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Annotation of sys/dev/ic/mk48txxreg.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: mk48txxreg.h,v 1.3 2002/03/19 01:48:47 jason Exp $    */
        !             2: /*     $NetBSD: mk48txxreg.h,v 1.4 2000/11/11 11:59:42 pk Exp $ */
        !             3: /*-
        !             4:  * Copyright (c) 2000 The NetBSD Foundation, Inc.
        !             5:  * All rights reserved.
        !             6:  *
        !             7:  * This code is derived from software contributed to The NetBSD Foundation
        !             8:  * by Paul Kranenburg.
        !             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: /*
        !            40:  * Mostek MK48Txx clocks.
        !            41:  *
        !            42:  * The MK48T02 has 2KB of non-volatile memory. The time-of-day clock
        !            43:  * registers start at offset 0x7f8.
        !            44:  *
        !            45:  * The MK48T08 and MK48T18 have 8KB of non-volatile memory
        !            46:  *
        !            47:  * The MK48T59 also has 8KB of non-volatile memory but in addition it
        !            48:  * has a battery low detection bit and a power supply wakeup alarm for
        !            49:  * power management.  It's at offset 0x1ff0 in the NVRAM.
        !            50:  */
        !            51:
        !            52: /*
        !            53:  * Mostek MK48TXX register definitions
        !            54:  */
        !            55:
        !            56: /*
        !            57:  * The first bank of eight registers at offset (nvramsz - 16) is
        !            58:  * available only on recenter (which??) MK48Txx models.
        !            59:  */
        !            60: #define MK48TXX_X0     0       /* find out later */
        !            61:                                /* ... */
        !            62: #define MK48TXX_X7     7       /* find out later */
        !            63: #define MK48TXX_ICSR   8       /* control register */
        !            64: #define MK48TXX_ISEC   9       /* seconds (0..59; BCD) */
        !            65: #define MK48TXX_IMIN   10      /* minutes (0..59; BCD) */
        !            66: #define MK48TXX_IHOUR  11      /* hour (0..23; BCD) */
        !            67: #define MK48TXX_IWDAY  12      /* weekday (1..7) */
        !            68: #define MK48TXX_IDAY   13      /* day in month (1..31; BCD) */
        !            69: #define MK48TXX_IMON   14      /* month (1..12; BCD) */
        !            70: #define MK48TXX_IYEAR  15      /* year (0..99; BCD) */
        !            71:
        !            72: /* Bits in the control register */
        !            73: #define MK48TXX_CSR_WRITE      0x80    /* want to write */
        !            74: #define MK48TXX_CSR_READ       0x40    /* want to read (freeze clock) */
        !            75:
        !            76: #define MK48T02_CLKSZ          2048
        !            77: #define MK48T02_CLKOFF         0x7f0
        !            78:
        !            79: #define MK48T08_CLKSZ          8192
        !            80: #define MK48T08_CLKOFF         0x1ff0
        !            81:
        !            82: #define MK48T18_CLKSZ          8192
        !            83: #define MK48T18_CLKOFF         0x1ff0
        !            84:
        !            85: #define MK48T59_CLKSZ          8192
        !            86: #define MK48T59_CLKOFF         0x1ff0
        !            87:
        !            88: /* Chip attach function */
        !            89: todr_chip_handle_t mk48txx_attach(bus_space_tag_t, bus_space_handle_t,
        !            90:                                  const char *, int);
        !            91:
        !            92: /* Retrieve size of the on-chip NVRAM area */
        !            93: int    mk48txx_get_nvram_size(todr_chip_handle_t, bus_size_t *);