FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/fdlink.h

     /*      $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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