1 /* 2 * 3 * linux/drivers/s390/scsi/zfcp_def.h 4 * 5 * FCP adapter driver for IBM eServer zSeries 6 * 7 * (C) Copyright IBM Corp. 2002, 2004 8 * 9 * Author(s): Martin Peschke <mpeschke@de.ibm.com> 10 * Raimund Schroeder <raimund.schroeder@de.ibm.com> 11 * Aron Zeh 12 * Wolfgang Taphorn 13 * Stefan Bader <stefan.bader@de.ibm.com> 14 * Heiko Carstens <heiko.carstens@de.ibm.com> 15 * Andreas Herrmann <aherrman@de.ibm.com> 16 * Volker Sameske <sameske@de.ibm.com> 17 * 18 * This program is free software; you can redistribute it and/or modify 19 * it under the terms of the GNU General Public License as published by 20 * the Free Software Foundation; either version 2, or (at your option) 21 * any later version. 22 * 23 * This program is distributed in the hope that it will be useful, 24 * but WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 26 * GNU General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 31 */ 32 33 34 #ifndef ZFCP_DEF_H 35 #define ZFCP_DEF_H 36 37 /*************************** INCLUDES *****************************************/ 38 39 #include <linux/init.h> 40 #include <linux/moduleparam.h> 41 #include <linux/miscdevice.h> 42 #include <linux/major.h> 43 #include <linux/blkdev.h> 44 #include <linux/delay.h> 45 #include <linux/timer.h> 46 #include <scsi/scsi.h> 47 #include <scsi/scsi_tcq.h> 48 #include <scsi/scsi_cmnd.h> 49 #include <scsi/scsi_device.h> 50 #include <scsi/scsi_host.h> 51 #include <scsi/scsi_transport.h> 52 #include <scsi/scsi_transport_fc.h> 53 #include "../../fc4/fc.h" 54 #include "zfcp_fsf.h" 55 #include <asm/ccwdev.h> 56 #include <asm/qdio.h> 57 #include <asm/debug.h> 58 #include <asm/ebcdic.h> 59 #include <linux/mempool.h> 60 #include <linux/syscalls.h> 61 #include <linux/ioctl.h> 62 63 64 /********************* GENERAL DEFINES *********************************/ 65 66 /* zfcp version number, it consists of major, minor, and patch-level number */ 67 #define ZFCP_VERSION "4.5.0" 68 69 /** 70 * zfcp_sg_to_address - determine kernel address from struct scatterlist 71 * @list: struct scatterlist 72 * Return: kernel address 73 */ 74 static inline void * 75 zfcp_sg_to_address(struct scatterlist *list) 76 { 77 return (void *) (page_address(list->page) + list->offset); 78 } 79 80 /** 81 * zfcp_address_to_sg - set up struct scatterlist from kernel address 82 * @address: kernel address 83 * @list: struct scatterlist 84 */ 85 static inline void 86 zfcp_address_to_sg(void *address, struct scatterlist *list) 87 { 88 list->page = virt_to_page(address); 89 list->offset = ((unsigned long) address) & (PAGE_SIZE - 1); 90 } 91 92 /********************* SCSI SPECIFIC DEFINES *********************************/ 93 94 /* 32 bit for SCSI ID and LUN as long as the SCSI stack uses this type */ 95 typedef u32 scsi_id_t; 96 typedef u32 scsi_lun_t; 97 98 #define ZFCP_ERP_SCSI_LOW_MEM_TIMEOUT (100*HZ) 99 #define ZFCP_SCSI_ER_TIMEOUT (100*HZ) 100 101 /********************* CIO/QDIO SPECIFIC DEFINES *****************************/ 102 103 /* Adapter Identification Parameters */ 104 #define ZFCP_CONTROL_UNIT_TYPE 0x1731 105 #define ZFCP_CONTROL_UNIT_MODEL 0x03 106 #define ZFCP_DEVICE_TYPE 0x1732 107 #define ZFCP_DEVICE_MODEL 0x03 108 #define ZFCP_DEVICE_MODEL_PRIV 0x04 109 110 /* allow as many chained SBALs as are supported by hardware */ 111 #define ZFCP_MAX_SBALS_PER_REQ FSF_MAX_SBALS_PER_REQ 112 #define ZFCP_MAX_SBALS_PER_CT_REQ FSF_MAX_SBALS_PER_REQ 113 #define ZFCP_MAX_SBALS_PER_ELS_REQ FSF_MAX_SBALS_PER_ELS_REQ 114 115 /* DMQ bug workaround: don't use last SBALE */ 116 #define ZFCP_MAX_SBALES_PER_SBAL (QDIO_MAX_ELEMENTS_PER_BUFFER - 1) 117 118 /* index of last SBALE (with respect to DMQ bug workaround) */ 119 #define ZFCP_LAST_SBALE_PER_SBAL (ZFCP_MAX_SBALES_PER_SBAL - 1) 120 121 /* max. number of (data buffer) SBALEs in largest SBAL chain */ 122 #define ZFCP_MAX_SBALES_PER_REQ \ 123 (ZFCP_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2) 124 /* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */ 125 126 /* FIXME(tune): free space should be one max. SBAL chain plus what? */ 127 #define ZFCP_QDIO_PCI_INTERVAL (QDIO_MAX_BUFFERS_PER_Q \ 128 - (ZFCP_MAX_SBALS_PER_REQ + 4)) 129 130 #define ZFCP_SBAL_TIMEOUT (5*HZ) 131 132 #define ZFCP_TYPE2_RECOVERY_TIME (8*HZ) 133 134 /* queue polling (values in microseconds) */ 135 #define ZFCP_MAX_INPUT_THRESHOLD 5000 /* FIXME: tune */ 136 #define ZFCP_MAX_OUTPUT_THRESHOLD 1000 /* FIXME: tune */ 137 #define ZFCP_MIN_INPUT_THRESHOLD 1 /* ignored by QDIO layer */ 138 #define ZFCP_MIN_OUTPUT_THRESHOLD 1 /* ignored by QDIO layer */ 139 140 #define QDIO_SCSI_QFMT 1 /* 1 for FSF */ 141 142 /********************* FSF SPECIFIC DEFINES *********************************/ 143 144 #define ZFCP_ULP_INFO_VERSION 26 145 #define ZFCP_QTCB_VERSION FSF_QTCB_CURRENT_VERSION 146 /* ATTENTION: value must not be used by hardware */ 147 #define FSF_QTCB_UNSOLICITED_STATUS 