u-boot/include/asm-ppc/pci_io.h
wdenk 8bde7f776c * Code cleanup:
- remove trailing white space, trailing empty lines, C++ comments, etc.
  - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)

* Patches by Kenneth Johansson, 25 Jun 2003:
  - major rework of command structure
    (work done mostly by Michal Cendrowski and Joakim Kristiansen)
2003-06-27 21:31:46 +00:00

43 lines
1.3 KiB
C

/* originally from linux source (asm-ppc/io.h).
* Sanity added by Rob Taylor, Flying Pig Systems, 2000
*/
#ifndef _PCI_IO_H_
#define _PCI_IO_H_
#include "io.h"
#define pci_read_le16(addr, dest) \
__asm__ __volatile__("lhbrx %0,0,%1" : "=r" (dest) : \
"r" (addr), "m" (*addr));
#define pci_write_le16(addr, val) \
__asm__ __volatile__("sthbrx %1,0,%2" : "=m" (*addr) : \
"r" (val), "r" (addr));
#define pci_read_le32(addr, dest) \
__asm__ __volatile__("lwbrx %0,0,%1" : "=r" (dest) : \
"r" (addr), "m" (*addr));
#define pci_write_le32(addr, val) \
__asm__ __volatile__("stwbrx %1,0,%2" : "=m" (*addr) : \
"r" (val), "r" (addr));
#define pci_readb(addr,b) ((b) = *(volatile u8 *) (addr))
#define pci_writeb(b,addr) ((*(volatile u8 *) (addr)) = (b))
#if !defined(__BIG_ENDIAN)
#define pci_readw(addr,b) ((b) = *(volatile u16 *) (addr))
#define pci_readl(addr,b) ((b) = *(volatile u32 *) (addr))
#define pci_writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
#define pci_writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
#else
#define pci_readw(addr,b) pci_read_le16((volatile u16 *)(addr),(b))
#define pci_readl(addr,b) pci_read_le32((volatile u32 *)(addr),(b))
#define pci_writew(b,addr) pci_write_le16((volatile u16 *)(addr),(b))
#define pci_writel(b,addr) pci_write_le32((volatile u32 *)(addr),(b))
#endif
#endif /* _PCI_IO_H_ */