include/asm/scsw.h

3  *  Helper functions for scsw access.
136  * union scsw - subchannel status word
141 union scsw {
225  * scsw_is_tm - check for transport mode scsw
226  * @scsw: pointer to scsw
228  * Return non-zero if the specified scsw is a transport mode scsw, zero
231 static inline int scsw_is_tm(union scsw *scsw)
233 	return css_general_characteristics.fcx && (scsw->tm.x == 1);
237  * scsw_key - return scsw key field
238  * @scsw: pointer to scsw
240  * Return the value of the key field of the specified scsw, regardless of
241  * whether it is a transport mode or command mode scsw.
243 static inline u32 scsw_key(union scsw *scsw)
245 	if (scsw_is_tm(scsw))
246 		return scsw->tm.key;
248 		return scsw->cmd.key;
252  * scsw_eswf - return scsw eswf field
253  * @scsw: pointer to scsw
255  * Return the value of the eswf field of the specified scsw, regardless of
256  * whether it is a transport mode or command mode scsw.
258 static inline u32 scsw_eswf(union scsw *scsw)
260 	if (scsw_is_tm(scsw))
261 		return scsw->tm.eswf;
263 		return scsw->cmd.eswf;
267  * scsw_cc - return scsw cc field
268  * @scsw: pointer to scsw
270  * Return the value of the cc field of the specified scsw, regardless of
271  * whether it is a transport mode or command mode scsw.
273 static inline u32 scsw_cc(union scsw *scsw)
275 	if (scsw_is_tm(scsw))
276 		return scsw->tm.cc;
278 		return scsw->cmd.cc;
282  * scsw_ectl - return scsw ectl field
283  * @scsw: pointer to scsw
285  * Return the value of the ectl field of the specified scsw, regardless of
286  * whether it is a transport mode or command mode scsw.
288 static inline u32 scsw_ectl(union scsw *scsw)
290 	if (scsw_is_tm(scsw))
291 		return scsw->tm.ectl;
293 		return scsw->cmd.ectl;
297  * scsw_pno - return scsw pno field
298  * @scsw: pointer to scsw
300  * Return the value of the pno field of the specified scsw, regardless of
301  * whether it is a transport mode or command mode scsw.
303 static inline u32 scsw_pno(union scsw *scsw)
305 	if (scsw_is_tm(scsw))
306 		return scsw->tm.pno;
308 		return scsw->cmd.pno;
312  * scsw_fctl - return scsw fctl field
313  * @scsw: pointer to scsw
315  * Return the value of the fctl field of the specified scsw, regardless of
316  * whether it is a transport mode or command mode scsw.
318 static inline u32 scsw_fctl(union scsw *scsw)
320 	if (scsw_is_tm(scsw))
321 		return scsw->tm.fctl;
323 		return scsw->cmd.fctl;
327  * scsw_actl - return scsw actl field
328  * @scsw: pointer to scsw
330  * Return the value of the actl field of the specified scsw, regardless of
331  * whether it is a transport mode or command mode scsw.
333 static inline u32 scsw_actl(union scsw *scsw)
335 	if (scsw_is_tm(scsw))
336 		return scsw->tm.actl;
338 		return scsw->cmd.actl;
342  * scsw_stctl - return scsw stctl field
343  * @scsw: pointer to scsw
345  * Return the value of the stctl field of the specified scsw, regardless of
346  * whether it is a transport mode or command mode scsw.
348 static inline u32 scsw_stctl(union scsw *scsw)
350 	if (scsw_is_tm(scsw))
351 		return scsw->tm.stctl;
353 		return scsw->cmd.stctl;
357  * scsw_dstat - return scsw dstat field
358  * @scsw: pointer to scsw
360  * Return the value of the dstat field of the specified scsw, regardless of
361  * whether it is a transport mode or command mode scsw.
363 static inline u32 scsw_dstat(union scsw *scsw)
365 	if (scsw_is_tm(scsw))
366 		return scsw->tm.dstat;
368 		return scsw->cmd.dstat;
372  * scsw_cstat - return scsw cstat field
373  * @scsw: pointer to scsw
375  * Return the value of the cstat field of the specified scsw, regardless of
376  * whether it is a transport mode or command mode scsw.
