sun4u/io/todm5819p_rmc.c

1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * CDDL HEADER START
1c42de6d020629af774dd9e9fc81be3f3ed9398egd *
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * The contents of this file are subject to the terms of the
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Common Development and Distribution License (the "License").
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * You may not use this file except in compliance with the License.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd *
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * or http://www.opensolaris.org/os/licensing.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * See the License for the specific language governing permissions
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * and limitations under the License.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd *
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * When distributing Covered Code, include this CDDL HEADER in each
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * If applicable, add the following below this CDDL HEADER, with the
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * fields enclosed by brackets "[]" replaced with your own identifying
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * information: Portions Copyright [yyyy] [name of copyright owner]
1c42de6d020629af774dd9e9fc81be3f3ed9398egd *
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * CDDL HEADER END
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Use is subject to license terms.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * tod driver module for ALI M5819P part
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/types.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/conf.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/kmem.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/open.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/ddi.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/sunddi.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/todm5819p.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/rmc_comm_dp.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/rmc_comm_drvintf.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/modctl.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/stat.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/clock.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/reboot.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd#include <sys/machsystm.h>
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic timestruc_t  todm5819p_rmc_get(void);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void     todm5819p_rmc_set(timestruc_t);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic uint_t       todm5819p_rmc_set_watchdog_timer(uint_t);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic uint_t       todm5819p_rmc_clear_watchdog_timer(void);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void     todm5819p_rmc_set_power_alarm(timestruc_t);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void     todm5819p_rmc_clear_power_alarm(void);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic uint64_t     todm5819p_rmc_get_cpufrequency(void);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdextern uint64_t     find_cpufrequency(volatile uint8_t *);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * External variables
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdextern int  watchdog_enable;
1c42de6d020629af774dd9e9fc81be3f3ed9398egdextern int  watchdog_available;
1c42de6d020629af774dd9e9fc81be3f3ed9398egdextern int  boothowto;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Global variables
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdint m5819p_debug_flags;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Module linkage information for the kernel.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic struct modlmisc modlmisc = {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    &mod_miscops, "tod module for ALI M5819P"
1c42de6d020629af774dd9e9fc81be3f3ed9398egd};
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic struct modlinkage modlinkage = {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    MODREV_1, (void *)&modlmisc, NULL
1c42de6d020629af774dd9e9fc81be3f3ed9398egd};
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic todinfo_t rtc_to_tod(struct rtc_t *);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void read_rtc(struct rtc_t *);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void write_rtc_time(struct rtc_t *);
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void write_rtc_alarm(struct rtc_t *);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdint
1c42de6d020629af774dd9e9fc81be3f3ed9398egd_init(void)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    if (strcmp(tod_module_name, "todm5819p_rmc") == 0) {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        M5819P_ADDR_REG = RTC_B;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        M5819P_DATA_REG = (RTC_DM | RTC_HM);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        tod_ops.tod_get = todm5819p_rmc_get;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        tod_ops.tod_set = todm5819p_rmc_set;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        tod_ops.tod_set_watchdog_timer =
1c42de6d020629af774dd9e9fc81be3f3ed9398egd            todm5819p_rmc_set_watchdog_timer;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        tod_ops.tod_clear_watchdog_timer =
1c42de6d020629af774dd9e9fc81be3f3ed9398egd            todm5819p_rmc_clear_watchdog_timer;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        tod_ops.tod_set_power_alarm = todm5819p_rmc_set_power_alarm;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        tod_ops.tod_clear_power_alarm = todm5819p_rmc_clear_power_alarm;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        tod_ops.tod_get_cpufrequency = todm5819p_rmc_get_cpufrequency;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        if (boothowto & RB_DEBUG) {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd            cmn_err(CE_WARN, "todm5819p_rmc: kernel debugger "
1c42de6d020629af774dd9e9fc81be3f3ed9398egd                "detected: hardware watchdog disabled");
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        }
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    }
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (mod_install(&modlinkage));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdint
1c42de6d020629af774dd9e9fc81be3f3ed9398egd_fini(void)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    if (strcmp(tod_module_name, "todm5819p_rmc") == 0)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        return (EBUSY);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (mod_remove(&modlinkage));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * The loadable-module _info(9E) entry point
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdint
1c42de6d020629af774dd9e9fc81be3f3ed9398egd_info(struct modinfo *modinfop)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (mod_info(&modlinkage, modinfop));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Read the current time from the clock chip and convert to UNIX form.
