1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 4 * Copyright (C) 2004 - 2005 Leonid Stoljar 5 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 6 * Copyright (C) 2007 - 2010 ID7 Ltd. 7 * 8 * Forward port and refactoring to modern qla2xxx and target/configfs 9 * 10 * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org> 11 * 12 * Additional file for the target driver support. 13 */ 14/* 15 * This is the global def file that is useful for including from the 16 * target portion. 17 */ 18 19#ifndef __QLA_TARGET_H 20#define __QLA_TARGET_H 21 22#include "qla_def.h" 23#include "qla_dsd.h" 24 25/* 26 * Must be changed on any change in any initiator visible interfaces or 27 * data in the target add-on 28 */ 29#define QLA2XXX_TARGET_MAGIC 269 30 31/* 32 * Must be changed on any change in any target visible interfaces or 33 * data in the initiator 34 */ 35#define QLA2XXX_INITIATOR_MAGIC 57222 36 37#define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive" 38#define QLA2XXX_INI_MODE_STR_DISABLED "disabled" 39#define QLA2XXX_INI_MODE_STR_ENABLED "enabled" 40#define QLA2XXX_INI_MODE_STR_DUAL "dual" 41 42#define QLA2XXX_INI_MODE_EXCLUSIVE 0 43#define QLA2XXX_INI_MODE_DISABLED 1 44#define QLA2XXX_INI_MODE_ENABLED 2 45#define QLA2XXX_INI_MODE_DUAL 3 46 47#define QLA2XXX_COMMAND_COUNT_INIT 250 48#define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250 49 50/* 51 * Used to mark which completion handles (for RIO Status's) are for CTIO's 52 * vs. regular (non-target) info. This is checked for in 53 * qla2x00_process_response_queue() to see if a handle coming back in a 54 * multi-complete should come to the tgt driver or be handled there by qla2xxx 55 */ 56#define CTIO_COMPLETION_HANDLE_MARK BIT_29 57#if (CTIO_COMPLETION_HANDLE_MARK <= DEFAULT_OUTSTANDING_COMMANDS) 58#error "CTIO_COMPLETION_HANDLE_MARK not larger than " 59 "DEFAULT_OUTSTANDING_COMMANDS" 60#endif 61#define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK) 62 63/* Used to mark CTIO as intermediate */ 64#define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30 65#define QLA_TGT_NULL_HANDLE 0 66 67#define QLA_TGT_HANDLE_MASK 0xF0000000 68#define QLA_QPID_HANDLE_MASK 0x00FF0000 /* qpair id mask */ 69#define QLA_CMD_HANDLE_MASK 0x0000FFFF 70#define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~QLA_TGT_HANDLE_MASK) 71 72#define QLA_QPID_HANDLE_SHIFT 16 73#define GET_QID(_h) ((_h & QLA_QPID_HANDLE_MASK) >> QLA_QPID_HANDLE_SHIFT) 74 75 76#ifndef OF_SS_MODE_0 77/* 78 * ISP target entries - Flags bit definitions. 79 */ 80#define OF_SS_MODE_0 0 81#define OF_SS_MODE_1 1 82#define OF_SS_MODE_2 2 83#define OF_SS_MODE_3 3 84 85#define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */ 86#define OF_DATA_IN BIT_6 /* Data in to initiator */ 87 /* (data from target to initiator) */ 88#define OF_DATA_OUT BIT_7 /* Data out from initiator */ 89 /* (data from initiator to target) */ 90#define OF_NO_DATA (BIT_7 | BIT_6) 91#define OF_INC_RC BIT_8 /* Increment command resource count */ 92#define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */ 93#define OF_CONF_REQ BIT_13 /* Confirmation Requested */ 94#define OF_TERM_EXCH BIT_14 /* Terminate exchange */ 95#define OF_SSTS BIT_15 /* Send SCSI status */ 96#endif 97 98#ifndef QLA_TGT_DATASEGS_PER_CMD32 99#define QLA_TGT_DATASEGS_PER_CMD32 3 100#define QLA_TGT_DATASEGS_PER_CONT32 7 101#define QLA_TGT_MAX_SG32(ql) \ 102 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \ 103 QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0) 104 105#define QLA_TGT_DATASEGS_PER_CMD64 2 106#define QLA_TGT_DATASEGS_PER_CONT64 5 107#define QLA_TGT_MAX_SG64(ql) \ 108 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \ 109 QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0) 110#endif 111 112#ifndef QLA_TGT_DATASEGS_PER_CMD_24XX 113#define QLA_TGT_DATASEGS_PER_CMD_24XX 1 114#define QLA_TGT_DATASEGS_PER_CONT_24XX 5 115#define QLA_TGT_MAX_SG_24XX(ql) \ 116 (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \ 117 QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0)) 118#endif 119 120#define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \ 121 ? le16_to_cpu((iocb)->u.isp2x.target.extended) \ 122 : (uint16_t)(iocb)->u.isp2x.target.id.standard) 123 124#ifndef NOTIFY_ACK_TYPE 125#define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */ 126/* 127 * ISP queue - notify acknowledge entry structure definition. 