ath - Basic re-port, base code compile
[dragonfly.git] / sys / dev / netif / ath / ath_dfs / null / dfs_null.c
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1/*-
2 * Copyright (c) 2011 Adrian Chadd, Xenion Pty Ltd
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 * $FreeBSD$
30 */
31#include <sys/cdefs.h>
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32
33/*
34 * This implements an empty DFS module.
35 */
36#include "opt_ath.h"
37#include "opt_inet.h"
38#include "opt_wlan.h"
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/sysctl.h>
43#include <sys/kernel.h>
44#include <sys/lock.h>
45#include <sys/malloc.h>
46#include <sys/mutex.h>
47#include <sys/errno.h>
572ff6f6 48#include <sys/bus.h>
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49#include <sys/socket.h>
50
51#include <net/if.h>
52#include <net/if_var.h>
53#include <net/if_media.h>
54#include <net/if_arp.h>
55#include <net/ethernet.h> /* XXX for ether_sprintf */
56
5cd80a8c 57#include <netproto/802_11/ieee80211_var.h>
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58
59#include <net/bpf.h>
60
61#ifdef INET
62#include <netinet/in.h>
63#include <netinet/if_ether.h>
64#endif
65
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66#include <dev/netif/ath/ath/if_athvar.h>
67#include <dev/netif/ath/ath/if_athdfs.h>
572ff6f6 68
5cd80a8c 69#include <dev/netif/ath/ath_hal/ah_desc.h>
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70
71/*
72 * Methods which are required
73 */
74
75/*
76 * Attach DFS to the given interface
77 */
78int
79ath_dfs_attach(struct ath_softc *sc)
80{
81 return (1);
82}
83
84/*
85 * Detach DFS from the given interface
86 */
87int
88ath_dfs_detach(struct ath_softc *sc)
89{
90 return (1);
91}
92
93/*
94 * Enable radar check. Return 1 if the driver should
95 * enable radar PHY errors, or 0 if not.
96 */
97int
98ath_dfs_radar_enable(struct ath_softc *sc, struct ieee80211_channel *chan)
99{
100#if 0
101 HAL_PHYERR_PARAM pe;
102
103 /* Check if the hardware supports radar reporting */
104 /* XXX TODO: migrate HAL_CAP_RADAR/HAL_CAP_AR to somewhere public! */
105 if (ath_hal_getcapability(sc->sc_ah,
106 HAL_CAP_PHYDIAG, 0, NULL) != HAL_OK)
107 return (0);
108
109 /* Check if the current channel is radar-enabled */
110 if (! IEEE80211_IS_CHAN_DFS(chan))
111 return (0);
112
113 /* Fetch the default parameters */
114 memset(&pe, '\0', sizeof(pe));
115 if (! ath_hal_getdfsdefaultthresh(sc->sc_ah, &pe))
116 return (0);
117
118 /* Enable radar PHY error reporting */
119 sc->sc_dodfs = 1;
120
121 /* Tell the hardware to enable radar reporting */
122 pe.pe_enabled = 1;
123
124 /* Flip on extension channel events only if doing HT40 */
125 if (IEEE80211_IS_CHAN_HT40(chan))
126 pe.pe_extchannel = 1;
127 else
128 pe.pe_extchannel = 0;
129
130 ath_hal_enabledfs(sc->sc_ah, &pe);
131
132 /*
133 * Disable strong signal fast diversity - needed for
134 * AR5212 and similar PHYs for reliable short pulse
135 * duration.
136 */
137 (void) ath_hal_setcapability(sc->sc_ah, HAL_CAP_DIVERSITY, 2, 0, NULL);
138
139 return (1);
140#else
141 return (0);
142#endif
143}
144
145/*
146 * Explicity disable radar reporting.
147 *
148 * Return 0 if it was disabled, < 0 on error.
149 */
150int
151ath_dfs_radar_disable(struct ath_softc *sc)
152{
153#if 0
154 HAL_PHYERR_PARAM pe;
155
156 (void) ath_hal_getdfsthresh(sc->sc_ah, &pe);
157 pe.pe_enabled = 0;
158 (void) ath_hal_enabledfs(sc->sc_ah, &pe);
159 return (0);
160#else
161 return (0);
162#endif
163}
164
165/*
166 * Process DFS related PHY errors
167 *
168 * The mbuf is not "ours" and if we want a copy, we have
169 * to take a copy. It'll be freed after this function returns.
