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 #endif 120 121 #define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \ 122 ? le16_to_cpu((iocb)->u.isp2x.target.extended) \ 123 : (uint16_t)(iocb)->u.isp2x.target.id.standard) 124 125 #ifndef NOTIFY_ACK_TYPE 126 #define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */ 127 /* 128 * ISP queue - notify acknowledge entry structure definition. 129 * This is sent to the ISP from the target driver. 130 */ 131 struct nack_to_isp { 132 uint8_t entry_type; /* Entry type. */ 133 uint8_t entry_count; /* Entry count. */ 134 uint8_t sys_define; /* System defined. */ 135 uint8_t entry_status; /* Entry Status. */ 136 union { 137 struct { 138 __le32 sys_define_2; /* System defined. */ 139 target_id_t target; 140 uint8_t target_id; 141 uint8_t reserved_1; 142 __le16 flags; 143 __le16 resp_code; 144 __le16 status; 145 __le16 task_flags; 146 __le16 seq_id; 147 __le16 srr_rx_id; 148 __le32 srr_rel_offs; 149 __le16 srr_ui; 150 __le16 srr_flags; 151 __le16 srr_reject_code; 152 uint8_t srr_reject_vendor_uniq; 153 uint8_t srr_reject_code_expl; 154 uint8_t reserved_2[24]; 155 } isp2x; 156 struct { 157 uint32_t handle; 158 __le16 nport_handle; 159 uint16_t reserved_1; 160 __le16 flags; 161 __le16 srr_rx_id; 162 __le16 status; 163 uint8_t status_subcode; 164 uint8_t fw_handle; 165 __le32 exchange_address; 166 __le32 srr_rel_offs; 167 __le16 srr_ui; 168 __le16 srr_flags; 169 uint8_t reserved_4[19]; 170 uint8_t vp_index; 171 uint8_t srr_reject_vendor_uniq; 172 uint8_t srr_reject_code_expl; 173 uint8_t srr_reject_code; 174 uint8_t reserved_5[5]; 175 } isp24; 176 } u; 177 uint8_t reserved[2]; 178 __le16 ox_id; 179 } __packed; 180 #define NOTIFY_ACK_FLAGS_TERMINATE BIT_3 181 #define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0 182 #define NOTIFY_ACK_SRR_FLAGS_REJECT 1 183 184 #define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9 185 186 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0 187 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a 188 189 #define NOTIFY_ACK_SUCCESS 0x01 190 #endif 191 192 #ifndef ACCEPT_TGT_IO_TYPE 193 #define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */ 194 #endif 195 196 #ifndef CONTINUE_TGT_IO_TYPE 197 #define CONTINUE_TGT_IO_TYPE 0x17 198 /* 199 * ISP queue - Continue Target I/O (CTIO) entry for status mode 0 structure. 200 * This structure is sent to the ISP 2xxx from target driver. 201 */ 202 struct ctio_to_2xxx { 203 uint8_t entry_type; /* Entry type. */ 204 uint8_t entry_count; /* Entry count. */ 205 uint8_t sys_define; /* System defined. */ 206 uint8_t entry_status; /* Entry Status. */ 207 uint32_t handle; /* System defined handle */ 208 target_id_t target; 209 __le16 rx_id; 210 __le16 flags; 211 __le16 status; 212 __le16 timeout; /* 0 = 30 seconds, 0xFFFF = disable */ 213 __le16 dseg_count; /* Data segment count. */ 214 __le32 relative_offset; 215 __le32 residual; 216 __le16 reserved_1[3]; 217 __le16 scsi_status; 218 __le32 transfer_length; 219 struct dsd32 dsd[3]; 220 } __packed; 221 #define ATIO_PATH_INVALID 0x07 222 #define ATIO_CANT_PROV_CAP 0x16 223 #define ATIO_CDB_VALID 0x3D 224 225 #define ATIO_EXEC_READ BIT_1 226 #define ATIO_EXEC_WRITE BIT_0 227 #endif 228 229 #ifndef CTIO_A64_TYPE 230 #define CTIO_A64_TYPE 0x1F 231 #define CTIO_SUCCESS 0x01 232 #define CTIO_ABORTED 0x02 233 #define CTIO_INVALID_RX_ID 0x08 234 #define CTIO_TIMEOUT 0x0B 235 #define CTIO_DIF_ERROR 0x0C /* DIF error detected */ 236 #define CTIO_LIP_RESET 0x0E 237 #define CTIO_TARGET_RESET 0x17 238 #define CTIO_PORT_UNAVAILABLE 0x28 239 #define CTIO_PORT_LOGGED_OUT 0x29 240 #define CTIO_PORT_CONF_CHANGED 0x2A 241 #define CTIO_SRR_RECEIVED 0x45 242 #endif 243 244 #ifndef CTIO_RET_TYPE 245 #define CTIO_RET_TYPE 0x17 /* CTIO return entry */ 246 #define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */ 247 248 struct 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 }; 262 263 struct 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 287 288 struct 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 */ 316 struct 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; 360 361 static 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. */ 372 static 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 } 377 378 static 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 */ 391 392 struct 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 */ 437 struct 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 */ 484 struct 