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authorleo <leo@NetBSD.org>1995-03-26 07:12:03 +0000
committerleo <leo@NetBSD.org>1995-03-26 07:12:03 +0000
commit8b0113cfceadf3ee3bc427c4680b6b46bb57ceea (patch)
tree2a5b7db0400149a733175c4b1a56774b2d4c1eb7 /sys/arch/atari/dev/clockreg.h
parent282052c7a8346370f47965457329f3b0b3fa01b7 (diff)
NetBSD/Atari, port by Leo Weppelman.
Diffstat (limited to 'sys/arch/atari/dev/clockreg.h')
-rw-r--r--sys/arch/atari/dev/clockreg.h114
1 files changed, 114 insertions, 0 deletions
diff --git a/sys/arch/atari/dev/clockreg.h b/sys/arch/atari/dev/clockreg.h
new file mode 100644
index 00000000000..dc6fb1548a3
--- /dev/null
+++ b/sys/arch/atari/dev/clockreg.h
@@ -0,0 +1,114 @@
+/* $NetBSD: clockreg.h,v 1.1.1.1 1995/03/26 07:12:15 leo Exp $ */
+
+/*
+ * Copyright (c) 1995 Leo Weppelman.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Leo Weppelman.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _CLOCKREG_H
+#define _CLOCKREG_H
+/*
+ * Atari TT hardware:
+ * Motorola MC146818A RealTimeClock
+ */
+
+#define RTC ((struct rtc *)AD_RTC)
+
+struct rtc {
+ volatile u_char rtc_dat[4];
+};
+
+#define rtc_regno rtc_dat[1] /* register nr. select */
+#define rtc_data rtc_dat[3] /* data register */
+
+/*
+ * Register number definitions
+ */
+#define RTC_SEC 0
+#define RTC_ASEC 1
+#define RTC_MIN 2
+#define RTC_A_MIN 3
+#define RTC_HOUR 4
+#define RTC_A_HOUR 5
+#define RTC_WDAY 6
+#define RTC_DAY 7
+#define RTC_MONTH 8
+#define RTC_YEAR 9
+#define RTC_REGA 10
+#define RTC_REGB 11
+#define RTC_REGC 12
+#define RTC_REGD 13
+#define RTC_RAMBOT 14 /* Reg. offset of nv-RAM */
+#define RTC_RAMSIZ 50 /* #bytes of nv-RAM available */
+
+/*
+ * Define fields for register A
+ */
+#define RTC_A_UIP 0x80 /* Update In Progress */
+#define RTC_A_DV2 0x40 /* Divider select */
+#define RTC_A_DV1 0x20 /* Divider select */
+#define RTC_A_DV0 0x10 /* Divider select */
+#define RTC_A_RS3 0x08 /* Rate Select */
+#define RTC_A_RS2 0x04 /* Rate Select */
+#define RTC_A_RS1 0x02 /* Rate Select */
+#define RTC_A_RS0 0x01 /* Rate Select */
+
+/*
+ * Define fields for register B
+ */
+#define RTC_B_SET 0x80 /* SET date/time */
+#define RTC_B_PIE 0x40 /* Periodic Int. Enable */
+#define RTC_B_AIE 0x20 /* Alarm Int. Enable */
+#define RTC_B_UIE 0x10 /* Update Ended Int. Enable */
+#define RTC_B_SQWE 0x08 /* Square Wave Output Enable */
+#define RTC_B_DM 0x04 /* Binary Data mode */
+#define RTC_B_24_12 0x02 /* 24 Hour mode */
+#define RTC_B_DSE 0x01 /* DST Enable */
+
+/*
+ * Define fields for register C
+ */
+#define RTC_C_IRQF 0x80 /* IRQ flag */
+#define RTC_C_PF 0x40 /* Periodic Int. flag */
+#define RTC_C_AF 0x20 /* Alarm Int. flag */
+#define RTC_C_UF 0x10 /* Update Ended Int. flag */
+
+/*
+ * Define fields for register D
+ */
+#define RTC_D_VRT 0x80 /* Valid Ram and Time */
+
+/*
+ * Some useful constants/macros
+ */
+#define is_leap(x) (!(x % 4) && ((x % 100) || !(x % 1000)))
+#define range_test(n, l, h) ((n) < (l) || (n) > (h))
+#define SECS_DAY 86400L
+#define SECS_HOUR 3600L
+#define STARTOFTIME 1970
+#endif /* _CLOCKREG_H */