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 */
38 struct 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 */
80 struct 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 */
107 union 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 */
scsw_is_tm(union scsw * scsw)188 static 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 */
scsw_key(union scsw * scsw)200 static 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 */
scsw_eswf(union scsw * scsw)215 static 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 */
scsw_cc(union scsw * scsw)230 static 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 */
scsw_ectl(union scsw * scsw)245 static 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 */
scsw_pno(union scsw * scsw)260 static 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 */
scsw_fctl(union scsw * scsw)275 static 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 */
scsw_actl(union scsw * scsw)290 static 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 */
scsw_stctl(union scsw * scsw)305 static 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 */
scsw_dstat(union scsw * scsw)320 static 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 */
scsw_cstat(union scsw * scsw)335 static 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 */
scsw_cmd_is_valid_key(union scsw * scsw)350 static 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 */
scsw_cmd_is_valid_sctl(union scsw * scsw)362 static 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 */
scsw_cmd_is_valid_eswf(union scsw * scsw)374 static 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 */
scsw_cmd_is_valid_cc(union scsw * scsw)386 static 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 */
scsw_cmd_is_valid_fmt(union scsw * scsw)399 static 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 */
scsw_cmd_is_valid_pfch(union scsw * scsw)411 static 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 */
scsw_cmd_is_valid_isic(union scsw * scsw)423 static 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 */
scsw_cmd_is_valid_alcc(union scsw * scsw)435 static 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 */
scsw_cmd_is_valid_ssi(union scsw * scsw)447 static 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 */
scsw_cmd_is_valid_zcc(union scsw * scsw)459 static 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 */
scsw_cmd_is_valid_ectl(union scsw * scsw)472 static 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 */
scsw_cmd_is_valid_pno(union scsw * scsw)486 static 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 */
scsw_cmd_is_valid_fctl(union scsw * scsw)502 static 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 */
scsw_cmd_is_valid_actl(union scsw * scsw)515 static 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 */
scsw_cmd_is_valid_stctl(union scsw * scsw)528 static 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 */
scsw_cmd_is_valid_dstat(union scsw * scsw)541 static 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 */
scsw_cmd_is_valid_cstat(union scsw * scsw)554 static 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 */
scsw_tm_is_valid_key(union scsw * scsw)567 static 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 */
scsw_tm_is_valid_eswf(union scsw * scsw)579 static 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 */
scsw_tm_is_valid_cc(union scsw * scsw)591 static 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 */
scsw_tm_is_valid_fmt(union scsw * scsw)604 static 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 */
scsw_tm_is_valid_x(union scsw * scsw)616 static 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 */
scsw_tm_is_valid_q(union scsw * scsw)628 static 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 */
scsw_tm_is_valid_ectl(union scsw * scsw)640 static 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 */
scsw_tm_is_valid_pno(union scsw * scsw)654 static 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 */
scsw_tm_is_valid_fctl(union scsw * scsw)670 static 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 */
scsw_tm_is_valid_actl(union scsw * scsw)683 static 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 */
scsw_tm_is_valid_stctl(union scsw * scsw)696 static 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 */
scsw_tm_is_valid_dstat(union scsw * scsw)709 static 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 */
scsw_tm_is_valid_cstat(union scsw * scsw)722 static 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 */
scsw_tm_is_valid_fcxs(union scsw * scsw)735 static 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 */
scsw_tm_is_valid_schxs(union scsw * scsw)747 static 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 */
scsw_is_valid_actl(union scsw * scsw)763 static 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 */
scsw_is_valid_cc(union scsw * scsw)779 static 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 */
scsw_is_valid_cstat(union scsw * scsw)795 static 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 */
scsw_is_valid_dstat(union scsw * scsw)811 static 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 */
scsw_is_valid_ectl(union scsw * scsw)827 static 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 */
scsw_is_valid_eswf(union scsw * scsw)843 static 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 */
scsw_is_valid_fctl(union scsw * scsw)859 static 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 */
scsw_is_valid_key(union scsw * scsw)875 static 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 */
scsw_is_valid_pno(union scsw * scsw)891 static 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 */
scsw_is_valid_stctl(union scsw * scsw)907 static 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 */
scsw_cmd_is_solicited(union scsw * scsw)922 static 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 */
scsw_tm_is_solicited(union scsw * scsw)935 static 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 */
scsw_is_solicited(union scsw * scsw)948 static 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_ */
957