of_address.h
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#ifndef __OF_ADDRESS_H
#define __OF_ADDRESS_H
#include <linux/ioport.h>
#include <linux/errno.h>
#include <linux/of.h>
struct of_pci_range_parser {
struct device_node *node;
const __be32 *range;
const __be32 *end;
int np;
int pna;
};
struct of_pci_range {
u32 pci_space;
u64 pci_addr;
u64 cpu_addr;
u64 size;
u32 flags;
};
#define for_each_of_pci_range(parser, range) \
for (; of_pci_range_parser_one(parser, range);)
static inline void of_pci_range_to_resource(struct of_pci_range *range,
struct device_node *np,
struct resource *res)
{
res->flags = range->flags;
res->start = range->cpu_addr;
res->end = range->cpu_addr + range->size - 1;
res->parent = res->child = res->sibling = NULL;
res->name = np->full_name;
}
/* 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 bool of_can_translate_address(struct device_node *dev);
extern int of_address_to_resource(struct device_node *dev, int index,
struct resource *r);
extern struct device_node *of_find_matching_node_by_address(
struct device_node *from,
const struct of_device_id *matches,
u64 base_address);
extern void __iomem *of_iomap(struct device_node *device, int index);
/* 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 unsigned long pci_address_to_pio(phys_addr_t addr);
extern int of_pci_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);
#else /* CONFIG_OF_ADDRESS */
static inline struct device_node *of_find_matching_node_by_address(
struct device_node *from,
const struct of_device_id *matches,
u64 base_address)
{
return NULL;
}
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 -1;
}
static inline struct of_pci_range *of_pci_range_parser_one(
struct of_pci_range_parser *parser,
struct of_pci_range *range)
{
return NULL;
}
#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
#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);
#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;
}
#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
#endif /* __OF_ADDRESS_H */