0x6305 148 #define ZFCP_STATUS_READ_FAILED_THRESHOLD 3 149 #define ZFCP_STATUS_READS_RECOM FSF_STATUS_READS_RECOM 150 151 /* Do 1st retry in 1 second, then double the timeout for each following retry */ 152 #define ZFCP_EXCHANGE_CONFIG_DATA_FIRST_SLEEP 100 153 #define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES 7 154 155 /* timeout value for "default timer" for fsf requests */ 156 #define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ); 157 158 /*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/ 159 160 typedef unsigned long long wwn_t; 161 typedef unsigned long long fcp_lun_t; 162 /* data length field may be at variable position in FCP-2 FCP_CMND IU */ 163 typedef unsigned int fcp_dl_t; 164 165 #define ZFCP_FC_SERVICE_CLASS_DEFAULT FSF_CLASS_3 166 167 /* timeout for name-server lookup (in seconds) */ 168 #define ZFCP_NS_GID_PN_TIMEOUT 10 169 170 /* largest SCSI command we can process */ 171 /* FCP-2 (FCP_CMND IU) allows up to (255-3+16) */ 172 #define ZFCP_MAX_SCSI_CMND_LENGTH 255 173 /* maximum number of commands in LUN queue (tagged queueing) */ 174 #define ZFCP_CMND_PER_LUN 32 175 176 /* task attribute values in FCP-2 FCP_CMND IU */ 177 #define SIMPLE_Q 0 178 #define HEAD_OF_Q 1 179 #define ORDERED_Q 2 180 #define ACA_Q 4 181 #define UNTAGGED 5 182 183 /* task management flags in FCP-2 FCP_CMND IU */ 184 #define FCP_CLEAR_ACA 0x40 185 #define FCP_TARGET_RESET 0x20 186 #define FCP_LOGICAL_UNIT_RESET 0x10 187 #define FCP_CLEAR_TASK_SET 0x04 188 #define FCP_ABORT_TASK_SET 0x02 189 190 #define FCP_CDB_LENGTH 16 191 192 #define ZFCP_DID_MASK 0x00FFFFFF 193 194 /* FCP(-2) FCP_CMND IU */ 195 struct fcp_cmnd_iu { 196 fcp_lun_t fcp_lun; /* FCP logical unit number */ 197 u8 crn; /* command reference number */ 198 u8 reserved0:5; /* reserved */ 199 u8 task_attribute:3; /* task attribute */ 200 u8 task_management_flags; /* task management flags */ 201 u8 add_fcp_cdb_length:6; /* additional FCP_CDB length */ 202 u8 rddata:1; /* read data */ 203 u8 wddata:1; /* write data */ 204 u8 fcp_cdb[FCP_CDB_LENGTH]; 205 } __attribute__((packed)); 206 207 /* FCP(-2) FCP_RSP IU */ 208 struct fcp_rsp_iu { 209 u8 reserved0[10]; 210 union { 211 struct { 212 u8 reserved1:3; 213 u8 fcp_conf_req:1; 214 u8 fcp_resid_under:1; 215 u8 fcp_resid_over:1; 216 u8 fcp_sns_len_valid:1; 217 u8 fcp_rsp_len_valid:1; 218 } bits; 219 u8 value; 220 } validity; 221 u8 scsi_status; 222 u32 fcp_resid; 223 u32 fcp_sns_len; 224 u32 fcp_rsp_len; 225 } __attribute__((packed)); 226 227 228 #define RSP_CODE_GOOD 0 229 #define RSP_CODE_LENGTH_MISMATCH 1 230 #define RSP_CODE_FIELD_INVALID 2 231 #define RSP_CODE_RO_MISMATCH 3 232 #define RSP_CODE_TASKMAN_UNSUPP 4 233 #define RSP_CODE_TASKMAN_FAILED 5 234 235 /* see fc-fs */ 236 #define LS_FAN 0x60000000 237 #define LS_RSCN 0x61040000 238 239 struct fcp_rscn_head { 240 u8 command; 241 u8 page_length; /* always 0x04 */ 242 u16 payload_len; 243 } __attribute__((packed)); 244 245 struct fcp_rscn_element { 246 u8 reserved:2; 247 u8 event_qual:4; 248 u8 addr_format:2; 249 u32 nport_did:24; 250 } __attribute__((packed)); 251 252 #define ZFCP_PORT_ADDRESS 0x0 253 #define ZFCP_AREA_ADDRESS 0x1 254 #define ZFCP_DOMAIN_ADDRESS 0x2 255 #define ZFCP_FABRIC_ADDRESS 0x3 256 257 #define ZFCP_PORTS_RANGE_PORT 0xFFFFFF 258 #define ZFCP_PORTS_RANGE_AREA 0xFFFF00 259 #define ZFCP_PORTS_RANGE_DOMAIN 0xFF0000 260 #define ZFCP_PORTS_RANGE_FABRIC 0x000000 261 262 #define ZFCP_NO_PORTS_PER_AREA 0x100 263 #define ZFCP_NO_PORTS_PER_DOMAIN 0x10000 264 #define ZFCP_NO_PORTS_PER_FABRIC 0x1000000 265 266 struct fcp_fan { 267 u32 command; 268 u32 fport_did; 269 wwn_t fport_wwpn; 270 wwn_t fport_wwname; 271 } __attribute__((packed)); 272 273 /* see fc-ph */ 274 struct fcp_logo { 275 u32 command; 276 u32 nport_did; 277 wwn_t nport_wwpn; 278 } __attribute__((packed)); 279 280 /* 281 * DBF stuff 282 */ 283 #define ZFCP_DBF_TAG_SIZE 4 284 285 struct zfcp_dbf_dump { 286 u8 tag[ZFCP_DBF_TAG_SIZE]; 287 u32 total_size; /* size of total dump data */ 288 u32 offset; /* how much data has being already dumped */ 289 u32 size; /* how much data comes with this record */ 290 u8 data[]; /* dump data */ 291 } __attribute__ ((packed)); 292 293 /* FIXME: to be inflated when reworking the erp dbf */ 294 struct zfcp_erp_dbf_record { 295 u8 dummy[16]; 296 } __attribute__ ((packed)); 297 298 struct zfcp_hba_dbf_record_response { 299 u32 fsf_command; 300 u64 fsf_reqid; 301 u32 fsf_seqno; 302 u64 fsf_issued; 303 u32 fsf_prot_status; 304 u32 fsf_status; 305 u8 fsf_prot_status_qual[FSF_PROT_STATUS_QUAL_SIZE]; 306 u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE]; 307 u32 fsf_req_status; 308 u8 sbal_first; 309 u8 sbal_curr; 310 u8 sbal_last; 311 u8 pool; 312 u64 erp_action; 313 union { 314 struct { 315 u64 scsi_cmnd; 316 u64 scsi_serial; 317 } send_fcp; 318 struct { 319 u64 wwpn; 320 u32 d_id; 321 u32 port_handle; 