drivers/s390/cio/orb.h

   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 #include <linux/types.h>
  16 #include <asm/dma-types.h>
  17
  18 /*
  19  * Command-mode operation request block
  20  */
  21 struct cmd_orb {
  22         u32 intparm;    /* interruption parameter */
  23         u32 key:4;      /* flags, like key, suspend control, etc. */
  24         u32 spnd:1;     /* suspend control */
  25         u32 res1:1;     /* reserved */
  26         u32 mod:1;      /* modification control */
  27         u32 sync:1;     /* synchronize control */
  28         u32 fmt:1;      /* format control */
  29         u32 pfch:1;     /* prefetch control */
  30         u32 isic:1;     /* initial-status-interruption control */
  31         u32 alcc:1;     /* address-limit-checking control */
  32         u32 ssic:1;     /* suppress-suspended-interr. control */
  33         u32 res2:1;     /* reserved */
  34         u32 c64:1;      /* IDAW/QDIO 64 bit control  */
  35         u32 i2k:1;      /* IDAW 2/4kB block size control */
  36         u32 lpm:8;      /* logical path mask */
  37         u32 ils:1;      /* incorrect length */
  38         u32 zero:6;     /* reserved zeros */
  39         u32 orbx:1;     /* ORB extension control */
  40         dma32_t cpa;    /* channel program address */
  41 }  __packed __aligned(4);
  42
  43 /*
  44  * Transport-mode operation request block
  45  */
  46 struct tm_orb {
  47         u32 intparm;
  48         u32 key:4;
  49         u32:9;
  50         u32 b:1;
  51         u32:2;
  52         u32 lpm:8;
  53         u32:7;
  54         u32 x:1;
  55         dma32_t tcw;
  56         u32 prio:8;
  57         u32:8;
  58         u32 rsvpgm:8;
  59         u32:8;
  60         u32:32;
  61         u32:32;
  62         u32:32;
  63         u32:32;
  64 }  __packed __aligned(4);
  65
  66 /*
  67  * eadm operation request block
  68  */
  69 struct eadm_orb {
  70         u32 intparm;
  71         u32 key:4;
  72         u32:4;
  73         u32 compat1:1;
  74         u32 compat2:1;
  75         u32:21;
  76         u32 x:1;
  77         dma32_t aob;
  78         u32 css_prio:8;
  79         u32:8;
  80         u32 scm_prio:8;
  81         u32:8;
  82         u32:29;
  83         u32 fmt:3;
  84         u32:32;
  85         u32:32;
  86         u32:32;
  87 }  __packed __aligned(4);
  88
  89 union orb {
  90         struct cmd_orb cmd;
  91         struct tm_orb tm;
  92         struct eadm_orb eadm;
  93 }  __packed __aligned(4);
  94
  95 #endif /* S390_ORB_H */