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freebsd/sys/dev/mk48txx/mk48txxreg.h
Marius Strobl 2d86abb059 o Sync with the NetBSD mk48txx driver (the result simplyfies some changes 
I have in mind for the genclock interface):
  - Recognize the MK48T18 as well (differs from the MK48T08 only in
    packaging options and voltages).
  - Allow MD code to provide functions for reading/writing NVRAM/RTC
    locations.
    If passed NULL, the old behaviour using bus_space_{read,write}_1() is
    used. Otherwise, all access to the chip goes via the MD functions.
    This is necessary for mvmeppc boards where the mk48txx NVRAM/RTC is
    not directly addressable.
  - Cleanup MI mk48txx(4) todclock driver:
    - Prepare mk48txxvar.h and leave only register definitions in
      mk48txxreg.h.
    - Define struct mk48txx_softc as usual devices and allocate necessary
      members in it.
    - Change mk48txx_attach() to only take a device_t.
o While converting the sparc64 eeprom driver to the above changes:
  - Remove some dead code and stale comments.
  - Use the NVRAM size provided by the mk48txx driver instead of hardcoding
    it as suggested by a comment.
  - Add a comment about why it doesn't make much sense to read the hostid
    directly from the NVRAM except for displaying it when attaching.
  - Don't print the hostid if it reads all zero because it's stored
    elsewhere.
2004-11-17 12:54:12 +00:00

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/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* from: NetBSD: mk48txxreg.h,v 1.7 2003/11/01 22:41:42 tsutsui Exp
*
* $FreeBSD$
*/
/*
* Mostek MK48Txx clocks.
*
* The MK48T02 has 2KB of non-volatile memory. The time-of-day clock
* registers start at offset 0x7f8.
*
* The MK48T08 and MK48T18 have 8KB of non-volatile memory
*
* The MK48T59 also has 8KB of non-volatile memory but in addition it
* has a battery low detection bit and a power supply wakeup alarm for
* power management. It's at offset 0x1ff0 in the NVRAM.
*/
/*
* Mostek MK48TXX register definitions
*/
/*
* The first bank of eight registers at offset (nvramsz - 16) is
* available only on recenter (which?) MK48Txx models.
*/
#define MK48TXX_FLAGS 0 /* flags register */
#define MK48TXX_UNUSED 1 /* unused */
#define MK48TXX_ASEC 2 /* alarm seconds (0..59; BCD) */
#define MK48TXX_AMIN 3 /* alarm minutes (0..59; BCD) */
#define MK48TXX_AHOUR 4 /* alarm hours (0..23; BCD) */
#define MK48TXX_ADAY 5 /* alarm day in month (1..31; BCD) */
#define MK48TXX_INTR 6 /* interrupts register */
#define MK48TXX_WDOG 7 /* watchdog register */
#define MK48TXX_ICSR 8 /* control register */
#define MK48TXX_ISEC 9 /* seconds (0..59; BCD) */
#define MK48TXX_IMIN 10 /* minutes (0..59; BCD) */
#define MK48TXX_IHOUR 11 /* hours (0..23; BCD) */
#define MK48TXX_IWDAY 12 /* weekday (1..7) */
#define MK48TXX_IDAY 13 /* day in month (1..31; BCD) */
#define MK48TXX_IMON 14 /* month (1..12; BCD) */
#define MK48TXX_IYEAR 15 /* year (0..99; BCD) */
/*
* Note that some of the bits below that are not in the first eight
* registers are also only available on models with an extended
* register set.
*/
/* Bits in the flags register (extended only) */
#define MK48TXX_FLAGS_BL 0x10 /* battery low (read only) */
#define MK48TXX_FLAGS_AF 0x40 /* alarm flag (read only) */
#define MK48TXX_FLAGS_WDF 0x80 /* watchdog flag (read only) */
/* Bits in the alarm seconds register (extended only) */
#define MK48TXX_ASEC_MASK 0x7f /* mask for alarm seconds */
#define MK48TXX_ASEC_RPT1 0x80 /* alarm repeat mode bit 1 */
/* Bits in the alarm minutes register (extended only) */
#define MK48TXX_AMIN_MASK 0x7f /* mask for alarm minutes */
#define MK48TXX_AMIN_RPT2 0x80 /* alarm repeat mode bit 2 */
/* Bits in the alarm hours register (extended only) */
#define MK48TXX_AHOUR_MASK 0x3f /* mask for alarm hours */
#define MK48TXX_AHOUR_RPT3 0x80 /* alarm repeat mode bit 3 */
/* Bits in the alarm day in month register (extended only) */
#define MK48TXX_ADAY_MASK 0x3f /* mask for alarm day in month */
#define MK48TXX_ADAY_RPT4 0x80 /* alarm repeat mode bit 4 */
/* Bits in the interrupts register (extended only) */
#define MK48TXX_INTR_ABE 0x20 /* alarm in battery back-up mode */
#define MK48TXX_INTR_AFE 0x80 /* alarm flag enable */
/* Bits in the watchdog register (extended only) */
#define MK48TXX_WDOG_RB_1_16 0x00 /* watchdog resolution 1/16 second */
#define MK48TXX_WDOG_RB_1_4 0x01 /* watchdog resolution 1/4 second */
#define MK48TXX_WDOG_RB_1 0x02 /* watchdog resolution 1 second */
#define MK48TXX_WDOG_RB_4 0x03 /* watchdog resolution 4 seconds */
#define MK48TXX_WDOG_BMB_MASK 0x7c /* mask for watchdog multiplier */
#define MK48TXX_WDOG_WDS 0x80 /* watchdog steering bit */
/* Bits in the control register */
#define MK48TXX_CSR_CALIB_MASK 0x1f /* mask for calibration step width */
#define MK48TXX_CSR_SIGN 0x20 /* sign of above calibration witdh */
#define MK48TXX_CSR_READ 0x40 /* want to read (freeze clock) */
#define MK48TXX_CSR_WRITE 0x80 /* want to write */
/* Bits in the seconds register */
#define MK48TXX_SEC_MASK 0x7f /* mask for seconds */
#define MK48TXX_SEC_ST 0x80 /* stop oscillator */
/* Bits in the minutes register */
#define MK48TXX_MIN_MASK 0x7f /* mask for minutes */
/* Bits in the hours register */
#define MK48TXX_HOUR_MASK 0x3f /* mask for hours */
/* Bits in the century/weekday register */
#define MK48TXX_WDAY_MASK 0x07 /* mask for weekday */
#define MK48TXX_WDAY_CB 0x10 /* century bit (extended only) */
#define MK48TXX_WDAY_CEB 0x20 /* century enable bit (extended only) */
#define MK48TXX_WDAY_FT 0x40 /* frequency test */
/* Bits in the day in month register */
#define MK48TXX_DAY_MASK 0x3f /* mask for day in month */
/* Bits in the month register */
#define MK48TXX_MON_MASK 0x1f /* mask for month */
/* Bits in the year register */
#define MK48TXX_YEAR_MASK 0xff /* mask for year */
/* Model specific NVRAM sizes and clock offsets */
#define MK48T02_CLKSZ 2048
#define MK48T02_CLKOFF 0x7f0
#define MK48T08_CLKSZ 8192
#define MK48T08_CLKOFF 0x1ff0
#define MK48T18_CLKSZ 8192
#define MK48T18_CLKOFF 0x1ff0
#define MK48T59_CLKSZ 8192
#define MK48T59_CLKOFF 0x1ff0
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