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 */ 43*e2a49a95SMike Christie rcu_read_lock(); 44*e2a49a95SMike Christie tg_pt_gp = rcu_dereference(lun->lun_tg_pt_gp); 451fd032eeSChristoph Hellwig if (tg_pt_gp) 461fd032eeSChristoph Hellwig buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; 47*e2a49a95SMike Christie rcu_read_unlock(); 481fd032eeSChristoph Hellwig } 491fd032eeSChristoph Hellwig 50b790a56dSKonstantin Shelekhin static u16 51b790a56dSKonstantin Shelekhin spc_find_scsi_transport_vd(int proto_id) 52b790a56dSKonstantin Shelekhin { 53b790a56dSKonstantin Shelekhin switch (proto_id) { 54b790a56dSKonstantin Shelekhin case SCSI_PROTOCOL_FCP: 55b790a56dSKonstantin Shelekhin return SCSI_VERSION_DESCRIPTOR_FCP4; 56b790a56dSKonstantin Shelekhin case SCSI_PROTOCOL_ISCSI: 57b790a56dSKonstantin Shelekhin return SCSI_VERSION_DESCRIPTOR_ISCSI; 58b790a56dSKonstantin Shelekhin case SCSI_PROTOCOL_SAS: 59b790a56dSKonstantin Shelekhin return SCSI_VERSION_DESCRIPTOR_SAS3; 60b790a56dSKonstantin Shelekhin case SCSI_PROTOCOL_SBP: 61b790a56dSKonstantin Shelekhin return SCSI_VERSION_DESCRIPTOR_SBP3; 62b790a56dSKonstantin Shelekhin case SCSI_PROTOCOL_SRP: 63b790a56dSKonstantin Shelekhin return SCSI_VERSION_DESCRIPTOR_SRP; 64b790a56dSKonstantin Shelekhin default: 65b790a56dSKonstantin Shelekhin pr_warn("Cannot find VERSION DESCRIPTOR value for unknown SCSI" 66b790a56dSKonstantin Shelekhin " transport PROTOCOL IDENTIFIER %#x\n", proto_id); 67b790a56dSKonstantin Shelekhin return 0; 68b790a56dSKonstantin Shelekhin } 69b790a56dSKonstantin Shelekhin } 70b790a56dSKonstantin Shelekhin 710dfa1c5dSHannes Reinecke sense_reason_t 720dfa1c5dSHannes Reinecke spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) 731fd032eeSChristoph Hellwig { 741fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 75b790a56dSKonstantin Shelekhin struct se_portal_group *tpg = lun->lun_tpg; 761fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 77d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 781fd032eeSChristoph Hellwig 791fd032eeSChristoph Hellwig /* Set RMB (removable media) for tape devices */ 801fd032eeSChristoph Hellwig if (dev->transport->get_device_type(dev) == TYPE_TAPE) 811fd032eeSChristoph Hellwig buf[1] = 0x80; 821fd032eeSChristoph Hellwig 8364ae33efSKonstantin Shelekhin buf[2] = 0x06; /* SPC-4 */ 841fd032eeSChristoph Hellwig 851fd032eeSChristoph Hellwig /* 861fd032eeSChristoph Hellwig * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 871fd032eeSChristoph Hellwig * 881fd032eeSChristoph Hellwig * SPC4 says: 891fd032eeSChristoph Hellwig * A RESPONSE DATA FORMAT field set to 2h indicates that the 901fd032eeSChristoph Hellwig * standard INQUIRY data is in the format defined in this 911fd032eeSChristoph Hellwig * standard. Response data format values less than 2h are 921fd032eeSChristoph Hellwig * obsolete. Response data format values greater than 2h are 931fd032eeSChristoph Hellwig * reserved. 941fd032eeSChristoph Hellwig */ 951fd032eeSChristoph Hellwig buf[3] = 2; 961fd032eeSChristoph Hellwig 971fd032eeSChristoph Hellwig /* 981fd032eeSChristoph Hellwig * Enable SCCS and TPGS fields for Emulated ALUA 991fd032eeSChristoph Hellwig */ 100adf653f9SChristoph Hellwig spc_fill_alua_data(lun, buf); 1011fd032eeSChristoph Hellwig 102d397a445SNicholas Bellinger /* 103d397a445SNicholas Bellinger * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY 104d397a445SNicholas Bellinger */ 105d397a445SNicholas Bellinger if (dev->dev_attrib.emulate_3pc) 106d397a445SNicholas Bellinger buf[5] |= 0x8; 107bdbad2bdSNicholas Bellinger /* 108d2c5304cSNicholas Bellinger * Set Protection (PROTECT) bit when DIF has been enabled on the 1099ef5466eSNicholas Bellinger * device, and the fabric supports VERIFY + PASS. Also report 1109ef5466eSNicholas Bellinger * PROTECT=1 if sess_prot_type has been configured to allow T10-PI 1119ef5466eSNicholas Bellinger * to unprotected devices. 112bdbad2bdSNicholas Bellinger */ 113d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 1149ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || cmd->se_sess->sess_prot_type) 115bdbad2bdSNicholas Bellinger buf[5] |= 0x1; 116d2c5304cSNicholas Bellinger } 117d397a445SNicholas Bellinger 1181fd032eeSChristoph Hellwig buf[7] = 0x2; /* CmdQue=1 */ 1191fd032eeSChristoph Hellwig 1200de26357SDavid Disseldorp /* 1210de26357SDavid Disseldorp * ASCII data fields described as being left-aligned shall have any 1220de26357SDavid Disseldorp * unused bytes at the end of the field (i.e., highest offset) and the 1230de26357SDavid Disseldorp * unused bytes shall be filled with ASCII space characters (20h). 1240de26357SDavid Disseldorp */ 125b2da4abfSDavid Disseldorp memset(&buf[8], 0x20, 126b2da4abfSDavid Disseldorp INQUIRY_VENDOR_LEN + INQUIRY_MODEL_LEN + INQUIRY_REVISION_LEN); 1272d882847SDavid Disseldorp memcpy(&buf[8], dev->t10_wwn.vendor, 1282d882847SDavid Disseldorp strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); 129ee60bddbSNicholas Bellinger memcpy(&buf[16], dev->t10_wwn.model, 130b2da4abfSDavid Disseldorp strnlen(dev->t10_wwn.model, INQUIRY_MODEL_LEN)); 131ee60bddbSNicholas Bellinger memcpy(&buf[32], dev->t10_wwn.revision, 132b2da4abfSDavid Disseldorp strnlen(dev->t10_wwn.revision, INQUIRY_REVISION_LEN)); 133b790a56dSKonstantin Shelekhin 134b790a56dSKonstantin Shelekhin /* 135b790a56dSKonstantin Shelekhin * Set the VERSION DESCRIPTOR fields 136b790a56dSKonstantin Shelekhin */ 137b790a56dSKonstantin Shelekhin put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SAM5, &buf[58]); 138b790a56dSKonstantin Shelekhin put_unaligned_be16(spc_find_scsi_transport_vd(tpg->proto_id), &buf[60]); 139b790a56dSKonstantin Shelekhin put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SPC4, &buf[62]); 140b790a56dSKonstantin Shelekhin if (cmd->se_dev->transport->get_device_type(dev) == TYPE_DISK) 141b790a56dSKonstantin Shelekhin put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SBC3, &buf[64]); 142b790a56dSKonstantin Shelekhin 143b790a56dSKonstantin Shelekhin buf[4] = 91; /* Set additional length to 91 */ 1441fd032eeSChristoph Hellwig 1451fd032eeSChristoph Hellwig return 0; 1461fd032eeSChristoph Hellwig } 1470dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_inquiry_std); 1481fd032eeSChristoph Hellwig 1491fd032eeSChristoph Hellwig /* unit serial number */ 150de103c93SChristoph Hellwig static sense_reason_t 151de103c93SChristoph Hellwig spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) 1521fd032eeSChristoph Hellwig { 1531fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 1549aff64e1SChristophe Vu-Brugier u16 len; 1551fd032eeSChristoph Hellwig 1560fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 1579aff64e1SChristophe Vu-Brugier len = sprintf(&buf[4], "%s", dev->t10_wwn.unit_serial); 1581fd032eeSChristoph Hellwig len++; /* Extra Byte for NULL Terminator */ 1591fd032eeSChristoph Hellwig buf[3] = len; 1601fd032eeSChristoph Hellwig } 1611fd032eeSChristoph Hellwig return 0; 1621fd032eeSChristoph Hellwig } 1631fd032eeSChristoph Hellwig 16417f947b8SSergey Samoylenko /* 16517f947b8SSergey Samoylenko * Generate NAA IEEE Registered Extended designator 16617f947b8SSergey Samoylenko */ 16717f947b8SSergey Samoylenko void spc_gen_naa_6h_vendor_specific(struct se_device *dev, 1681fd032eeSChristoph Hellwig unsigned char *buf) 1691fd032eeSChristoph Hellwig { 1700fd97ccfSChristoph Hellwig unsigned char *p = &dev->t10_wwn.unit_serial[0]; 1712469f1e0SSergey Samoylenko u32 company_id = dev->t10_wwn.company_id; 17217f947b8SSergey Samoylenko int cnt, off = 0; 1731fd032eeSChristoph Hellwig bool next = true; 1741fd032eeSChristoph Hellwig 1751fd032eeSChristoph Hellwig /* 17617f947b8SSergey Samoylenko * Start NAA IEEE Registered Extended Identifier/Designator 17717f947b8SSergey Samoylenko */ 1782469f1e0SSergey Samoylenko buf[off] = 0x6 << 4; 17917f947b8SSergey Samoylenko 1802469f1e0SSergey Samoylenko /* IEEE COMPANY_ID */ 1812469f1e0SSergey Samoylenko buf[off++] |= (company_id >> 20) & 0xf; 1822469f1e0SSergey Samoylenko buf[off++] = (company_id >> 12) & 0xff; 1832469f1e0SSergey Samoylenko buf[off++] = (company_id >> 4) & 0xff; 1842469f1e0SSergey Samoylenko buf[off] = (company_id & 0xf) << 4; 18517f947b8SSergey Samoylenko 18617f947b8SSergey Samoylenko /* 1871fd032eeSChristoph Hellwig * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on 1881fd032eeSChristoph Hellwig * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field 1891fd032eeSChristoph Hellwig * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION 1901fd032eeSChristoph Hellwig * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL 1911fd032eeSChristoph Hellwig * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure 1921fd032eeSChristoph Hellwig * per device uniqeness. 1931fd032eeSChristoph Hellwig */ 19417f947b8SSergey Samoylenko for (cnt = off + 13; *p && off < cnt; p++) { 1951fd032eeSChristoph Hellwig int val = hex_to_bin(*p); 1961fd032eeSChristoph Hellwig 1971fd032eeSChristoph Hellwig if (val < 0) 1981fd032eeSChristoph Hellwig continue; 1991fd032eeSChristoph Hellwig 2001fd032eeSChristoph Hellwig if (next) { 2011fd032eeSChristoph Hellwig next = false; 20217f947b8SSergey Samoylenko buf[off++] |= val; 2031fd032eeSChristoph Hellwig } else { 2041fd032eeSChristoph Hellwig next = true; 20517f947b8SSergey Samoylenko buf[off] = val << 4; 2061fd032eeSChristoph Hellwig } 2071fd032eeSChristoph Hellwig } 2081fd032eeSChristoph Hellwig } 2091fd032eeSChristoph Hellwig 2101fd032eeSChristoph Hellwig /* 2111fd032eeSChristoph Hellwig * Device identification VPD, for a complete list of 2121fd032eeSChristoph Hellwig * DESIGNATOR TYPEs see spc4r17 Table 459. 