linux-imx

#ifndef _IOMMU_H

#define _IOMMU_H 1

​

#include <linux/pci.h>

​

struct parisc_device;

struct ioc;

​

static inline struct pci_hba_data *parisc_walk_tree(struct device *dev)

{

    struct device *otherdev;

​

    if (likely(dev->platform_data))

        return dev->platform_data;

​

    /* OK, just traverse the bus to find it */

    for (otherdev = dev->parent;

         otherdev;

         otherdev = otherdev->parent) {

        if (otherdev->platform_data) {

            dev->platform_data = otherdev->platform_data;

            break;

        }

    }

​

    return dev->platform_data;

}

​

static inline struct ioc *GET_IOC(struct device *dev)

{

    struct pci_hba_data *pdata = parisc_walk_tree(dev);

​

    if (!pdata)

        return NULL;

    return pdata->iommu;

}

​

#ifdef CONFIG_IOMMU_CCIO

void *ccio_get_iommu(const struct parisc_device *dev);

int ccio_request_resource(const struct parisc_device *dev,

        struct resource *res);

int ccio_allocate_resource(const struct parisc_device *dev,

        struct resource *res, unsigned long size,

        unsigned long min, unsigned long max, unsigned long align);

#else /* !CONFIG_IOMMU_CCIO */

#define ccio_get_iommu(dev) NULL

#define ccio_request_resource(dev, res) insert_resource(&iomem_resource, res)

#define ccio_allocate_resource(dev, res, size, min, max, align) \

        allocate_resource(&iomem_resource, res, size, min, max, \

                align, NULL, NULL)

#endif /* !CONFIG_IOMMU_CCIO */

​

void *sba_get_iommu(struct parisc_device *dev);

​

#endif /* _IOMMU_H */