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[PATCH] powerpc: Update OF address parsers

Browse source 
This updates the OF address parsers to return the IO flags
indicating the type of address obtained. It also adds a PCI
call for converting physical addresses that hit IO space into
into IO tokens, and add routines that return the translated
addresses into struct resource

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2005-11-30 16:57:28 +11:00 • committed by Paul Mackerras
commit d2dd482bc1
10 changed files with 251 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

9
include/asm-powerpc/pci-bridge.h
View file

@ -156,6 +156,15 @@ extern struct pci_controller *
pcibios_alloc_controller(struct device_node *dev);
extern void pcibios_free_controller(struct pci_controller *phb);
#ifdef CONFIG_PCI
extern unsigned int pci_address_to_pio(phys_addr_t address);
#else
static inline unsigned int pci_address_to_pio(phys_addr_t address)
{
return (unsigned int)-1;
}
#endif
/* Return values for ppc_md.pci_probe_mode function */
#define PCI_PROBE_NONE -1 /* Don't look at this bus at all */
#define PCI_PROBE_NORMAL 0 /* Do normal PCI probing */

28
include/asm-powerpc/prom.h
View file

@ -223,14 +223,36 @@ extern struct resource *request_OF_resource(struct device_node* node,
int index, const char* name_postfix);
extern int release_OF_resource(struct device_node* node, int index);
/*
* Address translation function(s)
* 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);
extern u32 *of_get_address(struct device_node *dev, int index, u64 *size);
extern u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size);
/* 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);
#endif /* __KERNEL__ */
#endif /* _POWERPC_PROM_H */

9
include/asm-ppc/pci-bridge.h
View file

@ -137,5 +137,14 @@ static inline unsigned char bridge_swizzle(unsigned char pin,
*/
extern int pciauto_bus_scan(struct pci_controller *, int);
#ifdef CONFIG_PCI
extern unsigned int pci_address_to_pio(phys_addr_t address);
#else
static inline unsigned int pci_address_to_pio(phys_addr_t address)
{
return (unsigned int)-1;
}
#endif
#endif
#endif /* __KERNEL__ */

28
include/asm-ppc/prom.h
View file

@ -138,12 +138,34 @@ extern unsigned long sub_reloc_offset(unsigned long);
/*
* Address translation function(s)
* 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);
extern u32 *of_get_address(struct device_node *dev, int index, u64 *size);
extern u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size);
/* 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);
#endif /* _PPC_PROM_H */