139 lines
4.9 KiB
C
139 lines
4.9 KiB
C
/* $NetBSD: dioreg.h,v 1.8 2011/03/06 14:51:21 tsutsui Exp $ */
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/*-
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* Copyright (c) 1996 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Portions of this file are derived from software contributed to Berkeley
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* by the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Register definitions for the DIO and DIO-II bus.
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*/
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/*
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* DIO/DIO-II device registers, offsets from base of device. All
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* registers are 8-bit.
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*/
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#define DIO_IDOFF 0x01 /* primary device id */
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#define DIO_IPLOFF 0x03 /* interrupt level */
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#define DIO_SECIDOFF 0x15 /* secondary device id */
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#define DIOII_SIZEOFF 0x101 /* device size */
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/*
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* System physical addresses of some `special' DIO devices.
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*/
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#define DIO_IHPIBADDR 0x478000 /* internal HP-IB; select code 7 */
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/*
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* DIO ranges from select codes 0-63 at physical addresses given by:
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* 0x600000 + (sc - 32) * 0x10000
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* DIO cards are addressed in the range 0-31 [0x600000-0x800000) for
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* their control space and the remaining areas, [0x200000-0x400000) and
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* [0x800000-0x1000000), are for additional space required by a card;
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* e.g. a display framebuffer.
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*
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* DIO-II ranges from select codes 132-255 at physical addresses given by:
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* 0x1000000 + (sc - 132) * 0x400000
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* The address range of DIO-II space is thus [0x1000000-0x20000000).
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*
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* DIO/DIO-II space is too large to map in its entirety, instead devices
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* are mapped into kernel virtual address space allocated from a range
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* of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''.
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*/
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#define DIO_BASE 0x600000 /* start of DIO space */
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#define DIO_END 0x1000000 /* end of DIO space */
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#define DIO_DEVSIZE 0x10000 /* size of a DIO device */
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#define DIOII_BASE 0x01000000 /* start of DIO-II space */
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#define DIOII_END 0x20000000 /* end of DIO-II space */
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#define DIOII_DEVSIZE 0x00400000 /* size of a DIO-II device */
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/*
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* Find the highest select code for a given machine; HP320 doesn't
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* have DIO-II.
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*/
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#define DIO_SCMAX(machineid) ((machineid) == HP_320 ? 32 : 256)
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/*
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* Base of DIO-II select codes.
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*/
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#define DIOII_SCBASE 132
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/*
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* Macro that returns true if a select code lies within
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* the select code `hole'.
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*/
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#define DIO_INHOLE(scode) ((scode) >= 32 && (scode) < 132)
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/*
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* Macros to determine if device is DIO or DIO-II.
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*/
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#define DIO_ISDIO(scode) ((scode) >= 0 && (scode) < 32)
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#define DIO_ISDIOII(scode) ((scode) >= DIOII_SCBASE && (scode) < 256)
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/*
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* Macro to determine if device is a framebuffer, given the
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* primary id of the device. We key off this to determine if
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* we should look at secondary id and ignore interrupt level.
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*/
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#define DIO_ISFRAMEBUFFER(id) \
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((id) == DIO_DEVICE_ID_FRAMEBUFFER)
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/*
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* Macro to extract primary and decondary device ids, given
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* the base address of the device.
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*/
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#define DIO_ID(base) \
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(*((uint8_t *)((u_long)(base) + DIO_IDOFF)))
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#define DIO_SECID(base) \
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(*((uint8_t *)((u_long)(base) + DIO_SECIDOFF)))
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/*
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* Macro to extract the interrupt level, given the
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* base address of the device.
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*/
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#define DIO_IPL(base) \
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((((*((uint8_t *)((u_long)(base) + DIO_IPLOFF))) >> 4) & 0x03) + 3)
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/*
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* Macro to compute the size of a DIO-II device's address
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* space, given the base address of the device.
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*/
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#define DIOII_SIZE(base) \
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((int)((*((uint8_t *)((u_long)(base) + DIOII_SIZEOFF)) + 1) \
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* 0x100000))
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/*
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* Given a select code and device base address, compute
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* the size of the DIO/DIO-II device.
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*/
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#define DIO_SIZE(scode, base) \
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(DIO_ISDIOII((scode)) ? DIOII_SIZE((base)) : DIO_DEVSIZE)
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