105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
/* $NetBSD: scsipi_base.h,v 1.24 2017/02/26 10:58:47 maya Exp $ */
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/*-
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* Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DEV_SCSIPI_SCSIPI_BASE_H_
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#define _DEV_SCSIPI_SCSIPI_BASE_H_
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struct scsipi_xfer *scsipi_get_xs(struct scsipi_periph *, int);
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void scsipi_put_xs(struct scsipi_xfer *);
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static __inline struct scsipi_xfer *scsipi_make_xs_internal(struct scsipi_periph *,
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struct scsipi_generic *, int cmdlen, u_char *data_addr,
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int datalen, int retries, int timeout, struct buf *,
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int flags) __unused;
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static __inline struct scsipi_xfer *scsipi_make_xs_unlocked(struct scsipi_periph *,
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struct scsipi_generic *, int cmdlen, u_char *data_addr,
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int datalen, int retries, int timeout, struct buf *,
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int flags) __unused;
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static __inline struct scsipi_xfer *scsipi_make_xs_locked(struct scsipi_periph *,
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struct scsipi_generic *, int cmdlen, u_char *data_addr,
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int datalen, int retries, int timeout, struct buf *,
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int flags) __unused;
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/*
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* Make a scsipi_xfer, and return a pointer to it.
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*/
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static __inline struct scsipi_xfer *
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scsipi_make_xs_internal(struct scsipi_periph *periph, struct scsipi_generic *cmd,
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int cmdlen, u_char *data_addr, int datalen, int retries, int timeout,
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struct buf *bp, int flags)
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{
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struct scsipi_xfer *xs;
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if ((xs = scsipi_get_xs(periph, flags)) == NULL)
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return (NULL);
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/*
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* Fill out the scsipi_xfer structure. We don't know whose context
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* the cmd is in, so copy it.
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*/
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memcpy(&xs->cmdstore, cmd, cmdlen);
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xs->cmd = &xs->cmdstore;
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xs->cmdlen = cmdlen;
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xs->data = data_addr;
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xs->datalen = datalen;
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xs->xs_retries = retries;
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xs->timeout = timeout;
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xs->bp = bp;
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return (xs);
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}
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static __inline struct scsipi_xfer *
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scsipi_make_xs_unlocked(struct scsipi_periph *periph, struct scsipi_generic *cmd,
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int cmdlen, u_char *data_addr, int datalen, int retries, int timeout,
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struct buf *bp, int flags)
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{
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return scsipi_make_xs_internal(periph, cmd, cmdlen, data_addr,
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datalen, retries, timeout, bp, flags & ~XS_CTL_NOSLEEP);
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}
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static __inline struct scsipi_xfer *
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scsipi_make_xs_locked(struct scsipi_periph *periph, struct scsipi_generic *cmd,
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int cmdlen, u_char *data_addr, int datalen, int retries, int timeout,
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struct buf *bp, int flags)
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{
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KDASSERT(mutex_owned(chan_mtx(periph->periph_channel)));
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return scsipi_make_xs_internal(periph, cmd, cmdlen, data_addr,
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datalen, retries, timeout, bp, flags | XS_CTL_NOSLEEP);
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}
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#endif /* _DEV_SCSIPI_SCSIPI_BASE_H_ */
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