133 lines
4.9 KiB
C
133 lines
4.9 KiB
C
/* $NetBSD: wdlink.h,v 1.4 1998/01/14 23:42:01 cgd Exp $ */
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/*
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* Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
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*
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* DMA and multi-sector PIO handling are derived from code contributed by
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* Onno van der Linden.
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*
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* Atapi support added by 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 Charles M. Hannum.
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* 4. 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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/*
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* XXX THIS FILE NEEDS TO BE GUTTED, AND TURNED INTO A REAL 'ATA'/'ATAPI'
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* XXX INTERFACE FILE.
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*/
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#undef WDDEBUG
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/* #undef DIAGNOSTIC */
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struct wd_link {
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u_int8_t type;
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#define ATA 0
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#define ATAPI 1
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u_int8_t channel;
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u_int8_t drive;
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caddr_t wdc_softc;
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caddr_t wd_softc;
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struct wdparams sc_params;
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/* Long-term state: */
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u_int8_t openings;
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int sc_state; /* control state */
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#define RECAL 0 /* recalibrate */
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#define RECAL_WAIT 1 /* done recalibrating */
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#define GEOMETRY 2 /* upload geometry */
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#define GEOMETRY_WAIT 3 /* done uploading geometry */
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#define MULTIMODE 4 /* set multiple mode */
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#define MULTIMODE_WAIT 5 /* done setting multiple mode */
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#define READY 6 /* done with open */
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int sc_mode; /* transfer mode */
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#define WDM_PIOSINGLE 0 /* single-sector PIO */
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#define WDM_PIOMULTI 1 /* multi-sector PIO */
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#define WDM_DMA 2 /* DMA */
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int sc_multiple; /* multiple for WDM_PIOMULTI */
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int sc_flags; /* drive characteistics found */
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#define WDF_LOCKED 0x01
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#define WDF_WANTED 0x02
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#define WDF_WLABEL 0x04 /* label is writable */
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#define WDF_LABELLING 0x08 /* writing label */
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/*
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* XXX Nothing resets this yet, but disk change sensing will when ATAPI is
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* implemented.
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*/
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#define WDF_LOADED 0x10 /* parameters loaded */
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#define WDF_WAIT 0x20 /* waiting for resourses */
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daddr_t sc_badsect[127]; /* 126 plus trailing -1 marker */
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struct disklabel *sc_lp; /* label info for this disk */
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};
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struct wdc_xfer {
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struct wd_link *d_link; /* drive/bus structure info */
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volatile long c_flags; /* handle: scsi flags (0x0000ffff)
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b_read/b_write (0x00f00000)
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controllers flags (0x000f0000) */
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#define C_INUSE 0x010000
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#define C_ATAPI 0x020000
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#define C_ERROR 0x040000
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#define C_NEEDDONE 0x080000
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/* Information about the current transfer */
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struct buf *c_bp;
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void *atapi_cmd;
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void *databuf;
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daddr_t c_blkno; /* starting block number */
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int c_bcount; /* byte count left */
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int c_skip; /* bytes already transferred */
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int c_nblks; /* number of blocks currently transferring */
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int c_nbytes; /* number of bytes currently transferring */
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u_long c_p_offset; /* offset of the partition */
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TAILQ_ENTRY(wdc_xfer) c_xferchain;
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LIST_ENTRY(wdc_xfer) free_list;
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};
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void wdc_exec_xfer __P((struct wdc_softc *, struct wd_link *,
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struct wdc_xfer *));
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struct wdc_xfer *wdc_get_xfer __P((int));
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int wdc_get_parms __P((struct wdc_softc *, struct wd_link *));
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void wdstart __P((void*));
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void wderror __P((struct wd_link* , struct buf *, char *));
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void wddone __P((struct wd_link*, struct buf*));
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int wdccommand __P((struct wdc_softc *, struct wd_link *, int, int,
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int, int, int, int));
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int wdccommandshort __P((struct wdc_softc *, int, int));
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int wdcwait __P((struct wdc_softc *, int));
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/*
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* ST506 spec says that if READY or SEEKCMPLT go off, then the read or write
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* command is aborted.
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*/
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#define wait_for_drq(d) wdcwait(d, WDCS_DRDY | WDCS_DSC | WDCS_DRQ)
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#define wait_for_unbusy(d) wdcwait(d, 0)
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#define wait_for_ready(d) wdcwait(d, WDCS_DRDY | WDCS_DSC)
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#define atapi_ready(d) wdcwait(d, WDCS_DRQ)
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#define IDE_NOSLEEP 0x01
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