1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Helper functions for scsw access. 4 * 5 * Copyright IBM Corp. 2008, 2012 6 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> 7 */ 8 9 #ifndef _ASM_S390_SCSW_H_ 10 #define _ASM_S390_SCSW_H_ 11 12 #include <linux/types.h> 13 #include <asm/css_chars.h> 14 #include <asm/cio.h> 15 16 /** 17 * struct cmd_scsw - command-mode subchannel status word 18 * @key: subchannel key 19 * @sctl: suspend control 20 * @eswf: esw format 21 * @cc: deferred condition code 22 * @fmt: format 23 * @pfch: prefetch 24 * @isic: initial-status interruption control 25 * @alcc: address-limit checking control 26 * @ssi: suppress-suspended interruption 27 * @zcc: zero condition code 28 * @ectl: extended control 29 * @pno: path not operational 30 * @res: reserved 31 * @fctl: function control 32 * @actl: activity control 33 * @stctl: status control 34 * @cpa: channel program address 35 * @dstat: device status 36 * @cstat: subchannel status 37 * @count: residual count 38 */ 39 struct cmd_scsw { 40 __u32 key : 4; 41 __u32 sctl : 1; 42 __u32 eswf : 1; 43 __u32 cc : 2; 44 __u32 fmt : 1; 45 __u32 pfch : 1; 46 __u32 isic : 1; 47 __u32 alcc : 1; 48 __u32 ssi : 1; 49 __u32 zcc : 1; 50 __u32 ectl : 1; 51 __u32 pno : 1; 52 __u32 res : 1; 53 __u32 fctl : 3; 54 __u32 actl : 7; 55 __u32 stctl : 5; 56 __u32 cpa; 57 __u32 dstat : 8; 58 __u32 cstat : 8; 59 __u32 count : 16; 60 } __attribute__ ((packed)); 61 62 /** 63 * struct tm_scsw - transport-mode subchannel status word 64 * @key: subchannel key 65 * @eswf: esw format 66 * @cc: deferred condition code 67 * @fmt: format 68 * @x: IRB-format control 69 * @q: interrogate-complete 70 * @ectl: extended control 71 * @pno: path not operational 72 * @fctl: function control 73 * @actl: activity control 74 * @stctl: status control 75 * @tcw: TCW address 76 * @dstat: device status 77 * @cstat: subchannel status 78 * @fcxs: FCX status 79 * @schxs: subchannel-extended status 80 */ 81 struct tm_scsw { 82 u32 key:4; 83 u32 :1; 84 u32 eswf:1; 85 u32 cc:2; 86 u32 fmt:3; 87 u32 x:1; 88 u32 q:1; 89 u32 :1; 90 u32 ectl:1; 91 u32 pno:1; 92 u32 :1; 93 u32 fctl:3; 94 u32 actl:7; 95 u32 stctl:5; 96 u32 tcw; 97 u32 dstat:8; 98 u32 cstat:8; 99 u32 fcxs:8; 100 u32 ifob:1; 101 u32 sesq:7; 102 } __attribute__ ((packed)); 103 104 /** 105 * struct eadm_scsw - subchannel status word for eadm subchannels 106 * @key: subchannel key 107 * @eswf: esw format 108 * @cc: deferred condition code 109 * @ectl: extended control 110 * @fctl: function control 111 * @actl: activity control 112 * @stctl: status control 113 * @aob: AOB address 114 * @dstat: device status 115 * @cstat: subchannel status 116 */ 117 struct eadm_scsw { 118 u32 key:4; 119 u32:1; 120 u32 eswf:1; 121 u32 cc:2; 122 u32:6; 123 u32 ectl:1; 124 u32:2; 125 u32 fctl:3; 126 u32 actl:7; 127 u32 stctl:5; 128 u32 aob; 129 u32 dstat:8; 130 u32 cstat:8; 131 u32:16; 132 } __packed; 133 134 /** 135 * union scsw - subchannel status word 136 * @cmd: command-mode SCSW 137 * @tm: transport-mode SCSW 138 * @eadm: eadm SCSW 139 */ 140 union scsw { 141 struct cmd_scsw cmd; 142 struct tm_scsw tm; 143 struct eadm_scsw eadm; 144 } __packed; 145 146 #define SCSW_FCTL_CLEAR_FUNC 0x1 147 #define SCSW_FCTL_HALT_FUNC 0x2 148 #define SCSW_FCTL_START_FUNC 0x4 149 150 #define SCSW_ACTL_SUSPENDED 0x1 151 #define SCSW_ACTL_DEVACT 0x2 152 #define SCSW_ACTL_SCHACT 0x4 153 #define SCSW_ACTL_CLEAR_PEND 0x8 154 #define SCSW_ACTL_HALT_PEND 0x10 155 #define SCSW_ACTL_START_PEND 