1 /* SPDX-License-Identifier: GPL-2.0 */
14 #include <asm/dma-types.h>
18  * struct cmd_scsw - command-mode subchannel status word
25  * @isic: initial-status interruption control
26  * @alcc: address-limit checking control
27  * @ssi: suppress-suspended interruption
28  * @zcc: zero condition code
64  * struct tm_scsw - transport-mode subchannel status word
69  * @x: IRB-format control
70  * @q: interrogate-complete
80  * @schxs: subchannel-extended status
106  * struct eadm_scsw - subchannel status word for eadm subchannels
136  * union scsw - subchannel status word
137  * @cmd: command-mode SCSW
138  * @tm: transport-mode SCSW
225  * scsw_is_tm - check for transport mode scsw
228  * Return non-zero if the specified scsw is a transport mode scsw, zero
233 	return css_general_characteristics.fcx && (scsw->tm.x == 1);  in scsw_is_tm()
237  * scsw_key - return scsw key field
246 		return scsw->tm.key;  in scsw_key()
248 		return scsw->cmd.key;  in scsw_key()
252  * scsw_eswf - return scsw eswf field
261 		return scsw->tm.eswf;  in scsw_eswf()
263 		return scsw->cmd.eswf;  in scsw_eswf()
267  * scsw_cc - return scsw cc field
276 		return scsw->tm.cc;  in scsw_cc()
278 		return scsw->cmd.cc;  in scsw_cc()
282  * scsw_ectl - return scsw ectl field
291 		return scsw->tm.ectl;  in scsw_ectl()
293 		return scsw->cmd.ectl;  in scsw_ectl()
297  * scsw_pno - return scsw pno field
306 		return scsw->tm.pno;  in scsw_pno()
308 		return scsw->cmd.pno;  in scsw_pno()
312  * scsw_fctl - return scsw fctl field
321 		return scsw->tm.fctl;  in scsw_fctl()
323 		return scsw->cmd.fctl;  in scsw_fctl()
327  * scsw_actl - return scsw actl field
336 		return scsw->tm.actl;  in scsw_actl()
338 		return scsw->cmd.actl;  in scsw_actl()
342  * scsw_stctl - return scsw stctl field
351 		return scsw->tm.stctl;  in scsw_stctl()
353 		return scsw->cmd.stctl;  in scsw_stctl()
357  * scsw_dstat - return scsw dstat field
366 		return scsw->tm.dstat;  in scsw_dstat()
368 		return scsw->cmd.dstat;  in scsw_dstat()
372  * scsw_cstat - return scsw cstat field
381 		return scsw->tm.cstat;  in scsw_cstat()
383 		return scsw->cmd.cstat;  in scsw_cstat()
387  * scsw_cmd_is_valid_key - check key field validity
390  * Return non-zero if the key field of the specified command mode scsw is
391  * valid, zero otherwise.
395 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);  in scsw_cmd_is_valid_key()
399  * scsw_cmd_is_valid_sctl - check sctl field validity
402  * Return non-zero if the sctl field of the specified command mode scsw is
403  * valid, zero otherwise.
407 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);  in scsw_cmd_is_valid_sctl()
411  * scsw_cmd_is_valid_eswf - check eswf field validity
414  * Return non-zero if the eswf field of the specified command mode scsw is
415  * valid, zero otherwise.
419 	return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);  in scsw_cmd_is_valid_eswf()
423  * scsw_cmd_is_valid_cc - check cc field validity
426  * Return non-zero if the cc field of the specified command mode scsw is
427  * valid, zero otherwise.
431 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&  in scsw_cmd_is_valid_cc()
432 	       (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);  in scsw_cmd_is_valid_cc()
436  * scsw_cmd_is_valid_fmt - check fmt field validity
439  * Return non-zero if the fmt field of the specified command mode scsw is
440  * valid, zero otherwise.
444 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);  in scsw_cmd_is_valid_fmt()
448  * scsw_cmd_is_valid_pfch - check pfch field validity
451  * Return non-zero if the pfch field of the specified command mode scsw is
452  * valid, zero otherwise.
456 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);  in scsw_cmd_is_valid_pfch()
460  * scsw_cmd_is_valid_isic - check isic field validity
463  * Return non-zero if the isic field of the specified command mode scsw is
464  * valid, zero otherwise.
468 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);  in scsw_cmd_is_valid_isic()
472  * scsw_cmd_is_valid_alcc - check alcc field validity
475  * Return non-zero if the alcc field of the specified command mode scsw is
476  * valid, zero otherwise.