2131fd032eeSChristoph Hellwig */ 2140dfa1c5dSHannes Reinecke sense_reason_t 215de103c93SChristoph Hellwig spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) 2161fd032eeSChristoph Hellwig { 2171fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 2181fd032eeSChristoph Hellwig struct se_lun *lun = cmd->se_lun; 2191fd032eeSChristoph Hellwig struct se_portal_group *tpg = NULL; 2201fd032eeSChristoph Hellwig struct t10_alua_lu_gp_member *lu_gp_mem; 2211fd032eeSChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp; 2220fd97ccfSChristoph Hellwig unsigned char *prod = &dev->t10_wwn.model[0]; 2231fd032eeSChristoph Hellwig u32 prod_len; 2241fd032eeSChristoph Hellwig u32 unit_serial_len, off = 0; 2251fd032eeSChristoph Hellwig u16 len = 0, id_len; 2261fd032eeSChristoph Hellwig 2271fd032eeSChristoph Hellwig off = 4; 2281fd032eeSChristoph Hellwig 2291fd032eeSChristoph Hellwig /* 2301fd032eeSChristoph Hellwig * NAA IEEE Registered Extended Assigned designator format, see 2311fd032eeSChristoph Hellwig * spc4r17 section 7.7.3.6.5 2321fd032eeSChristoph Hellwig * 2331fd032eeSChristoph Hellwig * We depend upon a target_core_mod/ConfigFS provided 2341fd032eeSChristoph Hellwig * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial 2351fd032eeSChristoph Hellwig * value in order to return the NAA id. 2361fd032eeSChristoph Hellwig */ 2370fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL)) 2381fd032eeSChristoph Hellwig goto check_t10_vend_desc; 2391fd032eeSChristoph Hellwig 2401fd032eeSChristoph Hellwig /* CODE SET == Binary */ 2411fd032eeSChristoph Hellwig buf[off++] = 0x1; 2421fd032eeSChristoph Hellwig 2431fd032eeSChristoph Hellwig /* Set ASSOCIATION == addressed logical unit: 0)b */ 2441fd032eeSChristoph Hellwig buf[off] = 0x00; 2451fd032eeSChristoph Hellwig 2461fd032eeSChristoph Hellwig /* Identifier/Designator type == NAA identifier */ 2471fd032eeSChristoph Hellwig buf[off++] |= 0x3; 2481fd032eeSChristoph Hellwig off++; 2491fd032eeSChristoph Hellwig 2501fd032eeSChristoph Hellwig /* Identifier/Designator length */ 2511fd032eeSChristoph Hellwig buf[off++] = 0x10; 2521fd032eeSChristoph Hellwig 25317f947b8SSergey Samoylenko /* NAA IEEE Registered Extended designator */ 25417f947b8SSergey Samoylenko spc_gen_naa_6h_vendor_specific(dev, &buf[off]); 2551fd032eeSChristoph Hellwig 2561fd032eeSChristoph Hellwig len = 20; 2571fd032eeSChristoph Hellwig off = (len + 4); 2581fd032eeSChristoph Hellwig 2591fd032eeSChristoph Hellwig check_t10_vend_desc: 2601fd032eeSChristoph Hellwig /* 2611fd032eeSChristoph Hellwig * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 2621fd032eeSChristoph Hellwig */ 2631fd032eeSChristoph Hellwig id_len = 8; /* For Vendor field */ 2641fd032eeSChristoph Hellwig prod_len = 4; /* For VPD Header */ 2651fd032eeSChristoph Hellwig prod_len += 8; /* For Vendor field */ 2661fd032eeSChristoph Hellwig prod_len += strlen(prod); 2671fd032eeSChristoph Hellwig prod_len++; /* For : */ 2681fd032eeSChristoph Hellwig 2690fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 2700fd97ccfSChristoph Hellwig unit_serial_len = strlen(&dev->t10_wwn.unit_serial[0]); 2711fd032eeSChristoph Hellwig unit_serial_len++; /* For NULL Terminator */ 2721fd032eeSChristoph Hellwig 2731fd032eeSChristoph Hellwig id_len += sprintf(&buf[off+12], "%s:%s", prod, 2740fd97ccfSChristoph Hellwig &dev->t10_wwn.unit_serial[0]); 2751fd032eeSChristoph Hellwig } 2761fd032eeSChristoph Hellwig buf[off] = 0x2; /* ASCII */ 2771fd032eeSChristoph Hellwig buf[off+1] = 0x1; /* T10 Vendor ID */ 2781fd032eeSChristoph Hellwig buf[off+2] = 0x0; 2790de26357SDavid Disseldorp /* left align Vendor ID and pad with spaces */ 2802d882847SDavid Disseldorp memset(&buf[off+4], 0x20, INQUIRY_VENDOR_LEN); 2812d882847SDavid Disseldorp memcpy(&buf[off+4], dev->t10_wwn.vendor, 2822d882847SDavid Disseldorp strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); 2831fd032eeSChristoph Hellwig /* Extra Byte for NULL Terminator */ 2841fd032eeSChristoph Hellwig id_len++; 2851fd032eeSChristoph Hellwig /* Identifier Length */ 2861fd032eeSChristoph Hellwig buf[off+3] = id_len; 2871fd032eeSChristoph Hellwig /* Header size for Designation descriptor */ 2881fd032eeSChristoph Hellwig len += (id_len + 4); 2891fd032eeSChristoph Hellwig off += (id_len + 4); 290adf653f9SChristoph Hellwig 291adf653f9SChristoph Hellwig if (1) { 2921fd032eeSChristoph Hellwig struct t10_alua_lu_gp *lu_gp; 293fbfe858fSHannes Reinecke u32 padding, scsi_name_len, scsi_target_len; 2941fd032eeSChristoph Hellwig u16 lu_gp_id = 0; 2951fd032eeSChristoph Hellwig u16 tg_pt_gp_id = 0; 2961fd032eeSChristoph Hellwig u16 tpgt; 2971fd032eeSChristoph Hellwig 298adf653f9SChristoph Hellwig tpg = lun->lun_tpg; 2991fd032eeSChristoph Hellwig /* 3001fd032eeSChristoph Hellwig * Relative target port identifer, see spc4r17 3011fd032eeSChristoph Hellwig * section 7.7.3.7 3021fd032eeSChristoph Hellwig * 3031fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3041fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3051fd032eeSChristoph Hellwig */ 3062aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3071fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3081fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3091fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3101fd032eeSChristoph Hellwig buf[off] |= 0x10; 3111fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Relative target port identifer */ 3121fd032eeSChristoph Hellwig buf[off++] |= 0x4; 3131fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3141fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3151fd032eeSChristoph Hellwig /* Skip over Obsolete field in RTPI payload 3161fd032eeSChristoph Hellwig * in Table 472 */ 3171fd032eeSChristoph Hellwig off += 2; 318a85d667eSBart Van Assche put_unaligned_be16(lun->lun_rtpi, &buf[off]); 319a85d667eSBart Van Assche off += 2; 3201fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3211fd032eeSChristoph Hellwig /* 3221fd032eeSChristoph Hellwig * Target port group identifier, see spc4r17 3231fd032eeSChristoph Hellwig * section 7.7.3.8 3241fd032eeSChristoph Hellwig * 3251fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3261fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3271fd032eeSChristoph Hellwig */ 328*e2a49a95SMike Christie rcu_read_lock(); 329*e2a49a95SMike Christie tg_pt_gp = rcu_dereference(lun->lun_tg_pt_gp); 3301fd032eeSChristoph Hellwig if (!tg_pt_gp) { 331*e2a49a95SMike Christie rcu_read_unlock(); 3321fd032eeSChristoph Hellwig goto check_lu_gp; 3331fd032eeSChristoph Hellwig } 3341fd032eeSChristoph Hellwig tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; 335*e2a49a95SMike Christie rcu_read_unlock(); 3361fd032eeSChristoph Hellwig 3372aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3381fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3391fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3401fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3411fd032eeSChristoph Hellwig buf[off] |= 0x10; 3421fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Target port group identifier */ 3431fd032eeSChristoph Hellwig buf[off++] |= 0x5; 3441fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3451fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3461fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 347a85d667eSBart Van Assche put_unaligned_be16(tg_pt_gp_id, &buf[off]); 348a85d667eSBart Van Assche off += 2; 3491fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3501fd032eeSChristoph Hellwig /* 3511fd032eeSChristoph Hellwig * Logical Unit Group identifier, see spc4r17 3521fd032eeSChristoph Hellwig * section 7.7.3.8 3531fd032eeSChristoph Hellwig */ 3541fd032eeSChristoph Hellwig check_lu_gp: 3551fd032eeSChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 3561fd032eeSChristoph Hellwig if (!lu_gp_mem) 3571fd032eeSChristoph Hellwig goto check_scsi_name; 3581fd032eeSChristoph Hellwig 3591fd032eeSChristoph Hellwig spin_lock(&lu_gp_mem->lu_gp_mem_lock); 3601fd032eeSChristoph Hellwig lu_gp = lu_gp_mem->lu_gp; 3611fd032eeSChristoph Hellwig if (!lu_gp) { 3621fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3631fd032eeSChristoph Hellwig goto check_scsi_name; 3641fd032eeSChristoph Hellwig } 3651fd032eeSChristoph Hellwig lu_gp_id = lu_gp->lu_gp_id; 3661fd032eeSChristoph Hellwig spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 3671fd032eeSChristoph Hellwig 3681fd032eeSChristoph Hellwig buf[off++] |= 0x1; /* CODE SET == Binary */ 3691fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == Logical Unit Group identifier */ 3701fd032eeSChristoph Hellwig buf[off++] |= 0x6; 3711fd032eeSChristoph Hellwig off++; /* Skip over Reserved */ 3721fd032eeSChristoph Hellwig buf[off++] = 4; /* DESIGNATOR LENGTH */ 3731fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved Field */ 374a85d667eSBart Van Assche put_unaligned_be16(lu_gp_id, &buf[off]); 375a85d667eSBart Van Assche off += 2; 3761fd032eeSChristoph Hellwig len += 8; /* Header size + Designation descriptor */ 3771fd032eeSChristoph Hellwig /* 3781fd032eeSChristoph Hellwig * SCSI name string designator, see spc4r17 3791fd032eeSChristoph Hellwig * section 7.7.3.11 3801fd032eeSChristoph Hellwig * 3811fd032eeSChristoph Hellwig * Get the PROTOCOL IDENTIFIER as defined by spc4r17 3821fd032eeSChristoph Hellwig * section 7.5.1 Table 362 3831fd032eeSChristoph Hellwig */ 3841fd032eeSChristoph Hellwig check_scsi_name: 3852aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 3861fd032eeSChristoph Hellwig buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 3871fd032eeSChristoph Hellwig buf[off] = 0x80; /* Set PIV=1 */ 3881fd032eeSChristoph Hellwig /* Set ASSOCIATION == target port: 01b */ 3891fd032eeSChristoph Hellwig buf[off] |= 0x10; 3901fd032eeSChristoph Hellwig /* DESIGNATOR TYPE == SCSI name string */ 3911fd032eeSChristoph Hellwig buf[off++] |= 0x8; 3921fd032eeSChristoph Hellwig off += 2; /* Skip over Reserved and length */ 3931fd032eeSChristoph Hellwig /* 3941fd032eeSChristoph Hellwig * SCSI name string identifer containing, $FABRIC_MOD 3951fd032eeSChristoph Hellwig * dependent information. For LIO-Target and iSCSI 3961fd032eeSChristoph Hellwig * Target Port, this means "<iSCSI name>,t,0x<TPGT> in 3971fd032eeSChristoph Hellwig * UTF-8 encoding. 