378 static inline u32 scsw_cstat(union scsw *scsw)
380 	if (scsw_is_tm(scsw))
381 		return scsw->tm.cstat;
383 		return scsw->cmd.cstat;
388  * @scsw: pointer to scsw
390  * Return non-zero if the key field of the specified command mode scsw is
393 static inline int scsw_cmd_is_valid_key(union scsw *scsw)
395 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
400  * @scsw: pointer to scsw
402  * Return non-zero if the sctl field of the specified command mode scsw is
405 static inline int scsw_cmd_is_valid_sctl(union scsw *scsw)
407 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
412  * @scsw: pointer to scsw
414  * Return non-zero if the eswf field of the specified command mode scsw is
417 static inline int scsw_cmd_is_valid_eswf(union scsw *scsw)
419 	return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
424  * @scsw: pointer to scsw
426  * Return non-zero if the cc field of the specified command mode scsw is
429 static inline int scsw_cmd_is_valid_cc(union scsw *scsw)
431 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
432 	       (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
437  * @scsw: pointer to scsw
439  * Return non-zero if the fmt field of the specified command mode scsw is
442 static inline int scsw_cmd_is_valid_fmt(union scsw *scsw)
444 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
449  * @scsw: pointer to scsw
451  * Return non-zero if the pfch field of the specified command mode scsw is
454 static inline int scsw_cmd_is_valid_pfch(union scsw *scsw)
456 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
461  * @scsw: pointer to scsw
463  * Return non-zero if the isic field of the specified command mode scsw is
466 static inline int scsw_cmd_is_valid_isic(union scsw *scsw)
468 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
473  * @scsw: pointer to scsw
475  * Return non-zero if the alcc field of the specified command mode scsw is
478 static inline int scsw_cmd_is_valid_alcc(union scsw *scsw)
480 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
485  * @scsw: pointer to scsw
487  * Return non-zero if the ssi field of the specified command mode scsw is
490 static inline int scsw_cmd_is_valid_ssi(union scsw *scsw)
492 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
497  * @scsw: pointer to scsw
499  * Return non-zero if the zcc field of the specified command mode scsw is
502 static inline int scsw_cmd_is_valid_zcc(union scsw *scsw)
504 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
505 	       (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS);
510  * @scsw: pointer to scsw
512  * Return non-zero if the ectl field of the specified command mode scsw is
515 static inline int scsw_cmd_is_valid_ectl(union scsw *scsw)
518 	if (!(scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND))
522 	if (!(scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS))
528 	if (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS)
536  * @scsw: pointer to scsw
538  * Return non-zero if the pno field of the specified command mode scsw is
541 static inline int scsw_cmd_is_valid_pno(union scsw *scsw)
544 	if (!scsw->cmd.fctl)
548 	if (!(scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND))
554 	if (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS))
558 	if (scsw->cmd.actl & SCSW_ACTL_SUSPENDED)
566  * @scsw: pointer to scsw
568  * Return non-zero if the fctl field of the specified command mode scsw is
571 static inline int scsw_cmd_is_valid_fctl(union scsw *scsw)
579  * @scsw: pointer to scsw
581  * Return non-zero if the actl field of the specified command mode scsw is
584 static inline int scsw_cmd_is_valid_actl(union scsw *scsw)
592  * @scsw: pointer to scsw
594  * Return non-zero if the stctl field of the specified command mode scsw is
597 static inline int scsw_cmd_is_valid_stctl(union scsw *scsw)
605  * @scsw: pointer to scsw
607  * Return non-zero if the dstat field of the specified command mode scsw is
610 static inline int scsw_cmd_is_valid_dstat(union scsw *scsw)
612 	return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
613 	       (scsw->cmd.cc != 3);
618  * @scsw: pointer to scsw
620  * Return non-zero if the cstat field of the specified command mode scsw is
623 static inline int scsw_cmd_is_valid_cstat(union scsw *scsw)
625 	return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
