Start NAA IEEE Registered Extended Identifier/Designator 14517f947b8SSergey Samoylenko */ 146*2469f1e0SSergey Samoylenko buf[off] = 0x6 << 4; 14717f947b8SSergey Samoylenko 148*2469f1e0SSergey Samoylenko /* IEEE COMPANY_ID */ 149*2469f1e0SSergey Samoylenko buf[off++] |= (company_id >> 20) & 0xf; 150*2469f1e0SSergey Samoylenko buf[off++] = (company_id >> 12) & 0xff; 151*2469f1e0SSergey Samoylenko buf[off++] = (company_id >> 4) & 0xff; 152*2469f1e0SSergey Samoylenko buf[off] = (company_id & 0xf) << 4; 15317f947b8SSergey Samoylenko 15417f947b8SSergey Samoylenko /* 1551fd032eeSChristoph Hellwig * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 1561fd032eeSChristoph Hellwig * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 1571fd032eeSChristoph Hellwig * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 1581fd032eeSChristoph Hellwig * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 1591fd032eeSChristoph Hellwig * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 1601fd032eeSChristoph Hellwig * per device uniqeness. 1611fd032eeSChristoph Hellwig */ 16217f947b8SSergey Samoylenko for (cnt = off + 13; *p && off < cnt; p++) { 1631fd032eeSChristoph Hellwig int val = hex_to_bin(*p); 1641fd032eeSChristoph Hellwig 1651fd032eeSChristoph Hellwig if (val < 0) 1661fd032eeSChristoph Hellwig continue; 1671fd032eeSChristoph Hellwig 1681fd032eeSChristoph Hellwig if (next) { 1691fd032eeSChristoph Hellwig next = false; 17017f947b8SSergey Samoylenko buf[off++] |= val; 1711fd032eeSChristoph Hellwig } else { 1721fd032eeSChristoph Hellwig next = true; 17317f947b8SSergey Samoylenko buf[off] = val << 4; 1741fd032eeSChristoph Hellwig } 1751fd032eeSChristoph Hellwig } 1761fd032eeSChristoph Hellwig } 1771fd032eeSChristoph Hellwig 1781fd032eeSChristoph Hellwig /* 1791fd032eeSChristoph Hellwig * Device identification VPD, for a complete list of 1801fd032eeSChristoph Hellwig * DESIGNATOR TYPEs see spc4r17 Table 459. 1811fd032eeSChristoph Hellwig */ 1820dfa1c5dSHannes Reinecke sense_reason_t 183de103c93SChristoph Hellwig spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 1841fd032eeSChristoph Hellwig { 1851fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1861fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 1871fd032eeSChristoph Hellwig struct se_portal_group *tpg = NULL; 1881fd032eeSChristoph Hellwig struct t10_alua_lu_gp_member *lu_gp_mem; 1891fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 1900fd97ccfSChristoph Hellwig unsigned char *prod = &dev->t10_wwn.model[0]; 1911fd032eeSChristoph Hellwig u32 prod_len; 1921fd032eeSChristoph Hellwig u32 unit_serial_len, off = 0; 1931fd032eeSChristoph Hellwig u16 len = 0, id_len; 1941fd032eeSChristoph Hellwig 1951fd032eeSChristoph Hellwig off = 4; 1961fd032eeSChristoph Hellwig 1971fd032eeSChristoph Hellwig /* 1981fd032eeSChristoph Hellwig * NAA IEEE Registered Extended Assigned designator format, see 1991fd032eeSChristoph Hellwig * spc4r17 section 7.7.3.6.5 2001fd032eeSChristoph Hellwig * 2011fd032eeSChristoph Hellwig * We depend upon a target_core_mod/ConfigFS provided 2021fd032eeSChristoph Hellwig * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 2031fd032eeSChristoph Hellwig * value in order to return the NAA id. 2041fd032eeSChristoph Hellwig */ 2050fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL)) 2061fd032eeSChristoph Hellwig goto check_t10_vend_desc; 2071fd032eeSChristoph Hellwig 2081fd032eeSChristoph Hellwig /* CODE SET == Binary */ 2091fd032eeSChristoph Hellwig buf[off++] = 0x1; 2101fd032eeSChristoph Hellwig 2111fd032eeSChristoph Hellwig /* Set ASSOCIATION == addressed logical unit: 0)b */ 2121fd032eeSChristoph Hellwig buf[off] = 0x00; 2131fd032eeSChristoph Hellwig 2141fd032eeSChristoph Hellwig /* Identifier/Designator type == NAA identifier */ 2151fd032eeSChristoph Hellwig buf[off++] |= 0x3; 2161fd032eeSChristoph Hellwig off++; 2171fd032eeSChristoph Hellwig 2181fd032eeSChristoph Hellwig /* Identifier/Designator length */ 2191fd032eeSChristoph Hellwig buf[off++] = 0x10; 2201fd032eeSChristoph Hellwig 22117f947b8SSergey Samoylenko /* NAA IEEE Registered Extended designator */ 22217f947b8SSergey Samoylenko spc_gen_naa_6h_vendor_specific(dev, &buf[off]); 2231fd032eeSChristoph Hellwig 2241fd032eeSChristoph Hellwig len = 20; 2251fd032eeSChristoph Hellwig off = (len + 4); 2261fd032eeSChristoph Hellwig 2271fd032eeSChristoph Hellwig check_t10_vend_desc: 2281fd032eeSChristoph Hellwig /* 2291fd032eeSChristoph Hellwig * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 2301fd032eeSChristoph Hellwig */ 2311fd032eeSChristoph Hellwig id_len = 8; /* For Vendor field */ 2321fd032eeSChristoph Hellwig prod_len = 4; /* For VPD Header */ 2331fd032eeSChristoph Hellwig prod_len += 8; /* For Vendor field */ 2341fd032eeSChristoph Hellwig prod_len += strlen(prod); 2351fd032eeSChristoph Hellwig prod_len++; /* For : */ 2361fd032eeSChristoph Hellwig 2370fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 2380fd97ccfSChristoph Hellwig unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]); 2391fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 2401fd032eeSChristoph Hellwig 2411fd032eeSChristoph Hellwig id_len += sprintf(&buf[off+12], "%s:%s", prod, 2420fd97ccfSChristoph Hellwig &dev->t10_wwn.unit_serial[0]); 2431fd032eeSChristoph Hellwig } 2441fd032eeSChristoph Hellwig buf[off] = 0x2; /* ASCII */ 2451fd032eeSChristoph Hellwig buf[off+1] = 0x1; /* T10 Vendor ID */ 2461fd032eeSChristoph Hellwig buf[off+2] = 0x0; 2470de26357SDavid Disseldorp /* left align Vendor ID and pad with spaces */ 2482d882847SDavid Disseldorp memset(&buf[off+4], 0x20, INQUIRY_VENDOR_LEN); 2492d882847SDavid Disseldorp memcpy(&buf[off+4], dev->t10_wwn.vendor, 2502d882847SDavid Disseldorp strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); 2511fd032eeSChristoph Hellwig /* Extra Byte for NULL Terminator */ 2521fd032eeSChristoph Hellwig id_len++; 2531fd032eeSChristoph Hellwig /* Identifier Length */ 2541fd032eeSChristoph Hellwig buf[off+3] = id_len; 2551fd032eeSChristoph Hellwig /* Header size for Designation descriptor */ 2561fd032eeSChristoph Hellwig len += (id_len + 4); 2571fd032eeSChristoph Hellwig off += (id_len + 4); 258adf653f9SChristoph Hellwig 259adf653f9SChristoph Hellwig if (1) { 2601fd032eeSChristoph Hellwig struct t10_alua_lu_gp *lu_gp; 261fbfe858fSHannes Reinecke u32 padding, scsi_name_len, scsi_target_len; 2621fd032eeSChristoph Hellwig u16 lu_gp_id = 0; 2631fd032eeSChristoph Hellwig u16 tg_pt_gp_id = 0; 2641fd032eeSChristoph Hellwig u16 tpgt; 2651fd032eeSChristoph Hellwig 266adf653f9SChristoph Hellwig tpg = lun->lun_tpg; 2671fd032eeSChristoph Hellwig /* 2681fd032eeSChristoph Hellwig * Relative target port identifer, see spc4r17 2691fd032eeSChristoph Hellwig * section 7.7.3.7 2701fd032eeSChristoph Hellwig * 2711fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2721fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2731fd032eeSChristoph Hellwig */ 2742aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 2751fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 2761fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 2771fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 2781fd032eeSChristoph Hellwig buf[off] |= 0x10; 2791fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Relative target port identifer */ 2801fd032eeSChristoph Hellwig buf[off++] |= 0x4; 2811fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 2821fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 2831fd032eeSChristoph Hellwig /* Skip over Obsolete field in RTPI payload 2841fd032eeSChristoph Hellwig * in Table 472 */ 2851fd032eeSChristoph Hellwig off += 2; 286a85d667eSBart Van Assche put_unaligned_be16(lun->lun_rtpi, &buf[off]); 287a85d667eSBart Van Assche off += 2; 2881fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 2891fd032eeSChristoph Hellwig /* 2901fd032eeSChristoph Hellwig * Target port group identifier, see spc4r17 2911fd032eeSChristoph Hellwig * section 7.7.3.8 2921fd032eeSChristoph Hellwig * 2931fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 2941fd032eeSChristoph Hellwig * section 7.5.1 Table 362 2951fd032eeSChristoph Hellwig */ 296adf653f9SChristoph Hellwig spin_lock(&lun->lun_tg_pt_gp_lock); 297adf653f9SChristoph Hellwig tg_pt_gp = lun->lun_tg_pt_gp; 2981fd032eeSChristoph Hellwig if (!tg_pt_gp) { 299adf653f9SChristoph Hellwig spin_unlock(&lun->lun_tg_pt_gp_lock); 3001fd032eeSChristoph Hellwig goto check_lu_gp; 3011fd032eeSChristoph Hellwig } 3021fd032eeSChristoph Hellwig tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 303adf653f9SChristoph Hellwig spin_unlock(&lun->lun_tg_pt_gp_lock); 3041fd032eeSChristoph