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 */
125 static int
ath_ioctl_ratestats(struct ath_softc * sc,struct ath_rateioctl * rs)126 ath_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
155 bad:
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 */
166 static int
ath_ioctl_diag(struct ath_softc * sc,struct ath_diag * ad)167 ath_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
225 bad:
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
234 int
ath_ioctl(struct ieee80211com * ic,u_long cmd,void * data)235 ath_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