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1/*
2 * Helper functions for scsw access.
3 *
4 * Copyright IBM Corp. 2008,2009
5 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
6 */
7
8#ifndef _ASM_S390_SCSW_H_
9#define _ASM_S390_SCSW_H_
10
11#include <linux/types.h>
12#include <asm/chsc.h>
13#include <asm/cio.h>
14
15/**
16 * struct cmd_scsw - command-mode subchannel status word
17 * @key: subchannel key
18 * @sctl: suspend control
19 * @eswf: esw format
20 * @cc: deferred condition code
21 * @fmt: format
22 * @pfch: prefetch
23 * @isic: initial-status interruption control
24 * @alcc: address-limit checking control
25 * @ssi: suppress-suspended interruption
26 * @zcc: zero condition code
27 * @ectl: extended control
28 * @pno: path not operational
29 * @res: reserved
30 * @fctl: function control
31 * @actl: activity control
32 * @stctl: status control
33 * @cpa: channel program address
34 * @dstat: device status
35 * @cstat: subchannel status
36 * @count: residual count
37 */
38struct cmd_scsw {
39 __u32 key : 4;
40 __u32 sctl : 1;
41 __u32 eswf : 1;
42 __u32 cc : 2;
43 __u32 fmt : 1;
44 __u32 pfch : 1;
45 __u32 isic : 1;
46 __u32 alcc : 1;
47 __u32 ssi : 1;
48 __u32 zcc : 1;
49 __u32 ectl : 1;
50 __u32 pno : 1;
51 __u32 res : 1;
52 __u32 fctl : 3;
53 __u32 actl : 7;
54 __u32 stctl : 5;
55 __u32 cpa;
56 __u32 dstat : 8;
57 __u32 cstat : 8;
58 __u32 count : 16;
59} __attribute__ ((packed));
60
61/**
62 * struct tm_scsw - transport-mode subchannel status word
63 * @key: subchannel key
64 * @eswf: esw format
65 * @cc: deferred condition code
66 * @fmt: format
67 * @x: IRB-format control
68 * @q: interrogate-complete
69 * @ectl: extended control
70 * @pno: path not operational
71 * @fctl: function control
72 * @actl: activity control
73 * @stctl: status control
74 * @tcw: TCW address
75 * @dstat: device status
76 * @cstat: subchannel status
77 * @fcxs: FCX status
78 * @schxs: subchannel-extended status
79 */
80struct tm_scsw {
81 u32 key:4;
82 u32 :1;
83 u32 eswf:1;
84 u32 cc:2;
85 u32 fmt:3;
86 u32 x:1;
87 u32 q:1;
88 u32 :1;
89 u32 ectl:1;
90 u32 pno:1;
91 u32 :1;
92 u32 fctl:3;
93 u32 actl:7;
94 u32 stctl:5;
95 u32 tcw;
96 u32 dstat:8;
97 u32 cstat:8;
98 u32 fcxs:8;
99 u32 schxs:8;
100} __attribute__ ((packed));
101
102/**
103 * union scsw - subchannel status word
104 * @cmd: command-mode SCSW
105 * @tm: transport-mode SCSW
106 */
107union scsw {
108 struct cmd_scsw cmd;
109 struct tm_scsw tm;
110} __attribute__ ((packed));
111
112#define SCSW_FCTL_CLEAR_FUNC 0x1
113#define SCSW_FCTL_HALT_FUNC 0x2
114#define SCSW_FCTL_START_FUNC 0x4
115
116#define SCSW_ACTL_SUSPENDED 0x1
117#define SCSW_ACTL_DEVACT 0x2
118#define SCSW_ACTL_SCHACT 0x4
119#define SCSW_ACTL_CLEAR_PEND 0x8
120#define SCSW_ACTL_HALT_PEND 0x10
121#define SCSW_ACTL_START_PEND 0x20
122#define SCSW_ACTL_RESUME_PEND 0x40
123
124#define SCSW_STCTL_STATUS_PEND 0x1
125#define SCSW_STCTL_SEC_STATUS 0x2
126#define SCSW_STCTL_PRIM_STATUS 0x4
127#define SCSW_STCTL_INTER_STATUS 0x8
128#define SCSW_STCTL_ALERT_STATUS 0x10
129
130#define DEV_STAT_ATTENTION 0x80
131#define DEV_STAT_STAT_MOD 0x40
132#define DEV_STAT_CU_END 0x20
133#define DEV_STAT_BUSY 0x10
134#define DEV_STAT_CHN_END 0x08
135#define DEV_STAT_DEV_END 0x04
136#define DEV_STAT_UNIT_CHECK 0x02
137#define DEV_STAT_UNIT_EXCEP 0x01
138
139#define SCHN_STAT_PCI 0x80
140#define SCHN_STAT_INCORR_LEN 0x40
141#define SCHN_STAT_PROG_CHECK 0x20
142#define SCHN_STAT_PROT_CHECK 0x10
143#define SCHN_STAT_CHN_DATA_CHK 0x08
144#define SCHN_STAT_CHN_CTRL_CHK 0x04
145#define SCHN_STAT_INTF_CTRL_CHK 0x02
146#define SCHN_STAT_CHAIN_CHECK 0x01
147
148/*
149 * architectured values for first sense byte
150 */
151#define SNS0_CMD_REJECT 0x80
152#define SNS_CMD_REJECT SNS0_CMD_REJEC
153#define SNS0_INTERVENTION_REQ 0x40
154#define SNS0_BUS_OUT_CHECK 0x20
155#define SNS0_EQUIPMENT_CHECK 0x10
156#define SNS0_DATA_CHECK 0x08
157#define SNS0_OVERRUN 0x04
158#define SNS0_INCOMPL_DOMAIN 0x01
159
160/*
161 * architectured values for second sense byte
162 */
163#define SNS1_PERM_ERR 0x80
164#define SNS1_INV_TRACK_FORMAT 0x40
165#define SNS1_EOC 0x20
166#define SNS1_MESSAGE_TO_OPER 0x10
167#define SNS1_NO_REC_FOUND 0x08
168#define SNS1_FILE_PROTECTED 0x04
169#define SNS1_WRITE_INHIBITED 0x02
170#define SNS1_INPRECISE_END 0x01
171
172/*
173 * architectured values for third sense byte
174 */
175#define SNS2_REQ_INH_WRITE 0x80
176#define SNS2_CORRECTABLE 0x40
177#define SNS2_FIRST_LOG_ERR 0x20
178#define SNS2_ENV_DATA_PRESENT 0x10
179#define SNS2_INPRECISE_END 0x04
180
181/**
182 * scsw_is_tm - check for transport mode scsw
183 * @scsw: pointer to scsw
184 *
185 * Return non-zero if the specified scsw is a transport mode scsw, zero
186 * otherwise.
187 */
188static inline int scsw_is_tm(union scsw *scsw)
189{
190 return css_general_characteristics.fcx && (scsw->tm.x == 1);
191}
192
193/**
194 * scsw_key - return scsw key field
195 * @scsw: pointer to scsw
196 *
197 * Return the value of the key field of the specified scsw, regardless of
198 * whether it is a transport mode or command mode scsw.
199 */
200static inline u32 scsw_key(union scsw *scsw)
201{
202 if (scsw_is_tm(scsw))
203 return scsw->tm.key;
204 else
205 return scsw->cmd.key;
206}
207
208/**
209 * scsw_eswf - return scsw eswf field
210 * @scsw: pointer to scsw
211 *
212 * Return the value of the eswf field of the specified scsw, regardless of
213 * whether it is a transport mode or command mode scsw.
214 */
215static inline u32 scsw_eswf(union scsw *scsw)
216{
217 if (scsw_is_tm(scsw))
218 return scsw->tm.eswf;
219 else
220 return scsw->cmd.eswf;
221}
222
223/**
224 * scsw_cc - return scsw cc field
225 * @scsw: pointer to scsw
226 *
227 * Return the value of the cc field of the specified scsw, regardless of
228 * whether it is a transport mode or command mode scsw.