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 */ 518 struct 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 */ 555 struct 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_0 573 574 struct 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; 585 586 struct 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 */ 601 struct 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 */ 631 struct 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 \********************************************************************/ 657 658 struct qla_tgt_mgmt_cmd; 659 struct fc_port; 660 struct 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 */ 667 struct 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 }; 695 696 int 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) 761 762 struct qla_port_24xx_data { 763 uint8_t port_name[WWN_SIZE]; 764 uint16_t loop_id; 765 uint16_t reserved; 766 }; 767 768 struct qla_qpair_hint { 769 struct list_head hint_elem; 770 struct qla_qpair *qpair; 771 u16 cpuid; 772 uint8_t cmd_cnt; 773 }; 774 775 struct 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 }; 817 818 struct 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 }; 827 828 enum 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 }; 851 852 struct 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 list_head sess_cmd_list; 860 struct fc_port *sess; 861 struct qla_qpair *qpair; 862 uint32_t reset_count; 863 int state; 864 struct work_struct work; 865 /* Sense buffer that will be mapped into outgoing status */ 866 unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; 867 868 spinlock_t cmd_lock; 869 /* to save extra sess dereferences */ 870 unsigned int conf_compl_supported:1; 871 unsigned int sg_mapped:1; 872 unsigned int free_sg:1; 873 unsigned int write_data_transferred:1; 874 unsigned int q_full:1; 875 unsigned int term_exchg:1; 876 unsigned int cmd_sent_to_fw:1; 877 unsigned int cmd_in_wq:1; 878 879 /* 880 * This variable may be set from outside the LIO and I/O completion 881 * callback functions. Do not declare this member variable as a 882 * bitfield to avoid a read-modify-write operation when this variable 883 * is set. 884 */ 885 unsigned int aborted; 886 887 struct scatterlist *sg; /* cmd data buffer SG vector */ 888 int sg_cnt; /* SG segments count */ 889 int bufflen; /* cmd buffer length */ 890 int offset; 891 u64 unpacked_lun; 892 enum dma_data_direction dma_data_direction; 893 894 uint16_t ctio_flags; 895 uint16_t vp_idx; 896 uint16_t loop_id; /* to save extra sess dereferences */ 897 struct qla_tgt *tgt; /* to save extra sess dereferences */ 898 struct scsi_qla_host *vha; 899 struct list_head cmd_list; 900 901 struct atio_from_isp atio; 902 903 uint8_t ctx_dsd_alloced; 904 905 /* T10-DIF */ 906 #define DIF_ERR_NONE 0 907 #define DIF_ERR_GRD 1 908 #define DIF_ERR_REF 2 909 #define DIF_ERR_APP 3 910 int8_t dif_err_code; 911 struct scatterlist *prot_sg; 912 uint32_t prot_sg_cnt; 913 uint32_t blk_sz, num_blks; 914 uint8_t scsi_status, sense_key, asc, ascq; 915 916 struct crc_context *ctx; 917 const uint8_t *cdb; 918 uint64_t lba; 919 uint16_t a_guard, e_guard, a_app_tag, e_app_tag; 920 uint32_t a_ref_tag, e_ref_tag; 921 #define DIF_BUNDL_DMA_VALID 1 922 uint16_t prot_flags; 923 924 uint64_t jiffies_at_alloc; 925 uint64_t jiffies_at_free; 926 927 enum trace_flags trc_flags; 928 }; 929 930 struct qla_tgt_sess_work_param { 931 struct list_head sess_works_list_entry; 932 933 #define QLA_TGT_SESS_WORK_ABORT 1 934 #define QLA_TGT_SESS_WORK_TM 2 935 int type; 936 937 union { 938 struct abts_recv_from_24xx abts; 939 struct imm_ntfy_from_isp tm_iocb; 940 struct atio_from_isp tm_iocb2; 941 }; 942 }; 943 944 struct qla_tgt_mgmt_cmd { 945 uint8_t cmd_type; 946 uint8_t pad[3]; 947 uint16_t tmr_func; 948 uint8_t fc_tm_rsp; 949 uint8_t abort_io_attr; 950 struct fc_port *sess; 951 struct qla_qpair *qpair; 952 struct scsi_qla_host *vha; 953 struct se_cmd se_cmd; 954 struct work_struct free_work; 955 unsigned int flags; 956 #define QLA24XX_MGMT_SEND_NACK BIT_0 957 #define QLA24XX_MGMT_ABORT_IO_ATTR_VALID BIT_1 958 uint32_t reset_count; 959 struct work_struct work; 960 uint64_t unpacked_lun; 961 union { 962 struct atio_from_isp atio; 963 struct imm_ntfy_from_isp imm_ntfy; 964 struct abts_recv_from_24xx abts; 965 } __packed orig_iocb; 966 }; 967 968 struct qla_tgt_prm { 969 struct qla_tgt_cmd *cmd; 970 struct qla_tgt *tgt; 971 void *pkt; 972 struct scatterlist *sg; /* cmd data buffer SG vector */ 973 unsigned char *sense_buffer; 974 int seg_cnt; 975 int req_cnt; 976 uint16_t rq_result; 977 int sense_buffer_len; 978 int residual; 979 int add_status_pkt; 980 /* dif */ 981 struct scatterlist *prot_sg; 982 uint16_t prot_seg_cnt; 983 uint16_t tot_dsds; 984 }; 985 986 /* Check for Switch reserved address */ 987 #define IS_SW_RESV_ADDR(_s_id) \ 988 ((_s_id.b.domain == 0xff) && ((_s_id.b.area & 0xf0) == 0xf0)) 989 990 #define QLA_TGT_XMIT_DATA 1 991 #define QLA_TGT_XMIT_STATUS 2 992 #define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA) 993 994 995 extern struct qla_tgt_data qla_target; 996 997 /* 998 * Function prototypes for qla_target.c logic used by qla2xxx LLD code. 999 */ 1000 extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *); 1001 extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *); 1002 extern int qlt_lport_register(void *, u64, u64, u64, 1003 int (*callback)(struct scsi_qla_host *, void *, u64, u64)); 1004 extern void qlt_lport_deregister(struct scsi_qla_host *); 1005 extern void qlt_unreg_sess(struct fc_port *); 1006 extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *); 1007 extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *, int); 1008 extern int __init qlt_init(void); 1009 extern void qlt_exit(void); 1010 extern void qlt_update_vp_map(struct scsi_qla_host *, int); 1011 extern void qlt_free_session_done(struct work_struct *); 1012 /* 1013 * This macro is used during early initializations when host->active_mode 1014 * is not set. Right now, ha value is ignored. 1015 */ 1016 #define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED) 1017 1018 extern int ql2x_ini_mode; 1019 1020 static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha) 1021 { 1022 return ha->host->active_mode == MODE_TARGET; 1023 } 1024 1025 static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha) 1026 { 1027 return ha->host->active_mode == MODE_INITIATOR; 1028 } 1029 1030 static inline bool qla_dual_mode_enabled(struct scsi_qla_host *ha) 1031 { 1032 return (ha->host->active_mode == MODE_DUAL); 1033 } 1034 1035 static inline uint32_t sid_to_key(const be_id_t s_id) 1036 { 1037 return s_id.domain << 16 | 1038 s_id.area << 8 | 1039 s_id.al_pa; 1040 } 1041 1042 /* 1043 * Exported symbols from qla_target.c LLD logic used by qla2xxx code.. 1044 */ 1045 extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *, 1046 response_t *); 1047 extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *); 1048 extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t); 1049 extern int qlt_abort_cmd(struct qla_tgt_cmd *); 1050 extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *); 1051 extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *); 1052 extern void qlt_free_cmd(struct qla_tgt_cmd *cmd); 1053 extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *); 1054 extern void qlt_enable_vha(struct scsi_qla_host *); 1055 extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *); 1056 extern u8 qlt_rff_id(struct scsi_qla_host *); 1057 extern void qlt_init_atio_q_entries(struct scsi_qla_host *); 1058 extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *, uint8_t); 1059 extern void qlt_24xx_config_rings(struct scsi_qla_host *); 1060 extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *, 1061 struct nvram_24xx *); 1062 extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *, 1063 struct init_cb_24xx *); 1064 extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *, 1065 struct init_cb_81xx *); 1066 extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *, 1067 struct nvram_81xx *); 1068 extern int qlt_24xx_process_response_error(struct scsi_qla_host *, 1069 struct sts_entry_24xx *); 1070 extern void qlt_modify_vp_config(struct scsi_qla_host *, 1071 struct vp_config_entry_24xx *); 1072 extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *); 1073 extern int qlt_mem_alloc(struct qla_hw_data *); 1074 extern void qlt_mem_free(struct qla_hw_data *); 1075 extern int qlt_stop_phase1(struct qla_tgt *); 1076 extern void qlt_stop_phase2(struct qla_tgt *); 1077 extern irqreturn_t qla83xx_msix_atio_q(int, void *); 1078 extern void qlt_83xx_iospace_config(struct qla_hw_data *); 1079 extern int qlt_free_qfull_cmds(struct qla_qpair *); 1080 extern void qlt_logo_completion_handler(fc_port_t *, int); 1081 extern void qlt_do_generation_tick(struct scsi_qla_host *, int *); 1082 1083 void qlt_send_resp_ctio(struct qla_qpair *, struct qla_tgt_cmd *, uint8_t, 1084 uint8_t, uint8_t, uint8_t); 1085 1086 #endif /* __QLA_TARGET_H */ 1087