文件操作 - device.h
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文件: /usr/src/linux-headers-5.15.0-113/arch/arm/include/asm/device.h
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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Arch specific extensions to struct device */ #ifndef ASMARM_DEVICE_H #define ASMARM_DEVICE_H struct dev_archdata { #ifdef CONFIG_DMABOUNCE struct dmabounce_device_info *dmabounce; #endif #ifdef CONFIG_ARM_DMA_USE_IOMMU struct dma_iommu_mapping *mapping; #endif unsigned int dma_coherent:1; unsigned int dma_ops_setup:1; }; struct omap_device; struct pdev_archdata { #ifdef CONFIG_ARCH_OMAP struct omap_device *od; #endif }; #ifdef CONFIG_ARM_DMA_USE_IOMMU #define to_dma_iommu_mapping(dev) ((dev)->archdata.mapping) #else #define to_dma_iommu_mapping(dev) NULL #endif #endif
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