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/* $OpenBSD: piixreg.h,v 1.3 2000/03/28 03:37:59 mickey Exp $ */
/* $NetBSD: piixreg.h,v 1.1 1999/11/17 01:21:21 thorpej Exp $ */
/*
* Copyright (c) 1999, by UCHIYAMA Yasushi
* All rights reserved.
*
* 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. The name of the developer may NOT be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
/*
* Register definitions for the Intel PIIX PCI-ISA bridge interrupt controller.
*/
/*
* PIRQ[3:0]# - PIRQ ROUTE CONTROL REGISTERS
*
* PCI Configuration registers 0x60, 0x61, 0x62, 0x63
*/
#define PIIX_LEGAL_LINK(link) ((link) >= 0 && (link) <= 3)
#define PIIX_PIRQ_MASK 0xdef8
#define PIIX_LEGAL_IRQ(irq) ((irq) >= 0 && (irq) <= 15 && \
((1 << (irq)) & PIIX_PIRQ_MASK) != 0)
#define PIIX_CFG_PIRQ 0x60 /* PCI configuration space */
#define PIIX_CFG_PIRQ_NONE 0x80
#define PIIX_CFG_PIRQ_MASK 0x0f
#define PIIX_PIRQ(reg, x) (((reg) >> ((x) << 3)) & 0xff)
/*
* ELCR - EDGE/LEVEL CONTROL REGISTER
*
* PCI I/O registers 0x4d0, 0x4d1
*/
#define PIIX_REG_ELCR 0x4d0
#define PIIX_REG_ELCR_SIZE 2
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