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/*
32 * Driver for the Atheros Wireless LAN controller.
33 *
34 * This software is derived from work of Atsushi Onoe; his contribution
35 * is greatly appreciated.
36 */
37
38#include "opt_inet.h"
39#include "opt_ath.h"
40/*
41 * This is needed for register operations which are performed
42 * by the driver - eg, calls to ath_hal_gettsf32().
43 *
44 * It's also required for any AH_DEBUG checks in here, eg the
45 * module dependencies.
46 */
47#include "opt_ah.h"
48#include "opt_wlan.h"
49
50#include <sys/param.h>
51#include <sys/systm.h>
52#include <sys/sysctl.h>
53#include <sys/mbuf.h>
54#include <sys/malloc.h>
55#include <sys/lock.h>
56#include <sys/mutex.h>
57#include <sys/kernel.h>
58#include <sys/socket.h>
59#include <sys/sockio.h>
60#include <sys/errno.h>
61#include <sys/callout.h>
62#include <sys/bus.h>
63#include <sys/endian.h>
64#include <sys/kthread.h>
65#include <sys/taskqueue.h>
66#include <sys/priv.h>
67#include <sys/module.h>
68#include <sys/ktr.h>
69#include <sys/smp.h>	/* for mp_ncpus */
70
71#include <machine/bus.h>
72
73#include <net/if.h>
74#include <net/if_var.h>
75#include <net/if_dl.h>
76#include <net/if_media.h>
77#include <net/if_types.h>
78#include <net/if_arp.h>
79#include <net/ethernet.h>
80#include <net/if_llc.h>
81
82#include <net80211/ieee80211_var.h>
83#include <net80211/ieee80211_regdomain.h>
84#ifdef IEEE80211_SUPPORT_SUPERG
85#include <net80211/ieee80211_superg.h>
86#endif
87#ifdef IEEE80211_SUPPORT_TDMA
88#include <net80211/ieee80211_tdma.h>
89#endif
90
91#include <net/bpf.h>
92
93#ifdef INET
94#include <netinet/in.h>
95#include <netinet/if_ether.h>
96#endif
97
98#include <dev/ath/if_athvar.h>
99#include <dev/ath/ath_hal/ah_devid.h>		/* XXX for softled */
100#include <dev/ath/ath_hal/ah_diagcodes.h>
101
102#include <dev/ath/if_ath_debug.h>
103#include <dev/ath/if_ath_misc.h>
104#include <dev/ath/if_ath_btcoex.h>
105#include <dev/ath/if_ath_spectral.h>
106#include <dev/ath/if_ath_lna_div.h>
107#include <dev/ath/if_athdfs.h>
108
109#ifdef	IEEE80211_SUPPORT_TDMA
110#include <dev/ath/if_ath_tdma.h>
111#endif
112
113#include <dev/ath/if_ath_ioctl.h>
114
115/*
116 * ioctl() related pieces.
117 *
118 * Some subsystems (eg spectral, dfs) have their own ioctl method which
119 * we call.
120 */
121
122/*
123 * Fetch the rate control statistics for the given node.
124 */
125static int
126ath_ioctl_ratestats(struct ath_softc *sc, struct ath_rateioctl *rs)
127{
128	struct ath_node *an;
129	struct ieee80211com *ic = &sc->sc_ic;
130	struct ieee80211_node *ni;
131	int error = 0;
132
133	/* Perform a lookup on the given node */
134	ni = ieee80211_find_node(&ic->ic_sta, rs->is_u.macaddr);
135	if (ni == NULL) {
136		error = EINVAL;
137		goto bad;
138	}
139
140	/* Lock the ath_node */
141	an = ATH_NODE(ni);
142	ATH_NODE_LOCK(an);
143
144	/* Fetch the rate control stats for this node */
145	error = ath_rate_fetch_node_stats(sc, an, rs);
146
147	/* No matter what happens here, just drop through */
148
149	/* Unlock the ath_node */
150	ATH_NODE_UNLOCK(an);
151
152	/* Unref the node */
153	ieee80211_node_decref(ni);
154
155bad:
156	return (error);
157}
158
159#ifdef ATH_DIAGAPI
160/*
161 * Diagnostic interface to the HAL.  This is used by various
162 * tools to do things like retrieve register contents for
163 * debugging.  The mechanism is intentionally opaque so that
164 * it can change frequently w/o concern for compatibility.
165 */
166static int
167ath_ioctl_diag(struct ath_softc *sc, struct ath_diag *ad)
168{
169	struct ath_hal *ah = sc->sc_ah;
170	u_int id = ad->ad_id & ATH_DIAG_ID;
171	void *indata = NULL;
172	void *outdata = NULL;
173	u_int32_t insize = ad->ad_in_size;
174	u_int32_t outsize = ad->ad_out_size;
175	int error = 0;
176
177	if (ad->ad_id & ATH_DIAG_IN) {
178		/*
179		 * Copy in data.
