orb.h

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/*
 * Orb related data structures.
 *
 * Copyright IBM Corp. 2007, 2011
 *
 * Author(s): Cornelia Huck <[email protected]>
 *        Peter Oberparleiter <[email protected]>
 *        Sebastian Ott <[email protected]>
 */

#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 */