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 49 #define QLA2XXX_INI_MODE_EXCLUSIVE 0 50 #define QLA2XXX_INI_MODE_DISABLED 1 51 #define QLA2XXX_INI_MODE_ENABLED 2 52 53 #define QLA2XXX_COMMAND_COUNT_INIT 250 54 #define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250 55 56 /* 57 * Used to mark which completion handles (for RIO Status's) are for CTIO's 58 * vs. regular (non-target) info. This is checked for in 59 * qla2x00_process_response_queue() to see if a handle coming back in a 60 * multi-complete should come to the tgt driver or be handled there by qla2xxx 61 */ 62 #define CTIO_COMPLETION_HANDLE_MARK BIT_29 63 #if (CTIO_COMPLETION_HANDLE_MARK <= DEFAULT_OUTSTANDING_COMMANDS) 64 #error "CTIO_COMPLETION_HANDLE_MARK not larger than " 65 "DEFAULT_OUTSTANDING_COMMANDS" 66 #endif 67 #define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK) 68 69 /* Used to mark CTIO as intermediate */ 70 #define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30 71 72 #ifndef OF_SS_MODE_0 73 /* 74 * ISP target entries - Flags bit definitions. 75 */ 76 #define OF_SS_MODE_0 0 77 #define OF_SS_MODE_1 1 78 #define OF_SS_MODE_2 2 79 #define OF_SS_MODE_3 3 80 81 #define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */ 82 #define OF_DATA_IN BIT_6 /* Data in to initiator */ 83 /* (data from target to initiator) */ 84 #define OF_DATA_OUT BIT_7 /* Data out from initiator */ 85 /* (data from initiator to target) */ 86 #define OF_NO_DATA (BIT_7 | BIT_6) 87 #define OF_INC_RC BIT_8 /* Increment command resource count */ 88 #define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */ 89 #define OF_CONF_REQ BIT_13 /* Confirmation Requested */ 90 #define OF_TERM_EXCH BIT_14 /* Terminate exchange */ 91 #define OF_SSTS BIT_15 /* Send SCSI status */ 92 #endif 93 94 #ifndef QLA_TGT_DATASEGS_PER_CMD32 95 #define QLA_TGT_DATASEGS_PER_CMD32 3 96 #define QLA_TGT_DATASEGS_PER_CONT32 7 97 #define QLA_TGT_MAX_SG32(ql) \ 98 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \ 99 QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0) 100 101 #define QLA_TGT_DATASEGS_PER_CMD64 2 102 #define QLA_TGT_DATASEGS_PER_CONT64 5 103 #define QLA_TGT_MAX_SG64(ql) \ 104 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \ 105 QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0) 106 #endif 107 108 #ifndef QLA_TGT_DATASEGS_PER_CMD_24XX 109 #define QLA_TGT_DATASEGS_PER_CMD_24XX 1 110 #define QLA_TGT_DATASEGS_PER_CONT_24XX 5 111 #define QLA_TGT_MAX_SG_24XX(ql) \ 112 (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \ 113 QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0)) 114 #endif 115 #endif 116 117 #define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \ 118 ? le16_to_cpu((iocb)->u.isp2x.target.extended) \ 119 : (uint16_t)(iocb)->u.isp2x.target.id.standard) 120 121 #ifndef IMMED_NOTIFY_TYPE 122 #define IMMED_NOTIFY_TYPE 0x0D /* Immediate notify entry. */ 123 /* 124 * ISP queue - immediate notify entry structure definition. 125 * This is sent by the ISP to the Target driver. 126 * This IOCB would have report of events sent by the 127 * initiator, that needs to be handled by the target 128 * driver immediately. 129 */ 130 struct imm_ntfy_from_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 uint32_t sys_define_2; /* System defined. */ 138 target_id_t target; 139 uint16_t lun; 140 uint8_t target_id; 141 uint8_t reserved_1; 142 uint16_t status_modifier; 143 uint16_t status; 144 uint16_t task_flags; 145 uint16_t seq_id; 146 uint16_t srr_rx_id; 147 uint32_t srr_rel_offs; 148 uint16_t srr_ui; 149 #define SRR_IU_DATA_IN 0x1 150 #define SRR_IU_DATA_OUT 0x5 151 #define SRR_IU_STATUS 0x7 152 uint16_t srr_ox_id; 153 uint8_t reserved_2[28]; 154 } isp2x; 155 struct { 156 uint32_t reserved; 157 uint16_t nport_handle; 158 uint16_t reserved_2; 159 uint16_t flags; 160 #define NOTIFY24XX_FLAGS_GLOBAL_TPRLO BIT_1 161 #define NOTIFY24XX_FLAGS_PUREX_IOCB BIT_0 162 uint16_t srr_rx_id; 163 uint16_t status; 164 uint8_t status_subcode; 165 uint8_t fw_handle; 166 uint32_t exchange_address; 167 uint32_t srr_rel_offs; 168 uint16_t srr_ui; 169 uint16_t srr_ox_id; 170 uint8_t reserved_4[19]; 171 uint8_t vp_index; 172 uint32_t reserved_5; 173 uint8_t port_id[3]; 174 uint8_t reserved_6; 175 } isp24; 176 } u; 177 uint16_t reserved_7; 178 uint16_t ox_id; 179 } __packed; 180 #endif 181 182 #ifndef NOTIFY_ACK_TYPE 183 #define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */ 184 /* 185 * ISP queue - notify acknowledge entry structure definition. 