128 * This is sent to the ISP from the target driver. 129 */ 130struct nack_to_isp { 131 uint8_t entry_type; /* Entry type. */ 132 uint8_t entry_count; /* Entry count. */ 133 uint8_t sys_define; /* System defined. */ 134 uint8_t entry_status; /* Entry Status. */ 135 union { 136 struct { 137 __le32 sys_define_2; /* System defined. */ 138 target_id_t target; 139 uint8_t target_id; 140 uint8_t reserved_1; 141 __le16 flags; 142 __le16 resp_code; 143 __le16 status; 144 __le16 task_flags; 145 __le16 seq_id; 146 __le16 srr_rx_id; 147 __le32 srr_rel_offs; 148 __le16 srr_ui; 149 __le16 srr_flags; 150 __le16 srr_reject_code; 151 uint8_t srr_reject_vendor_uniq; 152 uint8_t srr_reject_code_expl; 153 uint8_t reserved_2[24]; 154 } isp2x; 155 struct { 156 uint32_t handle; 157 __le16 nport_handle; 158 uint16_t reserved_1; 159 __le16 flags; 160 __le16 srr_rx_id; 161 __le16 status; 162 uint8_t status_subcode; 163 uint8_t fw_handle; 164 __le32 exchange_address; 165 __le32 srr_rel_offs; 166 __le16 srr_ui; 167 __le16 srr_flags; 168 uint8_t reserved_4[19]; 169 uint8_t vp_index; 170 uint8_t srr_reject_vendor_uniq; 171 uint8_t srr_reject_code_expl; 172 uint8_t srr_reject_code; 173 uint8_t reserved_5[5]; 174 } isp24; 175 } u; 176 uint8_t reserved[2]; 177 __le16 ox_id; 178} __packed; 179#define NOTIFY_ACK_FLAGS_TERMINATE BIT_3 180#define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0 181#define NOTIFY_ACK_SRR_FLAGS_REJECT 1 182 183#define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9 184 185#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0 186#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a 187 188#define NOTIFY_ACK_SUCCESS 0x01 189#endif 190 191#ifndef ACCEPT_TGT_IO_TYPE 192#define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */ 193#endif 194 195#ifndef CONTINUE_TGT_IO_TYPE 196#define CONTINUE_TGT_IO_TYPE 0x17 197/* 198 * ISP queue - Continue Target I/O (CTIO) entry for status mode 0 structure. 199 * This structure is sent to the ISP 2xxx from target driver. 200 */ 201struct ctio_to_2xxx { 202 uint8_t entry_type; /* Entry type. */ 203 uint8_t entry_count; /* Entry count. */ 204 uint8_t sys_define; /* System defined. */ 205 uint8_t entry_status; /* Entry Status. */ 206 uint32_t handle; /* System defined handle */ 207 target_id_t target; 208 __le16 rx_id; 209 __le16 flags; 210 __le16 status; 211 __le16 timeout; /* 0 = 30 seconds, 0xFFFF = disable */ 212 __le16 dseg_count; /* Data segment count. */ 213 __le32 relative_offset; 214 __le32 residual; 215 __le16 reserved_1[3]; 216 __le16 scsi_status; 217 __le32 transfer_length; 218 struct dsd32 dsd[3]; 219} __packed; 220#define ATIO_PATH_INVALID 0x07 221#define ATIO_CANT_PROV_CAP 0x16 222#define ATIO_CDB_VALID 0x3D 223 224#define ATIO_EXEC_READ BIT_1 225#define ATIO_EXEC_WRITE BIT_0 226#endif 227 228#ifndef CTIO_A64_TYPE 229#define CTIO_A64_TYPE 0x1F 230#define CTIO_SUCCESS 0x01 231#define CTIO_ABORTED 0x02 232#define CTIO_INVALID_RX_ID 0x08 233#define CTIO_TIMEOUT 0x0B 234#define CTIO_DIF_ERROR 0x0C /* DIF error detected */ 235#define CTIO_LIP_RESET 0x0E 236#define CTIO_TARGET_RESET 0x17 237#define CTIO_PORT_UNAVAILABLE 0x28 238#define CTIO_PORT_LOGGED_OUT 0x29 239#define CTIO_PORT_CONF_CHANGED 0x2A 240#define CTIO_SRR_RECEIVED 0x45 241#endif 242 243#ifndef CTIO_RET_TYPE 244#define CTIO_RET_TYPE 0x17 /* CTIO return entry */ 245#define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */ 246#endif 247 248struct fcp_hdr { 249 uint8_t r_ctl; 250 be_id_t d_id; 251 uint8_t cs_ctl; 252 be_id_t s_id; 253 uint8_t type; 254 uint8_t f_ctl[3]; 255 uint8_t seq_id; 256 uint8_t df_ctl; 257 uint16_t seq_cnt; 258 __be16 ox_id; 259 uint16_t rx_id; 260 __le32 parameter; 261}; 262 263struct fcp_hdr_le { 264 le_id_t d_id; 265 uint8_t r_ctl; 266 le_id_t s_id; 267 uint8_t cs_ctl; 268 uint8_t f_ctl[3]; 269 uint8_t type; 270 __le16 seq_cnt; 271 uint8_t df_ctl; 272 uint8_t seq_id; 273 __le16 rx_id; 274 __le16 ox_id; 275 __le32 parameter; 276}; 277 278#define F_CTL_EXCH_CONTEXT_RESP BIT_23 279#define F_CTL_SEQ_CONTEXT_RESIP