3981fd032eeSChristoph Hellwig */ 3991fd032eeSChristoph Hellwig tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 4001fd032eeSChristoph Hellwig scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", 4011fd032eeSChristoph Hellwig tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); 4021fd032eeSChristoph Hellwig scsi_name_len += 1 /* Include NULL terminator */; 4031fd032eeSChristoph Hellwig /* 4041fd032eeSChristoph Hellwig * The null-terminated, null-padded (see 4.4.2) SCSI 4051fd032eeSChristoph Hellwig * NAME STRING field contains a UTF-8 format string. 4061fd032eeSChristoph Hellwig * The number of bytes in the SCSI NAME STRING field 4071fd032eeSChristoph Hellwig * (i.e., the value in the DESIGNATOR LENGTH field) 4081fd032eeSChristoph Hellwig * shall be no larger than 256 and shall be a multiple 4091fd032eeSChristoph Hellwig * of four. 4101fd032eeSChristoph Hellwig */ 41103ba84caSHannes Reinecke padding = ((-scsi_name_len) & 3); 4121fd032eeSChristoph Hellwig if (padding) 4131fd032eeSChristoph Hellwig scsi_name_len += padding; 41403ba84caSHannes Reinecke if (scsi_name_len > 256) 41503ba84caSHannes Reinecke scsi_name_len = 256; 4161fd032eeSChristoph Hellwig 4171fd032eeSChristoph Hellwig buf[off-1] = scsi_name_len; 4181fd032eeSChristoph Hellwig off += scsi_name_len; 4191fd032eeSChristoph Hellwig /* Header size + Designation descriptor */ 4201fd032eeSChristoph Hellwig len += (scsi_name_len + 4); 421fbfe858fSHannes Reinecke 422fbfe858fSHannes Reinecke /* 423fbfe858fSHannes Reinecke * Target device designator 424fbfe858fSHannes Reinecke */ 4252aeeafaeSChristoph Hellwig buf[off] = tpg->proto_id << 4; 426fbfe858fSHannes Reinecke buf[off++] |= 0x3; /* CODE SET == UTF-8 */ 427fbfe858fSHannes Reinecke buf[off] = 0x80; /* Set PIV=1 */ 428fbfe858fSHannes Reinecke /* Set ASSOCIATION == target device: 10b */ 429fbfe858fSHannes Reinecke buf[off] |= 0x20; 430fbfe858fSHannes Reinecke /* DESIGNATOR TYPE == SCSI name string */ 431fbfe858fSHannes Reinecke buf[off++] |= 0x8; 432fbfe858fSHannes Reinecke off += 2; /* Skip over Reserved and length */ 433fbfe858fSHannes Reinecke /* 434fbfe858fSHannes Reinecke * SCSI name string identifer containing, $FABRIC_MOD 435fbfe858fSHannes Reinecke * dependent information. For LIO-Target and iSCSI 436fbfe858fSHannes Reinecke * Target Port, this means "<iSCSI name>" in 437fbfe858fSHannes Reinecke * UTF-8 encoding. 438fbfe858fSHannes Reinecke */ 439fbfe858fSHannes Reinecke scsi_target_len = sprintf(&buf[off], "%s", 440fbfe858fSHannes Reinecke tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 441fbfe858fSHannes Reinecke scsi_target_len += 1 /* Include NULL terminator */; 442fbfe858fSHannes Reinecke /* 443fbfe858fSHannes Reinecke * The null-terminated, null-padded (see 4.4.2) SCSI 444fbfe858fSHannes Reinecke * NAME STRING field contains a UTF-8 format string. 445fbfe858fSHannes Reinecke * The number of bytes in the SCSI NAME STRING field 446fbfe858fSHannes Reinecke * (i.e., the value in the DESIGNATOR LENGTH field) 447fbfe858fSHannes Reinecke * shall be no larger than 256 and shall be a multiple 448fbfe858fSHannes Reinecke * of four. 449fbfe858fSHannes Reinecke */ 450fbfe858fSHannes Reinecke padding = ((-scsi_target_len) & 3); 451fbfe858fSHannes Reinecke if (padding) 452fbfe858fSHannes Reinecke scsi_target_len += padding; 4536a16d7beSRoland Dreier if (scsi_target_len > 256) 4546a16d7beSRoland Dreier scsi_target_len = 256; 455fbfe858fSHannes Reinecke 456fbfe858fSHannes Reinecke buf[off-1] = scsi_target_len; 457fbfe858fSHannes Reinecke off += scsi_target_len; 458fbfe858fSHannes Reinecke 459fbfe858fSHannes Reinecke /* Header size + Designation descriptor */ 460fbfe858fSHannes Reinecke len += (scsi_target_len + 4); 4611fd032eeSChristoph Hellwig } 462a85d667eSBart Van Assche put_unaligned_be16(len, &buf[2]); /* Page Length for VPD 0x83 */ 4631fd032eeSChristoph Hellwig return 0; 4641fd032eeSChristoph Hellwig } 4650dfa1c5dSHannes Reinecke EXPORT_SYMBOL(spc_emulate_evpd_83); 4661fd032eeSChristoph Hellwig 4671fd032eeSChristoph Hellwig /* Extended INQUIRY Data VPD Page */ 468de103c93SChristoph Hellwig static sense_reason_t 469de103c93SChristoph Hellwig spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) 4701fd032eeSChristoph Hellwig { 471d0c8b259SNicholas Bellinger struct se_device *dev = cmd->se_dev; 472d2c5304cSNicholas Bellinger struct se_session *sess = cmd->se_sess; 473d0c8b259SNicholas Bellinger 4741fd032eeSChristoph Hellwig buf[3] = 0x3c; 47543bb95c7SNicholas Bellinger /* 47643bb95c7SNicholas Bellinger * Set GRD_CHK + REF_CHK for TYPE1 protection, or GRD_CHK 47743bb95c7SNicholas Bellinger * only for TYPE3 protection. 47843bb95c7SNicholas Bellinger */ 479d2c5304cSNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 4809ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT || 4819ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE1_PROT) 48243bb95c7SNicholas Bellinger buf[4] = 0x5; 4839ef5466eSNicholas Bellinger else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT || 4849ef5466eSNicholas Bellinger cmd->se_sess->sess_prot_type == TARGET_DIF_TYPE3_PROT) 48543bb95c7SNicholas Bellinger buf[4] = 0x4; 486d2c5304cSNicholas Bellinger } 48743bb95c7SNicholas Bellinger 48827e6772bSSagi Grimberg /* logical unit supports type 1 and type 3 protection */ 4893aa3c67bSNicholas Bellinger if ((dev->transport->get_device_type(dev) == TYPE_DISK) && 4903aa3c67bSNicholas Bellinger (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) && 4913aa3c67bSNicholas Bellinger (dev->dev_attrib.pi_prot_type || cmd->se_sess->sess_prot_type)) { 49227e6772bSSagi Grimberg buf[4] |= (0x3 << 3); 4933aa3c67bSNicholas Bellinger } 49427e6772bSSagi Grimberg 4951fd032eeSChristoph Hellwig /* Set HEADSUP, ORDSUP, SIMPSUP */ 4961fd032eeSChristoph Hellwig buf[5] = 0x07; 4971fd032eeSChristoph Hellwig 4981fd032eeSChristoph Hellwig /* If WriteCache emulation is enabled, set V_SUP */ 499814e5b45SChristoph Hellwig if (target_check_wce(dev)) 5001fd032eeSChristoph Hellwig buf[6] = 0x01; 501c66094bfSHannes Reinecke /* If an LBA map is present set R_SUP */ 502c66094bfSHannes Reinecke spin_lock(&cmd->se_dev->t10_alua.lba_map_lock); 503c66094bfSHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 504c66094bfSHannes Reinecke buf[8] = 0x10; 505c66094bfSHannes Reinecke spin_unlock(&cmd->se_dev->t10_alua.lba_map_lock); 5061fd032eeSChristoph Hellwig return 0; 5071fd032eeSChristoph Hellwig } 5081fd032eeSChristoph Hellwig 5091fd032eeSChristoph Hellwig /* Block Limits VPD page */ 510de103c93SChristoph Hellwig static sense_reason_t 511de103c93SChristoph Hellwig spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) 5121fd032eeSChristoph Hellwig { 5131fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 5148f9b5654SNicholas Bellinger u32 mtl = 0; 5158f9b5654SNicholas Bellinger int have_tp = 0, opt, min; 5161fd032eeSChristoph Hellwig 5171fd032eeSChristoph Hellwig /* 5181fd032eeSChristoph Hellwig * Following spc3r22 section 6.5.3 Block Limits VPD page, when 5191fd032eeSChristoph Hellwig * emulate_tpu=1 or emulate_tpws=1 we will be expect a 5201fd032eeSChristoph Hellwig * different page length for Thin Provisioning. 5211fd032eeSChristoph Hellwig */ 5220fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu || dev->dev_attrib.emulate_tpws) 5231fd032eeSChristoph Hellwig have_tp = 1; 5241fd032eeSChristoph Hellwig 5251fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 5261fd032eeSChristoph Hellwig buf[3] = have_tp ? 0x3c : 0x10; 5271fd032eeSChristoph Hellwig 5281fd032eeSChristoph Hellwig /* Set WSNZ to 1 */ 5291fd032eeSChristoph Hellwig buf[4] = 0x01; 5300123a9ecSNicholas Bellinger /* 5310123a9ecSNicholas Bellinger * Set MAXIMUM COMPARE AND WRITE LENGTH 5320123a9ecSNicholas Bellinger */ 5330123a9ecSNicholas Bellinger if (dev->dev_attrib.emulate_caw) 5340123a9ecSNicholas Bellinger buf[5] = 0x01; 5351fd032eeSChristoph Hellwig 5361fd032eeSChristoph Hellwig /* 5371fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH GRANULARITY 5381fd032eeSChristoph Hellwig */ 5397f7caf6aSAndy Grover if (dev->transport->get_io_min && (min = dev->transport->get_io_min(dev))) 5407f7caf6aSAndy Grover put_unaligned_be16(min / dev->dev_attrib.block_size, &buf[6]); 5417f7caf6aSAndy Grover else 5421fd032eeSChristoph Hellwig put_unaligned_be16(1, &buf[6]); 5431fd032eeSChristoph Hellwig 5441fd032eeSChristoph Hellwig /* 5451fd032eeSChristoph Hellwig * Set MAXIMUM TRANSFER LENGTH 5468f9b5654SNicholas Bellinger * 5478f9b5654SNicholas Bellinger * XXX: Currently assumes single PAGE_SIZE per scatterlist for fabrics 5488f9b5654SNicholas Bellinger * enforcing maximum HW scatter-gather-list entry limit 5491fd032eeSChristoph Hellwig */ 5508f9b5654SNicholas Bellinger if (cmd->se_tfo->max_data_sg_nents) { 5518f9b5654SNicholas Bellinger mtl = (cmd->se_tfo->max_data_sg_nents * PAGE_SIZE) / 5528f9b5654SNicholas Bellinger dev->dev_attrib.block_size; 5538f9b5654SNicholas Bellinger } 5548f9b5654SNicholas Bellinger put_unaligned_be32(min_not_zero(mtl, dev->dev_attrib.hw_max_sectors), &buf[8]); 5551fd032eeSChristoph Hellwig 5561fd032eeSChristoph Hellwig /* 5571fd032eeSChristoph Hellwig * Set OPTIMAL TRANSFER LENGTH 5581fd032eeSChristoph Hellwig */ 5597f7caf6aSAndy Grover if (dev->transport->get_io_opt && (opt = dev->transport->get_io_opt(dev))) 5607f7caf6aSAndy Grover