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 #define ZFCP_DEF_REVISION "$Revision: 1.111 $" 38 39 /*************************** INCLUDES *****************************************/ 40 41 #include <linux/init.h> 42 #include <linux/moduleparam.h> 43 #include <linux/miscdevice.h> 44 #include <linux/major.h> 45 #include <linux/blkdev.h> 46 #include <linux/delay.h> 47 #include <linux/timer.h> 48 #include <scsi/scsi.h> 49 #include <scsi/scsi_tcq.h> 50 #include <scsi/scsi_cmnd.h> 51 #include <scsi/scsi_device.h> 52 #include <scsi/scsi_host.h> 53 #include <scsi/scsi_transport.h> 54 #include <scsi/scsi_transport_fc.h> 55 #include "../../fc4/fc.h" 56 #include "zfcp_fsf.h" 57 #include <asm/ccwdev.h> 58 #include <asm/qdio.h> 59 #include <asm/debug.h> 60 #include <asm/ebcdic.h> 61 #include <linux/mempool.h> 62 #include <linux/syscalls.h> 63 #include <linux/ioctl.h> 64 65 66 /********************* GENERAL DEFINES *********************************/ 67 68 /* zfcp version number, it consists of major, minor, and patch-level number */ 69 #define ZFCP_VERSION "4.3.0" 70 71 /** 72 * zfcp_sg_to_address - determine kernel address from struct scatterlist 73 * @list: struct scatterlist 74 * Return: kernel address 75 */ 76 static inline void * 77 zfcp_sg_to_address(struct scatterlist *list) 78 { 79 return (void *) (page_address(list->page) + list->offset); 80 } 81 82 /** 83 * zfcp_address_to_sg - set up struct scatterlist from kernel address 84 * @address: kernel address 85 * @list: struct scatterlist 86 */ 87 static inline void 88 zfcp_address_to_sg(void *address, struct scatterlist *list) 89 { 90 list->page = virt_to_page(address); 91 list->offset = ((unsigned long) address) & (PAGE_SIZE - 1); 92 } 93 94 /********************* SCSI SPECIFIC DEFINES *********************************/ 95 96 /* 32 bit for SCSI ID and LUN as long as the SCSI stack uses this type */ 97 typedef u32 scsi_id_t; 98 typedef u32 scsi_lun_t; 99 100 #define ZFCP_ERP_SCSI_LOW_MEM_TIMEOUT (100*HZ) 101 #define ZFCP_SCSI_ER_TIMEOUT (100*HZ) 102 103 /********************* CIO/QDIO SPECIFIC DEFINES *****************************/ 104 105 /* Adapter Identification Parameters */ 106 #define ZFCP_CONTROL_UNIT_TYPE 0x1731 107 #define ZFCP_CONTROL_UNIT_MODEL 0x03 108 #define ZFCP_DEVICE_TYPE 0x1732 109 #define ZFCP_DEVICE_MODEL 0x03 110 #define ZFCP_DEVICE_MODEL_PRIV 0x04 111 112 /* allow as many chained SBALs as are supported by hardware */ 113 #define ZFCP_MAX_SBALS_PER_REQ FSF_MAX_SBALS_PER_REQ 114 #define ZFCP_MAX_SBALS_PER_CT_REQ FSF_MAX_SBALS_PER_REQ 115 #define ZFCP_MAX_SBALS_PER_ELS_REQ FSF_MAX_SBALS_PER_ELS_REQ 116 117 /* DMQ bug workaround: don't use last SBALE */ 118 #define ZFCP_MAX_SBALES_PER_SBAL (QDIO_MAX_ELEMENTS_PER_BUFFER - 1) 119 120 /* index of last SBALE (with respect to DMQ bug workaround) */ 121 #define ZFCP_LAST_SBALE_PER_SBAL (ZFCP_MAX_SBALES_PER_SBAL - 1) 122 123 /* max. number of (data buffer) SBALEs in largest SBAL chain */ 124 #define ZFCP_MAX_SBALES_PER_REQ \ 125 (ZFCP_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2) 126 /* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */ 127 128 /* FIXME(tune): free space should be one max. SBAL chain plus what? */ 129 #define ZFCP_QDIO_PCI_INTERVAL (QDIO_MAX_BUFFERS_PER_Q \ 130 - (ZFCP_MAX_SBALS_PER_REQ + 4)) 131 132 #define ZFCP_SBAL_TIMEOUT (5*HZ) 133 134 #define ZFCP_TYPE2_RECOVERY_TIME (8*HZ) 135 136 /* queue polling (values in microseconds) */ 137 #define ZFCP_MAX_INPUT_THRESHOLD 5000 /* FIXME: tune */ 138 #define ZFCP_MAX_OUTPUT_THRESHOLD 1000 /* FIXME: tune */ 139 #define ZFCP_MIN_INPUT_THRESHOLD 1 /* ignored by QDIO layer */ 140 #define ZFCP_MIN_OUTPUT_THRESHOLD 1 /* ignored by QDIO layer */ 141 142 #define QDIO_SCSI_QFMT 1 /* 1 for FSF */ 143 144 /********************* FSF SPECIFIC DEFINES *********************************/ 145 146 #define ZFCP_ULP_INFO_VERSION 26 147 #define ZFCP_QTCB_VERSION FSF_QTCB_CURRENT_VERSION 148 /* ATTENTION: value must not be used by hardware */ 149 #define FSF_QTCB_UNSOLICITED_STATUS 0x6305 150 #define ZFCP_STATUS_READ_FAILED_THRESHOLD 3 151 #define ZFCP_STATUS_READS_RECOM FSF_STATUS_READS_RECOM 152 153 /* Do 1st retry in 1 second, then double the timeout for each following retry */ 154 #define ZFCP_EXCHANGE_CONFIG_DATA_FIRST_SLEEP 100 155 #define ZFCP_EXCHANGE_CONFIG_DATA_RETRIES 7 156 157 /* timeout value for "default timer" for fsf requests */ 158 #define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ); 159 160 /*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/ 161 