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/pc98/cbus/fdcvar.h

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    1 /*-
    2  * Copyright (c) 2004 M. Warner Losh.
    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  *    without modification, immediately at the beginning of the file.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in
   13  *    the documentation and/or other materials provided with the
   14  *    distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 /* XXX should audit this file to see if additional copyrights needed */
   32 
   33 enum fdc_type
   34 {
   35         FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1
   36 };
   37 
   38 enum fdc_states {
   39         DEVIDLE,
   40         FINDWORK,
   41         DOSEEK,
   42         SEEKCOMPLETE ,
   43         IOCOMPLETE,
   44         RECALCOMPLETE,
   45         STARTRECAL,
   46         RESETCTLR,
   47         SEEKWAIT,
   48         RECALWAIT,
   49         MOTORWAIT,
   50         IOTIMEDOUT,
   51         RESETCOMPLETE,
   52         PIOREAD
   53 };
   54 
   55 #ifdef  FDC_DEBUG
   56 static char const * const fdstates[] = {
   57         "DEVIDLE",
   58         "FINDWORK",
   59         "DOSEEK",
   60         "SEEKCOMPLETE",
   61         "IOCOMPLETE",
   62         "RECALCOMPLETE",
   63         "STARTRECAL",
   64         "RESETCTLR",
   65         "SEEKWAIT",
   66         "RECALWAIT",
   67         "MOTORWAIT",
   68         "IOTIMEDOUT",
   69         "RESETCOMPLETE",
   70         "PIOREAD"
   71 };
   72 #endif
   73 
   74 /*
   75  * Per controller structure (softc).
   76  */
   77 struct fdc_data
   78 {
   79         int     fdcu;           /* our unit number */
   80         int     dmacnt;
   81         int     dmachan;
   82         int     flags;
   83 #define FDC_STAT_VALID  0x08
   84 #define FDC_HAS_FIFO    0x10
   85 #define FDC_NEEDS_RESET 0x20
   86 #define FDC_NODMA       0x40
   87 #define FDC_ISPNP       0x80
   88 #define FDC_ISPCMCIA    0x100
   89         struct  fd_data *fd;
   90         int     fdu;            /* the active drive     */
   91         enum    fdc_states state;
   92         int     retry;
   93 #ifndef PC98
   94         int     fdout;          /* mirror of the w/o digital output reg */
   95 #endif
   96         u_int   status[7];      /* copy of the registers */
   97         enum    fdc_type fdct;  /* chip version of FDC */
   98         int     fdc_errs;       /* number of logged errors */
   99         int     dma_overruns;   /* number of DMA overruns */
  100         struct  bio_queue_head head;
  101         struct  bio *bp;        /* active buffer */
  102 #ifdef PC98
  103         struct  resource *res_ioport, *res_fdsio, *res_fdemsio;
  104         struct  resource *res_irq, *res_drq;
  105         int     rid_ioport, rid_irq, rid_drq;
  106 #else
  107         struct  resource *res_ioport, *res_ctl, *res_irq, *res_drq;
  108         int     rid_ioport, rid_ctl, rid_irq, rid_drq;
  109 #endif
  110         int     port_off;
  111         bus_space_tag_t portt;
  112         bus_space_handle_t porth;
  113 #ifdef PC98
  114         bus_space_tag_t         sc_fdsiot;
  115         bus_space_handle_t      sc_fdsioh;
  116         bus_space_tag_t         sc_fdemsiot;
  117         bus_space_handle_t      sc_fdemsioh;
  118 #else
  119         bus_space_tag_t ctlt;
  120         bus_space_handle_t ctlh;
  121 #endif
  122         void    *fdc_intr;
  123         struct  device *fdc_dev;
  124 #ifndef PC98
  125         void    (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v);
  126 #endif
  127 };
  128 
  129 typedef int     fdu_t;
  130 typedef int     fdcu_t;
  131 typedef int     fdsu_t;
  132 typedef struct fd_data *fd_p;
  133 typedef struct fdc_data *fdc_p;
  134 typedef enum fdc_type fdc_t;
  135 
  136 /* error returns for fd_cmd() */
  137 #define FD_FAILED -1
  138 #define FD_NOT_VALID -2
  139 #define FDC_ERRMAX      100     /* do not log more */
  140 
  141 extern devclass_t fdc_devclass;
  142 
  143 enum fdc_device_ivars {
  144         FDC_IVAR_FDUNIT,
  145         FDC_IVAR_FDTYPE,
  146 };
  147 
  148 __BUS_ACCESSOR(fdc, fdunit, FDC, FDUNIT, int);
  149 __BUS_ACCESSOR(fdc, fdtype, FDC, FDTYPE, int);
  150 
  151 int fdc_alloc_resources(struct fdc_data *);
  152 #ifndef PC98
  153 void fdout_wr(fdc_p, u_int8_t);
  154 #endif
  155 int fd_cmd(struct fdc_data *, int, ...);
  156 void fdc_release_resources(struct fdc_data *);
  157 int fdc_attach(device_t);
  158 int fdc_hints_probe(device_t);
  159 int fdc_detach(device_t dev);
  160 device_t fdc_add_child(device_t, const char *, int);
  161 int fdc_initial_reset(struct fdc_data *);
  162 int fdc_print_child(device_t, device_t);
  163 int fdc_read_ivar(device_t, device_t, int, uintptr_t *);
  164 int fdc_write_ivar(device_t, device_t, int, uintptr_t);
  165 #ifndef PC98
  166 int fdc_isa_alloc_resources(device_t, struct fdc_data *);
  167 #endif

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