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/* $OpenBSD: dp857xreg.h,v 1.2 2002/03/14 01:26:54 millert Exp $ */
/*
* Copyright (c) 1996 Per Fogelstrom
*
* 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 under OpenBSD by
* Per Fogelstrom.
* 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.
*
*/
#if !defined(_DP857X_H)
#define _DP857X_H
/*
* Definition of Real Time Clock address space.
*
* Clock is a National DP8570A RTC
*/
#define BSIZE 1 /* No of Bytes for Address Spacing */
#define MAIN_STATUS 0x00 /* Main status register */
/*
* Registers selected with BS=0 RS=0
*/
#define TIMER0_CTRL 0x01 /* Timer 0 control register */
#define TIMER1_CTRL 0x02 /* Timer 0 control register */
#define PERIODIC_FLAGS 0x03 /* Timer periodic flag register */
#define INTERRUPT_ROUT 0x04 /* Interrupt routing register */
/*
* Registers selected with BS=0 RS=1
*/
#define REAL_TIME_MODE 0x01 /* Real Time Mode register */
#define OUTPUT_MODE 0x02 /* Output mode register */
#define INTERRUPT_CTRL0 0x03 /* Interrupt control register 0 */
#define INTERRUPT_CTRL1 0x04 /* Interrupt control register 1 */
/*
* Clock and timer registers when BS=0
*/
#define CLK_SUBSECONDS 0x05 /* 1/100 seconds reister */
#define CLK_SECONDS 0x06 /* Seconds */
#define CLK_MINUTES 0x07 /* Minutes */
#define CLK_HOURS 0x08 /* Hours */
#define CLK_DAY 0x09 /* Day of month */
#define CLK_MONTH 0x0a /* Month */
#define CLK_YEAR 0x0b /* Year */
#define CLK_JULIAN_L 0x0c /* Lsb of Julian date */
#define CLK_JULIAN_H 0x0d /* Msb of Julian date */
#define CLK_WEEKDAY 0x0e /* Day of week */
#define TIMER0_LSB 0x0f /* Timer 0 lsb */
#define TIMER0_MSB 0x10 /* Timer 0 msb */
#define TIMER1_LSB 0x11 /* Timer 1 lsb */
#define TIMER1_MSB 0x12 /* Timer 1 msb */
#define CMP_SECONDS 0x13 /* Seconds compare */
#define CMP_MINUTES 0x14 /* Minutes compare */
#define CMP_HOUR 0x15 /* Hours compare */
#define CMP_DAY 0x16 /* Day of month compare */
#define CMP_MONTH 0x17 /* Month compare */
#define CMP_WEEKDAY 0x18 /* Day of week compare */
#define SAVE_SECONDS 0x19 /* Seconds time save */
#define SAVE_MINUTES 0x1a /* Minutes time save */
#define SAVE_HOUR 0x1b /* Hours time save */
#define SAVE_DAY 0x1c /* Day of month time save */
#define SAVE_MONTH 0x1d /* Month time save */
#define RAM_1E 0x1e /* Ram location 1e */
#define RAM_1F 0x1f /* Ram location 1f */
#define SIZE_DP857X 0x20 /* Size of dp address map */
#define DP_FIRSTTODREG CLK_SUBSECONDS
#define DP_LASTTODREG CLK_WEEKDAY
typedef u_int dp_todregs[SIZE_DP857X];
u_int dp857x_read(void *sc, u_int reg);
void dp857x_write(void *sc, u_int reg, u_int datum);
/*
* Get all of the TOD/Alarm registers
* Must be called at splhigh(), and with the RTC properly set up.
*/
#define DP857X_GETTOD(sc, regs) \
do { \
int i; \
\
/* make sure clock regs are selected */ \
dp857x_write(sc, MAIN_STATUS, 0); \
/* try read until no rollover */ \
do { \
/* read all of the tod/alarm regs */ \
for (i = DP_FIRSTTODREG; i < SIZE_DP857X; i++) \
(*regs)[i] = dp857x_read(sc, i); \
} while(dp857x_read(sc, PERIODIC_FLAGS) & 7); \
} while (0);
/*
* Set all of the TOD/Alarm registers
* Must be called at splhigh(), and with the RTC properly set up.
*/
#define DP857X_PUTTOD(sc, regs) \
do { \
int i; \
\
/* stop updates while setting, eg clear start bit */ \
dp857x_write(sc, MAIN_STATUS, 0x40); \
dp857x_write(sc, REAL_TIME_MODE, \
dp857x_read(sc, REAL_TIME_MODE) & 0xF7); \
\
/* write all of the tod/alarm regs */ \
for (i = DP_FIRSTTODREG; i <= DP_LASTTODREG; i++) \
dp857x_write(sc, i, (*regs)[i]); \
\
/* reenable updates, eg set clock start bit */ \
dp857x_write(sc, REAL_TIME_MODE, \
dp857x_read(sc, REAL_TIME_MODE) | 0x08); \
} while (0);
#endif /*_DP857X_H*/
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