NetBSD/sys/dev/ata/wdlink.h

133 lines
4.9 KiB
C

/* $NetBSD: wdlink.h,v 1.7 1998/04/26 06:03:24 mycroft Exp $ */
/*
* Copyright (c) 1994, 1995, 1998 Charles M. Hannum. All rights reserved.
*
* DMA and multi-sector PIO handling are derived from code contributed by
* Onno van der Linden.
*
* Atapi support added by Manuel Bouyer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* XXX THIS FILE NEEDS TO BE GUTTED, AND TURNED INTO A REAL 'ATA'/'ATAPI'
* XXX INTERFACE FILE.
*/
#undef WDDEBUG
/* #undef DIAGNOSTIC */
struct wd_link {
u_int8_t type;
#define ATA 0
#define ATAPI 1
u_int8_t channel;
u_int8_t drive;
caddr_t wdc_softc;
caddr_t wd_softc;
struct wdparams sc_params;
/* Long-term state: */
u_int8_t openings;
int sc_state; /* control state */
#define RECAL 0 /* recalibrate */
#define RECAL_WAIT 1 /* done recalibrating */
#define GEOMETRY 2 /* upload geometry */
#define GEOMETRY_WAIT 3 /* done uploading geometry */
#define MULTIMODE 4 /* set multiple mode */
#define MULTIMODE_WAIT 5 /* done setting multiple mode */
#define READY 6 /* done with open */
int sc_mode; /* transfer mode */
#define WDM_PIOSINGLE 0 /* single-sector PIO */
#define WDM_PIOMULTI 1 /* multi-sector PIO */
#define WDM_DMA 2 /* DMA */
int sc_multiple; /* multiple for WDM_PIOMULTI */
int sc_flags; /* drive characteistics found */
#define WDF_LOCKED 0x01
#define WDF_WANTED 0x02
#define WDF_WLABEL 0x04 /* label is writable */
#define WDF_LABELLING 0x08 /* writing label */
/*
* XXX Nothing resets this yet, but disk change sensing will when ATA-4 is
* more fully implemented.
*/
#define WDF_LOADED 0x10 /* parameters loaded */
#define WDF_WAIT 0x20 /* waiting for resources */
#define WDF_LBA 0x40 /* using LBA mode */
int sc_capacity;
daddr_t sc_badsect[127]; /* 126 plus trailing -1 marker */
struct disklabel *sc_lp; /* label info for this disk */
};
struct wdc_xfer {
struct wd_link *d_link; /* drive/bus structure info */
volatile long c_flags; /* handle: scsi flags (0x0000ffff)
b_read/b_write (0x00f00000)
controllers flags (0x000f0000) */
#define C_INUSE 0x010000
#define C_ATAPI 0x020000
#define C_ERROR 0x040000
#define C_NEEDDONE 0x080000
/* Information about the current transfer */
struct buf *c_bp;
void *atapi_cmd;
void *databuf;
daddr_t c_blkno; /* starting block number */
int c_bcount; /* byte count left */
int c_skip; /* bytes already transferred */
int c_nblks; /* number of blocks currently transferring */
int c_nbytes; /* number of bytes currently transferring */
TAILQ_ENTRY(wdc_xfer) c_xferchain;
LIST_ENTRY(wdc_xfer) free_list;
};
void wdc_exec_xfer __P((struct wdc_softc *, struct wd_link *,
struct wdc_xfer *));
struct wdc_xfer *wdc_get_xfer __P((int));
int wdc_get_parms __P((struct wdc_softc *, struct wd_link *));
void wdstart __P((void*));
void wderror __P((struct wd_link* , struct buf *, char *));
void wddone __P((struct wd_link*, struct buf*));
int wdccommand __P((struct wdc_softc *, struct wd_link *, int, int,
int, int, int, int));
int wdccommandshort __P((struct wdc_softc *, int, int));
int wdcwait __P((struct wdc_softc *, int));
/*
* ST506 spec says that if READY or SEEKCMPLT go off, then the read or write
* command is aborted.
*/
#define wait_for_drq(d) wdcwait(d, WDCS_DRDY | WDCS_DSC | WDCS_DRQ)
#define wait_for_unbusy(d) wdcwait(d, 0)
#define wait_for_ready(d) wdcwait(d, WDCS_DRDY | WDCS_DSC)
#define atapi_ready(d) wdcwait(d, WDCS_DRQ)
#define IDE_NOSLEEP 0x01