229 */
230static inline u32 scsw_cc(union scsw *scsw)
231{
232 if (scsw_is_tm(scsw))
233 return scsw->tm.cc;
234 else
235 return scsw->cmd.cc;
236}
237
238/**
239 * scsw_ectl - return scsw ectl field
240 * @scsw: pointer to scsw
241 *
242 * Return the value of the ectl field of the specified scsw, regardless of
243 * whether it is a transport mode or command mode scsw.
244 */
245static inline u32 scsw_ectl(union scsw *scsw)
246{
247 if (scsw_is_tm(scsw))
248 return scsw->tm.ectl;
249 else
250 return scsw->cmd.ectl;
251}
252
253/**
254 * scsw_pno - return scsw pno field
255 * @scsw: pointer to scsw
256 *
257 * Return the value of the pno field of the specified scsw, regardless of
258 * whether it is a transport mode or command mode scsw.
259 */
260static inline u32 scsw_pno(union scsw *scsw)
261{
262 if (scsw_is_tm(scsw))
263 return scsw->tm.pno;
264 else
265 return scsw->cmd.pno;
266}
267
268/**
269 * scsw_fctl - return scsw fctl field
270 * @scsw: pointer to scsw
271 *
272 * Return the value of the fctl field of the specified scsw, regardless of
273 * whether it is a transport mode or command mode scsw.
274 */
275static inline u32 scsw_fctl(union scsw *scsw)
276{
277 if (scsw_is_tm(scsw))
278 return scsw->tm.fctl;
279 else
280 return scsw->cmd.fctl;
281}
282
283/**
284 * scsw_actl - return scsw actl field
285 * @scsw: pointer to scsw
286 *
287 * Return the value of the actl field of the specified scsw, regardless of
288 * whether it is a transport mode or command mode scsw.
289 */
290static inline u32 scsw_actl(union scsw *scsw)
291{
292 if (scsw_is_tm(scsw))
293 return scsw->tm.actl;
294 else
295 return scsw->cmd.actl;
296}
297
298/**
299 * scsw_stctl - return scsw stctl field
300 * @scsw: pointer to scsw
301 *
302 * Return the value of the stctl field of the specified scsw, regardless of
303 * whether it is a transport mode or command mode scsw.
304 */
305static inline u32 scsw_stctl(union scsw *scsw)
306{
307 if (scsw_is_tm(scsw))
308 return scsw->tm.stctl;
309 else
310 return scsw->cmd.stctl;
311}
312
313/**
314 * scsw_dstat - return scsw dstat field
315 * @scsw: pointer to scsw
316 *
317 * Return the value of the dstat field of the specified scsw, regardless of
318 * whether it is a transport mode or command mode scsw.
319 */
320static inline u32 scsw_dstat(union scsw *scsw)
321{
322 if (scsw_is_tm(scsw))
323 return scsw->tm.dstat;
324 else
325 return scsw->cmd.dstat;
326}
327
328/**
329 * scsw_cstat - return scsw cstat field
330 * @scsw: pointer to scsw
331 *
332 * Return the value of the cstat field of the specified scsw, regardless of
333 * whether it is a transport mode or command mode scsw.
334 */
335static inline u32 scsw_cstat(union scsw *scsw)
336{
337 if (scsw_is_tm(scsw))
338 return scsw->tm.cstat;
339 else
340 return scsw->cmd.cstat;
341}
342
343/**
344 * scsw_cmd_is_valid_key - check key field validity
345 * @scsw: pointer to scsw
346 *
347 * Return non-zero if the key field of the specified command mode scsw is
348 * valid, zero otherwise.
349 */
350static inline int scsw_cmd_is_valid_key(union scsw *scsw)
351{
352 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
353}
354
355/**
356 * scsw_cmd_is_valid_sctl - check fctl field validity
357 * @scsw: pointer to scsw
358 *
359 * Return non-zero if the fctl field of the specified command mode scsw is
360 * valid, zero otherwise.
361 */
362static inline int scsw_cmd_is_valid_sctl(union scsw *scsw)
363{
364 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
365}
366
367/**
368 * scsw_cmd_is_valid_eswf - check eswf field validity
369 * @scsw: pointer to scsw
370 *
371 * Return non-zero if the eswf field of the specified command mode scsw is
372 * valid, zero otherwise.
373 */
374static inline int scsw_cmd_is_valid_eswf(union scsw *scsw)
375{
376 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
377}
378
379/**
380 * scsw_cmd_is_valid_cc - check cc field validity
381 * @scsw: pointer to scsw
382 *
383 * Return non-zero if the cc field of the specified command mode scsw is
384 * valid, zero otherwise.
385 */
386static inline int scsw_cmd_is_valid_cc(union scsw *scsw)
387{
388 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
389 (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
390}
391
392/**
393 * scsw_cmd_is_valid_fmt - check fmt field validity
394 * @scsw: pointer to scsw
395 *
396 * Return non-zero if the fmt field of the specified command mode scsw is
397 * valid, zero otherwise.
398 */
399static inline int scsw_cmd_is_valid_fmt(union scsw *scsw)
400{
401 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
402}
403
404/**
405 * scsw_cmd_is_valid_pfch - check pfch field validity
406 * @scsw: pointer to scsw
407 *
408 * Return non-zero if the pfch field of the specified command mode scsw is
409 * valid, zero otherwise.
410 */
411static inline int scsw_cmd_is_valid_pfch(union scsw *scsw)
412{
413 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
414}
415
416/**
417 * scsw_cmd_is_valid_isic - check isic field validity
418 * @scsw: pointer to scsw
419 *
420 * Return non-zero if the isic field of the specified command mode scsw is
421 * valid, zero otherwise.
422 */
423static inline int scsw_cmd_is_valid_isic(union scsw *scsw)
424{
425 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
426}
427
428/**
429 * scsw_cmd_is_valid_alcc - check alcc field validity
430 * @scsw: pointer to scsw
431 *
432 * Return non-zero if the alcc field of the specified command mode scsw is
433 * valid, zero otherwise.
434 */
435static inline int scsw_cmd_is_valid_alcc(union scsw *scsw)
436{
437 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
438}
439
440/**
441 * scsw_cmd_is_valid_ssi - check ssi field validity
442 * @scsw: pointer to scsw
443 *
444 * Return non-zero if the ssi field of the specified command mode scsw is
445 * valid, zero otherwise.
446 */
447static inline int scsw_cmd_is_valid_ssi(union scsw *scsw)
448{
449 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
450}
451
452/**
453 * scsw_cmd_is_valid_zcc - check zcc field validity
454 * @scsw: pointer to scsw
455 *
456 * Return non-zero if the zcc field of the specified command mode scsw is
457 * valid, zero otherwise.
458 */
459static inline int scsw_cmd_is_valid_zcc(union scsw *scsw)
460{
461 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
462 (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS);
463}
464
465/**
466 * scsw_cmd_is_valid_ectl - check ectl field validity
467 * @scsw: pointer to scsw
468 *
469 * Return non-zero if the ectl field of the specified command mode scsw is
470 * valid, zero otherwise.
471 */
472static inline int scsw_cmd_is_valid_ectl(union scsw *scsw)
473{
474 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
475 !(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) &&
476 (scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS);
477}
478
479/**
480 * scsw_cmd_is_valid_pno - check pno field validity
481 * @scsw: pointer to scsw
482 *
483 * Return non-zero if the pno field of the specified command mode scsw is
484 * valid, zero otherwise.
