mirror of
https://github.com/torvalds/linux.git
synced 2024-12-21 10:31:54 +00:00
cb0f7ab4a4
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Helge Deller <deller@gmx.de>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#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 */
|