diff options
Diffstat (limited to 'sys/dev/mk48txx/mk48txx.c')
| -rw-r--r-- | sys/dev/mk48txx/mk48txx.c | 332 |
1 files changed, 0 insertions, 332 deletions
diff --git a/sys/dev/mk48txx/mk48txx.c b/sys/dev/mk48txx/mk48txx.c deleted file mode 100644 index 04867b14c0f2..000000000000 --- a/sys/dev/mk48txx/mk48txx.c +++ /dev/null @@ -1,332 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-2-Clause-FreeBSD - * - * 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. - * - * 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. - * - * $NetBSD: mk48txx.c,v 1.25 2008/04/28 20:23:50 martin Exp $ - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -/* - * Mostek MK48T02, MK48T08, MK48T18, MK48T37 and MK48T59 time-of-day chip - * subroutines - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bus.h> -#include <sys/clock.h> -#include <sys/eventhandler.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/rman.h> -#include <sys/watchdog.h> - -#include <machine/bus.h> - -#include <dev/mk48txx/mk48txxreg.h> -#include <dev/mk48txx/mk48txxvar.h> - -#include "clock_if.h" - -static uint8_t mk48txx_def_nvrd(device_t dev, int off); -static void mk48txx_def_nvwr(device_t dev, int off, uint8_t v); -static void mk48txx_watchdog(void *arg, u_int cmd, int *error); - -static const struct { - const char *name; - bus_size_t nvramsz; - bus_size_t clkoff; - u_int flags; -#define MK48TXX_EXT_REGISTERS 1 /* Has extended register set. */ -} mk48txx_models[] = { - { "mk48t02", MK48T02_CLKSZ, MK48T02_CLKOFF, 0 }, - { "mk48t08", MK48T08_CLKSZ, MK48T08_CLKOFF, 0 }, - { "mk48t18", MK48T18_CLKSZ, MK48T18_CLKOFF, 0 }, - { "mk48t37", MK48T37_CLKSZ, MK48T37_CLKOFF, MK48TXX_EXT_REGISTERS }, - { "mk48t59", MK48T59_CLKSZ, MK48T59_CLKOFF, MK48TXX_EXT_REGISTERS }, -}; - -int -mk48txx_attach(device_t dev) -{ - struct mk48txx_softc *sc; - int i; - uint8_t wday; - - sc = device_get_softc(dev); - - if (mtx_initialized(&sc->sc_mtx) == 0) { - device_printf(dev, "%s: mutex not initialized\n", __func__); - return (ENXIO); - } - - device_printf(dev, "model %s", sc->sc_model); - i = sizeof(mk48txx_models) / sizeof(mk48txx_models[0]); - while (--i >= 0) { - if (strcmp(sc->sc_model, mk48txx_models[i].name) == 0) { - break; - } - } - if (i < 0) { - device_printf(dev, " (unsupported)\n"); - return (ENXIO); - } - printf("\n"); - sc->sc_nvramsz = mk48txx_models[i].nvramsz; - sc->sc_clkoffset = mk48txx_models[i].clkoff; - - if (sc->sc_nvrd == NULL) - sc->sc_nvrd = mk48txx_def_nvrd; - if (sc->sc_nvwr == NULL) - sc->sc_nvwr = mk48txx_def_nvwr; - - if (mk48txx_models[i].flags & MK48TXX_EXT_REGISTERS) { - mtx_lock(&sc->sc_mtx); - if ((*sc->sc_nvrd)(dev, sc->sc_clkoffset + MK48TXX_FLAGS) & - MK48TXX_FLAGS_BL) { - mtx_unlock(&sc->sc_mtx); - device_printf(dev, "%s: battery low\n", __func__); - return (ENXIO); - } - mtx_unlock(&sc->sc_mtx); - } - - if (sc->sc_flag & MK48TXX_NO_CENT_ADJUST) { - /* - * Use MK48TXX_WDAY_CB instead of manually adjusting the - * century. - */ - if (!