diff target-utils/include/ns16550.h @ 11:40f607bb0a2c

target-utils refactored
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Wed, 01 May 2013 07:39:35 +0000
parents loadagent/ns16550.h@da98dc08f575
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/include/ns16550.h	Wed May 01 07:39:35 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 */