126 lines
3.6 KiB
C
126 lines
3.6 KiB
C
/* $NetBSD: mbavar.h,v 1.13 2008/10/16 12:47:22 hans Exp $ */
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/*
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* Copyright (c) 1994 Ludd, University of Lule}, Sweden
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed at Ludd, University of Lule}.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/device.h>
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#include <machine/scb.h>
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#define MBCR_INIT 1
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#define MBCR_IE (1<<2)
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#define MBDS_DPR (1<<8)
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#define MBSR_NED (1<<18)
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#define MBDT_MOH (1<<13)
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#define MBDT_TYPE 511
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#define MBDT_TAP (1<<14)
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#define CLOSED 0
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#define WANTOPEN 1
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#define RDLABEL 2
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#define OPEN 3
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#define OPENRAW 4
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#define MAXMBADEV 8 /* Max units per MBA */
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/*
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* Devices that have different device drivers.
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*/
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enum mb_devices {
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MB_UK, /* unknown */
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MB_RP, /* RM/RP disk */
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MB_TU, /* TM03 based tape, ex. TU45 or TU77 */
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MB_MT /* TU78 tape */
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};
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/*
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* Current state of the adapter.
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*/
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enum sc_state {
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SC_AUTOCONF,
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SC_ACTIVE,
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SC_IDLE
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};
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/*
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* Return value after a finished data transfer, from device driver.
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*/
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enum xfer_action {
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XFER_RESTART,
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XFER_FINISH
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};
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/*
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* Info passed do unit device driver during autoconfig.
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*/
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struct mba_attach_args {
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int ma_unit;
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int ma_type;
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const char *ma_name;
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enum mb_devices ma_devtyp;
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bus_space_tag_t ma_iot;
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bus_space_handle_t ma_ioh;
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};
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/*
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* Common struct used to communicate between the mba device driver
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* and the unit device driver.
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*/
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struct mba_device {
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STAILQ_ENTRY(mba_device) md_link; /* linked list of runnable devices */
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void (*md_start)(struct mba_device *);
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/* Start routine to be called by mbastart. */
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int (*md_attn)(struct mba_device *);
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/* Routine to be called after attn intr */
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enum xfer_action (*md_finish)(struct mba_device *, int, int *);
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/* Call after xfer finish */
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void *md_softc; /* Backpointer to this units softc. */
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struct mba_softc *md_mba;
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struct bufq_state *md_q; /* queue of I/O requests */
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};
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struct mba_softc {
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device_t sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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STAILQ_HEAD(,mba_device) sc_xfers;
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struct evcnt sc_intrcnt;
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enum sc_state sc_state;
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struct mba_device *sc_md[MAXMBADEV];
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};
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struct mbaunit {
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int nr;
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const char *name;
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enum mb_devices devtyp;
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};
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/* Common prototypes */
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void mbaqueue(struct mba_device *);
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