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson * Assumes that the year in the clock chip is valid.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Must be called with tod_lock held.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic timestruc_t
1c42de6d020629af774dd9e9fc81be3f3ed9398egdtodm5819p_rmc_get(void)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    int i;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    int s;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    timestruc_t ts;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    struct rtc_t rtc;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ASSERT(MUTEX_HELD(&tod_lock));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /* set the hw watchdog timer if it's been activated */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    if (watchdog_activated) {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        int ret = 0;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        ret = tod_ops.tod_set_watchdog_timer(0);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd         * The empty set_watchdog routine returns a 0. So if a
1c42de6d020629af774dd9e9fc81be3f3ed9398egd         * coded routine fails we will look for a -1 for a failure.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd         */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        if (ret == -1)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd            cmn_err(CE_WARN, "todm5819p: failed to set hardware "
3ff9862d55ee4dff45d6f10857b2d2f12fd133dfJustin Frank                "watchdog timer.");
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    }
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * Read current time from the tod. If the tod isn't accessible, wait and
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * retry.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * Run critical in the time critical section to avoid being interrupted
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    for (i = 0; i < TODM5819_UIP_RETRY_THRESH; i++) {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        s = ddi_enter_critical();
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        M5819P_ADDR_REG = RTC_A;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        if (!(M5819P_DATA_REG & RTC_UIP)) {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd            read_rtc(&rtc);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd            ddi_exit_critical(s);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd            break;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        }
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        ddi_exit_critical(s);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        drv_usecwait(TODM5819_UIP_WAIT_USEC);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    }
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    if (i == TODM5819_UIP_RETRY_THRESH) {
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd         * tod is inaccessible: just return current software time
1c42de6d020629af774dd9e9fc81be3f3ed9398egd         */
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        tod_status_set(TOD_GET_FAILED);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd        return (hrestime);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    }
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    /* read was successful so ensure failure flag is clear */
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    tod_status_clear(TOD_GET_FAILED);
3ff9862d55ee4dff45d6f10857b2d2f12fd133dfJustin Frank
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ts.tv_sec = tod_to_utc(rtc_to_tod(&rtc));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ts.tv_nsec = 0;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (ts);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic todinfo_t
1c42de6d020629af774dd9e9fc81be3f3ed9398egdrtc_to_tod(struct rtc_t *rtc)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    todinfo_t tod;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * tod_year is base 1900 so this code needs to adjust the true year
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * retrieved from the rtc's century and year fields.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod.tod_year    = rtc->rtc_year + (rtc->rtc_century * 100) - 1900;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod.tod_month   = rtc->rtc_mon;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod.tod_day = rtc->rtc_dom;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod.tod_dow = rtc->rtc_dow;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod.tod_hour    = rtc->rtc_hrs;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod.tod_min = rtc->rtc_min;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod.tod_sec = rtc->rtc_sec;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (tod);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void
1c42de6d020629af774dd9e9fc81be3f3ed9398egdread_rtc(struct rtc_t *rtc)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_SEC;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_sec = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_ASEC;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_asec = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_MIN;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_min = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_AMIN;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_amin = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_HRS;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_hrs = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_AHRS;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_ahrs = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_DOW;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_dow = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_DOM;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_dom = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_MON;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_mon = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_YEAR;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_year = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_CENTURY;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_century = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /* Read date alarm */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_ADOM_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc->rtc_adom = (M5819P_DATA_REG) & RTC_ADOM;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Write the specified time into the clock chip.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Must be called with tod_lock held.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void
1c42de6d020629af774dd9e9fc81be3f3ed9398egdtodm5819p_rmc_set(timestruc_t ts)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    struct rtc_t    rtc;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    todinfo_t tod = utc_to_tod(ts.tv_sec);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    int year;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rmc_comm_msg_t request;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    dp_set_date_time_t set_time_msg;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ASSERT(MUTEX_HELD(&tod_lock));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /* tod_year is base 1900 so this code needs to adjust */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    year = 1900 + tod.tod_year;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_year    = year % 100;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_century = year / 100;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_mon = (uint8_t)tod.tod_month;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_dom = (uint8_t)tod.tod_day;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_dow = (uint8_t)tod.tod_dow;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_hrs = (uint8_t)tod.tod_hour;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_min = (uint8_t)tod.tod_min;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_sec = (uint8_t)tod.tod_sec;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    write_rtc_time(&rtc);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    set_time_msg.year   = year - 1900;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    set_time_msg.month  = tod.tod_month - 1;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    set_time_msg.day    = tod.tod_day;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    set_time_msg.hour   = tod.tod_hour;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    set_time_msg.minute = tod.tod_min;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    set_time_msg.second = tod.tod_sec;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    request.msg_type = DP_SET_DATE_TIME;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    request.msg_len = sizeof (set_time_msg);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    request.msg_buf = (caddr_t)&set_time_msg;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    (void) rmc_comm_request_nowait(&request, 0);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdvoid
1c42de6d020629af774dd9e9fc81be3f3ed9398egdwrite_rtc_time(struct rtc_t *rtc)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    uint8_t regb;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    int i;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * Freeze
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_B;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    regb = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = (regb | RTC_SET);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    /*
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * If an update cycle is in progress wait for the UIP flag to
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * clear.  If we write whilst UIP is still set there is a slight
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * but real possibility of corrupting the RTC date and time
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * registers.
