RMIXLR_SBC_PCIX_CFG_BAR
r = RMIXL_PCIXREG_READ(RMIXLR_SBC_PCIX_CFG_BAR);
bar = RMIXL_IOREG_READ(RMIXL_IO_DEV_BRIDGE + RMIXLR_SBC_PCIX_CFG_BAR);