162 typedef unsigned long long wwn_t; 163 typedef unsigned int fc_id_t; 164 typedef unsigned long long fcp_lun_t; 165 /* data length field may be at variable position in FCP-2 FCP_CMND IU */ 166 typedef unsigned int fcp_dl_t; 167 168 #define ZFCP_FC_SERVICE_CLASS_DEFAULT FSF_CLASS_3 169 170 /* timeout for name-server lookup (in seconds) */ 171 #define ZFCP_NS_GID_PN_TIMEOUT 10 172 173 /* largest SCSI command we can process */ 174 /* FCP-2 (FCP_CMND IU) allows up to (255-3+16) */ 175 #define ZFCP_MAX_SCSI_CMND_LENGTH 255 176 /* maximum number of commands in LUN queue (tagged queueing) */ 177 #define ZFCP_CMND_PER_LUN 32 178 179 /* task attribute values in FCP-2 FCP_CMND IU */ 180 #define SIMPLE_Q 0 181 #define HEAD_OF_Q 1 182 #define ORDERED_Q 2 183 #define ACA_Q 4 184 #define UNTAGGED 5 185 186 /* task management flags in FCP-2 FCP_CMND IU */ 187 #define FCP_CLEAR_ACA 0x40 188 #define FCP_TARGET_RESET 0x20 189 #define FCP_LOGICAL_UNIT_RESET 0x10 190 #define FCP_CLEAR_TASK_SET 0x04 191 #define FCP_ABORT_TASK_SET 0x02 192 193 #define FCP_CDB_LENGTH 16 194 195 #define ZFCP_DID_MASK 0x00FFFFFF 196 197 /* FCP(-2) FCP_CMND IU */ 198 struct fcp_cmnd_iu { 199 fcp_lun_t fcp_lun; /* FCP logical unit number */ 200 u8 crn; /* command reference number */ 201 u8 reserved0:5; /* reserved */ 202 u8 task_attribute:3; /* task attribute */ 203 u8 task_management_flags; /* task management flags */ 204 u8 add_fcp_cdb_length:6; /* additional FCP_CDB length */ 205 u8 rddata:1; /* read data */ 206 u8 wddata:1; /* write data */ 207 u8 fcp_cdb[FCP_CDB_LENGTH]; 208 } __attribute__((packed)); 209 210 /* FCP(-2) FCP_RSP IU */ 211 struct fcp_rsp_iu { 212 u8 reserved0[10]; 213 union { 214 struct { 215 u8 reserved1:3; 216 u8 fcp_conf_req:1; 217 u8 fcp_resid_under:1; 218 u8 fcp_resid_over:1; 219 u8 fcp_sns_len_valid:1; 220 u8 fcp_rsp_len_valid:1; 221 } bits; 222 u8 value; 223 } validity; 224 u8 scsi_status; 225 u32 fcp_resid; 226 u32 fcp_sns_len; 227 u32 fcp_rsp_len; 228 } __attribute__((packed)); 229 230 231 #define RSP_CODE_GOOD 0 232 #define RSP_CODE_LENGTH_MISMATCH 1 233 #define RSP_CODE_FIELD_INVALID 2 234 #define RSP_CODE_RO_MISMATCH 3 235 #define RSP_CODE_TASKMAN_UNSUPP 4 236 #define RSP_CODE_TASKMAN_FAILED 5 237 238 /* see fc-fs */ 239 #define LS_FAN 0x60000000 240 #define LS_RSCN 0x61040000 241 242 struct fcp_rscn_head { 243 u8 command; 244 u8 page_length; /* always 0x04 */ 245 u16 payload_len; 246 } __attribute__((packed)); 247 248 struct fcp_rscn_element { 249 u8 reserved:2; 250 u8 event_qual:4; 251 u8 addr_format:2; 252 u32 nport_did:24; 253 } __attribute__((packed)); 254 255 #define ZFCP_PORT_ADDRESS 0x0 256 #define ZFCP_AREA_ADDRESS 0x1 257 #define ZFCP_DOMAIN_ADDRESS 0x2 258 #define ZFCP_FABRIC_ADDRESS 0x3 259 260 #define ZFCP_PORTS_RANGE_PORT 0xFFFFFF 261 #define ZFCP_PORTS_RANGE_AREA 0xFFFF00 262 #define ZFCP_PORTS_RANGE_DOMAIN 0xFF0000 263 #define ZFCP_PORTS_RANGE_FABRIC 0x000000 264 265 #define ZFCP_NO_PORTS_PER_AREA 0x100 266 #define ZFCP_NO_PORTS_PER_DOMAIN 0x10000 267 #define ZFCP_NO_PORTS_PER_FABRIC 0x1000000 268 269 struct fcp_fan { 270 u32 command; 271 u32 fport_did; 272 wwn_t fport_wwpn; 273 wwn_t fport_wwname; 274 } __attribute__((packed)); 275 276 /* see fc-ph */ 277 struct fcp_logo { 278 u32 command; 279 u32 nport_did; 280 wwn_t nport_wwpn; 281 } __attribute__((packed)); 282 283 /* 284 * FC-FS stuff 285 */ 286 #define R_A_TOV 10 /* seconds */ 287 #define ZFCP_ELS_TIMEOUT (2 * R_A_TOV) 288 289 #define ZFCP_LS_RLS 0x0f 290 #define ZFCP_LS_ADISC 0x52 291 #define ZFCP_LS_RPS 0x56 292 #define ZFCP_LS_RSCN 0x61 293 #define ZFCP_LS_RNID 0x78 294 295 struct zfcp_ls_rjt_par { 296 u8 action; 297 u8 reason_code; 298 u8 reason_expl; 299 u8 vendor_unique; 300 } __attribute__ ((packed)); 301 302 struct zfcp_ls_adisc { 303 u8 code; 304 u8 field[3]; 305 u32 hard_nport_id; 306 u64 wwpn; 307 u64 wwnn; 308 u32 nport_id; 309 } __attribute__ ((packed)); 310 311 struct zfcp_ls_adisc_acc { 312 u8 code; 313 u8 field[3]; 314 u32 hard_nport_id; 315 u64 wwpn; 316 u64 wwnn; 317 u32 nport_id; 318 } __attribute__ ((packed)); 319 320 struct zfcp_rc_entry { 321 u8 code; 322 const char *description; 323 }; 324 325 /* 326 * FC-GS-2 stuff 327 */ 328 #define ZFCP_CT_REVISION 0x01 329 #define ZFCP_CT_DIRECTORY_SERVICE 0xFC 330 #define ZFCP_CT_NAME_SERVER 0x02 331 #define ZFCP_CT_SYNCHRONOUS 0x00 332 #define ZFCP_CT_GID_PN 0x0121 333 #define ZFCP_CT_MAX_SIZE 0x1020 334 #define ZFCP_CT_ACCEPT 0x8002 335 #define ZFCP_CT_REJECT 0x8001 336 337 /* 338 * FC-GS-4 stuff 339 */ 340 #define