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authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>2008-07-14 03:58:50 -0400
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-07-14 04:02:07 -0400
commit23d805b647db6c2063a13089497615efa9deacdd (patch)
tree87fea2384f95192b68535c7ddb1495776677ce85 /include/asm-s390
parent4f2bd92e3b4f3b6405c5aadae3ad64acd94cdb78 (diff)
[S390] cio: introduce fcx enabled scsw format
Extend the scsw data structure to the format required by fcx. Also provide helper functions for easier access to fields which are present in both the traditional as well as the modified format. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'include/asm-s390')
-rw-r--r--include/asm-s390/cio.h114
1 files changed, 111 insertions, 3 deletions
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h
index 0818ecd30ca6..6dccb071aec3 100644
--- a/include/asm-s390/cio.h
+++ b/include/asm-s390/cio.h
@@ -16,7 +16,7 @@
16#define __MAX_CSSID 0 16#define __MAX_CSSID 0
17 17
18/** 18/**
19 * struct scsw - subchannel status word 19 * struct cmd_scsw - command-mode subchannel status word
20 * @key: subchannel key 20 * @key: subchannel key
21 * @sctl: suspend control 21 * @sctl: suspend control
22 * @eswf: esw format 22 * @eswf: esw format
@@ -38,7 +38,7 @@
38 * @cstat: subchannel status 38 * @cstat: subchannel status
39 * @count: residual count 39 * @count: residual count
40 */ 40 */
41struct scsw { 41struct cmd_scsw {
42 __u32 key : 4; 42 __u32 key : 4;
43 __u32 sctl : 1; 43 __u32 sctl : 1;
44 __u32 eswf : 1; 44 __u32 eswf : 1;
@@ -61,6 +61,114 @@ struct scsw {
61 __u32 count : 16; 61 __u32 count : 16;
62} __attribute__ ((packed)); 62} __attribute__ ((packed));
63 63
64/**
65 * struct tm_scsw - transport-mode subchannel status word
66 * @key: subchannel key
67 * @eswf: esw format
68 * @cc: deferred condition code
69 * @fmt: format
70 * @x: IRB-format control
71 * @q: interrogate-complete
72 * @ectl: extended control
73 * @pno: path not operational
74 * @fctl: function control
75 * @actl: activity control
76 * @stctl: status control
77 * @tcw: TCW address
78 * @dstat: device status
79 * @cstat: subchannel status
80 * @fcxs: FCX status
81 * @schxs: subchannel-extended status
82 */
83struct tm_scsw {
84 u32 key:4;
85 u32 :1;
86 u32 eswf:1;
87 u32 cc:2;
88 u32 fmt:3;
89 u32 x:1;
90 u32 q:1;
91 u32 :1;
92 u32 ectl:1;
93 u32 pno:1;
94 u32 :1;
95 u32 fctl:3;
96 u32 actl:7;
97 u32 stctl:5;
98 u32 tcw;
99 u32 dstat:8;
100 u32 cstat:8;
101 u32 fcxs:8;
102 u32 schxs:8;
103} __attribute__ ((packed));
104
105/**
106 * union scsw - subchannel status word
107 * @cmd: command-mode SCSW
108 * @tm: transport-mode SCSW
109 */
110union scsw {
111 struct cmd_scsw cmd;
112 struct tm_scsw tm;
113} __attribute__ ((packed));
114
115int scsw_is_tm(union scsw *scsw);
116u32 scsw_key(union scsw *scsw);
117u32 scsw_eswf(union scsw *scsw);
118u32 scsw_cc(union scsw *scsw);
