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- #-
- # Copyright (c) 2010 Alexander Motin
- # All rights reserved.
- #
- # 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 AUTHOR ``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 AUTHOR 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.
- #
- #include <sys/param.h>
- #include <sys/lock.h>
- #include <sys/malloc.h>
- #include <sys/mutex.h>
- #include <sys/sbuf.h>
- #include <sys/bus.h>
- #include <machine/bus.h>
- #include <sys/systm.h>
- #include <geom/geom.h>
- #include <geom/raid/g_raid.h>
- # The G_RAID transformation class interface.
- INTERFACE g_raid_tr;
- # Default implementations of methods.
- CODE {
- static int
- g_raid_tr_locked_default(struct g_raid_tr_object *tr, void *argp)
- {
- return (0);
- }
- };
- HEADER {
- #define G_RAID_TR_TASTE_FAIL -1
- #define G_RAID_TR_TASTE_SUCCEED 0
- };
- # taste() - volume taste method.
- METHOD int taste {
- struct g_raid_tr_object *tr;
- struct g_raid_volume *volume;
- };
- # event() - events handling method.
- METHOD int event {
- struct g_raid_tr_object *tr;
- struct g_raid_subdisk *sd;
- u_int event;
- };
- # start() - begin operation.
- METHOD int start {
- struct g_raid_tr_object *tr;
- };
- # stop() - stop operation.
- METHOD int stop {
- struct g_raid_tr_object *tr;
- };
- # iorequest() - manage forward transformation and generates requests to disks.
- METHOD void iostart {
- struct g_raid_tr_object *tr;
- struct bio *bp;
- };
- # iodone() - manages backward transformation and reports completion status.
- METHOD void iodone {
- struct g_raid_tr_object *tr;
- struct g_raid_subdisk *sd;
- struct bio *bp;
- };
- # kerneldump() - optimized for rebustness (simplified) kernel dumping routine.
- METHOD int kerneldump {
- struct g_raid_tr_object *tr;
- void *virtual;
- off_t offset;
- size_t length;
- } DEFAULT g_raid_tr_kerneldump_common;
- # locked() - callback method for lock().
- METHOD int locked {
- struct g_raid_tr_object *tr;
- void *argp;
- } DEFAULT g_raid_tr_locked_default;
- # free() - destructor.
- METHOD int free {
- struct g_raid_tr_object *tr;
- };
- # idle() - callback when the volume is idle for a while and the TR wants
- # to schedule some work for that idle period.
- METHOD int idle {
- struct g_raid_tr_object *tr;
- };
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