FreeBSD/Linux Kernel Cross Reference
sys/dev/ath/if_ath_led.c

     /*-
      * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
      * All rights reserved.
      *
      * 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,
     *    without modification.
     * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
     *    redistribution must be conditioned upon including a substantially
     *    similar Disclaimer requirement for further binary redistribution.
     *
     * NO WARRANTY
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
     * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
     * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/11.2/sys/dev/ath/if_ath_led.c 331722 2018-03-29 02:50:57Z eadler $");
    
    /*
     * Driver for the Atheros Wireless LAN controller.
     *
     * This software is derived from work of Atsushi Onoe; his contribution
     * is greatly appreciated.
     */
    
    #include "opt_inet.h"
    #include "opt_ath.h"
    /*
     * This is needed for register operations which are performed
     * by the driver - eg, calls to ath_hal_gettsf32().
     */
    #include "opt_ah.h"
    #include "opt_wlan.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/sysctl.h>
    #include <sys/mbuf.h>
    #include <sys/malloc.h>
    #include <sys/lock.h>
    #include <sys/mutex.h>
    #include <sys/kernel.h>
    #include <sys/socket.h>
    #include <sys/sockio.h>
    #include <sys/errno.h>
    #include <sys/callout.h>
    #include <sys/bus.h>
    #include <sys/endian.h>
    #include <sys/kthread.h>
    #include <sys/taskqueue.h>
    #include <sys/priv.h>
    #include <sys/module.h>
    #include <sys/ktr.h>
    #include <sys/smp.h>    /* for mp_ncpus */
    
    #include <machine/bus.h>
    
    #include <net/if.h>
    #include <net/if_dl.h>
    #include <net/if_media.h>
    #include <net/if_types.h>
    #include <net/if_arp.h>
    #include <net/ethernet.h>
    #include <net/if_llc.h>
    
    #include <net80211/ieee80211_var.h>
    #include <net80211/ieee80211_regdomain.h>
    #ifdef IEEE80211_SUPPORT_SUPERG
    #include <net80211/ieee80211_superg.h>
    #endif
    #ifdef IEEE80211_SUPPORT_TDMA
    #include <net80211/ieee80211_tdma.h>
    #endif
    
    #include <net/bpf.h>
    
    #ifdef INET
    #include <netinet/in.h>
    #include <netinet/if_ether.h>
    #endif
    
    #include <dev/ath/if_athvar.h>
    #include <dev/ath/ath_hal/ah_devid.h>           /* XXX for softled */
    #include <dev/ath/ath_hal/ah_diagcodes.h>
    
   #include <dev/ath/if_ath_debug.h>
   #include <dev/ath/if_ath_misc.h>
   
   #include <dev/ath/if_ath_led.h>
   
   /*
    * Software LED driver routines.
    */
   
   /*
    * XXX TODO: move the LED sysctls here.
    */
   
   
   /*
    * Configure the hardware for software and LED blinking.
    * The user may choose to configure part of each, depending upon the
    * NIC being used.
    *
    * This requires the configuration to be set before this function
    * is called.
    */
   void
   ath_led_config(struct ath_softc *sc)
   {
   
           ATH_LOCK(sc);
           ath_power_set_power_state(sc, HAL_PM_AWAKE);
           ATH_UNLOCK(sc);
   
           /* Software LED blinking - GPIO controlled LED */
           if (sc->sc_softled) {
                   ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_ledpin,
                       HAL_GPIO_OUTPUT_MUX_AS_OUTPUT);
                   ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, !sc->sc_ledon);
           }
   
           /* Hardware LED blinking - MAC controlled LED */
           if (sc->sc_hardled) {
                   /*
                    * Only enable each LED if required.
                    *
                    * Some NICs only have one LED connected; others may
                    * have GPIO1/GPIO2 connected to other hardware.
                    */
                   if (sc->sc_led_pwr_pin > 0)
                           ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_led_pwr_pin,
                               HAL_GPIO_OUTPUT_MUX_MAC_POWER_LED);
                   if (sc->sc_led_net_pin > 0)
                           ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_led_net_pin,
                               HAL_GPIO_OUTPUT_MUX_MAC_NETWORK_LED);
           }
   
           ATH_LOCK(sc);
           ath_power_restore_power_state(sc);
           ATH_UNLOCK(sc);
   }
   
   static void
   ath_led_done(void *arg)
   {
           struct ath_softc *sc = arg;
   
           sc->sc_blinking = 0;
   }
   
   /*
    * Turn the LED off: flip the pin and then set a timer so no
    * update will happen for the specified duration.
    */
   static void
   ath_led_off(void *arg)
   {
           struct ath_softc *sc = arg;
   
           ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, !sc->sc_ledon);
           callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, ath_led_done, sc);
   }
   
   /*
    * Blink the LED according to the specified on/off times.
    */
   static void
   ath_led_blink(struct ath_softc *sc, int on, int off)
   {
           DPRINTF(sc, ATH_DEBUG_LED, "%s: on %u off %u\n", __func__, on, off);
           ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, sc->sc_ledon);
           sc->sc_blinking = 1;
           sc->sc_ledoff = off;
           callout_reset(&sc->sc_ledtimer, on, ath_led_off, sc);
   }
   
   void
   ath_led_event(struct ath_softc *sc, int rix)
   {
           sc->sc_ledevent = ticks;        /* time of last event */
           if (sc->sc_blinking)            /* don't interrupt active blink */
                   return;
           ath_led_blink(sc, sc->sc_hwmap[rix].ledon, sc->sc_hwmap[rix].ledoff);
   }

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