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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ZIO_IMPL_H
#define _ZIO_IMPL_H
#include <sys/zfs_context.h>
#include <sys/zio.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* I/O Groups: pipeline stage definitions.
*/
typedef enum zio_stage {
ZIO_STAGE_OPEN = 0, /* RWFCI */
ZIO_STAGE_ISSUE_ASYNC, /* -W--- */
ZIO_STAGE_READ_BP_INIT, /* R---- */
ZIO_STAGE_WRITE_BP_INIT, /* -W--- */
ZIO_STAGE_CHECKSUM_GENERATE, /* -W--- */
ZIO_STAGE_GANG_ASSEMBLE, /* RWFC- */
ZIO_STAGE_GANG_ISSUE, /* RWFC- */
ZIO_STAGE_DVA_ALLOCATE, /* -W--- */
ZIO_STAGE_DVA_FREE, /* --F-- */
ZIO_STAGE_DVA_CLAIM, /* ---C- */
ZIO_STAGE_READY, /* RWFCI */
ZIO_STAGE_VDEV_IO_START, /* RW--I */
ZIO_STAGE_VDEV_IO_DONE, /* RW--I */
ZIO_STAGE_VDEV_IO_ASSESS, /* RW--I */
ZIO_STAGE_CHECKSUM_VERIFY, /* R---- */
ZIO_STAGE_DONE, /* RWFCI */
ZIO_STAGES
} zio_stage_t;
#define ZIO_INTERLOCK_STAGES \
((1U << ZIO_STAGE_READY) | \
(1U << ZIO_STAGE_DONE))
#define ZIO_INTERLOCK_PIPELINE \
ZIO_INTERLOCK_STAGES
#define ZIO_VDEV_IO_STAGES \
((1U << ZIO_STAGE_VDEV_IO_START) | \
(1U << ZIO_STAGE_VDEV_IO_DONE) | \
(1U << ZIO_STAGE_VDEV_IO_ASSESS))
#define ZIO_VDEV_CHILD_PIPELINE \
(ZIO_VDEV_IO_STAGES | \
(1U << ZIO_STAGE_DONE))
#define ZIO_READ_COMMON_STAGES \
(ZIO_INTERLOCK_STAGES | \
ZIO_VDEV_IO_STAGES | \
(1U << ZIO_STAGE_CHECKSUM_VERIFY))
#define ZIO_READ_PHYS_PIPELINE \
ZIO_READ_COMMON_STAGES
#define ZIO_READ_PIPELINE \
(ZIO_READ_COMMON_STAGES | \
(1U << ZIO_STAGE_READ_BP_INIT))
#define ZIO_WRITE_COMMON_STAGES \
(ZIO_INTERLOCK_STAGES | \
ZIO_VDEV_IO_STAGES | \
(1U << ZIO_STAGE_ISSUE_ASYNC) | \
(1U << ZIO_STAGE_CHECKSUM_GENERATE))
#define ZIO_WRITE_PHYS_PIPELINE \
ZIO_WRITE_COMMON_STAGES
#define ZIO_REWRITE_PIPELINE \
(ZIO_WRITE_COMMON_STAGES | \
(1U << ZIO_STAGE_WRITE_BP_INIT))
#define ZIO_WRITE_PIPELINE \
(ZIO_WRITE_COMMON_STAGES | \
(1U << ZIO_STAGE_WRITE_BP_INIT) | \
(1U << ZIO_STAGE_DVA_ALLOCATE))
#define ZIO_GANG_STAGES \
((1U << ZIO_STAGE_GANG_ASSEMBLE) | \
(1U << ZIO_STAGE_GANG_ISSUE))
#define ZIO_FREE_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
(1U << ZIO_STAGE_DVA_FREE))
#define ZIO_CLAIM_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
(1U << ZIO_STAGE_DVA_CLAIM))
#define ZIO_IOCTL_PIPELINE \
(ZIO_INTERLOCK_STAGES | \
(1U << ZIO_STAGE_VDEV_IO_START) | \
(1U << ZIO_STAGE_VDEV_IO_ASSESS))
#define ZIO_CONFIG_LOCK_BLOCKING_STAGES \
((1U << ZIO_STAGE_VDEV_IO_START) | \
(1U << ZIO_STAGE_DVA_ALLOCATE) | \
(1U << ZIO_STAGE_DVA_CLAIM))
extern void zio_inject_init(void);
extern void zio_inject_fini(void);
#ifdef __cplusplus
}
#endif
#endif /* _ZIO_IMPL_H */
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