1 /* 2 * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> 3 * Copyright (C) 2004 - 2005 Leonid Stoljar 4 * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> 5 * Copyright (C) 2007 - 2010 ID7 Ltd. 6 * 7 * Forward port and refactoring to modern qla2xxx and target/configfs 8 * 9 * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org> 10 * 11 * Additional file for the target driver support. 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License 15 * as published by the Free Software Foundation; either version 2 16 * of the License, or (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 */ 23 /* 24 * This is the global def file that is useful for including from the 25 * target portion. 26 */ 27 28 #ifndef __QLA_TARGET_H 29 #define __QLA_TARGET_H 30 31 #include "qla_def.h" 32 33 /* 34 * Must be changed on any change in any initiator visible interfaces or 35 * data in the target add-on 36 */ 37 #define QLA2XXX_TARGET_MAGIC 269 38 39 /* 40 * Must be changed on any change in any target visible interfaces or 41 * data in the initiator 42 */ 43 #define QLA2XXX_INITIATOR_MAGIC 57222 44 45 #define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive" 46 #define QLA2XXX_INI_MODE_STR_DISABLED "disabled" 47 #define QLA2XXX_INI_MODE_STR_ENABLED "enabled" 48 #define QLA2XXX_INI_MODE_STR_DUAL "dual" 49 50 #define QLA2XXX_INI_MODE_EXCLUSIVE 0 51 #define QLA2XXX_INI_MODE_DISABLED 1 52 #define QLA2XXX_INI_MODE_ENABLED 2 53 #define QLA2XXX_INI_MODE_DUAL 3 54 55 #define QLA2XXX_COMMAND_COUNT_INIT 250 56 #define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250 57 58 /* 59 * Used to mark which completion handles (for RIO Status's) are for CTIO's 60 * vs. regular (non-target) info. This is checked for in 61 * qla2x00_process_response_queue() to see if a handle coming back in a 62 * multi-complete should come to the tgt driver or be handled there by qla2xxx 63 */ 64 #define CTIO_COMPLETION_HANDLE_MARK BIT_29 65 #if (CTIO_COMPLETION_HANDLE_MARK <= DEFAULT_OUTSTANDING_COMMANDS) 66 #error "CTIO_COMPLETION_HANDLE_MARK not larger than " 67 "DEFAULT_OUTSTANDING_COMMANDS" 68 #endif 69 #define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK) 70 71 /* Used to mark CTIO as intermediate */ 72 #define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30 73 #define QLA_TGT_NULL_HANDLE 0 74 75 #define QLA_TGT_HANDLE_MASK 0xF0000000 76 #define QLA_QPID_HANDLE_MASK 0x00FF0000 /* qpair id mask */ 77 #define QLA_CMD_HANDLE_MASK 0x0000FFFF 78 #define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~QLA_TGT_HANDLE_MASK) 79 80 #define QLA_QPID_HANDLE_SHIFT 16 81 #define GET_QID(_h) ((_h & QLA_QPID_HANDLE_MASK) >> QLA_QPID_HANDLE_SHIFT) 82 83 84 #ifndef OF_SS_MODE_0 85 /* 86 * ISP target entries - Flags bit definitions. 87 */ 88 #define OF_SS_MODE_0 0 89 #define OF_SS_MODE_1 1 90 #define OF_SS_MODE_2 2 91 #define OF_SS_MODE_3 3 92 93 #define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */ 94 #define OF_DATA_IN BIT_6 /* Data in to initiator */ 95 /* (data from target to initiator) */ 96 #define OF_DATA_OUT BIT_7 /* Data out from initiator */ 97 /* (data from initiator to target) */ 98 #define OF_NO_DATA (BIT_7 | BIT_6) 99 #define OF_INC_RC BIT_8 /* Increment command resource count */ 100 #define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */ 101 #define OF_CONF_REQ BIT_13 /* Confirmation Requested */ 102 #define OF_TERM_EXCH BIT_14 /* Terminate exchange */ 103 #define OF_SSTS BIT_15 /* Send SCSI status */ 104 #endif 105 106 #ifndef QLA_TGT_DATASEGS_PER_CMD32 107 #define QLA_TGT_DATASEGS_PER_CMD32 3 108 #define QLA_TGT_DATASEGS_PER_CONT32 7 109 #define QLA_TGT_MAX_SG32(ql) \ 110 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \ 111 QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0) 112 113 #define QLA_TGT_DATASEGS_PER_CMD64 2 114 #define QLA_TGT_DATASEGS_PER_CONT64 5 115 #define QLA_TGT_MAX_SG64(ql) \ 116 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \ 117 QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0) 118 #endif 119 120 #ifndef QLA_TGT_DATASEGS_PER_CMD_24XX 121 #define QLA_TGT_DATASEGS_PER_CMD_24XX 1 122 #define QLA_TGT_DATASEGS_PER_CONT_24XX 5 123 #define QLA_TGT_MAX_SG_24XX(ql) \ 124 (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \ 125 QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0)) 126 #endif 127 #endif 128 129 #define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \ 130 ? le16_to_cpu((iocb)->u.isp2x.target.extended) \ 131 : (uint16_t)(iocb)->u.isp2x.target.id.standard) 132 133 #ifndef NOTIFY_ACK_TYPE 134 #define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */ 135 /* 136 * ISP queue - notify acknowledge entry structure definition. 