FreeCalypso > hg > freecalypso-sw
diff loadagent/ns16550.h @ 1:da98dc08f575
loadagent: beginning to lay the foundation
| author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
|---|---|
| date | Mon, 29 Apr 2013 03:21:00 +0000 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/loadagent/ns16550.h Mon Apr 29 03:21:00 2013 +0000 @@ -0,0 +1,101 @@ +#ifndef __NS16550_H +#define __NS16550_H + +/* NS16550 registers */ +#define NS16550_RBR 0 +#define NS16550_THR 0 +#define NS16550_IER 1 +#define NS16550_IIR 2 +#define NS16550_FCR 2 +#define NS16550_LCR 3 +#define NS16550_MCR 4 +#define NS16550_LSR 5 +#define NS16550_MSR 6 +#define NS16550_SCR 7 +#define NS16550_DLL 0 +#define NS16550_DLM 1 + +#ifndef __ASSEMBLER__ +#include "types.h" + +struct ns16550_regs { + u8 datareg; + u8 ier; + u8 iir_fcr; + u8 lcr; + u8 mcr; + u8 lsr; + u8 msr; + u8 scr; +}; +#endif + +/* IER bits */ +#define NS16550_IER_EDSSI 0x08 +#define NS16550_IER_ELSI 0x04 +#define NS16550_IER_ETBEI 0x02 +#define NS16550_IER_ERBFI 0x01 + +/* IIR bits */ +#define NS16550_IIR_FIFOEN 0xC0 +#define NS16550_IIR_INTID 0x0E +#define NS16550_IIR_INT_RLS 0x06 +#define NS16550_IIR_INT_RDA 0x04 +#define NS16550_IIR_INT_CTO 0x0C +#define NS16550_IIR_INT_THRE 0x02 +#define NS16550_IIR_INT_MODEM 0x00 +#define NS16550_IIR_INTPEND 0x01 + +/* FCR bits */ + +#define NS16550_FCR_RXTR 0xC0 +#define NS16550_FCR_RXTR_1 0x00 +#define NS16550_FCR_RXTR_4 0x40 +#define NS16550_FCR_RXTR_8 0x80 +#define NS16550_FCR_RXTR_14 0xC0 +#define NS16550_FCR_DMAMODE 0x08 +#define NS16550_FCR_TXRST 0x04 +#define NS16550_FCR_RXRST 0x02 +#define NS16550_FCR_FIFOEN 0x01 + +/* LCR bits */ +#define NS16550_LCR_DLAB 0x80 +#define NS16550_LCR_BREAK 0x40 +#define NS16550_LCR_STICK 0x20 +#define NS16550_LCR_EPS 0x10 +#define NS16550_LCR_PEN 0x08 +#define NS16550_LCR_STB 0x04 +#define NS16550_LCR_WLS 0x03 +#define NS16550_LCR_WLS_5 0x00 +#define NS16550_LCR_WLS_6 0x01 +#define NS16550_LCR_WLS_7 0x02 +#define NS16550_LCR_WLS_8 0x03 + +/* MCR bits */ +#define NS16550_MCR_LOOP 0x10 +#define NS16550_MCR_OUT2 0x08 +#define NS16550_MCR_OUT1 0x04 +#define NS16550_MCR_RTS 0x02 +#define NS16550_MCR_DTR 0x01 + +/* LSR bits */ +#define NS16550_LSR_ERR 0x80 +#define NS16550_LSR_TEMP 0x40 +#define NS16550_LSR_THRE 0x20 +#define NS16550_LSR_BI 0x10 +#define NS16550_LSR_FE 0x08 +#define NS16550_LSR_PE 0x04 +#define NS16550_LSR_OE 0x02 +#define NS16550_LSR_DR 0x01 + +/* MSR bits */ +#define NS16550_MSR_DCD 0x80 +#define NS16550_MSR_RI 0x40 +#define NS16550_MSR_DSR 0x20 +#define NS16550_MSR_CTS 0x10 +#define NS16550_MSR_DDCD 0x08 +#define NS16550_MSR_TERI 0x04 +#define NS16550_MSR_DDSR 0x02 +#define NS16550_MSR_DCTS 0x01 + +#endif /* __NS16550_H */