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 <= MAX_OUTSTANDING_COMMANDS) 64 #error "CTIO_COMPLETION_HANDLE_MARK not larger than MAX_OUTSTANDING_COMMANDS" 65 #endif 66 #define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK) 67 68 /* Used to mark CTIO as intermediate */ 69 #define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30 70 71 #ifndef OF_SS_MODE_0 72 /* 73 * ISP target entries - Flags bit definitions. 74 */ 75 #define OF_SS_MODE_0 0 76 #define OF_SS_MODE_1 1 77 #define OF_SS_MODE_2 2 78 #define OF_SS_MODE_3 3 79 80 #define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */ 81 #define OF_DATA_IN BIT_6 /* Data in to initiator */ 82 /* (data from target to initiator) */ 83 #define OF_DATA_OUT BIT_7 /* Data out from initiator */ 84 /* (data from initiator to target) */ 85 #define OF_NO_DATA (BIT_7 | BIT_6) 86 #define OF_INC_RC BIT_8 /* Increment command resource count */ 87 #define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */ 88 #define OF_CONF_REQ BIT_13 /* Confirmation Requested */ 89 #define OF_TERM_EXCH BIT_14 /* Terminate exchange */ 90 #define OF_SSTS BIT_15 /* Send SCSI status */ 91 #endif 92 93 #ifndef QLA_TGT_DATASEGS_PER_CMD32 94 #define QLA_TGT_DATASEGS_PER_CMD32 3 95 #define QLA_TGT_DATASEGS_PER_CONT32 7 96 #define QLA_TGT_MAX_SG32(ql) \ 97 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \ 98 QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0) 99 100 #define QLA_TGT_DATASEGS_PER_CMD64 2 101 #define QLA_TGT_DATASEGS_PER_CONT64 5 102 #define QLA_TGT_MAX_SG64(ql) \ 103 (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \ 104 QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0) 105 #endif 106 107 #ifndef QLA_TGT_DATASEGS_PER_CMD_24XX 108 #define QLA_TGT_DATASEGS_PER_CMD_24XX 1 109 #define QLA_TGT_DATASEGS_PER_CONT_24XX 5 110 #define QLA_TGT_MAX_SG_24XX(ql) \ 111 (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \ 112 QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0)) 113 #endif 114 #endif 115 116 #define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \ 117 ? le16_to_cpu((iocb)->u.isp2x.target.extended) \ 118 : (uint16_t)(iocb)->u.isp2x.target.id.standard) 119 120 #ifndef IMMED_NOTIFY_TYPE 121 #define IMMED_NOTIFY_TYPE 0x0D /* Immediate notify entry. */ 122 /* 123 * ISP queue - immediate notify entry structure definition. 124 * This is sent by the ISP to the Target driver. 125 * This IOCB would have report of events sent by the 126 * initiator, that needs to be handled by the target 127 * driver immediately. 128 */ 129 struct imm_ntfy_from_isp { 130 uint8_t entry_type; /* Entry type. */ 131 uint8_t entry_count; /* Entry count. */ 132 uint8_t sys_define; /* System defined. */ 133 uint8_t entry_status; /* Entry Status. */ 134 union { 135 struct { 136 uint32_t sys_define_2; /* System defined. */ 137 target_id_t target; 138 uint16_t lun; 139 uint8_t target_id; 140 uint8_t reserved_1; 141 uint16_t status_modifier; 142 uint16_t status; 143 uint16_t task_flags; 144 uint16_t seq_id; 145 uint16_t srr_rx_id; 146 uint32_t srr_rel_offs; 147 uint16_t srr_ui; 148 #define SRR_IU_DATA_IN 0x1 149 #define SRR_IU_DATA_OUT 0x5 150 #define SRR_IU_STATUS 0x7 151 uint16_t srr_ox_id; 152 uint8_t reserved_2[28]; 153 } isp2x; 154 struct { 155 uint32_t reserved; 156 uint16_t nport_handle; 157 uint16_t reserved_2; 158 uint16_t flags; 159 #define NOTIFY24XX_FLAGS_GLOBAL_TPRLO BIT_1 160 #define NOTIFY24XX_FLAGS_PUREX_IOCB BIT_0 161 uint16_t srr_rx_id; 162 uint16_t status; 163 uint8_t status_subcode; 164 uint8_t reserved_3; 165 uint32_t exchange_address; 166 uint32_t srr_rel_offs; 167 uint16_t srr_ui; 168 uint16_t srr_ox_id; 169 uint8_t reserved_4[19]; 170 uint8_t vp_index; 171 uint32_t reserved_5; 172 uint8_t port_id[3]; 173 uint8_t reserved_6; 174 } isp24; 175 } u; 176 uint16_t reserved_7; 177 uint16_t ox_id; 178 } __packed; 179 #endif 180 181 #ifndef NOTIFY_ACK_TYPE 182 #define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */ 183 /* 184 * ISP queue - notify acknowledge entry structure definition. 