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, MERCHANTABILITY
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("$FreeBSD$");
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 * It's also required for any AH_DEBUG checks in here, eg the
47 * module dependencies.
48 */
49 #include "opt_ah.h"
50 #include "opt_wlan.h"
51
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/sysctl.h>
55 #include <sys/mbuf.h>
56 #include <sys/malloc.h>
57 #include <sys/lock.h>
58 #include <sys/kernel.h>
59 #include <sys/socket.h>
60 #include <sys/sockio.h>
61 #include <sys/errno.h>
62 #include <sys/callout.h>
63 #include <sys/bus.h>
64 #include <sys/endian.h>
65 #include <sys/kthread.h>
66 #include <sys/taskqueue.h>
67 #include <sys/caps.h>
68 #include <sys/module.h>
69 #include <sys/ktr.h>
70
71 #if !defined(__DragonFly__)
72 #include <sys/smp.h> /* for mp_ncpus */
73 #include <machine/bus.h>
74 #endif
75
76 #include <net/if.h>
77 #include <net/if_var.h>
78 #include <net/if_dl.h>
79 #include <net/if_media.h>
80 #include <net/if_types.h>
81 #include <net/if_arp.h>
82 #include <net/ethernet.h>
83 #include <net/if_llc.h>
84
85 #include <netproto/802_11/ieee80211_var.h>
86 #include <netproto/802_11/ieee80211_regdomain.h>
87 #ifdef IEEE80211_SUPPORT_SUPERG
88 #include <netproto/802_11/ieee80211_superg.h>
89 #endif
90 #ifdef IEEE80211_SUPPORT_TDMA
91 #include <netproto/802_11/ieee80211_tdma.h>
92 #endif
93
94 #include <net/bpf.h>
95
96 #ifdef INET
97 #include <netinet/in.h>
98 #include <netinet/if_ether.h>
99 #endif
100
101 #include <dev/netif/ath/ath/if_athvar.h>
102 #include <dev/netif/ath/ath_hal/ah_devid.h> /* XXX for softled */
103 #include <dev/netif/ath/ath_hal/ah_diagcodes.h>
104
105 #include <dev/netif/ath/ath/if_ath_debug.h>
106 #include <dev/netif/ath/ath/if_ath_misc.h>
107 #include <dev/netif/ath/ath/if_ath_btcoex.h>
108 #include <dev/netif/ath/ath/if_ath_spectral.h>
109 #include <dev/netif/ath/ath/if_ath_lna_div.h>
110 #include <dev/netif/ath/ath/if_athdfs.h>
111
112 #ifdef IEEE80211_SUPPORT_TDMA
113 #include <dev/netif/ath/ath/if_ath_tdma.h>
114 #endif
115
116 #include <dev/netif/ath/ath/if_ath_ioctl.h>
117
118 /*
119 * ioctl() related pieces.
120 *
121 * Some subsystems (eg spectral, dfs) have their own ioctl method which
122 * we call.
123 */
124
125 /*
126 * Fetch the rate control statistics for the given node.
127 */
128 static int
ath_ioctl_ratestats(struct ath_softc * sc,struct ath_rateioctl * rs)129 ath_ioctl_ratestats(struct ath_softc *sc, struct ath_rateioctl *rs)
130 {
131 struct ath_node *an;
132 struct ieee80211com *ic = &sc->sc_ic;
133 struct ieee80211_node *ni;
134 int error = 0;
135
136 /* Perform a lookup on the given node */
137 ni = ieee80211_find_node(&ic->ic_sta, rs->is_u.macaddr);
138 if (ni == NULL) {
139 error = EINVAL;
140 goto bad;
141 }
142
143 /* Lock the ath_node */
144 an = ATH_NODE(ni);
145 ATH_NODE_LOCK(an);
146
147 /* Fetch the rate control stats for this node */
148 error = ath_rate_fetch_node_stats(sc, an, rs);
149
150 /* No matter what happens here, just drop through */
151
152 /* Unlock the ath_node */
153 ATH_NODE_UNLOCK(an);
154
155 /* Unref the node */
156 ieee80211_node_decref(ni);
157
158 bad:
159 return (error);
160 }
161
162 #ifdef ATH_DIAGAPI
163 /*
164 * Diagnostic interface to the HAL. This is used by various
165 * tools to do things like retrieve register contents for
166 * debugging. The mechanism is intentionally opaque so that
167 * it can change frequently w/o concern for compatibility.
168 */
169 static int
ath_ioctl_diag(struct ath_softc * sc,struct ath_diag * ad)170 ath_ioctl_diag(struct ath_softc *sc, struct ath_diag *ad)
171 {
172 struct ath_hal *ah = sc->sc_ah;
173 u_int id = ad->ad_id & ATH_DIAG_ID;
174 void *indata = NULL;
175 void *outdata = NULL;
176 u_int32_t insize = ad->ad_in_size;
177 u_int32_t outsize = ad->ad_out_size;
178 int error = 0;
179
180 if (ad->ad_id & ATH_DIAG_IN) {
181 /*
182 * Copy in data.
