CS_IO_BASE
#define CS_READ_1(off) REGREAD_1(CS_IO_BASE, (off))
#define CS_READ_2(off) REGREAD_2(CS_IO_BASE, (off))
#define CS_WRITE_1(off, val) REGWRITE_1(CS_IO_BASE, (off), (val))
#define CS_WRITE_2(off, val) REGWRITE_2(CS_IO_BASE, (off), (val))
(REGWRITE_2(CS_IO_BASE, PORT_PKTPG_PTR, (off)), \
REGREAD_2(CS_IO_BASE, PORT_PKTPG_DATA))
(REGWRITE_2(CS_IO_BASE, PORT_PKTPG_PTR, (off)), \
REGWRITE_2(CS_IO_BASE, PORT_PKTPG_DATA, (val)))