/*      $NetBSD: sis85c503reg.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 SiS 85c503 PCI-ISA bridge interrupt controller.
*/

#define SIS85C503_CFG_PIRQ_REGSTART     0x41    /* PCI configuration space */
#define SIS85C503_CFG_PIRQ_REGEND       0x44

#define SIS85C503_LEGAL_LINK(link) ((link) >= SIS85C503_CFG_PIRQ_REGSTART && \
                                   (link) <= SIS85C503_CFG_PIRQ_REGEND)

#define SIS85C503_CFG_PIRQ_REGOFS(regofs) (((regofs) >> 2) << 2)
#define SIS85C503_CFG_PIRQ_SHIFT(regofs)                                \
       (((regofs) - SIS85C503_CFG_PIRQ_REGOFS(regofs)) << 3)

#define SIS85C503_CFG_PIRQ_MASK         0xff
#define SIS85C503_CFG_PIRQ_INTR_MASK    0x0f

#define SIS85C503_CFG_PIRQ_REG(reg, regofs)                             \
       (((reg) >> SIS85C503_CFG_PIRQ_SHIFT(regofs)) & SIS85C503_CFG_PIRQ_MASK)

#define SIS85C503_CFG_PIRQ_ROUTE_DISABLE 0x80

#define SIS85C503_PIRQ_MASK             0xdef8
#define SIS85C503_LEGAL_IRQ(irq)        ((irq) >= 0 && (irq) <= 15 &&   \
                                ((1 << (irq)) & SIS85C503_PIRQ_MASK) != 0)

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