| 1 | #ifndef _IOMMU_H
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| 2 | #define _IOMMU_H 1
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| 3 |
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| 4 | #include <linux/pci.h>
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| 5 |
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| 6 | struct parisc_device;
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| 7 | struct ioc;
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| 8 |
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| 9 | static inline struct pci_hba_data *parisc_walk_tree(struct device *dev)
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| 10 | {
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| 11 | struct device *otherdev;
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| 12 |
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| 13 | if (likely(dev->platform_data))
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| 14 | return dev->platform_data;
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| 15 |
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| 16 |
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| 17 | for (otherdev = dev->parent;
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| 18 | otherdev;
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| 19 | otherdev = otherdev->parent) {
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| 20 | if (otherdev->platform_data) {
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| 21 | dev->platform_data = otherdev->platform_data;
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| 22 | break;
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| 23 | }
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| 24 | }
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| 25 |
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| 26 | return dev->platform_data;
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| 27 | }
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| 28 |
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| 29 | static inline struct ioc *GET_IOC(struct device *dev)
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| 30 | {
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| 31 | struct pci_hba_data *pdata = parisc_walk_tree(dev);
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| 32 |
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| 33 | if (!pdata)
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| 34 | return NULL;
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| 35 | return pdata->iommu;
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| 36 | }
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| 37 |
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| 38 | #ifdef CONFIG_IOMMU_CCIO
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| 39 | void *ccio_get_iommu(const struct parisc_device *dev);
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| 40 | int ccio_request_resource(const struct parisc_device *dev,
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| 41 | struct resource *res);
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| 42 | int ccio_allocate_resource(const struct parisc_device *dev,
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| 43 | struct resource *res, unsigned long size,
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| 44 | unsigned long min, unsigned long max, unsigned long align);
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| 45 | #else
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| 46 | #define ccio_get_iommu(dev) NULL
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| 47 | #define ccio_request_resource(dev, res) insert_resource(&iomem_resource, res)
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| 48 | #define ccio_allocate_resource(dev, res, size, min, max, align) \
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| 49 | allocate_resource(&iomem_resource, res, size, min, max, \
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| 50 | align, NULL, NULL)
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| 51 | #endif
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| 52 |
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| 53 | void *sba_get_iommu(struct parisc_device *dev);
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| 54 |
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| 55 | #endif
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