0x20 156 #define SCSW_ACTL_RESUME_PEND 0x40 157 158 #define SCSW_STCTL_STATUS_PEND 0x1 159 #define SCSW_STCTL_SEC_STATUS 0x2 160 #define SCSW_STCTL_PRIM_STATUS 0x4 161 #define SCSW_STCTL_INTER_STATUS 0x8 162 #define SCSW_STCTL_ALERT_STATUS 0x10 163 164 #define DEV_STAT_ATTENTION 0x80 165 #define DEV_STAT_STAT_MOD 0x40 166 #define DEV_STAT_CU_END 0x20 167 #define DEV_STAT_BUSY 0x10 168 #define DEV_STAT_CHN_END 0x08 169 #define DEV_STAT_DEV_END 0x04 170 #define DEV_STAT_UNIT_CHECK 0x02 171 #define DEV_STAT_UNIT_EXCEP 0x01 172 173 #define SCHN_STAT_PCI 0x80 174 #define SCHN_STAT_INCORR_LEN 0x40 175 #define SCHN_STAT_PROG_CHECK 0x20 176 #define SCHN_STAT_PROT_CHECK 0x10 177 #define SCHN_STAT_CHN_DATA_CHK 0x08 178 #define SCHN_STAT_CHN_CTRL_CHK 0x04 179 #define SCHN_STAT_INTF_CTRL_CHK 0x02 180 #define SCHN_STAT_CHAIN_CHECK 0x01 181 182 #define SCSW_SESQ_DEV_NOFCX 3 183 #define SCSW_SESQ_PATH_NOFCX 4 184 185 /* 186 * architectured values for first sense byte 187 */ 188 #define SNS0_CMD_REJECT 0x80 189 #define SNS_CMD_REJECT SNS0_CMD_REJEC 190 #define SNS0_INTERVENTION_REQ 0x40 191 #define SNS0_BUS_OUT_CHECK 0x20 192 #define SNS0_EQUIPMENT_CHECK 0x10 193 #define SNS0_DATA_CHECK 0x08 194 #define SNS0_OVERRUN 0x04 195 #define SNS0_INCOMPL_DOMAIN 0x01 196 197 /* 198 * architectured values for second sense byte 199 */ 200 #define SNS1_PERM_ERR 0x80 201 #define SNS1_INV_TRACK_FORMAT 0x40 202 #define SNS1_EOC 0x20 203 #define SNS1_MESSAGE_TO_OPER 0x10 204 #define SNS1_NO_REC_FOUND 0x08 205 #define SNS1_FILE_PROTECTED 0x04 206 #define SNS1_WRITE_INHIBITED 0x02 207 #define SNS1_INPRECISE_END 0x01 208 209 /* 210 * architectured values for third sense byte 211 */ 212 #define SNS2_REQ_INH_WRITE 0x80 213 #define SNS2_CORRECTABLE 0x40 214 #define SNS2_FIRST_LOG_ERR 0x20 215 #define SNS2_ENV_DATA_PRESENT 0x10 216 #define SNS2_INPRECISE_END 0x04 217 218 /** 219 * scsw_is_tm - check for transport mode scsw 220 * @scsw: pointer to scsw 221 * 222 * Return non-zero if the specified scsw is a transport mode scsw, zero 223 * otherwise. 224 */ 225 static inline int scsw_is_tm(union scsw *scsw) 226 { 227 return css_general_characteristics.fcx && (scsw->tm.x == 1); 228 } 229 230 /** 231 * scsw_key - return scsw key field 232 * @scsw: pointer to scsw 233 * 234 * Return the value of the key field of the specified scsw, regardless of 235 * whether it is a transport mode or command mode scsw. 236 */ 237 static inline u32 scsw_key(union scsw *scsw) 238 { 239 if (scsw_is_tm(scsw)) 240 return scsw->tm.key; 241 else 242 return scsw->cmd.key; 243 } 244 245 /** 246 * scsw_eswf - return scsw eswf field 247 * @scsw: pointer to scsw 248 * 249 * Return the value of the eswf field of the specified scsw, regardless of 250 * whether it is a transport mode or command mode scsw. 251 */ 252 static inline u32 scsw_eswf(union scsw *scsw) 253 { 254 if (scsw_is_tm(scsw)) 255 return scsw->tm.eswf; 256 else 257 return scsw->cmd.eswf; 258 } 259 260 /** 261 * scsw_cc - return scsw cc field 262 * @scsw: pointer to scsw 263 * 264 * Return the value of the cc field of the specified scsw, regardless of 265 * whether it is a transport mode or command mode scsw. 266 */ 267 static inline u32 scsw_cc(union scsw *scsw) 268 { 269 if (scsw_is_tm(scsw)) 270 return scsw->tm.cc; 271 else 272 return scsw->cmd.cc; 273 } 274 275 /** 276 * scsw_ectl - return scsw ectl field 277 * @scsw: pointer to scsw 278 * 279 * Return the value of the ectl field of the specified scsw, regardless of 