485 */
486static inline int scsw_cmd_is_valid_pno(union scsw *scsw)
487{
488 return (scsw->cmd.fctl != 0) &&
489 (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
490 (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) ||
491 ((scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) &&
492 (scsw->cmd.actl & SCSW_ACTL_SUSPENDED)));
493}
494
495/**
496 * scsw_cmd_is_valid_fctl - check fctl field validity
497 * @scsw: pointer to scsw
498 *
499 * Return non-zero if the fctl field of the specified command mode scsw is
500 * valid, zero otherwise.
501 */
502static inline int scsw_cmd_is_valid_fctl(union scsw *scsw)
503{
504 /* Only valid if pmcw.dnv == 1*/
505 return 1;
506}
507
508/**
509 * scsw_cmd_is_valid_actl - check actl field validity
510 * @scsw: pointer to scsw
511 *
512 * Return non-zero if the actl field of the specified command mode scsw is
513 * valid, zero otherwise.
514 */
515static inline int scsw_cmd_is_valid_actl(union scsw *scsw)
516{
517 /* Only valid if pmcw.dnv == 1*/
518 return 1;
519}
520
521/**
522 * scsw_cmd_is_valid_stctl - check stctl field validity
523 * @scsw: pointer to scsw
524 *
525 * Return non-zero if the stctl field of the specified command mode scsw is
526 * valid, zero otherwise.
527 */
528static inline int scsw_cmd_is_valid_stctl(union scsw *scsw)
529{
530 /* Only valid if pmcw.dnv == 1*/
531 return 1;
532}
533
534/**
535 * scsw_cmd_is_valid_dstat - check dstat field validity
536 * @scsw: pointer to scsw
537 *
538 * Return non-zero if the dstat field of the specified command mode scsw is
539 * valid, zero otherwise.
540 */
541static inline int scsw_cmd_is_valid_dstat(union scsw *scsw)
542{
543 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
544 (scsw->cmd.cc != 3);
545}
546
547/**
548 * scsw_cmd_is_valid_cstat - check cstat field validity
549 * @scsw: pointer to scsw
550 *
551 * Return non-zero if the cstat field of the specified command mode scsw is
552 * valid, zero otherwise.
553 */
554static inline int scsw_cmd_is_valid_cstat(union scsw *scsw)
555{
556 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
557 (scsw->cmd.cc != 3);
558}
559
560/**
561 * scsw_tm_is_valid_key - check key field validity
562 * @scsw: pointer to scsw
563 *
564 * Return non-zero if the key field of the specified transport mode scsw is
565 * valid, zero otherwise.
566 */
567static inline int scsw_tm_is_valid_key(union scsw *scsw)
568{
569 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC);
570}
571
572/**
573 * scsw_tm_is_valid_eswf - check eswf field validity
574 * @scsw: pointer to scsw
575 *
576 * Return non-zero if the eswf field of the specified transport mode scsw is
577 * valid, zero otherwise.
578 */
579static inline int scsw_tm_is_valid_eswf(union scsw *scsw)
580{
581 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
582}
583
584/**
585 * scsw_tm_is_valid_cc - check cc field validity
586 * @scsw: pointer to scsw
587 *
588 * Return non-zero if the cc field of the specified transport mode scsw is
589 * valid, zero otherwise.
590 */
591static inline int scsw_tm_is_valid_cc(union scsw *scsw)
592{
593 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) &&
594 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
595}
596
597/**
598 * scsw_tm_is_valid_fmt - check fmt field validity
599 * @scsw: pointer to scsw
600 *
601 * Return non-zero if the fmt field of the specified transport mode scsw is
602 * valid, zero otherwise.
603 */
604static inline int scsw_tm_is_valid_fmt(union scsw *scsw)
605{
606 return 1;
607}
608
609/**
610 * scsw_tm_is_valid_x - check x field validity
611 * @scsw: pointer to scsw
612 *
613 * Return non-zero if the x field of the specified transport mode scsw is
614 * valid, zero otherwise.
615 */
616static inline int scsw_tm_is_valid_x(union scsw *scsw)
617{
618 return 1;
619}
620
621/**
622 * scsw_tm_is_valid_q - check q field validity
623 * @scsw: pointer to scsw
624 *
625 * Return non-zero if the q field of the specified transport mode scsw is
626 * valid, zero otherwise.
627 */
628static inline int scsw_tm_is_valid_q(union scsw *scsw)
629{
630 return 1;
631}
632
633/**
634 * scsw_tm_is_valid_ectl - check ectl field validity
635 * @scsw: pointer to scsw
636 *
637 * Return non-zero if the ectl field of the specified transport mode scsw is
638 * valid, zero otherwise.
639 */
640static inline int scsw_tm_is_valid_ectl(union scsw *scsw)
641{
642 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
643 !(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) &&
644 (scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS);
645}
646
647/**
648 * scsw_tm_is_valid_pno - check pno field validity
649 * @scsw: pointer to scsw
650 *
651 * Return non-zero if the pno field of the specified transport mode scsw is
652 * valid, zero otherwise.
653 */
654static inline int scsw_tm_is_valid_pno(union scsw *scsw)
655{
656 return (scsw->tm.fctl != 0) &&
657 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
658 (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) ||
659 ((scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) &&
660 (scsw->tm.actl & SCSW_ACTL_SUSPENDED)));
661}
662
663/**
664 * scsw_tm_is_valid_fctl - check fctl field validity
665 * @scsw: pointer to scsw
666 *
667 * Return non-zero if the fctl field of the specified transport mode scsw is
668 * valid, zero otherwise.
669 */
670static inline int scsw_tm_is_valid_fctl(union scsw *scsw)
671{
672 /* Only valid if pmcw.dnv == 1*/
673 return 1;
674}
675
676/**
677 * scsw_tm_is_valid_actl - check actl field validity
678 * @scsw: pointer to scsw
679 *
680 * Return non-zero if the actl field of the specified transport mode scsw is
681 * valid, zero otherwise.
682 */
683static inline int scsw_tm_is_valid_actl(union scsw *scsw)
684{
685 /* Only valid if pmcw.dnv == 1*/
686 return 1;
687}
688
689/**
690 * scsw_tm_is_valid_stctl - check stctl field validity
691 * @scsw: pointer to scsw
692 *
693 * Return non-zero if the stctl field of the specified transport mode scsw is
694 * valid, zero otherwise.
695 */
696static inline int scsw_tm_is_valid_stctl(union scsw *scsw)
697{
698 /* Only valid if pmcw.dnv == 1*/
699 return 1;
700}
701
702/**
703 * scsw_tm_is_valid_dstat - check dstat field validity
704 * @scsw: pointer to scsw
705 *
706 * Return non-zero if the dstat field of the specified transport mode scsw is
707 * valid, zero otherwise.
708 */
709static inline int scsw_tm_is_valid_dstat(union scsw *scsw)
710{
711 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
712 (scsw->tm.cc != 3);
713}
714
715/**
716 * scsw_tm_is_valid_cstat - check cstat field validity
717 * @scsw: pointer to scsw
718 *
719 * Return non-zero if the cstat field of the specified transport mode scsw is
720 * valid, zero otherwise.
721 */
722static inline int scsw_tm_is_valid_cstat(union scsw *scsw)
723{
724 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
725 (scsw->tm.cc != 3);
726}
727
728/**
729 * scsw_tm_is_valid_fcxs - check fcxs field validity
730 * @scsw: pointer to scsw
731 *
732 * Return non-zero if the fcxs field of the specified transport mode scsw is
733 * valid, zero otherwise.
734 */
735static inline int scsw_tm_is_valid_fcxs(union scsw *scsw)
736{
737 return 1;
738}
739
740/**
741 * scsw_tm_is_valid_schxs - check schxs field validity
742 * @scsw: pointer to scsw
743 *
744 * Return non-zero if the schxs field of the specified transport mode scsw is
745 * valid, zero otherwise.