185 * This is sent to the ISP from the target driver. 186 */ 187 struct nack_to_isp { 188 uint8_t entry_type; /* Entry type. */ 189 uint8_t entry_count; /* Entry count. */ 190 uint8_t sys_define; /* System defined. */ 191 uint8_t entry_status; /* Entry Status. */ 192 union { 193 struct { 194 uint32_t sys_define_2; /* System defined. */ 195 target_id_t target; 196 uint8_t target_id; 197 uint8_t reserved_1; 198 uint16_t flags; 199 uint16_t resp_code; 200 uint16_t status; 201 uint16_t task_flags; 202 uint16_t seq_id; 203 uint16_t srr_rx_id; 204 uint32_t srr_rel_offs; 205 uint16_t srr_ui; 206 uint16_t srr_flags; 207 uint16_t srr_reject_code; 208 uint8_t srr_reject_vendor_uniq; 209 uint8_t srr_reject_code_expl; 210 uint8_t reserved_2[24]; 211 } isp2x; 212 struct { 213 uint32_t handle; 214 uint16_t nport_handle; 215 uint16_t reserved_1; 216 uint16_t flags; 217 uint16_t srr_rx_id; 218 uint16_t status; 219 uint8_t status_subcode; 220 uint8_t reserved_3; 221 uint32_t exchange_address; 222 uint32_t srr_rel_offs; 223 uint16_t srr_ui; 224 uint16_t srr_flags; 225 uint8_t reserved_4[19]; 226 uint8_t vp_index; 227 uint8_t srr_reject_vendor_uniq; 228 uint8_t srr_reject_code_expl; 229 uint8_t srr_reject_code; 230 uint8_t reserved_5[5]; 231 } isp24; 232 } u; 233 uint8_t reserved[2]; 234 uint16_t ox_id; 235 } __packed; 236 #define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0 237 #define NOTIFY_ACK_SRR_FLAGS_REJECT 1 238 239 #define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9 240 241 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0 242 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a 243 244 #define NOTIFY_ACK_SUCCESS 0x01 245 #endif 246 247 #ifndef ACCEPT_TGT_IO_TYPE 248 #define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */ 249 #endif 250 251 #ifndef CONTINUE_TGT_IO_TYPE 252 #define CONTINUE_TGT_IO_TYPE 0x17 253 /* 254 * ISP queue - Continue Target I/O (CTIO) entry for status mode 0 structure. 255 * This structure is sent to the ISP 2xxx from target driver. 256 */ 257 struct ctio_to_2xxx { 258 uint8_t entry_type; /* Entry type. */ 259 uint8_t entry_count; /* Entry count. */ 260 uint8_t sys_define; /* System defined. */ 261 uint8_t entry_status; /* Entry Status. */ 262 uint32_t handle; /* System defined handle */ 263 target_id_t target; 264 uint16_t rx_id; 265 uint16_t flags; 266 uint16_t status; 267 uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */ 268 uint16_t dseg_count; /* Data segment count. */ 269 uint32_t relative_offset; 270 uint32_t residual; 271 uint16_t reserved_1[3]; 272 uint16_t scsi_status; 273 uint32_t transfer_length; 274 uint32_t dseg_0_address; /* Data segment 0 address. */ 275 uint32_t dseg_0_length; /* Data segment 0 length. */ 276 uint32_t dseg_1_address; /* Data segment 1 address. */ 277 uint32_t dseg_1_length; /* Data segment 1 length. */ 278 uint32_t dseg_2_address; /* Data segment 2 address. */ 279 uint32_t dseg_2_length; /* Data segment 2 length. */ 280 } __packed; 281 #define ATIO_PATH_INVALID 0x07 282 #define ATIO_CANT_PROV_CAP 0x16 283 #define ATIO_CDB_VALID 0x3D 284 285 #define ATIO_EXEC_READ BIT_1 286 #define ATIO_EXEC_WRITE BIT_0 287 #endif 288 289 #ifndef CTIO_A64_TYPE 290 #define CTIO_A64_TYPE 0x1F 291 #define CTIO_SUCCESS 0x01 292 #define CTIO_ABORTED 0x02 293 #define CTIO_INVALID_RX_ID 0x08 294 #define CTIO_TIMEOUT 0x0B 295 #define CTIO_LIP_RESET 0x0E 296 #define