186 * This is sent to the ISP from the target driver. 187 */ 188 struct nack_to_isp { 189 uint8_t entry_type; /* Entry type. */ 190 uint8_t entry_count; /* Entry count. */ 191 uint8_t sys_define; /* System defined. */ 192 uint8_t entry_status; /* Entry Status. */ 193 union { 194 struct { 195 uint32_t sys_define_2; /* System defined. */ 196 target_id_t target; 197 uint8_t target_id; 198 uint8_t reserved_1; 199 uint16_t flags; 200 uint16_t resp_code; 201 uint16_t status; 202 uint16_t task_flags; 203 uint16_t seq_id; 204 uint16_t srr_rx_id; 205 uint32_t srr_rel_offs; 206 uint16_t srr_ui; 207 uint16_t srr_flags; 208 uint16_t srr_reject_code; 209 uint8_t srr_reject_vendor_uniq; 210 uint8_t srr_reject_code_expl; 211 uint8_t reserved_2[24]; 212 } isp2x; 213 struct { 214 uint32_t handle; 215 uint16_t nport_handle; 216 uint16_t reserved_1; 217 uint16_t flags; 218 uint16_t srr_rx_id; 219 uint16_t status; 220 uint8_t status_subcode; 221 uint8_t fw_handle; 222 uint32_t exchange_address; 223 uint32_t srr_rel_offs; 224 uint16_t srr_ui; 225 uint16_t srr_flags; 226 uint8_t reserved_4[19]; 227 uint8_t vp_index; 228 uint8_t srr_reject_vendor_uniq; 229 uint8_t srr_reject_code_expl; 230 uint8_t srr_reject_code; 231 uint8_t reserved_5[5]; 232 } isp24; 233 } u; 234 uint8_t reserved[2]; 235 uint16_t ox_id; 236 } __packed; 237 #define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0 238 #define NOTIFY_ACK_SRR_FLAGS_REJECT 1 239 240 #define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9 241 242 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0 243 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a 244 245 #define NOTIFY_ACK_SUCCESS 0x01 246 #endif 247 248 #ifndef ACCEPT_TGT_IO_TYPE 249 #define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */ 250 #endif 251 252 #ifndef CONTINUE_TGT_IO_TYPE 253 #define CONTINUE_TGT_IO_TYPE 0x17 254 /* 255 * ISP queue - Continue Target I/O (CTIO) entry for status mode 0 structure. 256 * This structure is sent to the ISP 2xxx from target driver. 257 */ 258 struct ctio_to_2xxx { 259 uint8_t entry_type; /* Entry type. */ 260 uint8_t entry_count; /* Entry count. */ 261 uint8_t sys_define; /* System defined. */ 262 uint8_t entry_status; /* Entry Status. */ 263 uint32_t handle; /* System defined handle */ 264 target_id_t target; 265 uint16_t rx_id; 266 uint16_t flags; 267 uint16_t status; 268 uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */ 269 uint16_t dseg_count; /* Data segment count. */ 270 uint32_t relative_offset; 271 uint32_t residual; 272 uint16_t reserved_1[3]; 273 uint16_t scsi_status; 274 uint32_t transfer_length; 275 uint32_t dseg_0_address; /* Data segment 0 address. */ 276 uint32_t dseg_0_length; /* Data segment 0 length. */ 277 uint32_t dseg_1_address; /* Data segment 1 address. */ 278 uint32_t dseg_1_length; /* Data segment 1 length. */ 279 uint32_t dseg_2_address; /* Data segment 2 address. */ 280 uint32_t dseg_2_length; /* Data segment 2 length. */ 281 } __packed; 282 #define ATIO_PATH_INVALID 0x07 283 #define ATIO_CANT_PROV_CAP 0x16 284 #define ATIO_CDB_VALID 0x3D 285 286 #define ATIO_EXEC_READ BIT_1 287 #define ATIO_EXEC_WRITE BIT_0 288 #endif 289 290 #ifndef CTIO_A64_TYPE 291 #define CTIO_A64_TYPE 0x1F 292 #define CTIO_SUCCESS 0x01 293 #define CTIO_ABORTED 0x02 294 #define CTIO_INVALID_RX_ID 0x08 295 #define CTIO_TIMEOUT 0x0B 296 #define CTIO_DIF_ERROR 0x0C /* DIF error detected */ 297 #define CTIO_LIP_RESET 0x0E 298 #define CTIO_TARGET_RESET 0x17 299 #define CTIO_PORT_UNAVAILABLE 0x28 300 #define CTIO_PORT_LOGGED_OUT 0x29 301 #define CTIO_PORT_CONF_CHANGED 0x2A 302 #define CTIO_SRR_RECEIVED 0x45 303 #endif 304 305 #ifndef CTIO_RET_TYPE 306 #define CTIO_RET_TYPE 0x17 /* CTIO return entry */ 307 #define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */ 308 309 struct fcp_hdr { 310 uint8_t r_ctl; 311 uint8_t d_id[3]; 312 uint8_t cs_ctl; 313 uint8_t s_id[3]; 314 uint8_t type; 315 uint8_t f_ctl[3]; 316 uint8_t seq_id; 317 uint8_t df_ctl; 318 