480 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);  in scsw_cmd_is_valid_alcc()
484  * scsw_cmd_is_valid_ssi - check ssi field validity
487  * Return non-zero if the ssi field of the specified command mode scsw is
488  * valid, zero otherwise.
492 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);  in scsw_cmd_is_valid_ssi()
496  * scsw_cmd_is_valid_zcc - check zcc field validity
499  * Return non-zero if the zcc field of the specified command mode scsw is
500  * valid, zero otherwise.
504 	return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&  in scsw_cmd_is_valid_zcc()
505 	       (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS);  in scsw_cmd_is_valid_zcc()
509  * scsw_cmd_is_valid_ectl - check ectl field validity
512  * Return non-zero if the ectl field of the specified command mode scsw is
513  * valid, zero otherwise.
518 	if (!(scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND))  in scsw_cmd_is_valid_ectl()
522 	if (!(scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS))  in scsw_cmd_is_valid_ectl()
528 	if (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS)  in scsw_cmd_is_valid_ectl()
535  * scsw_cmd_is_valid_pno - check pno field validity
538  * Return non-zero if the pno field of the specified command mode scsw is
539  * valid, zero otherwise.
544 	if (!scsw->cmd.fctl)  in scsw_cmd_is_valid_pno()
548 	if (!(scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND))  in scsw_cmd_is_valid_pno()
554 	if (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS))  in scsw_cmd_is_valid_pno()
558 	if (scsw->cmd.actl & SCSW_ACTL_SUSPENDED)  in scsw_cmd_is_valid_pno()
565  * scsw_cmd_is_valid_fctl - check fctl field validity
568  * Return non-zero if the fctl field of the specified command mode scsw is
569  * valid, zero otherwise.
578  * scsw_cmd_is_valid_actl - check actl field validity
581  * Return non-zero if the actl field of the specified command mode scsw is
582  * valid, zero otherwise.
591  * scsw_cmd_is_valid_stctl - check stctl field validity
594  * Return non-zero if the stctl field of the specified command mode scsw is
595  * valid, zero otherwise.
604  * scsw_cmd_is_valid_dstat - check dstat field validity
607  * Return non-zero if the dstat field of the specified command mode scsw is
608  * valid, zero otherwise.
612 	return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&  in scsw_cmd_is_valid_dstat()
613 	       (scsw->cmd.cc != 3);  in scsw_cmd_is_valid_dstat()
617  * scsw_cmd_is_valid_cstat - check cstat field validity
620  * Return non-zero if the cstat field of the specified command mode scsw is
621  * valid, zero otherwise.
625 	return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&  in scsw_cmd_is_valid_cstat()
626 	       (scsw->cmd.cc != 3);  in scsw_cmd_is_valid_cstat()
630  * scsw_tm_is_valid_key - check key field validity
633  * Return non-zero if the key field of the specified transport mode scsw is
634  * valid, zero otherwise.
638 	return (scsw->tm.fctl & SCSW_FCTL_START_FUNC);  in scsw_tm_is_valid_key()
642  * scsw_tm_is_valid_eswf - check eswf field validity
645  * Return non-zero if the eswf field of the specified transport mode scsw is
646  * valid, zero otherwise.
650 	return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);  in scsw_tm_is_valid_eswf()
654  * scsw_tm_is_valid_cc - check cc field validity
657  * Return non-zero if the cc field of the specified transport mode scsw is
658  * valid, zero otherwise.
662 	return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) &&  in scsw_tm_is_valid_cc()
663 	       (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);  in scsw_tm_is_valid_cc()
667  * scsw_tm_is_valid_fmt - check fmt field validity
670  * Return non-zero if the fmt field of the specified transport mode scsw is
671  * valid, zero otherwise.
679  * scsw_tm_is_valid_x - check x field validity
682  * Return non-zero if the x field of the specified transport mode scsw is
683  * valid, zero otherwise.
691  * scsw_tm_is_valid_q - check q field validity
694  * Return non-zero if the q field of the specified transport mode scsw is
695  * valid, zero otherwise.
703  * scsw_tm_is_valid_ectl - check ectl field validity
706  * Return non-zero if the ectl field of the specified transport mode scsw is
707  * valid, zero otherwise.
712 	if (!(scsw->tm.stctl & SCSW_STCTL_STATUS_PEND))  in scsw_tm_is_valid_ectl()
716 	if (!(scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS))  in scsw_tm_is_valid_ectl()
722 	if (scsw->tm.stctl & SCSW_STCTL_INTER_STATUS)  in scsw_tm_is_valid_ectl()
729  * scsw_tm_is_valid_pno - check pno field validity
732  * Return non-zero if the pno field of the specified transport mode scsw is
733  * valid, zero otherwise.
