Annotation of sys/dev/ic/dp857xreg.h, Revision 1.1.1.1
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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