bedc4e0571
- Add support for storing the century in MK48TXX_WDAY_CB on MK48Txx with extended registers when the MK48TXX_NO_CENT_ADJUST flag is set (and which is termed somewhat confusing as it actually means don't manually adjust the century in the driver). - Add the MI part of interfacing the watchdog functionality of MK48Txx with extended registers with watchdog(9). This is inspired by the SunOS/Solaris drivers for the 'eeprom' devices also having watchdog support. I actually expected this to work out of the box on Sun Exx00 machines with 'eeprom' devices which have a 'watchdog-enable' property. On terminal count of the the watchdog timer however only the MK48TXX_FLAGS_WDF bit rises but the reset signal and the interrupt respectively (depending on whether the MK48TXX_WDOG_WDS bit of the chip and the MK48TXX_WDOG_ENABLE_WDS flag of the driver respectively is set) goes nowhere. Apparently passing the reset signal on to the WDR line of the CPUs has to be enabled somewhere else but we don't have documentation for the Exx00 specific controllers. I decided to commit this nevertheless so it can be enabled in the eeprom(4) front-end later in e.g. 6.0-STABLE without breaking the API. Besides the Exx00 the watchdog part of the MK48Txx should also work on E250 and E450. Possibly also without extra fiddling on these machines but I haven't found someone willing to give it a try on such a machine so far. - Use uintXX_t instead of u_intXX_t, use __func__ instead of hardcoded function names in error strings.
70 lines
3.0 KiB
C
70 lines
3.0 KiB
C
/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* from: NetBSD: mk48txxvar.h,v 1.1 2003/11/01 22:41:42 tsutsui Exp
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*
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* $FreeBSD$
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*/
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typedef uint8_t (*mk48txx_nvrd_t)(device_t, int);
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typedef void (*mk48txx_nvwr_t)(device_t, int, uint8_t);
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struct mk48txx_softc {
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bus_space_tag_t sc_bst; /* bus space tag */
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bus_space_handle_t sc_bsh; /* bus space handle */
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struct mtx sc_mtx; /* hardware mutex */
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eventhandler_tag sc_wet; /* watchdog event handler tag */
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const char *sc_model; /* chip model name */
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bus_size_t sc_nvramsz; /* Size of NVRAM on the chip */
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bus_size_t sc_clkoffset; /* Offset in NVRAM to clock bits */
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u_int sc_year0; /* year counter offset */
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u_int sc_flag; /* MD flags */
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#define MK48TXX_NO_CENT_ADJUST 0x0001 /* don't manually adjust century */
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#define MK48TXX_WDOG_REGISTER 0x0002 /* register watchdog */
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#define MK48TXX_WDOG_ENABLE_WDS 0x0004 /* enable watchdog steering bit */
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mk48txx_nvrd_t sc_nvrd; /* NVRAM/RTC read function */
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mk48txx_nvwr_t sc_nvwr; /* NVRAM/RTC write function */
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};
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/* Chip attach function */
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int mk48txx_attach(device_t);
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/* Methods for the clock interface */
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int mk48txx_gettime(device_t, struct timespec *);
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int mk48txx_settime(device_t, struct timespec *);
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