280 * whether it is a transport mode or command mode scsw. 281 */ 282 static inline u32 scsw_ectl(union scsw *scsw) 283 { 284 if (scsw_is_tm(scsw)) 285 return scsw->tm.ectl; 286 else 287 return scsw->cmd.ectl; 288 } 289 290 /** 291 * scsw_pno - return scsw pno field 292 * @scsw: pointer to scsw 293 * 294 * Return the value of the pno field of the specified scsw, regardless of 295 * whether it is a transport mode or command mode scsw. 296 */ 297 static inline u32 scsw_pno(union scsw *scsw) 298 { 299 if (scsw_is_tm(scsw)) 300 return scsw->tm.pno; 301 else 302 return scsw->cmd.pno; 303 } 304 305 /** 306 * scsw_fctl - return scsw fctl field 307 * @scsw: pointer to scsw 308 * 309 * Return the value of the fctl field of the specified scsw, regardless of 310 * whether it is a transport mode or command mode scsw. 311 */ 312 static inline u32 scsw_fctl(union scsw *scsw) 313 { 314 if (scsw_is_tm(scsw)) 315 return scsw->tm.fctl; 316 else 317 return scsw->cmd.fctl; 318 } 319 320 /** 321 * scsw_actl - return scsw actl field 322 * @scsw: pointer to scsw 323 * 324 * Return the value of the actl field of the specified scsw, regardless of 325 * whether it is a transport mode or command mode scsw. 326 */ 327 static inline u32 scsw_actl(union scsw *scsw) 328 { 329 if (scsw_is_tm(scsw)) 330 return scsw->tm.actl; 331 else 332 return scsw->cmd.actl; 333 } 334 335 /** 336 * scsw_stctl - return scsw stctl field 337 * @scsw: pointer to scsw 338 * 339 * Return the value of the stctl field of the specified scsw, regardless of 340 * whether it is a transport mode or command mode scsw. 341 */ 342 static inline u32 scsw_stctl(union scsw *scsw) 343 { 344 if (scsw_is_tm(scsw)) 345 return scsw->tm.stctl; 346 else 347 return scsw->cmd.stctl; 348 } 349 350 /** 351 * scsw_dstat - return scsw dstat field 352 * @scsw: pointer to scsw 353 * 354 * Return the value of the dstat field of the specified scsw, regardless of 355 * whether it is a transport mode or command mode scsw. 356 */ 357 static inline u32 scsw_dstat(union scsw *scsw) 358 { 359 if (scsw_is_tm(scsw)) 360 return scsw->tm.dstat; 361 else 362 return scsw->cmd.dstat; 363 } 364 365 /** 366 * scsw_cstat - return scsw cstat field 367 * @scsw: pointer to scsw 368 * 369 * Return the value of the cstat field of the specified scsw, regardless of 370 * whether it is a transport mode or command mode scsw. 371 */ 372 static inline u32 scsw_cstat(union scsw *scsw) 373 { 374 if (scsw_is_tm(scsw)) 375 return scsw->tm.cstat; 376 else 377 return scsw->cmd.cstat; 378 } 379 380 /** 381 * scsw_cmd_is_valid_key - check key field validity 382 * @scsw: pointer to scsw 383 * 384 * Return non-zero if the key field of the specified command mode scsw is 385 * valid, zero otherwise. 386 */ 387 static inline int scsw_cmd_is_valid_key(union scsw *scsw) 388 { 389 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); 390 } 391 392 /** 393 * scsw_cmd_is_valid_sctl - check sctl field validity 394 * @scsw: pointer to scsw 395 * 396 * Return non-zero if the sctl field of the specified command mode scsw is 397 * valid, zero otherwise. 398 */ 399 static inline int scsw_cmd_is_valid_sctl(union scsw *scsw) 400 { 401 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); 402 } 403 404 /** 405 * scsw_cmd_is_valid_eswf - check eswf field validity 406 * @scsw: pointer to scsw 407 * 408 * Return non-zero if the eswf field of the specified command mode scsw is 409 * valid, zero otherwise. 