4.4BSD/usr/src/sys/news3400/hbdev/hbvar.h
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Sony Corp. and Kazumasa Utashiro of Software Research Associates, Inc.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
* from: $Hdr: hbvar.h,v 4.300 91/06/09 06:21:52 root Rel41 $ SONY
*
* @(#)hbvar.h 8.1 (Berkeley) 6/11/93
*/
/*
* Copyright (c) 1987,1988 by SONY Corporation.
*/
/*
* hbvar.h.c ver 0.1
* Form Fri Dec 11 16:07:41 JST 1987
* Modify Thu Feb 2 08:57:52 JST 1989
*
*/
#ifndef __HBVAR__
#define __HBVAR__ 1
/*
* This file contains definitions related to the kernel structures
* for dealing with the HYPER-BUS interface.
*
* Each HYPER-BUS has a hb_hd structure.
* Each HYPER-BUS controller which is not a device has a hb_ctlr structure.
* Each HYPER-BUS device has a hb_device structure.
*/
#ifndef LOCORE
/*
* Per-HYPER-BUS structure.
*
* This structure holds the interrupt vector for the HYPER-BUS,
* and its address in physical and virtual space. At boot time
* we determine the devices attached to the HYPER-BUS and their
* interrupt vectors, filling in vh_vec. We free the map
* register resources of the HYPER-BUS into the structures
* defined here.
*
* During normal operation, resources are allocated and returned
* to the structures here. We watch the number of passive releases
* on each HYPER-BUS, and if the number is excessive may reset the HYPER-BUS.
*
* When HYPER-BUS resources are needed and not available,
* then device drivers may have to wait to get to the bus and are
* queued here. It is also possible for processes to block in
* the HYPER-BUS driver in resource wait (mrwant); these
* wait states are also recorded here.
*/
struct hb_hd {
caddr_t hh_phys; /* Not used and init now. */
};
/*
* Per-controller structure.
*
* If a controller has devices attached, then there are
* cross-referenced hb_drive structures.
* This structure is the one which is queued in HYPER-BUS resource wait,
* and saves the information about HYPER-BUS resources which are used.
* The queue of devices waiting to transfer is also attached here.
*/
struct hb_ctlr {
struct hb_driver *hm_driver;
short hm_ctlr; /* controller index in driver */
short hm_alive; /* controller exists */
caddr_t hm_addr; /* address of command area */
int hm_intr; /* interrupt number */
short hm_scnum ; /* the scsi it is on */
struct hb_hd *hm_hd;
int hm_hbinfo; /* save map registers, etc */
struct buf hm_tab; /* queue of devices for this controller */
};
/*
* Per ``device'' structure.
*
* If a controller has many drives attached, then there will
* be several hb_device structures associated with a single hb_ctlr
* structure.
*/
struct hb_device {
struct hb_driver *hi_driver;
short hi_unit; /* unit number on the system */
short hi_ctlr; /* mass ctlr number; -1 if none */
short hi_slave; /* slave on controller */
caddr_t hi_addr; /* address of command area */
int hi_intr; /* interrupt number */
short hi_dk; /* if init 1 set to number for iostat */
int hi_flags; /* parameter from system specification */
short hi_alive; /* device exists */
short hi_type; /* driver specific type information */
/* caddr_t hi_physaddr; /* phys addr, for standalone (dump) code */
/* this is the forward link in a list of devices on a controller */
struct hb_device *hi_forw;
/* if the device is connected to a controller, this is the controller */
struct hb_ctlr *hi_mi;
struct hb_hd *hi_hd;
};
/*
* Per-driver structure.
*
* Each HYPER-BUS driver defines entries for a set of routines
* as well as an array of types which are acceptable to it.
* These are used at boot time by the configuration program.
*/
struct hb_driver {
int (*hd_probe)(); /* see if a driver is really there */
int (*hd_slave)(); /* see if a slave is there */
int (*hd_attach)(); /* setup driver for a slave */
int (*hd_dgo)(); /* start transfer */
int (*hd_intr)(); /* interrupt handler */
char *hd_dname; /* name of a device */
struct hb_device **hd_dinfo; /* backpointers to hdinit structs */
char *hd_mname; /* name of a controller */
struct hb_ctlr **hd_minfo; /* backpointers to hminit structs */
short hd_xclu; /* want exclusive use */
};
#ifdef KERNEL
/*
* HYPER-BUS related kernel variables
*/
struct hb_hd hb_hd;
/*
* Hbinit and hdinit initialize the mass storage controller and
* device tables specifying possible devices.
*/
extern struct hb_ctlr hminit[];
extern struct hb_device hdinit[];
#endif /* KERNEL */
#endif /* !LOCORE */
#endif /* !__HBVAR__ */