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Wrap the bit-twiddling macros so that they don't get redefined if

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more than one header file defines them.
This commit is contained in:
dyoung 2004-01-29 09:53:18 +00:00
parent 79700b81fe
commit f7b1f8ea0b
1 changed files with 5 additions and 1 deletions
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6
sys/dev/ic/atwreg.h
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@ -1,4 +1,4 @@
/* $NetBSD: atwreg.h,v 1.4 2004/01/10 06:30:36 dyoung Exp $ */
/* $NetBSD: atwreg.h,v 1.5 2004/01/29 09:53:18 dyoung Exp $ */
/*
* Copyright (c) 2003 The NetBSD Foundation, Inc. All rights reserved.
@ -49,6 +49,8 @@
/* Macros for bit twiddling. */
#ifndef _BIT_TWIDDLE
#define _BIT_TWIDDLE
/* nth bit, BIT(0) == 0x1. */
#define BIT(n) (((n) == 32) ? 0 : ((u_int32_t) 1 << (n)))
@ -87,6 +89,8 @@
#define LSHIFT(x, mask) ((x) << MASK_TO_SHIFT(mask))
#define MASK_AND_REPLACE(reg, val, mask) ((reg & ~mask) | LSHIFT(val, mask))
#endif /* _BIT_TWIDDLE */
/* ADM8211 Host Control and Status Registers */
#define ATW_PAR 0x00 /* PCI access */