put_unaligned_be32(opt / dev->dev_attrib.block_size, &buf[12]); 5617f7caf6aSAndy Grover else 5620fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]); 5631fd032eeSChristoph Hellwig 5641fd032eeSChristoph Hellwig /* 5651fd032eeSChristoph Hellwig * Exit now if we don't support TP. 5661fd032eeSChristoph Hellwig */ 5671fd032eeSChristoph Hellwig if (!have_tp) 568773cbaf7SNicholas Bellinger goto max_write_same; 5691fd032eeSChristoph Hellwig 5701fd032eeSChristoph Hellwig /* 5711fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP LBA COUNT 5721fd032eeSChristoph Hellwig */ 5730fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_lba_count, &buf[20]); 5741fd032eeSChristoph Hellwig 5751fd032eeSChristoph Hellwig /* 5761fd032eeSChristoph Hellwig * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT 5771fd032eeSChristoph Hellwig */ 5780fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.max_unmap_block_desc_count, 5791fd032eeSChristoph Hellwig &buf[24]); 5801fd032eeSChristoph Hellwig 5811fd032eeSChristoph Hellwig /* 5821fd032eeSChristoph Hellwig * Set OPTIMAL UNMAP GRANULARITY 5831fd032eeSChristoph Hellwig */ 5840fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity, &buf[28]); 5851fd032eeSChristoph Hellwig 5861fd032eeSChristoph Hellwig /* 5871fd032eeSChristoph Hellwig * UNMAP GRANULARITY ALIGNMENT 5881fd032eeSChristoph Hellwig */ 5890fd97ccfSChristoph Hellwig put_unaligned_be32(dev->dev_attrib.unmap_granularity_alignment, 5901fd032eeSChristoph Hellwig &buf[32]); 5910fd97ccfSChristoph Hellwig if (dev->dev_attrib.unmap_granularity_alignment != 0) 5921fd032eeSChristoph Hellwig buf[32] |= 0x80; /* Set the UGAVALID bit */ 5931fd032eeSChristoph Hellwig 594773cbaf7SNicholas Bellinger /* 595773cbaf7SNicholas Bellinger * MAXIMUM WRITE SAME LENGTH 596773cbaf7SNicholas Bellinger */ 597773cbaf7SNicholas Bellinger max_write_same: 598773cbaf7SNicholas Bellinger put_unaligned_be64(dev->dev_attrib.max_write_same_len, &buf[36]); 599773cbaf7SNicholas Bellinger 6001fd032eeSChristoph Hellwig return 0; 6011fd032eeSChristoph Hellwig } 6021fd032eeSChristoph Hellwig 6031fd032eeSChristoph Hellwig /* Block Device Characteristics VPD page */ 604de103c93SChristoph Hellwig static sense_reason_t 605de103c93SChristoph Hellwig spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) 6061fd032eeSChristoph Hellwig { 6071fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 6081fd032eeSChristoph Hellwig 6091fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 6101fd032eeSChristoph Hellwig buf[3] = 0x3c; 6110fd97ccfSChristoph Hellwig buf[5] = dev->dev_attrib.is_nonrot ? 1 : 0; 6121fd032eeSChristoph Hellwig 6131fd032eeSChristoph Hellwig return 0; 6141fd032eeSChristoph Hellwig } 6151fd032eeSChristoph Hellwig 6161fd032eeSChristoph Hellwig /* Thin Provisioning VPD */ 617de103c93SChristoph Hellwig static sense_reason_t 618de103c93SChristoph Hellwig spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) 6191fd032eeSChristoph Hellwig { 6201fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 6211fd032eeSChristoph Hellwig 6221fd032eeSChristoph Hellwig /* 6231fd032eeSChristoph Hellwig * From spc3r22 section 6.5.4 Thin Provisioning VPD page: 6241fd032eeSChristoph Hellwig * 6251fd032eeSChristoph Hellwig * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to 6261fd032eeSChristoph Hellwig * zero, then the page length shall be set to 0004h. If the DP bit 6271fd032eeSChristoph Hellwig * is set to one, then the page length shall be set to the value 6281fd032eeSChristoph Hellwig * defined in table 162. 6291fd032eeSChristoph Hellwig */ 6301fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 6311fd032eeSChristoph Hellwig 6321fd032eeSChristoph Hellwig /* 6331fd032eeSChristoph Hellwig * Set Hardcoded length mentioned above for DP=0 6341fd032eeSChristoph Hellwig */ 6351fd032eeSChristoph Hellwig put_unaligned_be16(0x0004, &buf[2]); 6361fd032eeSChristoph Hellwig 6371fd032eeSChristoph Hellwig /* 6381fd032eeSChristoph Hellwig * The THRESHOLD EXPONENT field indicates the threshold set size in 6391fd032eeSChristoph Hellwig * LBAs as a power of 2 (i.e., the threshold set size is equal to 6401fd032eeSChristoph Hellwig * 2(threshold exponent)). 6411fd032eeSChristoph Hellwig * 6421fd032eeSChristoph Hellwig * Note that this is currently set to 0x00 as mkp says it will be 6431fd032eeSChristoph Hellwig * changing again. We can enable this once it has settled in T10 6441fd032eeSChristoph Hellwig * and is actually used by Linux/SCSI ML code. 6451fd032eeSChristoph Hellwig */ 6461fd032eeSChristoph Hellwig buf[4] = 0x00; 6471fd032eeSChristoph Hellwig 6481fd032eeSChristoph Hellwig /* 6491fd032eeSChristoph Hellwig * A TPU bit set to one indicates that the device server supports 6501fd032eeSChristoph Hellwig * the UNMAP command (see 5.25). A TPU bit set to zero indicates 6511fd032eeSChristoph Hellwig * that the device server does not support the UNMAP command. 6521fd032eeSChristoph Hellwig */ 6530fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpu != 0) 6541fd032eeSChristoph Hellwig buf[5] = 0x80; 6551fd032eeSChristoph Hellwig 6561fd032eeSChristoph Hellwig /* 6571fd032eeSChristoph Hellwig * A TPWS bit set to one indicates that the device server supports 6581fd032eeSChristoph Hellwig * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. 6591fd032eeSChristoph Hellwig * A TPWS bit set to zero indicates that the device server does not 6601fd032eeSChristoph Hellwig * support the use of the WRITE SAME (16) command to unmap LBAs. 6611fd032eeSChristoph Hellwig */ 6620fd97ccfSChristoph Hellwig if (dev->dev_attrib.emulate_tpws != 0) 663aa04dae4SNicholas Bellinger buf[5] |= 0x40 | 0x20; 6641fd032eeSChristoph Hellwig 665e6f41633SJamie Pocas /* 666e6f41633SJamie Pocas * The unmap_zeroes_data set means that the underlying device supports 6679305455aSBart Van Assche * REQ_OP_DISCARD and has the discard_zeroes_data bit set. This 6689305455aSBart Van Assche * satisfies the SBC requirements for LBPRZ, meaning that a subsequent 6699305455aSBart Van Assche * read will return zeroes after an UNMAP or WRITE SAME (16) to an LBA 670e6f41633SJamie Pocas * See sbc4r36 6.6.4. 671e6f41633SJamie Pocas */ 672e6f41633SJamie Pocas if (((dev->dev_attrib.emulate_tpu != 0) || 673e6f41633SJamie Pocas (dev->dev_attrib.emulate_tpws != 0)) && 674e6f41633SJamie Pocas (dev->dev_attrib.unmap_zeroes_data != 0)) 675e6f41633SJamie Pocas buf[5] |= 0x04; 676e6f41633SJamie Pocas 6771fd032eeSChristoph Hellwig return 0; 6781fd032eeSChristoph Hellwig } 6791fd032eeSChristoph Hellwig 680c66094bfSHannes Reinecke /* Referrals VPD page */ 681c66094bfSHannes Reinecke static sense_reason_t 682c66094bfSHannes Reinecke spc_emulate_evpd_b3(struct se_cmd *cmd, unsigned char *buf) 683c66094bfSHannes Reinecke { 684c66094bfSHannes Reinecke struct se_device *dev = cmd->se_dev; 685c66094bfSHannes Reinecke 686c66094bfSHannes Reinecke buf[0] = dev->transport->get_device_type(dev); 687c66094bfSHannes Reinecke buf[3] = 0x0c; 688c66094bfSHannes Reinecke put_unaligned_be32(dev->t10_alua.lba_map_segment_size, &buf[8]); 689096b4995SSebastian Herbszt put_unaligned_be32(dev->t10_alua.lba_map_segment_multiplier, &buf[12]); 690c66094bfSHannes Reinecke 691c66094bfSHannes Reinecke return 0; 692c66094bfSHannes Reinecke } 693c66094bfSHannes Reinecke 694de103c93SChristoph Hellwig static sense_reason_t 695de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); 6961fd032eeSChristoph Hellwig 6971fd032eeSChristoph Hellwig static struct { 6981fd032eeSChristoph Hellwig uint8_t page; 699de103c93SChristoph Hellwig sense_reason_t (*emulate)(struct se_cmd *, unsigned char *); 7001fd032eeSChristoph Hellwig } evpd_handlers[] = { 7011fd032eeSChristoph Hellwig { .page = 0x00, .emulate = spc_emulate_evpd_00 }, 7021fd032eeSChristoph Hellwig { .page = 0x80, .emulate = spc_emulate_evpd_80 }, 7031fd032eeSChristoph Hellwig { .page = 0x83, .emulate = spc_emulate_evpd_83 }, 7041fd032eeSChristoph Hellwig { .page = 0x86, .emulate = spc_emulate_evpd_86 }, 7051fd032eeSChristoph Hellwig { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, 7061fd032eeSChristoph Hellwig { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, 7071fd032eeSChristoph Hellwig { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, 708c66094bfSHannes Reinecke { .page = 0xb3, .emulate = spc_emulate_evpd_b3 }, 7091fd032eeSChristoph Hellwig }; 7101fd032eeSChristoph Hellwig 7111fd032eeSChristoph Hellwig /* supported vital product data pages */ 712de103c93SChristoph Hellwig static sense_reason_t 713de103c93SChristoph Hellwig spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) 7141fd032eeSChristoph Hellwig { 7151fd032eeSChristoph Hellwig int p; 7161fd032eeSChristoph Hellwig 7171fd032eeSChristoph Hellwig /* 7181fd032eeSChristoph Hellwig * Only report the INQUIRY EVPD=1 pages after a valid NAA 7191fd032eeSChristoph Hellwig * Registered Extended LUN WWN has been set via ConfigFS 7201fd032eeSChristoph Hellwig * during device creation/restart. 7211fd032eeSChristoph Hellwig */ 7220fd97ccfSChristoph Hellwig if (cmd->se_dev->dev_flags & DF_EMULATED_VPD_UNIT_SERIAL) { 7231fd032eeSChristoph Hellwig buf[3] = ARRAY_SIZE(evpd_handlers); 7241fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) 7251fd032eeSChristoph Hellwig buf[p + 4] = evpd_handlers[p].page; 7261fd032eeSChristoph Hellwig } 7271fd032eeSChristoph Hellwig 7281fd032eeSChristoph Hellwig return 0; 7291fd032eeSChristoph Hellwig } 7301fd032eeSChristoph Hellwig 731de103c93SChristoph Hellwig static sense_reason_t 732de103c93SChristoph Hellwig spc_emulate_inquiry(struct se_cmd *cmd) 7331fd032eeSChristoph Hellwig { 7341fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 735ffe7b0e9SPaolo Bonzini unsigned char *rbuf; 7361fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 737f82f320eSNicholas Bellinger unsigned char *buf; 738de103c93SChristoph Hellwig sense_reason_t ret; 739de103c93SChristoph Hellwig int p; 7402426bd45SRoland Dreier int len = 0; 7411fd032eeSChristoph Hellwig 742f82f320eSNicholas Bellinger buf = kzalloc(SE_INQUIRY_BUF, GFP_KERNEL); 743f82f320eSNicholas Bellinger if (!buf) { 744f82f320eSNicholas Bellinger pr_err("Unable to allocate response buffer for INQUIRY\n"); 745f82f320eSNicholas Bellinger return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 746f82f320eSNicholas Bellinger } 747dea5f099SNicholas Bellinger 7481fd032eeSChristoph Hellwig buf[0] = dev->transport->get_device_type(dev); 7491fd032eeSChristoph Hellwig 7501fd032eeSChristoph Hellwig if (!