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     *
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * The expected wait is one internal cycle of the chip.  We could
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * simply spin but this may hang a CPU if we were to have a broken
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * RTC chip where UIP is stuck, so we use a retry loop instead.
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * No critical section is needed here as the UIP flag will not be
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     * re-asserted until we clear RTC_SET.
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson     */
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    M5819P_ADDR_REG = RTC_A;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    for (i = 0; i < TODM5819_UIP_RETRY_THRESH; i++) {
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        if (!(M5819P_DATA_REG & RTC_UIP)) {
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson            break;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        }
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        drv_usecwait(TODM5819_UIP_WAIT_USEC);
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    }
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    if (i < TODM5819_UIP_RETRY_THRESH) {
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_SEC;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_sec;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_MIN;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_min;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_HRS;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_hrs;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_DOW;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_dow;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_DOM;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_dom;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_MON;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_mon;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_YEAR;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_year;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_ADDR_REG = RTC_CENTURY;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        M5819P_DATA_REG = rtc->rtc_century;
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    } else {
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson        cmn_err(CE_WARN, "todm5819p_rmc: Could not write the RTC\n");
8fc99e42676a23421c75e76660640f9765d693b1Trevor Thompson    }
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * Unfreeze
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_B;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = regb;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdvoid
1c42de6d020629af774dd9e9fc81be3f3ed9398egdwrite_rtc_alarm(struct rtc_t *rtc)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_ASEC;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = rtc->rtc_asec;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_AMIN;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = rtc->rtc_amin;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_AHRS;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = rtc->rtc_ahrs;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_ADOM_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = rtc->rtc_adom;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * program the rtc registers for alarm to go off at the specified time
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void
1c42de6d020629af774dd9e9fc81be3f3ed9398egdtodm5819p_rmc_set_power_alarm(timestruc_t ts)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    todinfo_t   tod;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    uint8_t     regb;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    struct rtc_t    rtc;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ASSERT(MUTEX_HELD(&tod_lock));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    tod = utc_to_tod(ts.tv_sec);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * disable alarms and clear AF flag by reading reg C
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_B;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    regb = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = regb & ~RTC_AIE;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_C;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    (void) M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_asec = (uint8_t)tod.tod_sec;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_amin = (uint8_t)tod.tod_min;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_ahrs = (uint8_t)tod.tod_hour;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    rtc.rtc_adom = (uint8_t)tod.tod_day;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    /*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     * Write alarm values and enable alarm
1c42de6d020629af774dd9e9fc81be3f3ed9398egd     */
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    write_rtc_alarm(&rtc);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_B;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = regb | RTC_AIE;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * clear alarm interrupt
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic void
1c42de6d020629af774dd9e9fc81be3f3ed9398egdtodm5819p_rmc_clear_power_alarm(void)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    uint8_t regb;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ASSERT(MUTEX_HELD(&tod_lock));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_B;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    regb = M5819P_DATA_REG;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_DATA_REG = regb & ~RTC_AIE;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Determine the cpu frequency by watching the TOD chip rollover twice.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * Cpu clock rate is determined by computing the ticks added (in tick register)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd * during one second interval on TOD.
1c42de6d020629af774dd9e9fc81be3f3ed9398egd */
1c42de6d020629af774dd9e9fc81be3f3ed9398egduint64_t
1c42de6d020629af774dd9e9fc81be3f3ed9398egdtodm5819p_rmc_get_cpufrequency(void)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ASSERT(MUTEX_HELD(&tod_lock));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    M5819P_ADDR_REG = RTC_SEC;
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (find_cpufrequency(v_rtc_data_reg));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egd/*ARGSUSED*/
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic uint_t
1c42de6d020629af774dd9e9fc81be3f3ed9398egdtodm5819p_rmc_set_watchdog_timer(uint_t timeoutval)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ASSERT(MUTEX_HELD(&tod_lock));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (0);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}
1c42de6d020629af774dd9e9fc81be3f3ed9398egd
1c42de6d020629af774dd9e9fc81be3f3ed9398egdstatic uint_t
1c42de6d020629af774dd9e9fc81be3f3ed9398egdtodm5819p_rmc_clear_watchdog_timer(void)
1c42de6d020629af774dd9e9fc81be3f3ed9398egd{
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    ASSERT(MUTEX_HELD(&tod_lock));
1c42de6d020629af774dd9e9fc81be3f3ed9398egd    return (0);
1c42de6d020629af774dd9e9fc81be3f3ed9398egd}