u-boot/arch/x86/include/asm/cache.h
Stefan Roese bf4ea7ed21 x86: cache.h: Add default for CONFIG_SYS_CACHELINE_SIZE
Don't just define ARCH_DMA_MINALIGN but also CONFIG_SYS_CACHELINE_SIZE
if it's undefined. This is needed for the xhci driver to compile.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-16 11:44:09 +08:00

36 lines
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C

/*
* Copyright (c) 2011 The Chromium OS Authors.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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.
*/
#ifndef CONFIG_SYS_CACHELINE_SIZE
#define CONFIG_SYS_CACHELINE_SIZE 64
#endif
#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE
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__ */