sys/dktp/cmdk.h

	cmdk.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_DKTP_CMDK_H
#define _SYS_DKTP_CMDK_H

#pragma ident   "%Z%%M% %I% %E% SMI"

#ifdef  __cplusplus
extern "C" {
#endif

#define CMDK_UNITSHF    6
#define CMDK_MAXPART    (1 << CMDK_UNITSHF)

struct  dk_openinfo {
    uint64_t    dk_reg[OTYPCNT];    /* bit per partition: 2^6 */
    ulong_t     dk_lyr[CMDK_MAXPART];   /* OTYP_LYR cnt per partition */
    uint64_t    dk_exl;         /* bit per partition: 2^6 */
};

struct  cmdk_label {
    opaque_t    dkl_objp;
    char        dkl_name[OBJNAMELEN];
};

#define CMDK_LABEL_MAX  3
struct  cmdk {
    long        dk_flag;
    dev_info_t  *dk_dip;
    dev_t       dk_dev;

    ksema_t     dk_semoclose;   /* lock for opens/closes    */
    struct      dk_openinfo dk_open;

    opaque_t    dk_tgobjp;  /* target disk object pointer   */
    opaque_t    dk_lbobjp;
    struct cmdk_label dk_lb[CMDK_LABEL_MAX];

    kmutex_t    dk_pinfo_lock;
    kcondvar_t  dk_pinfo_cv;
    int     dk_pinfo_state;
};

/*  common disk flags definitions                   */
#define CMDK_OPEN       0x1
#define CMDK_VALID_LABEL    0x2
#define CMDK_TGDK_OPEN      0x4

#define CMDKUNIT(dev) (getminor((dev)) >> CMDK_UNITSHF)
#define CMDKPART(dev) (getminor((dev)) & (CMDK_MAXPART - 1))

#define CMDK_TGOBJP(dkp)    (dkp)->dk_tgobjp

/*  dk_pinfo_states for cmdk_part_info() */
#define CMDK_PARTINFO_INVALID   0
#define CMDK_PARTINFO_BUSY  1
#define CMDK_PARTINFO_BUSY2 2
#define CMDK_PARTINFO_VALID 3


#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_DKTP_CMDK_H */