322 } port; 323 struct { 324 u64 wwpn; 325 u64 fcp_lun; 326 u32 port_handle; 327 u32 lun_handle; 328 } unit; 329 struct { 330 u32 d_id; 331 u8 ls_code; 332 } send_els; 333 } data; 334 } __attribute__ ((packed)); 335 336 struct zfcp_hba_dbf_record_status { 337 u8 failed; 338 u32 status_type; 339 u32 status_subtype; 340 struct fsf_queue_designator 341 queue_designator; 342 u32 payload_size; 343 #define ZFCP_DBF_UNSOL_PAYLOAD 80 344 #define ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL 32 345 #define ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD 56 346 #define ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT 2 * sizeof(u32) 347 u8 payload[ZFCP_DBF_UNSOL_PAYLOAD]; 348 } __attribute__ ((packed)); 349 350 struct zfcp_hba_dbf_record_qdio { 351 u32 status; 352 u32 qdio_error; 353 u32 siga_error; 354 u8 sbal_index; 355 u8 sbal_count; 356 } __attribute__ ((packed)); 357 358 struct zfcp_hba_dbf_record { 359 u8 tag[ZFCP_DBF_TAG_SIZE]; 360 u8 tag2[ZFCP_DBF_TAG_SIZE]; 361 union { 362 struct zfcp_hba_dbf_record_response response; 363 struct zfcp_hba_dbf_record_status status; 364 struct zfcp_hba_dbf_record_qdio qdio; 365 } type; 366 } __attribute__ ((packed)); 367 368 struct zfcp_san_dbf_record_ct { 369 union { 370 struct { 371 u16 cmd_req_code; 372 u8 revision; 373 u8 gs_type; 374 u8 gs_subtype; 375 u8 options; 376 u16 max_res_size; 377 } request; 378 struct { 379 u16 cmd_rsp_code; 380 u8 revision; 381 u8 reason_code; 382 u8 reason_code_expl; 383 u8 vendor_unique; 384 } response; 385 } type; 386 u32 payload_size; 387 #define ZFCP_DBF_CT_PAYLOAD 24 388 u8 payload[ZFCP_DBF_CT_PAYLOAD]; 389 } __attribute__ ((packed)); 390 391 struct zfcp_san_dbf_record_els { 392 u8 ls_code; 393 u32 payload_size; 394 #define ZFCP_DBF_ELS_PAYLOAD 32 395 #define ZFCP_DBF_ELS_MAX_PAYLOAD 1024 396 u8 payload[ZFCP_DBF_ELS_PAYLOAD]; 397 } __attribute__ ((packed)); 398 399 struct zfcp_san_dbf_record { 400 u8 tag[ZFCP_DBF_TAG_SIZE]; 401 u64 fsf_reqid; 402 u32 fsf_seqno; 403 u32 s_id; 404 u32 d_id; 405 union { 406 struct zfcp_san_dbf_record_ct ct; 407 struct zfcp_san_dbf_record_els els; 408 } type; 409 } __attribute__ ((packed)); 410 411 struct zfcp_scsi_dbf_record { 412 u8 tag[ZFCP_DBF_TAG_SIZE]; 413 u8 tag2[ZFCP_DBF_TAG_SIZE]; 414 u32 scsi_id; 415 u32 scsi_lun; 416 u32 scsi_result; 417 u64 scsi_cmnd; 418 u64 scsi_serial; 419 #define ZFCP_DBF_SCSI_OPCODE 16 420 u8 scsi_opcode[ZFCP_DBF_SCSI_OPCODE]; 421 u8 scsi_retries; 422 u8 scsi_allowed; 423 u64 fsf_reqid; 424 u32 fsf_seqno; 425 u64 fsf_issued; 426 union { 427 u64 old_fsf_reqid; 428 struct { 429 u8 rsp_validity; 430 u8 rsp_scsi_status; 431 u32 rsp_resid; 432 u8 rsp_code; 433 #define ZFCP_DBF_SCSI_FCP_SNS_INFO 16 434 #define ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO 256 435 u32 sns_info_len; 436 u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO]; 437 } fcp; 438 } type; 439 } __attribute__ ((packed)); 440 441 /* 442 * FC-FS stuff 443 */ 444 #define R_A_TOV 10 /* seconds */ 445 #define ZFCP_ELS_TIMEOUT (2 * R_A_TOV) 446 447 #define ZFCP_LS_RLS 0x0f 448 #define ZFCP_LS_ADISC 0x52 449 #define ZFCP_LS_RPS 0x56 450 #define ZFCP_LS_RSCN 0x61 451 #define ZFCP_LS_RNID 0x78 452 453 struct zfcp_ls_rjt_par { 454 u8 action; 455 u8 reason_code; 456 u8 reason_expl; 457 u8 vendor_unique; 458 } __attribute__ ((packed)); 459 460 struct zfcp_ls_adisc { 461 u8 code; 462 u8 field[3]; 463 u32 hard_nport_id; 464 u64 wwpn; 465 u64 wwnn; 466 u32 nport_id; 467 } __attribute__ ((packed)); 468 469 struct zfcp_ls_adisc_acc { 470 u8 code; 471 u8 field[3]; 472 u32 hard_nport_id; 473 u64 wwpn; 474 u64 wwnn; 475 u32 nport_id; 476 } __attribute__ ((packed)); 477 478 struct zfcp_rc_entry { 479 u8 code; 480 const char *description; 481 }; 482 483 /* 484 * FC-GS-2 stuff 485 */ 486 #define ZFCP_CT_REVISION 0x01 487 #define ZFCP_CT_DIRECTORY_SERVICE 0xFC 488 #define ZFCP_CT_NAME_SERVER 0x02 489 #define ZFCP_CT_SYNCHRONOUS 0x00 490 #define ZFCP_CT_GID_PN 0x0121 491 #define ZFCP_CT_MAX_SIZE 0x1020 492 #define ZFCP_CT_ACCEPT 0x8002 493 #define ZFCP_CT_REJECT 0x8001 494 495 /* 496 * FC-GS-4 stuff 497 */ 498 #define ZFCP_CT_TIMEOUT (3 * R_A_TOV) 499 500 /******************** LOGGING MACROS AND DEFINES *****************************/ 501 502 /* 503 * Logging may be applied on certain kinds of driver operations 504 * independently. Additionally, different log-levels are supported for 505 * each of these areas. 