Hellwig 3052aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3061fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3071fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3081fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3091fd032eeSChristoph Hellwig buf[off] |= 0x10; 3101fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Target port group identifier */ 3111fd032eeSChristoph Hellwig buf[off++] |= 0x5; 3121fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3131fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3141fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 315a85d667eSBart Van Assche put_unaligned_be16(tg_pt_gp_id, &buf[off]); 316a85d667eSBart Van Assche off += 2; 3171fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3181fd032eeSChristoph Hellwig /* 3191fd032eeSChristoph Hellwig * Logical Unit Group identifier, see spc4r17 3201fd032eeSChristoph Hellwig * section 7.7.3.8 3211fd032eeSChristoph Hellwig */ 3221fd032eeSChristoph Hellwig check_lu_gp: 3231fd032eeSChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 3241fd032eeSChristoph Hellwig if (!lu_gp_mem) 3251fd032eeSChristoph Hellwig goto check_scsi_name; 3261fd032eeSChristoph Hellwig 3271fd032eeSChristoph Hellwig spin_lock(&lu_gp_mem->lu_gp_mem_lock); 3281fd032eeSChristoph Hellwig lu_gp = lu_gp_mem->lu_gp; 3291fd032eeSChristoph Hellwig if (!lu_gp) { 3301fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3311fd032eeSChristoph Hellwig goto check_scsi_name; 3321fd032eeSChristoph Hellwig } 3331fd032eeSChristoph Hellwig lu_gp_id = lu_gp->lu_gp_id; 3341fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3351fd032eeSChristoph Hellwig 3361fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3371fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Logical Unit Group identifier */ 3381fd032eeSChristoph Hellwig buf[off++] |= 0x6; 3391fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3401fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3411fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 342a85d667eSBart Van Assche put_unaligned_be16(lu_gp_id, &buf[off]); 343a85d667eSBart Van Assche off += 2; 3441fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3451fd032eeSChristoph Hellwig /* 3461fd032eeSChristoph Hellwig * SCSI name string designator, see spc4r17 3471fd032eeSChristoph Hellwig * section 7.7.3.11 3481fd032eeSChristoph Hellwig * 3491fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3501fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3511fd032eeSChristoph Hellwig */ 3521fd032eeSChristoph Hellwig check_scsi_name: 3532aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3541fd032eeSChristoph Hellwig buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 3551fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3561fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3571fd032eeSChristoph Hellwig buf[off] |= 0x10; 3581fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == SCSI name string */ 3591fd032eeSChristoph Hellwig buf[off++] |= 0x8; 3601fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved and length */ 3611fd032eeSChristoph Hellwig /* 3621fd032eeSChristoph Hellwig * SCSI name string identifer containing, $FABRIC_MOD 3631fd032eeSChristoph Hellwig * dependent information. For LIO-Target and iSCSI 3641fd032eeSChristoph Hellwig * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 3651fd032eeSChristoph Hellwig * UTF-8 encoding. 3661fd032eeSChristoph Hellwig */ 3671fd032eeSChristoph Hellwig tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 3681fd032eeSChristoph Hellwig scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 3691fd032eeSChristoph Hellwig tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 3701fd032eeSChristoph Hellwig scsi_name_len += 1 /* Include NULL terminator */; 3711fd032eeSChristoph Hellwig /* 3721fd032eeSChristoph Hellwig * The null-terminated, null-padded (see 4.4.2) SCSI 3731fd032eeSChristoph Hellwig * NAME STRING field contains a UTF-8 format string. 3741fd032eeSChristoph Hellwig * The number of bytes in the SCSI NAME STRING field 3751fd032eeSChristoph Hellwig * (i.e., the value in the DESIGNATOR LENGTH field) 3761fd032eeSChristoph Hellwig * shall be no larger than 256 and shall be a multiple 3771fd032eeSChristoph Hellwig * of four. 3781fd032eeSChristoph Hellwig */ 37903ba84caSHannes Reinecke padding = ((-scsi_name_len) & 3); 3801fd032eeSChristoph Hellwig if (padding) 3811fd032eeSChristoph Hellwig scsi_name_len += padding; 38203ba84caSHannes Reinecke if (scsi_name_len > 256) 38303ba84caSHannes Reinecke scsi_name_len = 256; 3841fd032eeSChristoph Hellwig 3851fd032eeSChristoph Hellwig buf[off-1] = scsi_name_len; 3861fd032eeSChristoph Hellwig off += scsi_name_len; 3871fd032eeSChristoph Hellwig /* Header size + Designation descriptor */ 3881fd032eeSChristoph Hellwig len += (scsi_name_len + 4); 389fbfe858fSHannes Reinecke 390fbfe858fSHannes Reinecke /* 391fbfe858fSHannes Reinecke * Target device designator 392fbfe858fSHannes Reinecke */ 3932aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 394fbfe858fSHannes Reinecke buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 395fbfe858fSHannes Reinecke buf[off] = 0x80; /* Set PIV=1 */ 396fbfe858fSHannes Reinecke /* Set ASSOCIATION == target device: 10b */ 397fbfe858fSHannes Reinecke buf[off] |= 0x20; 398fbfe858fSHannes Reinecke /* DESIGNATOR TYPE == SCSI name string */ 399fbfe858fSHannes Reinecke buf[off++] |= 0x8; 400fbfe858fSHannes Reinecke off += 2; /* Skip over Reserved and length */ 401fbfe858fSHannes Reinecke /* 402fbfe858fSHannes Reinecke * SCSI name string identifer containing, $FABRIC_MOD 403fbfe858fSHannes Reinecke * dependent information. For LIO-Target and iSCSI 404fbfe858fSHannes Reinecke * Target Port, this means "<iSCSI name>" in 405fbfe858fSHannes Reinecke * UTF-8 encoding. 406fbfe858fSHannes Reinecke */ 407fbfe858fSHannes Reinecke scsi_target_len = sprintf(&buf[off], "%s", 408fbfe858fSHannes Reinecke tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 409fbfe858fSHannes Reinecke scsi_target_len += 1 /* Include NULL terminator */; 410fbfe858fSHannes Reinecke /* 411fbfe858fSHannes Reinecke * The null-terminated, null-padded (see 4.4.2) SCSI 412fbfe858fSHannes Reinecke * NAME STRING field contains a UTF-8 format string. 413fbfe858fSHannes Reinecke * The number of bytes in the SCSI NAME STRING field 414fbfe858fSHannes Reinecke * (i.e., the value in the DESIGNATOR LENGTH field) 415fbfe858fSHannes Reinecke * shall be no larger than 256 and shall be a multiple 416fbfe858fSHannes Reinecke * of four. 417fbfe858fSHannes Reinecke */ 418fbfe858fSHannes Reinecke padding = ((-scsi_target_len) & 3); 419fbfe858fSHannes Reinecke if (padding) 420fbfe858fSHannes Reinecke scsi_target_len += padding; 4216a16d7beSRoland Dreier if (scsi_target_len > 256) 4226a16d7beSRoland Dreier scsi_target_len = 256; 423fbfe858fSHannes Reinecke 424fbfe858fSHannes Reinecke buf[off-1] = scsi_target_len; 425fbfe858fSHannes Reinecke off += scsi_target_len; 426fbfe858fSHannes Reinecke 427fbfe858fSHannes Reinecke /* Header size + Designation descriptor */ 428fbfe858fSHannes Reinecke len += (scsi_target_len + 4); 4291fd032eeSChristoph Hellwig } 430a85d667eSBart Van Assche put_unaligned_be16(len, &buf[2]); /* Page Length for VPD 0x83 */ 4311fd032eeSChristoph Hellwig return 0; 4321fd032eeSChristoph Hellwig } 4330dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_evpd_83); 4341fd032eeSChristoph Hellwig 4351fd032eeSChristoph Hellwig /* Extended INQUIRY Data VPD Page */ 436de103c93SChristoph Hellwig static sense_reason_t 437de103c93SChristoph Hellwig spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 4381fd032eeSChristoph Hellwig { 439d0c8b259SNicholas Bellinger struct se_device *dev = cmd->se_dev; 440d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 441d0c8b259SNicholas Bellinger 4421fd032eeSChristoph Hellwig buf[3] = 0x3c; 44343bb95c7SNicholas Bellinger /* 44443bb95c7SNicholas Bellinger * Set GRD_CHK + REF_CHK for TYPE1 protection, or GRD_CHK 44543bb95c7SNicholas Bellinger * only for TYPE3 protection. 