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/* $OpenBSD: wdlink.h,v 1.6 1996/11/29 22:55:10 niklas Exp $ */
/*
* Copyright (c) 1994, 1995 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.
*/
/* #undef WDDEBUG */
/* #undef DIAGNOSTIC */
struct wdc_link {
int flags;
int openings;
};
struct wdc_softc {
struct device sc_dev;
void *sc_ih;
struct wd_link *d_link[2];
struct bus_link *ab_link;
struct wdc_link ctlr_link;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
int sc_drq; /* DMA channel */
TAILQ_HEAD(xferhead, wdc_xfer) sc_xfer;
int sc_flags;
#define WDCF_ACTIVE 0x01 /* controller is active */
#define WDCF_SINGLE 0x02 /* sector at a time mode */
#define WDCF_ERROR 0x04 /* processing a disk error */
#define WDCF_WANTED 0x08 /* XXX locking for wd_get_parms() */
#define WDCF_IRQ_WAIT 0x10 /* controller is waiting for irq */
#define WDCF_ONESLAVE 0x20 /* ctrl. has one ATAPI slave attached */
#define WDCF_BROKENPOLL 0x40 /* or, generally fucked up */
int sc_errors; /* errors during current transfer */
u_char sc_status; /* copy of status register */
u_char sc_error; /* copy of error register */
};
struct wd_link {
u_char type;
#define DRIVE 0
#define BUS 1
caddr_t wdc_softc;
caddr_t wd_softc;
struct wdc_link *ctlr_link;
struct wdparams sc_params;
/* Long-term state: */
u_int8_t openings;
int sc_drive; /* physical unit number */
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 ATAPI is
* implemented.
*/
#define WDF_LOADED 0x10 /* parameters loaded */
#define WDF_32BIT 0x20 /* can do 32-bit transfer */
#define WDF_WAIT 0x40 /* waiting for resourses */
daddr_t sc_badsect[127]; /* 126 plus trailing -1 marker */
struct disklabel *sc_lp; /* label info for this disk */
};
struct wdc_xfer {
struct wdc_link *c_link; /* controller structure info */
struct wd_link *d_link; /* drive/bus structure info */
volatile long c_flags; /* handle also B_READ and B_WRITE */
#define C_INUSE 0x01
#define C_ATAPI 0x02
#define C_ERROR 0x04
/* 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 */
u_long c_p_offset; /* offset of the partition */
TAILQ_ENTRY(wdc_xfer) c_xferchain;
LIST_ENTRY(wdc_xfer) free_list;
};
void wdc_exec_xfer __P((struct wd_link *, struct wdc_xfer *));
struct wdc_xfer *wdc_get_xfer __P((struct wdc_link *, int));
int wdc_get_parms __P((struct wd_link *));
void wderror __P((struct wd_link* , struct buf *, char *));
int wdsetctlr __P((struct wd_link *));
void wdstart __P((void *));
void wddone __P((struct wd_link*, struct buf*));
int wdccommand __P((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
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