CTIO_TARGET_RESET 0x17 297 #define CTIO_PORT_UNAVAILABLE 0x28 298 #define CTIO_PORT_LOGGED_OUT 0x29 299 #define CTIO_PORT_CONF_CHANGED 0x2A 300 #define CTIO_SRR_RECEIVED 0x45 301 #endif 302 303 #ifndef CTIO_RET_TYPE 304 #define CTIO_RET_TYPE 0x17 /* CTIO return entry */ 305 #define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */ 306 307 struct fcp_hdr { 308 uint8_t r_ctl; 309 uint8_t d_id[3]; 310 uint8_t cs_ctl; 311 uint8_t s_id[3]; 312 uint8_t type; 313 uint8_t f_ctl[3]; 314 uint8_t seq_id; 315 uint8_t df_ctl; 316 uint16_t seq_cnt; 317 uint16_t ox_id; 318 uint16_t rx_id; 319 uint32_t parameter; 320 } __packed; 321 322 struct fcp_hdr_le { 323 uint8_t d_id[3]; 324 uint8_t r_ctl; 325 uint8_t s_id[3]; 326 uint8_t cs_ctl; 327 uint8_t f_ctl[3]; 328 uint8_t type; 329 uint16_t seq_cnt; 330 uint8_t df_ctl; 331 uint8_t seq_id; 332 uint16_t rx_id; 333 uint16_t ox_id; 334 uint32_t parameter; 335 } __packed; 336 337 #define F_CTL_EXCH_CONTEXT_RESP BIT_23 338 #define F_CTL_SEQ_CONTEXT_RESIP BIT_22 339 #define F_CTL_LAST_SEQ BIT_20 340 #define F_CTL_END_SEQ BIT_19 341 #define F_CTL_SEQ_INITIATIVE BIT_16 342 343 #define R_CTL_BASIC_LINK_SERV 0x80 344 #define R_CTL_B_ACC 0x4 345 #define R_CTL_B_RJT 0x5 346 347 struct atio7_fcp_cmnd { 348 uint64_t lun; 349 uint8_t cmnd_ref; 350 uint8_t task_attr:3; 351 uint8_t reserved:5; 352 uint8_t task_mgmt_flags; 353 #define FCP_CMND_TASK_MGMT_CLEAR_ACA 6 354 #define FCP_CMND_TASK_MGMT_TARGET_RESET 5 355 #define FCP_CMND_TASK_MGMT_LU_RESET 4 356 #define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2 357 #define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1 358 uint8_t wrdata:1; 359 uint8_t rddata:1; 360 uint8_t add_cdb_len:6; 361 uint8_t cdb[16]; 362 /* 363 * add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4 364 * only to make sizeof(struct atio7_fcp_cmnd) be as expected by 365 * BUILD_BUG_ON in qlt_init(). 366 */ 367 uint8_t add_cdb[4]; 368 /* uint32_t data_length; */ 369 } __packed; 370 371 /* 372 * ISP queue - Accept Target I/O (ATIO) type entry IOCB structure. 373 * This is sent from the ISP to the target driver. 374 */ 375 struct atio_from_isp { 376 union { 377 struct { 378 uint16_t entry_hdr; 379 uint8_t sys_define; /* System defined. */ 380 uint8_t entry_status; /* Entry Status. */ 381 uint32_t sys_define_2; /* System defined. */ 382 target_id_t target; 383 uint16_t rx_id; 384 uint16_t flags; 385 uint16_t status; 386 uint8_t command_ref; 387 uint8_t task_codes; 388 uint8_t task_flags; 389 uint8_t execution_codes; 390 uint8_t cdb[MAX_CMDSZ]; 391 uint32_t data_length; 392 uint16_t lun; 393 uint8_t initiator_port_name[WWN_SIZE]; /* on qla23xx */ 394 uint16_t reserved_32[6]; 395 uint16_t ox_id; 396 } isp2x; 397 struct { 398 uint16_t entry_hdr; 399 uint8_t fcp_cmnd_len_low; 400 uint8_t fcp_cmnd_len_high:4; 401 uint8_t attr:4; 402 uint32_t exchange_addr; 403 #define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF 404 struct fcp_hdr fcp_hdr; 405 struct atio7_fcp_cmnd fcp_cmnd; 406 } isp24; 407 struct { 408 uint8_t entry_type; /* Entry type. */ 409 uint8_t entry_count; /* Entry count. */ 410 uint8_t data[58]; 411 uint32_t signature; 412 #define ATIO_PROCESSED 0xDEADDEAD /* Signature */ 413 } raw; 414 } u; 415 } __packed; 416 417 #define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */ 418 419 /* 420 * ISP queue - Continue Target I/O (ATIO) type 7 entry (for 24xx) structure. 421 * This structure is sent to the ISP 24xx from the target driver. 