| /* 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, |
| 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 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, |
| 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 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 |
| |
| #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI) |
| extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, |
| u64 *size, unsigned int *flags); |
| 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); |
| #else /* CONFIG_OF_ADDRESS && CONFIG_PCI */ |
| static inline int of_pci_address_to_resource(struct device_node *dev, int bar, |
| struct resource *r) |
| { |
| return -ENOSYS; |
| } |
| |
| static inline const __be32 *of_get_pci_address(struct device_node *dev, |
| int bar_no, u64 *size, unsigned int *flags) |
| { |
| return NULL; |
| } |
| static inline int of_pci_range_to_resource(struct of_pci_range *range, |
| struct device_node *np, |
| struct resource *res) |
| { |
| return -ENOSYS; |
| } |
| #endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */ |
| |
| #endif /* __OF_ADDRESS_H */ |