arch/x86/include/asm/cache.h

/*
 * Copyright (c) 2011 The Chromium OS Authors.
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef __X86_CACHE_H__
#define __X86_CACHE_H__

/*
 * If CONFIG_SYS_CACHELINE_SIZE is defined use it for DMA alignment.  Otherwise
 * use 64-bytes, a safe default for x86.
 */
#ifdef CONFIG_SYS_CACHELINE_SIZE
#define ARCH_DMA_MINALIGN	CONFIG_SYS_CACHELINE_SIZE
#else
#define ARCH_DMA_MINALIGN	64
#endif

static inline void wbinvd(void)
{
	asm volatile ("wbinvd" : : : "memory");
}

static inline void invd(void)
{
	asm volatile("invd" : : : "memory");
}

/* Enable caches and write buffer */
void enable_caches(void);

/* Disable caches and write buffer */
void disable_caches(void);

#endif /* __X86_CACHE_H__ */