1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Orb related data structures.
4 *
5 * Copyright IBM Corp. 2007, 2011
6 *
7 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
8 * Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
9 * Sebastian Ott <sebott@linux.vnet.ibm.com>
10 */
11
12 #ifndef S390_ORB_H
13 #define S390_ORB_H
14
15 /*
16 * Command-mode operation request block
17 */
18 struct cmd_orb {
19 u32 intparm; /* interruption parameter */
20 u32 key:4; /* flags, like key, suspend control, etc. */
21 u32 spnd:1; /* suspend control */
22 u32 res1:1; /* reserved */
23 u32 mod:1; /* modification control */
24 u32 sync:1; /* synchronize control */
25 u32 fmt:1; /* format control */
26 u32 pfch:1; /* prefetch control */
27 u32 isic:1; /* initial-status-interruption control */
28 u32 alcc:1; /* address-limit-checking control */
29 u32 ssic:1; /* suppress-suspended-interr. control */
30 u32 res2:1; /* reserved */
31 u32 c64:1; /* IDAW/QDIO 64 bit control */
32 u32 i2k:1; /* IDAW 2/4kB block size control */
33 u32 lpm:8; /* logical path mask */
34 u32 ils:1; /* incorrect length */
35 u32 zero:6; /* reserved zeros */
36 u32 orbx:1; /* ORB extension control */
37 u32 cpa; /* channel program address */
38 } __packed __aligned(4);
39
40 /*
41 * Transport-mode operation request block
42 */
43 struct tm_orb {
44 u32 intparm;
45 u32 key:4;
46 u32:9;
47 u32 b:1;
48 u32:2;
49 u32 lpm:8;
50 u32:7;
51 u32 x:1;
52 u32 tcw;
53 u32 prio:8;
54 u32:8;
55 u32 rsvpgm:8;
56 u32:8;
57 u32:32;
58 u32:32;
59 u32:32;
60 u32:32;
61 } __packed __aligned(4);
62
63 /*
64 * eadm operation request block
65 */
66 struct eadm_orb {
67 u32 intparm;
68 u32 key:4;
69 u32:4;
70 u32 compat1:1;
71 u32 compat2:1;
72 u32:21;
73 u32 x:1;
74 u32 aob;
75 u32 css_prio:8;
76 u32:8;
77 u32 scm_prio:8;
78 u32:8;
79 u32:29;
80 u32 fmt:3;
81 u32:32;
82 u32:32;
83 u32:32;
84 } __packed __aligned(4);
85
86 union orb {
87 struct cmd_orb cmd;
88 struct tm_orb tm;
89 struct eadm_orb eadm;
90 } __packed __aligned(4);
91
92 #endif /* S390_ORB_H */