1 /* $NetBSD: tod.h,v 1.4 2005/12/11 12:19:16 christos Exp $ */ 2 3 /* 4 * Structures and macros des accessing the National Semiconductor 5 * MM58167 time-of-day chip as wired in the Sun2. See 6 * http://www.national.com/ds/MM/MM58167B.pdf for data sheets, 7 * and sys/dev/ic/mm58167var.h. 8 */ 9 10 #if __for_reference_only__ 11 struct mm58167regs { 12 13 /* the various timers. all of these values are in BCD: */ 14 15 /* the most significant digit of this value is the milliseconds 16 unit; least significant digit of this value is undefined: */ 17 uint8_t mm58167_msec_xxx; 18 uint8_t mm58167_unused0; 19 /* both digits of this value make up centiseconds: */ 20 uint8_t mm58167_csec; 21 uint8_t mm58167_unused1; 22 uint8_t mm58167_sec; 23 uint8_t mm58167_unused2; 24 uint8_t mm58167_min; 25 uint8_t mm58167_unused3; 26 uint8_t mm58167_hour; 27 uint8_t mm58167_unused4; 28 uint8_t mm58167_wday; 29 uint8_t mm58167_unused5; 30 uint8_t mm58167_day; 31 uint8_t mm58167_unused6; 32 uint8_t mm58167_mon; 33 uint8_t mm58167_unused7; 34 35 /* the compare latches. these line up with the timers above, but 36 since we don't use them, we don't go through the trouble of 37 defining real members for them: */ 38 struct { 39 uint8_t _mm58167_latch_val; 40 uint8_t _mm58167_latch_unused; 41 } _mm58167_latches[8]; 42 43 uint8_t mm58167_isr; /* interrupt status - not used */ 44 uint8_t _mm58167_unused8; 45 uint8_t mm58167_icr; /* interrupt control - not used */ 46 uint8_t _mm58167_unused9; 47 uint8_t mm58167_creset; /* counter reset mask */ 48 uint8_t _mm58167_unused10; 49 uint8_t mm58167_lreset; /* latch reset mask */ 50 uint8_t _mm58167_unused11; 51 uint8_t mm58167_status; /* bad counter read status */ 52 uint8_t _mm58167_unused12; 53 uint8_t mm58167_go; /* GO - start at integral seconds */ 54 uint8_t _mm58167_unused13; 55 uint8_t mm58167_stby; /* standby mode - not used */ 56 uint8_t _mm58167_unused14; 57 uint8_t mm58167_test; /* test mode - ??? */ 58 uint8_t _mm58167_unused15; 59 }; 60 #endif 61 62 /* 63 * Register offsets. 64 */ 65 #define MM58167REG_MSEC_XXX 0 66 #define MM58167REG_CSEC 2 67 #define MM58167REG_SEC 4 68 #define MM58167REG_MIN 6 69 #define MM58167REG_HOUR 8 70 #define MM58167REG_WDAY 10 71 #define MM58167REG_DAY 12 72 #define MM58167REG_MON 14 73 #define MM58167REG_STATUS 40 74 #define MM58167REG_GO 42 75 #define MM58167REG_BANK_SZ 48 76