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