BIT_22 280#define F_CTL_LAST_SEQ BIT_20 281#define F_CTL_END_SEQ BIT_19 282#define F_CTL_SEQ_INITIATIVE BIT_16 283 284#define R_CTL_BASIC_LINK_SERV 0x80 285#define R_CTL_B_ACC 0x4 286#define R_CTL_B_RJT 0x5 287 288struct atio7_fcp_cmnd { 289 uint64_t lun; 290 uint8_t cmnd_ref; 291 uint8_t task_attr:3; 292 uint8_t reserved:5; 293 uint8_t task_mgmt_flags; 294#define FCP_CMND_TASK_MGMT_CLEAR_ACA 6 295#define FCP_CMND_TASK_MGMT_TARGET_RESET 5 296#define FCP_CMND_TASK_MGMT_LU_RESET 4 297#define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2 298#define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1 299 uint8_t wrdata:1; 300 uint8_t rddata:1; 301 uint8_t add_cdb_len:6; 302 uint8_t cdb[16]; 303 /* 304 * add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4 305 * only to make sizeof(struct atio7_fcp_cmnd) be as expected by 306 * BUILD_BUG_ON in qlt_init(). 307 */ 308 uint8_t add_cdb[4]; 309 /* __le32 data_length; */ 310} __packed; 311 312/* 313 * ISP queue - Accept Target I/O (ATIO) type entry IOCB structure. 314 * This is sent from the ISP to the target driver. 315 */ 316struct atio_from_isp { 317 union { 318 struct { 319 __le16 entry_hdr; 320 uint8_t sys_define; /* System defined. */ 321 uint8_t entry_status; /* Entry Status. */ 322 __le32 sys_define_2; /* System defined. */ 323 target_id_t target; 324 __le16 rx_id; 325 __le16 flags; 326 __le16 status; 327 uint8_t command_ref; 328 uint8_t task_codes; 329 uint8_t task_flags; 330 uint8_t execution_codes; 331 uint8_t cdb[MAX_CMDSZ]; 332 __le32 data_length; 333 __le16 lun; 334 uint8_t initiator_port_name[WWN_SIZE]; /* on qla23xx */ 335 __le16 reserved_32[6]; 336 __le16 ox_id; 337 } isp2x; 338 struct { 339 __le16 entry_hdr; 340 uint8_t fcp_cmnd_len_low; 341 uint8_t fcp_cmnd_len_high:4; 342 uint8_t attr:4; 343 __le32 exchange_addr; 344#define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF 345 struct fcp_hdr fcp_hdr; 346 struct atio7_fcp_cmnd fcp_cmnd; 347 } isp24; 348 struct { 349 uint8_t entry_type; /* Entry type. */ 350 uint8_t entry_count; /* Entry count. */ 351 __le16 attr_n_length; 352#define FCP_CMD_LENGTH_MASK 0x0fff 353#define FCP_CMD_LENGTH_MIN 0x38 354 uint8_t data[56]; 355 __le32 signature; 356#define ATIO_PROCESSED 0xDEADDEAD /* Signature */ 357 } raw; 358 } u; 359} __packed; 360 361static inline int fcpcmd_is_corrupted(struct atio *atio) 362{ 363 if (atio->entry_type == ATIO_TYPE7 && 364 ((le16_to_cpu(atio->attr_n_length) & FCP_CMD_LENGTH_MASK) < 365 FCP_CMD_LENGTH_MIN)) 366 return 1; 367 else 368 return 0; 369} 370 371/* adjust corrupted atio so we won't trip over the same entry again. */ 372static inline void adjust_corrupted_atio(struct atio_from_isp *atio) 373{ 374 atio->u.raw.attr_n_length = cpu_to_le16(FCP_CMD_LENGTH_MIN); 375 atio->u.isp24.fcp_cmnd.add_cdb_len = 0; 376} 377 378static inline int get_datalen_for_atio(struct atio_from_isp *atio) 379{ 380 int len = atio->u.isp24.fcp_cmnd.add_cdb_len; 381 382 return get_unaligned_be32(&atio->u.isp24.fcp_cmnd.add_cdb[len * 4]); 383} 384 385#define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */ 386 387/* 388 * ISP queue - Continue Target I/O (ATIO) type 7 entry (for 24xx) structure. 389 * This structure is sent to the ISP 24xx from the target driver. 390 */ 391 392struct ctio7_to_24xx { 393 uint8_t entry_type; /* Entry type. */ 394 uint8_t entry_count; /* Entry count. */ 395 uint8_t sys_define; /* System defined. */ 396 uint8_t entry_status; /* Entry Status. */ 397 uint32_t handle; /* System defined handle */ 398 __le16 nport_handle; 399#define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF 400 __le16 timeout; 401 __le16 dseg_count; /* Data segment count. */ 402 uint8_t vp_index; 403 uint8_t add_flags; 404 le_id_t initiator_id; 405 uint8_t reserved; 406 __le32 exchange_addr; 407 union { 408 struct { 409 __le16 reserved1; 410 __le16 flags; 411 __le32 residual; 412 __le16 ox_id; 413 __le16 scsi_status; 414 __le32 relative_offset; 415 __le32 reserved2; 416 __le32 transfer_length; 417 __le32 reserved3; 418 struct dsd64 dsd; 419 } status0; 420 struct { 421 __le16 sense_length; 422 __le16 flags; 423 __le32 residual; 424 __le16 ox_id; 425 __le16 scsi_status; 426 __le16 response_len; 427 __le16 reserved; 428 uint8_t sense_data[24]; 429 } status1; 430 } u; 431} __packed; 432 433/* 434 * ISP queue - CTIO type 7 from ISP 24xx to target driver 435 * returned entry structure. 