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 */
scsw_is_tm(union scsw * scsw)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 */
scsw_key(union scsw * scsw)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 */
scsw_eswf(union scsw * scsw)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 */
scsw_cc(union scsw * scsw)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 */
scsw_ectl(union scsw * scsw)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 */
scsw_pno(union scsw * scsw)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 */
scsw_fctl(union scsw * scsw)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 */
scsw_actl(union scsw * scsw)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 */
scsw_stctl(union scsw * scsw)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 */
scsw_dstat(union scsw * scsw)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 */
scsw_cstat(union scsw * scsw)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 */
scsw_cmd_is_valid_key(union scsw * scsw)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 */
scsw_cmd_is_valid_sctl(union scsw * scsw)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 */
scsw_cmd_is_valid_eswf(union scsw * scsw)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 */
scsw_cmd_is_valid_cc(union scsw * scsw)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 */
scsw_cmd_is_valid_fmt(union scsw * scsw)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 */
scsw_cmd_is_valid_pfch(union scsw * scsw)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 */
scsw_cmd_is_valid_isic(union scsw * scsw)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 */
scsw_cmd_is_valid_alcc(union scsw * scsw)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 */
scsw_cmd_is_valid_ssi(union scsw * scsw)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 */
scsw_cmd_is_valid_zcc(union scsw * scsw)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 */
scsw_cmd_is_valid_ectl(union scsw * scsw)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 */
scsw_cmd_is_valid_pno(union scsw * scsw)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.stctl & SCSW_STCTL_INTER_STATUS) &&
529 (scsw->cmd.actl & SCSW_ACTL_SUSPENDED)));
530 }
531
532 /**
533 * scsw_cmd_is_valid_fctl - check fctl field validity
534 * @scsw: pointer to scsw
535 *
536 * Return non-zero if the fctl field of the specified command mode scsw is
537 * valid, zero otherwise.
538 */
scsw_cmd_is_valid_fctl(union scsw * scsw)539 static inline int scsw_cmd_is_valid_fctl(union scsw *scsw)
540 {
541 /* Only valid if pmcw.dnv == 1*/
542 return 1;
543 }
544
545 /**
546 * scsw_cmd_is_valid_actl - check actl field validity
547 * @scsw: pointer to scsw
548 *
549 * Return non-zero if the actl field of the specified command mode scsw is
550 * valid, zero otherwise.
551 */
scsw_cmd_is_valid_actl(union scsw * scsw)552 static inline int scsw_cmd_is_valid_actl(union scsw *scsw)
553 {
554 /* Only valid if pmcw.dnv == 1*/
555 return 1;
556 }
557
558 /**
559 * scsw_cmd_is_valid_stctl - check stctl field validity
560 * @scsw: pointer to scsw
561 *
562 * Return non-zero if the stctl field of the specified command mode scsw is
563 * valid, zero otherwise.
564 */
scsw_cmd_is_valid_stctl(union scsw * scsw)565 static inline int scsw_cmd_is_valid_stctl(union scsw *scsw)
566 {
567 /* Only valid if pmcw.dnv == 1*/
568 return 1;
569 }
570
571 /**
572 * scsw_cmd_is_valid_dstat - check dstat field validity
573 * @scsw: pointer to scsw
574 *
575 * Return non-zero if the dstat field of the specified command mode scsw is
576 * valid, zero otherwise.
577 */
scsw_cmd_is_valid_dstat(union scsw * scsw)578 static inline int scsw_cmd_is_valid_dstat(union scsw *scsw)
579 {
580 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
581 (scsw->cmd.cc != 3);
582 }
583
584 /**
585 * scsw_cmd_is_valid_cstat - check cstat field validity
586 * @scsw: pointer to scsw
587 *
588 * Return non-zero if the cstat field of the specified command mode scsw is
589 * valid, zero otherwise.
590 */
scsw_cmd_is_valid_cstat(union scsw * scsw)591 static inline int scsw_cmd_is_valid_cstat(union scsw *scsw)
592 {
593 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
594 (scsw->cmd.cc != 3);
595 }
596
597 /**
598 * scsw_tm_is_valid_key - check key field validity
599 * @scsw: pointer to scsw
600 *
601 * Return non-zero if the key field of the specified transport mode scsw is
602 * valid, zero otherwise.
603 */
scsw_tm_is_valid_key(union scsw * scsw)604 static inline int scsw_tm_is_valid_key(union scsw *scsw)
605 {
606 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC);
607 }
608
609 /**
610 * scsw_tm_is_valid_eswf - check eswf field validity
611 * @scsw: pointer to scsw
612 *
613 * Return non-zero if the eswf field of the specified transport mode scsw is
614 * valid, zero otherwise.
