PCIX_CMD_BYTECNT_MASK
reg &= ~PCIX_CMD_BYTECNT_MASK;
| PCIX_CMD_BYTECNT_MASK);
bytecnt = (pcix_cmd & PCIX_CMD_BYTECNT_MASK) >>
~PCIX_CMD_BYTECNT_MASK) |
(512 << (((reg) & PCIX_CMD_BYTECNT_MASK) >> PCIX_CMD_BYTECNT_SHIFT))