uint16_t seq_cnt; 319 __be16 ox_id; 320 uint16_t rx_id; 321 uint32_t parameter; 322 } __packed; 323 324 struct fcp_hdr_le { 325 uint8_t d_id[3]; 326 uint8_t r_ctl; 327 uint8_t s_id[3]; 328 uint8_t cs_ctl; 329 uint8_t f_ctl[3]; 330 uint8_t type; 331 uint16_t seq_cnt; 332 uint8_t df_ctl; 333 uint8_t seq_id; 334 uint16_t rx_id; 335 uint16_t ox_id; 336 uint32_t parameter; 337 } __packed; 338 339 #define F_CTL_EXCH_CONTEXT_RESP BIT_23 340 #define F_CTL_SEQ_CONTEXT_RESIP BIT_22 341 #define F_CTL_LAST_SEQ BIT_20 342 #define F_CTL_END_SEQ BIT_19 343 #define F_CTL_SEQ_INITIATIVE BIT_16 344 345 #define R_CTL_BASIC_LINK_SERV 0x80 346 #define R_CTL_B_ACC 0x4 347 #define R_CTL_B_RJT 0x5 348 349 struct atio7_fcp_cmnd { 350 uint64_t lun; 351 uint8_t cmnd_ref; 352 uint8_t task_attr:3; 353 uint8_t reserved:5; 354 uint8_t task_mgmt_flags; 355 #define FCP_CMND_TASK_MGMT_CLEAR_ACA 6 356 #define FCP_CMND_TASK_MGMT_TARGET_RESET 5 357 #define FCP_CMND_TASK_MGMT_LU_RESET 4 358 #define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2 359 #define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1 360 uint8_t wrdata:1; 361 uint8_t rddata:1; 362 uint8_t add_cdb_len:6; 363 uint8_t cdb[16]; 364 /* 365 * add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4 366 * only to make sizeof(struct atio7_fcp_cmnd) be as expected by 367 * BUILD_BUG_ON in qlt_init(). 368 */ 369 uint8_t add_cdb[4]; 370 /* uint32_t data_length; */ 371 } __packed; 372 373 /* 374 * ISP queue - Accept Target I/O (ATIO) type entry IOCB structure. 375 * This is sent from the ISP to the target driver. 376 */ 377 struct atio_from_isp { 378 union { 379 struct { 380 uint16_t entry_hdr; 381 uint8_t sys_define; /* System defined. */ 382 uint8_t entry_status; /* Entry Status. */ 383 uint32_t sys_define_2; /* System defined. */ 384 target_id_t target; 385 uint16_t rx_id; 386 uint16_t flags; 387 uint16_t status; 388 uint8_t command_ref; 389 uint8_t task_codes; 390 uint8_t task_flags; 391 uint8_t execution_codes; 392 uint8_t cdb[MAX_CMDSZ]; 393 uint32_t data_length; 394 uint16_t lun; 395 uint8_t initiator_port_name[WWN_SIZE]; /* on qla23xx */ 396 uint16_t reserved_32[6]; 397 uint16_t ox_id; 398 } isp2x; 399 struct { 400 uint16_t entry_hdr; 401 uint8_t fcp_cmnd_len_low; 402 uint8_t fcp_cmnd_len_high:4; 403 uint8_t attr:4; 404 uint32_t exchange_addr; 405 #define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF 406 struct fcp_hdr fcp_hdr; 407 struct atio7_fcp_cmnd fcp_cmnd; 408 } isp24; 409 struct { 410 uint8_t entry_type; /* Entry type. */ 411 uint8_t entry_count; /* Entry count. */ 412 uint8_t data[58]; 413 uint32_t signature; 414 #define ATIO_PROCESSED 0xDEADDEAD /* Signature */ 415 } raw; 416 } u; 417 } __packed; 418 419 #define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */ 420 421 /* 422 * ISP queue - Continue Target I/O (ATIO) type 7 entry (for 24xx) structure. 423 * This structure is sent to the ISP 24xx from the target driver. 424 */ 425 426 struct ctio7_to_24xx { 427 uint8_t entry_type; /* Entry type. */ 428 uint8_t entry_count; /* Entry count. */ 429 uint8_t sys_define; /* System defined. */ 430 uint8_t entry_status; /* Entry Status. */ 431 uint32_t handle; /* System defined handle */ 432 uint16_t nport_handle; 433 #define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF 434 uint16_t timeout; 435 uint16_t dseg_count; /* Data segment count. */ 436 uint8_t vp_index; 437 uint8_t add_flags; 438 uint8_t initiator_id[3]; 439 uint8_t reserved; 440 uint32_t exchange_addr; 441 union { 442 struct { 443 uint16_t reserved1; 444 __le16 flags; 445 uint32_t residual; 446 __le16 ox_id; 447 uint16_t scsi_status; 448 uint32_t relative_offset; 449 uint32_t reserved2; 450 uint32_t transfer_length; 451 uint32_t reserved3; 452 /* Data segment 0 address. */ 453 uint32_t dseg_0_address[2]; 454 /* Data segment 0 length. */ 455 uint32_t dseg_0_length; 456 } status0; 457 struct { 458 uint16_t sense_length; 459 uint16_t flags; 460 uint32_t residual; 461 __le16 ox_id; 462 uint16_t scsi_status; 463 uint16_t response_len; 464 uint16_t reserved; 465 uint8_t sense_data[24]; 466 } status1; 467 } u; 468 } __packed; 469 470 /* 471 * ISP queue - CTIO type 7 from ISP 24xx to target driver 472 * returned entry structure. 