9 static inline void *parisc_walk_tree(struct device *dev)
11 struct device *otherdev;
13 if (likely(dev->platform_data))
14 return dev->platform_data;
16 /* OK, just traverse the bus to find it */
17 for (otherdev = dev->parent;
19 otherdev = otherdev->parent) {
20 if (otherdev->platform_data) {
21 dev->platform_data = otherdev->platform_data;
26 return dev->platform_data;
29 #define GET_IOC(dev) ({ \
30 void *__pdata = parisc_walk_tree(dev); \
31 __pdata ? HBA_DATA(__pdata)->iommu : NULL; \
34 #ifdef CONFIG_IOMMU_CCIO
35 void *ccio_get_iommu(const struct parisc_device *dev);
36 int ccio_request_resource(const struct parisc_device *dev,
37 struct resource *res);
38 int ccio_allocate_resource(const struct parisc_device *dev,
39 struct resource *res, unsigned long size,
40 unsigned long min, unsigned long max, unsigned long align);
41 #else /* !CONFIG_IOMMU_CCIO */
42 #define ccio_get_iommu(dev) NULL
43 #define ccio_request_resource(dev, res) insert_resource(&iomem_resource, res)
44 #define ccio_allocate_resource(dev, res, size, min, max, align) \
45 allocate_resource(&iomem_resource, res, size, min, max, \
47 #endif /* !CONFIG_IOMMU_CCIO */
49 void *sba_get_iommu(struct parisc_device *dev);