From 886643b766321f15f63bd950be618cbb6dd22bbc Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 8 Oct 2018 09:12:01 +0200 Subject: arm64: use the generic swiotlb_dma_ops Now that the generic swiotlb code supports non-coherent DMA we can switch to it for arm64. For that we need to refactor the existing alloc/free/mmap/pgprot helpers to be used as the architecture hooks, and implement the standard arch_sync_dma_for_{device,cpu} hooks for cache maintaincance in the streaming dma hooks, which also implies using the generic dma_coherent flag in struct device. Note that we need to keep the old is_device_dma_coherent function around for now, so that the shared arm/arm64 Xen code keeps working. Signed-off-by: Christoph Hellwig Acked-by: Catalin Marinas --- arch/arm64/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/arm64/Kconfig') diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1b1a0e95c751..c4db5131d837 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -11,6 +11,8 @@ config ARM64 select ARCH_CLOCKSOURCE_DATA select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEVMEM_IS_ALLOWED + select ARCH_HAS_DMA_COHERENT_TO_PFN + select ARCH_HAS_DMA_MMAP_PGPROT select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FAST_MULTIPLIER @@ -24,6 +26,8 @@ config ARM64 select ARCH_HAS_SG_CHAIN select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX + select ARCH_HAS_SYNC_DMA_FOR_DEVICE + select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAVE_NMI_SAFE_CMPXCHG -- cgit v1.2.3