ZFCP_CT_TIMEOUT (3 * R_A_TOV) 341 342 343 /***************** S390 DEBUG FEATURE SPECIFIC DEFINES ***********************/ 344 345 /* debug feature entries per adapter */ 346 #define ZFCP_ERP_DBF_INDEX 1 347 #define ZFCP_ERP_DBF_AREAS 2 348 #define ZFCP_ERP_DBF_LENGTH 16 349 #define ZFCP_ERP_DBF_LEVEL 3 350 #define ZFCP_ERP_DBF_NAME "zfcperp" 351 352 #define ZFCP_CMD_DBF_INDEX 2 353 #define ZFCP_CMD_DBF_AREAS 1 354 #define ZFCP_CMD_DBF_LENGTH 8 355 #define ZFCP_CMD_DBF_LEVEL 3 356 #define ZFCP_CMD_DBF_NAME "zfcpcmd" 357 358 #define ZFCP_ABORT_DBF_INDEX 2 359 #define ZFCP_ABORT_DBF_AREAS 1 360 #define ZFCP_ABORT_DBF_LENGTH 8 361 #define ZFCP_ABORT_DBF_LEVEL 6 362 #define ZFCP_ABORT_DBF_NAME "zfcpabt" 363 364 #define ZFCP_IN_ELS_DBF_INDEX 2 365 #define ZFCP_IN_ELS_DBF_AREAS 1 366 #define ZFCP_IN_ELS_DBF_LENGTH 8 367 #define ZFCP_IN_ELS_DBF_LEVEL 6 368 #define ZFCP_IN_ELS_DBF_NAME "zfcpels" 369 370 /******************** LOGGING MACROS AND DEFINES *****************************/ 371 372 /* 373 * Logging may be applied on certain kinds of driver operations 374 * independently. Additionally, different log-levels are supported for 375 * each of these areas. 376 */ 377 378 #define ZFCP_NAME "zfcp" 379 380 /* read-only LUN sharing switch initial value */ 381 #define ZFCP_RO_LUN_SHARING_DEFAULTS 0 382 383 /* independent log areas */ 384 #define ZFCP_LOG_AREA_OTHER 0 385 #define ZFCP_LOG_AREA_SCSI 1 386 #define ZFCP_LOG_AREA_FSF 2 387 #define ZFCP_LOG_AREA_CONFIG 3 388 #define ZFCP_LOG_AREA_CIO 4 389 #define ZFCP_LOG_AREA_QDIO 5 390 #define ZFCP_LOG_AREA_ERP 6 391 #define ZFCP_LOG_AREA_FC 7 392 393 /* log level values*/ 394 #define ZFCP_LOG_LEVEL_NORMAL 0 395 #define ZFCP_LOG_LEVEL_INFO 1 396 #define ZFCP_LOG_LEVEL_DEBUG 2 397 #define ZFCP_LOG_LEVEL_TRACE 3 398 399 /* 400 * this allows removal of logging code by the preprocessor 401 * (the most detailed log level still to be compiled in is specified, 402 * higher log levels are removed) 403 */ 404 #define ZFCP_LOG_LEVEL_LIMIT ZFCP_LOG_LEVEL_TRACE 405 406 /* get "loglevel" nibble assignment */ 407 #define ZFCP_GET_LOG_VALUE(zfcp_lognibble) \ 408 ((atomic_read(&zfcp_data.loglevel) >> (zfcp_lognibble<<2)) & 0xF) 409 410 /* set "loglevel" nibble */ 411 #define ZFCP_SET_LOG_NIBBLE(value, zfcp_lognibble) \ 412 (value << (zfcp_lognibble << 2)) 413 414 /* all log-level defaults are combined to generate initial log-level */ 415 #define ZFCP_LOG_LEVEL_DEFAULTS \ 416 (ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_OTHER) | \ 417 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_SCSI) | \ 418 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FSF) | \ 419 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CONFIG) | \ 420 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_CIO) | \ 421 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_QDIO) | \ 422 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_ERP) | \ 423 ZFCP_SET_LOG_NIBBLE(ZFCP_LOG_LEVEL_NORMAL, ZFCP_LOG_AREA_FC)) 424 425 /* check whether we have the right level for logging */ 426 #define ZFCP_LOG_CHECK(level) \ 427 ((ZFCP_GET_LOG_VALUE(ZFCP_LOG_AREA)) >= level) 428 429 /* logging routine for zfcp */ 430 #define _ZFCP_LOG(fmt, args...) \ 431 printk(KERN_ERR ZFCP_NAME": %s(%d): " fmt, __FUNCTION__, \ 432 __LINE__ , ##args) 433 434 #define ZFCP_LOG(level, fmt, args...) \ 435 do { \ 436 if (ZFCP_LOG_CHECK(level)) \ 437 _ZFCP_LOG(fmt, ##args); \ 438 } while (0) 439 440 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_NORMAL 441 # define ZFCP_LOG_NORMAL(fmt, args...) 442 #else 443 # define ZFCP_LOG_NORMAL(fmt, args...) \ 444 do { \ 445 if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_NORMAL)) \ 446 printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \ 447 } while (0) 448 #endif 449 450 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_INFO 451 # define ZFCP_LOG_INFO(fmt, args...) 452 #else 453 # define ZFCP_LOG_INFO(fmt, args...) \ 454 do { \ 455 if (ZFCP_LOG_CHECK(ZFCP_LOG_LEVEL_INFO)) \ 456 printk(KERN_ERR ZFCP_NAME": " fmt, ##args); \ 457 } while (0) 458 #endif 459 460 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG 461 # define ZFCP_LOG_DEBUG(fmt, args...) 462 #else 463 # define ZFCP_LOG_DEBUG(fmt, args...) \ 464 ZFCP_LOG(ZFCP_LOG_LEVEL_DEBUG, fmt , ##args) 465 #endif 466 467 #if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_TRACE 468 # define ZFCP_LOG_TRACE(fmt, args...) 469 #else 470 # define ZFCP_LOG_TRACE(fmt, args...) \ 471 ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args) 472 #endif 