746 */
747static inline int scsw_tm_is_valid_schxs(union scsw *scsw)
748{
749 return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK |
750 SCHN_STAT_INTF_CTRL_CHK |
751 SCHN_STAT_PROT_CHECK |
752 SCHN_STAT_CHN_DATA_CHK));
753}
754
755/**
756 * scsw_is_valid_actl - check actl field validity
757 * @scsw: pointer to scsw
758 *
759 * Return non-zero if the actl field of the specified scsw is valid,
760 * regardless of whether it is a transport mode or command mode scsw.
761 * Return zero if the field does not contain a valid value.
762 */
763static inline int scsw_is_valid_actl(union scsw *scsw)
764{
765 if (scsw_is_tm(scsw))
766 return scsw_tm_is_valid_actl(scsw);
767 else
768 return scsw_cmd_is_valid_actl(scsw);
769}
770
771/**
772 * scsw_is_valid_cc - check cc field validity
773 * @scsw: pointer to scsw
774 *
775 * Return non-zero if the cc field of the specified scsw is valid,
776 * regardless of whether it is a transport mode or command mode scsw.
777 * Return zero if the field does not contain a valid value.
778 */
779static inline int scsw_is_valid_cc(union scsw *scsw)
780{
781 if (scsw_is_tm(scsw))
782 return scsw_tm_is_valid_cc(scsw);
783 else
784 return scsw_cmd_is_valid_cc(scsw);
785}
786
787/**
788 * scsw_is_valid_cstat - check cstat field validity
789 * @scsw: pointer to scsw
790 *
791 * Return non-zero if the cstat field of the specified scsw is valid,
792 * regardless of whether it is a transport mode or command mode scsw.
793 * Return zero if the field does not contain a valid value.
794 */
795static inline int scsw_is_valid_cstat(union scsw *scsw)
796{
797 if (scsw_is_tm(scsw))
798 return scsw_tm_is_valid_cstat(scsw);
799 else
800 return scsw_cmd_is_valid_cstat(scsw);
801}
802
803/**
804 * scsw_is_valid_dstat - check dstat field validity
805 * @scsw: pointer to scsw
806 *
807 * Return non-zero if the dstat field of the specified scsw is valid,
808 * regardless of whether it is a transport mode or command mode scsw.
809 * Return zero if the field does not contain a valid value.
810 */
811static inline int scsw_is_valid_dstat(union scsw *scsw)
812{
813 if (scsw_is_tm(scsw))
814 return scsw_tm_is_valid_dstat(scsw);
815 else
816 return scsw_cmd_is_valid_dstat(scsw);
817}
818
819/**
820 * scsw_is_valid_ectl - check ectl field validity
821 * @scsw: pointer to scsw
822 *
823 * Return non-zero if the ectl field of the specified scsw is valid,
824 * regardless of whether it is a transport mode or command mode scsw.
825 * Return zero if the field does not contain a valid value.
826 */
827static inline int scsw_is_valid_ectl(union scsw *scsw)
828{
829 if (scsw_is_tm(scsw))
830 return scsw_tm_is_valid_ectl(scsw);
831 else
832 return scsw_cmd_is_valid_ectl(scsw);
833}
834
835/**
836 * scsw_is_valid_eswf - check eswf field validity
837 * @scsw: pointer to scsw
838 *
839 * Return non-zero if the eswf field of the specified scsw is valid,
840 * regardless of whether it is a transport mode or command mode scsw.
841 * Return zero if the field does not contain a valid value.
842 */
843static inline int scsw_is_valid_eswf(union scsw *scsw)
844{
845 if (scsw_is_tm(scsw))
846 return scsw_tm_is_valid_eswf(scsw);
847 else
848 return scsw_cmd_is_valid_eswf(scsw);
849}
850
851/**
852 * scsw_is_valid_fctl - check fctl field validity
853 * @scsw: pointer to scsw
854 *
855 * Return non-zero if the fctl field of the specified scsw is valid,
856 * regardless of whether it is a transport mode or command mode scsw.
857 * Return zero if the field does not contain a valid value.
858 */
859static inline int scsw_is_valid_fctl(union scsw *scsw)
860{
861 if (scsw_is_tm(scsw))
862 return scsw_tm_is_valid_fctl(scsw);
863 else
864 return scsw_cmd_is_valid_fctl(scsw);
865}
866
867/**
868 * scsw_is_valid_key - check key field validity
869 * @scsw: pointer to scsw
870 *
871 * Return non-zero if the key field of the specified scsw is valid,
872 * regardless of whether it is a transport mode or command mode scsw.
873 * Return zero if the field does not contain a valid value.
874 */
875static inline int scsw_is_valid_key(union scsw *scsw)
876{
877 if (scsw_is_tm(scsw))
878 return scsw_tm_is_valid_key(scsw);
879 else
880 return scsw_cmd_is_valid_key(scsw);
881}
882
883/**
884 * scsw_is_valid_pno - check pno field validity
885 * @scsw: pointer to scsw
886 *
887 * Return non-zero if the pno field of the specified scsw is valid,
888 * regardless of whether it is a transport mode or command mode scsw.
889 * Return zero if the field does not contain a valid value.
890 */
891static inline int scsw_is_valid_pno(union scsw *scsw)
892{
893 if (scsw_is_tm(scsw))
894 return scsw_tm_is_valid_pno(scsw);
895 else
896 return scsw_cmd_is_valid_pno(scsw);
897}
898
899/**
900 * scsw_is_valid_stctl - check stctl field validity
901 * @scsw: pointer to scsw
902 *
903 * Return non-zero if the stctl field of the specified scsw is valid,
904 * regardless of whether it is a transport mode or command mode scsw.
905 * Return zero if the field does not contain a valid value.
906 */
907static inline int scsw_is_valid_stctl(union scsw *scsw)
908{
909 if (scsw_is_tm(scsw))
910 return scsw_tm_is_valid_stctl(scsw);
911 else
912 return scsw_cmd_is_valid_stctl(scsw);
913}
914
915/**
916 * scsw_cmd_is_solicited - check for solicited scsw
917 * @scsw: pointer to scsw
918 *
919 * Return non-zero if the command mode scsw indicates that the associated
920 * status condition is solicited, zero if it is unsolicited.
921 */
922static inline int scsw_cmd_is_solicited(union scsw *scsw)
923{
924 return (scsw->cmd.cc != 0) || (scsw->cmd.stctl !=
925 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
926}
927
928/**
929 * scsw_tm_is_solicited - check for solicited scsw
930 * @scsw: pointer to scsw
931 *
932 * Return non-zero if the transport mode scsw indicates that the associated
933 * status condition is solicited, zero if it is unsolicited.
934 */
935static inline int scsw_tm_is_solicited(union scsw *scsw)
936{
937 return (scsw->tm.cc != 0) || (scsw->tm.stctl !=
938 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
939}
940
941/**
942 * scsw_is_solicited - check for solicited scsw
943 * @scsw: pointer to scsw
944 *
945 * Return non-zero if the transport or command mode scsw indicates that the
946 * associated status condition is solicited, zero if it is unsolicited.
947 */
948static inline int scsw_is_solicited(union scsw *scsw)
949{
950 if (scsw_is_tm(scsw))
951 return scsw_tm_is_solicited(scsw);
952 else
953 return scsw_cmd_is_solicited(scsw);
954}
955
956#endif /* _ASM_S390_SCSW_H_ */
1/*
2 * Helper functions for scsw access.