473 */ 474 struct ctio7_from_24xx { 475 uint8_t entry_type; /* Entry type. */ 476 uint8_t entry_count; /* Entry count. */ 477 uint8_t sys_define; /* System defined. */ 478 uint8_t entry_status; /* Entry Status. */ 479 uint32_t handle; /* System defined handle */ 480 uint16_t status; 481 uint16_t timeout; 482 uint16_t dseg_count; /* Data segment count. */ 483 uint8_t vp_index; 484 uint8_t reserved1[5]; 485 uint32_t exchange_address; 486 uint16_t reserved2; 487 uint16_t flags; 488 uint32_t residual; 489 uint16_t ox_id; 490 uint16_t reserved3; 491 uint32_t relative_offset; 492 uint8_t reserved4[24]; 493 } __packed; 494 495 /* CTIO7 flags values */ 496 #define CTIO7_FLAGS_SEND_STATUS BIT_15 497 #define CTIO7_FLAGS_TERMINATE BIT_14 498 #define CTIO7_FLAGS_CONFORM_REQ BIT_13 499 #define CTIO7_FLAGS_DONT_RET_CTIO BIT_8 500 #define CTIO7_FLAGS_STATUS_MODE_0 0 501 #define CTIO7_FLAGS_STATUS_MODE_1 BIT_6 502 #define CTIO7_FLAGS_STATUS_MODE_2 BIT_7 503 #define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5 504 #define CTIO7_FLAGS_CONFIRM_SATISF BIT_4 505 #define CTIO7_FLAGS_DSD_PTR BIT_2 506 #define CTIO7_FLAGS_DATA_IN BIT_1 /* data to initiator */ 507 #define CTIO7_FLAGS_DATA_OUT BIT_0 /* data from initiator */ 508 509 #define ELS_PLOGI 0x3 510 #define ELS_FLOGI 0x4 511 #define ELS_LOGO 0x5 512 #define ELS_PRLI 0x20 513 #define ELS_PRLO 0x21 514 #define ELS_TPRLO 0x24 515 #define ELS_PDISC 0x50 516 #define ELS_ADISC 0x52 517 518 /* 519 *CTIO Type CRC_2 IOCB 520 */ 521 struct ctio_crc2_to_fw { 522 uint8_t entry_type; /* Entry type. */ 523 #define CTIO_CRC2 0x7A 524 uint8_t entry_count; /* Entry count. */ 525 uint8_t sys_define; /* System defined. */ 526 uint8_t entry_status; /* Entry Status. */ 527 528 uint32_t handle; /* System handle. */ 529 uint16_t nport_handle; /* N_PORT handle. */ 530 __le16 timeout; /* Command timeout. */ 531 532 uint16_t dseg_count; /* Data segment count. */ 533 uint8_t vp_index; 534 uint8_t add_flags; /* additional flags */ 535 #define CTIO_CRC2_AF_DIF_DSD_ENA BIT_3 536 537 uint8_t initiator_id[3]; /* initiator ID */ 538 uint8_t reserved1; 539 uint32_t exchange_addr; /* rcv exchange address */ 540 uint16_t reserved2; 541 __le16 flags; /* refer to CTIO7 flags values */ 542 uint32_t residual; 543 __le16 ox_id; 544 uint16_t scsi_status; 545 __le32 relative_offset; 546 uint32_t reserved5; 547 __le32 transfer_length; /* total fc transfer length */ 548 uint32_t reserved6; 549 __le32 crc_context_address[2];/* Data segment address. */ 550 uint16_t crc_context_len; /* Data segment length. */ 551 uint16_t reserved_1; /* MUST be set to 0. */ 552 } __packed; 553 554 /* CTIO Type CRC_x Status IOCB */ 555 struct ctio_crc_from_fw { 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. */ 560 561 uint32_t handle; /* System handle. */ 562 uint16_t status; 563 uint16_t timeout; /* Command timeout. */ 564 uint16_t dseg_count; /* Data segment count. */ 565 uint32_t reserved1; 566 uint16_t state_flags; 567 #define CTIO_CRC_SF_DIF_CHOPPED BIT_4 568 569 uint32_t exchange_address; /* rcv exchange address */ 570 uint16_t reserved2; 571 uint16_t flags; 572 uint32_t resid_xfer_length; 573 uint16_t ox_id; 574 uint8_t reserved3[12]; 575 uint16_t runt_guard; /* reported runt blk guard */ 576 uint8_t actual_dif[8]; 577 uint8_t expected_dif[8]; 578 } __packed; 579 580 /* 581 * ISP queue - ABTS received/response entries structure definition for 24xx. 582 */ 583 #define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */ 584 #define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */ 585 586 /* 587 * ISP queue - ABTS received IOCB entry structure definition for 24xx. 588 * The ABTS BLS received from the wire is sent to the 589 * target driver by the ISP 24xx. 590 * The IOCB is placed on the response queue. 