1 /* Line Status Register bits */
2 #define LSR_DR 0x01 /* Data ready */
3 #define LSR_OE 0x02 /* Overrun */
4 #define LSR_PE 0x04 /* Parity error */
5 #define LSR_FE 0x08 /* Framing error */
6 #define LSR_BI 0x10 /* Break */
7 #define LSR_THRE 0x20 /* Xmit holding register empty */
8 #define LSR_TEMT 0x40 /* Xmitter empty */
9 #define LSR_ERR 0x80 /* Error */
11 #define CLKRATE 3686400 /* cogent motherboard serial clk = 3.6864MHz */
12 #define DEFDIV 1 /* default to 230400 bps */
14 #define br_to_div(br) (CLKRATE / (16 * (br)))
15 #define div_to_br(div) (CLKRATE / (16 * (div)))