626 	       (scsw->cmd.cc != 3);
631  * @scsw: pointer to scsw
633  * Return non-zero if the key field of the specified transport mode scsw is
636 static inline int scsw_tm_is_valid_key(union scsw *scsw)
638 	return (scsw->tm.fctl & SCSW_FCTL_START_FUNC);
643  * @scsw: pointer to scsw
645  * Return non-zero if the eswf field of the specified transport mode scsw is
648 static inline int scsw_tm_is_valid_eswf(union scsw *scsw)
650 	return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
655  * @scsw: pointer to scsw
657  * Return non-zero if the cc field of the specified transport mode scsw is
660 static inline int scsw_tm_is_valid_cc(union scsw *scsw)
662 	return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) &&
663 	       (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
668  * @scsw: pointer to scsw
670  * Return non-zero if the fmt field of the specified transport mode scsw is
673 static inline int scsw_tm_is_valid_fmt(union scsw *scsw)
680  * @scsw: pointer to scsw
682  * Return non-zero if the x field of the specified transport mode scsw is
685 static inline int scsw_tm_is_valid_x(union scsw *scsw)
692  * @scsw: pointer to scsw
694  * Return non-zero if the q field of the specified transport mode scsw is
697 static inline int scsw_tm_is_valid_q(union scsw *scsw)
704  * @scsw: pointer to scsw
706  * Return non-zero if the ectl field of the specified transport mode scsw is
709 static inline int scsw_tm_is_valid_ectl(union scsw *scsw)
712 	if (!(scsw->tm.stctl & SCSW_STCTL_STATUS_PEND))
716 	if (!(scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS))
722 	if (scsw->tm.stctl & SCSW_STCTL_INTER_STATUS)
730  * @scsw: pointer to scsw
732  * Return non-zero if the pno field of the specified transport mode scsw is
735 static inline int scsw_tm_is_valid_pno(union scsw *scsw)
738 	if (!scsw->tm.fctl)
742 	if (!(scsw->tm.stctl & SCSW_STCTL_STATUS_PEND))
748 	if (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS))
752 	if (scsw->tm.actl & SCSW_ACTL_SUSPENDED)
760  * @scsw: pointer to scsw
762  * Return non-zero if the fctl field of the specified transport mode scsw is
765 static inline int scsw_tm_is_valid_fctl(union scsw *scsw)
773  * @scsw: pointer to scsw
775  * Return non-zero if the actl field of the specified transport mode scsw is
778 static inline int scsw_tm_is_valid_actl(union scsw *scsw)
786  * @scsw: pointer to scsw
788  * Return non-zero if the stctl field of the specified transport mode scsw is
791 static inline int scsw_tm_is_valid_stctl(union scsw *scsw)
799  * @scsw: pointer to scsw
801  * Return non-zero if the dstat field of the specified transport mode scsw is
804 static inline int scsw_tm_is_valid_dstat(union scsw *scsw)
806 	return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
807 	       (scsw->tm.cc != 3);
812  * @scsw: pointer to scsw
814  * Return non-zero if the cstat field of the specified transport mode scsw is
817 static inline int scsw_tm_is_valid_cstat(union scsw *scsw)
819 	return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
820 	       (scsw->tm.cc != 3);
825  * @scsw: pointer to scsw
827  * Return non-zero if the fcxs field of the specified transport mode scsw is
830 static inline int scsw_tm_is_valid_fcxs(union scsw *scsw)
837  * @scsw: pointer to scsw
839  * Return non-zero if the schxs field of the specified transport mode scsw is
842 static inline int scsw_tm_is_valid_schxs(union scsw *scsw)
844 	return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK |
852  * @scsw: pointer to scsw
854  * Return non-zero if the actl field of the specified scsw is valid,
855  * regardless of whether it is a transport mode or command mode scsw.
858 static inline int scsw_is_valid_actl(union scsw *scsw)
860 	if (scsw_is_tm(scsw))
861 		return scsw_tm_is_valid_actl(scsw);
863 		return scsw_cmd_is_valid_actl(scsw);
868  * @scsw: pointer to scsw
870  * Return non-zero if the cc field of the specified scsw is valid,
871  * regardless of whether it is a transport mode or command mode scsw.
874 static inline int scsw_is_valid_cc(union scsw *scsw)
876 	if (scsw_is_tm(scsw))
877 		return scsw_tm_is_valid_cc(scsw);
879 		return scsw_cmd_is_valid_cc(scsw);
884  * @scsw: pointer to scsw
886  * Return non-zero if the cstat field of the specified scsw is valid,
887  * regardless of whether it is a transport mode or command mode scsw.