436 */ 437struct ctio7_from_24xx { 438 uint8_t entry_type; /* Entry type. */ 439 uint8_t entry_count; /* Entry count. */ 440 uint8_t sys_define; /* System defined. */ 441 uint8_t entry_status; /* Entry Status. */ 442 uint32_t handle; /* System defined handle */ 443 __le16 status; 444 __le16 timeout; 445 __le16 dseg_count; /* Data segment count. */ 446 uint8_t vp_index; 447 uint8_t reserved1[5]; 448 __le32 exchange_address; 449 __le16 reserved2; 450 __le16 flags; 451 __le32 residual; 452 __le16 ox_id; 453 __le16 reserved3; 454 __le32 relative_offset; 455 uint8_t reserved4[24]; 456} __packed; 457 458/* CTIO7 flags values */ 459#define CTIO7_FLAGS_SEND_STATUS BIT_15 460#define CTIO7_FLAGS_TERMINATE BIT_14 461#define CTIO7_FLAGS_CONFORM_REQ BIT_13 462#define CTIO7_FLAGS_DONT_RET_CTIO BIT_8 463#define CTIO7_FLAGS_STATUS_MODE_0 0 464#define CTIO7_FLAGS_STATUS_MODE_1 BIT_6 465#define CTIO7_FLAGS_STATUS_MODE_2 BIT_7 466#define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5 467#define CTIO7_FLAGS_CONFIRM_SATISF BIT_4 468#define CTIO7_FLAGS_DSD_PTR BIT_2 469#define CTIO7_FLAGS_DATA_IN BIT_1 /* data to initiator */ 470#define CTIO7_FLAGS_DATA_OUT BIT_0 /* data from initiator */ 471 472#define ELS_PLOGI 0x3 473#define ELS_FLOGI 0x4 474#define ELS_LOGO 0x5 475#define ELS_PRLI 0x20 476#define ELS_PRLO 0x21 477#define ELS_TPRLO 0x24 478#define ELS_PDISC 0x50 479#define ELS_ADISC 0x52 480 481/* 482 *CTIO Type CRC_2 IOCB 483 */ 484struct ctio_crc2_to_fw { 485 uint8_t entry_type; /* Entry type. */ 486#define CTIO_CRC2 0x7A 487 uint8_t entry_count; /* Entry count. */ 488 uint8_t sys_define; /* System defined. */ 489 uint8_t entry_status; /* Entry Status. */ 490 491 uint32_t handle; /* System handle. */ 492 __le16 nport_handle; /* N_PORT handle. */ 493 __le16 timeout; /* Command timeout. */ 494 495 __le16 dseg_count; /* Data segment count. */ 496 uint8_t vp_index; 497 uint8_t add_flags; /* additional flags */ 498#define CTIO_CRC2_AF_DIF_DSD_ENA BIT_3 499 500 le_id_t initiator_id; /* initiator ID */ 501 uint8_t reserved1; 502 __le32 exchange_addr; /* rcv exchange address */ 503 __le16 reserved2; 504 __le16 flags; /* refer to CTIO7 flags values */ 505 __le32 residual; 506 __le16 ox_id; 507 __le16 scsi_status; 508 __le32 relative_offset; 509 __le32 reserved5; 510 __le32 transfer_length; /* total fc transfer length */ 511 __le32 reserved6; 512 __le64 crc_context_address __packed; /* Data segment address. */ 513 __le16 crc_context_len; /* Data segment length. */ 514 __le16 reserved_1; /* MUST be set to 0. */ 515}; 516 517/* CTIO Type CRC_x Status IOCB */ 518struct ctio_crc_from_fw { 519 uint8_t entry_type; /* Entry type. */ 520 uint8_t entry_count; /* Entry count. */ 521 uint8_t sys_define; /* System defined. */ 522 uint8_t entry_status; /* Entry Status. */ 523 524 uint32_t handle; /* System handle. */ 525 __le16 status; 526 __le16 timeout; /* Command timeout. */ 527 __le16 dseg_count; /* Data segment count. */ 528 __le32 reserved1; 529 __le16 state_flags; 530#define CTIO_CRC_SF_DIF_CHOPPED BIT_4 531 532 __le32 exchange_address; /* rcv exchange address */ 533 __le16 reserved2; 534 __le16 flags; 535 __le32 resid_xfer_length; 536 __le16 ox_id; 537 uint8_t reserved3[12]; 538 __le16 runt_guard; /* reported runt blk guard */ 539 uint8_t actual_dif[8]; 540 uint8_t expected_dif[8]; 541} __packed; 542 543/* 544 * ISP queue - ABTS received/response entries structure definition for 24xx. 545 */ 546#define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */ 547#define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */ 548 549/* 550 * ISP queue - ABTS received IOCB entry structure definition for 24xx. 551 * The ABTS BLS received from the wire is sent to the 552 * target driver by the ISP 24xx. 553 * The IOCB is placed on the response queue. 