aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwlwifi/iwl-agn-rx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-rx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn-rx.c351
1 files changed, 0 insertions, 351 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c
deleted file mode 100644
index 9490eced1198..000000000000
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c
+++ /dev/null
@@ -1,351 +0,0 @@
1/******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
19 * USA
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/init.h>
33#include <linux/sched.h>
34
35#include "iwl-dev.h"
36#include "iwl-core.h"
37#include "iwl-calib.h"
38#include "iwl-sta.h"
39#include "iwl-io.h"
40#include "iwl-helpers.h"
41#include "iwl-agn-hw.h"
42#include "iwl-agn.h"
43
44void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
45 struct iwl_rx_mem_buffer *rxb)
46
47{
48 struct iwl_rx_packet *pkt = rxb_addr(rxb);
49 struct iwl_missed_beacon_notif *missed_beacon;
50
51 missed_beacon = &pkt->u.missed_beacon;
52 if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >
53 priv->missed_beacon_threshold) {
54 IWL_DEBUG_CALIB(priv,
55 "missed bcn cnsq %d totl %d rcd %d expctd %d\n",
56 le32_to_cpu(missed_beacon->consecutive_missed_beacons),
57 le32_to_cpu(missed_beacon->total_missed_becons),
58 le32_to_cpu(missed_beacon->num_recvd_beacons),
59 le32_to_cpu(missed_beacon->num_expected_beacons));
60 if (!test_bit(STATUS_SCANNING, &priv->status))
61 iwl_init_sensitivity(priv);
62 }
63}
64
65/* Calculate noise level, based on measurements during network silence just
66 * before arriving beacon. This measurement can be done only if we know
67 * exactly when to expect beacons, therefore only when we're associated. */
68static void iwl_rx_calc_noise(struct iwl_priv *priv)
69{
70 struct statistics_rx_non_phy *rx_info;
71 int num_active_rx = 0;
72 int total_silence = 0;
73 int bcn_silence_a, bcn_silence_b, bcn_silence_c;
74 int last_rx_noise;
75
76 if (priv->cfg->bt_statistics)
77 rx_info = &(priv->_agn.statistics_bt.rx.general.common);
78 else
79 rx_info = &(priv->_agn.statistics.rx.general);
80 bcn_silence_a =
81 le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
82 bcn_silence_b =
83 le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
84 bcn_silence_c =
85 le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
86
87 if (bcn_silence_a) {
88 total_silence += bcn_silence_a;
89 num_active_rx++;
90 }
91 if (bcn_silence_b) {
92 total_silence += bcn_silence_b;
93 num_active_rx++;
94 }
95 if (bcn_silence_c) {
96 total_silence += bcn_silence_c;
97 num_active_rx++;
98 }
99
100 /* Average among active antennas */
101 if (num_active_rx)
102 last_rx_noise = (total_silence / num_active_rx) - 107;
103 else
104 last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
105
106 IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",
107 bcn_silence_a, bcn_silence_b, bcn_silence_c,
108 last_rx_noise);
109}
110
111#ifdef CONFIG_IWLWIFI_DEBUGFS
112/*
113 * based on the assumption of all statistics counter are in DWORD
114 * FIXME: This function is for debugging, do not deal with
115 * the case of counters roll-over.
116 */
117static void iwl_accumulative_statistics(struct iwl_priv *priv,
118 __le32 *stats)
119{
120 int i, size;
121 __le32 *prev_stats;
122 u32 *accum_stats;
123 u32 *delta, *max_delta;
124 struct statistics_general_common *general, *accum_general;
125 struct statistics_tx *tx, *accum_tx;
126
127 if (priv->cfg->bt_statistics) {
128 prev_stats = (__le32 *)&priv->_agn.statistics_bt;
129 accum_stats = (u32 *)&priv->_agn.accum_statistics_bt;
130 size = sizeof(struct iwl_bt_notif_statistics);
131 general = &priv->_agn.statistics_bt.general.common;
132 accum_general = &priv->_agn.accum_statistics_bt.general.common;
133 tx = &priv->_agn.statistics_bt.tx;
134 accum_tx = &priv->_agn.accum_statistics_bt.tx;
135 delta = (u32 *)&priv->_agn.delta_statistics_bt;
136 max_delta = (u32 *)&priv->_agn.max_delta_bt;
137 } else {
138 prev_stats = (__le32 *)&priv->_agn.statistics;
139 accum_stats = (u32 *)&priv->_agn.accum_statistics;
140 size = sizeof(struct iwl_notif_statistics);
141 general = &priv->_agn.statistics.general.common;
142 accum_general = &priv->_agn.accum_statistics.general.common;
143 tx = &priv->_agn.statistics.tx;
144 accum_tx = &priv->_agn.accum_statistics.tx;
145 delta = (u32 *)&priv->_agn.delta_statistics;
146 max_delta = (u32 *)&priv->_agn.max_delta;
147 }
148 for (i = sizeof(__le32); i < size;
149 i += sizeof(__le32), stats++, prev_stats++, delta++,
150 max_delta++, accum_stats++) {
151 if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
152 *delta = (le32_to_cpu(*stats) -
153 le32_to_cpu(*prev_stats));
154 *accum_stats += *delta;
155 if (*delta > *max_delta)
156 *max_delta = *delta;
157 }
158 }
159
160 /* reset accumulative statistics for "no-counter" type statistics */
161 accum_general->temperature = general->temperature;
162 accum_general->temperature_m = general->temperature_m;
163 accum_general->ttl_timestamp = general->ttl_timestamp;
164 accum_tx->tx_power.ant_a = tx->tx_power.ant_a;
165 accum_tx->tx_power.ant_b = tx->tx_power.ant_b;
166 accum_tx->tx_power.ant_c = tx->tx_power.ant_c;
167}
168#endif
169
170#define REG_RECALIB_PERIOD (60)
171
172/**
173 * iwl_good_plcp_health - checks for plcp error.