3 *
4 * Copyright IBM Corp. 2008, 2012
5 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
6 */
7
8#ifndef _ASM_S390_SCSW_H_
9#define _ASM_S390_SCSW_H_
10
11#include <linux/types.h>
12#include <asm/css_chars.h>
13#include <asm/cio.h>
14
15/**
16 * struct cmd_scsw - command-mode subchannel status word
17 * @key: subchannel key
18 * @sctl: suspend control
19 * @eswf: esw format
20 * @cc: deferred condition code
21 * @fmt: format
22 * @pfch: prefetch
23 * @isic: initial-status interruption control
24 * @alcc: address-limit checking control
25 * @ssi: suppress-suspended interruption
26 * @zcc: zero condition code
27 * @ectl: extended control
28 * @pno: path not operational
29 * @res: reserved
30 * @fctl: function control
31 * @actl: activity control
32 * @stctl: status control
33 * @cpa: channel program address
34 * @dstat: device status
35 * @cstat: subchannel status
36 * @count: residual count
37 */
38struct cmd_scsw {
39 __u32 key : 4;
40 __u32 sctl : 1;
41 __u32 eswf : 1;
42 __u32 cc : 2;
43 __u32 fmt : 1;
44 __u32 pfch : 1;
45 __u32 isic : 1;
46 __u32 alcc : 1;
47 __u32 ssi : 1;
48 __u32 zcc : 1;
49 __u32 ectl : 1;
50 __u32 pno : 1;
51 __u32 res : 1;
52 __u32 fctl : 3;
53 __u32 actl : 7;
54 __u32 stctl : 5;
55 __u32 cpa;
56 __u32 dstat : 8;
57 __u32 cstat : 8;
58 __u32 count : 16;
59} __attribute__ ((packed));
60
61/**
62 * struct tm_scsw - transport-mode subchannel status word
63 * @key: subchannel key
64 * @eswf: esw format
65 * @cc: deferred condition code
66 * @fmt: format
67 * @x: IRB-format control
68 * @q: interrogate-complete
69 * @ectl: extended control
70 * @pno: path not operational
71 * @fctl: function control
72 * @actl: activity control
73 * @stctl: status control
74 * @tcw: TCW address
75 * @dstat: device status
76 * @cstat: subchannel status
77 * @fcxs: FCX status
78 * @schxs: subchannel-extended status
79 */
80struct tm_scsw {
81 u32 key:4;
82 u32 :1;
83 u32 eswf:1;
84 u32 cc:2;
85 u32 fmt:3;
86 u32 x:1;
87 u32 q:1;
88 u32 :1;
89 u32 ectl:1;
90 u32 pno:1;
91 u32 :1;
92 u32 fctl:3;
93 u32 actl:7;
94 u32 stctl:5;
95 u32 tcw;
96 u32 dstat:8;
97 u32 cstat:8;
98 u32 fcxs:8;
99 u32 schxs:8;
100} __attribute__ ((packed));
101
102/**
103 * struct eadm_scsw - subchannel status word for eadm subchannels
104 * @key: subchannel key
105 * @eswf: esw format
106 * @cc: deferred condition code
107 * @ectl: extended control
108 * @fctl: function control
109 * @actl: activity control
110 * @stctl: status control
111 * @aob: AOB address
112 * @dstat: device status
113 * @cstat: subchannel status
114 */
115struct eadm_scsw {
116 u32 key:4;
117 u32:1;
118 u32 eswf:1;
119 u32 cc:2;
120 u32:6;
121 u32 ectl:1;
122 u32:2;
123 u32 fctl:3;
124 u32 actl:7;
125 u32 stctl:5;
126 u32 aob;
127 u32 dstat:8;
128 u32 cstat:8;
129 u32:16;
130} __packed;
131
132/**
133 * union scsw - subchannel status word
134 * @cmd: command-mode SCSW
135 * @tm: transport-mode SCSW
136 * @eadm: eadm SCSW
137 */
138union scsw {
139 struct cmd_scsw cmd;
140 struct tm_scsw tm;
141 struct eadm_scsw eadm;
142} __packed;
143
144#define SCSW_FCTL_CLEAR_FUNC 0x1
145#define SCSW_FCTL_HALT_FUNC 0x2
146#define SCSW_FCTL_START_FUNC 0x4
147
148#define SCSW_ACTL_SUSPENDED 0x1
149#define SCSW_ACTL_DEVACT 0x2
150#define SCSW_ACTL_SCHACT 0x4
151#define SCSW_ACTL_CLEAR_PEND 0x8
152#define SCSW_ACTL_HALT_PEND 0x10
153#define SCSW_ACTL_START_PEND 0x20
154#define SCSW_ACTL_RESUME_PEND 0x40
155
156#define SCSW_STCTL_STATUS_PEND 0x1
157#define SCSW_STCTL_SEC_STATUS 0x2
158#define SCSW_STCTL_PRIM_STATUS 0x4
159#define SCSW_STCTL_INTER_STATUS 0x8
160#define SCSW_STCTL_ALERT_STATUS 0x10
161
162#define DEV_STAT_ATTENTION 0x80
163#define DEV_STAT_STAT_MOD 0x40
164#define DEV_STAT_CU_END 0x20
165#define DEV_STAT_BUSY 0x10
166#define DEV_STAT_CHN_END 0x08
167#define DEV_STAT_DEV_END 0x04
168#define DEV_STAT_UNIT_CHECK 0x02
169#define DEV_STAT_UNIT_EXCEP 0x01
170
171#define SCHN_STAT_PCI 0x80
172#define SCHN_STAT_INCORR_LEN 0x40
173#define SCHN_STAT_PROG_CHECK 0x20
174#define SCHN_STAT_PROT_CHECK 0x10
175#define SCHN_STAT_CHN_DATA_CHK 0x08
176#define SCHN_STAT_CHN_CTRL_CHK 0x04
177#define SCHN_STAT_INTF_CTRL_CHK 0x02
178#define SCHN_STAT_CHAIN_CHECK 0x01
179
180/*
181 * architectured values for first sense byte
182 */
183#define SNS0_CMD_REJECT 0x80
184#define SNS_CMD_REJECT SNS0_CMD_REJEC
185#define SNS0_INTERVENTION_REQ 0x40
186#define SNS0_BUS_OUT_CHECK 0x20
187#define SNS0_EQUIPMENT_CHECK 0x10
188#define SNS0_DATA_CHECK 0x08
189#define SNS0_OVERRUN 0x04
190#define SNS0_INCOMPL_DOMAIN 0x01
191
192/*
193 * architectured values for second sense byte
194 */
195#define SNS1_PERM_ERR 0x80
196#define SNS1_INV_TRACK_FORMAT 0x40
197#define SNS1_EOC 0x20
198#define SNS1_MESSAGE_TO_OPER 0x10
199#define SNS1_NO_REC_FOUND 0x08
200#define SNS1_FILE_PROTECTED 0x04
201#define SNS1_WRITE_INHIBITED 0x02
202#define SNS1_INPRECISE_END 0x01
203
204/*
205 * architectured values for third sense byte
206 */
207#define SNS2_REQ_INH_WRITE 0x80
208#define SNS2_CORRECTABLE 0x40
209#define SNS2_FIRST_LOG_ERR 0x20
210#define SNS2_ENV_DATA_PRESENT 0x10
211#define SNS2_INPRECISE_END 0x04
212
213/**
214 * scsw_is_tm - check for transport mode scsw
215 * @scsw: pointer to scsw
216 *
217 * Return non-zero if the specified scsw is a transport mode scsw, zero
218 * otherwise.
219 */
220static inline int scsw_is_tm(union scsw *scsw)
221{
222 return css_general_characteristics.fcx && (scsw->tm.x == 1);
223}
224
225/**
226 * scsw_key - return scsw key field
227 * @scsw: pointer to scsw
228 *
229 * Return the value of the key field of the specified scsw, regardless of
230 * whether it is a transport mode or command mode scsw.
231 */
232static inline u32 scsw_key(union scsw *scsw)
233{
234 if (scsw_is_tm(scsw))
235 return scsw->tm.key;
236 else
237 return scsw->cmd.key;
238}
239
240/**
241 * scsw_eswf - return scsw eswf field
242 * @scsw: pointer to scsw
243 *
244 * Return the value of the eswf field of the specified scsw, regardless of
245 * whether it is a transport mode or command mode scsw.
