diff options
Diffstat (limited to 'include/linux/of_address.h')
| -rw-r--r-- | include/linux/of_address.h | 97 |
1 files changed, 72 insertions, 25 deletions
diff --git a/include/linux/of_address.h b/include/linux/of_address.h index 88bc943405cd..0cff90365391 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -10,7 +10,7 @@ struct of_bus; struct of_pci_range_parser { struct device_node *node; - struct of_bus *bus; + const struct of_bus *bus; const __be32 *range; const __be32 *end; int na; @@ -26,6 +26,7 @@ struct of_pci_range { u64 bus_addr; }; u64 cpu_addr; + u64 parent_bus_addr; u64 size; u32 flags; }; @@ -35,9 +36,27 @@ struct of_pci_range { for (; of_pci_range_parser_one(parser, range);) #define for_each_of_range for_each_of_pci_range +/* + * of_range_count - Get the number of "ranges" or "dma-ranges" entries + * @parser: Parser state initialized by of_range_parser_init() + * + * Returns the number of entries or 0 if none. + * + * Note that calling this within or after the for_each_of_range() iterator will + * be inaccurate giving the number of entries remaining. + */ +static inline int of_range_count(const struct of_range_parser *parser) +{ + if (!parser || !parser->node || !parser->range || parser->range == parser->end) + return 0; + return (parser->end - parser->range) / (parser->na + parser->pna + parser->ns); +} + /* Translate a DMA address from device space to CPU space */ extern u64 of_translate_dma_address(struct device_node *dev, const __be32 *in_addr); +extern const __be32 *of_translate_dma_region(struct device_node *dev, const __be32 *addr, + phys_addr_t *start, size_t *length); #ifdef CONFIG_OF_ADDRESS extern u64 of_translate_address(struct device_node *np, const __be32 *addr); @@ -51,8 +70,10 @@ void __iomem *of_io_request_and_map(struct device_node *device, * 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 const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no, + u64 *size, unsigned int *flags); + +int of_property_read_reg(struct device_node *np, int idx, u64 *addr, u64 *size); extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, struct device_node *node); @@ -61,6 +82,13 @@ extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser, 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(const struct of_pci_range *range, + const struct device_node *np, + struct resource *res); +extern int of_range_to_resource(struct device_node *np, int index, + 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, @@ -75,12 +103,17 @@ static inline u64 of_translate_address(struct device_node *np, return OF_BAD_ADDR; } -static inline const __be32 *of_get_address(struct device_node *dev, int index, - u64 *size, unsigned int *flags) +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_property_read_reg(struct device_node *np, int idx, u64 *addr, u64 *size) +{ + return -ENOSYS; +} + static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, struct device_node *node) { @@ -100,6 +133,25 @@ static inline struct of_pci_range *of_pci_range_parser_one( 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 int of_range_to_resource(struct device_node *np, int index, + struct resource *res) +{ + return -ENOSYS; +} + static inline bool of_dma_is_coherent(struct device_node *np) { return false; @@ -124,32 +176,27 @@ static inline void __iomem *of_iomap(struct device_node *device, int index) #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) +static inline const __be32 *of_get_address(struct device_node *dev, int index, + u64 *size, unsigned int *flags) { - return -ENOSYS; + 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) +static inline const __be32 *of_get_pci_address(struct device_node *dev, int bar_no, + u64 *size, unsigned int *flags) { - return NULL; + return __of_get_address(dev, -1, bar_no, size, flags); } -static inline int of_pci_range_to_resource(struct of_pci_range *range, - struct device_node *np, - struct resource *res) + +static inline int of_address_count(struct device_node *np) { - return -ENOSYS; + struct resource res; + int count = 0; + + while (of_address_to_resource(np, count, &res) == 0) + count++; + + return count; } -#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */ #endif /* __OF_ADDRESS_H */ |