diff options
Diffstat (limited to 'include/asm-ppc/prom.h')
| -rw-r--r-- | include/asm-ppc/prom.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/asm-ppc/prom.h b/include/asm-ppc/prom.h index 3e39827ed56..6d431d6fb02 100644 --- a/include/asm-ppc/prom.h +++ b/include/asm-ppc/prom.h @@ -136,5 +136,45 @@ extern unsigned long sub_reloc_offset(unsigned long); #define PTRRELOC(x) ((typeof(x))add_reloc_offset((unsigned long)(x))) #define PTRUNRELOC(x) ((typeof(x))sub_reloc_offset((unsigned long)(x))) + +/* + * OF address retreival & translation + */ + + +/* Translate an OF address block into a CPU physical address + */ +#define OF_BAD_ADDR ((u64)-1) +extern u64 of_translate_address(struct device_node *np, u32 *addr); + +/* 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 u32 *of_get_address(struct device_node *dev, int index, + u64 *size, unsigned int *flags); +extern u32 *of_get_pci_address(struct device_node *dev, int bar_no, + u64 *size, unsigned int *flags); + +/* Get an address as a resource. Note that if your address is + * a PIO address, the conversion will fail if the physical address + * can't be internally converted to an IO token with + * pci_address_to_pio(), that is because it's either called to early + * or it can't be matched to any host bridge IO space + */ +extern int of_address_to_resource(struct device_node *dev, int index, + struct resource *r); +extern int of_pci_address_to_resource(struct device_node *dev, int bar, + struct resource *r); + +#ifndef CONFIG_PPC_OF +/* + * Fallback definitions for builds where we don't have prom.c included. + */ +#define machine_is_compatible(x) 0 +#define of_find_compatible_node(f, t, c) NULL +#define get_property(p, n, l) NULL +#endif + #endif /* _PPC_PROM_H */ #endif /* __KERNEL__ */ |