180		 */
181		indata = malloc(insize, M_TEMP, M_NOWAIT);
182		if (indata == NULL) {
183			error = ENOMEM;
184			goto bad;
185		}
186		error = copyin(ad->ad_in_data, indata, insize);
187		if (error)
188			goto bad;
189	}
190	if (ad->ad_id & ATH_DIAG_DYN) {
191		/*
192		 * Allocate a buffer for the results (otherwise the HAL
193		 * returns a pointer to a buffer where we can read the
194		 * results).  Note that we depend on the HAL leaving this
195		 * pointer for us to use below in reclaiming the buffer;
196		 * may want to be more defensive.
197		 */
198		outdata = malloc(outsize, M_TEMP, M_NOWAIT | M_ZERO);
199		if (outdata == NULL) {
200			error = ENOMEM;
201			goto bad;
202		}
203	}
204
205	ATH_LOCK(sc);
206	if (id != HAL_DIAG_REGS)
207		ath_power_set_power_state(sc, HAL_PM_AWAKE);
208	ATH_UNLOCK(sc);
209
210	if (ath_hal_getdiagstate(ah, id, indata, insize, &outdata, &outsize)) {
211		if (outsize < ad->ad_out_size)
212			ad->ad_out_size = outsize;
213		if (outdata != NULL)
214			error = copyout(outdata, ad->ad_out_data,
215					ad->ad_out_size);
216	} else {
217		error = EINVAL;
218	}
219
220	ATH_LOCK(sc);
221	if (id != HAL_DIAG_REGS)
222		ath_power_restore_power_state(sc);
223	ATH_UNLOCK(sc);
224
225bad:
226	if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
227		free(indata, M_TEMP);
228	if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
229		free(outdata, M_TEMP);
230	return error;
231}
232#endif /* ATH_DIAGAPI */
233
234int
235ath_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
236{
237	struct ifreq *ifr = data;
238	struct ath_softc *sc = ic->ic_softc;
239
240	switch (cmd) {
241	case SIOCGATHSTATS: {
242		struct ieee80211vap *vap;
243		if_t ifp;
244		const HAL_RATE_TABLE *rt;
245
246		/* NB: embed these numbers to get a consistent view */
247		sc->sc_stats.ast_tx_packets = 0;
248		sc->sc_stats.ast_rx_packets = 0;
249		TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
250			ifp = vap->iv_ifp;
251			sc->sc_stats.ast_tx_packets += if_getcounter(ifp,
252			    IFCOUNTER_OPACKETS);
253			sc->sc_stats.ast_rx_packets += if_getcounter(ifp,
254			    IFCOUNTER_IPACKETS);
255		}
256		sc->sc_stats.ast_tx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgtxrssi);
257		sc->sc_stats.ast_rx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgrssi);
258#ifdef IEEE80211_SUPPORT_TDMA
259		sc->sc_stats.ast_tdma_tsfadjp = TDMA_AVG(sc->sc_avgtsfdeltap);
260		sc->sc_stats.ast_tdma_tsfadjm = TDMA_AVG(sc->sc_avgtsfdeltam);
261#endif
262		rt = sc->sc_currates;
263		sc->sc_stats.ast_tx_rate =
264		    rt->info[sc->sc_txrix].dot11Rate &~ IEEE80211_RATE_BASIC;
265		if (rt->info[sc->sc_txrix].phy & IEEE80211_T_HT)
266			sc->sc_stats.ast_tx_rate |= IEEE80211_RATE_MCS;
267		return copyout(&sc->sc_stats, ifr_data_get_ptr(ifr),
268		    sizeof (sc->sc_stats));
269	}
270	case SIOCGATHAGSTATS:
271		return copyout(&sc->sc_aggr_stats, ifr_data_get_ptr(ifr),
272		    sizeof (sc->sc_aggr_stats));
273	case SIOCZATHSTATS: {
274		int error;
275
276		error = priv_check(curthread, PRIV_DRIVER);
277		if (error == 0) {
278			memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
279			memset(&sc->sc_aggr_stats, 0,
280			    sizeof(sc->sc_aggr_stats));
281			memset(&sc->sc_intr_stats, 0,
282			    sizeof(sc->sc_intr_stats));
283		}
284		return (error);
285	}
286#ifdef ATH_DIAGAPI
287	case SIOCGATHDIAG:
288		return (ath_ioctl_diag(sc, data));
289	case SIOCGATHPHYERR:
290		return (ath_ioctl_phyerr(sc, data));
291#endif
292	case SIOCGATHSPECTRAL:
293		return (ath_ioctl_spectral(sc, data));
294	case SIOCGATHNODERATESTATS:
295		return (ath_ioctl_ratestats(sc, data));
296	case SIOCGATHBTCOEX:
297		return (ath_btcoex_ioctl(sc, data));
298	default:
299		/*
300		 * This signals the net80211 layer that we didn't handle this
301		 * ioctl.
302		 */
303		return (ENOTTY);
304	}
305}
306