if_ath_led.c revision 331722 
1/*-
2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer,
10 *    without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 *    redistribution must be conditioned upon including a substantially
14 *    similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: stable/11/sys/dev/ath/if_ath_led.c 331722 2018-03-29 02:50:57Z eadler $");
32
33/*
34 * Driver for the Atheros Wireless LAN controller.
35 *
36 * This software is derived from work of Atsushi Onoe; his contribution
37 * is greatly appreciated.
38 */
39
40#include "opt_inet.h"
41#include "opt_ath.h"
42/*
43 * This is needed for register operations which are performed
44 * by the driver - eg, calls to ath_hal_gettsf32().
45 */
46#include "opt_ah.h"
47#include "opt_wlan.h"
48
49#include <sys/param.h>
50#include <sys/systm.h>
51#include <sys/sysctl.h>
52#include <sys/mbuf.h>
53#include <sys/malloc.h>
54#include <sys/lock.h>
55#include <sys/mutex.h>
56#include <sys/kernel.h>
57#include <sys/socket.h>
58#include <sys/sockio.h>
59#include <sys/errno.h>
60#include <sys/callout.h>
61#include <sys/bus.h>
62#include <sys/endian.h>
63#include <sys/kthread.h>
64#include <sys/taskqueue.h>
65#include <sys/priv.h>
66#include <sys/module.h>
67#include <sys/ktr.h>
68#include <sys/smp.h>	/* for mp_ncpus */
69
70#include <machine/bus.h>
71
72#include <net/if.h>
73#include <net/if_dl.h>
74#include <net/if_media.h>
75#include <net/if_types.h>
76#include <net/if_arp.h>
77#include <net/ethernet.h>
78#include <net/if_llc.h>
79
80#include <net80211/ieee80211_var.h>
81#include <net80211/ieee80211_regdomain.h>
82#ifdef IEEE80211_SUPPORT_SUPERG
83#include <net80211/ieee80211_superg.h>
84#endif
85#ifdef IEEE80211_SUPPORT_TDMA
86#include <net80211/ieee80211_tdma.h>
87#endif
88
89#include <net/bpf.h>
90
91#ifdef INET
92#include <netinet/in.h>
93#include <netinet/if_ether.h>
94#endif
95
96#include <dev/ath/if_athvar.h>
97#include <dev/ath/ath_hal/ah_devid.h>		/* XXX for softled */
98#include <dev/ath/ath_hal/ah_diagcodes.h>
99
100#include <dev/ath/if_ath_debug.h>
101#include <dev/ath/if_ath_misc.h>
102
103#include <dev/ath/if_ath_led.h>
104
105/*
106 * Software LED driver routines.
107 */
108
109/*
110 * XXX TODO: move the LED sysctls here.
111 */
112
113
114/*
115 * Configure the hardware for software and LED blinking.
116 * The user may choose to configure part of each, depending upon the
117 * NIC being used.
118 *
119 * This requires the configuration to be set before this function
120 * is called.
121 */
122void
123ath_led_config(struct ath_softc *sc)
124{
125
126	ATH_LOCK(sc);
127	ath_power_set_power_state(sc, HAL_PM_AWAKE);
128	ATH_UNLOCK(sc);
129
130	/* Software LED blinking - GPIO controlled LED */
131	if (sc->sc_softled) {
132		ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_ledpin,
133		    HAL_GPIO_OUTPUT_MUX_AS_OUTPUT);
134		ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, !sc->sc_ledon);
135	}
136
137	/* Hardware LED blinking - MAC controlled LED */
138	if (sc->sc_hardled) {
139		/*
140		 * Only enable each LED if required.
141		 *
142		 * Some NICs only have one LED connected; others may
143		 * have GPIO1/GPIO2 connected to other hardware.
144		 */
145		if (sc->sc_led_pwr_pin > 0)
146			ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_led_pwr_pin,
147			    HAL_GPIO_OUTPUT_MUX_MAC_POWER_LED);
148		if (sc->sc_led_net_pin > 0)
149			ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_led_net_pin,
150			    HAL_GPIO_OUTPUT_MUX_MAC_NETWORK_LED);
151	}
152
153	ATH_LOCK(sc);
154	ath_power_restore_power_state(sc);
155	ATH_UNLOCK(sc);
156}
157
158static void
159ath_led_done(void *arg)
160{
161	struct ath_softc *sc = arg;
162
163	sc->sc_blinking = 0;
164}
165
166/*
167 * Turn the LED off: flip the pin and then set a timer so no
168 * update will happen for the specified duration.
169 */
170static void
171ath_led_off(void *arg)
172{
173	struct ath_softc *sc = arg;
174
175	ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, !sc->sc_ledon);
176	callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, ath_led_done, sc);
177}
178
179/*
180 * Blink the LED according to the specified on/off times.
181 */
182static void
183ath_led_blink(struct ath_softc *sc, int on, int off)
184{
185	DPRINTF(sc, ATH_DEBUG_LED, "%s: on %u off %u\n", __func__, on, off);
186	ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin, sc->sc_ledon);
187	sc->sc_blinking = 1;
188	sc->sc_ledoff = off;
189	callout_reset(&sc->sc_ledtimer, on, ath_led_off, sc);
190}
191
192void
193ath_led_event(struct ath_softc *sc, int rix)
194{
195	sc->sc_ledevent = ticks;	/* time of last event */
196	if (sc->sc_blinking)		/* don't interrupt active blink */
197		return;
198	ath_led_blink(sc, sc->sc_hwmap[rix].ledon, sc->sc_hwmap[rix].ledoff);
199}
200