506 */ 507 508 #define ZFCP_NAME "zfcp" 509 510 /* read-only LUN sharing switch initial value */ 511 #define ZFCP_RO_LUN_SHARING_DEFAULTS 0 512 513 /* independent log areas */ 514 #define ZFCP_LOG_AREA_OTHER 0 515 #define ZFCP_LOG_AREA_SCSI 1 516 #define ZFCP_LOG_AREA_FSF 2 517 #define ZFCP_LOG_AREA_CONFIG 3 518 #define ZFCP_LOG_AREA_CIO 4 519 #define ZFCP_LOG_AREA_QDIO 5 520 #define ZFCP_LOG_AREA_ERP 6 521 #define ZFCP_LOG_AREA_FC 7 522 523 /* log level values*/ 524 #define ZFCP_LOG_LEVEL_NORMAL 0 525 #define ZFCP_LOG_LEVEL_INFO 1 526 #define ZFCP_LOG_LEVEL_DEBUG 2 527 #define ZFCP_LOG_LEVEL_TRACE 3 528 529 /* 530 * this allows removal of logging code by the preprocessor 531 * (the most detailed log level still to be compiled in is specified, 532 * higher log levels are removed) 533 */ 534 #define ZFCP_LOG_LEVEL_LIMIT ZFCP_LOG_LEVEL_TRACE 535 536 /* get "loglevel" nibble assignment */ 537 #define ZFCP_GET_LOG_VALUE(zfcp_lognibble) \ 538 ((atomic_read(&zfcp_data.loglevel) >> (zfcp_lognibble<<2)) & 0xF) 539 540 /* set "loglevel" nibble */ 541 #define ZFCP_SET_LOG_NIBBLE(value, zfcp_lognibble) \ 542 (value << (zfcp_lognibble << 2)) 543 544 /* all log-level defaults are combined to generate initial log-level */ 545 #define ZFCP_LOG_LEVEL_DEFAULTS \ 546 (ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_OTHER) | \ 547 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_SCSI) | \ 548 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FSF) | \ 549 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CONFIG) | \ 550 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CIO) | \ 551 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_QDIO) | \ 552 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_ERP) | \ 553 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FC)) 554 555 /* check whether we have the right level for logging */ 556 #define ZFCP_LOG_CHECK(level) \ 557 ((ZFCP_GET_LOG_VALUE(ZFCP_LOG_AREA)) >= level) 558 559 /* logging routine for zfcp */ 560 #define _ZFCP_LOG(fmt, args...) \ 561 printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __FUNCTION__, \ 562 __LINE__ , ##args) 563 564 #define ZFCP_LOG(level, fmt, args...) \ 565 do { \ 566 if (ZFCP_LOG_CHECK(level)) \ 567 _ZFCP_LOG(fmt, ##args); \ 568 } while (0) 569 570 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_NORMAL 571 # define ZFCP_LOG_NORMAL(fmt, args...) 572 #else 573 # define ZFCP_LOG_NORMAL(fmt, args...) \ 574 do { \ 575 if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_NORMAL)) \ 576 printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \ 577 } while (0) 578 #endif 579 580 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_INFO 581 # define ZFCP_LOG_INFO(fmt, args...) 582 #else 583 # define ZFCP_LOG_INFO(fmt, args...) \ 584 do { \ 585 if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_INFO)) \ 586 printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \ 587 } while (0) 588 #endif 589 590 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG 591 # define ZFCP_LOG_DEBUG(fmt, args...) 592 #else 593 # define ZFCP_LOG_DEBUG(fmt, args...) \ 594 ZFCP_LOG(ZFCP_LOG_LEVEL_DEBUG, fmt , ##args) 595 #endif 596 597 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_TRACE 598 # define ZFCP_LOG_TRACE(fmt, args...) 599 #else 600 # define ZFCP_LOG_TRACE(fmt, args...) \ 601 ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args) 602 #endif 603 604 /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/ 605 606 /* 607 * Note, the leftmost status byte is common among adapter, port 608 * and unit 609 */ 610 #define ZFCP_COMMON_FLAGS 0xfff00000 611 #define ZFCP_SPECIFIC_FLAGS 0x000fffff 612 613 /* common status bits */ 614 #define ZFCP_STATUS_COMMON_REMOVE 0x80000000 615 #define ZFCP_STATUS_COMMON_RUNNING 0x40000000 616 #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 617 #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 618 #define ZFCP_STATUS_COMMON_OPENING 0x08000000 619 #define ZFCP_STATUS_COMMON_OPEN 0x04000000 620 #define ZFCP_STATUS_COMMON_CLOSING 0x02000000 621 #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 622 #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 623 #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 624 625 /* adapter status */ 626 #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 627 #define ZFCP_STATUS_ADAPTER_REGISTERED 0x00000004 628 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 629 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 630 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP 0x00000020 631 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080 632 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 633 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 634 #define ZFCP_STATUS_ADAPTER_XPORT_OK 0x00000800 635 636 #define ZFCP_STATUS_ADAPTER_SCSI_UP \ 637 (ZFCP_STATUS_COMMON_UNBLOCKED | \ 638 ZFCP_STATUS_ADAPTER_REGISTERED) 639 640 641 /* FC-PH/FC-GS well-known address identifiers for generic services */ 642 #define ZFCP_DID_MANAGEMENT_SERVICE 0xFFFFFA 643 #define ZFCP_DID_TIME_SERVICE 0xFFFFFB 644 #define ZFCP_DID_DIRECTORY_SERVICE 0xFFFFFC 645 #define ZFCP_DID_ALIAS_SERVICE 0xFFFFF8 646 #define ZFCP_DID_KEY_DISTRIBUTION_SERVICE 0xFFFFF7 647 648 /* remote port status */ 649 #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 650 #define ZFCP_STATUS_PORT_DID_DID 0x00000002 651 #define ZFCP_STATUS_PORT_PHYS_CLOSING 0x00000004 652 #define ZFCP_STATUS_PORT_NO_WWPN 0x00000008 653 #define ZFCP_STATUS_PORT_NO_SCSI_ID 0x00000010 654 #define ZFCP_STATUS_PORT_INVALID_WWPN 0x00000020 655 #define ZFCP_STATUS_PORT_ACCESS_DENIED 0x00000040 656 657 /* for ports with well known addresses */ 658 #define ZFCP_STATUS_PORT_WKA \ 659 (ZFCP_STATUS_PORT_NO_WWPN | \ 660 ZFCP_STATUS_PORT_NO_SCSI_ID) 661 662 /* logical unit status */ 663 #define ZFCP_STATUS_UNIT_NOTSUPPUNITRESET 0x00000001 664 #define ZFCP_STATUS_UNIT_TEMPORARY 0x00000002 665 #define ZFCP_STATUS_UNIT_SHARED 0x00000004 666 #define ZFCP_STATUS_UNIT_READONLY 0x00000008 667 #define ZFCP_STATUS_UNIT_REGISTERED 0x00000010 668 669 /* FSF request status (this does not have a common part) */ 670 #define ZFCP_STATUS_FSFREQ_NOT_INIT 0x00000000 671 #define ZFCP_STATUS_FSFREQ_POOL 0x00000001 672 #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002 673 #define ZFCP_STATUS_FSFREQ_COMPLETED 0x00000004 674 #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 675 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 676 #define ZFCP_STATUS_FSFREQ_ABORTING 0x00000020 677 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 678 #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 679 #define ZFCP_STATUS_FSFREQ_ABORTED 0x00000100 680 #define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200 681 #define ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP 0x00000400 682 #define ZFCP_STATUS_FSFREQ_RETRY 0x00000800 683 #define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000 684 685 /*********************** ERROR RECOVERY PROCEDURE DEFINES ********************/ 686 687 #define ZFCP_MAX_ERPS 3 688 689 #define ZFCP_ERP_FSFREQ_TIMEOUT (30 * HZ) 690 #define ZFCP_ERP_MEMWAIT_TIMEOUT HZ 691 692 #define ZFCP_STATUS_ERP_TIMEDOUT 0x10000000 693 #define ZFCP_STATUS_ERP_CLOSE_ONLY 0x01000000 694 #define ZFCP_STATUS_ERP_DISMISSING 0x00100000 695 #define ZFCP_STATUS_ERP_DISMISSED 0x00200000 696 #define ZFCP_STATUS_ERP_LOWMEM 0x00400000 697 698 #define ZFCP_ERP_STEP_UNINITIALIZED 0x00000000 699 #define ZFCP_ERP_STEP_FSF_XCONFIG 0x00000001 700 #define ZFCP_ERP_STEP_PHYS_PORT_CLOSING 0x00000010 701 #define ZFCP_ERP_STEP_PORT_CLOSING 0x00000100 702 #define ZFCP_ERP_STEP_NAMESERVER_OPEN 0x00000200 703 #define ZFCP_ERP_STEP_NAMESERVER_LOOKUP 0x00000400 704 #define ZFCP_ERP_STEP_PORT_OPENING 0x00000800 705 #define ZFCP_ERP_STEP_UNIT_CLOSING 0x00001000 706 #define ZFCP_ERP_STEP_UNIT_OPENING 0x00002000 707 708 /* Ordered by escalation level (necessary for proper erp-code operation) */ 709 #define ZFCP_ERP_ACTION_REOPEN_ADAPTER 0x4 710 #define ZFCP_ERP_ACTION_REOPEN_PORT_FORCED 0x3 711 #define ZFCP_ERP_ACTION_REOPEN_PORT 0x2 712 #define ZFCP_ERP_ACTION_REOPEN_UNIT 0x1 713 714 #define ZFCP_ERP_ACTION_RUNNING 0x1 715 #define ZFCP_ERP_ACTION_READY 0x2 716 717 #define ZFCP_ERP_SUCCEEDED 0x0 718 #define ZFCP_ERP_FAILED 0x1 719 #define ZFCP_ERP_CONTINUES 0x2 720 #define ZFCP_ERP_EXIT 0x3 721 #define ZFCP_ERP_DISMISSED 0x4 722 #define ZFCP_ERP_NOMEM 0x5 723 724 725 /******************** CFDC SPECIFIC STUFF *****************************/ 726 727 /* Firewall data channel sense data record */ 728 struct zfcp_cfdc_sense_data { 729 u32 signature; /* Request signature */ 730 u32 devno; /* FCP adapter device number */ 731 u32 command; /* Command code */ 732 u32 fsf_status; /* FSF request status and status qualifier */ 733 u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE]; 734 u8 payloads[256]; /* Access conflicts list */ 735 u8 control_file[0]; /* Access control table */ 736 }; 737 738 #define ZFCP_CFDC_SIGNATURE 0xCFDCACDF 739 740 #define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL 0x00010001 741 #define ZFCP_CFDC_CMND_DOWNLOAD_FORCE 0x00010101 742 #define ZFCP_CFDC_CMND_FULL_ACCESS 0x00000201 743 #define ZFCP_CFDC_CMND_RESTRICTED_ACCESS 0x00000401 744 #define ZFCP_CFDC_CMND_UPLOAD 0x00010002 745 746 #define ZFCP_CFDC_DOWNLOAD 0x00000001 747 #define ZFCP_CFDC_UPLOAD 0x00000002 748 #define ZFCP_CFDC_WITH_CONTROL_FILE 0x00010000 749 750 #define ZFCP_CFDC_DEV_NAME "zfcp_cfdc" 751 #define ZFCP_CFDC_DEV_MAJOR MISC_MAJOR 752 #define ZFCP_CFDC_DEV_MINOR MISC_DYNAMIC_MINOR 753 754 #define ZFCP_CFDC_MAX_CONTROL_FILE_SIZE 127 * 1024 755 756 /************************* STRUCTURE DEFINITIONS *****************************/ 757 758 struct zfcp_fsf_req; 759 760 /* holds various memory pools of an adapter */ 761 struct zfcp_adapter_mempool { 762 mempool_t *fsf_req_erp; 763 mempool_t *fsf_req_scsi; 764 mempool_t *fsf_req_abort; 765 mempool_t *fsf_req_status_read; 766 mempool_t *data_status_read; 767 mempool_t *data_gid_pn; 768 }; 769 770 /* 771 * header for CT_IU 772 */ 773 struct ct_hdr { 774 u8 revision; // 0x01 775 u8 in_id[3]; // 0x00 776 u8 gs_type; // 0xFC Directory Service 777 u8 gs_subtype; // 0x02 Name Server 778 u8 options; // 0x00 single