137 * This is sent to the ISP from the target driver. 138 */ 139 struct nack_to_isp { 140 uint8_t entry_type; /* Entry type. */ 141 uint8_t entry_count; /* Entry count. */ 142 uint8_t sys_define; /* System defined. */ 143 uint8_t entry_status; /* Entry Status. */ 144 union { 145 struct { 146 uint32_t sys_define_2; /* System defined. */ 147 target_id_t target; 148 uint8_t target_id; 149 uint8_t reserved_1; 150 uint16_t flags; 151 uint16_t resp_code; 152 uint16_t status; 153 uint16_t task_flags; 154 uint16_t seq_id; 155 uint16_t srr_rx_id; 156 uint32_t srr_rel_offs; 157 uint16_t srr_ui; 158 uint16_t srr_flags; 159 uint16_t srr_reject_code; 160 uint8_t srr_reject_vendor_uniq; 161 uint8_t srr_reject_code_expl; 162 uint8_t reserved_2[24]; 163 } isp2x; 164 struct { 165 uint32_t handle; 166 uint16_t nport_handle; 167 uint16_t reserved_1; 168 uint16_t flags; 169 uint16_t srr_rx_id; 170 uint16_t status; 171 uint8_t status_subcode; 172 uint8_t fw_handle; 173 uint32_t exchange_address; 174 uint32_t srr_rel_offs; 175 uint16_t srr_ui; 176 uint16_t srr_flags; 177 uint8_t reserved_4[19]; 178 uint8_t vp_index; 179 uint8_t srr_reject_vendor_uniq; 180 uint8_t srr_reject_code_expl; 181 uint8_t srr_reject_code; 182 uint8_t reserved_5[5]; 183 } isp24; 184 } u; 185 uint8_t reserved[2]; 186 uint16_t ox_id; 187 } __packed; 188 #define NOTIFY_ACK_FLAGS_TERMINATE BIT_3 189 #define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0 190 #define NOTIFY_ACK_SRR_FLAGS_REJECT 1 191 192 #define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9 193 194 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0 195 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a 196 197 #define NOTIFY_ACK_SUCCESS 0x01 198 #endif 199 200 #ifndef ACCEPT_TGT_IO_TYPE 201 #define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */ 202 #endif 203 204 #ifndef CONTINUE_TGT_IO_TYPE 205 #define CONTINUE_TGT_IO_TYPE 0x17 206 /* 207 * ISP queue - Continue Target I/O (CTIO) entry for status mode 0 structure. 208 * This structure is sent to the ISP 2xxx from target driver. 209 */ 210 struct ctio_to_2xxx { 211 uint8_t entry_type; /* Entry type. */ 212 uint8_t entry_count; /* Entry count. */ 213 uint8_t sys_define; /* System defined. */ 214 uint8_t entry_status; /* Entry Status. */ 215 uint32_t handle; /* System defined handle */ 216 target_id_t target; 217 uint16_t rx_id; 218 uint16_t flags; 219 uint16_t status; 220 uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */ 221 uint16_t dseg_count; /* Data segment count. */ 222 uint32_t relative_offset; 223 uint32_t residual; 224 uint16_t reserved_1[3]; 225 uint16_t scsi_status; 226 uint32_t transfer_length; 227 uint32_t dseg_0_address; /* Data segment 0 address. */ 228 uint32_t dseg_0_length; /* Data segment 0 length. */ 229 uint32_t dseg_1_address; /* Data segment 1 address. */ 230 uint32_t dseg_1_length; /* Data segment 1 length. */ 231 uint32_t dseg_2_address; /* Data segment 2 address. */ 232 uint32_t dseg_2_length; /* Data segment 2 length. */ 233 } __packed; 234 #define ATIO_PATH_INVALID 0x07 235 #define ATIO_CANT_PROV_CAP 0x16 236 #define ATIO_CDB_VALID 0x3D 237 238 #define ATIO_EXEC_READ BIT_1 239 #define ATIO_EXEC_WRITE BIT_0 240 #endif 241 242 #ifndef CTIO_A64_TYPE 243 #define CTIO_A64_TYPE 0x1F 244 #define CTIO_SUCCESS 0x01 245 #define CTIO_ABORTED 0x02 246 #define CTIO_INVALID_RX_ID 0x08 247 #define CTIO_TIMEOUT 0x0B 248 #define CTIO_DIF_ERROR 0x0C /* DIF error detected */ 249 #define CTIO_LIP_RESET 0x0E 250 #define CTIO_TARGET_RESET 0x17 251 #define CTIO_PORT_UNAVAILABLE 0x28 252 #define CTIO_PORT_LOGGED_OUT 0x29 253 #define CTIO_PORT_CONF_CHANGED 0x2A 254 #define CTIO_SRR_RECEIVED 0x45 255 #endif 256 257 #ifndef CTIO_RET_TYPE 258 #define CTIO_RET_TYPE 0x17 /* CTIO return entry */ 259 #define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */ 260 261 struct fcp_hdr { 262 uint8_t r_ctl; 263 uint8_t d_id[3]; 264 uint8_t cs_ctl; 265 uint8_t s_id[3]; 266 uint8_t type; 267 uint8_t f_ctl[3]; 268 uint8_t seq_id; 269 uint8_t df_ctl; 270 uint16_t seq_cnt; 271 __be16 ox_id; 272 uint16_t rx_id; 273 uint32_t parameter; 274 } __packed; 275 