diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-07-24 15:06:54 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-09-11 13:43:26 +0300 |
| commit | a8e6d950cdc1012aede8a84d85f902a53d895174 (patch) | |
| tree | 278b55367505b681d9bc4dec0873eee56ec26d5d | |
| parent | bef4d2037d2143a4df6430bbe1e970fc7e616f6c (diff) | |
| download | linux-a8e6d950cdc1012aede8a84d85f902a53d895174.tar.xz | |
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 <hch@lst.de>
Reviewed-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 6 | ||||
| -rw-r--r-- | arch/arm/xen/mm.c | 12 | ||||
| -rw-r--r-- | 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 <linux/cpu.h> -#include <linux/dma-mapping.h> +#include <linux/dma-noncoherent.h> #include <linux/gfp.h> #include <linux/highmem.h> #include <linux/export.h> @@ -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 */ |