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Diffstat (limited to 'arch/mips/include/asm/bmips.h')
-rw-r--r--arch/mips/include/asm/bmips.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/mips/include/asm/bmips.h b/arch/mips/include/asm/bmips.h
index 30939b02e3ff..6d25ad33ec78 100644
--- a/arch/mips/include/asm/bmips.h
+++ b/arch/mips/include/asm/bmips.h
@@ -122,6 +122,22 @@ static inline void bmips_write_zscm_reg(unsigned int offset, unsigned long data)
barrier();
}
+static inline void bmips_post_dma_flush(struct device *dev)
+{
+ 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;
+
+ /* 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);
+}
+
#endif /* !defined(__ASSEMBLY__) */
#endif /* _ASM_BMIPS_H */