410 */ 411 static inline int scsw_cmd_is_valid_eswf(union scsw *scsw) 412 { 413 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); 414 } 415 416 /** 417 * scsw_cmd_is_valid_cc - check cc field validity 418 * @scsw: pointer to scsw 419 * 420 * Return non-zero if the cc field of the specified command mode scsw is 421 * valid, zero otherwise. 422 */ 423 static inline int scsw_cmd_is_valid_cc(union scsw *scsw) 424 { 425 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && 426 (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); 427 } 428 429 /** 430 * scsw_cmd_is_valid_fmt - check fmt field validity 431 * @scsw: pointer to scsw 432 * 433 * Return non-zero if the fmt field of the specified command mode scsw is 434 * valid, zero otherwise. 435 */ 436 static inline int scsw_cmd_is_valid_fmt(union scsw *scsw) 437 { 438 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); 439 } 440 441 /** 442 * scsw_cmd_is_valid_pfch - check pfch field validity 443 * @scsw: pointer to scsw 444 * 445 * Return non-zero if the pfch field of the specified command mode scsw is 446 * valid, zero otherwise. 447 */ 448 static inline int scsw_cmd_is_valid_pfch(union scsw *scsw) 449 { 450 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); 451 } 452 453 /** 454 * scsw_cmd_is_valid_isic - check isic field validity 455 * @scsw: pointer to scsw 456 * 457 * Return non-zero if the isic field of the specified command mode scsw is 458 * valid, zero otherwise. 459 */ 460 static inline int scsw_cmd_is_valid_isic(union scsw *scsw) 461 { 462 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); 463 } 464 465 /** 466 * scsw_cmd_is_valid_alcc - check alcc field validity 467 * @scsw: pointer to scsw 468 * 469 * Return non-zero if the alcc field of the specified command mode scsw is 470 * valid, zero otherwise. 471 */ 472 static inline int scsw_cmd_is_valid_alcc(union scsw *scsw) 473 { 474 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); 475 } 476 477 /** 478 * scsw_cmd_is_valid_ssi - check ssi field validity 479 * @scsw: pointer to scsw 480 * 481 * Return non-zero if the ssi field of the specified command mode scsw is 482 * valid, zero otherwise. 483 */ 484 static inline int scsw_cmd_is_valid_ssi(union scsw *scsw) 485 { 486 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); 487 } 488 489 /** 490 * scsw_cmd_is_valid_zcc - check zcc field validity 491 * @scsw: pointer to scsw 492 * 493 * Return non-zero if the zcc field of the specified command mode scsw is 494 * valid, zero otherwise. 495 */ 496 static inline int scsw_cmd_is_valid_zcc(union scsw *scsw) 497 { 498 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && 499 (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS); 500 } 501 502 /** 503 * scsw_cmd_is_valid_ectl - check ectl field validity 504 * @scsw: pointer to scsw 505 * 506 * Return non-zero if the ectl field of the specified command mode scsw is 507 * valid, zero otherwise. 508 */ 509 static inline int scsw_cmd_is_valid_ectl(union scsw *scsw) 510 { 511 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && 512 !(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) && 513 (scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS); 514 } 515 516 /** 517 * scsw_cmd_is_valid_pno - check pno field validity 518 * @scsw: pointer to scsw 519 * 520 * Return non-zero if the pno field of the specified command mode scsw is 521 * valid, zero otherwise. 