(cdb[1] & 0x1)) { 7511fd032eeSChristoph Hellwig if (cdb[2]) { 7521fd032eeSChristoph Hellwig pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", 7531fd032eeSChristoph Hellwig cdb[2]); 754de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7551fd032eeSChristoph Hellwig goto out; 7561fd032eeSChristoph Hellwig } 7571fd032eeSChristoph Hellwig 7581fd032eeSChristoph Hellwig ret = spc_emulate_inquiry_std(cmd, buf); 7592426bd45SRoland Dreier len = buf[4] + 5; 7601fd032eeSChristoph Hellwig goto out; 7611fd032eeSChristoph Hellwig } 7621fd032eeSChristoph Hellwig 7631fd032eeSChristoph Hellwig for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { 7641fd032eeSChristoph Hellwig if (cdb[2] == evpd_handlers[p].page) { 7651fd032eeSChristoph Hellwig buf[1] = cdb[2]; 7661fd032eeSChristoph Hellwig ret = evpd_handlers[p].emulate(cmd, buf); 7672426bd45SRoland Dreier len = get_unaligned_be16(&buf[2]) + 4; 7681fd032eeSChristoph Hellwig goto out; 7691fd032eeSChristoph Hellwig } 7701fd032eeSChristoph Hellwig } 7711fd032eeSChristoph Hellwig 7721fd032eeSChristoph Hellwig pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); 773de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 7741fd032eeSChristoph Hellwig 7751fd032eeSChristoph Hellwig out: 776ffe7b0e9SPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 77749df9fc9SNicholas Bellinger if (rbuf) { 778f82f320eSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_INQUIRY_BUF, cmd->data_length)); 7791fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 78049df9fc9SNicholas Bellinger } 781f82f320eSNicholas Bellinger kfree(buf); 7821fd032eeSChristoph Hellwig 7831fd032eeSChristoph Hellwig if (!ret) 78414b40c1eSHannes Reinecke target_complete_cmd_with_length(cmd, SAM_STAT_GOOD, len); 7851fd032eeSChristoph Hellwig return ret; 7861fd032eeSChristoph Hellwig } 7871fd032eeSChristoph Hellwig 788d45aca42SNicholas Bellinger static int spc_modesense_rwrecovery(struct se_cmd *cmd, u8 pc, u8 *p) 7891fd032eeSChristoph Hellwig { 7901fd032eeSChristoph Hellwig p[0] = 0x01; 7911fd032eeSChristoph Hellwig p[1] = 0x0a; 7921fd032eeSChristoph Hellwig 793d4b2b867SRoland Dreier /* No changeable values for now */ 794d4b2b867SRoland Dreier if (pc == 1) 795d4b2b867SRoland Dreier goto out; 796d4b2b867SRoland Dreier 797d4b2b867SRoland Dreier out: 7981fd032eeSChristoph Hellwig return 12; 7991fd032eeSChristoph Hellwig } 8001fd032eeSChristoph Hellwig 801d45aca42SNicholas Bellinger static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p) 8021fd032eeSChristoph Hellwig { 803d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 804d45aca42SNicholas Bellinger struct se_session *sess = cmd->se_sess; 805d45aca42SNicholas Bellinger 8061fd032eeSChristoph Hellwig p[0] = 0x0a; 8071fd032eeSChristoph Hellwig p[1] = 0x0a; 808d4b2b867SRoland Dreier 809d4b2b867SRoland Dreier /* No changeable values for now */ 810d4b2b867SRoland Dreier if (pc == 1) 811d4b2b867SRoland Dreier goto out; 812d4b2b867SRoland Dreier 8134e4937e8SSagi Grimberg /* GLTSD: No implicit save of log parameters */ 8144e4937e8SSagi Grimberg p[2] = (1 << 1); 8154e4937e8SSagi Grimberg if (target_sense_desc_format(dev)) 8164e4937e8SSagi Grimberg /* D_SENSE: Descriptor format sense data for 64bit sectors */ 8174e4937e8SSagi Grimberg p[2] |= (1 << 2); 8184e4937e8SSagi Grimberg 8191fd032eeSChristoph Hellwig /* 8201fd032eeSChristoph Hellwig * From spc4r23, 7.4.7 Control mode page 8211fd032eeSChristoph Hellwig * 8221fd032eeSChristoph Hellwig * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies 8231fd032eeSChristoph Hellwig * restrictions on the algorithm used for reordering commands 8241fd032eeSChristoph Hellwig * having the SIMPLE task attribute (see SAM-4). 8251fd032eeSChristoph Hellwig * 8261fd032eeSChristoph Hellwig * Table 368 -- QUEUE ALGORITHM MODIFIER field 8271fd032eeSChristoph Hellwig * Code Description 8281fd032eeSChristoph Hellwig * 0h Restricted reordering 8291fd032eeSChristoph Hellwig * 1h Unrestricted reordering allowed 8301fd032eeSChristoph Hellwig * 2h to 7h Reserved 8311fd032eeSChristoph Hellwig * 8h to Fh Vendor specific 8321fd032eeSChristoph Hellwig * 8331fd032eeSChristoph Hellwig * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that 8341fd032eeSChristoph Hellwig * the device server shall order the processing sequence of commands 8351fd032eeSChristoph Hellwig * having the SIMPLE task attribute such that data integrity is maintained 8361fd032eeSChristoph Hellwig * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol 8371fd032eeSChristoph Hellwig * requests is halted at any time, the final value of all data observable 8381fd032eeSChristoph Hellwig * on the medium shall be the same as if all the commands had been processed 8391fd032eeSChristoph Hellwig * with the ORDERED task attribute). 8401fd032eeSChristoph Hellwig * 8411fd032eeSChristoph Hellwig * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the 8421fd032eeSChristoph Hellwig * device server may reorder the processing sequence of commands having the 8431fd032eeSChristoph Hellwig * SIMPLE task attribute in any manner. Any data integrity exposures related to 8441fd032eeSChristoph Hellwig * command sequence order shall be explicitly handled by the application client 8451fd032eeSChristoph Hellwig * through the selection of appropriate ommands and task attributes. 8461fd032eeSChristoph Hellwig */ 8470fd97ccfSChristoph Hellwig p[3] = (dev->dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; 8481fd032eeSChristoph Hellwig /* 8491fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8501fd032eeSChristoph Hellwig * 8511fd032eeSChristoph Hellwig * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b 8521fd032eeSChristoph Hellwig * 8531fd032eeSChristoph Hellwig * 00b: The logical unit shall clear any unit attention condition 8541fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8551fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when a com- 8561fd032eeSChristoph Hellwig * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT 8571fd032eeSChristoph Hellwig * status. 8581fd032eeSChristoph Hellwig * 8591fd032eeSChristoph Hellwig * 10b: The logical unit shall not clear any unit attention condition 8601fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8611fd032eeSChristoph Hellwig * status and shall not establish a unit attention condition when 8621fd032eeSChristoph Hellwig * a command is completed with BUSY, TASK SET FULL, or RESERVATION 8631fd032eeSChristoph Hellwig * CONFLICT status. 8641fd032eeSChristoph Hellwig * 8651fd032eeSChristoph Hellwig * 11b a The logical unit shall not clear any unit attention condition 8661fd032eeSChristoph Hellwig * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION 8671fd032eeSChristoph Hellwig * status and shall establish a unit attention condition for the 8681fd032eeSChristoph Hellwig * initiator port associated with the I_T nexus on which the BUSY, 8691fd032eeSChristoph Hellwig * TASK SET FULL, or RESERVATION CONFLICT status is being returned. 8701fd032eeSChristoph Hellwig * Depending on the status, the additional sense code shall be set to 8711fd032eeSChristoph Hellwig * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS 8721fd032eeSChristoph Hellwig * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE 8731fd032eeSChristoph Hellwig * command, a unit attention condition shall be established only once 8741fd032eeSChristoph Hellwig * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless 8751fd032eeSChristoph Hellwig * to the number of commands completed with one of those status codes. 8761fd032eeSChristoph Hellwig */ 8771bf630fdSDavid Disseldorp switch (dev->dev_attrib.emulate_ua_intlck_ctrl) { 8781bf630fdSDavid Disseldorp case TARGET_UA_INTLCK_CTRL_ESTABLISH_UA: 8791bf630fdSDavid Disseldorp p[4] = 0x30; 8801bf630fdSDavid Disseldorp break; 8811bf630fdSDavid Disseldorp case TARGET_UA_INTLCK_CTRL_NO_CLEAR: 8821bf630fdSDavid Disseldorp p[4] = 0x20; 8831bf630fdSDavid Disseldorp break; 8841bf630fdSDavid Disseldorp default: /* TARGET_UA_INTLCK_CTRL_CLEAR */ 8851bf630fdSDavid Disseldorp p[4] = 0x00; 8861bf630fdSDavid Disseldorp break; 8871bf630fdSDavid Disseldorp } 8881fd032eeSChristoph Hellwig /* 8891fd032eeSChristoph Hellwig * From spc4r17, section 7.4.6 Control mode Page 8901fd032eeSChristoph Hellwig * 8911fd032eeSChristoph Hellwig * Task Aborted Status (TAS) bit set to zero. 8921fd032eeSChristoph Hellwig * 8931fd032eeSChristoph Hellwig * A task aborted status (TAS) bit set to zero specifies that aborted 8941fd032eeSChristoph Hellwig * tasks shall be terminated by the device server without any response 8951fd032eeSChristoph Hellwig * to the application client. A TAS bit set to one specifies that tasks 8961fd032eeSChristoph Hellwig * aborted by the actions of an I_T nexus other than the I_T nexus on 8971fd032eeSChristoph Hellwig * which the command was received shall be completed with TASK ABORTED 8981fd032eeSChristoph Hellwig * status (see SAM-4). 