(mk48txx_models[i].flags & MK48TXX_EXT_REGISTERS)) { - device_printf(dev, "%s: no century bit\n", __func__); - return (ENXIO); - } else { - mtx_lock(&sc->sc_mtx); - wday = (*sc->sc_nvrd) - (dev, sc->sc_clkoffset + MK48TXX_IWDAY); - wday |= MK48TXX_WDAY_CEB; - (*sc->sc_nvwr) - (dev, sc->sc_clkoffset + MK48TXX_IWDAY, wday); - mtx_unlock(&sc->sc_mtx); - } - } - - clock_register(dev, 1000000); /* 1 second resolution */ - - if ((sc->sc_flag & MK48TXX_WDOG_REGISTER) && - (mk48txx_models[i].flags & MK48TXX_EXT_REGISTERS)) { - sc->sc_wet = EVENTHANDLER_REGISTER(watchdog_list, - mk48txx_watchdog, dev, 0); - device_printf(dev, - "watchdog registered, timeout interval max. 128 sec\n"); - } - - return (0); -} - -/* - * Get time-of-day and convert to a `struct timespec' - * Return 0 on success; an error number otherwise. - */ -int -mk48txx_gettime(device_t dev, struct timespec *ts) -{ - struct mk48txx_softc *sc; - bus_size_t clkoff; - struct clocktime ct; - int year; - uint8_t csr; - - sc = device_get_softc(dev); - clkoff = sc->sc_clkoffset; - - mtx_lock(&sc->sc_mtx); - /* enable read (stop time) */ - csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR); - csr |= MK48TXX_CSR_READ; - (*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr); - -#define FROMREG(reg, mask) ((*sc->sc_nvrd)(dev, clkoff + (reg)) & (mask)) - - ct.nsec = 0; - ct.sec = FROMBCD(FROMREG(MK48TXX_ISEC, MK48TXX_SEC_MASK)); - ct.min = FROMBCD(FROMREG(MK48TXX_IMIN, MK48TXX_MIN_MASK)); - ct.hour = FROMBCD(FROMREG(MK48TXX_IHOUR, MK48TXX_HOUR_MASK)); - ct.day = FROMBCD(FROMREG(MK48TXX_IDAY, MK48TXX_DAY_MASK)); -#if 0 - /* Map dow from 1 - 7 to 0 - 6; FROMBCD() isn't necessary here. */ - ct.dow = FROMREG(MK48TXX_IWDAY, MK48TXX_WDAY_MASK) - 1; -#else - /* - * Set dow = -1 because some drivers (for example the NetBSD and - * OpenBSD mk48txx(4)) don't set it correctly. - */ - ct.dow = -1; -#endif - ct.mon = FROMBCD(FROMREG(MK48TXX_IMON, MK48TXX_MON_MASK)); - year = FROMBCD(FROMREG(MK48TXX_IYEAR, MK48TXX_YEAR_MASK)); - year += sc->sc_year0; - if (sc->sc_flag & MK48TXX_NO_CENT_ADJUST) - year += (FROMREG(MK48TXX_IWDAY, MK48TXX_WDAY_CB) >> - MK48TXX_WDAY_CB_SHIFT) * 100; - else if (year < POSIX_BASE_YEAR) - year += 100; - -#undef FROMREG - - ct.year = year; - - /* time wears on */ - csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR); - csr &= ~MK48TXX_CSR_READ; - (*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr); - mtx_unlock(&sc->sc_mtx); - - return (clock_ct_to_ts(&ct, ts)); -} - -/* - * Set the time-of-day clock based on the value of the `struct timespec' arg. - * Return 0 on success; an error number otherwise. - */ -int -mk48txx_settime(device_t