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55 lines
1.4 KiB
55 lines
1.4 KiB
#ifndef _IOMMU_H |
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#define _IOMMU_H 1 |
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#include <linux/pci.h> |
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struct parisc_device; |
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struct ioc; |
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static inline struct pci_hba_data *parisc_walk_tree(struct device *dev) |
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{ |
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struct device *otherdev; |
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if (likely(dev->platform_data)) |
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return dev->platform_data; |
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/* OK, just traverse the bus to find it */ |
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for (otherdev = dev->parent; |
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otherdev; |
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otherdev = otherdev->parent) { |
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if (otherdev->platform_data) { |
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dev->platform_data = otherdev->platform_data; |
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break; |
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} |
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} |
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return dev->platform_data; |
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} |
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static inline struct ioc *GET_IOC(struct device *dev) |
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{ |
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struct pci_hba_data *pdata = parisc_walk_tree(dev); |
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if (!pdata) |
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return NULL; |
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return pdata->iommu; |
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} |
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#ifdef CONFIG_IOMMU_CCIO |
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void *ccio_get_iommu(const struct parisc_device *dev); |
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int ccio_request_resource(const struct parisc_device *dev, |
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struct resource *res); |
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int ccio_allocate_resource(const struct parisc_device *dev, |
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struct resource *res, unsigned long size, |
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unsigned long min, unsigned long max, unsigned long align); |
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#else /* !CONFIG_IOMMU_CCIO */ |
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#define ccio_get_iommu(dev) NULL |
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#define ccio_request_resource(dev, res) insert_resource(&iomem_resource, res) |
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#define ccio_allocate_resource(dev, res, size, min, max, align) \ |
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allocate_resource(&iomem_resource, res, size, min, max, \ |
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align, NULL, NULL) |
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#endif /* !CONFIG_IOMMU_CCIO */ |
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void *sba_get_iommu(struct parisc_device *dev); |
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#endif /* _IOMMU_H */
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