44643bb95c7SNicholas Bellinger */ 447d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 4489ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT || 4499ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE1_PROT) 45043bb95c7SNicholas Bellinger buf[4] = 0x5; 4519ef5466eSNicholas Bellinger else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT || 4529ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE3_PROT) 45343bb95c7SNicholas Bellinger buf[4] = 0x4; 454d2c5304cSNicholas Bellinger } 45543bb95c7SNicholas Bellinger 45627e6772bSSagi Grimberg /* logical unit supports type 1 and type 3 protection */ 4573aa3c67bSNicholas Bellinger if ((dev->transport->get_device_type(dev) == TYPE_DISK) && 4583aa3c67bSNicholas Bellinger (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) && 4593aa3c67bSNicholas Bellinger (dev->dev_attrib.pi_prot_type || cmd->se_sess->sess_prot_type)) { 46027e6772bSSagi Grimberg buf[4] |= (0x3 << 3); 4613aa3c67bSNicholas Bellinger } 46227e6772bSSagi Grimberg 4631fd032eeSChristoph Hellwig /* Set HEADSUP, ORDSUP, SIMPSUP */ 4641fd032eeSChristoph Hellwig buf[5] = 0x07; 4651fd032eeSChristoph Hellwig 4661fd032eeSChristoph Hellwig /* If WriteCache emulation is enabled, set V_SUP */ 467814e5b45SChristoph Hellwig if (target_check_wce(dev)) 4681fd032eeSChristoph Hellwig buf[6] = 0x01; 469c66094bfSHannes Reinecke /* If an LBA map is present set R_SUP */ 470c66094bfSHannes Reinecke spin_lock(&cmd->se_dev->t10_alua.lba_map_lock); 471c66094bfSHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 472c66094bfSHannes Reinecke buf[8] = 0x10; 473c66094bfSHannes Reinecke spin_unlock(&cmd->se_dev->t10_alua.lba_map_lock); 4741fd032eeSChristoph Hellwig return 0; 4751fd032eeSChristoph Hellwig } 4761fd032eeSChristoph Hellwig 4771fd032eeSChristoph Hellwig /* Block Limits VPD page */ 478de103c93SChristoph Hellwig static sense_reason_t 479de103c93SChristoph Hellwig spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 4801fd032eeSChristoph Hellwig { 4811fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 4828f9b5654SNicholas Bellinger u32 mtl = 0; 4838f9b5654SNicholas Bellinger int have_tp = 0, opt, min; 4841fd032eeSChristoph Hellwig 4851fd032eeSChristoph Hellwig /* 4861fd032eeSChristoph Hellwig * Following spc3r22 section 6.5.3 Block Limits VPD page, when 4871fd032eeSChristoph Hellwig * emulate_tpu=1 or emulate_tpws=1 we will be expect a 4881fd032eeSChristoph Hellwig * different page length for Thin Provisioning. 4891fd032eeSChristoph Hellwig */ 4900fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws) 4911fd032eeSChristoph Hellwig have_tp = 1; 4921fd032eeSChristoph Hellwig 4931fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 4941fd032eeSChristoph Hellwig buf[3] = have_tp ? 0x3c : 0x10; 4951fd032eeSChristoph Hellwig 4961fd032eeSChristoph Hellwig /* Set WSNZ to 1 */ 4971fd032eeSChristoph Hellwig buf[4] = 0x01; 4980123a9ecSNicholas Bellinger /* 4990123a9ecSNicholas Bellinger * Set MAXIMUM COMPARE AND WRITE LENGTH 5000123a9ecSNicholas Bellinger */ 5010123a9ecSNicholas Bellinger if (dev->dev_attrib.emulate_caw) 5020123a9ecSNicholas Bellinger buf[5] = 0x01; 5031fd032eeSChristoph Hellwig 5041fd032eeSChristoph Hellwig /* 5051fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH GRANULARITY 5061fd032eeSChristoph Hellwig */ 5077f7caf6aSAndy Grover if (dev->transport->get_io_min && (min = dev->transport->get_io_min(dev))) 5087f7caf6aSAndy Grover put_unaligned_be16(min / dev->dev_attrib.block_size, &buf[6]); 5097f7caf6aSAndy Grover else 5101fd032eeSChristoph Hellwig put_unaligned_be16(1, &buf[6]); 5111fd032eeSChristoph Hellwig 5121fd032eeSChristoph Hellwig /* 5131fd032eeSChristoph Hellwig * Set MAXIMUM TRANSFER LENGTH 5148f9b5654SNicholas Bellinger * 5158f9b5654SNicholas Bellinger * XXX: Currently assumes single PAGE_SIZE per scatterlist for fabrics 5168f9b5654SNicholas Bellinger * enforcing maximum HW scatter-gather-list entry limit 5171fd032eeSChristoph Hellwig */ 5188f9b5654SNicholas Bellinger if (cmd->se_tfo->max_data_sg_nents) { 5198f9b5654SNicholas Bellinger mtl = (cmd->se_tfo->max_data_sg_nents * PAGE_SIZE) / 5208f9b5654SNicholas Bellinger dev->dev_attrib.block_size; 5218f9b5654SNicholas Bellinger } 5228f9b5654SNicholas Bellinger put_unaligned_be32(min_not_zero(mtl, dev->dev_attrib.hw_max_sectors), &buf[8]); 5231fd032eeSChristoph Hellwig 5241fd032eeSChristoph Hellwig /* 5251fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH 5261fd032eeSChristoph Hellwig */ 5277f7caf6aSAndy Grover if (dev->transport->get_io_opt && (opt = dev->transport->get_io_opt(dev))) 5287f7caf6aSAndy Grover put_unaligned_be32(opt / dev->dev_attrib.block_size, &buf[12]); 5297f7caf6aSAndy Grover else 5300fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]); 5311fd032eeSChristoph Hellwig 5321fd032eeSChristoph Hellwig /* 5331fd032eeSChristoph Hellwig * Exit now if we don't support TP. 5341fd032eeSChristoph Hellwig */ 5351fd032eeSChristoph Hellwig if (!have_tp) 536773cbaf7SNicholas Bellinger goto max_write_same; 5371fd032eeSChristoph Hellwig 5381fd032eeSChristoph Hellwig /* 5391fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP LBA COUNT 5401fd032eeSChristoph Hellwig */ 5410fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_lba_count, &buf[20]); 5421fd032eeSChristoph Hellwig 5431fd032eeSChristoph Hellwig /* 5441fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 5451fd032eeSChristoph Hellwig */ 5460fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_block_desc_count, 5471fd032eeSChristoph Hellwig &buf[24]); 5481fd032eeSChristoph Hellwig 5491fd032eeSChristoph Hellwig /* 5501fd032eeSChristoph Hellwig * Set OPTIMAL UNMAP GRANULARITY 5511fd032eeSChristoph Hellwig */ 5520fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity, &buf[28]); 5531fd032eeSChristoph Hellwig 5541fd032eeSChristoph Hellwig /* 5551fd032eeSChristoph Hellwig * UNMAP GRANULARITY ALIGNMENT 5561fd032eeSChristoph Hellwig */ 5570fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity_alignment, 5581fd032eeSChristoph Hellwig &buf[32]); 5590fd97ccfSChristoph Hellwig if (dev->dev_attrib.unmap_granularity_alignment != 0) 5601fd032eeSChristoph Hellwig buf[32] |= 0x80; /* Set the UGAVALID bit */ 5611fd032eeSChristoph Hellwig 562773cbaf7SNicholas Bellinger /* 563773cbaf7SNicholas Bellinger * MAXIMUM WRITE SAME LENGTH 564773cbaf7SNicholas Bellinger */ 565773cbaf7SNicholas Bellinger max_write_same: 566773cbaf7SNicholas Bellinger put_unaligned_be64(dev->dev_attrib.max_write_same_len, &buf[36]); 567773cbaf7SNicholas Bellinger 5681fd032eeSChristoph Hellwig return 0; 5691fd032eeSChristoph Hellwig } 5701fd032eeSChristoph Hellwig 5711fd032eeSChristoph Hellwig /* Block Device Characteristics VPD page */ 572de103c93SChristoph Hellwig static sense_reason_t 573de103c93SChristoph Hellwig spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 5741fd032eeSChristoph Hellwig { 5751fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5761fd032eeSChristoph Hellwig 5771fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5781fd032eeSChristoph Hellwig buf[3] = 0x3c; 5790fd97ccfSChristoph Hellwig buf[5] = dev->dev_attrib.is_nonrot ? 1 : 0; 5801fd032eeSChristoph Hellwig 5811fd032eeSChristoph Hellwig return 0; 5821fd032eeSChristoph Hellwig } 5831fd032eeSChristoph Hellwig 5841fd032eeSChristoph Hellwig /* Thin Provisioning VPD */ 585de103c93SChristoph Hellwig static sense_reason_t 586de103c93SChristoph Hellwig spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 5871fd032eeSChristoph Hellwig { 5881fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5891fd032eeSChristoph Hellwig 5901fd032eeSChristoph Hellwig /* 5911fd032eeSChristoph Hellwig * From spc3r22 section 6.5.4 Thin Provisioning VPD page: 5921fd032eeSChristoph Hellwig * 5931fd032eeSChristoph Hellwig * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 5941fd032eeSChristoph Hellwig * zero, then the page length shall be set to 0004h. If the DP bit 5951fd032eeSChristoph Hellwig * is set to one, then the page length shall be set to the value 5961fd032eeSChristoph Hellwig * defined in table 162. 5971fd032eeSChristoph Hellwig */ 5981fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5991fd032eeSChristoph Hellwig 6001fd032eeSChristoph Hellwig /* 6011fd032eeSChristoph Hellwig * Set Hardcoded length mentioned above for DP=0 6021fd032eeSChristoph Hellwig */ 6031fd032eeSChristoph Hellwig put_unaligned_be16(0x0004, &buf[2]); 6041fd032eeSChristoph Hellwig 6051fd032eeSChristoph Hellwig /* 6061fd032eeSChristoph Hellwig * The THRESHOLD EXPONENT field indicates the threshold set size in 6071fd032eeSChristoph Hellwig * LBAs as a power of 2 (i.e., the threshold set size is equal to 6081fd032eeSChristoph Hellwig * 2(threshold exponent)). 6091fd032eeSChristoph Hellwig * 6101fd032eeSChristoph Hellwig * Note that this is currently set to 0x00 as mkp says it will be 6111fd032eeSChristoph Hellwig * changing again. We can enable this once it has settled in T10 6121fd032eeSChristoph Hellwig * and is actually used by Linux/SCSI ML code. 6131fd032eeSChristoph Hellwig */ 6141fd032eeSChristoph Hellwig buf[4] = 0x00; 6151fd032eeSChristoph Hellwig 6161fd032eeSChristoph Hellwig /* 6171fd032eeSChristoph Hellwig * A TPU bit set to one indicates that the device server supports 6181fd032eeSChristoph Hellwig * the UNMAP command (see 5.25). A TPU bit set to zero indicates 6191fd032eeSChristoph Hellwig * that the device server does not support the UNMAP command. 