MIPS: Netlogic: SWIOTLB dma ops for 32-bit DMA
Add SWIOTLB config option and related files to Netlogic platform.
Some XLP SoC components like the SD/MMC interface cannot do DMA beyond
32-bit physical address. The SD/MMC driver can use memory outside this
range for IO, to support this we have to add bounce buffers implemented
by SWIOTLB.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: Ganesan Ramalingam <ganesanr@broadcom.com>
Patchwork: https://patchwork.linux-mips.org/patch/5410/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/netlogic/Kconfig b/arch/mips/netlogic/Kconfig
index e0873a3..2447bf9 100644
--- a/arch/mips/netlogic/Kconfig
+++ b/arch/mips/netlogic/Kconfig
@@ -51,4 +51,15 @@
config NLM_COMMON
bool
+config IOMMU_HELPER
+ bool
+
+config NEED_SG_DMA_LENGTH
+ bool
+
+config SWIOTLB
+ def_bool y
+ select NEED_SG_DMA_LENGTH
+ select IOMMU_HELPER
+
endif