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/* $OpenBSD: fdlink.h,v 1.9 2007/04/10 17:47:55 miod Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995 Charles Hannum.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Don Ahn.
*
* Portions Copyright (c) 1993, 1994 by
* jc@irbs.UUCP (John Capo)
* vak@zebub.msk.su (Serge Vakulenko)
* ache@astral.msk.su (Andrew A. Chernov)
* joerg_wunsch@uriah.sax.de (Joerg Wunsch)
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
*/
/*
* The goo that binds the floppy controller to its devices.
*/
enum fdc_state {
DEVIDLE = 0,
MOTORWAIT,
DOSEEK,
SEEKWAIT,
SEEKTIMEDOUT,
SEEKCOMPLETE,
DOIO,
IOCOMPLETE,
IOTIMEDOUT,
DORESET,
RESETCOMPLETE,
RESETTIMEDOUT,
DORECAL,
RECALWAIT,
RECALTIMEDOUT,
RECALCOMPLETE
};
enum fdc_type {
FDC_TYPE_TAPE,
FDC_TYPE_DISK
};
/* software state, per controller */
struct fd_softc;
struct fdc_fdlink {
struct fd_softc *sc_fd[4]; /* pointers to children */
TAILQ_HEAD(drivehead, fd_softc) sc_drives;
};
struct ft_softc;
struct fdc_ftlink {
struct ft_softc *sc_ft[4]; /* pointers to children */
};
struct fdc_softc {
struct device sc_dev; /* boilerplate */
struct isadev sc_id;
void *sc_ih;
bus_space_tag_t sc_iot; /* ISA chipset identifier */
bus_space_handle_t sc_ioh; /* ISA io handle */
bus_space_handle_t sc_ioh_ctl; /* ISA io handle */
int sc_drq;
enum fdc_type sc_type[4]; /* type of device */
union {
struct fdc_fdlink fdlink;
struct fdc_ftlink ftlink;
} sc_link;
enum fdc_state sc_state;
int sc_errors; /* number of retries so far */
struct timeout fdcpseudointr_to;
u_char sc_status[7]; /* copy of registers */
};
/*
* Arguments passed between fdcattach and f[dt]probe.
*/
struct fdc_attach_args {
int fa_drive;
int fa_flags;
int fa_type; /* tape drive type */
struct fd_type *fa_deftype;
};
/* Functions from fdc.c. */
int fdcresult(struct fdc_softc *);
int out_fdc(bus_space_tag_t, bus_space_handle_t, u_char);
void fdcstart(struct fdc_softc *);
void fdcstatus(struct device *, int, char *);
void fdcpseudointr(void *);
/* Functions from fd.c. */
struct fd_type *fd_nvtotype(char *, int, int);
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