890 static inline int scsw_is_valid_cstat(union scsw *scsw)
892 	if (scsw_is_tm(scsw))
893 		return scsw_tm_is_valid_cstat(scsw);
895 		return scsw_cmd_is_valid_cstat(scsw);
900  * @scsw: pointer to scsw
902  * Return non-zero if the dstat field of the specified scsw is valid,
903  * regardless of whether it is a transport mode or command mode scsw.
906 static inline int scsw_is_valid_dstat(union scsw *scsw)
908 	if (scsw_is_tm(scsw))
909 		return scsw_tm_is_valid_dstat(scsw);
911 		return scsw_cmd_is_valid_dstat(scsw);
916  * @scsw: pointer to scsw
918  * Return non-zero if the ectl field of the specified scsw is valid,
919  * regardless of whether it is a transport mode or command mode scsw.
922 static inline int scsw_is_valid_ectl(union scsw *scsw)
924 	if (scsw_is_tm(scsw))
925 		return scsw_tm_is_valid_ectl(scsw);
927 		return scsw_cmd_is_valid_ectl(scsw);
932  * @scsw: pointer to scsw
934  * Return non-zero if the eswf field of the specified scsw is valid,
935  * regardless of whether it is a transport mode or command mode scsw.
938 static inline int scsw_is_valid_eswf(union scsw *scsw)
940 	if (scsw_is_tm(scsw))
941 		return scsw_tm_is_valid_eswf(scsw);
943 		return scsw_cmd_is_valid_eswf(scsw);
948  * @scsw: pointer to scsw
950  * Return non-zero if the fctl field of the specified scsw is valid,
951  * regardless of whether it is a transport mode or command mode scsw.
954 static inline int scsw_is_valid_fctl(union scsw *scsw)
956 	if (scsw_is_tm(scsw))
957 		return scsw_tm_is_valid_fctl(scsw);
959 		return scsw_cmd_is_valid_fctl(scsw);
964  * @scsw: pointer to scsw
966  * Return non-zero if the key field of the specified scsw is valid,
967  * regardless of whether it is a transport mode or command mode scsw.
970 static inline int scsw_is_valid_key(union scsw *scsw)
972 	if (scsw_is_tm(scsw))
973 		return scsw_tm_is_valid_key(scsw);
975 		return scsw_cmd_is_valid_key(scsw);
980  * @scsw: pointer to scsw
982  * Return non-zero if the pno field of the specified scsw is valid,
983  * regardless of whether it is a transport mode or command mode scsw.
986 static inline int scsw_is_valid_pno(union scsw *scsw)
988 	if (scsw_is_tm(scsw))
989 		return scsw_tm_is_valid_pno(scsw);
991 		return scsw_cmd_is_valid_pno(scsw);
996  * @scsw: pointer to scsw
998  * Return non-zero if the stctl field of the specified scsw is valid,
999  * regardless of whether it is a transport mode or command mode scsw.
1002 static inline int scsw_is_valid_stctl(union scsw *scsw)
1004 	if (scsw_is_tm(scsw))
1005 		return scsw_tm_is_valid_stctl(scsw);
1007 		return scsw_cmd_is_valid_stctl(scsw);
1011  * scsw_cmd_is_solicited - check for solicited scsw
1012  * @scsw: pointer to scsw
1014  * Return non-zero if the command mode scsw indicates that the associated
1017 static inline int scsw_cmd_is_solicited(union scsw *scsw)
1019 	return (scsw->cmd.cc != 0) || (scsw->cmd.stctl !=
1024  * scsw_tm_is_solicited - check for solicited scsw
1025  * @scsw: pointer to scsw
1027  * Return non-zero if the transport mode scsw indicates that the associated
1030 static inline int scsw_tm_is_solicited(union scsw *scsw)
1032 	return (scsw->tm.cc != 0) || (scsw->tm.stctl !=
1037  * scsw_is_solicited - check for solicited scsw
1038  * @scsw: pointer to scsw
1040  * Return non-zero if the transport or command mode scsw indicates that the
1043 static inline int scsw_is_solicited(union scsw *scsw)
1045 	if (scsw_is_tm(scsw))
1046 		return scsw_tm_is_solicited(scsw);
1048 		return scsw_cmd_is_solicited(scsw);