bidirectional exchange 779 u8 reserved0; 780 u16 cmd_rsp_code; // 0x0121 GID_PN, or 0x0100 GA_NXT 781 u16 max_res_size; // <= (4096 - 16) / 4 782 u8 reserved1; 783 u8 reason_code; 784 u8 reason_code_expl; 785 u8 vendor_unique; 786 } __attribute__ ((packed)); 787 788 /* nameserver request CT_IU -- for requests where 789 * a port name is required */ 790 struct ct_iu_gid_pn_req { 791 struct ct_hdr header; 792 wwn_t wwpn; 793 } __attribute__ ((packed)); 794 795 /* FS_ACC IU and data unit for GID_PN nameserver request */ 796 struct ct_iu_gid_pn_resp { 797 struct ct_hdr header; 798 u32 d_id; 799 } __attribute__ ((packed)); 800 801 typedef void (*zfcp_send_ct_handler_t)(unsigned long); 802 803 /** 804 * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct 805 * @port: port where the request is sent to 806 * @req: scatter-gather list for request 807 * @resp: scatter-gather list for response 808 * @req_count: number of elements in request scatter-gather list 809 * @resp_count: number of elements in response scatter-gather list 810 * @handler: handler function (called for response to the request) 811 * @handler_data: data passed to handler function 812 * @pool: pointer to memory pool for ct request structure 813 * @timeout: FSF timeout for this request 814 * @timer: timer (e.g. for request initiated by erp) 815 * @completion: completion for synchronization purposes 816 * @status: used to pass error status to calling function 817 */ 818 struct zfcp_send_ct { 819 struct zfcp_port *port; 820 struct scatterlist *req; 821 struct scatterlist *resp; 822 unsigned int req_count; 823 unsigned int resp_count; 824 zfcp_send_ct_handler_t handler; 825 unsigned long handler_data; 826 mempool_t *pool; 827 int timeout; 828 struct timer_list *timer; 829 struct completion *completion; 830 int status; 831 }; 832 833 /* used for name server requests in error recovery */ 834 struct zfcp_gid_pn_data { 835 struct zfcp_send_ct ct; 836 struct scatterlist req; 837 struct scatterlist resp; 838 struct ct_iu_gid_pn_req ct_iu_req; 839 struct ct_iu_gid_pn_resp ct_iu_resp; 840 struct zfcp_port *port; 841 }; 842 843 typedef void (*zfcp_send_els_handler_t)(unsigned long); 844 845 /** 846 * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els 847 * @adapter: adapter where request is sent from 848 * @port: port where ELS is destinated (port reference count has to be increased) 849 * @d_id: destiniation id of port where request is sent to 850 * @req: scatter-gather list for request 851 * @resp: scatter-gather list for response 852 * @req_count: number of elements in request scatter-gather list 853 * @resp_count: number of elements in response scatter-gather list 854 * @handler: handler function (called for response to the request) 855 * @handler_data: data passed to handler function 856 * @timer: timer (e.g. for request initiated by erp) 857 * @completion: completion for synchronization purposes 858 * @ls_code: hex code of ELS command 859 * @status: used to pass error status to calling function 860 */ 861 struct zfcp_send_els { 862 struct zfcp_adapter *adapter; 863 struct zfcp_port *port; 864 u32 d_id; 865 struct scatterlist *req; 866 struct scatterlist *resp; 867 unsigned int req_count; 868 unsigned int resp_count; 869 zfcp_send_els_handler_t handler; 870 unsigned long handler_data; 871 struct timer_list *timer; 872 struct completion *completion; 873 int ls_code; 874 int status; 875 }; 876 877 struct zfcp_qdio_queue { 878 struct qdio_buffer *buffer[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ 879 u8 free_index; /* index of next free bfr 880 in queue (free_count>0) */ 881 atomic_t free_count; /* number of free buffers 882 in queue */ 883 rwlock_t queue_lock; /* lock for operations on queue */ 884 int distance_from_int; /* SBALs used since PCI indication 885 was last set */ 886 }; 887 888 struct zfcp_erp_action { 889 struct list_head list; 890 int action; /* requested action code */ 891 struct zfcp_adapter *adapter; /* device which should be recovered */ 892 struct zfcp_port *port; 893 struct zfcp_unit *unit; 894 volatile u32 status; /* recovery status */ 895 u32 step; /* active step of this erp action */ 896 struct zfcp_fsf_req *fsf_req; /* fsf request currently pending 897 for this action */ 898 struct timer_list timer; 899 }; 900 901 902 struct zfcp_adapter { 903 struct list_head list; /* list of adapters */ 904 atomic_t refcount; /* reference count */ 905 wait_queue_head_t remove_wq; /* can be used to wait for 906 refcount drop to zero */ 907 wwn_t peer_wwnn; /* P2P peer WWNN */ 908 wwn_t peer_wwpn; /* P2P peer WWPN */ 909 u32 peer_d_id; /* P2P peer D_ID */ 910 struct ccw_device *ccw_device; /* S/390 ccw device */ 911 u8 fc_service_class; 912 u32 hydra_version; /* Hydra version */ 913 u32 fsf_lic_version; 914 u32 adapter_features; /* FCP channel features */ 915 u32 connection_features; /* host connection features */ 916 u32 