8991fd032eeSChristoph Hellwig */ 9000fd97ccfSChristoph Hellwig p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00; 9010c30f421SNicholas Bellinger /* 9020c30f421SNicholas Bellinger * From spc4r30, section 7.5.7 Control mode page 9030c30f421SNicholas Bellinger * 9040c30f421SNicholas Bellinger * Application Tag Owner (ATO) bit set to one. 9050c30f421SNicholas Bellinger * 9060c30f421SNicholas Bellinger * If the ATO bit is set to one the device server shall not modify the 9070c30f421SNicholas Bellinger * LOGICAL BLOCK APPLICATION TAG field and, depending on the protection 9080c30f421SNicholas Bellinger * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE 9090c30f421SNicholas Bellinger * TAG field. 9100c30f421SNicholas Bellinger */ 911d45aca42SNicholas Bellinger if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) { 9129ef5466eSNicholas Bellinger if (dev->dev_attrib.pi_prot_type || sess->sess_prot_type) 9130c30f421SNicholas Bellinger p[5] |= 0x80; 914d45aca42SNicholas Bellinger } 9150c30f421SNicholas Bellinger 9161fd032eeSChristoph Hellwig p[8] = 0xff; 9171fd032eeSChristoph Hellwig p[9] = 0xff; 9181fd032eeSChristoph Hellwig p[11] = 30; 9191fd032eeSChristoph Hellwig 920d4b2b867SRoland Dreier out: 9211fd032eeSChristoph Hellwig return 12; 9221fd032eeSChristoph Hellwig } 9231fd032eeSChristoph Hellwig 924d45aca42SNicholas Bellinger static int spc_modesense_caching(struct se_cmd *cmd, u8 pc, u8 *p) 9251fd032eeSChristoph Hellwig { 926d45aca42SNicholas Bellinger struct se_device *dev = cmd->se_dev; 927d45aca42SNicholas Bellinger 9281fd032eeSChristoph Hellwig p[0] = 0x08; 9291fd032eeSChristoph Hellwig p[1] = 0x12; 930d4b2b867SRoland Dreier 931d4b2b867SRoland Dreier /* No changeable values for now */ 932d4b2b867SRoland Dreier if (pc == 1) 933d4b2b867SRoland Dreier goto out; 934d4b2b867SRoland Dreier 935814e5b45SChristoph Hellwig if (target_check_wce(dev)) 9361fd032eeSChristoph Hellwig p[2] = 0x04; /* Write Cache Enable */ 9371fd032eeSChristoph Hellwig p[12] = 0x20; /* Disabled Read Ahead */ 9381fd032eeSChristoph Hellwig 939d4b2b867SRoland Dreier out: 9401fd032eeSChristoph Hellwig return 20; 9411fd032eeSChristoph Hellwig } 9421fd032eeSChristoph Hellwig 943d45aca42SNicholas Bellinger static int spc_modesense_informational_exceptions(struct se_cmd *cmd, u8 pc, unsigned char *p) 9440f6d64ceSRoland Dreier { 9450f6d64ceSRoland Dreier p[0] = 0x1c; 9460f6d64ceSRoland Dreier p[1] = 0x0a; 9470f6d64ceSRoland Dreier 9480f6d64ceSRoland Dreier /* No changeable values for now */ 9490f6d64ceSRoland Dreier if (pc == 1) 9500f6d64ceSRoland Dreier goto out; 9510f6d64ceSRoland Dreier 9520f6d64ceSRoland Dreier out: 9530f6d64ceSRoland Dreier return 12; 9540f6d64ceSRoland Dreier } 9550f6d64ceSRoland Dreier 956d4b2b867SRoland Dreier static struct { 957d4b2b867SRoland Dreier uint8_t page; 958d4b2b867SRoland Dreier uint8_t subpage; 959d45aca42SNicholas Bellinger int (*emulate)(struct se_cmd *, u8, unsigned char *); 960d4b2b867SRoland Dreier } modesense_handlers[] = { 961d4b2b867SRoland Dreier { .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery }, 962d4b2b867SRoland Dreier { .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching }, 963d4b2b867SRoland Dreier { .page = 0x0a, .subpage = 0x00, .emulate = spc_modesense_control }, 9640f6d64ceSRoland Dreier { .page = 0x1c, .subpage = 0x00, .emulate = spc_modesense_informational_exceptions }, 965d4b2b867SRoland Dreier }; 966d4b2b867SRoland Dreier 9671fd032eeSChristoph Hellwig static void spc_modesense_write_protect(unsigned char *buf, int type) 9681fd032eeSChristoph Hellwig { 9691fd032eeSChristoph Hellwig /* 9701fd032eeSChristoph Hellwig * I believe that the WP bit (bit 7) in the mode header is the same for 9711fd032eeSChristoph Hellwig * all device types.. 9721fd032eeSChristoph Hellwig */ 9731fd032eeSChristoph Hellwig switch (type) { 9741fd032eeSChristoph Hellwig case TYPE_DISK: 9751fd032eeSChristoph Hellwig case TYPE_TAPE: 9761fd032eeSChristoph Hellwig default: 9771fd032eeSChristoph Hellwig buf[0] |= 0x80; /* WP bit */ 9781fd032eeSChristoph Hellwig break; 9791fd032eeSChristoph Hellwig } 9801fd032eeSChristoph Hellwig } 9811fd032eeSChristoph Hellwig 9821fd032eeSChristoph Hellwig static void spc_modesense_dpofua(unsigned char *buf, int type) 9831fd032eeSChristoph Hellwig { 9841fd032eeSChristoph Hellwig switch (type) { 9851fd032eeSChristoph Hellwig case TYPE_DISK: 9861fd032eeSChristoph Hellwig buf[0] |= 0x10; /* DPOFUA bit */ 9871fd032eeSChristoph Hellwig break; 9881fd032eeSChristoph Hellwig default: 9891fd032eeSChristoph Hellwig break; 9901fd032eeSChristoph Hellwig } 9911fd032eeSChristoph Hellwig } 9921fd032eeSChristoph Hellwig 993d4b2b867SRoland Dreier static int spc_modesense_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 994d4b2b867SRoland Dreier { 995d4b2b867SRoland Dreier *buf++ = 8; 996d4b2b867SRoland Dreier put_unaligned_be32(min(blocks, 0xffffffffull), buf); 997d4b2b867SRoland Dreier buf += 4; 998d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 999d4b2b867SRoland Dreier return 9; 1000d4b2b867SRoland Dreier } 1001d4b2b867SRoland Dreier 1002d4b2b867SRoland Dreier static int spc_modesense_long_blockdesc(unsigned char *buf, u64 blocks, u32 block_size) 1003d4b2b867SRoland Dreier { 1004d4b2b867SRoland Dreier if (blocks <= 0xffffffff) 1005d4b2b867SRoland Dreier return spc_modesense_blockdesc(buf + 3, blocks, block_size) + 3; 1006d4b2b867SRoland Dreier 1007d4b2b867SRoland Dreier *buf++ = 1; /* LONGLBA */ 1008d4b2b867SRoland Dreier buf += 2; 1009d4b2b867SRoland Dreier *buf++ = 16; 1010d4b2b867SRoland Dreier put_unaligned_be64(blocks, buf); 1011d4b2b867SRoland Dreier buf += 12; 1012d4b2b867SRoland Dreier put_unaligned_be32(block_size, buf); 1013d4b2b867SRoland Dreier 1014d4b2b867SRoland Dreier return 17; 1015d4b2b867SRoland Dreier } 1016d4b2b867SRoland Dreier 1017de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modesense(struct se_cmd *cmd) 10181fd032eeSChristoph Hellwig { 10191fd032eeSChristoph Hellwig struct se_device *dev = cmd->se_dev; 10201fd032eeSChristoph Hellwig char *cdb = cmd->t_task_cdb; 1021cab9609bSNicholas Bellinger unsigned char buf[SE_MODE_PAGE_BUF], *rbuf; 10221fd032eeSChristoph Hellwig int type = dev->transport->get_device_type(dev); 10231fd032eeSChristoph Hellwig int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); 1024d4b2b867SRoland Dreier bool dbd = !!(cdb[1] & 0x08); 1025d4b2b867SRoland Dreier bool llba = ten ? !!(cdb[1] & 0x10) : false; 1026d4b2b867SRoland Dreier u8 pc = cdb[2] >> 6; 1027d4b2b867SRoland Dreier u8 page = cdb[2] & 0x3f; 1028d4b2b867SRoland Dreier u8 subpage = cdb[3]; 10291fd032eeSChristoph Hellwig int length = 0; 1030d4b2b867SRoland Dreier int ret; 1031d4b2b867SRoland Dreier int i; 10321fd032eeSChristoph Hellwig 1033cab9609bSNicholas Bellinger memset(buf, 0, SE_MODE_PAGE_BUF); 1034cab9609bSNicholas Bellinger 1035fecae40aSNicholas Bellinger /* 1036fecae40aSNicholas Bellinger * Skip over MODE DATA LENGTH + MEDIUM TYPE fields to byte 3 for 1037fecae40aSNicholas Bellinger * MODE_SENSE_10 and byte 2 for MODE_SENSE (6). 1038fecae40aSNicholas Bellinger */ 1039fecae40aSNicholas Bellinger length = ten ? 3 : 2; 1040d4b2b867SRoland Dreier 1041d4b2b867SRoland Dreier /* DEVICE-SPECIFIC PARAMETER */ 104203a68b44SAndy Grover if (cmd->se_lun->lun_access_ro || target_lun_is_rdonly(cmd)) 1043d4b2b867SRoland Dreier spc_modesense_write_protect(&buf[length], type); 1044d4b2b867SRoland Dreier 1045814e5b45SChristoph Hellwig /* 1046814e5b45SChristoph Hellwig * SBC only allows us to enable FUA and DPO together. Fortunately 1047814e5b45SChristoph Hellwig * DPO is explicitly specified as a hint, so a noop is a perfectly 1048814e5b45SChristoph Hellwig * valid implementation. 1049814e5b45SChristoph Hellwig */ 1050814e5b45SChristoph Hellwig if (target_check_fua(dev)) 1051d4b2b867SRoland Dreier spc_modesense_dpofua(&buf[length], type); 1052d4b2b867SRoland Dreier 1053d4b2b867SRoland Dreier ++length; 1054d4b2b867SRoland Dreier 1055d4b2b867SRoland Dreier /* BLOCK DESCRIPTOR */ 1056d4b2b867SRoland Dreier 1057d4b2b867SRoland Dreier /* 1058d4b2b867SRoland Dreier * For now we only include a block descriptor for disk (SBC) 1059d4b2b867SRoland Dreier * devices; other command sets use a slightly different format. 1060d4b2b867SRoland Dreier */ 1061d4b2b867SRoland Dreier if (!dbd && type == TYPE_DISK) { 1062d4b2b867SRoland Dreier u64 blocks = dev->transport->get_blocks(dev); 1063d4b2b867SRoland Dreier u32 block_size = dev->dev_attrib.block_size; 10641fd032eeSChristoph Hellwig 10651fd032eeSChristoph Hellwig if (ten) { 1066d4b2b867SRoland Dreier if (llba) { 1067d4b2b867SRoland Dreier length += spc_modesense_long_blockdesc(&buf[length], 1068d4b2b867SRoland Dreier blocks, block_size); 10691fd032eeSChristoph Hellwig } else { 1070d4b2b867SRoland Dreier length += 3; 1071d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], 1072d4b2b867SRoland Dreier blocks, block_size); 1073d4b2b867SRoland Dreier } 1074d4b2b867SRoland Dreier } else { 1075d4b2b867SRoland Dreier length += spc_modesense_blockdesc(&buf[length], blocks, 1076d4b2b867SRoland Dreier block_size); 1077d4b2b867SRoland Dreier } 1078d4b2b867SRoland Dreier } else { 1079d4b2b867SRoland Dreier if (ten) 1080d4b2b867SRoland Dreier length += 4; 1081d4b2b867SRoland Dreier else 1082d4b2b867SRoland Dreier length += 1; 10831fd032eeSChristoph Hellwig } 10841fd032eeSChristoph Hellwig 1085d4b2b867SRoland Dreier if (page == 0x3f) { 1086d4b2b867SRoland Dreier if (subpage != 0x00 && subpage != 0xff) { 1087de103c93SChristoph Hellwig pr_warn("MODE_SENSE: Invalid subpage code: 0x%02x\n", subpage); 1088de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 1089d4b2b867SRoland Dreier } 1090d4b2b867SRoland Dreier 1091d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) { 1092d4b2b867SRoland Dreier /* 1093d4b2b867SRoland Dreier * Tricky way to say all subpage 00h for 1094d4b2b867SRoland Dreier * subpage==0, all subpages for subpage==0xff 1095d4b2b867SRoland Dreier * (and we just checked above that those are 1096d4b2b867SRoland Dreier * the only two possibilities). 