473 474 /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/ 475 476 /* 477 * Note, the leftmost status byte is common among adapter, port 478 * and unit 479 */ 480 #define ZFCP_COMMON_FLAGS 0xfff00000 481 #define ZFCP_SPECIFIC_FLAGS 0x000fffff 482 483 /* common status bits */ 484 #define ZFCP_STATUS_COMMON_REMOVE 0x80000000 485 #define ZFCP_STATUS_COMMON_RUNNING 0x40000000 486 #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 487 #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 488 #define ZFCP_STATUS_COMMON_OPENING 0x08000000 489 #define ZFCP_STATUS_COMMON_OPEN 0x04000000 490 #define ZFCP_STATUS_COMMON_CLOSING 0x02000000 491 #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 492 #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 493 #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 494 495 /* adapter status */ 496 #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 497 #define ZFCP_STATUS_ADAPTER_REGISTERED 0x00000004 498 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 499 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 500 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP 0x00000020 501 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080 502 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 503 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 504 505 #define ZFCP_STATUS_ADAPTER_SCSI_UP \ 506 (ZFCP_STATUS_COMMON_UNBLOCKED | \ 507 ZFCP_STATUS_ADAPTER_REGISTERED) 508 509 510 /* FC-PH/FC-GS well-known address identifiers for generic services */ 511 #define ZFCP_DID_MANAGEMENT_SERVICE 0xFFFFFA 512 #define ZFCP_DID_TIME_SERVICE 0xFFFFFB 513 #define ZFCP_DID_DIRECTORY_SERVICE 0xFFFFFC 514 #define ZFCP_DID_ALIAS_SERVICE 0xFFFFF8 515 #define ZFCP_DID_KEY_DISTRIBUTION_SERVICE 0xFFFFF7 516 517 /* remote port status */ 518 #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 519 #define ZFCP_STATUS_PORT_DID_DID 0x00000002 520 #define ZFCP_STATUS_PORT_PHYS_CLOSING 0x00000004 521 #define ZFCP_STATUS_PORT_NO_WWPN 0x00000008 522 #define ZFCP_STATUS_PORT_NO_SCSI_ID 0x00000010 523 #define ZFCP_STATUS_PORT_INVALID_WWPN 0x00000020 524 #define ZFCP_STATUS_PORT_ACCESS_DENIED 0x00000040 525 526 /* for ports with well known addresses */ 527 #define ZFCP_STATUS_PORT_WKA \ 528 (ZFCP_STATUS_PORT_NO_WWPN | \ 529 ZFCP_STATUS_PORT_NO_SCSI_ID) 530 531 /* logical unit status */ 532 #define ZFCP_STATUS_UNIT_NOTSUPPUNITRESET 0x00000001 533 #define ZFCP_STATUS_UNIT_TEMPORARY 0x00000002 534 #define ZFCP_STATUS_UNIT_SHARED 0x00000004 535 #define ZFCP_STATUS_UNIT_READONLY 0x00000008 536 537 /* FSF request status (this does not have a common part) */ 538 #define ZFCP_STATUS_FSFREQ_NOT_INIT 0x00000000 539 #define ZFCP_STATUS_FSFREQ_POOL 0x00000001 540 #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002 541 #define ZFCP_STATUS_FSFREQ_COMPLETED 0x00000004 542 #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 543 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 544 #define ZFCP_STATUS_FSFREQ_ABORTING 0x00000020 545 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 546 #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 547 #define ZFCP_STATUS_FSFREQ_ABORTED 0x00000100 548 #define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200 549 #define ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP 0x00000400 550 #define ZFCP_STATUS_FSFREQ_RETRY 0x00000800 551 #define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000 552 553 /*********************** ERROR RECOVERY PROCEDURE DEFINES ********************/ 554 555 #define ZFCP_MAX_ERPS 3 556 557 #define ZFCP_ERP_FSFREQ_TIMEOUT (30 * HZ) 558 #define ZFCP_ERP_MEMWAIT_TIMEOUT HZ 559 560 #define ZFCP_STATUS_ERP_TIMEDOUT 0x10000000 561 #define ZFCP_STATUS_ERP_CLOSE_ONLY 0x01000000 562 #define ZFCP_STATUS_ERP_DISMISSING 0x00100000 563 #define ZFCP_STATUS_ERP_DISMISSED 0x00200000 564 #define ZFCP_STATUS_ERP_LOWMEM 0x00400000 565 566 #define ZFCP_ERP_STEP_UNINITIALIZED 0x00000000 567 #define ZFCP_ERP_STEP_FSF_XCONFIG 0x00000001 568 #define ZFCP_ERP_STEP_PHYS_PORT_CLOSING 0x00000010 569 #define ZFCP_ERP_STEP_PORT_CLOSING 0x00000100 570 #define ZFCP_ERP_STEP_NAMESERVER_OPEN 0x00000200 571 #define ZFCP_ERP_STEP_NAMESERVER_LOOKUP 0x00000400 572 #define ZFCP_ERP_STEP_PORT_OPENING 0x00000800 573 #define ZFCP_ERP_STEP_UNIT_CLOSING 0x00001000 574 #define ZFCP_ERP_STEP_UNIT_OPENING 0x00002000 575 576 /* Ordered by escalation level (necessary for proper erp-code operation) */ 577 #define ZFCP_ERP_ACTION_REOPEN_ADAPTER 0x4 578 #define ZFCP_ERP_ACTION_REOPEN_PORT_FORCED 