dev, struct timespec *ts) -{ - struct mk48txx_softc *sc; - bus_size_t clkoff; - struct clocktime ct; - uint8_t csr; - int cent, year; - - sc = device_get_softc(dev); - clkoff = sc->sc_clkoffset; - - /* Accuracy is only one second. */ - if (ts->tv_nsec >= 500000000) - ts->tv_sec++; - ts->tv_nsec = 0; - clock_ts_to_ct(ts, &ct); - - mtx_lock(&sc->sc_mtx); - /* enable write */ - csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR); - csr |= MK48TXX_CSR_WRITE; - (*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr); - -#define TOREG(reg, mask, val) \ - ((*sc->sc_nvwr)(dev, clkoff + (reg), \ - ((*sc->sc_nvrd)(dev, clkoff + (reg)) & ~(mask)) | \ - ((val) & (mask)))) - - TOREG(MK48TXX_ISEC, MK48TXX_SEC_MASK, TOBCD(ct.sec)); - TOREG(MK48TXX_IMIN, MK48TXX_MIN_MASK, TOBCD(ct.min)); - TOREG(MK48TXX_IHOUR, MK48TXX_HOUR_MASK, TOBCD(ct.hour)); - /* Map dow from 0 - 6 to 1 - 7; TOBCD() isn't necessary here. */ - TOREG(MK48TXX_IWDAY, MK48TXX_WDAY_MASK, ct.dow + 1); - TOREG(MK48TXX_IDAY, MK48TXX_DAY_MASK, TOBCD(ct.day)); - TOREG(MK48TXX_IMON, MK48TXX_MON_MASK, TOBCD(ct.mon)); - - year = ct.year - sc->sc_year0; - if (sc->sc_flag & MK48TXX_NO_CENT_ADJUST) { - cent = year / 100; - TOREG(MK48TXX_IWDAY, MK48TXX_WDAY_CB, - cent << MK48TXX_WDAY_CB_SHIFT); - year -= cent * 100; - } else if (year > 99) - year -= 100; - TOREG(MK48TXX_IYEAR, MK48TXX_YEAR_MASK, TOBCD(year)); - -#undef TOREG - - /* load them up */ - csr = (*sc->sc_nvrd)(dev, clkoff + MK48TXX_ICSR); - csr &= ~MK48TXX_CSR_WRITE; - (*sc->sc_nvwr)(dev, clkoff + MK48TXX_ICSR, csr); - mtx_unlock(&sc->sc_mtx); - return (0); -} - -static uint8_t -mk48txx_def_nvrd(device_t dev, int off) -{ - struct mk48txx_softc *sc; - - sc = device_get_softc(dev); - return (bus_read_1(sc->sc_res, off)); -} - -static void -mk48txx_def_nvwr(device_t dev, int off, uint8_t v) -{ - struct mk48txx_softc *sc; - - sc = device_get_softc(dev); - bus_write_1(sc->sc_res, off, v); -} - -static void -mk48txx_watchdog(void *arg, u_int cmd, int *error) -{ - device_t dev; - struct mk48txx_softc *sc; - uint8_t t, wdog; - - dev = arg; - sc = device_get_softc(dev); - - t = cmd & WD_INTERVAL; - if (t >= 26 && t <= 37) { - wdog = 0; - if (t <= WD_TO_2SEC) { - wdog |= MK48TXX_WDOG_RB_1_16; - t -= 26; - } else if (t <= WD_TO_8SEC) { - wdog |= MK48TXX_WDOG_RB_1_4; - t -= WD_TO_250MS; - } else if (t <= WD_TO_32SEC) { - wdog |= MK48TXX_WDOG_RB_1; - t -= WD_TO_1SEC; - } else { - wdog |= MK48TXX_WDOG_RB_4; - t -= WD_TO_4SEC; - } - wdog |= (min(1 << t, - MK48TXX_WDOG_BMB_MASK >> MK48TXX_WDOG_BMB_SHIFT)) << - MK48TXX_WDOG_BMB_SHIFT; - if (sc->sc_flag & MK48TXX_WDOG_ENABLE_WDS) - wdog |= MK48TXX_WDOG_WDS; - *error = 0; - } else { - wdog = 0; - } - mtx_lock(&sc->sc_mtx); - (*sc->sc_nvwr)(dev, sc->sc_clkoffset + MK48TXX_WDOG, wdog); - mtx_unlock(&sc->sc_mtx); -} |