522 */ 523 static inline int scsw_cmd_is_valid_pno(union scsw *scsw) 524 { 525 return (scsw->cmd.fctl != 0) && 526 (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && 527 (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) || 528 (scsw->cmd.actl & SCSW_ACTL_SUSPENDED)); 529 } 530 531 /** 532 * scsw_cmd_is_valid_fctl - check fctl field validity 533 * @scsw: pointer to scsw 534 * 535 * Return non-zero if the fctl field of the specified command mode scsw is 536 * valid, zero otherwise. 537 */ 538 static inline int scsw_cmd_is_valid_fctl(union scsw *scsw) 539 { 540 /* Only valid if pmcw.dnv == 1*/ 541 return 1; 542 } 543 544 /** 545 * scsw_cmd_is_valid_actl - check actl field validity 546 * @scsw: pointer to scsw 547 * 548 * Return non-zero if the actl field of the specified command mode scsw is 549 * valid, zero otherwise. 550 */ 551 static inline int scsw_cmd_is_valid_actl(union scsw *scsw) 552 { 553 /* Only valid if pmcw.dnv == 1*/ 554 return 1; 555 } 556 557 /** 558 * scsw_cmd_is_valid_stctl - check stctl field validity 559 * @scsw: pointer to scsw 560 * 561 * Return non-zero if the stctl field of the specified command mode scsw is 562 * valid, zero otherwise. 563 */ 564 static inline int scsw_cmd_is_valid_stctl(union scsw *scsw) 565 { 566 /* Only valid if pmcw.dnv == 1*/ 567 return 1; 568 } 569 570 /** 571 * scsw_cmd_is_valid_dstat - check dstat field validity 572 * @scsw: pointer to scsw 573 * 574 * Return non-zero if the dstat field of the specified command mode scsw is 575 * valid, zero otherwise. 576 */ 577 static inline int scsw_cmd_is_valid_dstat(union scsw *scsw) 578 { 579 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && 580 (scsw->cmd.cc != 3); 581 } 582 583 /** 584 * scsw_cmd_is_valid_cstat - check cstat field validity 585 * @scsw: pointer to scsw 586 * 587 * Return non-zero if the cstat field of the specified command mode scsw is 588 * valid, zero otherwise. 589 */ 590 static inline int scsw_cmd_is_valid_cstat(union scsw *scsw) 591 { 592 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && 593 (scsw->cmd.cc != 3); 594 } 595 596 /** 597 * scsw_tm_is_valid_key - check key field validity 598 * @scsw: pointer to scsw 599 * 600 * Return non-zero if the key field of the specified transport mode scsw is 601 * valid, zero otherwise. 602 */ 603 static inline int scsw_tm_is_valid_key(union scsw *scsw) 604 { 605 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC); 606 } 607 608 /** 609 * scsw_tm_is_valid_eswf - check eswf field validity 610 * @scsw: pointer to scsw 611 * 612 * Return non-zero if the eswf field of the specified transport mode scsw is 613 * valid, zero otherwise. 614 */ 615 static inline int scsw_tm_is_valid_eswf(union scsw *scsw) 616 { 617 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); 618 } 619 620 /** 621 * scsw_tm_is_valid_cc - check cc field validity 622 * @scsw: pointer to scsw 623 * 624 * Return non-zero if the cc field of the specified transport mode scsw is 625 * valid, zero otherwise. 626 */ 627 static inline int scsw_tm_is_valid_cc(union scsw *scsw) 628 { 629 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) && 630 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); 631 } 632 633 /** 634 * scsw_tm_is_valid_fmt - check fmt field validity 635 * @scsw: pointer to scsw 636 * 637 * Return non-zero if the fmt field of the specified transport mode scsw is 638 * valid, zero otherwise. 639 */ 640 static inline int scsw_tm_is_valid_fmt(union scsw *scsw) 641 { 642 return 1; 643 } 644 645 /** 646 * scsw_tm_is_valid_x - check x field validity 647 * @scsw: pointer to scsw 648 * 649 * Return non-zero if the x field of the specified transport mode scsw is 650 * valid, zero otherwise. 