2 * Copyright (c) 2011 Adrian Chadd, Xenion Pty Ltd
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10 * without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
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14 * similar Disclaimer requirement for further binary redistribution.
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31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 * This implements an empty DFS module.
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/sysctl.h>
43 #include <sys/kernel.h>
45 #include <sys/mutex.h>
46 #include <sys/errno.h>
48 #include <machine/bus.h>
49 #include <machine/resource.h>
52 #include <sys/socket.h>
55 #include <net/if_media.h>
56 #include <net/if_arp.h>
57 #include <net/ethernet.h> /* XXX for ether_sprintf */
59 #include <net80211/ieee80211_var.h>
64 #include <netinet/in.h>
65 #include <netinet/if_ether.h>
68 #include <dev/ath/if_athvar.h>
69 #include <dev/ath/if_athdfs.h>
71 #include <dev/ath/ath_hal/ah_desc.h>
74 * Methods which are required
78 * Attach DFS to the given interface
81 ath_dfs_attach(struct ath_softc *sc)
87 * Detach DFS from the given interface
90 ath_dfs_detach(struct ath_softc *sc)
99 ath_dfs_radar_enable(struct ath_softc *sc, struct ieee80211_channel *chan)
101 /* Check if the current channel is radar-enabled */
102 if (! IEEE80211_IS_CHAN_DFS(chan))
107 * Process DFS related PHY errors
110 ath_dfs_process_phy_err(struct ath_softc *sc, const char *buf,
111 uint64_t tsf, struct ath_rx_status *rxstat)
117 * Process the radar events and determine whether a DFS event has occured.
119 * This is designed to run outside of the RX processing path.
120 * The RX path will call ath_dfs_tasklet_needed() to see whether
121 * the task/callback running this routine needs to be called.
124 ath_dfs_process_radar_event(struct ath_softc *sc,
125 struct ieee80211_channel *chan)
131 * Determine whether the the DFS check task needs to be queued.
133 * This is called in the RX task when the current batch of packets
134 * have been received. It will return whether there are any radar
135 * events for ath_dfs_process_radar_event() to handle.
138 ath_dfs_tasklet_needed(struct ath_softc *sc, struct ieee80211_channel *chan)
144 * Handle ioctl requests from the diagnostic interface.
146 * The initial part of this code resembles ath_ioctl_diag();
147 * it's likely a good idea to reduce duplication between
148 * these two routines.
151 ath_ioctl_phyerr(struct ath_softc *sc, struct ath_diag *ad)
153 unsigned int id = ad->ad_id & ATH_DIAG_ID;
155 void *outdata = NULL;
156 u_int32_t insize = ad->ad_in_size;
157 u_int32_t outsize = ad->ad_out_size;
159 HAL_PHYERR_PARAM peout;
160 HAL_PHYERR_PARAM *pe;
162 if (ad->ad_id & ATH_DIAG_IN) {
166 indata = malloc(insize, M_TEMP, M_NOWAIT);
167 if (indata == NULL) {
171 error = copyin(ad->ad_in_data, indata, insize);
175 if (ad->ad_id & ATH_DIAG_DYN) {
177 * Allocate a buffer for the results (otherwise the HAL
178 * returns a pointer to a buffer where we can read the
179 * results). Note that we depend on the HAL leaving this
180 * pointer for us to use below in reclaiming the buffer;
181 * may want to be more defensive.
183 outdata = malloc(outsize, M_TEMP, M_NOWAIT);
184 if (outdata == NULL) {
191 if (insize < sizeof(HAL_PHYERR_PARAM)) {
195 pe = (HAL_PHYERR_PARAM *) indata;
196 ath_hal_enabledfs(sc->sc_ah, pe);
199 memset(&peout, 0, sizeof(peout));
200 outsize = sizeof(HAL_PHYERR_PARAM);
201 ath_hal_getdfsthresh(sc->sc_ah, &peout);
202 pe = (HAL_PHYERR_PARAM *) outdata;
203 memcpy(pe, &peout, sizeof(*pe));
208 if (outsize < ad->ad_out_size)
209 ad->ad_out_size = outsize;
210 if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size))
213 if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
214 free(indata, M_TEMP);
215 if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
216 free(outdata, M_TEMP);
221 * Get the current DFS thresholds from the HAL
224 ath_dfs_get_thresholds(struct ath_softc *sc, HAL_PHYERR_PARAM *param)
226 ath_hal_getdfsthresh(sc->sc_ah, param);