0x3 579 #define ZFCP_ERP_ACTION_REOPEN_PORT 0x2 580 #define ZFCP_ERP_ACTION_REOPEN_UNIT 0x1 581 582 #define ZFCP_ERP_ACTION_RUNNING 0x1 583 #define ZFCP_ERP_ACTION_READY 0x2 584 585 #define ZFCP_ERP_SUCCEEDED 0x0 586 #define ZFCP_ERP_FAILED 0x1 587 #define ZFCP_ERP_CONTINUES 0x2 588 #define ZFCP_ERP_EXIT 0x3 589 #define ZFCP_ERP_DISMISSED 0x4 590 #define ZFCP_ERP_NOMEM 0x5 591 592 593 /******************** CFDC SPECIFIC STUFF *****************************/ 594 595 /* Firewall data channel sense data record */ 596 struct zfcp_cfdc_sense_data { 597 u32 signature; /* Request signature */ 598 u32 devno; /* FCP adapter device number */ 599 u32 command; /* Command code */ 600 u32 fsf_status; /* FSF request status and status qualifier */ 601 u8 fsf_status_qual[FSF_STATUS_QUALIFIER_SIZE]; 602 u8 payloads[256]; /* Access conflicts list */ 603 u8 control_file[0]; /* Access control table */ 604 }; 605 606 #define ZFCP_CFDC_SIGNATURE 0xCFDCACDF 607 608 #define ZFCP_CFDC_CMND_DOWNLOAD_NORMAL 0x00010001 609 #define ZFCP_CFDC_CMND_DOWNLOAD_FORCE 0x00010101 610 #define ZFCP_CFDC_CMND_FULL_ACCESS 0x00000201 611 #define ZFCP_CFDC_CMND_RESTRICTED_ACCESS 0x00000401 612 #define ZFCP_CFDC_CMND_UPLOAD 0x00010002 613 614 #define ZFCP_CFDC_DOWNLOAD 0x00000001 615 #define ZFCP_CFDC_UPLOAD 0x00000002 616 #define ZFCP_CFDC_WITH_CONTROL_FILE 0x00010000 617 618 #define ZFCP_CFDC_DEV_NAME "zfcp_cfdc" 619 #define ZFCP_CFDC_DEV_MAJOR MISC_MAJOR 620 #define ZFCP_CFDC_DEV_MINOR MISC_DYNAMIC_MINOR 621 622 #define ZFCP_CFDC_MAX_CONTROL_FILE_SIZE 127 * 1024 623 624 /************************* STRUCTURE DEFINITIONS *****************************/ 625 626 struct zfcp_fsf_req; 627 628 /* holds various memory pools of an adapter */ 629 struct zfcp_adapter_mempool { 630 mempool_t *fsf_req_erp; 631 mempool_t *fsf_req_scsi; 632 mempool_t *fsf_req_abort; 633 mempool_t *fsf_req_status_read; 634 mempool_t *data_status_read; 635 mempool_t *data_gid_pn; 636 }; 637 638 struct zfcp_exchange_config_data{ 639 }; 640 641 struct zfcp_open_port { 642 struct zfcp_port *port; 643 }; 644 645 struct zfcp_close_port { 646 struct zfcp_port *port; 647 }; 648 649 struct zfcp_open_unit { 650 struct zfcp_unit *unit; 651 }; 652 653 struct zfcp_close_unit { 654 struct zfcp_unit *unit; 655 }; 656 657 struct zfcp_close_physical_port { 658 struct zfcp_port *port; 659 }; 660 661 struct zfcp_send_fcp_command_task { 662 struct zfcp_fsf_req *fsf_req; 663 struct zfcp_unit *unit; 664 struct scsi_cmnd *scsi_cmnd; 665 unsigned long start_jiffies; 666 }; 667 668 struct zfcp_send_fcp_command_task_management { 669 struct zfcp_unit *unit; 670 }; 671 672 struct zfcp_abort_fcp_command { 673 struct zfcp_fsf_req *fsf_req; 674 struct zfcp_unit *unit; 675 }; 676 677 /* 678 * header for CT_IU 679 */ 680 struct ct_hdr { 681 u8 revision; // 0x01 682 u8 in_id[3]; // 0x00 683 u8 gs_type; // 0xFC Directory Service 684 u8 gs_subtype; // 0x02 Name Server 685 u8 options; // 0x00 single bidirectional exchange 686 u8 reserved0; 687 u16 cmd_rsp_code; // 0x0121 GID_PN, or 0x0100 GA_NXT 688 u16 max_res_size; // <= (4096 - 16) / 4 689 u8 reserved1; 690 u8 reason_code; 691 u8 reason_code_expl; 692 u8 vendor_unique; 693 } __attribute__ ((packed)); 694 695 /* nameserver request CT_IU -- for requests where 696 * a port name is required */ 697 struct ct_iu_gid_pn_req { 698 struct ct_hdr header; 699 wwn_t wwpn; 700 } __attribute__ ((packed)); 701 702 /* FS_ACC IU and data unit for GID_PN nameserver request */ 703 struct ct_iu_gid_pn_resp { 704 struct ct_hdr header; 705 fc_id_t d_id; 706 } __attribute__ ((packed)); 707 708 typedef void (*zfcp_send_ct_handler_t)(unsigned long); 709 710 /** 711 * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct 712 * @port: port where the request is sent to 713 * @req: scatter-gather list for request 714 * @resp: scatter-gather list for response 715 * @req_count: number of elements in request scatter-gather list 716 * @resp_count: number of elements in response scatter-gather list 717 * @handler: handler function (called for response to the request) 718 * @handler_data: data passed to handler function 719 * @pool: pointer to memory pool for ct request structure 720 * @timeout: FSF timeout for this request 721 * @timer: timer (e.g. for request initiated by erp) 722 * @completion: completion for synchronization purposes 723 * @status: used to pass error status to calling function 724 */ 725 struct zfcp_send_ct { 726 struct zfcp_port *port; 727 struct scatterlist *req; 728 struct scatterlist *resp; 