246 */
247static inline u32 scsw_eswf(union scsw *scsw)
248{
249 if (scsw_is_tm(scsw))
250 return scsw->tm.eswf;
251 else
252 return scsw->cmd.eswf;
253}
254
255/**
256 * scsw_cc - return scsw cc field
257 * @scsw: pointer to scsw
258 *
259 * Return the value of the cc field of the specified scsw, regardless of
260 * whether it is a transport mode or command mode scsw.
261 */
262static inline u32 scsw_cc(union scsw *scsw)
263{
264 if (scsw_is_tm(scsw))
265 return scsw->tm.cc;
266 else
267 return scsw->cmd.cc;
268}
269
270/**
271 * scsw_ectl - return scsw ectl field
272 * @scsw: pointer to scsw
273 *
274 * Return the value of the ectl field of the specified scsw, regardless of
275 * whether it is a transport mode or command mode scsw.
276 */
277static inline u32 scsw_ectl(union scsw *scsw)
278{
279 if (scsw_is_tm(scsw))
280 return scsw->tm.ectl;
281 else
282 return scsw->cmd.ectl;
283}
284
285/**
286 * scsw_pno - return scsw pno field
287 * @scsw: pointer to scsw
288 *
289 * Return the value of the pno field of the specified scsw, regardless of
290 * whether it is a transport mode or command mode scsw.
291 */
292static inline u32 scsw_pno(union scsw *scsw)
293{
294 if (scsw_is_tm(scsw))
295 return scsw->tm.pno;
296 else
297 return scsw->cmd.pno;
298}
299
300/**
301 * scsw_fctl - return scsw fctl field
302 * @scsw: pointer to scsw
303 *
304 * Return the value of the fctl field of the specified scsw, regardless of
305 * whether it is a transport mode or command mode scsw.
306 */
307static inline u32 scsw_fctl(union scsw *scsw)
308{
309 if (scsw_is_tm(scsw))
310 return scsw->tm.fctl;
311 else
312 return scsw->cmd.fctl;
313}
314
315/**
316 * scsw_actl - return scsw actl field
317 * @scsw: pointer to scsw
318 *
319 * Return the value of the actl field of the specified scsw, regardless of
320 * whether it is a transport mode or command mode scsw.
321 */
322static inline u32 scsw_actl(union scsw *scsw)
323{
324 if (scsw_is_tm(scsw))
325 return scsw->tm.actl;
326 else
327 return scsw->cmd.actl;
328}
329
330/**
331 * scsw_stctl - return scsw stctl field
332 * @scsw: pointer to scsw
333 *
334 * Return the value of the stctl field of the specified scsw, regardless of
335 * whether it is a transport mode or command mode scsw.
336 */
337static inline u32 scsw_stctl(union scsw *scsw)
338{
339 if (scsw_is_tm(scsw))
340 return scsw->tm.stctl;
341 else
342 return scsw->cmd.stctl;
343}
344
345/**
346 * scsw_dstat - return scsw dstat field
347 * @scsw: pointer to scsw
348 *
349 * Return the value of the dstat field of the specified scsw, regardless of
350 * whether it is a transport mode or command mode scsw.
351 */
352static inline u32 scsw_dstat(union scsw *scsw)
353{
354 if (scsw_is_tm(scsw))
355 return scsw->tm.dstat;
356 else
357 return scsw->cmd.dstat;
358}
359
360/**
361 * scsw_cstat - return scsw cstat field
362 * @scsw: pointer to scsw
363 *
364 * Return the value of the cstat field of the specified scsw, regardless of
365 * whether it is a transport mode or command mode scsw.
366 */
367static inline u32 scsw_cstat(union scsw *scsw)
368{
369 if (scsw_is_tm(scsw))
370 return scsw->tm.cstat;
371 else
372 return scsw->cmd.cstat;
373}
374
375/**
376 * scsw_cmd_is_valid_key - check key field validity
377 * @scsw: pointer to scsw
378 *
379 * Return non-zero if the key field of the specified command mode scsw is
380 * valid, zero otherwise.
381 */
382static inline int scsw_cmd_is_valid_key(union scsw *scsw)
383{
384 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
385}
386
387/**
388 * scsw_cmd_is_valid_sctl - check fctl field validity
389 * @scsw: pointer to scsw
390 *
391 * Return non-zero if the fctl field of the specified command mode scsw is
392 * valid, zero otherwise.
393 */
394static inline int scsw_cmd_is_valid_sctl(union scsw *scsw)
395{
396 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
397}
398
399/**
400 * scsw_cmd_is_valid_eswf - check eswf field validity
401 * @scsw: pointer to scsw
402 *
403 * Return non-zero if the eswf field of the specified command mode scsw is
404 * valid, zero otherwise.
405 */
406static inline int scsw_cmd_is_valid_eswf(union scsw *scsw)
407{
408 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
409}
410
411/**
412 * scsw_cmd_is_valid_cc - check cc field validity
413 * @scsw: pointer to scsw
414 *
415 * Return non-zero if the cc field of the specified command mode scsw is
416 * valid, zero otherwise.
417 */
418static inline int scsw_cmd_is_valid_cc(union scsw *scsw)
419{
420 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
421 (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
422}
423
424/**
425 * scsw_cmd_is_valid_fmt - check fmt field validity
426 * @scsw: pointer to scsw
427 *
428 * Return non-zero if the fmt field of the specified command mode scsw is
429 * valid, zero otherwise.
430 */
431static inline int scsw_cmd_is_valid_fmt(union scsw *scsw)
432{
433 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
434}
435
436/**
437 * scsw_cmd_is_valid_pfch - check pfch field validity
438 * @scsw: pointer to scsw
439 *
440 * Return non-zero if the pfch field of the specified command mode scsw is
441 * valid, zero otherwise.
442 */
443static inline int scsw_cmd_is_valid_pfch(union scsw *scsw)
444{
445 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
446}
447
448/**
449 * scsw_cmd_is_valid_isic - check isic field validity
450 * @scsw: pointer to scsw
451 *
452 * Return non-zero if the isic field of the specified command mode scsw is
453 * valid, zero otherwise.
454 */
455static inline int scsw_cmd_is_valid_isic(union scsw *scsw)
456{
457 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
458}
459
460/**
461 * scsw_cmd_is_valid_alcc - check alcc field validity
462 * @scsw: pointer to scsw
463 *
464 * Return non-zero if the alcc field of the specified command mode scsw is
465 * valid, zero otherwise.
466 */
467static inline int scsw_cmd_is_valid_alcc(union scsw *scsw)
468{
469 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
470}
471
472/**
473 * scsw_cmd_is_valid_ssi - check ssi field validity
474 * @scsw: pointer to scsw
475 *
476 * Return non-zero if the ssi field of the specified command mode scsw is
477 * valid, zero otherwise.
478 */
479static inline int scsw_cmd_is_valid_ssi(union scsw *scsw)
480{
481 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
482}
483
484/**
485 * scsw_cmd_is_valid_zcc - check zcc field validity
486 * @scsw: pointer to scsw
487 *
488 * Return non-zero if the zcc field of the specified command mode scsw is
489 * valid, zero otherwise.
490 */
491static inline int scsw_cmd_is_valid_zcc(union scsw *scsw)
492{
493 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
494 (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS);
495}
496
497/**
498 * scsw_cmd_is_valid_ectl - check ectl field validity
499 * @scsw: pointer to scsw
500 *
501 * Return non-zero if the ectl field of the specified command mode scsw is
502 * valid, zero otherwise.
