3381232270
Such RAID controllers are actually just IDE controllers with a BIOS that can create RAID volumes and write the configuration info to config blocks on the disks. The BIOS can do I/O to these volumes, and the OS must understand the config blocks and implement RAID in software in order to be able to use these volumes. Only SPAN (simple concatenation) and RAID0 are supported at this time, and writing back config blocks is also not supported at this time. Currently, only the Promise configuration scheme is supported, although supporting the Highpoint scheme should not be too difficult. In any case, this is sufficient to use the Promise RAID0 volume (thus preserving the win2k AS installation) on this new Intel server I have. Thanks to Soren Schmidt for doing the work in FreeBSD; it made this task much easier. The config block parsing code is adapted from his work.
151 lines
5.7 KiB
C
151 lines
5.7 KiB
C
/* $NetBSD: wdvar.h,v 1.13 2003/01/27 18:21:30 thorpej Exp $ */
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/*
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* Copyright (c) 1998, 2001 Manuel Bouyer.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Manuel Bouyer.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* 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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*/
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/* Params needed by the controller to perform an ATA bio */
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struct ata_bio {
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volatile u_int16_t flags;/* cmd flags */
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#define ATA_NOSLEEP 0x0001 /* Can't sleep */
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#define ATA_POLL 0x0002 /* poll for completion */
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#define ATA_ITSDONE 0x0004 /* the transfer is as done as it gets */
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#define ATA_SINGLE 0x0008 /* transfer must be done in singlesector mode */
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#define ATA_LBA 0x0010 /* transfer uses LBA adressing */
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#define ATA_READ 0x0020 /* transfer is a read (otherwise a write) */
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#define ATA_CORR 0x0040 /* transfer had a corrected error */
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#define ATA_LBA48 0x0080 /* transfer uses 48-bit LBA adressing */
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int multi; /* # of blocks to transfer in multi-mode */
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struct disklabel *lp; /* pointer to drive's label info */
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daddr_t blkno; /* block addr */
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daddr_t blkdone;/* number of blks transferred */
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daddr_t nblks; /* number of block currently transferring */
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int nbytes; /* number of bytes currently transferring */
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long bcount; /* total number of bytes */
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char *databuf;/* data buffer adress */
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volatile int error;
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#define NOERROR 0 /* There was no error (r_error invalid) */
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#define ERROR 1 /* check r_error */
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#define ERR_DF 2 /* Drive fault */
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#define ERR_DMA 3 /* DMA error */
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#define TIMEOUT 4 /* device timed out */
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#define ERR_NODEV 5 /* device has been gone */
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u_int8_t r_error;/* copy of error register */
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daddr_t badsect[127];/* 126 plus trailing -1 marker */
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};
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/*
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* ata_bustype. The first field has to be compatible with scsipi_bustype,
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* as it's used for autoconfig by both ata and atapi drivers
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*/
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struct ata_bustype {
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int bustype_type; /* symbolic name of type */
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int (*ata_bio) __P((struct ata_drive_datas*, struct ata_bio *));
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void (*ata_reset_channel) __P((struct ata_drive_datas *));
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int (*ata_exec_command) __P((struct ata_drive_datas *,
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struct wdc_command *));
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#define WDC_COMPLETE 0x01
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#define WDC_QUEUED 0x02
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#define WDC_TRY_AGAIN 0x03
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int (*ata_get_params) __P((struct ata_drive_datas*, u_int8_t,
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struct ataparams *));
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int (*ata_addref) __P((struct ata_drive_datas *));
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void (*ata_delref) __P((struct ata_drive_datas *));
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void (*ata_killpending) __P((struct ata_drive_datas *));
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};
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/* bustype_type */
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/* #define SCSIPI_BUSTYPE_SCSI 0 */
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/* #define SCSIPI_BUSTYPE_ATAPI 1 */
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#define SCSIPI_BUSTYPE_ATA 2
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/*
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* describe an ATA device. Has to be compatible with scsipi_channel, so start
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* with a pointer to ata_bustype
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*/
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struct ata_device {
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const struct ata_bustype *adev_bustype;
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int adev_channel;
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int adev_openings;
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struct ata_drive_datas *adev_drv_data;
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};
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#ifdef __ATA_DISK_PRIVATE
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struct wd_softc {
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/* General disk infos */
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struct device sc_dev;
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struct disk sc_dk;
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struct bufq_state sc_q;
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struct callout sc_restart_ch;
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/* IDE disk soft states */
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struct ata_bio sc_wdc_bio; /* current transfer */
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struct buf *sc_bp; /* buf being transfered */
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void *wdc_softc; /* pointer to our parent */
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struct ata_drive_datas *drvp; /* Our controller's infos */
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const struct ata_bustype *atabus;
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int openings;
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struct ataparams sc_params;/* drive characteistics found */
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int sc_flags;
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#define WDF_LOCKED 0x001
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#define WDF_WANTED 0x002
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#define WDF_WLABEL 0x004 /* label is writable */
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#define WDF_LABELLING 0x008 /* writing label */
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/*
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* XXX Nothing resets this yet, but disk change sensing will when ATA-4 is
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* more fully implemented.
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*/
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#define WDF_LOADED 0x010 /* parameters loaded */
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#define WDF_WAIT 0x020 /* waiting for resources */
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#define WDF_LBA 0x040 /* using LBA mode */
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#define WDF_KLABEL 0x080 /* retain label after 'full' close */
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#define WDF_LBA48 0x100 /* using 48-bit LBA mode */
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int sc_capacity;
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int cyl; /* actual drive parameters */
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int heads;
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int sectors;
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int retries; /* number of xfer retry */
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void *sc_sdhook; /* our shutdown hook */
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#if NRND > 0
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rndsource_element_t rnd_source;
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#endif
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};
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#define sc_drive sc_wdc_bio.drive
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#define sc_mode sc_wdc_bio.mode
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#define sc_multi sc_wdc_bio.multi
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#define sc_badsect sc_wdc_bio.badsect
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#endif /* __ATA_DISK_PRIVATE */
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void wddone __P((void *));
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