Annotation of sys/dev/ic/dp857xreg.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: dp857xreg.h,v 1.3 2003/06/09 16:34:22 deraadt Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1996 Per Fogelstrom
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: * 2. Redistributions in binary form must reproduce the above copyright
! 12: * notice, this list of conditions and the following disclaimer in the
! 13: * documentation and/or other materials provided with the distribution.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
! 16: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 18: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
! 19: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 20: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 21: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 23: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 24: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 25: * SUCH DAMAGE.
! 26: *
! 27: */
! 28:
! 29: #if !defined(_DP857X_H)
! 30: #define _DP857X_H
! 31:
! 32: /*
! 33: * Definition of Real Time Clock address space.
! 34: *
! 35: * Clock is a National DP8570A RTC
! 36: */
! 37: #define BSIZE 1 /* No of Bytes for Address Spacing */
! 38: #define MAIN_STATUS 0x00 /* Main status register */
! 39: /*
! 40: * Registers selected with BS=0 RS=0
! 41: */
! 42: #define TIMER0_CTRL 0x01 /* Timer 0 control register */
! 43: #define TIMER1_CTRL 0x02 /* Timer 0 control register */
! 44: #define PERIODIC_FLAGS 0x03 /* Timer periodic flag register */
! 45: #define INTERRUPT_ROUT 0x04 /* Interrupt routing register */
! 46: /*
! 47: * Registers selected with BS=0 RS=1
! 48: */
! 49: #define REAL_TIME_MODE 0x01 /* Real Time Mode register */
! 50: #define OUTPUT_MODE 0x02 /* Output mode register */
! 51: #define INTERRUPT_CTRL0 0x03 /* Interrupt control register 0 */
! 52: #define INTERRUPT_CTRL1 0x04 /* Interrupt control register 1 */
! 53: /*
! 54: * Clock and timer registers when BS=0
! 55: */
! 56: #define CLK_SUBSECONDS 0x05 /* 1/100 seconds reister */
! 57: #define CLK_SECONDS 0x06 /* Seconds */
! 58: #define CLK_MINUTES 0x07 /* Minutes */
! 59: #define CLK_HOURS 0x08 /* Hours */
! 60: #define CLK_DAY 0x09 /* Day of month */
! 61: #define CLK_MONTH 0x0a /* Month */
! 62: #define CLK_YEAR 0x0b /* Year */
! 63: #define CLK_JULIAN_L 0x0c /* Lsb of Julian date */
! 64: #define CLK_JULIAN_H 0x0d /* Msb of Julian date */
! 65: #define CLK_WEEKDAY 0x0e /* Day of week */
! 66: #define TIMER0_LSB 0x0f /* Timer 0 lsb */
! 67: #define TIMER0_MSB 0x10 /* Timer 0 msb */
! 68: #define TIMER1_LSB 0x11 /* Timer 1 lsb */
! 69: #define TIMER1_MSB 0x12 /* Timer 1 msb */
! 70: #define CMP_SECONDS 0x13 /* Seconds compare */
! 71: #define CMP_MINUTES 0x14 /* Minutes compare */
! 72: #define CMP_HOUR 0x15 /* Hours compare */
! 73: #define CMP_DAY 0x16 /* Day of month compare */
! 74: #define CMP_MONTH 0x17 /* Month compare */
! 75: #define CMP_WEEKDAY 0x18 /* Day of week compare */
! 76: #define SAVE_SECONDS 0x19 /* Seconds time save */
! 77: #define SAVE_MINUTES 0x1a /* Minutes time save */
! 78: #define SAVE_HOUR 0x1b /* Hours time save */
! 79: #define SAVE_DAY 0x1c /* Day of month time save */
! 80: #define SAVE_MONTH 0x1d /* Month time save */
! 81: #define RAM_1E 0x1e /* Ram location 1e */
! 82: #define RAM_1F 0x1f /* Ram location 1f */
! 83: #define SIZE_DP857X 0x20 /* Size of dp address map */
! 84:
! 85: #define DP_FIRSTTODREG CLK_SUBSECONDS
! 86: #define DP_LASTTODREG CLK_WEEKDAY
! 87:
! 88: typedef u_int dp_todregs[SIZE_DP857X];
! 89: u_int dp857x_read(void *sc, u_int reg);
! 90: void dp857x_write(void *sc, u_int reg, u_int datum);
! 91:
! 92: /*
! 93: * Get all of the TOD/Alarm registers
! 94: * Must be called at splhigh(), and with the RTC properly set up.
! 95: */
! 96: #define DP857X_GETTOD(sc, regs) \
! 97: do { \
! 98: int i; \
! 99: \
! 100: /* make sure clock regs are selected */ \
! 101: dp857x_write(sc, MAIN_STATUS, 0); \
! 102: /* try read until no rollover */ \
! 103: do { \
! 104: /* read all of the tod/alarm regs */ \
! 105: for (i = DP_FIRSTTODREG; i < SIZE_DP857X; i++) \
! 106: (*regs)[i] = dp857x_read(sc, i); \
! 107: } while(dp857x_read(sc, PERIODIC_FLAGS) & 7); \
! 108: } while (0);
! 109:
! 110: /*
! 111: * Set all of the TOD/Alarm registers
! 112: * Must be called at splhigh(), and with the RTC properly set up.
! 113: */
! 114: #define DP857X_PUTTOD(sc, regs) \
! 115: do { \
! 116: int i; \
! 117: \
! 118: /* stop updates while setting, eg clear start bit */ \
! 119: dp857x_write(sc, MAIN_STATUS, 0x40); \
! 120: dp857x_write(sc, REAL_TIME_MODE, \
! 121: dp857x_read(sc, REAL_TIME_MODE) & 0xF7); \
! 122: \
! 123: /* write all of the tod/alarm regs */ \
! 124: for (i = DP_FIRSTTODREG; i <= DP_LASTTODREG; i++) \
! 125: dp857x_write(sc, i, (*regs)[i]); \
! 126: \
! 127: /* reenable updates, eg set clock start bit */ \
! 128: dp857x_write(sc, REAL_TIME_MODE, \
! 129: dp857x_read(sc, REAL_TIME_MODE) | 0x08); \
! 130: } while (0);
! 131:
! 132: #endif /*_DP857X_H*/
! 133:
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