503 */
504static inline int scsw_cmd_is_valid_ectl(union scsw *scsw)
505{
506 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
507 !(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) &&
508 (scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS);
509}
510
511/**
512 * scsw_cmd_is_valid_pno - check pno field validity
513 * @scsw: pointer to scsw
514 *
515 * Return non-zero if the pno field of the specified command mode scsw is
516 * valid, zero otherwise.
517 */
518static inline int scsw_cmd_is_valid_pno(union scsw *scsw)
519{
520 return (scsw->cmd.fctl != 0) &&
521 (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
522 (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) ||
523 ((scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) &&
524 (scsw->cmd.actl & SCSW_ACTL_SUSPENDED)));
525}
526
527/**
528 * scsw_cmd_is_valid_fctl - check fctl field validity
529 * @scsw: pointer to scsw
530 *
531 * Return non-zero if the fctl field of the specified command mode scsw is
532 * valid, zero otherwise.
533 */
534static inline int scsw_cmd_is_valid_fctl(union scsw *scsw)
535{
536 /* Only valid if pmcw.dnv == 1*/
537 return 1;
538}
539
540/**
541 * scsw_cmd_is_valid_actl - check actl field validity
542 * @scsw: pointer to scsw
543 *
544 * Return non-zero if the actl field of the specified command mode scsw is
545 * valid, zero otherwise.
546 */
547static inline int scsw_cmd_is_valid_actl(union scsw *scsw)
548{
549 /* Only valid if pmcw.dnv == 1*/
550 return 1;
551}
552
553/**
554 * scsw_cmd_is_valid_stctl - check stctl field validity
555 * @scsw: pointer to scsw
556 *
557 * Return non-zero if the stctl field of the specified command mode scsw is
558 * valid, zero otherwise.
559 */
560static inline int scsw_cmd_is_valid_stctl(union scsw *scsw)
561{
562 /* Only valid if pmcw.dnv == 1*/
563 return 1;
564}
565
566/**
567 * scsw_cmd_is_valid_dstat - check dstat field validity
568 * @scsw: pointer to scsw
569 *
570 * Return non-zero if the dstat field of the specified command mode scsw is
571 * valid, zero otherwise.
572 */
573static inline int scsw_cmd_is_valid_dstat(union scsw *scsw)
574{
575 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
576 (scsw->cmd.cc != 3);
577}
578
579/**
580 * scsw_cmd_is_valid_cstat - check cstat field validity
581 * @scsw: pointer to scsw
582 *
583 * Return non-zero if the cstat field of the specified command mode scsw is
584 * valid, zero otherwise.
585 */
586static inline int scsw_cmd_is_valid_cstat(union scsw *scsw)
587{
588 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
589 (scsw->cmd.cc != 3);
590}
591
592/**
593 * scsw_tm_is_valid_key - check key field validity
594 * @scsw: pointer to scsw
595 *
596 * Return non-zero if the key field of the specified transport mode scsw is
597 * valid, zero otherwise.
598 */
599static inline int scsw_tm_is_valid_key(union scsw *scsw)
600{
601 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC);
602}
603
604/**
605 * scsw_tm_is_valid_eswf - check eswf field validity
606 * @scsw: pointer to scsw
607 *
608 * Return non-zero if the eswf field of the specified transport mode scsw is
609 * valid, zero otherwise.
610 */
611static inline int scsw_tm_is_valid_eswf(union scsw *scsw)
612{
613 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
614}
615
616/**
617 * scsw_tm_is_valid_cc - check cc field validity
618 * @scsw: pointer to scsw
619 *
620 * Return non-zero if the cc field of the specified transport mode scsw is
621 * valid, zero otherwise.
622 */
623static inline int scsw_tm_is_valid_cc(union scsw *scsw)
624{
625 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) &&
626 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
627}
628
629/**
630 * scsw_tm_is_valid_fmt - check fmt field validity
631 * @scsw: pointer to scsw
632 *
633 * Return non-zero if the fmt field of the specified transport mode scsw is
634 * valid, zero otherwise.
635 */
636static inline int scsw_tm_is_valid_fmt(union scsw *scsw)
637{
638 return 1;
639}
640
641/**
642 * scsw_tm_is_valid_x - check x field validity
643 * @scsw: pointer to scsw
644 *
645 * Return non-zero if the x field of the specified transport mode scsw is
646 * valid, zero otherwise.
647 */
648static inline int scsw_tm_is_valid_x(union scsw *scsw)
649{
650 return 1;
651}
652
653/**
654 * scsw_tm_is_valid_q - check q field validity
655 * @scsw: pointer to scsw
656 *
657 * Return non-zero if the q field of the specified transport mode scsw is
658 * valid, zero otherwise.
659 */
660static inline int scsw_tm_is_valid_q(union scsw *scsw)
661{
662 return 1;
663}
664
665/**
666 * scsw_tm_is_valid_ectl - check ectl field validity
667 * @scsw: pointer to scsw
668 *
669 * Return non-zero if the ectl field of the specified transport mode scsw is
670 * valid, zero otherwise.
671 */
672static inline int scsw_tm_is_valid_ectl(union scsw *scsw)
673{
674 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
675 !(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) &&
676 (scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS);
677}
678
679/**
680 * scsw_tm_is_valid_pno - check pno field validity
681 * @scsw: pointer to scsw
682 *
683 * Return non-zero if the pno field of the specified transport mode scsw is
684 * valid, zero otherwise.
685 */
686static inline int scsw_tm_is_valid_pno(union scsw *scsw)
687{
688 return (scsw->tm.fctl != 0) &&
689 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
690 (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) ||
691 ((scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) &&
692 (scsw->tm.actl & SCSW_ACTL_SUSPENDED)));
693}
694
695/**
696 * scsw_tm_is_valid_fctl - check fctl field validity
697 * @scsw: pointer to scsw
698 *
699 * Return non-zero if the fctl field of the specified transport mode scsw is
700 * valid, zero otherwise.
701 */
702static inline int scsw_tm_is_valid_fctl(union scsw *scsw)
703{
704 /* Only valid if pmcw.dnv == 1*/
705 return 1;
706}
707
708/**
709 * scsw_tm_is_valid_actl - check actl field validity
710 * @scsw: pointer to scsw
711 *
712 * Return non-zero if the actl field of the specified transport mode scsw is
713 * valid, zero otherwise.
714 */
715static inline int scsw_tm_is_valid_actl(union scsw *scsw)
716{
717 /* Only valid if pmcw.dnv == 1*/
718 return 1;
719}
720
721/**
722 * scsw_tm_is_valid_stctl - check stctl field validity
723 * @scsw: pointer to scsw
724 *
725 * Return non-zero if the stctl field of the specified transport mode scsw is
726 * valid, zero otherwise.
727 */
728static inline int scsw_tm_is_valid_stctl(union scsw *scsw)
729{
730 /* Only valid if pmcw.dnv == 1*/
731 return 1;
732}
733
734/**
735 * scsw_tm_is_valid_dstat - check dstat field validity
736 * @scsw: pointer to scsw
737 *
738 * Return non-zero if the dstat field of the specified transport mode scsw is
739 * valid, zero otherwise.
740 */
741static inline int scsw_tm_is_valid_dstat(union scsw *scsw)
742{
743 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
744 (scsw->tm.cc != 3);
745}
746
747/**
748 * scsw_tm_is_valid_cstat - check cstat field validity
749 * @scsw: pointer to scsw
750 *
751 * Return non-zero if the cstat field of the specified transport mode scsw is
752 * valid, zero otherwise.
753 */
754static inline int scsw_tm_is_valid_cstat(union scsw *scsw)
755{
756 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
757 (scsw->tm.cc != 3);
758}
759
760/**
761 * scsw_tm_is_valid_fcxs - check fcxs field validity
762 * @scsw: pointer to scsw
763 *
764 * Return non-zero if the fcxs field of the specified transport mode scsw is
765 * valid, zero otherwise.
