dev/serial/uart8250.hh

47 const uint8_t IIR_NOPEND = 0x1;
50 const uint8_t IIR_MODEM = 0x00; /* Modem Status (lowest priority) */
51 const uint8_t IIR_TXID  = 0x02; /* Tx Data */
52 const uint8_t IIR_RXID  = 0x04; /* Rx Data */
53 const uint8_t IIR_LINE  = 0x06; /* Rx Line Status (highest priority)*/
55 const uint8_t UART_IER_RDI  = 0x01;
56 const uint8_t UART_IER_THRI = 0x02;
57 const uint8_t UART_IER_RLSI = 0x04;
60 const uint8_t UART_LSR_TEMT = 0x40;
61 const uint8_t UART_LSR_THRE = 0x20;
62 const uint8_t UART_LSR_DR   = 0x01;
64 const uint8_t UART_MCR_LOOP = 0x10;
73     uint8_t IER, DLAB, LCR, MCR;