170 */
171void
172ath_dfs_process_phy_err(struct ath_softc *sc, struct mbuf *m,
173 uint64_t tsf, struct ath_rx_status *rxstat)
174{
175
176}
177
178/*
179 * Process the radar events and determine whether a DFS event has occured.
180 *
181 * This is designed to run outside of the RX processing path.
182 * The RX path will call ath_dfs_tasklet_needed() to see whether
183 * the task/callback running this routine needs to be called.
184 */
185int
186ath_dfs_process_radar_event(struct ath_softc *sc,
187 struct ieee80211_channel *chan)
188{
189 return (0);
190}
191
192/*
193 * Determine whether the DFS check task needs to be queued.
194 *
195 * This is called in the RX task when the current batch of packets
196 * have been received. It will return whether there are any radar
197 * events for ath_dfs_process_radar_event() to handle.
198 */
199int
200ath_dfs_tasklet_needed(struct ath_softc *sc, struct ieee80211_channel *chan)
201{
202 return (0);
203}
204
205/*
206 * Handle ioctl requests from the diagnostic interface.
207 *
208 * The initial part of this code resembles ath_ioctl_diag();
209 * it's likely a good idea to reduce duplication between
210 * these two routines.
211 */
212int
213ath_ioctl_phyerr(struct ath_softc *sc, struct ath_diag *ad)
214{
215 unsigned int id = ad->ad_id & ATH_DIAG_ID;
216 void *indata = NULL;
217 void *outdata = NULL;
218 u_int32_t insize = ad->ad_in_size;
219 u_int32_t outsize = ad->ad_out_size;
220 int error = 0;
221 HAL_PHYERR_PARAM peout;
222 HAL_PHYERR_PARAM *pe;
223
224 if (ad->ad_id & ATH_DIAG_IN) {
225 /*
226 * Copy in data.
227 */
3133c5e3 228 indata = kmalloc(insize, M_TEMP, M_INTWAIT);
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229 if (indata == NULL) {
230 error = ENOMEM;
231 goto bad;
232 }
233 error = copyin(ad->ad_in_data, indata, insize);
234 if (error)
235 goto bad;
236 }
237 if (ad->ad_id & ATH_DIAG_DYN) {
238 /*
239 * Allocate a buffer for the results (otherwise the HAL
240 * returns a pointer to a buffer where we can read the
241 * results). Note that we depend on the HAL leaving this
242 * pointer for us to use below in reclaiming the buffer;
243 * may want to be more defensive.
244 */
3133c5e3 245 outdata = kmalloc(outsize, M_TEMP, M_INTWAIT);
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246 if (outdata == NULL) {
247 error = ENOMEM;
248 goto bad;
249 }
250 }
251 switch (id) {
252 case DFS_SET_THRESH:
253 if (insize < sizeof(HAL_PHYERR_PARAM)) {
254 error = EINVAL;
255 break;
256 }
257 pe = (HAL_PHYERR_PARAM *) indata;
258 ath_hal_enabledfs(sc->sc_ah, pe);
259 break;
260 case DFS_GET_THRESH:
261 memset(&peout, 0, sizeof(peout));
262 outsize = sizeof(HAL_PHYERR_PARAM);
263 ath_hal_getdfsthresh(sc->sc_ah, &peout);
264 pe = (HAL_PHYERR_PARAM *) outdata;
265 memcpy(pe, &peout, sizeof(*pe));
266 break;
267 default:
268 error = EINVAL;
269 }
270 if (outsize < ad->ad_out_size)
271 ad->ad_out_size = outsize;
272 if (outdata && copyout(outdata, ad->ad_out_data, ad->ad_out_size))
273 error = EFAULT;
274bad:
275 if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
3133c5e3 276 kfree(indata, M_TEMP);
572ff6f6 277 if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
3133c5e3 278 kfree(outdata, M_TEMP);
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279 return (error);
280}
281
282/*
283 * Get the current DFS thresholds from the HAL
284 */
285int
286ath_dfs_get_thresholds(struct ath_softc *sc, HAL_PHYERR_PARAM *param)
287{
288 ath_hal_getdfsthresh(sc->sc_ah, param);
289 return (1);
290}