615 */
scsw_tm_is_valid_eswf(union scsw * scsw)616 static inline int scsw_tm_is_valid_eswf(union scsw *scsw)
617 {
618 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
619 }
620
621 /**
622 * scsw_tm_is_valid_cc - check cc field validity
623 * @scsw: pointer to scsw
624 *
625 * Return non-zero if the cc field of the specified transport mode scsw is
626 * valid, zero otherwise.
627 */
scsw_tm_is_valid_cc(union scsw * scsw)628 static inline int scsw_tm_is_valid_cc(union scsw *scsw)
629 {
630 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) &&
631 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
632 }
633
634 /**
635 * scsw_tm_is_valid_fmt - check fmt field validity
636 * @scsw: pointer to scsw
637 *
638 * Return non-zero if the fmt field of the specified transport mode scsw is
639 * valid, zero otherwise.
640 */
scsw_tm_is_valid_fmt(union scsw * scsw)641 static inline int scsw_tm_is_valid_fmt(union scsw *scsw)
642 {
643 return 1;
644 }
645
646 /**
647 * scsw_tm_is_valid_x - check x field validity
648 * @scsw: pointer to scsw
649 *
650 * Return non-zero if the x field of the specified transport mode scsw is
651 * valid, zero otherwise.
652 */
scsw_tm_is_valid_x(union scsw * scsw)653 static inline int scsw_tm_is_valid_x(union scsw *scsw)
654 {
655 return 1;
656 }
657
658 /**
659 * scsw_tm_is_valid_q - check q field validity
660 * @scsw: pointer to scsw
661 *
662 * Return non-zero if the q field of the specified transport mode scsw is
663 * valid, zero otherwise.
664 */
scsw_tm_is_valid_q(union scsw * scsw)665 static inline int scsw_tm_is_valid_q(union scsw *scsw)
666 {
667 return 1;
668 }
669
670 /**
671 * scsw_tm_is_valid_ectl - check ectl field validity
672 * @scsw: pointer to scsw
673 *
674 * Return non-zero if the ectl field of the specified transport mode scsw is
675 * valid, zero otherwise.
676 */
scsw_tm_is_valid_ectl(union scsw * scsw)677 static inline int scsw_tm_is_valid_ectl(union scsw *scsw)
678 {
679 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
680 !(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) &&
681 (scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS);
682 }
683
684 /**
685 * scsw_tm_is_valid_pno - check pno field validity
686 * @scsw: pointer to scsw
687 *
688 * Return non-zero if the pno field of the specified transport mode scsw is
689 * valid, zero otherwise.
690 */
scsw_tm_is_valid_pno(union scsw * scsw)691 static inline int scsw_tm_is_valid_pno(union scsw *scsw)
692 {
693 return (scsw->tm.fctl != 0) &&
694 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
695 (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) ||
696 ((scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) &&
697 (scsw->tm.actl & SCSW_ACTL_SUSPENDED)));
698 }
699
700 /**
701 * scsw_tm_is_valid_fctl - check fctl field validity
702 * @scsw: pointer to scsw
703 *
704 * Return non-zero if the fctl field of the specified transport mode scsw is
705 * valid, zero otherwise.
706 */
scsw_tm_is_valid_fctl(union scsw * scsw)707 static inline int scsw_tm_is_valid_fctl(union scsw *scsw)
708 {
709 /* Only valid if pmcw.dnv == 1*/
710 return 1;
711 }
712
713 /**
714 * scsw_tm_is_valid_actl - check actl field validity
715 * @scsw: pointer to scsw
716 *
717 * Return non-zero if the actl field of the specified transport mode scsw is
718 * valid, zero otherwise.
719 */
scsw_tm_is_valid_actl(union scsw * scsw)720 static inline int scsw_tm_is_valid_actl(union scsw *scsw)
721 {
722 /* Only valid if pmcw.dnv == 1*/
723 return 1;
724 }
725
726 /**
727 * scsw_tm_is_valid_stctl - check stctl field validity
728 * @scsw: pointer to scsw
729 *
730 * Return non-zero if the stctl field of the specified transport mode scsw is
731 * valid, zero otherwise.
732 */
scsw_tm_is_valid_stctl(union scsw * scsw)733 static inline int scsw_tm_is_valid_stctl(union scsw *scsw)
734 {
735 /* Only valid if pmcw.dnv == 1*/
736 return 1;
737 }
738
739 /**
740 * scsw_tm_is_valid_dstat - check dstat field validity
741 * @scsw: pointer to scsw
742 *
743 * Return non-zero if the dstat field of the specified transport mode scsw is
744 * valid, zero otherwise.