119u32 scsw_ectl(union scsw *scsw);
120u32 scsw_pno(union scsw *scsw);
121u32 scsw_fctl(union scsw *scsw);
122u32 scsw_actl(union scsw *scsw);
123u32 scsw_stctl(union scsw *scsw);
124u32 scsw_dstat(union scsw *scsw);
125u32 scsw_cstat(union scsw *scsw);
126int scsw_is_solicited(union scsw *scsw);
127int scsw_is_valid_key(union scsw *scsw);
128int scsw_is_valid_eswf(union scsw *scsw);
129int scsw_is_valid_cc(union scsw *scsw);
130int scsw_is_valid_ectl(union scsw *scsw);
131int scsw_is_valid_pno(union scsw *scsw);
132int scsw_is_valid_fctl(union scsw *scsw);
133int scsw_is_valid_actl(union scsw *scsw);
134int scsw_is_valid_stctl(union scsw *scsw);
135int scsw_is_valid_dstat(union scsw *scsw);
136int scsw_is_valid_cstat(union scsw *scsw);
137int scsw_cmd_is_valid_key(union scsw *scsw);
138int scsw_cmd_is_valid_sctl(union scsw *scsw);
139int scsw_cmd_is_valid_eswf(union scsw *scsw);
140int scsw_cmd_is_valid_cc(union scsw *scsw);
141int scsw_cmd_is_valid_fmt(union scsw *scsw);
142int scsw_cmd_is_valid_pfch(union scsw *scsw);
143int scsw_cmd_is_valid_isic(union scsw *scsw);
144int scsw_cmd_is_valid_alcc(union scsw *scsw);
145int scsw_cmd_is_valid_ssi(union scsw *scsw);
146int scsw_cmd_is_valid_zcc(union scsw *scsw);
147int scsw_cmd_is_valid_ectl(union scsw *scsw);
148int scsw_cmd_is_valid_pno(union scsw *scsw);
149int scsw_cmd_is_valid_fctl(union scsw *scsw);
150int scsw_cmd_is_valid_actl(union scsw *scsw);
151int scsw_cmd_is_valid_stctl(union scsw *scsw);
152int scsw_cmd_is_valid_dstat(union scsw *scsw);
153int scsw_cmd_is_valid_cstat(union scsw *scsw);
154int scsw_cmd_is_solicited(union scsw *scsw);
155int scsw_tm_is_valid_key(union scsw *scsw);
156int scsw_tm_is_valid_eswf(union scsw *scsw);
157int scsw_tm_is_valid_cc(union scsw *scsw);
158int scsw_tm_is_valid_fmt(union scsw *scsw);
159int scsw_tm_is_valid_x(union scsw *scsw);
160int scsw_tm_is_valid_q(union scsw *scsw);
161int scsw_tm_is_valid_ectl(union scsw *scsw);
162int scsw_tm_is_valid_pno(union scsw *scsw);
163int scsw_tm_is_valid_fctl(union scsw *scsw);
164int scsw_tm_is_valid_actl(union scsw *scsw);
165int scsw_tm_is_valid_stctl(union scsw *scsw);
166int scsw_tm_is_valid_dstat(union scsw *scsw);
167int scsw_tm_is_valid_cstat(union scsw *scsw);
168int scsw_tm_is_valid_fcxs(union scsw *scsw);
169int scsw_tm_is_valid_schxs(union scsw *scsw);
170int scsw_tm_is_solicited(union scsw *scsw);
171
64#define SCSW_FCTL_CLEAR_FUNC 0x1 172#define SCSW_FCTL_CLEAR_FUNC 0x1
65#define SCSW_FCTL_HALT_FUNC 0x2 173#define SCSW_FCTL_HALT_FUNC 0x2
66#define SCSW_FCTL_START_FUNC 0x4 174#define SCSW_FCTL_START_FUNC 0x4
@@ -303,7 +411,7 @@ struct esw3 {
303 * if applicable). 411 * if applicable).
304 */ 412 */
305struct irb { 413struct irb {
306 struct scsw scsw; 414 union scsw scsw;
307 union { 415 union {
308 struct esw0 esw0; 416 struct esw0 esw0;
309 struct esw1 esw1; 417 struct esw1 esw1;