device.h

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/*
 * Arch specific extensions to struct device
 *
 * This file is released under the GPLv2
 */
#ifndef _ASM_POWERPC_DEVICE_H
#define _ASM_POWERPC_DEVICE_H

struct dma_map_ops;
struct device_node;

/*
 * Arch extensions to struct device.
 *
 * When adding fields, consider macio_add_one_device in
 * drivers/macintosh/macio_asic.c
 */
struct dev_archdata {
    /* DMA operations on that device */
    struct dma_map_ops  *dma_ops;

    /*
     * When an iommu is in use, dma_data is used as a ptr to the base of the
     * iommu_table.  Otherwise, it is a simple numerical offset.
     */
    union {
        dma_addr_t  dma_offset;
        void        *iommu_table_base;
    } dma_data;

#ifdef CONFIG_SWIOTLB
    dma_addr_t      max_direct_dma_addr;
#endif
#ifdef CONFIG_EEH
    struct eeh_dev      *edev;
#endif
#ifdef CONFIG_FAIL_IOMMU
    int fail_iommu;
#endif
};

struct pdev_archdata {
    u64 dma_mask;
};

#define ARCH_HAS_DMA_GET_REQUIRED_MASK

#endif /* _ASM_POWERPC_DEVICE_H */