651 */ 652 static inline int scsw_tm_is_valid_x(union scsw *scsw) 653 { 654 return 1; 655 } 656 657 /** 658 * scsw_tm_is_valid_q - check q field validity 659 * @scsw: pointer to scsw 660 * 661 * Return non-zero if the q field of the specified transport mode scsw is 662 * valid, zero otherwise. 663 */ 664 static inline int scsw_tm_is_valid_q(union scsw *scsw) 665 { 666 return 1; 667 } 668 669 /** 670 * scsw_tm_is_valid_ectl - check ectl field validity 671 * @scsw: pointer to scsw 672 * 673 * Return non-zero if the ectl field of the specified transport mode scsw is 674 * valid, zero otherwise. 675 */ 676 static inline int scsw_tm_is_valid_ectl(union scsw *scsw) 677 { 678 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && 679 !(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && 680 (scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS); 681 } 682 683 /** 684 * scsw_tm_is_valid_pno - check pno field validity 685 * @scsw: pointer to scsw 686 * 687 * Return non-zero if the pno field of the specified transport mode scsw is 688 * valid, zero otherwise. 689 */ 690 static inline int scsw_tm_is_valid_pno(union scsw *scsw) 691 { 692 return (scsw->tm.fctl != 0) && 693 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && 694 (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) || 695 ((scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && 696 (scsw->tm.actl & SCSW_ACTL_SUSPENDED))); 697 } 698 699 /** 700 * scsw_tm_is_valid_fctl - check fctl field validity 701 * @scsw: pointer to scsw 702 * 703 * Return non-zero if the fctl field of the specified transport mode scsw is 704 * valid, zero otherwise. 705 */ 706 static inline int scsw_tm_is_valid_fctl(union scsw *scsw) 707 { 708 /* Only valid if pmcw.dnv == 1*/ 709 return 1; 710 } 711 712 /** 713 * scsw_tm_is_valid_actl - check actl field validity 714 * @scsw: pointer to scsw 715 * 716 * Return non-zero if the actl field of the specified transport mode scsw is 717 * valid, zero otherwise. 718 */ 719 static inline int scsw_tm_is_valid_actl(union scsw *scsw) 720 { 721 /* Only valid if pmcw.dnv == 1*/ 722 return 1; 723 } 724 725 /** 726 * scsw_tm_is_valid_stctl - check stctl field validity 727 * @scsw: pointer to scsw 728 * 729 * Return non-zero if the stctl field of the specified transport mode scsw is 730 * valid, zero otherwise. 731 */ 732 static inline int scsw_tm_is_valid_stctl(union scsw *scsw) 733 { 734 /* Only valid if pmcw.dnv == 1*/ 735 return 1; 736 } 737 738 /** 739 * scsw_tm_is_valid_dstat - check dstat field validity 740 * @scsw: pointer to scsw 741 * 742 * Return non-zero if the dstat field of the specified transport mode scsw is 743 * valid, zero otherwise. 744 */ 745 static inline int scsw_tm_is_valid_dstat(union scsw *scsw) 746 { 747 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && 748 (scsw->tm.cc != 3); 749 } 750 751 /** 752 * scsw_tm_is_valid_cstat - check cstat field validity 753 * @scsw: pointer to scsw 754 * 755 * Return non-zero if the cstat field of the specified transport mode scsw is 756 * valid, zero otherwise. 757 */ 758 static inline int scsw_tm_is_valid_cstat(union scsw *scsw) 759 { 760 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && 761 (scsw->tm.cc != 3); 762 } 763 764 /** 765 * scsw_tm_is_valid_fcxs - check fcxs field validity 766 * @scsw: pointer to scsw 767 * 768 * Return non-zero if the fcxs field of the specified transport mode scsw is 769 * valid, zero otherwise. 