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155 lines
4.2 KiB
155 lines
4.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __OF_ADDRESS_H |
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#define __OF_ADDRESS_H |
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#include <linux/ioport.h> |
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#include <linux/errno.h> |
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#include <linux/of.h> |
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#include <linux/io.h> |
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struct of_bus; |
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struct of_pci_range_parser { |
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struct device_node *node; |
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struct of_bus *bus; |
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const __be32 *range; |
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const __be32 *end; |
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int na; |
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int ns; |
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int pna; |
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bool dma; |
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}; |
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#define of_range_parser of_pci_range_parser |
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struct of_pci_range { |
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union { |
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u64 pci_addr; |
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u64 bus_addr; |
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}; |
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u64 cpu_addr; |
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u64 size; |
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u32 flags; |
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}; |
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#define of_range of_pci_range |
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#define for_each_of_pci_range(parser, range) \ |
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for (; of_pci_range_parser_one(parser, range);) |
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#define for_each_of_range for_each_of_pci_range |
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/* Translate a DMA address from device space to CPU space */ |
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extern u64 of_translate_dma_address(struct device_node *dev, |
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const __be32 *in_addr); |
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#ifdef CONFIG_OF_ADDRESS |
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extern u64 of_translate_address(struct device_node *np, const __be32 *addr); |
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extern int of_address_to_resource(struct device_node *dev, int index, |
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struct resource *r); |
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extern void __iomem *of_iomap(struct device_node *device, int index); |
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void __iomem *of_io_request_and_map(struct device_node *device, |
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int index, const char *name); |
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/* Extract an address from a device, returns the region size and |
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* the address space flags too. The PCI version uses a BAR number |
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* instead of an absolute index |
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*/ |
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extern const __be32 *of_get_address(struct device_node *dev, int index, |
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u64 *size, unsigned int *flags); |
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extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, |
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struct device_node *node); |
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extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser, |
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struct device_node *node); |
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extern struct of_pci_range *of_pci_range_parser_one( |
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struct of_pci_range_parser *parser, |
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struct of_pci_range *range); |
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extern bool of_dma_is_coherent(struct device_node *np); |
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#else /* CONFIG_OF_ADDRESS */ |
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static inline void __iomem *of_io_request_and_map(struct device_node *device, |
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int index, const char *name) |
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{ |
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return IOMEM_ERR_PTR(-EINVAL); |
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} |
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static inline u64 of_translate_address(struct device_node *np, |
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const __be32 *addr) |
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{ |
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return OF_BAD_ADDR; |
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} |
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static inline const __be32 *of_get_address(struct device_node *dev, int index, |
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u64 *size, unsigned int *flags) |
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{ |
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return NULL; |
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} |
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static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, |
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struct device_node *node) |
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{ |
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return -ENOSYS; |
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} |
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static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser, |
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struct device_node *node) |
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{ |
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return -ENOSYS; |
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} |
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static inline struct of_pci_range *of_pci_range_parser_one( |
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struct of_pci_range_parser *parser, |
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struct of_pci_range *range) |
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{ |
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return NULL; |
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} |
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static inline bool of_dma_is_coherent(struct device_node *np) |
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{ |
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return false; |
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} |
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#endif /* CONFIG_OF_ADDRESS */ |
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#ifdef CONFIG_OF |
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extern int of_address_to_resource(struct device_node *dev, int index, |
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struct resource *r); |
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void __iomem *of_iomap(struct device_node *node, int index); |
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#else |
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static inline int of_address_to_resource(struct device_node *dev, int index, |
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struct resource *r) |
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{ |
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return -EINVAL; |
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} |
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static inline void __iomem *of_iomap(struct device_node *device, int index) |
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{ |
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return NULL; |
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} |
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#endif |
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#define of_range_parser_init of_pci_range_parser_init |
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#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI) |
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extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, |
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u64 *size, unsigned int *flags); |
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extern int of_pci_address_to_resource(struct device_node *dev, int bar, |
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struct resource *r); |
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extern int of_pci_range_to_resource(struct of_pci_range *range, |
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struct device_node *np, |
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struct resource *res); |
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#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */ |
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static inline int of_pci_address_to_resource(struct device_node *dev, int bar, |
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struct resource *r) |
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{ |
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return -ENOSYS; |
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} |
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static inline const __be32 *of_get_pci_address(struct device_node *dev, |
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int bar_no, u64 *size, unsigned int *flags) |
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{ |
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return NULL; |
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} |
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static inline int of_pci_range_to_resource(struct of_pci_range *range, |
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struct device_node *np, |
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struct resource *res) |
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{ |
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return -ENOSYS; |
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} |
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#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */ |
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#endif /* __OF_ADDRESS_H */
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