729 unsigned int req_count; 730 unsigned int resp_count; 731 zfcp_send_ct_handler_t handler; 732 unsigned long handler_data; 733 mempool_t *pool; 734 int timeout; 735 struct timer_list *timer; 736 struct completion *completion; 737 int status; 738 }; 739 740 /* used for name server requests in error recovery */ 741 struct zfcp_gid_pn_data { 742 struct zfcp_send_ct ct; 743 struct scatterlist req; 744 struct scatterlist resp; 745 struct ct_iu_gid_pn_req ct_iu_req; 746 struct ct_iu_gid_pn_resp ct_iu_resp; 747 struct zfcp_port *port; 748 }; 749 750 typedef void (*zfcp_send_els_handler_t)(unsigned long); 751 752 /** 753 * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els 754 * @adapter: adapter where request is sent from 755 * @port: port where ELS is destinated (port reference count has to be increased) 756 * @d_id: destiniation id of port where request is sent to 757 * @req: scatter-gather list for request 758 * @resp: scatter-gather list for response 759 * @req_count: number of elements in request scatter-gather list 760 * @resp_count: number of elements in response scatter-gather list 761 * @handler: handler function (called for response to the request) 762 * @handler_data: data passed to handler function 763 * @timer: timer (e.g. for request initiated by erp) 764 * @completion: completion for synchronization purposes 765 * @ls_code: hex code of ELS command 766 * @status: used to pass error status to calling function 767 */ 768 struct zfcp_send_els { 769 struct zfcp_adapter *adapter; 770 struct zfcp_port *port; 771 fc_id_t d_id; 772 struct scatterlist *req; 773 struct scatterlist *resp; 774 unsigned int req_count; 775 unsigned int resp_count; 776 zfcp_send_els_handler_t handler; 777 unsigned long handler_data; 778 struct timer_list *timer; 779 struct completion *completion; 780 int ls_code; 781 int status; 782 }; 783 784 struct zfcp_status_read { 785 struct fsf_status_read_buffer *buffer; 786 }; 787 788 struct zfcp_fsf_done { 789 struct completion *complete; 790 int status; 791 }; 792 793 /* request specific data */ 794 union zfcp_req_data { 795 struct zfcp_exchange_config_data exchange_config_data; 796 struct zfcp_open_port open_port; 797 struct zfcp_close_port close_port; 798 struct zfcp_open_unit open_unit; 799 struct zfcp_close_unit close_unit; 800 struct zfcp_close_physical_port close_physical_port; 801 struct zfcp_send_fcp_command_task send_fcp_command_task; 802 struct zfcp_send_fcp_command_task_management 803 send_fcp_command_task_management; 804 struct zfcp_abort_fcp_command abort_fcp_command; 805 struct zfcp_send_ct *send_ct; 806 struct zfcp_send_els *send_els; 807 struct zfcp_status_read status_read; 808 struct fsf_qtcb_bottom_port *port_data; 809 }; 810 811 struct zfcp_qdio_queue { 812 struct qdio_buffer *buffer[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ 813 u8 free_index; /* index of next free bfr 814 in queue (free_count>0) */ 815 atomic_t free_count; /* number of free buffers 816 in queue */ 817 rwlock_t queue_lock; /* lock for operations on queue */ 818 int distance_from_int; /* SBALs used since PCI indication 819 was last set */ 820 }; 821 822 struct zfcp_erp_action { 823 struct list_head list; 824 int action; /* requested action code */ 825 struct zfcp_adapter *adapter; /* device which should be recovered */ 826 struct zfcp_port *port; 827 struct zfcp_unit *unit; 828 volatile u32 status; /* recovery status */ 829 u32 step; /* active step of this erp action */ 830 struct zfcp_fsf_req *fsf_req; /* fsf request currently pending 831 for this action */ 832 struct timer_list timer; 833 }; 834 835 836 struct zfcp_adapter { 837 struct list_head list; /* list of adapters */ 838 atomic_t refcount; /* reference count */ 839 wait_queue_head_t remove_wq; /* can be used to wait for 840 refcount drop to zero */ 841 wwn_t wwnn; /* WWNN */ 842 wwn_t wwpn; /* WWPN */ 843 fc_id_t s_id; /* N_Port ID */ 844 wwn_t peer_wwnn; /* P2P peer WWNN */ 845 wwn_t peer_wwpn; /* P2P peer WWPN */ 846 fc_id_t peer_d_id; /* P2P peer D_ID */ 847 struct ccw_device *ccw_device; /* S/390 ccw device */ 848 u8 fc_service_class; 849 u32 fc_topology; /* FC topology */ 850 u32 fc_link_speed; /* FC interface speed */ 851 u32 hydra_version; /* Hydra version */ 852 u32 fsf_lic_version; 853 u32 supported_features;/* of FCP channel */ 854 u32 hardware_version; /* of FCP channel */ 855 u8 serial_number[32]; /* of hardware */ 856 struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ 857 unsigned short scsi_host_no; /* Assigned host number */ 858 unsigned