6201fd032eeSChristoph Hellwig */ 6210fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu != 0) 6221fd032eeSChristoph Hellwig buf[5] = 0x80; 6231fd032eeSChristoph Hellwig 6241fd032eeSChristoph Hellwig /* 6251fd032eeSChristoph Hellwig * A TPWS bit set to one indicates that the device server supports 6261fd032eeSChristoph Hellwig * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 6271fd032eeSChristoph Hellwig * A TPWS bit set to zero indicates that the device server does not 6281fd032eeSChristoph Hellwig * support the use of the WRITE SAME (16) command to unmap LBAs. 6291fd032eeSChristoph Hellwig */ 6300fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpws != 0) 631aa04dae4SNicholas Bellinger buf[5] |= 0x40 | 0x20; 6321fd032eeSChristoph Hellwig 633e6f41633SJamie Pocas /* 634e6f41633SJamie Pocas * The unmap_zeroes_data set means that the underlying device supports 6359305455aSBart Van Assche * REQ_OP_DISCARD and has the discard_zeroes_data bit set. This 6369305455aSBart Van Assche * satisfies the SBC requirements for LBPRZ, meaning that a subsequent 6379305455aSBart Van Assche * read will return zeroes after an UNMAP or WRITE SAME (16) to an LBA 638e6f41633SJamie Pocas * See sbc4r36 6.6.4. 639e6f41633SJamie Pocas */ 640e6f41633SJamie Pocas if (((dev->dev_attrib.emulate_tpu != 0) || 641e6f41633SJamie Pocas (dev->dev_attrib.emulate_tpws != 0)) && 642e6f41633SJamie Pocas (dev->dev_attrib.unmap_zeroes_data != 0)) 643e6f41633SJamie Pocas buf[5] |= 0x04; 644e6f41633SJamie Pocas 6451fd032eeSChristoph Hellwig return 0; 6461fd032eeSChristoph Hellwig } 6471fd032eeSChristoph Hellwig 648c66094bfSHannes Reinecke /* Referrals VPD page */ 649c66094bfSHannes Reinecke static sense_reason_t 650c66094bfSHannes Reinecke spc_emulate_evpd_b3(struct se_cmd *cmd, unsigned char *buf) 651c66094bfSHannes Reinecke { 652c66094bfSHannes Reinecke struct se_device *dev = cmd->se_dev; 653c66094bfSHannes Reinecke 654c66094bfSHannes Reinecke buf[0] = dev->transport->get_device_type(dev); 655c66094bfSHannes Reinecke buf[3] = 0x0c; 656c66094bfSHannes Reinecke put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[8]); 657096b4995SSebastian Herbszt put_unaligned_be32(dev->t10_alua.lba_map_segment_multiplier, &buf[12]); 658c66094bfSHannes Reinecke 659c66094bfSHannes Reinecke return 0; 660c66094bfSHannes Reinecke } 661c66094bfSHannes Reinecke 662de103c93SChristoph Hellwig static sense_reason_t 663de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 6641fd032eeSChristoph Hellwig 6651fd032eeSChristoph Hellwig static struct { 6661fd032eeSChristoph Hellwig uint8_t page; 667de103c93SChristoph Hellwig sense_reason_t (*emulate)(struct se_cmd *, unsigned char *); 6681fd032eeSChristoph Hellwig } evpd_handlers[] = { 6691fd032eeSChristoph Hellwig { .page = 0x00, .emulate = spc_emulate_evpd_00 }, 6701fd032eeSChristoph Hellwig { .page = 0x80, .emulate = spc_emulate_evpd_80 }, 6711fd032eeSChristoph Hellwig { .page = 0x83, .emulate = spc_emulate_evpd_83 }, 6721fd032eeSChristoph Hellwig { .page = 0x86, .emulate = spc_emulate_evpd_86 }, 6731fd032eeSChristoph Hellwig { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, 6741fd032eeSChristoph Hellwig { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, 6751fd032eeSChristoph Hellwig { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, 676c66094bfSHannes Reinecke { .page = 0xb3, .emulate = spc_emulate_evpd_b3 }, 6771fd032eeSChristoph Hellwig }; 6781fd032eeSChristoph Hellwig 6791fd032eeSChristoph Hellwig /* supported vital product data pages */ 680de103c93SChristoph Hellwig static sense_reason_t 681de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 6821fd032eeSChristoph Hellwig { 6831fd032eeSChristoph Hellwig int p; 6841fd032eeSChristoph Hellwig 6851fd032eeSChristoph Hellwig /* 6861fd032eeSChristoph Hellwig * Only report the INQUIRY EVPD=1 pages after a valid NAA 6871fd032eeSChristoph Hellwig * Registered Extended LUN WWN has been set via ConfigFS 6881fd032eeSChristoph Hellwig * during device creation/restart. 6891fd032eeSChristoph Hellwig */ 6900fd97ccfSChristoph Hellwig if (cmd->se_dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 6911fd032eeSChristoph Hellwig buf[3] = ARRAY_SIZE(evpd_handlers); 6921fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) 6931fd032eeSChristoph Hellwig buf[p + 4] = evpd_handlers[p].page; 6941fd032eeSChristoph Hellwig } 6951fd032eeSChristoph Hellwig 6961fd032eeSChristoph Hellwig return 0; 6971fd032eeSChristoph Hellwig } 6981fd032eeSChristoph Hellwig 699de103c93SChristoph Hellwig static sense_reason_t 700de103c93SChristoph Hellwig spc_emulate_inquiry(struct se_cmd *cmd) 7011fd032eeSChristoph Hellwig { 7021fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 703ffe7b0e9SPaolo Bonzini unsigned char *rbuf; 7041fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 705f82f320eSNicholas Bellinger unsigned char *buf; 706de103c93SChristoph Hellwig sense_reason_t ret; 707de103c93SChristoph Hellwig int p; 7082426bd45SRoland Dreier int len = 0; 7091fd032eeSChristoph Hellwig 710f82f320eSNicholas Bellinger buf = kzalloc(SE_INQUIRY_BUF, GFP_KERNEL); 711f82f320eSNicholas Bellinger if (!buf) { 712f82f320eSNicholas Bellinger pr_err("Unable to allocate response buffer for INQUIRY\n"); 713f82f320eSNicholas Bellinger return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 714f82f320eSNicholas Bellinger } 715dea5f099SNicholas Bellinger 7161fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 7171fd032eeSChristoph Hellwig 7181fd032eeSChristoph Hellwig if (!(cdb[1] & 0x1)) { 7191fd032eeSChristoph Hellwig if (cdb[2]) { 7201fd032eeSChristoph Hellwig pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", 7211fd032eeSChristoph Hellwig cdb[2]); 722de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7231fd032eeSChristoph Hellwig goto out; 7241fd032eeSChristoph Hellwig } 7251fd032eeSChristoph Hellwig 7261fd032eeSChristoph Hellwig ret = spc_emulate_inquiry_std(cmd, buf); 7272426bd45SRoland Dreier len = buf[4] + 5; 7281fd032eeSChristoph Hellwig goto out; 7291fd032eeSChristoph Hellwig } 7301fd032eeSChristoph Hellwig 7311fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 7321fd032eeSChristoph Hellwig if (cdb[2] == evpd_handlers[p].page) { 7331fd032eeSChristoph Hellwig buf[1] = cdb[2]; 7341fd032eeSChristoph Hellwig ret = evpd_handlers[p].emulate(cmd, buf); 7352426bd45SRoland Dreier len = get_unaligned_be16(&buf[2]) + 4; 7361fd032eeSChristoph Hellwig goto out; 7371fd032eeSChristoph Hellwig } 7381fd032eeSChristoph Hellwig } 7391fd032eeSChristoph Hellwig 7401fd032eeSChristoph Hellwig pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 741de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7421fd032eeSChristoph Hellwig 7431fd032eeSChristoph Hellwig out: 744ffe7b0e9SPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 74549df9fc9SNicholas Bellinger if (rbuf) { 746f82f320eSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_INQUIRY_BUF, cmd->data_length)); 7471fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 74849df9fc9SNicholas Bellinger } 749f82f320eSNicholas Bellinger kfree(buf); 7501fd032eeSChristoph Hellwig 7511fd032eeSChristoph Hellwig if (!ret) 7522426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, len); 7531fd032eeSChristoph Hellwig return ret; 7541fd032eeSChristoph Hellwig } 7551fd032eeSChristoph Hellwig 756d45aca42SNicholas Bellinger static int spc_modesense_rwrecovery(struct se_cmd *cmd, u8 pc, u8 *p) 7571fd032eeSChristoph Hellwig { 7581fd032eeSChristoph Hellwig p[0] = 0x01; 7591fd032eeSChristoph Hellwig p[1] = 0x0a; 7601fd032eeSChristoph Hellwig 761d4b2b867SRoland Dreier /* No changeable values for now */ 762d4b2b867SRoland Dreier if (pc == 1) 763d4b2b867SRoland Dreier goto out; 764d4b2b867SRoland Dreier 765d4b2b867SRoland Dreier out: 7661fd032eeSChristoph Hellwig return 12; 7671fd032eeSChristoph Hellwig } 7681fd032eeSChristoph Hellwig 769d45aca42SNicholas Bellinger static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p) 7701fd032eeSChristoph Hellwig { 771d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 772d45aca42SNicholas Bellinger struct se_session *sess = cmd->se_sess; 773d45aca42SNicholas Bellinger 7741fd032eeSChristoph Hellwig p[0] = 0x0a; 7751fd032eeSChristoph Hellwig p[1] = 0x0a; 776d4b2b867SRoland Dreier 777d4b2b867SRoland Dreier /* No changeable values for now */ 778d4b2b867SRoland Dreier if (pc == 1) 779d4b2b867SRoland Dreier goto out; 780d4b2b867SRoland Dreier 7814e4937e8SSagi Grimberg /* GLTSD: No implicit save of log parameters */ 7824e4937e8SSagi Grimberg p[2] = (1 << 1); 7834e4937e8SSagi Grimberg if (target_sense_desc_format(dev)) 7844e4937e8SSagi Grimberg /* D_SENSE: Descriptor format sense data for 64bit sectors */ 7854e4937e8SSagi Grimberg p[2] |= (1 << 2); 7864e4937e8SSagi Grimberg 7871fd032eeSChristoph Hellwig /* 7881fd032eeSChristoph Hellwig * From spc4r23, 7.4.7 Control mode page 7891fd032eeSChristoph Hellwig * 7901fd032eeSChristoph Hellwig * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 7911fd032eeSChristoph Hellwig * restrictions on the algorithm used for reordering commands 7921fd032eeSChristoph Hellwig * having the SIMPLE task attribute (see SAM-4). 