745 */
scsw_tm_is_valid_dstat(union scsw * scsw)746 static inline int scsw_tm_is_valid_dstat(union scsw *scsw)
747 {
748 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
749 (scsw->tm.cc != 3);
750 }
751
752 /**
753 * scsw_tm_is_valid_cstat - check cstat field validity
754 * @scsw: pointer to scsw
755 *
756 * Return non-zero if the cstat field of the specified transport mode scsw is
757 * valid, zero otherwise.
758 */
scsw_tm_is_valid_cstat(union scsw * scsw)759 static inline int scsw_tm_is_valid_cstat(union scsw *scsw)
760 {
761 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
762 (scsw->tm.cc != 3);
763 }
764
765 /**
766 * scsw_tm_is_valid_fcxs - check fcxs field validity
767 * @scsw: pointer to scsw
768 *
769 * Return non-zero if the fcxs field of the specified transport mode scsw is
770 * valid, zero otherwise.
771 */
scsw_tm_is_valid_fcxs(union scsw * scsw)772 static inline int scsw_tm_is_valid_fcxs(union scsw *scsw)
773 {
774 return 1;
775 }
776
777 /**
778 * scsw_tm_is_valid_schxs - check schxs field validity
779 * @scsw: pointer to scsw
780 *
781 * Return non-zero if the schxs field of the specified transport mode scsw is
782 * valid, zero otherwise.
783 */
scsw_tm_is_valid_schxs(union scsw * scsw)784 static inline int scsw_tm_is_valid_schxs(union scsw *scsw)
785 {
786 return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK |
787 SCHN_STAT_INTF_CTRL_CHK |
788 SCHN_STAT_PROT_CHECK |
789 SCHN_STAT_CHN_DATA_CHK));
790 }
791
792 /**
793 * scsw_is_valid_actl - check actl field validity
794 * @scsw: pointer to scsw
795 *
796 * Return non-zero if the actl field of the specified scsw is valid,
797 * regardless of whether it is a transport mode or command mode scsw.
798 * Return zero if the field does not contain a valid value.
799 */
scsw_is_valid_actl(union scsw * scsw)800 static inline int scsw_is_valid_actl(union scsw *scsw)
801 {
802 if (scsw_is_tm(scsw))
803 return scsw_tm_is_valid_actl(scsw);
804 else
805 return scsw_cmd_is_valid_actl(scsw);
806 }
807
808 /**
809 * scsw_is_valid_cc - check cc field validity
810 * @scsw: pointer to scsw
811 *
812 * Return non-zero if the cc field of the specified scsw is valid,
813 * regardless of whether it is a transport mode or command mode scsw.
814 * Return zero if the field does not contain a valid value.
815 */
scsw_is_valid_cc(union scsw * scsw)816 static inline int scsw_is_valid_cc(union scsw *scsw)
817 {
818 if (scsw_is_tm(scsw))
819 return scsw_tm_is_valid_cc(scsw);
820 else
821 return scsw_cmd_is_valid_cc(scsw);
822 }
823
824 /**
825 * scsw_is_valid_cstat - check cstat field validity
826 * @scsw: pointer to scsw
827 *
828 * Return non-zero if the cstat field of the specified scsw is valid,
829 * regardless of whether it is a transport mode or command mode scsw.
830 * Return zero if the field does not contain a valid value.
831 */
scsw_is_valid_cstat(union scsw * scsw)832 static inline int scsw_is_valid_cstat(union scsw *scsw)
833 {
834 if (scsw_is_tm(scsw))
835 return scsw_tm_is_valid_cstat(scsw);
836 else
837 return scsw_cmd_is_valid_cstat(scsw);
838 }
839
840 /**
841 * scsw_is_valid_dstat - check dstat field validity
842 * @scsw: pointer to scsw
843 *
844 * Return non-zero if the dstat field of the specified scsw is valid,
845 * regardless of whether it is a transport mode or command mode scsw.
846 * Return zero if the field does not contain a valid value.
847 */
scsw_is_valid_dstat(union scsw * scsw)848 static inline int scsw_is_valid_dstat(union scsw *scsw)
849 {
850 if (scsw_is_tm(scsw))
851 return scsw_tm_is_valid_dstat(scsw);
852 else
853 return scsw_cmd_is_valid_dstat(scsw);
854 }
855
856 /**
857 * scsw_is_valid_ectl - check ectl field validity
858 * @scsw: pointer to scsw
859 *
860 * Return non-zero if the ectl field of the specified scsw is valid,
861 * regardless of whether it is a transport mode or command mode scsw.
862 * Return zero if the field does not contain a valid value.
863 */
scsw_is_valid_ectl(union scsw * scsw)864 static inline int scsw_is_valid_ectl(union scsw *scsw)
865 {
866 if (scsw_is_tm(scsw))
867 return scsw_tm_is_valid_ectl(scsw);
868 else
869 return scsw_cmd_is_valid_ectl(scsw);
870 }
871
872 /**
873 * scsw_is_valid_eswf - check eswf field validity
874 * @scsw: pointer to scsw
875 *
876 * Return non-zero if the eswf field of the specified scsw is valid,
877 * regardless of whether it is a transport mode or command mode scsw.