766 */
767static inline int scsw_tm_is_valid_fcxs(union scsw *scsw)
768{
769 return 1;
770}
771
772/**
773 * scsw_tm_is_valid_schxs - check schxs field validity
774 * @scsw: pointer to scsw
775 *
776 * Return non-zero if the schxs field of the specified transport mode scsw is
777 * valid, zero otherwise.
778 */
779static inline int scsw_tm_is_valid_schxs(union scsw *scsw)
780{
781 return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK |
782 SCHN_STAT_INTF_CTRL_CHK |
783 SCHN_STAT_PROT_CHECK |
784 SCHN_STAT_CHN_DATA_CHK));
785}
786
787/**
788 * scsw_is_valid_actl - check actl field validity
789 * @scsw: pointer to scsw
790 *
791 * Return non-zero if the actl field of the specified scsw is valid,
792 * regardless of whether it is a transport mode or command mode scsw.
793 * Return zero if the field does not contain a valid value.
794 */
795static inline int scsw_is_valid_actl(union scsw *scsw)
796{
797 if (scsw_is_tm(scsw))
798 return scsw_tm_is_valid_actl(scsw);
799 else
800 return scsw_cmd_is_valid_actl(scsw);
801}
802
803/**
804 * scsw_is_valid_cc - check cc field validity
805 * @scsw: pointer to scsw
806 *
807 * Return non-zero if the cc field of the specified scsw is valid,
808 * regardless of whether it is a transport mode or command mode scsw.
809 * Return zero if the field does not contain a valid value.
810 */
811static inline int scsw_is_valid_cc(union scsw *scsw)
812{
813 if (scsw_is_tm(scsw))
814 return scsw_tm_is_valid_cc(scsw);
815 else
816 return scsw_cmd_is_valid_cc(scsw);
817}
818
819/**
820 * scsw_is_valid_cstat - check cstat field validity
821 * @scsw: pointer to scsw
822 *
823 * Return non-zero if the cstat field of the specified scsw is valid,
824 * regardless of whether it is a transport mode or command mode scsw.
825 * Return zero if the field does not contain a valid value.
826 */
827static inline int scsw_is_valid_cstat(union scsw *scsw)
828{
829 if (scsw_is_tm(scsw))
830 return scsw_tm_is_valid_cstat(scsw);
831 else
832 return scsw_cmd_is_valid_cstat(scsw);
833}
834
835/**
836 * scsw_is_valid_dstat - check dstat field validity
837 * @scsw: pointer to scsw
838 *
839 * Return non-zero if the dstat field of the specified scsw is valid,
840 * regardless of whether it is a transport mode or command mode scsw.
841 * Return zero if the field does not contain a valid value.
842 */
843static inline int scsw_is_valid_dstat(union scsw *scsw)
844{
845 if (scsw_is_tm(scsw))
846 return scsw_tm_is_valid_dstat(scsw);
847 else
848 return scsw_cmd_is_valid_dstat(scsw);
849}
850
851/**
852 * scsw_is_valid_ectl - check ectl field validity
853 * @scsw: pointer to scsw
854 *
855 * Return non-zero if the ectl field of the specified scsw is valid,
856 * regardless of whether it is a transport mode or command mode scsw.
857 * Return zero if the field does not contain a valid value.
858 */
859static inline int scsw_is_valid_ectl(union scsw *scsw)
860{
861 if (scsw_is_tm(scsw))
862 return scsw_tm_is_valid_ectl(scsw);
863 else
864 return scsw_cmd_is_valid_ectl(scsw);
865}
866
867/**
868 * scsw_is_valid_eswf - check eswf field validity
869 * @scsw: pointer to scsw
870 *
871 * Return non-zero if the eswf field of the specified scsw is valid,
872 * regardless of whether it is a transport mode or command mode scsw.
873 * Return zero if the field does not contain a valid value.
874 */
875static inline int scsw_is_valid_eswf(union scsw *scsw)
876{
877 if (scsw_is_tm(scsw))
878 return scsw_tm_is_valid_eswf(scsw);
879 else
880 return scsw_cmd_is_valid_eswf(scsw);
881}
882
883/**
884 * scsw_is_valid_fctl - check fctl field validity
885 * @scsw: pointer to scsw
886 *
887 * Return non-zero if the fctl field of the specified scsw is valid,
888 * regardless of whether it is a transport mode or command mode scsw.
889 * Return zero if the field does not contain a valid value.
890 */
891static inline int scsw_is_valid_fctl(union scsw *scsw)
892{
893 if (scsw_is_tm(scsw))
894 return scsw_tm_is_valid_fctl(scsw);
895 else
896 return scsw_cmd_is_valid_fctl(scsw);
897}
898
899/**
900 * scsw_is_valid_key - check key field validity
901 * @scsw: pointer to scsw
902 *
903 * Return non-zero if the key field of the specified scsw is valid,
904 * regardless of whether it is a transport mode or command mode scsw.
905 * Return zero if the field does not contain a valid value.
906 */
907static inline int scsw_is_valid_key(union scsw *scsw)
908{
909 if (scsw_is_tm(scsw))
910 return scsw_tm_is_valid_key(scsw);
911 else
912 return scsw_cmd_is_valid_key(scsw);
913}
914
915/**
916 * scsw_is_valid_pno - check pno field validity
917 * @scsw: pointer to scsw
918 *
919 * Return non-zero if the pno field of the specified scsw is valid,
920 * regardless of whether it is a transport mode or command mode scsw.
921 * Return zero if the field does not contain a valid value.
922 */
923static inline int scsw_is_valid_pno(union scsw *scsw)
924{
925 if (scsw_is_tm(scsw))
926 return scsw_tm_is_valid_pno(scsw);
927 else
928 return scsw_cmd_is_valid_pno(scsw);
929}
930
931/**
932 * scsw_is_valid_stctl - check stctl field validity
933 * @scsw: pointer to scsw
934 *
935 * Return non-zero if the stctl field of the specified scsw is valid,
936 * regardless of whether it is a transport mode or command mode scsw.
937 * Return zero if the field does not contain a valid value.
938 */
939static inline int scsw_is_valid_stctl(union scsw *scsw)
940{
941 if (scsw_is_tm(scsw))
942 return scsw_tm_is_valid_stctl(scsw);
943 else
944 return scsw_cmd_is_valid_stctl(scsw);
945}
946
947/**
948 * scsw_cmd_is_solicited - check for solicited scsw
949 * @scsw: pointer to scsw
950 *
951 * Return non-zero if the command mode scsw indicates that the associated
952 * status condition is solicited, zero if it is unsolicited.
953 */
954static inline int scsw_cmd_is_solicited(union scsw *scsw)
955{
956 return (scsw->cmd.cc != 0) || (scsw->cmd.stctl !=
957 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
958}
959
960/**
961 * scsw_tm_is_solicited - check for solicited scsw
962 * @scsw: pointer to scsw
963 *
964 * Return non-zero if the transport mode scsw indicates that the associated
965 * status condition is solicited, zero if it is unsolicited.
966 */
967static inline int scsw_tm_is_solicited(union scsw *scsw)
968{
969 return (scsw->tm.cc != 0) || (scsw->tm.stctl !=
970 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
971}
972
973/**
974 * scsw_is_solicited - check for solicited scsw
975 * @scsw: pointer to scsw
976 *
977 * Return non-zero if the transport or command mode scsw indicates that the
978 * associated status condition is solicited, zero if it is unsolicited.
979 */
980static inline int scsw_is_solicited(union scsw *scsw)
981{
982 if (scsw_is_tm(scsw))
983 return scsw_tm_is_solicited(scsw);
984 else
985 return scsw_cmd_is_solicited(scsw);
986}
987
988#endif /* _ASM_S390_SCSW_H_ */