770 */ 771 static inline int scsw_tm_is_valid_fcxs(union scsw *scsw) 772 { 773 return 1; 774 } 775 776 /** 777 * scsw_tm_is_valid_schxs - check schxs field validity 778 * @scsw: pointer to scsw 779 * 780 * Return non-zero if the schxs field of the specified transport mode scsw is 781 * valid, zero otherwise. 782 */ 783 static inline int scsw_tm_is_valid_schxs(union scsw *scsw) 784 { 785 return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK | 786 SCHN_STAT_INTF_CTRL_CHK | 787 SCHN_STAT_PROT_CHECK | 788 SCHN_STAT_CHN_DATA_CHK)); 789 } 790 791 /** 792 * scsw_is_valid_actl - check actl field validity 793 * @scsw: pointer to scsw 794 * 795 * Return non-zero if the actl field of the specified scsw is valid, 796 * regardless of whether it is a transport mode or command mode scsw. 797 * Return zero if the field does not contain a valid value. 798 */ 799 static inline int scsw_is_valid_actl(union scsw *scsw) 800 { 801 if (scsw_is_tm(scsw)) 802 return scsw_tm_is_valid_actl(scsw); 803 else 804 return scsw_cmd_is_valid_actl(scsw); 805 } 806 807 /** 808 * scsw_is_valid_cc - check cc field validity 809 * @scsw: pointer to scsw 810 * 811 * Return non-zero if the cc field of the specified scsw is valid, 812 * regardless of whether it is a transport mode or command mode scsw. 813 * Return zero if the field does not contain a valid value. 814 */ 815 static inline int scsw_is_valid_cc(union scsw *scsw) 816 { 817 if (scsw_is_tm(scsw)) 818 return scsw_tm_is_valid_cc(scsw); 819 else 820 return scsw_cmd_is_valid_cc(scsw); 821 } 822 823 /** 824 * scsw_is_valid_cstat - check cstat field validity 825 * @scsw: pointer to scsw 826 * 827 * Return non-zero if the cstat field of the specified scsw is valid, 828 * regardless of whether it is a transport mode or command mode scsw. 829 * Return zero if the field does not contain a valid value. 830 */ 831 static inline int scsw_is_valid_cstat(union scsw *scsw) 832 { 833 if (scsw_is_tm(scsw)) 834 return scsw_tm_is_valid_cstat(scsw); 835 else 836 return scsw_cmd_is_valid_cstat(scsw); 837 } 838 839 /** 840 * scsw_is_valid_dstat - check dstat field validity 841 * @scsw: pointer to scsw 842 * 843 * Return non-zero if the dstat field of the specified scsw is valid, 844 * regardless of whether it is a transport mode or command mode scsw. 845 * Return zero if the field does not contain a valid value. 846 */ 847 static inline int scsw_is_valid_dstat(union scsw *scsw) 848 { 849 if (scsw_is_tm(scsw)) 850 return scsw_tm_is_valid_dstat(scsw); 851 else 852 return scsw_cmd_is_valid_dstat(scsw); 853 } 854 855 /** 856 * scsw_is_valid_ectl - check ectl field validity 857 * @scsw: pointer to scsw 858 * 859 * Return non-zero if the ectl field of the specified scsw is valid, 860 * regardless of whether it is a transport mode or command mode scsw. 861 * Return zero if the field does not contain a valid value. 862 */ 863 static inline int scsw_is_valid_ectl(union scsw *scsw) 864 { 865 if (scsw_is_tm(scsw)) 866 return scsw_tm_is_valid_ectl(scsw); 867 else 868 return scsw_cmd_is_valid_ectl(scsw); 869 } 870 871 /** 872 * scsw_is_valid_eswf - check eswf field validity 873 * @scsw: pointer to scsw 874 * 875 * Return non-zero if the eswf field of the specified scsw is valid, 876 * regardless of whether it is a transport mode or command mode scsw. 877 * Return zero if the field does not contain a valid value. 