878 * Return zero if the field does not contain a valid value.
879 */
scsw_is_valid_eswf(union scsw * scsw)880 static inline int scsw_is_valid_eswf(union scsw *scsw)
881 {
882 if (scsw_is_tm(scsw))
883 return scsw_tm_is_valid_eswf(scsw);
884 else
885 return scsw_cmd_is_valid_eswf(scsw);
886 }
887
888 /**
889 * scsw_is_valid_fctl - check fctl field validity
890 * @scsw: pointer to scsw
891 *
892 * Return non-zero if the fctl field of the specified scsw is valid,
893 * regardless of whether it is a transport mode or command mode scsw.
894 * Return zero if the field does not contain a valid value.
895 */
scsw_is_valid_fctl(union scsw * scsw)896 static inline int scsw_is_valid_fctl(union scsw *scsw)
897 {
898 if (scsw_is_tm(scsw))
899 return scsw_tm_is_valid_fctl(scsw);
900 else
901 return scsw_cmd_is_valid_fctl(scsw);
902 }
903
904 /**
905 * scsw_is_valid_key - check key field validity
906 * @scsw: pointer to scsw
907 *
908 * Return non-zero if the key field of the specified scsw is valid,
909 * regardless of whether it is a transport mode or command mode scsw.
910 * Return zero if the field does not contain a valid value.
911 */
scsw_is_valid_key(union scsw * scsw)912 static inline int scsw_is_valid_key(union scsw *scsw)
913 {
914 if (scsw_is_tm(scsw))
915 return scsw_tm_is_valid_key(scsw);
916 else
917 return scsw_cmd_is_valid_key(scsw);
918 }
919
920 /**
921 * scsw_is_valid_pno - check pno field validity
922 * @scsw: pointer to scsw
923 *
924 * Return non-zero if the pno field of the specified scsw is valid,
925 * regardless of whether it is a transport mode or command mode scsw.
926 * Return zero if the field does not contain a valid value.
927 */
scsw_is_valid_pno(union scsw * scsw)928 static inline int scsw_is_valid_pno(union scsw *scsw)
929 {
930 if (scsw_is_tm(scsw))
931 return scsw_tm_is_valid_pno(scsw);
932 else
933 return scsw_cmd_is_valid_pno(scsw);
934 }
935
936 /**
937 * scsw_is_valid_stctl - check stctl field validity
938 * @scsw: pointer to scsw
939 *
940 * Return non-zero if the stctl field of the specified scsw is valid,
941 * regardless of whether it is a transport mode or command mode scsw.
942 * Return zero if the field does not contain a valid value.
943 */
scsw_is_valid_stctl(union scsw * scsw)944 static inline int scsw_is_valid_stctl(union scsw *scsw)
945 {
946 if (scsw_is_tm(scsw))
947 return scsw_tm_is_valid_stctl(scsw);
948 else
949 return scsw_cmd_is_valid_stctl(scsw);
950 }
951
952 /**
953 * scsw_cmd_is_solicited - check for solicited scsw
954 * @scsw: pointer to scsw
955 *
956 * Return non-zero if the command mode scsw indicates that the associated
957 * status condition is solicited, zero if it is unsolicited.
958 */
scsw_cmd_is_solicited(union scsw * scsw)959 static inline int scsw_cmd_is_solicited(union scsw *scsw)
960 {
961 return (scsw->cmd.cc != 0) || (scsw->cmd.stctl !=
962 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
963 }
964
965 /**
966 * scsw_tm_is_solicited - check for solicited scsw
967 * @scsw: pointer to scsw
968 *
969 * Return non-zero if the transport mode scsw indicates that the associated
970 * status condition is solicited, zero if it is unsolicited.
971 */
scsw_tm_is_solicited(union scsw * scsw)972 static inline int scsw_tm_is_solicited(union scsw *scsw)
973 {
974 return (scsw->tm.cc != 0) || (scsw->tm.stctl !=
975 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
976 }
977
978 /**
979 * scsw_is_solicited - check for solicited scsw
980 * @scsw: pointer to scsw
981 *
982 * Return non-zero if the transport or command mode scsw indicates that the
983 * associated status condition is solicited, zero if it is unsolicited.
984 */
scsw_is_solicited(union scsw * scsw)985 static inline int scsw_is_solicited(union scsw *scsw)
986 {
987 if (scsw_is_tm(scsw))
988 return scsw_tm_is_solicited(scsw);
989 else
990 return scsw_cmd_is_solicited(scsw);
991 }
992
993 #endif /* _ASM_S390_SCSW_H_ */
994
