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// SPDX-License-Identifier: GPL-2.0+
#include <linux/types.h>
#include <linux/dma-map-ops.h>
#include <asm/bmips.h>
#include <asm/io.h>
bool bmips_rac_flush_disable;
void arch_sync_dma_for_cpu_all(void)
{
void __iomem *cbr = BMIPS_GET_CBR();
u32 cfg;
if (boot_cpu_type() != CPU_BMIPS3300 &&
boot_cpu_type() != CPU_BMIPS4350 &&
boot_cpu_type() != CPU_BMIPS4380)
return;
if (unlikely(bmips_rac_flush_disable))
return;
/* Flush stale data out of the readahead cache */
cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG);
__raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG);
__raw_readl(cbr + BMIPS_RAC_CONFIG);
}
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