sys/arch/vax/mba/mbavar.h

   1 /*      $NetBSD: mbavar.h,v 1.12 2008/03/11 05:34:02 matt Exp $ */
   2 /*
   3  * Copyright (c) 1994 Ludd, University of Lule}, Sweden
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed at Ludd, University of Lule}.
  17  * 4. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/device.h>
  33 #include <machine/scb.h>
  34
  35 #define MBCR_INIT       1
  36 #define MBCR_IE         (1<<2)
  37 #define MBDS_DPR        (1<<8)
  38 #define MBSR_NED        (1<<18)
  39 #define MBDT_MOH        (1<<13)
  40 #define MBDT_TYPE       511
  41 #define MBDT_TAP        (1<<14)
  42
  43 #define CLOSED          0
  44 #define WANTOPEN        1
  45 #define RDLABEL         2
  46 #define OPEN            3
  47 #define OPENRAW         4
  48
  49 #define MAXMBADEV       8       /* Max units per MBA */
  50
  51 /*
  52  * Devices that have different device drivers.
  53  */
  54 enum    mb_devices {
  55         MB_UK,  /* unknown */
  56         MB_RP,  /* RM/RP disk */
  57         MB_TU,  /* TM03 based tape, ex. TU45 or TU77 */
  58         MB_MT   /* TU78 tape */
  59 };
  60
  61 /*
  62  * Current state of the adapter.
  63  */
  64 enum    sc_state {
  65         SC_AUTOCONF,
  66         SC_ACTIVE,
  67         SC_IDLE
  68 };
  69
  70 /*
  71  * Return value after a finished data transfer, from device driver.
  72  */
  73 enum    xfer_action {
  74         XFER_RESTART,
  75         XFER_FINISH
  76 };
  77
  78 /*
  79  * Info passed do unit device driver during autoconfig.
  80  */
  81 struct  mba_attach_args {
  82         int     ma_unit;
  83         int     ma_type;
  84         const char      *ma_name;
  85         enum    mb_devices ma_devtyp;
  86         bus_space_tag_t ma_iot;
  87         bus_space_handle_t ma_ioh;
  88 };
  89
  90 /*
  91  * Common struct used to communicate between the mba device driver
  92  * and the unit device driver.
  93  */
  94 struct  mba_device {
  95         STAILQ_ENTRY(mba_device) md_link; /* linked list of runnable devices */
  96         void (*md_start)(struct mba_device *);
  97                                 /* Start routine to be called by mbastart. */
  98         int (*md_attn)(struct mba_device *);
  99                                 /* Routine to be called after attn intr */
 100         enum xfer_action (*md_finish)(struct mba_device *, int, int *);
 101                                 /* Call after xfer finish */
 102         void *md_softc;         /* Backpointer to this units softc. */
 103         struct mba_softc *md_mba;
 104         struct bufq_state *md_q;        /* queue of I/O requests */
 105 };
 106
 107 struct  mba_softc {
 108         device_t sc_dev;
 109         bus_space_tag_t sc_iot;
 110         bus_space_handle_t sc_ioh;
 111         STAILQ_HEAD(,mba_device) sc_xfers;
 112         struct evcnt sc_intrcnt;
 113         enum sc_state sc_state;
 114         struct mba_device *sc_md[MAXMBADEV];
 115 };
 116
 117 struct  mbaunit {
 118         int     nr;
 119         const char    *name;
 120         enum    mb_devices devtyp;
 121 };
 122
 123 /* Common prototypes */
 124 void    mbaqueue(struct mba_device *);
 125