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 */
93