1097d4b2b867SRoland Dreier */ 1098d4b2b867SRoland Dreier if ((modesense_handlers[i].subpage & ~subpage) == 0) { 1099d45aca42SNicholas Bellinger ret = modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1100d4b2b867SRoland Dreier if (!ten && length + ret >= 255) 1101d4b2b867SRoland Dreier break; 1102d4b2b867SRoland Dreier length += ret; 1103d4b2b867SRoland Dreier } 1104d4b2b867SRoland Dreier } 1105d4b2b867SRoland Dreier 1106d4b2b867SRoland Dreier goto set_length; 1107d4b2b867SRoland Dreier } 1108d4b2b867SRoland Dreier 1109d4b2b867SRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 1110d4b2b867SRoland Dreier if (modesense_handlers[i].page == page && 1111d4b2b867SRoland Dreier modesense_handlers[i].subpage == subpage) { 1112d45aca42SNicholas Bellinger length += modesense_handlers[i].emulate(cmd, pc, &buf[length]); 1113d4b2b867SRoland Dreier goto set_length; 1114d4b2b867SRoland Dreier } 1115d4b2b867SRoland Dreier 1116d4b2b867SRoland Dreier /* 1117d4b2b867SRoland Dreier * We don't intend to implement: 1118d4b2b867SRoland Dreier * - obsolete page 03h "format parameters" (checked by Solaris) 1119d4b2b867SRoland Dreier */ 1120d4b2b867SRoland Dreier if (page != 0x03) 1121d4b2b867SRoland Dreier pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", 1122d4b2b867SRoland Dreier page, subpage); 1123d4b2b867SRoland Dreier 1124de103c93SChristoph Hellwig return TCM_UNKNOWN_MODE_PAGE; 1125d4b2b867SRoland Dreier 1126d4b2b867SRoland Dreier set_length: 1127d4b2b867SRoland Dreier if (ten) 1128d4b2b867SRoland Dreier put_unaligned_be16(length - 2, buf); 1129d4b2b867SRoland Dreier else 1130d4b2b867SRoland Dreier buf[0] = length - 1; 1131d4b2b867SRoland Dreier 1132cab9609bSNicholas Bellinger rbuf = transport_kmap_data_sg(cmd); 1133cab9609bSNicholas Bellinger if (rbuf) { 1134cab9609bSNicholas Bellinger memcpy(rbuf, buf, min_t(u32, SE_MODE_PAGE_BUF, cmd->data_length)); 1135cab9609bSNicholas Bellinger transport_kunmap_data_sg(cmd); 1136d4b2b867SRoland Dreier } 1137d4b2b867SRoland Dreier 113814b40c1eSHannes Reinecke target_complete_cmd_with_length(cmd, SAM_STAT_GOOD, length); 11391fd032eeSChristoph Hellwig return 0; 11401fd032eeSChristoph Hellwig } 11411fd032eeSChristoph Hellwig 1142de103c93SChristoph Hellwig static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd) 11433a3c5e4aSRoland Dreier { 11443a3c5e4aSRoland Dreier char *cdb = cmd->t_task_cdb; 11453a3c5e4aSRoland Dreier bool ten = cdb[0] == MODE_SELECT_10; 11463a3c5e4aSRoland Dreier int off = ten ? 8 : 4; 11473a3c5e4aSRoland Dreier bool pf = !!(cdb[1] & 0x10); 11483a3c5e4aSRoland Dreier u8 page, subpage; 11493a3c5e4aSRoland Dreier unsigned char *buf; 11503a3c5e4aSRoland Dreier unsigned char tbuf[SE_MODE_PAGE_BUF]; 11513a3c5e4aSRoland Dreier int length; 11523abff1e5SChristoph Hellwig sense_reason_t ret = 0; 11533a3c5e4aSRoland Dreier int i; 11543a3c5e4aSRoland Dreier 115571f41fe1SRoland Dreier if (!cmd->data_length) { 115614b40c1eSHannes Reinecke target_complete_cmd(cmd, SAM_STAT_GOOD); 115771f41fe1SRoland Dreier return 0; 115871f41fe1SRoland Dreier } 115971f41fe1SRoland Dreier 116071f41fe1SRoland Dreier if (cmd->data_length < off + 2) 116171f41fe1SRoland Dreier return TCM_PARAMETER_LIST_LENGTH_ERROR; 116271f41fe1SRoland Dreier 11633a3c5e4aSRoland Dreier buf = transport_kmap_data_sg(cmd); 1164de103c93SChristoph Hellwig if (!buf) 1165de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 11663a3c5e4aSRoland Dreier 11673a3c5e4aSRoland Dreier if (!pf) { 1168de103c93SChristoph Hellwig ret = TCM_INVALID_CDB_FIELD; 11693a3c5e4aSRoland Dreier goto out; 11703a3c5e4aSRoland Dreier } 11713a3c5e4aSRoland Dreier 11723a3c5e4aSRoland Dreier page = buf[off] & 0x3f; 11733a3c5e4aSRoland Dreier subpage = buf[off] & 0x40 ? buf[off + 1] : 0; 11743a3c5e4aSRoland Dreier 11753a3c5e4aSRoland Dreier for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i) 11763a3c5e4aSRoland Dreier if (modesense_handlers[i].page == page && 11773a3c5e4aSRoland Dreier modesense_handlers[i].subpage == subpage) { 11783a3c5e4aSRoland Dreier memset(tbuf, 0, SE_MODE_PAGE_BUF); 1179d45aca42SNicholas Bellinger length = modesense_handlers[i].emulate(cmd, 0, tbuf); 11803a3c5e4aSRoland Dreier goto check_contents; 11813a3c5e4aSRoland Dreier } 11823a3c5e4aSRoland Dreier 1183de103c93SChristoph Hellwig ret = TCM_UNKNOWN_MODE_PAGE; 11843a3c5e4aSRoland Dreier goto out; 11853a3c5e4aSRoland Dreier 11863a3c5e4aSRoland Dreier check_contents: 118771f41fe1SRoland Dreier if (cmd->data_length < off + length) { 118871f41fe1SRoland Dreier ret = TCM_PARAMETER_LIST_LENGTH_ERROR; 118971f41fe1SRoland Dreier goto out; 119071f41fe1SRoland Dreier } 119171f41fe1SRoland Dreier 1192de103c93SChristoph Hellwig if (memcmp(buf + off, tbuf, length)) 1193de103c93SChristoph Hellwig ret = TCM_INVALID_PARAMETER_LIST; 11943a3c5e4aSRoland Dreier 11953a3c5e4aSRoland Dreier out: 11963a3c5e4aSRoland Dreier transport_kunmap_data_sg(cmd); 11973a3c5e4aSRoland Dreier 11983a3c5e4aSRoland Dreier if (!ret) 119914b40c1eSHannes Reinecke target_complete_cmd(cmd, SAM_STAT_GOOD); 12003a3c5e4aSRoland Dreier return ret; 12013a3c5e4aSRoland Dreier } 12023a3c5e4aSRoland Dreier 1203de103c93SChristoph Hellwig static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd) 12041fd032eeSChristoph Hellwig { 12051fd032eeSChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 120632a8811fSPaolo Bonzini unsigned char *rbuf; 12071fd032eeSChristoph Hellwig u8 ua_asc = 0, ua_ascq = 0; 120832a8811fSPaolo Bonzini unsigned char buf[SE_SENSE_BUF]; 12094e4937e8SSagi Grimberg bool desc_format = target_sense_desc_format(cmd->se_dev); 121032a8811fSPaolo Bonzini 121132a8811fSPaolo Bonzini memset(buf, 0, SE_SENSE_BUF); 12121fd032eeSChristoph Hellwig 12131fd032eeSChristoph Hellwig if (cdb[1] & 0x01) { 12141fd032eeSChristoph Hellwig pr_err("REQUEST_SENSE description emulation not" 12151fd032eeSChristoph Hellwig " supported\n"); 1216de103c93SChristoph Hellwig return TCM_INVALID_CDB_FIELD; 12171fd032eeSChristoph Hellwig } 12181fd032eeSChristoph Hellwig 121932a8811fSPaolo Bonzini rbuf = transport_kmap_data_sg(cmd); 1220de103c93SChristoph Hellwig if (!rbuf) 1221de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1222de103c93SChristoph Hellwig 12239ec1e1ceSSagi Grimberg if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) 12244e4937e8SSagi Grimberg scsi_build_sense_buffer(desc_format, buf, UNIT_ATTENTION, 12259ec1e1ceSSagi Grimberg ua_asc, ua_ascq); 12269ec1e1ceSSagi Grimberg else 12274e4937e8SSagi Grimberg scsi_build_sense_buffer(desc_format, buf, NO_SENSE, 0x0, 0x0); 12281fd032eeSChristoph Hellwig 122932a8811fSPaolo Bonzini memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); 12301fd032eeSChristoph Hellwig transport_kunmap_data_sg(cmd); 123132a8811fSPaolo Bonzini 123214b40c1eSHannes Reinecke target_complete_cmd(cmd, SAM_STAT_GOOD); 12331fd032eeSChristoph Hellwig return 0; 12341fd032eeSChristoph Hellwig } 12351fd032eeSChristoph Hellwig 1236de103c93SChristoph Hellwig sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd) 1237d1b1f805SChristoph Hellwig { 1238d1b1f805SChristoph Hellwig struct se_dev_entry *deve; 1239d1b1f805SChristoph Hellwig struct se_session *sess = cmd->se_sess; 124029a05deeSNicholas Bellinger struct se_node_acl *nacl; 12410f69a387SRoland Dreier struct scsi_lun slun; 1242d1b1f805SChristoph Hellwig unsigned char *buf; 124329a05deeSNicholas Bellinger u32 lun_count = 0, offset = 8; 12440f69a387SRoland Dreier __be32 len; 1245d1b1f805SChristoph Hellwig 1246d1b1f805SChristoph Hellwig buf = transport_kmap_data_sg(cmd); 12470f69a387SRoland Dreier if (cmd->data_length && !buf) 1248de103c93SChristoph Hellwig return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1249d1b1f805SChristoph Hellwig 1250d1b1f805SChristoph Hellwig /* 1251d1b1f805SChristoph Hellwig * If no struct se_session pointer is present, this struct se_cmd is 1252d1b1f805SChristoph Hellwig * coming via a target_core_mod PASSTHROUGH op, and not through 1253d1b1f805SChristoph Hellwig * a $FABRIC_MOD. In that case, report LUN=0 only. 1254d1b1f805SChristoph Hellwig */ 12559c395170SRoland Dreier if (!sess) 1256d1b1f805SChristoph Hellwig goto done; 12579c395170SRoland Dreier 125829a05deeSNicholas Bellinger nacl = sess->se_node_acl; 1259d1b1f805SChristoph Hellwig 126029a05deeSNicholas Bellinger rcu_read_lock(); 126129a05deeSNicholas Bellinger hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { 1262d1b1f805SChristoph Hellwig /* 1263d1b1f805SChristoph Hellwig * We determine the correct LUN LIST LENGTH even once we 1264d1b1f805SChristoph Hellwig * have reached the initial allocation length. 1265d1b1f805SChristoph Hellwig * See SPC2-R20 7.19. 1266d1b1f805SChristoph Hellwig */ 1267d1b1f805SChristoph Hellwig lun_count++; 12680f69a387SRoland Dreier if (offset >= cmd->data_length) 1269d1b1f805SChristoph Hellwig continue; 1270d1b1f805SChristoph Hellwig 12710f69a387SRoland Dreier int_to_scsilun(deve->mapped_lun, &slun); 12720f69a387SRoland Dreier memcpy(buf + offset, &slun, 12730f69a387SRoland Dreier min(8u, cmd->data_length - offset)); 1274d1b1f805SChristoph Hellwig offset += 8; 1275d1b1f805SChristoph Hellwig } 127629a05deeSNicholas Bellinger rcu_read_unlock(); 1277d1b1f805SChristoph Hellwig 1278d1b1f805SChristoph Hellwig /* 1279d1b1f805SChristoph Hellwig * See SPC3 r07, page 159. 1280d1b1f805SChristoph Hellwig */ 1281d1b1f805SChristoph Hellwig done: 12829c395170SRoland Dreier /* 12839c395170SRoland Dreier * If no LUNs are accessible, report virtual LUN 0. 