a42a7a1fb5
Since the data pointer in the DT node is public and may be overwritten by conflicting code, move the DT-probed IOMMU ops to a private list where they will be safe. Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> [will: added missing #include and missing ')'] Signed-off-by: Will Deacon <will.deacon@arm.com>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
#ifndef __OF_IOMMU_H
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#define __OF_IOMMU_H
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#include <linux/device.h>
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#include <linux/iommu.h>
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#include <linux/of.h>
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#ifdef CONFIG_OF_IOMMU
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extern int of_get_dma_window(struct device_node *dn, const char *prefix,
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int index, unsigned long *busno, dma_addr_t *addr,
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size_t *size);
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extern void of_iommu_init(void);
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extern struct iommu_ops *of_iommu_configure(struct device *dev);
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#else
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static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
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int index, unsigned long *busno, dma_addr_t *addr,
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size_t *size)
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{
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return -EINVAL;
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}
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static inline void of_iommu_init(void) { }
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static inline struct iommu_ops *of_iommu_configure(struct device *dev)
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{
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return NULL;
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}
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#endif /* CONFIG_OF_IOMMU */
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void of_iommu_set_ops(struct device_node *np, struct iommu_ops *ops);
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struct iommu_ops *of_iommu_get_ops(struct device_node *np);
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extern struct of_device_id __iommu_of_table;
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typedef int (*of_iommu_init_fn)(struct device_node *);
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#define IOMMU_OF_DECLARE(name, compat, fn) \
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_OF_DECLARE(iommu, name, compat, fn, of_iommu_init_fn)
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#endif /* __OF_IOMMU_H */
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