aaede4d8d8
* Fix bug in wdc that would overflow ATAPI transfer length. * Improve wdc probe code so that 'wdc' is probed in if present even if there are no drives attached, and so that it works properly even if the only device is an ATAPI slave. * bus_space-ify. * split the ISA attachment from the wdc driver, and remove ISA dependencies from non-ISA files. * claim that wd and wdc are now machine-independent (probably not completely true, but mostly so; they at least work on arm32 and i386). * Various other minor fixups and cleanups, some of which were pointed out by Kazuki Sakamoto.
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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