12849c395170SRoland Dreier */ 12859c395170SRoland Dreier if (lun_count == 0) { 12860f69a387SRoland Dreier int_to_scsilun(0, &slun); 12870f69a387SRoland Dreier if (cmd->data_length > 8) 12880f69a387SRoland Dreier memcpy(buf + offset, &slun, 12890f69a387SRoland Dreier min(8u, cmd->data_length - offset)); 12909c395170SRoland Dreier lun_count = 1; 12919c395170SRoland Dreier } 12929c395170SRoland Dreier 12930f69a387SRoland Dreier if (buf) { 12940f69a387SRoland Dreier len = cpu_to_be32(lun_count * 8); 12950f69a387SRoland Dreier memcpy(buf, &len, min_t(int, sizeof len, cmd->data_length)); 1296d1b1f805SChristoph Hellwig transport_kunmap_data_sg(cmd); 12970f69a387SRoland Dreier } 1298d1b1f805SChristoph Hellwig 129914b40c1eSHannes Reinecke target_complete_cmd_with_length(cmd, SAM_STAT_GOOD, 8 + lun_count * 8); 1300d1b1f805SChristoph Hellwig return 0; 1301d1b1f805SChristoph Hellwig } 13028de530a5SChristoph Hellwig EXPORT_SYMBOL(spc_emulate_report_luns); 1303d1b1f805SChristoph Hellwig 1304de103c93SChristoph Hellwig static sense_reason_t 1305de103c93SChristoph Hellwig spc_emulate_testunitready(struct se_cmd *cmd) 13061fd032eeSChristoph Hellwig { 130714b40c1eSHannes Reinecke target_complete_cmd(cmd, SAM_STAT_GOOD); 13081fd032eeSChristoph Hellwig return 0; 13091fd032eeSChristoph Hellwig } 13101fd032eeSChristoph Hellwig 1311de103c93SChristoph Hellwig sense_reason_t 1312de103c93SChristoph Hellwig spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) 131388455ec4SChristoph Hellwig { 1314eba2ca45SNicholas Bellinger struct se_device *dev = cmd->se_dev; 131588455ec4SChristoph Hellwig unsigned char *cdb = cmd->t_task_cdb; 131688455ec4SChristoph Hellwig 1317b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr && 1318b49d6f78SDavid Disseldorp ((cdb[0] == PERSISTENT_RESERVE_IN) || 1319b49d6f78SDavid Disseldorp (cdb[0] == PERSISTENT_RESERVE_OUT) || 1320b49d6f78SDavid Disseldorp (cdb[0] == RELEASE || cdb[0] == RELEASE_10) || 1321b49d6f78SDavid Disseldorp (cdb[0] == RESERVE || cdb[0] == RESERVE_10))) { 1322b49d6f78SDavid Disseldorp return TCM_UNSUPPORTED_SCSI_OPCODE; 1323b49d6f78SDavid Disseldorp } 1324b49d6f78SDavid Disseldorp 132588455ec4SChristoph Hellwig switch (cdb[0]) { 132688455ec4SChristoph Hellwig case MODE_SELECT: 132788455ec4SChristoph Hellwig *size = cdb[4]; 13283a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 132988455ec4SChristoph Hellwig break; 133088455ec4SChristoph Hellwig case MODE_SELECT_10: 1331a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 13323a3c5e4aSRoland Dreier cmd->execute_cmd = spc_emulate_modeselect; 133388455ec4SChristoph Hellwig break; 133488455ec4SChristoph Hellwig case MODE_SENSE: 133588455ec4SChristoph Hellwig *size = cdb[4]; 13361fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 133788455ec4SChristoph Hellwig break; 133888455ec4SChristoph Hellwig case MODE_SENSE_10: 1339a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 13401fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_modesense; 134188455ec4SChristoph Hellwig break; 134288455ec4SChristoph Hellwig case LOG_SELECT: 134388455ec4SChristoph Hellwig case LOG_SENSE: 1344a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 134588455ec4SChristoph Hellwig break; 134688455ec4SChristoph Hellwig case PERSISTENT_RESERVE_IN: 1347a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 1348d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_in; 134988455ec4SChristoph Hellwig break; 135088455ec4SChristoph Hellwig case PERSISTENT_RESERVE_OUT: 1351388fe699STang Wenji *size = get_unaligned_be32(&cdb[5]); 1352d977f437SChristoph Hellwig cmd->execute_cmd = target_scsi3_emulate_pr_out; 135388455ec4SChristoph Hellwig break; 135488455ec4SChristoph Hellwig case RELEASE: 135588455ec4SChristoph Hellwig case RELEASE_10: 135688455ec4SChristoph Hellwig if (cdb[0] == RELEASE_10) 1357a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 135888455ec4SChristoph Hellwig else 135988455ec4SChristoph Hellwig *size = cmd->data_length; 136088455ec4SChristoph Hellwig 136188455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_release; 136288455ec4SChristoph Hellwig break; 136388455ec4SChristoph Hellwig case RESERVE: 136488455ec4SChristoph Hellwig case RESERVE_10: 136588455ec4SChristoph Hellwig /* 136688455ec4SChristoph Hellwig * The SPC-2 RESERVE does not contain a size in the SCSI CDB. 136788455ec4SChristoph Hellwig * Assume the passthrough or $FABRIC_MOD will tell us about it. 136888455ec4SChristoph Hellwig */ 136988455ec4SChristoph Hellwig if (cdb[0] == RESERVE_10) 1370a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[7]); 137188455ec4SChristoph Hellwig else 137288455ec4SChristoph Hellwig *size = cmd->data_length; 137388455ec4SChristoph Hellwig 137488455ec4SChristoph Hellwig cmd->execute_cmd = target_scsi2_reservation_reserve; 137588455ec4SChristoph Hellwig break; 137688455ec4SChristoph Hellwig case REQUEST_SENSE: 137788455ec4SChristoph Hellwig *size = cdb[4]; 13781fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_request_sense; 137988455ec4SChristoph Hellwig break; 138088455ec4SChristoph Hellwig case INQUIRY: 1381a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[3]); 138288455ec4SChristoph Hellwig 138388455ec4SChristoph Hellwig /* 1384125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for INQUIRY. 138588455ec4SChristoph Hellwig * See spc4r17 section 5.3 138688455ec4SChristoph Hellwig */ 138768d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 13881fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_inquiry; 138988455ec4SChristoph Hellwig break; 139088455ec4SChristoph Hellwig case SECURITY_PROTOCOL_IN: 139188455ec4SChristoph Hellwig case SECURITY_PROTOCOL_OUT: 1392a85d667eSBart Van Assche *size = get_unaligned_be32(&cdb[6]); 139388455ec4SChristoph Hellwig break; 139488455ec4SChristoph Hellwig case EXTENDED_COPY: 139504b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 139604b1b795SNicholas Bellinger cmd->execute_cmd = target_do_xcopy; 139704b1b795SNicholas Bellinger break; 139888455ec4SChristoph Hellwig case RECEIVE_COPY_RESULTS: 139904b1b795SNicholas Bellinger *size = get_unaligned_be32(&cdb[10]); 140004b1b795SNicholas Bellinger cmd->execute_cmd = target_do_receive_copy_results; 140104b1b795SNicholas Bellinger break; 140204b1b795SNicholas Bellinger case READ_ATTRIBUTE: 140388455ec4SChristoph Hellwig case WRITE_ATTRIBUTE: 1404a85d667eSBart Van Assche *size = get_unaligned_be32(&cdb[10]); 140588455ec4SChristoph Hellwig break; 140688455ec4SChristoph Hellwig case RECEIVE_DIAGNOSTIC: 140788455ec4SChristoph Hellwig case SEND_DIAGNOSTIC: 1408a85d667eSBart Van Assche *size = get_unaligned_be16(&cdb[3]); 140988455ec4SChristoph Hellwig break; 141088455ec4SChristoph Hellwig case WRITE_BUFFER: 1411a85d667eSBart Van Assche *size = get_unaligned_be24(&cdb[6]); 141288455ec4SChristoph Hellwig break; 141388455ec4SChristoph Hellwig case REPORT_LUNS: 1414d1b1f805SChristoph Hellwig cmd->execute_cmd = spc_emulate_report_luns; 1415a85d667eSBart Van Assche *size = get_unaligned_be32(&cdb[6]); 141688455ec4SChristoph Hellwig /* 1417125d0119SHannes Reinecke * Do implicit HEAD_OF_QUEUE processing for REPORT_LUNS 141888455ec4SChristoph Hellwig * See spc4r17 section 5.3 141988455ec4SChristoph Hellwig */ 142068d81f40SChristoph Hellwig cmd->sam_task_attr = TCM_HEAD_TAG; 142188455ec4SChristoph Hellwig break; 142288455ec4SChristoph Hellwig case TEST_UNIT_READY: 14231fd032eeSChristoph Hellwig cmd->execute_cmd = spc_emulate_testunitready; 1424d6e0175cSChristoph Hellwig *size = 0; 142588455ec4SChristoph Hellwig break; 1426eba2ca45SNicholas Bellinger case MAINTENANCE_IN: 1427eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1428eba2ca45SNicholas Bellinger /* 1429eba2ca45SNicholas Bellinger * MAINTENANCE_IN from SCC-2 1430eba2ca45SNicholas Bellinger * Check for emulated MI_REPORT_TARGET_PGS 1431eba2ca45SNicholas Bellinger */ 1432c87fbd56SChristoph Hellwig if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS) { 1433eba2ca45SNicholas Bellinger cmd->execute_cmd = 1434eba2ca45SNicholas Bellinger target_emulate_report_target_port_groups; 1435eba2ca45SNicholas Bellinger } 1436eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1437eba2ca45SNicholas Bellinger } else { 1438eba2ca45SNicholas Bellinger /* 1439eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1440eba2ca45SNicholas Bellinger */ 1441eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1442eba2ca45SNicholas Bellinger } 1443eba2ca45SNicholas Bellinger break; 1444eba2ca45SNicholas Bellinger case MAINTENANCE_OUT: 1445eba2ca45SNicholas Bellinger if (dev->transport->get_device_type(dev) != TYPE_ROM) { 1446eba2ca45SNicholas Bellinger /* 1447eba2ca45SNicholas Bellinger * MAINTENANCE_OUT from SCC-2 1448eba2ca45SNicholas Bellinger * Check for emulated MO_SET_TARGET_PGS. 1449eba2ca45SNicholas Bellinger */ 1450c87fbd56SChristoph Hellwig if (cdb[1] == MO_SET_TARGET_PGS) { 1451eba2ca45SNicholas Bellinger cmd->execute_cmd = 1452eba2ca45SNicholas Bellinger target_emulate_set_target_port_groups; 1453eba2ca45SNicholas Bellinger } 1454eba2ca45SNicholas Bellinger *size = get_unaligned_be32(&cdb[6]); 1455eba2ca45SNicholas Bellinger } else { 1456eba2ca45SNicholas Bellinger /* 1457eba2ca45SNicholas Bellinger * GPCMD_SEND_KEY from multi media commands 1458eba2ca45SNicholas Bellinger */ 1459eba2ca45SNicholas Bellinger *size = get_unaligned_be16(&cdb[8]); 1460eba2ca45SNicholas Bellinger } 1461eba2ca45SNicholas Bellinger break; 146288455ec4SChristoph Hellwig default: 1463de103c93SChristoph Hellwig return TCM_UNSUPPORTED_SCSI_OPCODE; 146488455ec4SChristoph Hellwig } 146588455ec4SChristoph Hellwig 146688455ec4SChristoph Hellwig return 0; 146788455ec4SChristoph Hellwig } 146888455ec4SChristoph Hellwig EXPORT_SYMBOL(spc_parse_cdb); 1469