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