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Peter Oberparleiter23d805b2008-07-14 09:58:50 +02001/*
2 * Helper functions for scsw access.
3 *
Sebastian Ottd2fc439b2012-08-28 16:44:51 +02004 * Copyright IBM Corp. 2008, 2012
Peter Oberparleiter23d805b2008-07-14 09:58:50 +02005 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
6 */
7
Heiko Carstens62733e52009-09-11 10:28:15 +02008#ifndef _ASM_S390_SCSW_H_
9#define _ASM_S390_SCSW_H_
10
Peter Oberparleiter23d805b2008-07-14 09:58:50 +020011#include <linux/types.h>
Sebastian Ott382b7362012-08-28 16:43:36 +020012#include <asm/css_chars.h>
Peter Oberparleiter23d805b2008-07-14 09:58:50 +020013#include <asm/cio.h>
Heiko Carstens62733e52009-09-11 10:28:15 +020014
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/**
Sebastian Ottd2fc439b2012-08-28 16:44:51 +0200103 * 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/**
Heiko Carstens62733e52009-09-11 10:28:15 +0200133 * union scsw - subchannel status word
134 * @cmd: command-mode SCSW
135 * @tm: transport-mode SCSW
Sebastian Ottd2fc439b2012-08-28 16:44:51 +0200136 * @eadm: eadm SCSW
Heiko Carstens62733e52009-09-11 10:28:15 +0200137 */
138union scsw {
139 struct cmd_scsw cmd;
140 struct tm_scsw tm;
Sebastian Ottd2fc439b2012-08-28 16:44:51 +0200141 struct eadm_scsw eadm;
142} __packed;
Heiko Carstens62733e52009-09-11 10:28:15 +0200143
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
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200212
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200220static inline int scsw_is_tm(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200221{
222 return css_general_characteristics.fcx && (scsw->tm.x == 1);
223}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200224
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200232static inline u32 scsw_key(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200233{
234 if (scsw_is_tm(scsw))
235 return scsw->tm.key;
236 else
237 return scsw->cmd.key;
238}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200239
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200247static inline u32 scsw_eswf(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200248{
249 if (scsw_is_tm(scsw))
250 return scsw->tm.eswf;
251 else
252 return scsw->cmd.eswf;
253}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200254
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200262static inline u32 scsw_cc(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200263{
264 if (scsw_is_tm(scsw))
265 return scsw->tm.cc;
266 else
267 return scsw->cmd.cc;
268}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200269
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200277static inline u32 scsw_ectl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200278{
279 if (scsw_is_tm(scsw))
280 return scsw->tm.ectl;
281 else
282 return scsw->cmd.ectl;
283}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200284
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200292static inline u32 scsw_pno(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200293{
294 if (scsw_is_tm(scsw))
295 return scsw->tm.pno;
296 else
297 return scsw->cmd.pno;
298}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200299
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200307static inline u32 scsw_fctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200308{
309 if (scsw_is_tm(scsw))
310 return scsw->tm.fctl;
311 else
312 return scsw->cmd.fctl;
313}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200314
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200322static inline u32 scsw_actl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200323{
324 if (scsw_is_tm(scsw))
325 return scsw->tm.actl;
326 else
327 return scsw->cmd.actl;
328}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200329
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200337static inline u32 scsw_stctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200338{
339 if (scsw_is_tm(scsw))
340 return scsw->tm.stctl;
341 else
342 return scsw->cmd.stctl;
343}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200344
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200352static inline u32 scsw_dstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200353{
354 if (scsw_is_tm(scsw))
355 return scsw->tm.dstat;
356 else
357 return scsw->cmd.dstat;
358}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200359
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200367static inline u32 scsw_cstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200368{
369 if (scsw_is_tm(scsw))
370 return scsw->tm.cstat;
371 else
372 return scsw->cmd.cstat;
373}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200374
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200382static inline int scsw_cmd_is_valid_key(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200383{
384 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
385}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200386
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200394static inline int scsw_cmd_is_valid_sctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200395{
396 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
397}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200398
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200406static inline int scsw_cmd_is_valid_eswf(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200407{
408 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
409}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200410
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200418static inline int scsw_cmd_is_valid_cc(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200419{
420 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
421 (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND);
422}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200423
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200431static inline int scsw_cmd_is_valid_fmt(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200432{
433 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
434}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200435
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200443static inline int scsw_cmd_is_valid_pfch(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200444{
445 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
446}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200447
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200455static inline int scsw_cmd_is_valid_isic(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200456{
457 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
458}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200459
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200467static inline int scsw_cmd_is_valid_alcc(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200468{
469 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
470}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200471
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200479static inline int scsw_cmd_is_valid_ssi(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200480{
481 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC);
482}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200483
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200491static inline int scsw_cmd_is_valid_zcc(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200492{
493 return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) &&
494 (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS);
495}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200496
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200504static inline int scsw_cmd_is_valid_ectl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200505{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200510
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200518static inline int scsw_cmd_is_valid_pno(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200519{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200526
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200534static inline int scsw_cmd_is_valid_fctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200535{
536 /* Only valid if pmcw.dnv == 1*/
537 return 1;
538}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200539
