The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/intersil7170.h

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    1 /*      $NetBSD: intersil7170.h,v 1.4 2000/11/11 11:18:07 pk Exp $      */
    2 
    3 /*-
    4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Adam Glass.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #ifndef _INTERSIL7170_H
   40 #define _INTERSIL7170_H
   41 
   42 /*
   43  * Driver support for the intersil7170 used in sun[34]s to provide
   44  * real time clock and time-of-day support.
   45  *
   46  * Derived from: datasheet "ICM7170 a uP-Compatible Real-Time Clock"
   47  *                          document #301680-005, Dec 85
   48  *
   49  * Note that this device provides both time-of-day and interval timer
   50  * functionality. Both functions use the same control registers. On top
   51  * of that, the command control register is write-only. Currently, this
   52  * driver assumes that the interval timer is to be enabled, and hence
   53  * always sets/restores the INTERSIL_CMD_IENABLE control bit when
   54  * manipulating the TOD.
   55  */
   56 
   57 struct intersil_dt {                   /* from p. 7 of 10 */
   58     u_int8_t dt_csec;
   59     u_int8_t dt_hour;
   60     u_int8_t dt_min;
   61     u_int8_t dt_sec;
   62     u_int8_t dt_month;
   63     u_int8_t dt_day;
   64     u_int8_t dt_year;
   65     u_int8_t dt_dow;
   66 };
   67 
   68 struct intersil7170 {
   69     struct intersil_dt counters;
   70     struct intersil_dt clk_ram; /* should be ok as both are word aligned */
   71     u_int8_t clk_intr_reg;
   72     u_int8_t clk_cmd_reg;
   73 };
   74 
   75 /* Indices to time-of-day clock registers */
   76 #define INTERSIL_ICSEC  0
   77 #define INTERSIL_IHOUR  1
   78 #define INTERSIL_IMIN   2
   79 #define INTERSIL_ISEC   3
   80 #define INTERSIL_IMON   4
   81 #define INTERSIL_IDAY   5
   82 #define INTERSIL_IYEAR  6
   83 #define INTERSIL_IDOW   7
   84 
   85 #define INTERSIL_IINTR  16
   86 #define INTERSIL_ICMD   17
   87 
   88 /*  bit assignments for command register, p. 6 of 10, write-only */
   89 #define INTERSIL_CMD_FREQ_32K    0x0
   90 #define INTERSIL_CMD_FREQ_1M     0x1
   91 #define INTERSIL_CMD_FREQ_2M     0x2
   92 #define INTERSIL_CMD_FREQ_4M     0x3
   93 
   94 #define INTERSIL_CMD_12HR_MODE   0x0
   95 #define INTERSIL_CMD_24HR_MODE   0x4
   96 
   97 #define INTERSIL_CMD_STOP        0x0
   98 #define INTERSIL_CMD_RUN         0x8
   99 
  100 #define INTERSIL_CMD_IDISABLE   0x0
  101 #define INTERSIL_CMD_IENABLE   0x10
  102 
  103 #define INTERSIL_CMD_TEST_MODE      0x20
  104 #define INTERSIL_CMD_NORMAL_MODE    0x0
  105 
  106 /* bit assignments for interrupt register r/w, p 7 of 10 */
  107 
  108 #define INTERSIL_INTER_ALARM       0x1 /* r/w */
  109 #define INTERSIL_INTER_CSECONDS    0x2 /* r/w */
  110 #define INTERSIL_INTER_DSECONDS    0x4 /* r/w */
  111 #define INTERSIL_INTER_SECONDS     0x8 /* r/w */
  112 #define INTERSIL_INTER_MINUTES    0x10 /* r/w */
  113 #define INTERSIL_INTER_HOURS      0x20 /* r/w */
  114 #define INTERSIL_INTER_DAYS       0x40 /* r/w */
  115 #define INTERSIL_INTER_PENDING    0x80 /* read-only */
  116 
  117 #define INTERSIL_INTER_BITS "\2\10PENDING\7DAYS\6HRS\5MIN\4SCDS\3DSEC\2CSEC\1ALARM"
  118 
  119 #ifndef sun3 /* XXX sun3 does not use MI driver, which needs bus_space(9) */
  120 todr_chip_handle_t intersil7170_attach(bus_space_tag_t, bus_space_handle_t, int);
  121 #endif
  122 #endif  /* _INTERSIL7170_H */

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