orb.h
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/*
* Orb related data structures.
*
* Copyright IBM Corp. 2007, 2011
*
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
* Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
* Sebastian Ott <sebott@linux.vnet.ibm.com>
*/
#ifndef S390_ORB_H
#define S390_ORB_H
/*
* Command-mode operation request block
*/
struct cmd_orb {
u32 intparm; /* interruption parameter */
u32 key:4; /* flags, like key, suspend control, etc. */
u32 spnd:1; /* suspend control */
u32 res1:1; /* reserved */
u32 mod:1; /* modification control */
u32 sync:1; /* synchronize control */
u32 fmt:1; /* format control */
u32 pfch:1; /* prefetch control */
u32 isic:1; /* initial-status-interruption control */
u32 alcc:1; /* address-limit-checking control */
u32 ssic:1; /* suppress-suspended-interr. control */
u32 res2:1; /* reserved */
u32 c64:1; /* IDAW/QDIO 64 bit control */
u32 i2k:1; /* IDAW 2/4kB block size control */
u32 lpm:8; /* logical path mask */
u32 ils:1; /* incorrect length */
u32 zero:6; /* reserved zeros */
u32 orbx:1; /* ORB extension control */
u32 cpa; /* channel program address */
} __packed __aligned(4);
/*
* Transport-mode operation request block
*/
struct tm_orb {
u32 intparm;
u32 key:4;
u32:9;
u32 b:1;
u32:2;
u32 lpm:8;
u32:7;
u32 x:1;
u32 tcw;
u32 prio:8;
u32:8;
u32 rsvpgm:8;
u32:8;
u32:32;
u32:32;
u32:32;
u32:32;
} __packed __aligned(4);
/*
* eadm operation request block
*/
struct eadm_orb {
u32 intparm;
u32 key:4;
u32:4;
u32 compat1:1;
u32 compat2:1;
u32:21;
u32 x:1;
u32 aob;
u32 css_prio:8;
u32:8;
u32 scm_prio:8;
u32:8;
u32:29;
u32 fmt:3;
u32:32;
u32:32;
u32:32;
} __packed __aligned(4);
union orb {
struct cmd_orb cmd;
struct tm_orb tm;
struct eadm_orb eadm;
} __packed __aligned(4);
#endif /* S390_ORB_H */