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200547static inline int scsw_cmd_is_valid_actl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200548{
549 /* Only valid if pmcw.dnv == 1*/
550 return 1;
551}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200552
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200560static inline int scsw_cmd_is_valid_stctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200561{
562 /* Only valid if pmcw.dnv == 1*/
563 return 1;
564}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200565
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200573static inline int scsw_cmd_is_valid_dstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200574{
575 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
576 (scsw->cmd.cc != 3);
577}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200578
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200586static inline int scsw_cmd_is_valid_cstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200587{
588 return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) &&
589 (scsw->cmd.cc != 3);
590}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200591
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200599static inline int scsw_tm_is_valid_key(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200600{
601 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC);
602}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200603
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200611static inline int scsw_tm_is_valid_eswf(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200612{
613 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
614}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200615
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200623static inline int scsw_tm_is_valid_cc(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200624{
625 return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) &&
626 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND);
627}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200628
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200636static inline int scsw_tm_is_valid_fmt(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200637{
638 return 1;
639}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200640
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200648static inline int scsw_tm_is_valid_x(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200649{
650 return 1;
651}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200652
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200660static inline int scsw_tm_is_valid_q(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200661{
662 return 1;
663}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200664
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200672static inline int scsw_tm_is_valid_ectl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200673{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200678
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200686static inline int scsw_tm_is_valid_pno(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200687{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200694
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200702static inline int scsw_tm_is_valid_fctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200703{
704 /* Only valid if pmcw.dnv == 1*/
705 return 1;
706}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200707
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200715static inline int scsw_tm_is_valid_actl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200716{
717 /* Only valid if pmcw.dnv == 1*/
718 return 1;
719}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200720
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200728static inline int scsw_tm_is_valid_stctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200729{
730 /* Only valid if pmcw.dnv == 1*/
731 return 1;
732}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200733
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200741static inline int scsw_tm_is_valid_dstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200742{
743 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
744 (scsw->tm.cc != 3);
745}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200746
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200754static inline int scsw_tm_is_valid_cstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200755{
756 return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) &&
757 (scsw->tm.cc != 3);
758}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200759
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200767static inline int scsw_tm_is_valid_fcxs(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200768{
769 return 1;
770}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200771
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200779static inline int scsw_tm_is_valid_schxs(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200780{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200786
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200795static inline int scsw_is_valid_actl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200796{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200802
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200811static inline int scsw_is_valid_cc(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200812{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200818
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200827static inline int scsw_is_valid_cstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200828{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200834
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200843static inline int scsw_is_valid_dstat(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200844{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200850
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200859static inline int scsw_is_valid_ectl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200860{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200866
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200875static inline int scsw_is_valid_eswf(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200876{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200882
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200891static inline int scsw_is_valid_fctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200892{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200898
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200907static inline int scsw_is_valid_key(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200908{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200914
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200923static inline int scsw_is_valid_pno(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200924{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200930
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200939static inline int scsw_is_valid_stctl(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200940{
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}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200946
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200954static inline int scsw_cmd_is_solicited(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200955{
956 return (scsw->cmd.cc != 0) || (scsw->cmd.stctl !=
957 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
958}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200959
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200967static inline int scsw_tm_is_solicited(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200968{
969 return (scsw->tm.cc != 0) || (scsw->tm.stctl !=
970 (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS));
971}
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200972
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 */
Heiko Carstens62733e52009-09-11 10:28:15 +0200980static inline int scsw_is_solicited(union scsw *scsw)
Peter Oberparleiter23d805b2008-07-14 09:58:50 +0200981{
982 if (scsw_is_tm(scsw))
983 return scsw_tm_is_solicited(scsw);
984 else
985 return scsw_cmd_is_solicited(scsw);
986}
Heiko Carstens62733e52009-09-11 10:28:15 +0200987
988#endif /* _ASM_S390_SCSW_H_ */