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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203/* 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; const 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 parent_bus_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
/* * 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_ADDRESSextern 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);
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);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(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, 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_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){ 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 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;}#endif /* CONFIG_OF_ADDRESS */
#ifdef CONFIG_OFextern int of_address_to_resource(struct device_node *dev, int index, struct resource *r);void __iomem *of_iomap(struct device_node *node, int index);#elsestatic 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);}
static inline int of_address_count(struct device_node *np){ struct resource res; int count = 0;
while (of_address_to_resource(np, count, &res) == 0) count++;
return count;}
#endif /* __OF_ADDRESS_H */