7931fd032eeSChristoph Hellwig * 7941fd032eeSChristoph Hellwig * Table 368 -- QUEUE ALGORITHM MODIFIER field 7951fd032eeSChristoph Hellwig * Code Description 7961fd032eeSChristoph Hellwig * 0h Restricted reordering 7971fd032eeSChristoph Hellwig * 1h Unrestricted reordering allowed 7981fd032eeSChristoph Hellwig * 2h to 7h Reserved 7991fd032eeSChristoph Hellwig * 8h to Fh Vendor specific 8001fd032eeSChristoph Hellwig * 8011fd032eeSChristoph Hellwig * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 8021fd032eeSChristoph Hellwig * the device server shall order the processing sequence of commands 8031fd032eeSChristoph Hellwig * having the SIMPLE task attribute such that data integrity is maintained 8041fd032eeSChristoph Hellwig * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 8051fd032eeSChristoph Hellwig * requests is halted at any time, the final value of all data observable 8061fd032eeSChristoph Hellwig * on the medium shall be the same as if all the commands had been processed 8071fd032eeSChristoph Hellwig * with the ORDERED task attribute). 8081fd032eeSChristoph Hellwig * 8091fd032eeSChristoph Hellwig * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 8101fd032eeSChristoph Hellwig * device server may reorder the processing sequence of commands having the 8111fd032eeSChristoph Hellwig * SIMPLE task attribute in any manner. Any data integrity exposures related to 8121fd032eeSChristoph Hellwig * command sequence order shall be explicitly handled by the application client 8131fd032eeSChristoph Hellwig * through the selection of appropriate ommands and task attributes. 8141fd032eeSChristoph Hellwig */ 8150fd97ccfSChristoph Hellwig p[3] = (dev->dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 8161fd032eeSChristoph Hellwig /* 8171fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8181fd032eeSChristoph Hellwig * 8191fd032eeSChristoph Hellwig * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 8201fd032eeSChristoph Hellwig * 8211fd032eeSChristoph Hellwig * 00b: The logical unit shall clear any unit attention condition 8221fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8231fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when a com- 8241fd032eeSChristoph Hellwig * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 8251fd032eeSChristoph Hellwig * status. 8261fd032eeSChristoph Hellwig * 8271fd032eeSChristoph Hellwig * 10b: The logical unit shall not clear any unit attention condition 8281fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8291fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when 8301fd032eeSChristoph Hellwig * a command is completed with BUSY, TASK SET FULL, or RESERVATION 8311fd032eeSChristoph Hellwig * CONFLICT status. 8321fd032eeSChristoph Hellwig * 8331fd032eeSChristoph Hellwig * 11b a The logical unit shall not clear any unit attention condition 8341fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8351fd032eeSChristoph Hellwig * status and shall establish a unit attention condition for the 8361fd032eeSChristoph Hellwig * initiator port associated with the I_T nexus on which the BUSY, 8371fd032eeSChristoph Hellwig * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 8381fd032eeSChristoph Hellwig * Depending on the status, the additional sense code shall be set to 8391fd032eeSChristoph Hellwig * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 8401fd032eeSChristoph Hellwig * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 8411fd032eeSChristoph Hellwig * command, a unit attention condition shall be established only once 8421fd032eeSChristoph Hellwig * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 8431fd032eeSChristoph Hellwig * to the number of commands completed with one of those status codes. 8441fd032eeSChristoph Hellwig */ 8451bf630fdSDavid Disseldorp switch (dev->dev_attrib.emulate_ua_intlck_ctrl) { 8461bf630fdSDavid Disseldorp case TARGET_UA_INTLCK_CTRL_ESTABLISH_UA: 8471bf630fdSDavid Disseldorp p[4] = 0x30; 8481bf630fdSDavid Disseldorp break; 8491bf630fdSDavid Disseldorp case TARGET_UA_INTLCK_CTRL_NO_CLEAR: 8501bf630fdSDavid Disseldorp p[4] = 0x20; 8511bf630fdSDavid Disseldorp break; 8521bf630fdSDavid Disseldorp default: /* TARGET_UA_INTLCK_CTRL_CLEAR */ 8531bf630fdSDavid Disseldorp p[4] = 0x00; 8541bf630fdSDavid Disseldorp break; 8551bf630fdSDavid Disseldorp } 8561fd032eeSChristoph Hellwig /* 8571fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8581fd032eeSChristoph Hellwig * 8591fd032eeSChristoph Hellwig * Task Aborted Status (TAS) bit set to zero. 8601fd032eeSChristoph Hellwig * 8611fd032eeSChristoph Hellwig * A task aborted status (TAS) bit set to zero specifies that aborted 8621fd032eeSChristoph Hellwig * tasks shall be terminated by the device server without any response 8631fd032eeSChristoph Hellwig * to the application client. A TAS bit set to one specifies that tasks 8641fd032eeSChristoph Hellwig * aborted by the actions of an I_T nexus other than the I_T nexus on 8651fd032eeSChristoph Hellwig * which the command was received shall be completed with TASK ABORTED 8661fd032eeSChristoph Hellwig * status (see SAM-4). 8671fd032eeSChristoph Hellwig */ 8680fd97ccfSChristoph Hellwig p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00; 8690c30f421SNicholas Bellinger /* 8700c30f421SNicholas Bellinger * From spc4r30, section 7.5.7 Control mode page 8710c30f421SNicholas Bellinger * 8720c30f421SNicholas Bellinger * Application Tag Owner (ATO) bit set to one. 8730c30f421SNicholas Bellinger * 8740c30f421SNicholas Bellinger * If the ATO bit is set to one the device server shall not modify the 8750c30f421SNicholas Bellinger * LOGICAL BLOCK APPLICATION TAG field and, depending on the protection 8760c30f421SNicholas Bellinger * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE 8770c30f421SNicholas Bellinger * TAG field. 8780c30f421SNicholas Bellinger */ 879d45aca42SNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 8809ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || sess->sess_prot_type) 8810c30f421SNicholas Bellinger p[5] |= 0x80; 882d45aca42SNicholas Bellinger } 8830c30f421SNicholas Bellinger 8841fd032eeSChristoph Hellwig p[8] = 0xff; 8851fd032eeSChristoph Hellwig p[9] = 0xff; 8861fd032eeSChristoph Hellwig p[11] = 30; 8871fd032eeSChristoph Hellwig 888d4b2b867SRoland Dreier out: 8891fd032eeSChristoph Hellwig return 12; 8901fd032eeSChristoph Hellwig } 8911fd032eeSChristoph Hellwig 892d45aca42SNicholas Bellinger static int spc_modesense_caching(struct se_cmd *cmd, u8 pc, u8 *p) 8931fd032eeSChristoph Hellwig { 894d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 895d45aca42SNicholas Bellinger 8961fd032eeSChristoph Hellwig p[0] = 0x08; 8971fd032eeSChristoph Hellwig p[1] = 0x12; 898d4b2b867SRoland Dreier 899d4b2b867SRoland Dreier /* No changeable values for now */ 900d4b2b867SRoland Dreier if (pc == 1) 901d4b2b867SRoland Dreier goto out; 902d4b2b867SRoland Dreier 903814e5b45SChristoph Hellwig if (target_check_wce(dev)) 9041fd032eeSChristoph Hellwig p[2] = 0x04; /* Write Cache Enable */ 9051fd032eeSChristoph Hellwig p[12] = 0x20; /* Disabled Read Ahead */ 9061fd032eeSChristoph Hellwig 907d4b2b867SRoland Dreier out: 9081fd032eeSChristoph Hellwig return 20; 9091fd032eeSChristoph Hellwig } 9101fd032eeSChristoph Hellwig 911d45aca42SNicholas Bellinger static int spc_modesense_informational_exceptions(struct se_cmd *cmd, u8 pc, unsigned char *p) 9120f6d64ceSRoland Dreier { 9130f6d64ceSRoland Dreier p[0] = 0x1c; 9140f6d64ceSRoland Dreier p[1] = 0x0a; 9150f6d64ceSRoland Dreier 9160f6d64ceSRoland Dreier /* No changeable values for now */ 9170f6d64ceSRoland Dreier if (pc == 1) 9180f6d64ceSRoland Dreier goto out; 9190f6d64ceSRoland Dreier 9200f6d64ceSRoland Dreier out: 9210f6d64ceSRoland Dreier return 12; 9220f6d64ceSRoland Dreier } 9230f6d64ceSRoland Dreier 924d4b2b867SRoland Dreier static struct { 925d4b2b867SRoland Dreier uint8_t page; 926d4b2b867SRoland Dreier uint8_t subpage; 927d45aca42SNicholas Bellinger int (*emulate)(struct se_cmd *, u8, unsigned char *); 928d4b2b867SRoland Dreier } modesense_handlers[] = { 929d4b2b867SRoland Dreier { .