183 */
184 indata = kmalloc(insize, M_TEMP, M_NOWAIT);
185 if (indata == NULL) {
186 error = ENOMEM;
187 goto bad;
188 }
189 error = copyin(ad->ad_in_data, indata, insize);
190 if (error)
191 goto bad;
192 }
193 if (ad->ad_id & ATH_DIAG_DYN) {
194 /*
195 * Allocate a buffer for the results (otherwise the HAL
196 * returns a pointer to a buffer where we can read the
197 * results). Note that we depend on the HAL leaving this
198 * pointer for us to use below in reclaiming the buffer;
199 * may want to be more defensive.
200 */
201 outdata = kmalloc(outsize, M_TEMP, M_NOWAIT);
202 if (outdata == NULL) {
203 error = ENOMEM;
204 goto bad;
205 }
206 }
207
208
209 ATH_LOCK(sc);
210 if (id != HAL_DIAG_REGS)
211 ath_power_set_power_state(sc, HAL_PM_AWAKE);
212 ATH_UNLOCK(sc);
213
214 if (ath_hal_getdiagstate(ah, id, indata, insize, &outdata, &outsize)) {
215 if (outsize < ad->ad_out_size)
216 ad->ad_out_size = outsize;
217 if (outdata != NULL)
218 error = copyout(outdata, ad->ad_out_data,
219 ad->ad_out_size);
220 } else {
221 error = EINVAL;
222 }
223
224 ATH_LOCK(sc);
225 if (id != HAL_DIAG_REGS)
226 ath_power_restore_power_state(sc);
227 ATH_UNLOCK(sc);
228
229 bad:
230 if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
231 kfree(indata, M_TEMP);
232 if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
233 kfree(outdata, M_TEMP);
234 return error;
235 }
236 #endif /* ATH_DIAGAPI */
237
238 int
ath_ioctl(struct ieee80211com * ic,u_long cmd,void * data)239 ath_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
240 {
241 struct ifreq *ifr = data;
242 struct ath_softc *sc = ic->ic_softc;
243
244 switch (cmd) {
245 case SIOCGATHSTATS: {
246 struct ieee80211vap *vap;
247 struct ifnet *ifp;
248 const HAL_RATE_TABLE *rt;
249
250 /* NB: embed these numbers to get a consistent view */
251 sc->sc_stats.ast_tx_packets = 0;
252 sc->sc_stats.ast_rx_packets = 0;
253 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
254 ifp = vap->iv_ifp;
255 #if defined(__DragonFly__)
256 uint64_t v;
257 IFNET_STAT_GET(ifp, opackets, v);
258 sc->sc_stats.ast_tx_packets += v;
259 IFNET_STAT_GET(ifp, ipackets, v);
260 sc->sc_stats.ast_rx_packets += v;
261 #else
262 sc->sc_stats.ast_tx_packets += ifp->if_get_counter(ifp,
263 IFCOUNTER_OPACKETS);
264 sc->sc_stats.ast_rx_packets += ifp->if_get_counter(ifp,
265 IFCOUNTER_IPACKETS);
266 #endif
267 }
268 sc->sc_stats.ast_tx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgtxrssi);
269 sc->sc_stats.ast_rx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgrssi);
270 #ifdef IEEE80211_SUPPORT_TDMA
271 sc->sc_stats.ast_tdma_tsfadjp = TDMA_AVG(sc->sc_avgtsfdeltap);
272 sc->sc_stats.ast_tdma_tsfadjm = TDMA_AVG(sc->sc_avgtsfdeltam);
273 #endif
274 rt = sc->sc_currates;
275 sc->sc_stats.ast_tx_rate =
276 rt->info[sc->sc_txrix].dot11Rate &~ IEEE80211_RATE_BASIC;
277 if (rt->info[sc->sc_txrix].phy & IEEE80211_T_HT)
278 sc->sc_stats.ast_tx_rate |= IEEE80211_RATE_MCS;
279 return copyout(&sc->sc_stats,
280 ifr->ifr_data, sizeof (sc->sc_stats));
281 }
282 case SIOCGATHAGSTATS:
283 return copyout(&sc->sc_aggr_stats,
284 ifr->ifr_data, sizeof (sc->sc_aggr_stats));
285 case SIOCZATHSTATS: {
286 int error;
287
288 error = caps_priv_check_self(SYSCAP_NODRIVER);
289 if (error == 0) {
290 memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
291 memset(&sc->sc_aggr_stats, 0,
292 sizeof(sc->sc_aggr_stats));
293 memset(&sc->sc_intr_stats, 0,
294 sizeof(sc->sc_intr_stats));
295 }
296 return (error);
297 }
298 #ifdef ATH_DIAGAPI
299 case SIOCGATHDIAG:
300 return (ath_ioctl_diag(sc, data));
301 case SIOCGATHPHYERR:
302 return (ath_ioctl_phyerr(sc, data));
303 #endif
304 case SIOCGATHSPECTRAL:
305 return (ath_ioctl_spectral(sc, data));
306 case SIOCGATHNODERATESTATS:
307 return (ath_ioctl_ratestats(sc, data));
308 default:
309 /*
310 * This signals the net80211 layer that we didn't handle this
311 * ioctl.
312 */
313 return (ENOTTY);
314 }
315 }
316
317