276 struct fcp_hdr_le { 277 uint8_t d_id[3]; 278 uint8_t r_ctl; 279 uint8_t s_id[3]; 280 uint8_t cs_ctl; 281 uint8_t f_ctl[3]; 282 uint8_t type; 283 uint16_t seq_cnt; 284 uint8_t df_ctl; 285 uint8_t seq_id; 286 uint16_t rx_id; 287 uint16_t ox_id; 288 uint32_t parameter; 289 } __packed; 290 291 #define F_CTL_EXCH_CONTEXT_RESP BIT_23 292 #define F_CTL_SEQ_CONTEXT_RESIP BIT_22 293 #define F_CTL_LAST_SEQ BIT_20 294 #define F_CTL_END_SEQ BIT_19 295 #define F_CTL_SEQ_INITIATIVE BIT_16 296 297 #define R_CTL_BASIC_LINK_SERV 0x80 298 #define R_CTL_B_ACC 0x4 299 #define R_CTL_B_RJT 0x5 300 301 struct atio7_fcp_cmnd { 302 uint64_t lun; 303 uint8_t cmnd_ref; 304 uint8_t task_attr:3; 305 uint8_t reserved:5; 306 uint8_t task_mgmt_flags; 307 #define FCP_CMND_TASK_MGMT_CLEAR_ACA 6 308 #define FCP_CMND_TASK_MGMT_TARGET_RESET 5 309 #define FCP_CMND_TASK_MGMT_LU_RESET 4 310 #define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2 311 #define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1 312 uint8_t wrdata:1; 313 uint8_t rddata:1; 314 uint8_t add_cdb_len:6; 315 uint8_t cdb[16]; 316 /* 317 * add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4 318 * only to make sizeof(struct atio7_fcp_cmnd) be as expected by 319 * BUILD_BUG_ON in qlt_init(). 320 */ 321 uint8_t add_cdb[4]; 322 /* uint32_t data_length; */ 323 } __packed; 324 325 /* 326 * ISP queue - Accept Target I/O (ATIO) type entry IOCB structure. 327 * This is sent from the ISP to the target driver. 328 */ 329 struct atio_from_isp { 330 union { 331 struct { 332 uint16_t entry_hdr; 333 uint8_t sys_define; /* System defined. */ 334 uint8_t entry_status; /* Entry Status. */ 335 uint32_t sys_define_2; /* System defined. */ 336 target_id_t target; 337 uint16_t rx_id; 338 uint16_t flags; 339 uint16_t status; 340 uint8_t command_ref; 341 uint8_t task_codes; 342 uint8_t task_flags; 343 uint8_t execution_codes; 344 uint8_t cdb[MAX_CMDSZ]; 345 uint32_t data_length; 346 uint16_t lun; 347 uint8_t initiator_port_name[WWN_SIZE]; /* on qla23xx */ 348 uint16_t reserved_32[6]; 349 uint16_t ox_id; 350 } isp2x; 351 struct { 352 uint16_t entry_hdr; 353 uint8_t fcp_cmnd_len_low; 354 uint8_t fcp_cmnd_len_high:4; 355 uint8_t attr:4; 356 uint32_t exchange_addr; 357 #define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF 358 struct fcp_hdr fcp_hdr; 359 struct atio7_fcp_cmnd fcp_cmnd; 360 } isp24; 361 struct { 362 uint8_t entry_type; /* Entry type. */ 363 uint8_t entry_count; /* Entry count. */ 364 __le16 attr_n_length; 365 #define FCP_CMD_LENGTH_MASK 0x0fff 366 #define FCP_CMD_LENGTH_MIN 0x38 367 uint8_t data[56]; 368 uint32_t signature; 369 #define ATIO_PROCESSED 0xDEADDEAD /* Signature */ 370 } raw; 371 } u; 372 } __packed; 373 374 static inline int fcpcmd_is_corrupted(struct atio *atio) 375 { 376 if (atio->entry_type == ATIO_TYPE7 && 377 (le16_to_cpu(atio->attr_n_length & FCP_CMD_LENGTH_MASK) < 378 FCP_CMD_LENGTH_MIN)) 379 return 1; 380 else 381 return 0; 382 } 383 384 /* adjust corrupted atio so we won't trip over the same entry again. */ 385 static inline void adjust_corrupted_atio(struct atio_from_isp *atio) 386 { 387 atio->u.raw.attr_n_length = cpu_to_le16(FCP_CMD_LENGTH_MIN); 388 atio->u.isp24.fcp_cmnd.add_cdb_len = 0; 389 } 390 391 static inline int get_datalen_for_atio(struct atio_from_isp *atio) 392 { 393 int len = atio->u.isp24.fcp_cmnd.add_cdb_len; 394 395 return (be32_to_cpu(get_unaligned((uint32_t *) 396 &atio->u.isp24.fcp_cmnd.add_cdb[len * 4]))); 397 } 398 399 #define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */ 400 401 /* 402 * ISP queue - Continue Target I/O (ATIO) type 7 entry (for 24xx) structure. 403 * This structure is sent to the ISP 24xx from the target driver. 404 */ 405 406 struct ctio7_to_24xx { 407 uint8_t entry_type; /* Entry type. */ 408 uint8_t entry_count; /* Entry count. */ 409 uint8_t sys_define; /* System defined. */ 410 uint8_t entry_status; /* Entry Status. */ 411 uint32_t handle; /* System defined handle */ 412 uint16_t nport_handle; 413 #define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF 414 uint16_t timeout; 415 uint16_t dseg_count; /* Data segment count. */ 416 uint8_t vp_index; 417 uint8_t add_flags; 418 uint8_t initiator_id[3]; 419 uint8_t reserved; 420 uint32_t exchange_addr; 421 union { 422 struct { 423 uint16_t reserved1; 424 __le16 flags; 425 uint32_t residual; 426 __le16 ox_id; 427 uint16_t scsi_status; 428 uint32_t relative_offset; 429 uint32_t reserved2; 430 uint32_t transfer_length; 431 uint32_t reserved3; 432 /* Data segment 0 address. */ 433 uint32_t dseg_0_address[2]; 434 /* Data segment 0 length. */ 435 uint32_t dseg_0_length; 436 } status0; 437 struct { 438 uint16_t sense_length; 439 __le16 flags; 440 uint32_t residual; 441 __le16 ox_id; 442 uint16_t scsi_status; 443 uint16_t response_len; 444 uint16_t reserved; 445 uint8_t sense_data[24]; 446 } status1; 447 } u; 448 } __packed; 449 450 /* 451 * ISP queue - CTIO type 7 from ISP 24xx to target driver 452 * returned entry structure. 