hardware_version; /* of FCP channel */ 917 struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ 918 unsigned short scsi_host_no; /* Assigned host number */ 919 unsigned char name[9]; 920 struct list_head port_list_head; /* remote port list */ 921 struct list_head port_remove_lh; /* head of ports to be 922 removed */ 923 u32 ports; /* number of remote ports */ 924 struct timer_list scsi_er_timer; /* SCSI err recovery watch */ 925 struct list_head fsf_req_list_head; /* head of FSF req list */ 926 spinlock_t fsf_req_list_lock; /* lock for ops on list of 927 FSF requests */ 928 atomic_t fsf_reqs_active; /* # active FSF reqs */ 929 struct zfcp_qdio_queue request_queue; /* request queue */ 930 u32 fsf_req_seq_no; /* FSF cmnd seq number */ 931 wait_queue_head_t request_wq; /* can be used to wait for 932 more avaliable SBALs */ 933 struct zfcp_qdio_queue response_queue; /* response queue */ 934 rwlock_t abort_lock; /* Protects against SCSI 935 stack abort/command 936 completion races */ 937 u16 status_read_failed; /* # failed status reads */ 938 atomic_t status; /* status of this adapter */ 939 struct list_head erp_ready_head; /* error recovery for this 940 adapter/devices */ 941 struct list_head erp_running_head; 942 rwlock_t erp_lock; 943 struct semaphore erp_ready_sem; 944 wait_queue_head_t erp_thread_wqh; 945 wait_queue_head_t erp_done_wqh; 946 struct zfcp_erp_action erp_action; /* pending error recovery */ 947 atomic_t erp_counter; 948 u32 erp_total_count; /* total nr of enqueued erp 949 actions */ 950 u32 erp_low_mem_count; /* nr of erp actions waiting 951 for memory */ 952 struct zfcp_port *nameserver_port; /* adapter's nameserver */ 953 debug_info_t *erp_dbf; 954 debug_info_t *hba_dbf; 955 debug_info_t *san_dbf; /* debug feature areas */ 956 debug_info_t *scsi_dbf; 957 spinlock_t erp_dbf_lock; 958 spinlock_t hba_dbf_lock; 959 spinlock_t san_dbf_lock; 960 spinlock_t scsi_dbf_lock; 961 struct zfcp_erp_dbf_record erp_dbf_buf; 962 struct zfcp_hba_dbf_record hba_dbf_buf; 963 struct zfcp_san_dbf_record san_dbf_buf; 964 struct zfcp_scsi_dbf_record scsi_dbf_buf; 965 struct zfcp_adapter_mempool pool; /* Adapter memory pools */ 966 struct qdio_initialize qdio_init_data; /* for qdio_establish */ 967 struct device generic_services; /* directory for WKA ports */ 968 struct fc_host_statistics *fc_stats; 969 struct fsf_qtcb_bottom_port *stats_reset_data; 970 unsigned long stats_reset; 971 }; 972 973 /* 974 * the struct device sysfs_device must be at the beginning of this structure. 975 * pointer to struct device is used to free port structure in release function 976 * of the device. don't change! 977 */ 978 struct zfcp_port { 979 struct device sysfs_device; /* sysfs device */ 980 struct fc_rport *rport; /* rport of fc transport class */ 981 struct list_head list; /* list of remote ports */ 982 atomic_t refcount; /* reference count */ 983 wait_queue_head_t remove_wq; /* can be used to wait for 984 refcount drop to zero */ 985 struct zfcp_adapter *adapter; /* adapter used to access port */ 986 struct list_head unit_list_head; /* head of logical unit list */ 987 struct list_head unit_remove_lh; /* head of luns to be removed 988 list */ 989 u32 units; /* # of logical units in list */ 990 atomic_t status; /* status of this remote port */ 991 wwn_t wwnn; /* WWNN if known */ 992 wwn_t wwpn; /* WWPN */ 993 u32 d_id; /* D_ID */ 994 u32 handle; /* handle assigned by FSF */ 995 struct zfcp_erp_action erp_action; /* pending error recovery */ 996 atomic_t erp_counter; 997 }; 998 999 /* the struct device sysfs_device must be at the beginning of this structure. 1000 * pointer to struct device is used to free unit structure in release function 1001 * of the device. don't change! 1002 */ 1003 struct zfcp_unit { 1004 struct device sysfs_device; /* sysfs device */ 1005 struct list_head list; /* list of logical units */ 1006 atomic_t refcount; /* reference count */ 1007 wait_queue_head_t remove_wq; /* can be used to wait for 1008 refcount drop to zero */ 1009 struct zfcp_port *port; /* remote port of unit */ 1010 atomic_t status; /* status of this logical unit */ 1011 scsi_lun_t scsi_lun; /* own SCSI LUN */ 1012 fcp_lun_t fcp_lun; /* own FCP_LUN */ 1013 u32 handle; /* handle assigned by FSF */ 1014 struct scsi_device *device; /* scsi device struct pointer */ 1015 struct zfcp_erp_action erp_action; /* pending error recovery */ 1016 atomic_t erp_counter; 1017 }; 1018 1019 /* FSF request */ 1020 struct zfcp_fsf_req { 1021 struct list_head list; /* list of FSF requests */ 1022 struct zfcp_adapter *adapter; /* adapter request belongs to */ 1023 u8 sbal_number; /* nr of SBALs free for use */ 1024 u8 sbal_first; /* first SBAL for this request */ 1025 u8 sbal_last; /* last possible SBAL for 1026 this reuest */ 1027 u8 sbal_curr; /* current SBAL during creation 1028 of request */ 1029 u8 sbale_curr; /* current SBALE during