554 */ 555struct abts_recv_from_24xx { 556 uint8_t entry_type; /* Entry type. */ 557 uint8_t entry_count; /* Entry count. */ 558 uint8_t sys_define; /* System defined. */ 559 uint8_t entry_status; /* Entry Status. */ 560 uint8_t reserved_1[6]; 561 __le16 nport_handle; 562 uint8_t reserved_2[2]; 563 uint8_t vp_index; 564 uint8_t reserved_3:4; 565 uint8_t sof_type:4; 566 __le32 exchange_address; 567 struct fcp_hdr_le fcp_hdr_le; 568 uint8_t reserved_4[16]; 569 __le32 exchange_addr_to_abort; 570} __packed; 571 572#define ABTS_PARAM_ABORT_SEQ BIT_0 573 574struct ba_acc_le { 575 __le16 reserved; 576 uint8_t seq_id_last; 577 uint8_t seq_id_valid; 578#define SEQ_ID_VALID 0x80 579#define SEQ_ID_INVALID 0x00 580 __le16 rx_id; 581 __le16 ox_id; 582 __le16 high_seq_cnt; 583 __le16 low_seq_cnt; 584} __packed; 585 586struct ba_rjt_le { 587 uint8_t vendor_uniq; 588 uint8_t reason_expl; 589 uint8_t reason_code; 590#define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1 591#define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9 592 uint8_t reserved; 593} __packed; 594 595/* 596 * ISP queue - ABTS Response IOCB entry structure definition for 24xx. 597 * The ABTS response to the ABTS received is sent by the 598 * target driver to the ISP 24xx. 599 * The IOCB is placed on the request queue. 600 */ 601struct abts_resp_to_24xx { 602 uint8_t entry_type; /* Entry type. */ 603 uint8_t entry_count; /* Entry count. */ 604 uint8_t sys_define; /* System defined. */ 605 uint8_t entry_status; /* Entry Status. */ 606 uint32_t handle; 607 __le16 reserved_1; 608 __le16 nport_handle; 609 __le16 control_flags; 610#define ABTS_CONTR_FLG_TERM_EXCHG BIT_0 611 uint8_t vp_index; 612 uint8_t reserved_3:4; 613 uint8_t sof_type:4; 614 __le32 exchange_address; 615 struct fcp_hdr_le fcp_hdr_le; 616 union { 617 struct ba_acc_le ba_acct; 618 struct ba_rjt_le ba_rjt; 619 } __packed payload; 620 __le32 reserved_4; 621 __le32 exchange_addr_to_abort; 622} __packed; 623 624/* 625 * ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure. 626 * The ABTS response with completion status to the ABTS response 627 * (sent by the target driver to the ISP 24xx) is sent by the 628 * ISP24xx firmware to the target driver. 629 * The IOCB is placed on the response queue. 630 */ 631struct abts_resp_from_24xx_fw { 632 uint8_t entry_type; /* Entry type. */ 633 uint8_t entry_count; /* Entry count. */ 634 uint8_t sys_define; /* System defined. */ 635 uint8_t entry_status; /* Entry Status. */ 636 uint32_t handle; 637 __le16 compl_status; 638#define ABTS_RESP_COMPL_SUCCESS 0 639#define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31 640 __le16 nport_handle; 641 __le16 reserved_1; 642 uint8_t reserved_2; 643 uint8_t reserved_3:4; 644 uint8_t sof_type:4; 645 __le32 exchange_address; 646 struct fcp_hdr_le fcp_hdr_le; 647 uint8_t reserved_4[8]; 648 __le32 error_subcode1; 649#define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E 650 __le32 error_subcode2; 651 __le32 exchange_addr_to_abort; 652} __packed; 653 654/********************************************************************\ 655 * Type Definitions used by initiator & target halves 656\********************************************************************/ 657 658struct qla_tgt_mgmt_cmd; 659struct fc_port; 660struct qla_tgt_cmd; 661 662/* 663 * This structure provides a template of function calls that the 664 * target driver (from within qla_target.c) can issue to the 665 * target module (tcm_qla2xxx). 666 */ 667struct qla_tgt_func_tmpl { 668 struct qla_tgt_cmd *(*find_cmd_by_tag)(struct fc_port *, uint64_t); 669 int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *, 670 unsigned char *, uint32_t, int, int, int); 671 void (*handle_data)(struct qla_tgt_cmd *); 672 int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, u64, uint16_t, 673 uint32_t); 674 struct qla_tgt_cmd *(*get_cmd)(struct fc_port *); 675 void (*rel_cmd)(struct qla_tgt_cmd *); 676 void (*free_cmd)(struct qla_tgt_cmd *); 677 void (*free_mcmd)(struct qla_tgt_mgmt_cmd *); 678 void (*free_session)(struct fc_port *); 679 680 int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *, 681 struct fc_port *); 682 void (*update_sess)(struct fc_port *, port_id_t, uint16_t, bool); 683 struct fc_port *(*find_sess_by_loop_id)(struct scsi_qla_host *, 684 const uint16_t); 685 struct fc_port *(*find_sess_by_s_id)(struct scsi_qla_host *, 686 const be_id_t); 687 void (*clear_nacl_from_fcport_map)(struct fc_port *); 688 void (*put_sess)(struct