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/* $NetBSD: ds1386reg.h,v 1.1 1995/05/04 19:31:18 cgd Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Definitions for the Dallas Semiconductor DS1386 Real Time Clock.
*
*/
/*
* The registers, and the bits within each register.
*/
#define DS_SEC_100 0x0 /* Time of year: hundreds seconds (0-99) */
#define DS_SEC 0x1 /* Time of year: seconds (0-59) */
#define DS_MIN 0x2 /* Time of year: minutes (0-59) */
#define DS_HOUR 0x4 /* Time of year: hour (see above) */
#define DS_DOW 0x6 /* Time of year: day of week (1-7) */
#define DS_DOM 0x8 /* Time of year: day of month (1-31) */
#define DS_MONTH 0x9 /* Time of year: month (1-12) */
#define DS_YEAR 0xa /* Time of year: year in century (0-99) */
#define DS_AMIN 0x3 /* Alarm: minutes */
#define DS_AHOUR 0x5 /* Alarm: hour */
#define DS_ADOW 0x7 /* Alarm: day */
#define DS_HOUR_12 0x40 /* 12-hour mode. In DS_HOUR reg */
#define DS_EOSC 0x80 /* Enable TOD osc if 0. In DS_MONTH reg. */
#define DS_REGC 0xb /* Control register */
#define DS_REGC_TE 0x80 /* Transfer enable bit. 0 freezes regs */
#define DS_REGC_IPSW 0x40 /* Interrupt routing bit */
#define DS_REGC_WAM 0x08 /* Watchdog alarm int enab. 1 enables */
#define DS_REGC_TDM 0x04 /* Time Of Day alarm int enab. 1 enables */
#define DS_REGC_WAF 0x02 /* Watchdog alarm int status */
#define DS_REGC_TDF 0x01 /* Time Of Day alarm int status */
#define DS_NTODREGS 0xb /* 10 of those regs are for TOD and alarm */
#define DS_NVRAM_START 0xe /* start of NVRAM: offset 14 */
#define DS_NVRAM_SIZE (0x8000-0xe) /* 32k of NVRAM */
/*
* Special NVRAM locations.
*/
#define DS_ETHERADR 0x115 /* Ethernet address */
/*
* RTC register/NVRAM read and write functions -- machine-dependent.
* Appropriately manipulate RTC registers to get/put data values.
*/
u_int ds1386_read __P((void *sc, u_int reg));
void ds1386_write __P((void *sc, u_int reg, u_int datum));
/*
* A collection of TOD/Alarm registers.
*/
typedef u_int ds_todregs[DS_NTODREGS];
/*
* Get all of the TOD/Alarm registers
* Must be called at splhigh(), and with the RTC properly set up.
*/
#define DS1386_GETTOD(sc, regs) \
do { \
int i; \
\
/* wait for update; spin loop */ \
i = ds1386_read(sc, DS_SEC_100); \
while (ds1386_read(sc, DS_SEC_100) == i) \
; \
\
/* read all of the tod/alarm regs */ \
for (i = 0; i < DS_NTODREGS; i++) \
(*regs)[i] = ds1386_read(sc, i); \
} while (0);
/*
* Set all of the TOD/Alarm registers
* Must be called at splhigh(), and with the RTC properly set up.
*/
#define DS1386_PUTTOD(sc, regs) \
do { \
int i; \
\
/* stop updates while setting */ \
ds1386_write(sc, DS_MONTH, DS_EOSC); \
\
/* write all of the tod/alarm regs */ \
for (i = 0; i < DS_NTODREGS; i++) \
ds1386_write(sc, i, (*regs)[i]); \
\
} while (0);
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