creation 1030 of request */ 1031 wait_queue_head_t completion_wq; /* can be used by a routine 1032 to wait for completion */ 1033 volatile u32 status; /* status of this request */ 1034 u32 fsf_command; /* FSF Command copy */ 1035 struct fsf_qtcb *qtcb; /* address of associated QTCB */ 1036 u32 seq_no; /* Sequence number of request */ 1037 unsigned long data; /* private data of request */ 1038 struct zfcp_erp_action *erp_action; /* used if this request is 1039 issued on behalf of erp */ 1040 mempool_t *pool; /* used if request was alloacted 1041 from emergency pool */ 1042 unsigned long long issued; /* request sent time (STCK) */ 1043 struct zfcp_unit *unit; 1044 }; 1045 1046 typedef void zfcp_fsf_req_handler_t(struct zfcp_fsf_req*); 1047 1048 /* driver data */ 1049 struct zfcp_data { 1050 struct scsi_host_template scsi_host_template; 1051 atomic_t status; /* Module status flags */ 1052 struct list_head adapter_list_head; /* head of adapter list */ 1053 struct list_head adapter_remove_lh; /* head of adapters to be 1054 removed */ 1055 rwlock_t status_read_lock; /* for status read thread */ 1056 struct list_head status_read_receive_head; 1057 struct list_head status_read_send_head; 1058 struct semaphore status_read_sema; 1059 wait_queue_head_t status_read_thread_wqh; 1060 u32 adapters; /* # of adapters in list */ 1061 rwlock_t config_lock; /* serialises changes 1062 to adapter/port/unit 1063 lists */ 1064 struct semaphore config_sema; /* serialises configuration 1065 changes */ 1066 atomic_t loglevel; /* current loglevel */ 1067 char init_busid[BUS_ID_SIZE]; 1068 wwn_t init_wwpn; 1069 fcp_lun_t init_fcp_lun; 1070 char *driver_version; 1071 }; 1072 1073 /** 1074 * struct zfcp_sg_list - struct describing a scatter-gather list 1075 * @sg: pointer to array of (struct scatterlist) 1076 * @count: number of elements in scatter-gather list 1077 */ 1078 struct zfcp_sg_list { 1079 struct scatterlist *sg; 1080 unsigned int count; 1081 }; 1082 1083 /* number of elements for various memory pools */ 1084 #define ZFCP_POOL_FSF_REQ_ERP_NR 1 1085 #define ZFCP_POOL_FSF_REQ_SCSI_NR 1 1086 #define ZFCP_POOL_FSF_REQ_ABORT_NR 1 1087 #define ZFCP_POOL_STATUS_READ_NR ZFCP_STATUS_READS_RECOM 1088 #define ZFCP_POOL_DATA_GID_PN_NR 1 1089 1090 /* struct used by memory pools for fsf_requests */ 1091 struct zfcp_fsf_req_pool_element { 1092 struct zfcp_fsf_req fsf_req; 1093 struct fsf_qtcb qtcb; 1094 }; 1095 1096 /********************** ZFCP SPECIFIC DEFINES ********************************/ 1097 1098 #define ZFCP_FSFREQ_CLEANUP_TIMEOUT HZ/10 1099 1100 #define ZFCP_KNOWN 0x00000001 1101 #define ZFCP_REQ_AUTO_CLEANUP 0x00000002 1102 #define ZFCP_WAIT_FOR_SBAL 0x00000004 1103 #define ZFCP_REQ_NO_QTCB 0x00000008 1104 1105 #define ZFCP_SET 0x00000100 1106 #define ZFCP_CLEAR 0x00000200 1107 1108 #define ZFCP_INTERRUPTIBLE 1 1109 #define ZFCP_UNINTERRUPTIBLE 0 1110 1111 #ifndef atomic_test_mask 1112 #define atomic_test_mask(mask, target) \ 1113 ((atomic_read(target) & mask) == mask) 1114 #endif 1115 1116 extern void _zfcp_hex_dump(char *, int); 1117 #define ZFCP_HEX_DUMP(level, addr, count) \ 1118 if (ZFCP_LOG_CHECK(level)) { \ 1119 _zfcp_hex_dump(addr, count); \ 1120 } 1121 1122 #define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id) 1123 #define zfcp_get_busid_by_port(port) (zfcp_get_busid_by_adapter(port->adapter)) 1124 #define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port)) 1125 1126 /* 1127 * functions needed for reference/usage counting 1128 */ 1129 1130 static inline void 1131 zfcp_unit_get(struct zfcp_unit *unit) 1132 { 1133 atomic_inc(&unit->refcount); 1134 } 1135 1136 static inline void 1137 zfcp_unit_put(struct zfcp_unit *unit) 1138 { 1139 if (atomic_dec_return(&unit->refcount) == 0) 1140 wake_up(&unit->remove_wq); 1141 } 1142 1143 static inline void 1144 zfcp_unit_wait(struct zfcp_unit *unit) 1145 { 1146 wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0); 1147 } 1148 1149 static inline void 1150 zfcp_port_get(struct zfcp_port *port) 1151 { 1152 atomic_inc(&port->refcount); 1153 } 1154 1155 static inline void 1156 zfcp_port_put(struct zfcp_port *port) 1157 { 1158 if (atomic_dec_return(&port->refcount) == 0) 1159 wake_up(&port->remove_wq); 1160 } 1161 1162 static inline void 1163 zfcp_port_wait(struct zfcp_port *port) 1164 { 1165 wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); 1166 } 1167 1168 static inline void 1169 zfcp_adapter_get(struct zfcp_adapter *adapter) 1170 { 1171 atomic_inc(&adapter->refcount); 1172 } 1173 1174 static inline void 1175 zfcp_adapter_put(struct zfcp_adapter *adapter) 1176 { 1177 if (atomic_dec_return(&adapter->refcount) == 0) 1178 wake_up(&adapter->remove_wq); 1179 } 1180 1181 static inline void 1182 zfcp_adapter_wait(struct zfcp_adapter *adapter) 1183 { 1184 wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); 1185 } 1186 1187 #endif /* ZFCP_DEF_H */ 1188