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery }, 930d4b2b867SRoland Dreier { .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching }, 931d4b2b867SRoland Dreier { .page = 0x0a, .subpage = 0x00, .emulate = spc_modesense_control }, 9320f6d64ceSRoland Dreier { .page = 0x1c, .subpage = 0x00, .emulate = spc_modesense_informational_exceptions }, 933d4b2b867SRoland Dreier }; 934d4b2b867SRoland Dreier 9351fd032eeSChristoph Hellwig static void spc_modesense_write_protect(unsigned char *buf, int type) 9361fd032eeSChristoph Hellwig { 9371fd032eeSChristoph Hellwig /* 9381fd032eeSChristoph Hellwig * I believe that the WP bit (bit 7) in the mode header is the same for 9391fd032eeSChristoph Hellwig * all device types.. 9401fd032eeSChristoph Hellwig */ 9411fd032eeSChristoph Hellwig switch (type) { 9421fd032eeSChristoph Hellwig case TYPE_DISK: 9431fd032eeSChristoph Hellwig case TYPE_TAPE: 9441fd032eeSChristoph Hellwig default: 9451fd032eeSChristoph Hellwig buf[0] |= 0x80; /* WP bit */ 9461fd032eeSChristoph Hellwig break; 9471fd032eeSChristoph Hellwig } 9481fd032eeSChristoph Hellwig } 9491fd032eeSChristoph Hellwig 9501fd032eeSChristoph Hellwig static void spc_modesense_dpofua(unsigned char *buf, int type) 9511fd032eeSChristoph Hellwig { 9521fd032eeSChristoph Hellwig switch (type) { 9531fd032eeSChristoph Hellwig case TYPE_DISK: 9541fd032eeSChristoph Hellwig buf[0] |= 0x10; /* DPOFUA bit */ 9551fd032eeSChristoph Hellwig break; 9561fd032eeSChristoph Hellwig default: 9571fd032eeSChristoph Hellwig break; 9581fd032eeSChristoph Hellwig } 9591fd032eeSChristoph Hellwig } 9601fd032eeSChristoph Hellwig 961d4b2b867SRoland Dreier static int spc_modesense_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 962d4b2b867SRoland Dreier { 963d4b2b867SRoland Dreier *buf++ = 8; 964d4b2b867SRoland Dreier put_unaligned_be32(min(blocks, 0xffffffffull), buf); 965d4b2b867SRoland Dreier buf += 4; 966d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 967d4b2b867SRoland Dreier return 9; 968d4b2b867SRoland Dreier } 969d4b2b867SRoland Dreier 970d4b2b867SRoland Dreier static int spc_modesense_long_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 971d4b2b867SRoland Dreier { 972d4b2b867SRoland Dreier if (blocks <= 0xffffffff) 973d4b2b867SRoland Dreier return spc_modesense_blockdesc(buf + 3, blocks, block_size) + 3; 974d4b2b867SRoland Dreier 975d4b2b867SRoland Dreier *buf++ = 1; /* LONGLBA */ 976d4b2b867SRoland Dreier buf += 2; 977d4b2b867SRoland Dreier *buf++ = 16; 978d4b2b867SRoland Dreier put_unaligned_be64(blocks, buf); 979d4b2b867SRoland Dreier buf += 12; 980d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 981d4b2b867SRoland Dreier 982d4b2b867SRoland Dreier return 17; 983d4b2b867SRoland Dreier } 984d4b2b867SRoland Dreier 985de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) 9861fd032eeSChristoph Hellwig { 9871fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 9881fd032eeSChristoph Hellwig char *cdb = cmd->t_task_cdb; 989cab9609bSNicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF], *rbuf; 9901fd032eeSChristoph Hellwig int type = dev->transport->get_device_type(dev); 9911fd032eeSChristoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 992d4b2b867SRoland Dreier bool dbd = !!(cdb[1] & 0x08); 993d4b2b867SRoland Dreier bool llba = ten ? !!(cdb[1] & 0x10) : false; 994d4b2b867SRoland Dreier u8 pc = cdb[2] >> 6; 995d4b2b867SRoland Dreier u8 page = cdb[2] & 0x3f; 996d4b2b867SRoland Dreier u8 subpage = cdb[3]; 9971fd032eeSChristoph Hellwig int length = 0; 998d4b2b867SRoland Dreier int ret; 999d4b2b867SRoland Dreier int i; 10001fd032eeSChristoph Hellwig 1001cab9609bSNicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 1002cab9609bSNicholas Bellinger 1003fecae40aSNicholas Bellinger /* 1004fecae40aSNicholas Bellinger * Skip over MODE DATA LENGTH + MEDIUM TYPE fields to byte 3 for 1005fecae40aSNicholas Bellinger * MODE_SENSE_10 and byte 2 for MODE_SENSE (6). 1006fecae40aSNicholas Bellinger */ 1007fecae40aSNicholas Bellinger length = ten ? 3 : 2; 1008d4b2b867SRoland Dreier 1009d4b2b867SRoland Dreier /* DEVICE-SPECIFIC PARAMETER */ 101003a68b44SAndy Grover if (cmd->se_lun->lun_access_ro || target_lun_is_rdonly(cmd)) 1011d4b2b867SRoland Dreier spc_modesense_write_protect(&buf[length], type); 1012d4b2b867SRoland Dreier 1013814e5b45SChristoph Hellwig /* 1014814e5b45SChristoph Hellwig * SBC only allows us to enable FUA and DPO together. Fortunately 1015814e5b45SChristoph Hellwig * DPO is explicitly specified as a hint, so a noop is a perfectly 1016814e5b45SChristoph Hellwig * valid implementation. 1017814e5b45SChristoph Hellwig */ 1018814e5b45SChristoph Hellwig if (target_check_fua(dev)) 1019d4b2b867SRoland Dreier spc_modesense_dpofua(&buf[length], type); 1020d4b2b867SRoland Dreier 1021d4b2b867SRoland Dreier ++length; 1022d4b2b867SRoland Dreier 1023d4b2b867SRoland Dreier /* BLOCK DESCRIPTOR */ 1024d4b2b867SRoland Dreier 1025d4b2b867SRoland Dreier /* 1026d4b2b867SRoland Dreier * For now we only include a block descriptor for disk (SBC) 1027d4b2b867SRoland Dreier * devices; other command sets use a slightly different format. 1028d4b2b867SRoland Dreier */ 1029d4b2b867SRoland Dreier if (!dbd && type == TYPE_DISK) { 1030d4b2b867SRoland Dreier u64 blocks = dev->transport->get_blocks(dev); 1031d4b2b867SRoland Dreier u32 block_size = dev->dev_attrib.block_size; 10321fd032eeSChristoph Hellwig 10331fd032eeSChristoph Hellwig if (ten) { 1034d4b2b867SRoland Dreier if (llba) { 1035d4b2b867SRoland Dreier length += spc_modesense_long_blockdesc(&buf[length], 1036d4b2b867SRoland Dreier blocks, block_size); 10371fd032eeSChristoph Hellwig } else { 1038d4b2b867SRoland Dreier length += 3; 1039d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], 1040d4b2b867SRoland Dreier blocks, block_size); 1041d4b2b867SRoland Dreier } 1042d4b2b867SRoland Dreier } else { 1043d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], blocks, 1044d4b2b867SRoland Dreier block_size); 1045d4b2b867SRoland Dreier } 1046d4b2b867SRoland Dreier } else { 1047d4b2b867SRoland Dreier if (ten) 1048d4b2b867SRoland Dreier length += 4; 1049d4b2b867SRoland Dreier else 1050d4b2b867SRoland Dreier length += 1; 10511fd032eeSChristoph Hellwig } 10521fd032eeSChristoph Hellwig 1053d4b2b867SRoland Dreier if (page == 0x3f) { 1054d4b2b867SRoland Dreier if (subpage != 0x00 && subpage != 0xff) { 1055de103c93SChristoph Hellwig pr_warn("MODE_SENSE: Invalid subpage code: 0x%02x\n", subpage); 1056de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 1057d4b2b867SRoland Dreier } 1058d4b2b867SRoland Dreier 1059d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) { 1060d4b2b867SRoland Dreier /* 1061d4b2b867SRoland Dreier * Tricky way to say all subpage 00h for 1062d4b2b867SRoland Dreier * subpage==0, all subpages for subpage==0xff 1063d4b2b867SRoland Dreier * (and we just checked above that those are 1064d4b2b867SRoland Dreier * the only two possibilities). 1065d4b2b867SRoland Dreier */ 1066d4b2b867SRoland Dreier if ((modesense_handlers[i].subpage & ~subpage) == 0) { 1067d45aca42SNicholas Bellinger ret = modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1068d4b2b867SRoland Dreier if (!ten && length + ret >= 255) 1069d4b2b867SRoland Dreier break; 1070d4b2b867SRoland Dreier length += ret; 1071d4b2b867SRoland Dreier } 1072d4b2b867SRoland Dreier } 1073d4b2b867SRoland Dreier 1074d4b2b867SRoland Dreier goto set_length; 1075d4b2b867SRoland Dreier } 1076d4b2b867SRoland Dreier 1077d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 1078d4b2b867SRoland Dreier if (modesense_handlers[i].page == page && 1079d4b2b867SRoland Dreier modesense_handlers[i].subpage == subpage) { 1080d45aca42SNicholas Bellinger length += modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1081d4b2b867SRoland Dreier goto set_length; 1082d4b2b867SRoland Dreier } 1083d4b2b867SRoland Dreier 1084d4b2b867SRoland Dreier /* 1085d4b2b867SRoland Dreier * We don't intend to implement: 1086d4b2b867SRoland Dreier * - obsolete page 03h "format parameters" (checked by Solaris) 1087d4b2b867SRoland Dreier */ 1088d4b2b867SRoland Dreier if (page != 0x03) 1089d4b2b867SRoland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 1090d4b2b867SRoland Dreier page, subpage); 1091d4b2b867SRoland Dreier 1092de103c93SChristoph Hellwig return TCM_UNKNOWN_MODE_PAGE; 1093d4b2b867SRoland Dreier 1094d4b2b867SRoland Dreier set_length: 1095d4b2b867SRoland Dreier if (ten) 1096d4b2b867SRoland Dreier put_unaligned_be16(length - 2, buf); 1097d4b2b867SRoland Dreier else 1098d4b2b867SRoland Dreier buf[0] = length - 1; 1099d4b2b867SRoland Dreier 1100cab9609bSNicholas Bellinger rbuf = transport_kmap_data_sg(cmd); 1101cab9609bSNicholas Bellinger if (rbuf) { 1102cab9609bSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_MODE_PAGE_BUF, cmd->data_length)); 1103cab9609bSNicholas Bellinger transport_kunmap_data_sg(cmd); 1104d4b2b867SRoland Dreier } 1105d4b2b867SRoland Dreier 11062426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, length); 11071fd032eeSChristoph Hellwig return 0; 11081fd032eeSChristoph Hellwig } 11091fd032eeSChristoph Hellwig 1110de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) 11113a3c5e4aSRoland Dreier { 11123a3c5e4aSRoland Dreier char *cdb = cmd->t_task_cdb; 11133a3c5e4aSRoland Dreier bool ten = cdb[0] == MODE_SELECT_10; 11143a3c5e4aSRoland Dreier int off = ten ? 