char name[9]; 859 struct list_head port_list_head; /* remote port list */ 860 struct list_head port_remove_lh; /* head of ports to be 861 removed */ 862 u32 ports; /* number of remote ports */ 863 struct timer_list scsi_er_timer; /* SCSI err recovery watch */ 864 struct list_head fsf_req_list_head; /* head of FSF req list */ 865 spinlock_t fsf_req_list_lock; /* lock for ops on list of 866 FSF requests */ 867 atomic_t fsf_reqs_active; /* # active FSF reqs */ 868 struct zfcp_qdio_queue request_queue; /* request queue */ 869 u32 fsf_req_seq_no; /* FSF cmnd seq number */ 870 wait_queue_head_t request_wq; /* can be used to wait for 871 more avaliable SBALs */ 872 struct zfcp_qdio_queue response_queue; /* response queue */ 873 rwlock_t abort_lock; /* Protects against SCSI 874 stack abort/command 875 completion races */ 876 u16 status_read_failed; /* # failed status reads */ 877 atomic_t status; /* status of this adapter */ 878 struct list_head erp_ready_head; /* error recovery for this 879 adapter/devices */ 880 struct list_head erp_running_head; 881 rwlock_t erp_lock; 882 struct semaphore erp_ready_sem; 883 wait_queue_head_t erp_thread_wqh; 884 wait_queue_head_t erp_done_wqh; 885 struct zfcp_erp_action erp_action; /* pending error recovery */ 886 atomic_t erp_counter; 887 u32 erp_total_count; /* total nr of enqueued erp 888 actions */ 889 u32 erp_low_mem_count; /* nr of erp actions waiting 890 for memory */ 891 struct zfcp_port *nameserver_port; /* adapter's nameserver */ 892 debug_info_t *erp_dbf; /* S/390 debug features */ 893 debug_info_t *abort_dbf; 894 debug_info_t *in_els_dbf; 895 debug_info_t *cmd_dbf; 896 spinlock_t dbf_lock; 897 struct zfcp_adapter_mempool pool; /* Adapter memory pools */ 898 struct qdio_initialize qdio_init_data; /* for qdio_establish */ 899 struct device generic_services; /* directory for WKA ports */ 900 }; 901 902 /* 903 * the struct device sysfs_device must be at the beginning of this structure. 904 * pointer to struct device is used to free port structure in release function 905 * of the device. don't change! 906 */ 907 struct zfcp_port { 908 struct device sysfs_device; /* sysfs device */ 909 struct fc_rport *rport; /* rport of fc transport class */ 910 struct list_head list; /* list of remote ports */ 911 atomic_t refcount; /* reference count */ 912 wait_queue_head_t remove_wq; /* can be used to wait for 913 refcount drop to zero */ 914 struct zfcp_adapter *adapter; /* adapter used to access port */ 915 struct list_head unit_list_head; /* head of logical unit list */ 916 struct list_head unit_remove_lh; /* head of luns to be removed 917 list */ 918 u32 units; /* # of logical units in list */ 919 atomic_t status; /* status of this remote port */ 920 wwn_t wwnn; /* WWNN if known */ 921 wwn_t wwpn; /* WWPN */ 922 fc_id_t d_id; /* D_ID */ 923 u32 handle; /* handle assigned by FSF */ 924 struct zfcp_erp_action erp_action; /* pending error recovery */ 925 atomic_t erp_counter; 926 }; 927 928 /* the struct device sysfs_device must be at the beginning of this structure. 929 * pointer to struct device is used to free unit structure in release function 930 * of the device. don't change! 931 */ 932 struct zfcp_unit { 933 struct device sysfs_device; /* sysfs device */ 934 struct list_head list; /* list of logical units */ 935 atomic_t refcount; /* reference count */ 936 wait_queue_head_t remove_wq; /* can be used to wait for 937 refcount drop to zero */ 938 struct zfcp_port *port; /* remote port of unit */ 939 atomic_t status; /* status of this logical unit */ 940 scsi_lun_t scsi_lun; /* own SCSI LUN */ 941 fcp_lun_t fcp_lun; /* own FCP_LUN */ 942 u32 handle; /* handle assigned by FSF */ 943 struct scsi_device *device; /* scsi device struct pointer */ 944 struct zfcp_erp_action erp_action; /* pending error recovery */ 945 atomic_t erp_counter; 946 }; 947 948 /* FSF request */ 949 struct zfcp_fsf_req { 950 struct list_head list; /* list of FSF requests */ 951 struct zfcp_adapter *adapter; /* adapter request belongs to */ 952 u8 sbal_number; /* nr of SBALs free for use */ 953 u8 sbal_first; /* first SBAL for this request */ 954 u8 sbal_last; /* last possible SBAL for 955 this reuest */ 956 u8 sbal_curr; /* current SBAL during creation 957 of request */ 958 u8 sbale_curr; /* current SBALE during creation 959 of request */ 960 wait_queue_head_t completion_wq; /* can be used by a routine 961 to wait for completion */ 962 volatile u32 status; /* status of this request */ 963 u32 fsf_command; /* FSF Command copy */ 964 struct