591 */ 592 struct abts_recv_from_24xx { 593 uint8_t entry_type; /* Entry type. */ 594 uint8_t entry_count; /* Entry count. */ 595 uint8_t sys_define; /* System defined. */ 596 uint8_t entry_status; /* Entry Status. */ 597 uint8_t reserved_1[6]; 598 uint16_t nport_handle; 599 uint8_t reserved_2[2]; 600 uint8_t vp_index; 601 uint8_t reserved_3:4; 602 uint8_t sof_type:4; 603 uint32_t exchange_address; 604 struct fcp_hdr_le fcp_hdr_le; 605 uint8_t reserved_4[16]; 606 uint32_t exchange_addr_to_abort; 607 } __packed; 608 609 #define ABTS_PARAM_ABORT_SEQ BIT_0 610 611 struct ba_acc_le { 612 uint16_t reserved; 613 uint8_t seq_id_last; 614 uint8_t seq_id_valid; 615 #define SEQ_ID_VALID 0x80 616 #define SEQ_ID_INVALID 0x00 617 uint16_t rx_id; 618 uint16_t ox_id; 619 uint16_t high_seq_cnt; 620 uint16_t low_seq_cnt; 621 } __packed; 622 623 struct ba_rjt_le { 624 uint8_t vendor_uniq; 625 uint8_t reason_expl; 626 uint8_t reason_code; 627 #define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1 628 #define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9 629 uint8_t reserved; 630 } __packed; 631 632 /* 633 * ISP queue - ABTS Response IOCB entry structure definition for 24xx. 634 * The ABTS response to the ABTS received is sent by the 635 * target driver to the ISP 24xx. 636 * The IOCB is placed on the request queue. 637 */ 638 struct abts_resp_to_24xx { 639 uint8_t entry_type; /* Entry type. */ 640 uint8_t entry_count; /* Entry count. */ 641 uint8_t sys_define; /* System defined. */ 642 uint8_t entry_status; /* Entry Status. */ 643 uint32_t handle; 644 uint16_t reserved_1; 645 uint16_t nport_handle; 646 uint16_t control_flags; 647 #define ABTS_CONTR_FLG_TERM_EXCHG BIT_0 648 uint8_t vp_index; 649 uint8_t reserved_3:4; 650 uint8_t sof_type:4; 651 uint32_t exchange_address; 652 struct fcp_hdr_le fcp_hdr_le; 653 union { 654 struct ba_acc_le ba_acct; 655 struct ba_rjt_le ba_rjt; 656 } __packed payload; 657 uint32_t reserved_4; 658 uint32_t exchange_addr_to_abort; 659 } __packed; 660 661 /* 662 * ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure. 663 * The ABTS response with completion status to the ABTS response 664 * (sent by the target driver to the ISP 24xx) is sent by the 665 * ISP24xx firmware to the target driver. 666 * The IOCB is placed on the response queue. 667 */ 668 struct abts_resp_from_24xx_fw { 669 uint8_t entry_type; /* Entry type. */ 670 uint8_t entry_count; /* Entry count. */ 671 uint8_t sys_define; /* System defined. */ 672 uint8_t entry_status; /* Entry Status. */ 673 uint32_t handle; 674 uint16_t compl_status; 675 #define ABTS_RESP_COMPL_SUCCESS 0 676 #define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31 677 uint16_t nport_handle; 678 uint16_t reserved_1; 679 uint8_t reserved_2; 680 uint8_t reserved_3:4; 681 uint8_t sof_type:4; 682 uint32_t exchange_address; 683 struct fcp_hdr_le fcp_hdr_le; 684 uint8_t reserved_4[8]; 685 uint32_t error_subcode1; 686 #define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E 687 uint32_t error_subcode2; 688 uint32_t exchange_addr_to_abort; 689 } __packed; 690 691 /********************************************************************\ 692 * Type Definitions used by initiator & target halves 693 \********************************************************************/ 694 695 struct qla_tgt_mgmt_cmd; 696 struct qla_tgt_sess; 697 698 /* 699 * This structure provides a template of function calls that the 700 * target driver (from within qla_target.c) can issue to the 701 * target module (tcm_qla2xxx). 702 */ 703 struct qla_tgt_func_tmpl { 704 705 int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *, 706 unsigned char *, uint32_t, int, int, int); 707 void (*handle_data)(struct qla_tgt_cmd *); 708 void (*handle_dif_err)(struct qla_tgt_cmd *); 709 int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t, 710 uint32_t); 711 void (*free_cmd)(struct qla_tgt_cmd *); 712 void (*free_mcmd)(struct qla_tgt_mgmt_cmd *); 713 void (*free_session)(struct qla_tgt_sess *); 714 715 int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *, 716 void *, uint8_t *, uint16_t); 717 void (*update_sess)(struct qla_tgt_sess *, port_id_t, uint16_t, bool); 718 struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *, 719 const uint16_t); 720 struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *, 721 const uint8_t *); 722 void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *); 723 void (*put_sess)(struct qla_tgt_sess *); 724 void (*shutdown_sess)(struct qla_tgt_sess *); 725 }; 726 727 int qla2x00_wait_for_hba_online(struct scsi_qla_host *); 728 729 #include <target/target_core_base.h> 730 731 #define QLA_TGT_TIMEOUT 10 /* in seconds */ 732 733 #define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */ 734 735 /* Immediate notify status constants */ 736 #define IMM_NTFY_LIP_RESET 0x000E 737 #define IMM_NTFY_LIP_LINK_REINIT 0x000F 738 #define IMM_NTFY_IOCB_OVERFLOW 0x0016 739 #define IMM_NTFY_ABORT_TASK 0x0020 740 #define IMM_NTFY_PORT_LOGOUT 0x0029 741 #define IMM_NTFY_PORT_CONFIG 0x002A 742 #define IMM_NTFY_GLBL_TPRLO 0x002D 743 #define IMM_NTFY_GLBL_LOGO 0x002E 744 #define IMM_NTFY_RESOURCE 0x0034 745 #define IMM_NTFY_MSG_RX 0x0036 746 #define IMM_NTFY_SRR 0x0045 747 #define IMM_NTFY_ELS 0x0046 748 749 /* Immediate notify task flags */ 750 #define IMM_NTFY_TASK_MGMT_SHIFT 8 751 752 #define QLA_TGT_CLEAR_ACA 0x40 753 #define QLA_TGT_TARGET_RESET 0x20 754 #define QLA_TGT_LUN_RESET 0x10 755 #define QLA_TGT_CLEAR_TS 0x04 756 #define QLA_TGT_ABORT_TS 0x02 757 #define QLA_TGT_ABORT_ALL_SESS 0xFFFF 758 #define QLA_TGT_ABORT_ALL 0xFFFE 759 #define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD 760 #define QLA_TGT_NEXUS_LOSS 0xFFFC 761 762 /* Notify Acknowledge flags */ 763 #define NOTIFY_ACK_RES_COUNT BIT_8 764 #define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5 765 #define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4 766 767 /* Command's states */ 768 #define QLA_TGT_STATE_NEW 0 /* New command + target processing */ 769 #define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */ 770 #define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */ 771 #define QLA_TGT_STATE_PROCESSED 3 /* target done processing */ 772 #define QLA_TGT_STATE_ABORTED 4 /* Command aborted */ 773 774 /* Special handles */ 775 #define QLA_TGT_NULL_HANDLE 0 776 #define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK) 777 778 /* ATIO task_codes field */ 779 #define ATIO_SIMPLE_QUEUE 0 780 #define ATIO_HEAD_OF_QUEUE 1 781 #define ATIO_ORDERED_QUEUE 2 782 #define ATIO_ACA_QUEUE 4 783 #define ATIO_UNTAGGED 5 784 785 /* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */ 786 #define FC_TM_SUCCESS 0 787 #define FC_TM_BAD_FCP_DATA 1 788 #define FC_TM_BAD_CMD 2 789 #define FC_TM_FCP_DATA_MISMATCH 3 790 #define FC_TM_REJECT 4 791 #define FC_TM_FAILED 5 792 793 /* 794 * Error code of qlt_pre_xmit_response() meaning that cmd's exchange was 795 * terminated, so no more actions is needed and success should be returned 796 * to target. 797 */ 798 #define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED 0x1717 799 800 #if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G) 801 #define pci_dma_lo32(a) (a & 0xffffffff) 802 #define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff) 803 #else 804 #define pci_dma_lo32(a) (a & 0xffffffff) 805 #define pci_dma_hi32(a) 0 806 #endif 807 808 #define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \ 809 (((const uint8_t *)(sense))[0] & 0x70) == 0x70) 810 811 struct qla_port_24xx_data { 812 uint8_t port_name[WWN_SIZE]; 813 uint16_t loop_id; 814 uint16_t reserved; 815 }; 816 817 struct qla_tgt { 818 struct scsi_qla_host *vha; 819 struct qla_hw_data *ha; 820 821 /* 822 * To sync between IRQ handlers and qlt_target_release(). Needed, 823 * because req_pkt() can drop/reaquire HW lock inside. Protected by 824 * HW lock. 825 */ 826 int irq_cmd_count; 827 828 int datasegs_per_cmd, datasegs_per_cont, sg_tablesize; 829 830 /* Target's flags, serialized by pha->hardware_lock */ 831 unsigned int tgt_enable_64bit_addr:1; /* 64-bits PCI addr enabled */ 832 unsigned int link_reinit_iocb_pending:1; 833 834 /* 835 * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex 836 * OR hardware_lock for reading. 837 */ 838 int tgt_stop; /* the target mode driver is being stopped */ 839 int tgt_stopped; /* the target mode driver has been stopped */ 840 841 /* Count of sessions refering qla_tgt. Protected by hardware_lock. */ 842 int sess_count; 843 844 /* Protected by hardware_lock. Addition also protected by tgt_mutex. */ 845 struct list_head sess_list; 846 847 /* Protected by hardware_lock */ 848 struct list_head del_sess_list; 849 struct delayed_work sess_del_work; 850 851 spinlock_t sess_work_lock; 852 struct list_head sess_works_list; 853 struct work_struct sess_work; 854 855 struct imm_ntfy_from_isp link_reinit_iocb; 856 wait_queue_head_t waitQ; 857 int notify_ack_expected; 858 int abts_resp_expected; 