The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/isa/fdc.h

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    1 /*-
    2  * Copyright (c) 1990 The Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by the University of
   16  *      California, Berkeley and its contributors.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      from:   @(#)fd.c        7.4 (Berkeley) 5/25/91
   34  * $FreeBSD: src/sys/isa/fdc.h,v 1.20.2.3 2002/02/03 14:08:46 nyan Exp $
   35  *
   36  */
   37 
   38 enum fdc_type
   39 {
   40         FDC_NE765, FDC_I82077, FDC_NE72065, FDC_UNKNOWN = -1
   41 };
   42 
   43 
   44 /***********************************************************************\
   45 * Per controller structure.                                             *
   46 \***********************************************************************/
   47 struct fdc_data
   48 {
   49         int     fdcu;           /* our unit number */
   50         int     dmachan;
   51         int     flags;
   52 #define FDC_ATTACHED    0x01
   53 #define FDC_STAT_VALID  0x08
   54 #define FDC_HAS_FIFO    0x10
   55 #define FDC_NEEDS_RESET 0x20
   56 #define FDC_NODMA       0x40
   57 #define FDC_ISPNP       0x80
   58 #define FDC_ISPCMCIA    0x100
   59         struct  fd_data *fd;
   60         int     fdu;            /* the active drive     */
   61         int     state;
   62         int     retry;
   63 #ifndef PC98
   64         int     fdout;          /* mirror of the w/o digital output reg */
   65 #endif
   66         u_int   status[7];      /* copy of the registers */
   67         enum    fdc_type fdct;  /* chip version of FDC */
   68         int     fdc_errs;       /* number of logged errors */
   69         struct  buf_queue_head head;
   70         struct  buf *bp;        /* active buffer */
   71         int     dma_overruns;   /* number of DMA overruns */
   72 #ifdef PC98
   73         struct  resource *res_ioport, *res_fdsio, *res_fdemsio;
   74         struct  resource *res_irq, *res_drq;
   75         int     rid_ioport, rid_irq, rid_drq;
   76 #else
   77         struct  resource *res_ioport, *res_ctl, *res_irq, *res_drq;
   78         int     rid_ioport, rid_ctl, rid_irq, rid_drq;
   79 #endif
   80         int     port_off;
   81         bus_space_tag_t portt;
   82         bus_space_handle_t porth;
   83 #ifdef PC98
   84         bus_space_tag_t         sc_fdsiot;
   85         bus_space_handle_t      sc_fdsioh;
   86         bus_space_tag_t         sc_fdemsiot;
   87         bus_space_handle_t      sc_fdemsioh;
   88 #else
   89         bus_space_tag_t ctlt;
   90         bus_space_handle_t ctlh;
   91 #endif
   92         void    *fdc_intr;
   93         struct  device *fdc_dev;
   94 #ifndef PC98
   95         void    (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v);
   96 #endif
   97 };
   98 
   99 /***********************************************************************\
  100 * Throughout this file the following conventions will be used:          *
  101 * fd is a pointer to the fd_data struct for the drive in question       *
  102 * fdc is a pointer to the fdc_data struct for the controller            *
  103 * fdu is the floppy drive unit number                                   *
  104 * fdcu is the floppy controller unit number                             *
  105 * fdsu is the floppy drive unit number on that controller. (sub-unit)   *
  106 \***********************************************************************/
  107 typedef int     fdu_t;
  108 typedef int     fdcu_t;
  109 typedef int     fdsu_t;
  110 typedef struct fd_data *fd_p;
  111 typedef struct fdc_data *fdc_p;
  112 typedef enum fdc_type fdc_t;
  113 
  114 #define FDUNIT(s)       (((s) >> 6) & 3)
  115 #define FDTYPE(s)       ((s) & 0x3f)
  116 
  117 /*
  118  * fdc maintains a set (1!) of ivars per child of each controller.
  119  */
  120 enum fdc_device_ivars {
  121         FDC_IVAR_FDUNIT,
  122 };
  123 
  124 /*
  125  * Simple access macros for the ivars.
  126  */
  127 #define FDC_ACCESSOR(A, B, T)                                           \
  128 static __inline T fdc_get_ ## A(device_t dev)                           \
  129 {                                                                       \
  130         uintptr_t v;                                                    \
  131         BUS_READ_IVAR(device_get_parent(dev), dev, FDC_IVAR_ ## B, &v); \
  132         return (T) v;                                                   \
  133 }
  134 FDC_ACCESSOR(fdunit,    FDUNIT, int)

Cache object: d686c6fac55c985162d0b2559351f188


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