fsf_qtcb *qtcb; /* address of associated QTCB */ 965 u32 seq_no; /* Sequence number of request */ 966 union zfcp_req_data data; /* Info fields of request */ 967 struct zfcp_erp_action *erp_action; /* used if this request is 968 issued on behalf of erp */ 969 mempool_t *pool; /* used if request was alloacted 970 from emergency pool */ 971 }; 972 973 typedef void zfcp_fsf_req_handler_t(struct zfcp_fsf_req*); 974 975 /* driver data */ 976 struct zfcp_data { 977 struct scsi_host_template scsi_host_template; 978 atomic_t status; /* Module status flags */ 979 struct list_head adapter_list_head; /* head of adapter list */ 980 struct list_head adapter_remove_lh; /* head of adapters to be 981 removed */ 982 rwlock_t status_read_lock; /* for status read thread */ 983 struct list_head status_read_receive_head; 984 struct list_head status_read_send_head; 985 struct semaphore status_read_sema; 986 wait_queue_head_t status_read_thread_wqh; 987 u32 adapters; /* # of adapters in list */ 988 rwlock_t config_lock; /* serialises changes 989 to adapter/port/unit 990 lists */ 991 struct semaphore config_sema; /* serialises configuration 992 changes */ 993 atomic_t loglevel; /* current loglevel */ 994 char init_busid[BUS_ID_SIZE]; 995 wwn_t init_wwpn; 996 fcp_lun_t init_fcp_lun; 997 char *driver_version; 998 }; 999 1000 /** 1001 * struct zfcp_sg_list - struct describing a scatter-gather list 1002 * @sg: pointer to array of (struct scatterlist) 1003 * @count: number of elements in scatter-gather list 1004 */ 1005 struct zfcp_sg_list { 1006 struct scatterlist *sg; 1007 unsigned int count; 1008 }; 1009 1010 /* number of elements for various memory pools */ 1011 #define ZFCP_POOL_FSF_REQ_ERP_NR 1 1012 #define ZFCP_POOL_FSF_REQ_SCSI_NR 1 1013 #define ZFCP_POOL_FSF_REQ_ABORT_NR 1 1014 #define ZFCP_POOL_STATUS_READ_NR ZFCP_STATUS_READS_RECOM 1015 #define ZFCP_POOL_DATA_GID_PN_NR 1 1016 1017 /* struct used by memory pools for fsf_requests */ 1018 struct zfcp_fsf_req_pool_element { 1019 struct zfcp_fsf_req fsf_req; 1020 struct fsf_qtcb qtcb; 1021 }; 1022 1023 /********************** ZFCP SPECIFIC DEFINES ********************************/ 1024 1025 #define ZFCP_FSFREQ_CLEANUP_TIMEOUT HZ/10 1026 1027 #define ZFCP_KNOWN 0x00000001 1028 #define ZFCP_REQ_AUTO_CLEANUP 0x00000002 1029 #define ZFCP_WAIT_FOR_SBAL 0x00000004 1030 #define ZFCP_REQ_NO_QTCB 0x00000008 1031 1032 #define ZFCP_SET 0x00000100 1033 #define ZFCP_CLEAR 0x00000200 1034 1035 #define ZFCP_INTERRUPTIBLE 1 1036 #define ZFCP_UNINTERRUPTIBLE 0 1037 1038 #ifndef atomic_test_mask 1039 #define atomic_test_mask(mask, target) \ 1040 ((atomic_read(target) & mask) == mask) 1041 #endif 1042 1043 extern void _zfcp_hex_dump(char *, int); 1044 #define ZFCP_HEX_DUMP(level, addr, count) \ 1045 if (ZFCP_LOG_CHECK(level)) { \ 1046 _zfcp_hex_dump(addr, count); \ 1047 } 1048 1049 #define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id) 1050 #define zfcp_get_busid_by_port(port) (zfcp_get_busid_by_adapter(port->adapter)) 1051 #define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port)) 1052 1053 /* 1054 * functions needed for reference/usage counting 1055 */ 1056 1057 static inline void 1058 zfcp_unit_get(struct zfcp_unit *unit) 1059 { 1060 atomic_inc(&unit->refcount); 1061 } 1062 1063 static inline void 1064 zfcp_unit_put(struct zfcp_unit *unit) 1065 { 1066 if (atomic_dec_return(&unit->refcount) == 0) 1067 wake_up(&unit->remove_wq); 1068 } 1069 1070 static inline void 1071 zfcp_unit_wait(struct zfcp_unit *unit) 1072 { 1073 wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0); 1074 } 1075 1076 static inline void 1077 zfcp_port_get(struct zfcp_port *port) 1078 { 1079 atomic_inc(&port->refcount); 1080 } 1081 1082 static inline void 1083 zfcp_port_put(struct zfcp_port *port) 1084 { 1085 if (atomic_dec_return(&port->refcount) == 0) 1086 wake_up(&port->remove_wq); 1087 } 1088 1089 static inline void 1090 zfcp_port_wait(struct zfcp_port *port) 1091 { 1092 wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); 1093 } 1094 1095 static inline void 1096 zfcp_adapter_get(struct zfcp_adapter *adapter) 1097 { 1098 atomic_inc(&adapter->refcount); 1099 } 1100 1101 static inline void 1102 zfcp_adapter_put(struct zfcp_adapter *adapter) 1103 { 1104 if (atomic_dec_return(&adapter->refcount) == 0) 1105 wake_up(&adapter->remove_wq); 1106 } 1107 1108 static inline void 1109 zfcp_adapter_wait(struct zfcp_adapter *adapter) 1110 { 1111 wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); 1112 } 1113 1114 #endif /* ZFCP_DEF_H */ 1115