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 *);
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