52 lines
2.3 KiB
C
52 lines
2.3 KiB
C
/*-
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* Copyright (c) 1998 - 2004 Søren Schmidt <sos@FreeBSD.org>
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* All rights reserved.
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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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* without modification, immediately at the beginning of the file.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/* structure describing an ATA disk */
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struct ad_softc {
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struct ata_device *device; /* ptr to device softc */
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int lun; /* logical unit number */
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u_int64_t total_secs; /* total # of sectors (LBA) */
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u_int8_t heads;
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u_int8_t sectors;
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u_int32_t transfersize; /* size of each transfer */
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int num_tags; /* number of tags supported */
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int max_iosize; /* max transfer HW supports */
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int flags; /* drive flags */
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#define AD_F_LABELLING 0x0001
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#define AD_F_CHS_USED 0x0002
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#define AD_F_32B_ENABLED 0x0004
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#define AD_F_TAG_ENABLED 0x0008
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#define AD_F_RAID_SUBDISK 0x0010
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struct mtx queue_mtx; /* bio queue lock */
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struct bio_queue_head queue; /* head of request queue */
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struct disk *disk; /* disklabel/slice stuff */
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};
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