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      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