/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __OF_ADDRESS_H #define __OF_ADDRESS_H #include <linux/ioport.h> #include <linux/errno.h> #include <linux/of.h> #include <linux/io.h> struct of_bus; struct of_pci_range_parser { struct device_node *node; struct of_bus *bus; const __be32 *range; const __be32 *end; int na; int ns; int pna; bool dma; }; #define of_range_parser of_pci_range_parser struct of_pci_range { union { u64 pci_addr; u64 bus_addr; }; u64 cpu_addr; u64 size; u32 flags; }; #define of_range of_pci_range #define for_each_of_pci_range(parser, range) \ for (; of_pci_range_parser_one(parser, range);) #define for_each_of_range for_each_of_pci_range /* Translate a DMA address from device space to CPU space */ extern u64 of_translate_dma_address(struct device_node *dev, const __be32 *in_addr); #ifdef CONFIG_OF_ADDRESS extern u64 of_translate_address(struct device_node *np, const __be32 *addr); extern int of_address_to_resource(struct device_node *dev, int index, struct resource *r); extern void __iomem *of_iomap(struct device_node *device, int index); void __iomem *of_io_request_and_map(struct device_node *device, int index, const char *name); /* Extract an address from a device, returns the region size and * the address space flags too. The PCI version uses a BAR number * instead of an absolute index */ extern const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no, u64 *size, unsigned int *flags); extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, struct device_node *node); extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser, struct device_node *node); extern struct of_pci_range *of_pci_range_parser_one( struct of_pci_range_parser *parser, struct of_pci_range *range); extern int of_pci_address_to_resource(struct device_node *dev, int bar, struct resource *r); extern int of_pci_range_to_resource(struct of_pci_range *range, struct device_node *np, struct resource *res); extern bool of_dma_is_coherent(struct device_node *np); #else /* CONFIG_OF_ADDRESS */ static inline void __iomem *of_io_request_and_map(struct device_node *device, int index, const char *name) { return IOMEM_ERR_PTR(-EINVAL); } static inline u64 of_translate_address(struct device_node *np, const __be32 *addr) { return OF_BAD_ADDR; } static inline const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no, u64 *size, unsigned int *flags) { return NULL; } static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, struct device_node *node) { return -ENOSYS; } static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser, struct device_node *node) { return -ENOSYS; } static inline struct of_pci_range *of_pci_range_parser_one( struct of_pci_range_parser *parser, struct of_pci_range *range) { return NULL; } static inline int of_pci_address_to_resource(struct device_node *dev, int bar, struct resource *r) { return -ENOSYS; } static inline int of_pci_range_to_resource(struct of_pci_range *range, struct device_node *np, struct resource *res) { return -ENOSYS; } static inline bool of_dma_is_coherent(struct device_node *np) { return false; } #endif /* CONFIG_OF_ADDRESS */ #ifdef CONFIG_OF extern int of_address_to_resource(struct device_node *dev, int index, struct resource *r); void __iomem *of_iomap(struct device_node *node, int index); #else static inline int of_address_to_resource(struct device_node *dev, int index, struct resource *r) { return -EINVAL; } static inline void __iomem *of_iomap(struct device_node *device, int index) { return NULL; } #endif #define of_range_parser_init of_pci_range_parser_init static inline const __be32 *of_get_address(struct device_node *dev, int index, u64 *size, unsigned int *flags) { return __of_get_address(dev, index, -1, size, flags); } static inline const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size, unsigned int *flags) { return __of_get_address(dev, -1, bar_no, size, flags); } #endif /* __OF_ADDRESS_H */