#ifndef _PPC_IO_H
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#ifndef _PPC_IO_H
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#define _PPC_IO_H
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#define _PPC_IO_H
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/* Define the particulars of outb/outw/outl "instructions" */
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/* Define the particulars of outb/outw/outl "instructions" */
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#define SLOW_DOWN_IO
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#define SLOW_DOWN_IO
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#ifndef PCI_DRAM_OFFSET
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#ifndef PCI_DRAM_OFFSET
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#define PCI_DRAM_OFFSET 0x80000000
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#define PCI_DRAM_OFFSET 0x80000000
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#endif
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#endif
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#ifndef KERNELBASE
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#ifndef KERNELBASE
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#define KERNELBASE 0x90000000
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#define KERNELBASE 0x90000000
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#endif
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#endif
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/*
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/*
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* The PCI bus is inherently Little-Endian. The PowerPC is being
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* The PCI bus is inherently Little-Endian. The PowerPC is being
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* run Big-Endian. Thus all values which cross the [PCI] barrier
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* run Big-Endian. Thus all values which cross the [PCI] barrier
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* must be endian-adjusted. Also, the local DRAM has a different
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* must be endian-adjusted. Also, the local DRAM has a different
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* address from the PCI point of view, thus buffer addresses also
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* address from the PCI point of view, thus buffer addresses also
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* have to be modified [mapped] appropriately.
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* have to be modified [mapped] appropriately.
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*/
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*/
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extern inline unsigned long virt_to_bus(volatile void * address)
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extern inline unsigned long virt_to_bus(volatile void * address)
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{
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{
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if (address == (void *)0) return 0;
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if (address == (void *)0) return 0;
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return ((unsigned long)((long)address - KERNELBASE + PCI_DRAM_OFFSET));
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return ((unsigned long)((long)address - KERNELBASE + PCI_DRAM_OFFSET));
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}
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}
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extern inline void * bus_to_virt(unsigned long address)
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extern inline void * bus_to_virt(unsigned long address)
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{
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{
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if (address == 0) return 0;
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if (address == 0) return 0;
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return ((void *)(address - PCI_DRAM_OFFSET + KERNELBASE));
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return ((void *)(address - PCI_DRAM_OFFSET + KERNELBASE));
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}
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}
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/* #define virt_to_bus(a) ((unsigned long)(((char *)a==(char *) 0) ? ((char *)0) \
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/* #define virt_to_bus(a) ((unsigned long)(((char *)a==(char *) 0) ? ((char *)0) \
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: ((char *)((long)a - KERNELBASE + PCI_DRAM_OFFSET))))
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: ((char *)((long)a - KERNELBASE + PCI_DRAM_OFFSET))))
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#define bus_to_virt(a) ((void *) (((char *)a==(char *)0) ? ((char *)0) \
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#define bus_to_virt(a) ((void *) (((char *)a==(char *)0) ? ((char *)0) \
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: ((char *)((long)a - PCI_DRAM_OFFSET + KERNELBASE))))
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: ((char *)((long)a - PCI_DRAM_OFFSET + KERNELBASE))))
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*/
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*/
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#define readb(addr) (*(volatile unsigned char *) (addr))
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#define readb(addr) (*(volatile unsigned char *) (addr))
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#define readw(addr) (*(volatile unsigned short *) (addr))
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#define readw(addr) (*(volatile unsigned short *) (addr))
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#define readl(addr) (*(volatile unsigned int *) (addr))
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#define readl(addr) (*(volatile unsigned int *) (addr))
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#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
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#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
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#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
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#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
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#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
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#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
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/*
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/*
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* Change virtual addresses to physical addresses and vv.
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* Change virtual addresses to physical addresses and vv.
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* These are trivial on the 1:1 Linux/i386 mapping (but if we ever
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* These are trivial on the 1:1 Linux/i386 mapping (but if we ever
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* make the kernel segment mapped at 0, we need to do translation
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* make the kernel segment mapped at 0, we need to do translation
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* on the i386 as well)
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* on the i386 as well)
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*/
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*/
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extern inline unsigned long virt_to_phys(volatile void * address)
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extern inline unsigned long virt_to_phys(volatile void * address)
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{
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{
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return (unsigned long) address;
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return (unsigned long) address;
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}
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}
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extern inline void * phys_to_virt(unsigned long address)
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extern inline void * phys_to_virt(unsigned long address)
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{
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{
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return (void *) address;
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return (void *) address;
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}
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}
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/* from arch/ppc/kernel/port_io.c
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/* from arch/ppc/kernel/port_io.c
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* -- Cort
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* -- Cort
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*/
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*/
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unsigned char inb(int port);
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unsigned char inb(int port);
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unsigned short inw(int port);
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unsigned short inw(int port);
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unsigned long inl(int port);
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unsigned long inl(int port);
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unsigned char outb(unsigned char val,int port);
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unsigned char outb(unsigned char val,int port);
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unsigned short outw(unsigned short val,int port);
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unsigned short outw(unsigned short val,int port);
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unsigned long outl(unsigned long val,int port);
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unsigned long outl(unsigned long val,int port);
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void outsl(int port, long *ptr, int len);
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void outsl(int port, long *ptr, int len);
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static inline unsigned char inb_p(int port) {return (inb(port)); }
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static inline unsigned char inb_p(int port) {return (inb(port)); }
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static inline unsigned short inw_p(int port) {return (inw(port)); }
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static inline unsigned short inw_p(int port) {return (inw(port)); }
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static inline unsigned long inl_p(int port) {return (inl(port)); }
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static inline unsigned long inl_p(int port) {return (inl(port)); }
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static inline unsigned char outb_p(unsigned char val,int port) { return (outb(val,port)); }
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static inline unsigned char outb_p(unsigned char val,int port) { return (outb(val,port)); }
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static inline unsigned short outw_p(unsigned short val,int port) { return (outw(val,port)); }
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static inline unsigned short outw_p(unsigned short val,int port) { return (outw(val,port)); }
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static inline unsigned long outl_p(unsigned long val,int port) { return (outl(val,port)); }
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static inline unsigned long outl_p(unsigned long val,int port) { return (outl(val,port)); }
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#endif
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#endif
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