MIPS: loongson: untangle dma implementations
Only loongson-3 is DMA coherent and uses swiotlb. So move the dma
address translations stubs directly to the loongson-3 code, and remove
a few Kconfig indirections.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Patchwork: https://patchwork.linux-mips.org/patch/19539/
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Tom Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: iommu@lists.linux-foundation.org
Cc: linux-mips@linux-mips.org
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 7c539a3..6248bef 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -454,7 +454,6 @@
config MACH_LOONGSON64
bool "Loongson-2/3 family of machines"
- select ARCH_HAS_PHYS_TO_DMA
select SYS_SUPPORTS_ZBOOT
help
This enables the support of Loongson-2/3 family of machines.
@@ -1389,6 +1388,7 @@
config CPU_LOONGSON3
bool "Loongson 3 CPU"
depends on SYS_HAS_CPU_LOONGSON3
+ select ARCH_HAS_PHYS_TO_DMA
select CPU_SUPPORTS_64BIT_KERNEL
select CPU_SUPPORTS_HIGHMEM
select CPU_SUPPORTS_HUGEPAGES