XSEM_REG_PASSIVE_BUFFER
kuku= REG_RD(pdev, XSEM_REG_PASSIVE_BUFFER);
kuku = REG_RD(pdev, XSEM_REG_PASSIVE_BUFFER + 4);
kuku = REG_RD(pdev, XSEM_REG_PASSIVE_BUFFER + 8);