8 : 4; 11153a3c5e4aSRoland Dreier bool pf = !!(cdb[1] & 0x10); 11163a3c5e4aSRoland Dreier u8 page, subpage; 11173a3c5e4aSRoland Dreier unsigned char *buf; 11183a3c5e4aSRoland Dreier unsigned char tbuf[SE_MODE_PAGE_BUF]; 11193a3c5e4aSRoland Dreier int length; 11203abff1e5SChristoph Hellwig sense_reason_t ret = 0; 11213a3c5e4aSRoland Dreier int i; 11223a3c5e4aSRoland Dreier 112371f41fe1SRoland Dreier if (!cmd->data_length) { 112471f41fe1SRoland Dreier target_complete_cmd(cmd, GOOD); 112571f41fe1SRoland Dreier return 0; 112671f41fe1SRoland Dreier } 112771f41fe1SRoland Dreier 112871f41fe1SRoland Dreier if (cmd->data_length < off + 2) 112971f41fe1SRoland Dreier return TCM_PARAMETER_LIST_LENGTH_ERROR; 113071f41fe1SRoland Dreier 11313a3c5e4aSRoland Dreier buf = transport_kmap_data_sg(cmd); 1132de103c93SChristoph Hellwig if (!buf) 1133de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 11343a3c5e4aSRoland Dreier 11353a3c5e4aSRoland Dreier if (!pf) { 1136de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 11373a3c5e4aSRoland Dreier goto out; 11383a3c5e4aSRoland Dreier } 11393a3c5e4aSRoland Dreier 11403a3c5e4aSRoland Dreier page = buf[off] & 0x3f; 11413a3c5e4aSRoland Dreier subpage = buf[off] & 0x40 ? buf[off + 1] : 0; 11423a3c5e4aSRoland Dreier 11433a3c5e4aSRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 11443a3c5e4aSRoland Dreier if (modesense_handlers[i].page == page && 11453a3c5e4aSRoland Dreier modesense_handlers[i].subpage == subpage) { 11463a3c5e4aSRoland Dreier memset(tbuf, 0, SE_MODE_PAGE_BUF); 1147d45aca42SNicholas Bellinger length = modesense_handlers[i].emulate(cmd, 0, tbuf); 11483a3c5e4aSRoland Dreier goto check_contents; 11493a3c5e4aSRoland Dreier } 11503a3c5e4aSRoland Dreier 1151de103c93SChristoph Hellwig ret = TCM_UNKNOWN_MODE_PAGE; 11523a3c5e4aSRoland Dreier goto out; 11533a3c5e4aSRoland Dreier 11543a3c5e4aSRoland Dreier check_contents: 115571f41fe1SRoland Dreier if (cmd->data_length < off + length) { 115671f41fe1SRoland Dreier ret = TCM_PARAMETER_LIST_LENGTH_ERROR; 115771f41fe1SRoland Dreier goto out; 115871f41fe1SRoland Dreier } 115971f41fe1SRoland Dreier 1160de103c93SChristoph Hellwig if (memcmp(buf + off, tbuf, length)) 1161de103c93SChristoph Hellwig ret = TCM_INVALID_PARAMETER_LIST; 11623a3c5e4aSRoland Dreier 11633a3c5e4aSRoland Dreier out: 11643a3c5e4aSRoland Dreier transport_kunmap_data_sg(cmd); 11653a3c5e4aSRoland Dreier 11663a3c5e4aSRoland Dreier if (!ret) 11673a3c5e4aSRoland Dreier target_complete_cmd(cmd, GOOD); 11683a3c5e4aSRoland Dreier return ret; 11693a3c5e4aSRoland Dreier } 11703a3c5e4aSRoland Dreier 1171de103c93SChristoph Hellwig static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd) 11721fd032eeSChristoph Hellwig { 11731fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 117432a8811fSPaolo Bonzini unsigned char *rbuf; 11751fd032eeSChristoph Hellwig u8 ua_asc = 0, ua_ascq = 0; 117632a8811fSPaolo Bonzini unsigned char buf[SE_SENSE_BUF]; 11774e4937e8SSagi Grimberg bool desc_format = target_sense_desc_format(cmd->se_dev); 117832a8811fSPaolo Bonzini 117932a8811fSPaolo Bonzini memset(buf, 0, SE_SENSE_BUF); 11801fd032eeSChristoph Hellwig 11811fd032eeSChristoph Hellwig if (cdb[1] & 0x01) { 11821fd032eeSChristoph Hellwig pr_err("REQUEST_SENSE description emulation not" 11831fd032eeSChristoph Hellwig " supported\n"); 1184de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 11851fd032eeSChristoph Hellwig } 11861fd032eeSChristoph Hellwig 118732a8811fSPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 1188de103c93SChristoph Hellwig if (!rbuf) 1189de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1190de103c93SChristoph Hellwig 11919ec1e1ceSSagi Grimberg if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) 11924e4937e8SSagi Grimberg scsi_build_sense_buffer(desc_format, buf, UNIT_ATTENTION, 11939ec1e1ceSSagi Grimberg ua_asc, ua_ascq); 11949ec1e1ceSSagi Grimberg else 11954e4937e8SSagi Grimberg scsi_build_sense_buffer(desc_format, buf, NO_SENSE, 0x0, 0x0); 11961fd032eeSChristoph Hellwig 119732a8811fSPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 11981fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 119932a8811fSPaolo Bonzini 12001fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 12011fd032eeSChristoph Hellwig return 0; 12021fd032eeSChristoph Hellwig } 12031fd032eeSChristoph Hellwig 1204de103c93SChristoph Hellwig sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd) 1205d1b1f805SChristoph Hellwig { 1206d1b1f805SChristoph Hellwig struct se_dev_entry *deve; 1207d1b1f805SChristoph Hellwig struct se_session *sess = cmd->se_sess; 120829a05deeSNicholas Bellinger struct se_node_acl *nacl; 12090f69a387SRoland Dreier struct scsi_lun slun; 1210d1b1f805SChristoph Hellwig unsigned char *buf; 121129a05deeSNicholas Bellinger u32 lun_count = 0, offset = 8; 12120f69a387SRoland Dreier __be32 len; 1213d1b1f805SChristoph Hellwig 1214d1b1f805SChristoph Hellwig buf = transport_kmap_data_sg(cmd); 12150f69a387SRoland Dreier if (cmd->data_length && !buf) 1216de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1217d1b1f805SChristoph Hellwig 1218d1b1f805SChristoph Hellwig /* 1219d1b1f805SChristoph Hellwig * If no struct se_session pointer is present, this struct se_cmd is 1220d1b1f805SChristoph Hellwig * coming via a target_core_mod PASSTHROUGH op, and not through 1221d1b1f805SChristoph Hellwig * a $FABRIC_MOD. In that case, report LUN=0 only. 1222d1b1f805SChristoph Hellwig */ 12239c395170SRoland Dreier if (!sess) 1224d1b1f805SChristoph Hellwig goto done; 12259c395170SRoland Dreier 122629a05deeSNicholas Bellinger nacl = sess->se_node_acl; 1227d1b1f805SChristoph Hellwig 122829a05deeSNicholas Bellinger rcu_read_lock(); 122929a05deeSNicholas Bellinger hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { 1230d1b1f805SChristoph Hellwig /* 1231d1b1f805SChristoph Hellwig * We determine the correct LUN LIST LENGTH even once we 1232d1b1f805SChristoph Hellwig * have reached the initial allocation length. 1233d1b1f805SChristoph Hellwig * See SPC2-R20 7.19. 1234d1b1f805SChristoph Hellwig */ 1235d1b1f805SChristoph Hellwig lun_count++; 12360f69a387SRoland Dreier if (offset >= cmd->data_length) 1237d1b1f805SChristoph Hellwig continue; 1238d1b1f805SChristoph Hellwig 12390f69a387SRoland Dreier int_to_scsilun(deve->mapped_lun, &slun); 12400f69a387SRoland Dreier memcpy(buf + offset, &slun, 12410f69a387SRoland Dreier min(8u, cmd->data_length - offset)); 1242d1b1f805SChristoph Hellwig offset += 8; 1243d1b1f805SChristoph Hellwig } 124429a05deeSNicholas Bellinger rcu_read_unlock(); 1245d1b1f805SChristoph Hellwig 1246d1b1f805SChristoph Hellwig /* 1247d1b1f805SChristoph Hellwig * See SPC3 r07, page 159. 1248d1b1f805SChristoph Hellwig */ 1249d1b1f805SChristoph Hellwig done: 12509c395170SRoland Dreier /* 12519c395170SRoland Dreier * If no LUNs are accessible, report virtual LUN 0. 