MIPS: DMA: Implement platform hook to perform post-DMA cache flushes.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/mach-ath25/dma-coherence.h b/arch/mips/include/asm/mach-ath25/dma-coherence.h
index 65084a0..d5defdd 100644
--- a/arch/mips/include/asm/mach-ath25/dma-coherence.h
+++ b/arch/mips/include/asm/mach-ath25/dma-coherence.h
@@ -69,4 +69,8 @@
#endif
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
#endif /* __ASM_MACH_ATH25_DMA_COHERENCE_H */
diff --git a/arch/mips/include/asm/mach-bmips/dma-coherence.h b/arch/mips/include/asm/mach-bmips/dma-coherence.h
index 65e95b0..509ab72 100644
--- a/arch/mips/include/asm/mach-bmips/dma-coherence.h
+++ b/arch/mips/include/asm/mach-bmips/dma-coherence.h
@@ -45,4 +45,8 @@
return 0;
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
#endif /* __ASM_MACH_BMIPS_DMA_COHERENCE_H */
diff --git a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
index f9f4486..460042e 100644
--- a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
+++ b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
@@ -57,6 +57,10 @@
return 1;
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr);
diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h
index 7629c35..6713309 100644
--- a/arch/mips/include/asm/mach-generic/dma-coherence.h
+++ b/arch/mips/include/asm/mach-generic/dma-coherence.h
@@ -52,6 +52,10 @@
return coherentio;
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
#ifdef CONFIG_SWIOTLB
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
{
diff --git a/arch/mips/include/asm/mach-ip27/dma-coherence.h b/arch/mips/include/asm/mach-ip27/dma-coherence.h
index 4ffddfd..1daa644 100644
--- a/arch/mips/include/asm/mach-ip27/dma-coherence.h
+++ b/arch/mips/include/asm/mach-ip27/dma-coherence.h
@@ -58,6 +58,10 @@
return 1;
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
static inline int plat_device_is_coherent(struct device *dev)
{
return 1; /* IP27 non-cohernet mode is unsupported */
diff --git a/arch/mips/include/asm/mach-ip32/dma-coherence.h b/arch/mips/include/asm/mach-ip32/dma-coherence.h
index 104cfbc..0a0b0e2 100644
--- a/arch/mips/include/asm/mach-ip32/dma-coherence.h
+++ b/arch/mips/include/asm/mach-ip32/dma-coherence.h
@@ -80,6 +80,10 @@
return 1;
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
static inline int plat_device_is_coherent(struct device *dev)
{
return 0; /* IP32 is non-cohernet */
diff --git a/arch/mips/include/asm/mach-jazz/dma-coherence.h b/arch/mips/include/asm/mach-jazz/dma-coherence.h
index 949003e..dc347c2 100644
--- a/arch/mips/include/asm/mach-jazz/dma-coherence.h
+++ b/arch/mips/include/asm/mach-jazz/dma-coherence.h
@@ -48,6 +48,10 @@
return 1;
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
static inline int plat_device_is_coherent(struct device *dev)
{
return 0;
diff --git a/arch/mips/include/asm/mach-loongson/dma-coherence.h b/arch/mips/include/asm/mach-loongson/dma-coherence.h
index a905341..4bf4e19 100644
--- a/arch/mips/include/asm/mach-loongson/dma-coherence.h
+++ b/arch/mips/include/asm/mach-loongson/dma-coherence.h
@@ -78,4 +78,8 @@
#endif /* CONFIG_DMA_NONCOHERENT */
}
+static inline void plat_post_dma_flush(struct device *dev)
+{
+}
+
#endif /* __ASM_MACH_LOONGSON_DMA_COHERENCE_H */
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index af5f046..609d124 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -258,7 +258,7 @@
if (cpu_needs_post_dma_flush(dev))
__dma_sync(dma_addr_to_page(dev, dma_addr),
dma_addr & ~PAGE_MASK, size, direction);
-
+ plat_post_dma_flush(dev);
plat_unmap_dma_mem(dev, dma_addr, size, direction);
}
@@ -312,6 +312,7 @@
if (cpu_needs_post_dma_flush(dev))
__dma_sync(dma_addr_to_page(dev, dma_handle),
dma_handle & ~PAGE_MASK, size, direction);
+ plat_post_dma_flush(dev);
}
static void mips_dma_sync_single_for_device(struct device *dev,
@@ -331,6 +332,7 @@
for (i = 0; i < nelems; i++, sg++)
__dma_sync(sg_page(sg), sg->offset, sg->length,
direction);
+ plat_post_dma_flush(dev);
}
static void mips_dma_sync_sg_for_device(struct device *dev,