fc_port *); 689 void (*shutdown_sess)(struct fc_port *); 690 int (*get_dif_tags)(struct qla_tgt_cmd *cmd, uint16_t *pfw_prot_opts); 691 int (*chk_dif_tags)(uint32_t tag); 692 void (*add_target)(struct scsi_qla_host *); 693 void (*remove_target)(struct scsi_qla_host *); 694}; 695 696int qla2x00_wait_for_hba_online(struct scsi_qla_host *); 697 698#include <target/target_core_base.h> 699 700#define QLA_TGT_TIMEOUT 10 /* in seconds */ 701 702#define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */ 703 704/* Immediate notify status constants */ 705#define IMM_NTFY_LIP_RESET 0x000E 706#define IMM_NTFY_LIP_LINK_REINIT 0x000F 707#define IMM_NTFY_IOCB_OVERFLOW 0x0016 708#define IMM_NTFY_ABORT_TASK 0x0020 709#define IMM_NTFY_PORT_LOGOUT 0x0029 710#define IMM_NTFY_PORT_CONFIG 0x002A 711#define IMM_NTFY_GLBL_TPRLO 0x002D 712#define IMM_NTFY_GLBL_LOGO 0x002E 713#define IMM_NTFY_RESOURCE 0x0034 714#define IMM_NTFY_MSG_RX 0x0036 715#define IMM_NTFY_SRR 0x0045 716#define IMM_NTFY_ELS 0x0046 717 718/* Immediate notify task flags */ 719#define IMM_NTFY_TASK_MGMT_SHIFT 8 720 721#define QLA_TGT_CLEAR_ACA 0x40 722#define QLA_TGT_TARGET_RESET 0x20 723#define QLA_TGT_LUN_RESET 0x10 724#define QLA_TGT_CLEAR_TS 0x04 725#define QLA_TGT_ABORT_TS 0x02 726#define QLA_TGT_ABORT_ALL_SESS 0xFFFF 727#define QLA_TGT_ABORT_ALL 0xFFFE 728#define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD 729#define QLA_TGT_NEXUS_LOSS 0xFFFC 730#define QLA_TGT_ABTS 0xFFFB 731#define QLA_TGT_2G_ABORT_TASK 0xFFFA 732 733/* Notify Acknowledge flags */ 734#define NOTIFY_ACK_RES_COUNT BIT_8 735#define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5 736#define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4 737 738/* Command's states */ 739#define QLA_TGT_STATE_NEW 0 /* New command + target processing */ 740#define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */ 741#define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */ 742#define QLA_TGT_STATE_PROCESSED 3 /* target done processing */ 743 744/* ATIO task_codes field */ 745#define ATIO_SIMPLE_QUEUE 0 746#define ATIO_HEAD_OF_QUEUE 1 747#define ATIO_ORDERED_QUEUE 2 748#define ATIO_ACA_QUEUE 4 749#define ATIO_UNTAGGED 5 750 751/* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */ 752#define FC_TM_SUCCESS 0 753#define FC_TM_BAD_FCP_DATA 1 754#define FC_TM_BAD_CMD 2 755#define FC_TM_FCP_DATA_MISMATCH 3 756#define FC_TM_REJECT 4 757#define FC_TM_FAILED 5 758 759#define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \ 760 (((const uint8_t *)(sense))[0] & 0x70) == 0x70) 761 762struct qla_port_24xx_data { 763 uint8_t port_name[WWN_SIZE]; 764 uint16_t loop_id; 765 uint16_t reserved; 766}; 767 768struct qla_qpair_hint { 769 struct list_head hint_elem; 770 struct qla_qpair *qpair; 771 u16 cpuid; 772 uint8_t cmd_cnt; 773}; 774 775struct qla_tgt { 776 struct scsi_qla_host *vha; 777 struct qla_hw_data *ha; 778 struct btree_head64 lun_qpair_map; 779 struct qla_qpair_hint *qphints; 780 /* 781 * To sync between IRQ handlers and qlt_target_release(). Needed, 782 * because req_pkt() can drop/reaquire HW lock inside. Protected by 783 * HW lock. 784 */ 785 int atio_irq_cmd_count; 786 787 int sg_tablesize; 788 789 /* Target's flags, serialized by pha->hardware_lock */ 790 unsigned int link_reinit_iocb_pending:1; 791 792 /* 793 * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex 794 * OR hardware_lock for reading. 795 */ 796 int tgt_stop; /* the target mode driver is being stopped */ 797 int tgt_stopped; /* the target mode driver has been stopped */ 798 799 /* Count of sessions refering qla_tgt. Protected by hardware_lock. */ 800 int sess_count; 801 802 /* Protected by hardware_lock */ 803 struct list_head del_sess_list; 804 805 spinlock_t sess_work_lock; 806 struct list_head sess_works_list; 807 struct work_struct sess_work; 808 809 struct imm_ntfy_from_isp link_reinit_iocb; 810 wait_queue_head_t waitQ; 811 int notify_ack_expected; 812 int abts_resp_expected; 813 int modify_lun_expected; 814 atomic_t tgt_global_resets_count; 815 struct list_head tgt_list_entry; 816}; 817 818struct qla_tgt_sess_op { 819 struct scsi_qla_host *vha; 820 uint32_t chip_reset; 821 struct atio_from_isp atio; 822 struct work_struct