738 	if (!scsw->tm.fctl)  in scsw_tm_is_valid_pno()
742 	if (!(scsw->tm.stctl & SCSW_STCTL_STATUS_PEND))  in scsw_tm_is_valid_pno()
748 	if (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS))  in scsw_tm_is_valid_pno()
752 	if (scsw->tm.actl & SCSW_ACTL_SUSPENDED)  in scsw_tm_is_valid_pno()
759  * scsw_tm_is_valid_fctl - check fctl field validity
762  * Return non-zero if the fctl field of the specified transport mode scsw is
763  * valid, zero otherwise.
772  * scsw_tm_is_valid_actl - check actl field validity
775  * Return non-zero if the actl field of the specified transport mode scsw is
776  * valid, zero otherwise.
785  * scsw_tm_is_valid_stctl - check stctl field validity
788  * Return non-zero if the stctl field of the specified transport mode scsw is
789  * valid, zero otherwise.
798  * scsw_tm_is_valid_dstat - check dstat field validity
801  * Return non-zero if the dstat field of the specified transport mode scsw is
802  * valid, zero otherwise.
806 	return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&  in scsw_tm_is_valid_dstat()
807 	       (scsw->tm.cc != 3);  in scsw_tm_is_valid_dstat()
811  * scsw_tm_is_valid_cstat - check cstat field validity
814  * Return non-zero if the cstat field of the specified transport mode scsw is
815  * valid, zero otherwise.
819 	return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&  in scsw_tm_is_valid_cstat()
820 	       (scsw->tm.cc != 3);  in scsw_tm_is_valid_cstat()
824  * scsw_tm_is_valid_fcxs - check fcxs field validity
827  * Return non-zero if the fcxs field of the specified transport mode scsw is
828  * valid, zero otherwise.
836  * scsw_tm_is_valid_schxs - check schxs field validity
839  * Return non-zero if the schxs field of the specified transport mode scsw is
840  * valid, zero otherwise.
844 	return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK |  in scsw_tm_is_valid_schxs()
851  * scsw_is_valid_actl - check actl field validity
854  * Return non-zero if the actl field of the specified scsw is valid,
856  * Return zero if the field does not contain a valid value.
867  * scsw_is_valid_cc - check cc field validity
870  * Return non-zero if the cc field of the specified scsw is valid,
872  * Return zero if the field does not contain a valid value.
883  * scsw_is_valid_cstat - check cstat field validity
886  * Return non-zero if the cstat field of the specified scsw is valid,
888  * Return zero if the field does not contain a valid value.
899  * scsw_is_valid_dstat - check dstat field validity
902  * Return non-zero if the dstat field of the specified scsw is valid,
904  * Return zero if the field does not contain a valid value.
915  * scsw_is_valid_ectl - check ectl field validity
918  * Return non-zero if the ectl field of the specified scsw is valid,
920  * Return zero if the field does not contain a valid value.
931  * scsw_is_valid_eswf - check eswf field validity
934  * Return non-zero if the eswf field of the specified scsw is valid,
936  * Return zero if the field does not contain a valid value.
947  * scsw_is_valid_fctl - check fctl field validity
950  * Return non-zero if the fctl field of the specified scsw is valid,
952  * Return zero if the field does not contain a valid value.
963  * scsw_is_valid_key - check key field validity
966  * Return non-zero if the key field of the specified scsw is valid,
968  * Return zero if the field does not contain a valid value.
979  * scsw_is_valid_pno - check pno field validity
982  * Return non-zero if the pno field of the specified scsw is valid,
984  * Return zero if the field does not contain a valid value.
995  * scsw_is_valid_stctl - check stctl field validity
998  * Return non-zero if the stctl field of the specified scsw is valid,
1000  * Return zero if the field does not contain a valid value.
1011  * scsw_cmd_is_solicited - check for solicited scsw
1014  * Return non-zero if the command mode scsw indicates that the associated
1015  * status condition is solicited, zero if it is unsolicited.
1019 	return (scsw->cmd.cc != 0) || (scsw->cmd.stctl !=  in scsw_cmd_is_solicited()
1024  * scsw_tm_is_solicited - check for solicited scsw
1027  * Return non-zero if the transport mode scsw indicates that the associated
1028  * status condition is solicited, zero if it is unsolicited.
1032 	return (scsw->tm.cc != 0) || (scsw->tm.stctl !=  in scsw_tm_is_solicited()
1037  * scsw_is_solicited - check for solicited scsw
1040  * Return non-zero if the transport or command mode scsw indicates that the
1041  * associated status condition is solicited, zero if it is unsolicited.