422 */ 423 424 struct ctio7_to_24xx { 425 uint8_t entry_type; /* Entry type. */ 426 uint8_t entry_count; /* Entry count. */ 427 uint8_t sys_define; /* System defined. */ 428 uint8_t entry_status; /* Entry Status. */ 429 uint32_t handle; /* System defined handle */ 430 uint16_t nport_handle; 431 #define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF 432 uint16_t timeout; 433 uint16_t dseg_count; /* Data segment count. */ 434 uint8_t vp_index; 435 uint8_t add_flags; 436 uint8_t initiator_id[3]; 437 uint8_t reserved; 438 uint32_t exchange_addr; 439 union { 440 struct { 441 uint16_t reserved1; 442 uint16_t flags; 443 uint32_t residual; 444 uint16_t ox_id; 445 uint16_t scsi_status; 446 uint32_t relative_offset; 447 uint32_t reserved2; 448 uint32_t transfer_length; 449 uint32_t reserved3; 450 /* Data segment 0 address. */ 451 uint32_t dseg_0_address[2]; 452 /* Data segment 0 length. */ 453 uint32_t dseg_0_length; 454 } status0; 455 struct { 456 uint16_t sense_length; 457 uint16_t flags; 458 uint32_t residual; 459 uint16_t ox_id; 460 uint16_t scsi_status; 461 uint16_t response_len; 462 uint16_t reserved; 463 uint8_t sense_data[24]; 464 } status1; 465 } u; 466 } __packed; 467 468 /* 469 * ISP queue - CTIO type 7 from ISP 24xx to target driver 470 * returned entry structure. 471 */ 472 struct ctio7_from_24xx { 473 uint8_t entry_type; /* Entry type. */ 474 uint8_t entry_count; /* Entry count. */ 475 uint8_t sys_define; /* System defined. */ 476 uint8_t entry_status; /* Entry Status. */ 477 uint32_t handle; /* System defined handle */ 478 uint16_t status; 479 uint16_t timeout; 480 uint16_t dseg_count; /* Data segment count. */ 481 uint8_t vp_index; 482 uint8_t reserved1[5]; 483 uint32_t exchange_address; 484 uint16_t reserved2; 485 uint16_t flags; 486 uint32_t residual; 487 uint16_t ox_id; 488 uint16_t reserved3; 489 uint32_t relative_offset; 490 uint8_t reserved4[24]; 491 } __packed; 492 493 /* CTIO7 flags values */ 494 #define CTIO7_FLAGS_SEND_STATUS BIT_15 495 #define CTIO7_FLAGS_TERMINATE BIT_14 496 #define CTIO7_FLAGS_CONFORM_REQ BIT_13 497 #define CTIO7_FLAGS_DONT_RET_CTIO BIT_8 498 #define CTIO7_FLAGS_STATUS_MODE_0 0 499 #define CTIO7_FLAGS_STATUS_MODE_1 BIT_6 500 #define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5 501 #define CTIO7_FLAGS_CONFIRM_SATISF BIT_4 502 #define CTIO7_FLAGS_DSD_PTR BIT_2 503 #define CTIO7_FLAGS_DATA_IN BIT_1 504 #define CTIO7_FLAGS_DATA_OUT BIT_0 505 506 #define ELS_PLOGI 0x3 507 #define ELS_FLOGI 0x4 508 #define ELS_LOGO 0x5 509 #define ELS_PRLI 0x20 510 #define ELS_PRLO 0x21 511 #define ELS_TPRLO 0x24 512 #define ELS_PDISC 0x50 513 #define ELS_ADISC 0x52 514 515 /* 516 * ISP queue - ABTS received/response entries structure definition for 24xx. 517 */ 518 #define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */ 519 #define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */ 520 521 /* 522 * ISP queue - ABTS received IOCB entry structure definition for 24xx. 523 * The ABTS BLS received from the wire is sent to the 524 * target driver by the ISP 24xx. 525 * The IOCB is placed on the response queue. 526 */ 527 struct abts_recv_from_24xx { 528 uint8_t entry_type; /* Entry type. */ 529 uint8_t entry_count; /* Entry count. */ 530 uint8_t sys_define; /* System defined. */ 531 uint8_t entry_status; /* Entry Status. */ 532 uint8_t reserved_1[6]; 533 uint16_t nport_handle; 534 uint8_t reserved_2[2]; 535 uint8_t vp_index; 536 uint8_t reserved_3:4; 537 uint8_t sof_type:4; 538 uint32_t exchange_address; 539 struct fcp_hdr_le fcp_hdr_le; 540 uint8_t reserved_4[16]; 541 uint32_t exchange_addr_to_abort; 542 } __packed; 543 544 #define ABTS_PARAM_ABORT_SEQ BIT_0 545 546 struct ba_acc_le { 547 uint16_t reserved; 548 uint8_t seq_id_last; 549 uint8_t seq_id_valid; 550 #define SEQ_ID_VALID 0x80 551 #define SEQ_ID_INVALID 0x00 552 uint16_t rx_id; 553 uint16_t ox_id; 554 uint16_t high_seq_cnt; 555 uint16_t low_seq_cnt; 556 } __packed; 557 558 struct ba_rjt_le { 559 uint8_t vendor_uniq; 560 uint8_t reason_expl; 561 uint8_t reason_code; 562 #define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1 563 #define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9 564 uint8_t reserved; 565 } __packed; 566 567 /* 568 * ISP queue - ABTS Response IOCB entry structure definition for 24xx. 569 * The ABTS response to the ABTS received is sent by the 570 * target driver to the ISP 24xx. 571 * The IOCB is placed on the request queue. 