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      1 /* originally from linux source (asm-ppc/io.h).
      2  * Sanity added by Rob Taylor, Flying Pig Systems, 2000
      3  */
      4 #ifndef _PCI_IO_H_
      5 #define _PCI_IO_H_
      6 
      7 #include "io.h"
      8 
      9 
     10 #define pci_read_le16(addr, dest) \
     11     __asm__ __volatile__("lhbrx %0,0,%1" : "=r" (dest) : \
     12 		  "r" (addr), "m" (*addr));
     13 
     14 #define pci_write_le16(addr, val) \
     15     __asm__ __volatile__("sthbrx %1,0,%2" : "=m" (*addr) : \
     16 		  "r" (val), "r" (addr));
     17 
     18 
     19 #define pci_read_le32(addr, dest) \
     20     __asm__ __volatile__("lwbrx %0,0,%1" : "=r" (dest) : \
     21 		 "r" (addr), "m" (*addr));
     22 
     23 #define pci_write_le32(addr, val) \
     24 __asm__ __volatile__("stwbrx %1,0,%2" : "=m" (*addr) : \
     25 		 "r" (val), "r" (addr));
     26 
     27 #define pci_readb(addr,b) ((b) = *(volatile u8 *) (addr))
     28 #define pci_writeb(b,addr) ((*(volatile u8 *) (addr)) = (b))
     29 
     30 #if !defined(__BIG_ENDIAN)
     31 #define pci_readw(addr,b) ((b) = *(volatile u16 *) (addr))
     32 #define pci_readl(addr,b) ((b) = *(volatile u32 *) (addr))
     33 #define pci_writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
     34 #define pci_writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
     35 #else
     36 #define pci_readw(addr,b) pci_read_le16((volatile u16 *)(addr),(b))
     37 #define pci_readl(addr,b) pci_read_le32((volatile u32 *)(addr),(b))
     38 #define pci_writew(b,addr) pci_write_le16((volatile u16 *)(addr),(b))
     39 #define pci_writel(b,addr) pci_write_le32((volatile u32 *)(addr),(b))
     40 #endif
     41 
     42 
     43 #endif /* _PCI_IO_H_ */
     44