From a8e6d950cdc1012aede8a84d85f902a53d895174 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 24 Jul 2019 14:06:54 +0200 Subject: [PATCH] xen/arm: use dev_is_dma_coherent Use the dma-noncoherent dev_is_dma_coherent helper instead of the home grown variant. Note that both are always initialized to the same value in arch_setup_dma_ops. Signed-off-by: Christoph Hellwig Reviewed-by: Julien Grall Reviewed-by: Stefano Stabellini --- arch/arm/include/asm/dma-mapping.h | 6 ------ arch/arm/xen/mm.c | 12 ++++++------ arch/arm64/include/asm/dma-mapping.h | 9 --------- 3 files changed, 6 insertions(+), 21 deletions(-) diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index dba9355e2484..bdd80ddbca34 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -91,12 +91,6 @@ static inline dma_addr_t virt_to_dma(struct device *dev, void *addr) } #endif -/* do not use this function in a driver */ -static inline bool is_device_dma_coherent(struct device *dev) -{ - return dev->archdata.dma_coherent; -} - /** * arm_dma_alloc - allocate consistent memory for DMA * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index d33b77e9add3..90574d89d0d4 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only #include -#include +#include #include #include #include @@ -99,7 +99,7 @@ void __xen_dma_map_page(struct device *hwdev, struct page *page, dma_addr_t dev_addr, unsigned long offset, size_t size, enum dma_data_direction dir, unsigned long attrs) { - if (is_device_dma_coherent(hwdev)) + if (dev_is_dma_coherent(hwdev)) return; if (attrs & DMA_ATTR_SKIP_CPU_SYNC) return; @@ -112,7 +112,7 @@ void __xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle, unsigned long attrs) { - if (is_device_dma_coherent(hwdev)) + if (dev_is_dma_coherent(hwdev)) return; if (attrs & DMA_ATTR_SKIP_CPU_SYNC) return; @@ -123,7 +123,7 @@ void __xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle, void __xen_dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t handle, size_t size, enum dma_data_direction dir) { - if (is_device_dma_coherent(hwdev)) + if (dev_is_dma_coherent(hwdev)) return; __xen_dma_page_dev_to_cpu(hwdev, handle, size, dir); } @@ -131,7 +131,7 @@ void __xen_dma_sync_single_for_cpu(struct device *hwdev, void __xen_dma_sync_single_for_device(struct device *hwdev, dma_addr_t handle, size_t size, enum dma_data_direction dir) { - if (is_device_dma_coherent(hwdev)) + if (dev_is_dma_coherent(hwdev)) return; __xen_dma_page_cpu_to_dev(hwdev, handle, size, dir); } @@ -159,7 +159,7 @@ bool xen_arch_need_swiotlb(struct device *dev, * memory and we are not able to flush the cache. */ return (!hypercall_cflush && (xen_pfn != bfn) && - !is_device_dma_coherent(dev)); + !dev_is_dma_coherent(dev)); } int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, diff --git a/arch/arm64/include/asm/dma-mapping.h b/arch/arm64/include/asm/dma-mapping.h index bdcb0922a40c..67243255a858 100644 --- a/arch/arm64/include/asm/dma-mapping.h +++ b/arch/arm64/include/asm/dma-mapping.h @@ -18,14 +18,5 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) return NULL; } -/* - * Do not use this function in a driver, it is only provided for - * arch/arm/mm/xen.c, which is used by arm64 as well. - */ -static inline bool is_device_dma_coherent(struct device *dev) -{ - return dev->dma_coherent; -} - #endif /* __KERNEL__ */ #endif /* __ASM_DMA_MAPPING_H */