work; 823 struct list_head cmd_list; 824 bool aborted; 825 struct rsp_que *rsp; 826}; 827 828enum trace_flags { 829 TRC_NEW_CMD = BIT_0, 830 TRC_DO_WORK = BIT_1, 831 TRC_DO_WORK_ERR = BIT_2, 832 TRC_XFR_RDY = BIT_3, 833 TRC_XMIT_DATA = BIT_4, 834 TRC_XMIT_STATUS = BIT_5, 835 TRC_SRR_RSP = BIT_6, 836 TRC_SRR_XRDY = BIT_7, 837 TRC_SRR_TERM = BIT_8, 838 TRC_SRR_CTIO = BIT_9, 839 TRC_FLUSH = BIT_10, 840 TRC_CTIO_ERR = BIT_11, 841 TRC_CTIO_DONE = BIT_12, 842 TRC_CTIO_ABORTED = BIT_13, 843 TRC_CTIO_STRANGE = BIT_14, 844 TRC_CMD_DONE = BIT_15, 845 TRC_CMD_CHK_STOP = BIT_16, 846 TRC_CMD_FREE = BIT_17, 847 TRC_DATA_IN = BIT_18, 848 TRC_ABORT = BIT_19, 849 TRC_DIF_ERR = BIT_20, 850}; 851 852struct qla_tgt_cmd { 853 /* 854 * Do not move cmd_type field. it needs to line up with srb->cmd_type 855 */ 856 uint8_t cmd_type; 857 uint8_t pad[7]; 858 struct se_cmd se_cmd; 859 struct fc_port *sess; 860 struct qla_qpair *qpair; 861 uint32_t reset_count; 862 int state; 863 struct work_struct work; 864 /* Sense buffer that will be mapped into outgoing status */ 865 unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; 866 867 spinlock_t cmd_lock; 868 /* to save extra sess dereferences */ 869 unsigned int conf_compl_supported:1; 870 unsigned int sg_mapped:1; 871 unsigned int free_sg:1; 872 unsigned int write_data_transferred:1; 873 unsigned int q_full:1; 874 unsigned int term_exchg:1; 875 unsigned int cmd_sent_to_fw:1; 876 unsigned int cmd_in_wq:1; 877 878 /* 879 * This variable may be set from outside the LIO and I/O completion 880 * callback functions. Do not declare this member variable as a 881 * bitfield to avoid a read-modify-write operation when this variable 882 * is set. 883 */ 884 unsigned int aborted; 885 886 struct scatterlist *sg; /* cmd data buffer SG vector */ 887 int sg_cnt; /* SG segments count */ 888 int bufflen; /* cmd buffer length */ 889 int offset; 890 u64 unpacked_lun; 891 enum dma_data_direction dma_data_direction; 892 893 uint16_t ctio_flags; 894 uint16_t vp_idx; 895 uint16_t loop_id; /* to save extra sess dereferences */ 896 struct qla_tgt *tgt; /* to save extra sess dereferences */ 897 struct scsi_qla_host *vha; 898 struct list_head cmd_list; 899 900 struct atio_from_isp atio; 901 902 uint8_t ctx_dsd_alloced; 903 904 /* T10-DIF */ 905#define DIF_ERR_NONE 0 906#define DIF_ERR_GRD 1 907#define DIF_ERR_REF 2 908#define DIF_ERR_APP 3 909 int8_t dif_err_code; 910 struct scatterlist *prot_sg; 911 uint32_t prot_sg_cnt; 912 uint32_t blk_sz, num_blks; 913 uint8_t scsi_status, sense_key, asc, ascq; 914 915 struct crc_context *ctx; 916 const uint8_t *cdb; 917 uint64_t lba; 918 uint16_t a_guard, e_guard, a_app_tag, e_app_tag; 919 uint32_t a_ref_tag, e_ref_tag; 920#define DIF_BUNDL_DMA_VALID 1 921 uint16_t prot_flags; 922 923 uint64_t jiffies_at_alloc; 924 uint64_t jiffies_at_free; 925 926 enum trace_flags trc_flags; 927}; 928 929struct qla_tgt_sess_work_param { 930 struct list_head sess_works_list_entry; 931 932#define QLA_TGT_SESS_WORK_ABORT 1 933#define QLA_TGT_SESS_WORK_TM 2 934 int type; 935 936 union { 937 struct abts_recv_from_24xx abts; 938 struct imm_ntfy_from_isp tm_iocb; 939 struct atio_from_isp tm_iocb2; 940 }; 941}; 942 943struct qla_tgt_mgmt_cmd { 944 uint8_t cmd_type; 945 uint8_t pad[3]; 946 uint16_t tmr_func; 947 uint8_t fc_tm_rsp; 948 uint8_t abort_io_attr; 949 struct fc_port *sess; 950 struct qla_qpair *qpair; 951 struct scsi_qla_host *vha; 952 struct se_cmd se_cmd; 953 struct work_struct free_work; 954 unsigned int flags; 955#define QLA24XX_MGMT_SEND_NACK BIT_0 956#define QLA24XX_MGMT_ABORT_IO_ATTR_VALID BIT_1 957 uint32_t reset_count; 958 struct work_struct work; 959 uint64_t unpacked_lun; 960 union { 961 struct atio_from_isp atio; 962 struct imm_ntfy_from_isp imm_ntfy; 963 struct abts_recv_from_24xx abts; 964 } __packed orig_iocb; 965}; 966 967struct qla_tgt_prm { 968 struct qla_tgt_cmd *cmd; 969 struct qla_tgt *tgt; 970 void *pkt; 971 struct scatterlist *sg; /* cmd data buffer SG vector */ 972 unsigned char *sense_buffer; 973 int seg_cnt; 974 int req_cnt; 975 uint16_t rq_result; 976 int sense_buffer_len; 977 int residual; 978 int add_status_pkt; 979 /* dif */ 980 struct scatterlist *prot_sg; 981 uint16_t prot_seg_cnt; 982 