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Diffstat (limited to 'sys/dev/isa/wdlink.h')
| -rw-r--r-- | sys/dev/isa/wdlink.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/sys/dev/isa/wdlink.h b/sys/dev/isa/wdlink.h new file mode 100644 index 00000000000..0a6ba4e6362 --- /dev/null +++ b/sys/dev/isa/wdlink.h @@ -0,0 +1,151 @@ +/* $NetBSD: $ */ + +/* + * 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; + int sc_iobase; /* I/O port base */ + 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 */ + 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 OPEN 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 *)); +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 |