SH4A_PCIEPCICONF1
if (pci_read_reg(chan, SH4A_PCIEPCICONF1) & ((1 << 29) | (1 << 28)))
data = pci_read_reg(chan, SH4A_PCIEPCICONF1);
pci_write_reg(chan, data, SH4A_PCIEPCICONF1);