572 */ 573 struct abts_resp_to_24xx { 574 uint8_t entry_type; /* Entry type. */ 575 uint8_t entry_count; /* Entry count. */ 576 uint8_t sys_define; /* System defined. */ 577 uint8_t entry_status; /* Entry Status. */ 578 uint32_t handle; 579 uint16_t reserved_1; 580 uint16_t nport_handle; 581 uint16_t control_flags; 582 #define ABTS_CONTR_FLG_TERM_EXCHG BIT_0 583 uint8_t vp_index; 584 uint8_t reserved_3:4; 585 uint8_t sof_type:4; 586 uint32_t exchange_address; 587 struct fcp_hdr_le fcp_hdr_le; 588 union { 589 struct ba_acc_le ba_acct; 590 struct ba_rjt_le ba_rjt; 591 } __packed payload; 592 uint32_t reserved_4; 593 uint32_t exchange_addr_to_abort; 594 } __packed; 595 596 /* 597 * ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure. 598 * The ABTS response with completion status to the ABTS response 599 * (sent by the target driver to the ISP 24xx) is sent by the 600 * ISP24xx firmware to the target driver. 601 * The IOCB is placed on the response queue. 602 */ 603 struct abts_resp_from_24xx_fw { 604 uint8_t entry_type; /* Entry type. */ 605 uint8_t entry_count; /* Entry count. */ 606 uint8_t sys_define; /* System defined. */ 607 uint8_t entry_status; /* Entry Status. */ 608 uint32_t handle; 609 uint16_t compl_status; 610 #define ABTS_RESP_COMPL_SUCCESS 0 611 #define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31 612 uint16_t nport_handle; 613 uint16_t reserved_1; 614 uint8_t reserved_2; 615 uint8_t reserved_3:4; 616 uint8_t sof_type:4; 617 uint32_t exchange_address; 618 struct fcp_hdr_le fcp_hdr_le; 619 uint8_t reserved_4[8]; 620 uint32_t error_subcode1; 621 #define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E 622 uint32_t error_subcode2; 623 uint32_t exchange_addr_to_abort; 624 } __packed; 625 626 /********************************************************************\ 627 * Type Definitions used by initiator & target halves 628 \********************************************************************/ 629 630 struct qla_tgt_mgmt_cmd; 631 struct qla_tgt_sess; 632 633 /* 634 * This structure provides a template of function calls that the 635 * target driver (from within qla_target.c) can issue to the 636 * target module (tcm_qla2xxx). 637 */ 638 struct qla_tgt_func_tmpl { 639 640 int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *, 641 unsigned char *, uint32_t, int, int, int); 642 void (*handle_data)(struct qla_tgt_cmd *); 643 int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t, 644 uint32_t); 645 void (*free_cmd)(struct qla_tgt_cmd *); 646 void (*free_mcmd)(struct qla_tgt_mgmt_cmd *); 647 void (*free_session)(struct qla_tgt_sess *); 648 649 int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *, 650 void *, uint8_t *, uint16_t); 651 void (*update_sess)(struct qla_tgt_sess *, port_id_t, uint16_t, bool); 652 struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *, 653 const uint16_t); 654 struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *, 655 const uint8_t *); 656 void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *); 657 void (*put_sess)(struct qla_tgt_sess *); 658 void (*shutdown_sess)(struct qla_tgt_sess *); 659 }; 660 661 int qla2x00_wait_for_hba_online(struct scsi_qla_host *); 662 663 #include <target/target_core_base.h> 664 665 #define QLA_TGT_TIMEOUT 10 /* in seconds */ 666 667 #define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */ 668 669 /* Immediate notify status constants */ 670 #define IMM_NTFY_LIP_RESET 0x000E 671 #define IMM_NTFY_LIP_LINK_REINIT 0x000F 672 #define IMM_NTFY_IOCB_OVERFLOW 0x0016 673 #define IMM_NTFY_ABORT_TASK 0x0020 674 #define IMM_NTFY_PORT_LOGOUT 0x0029 675 #define IMM_NTFY_PORT_CONFIG 0x002A 676 #define IMM_NTFY_GLBL_TPRLO 0x002D 677 #define IMM_NTFY_GLBL_LOGO 0x002E 678 #define IMM_NTFY_RESOURCE 0x0034 679 #define IMM_NTFY_MSG_RX 0x0036 680 #define IMM_NTFY_SRR 0x0045 681 #define IMM_NTFY_ELS 0x0046 682 683 /* Immediate notify task flags */ 684 #define IMM_NTFY_TASK_MGMT_SHIFT 8 685 686 #define QLA_TGT_CLEAR_ACA 0x40 687 #define QLA_TGT_TARGET_RESET 0x20 688 #define QLA_TGT_LUN_RESET 0x10 689 #define QLA_TGT_CLEAR_TS 0x04 690 #define QLA_TGT_ABORT_TS 0x02 691 #define QLA_TGT_ABORT_ALL_SESS 0xFFFF 692 #define QLA_TGT_ABORT_ALL 0xFFFE 693 #define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD 694 #define QLA_TGT_NEXUS_LOSS 0xFFFC 695 696 /* Notify Acknowledge flags */ 697 #define NOTIFY_ACK_RES_COUNT BIT_8 698 #define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5 699 #define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4 700 701 /* Command's states */ 702 #define QLA_TGT_STATE_NEW 0 /* New command + target processing */ 703 #define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */ 704 #define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */ 705 #define QLA_TGT_STATE_PROCESSED 3 /* target done processing */ 706 #define QLA_TGT_STATE_ABORTED 4 /* Command aborted */ 707 708 /* Special handles */ 709 #define QLA_TGT_NULL_HANDLE 0 710 #define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK) 711 712 /* ATIO task_codes field */ 713 #define ATIO_SIMPLE_QUEUE 0 714 #define ATIO_HEAD_OF_QUEUE 1 715 #define ATIO_ORDERED_QUEUE 2 716 #define ATIO_ACA_QUEUE 4 717 #define ATIO_UNTAGGED 5 718 719 /* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */ 720 #define FC_TM_SUCCESS 0 721 #define FC_TM_BAD_FCP_DATA 1 722 #define FC_TM_BAD_CMD 2 723 #define FC_TM_FCP_DATA_MISMATCH 3 724 #define FC_TM_REJECT 4 725 #define FC_TM_FAILED 5 726 727 /* 728 * Error code of qlt_pre_xmit_response() meaning that cmd's exchange was 729 * terminated, so no more actions is needed and success should be returned 730 * to target. 731 */ 732 #define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED 0x1717 733 734 #if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G) 735 #define pci_dma_lo32(a) (a & 0xffffffff) 736 #define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff) 737 #else 738 #define pci_dma_lo32(a) (a & 0xffffffff) 739 #define pci_dma_hi32(a) 0 740 #endif 741 742 #define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \ 743 (((const uint8_t *)(sense))[0] & 0x70) == 0x70) 744 745 struct qla_port_24xx_data { 746 uint8_t port_name[WWN_SIZE]; 747 uint16_t loop_id; 748 uint16_t reserved; 749 }; 750 751 struct qla_tgt { 752 struct scsi_qla_host *vha; 753 struct qla_hw_data *ha; 754 755 /* 756 * To sync between IRQ handlers and qlt_target_release(). Needed, 757 * because req_pkt() can drop/reaquire HW lock inside. Protected by 758 * HW lock. 759 */ 760 int irq_cmd_count; 761 762 int datasegs_per_cmd, datasegs_per_cont, sg_tablesize; 763 764 /* Target's flags, serialized by pha->hardware_lock */ 765 unsigned int tgt_enable_64bit_addr:1; /* 64-bits PCI addr enabled */ 766 unsigned int link_reinit_iocb_pending:1; 767 768 /* 769 * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex 770 * OR hardware_lock for reading. 