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#ifdef __KERNEL__
#ifndef _ASM_PCI_BRIDGE_H
#define _ASM_PCI_BRIDGE_H
void pmac_find_bridges(void);
/*
* pci_io_base returns the memory address at which you can access
* the I/O space for PCI bus number `bus' (or NULL on error).
*
* NOTE: This doesn't handle the new Uni-N chip which requires
* per-device io_base.
*/
void *pci_io_base(unsigned int bus);
/* This version handles the new Uni-N host bridge, the iobase is now
* a per-device thing. I also added the memory base so PReP can
* be fixed to return 0xc0000000 (I didn't actually implement it)
*
* pci_dev_io_base() returns either a virtual (ioremap'ed) address or
* a physical address. In-kernel clients will use logical while the
* sys_pciconfig_iobase syscall returns a physical one to userland.
*/
void *pci_dev_io_base(unsigned char bus, unsigned char devfn, int physical);
void *pci_dev_mem_base(unsigned char bus, unsigned char devfn);
/* Returns the root-bridge number (Uni-N number) of a device */
int pci_dev_root_bridge(unsigned char bus, unsigned char devfn);
/*
* pci_device_loc returns the bus number and device/function number
* for a device on a PCI bus, given its device_node struct.
* It returns 0 if OK, -1 on error.
*/
int pci_device_loc(struct device_node *dev, unsigned char *bus_ptr,
unsigned char *devfn_ptr);
struct bridge_data {
volatile unsigned int *cfg_addr;
volatile unsigned char *cfg_data;
void *io_base; /* virtual */
unsigned long io_base_phys;
int bus_number;
int max_bus;
struct bridge_data *next;
struct device_node *node;
};
#endif
#endif /* __KERNEL__ */
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