IXP4XX_PCI_CFG_BASE_VIRT 64 arch/arm/mach-ixp4xx/common.c .virtual = (unsigned long)IXP4XX_PCI_CFG_BASE_VIRT, IXP4XX_PCI_CFG_BASE_VIRT 220 arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h #define IXP4XX_PCI_CSR(x) ((volatile u32 *)(IXP4XX_PCI_CFG_BASE_VIRT+(x)))