453 */ 454 struct ctio7_from_24xx { 455 uint8_t entry_type; /* Entry type. */ 456 uint8_t entry_count; /* Entry count. */ 457 uint8_t sys_define; /* System defined. */ 458 uint8_t entry_status; /* Entry Status. */ 459 uint32_t handle; /* System defined handle */ 460 uint16_t status; 461 uint16_t timeout; 462 uint16_t dseg_count; /* Data segment count. */ 463 uint8_t vp_index; 464 uint8_t reserved1[5]; 465 uint32_t exchange_address; 466 uint16_t reserved2; 467 uint16_t flags; 468 uint32_t residual; 469 uint16_t ox_id; 470 uint16_t reserved3; 471 uint32_t relative_offset; 472 uint8_t reserved4[24]; 473 } __packed; 474 475 /* CTIO7 flags values */ 476 #define CTIO7_FLAGS_SEND_STATUS BIT_15 477 #define CTIO7_FLAGS_TERMINATE BIT_14 478 #define CTIO7_FLAGS_CONFORM_REQ BIT_13 479 #define CTIO7_FLAGS_DONT_RET_CTIO BIT_8 480 #define CTIO7_FLAGS_STATUS_MODE_0 0 481 #define CTIO7_FLAGS_STATUS_MODE_1 BIT_6 482 #define CTIO7_FLAGS_STATUS_MODE_2 BIT_7 483 #define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5 484 #define CTIO7_FLAGS_CONFIRM_SATISF BIT_4 485 #define CTIO7_FLAGS_DSD_PTR BIT_2 486 #define CTIO7_FLAGS_DATA_IN BIT_1 /* data to initiator */ 487 #define CTIO7_FLAGS_DATA_OUT BIT_0 /* data from initiator */ 488 489 #define ELS_PLOGI 0x3 490 #define ELS_FLOGI 0x4 491 #define ELS_LOGO 0x5 492 #define ELS_PRLI 0x20 493 #define ELS_PRLO 0x21 494 #define ELS_TPRLO 0x24 495 #define ELS_PDISC 0x50 496 #define ELS_ADISC 0x52 497 498 /* 499 *CTIO Type CRC_2 IOCB 500 */ 501 struct ctio_crc2_to_fw { 502 uint8_t entry_type; /* Entry type. */ 503 #define CTIO_CRC2 0x7A 504 uint8_t entry_count; /* Entry count. */ 505 uint8_t sys_define; /* System defined. */ 506 uint8_t entry_status; /* Entry Status. */ 507 508 uint32_t handle; /* System handle. */ 509 uint16_t nport_handle; /* N_PORT handle. */ 510 __le16 timeout; /* Command timeout. */ 511 512 uint16_t dseg_count; /* Data segment count. */ 513 uint8_t vp_index; 514 uint8_t add_flags; /* additional flags */ 515 #define CTIO_CRC2_AF_DIF_DSD_ENA BIT_3 516 517 uint8_t initiator_id[3]; /* initiator ID */ 518 uint8_t reserved1; 519 uint32_t exchange_addr; /* rcv exchange address */ 520 uint16_t reserved2; 521 __le16 flags; /* refer to CTIO7 flags values */ 522 uint32_t residual; 523 __le16 ox_id; 524 uint16_t scsi_status; 525 __le32 relative_offset; 526 uint32_t reserved5; 527 __le32 transfer_length; /* total fc transfer length */ 528 uint32_t reserved6; 529 __le32 crc_context_address[2];/* Data segment address. */ 530 uint16_t crc_context_len; /* Data segment length. */ 531 uint16_t reserved_1; /* MUST be set to 0. */ 532 } __packed; 533 534 /* CTIO Type CRC_x Status IOCB */ 535 struct ctio_crc_from_fw { 536 uint8_t entry_type; /* Entry type. */ 537 uint8_t entry_count; /* Entry count. */ 538 uint8_t sys_define; /* System defined. */ 539 uint8_t entry_status; /* Entry Status. */ 540 541 uint32_t handle; /* System handle. */ 542 uint16_t status; 543 uint16_t timeout; /* Command timeout. */ 544 uint16_t dseg_count; /* Data segment count. */ 545 uint32_t reserved1; 546 uint16_t state_flags; 547 #define CTIO_CRC_SF_DIF_CHOPPED BIT_4 548 549 uint32_t exchange_address; /* rcv exchange address */ 550 uint16_t reserved2; 551 uint16_t flags; 552 uint32_t resid_xfer_length; 553 uint16_t ox_id; 554 uint8_t reserved3[12]; 555 uint16_t runt_guard; /* reported runt blk guard */ 556 uint8_t actual_dif[8]; 557 uint8_t expected_dif[8]; 558 } __packed; 559 560 /* 561 * ISP queue - ABTS received/response entries structure definition for 24xx. 562 */ 563 #define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */ 564 #define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */ 565 566 /* 567 * ISP queue - ABTS received IOCB entry structure definition for 24xx. 568 * The ABTS BLS received from the wire is sent to the 569 * target driver by the ISP 24xx. 570 * The IOCB is placed on the response queue. 