drivers/s390/cio/orb.h

   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 */