/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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

#include <linux/types.h>
#include <asm/dma-types.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 */
        dma32_t 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;
        dma32_t 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;
        dma32_t 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 */