571 */ 572 struct abts_recv_from_24xx { 573 uint8_t entry_type; /* Entry type. */ 574 uint8_t entry_count; /* Entry count. */ 575 uint8_t sys_define; /* System defined. */ 576 uint8_t entry_status; /* Entry Status. */ 577 uint8_t reserved_1[6]; 578 uint16_t nport_handle; 579 uint8_t reserved_2[2]; 580 uint8_t vp_index; 581 uint8_t reserved_3:4; 582 uint8_t sof_type:4; 583 uint32_t exchange_address; 584 struct fcp_hdr_le fcp_hdr_le; 585 uint8_t reserved_4[16]; 586 uint32_t exchange_addr_to_abort; 587 } __packed; 588 589 #define ABTS_PARAM_ABORT_SEQ BIT_0 590 591 struct ba_acc_le { 592 uint16_t reserved; 593 uint8_t seq_id_last; 594 uint8_t seq_id_valid; 595 #define SEQ_ID_VALID 0x80 596 #define SEQ_ID_INVALID 0x00 597 uint16_t rx_id; 598 uint16_t ox_id; 599 uint16_t high_seq_cnt; 600 uint16_t low_seq_cnt; 601 } __packed; 602 603 struct ba_rjt_le { 604 uint8_t vendor_uniq; 605 uint8_t reason_expl; 606 uint8_t reason_code; 607 #define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1 608 #define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9 609 uint8_t reserved; 610 } __packed; 611 612 /* 613 * ISP queue - ABTS Response IOCB entry structure definition for 24xx. 614 * The ABTS response to the ABTS received is sent by the 615 * target driver to the ISP 24xx. 616 * The IOCB is placed on the request queue. 617 */ 618 struct abts_resp_to_24xx { 619 uint8_t entry_type; /* Entry type. */ 620 uint8_t entry_count; /* Entry count. */ 621 uint8_t sys_define; /* System defined. */ 622 uint8_t entry_status; /* Entry Status. */ 623 uint32_t handle; 624 uint16_t reserved_1; 625 uint16_t nport_handle; 626 uint16_t control_flags; 627 #define ABTS_CONTR_FLG_TERM_EXCHG BIT_0 628 uint8_t vp_index; 629 uint8_t reserved_3:4; 630 uint8_t sof_type:4; 631 uint32_t exchange_address; 632 struct fcp_hdr_le fcp_hdr_le; 633 union { 634 struct ba_acc_le ba_acct; 635 struct ba_rjt_le ba_rjt; 636 } __packed payload; 637 uint32_t reserved_4; 638 uint32_t exchange_addr_to_abort; 639 } __packed; 640 641 /* 642 * ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure. 643 * The ABTS response with completion status to the ABTS response 644 * (sent by the target driver to the ISP 24xx) is sent by the 645 * ISP24xx firmware to the target driver. 646 * The IOCB is placed on the response queue. 647 */ 648 struct abts_resp_from_24xx_fw { 649 uint8_t entry_type; /* Entry type. */ 650 uint8_t entry_count; /* Entry count. */ 651 uint8_t sys_define; /* System defined. */ 652 uint8_t entry_status; /* Entry Status. */ 653 uint32_t handle; 654 uint16_t compl_status; 655 #define ABTS_RESP_COMPL_SUCCESS 0 656 #define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31 657 uint16_t nport_handle; 658 uint16_t reserved_1; 659 uint8_t reserved_2; 660 uint8_t reserved_3:4; 661 uint8_t sof_type:4; 662 uint32_t exchange_address; 663 struct fcp_hdr_le fcp_hdr_le; 664 uint8_t reserved_4[8]; 665 uint32_t error_subcode1; 666 #define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E 667 uint32_t error_subcode2; 668 uint32_t exchange_addr_to_abort; 669 } __packed; 670 671 /********************************************************************\ 672 * Type Definitions used by initiator & target halves 673 \********************************************************************/ 674 675 struct qla_tgt_mgmt_cmd; 676 struct fc_port; 677 struct qla_tgt_cmd; 678 679 /* 680 * This structure provides a template of function calls that the 681 * target driver (from within qla_target.c) can issue to the 682 * target module (tcm_qla2xxx). 683 */ 684 struct qla_tgt_func_tmpl { 685 struct qla_tgt_cmd *(*find_cmd_by_tag)(struct fc_port *, uint64_t); 686 int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *, 687 unsigned char *, uint32_t, int, int, int); 688 void (*handle_data)(struct qla_tgt_cmd *); 689 int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, u64, uint16_t, 690 uint32_t); 691 void (*free_cmd)(struct qla_tgt_cmd *); 692 void (*free_mcmd)(struct qla_tgt_mgmt_cmd *); 693 void (*free_session)(struct fc_port *); 694 695 int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *, 696 struct fc_port *); 697 void (*update_sess)(struct fc_port *, port_id_t, uint16_t, bool); 698 struct fc_port *(*find_sess_by_loop_id)(struct scsi_qla_host *, 699 const uint16_t); 700 struct fc_port *(*find_sess_by_s_id)(struct