771 */ 772 int tgt_stop; /* the target mode driver is being stopped */ 773 int tgt_stopped; /* the target mode driver has been stopped */ 774 775 /* Count of sessions refering qla_tgt. Protected by hardware_lock. */ 776 int sess_count; 777 778 /* Protected by hardware_lock. Addition also protected by tgt_mutex. */ 779 struct list_head sess_list; 780 781 /* Protected by hardware_lock */ 782 struct list_head del_sess_list; 783 struct delayed_work sess_del_work; 784 785 spinlock_t sess_work_lock; 786 struct list_head sess_works_list; 787 struct work_struct sess_work; 788 789 struct imm_ntfy_from_isp link_reinit_iocb; 790 wait_queue_head_t waitQ; 791 int notify_ack_expected; 792 int abts_resp_expected; 793 int modify_lun_expected; 794 795 int ctio_srr_id; 796 int imm_srr_id; 797 spinlock_t srr_lock; 798 struct list_head srr_ctio_list; 799 struct list_head srr_imm_list; 800 struct work_struct srr_work; 801 802 atomic_t tgt_global_resets_count; 803 804 struct list_head tgt_list_entry; 805 }; 806 807 /* 808 * Equivilant to IT Nexus (Initiator-Target) 809 */ 810 struct qla_tgt_sess { 811 uint16_t loop_id; 812 port_id_t s_id; 813 814 unsigned int conf_compl_supported:1; 815 unsigned int deleted:1; 816 unsigned int local:1; 817 818 struct se_session *se_sess; 819 struct scsi_qla_host *vha; 820 struct qla_tgt *tgt; 821 822 struct list_head sess_list_entry; 823 unsigned long expires; 824 struct list_head del_list_entry; 825 826 uint8_t port_name[WWN_SIZE]; 827 struct work_struct free_work; 828 }; 829 830 struct qla_tgt_cmd { 831 struct qla_tgt_sess *sess; 832 int state; 833 struct se_cmd se_cmd; 834 struct work_struct free_work; 835 struct work_struct work; 836 /* Sense buffer that will be mapped into outgoing status */ 837 unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; 838 839 /* to save extra sess dereferences */ 840 unsigned int conf_compl_supported:1; 841 unsigned int sg_mapped:1; 842 unsigned int free_sg:1; 843 unsigned int aborted:1; /* Needed in case of SRR */ 844 unsigned int write_data_transferred:1; 845 846 struct scatterlist *sg; /* cmd data buffer SG vector */ 847 int sg_cnt; /* SG segments count */ 848 int bufflen; /* cmd buffer length */ 849 int offset; 850 uint32_t tag; 851 uint32_t unpacked_lun; 852 enum dma_data_direction dma_data_direction; 853 854 uint16_t loop_id; /* to save extra sess dereferences */ 855 struct qla_tgt *tgt; /* to save extra sess dereferences */ 856 struct scsi_qla_host *vha; 857 struct list_head cmd_list; 858 859 struct atio_from_isp atio; 860 }; 861 862 struct qla_tgt_sess_work_param { 863 struct list_head sess_works_list_entry; 864 865 #define QLA_TGT_SESS_WORK_ABORT 1 866 #define QLA_TGT_SESS_WORK_TM 2 867 int type; 868 869 union { 870 struct abts_recv_from_24xx abts; 871 struct imm_ntfy_from_isp tm_iocb; 872 struct atio_from_isp tm_iocb2; 873 }; 874 }; 875 876 struct qla_tgt_mgmt_cmd { 877 uint8_t tmr_func; 878 uint8_t fc_tm_rsp; 879 struct qla_tgt_sess *sess; 880 struct se_cmd se_cmd; 881 struct work_struct free_work; 882 unsigned int flags; 883 #define QLA24XX_MGMT_SEND_NACK 1 884 union { 885 struct atio_from_isp atio; 886 struct imm_ntfy_from_isp imm_ntfy; 887 struct abts_recv_from_24xx abts; 888 } __packed orig_iocb; 889 }; 890 891 struct qla_tgt_prm { 892 struct qla_tgt_cmd *cmd; 893 struct qla_tgt *tgt; 894 void *pkt; 895 struct scatterlist *sg; /* cmd data buffer SG vector */ 896 int seg_cnt; 897 int req_cnt; 898 uint16_t rq_result; 899 uint16_t scsi_status; 900 unsigned char *sense_buffer; 901 int sense_buffer_len; 902 int residual; 903 int add_status_pkt; 904 }; 905 906 struct qla_tgt_srr_imm { 907 struct list_head srr_list_entry; 908 int srr_id; 909 struct imm_ntfy_from_isp imm_ntfy; 910 }; 911 912 struct qla_tgt_srr_ctio { 913 struct list_head