12529c395170SRoland Dreier */ 12539c395170SRoland Dreier if (lun_count == 0) { 12540f69a387SRoland Dreier int_to_scsilun(0, &slun); 12550f69a387SRoland Dreier if (cmd->data_length > 8) 12560f69a387SRoland Dreier memcpy(buf + offset, &slun, 12570f69a387SRoland Dreier min(8u, cmd->data_length - offset)); 12589c395170SRoland Dreier lun_count = 1; 12599c395170SRoland Dreier } 12609c395170SRoland Dreier 12610f69a387SRoland Dreier if (buf) { 12620f69a387SRoland Dreier len = cpu_to_be32(lun_count * 8); 12630f69a387SRoland Dreier memcpy(buf, &len, min_t(int, sizeof len, cmd->data_length)); 1264d1b1f805SChristoph Hellwig transport_kunmap_data_sg(cmd); 12650f69a387SRoland Dreier } 1266d1b1f805SChristoph Hellwig 12672426bd45SRoland Dreier target_complete_cmd_with_length(cmd, GOOD, 8 + lun_count * 8); 1268d1b1f805SChristoph Hellwig return 0; 1269d1b1f805SChristoph Hellwig } 12708de530a5SChristoph Hellwig EXPORT_SYMBOL(spc_emulate_report_luns); 1271d1b1f805SChristoph Hellwig 1272de103c93SChristoph Hellwig static sense_reason_t 1273de103c93SChristoph Hellwig spc_emulate_testunitready(struct se_cmd *cmd) 12741fd032eeSChristoph Hellwig { 12751fd032eeSChristoph Hellwig target_complete_cmd(cmd, GOOD); 12761fd032eeSChristoph Hellwig return 0; 12771fd032eeSChristoph Hellwig } 12781fd032eeSChristoph Hellwig 1279de103c93SChristoph Hellwig sense_reason_t 1280de103c93SChristoph Hellwig spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) 128188455ec4SChristoph Hellwig { 1282eba2ca45SNicholas Bellinger struct se_device *dev = cmd->se_dev; 128388455ec4SChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 128488455ec4SChristoph Hellwig 1285b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr && 1286b49d6f78SDavid Disseldorp ((cdb[0] == PERSISTENT_RESERVE_IN) || 1287b49d6f78SDavid Disseldorp (cdb[0] == PERSISTENT_RESERVE_OUT) || 1288b49d6f78SDavid Disseldorp (cdb[0] == RELEASE || cdb[0] == RELEASE_10) || 1289b49d6f78SDavid Disseldorp (cdb[0] == RESERVE || cdb[0] == RESERVE_10))) { 1290b49d6f78SDavid Disseldorp return TCM_UNSUPPORTED_SCSI_OPCODE; 1291b49d6f78SDavid Disseldorp } 1292b49d6f78SDavid Disseldorp 129388455ec4SChristoph Hellwig switch (cdb[0]) { 129488455ec4SChristoph Hellwig case MODE_SELECT: 129588455ec4SChristoph Hellwig *size = cdb[4]; 12963a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 129788455ec4SChristoph Hellwig break; 129888455ec4SChristoph Hellwig case MODE_SELECT_10: 1299a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 13003a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 130188455ec4SChristoph Hellwig break; 130288455ec4SChristoph Hellwig case MODE_SENSE: 130388455ec4SChristoph Hellwig *size = cdb[4]; 13041fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 130588455ec4SChristoph Hellwig break; 130688455ec4SChristoph Hellwig case MODE_SENSE_10: 1307a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 13081fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 130988455ec4SChristoph Hellwig break; 131088455ec4SChristoph Hellwig case LOG_SELECT: 131188455ec4SChristoph Hellwig case LOG_SENSE: 1312a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 131388455ec4SChristoph Hellwig break; 131488455ec4SChristoph Hellwig case PERSISTENT_RESERVE_IN: 1315a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 1316d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_in; 131788455ec4SChristoph Hellwig break; 131888455ec4SChristoph Hellwig case PERSISTENT_RESERVE_OUT: 1319388fe699STang Wenji *size = get_unaligned_be32(&cdb[5]); 1320d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_out; 132188455ec4SChristoph Hellwig break; 132288455ec4SChristoph Hellwig case RELEASE: 132388455ec4SChristoph Hellwig case RELEASE_10: 132488455ec4SChristoph Hellwig if (cdb[0] == RELEASE_10) 1325a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 132688455ec4SChristoph Hellwig else 132788455ec4SChristoph Hellwig *size = cmd->data_length; 132888455ec4SChristoph Hellwig 132988455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_release; 133088455ec4SChristoph Hellwig break; 133188455ec4SChristoph Hellwig case RESERVE: 133288455ec4SChristoph Hellwig case RESERVE_10: 133388455ec4SChristoph Hellwig /* 133488455ec4SChristoph Hellwig * The SPC-2 RESERVE does not contain a size in the SCSI CDB. 133588455ec4SChristoph Hellwig * Assume the passthrough or $FABRIC_MOD will tell us about it. 133688455ec4SChristoph Hellwig */ 133788455ec4SChristoph Hellwig if (cdb[0] == RESERVE_10) 1338a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 133988455ec4SChristoph Hellwig else 134088455ec4SChristoph Hellwig *size = cmd->data_length; 134188455ec4SChristoph Hellwig 134288455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_reserve; 134388455ec4SChristoph Hellwig break; 134488455ec4SChristoph Hellwig case REQUEST_SENSE: 134588455ec4SChristoph Hellwig *size = cdb[4]; 13461fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_request_sense; 134788455ec4SChristoph Hellwig break; 134888455ec4SChristoph Hellwig case INQUIRY: 1349a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[3]); 135088455ec4SChristoph Hellwig 135188455ec4SChristoph Hellwig /* 1352125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for INQUIRY. 135388455ec4SChristoph Hellwig * See spc4r17 section 5.3 135488455ec4SChristoph Hellwig */ 135568d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 13561fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_inquiry; 135788455ec4SChristoph Hellwig break; 135888455ec4SChristoph Hellwig case SECURITY_PROTOCOL_IN: 135988455ec4SChristoph Hellwig case SECURITY_PROTOCOL_OUT: 1360a85d667eSBart Van Assche *size = get_unaligned_be32(&cdb[6]); 136188455ec4SChristoph Hellwig break; 136288455ec4SChristoph Hellwig case EXTENDED_COPY: 136304b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 136404b1b795SNicholas Bellinger cmd->execute_cmd = target_do_xcopy; 136504b1b795SNicholas Bellinger break; 136688455ec4SChristoph Hellwig case RECEIVE_COPY_RESULTS: 136704b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 136804b1b795SNicholas Bellinger cmd->execute_cmd = target_do_receive_copy_results; 136904b1b795SNicholas Bellinger break; 137004b1b795SNicholas Bellinger case READ_ATTRIBUTE: 137188455ec4SChristoph Hellwig case WRITE_ATTRIBUTE: 1372a85d667eSBart Van Assche *size = get_unaligned_be32(&cdb[10]); 137388455ec4SChristoph Hellwig break; 137488455ec4SChristoph Hellwig case RECEIVE_DIAGNOSTIC: 137588455ec4SChristoph Hellwig case SEND_DIAGNOSTIC: 1376a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[3]); 137788455ec4SChristoph Hellwig break; 137888455ec4SChristoph Hellwig case WRITE_BUFFER: 1379a85d667eSBart Van Assche *size = get_unaligned_be24(&cdb[6]); 138088455ec4SChristoph Hellwig break; 138188455ec4SChristoph Hellwig case REPORT_LUNS: 1382d1b1f805SChristoph Hellwig cmd->execute_cmd = spc_emulate_report_luns; 1383a85d667eSBart Van Assche *size = get_unaligned_be32(&cdb[6]); 138488455ec4SChristoph Hellwig /* 1385125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for REPORT_LUNS 138688455ec4SChristoph Hellwig * See spc4r17 section 5.3 138788455ec4SChristoph Hellwig */ 138868d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 138988455ec4SChristoph Hellwig break; 139088455ec4SChristoph Hellwig case TEST_UNIT_READY: 13911fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_testunitready; 1392d6e0175cSChristoph Hellwig *size = 0; 139388455ec4SChristoph Hellwig break; 1394eba2ca45SNicholas Bellinger case MAINTENANCE_IN: 1395eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1396eba2ca45SNicholas Bellinger /* 1397eba2ca45SNicholas Bellinger * MAINTENANCE_IN from SCC-2 1398eba2ca45SNicholas Bellinger * Check for emulated MI_REPORT_TARGET_PGS 1399eba2ca45SNicholas Bellinger */ 1400c87fbd56SChristoph Hellwig if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS) { 1401eba2ca45SNicholas Bellinger cmd->execute_cmd = 1402eba2ca45SNicholas Bellinger target_emulate_report_target_port_groups; 1403eba2ca45SNicholas Bellinger } 1404eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1405eba2ca45SNicholas Bellinger } else { 1406eba2ca45SNicholas Bellinger /* 1407eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1408eba2ca45SNicholas Bellinger */ 1409eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1410eba2ca45SNicholas Bellinger } 1411eba2ca45SNicholas Bellinger break; 1412eba2ca45SNicholas Bellinger case MAINTENANCE_OUT: 1413eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1414eba2ca45SNicholas Bellinger /* 1415eba2ca45SNicholas Bellinger * MAINTENANCE_OUT from SCC-2 1416eba2ca45SNicholas Bellinger * Check for emulated MO_SET_TARGET_PGS. 1417eba2ca45SNicholas Bellinger */ 1418c87fbd56SChristoph Hellwig if (cdb[1] == MO_SET_TARGET_PGS) { 1419eba2ca45SNicholas Bellinger cmd->execute_cmd = 1420eba2ca45SNicholas Bellinger target_emulate_set_target_port_groups; 1421eba2ca45SNicholas Bellinger } 1422eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1423eba2ca45SNicholas Bellinger } else { 1424eba2ca45SNicholas Bellinger /* 1425eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1426eba2ca45SNicholas Bellinger */ 1427eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1428eba2ca45SNicholas Bellinger } 1429eba2ca45SNicholas Bellinger break; 143088455ec4SChristoph Hellwig default: 1431de103c93SChristoph Hellwig return TCM_UNSUPPORTED_SCSI_OPCODE; 143288455ec4SChristoph Hellwig } 143388455ec4SChristoph Hellwig 143488455ec4SChristoph Hellwig return 0; 143588455ec4SChristoph Hellwig } 143688455ec4SChristoph Hellwig EXPORT_SYMBOL(spc_parse_cdb); 1437