scsi_qla_host *, 701 const uint8_t *); 702 void (*clear_nacl_from_fcport_map)(struct fc_port *); 703 void (*put_sess)(struct fc_port *); 704 void (*shutdown_sess)(struct fc_port *); 705 int (*get_dif_tags)(struct qla_tgt_cmd *cmd, uint16_t *pfw_prot_opts); 706 int (*chk_dif_tags)(uint32_t tag); 707 void (*add_target)(struct scsi_qla_host *); 708 void (*remove_target)(struct scsi_qla_host *); 709 }; 710 711 int qla2x00_wait_for_hba_online(struct scsi_qla_host *); 712 713 #include <target/target_core_base.h> 714 715 #define QLA_TGT_TIMEOUT 10 /* in seconds */ 716 717 #define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */ 718 719 /* Immediate notify status constants */ 720 #define IMM_NTFY_LIP_RESET 0x000E 721 #define IMM_NTFY_LIP_LINK_REINIT 0x000F 722 #define IMM_NTFY_IOCB_OVERFLOW 0x0016 723 #define IMM_NTFY_ABORT_TASK 0x0020 724 #define IMM_NTFY_PORT_LOGOUT 0x0029 725 #define IMM_NTFY_PORT_CONFIG 0x002A 726 #define IMM_NTFY_GLBL_TPRLO 0x002D 727 #define IMM_NTFY_GLBL_LOGO 0x002E 728 #define IMM_NTFY_RESOURCE 0x0034 729 #define IMM_NTFY_MSG_RX 0x0036 730 #define IMM_NTFY_SRR 0x0045 731 #define IMM_NTFY_ELS 0x0046 732 733 /* Immediate notify task flags */ 734 #define IMM_NTFY_TASK_MGMT_SHIFT 8 735 736 #define QLA_TGT_CLEAR_ACA 0x40 737 #define QLA_TGT_TARGET_RESET 0x20 738 #define QLA_TGT_LUN_RESET 0x10 739 #define QLA_TGT_CLEAR_TS 0x04 740 #define QLA_TGT_ABORT_TS 0x02 741 #define QLA_TGT_ABORT_ALL_SESS 0xFFFF 742 #define QLA_TGT_ABORT_ALL 0xFFFE 743 #define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD 744 #define QLA_TGT_NEXUS_LOSS 0xFFFC 745 #define QLA_TGT_ABTS 0xFFFB 746 #define QLA_TGT_2G_ABORT_TASK 0xFFFA 747 748 /* Notify Acknowledge flags */ 749 #define NOTIFY_ACK_RES_COUNT BIT_8 750 #define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5 751 #define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4 752 753 /* Command's states */ 754 #define QLA_TGT_STATE_NEW 0 /* New command + target processing */ 755 #define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */ 756 #define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */ 757 #define QLA_TGT_STATE_PROCESSED 3 /* target done processing */ 758 759 /* ATIO task_codes field */ 760 #define ATIO_SIMPLE_QUEUE 0 761 #define ATIO_HEAD_OF_QUEUE 1 762 #define ATIO_ORDERED_QUEUE 2 763 #define ATIO_ACA_QUEUE 4 764 #define ATIO_UNTAGGED 5 765 766 /* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */ 767 #define FC_TM_SUCCESS 0 768 #define FC_TM_BAD_FCP_DATA 1 769 #define FC_TM_BAD_CMD 2 770 #define FC_TM_FCP_DATA_MISMATCH 3 771 #define FC_TM_REJECT 4 772 #define FC_TM_FAILED 5 773 774 #if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G) 775 #define pci_dma_lo32(a) (a & 0xffffffff) 776 #define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff) 777 #else 778 #define pci_dma_lo32(a) (a & 0xffffffff) 779 #define pci_dma_hi32(a) 0 780 #endif 781 782 #define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \ 783 (((const uint8_t *)(sense))[0] & 0x70) == 0x70) 784 785 struct qla_port_24xx_data { 786 uint8_t port_name[WWN_SIZE]; 787 uint16_t loop_id; 788 uint16_t reserved; 789 }; 790 791 struct qla_qpair_hint { 792 struct list_head hint_elem; 793 struct qla_qpair *qpair; 794 u16 cpuid; 795 uint8_t cmd_cnt; 796 }; 797 798 struct qla_tgt { 799 struct scsi_qla_host *vha; 800 struct qla_hw_data *ha; 801 struct btree_head64 lun_qpair_map; 802 struct qla_qpair_hint *qphints; 803 /* 804 * To sync between IRQ handlers and qlt_target_release(). Needed, 805 * because req_pkt() can drop/reaquire HW lock inside. Protected by 806 * HW lock. 807 */ 808 int atio_irq_cmd_count; 809 810 int sg_tablesize; 811 812 /* Target's flags, serialized by pha->hardware_lock */ 813 unsigned int link_reinit_iocb_pending:1; 814 815 /* 816 * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex 817 * OR hardware_lock for reading. 