/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Roland C. Dowdeswell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _DEV_DKVAR_H_
#define _DEV_DKVAR_H_
#include <sys/rndsource.h>
struct pathbuf; /* from namei.h */
/* literally this is not a softc, but is intended to be included in
* the pseudo-disk's softc and passed to calls in dksubr.c. It
* should include the common elements of the pseudo-disk's softc.
* All elements that are included here should describe the external
* representation of the disk to the higher layers, and flags that
* are common to each of the pseudo-disk drivers.
*/
struct dk_softc {
device_t sc_dev;
u_int32_t sc_flags; /* flags */
#define DK_XNAME_SIZE 8
char sc_xname[DK_XNAME_SIZE]; /* external name */
struct disk sc_dkdev; /* generic disk info */
kmutex_t sc_iolock; /* protects buffer queue */
struct bufq_state *sc_bufq; /* buffer queue */
int sc_dtype; /* disk type */
struct buf *sc_deferred; /* retry after start failed */
int sc_busy; /* processing buffers */
krndsource_t sc_rnd_source; /* entropy source */
};
/* sc_flags:
* We separate the flags into two varieties, those that dksubr.c
* understands and manipulates and those that it does not.
*/
#define DKF_INITED 0x00010000 /* unit has been initialised */
#define DKF_WLABEL 0x00020000 /* label area is writable */
#define DKF_LABELLING 0x00040000 /* unit is currently being labeled */
#define DKF_WARNLABEL 0x00080000 /* warn if disklabel not present */
#define DKF_LABELSANITY 0x00100000 /* warn if disklabel not sane */
#define DKF_TAKEDUMP 0x00200000 /* allow dumping */
#define DKF_KLABEL 0x00400000 /* keep label on close */
#define DKF_VLABEL 0x00800000 /* label is valid */
#define DKF_SLEEP 0x80000000 /* dk_start/dk_done may sleep */
#define DKF_NO_RND 0x01000000 /* do not attach as rnd source */
/* Mask of flags that dksubr.c understands, other flags are fair game */
#define DK_FLAGMASK 0xffff0000