859 int modify_lun_expected; 860 861 int ctio_srr_id; 862 int imm_srr_id; 863 spinlock_t srr_lock; 864 struct list_head srr_ctio_list; 865 struct list_head srr_imm_list; 866 struct work_struct srr_work; 867 868 atomic_t tgt_global_resets_count; 869 870 struct list_head tgt_list_entry; 871 }; 872 873 struct qla_tgt_sess_op { 874 struct scsi_qla_host *vha; 875 struct atio_from_isp atio; 876 struct work_struct work; 877 }; 878 879 /* 880 * Equivilant to IT Nexus (Initiator-Target) 881 */ 882 struct qla_tgt_sess { 883 uint16_t loop_id; 884 port_id_t s_id; 885 886 unsigned int conf_compl_supported:1; 887 unsigned int deleted:1; 888 unsigned int local:1; 889 890 struct se_session *se_sess; 891 struct scsi_qla_host *vha; 892 struct qla_tgt *tgt; 893 894 struct list_head sess_list_entry; 895 unsigned long expires; 896 struct list_head del_list_entry; 897 898 uint8_t port_name[WWN_SIZE]; 899 struct work_struct free_work; 900 }; 901 902 struct qla_tgt_cmd { 903 struct se_cmd se_cmd; 904 struct qla_tgt_sess *sess; 905 int state; 906 struct work_struct free_work; 907 struct work_struct work; 908 /* Sense buffer that will be mapped into outgoing status */ 909 unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; 910 911 /* to save extra sess dereferences */ 912 unsigned int conf_compl_supported:1; 913 unsigned int sg_mapped:1; 914 unsigned int free_sg:1; 915 unsigned int aborted:1; /* Needed in case of SRR */ 916 unsigned int write_data_transferred:1; 917 unsigned int ctx_dsd_alloced:1; 918 unsigned int q_full:1; 919 unsigned int term_exchg:1; 920 unsigned int cmd_sent_to_fw:1; 921 unsigned int cmd_in_wq:1; 922 923 struct scatterlist *sg; /* cmd data buffer SG vector */ 924 int sg_cnt; /* SG segments count */ 925 int bufflen; /* cmd buffer length */ 926 int offset; 927 uint32_t tag; 928 uint32_t unpacked_lun; 929 enum dma_data_direction dma_data_direction; 930 uint32_t reset_count; 931 932 uint16_t loop_id; /* to save extra sess dereferences */ 933 struct qla_tgt *tgt; /* to save extra sess dereferences */ 934 struct scsi_qla_host *vha; 935 struct list_head cmd_list; 936 937 struct atio_from_isp atio; 938 /* t10dif */ 939 struct scatterlist *prot_sg; 940 uint32_t prot_sg_cnt; 941 uint32_t blk_sz; 942 struct crc_context *ctx; 943 944 uint64_t jiffies_at_alloc; 945 uint64_t jiffies_at_free; 946 /* BIT_0 - Atio Arrival / schedule to work 947 * BIT_1 - qlt_do_work 948 * BIT_2 - qlt_do work failed 949 * BIT_3 - xfer rdy/tcm_qla2xxx_write_pending 950 * BIT_4 - read respond/tcm_qla2xx_queue_data_in 951 * BIT_5 - status respond / tcm_qla2xx_queue_status 952 * BIT_6 - tcm request to abort/Term exchange. 953 * pre_xmit_response->qlt_send_term_exchange 954 * BIT_7 - SRR received (qlt_handle_srr->qlt_xmit_response) 955 * BIT_8 - SRR received (qlt_handle_srr->qlt_rdy_to_xfer) 956 * BIT_9 - SRR received (qla_handle_srr->qlt_send_term_exchange) 957 * BIT_10 - Data in - hanlde_data->tcm_qla2xxx_handle_data 958 * BIT_11 - Data actually going to TCM : tcm_qla2xx_handle_data_work 959 * BIT_12 - good completion - qlt_ctio_do_completion -->free_cmd 960 * BIT_13 - Bad completion - 961 * qlt_ctio_do_completion --> qlt_term_ctio_exchange 962 * BIT_14 - Back end data received/sent. 963 * BIT_15 - SRR prepare ctio 964 * BIT_16 - complete free 965 */ 966 uint32_t cmd_flags; 967 }; 968 969 struct qla_tgt_sess_work_param { 970 struct list_head sess_works_list_entry; 971 972 #define QLA_TGT_SESS_WORK_ABORT 1 973 #define QLA_TGT_SESS_WORK_TM 2 974 int type; 975 976 union { 977 struct abts_recv_from_24xx abts; 978 struct imm_ntfy_from_isp tm_iocb; 979 struct atio_from_isp tm_iocb2; 980 }; 981 }; 982 983 struct qla_tgt_mgmt_cmd { 984 uint8_t tmr_func; 985 uint8_t fc_tm_rsp; 986 struct qla_tgt_sess *sess; 987 struct se_cmd se_cmd; 988 struct work_struct free_work; 989 unsigned int flags; 990 uint32_t reset_count; 991 #define QLA24XX_MGMT_SEND_NACK 1 992 union { 993 struct atio_from_isp atio; 994 struct imm_ntfy_from_isp imm_ntfy; 995 struct abts_recv_from_24xx abts; 996 } __packed orig_iocb; 997 }; 998 999 struct qla_tgt_prm { 1000 struct qla_tgt_cmd *cmd; 1001 struct qla_tgt *tgt; 1002 void *pkt; 1003 struct scatterlist *sg; /* cmd data buffer SG vector */ 1004 unsigned char *sense_buffer; 