diff options
Diffstat (limited to 'sys/arch/mips/dev/ds1386reg.h')
| -rw-r--r-- | sys/arch/mips/dev/ds1386reg.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/sys/arch/mips/dev/ds1386reg.h b/sys/arch/mips/dev/ds1386reg.h new file mode 100644 index 00000000000..362ac80e7d5 --- /dev/null +++ b/sys/arch/mips/dev/ds1386reg.h @@ -0,0 +1,119 @@ +/* $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); |