878 */ 879 static inline int scsw_is_valid_eswf(union scsw *scsw) 880 { 881 if (scsw_is_tm(scsw)) 882 return scsw_tm_is_valid_eswf(scsw); 883 else 884 return scsw_cmd_is_valid_eswf(scsw); 885 } 886 887 /** 888 * scsw_is_valid_fctl - check fctl field validity 889 * @scsw: pointer to scsw 890 * 891 * Return non-zero if the fctl field of the specified scsw is valid, 892 * regardless of whether it is a transport mode or command mode scsw. 893 * Return zero if the field does not contain a valid value. 894 */ 895 static inline int scsw_is_valid_fctl(union scsw *scsw) 896 { 897 if (scsw_is_tm(scsw)) 898 return scsw_tm_is_valid_fctl(scsw); 899 else 900 return scsw_cmd_is_valid_fctl(scsw); 901 } 902 903 /** 904 * scsw_is_valid_key - check key field validity 905 * @scsw: pointer to scsw 906 * 907 * Return non-zero if the key field of the specified scsw is valid, 908 * regardless of whether it is a transport mode or command mode scsw. 909 * Return zero if the field does not contain a valid value. 910 */ 911 static inline int scsw_is_valid_key(union scsw *scsw) 912 { 913 if (scsw_is_tm(scsw)) 914 return scsw_tm_is_valid_key(scsw); 915 else 916 return scsw_cmd_is_valid_key(scsw); 917 } 918 919 /** 920 * scsw_is_valid_pno - check pno field validity 921 * @scsw: pointer to scsw 922 * 923 * Return non-zero if the pno field of the specified scsw is valid, 924 * regardless of whether it is a transport mode or command mode scsw. 925 * Return zero if the field does not contain a valid value. 926 */ 927 static inline int scsw_is_valid_pno(union scsw *scsw) 928 { 929 if (scsw_is_tm(scsw)) 930 return scsw_tm_is_valid_pno(scsw); 931 else 932 return scsw_cmd_is_valid_pno(scsw); 933 } 934 935 /** 936 * scsw_is_valid_stctl - check stctl field validity 937 * @scsw: pointer to scsw 938 * 939 * Return non-zero if the stctl field of the specified scsw is valid, 940 * regardless of whether it is a transport mode or command mode scsw. 941 * Return zero if the field does not contain a valid value. 942 */ 943 static inline int scsw_is_valid_stctl(union scsw *scsw) 944 { 945 if (scsw_is_tm(scsw)) 946 return scsw_tm_is_valid_stctl(scsw); 947 else 948 return scsw_cmd_is_valid_stctl(scsw); 949 } 950 951 /** 952 * scsw_cmd_is_solicited - check for solicited scsw 953 * @scsw: pointer to scsw 954 * 955 * Return non-zero if the command mode scsw indicates that the associated 956 * status condition is solicited, zero if it is unsolicited. 957 */ 958 static inline int scsw_cmd_is_solicited(union scsw *scsw) 959 { 960 return (scsw->cmd.cc != 0) || (scsw->cmd.stctl != 961 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); 962 } 963 964 /** 965 * scsw_tm_is_solicited - check for solicited scsw 966 * @scsw: pointer to scsw 967 * 968 * Return non-zero if the transport mode scsw indicates that the associated 969 * status condition is solicited, zero if it is unsolicited. 970 */ 971 static inline int scsw_tm_is_solicited(union scsw *scsw) 972 { 973 return (scsw->tm.cc != 0) || (scsw->tm.stctl != 974 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); 975 } 976 977 /** 978 * scsw_is_solicited - check for solicited scsw 979 * @scsw: pointer to scsw 980 * 981 * Return non-zero if the transport or command mode scsw indicates that the 982 * associated status condition is solicited, zero if it is unsolicited. 983 */ 984 static inline int scsw_is_solicited(union scsw *scsw) 985 { 986 if (scsw_is_tm(scsw)) 987 return scsw_tm_is_solicited(scsw); 988 else 989 return scsw_cmd_is_solicited(scsw); 990 } 991 992 #endif /* _ASM_S390_SCSW_H_ */ 993