1005 int seg_cnt; 1006 int req_cnt; 1007 uint16_t rq_result; 1008 uint16_t scsi_status; 1009 int sense_buffer_len; 1010 int residual; 1011 int add_status_pkt; 1012 /* dif */ 1013 struct scatterlist *prot_sg; 1014 uint16_t prot_seg_cnt; 1015 uint16_t tot_dsds; 1016 }; 1017 1018 struct qla_tgt_srr_imm { 1019 struct list_head srr_list_entry; 1020 int srr_id; 1021 struct imm_ntfy_from_isp imm_ntfy; 1022 }; 1023 1024 struct qla_tgt_srr_ctio { 1025 struct list_head srr_list_entry; 1026 int srr_id; 1027 struct qla_tgt_cmd *cmd; 1028 }; 1029 1030 #define QLA_TGT_XMIT_DATA 1 1031 #define QLA_TGT_XMIT_STATUS 2 1032 #define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA) 1033 1034 1035 extern struct qla_tgt_data qla_target; 1036 1037 /* 1038 * Function prototypes for qla_target.c logic used by qla2xxx LLD code. 1039 */ 1040 extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *); 1041 extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *); 1042 extern int qlt_lport_register(void *, u64, u64, u64, 1043 int (*callback)(struct scsi_qla_host *, void *, u64, u64)); 1044 extern void qlt_lport_deregister(struct scsi_qla_host *); 1045 extern void qlt_unreg_sess(struct qla_tgt_sess *); 1046 extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *); 1047 extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *); 1048 extern int __init qlt_init(void); 1049 extern void qlt_exit(void); 1050 extern void qlt_update_vp_map(struct scsi_qla_host *, int); 1051 1052 /* 1053 * This macro is used during early initializations when host->active_mode 1054 * is not set. Right now, ha value is ignored. 1055 */ 1056 #define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED) 1057 extern int ql2x_ini_mode; 1058 1059 static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha) 1060 { 1061 return ha->host->active_mode & MODE_TARGET; 1062 } 1063 1064 static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha) 1065 { 1066 return ha->host->active_mode & MODE_INITIATOR; 1067 } 1068 1069 static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha) 1070 { 1071 if (ha->host->active_mode & MODE_INITIATOR) 1072 ha->host->active_mode &= ~MODE_INITIATOR; 1073 else 1074 ha->host->active_mode |= MODE_INITIATOR; 1075 } 1076 1077 /* 1078 * Exported symbols from qla_target.c LLD logic used by qla2xxx code.. 1079 */ 1080 extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *); 1081 extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *); 1082 extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t); 1083 extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *); 1084 extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *); 1085 extern void qlt_free_cmd(struct qla_tgt_cmd *cmd); 1086 extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *); 1087 extern void qlt_enable_vha(struct scsi_qla_host *); 1088 extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *); 1089 extern void qlt_rff_id(struct scsi_qla_host *, struct ct_sns_req *); 1090 extern void qlt_init_atio_q_entries(struct scsi_qla_host *); 1091 extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *); 1092 extern void qlt_24xx_config_rings(struct scsi_qla_host *); 1093 extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *, 1094 struct nvram_24xx *); 1095 extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *, 1096 struct init_cb_24xx *); 1097 extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *, 1098 struct init_cb_81xx *); 1099 extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *, 1100 struct nvram_81xx *); 1101 extern int qlt_24xx_process_response_error(struct scsi_qla_host *, 1102 struct sts_entry_24xx *); 1103 extern void qlt_modify_vp_config(struct scsi_qla_host *, 1104 struct vp_config_entry_24xx *); 1105 extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *); 1106 extern int qlt_mem_alloc(struct qla_hw_data *); 1107 extern void qlt_mem_free(struct qla_hw_data *); 1108 extern int qlt_stop_phase1(struct qla_tgt *); 1109 extern void qlt_stop_phase2(struct qla_tgt *); 1110 extern irqreturn_t qla83xx_msix_atio_q(int, void *); 1111 extern void qlt_83xx_iospace_config(struct qla_hw_data *); 1112 extern int qlt_free_qfull_cmds(struct scsi_qla_host *); 1113 1114 #endif /* __QLA_TARGET_H */ 1115