srr_list_entry; 914 int srr_id; 915 struct qla_tgt_cmd *cmd; 916 }; 917 918 #define QLA_TGT_XMIT_DATA 1 919 #define QLA_TGT_XMIT_STATUS 2 920 #define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA) 921 922 923 extern struct qla_tgt_data qla_target; 924 /* 925 * Internal function prototypes 926 */ 927 void qlt_disable_vha(struct scsi_qla_host *); 928 929 /* 930 * Function prototypes for qla_target.c logic used by qla2xxx LLD code. 931 */ 932 extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *); 933 extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *); 934 extern int qlt_lport_register(struct qla_tgt_func_tmpl *, u64, 935 int (*callback)(struct scsi_qla_host *), void *); 936 extern void qlt_lport_deregister(struct scsi_qla_host *); 937 extern void qlt_unreg_sess(struct qla_tgt_sess *); 938 extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *); 939 extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *); 940 extern void qlt_set_mode(struct scsi_qla_host *ha); 941 extern void qlt_clear_mode(struct scsi_qla_host *ha); 942 extern int __init qlt_init(void); 943 extern void qlt_exit(void); 944 extern void qlt_update_vp_map(struct scsi_qla_host *, int); 945 946 /* 947 * This macro is used during early initializations when host->active_mode 948 * is not set. Right now, ha value is ignored. 949 */ 950 #define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED) 951 952 static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha) 953 { 954 return ha->host->active_mode & MODE_TARGET; 955 } 956 957 static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha) 958 { 959 return ha->host->active_mode & MODE_INITIATOR; 960 } 961 962 static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha) 963 { 964 if (ha->host->active_mode & MODE_INITIATOR) 965 ha->host->active_mode &= ~MODE_INITIATOR; 966 else 967 ha->host->active_mode |= MODE_INITIATOR; 968 } 969 970 /* 971 * Exported symbols from qla_target.c LLD logic used by qla2xxx code.. 972 */ 973 extern void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *, 974 struct atio_from_isp *); 975 extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *); 976 extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *); 977 extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t); 978 extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *); 979 extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *); 980 extern void qlt_free_cmd(struct qla_tgt_cmd *cmd); 981 extern void qlt_ctio_completion(struct scsi_qla_host *, uint32_t); 982 extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *); 983 extern void qlt_enable_vha(struct scsi_qla_host *); 984 extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *); 985 extern void qlt_rff_id(struct scsi_qla_host *, struct ct_sns_req *); 986 extern void qlt_init_atio_q_entries(struct scsi_qla_host *); 987 extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *); 988 extern void qlt_24xx_config_rings(struct scsi_qla_host *, 989 device_reg_t __iomem *); 990 extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *, 991 struct nvram_24xx *); 992 extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *, 993 struct init_cb_24xx *); 994 extern int qlt_24xx_process_response_error(struct scsi_qla_host *, 995 struct sts_entry_24xx *); 996 extern void qlt_modify_vp_config(struct scsi_qla_host *, 997 struct vp_config_entry_24xx *); 998 extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *); 999 extern int qlt_mem_alloc(struct qla_hw_data *); 1000 extern void qlt_mem_free(struct qla_hw_data *); 1001 extern void qlt_stop_phase1(struct qla_tgt *); 1002 extern void qlt_stop_phase2(struct qla_tgt *); 1003 1004 #endif /* __QLA_TARGET_H */ 1005