uint16_t tot_dsds; 983}; 984 985/* Check for Switch reserved address */ 986#define IS_SW_RESV_ADDR(_s_id) \ 987 ((_s_id.b.domain == 0xff) && ((_s_id.b.area & 0xf0) == 0xf0)) 988 989#define QLA_TGT_XMIT_DATA 1 990#define QLA_TGT_XMIT_STATUS 2 991#define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA) 992 993 994extern struct qla_tgt_data qla_target; 995 996/* 997 * Function prototypes for qla_target.c logic used by qla2xxx LLD code. 998 */ 999extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *); 1000extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *); 1001extern int qlt_lport_register(void *, u64, u64, u64, 1002 int (*callback)(struct scsi_qla_host *, void *, u64, u64)); 1003extern void qlt_lport_deregister(struct scsi_qla_host *); 1004extern void qlt_unreg_sess(struct fc_port *); 1005extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *); 1006extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *, int); 1007extern int __init qlt_init(void); 1008extern void qlt_exit(void); 1009extern void qlt_update_vp_map(struct scsi_qla_host *, int); 1010extern void qlt_free_session_done(struct work_struct *); 1011/* 1012 * This macro is used during early initializations when host->active_mode 1013 * is not set. Right now, ha value is ignored. 1014 */ 1015#define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED) 1016 1017extern int ql2x_ini_mode; 1018 1019static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha) 1020{ 1021 return ha->host->active_mode == MODE_TARGET; 1022} 1023 1024static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha) 1025{ 1026 return ha->host->active_mode == MODE_INITIATOR; 1027} 1028 1029static inline bool qla_dual_mode_enabled(struct scsi_qla_host *ha) 1030{ 1031 return (ha->host->active_mode == MODE_DUAL); 1032} 1033 1034static inline uint32_t sid_to_key(const be_id_t s_id) 1035{ 1036 return s_id.domain << 16 | 1037 s_id.area << 8 | 1038 s_id.al_pa; 1039} 1040 1041/* 1042 * Exported symbols from qla_target.c LLD logic used by qla2xxx code.. 1043 */ 1044extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *, 1045 response_t *); 1046extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *); 1047extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t); 1048extern int qlt_abort_cmd(struct qla_tgt_cmd *); 1049extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *); 1050extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *); 1051extern void qlt_free_cmd(struct qla_tgt_cmd *cmd); 1052extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *); 1053extern void qlt_enable_vha(struct scsi_qla_host *); 1054extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *); 1055extern u8 qlt_rff_id(struct scsi_qla_host *); 1056extern void qlt_init_atio_q_entries(struct scsi_qla_host *); 1057extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *, uint8_t); 1058extern void qlt_24xx_config_rings(struct scsi_qla_host *); 1059extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *, 1060 struct nvram_24xx *); 1061extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *, 1062 struct init_cb_24xx *); 1063extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *, 1064 struct init_cb_81xx *); 1065extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *, 1066 struct nvram_81xx *); 1067extern int qlt_24xx_process_response_error(struct scsi_qla_host *, 1068 struct sts_entry_24xx *); 1069extern void qlt_modify_vp_config(struct scsi_qla_host *, 1070 struct vp_config_entry_24xx *); 1071extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *); 1072extern int qlt_mem_alloc(struct qla_hw_data *); 1073extern void qlt_mem_free(struct qla_hw_data *); 1074extern int qlt_stop_phase1(struct qla_tgt *); 1075extern void qlt_stop_phase2(struct qla_tgt *); 1076extern irqreturn_t qla83xx_msix_atio_q(int, void *); 1077extern void qlt_83xx_iospace_config(struct qla_hw_data *); 1078extern int qlt_free_qfull_cmds(struct qla_qpair *); 1079extern void qlt_logo_completion_handler(fc_port_t *, int); 1080extern void qlt_do_generation_tick(struct scsi_qla_host *, int *); 1081 1082void qlt_send_resp_ctio(struct qla_qpair *, struct qla_tgt_cmd *, uint8_t, 1083 uint8_t, uint8_t, uint8_t); 1084 1085#endif /* __QLA_TARGET_H */ 1086