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      1 /*	$NetBSD: sis85c503reg.h,v 1.1 1999/11/17 01:21:21 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, by UCHIYAMA Yasushi
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the developer may NOT be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * Register definitions for the SiS 85c503 PCI-ISA bridge interrupt controller.
     30  */
     31 
     32 #define	SIS85C503_CFG_PIRQ_REGSTART	0x41	/* PCI configuration space */
     33 #define	SIS85C503_CFG_PIRQ_REGEND	0x44
     34 
     35 #define	SIS85C503_LEGAL_LINK(link) ((link) >= SIS85C503_CFG_PIRQ_REGSTART && \
     36 				    (link) <= SIS85C503_CFG_PIRQ_REGEND)
     37 
     38 #define	SIS85C503_CFG_PIRQ_REGOFS(regofs) (((regofs) >> 2) << 2)
     39 #define	SIS85C503_CFG_PIRQ_SHIFT(regofs)				\
     40 	(((regofs) - SIS85C503_CFG_PIRQ_REGOFS(regofs)) << 3)
     41 
     42 #define	SIS85C503_CFG_PIRQ_MASK		0xff
     43 #define	SIS85C503_CFG_PIRQ_INTR_MASK	0x0f
     44 
     45 #define	SIS85C503_CFG_PIRQ_REG(reg, regofs)				\
     46 	(((reg) >> SIS85C503_CFG_PIRQ_SHIFT(regofs)) & SIS85C503_CFG_PIRQ_MASK)
     47 
     48 #define	SIS85C503_CFG_PIRQ_ROUTE_DISABLE 0x80
     49 
     50 #define	SIS85C503_PIRQ_MASK		0xdef8
     51 #define	SIS85C503_LEGAL_IRQ(irq)	((irq) >= 0 && (irq) <= 15 &&	\
     52 				 ((1 << (irq)) & SIS85C503_PIRQ_MASK) != 0)
     53