818 */ 819 int tgt_stop; /* the target mode driver is being stopped */ 820 int tgt_stopped; /* the target mode driver has been stopped */ 821 822 /* Count of sessions refering qla_tgt. Protected by hardware_lock. */ 823 int sess_count; 824 825 /* Protected by hardware_lock */ 826 struct list_head del_sess_list; 827 828 spinlock_t sess_work_lock; 829 struct list_head sess_works_list; 830 struct work_struct sess_work; 831 832 struct imm_ntfy_from_isp link_reinit_iocb; 833 wait_queue_head_t waitQ; 834 int notify_ack_expected; 835 int abts_resp_expected; 836 int modify_lun_expected; 837 atomic_t tgt_global_resets_count; 838 struct list_head tgt_list_entry; 839 }; 840 841 struct qla_tgt_sess_op { 842 struct scsi_qla_host *vha; 843 uint32_t chip_reset; 844 struct atio_from_isp atio; 845 struct work_struct work; 846 struct list_head cmd_list; 847 bool aborted; 848 struct rsp_que *rsp; 849 }; 850 851 enum trace_flags { 852 TRC_NEW_CMD = BIT_0, 853 TRC_DO_WORK = BIT_1, 854 TRC_DO_WORK_ERR = BIT_2, 855 TRC_XFR_RDY = BIT_3, 856 TRC_XMIT_DATA = BIT_4, 857 TRC_XMIT_STATUS = BIT_5, 858 TRC_SRR_RSP = BIT_6, 859 TRC_SRR_XRDY = BIT_7, 860 TRC_SRR_TERM = BIT_8, 861 TRC_SRR_CTIO = BIT_9, 862 TRC_FLUSH = BIT_10, 863 TRC_CTIO_ERR = BIT_11, 864 TRC_CTIO_DONE = BIT_12, 865 TRC_CTIO_ABORTED = BIT_13, 866 TRC_CTIO_STRANGE= BIT_14, 867 TRC_CMD_DONE = BIT_15, 868 TRC_CMD_CHK_STOP = BIT_16, 869 TRC_CMD_FREE = BIT_17, 870 TRC_DATA_IN = BIT_18, 871 TRC_ABORT = BIT_19, 872 TRC_DIF_ERR = BIT_20, 873 }; 874 875 struct qla_tgt_cmd { 876 /* 877 * Do not move cmd_type field. it needs to line up with srb->cmd_type 878 */ 879 uint8_t cmd_type; 880 uint8_t pad[7]; 881 struct se_cmd se_cmd; 882 struct fc_port *sess; 883 struct qla_qpair *qpair; 884 uint32_t reset_count; 885 int state; 886 struct work_struct work; 887 /* Sense buffer that will be mapped into outgoing status */ 888 unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; 889 890 spinlock_t cmd_lock; 891 /* to save extra sess dereferences */ 892 unsigned int conf_compl_supported:1; 893 unsigned int sg_mapped:1; 894 unsigned int free_sg:1; 895 unsigned int write_data_transferred:1; 896 unsigned int q_full:1; 897 unsigned int term_exchg:1; 898 unsigned int cmd_sent_to_fw:1; 899 unsigned int cmd_in_wq:1; 900 unsigned int aborted:1; 901 unsigned int data_work:1; 902 unsigned int data_work_free:1; 903 904 struct scatterlist *sg; /* cmd data buffer SG vector */ 905 int sg_cnt; /* SG segments count */ 906 int bufflen; /* cmd buffer length */ 907 int offset; 908 u64 unpacked_lun; 909 enum dma_data_direction dma_data_direction; 910 911 uint16_t vp_idx; 912 uint16_t loop_id; /* to save extra sess dereferences */ 913 struct qla_tgt *tgt; /* to save extra sess dereferences */ 914 struct scsi_qla_host *vha; 915 struct list_head cmd_list; 916 917 struct atio_from_isp atio; 918 919 uint8_t ctx_dsd_alloced; 920 921 /* T10-DIF */ 922 #define DIF_ERR_NONE 0 923 #define DIF_ERR_GRD 1 924 #define DIF_ERR_REF 2 925 #define DIF_ERR_APP 3 926 int8_t dif_err_code; 927 struct scatterlist *prot_sg; 928 uint32_t prot_sg_cnt; 929 uint32_t blk_sz, num_blks; 930 uint8_t scsi_status, sense_key, asc, ascq; 931 932 struct crc_context *ctx; 933 uint8_t *cdb; 934 uint64_t lba; 935 uint16_t a_guard, e_guard, a_app_tag, e_app_tag; 936 uint32_t a_ref_tag, e_ref_tag; 937 938 uint64_t jiffies_at_alloc; 939 uint64_t jiffies_at_free; 940 941 enum trace_flags trc_flags; 942 }; 943 944 struct qla_tgt_sess_work_param { 945 struct list_head sess_works_list_entry; 946 947 #define QLA_TGT_SESS_WORK_ABORT 1 948 #define QLA_TGT_SESS_WORK_TM 2 949 int type; 950 951 union { 952 struct abts_recv_from_24xx abts; 953 struct imm_ntfy_from_isp tm_iocb; 954 struct atio_from_isp tm_iocb2; 955 }; 956 }; 957 958 struct qla_tgt_mgmt_cmd { 959 uint16_t tmr_func; 960 uint8_t fc_tm_rsp; 961 struct fc_port *sess; 962 struct qla_qpair *qpair; 963 struct scsi_qla_host *vha; 964 struct se_cmd se_cmd; 965 struct work_struct free_work; 966 unsigned int flags; 967 uint32_t reset_count; 968 #define QLA24XX_MGMT_SEND_NACK 1 969 struct work_struct work; 970 uint64_t unpacked_lun; 971 union { 972 struct atio_from_isp atio; 973 struct imm_ntfy_from_isp imm_ntfy; 974 struct abts_recv_from_24xx abts; 975 } __packed orig_iocb; 976 }; 977 978 struct qla_tgt_prm { 979 struct qla_tgt_cmd *cmd; 980 struct qla_tgt *tgt; 981 void *pkt; 982 struct scatterlist *sg; /* cmd data buffer SG vector */ 983 unsigned char *sense_buffer; 984 int seg_cnt; 985 int req_cnt; 986 uint16_t rq_result; 987 int sense_buffer_len; 988 int residual; 989 int add_status_pkt; 990 /* dif */ 991 struct scatterlist *prot_sg; 992 uint16_t prot_seg_cnt; 993 uint16_t tot_dsds; 994 }; 995 996 /* Check for Switch reserved address */ 997 #define IS_SW_RESV_ADDR(_s_id) \ 998 ((_s_id.b.domain == 0xff) && ((_s_id.b.area & 0xf0) == 0xf0)) 999 1000 #define QLA_TGT_XMIT_DATA 1 1001 #define QLA_TGT_XMIT_STATUS 2 1002 #define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA) 1003 1004 1005 extern struct qla_tgt_data qla_target; 1006 1007 /* 1008 * Function prototypes for qla_target.c logic used by qla2xxx LLD code. 1009 */ 1010 extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *); 1011 extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *); 1012 extern int qlt_lport_register(void *, u64, u64, u64, 1013 int (*callback)(struct scsi_qla_host *, void *, u64, u64)); 1014 extern void qlt_lport_deregister(struct scsi_qla_host *); 1015 extern void qlt_unreg_sess(struct fc_port *); 1016 extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *); 1017 extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *, int); 1018 extern int __init qlt_init(void); 1019 extern void qlt_exit(void); 1020 extern void qlt_update_vp_map(struct scsi_qla_host *, int); 1021 extern void qlt_free_session_done(struct work_struct *); 1022 /* 1023 * This macro is used during early initializations when host->active_mode 1024 * is not set. Right now, ha value is ignored. 1025 */ 1026 #define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED) 1027 1028 extern int ql2x_ini_mode; 1029 1030 static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha) 1031 { 1032 return ha->host->active_mode == MODE_TARGET; 1033 } 1034 1035 static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha) 1036 { 1037 return ha->host->active_mode == MODE_INITIATOR; 1038 } 1039 1040 static inline bool qla_dual_mode_enabled(struct scsi_qla_host *ha) 1041 { 1042 return (ha->host->active_mode == MODE_DUAL); 1043 } 1044 1045 static inline uint32_t sid_to_key(const uint8_t *s_id) 1046 { 1047 uint32_t key; 1048 1049 key = (((unsigned long)s_id[0] << 16) | 1050 ((unsigned long)s_id[1] << 8) | 1051 (unsigned long)s_id[2]); 1052 return key; 1053 } 1054 1055 static inline void sid_to_portid(const uint8_t *s_id, port_id_t *p) 1056 { 1057 memset(p, 0, sizeof(*p)); 1058 p->b.domain = s_id[0]; 1059 p->b.area = s_id[1]; 1060 p->b.al_pa = s_id[2]; 1061 } 1062 1063 /* 1064 * Exported symbols from qla_target.c LLD logic used by qla2xxx code.. 1065 */ 1066 extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *, 1067 response_t *); 1068 extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *); 1069 extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t); 1070 extern int qlt_abort_cmd(struct qla_tgt_cmd *); 1071 extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *); 1072 extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *); 1073 extern void qlt_free_cmd(struct qla_tgt_cmd *cmd); 1074 extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *); 1075 extern void qlt_enable_vha(struct scsi_qla_host *); 1076 extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *); 1077 extern u8 qlt_rff_id(struct scsi_qla_host *); 1078 extern void qlt_init_atio_q_entries(struct scsi_qla_host *); 1079 extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *, uint8_t); 1080 extern void qlt_24xx_config_rings(struct scsi_qla_host *); 1081 extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *, 1082 struct nvram_24xx *); 1083 extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *, 1084 struct init_cb_24xx *); 1085 extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *, 1086 struct init_cb_81xx *); 1087 extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *, 1088 struct nvram_81xx *); 1089 extern int qlt_24xx_process_response_error(struct scsi_qla_host *, 1090 struct sts_entry_24xx *); 1091 extern void qlt_modify_vp_config(struct scsi_qla_host *, 1092 struct vp_config_entry_24xx *); 1093 extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *); 1094 extern int qlt_mem_alloc(struct qla_hw_data *); 1095 extern void qlt_mem_free(struct qla_hw_data *); 1096 extern int qlt_stop_phase1(struct qla_tgt *); 1097 extern void qlt_stop_phase2(struct qla_tgt *); 1098 extern irqreturn_t qla83xx_msix_atio_q(int, void *); 1099 extern void qlt_83xx_iospace_config(struct qla_hw_data *); 1100 extern int qlt_free_qfull_cmds(struct qla_qpair *); 1101 extern void qlt_logo_completion_handler(fc_port_t *, int); 1102 extern void qlt_do_generation_tick(struct scsi_qla_host *, int *); 1103 1104 void qlt_send_resp_ctio(struct qla_qpair *, struct qla_tgt_cmd *, uint8_t, 1105 uint8_t, uint8_t, uint8_t); 1106 extern void qlt_abort_cmd_on_host_reset(struct scsi_qla_host *, 1107 struct qla_tgt_cmd *); 1108 1109 #endif /* __QLA_TARGET_H */ 1110