From 28a4b1dc17bdde8645d86661d5f969f374de3fd5 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 4 Aug 1997 21:39:07 +0000
Subject: moved from main include directory

---
 c/src/lib/include/motorola/mc68681.h | 87 ++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 c/src/lib/include/motorola/mc68681.h

(limited to 'c/src/lib/include/motorola/mc68681.h')

diff --git a/c/src/lib/include/motorola/mc68681.h b/c/src/lib/include/motorola/mc68681.h
new file mode 100644
index 0000000000..99e595d03c
--- /dev/null
+++ b/c/src/lib/include/motorola/mc68681.h
@@ -0,0 +1,87 @@
+/*
+ * mc68681-duart.h -- Low level support code for the Motorola mc68681
+ *                   DUART. This one is one the mc68ec0x0 board.
+ *		     Written by rob@cygnus.com (Rob Savoye)
+ *
+ *  $Id$
+ */
+
+#ifndef __MC68681_H__
+#define __MC68681_H__
+#define DUART_ADDR	0xb00003		/* base address of the DUART */
+
+/*
+ * mc68681 register offsets
+ */
+#define DUART_MR1A	0x00			/* Mode Register A */
+#define DUART_MR2A	0x00			/* Mode Register A */
+#define DUART_SRA	0x04			/* Status Register A */
+#define DUART_CSRA	0x04			/* Clock-Select Register A */
+#define DUART_CRA	0x08			/* Command Register A */
+#define DUART_RBA	0x0c			/* Receive Buffer A */
+#define DUART_TBA	0x0c			/* Transmit Buffer A */
+#define DUART_IPCR	0x10			/* Input Port Change Register */
+#define DUART_ACR	0x10    		/* Auxiliary Control Register */
+#define DUART_ISR	0x14			/* Interrupt Status Register */
+#define DUART_IMR	0x14			/* Interrupt Mask Register */
+#define DUART_CUR	0x18			/* Counter Mode: current MSB */
+#define DUART_CTUR	0x18			/* Counter/Timer upper reg */
+#define DUART_CLR	0x1c			/* Counter Mode: current LSB */
+#define DUART_CTLR	0x1c			/* Counter/Timer lower reg */
+#define DUART_MR1B	0x20			/* Mode Register B */
+#define DUART_MR2B	0x20    		/* Mode Register B */
+#define DUART_SRB	0x24			/* Status Register B */
+#define DUART_CSRB	0x24			/* Clock-Select Register B */
+#define DUART_CRB	0x28			/* Command Register B */
+#define DUART_RBB	0x2c			/* Receive Buffer B */
+#define DUART_TBB	0x2c			/* Transmit Buffer A */
+#define DUART_IVR	0x30			/* Interrupt Vector Register */
+#define DUART_IP	0x34			/* Input Port */
+#define DUART_OPCR	0x34			/* Output Port Configuration Reg. */
+#define DUART_STRTCC	0x38			/* Start-Counter command */
+#define DUART_OPRSET	0x38			/* Output Port Reg, SET bits */
+#define DUART_STOPCC	0x3c			/* Stop-Counter command */
+#define DUART_OPRRST	0x3c			/* Output Port Reg, ReSeT bits */
+
+/* this is just if you want a copy of the chip's registers */
+struct duart_regs {
+  unsigned char mr1a_reg;			/* Mode Register A */
+  unsigned char mr2a_reg;			/* Mode Register A */
+  unsigned char sra_reg;			/* Status Register A */
+  unsigned char csra_reg;			/* Clock-Select Register A */
+  unsigned char cra_reg;			/* Command Register A */
+  unsigned char ipcr_reg;			/* Input Port Change Register */
+  unsigned char acr_reg;			/* Auxiliary Control Register */
+  unsigned char isr_reg;			/* Interrupt Status Register */
+  unsigned char imr_reg;			/* Interrupt Mask Register */
+  unsigned char cur_reg;			/* Counter Mode: current MSB */
+  unsigned char ctur_reg;			/* Counter/Timer upper reg */
+  unsigned char clr_reg;			/* Counter Mode: current LSB */
+  unsigned char ctlr_reg;			/* Counter/Timer lower reg */
+  unsigned char mr1b_reg;			/* Mode Register B */
+  unsigned char mr2b_reg;			/* Mode Register B */
+  unsigned char srb_reg;			/* Status Register B */
+  unsigned char csrb_reg;			/* Clock-Select Register B */
+  unsigned char crb_reg;			/* Command Register B */
+  unsigned char ivr_reg;			/* Interrupt Vector Register */
+  unsigned char ip_reg;				/* Input Port */
+  unsigned char opcr_reg;			/* Output Port Configuration Reg. */
+  unsigned char oprset_reg;			/* Output Port Reg; bit SET */
+  unsigned char strtcc_reg;			/* Start-Counter command */
+  unsigned char oprrst_reg;			/* Output Port Reg; bit ReSeT */
+  unsigned char stopcc_reg;			/* Stop-Counter command */
+  unsigned char pad;
+};
+
+/* Some RTEMS style defines: */
+#ifndef VOL8
+#define VOL8( ptr )   ((volatile rtems_unsigned8 *)(ptr))
+#endif
+
+#define MC68681_WRITE( reg, data ) \
+   *(VOL8(DUART_ADDR+reg)) = (data)
+
+#define MC68681_READ( reg, data ) \
+   (data) = *(VOL8(DUART_ADDR+reg))
+
+#endif
-- 
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