0b7ed341e1
Previously the "struct disk" were owned by the device driver and this gave us problems when the device disappared and the users of that device were not immediately disappearing. Now the struct disk is allocate with a new call, disk_alloc() and owned by geom_disk and just abandonned by the device driver when disk_create() is called. Unfortunately, this results in a ton of "s/\./->/" changes to device drivers. Since I'm doing the sweep anyway, a couple of other API improvements have been carried out at the same time: The Giant awareness flag has been flipped from DISKFLAG_NOGIANT to DISKFLAG_NEEDSGIANT A version number have been added to disk_create() so that we can detect, report and ignore binary drivers with old ABI in the future. Manual page update to follow shortly.
80 lines
3.0 KiB
C
80 lines
3.0 KiB
C
/*-
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* Copyright (c) 1998 - 2003 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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/* ATAPI Rewriteable drive Capabilities and Mechanical Status Page */
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struct afd_cappage {
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u_int16_t data_length;
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u_int8_t medium_type;
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#define MFD_2DD_UN 0x10
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#define MFD_2DD 0x11
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#define MFD_HD_UN 0x20
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#define MFD_HD_12_98 0x22
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#define MFD_HD_12 0x23
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#define MFD_HD_144 0x24
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#define MFD_UHD 0x31
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#define MFD_UNKNOWN 0x00
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#define MFD_NO_DISC 0x70
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#define MFD_DOOR_OPEN 0x71
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#define MFD_FMT_ERROR 0x72
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u_int8_t reserved0 :7;
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u_int8_t wp :1; /* write protect */
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u_int8_t unused[4];
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/* capabilities page */
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u_int8_t page_code :6;
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#define ATAPI_REWRITEABLE_CAP_PAGE 0x05
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u_int8_t reserved1_6 :1;
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u_int8_t ps :1; /* page save supported */
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u_int8_t page_length; /* page length */
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u_int16_t transfer_rate; /* in kilobits per second */
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u_int8_t heads; /* number of heads */
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u_int8_t sectors; /* number of sectors pr track */
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u_int16_t sector_size; /* number of bytes per sector */
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u_int16_t cylinders; /* number of cylinders */
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u_int8_t reserved10[10];
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u_int8_t motor_delay; /* motor off delay */
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u_int8_t reserved21[7];
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u_int16_t rpm; /* rotations per minute */
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u_int8_t reserved30[2];
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};
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struct afd_softc {
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struct ata_device *device; /* device softc */
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int lun; /* logical device unit */
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struct mtx queue_mtx; /* queue lock */
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struct bio_queue_head queue; /* queue of i/o requests */
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struct afd_cappage cap; /* capabilities page info */
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struct disk *disk; /* virtual drives */
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};
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