174 *
175 * When the plcp error is exceeding the thresholds, reset the radio
176 * to improve the throughput.
177 */
178bool iwl_good_plcp_health(struct iwl_priv *priv,
179 struct iwl_rx_packet *pkt)
180{
181 bool rc = true;
182 int combined_plcp_delta;
183 unsigned int plcp_msec;
184 unsigned long plcp_received_jiffies;
185
186 if (priv->cfg->plcp_delta_threshold ==
187 IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
188 IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
189 return rc;
190 }
191
192 /*
193 * check for plcp_err and trigger radio reset if it exceeds
194 * the plcp error threshold plcp_delta.
195 */
196 plcp_received_jiffies = jiffies;
197 plcp_msec = jiffies_to_msecs((long) plcp_received_jiffies -
198 (long) priv->plcp_jiffies);
199 priv->plcp_jiffies = plcp_received_jiffies;
200 /*
201 * check to make sure plcp_msec is not 0 to prevent division
202 * by zero.
203 */
204 if (plcp_msec) {
205 struct statistics_rx_phy *ofdm;
206 struct statistics_rx_ht_phy *ofdm_ht;
207
208 if (priv->cfg->bt_statistics) {
209 ofdm = &pkt->u.stats_bt.rx.ofdm;
210 ofdm_ht = &pkt->u.stats_bt.rx.ofdm_ht;
211 combined_plcp_delta =
212 (le32_to_cpu(ofdm->plcp_err) -
213 le32_to_cpu(priv->_agn.statistics_bt.
214 rx.ofdm.plcp_err)) +
215 (le32_to_cpu(ofdm_ht->plcp_err) -
216 le32_to_cpu(priv->_agn.statistics_bt.
217 rx.ofdm_ht.plcp_err));
218 } else {
219 ofdm = &pkt->u.stats.rx.ofdm;
220 ofdm_ht = &pkt->u.stats.rx.ofdm_ht;
221 combined_plcp_delta =
222 (le32_to_cpu(ofdm->plcp_err) -
223 le32_to_cpu(priv->_agn.statistics.
224 rx.ofdm.plcp_err)) +
225 (le32_to_cpu(ofdm_ht->plcp_err) -
226 le32_to_cpu(priv->_agn.statistics.
227 rx.ofdm_ht.plcp_err));
228 }
229
230 if ((combined_plcp_delta > 0) &&
231 ((combined_plcp_delta * 100) / plcp_msec) >
232 priv->cfg->plcp_delta_threshold) {
233 /*
234 * if plcp_err exceed the threshold,
235 * the following data is printed in csv format:
236 * Text: plcp_err exceeded %d,
237 * Received ofdm.plcp_err,
238 * Current ofdm.plcp_err,
239 * Received ofdm_ht.plcp_err,
240 * Current ofdm_ht.plcp_err,
241 * combined_plcp_delta,
242 * plcp_msec
243 */
244 IWL_DEBUG_RADIO(priv, "plcp_err exceeded %u, "
245 "%u, %u, %u, %u, %d, %u mSecs\n",
246 priv->cfg->plcp_delta_threshold,
247 le32_to_cpu(ofdm->plcp_err),
248 le32_to_cpu(ofdm->plcp_err),
249 le32_to_cpu(ofdm_ht->plcp_err),
250 le32_to_cpu(ofdm_ht->plcp_err),
251 combined_plcp_delta, plcp_msec);
252
253 rc = false;
254 }
255 }
256 return rc;
257}
258
259void iwl_rx_statistics(struct iwl_priv *priv,
260 struct iwl_rx_mem_buffer *rxb)
261{
262 int change;
263 struct iwl_rx_packet *pkt = rxb_addr(rxb);
264
265 if (priv->cfg->bt_statistics) {
266 IWL_DEBUG_RX(priv,
267 "Statistics notification received (%d vs %d).\n",
268 (int)sizeof(struct iwl_bt_notif_statistics),
269 le32_to_cpu(pkt->len_n_flags) &
270 FH_RSCSR_FRAME_SIZE_MSK);
271
272 change = ((priv->_agn.statistics_bt.general.common.temperature !=
273 pkt->u.stats_bt.general.common.temperature) ||
274 ((priv->_agn.statistics_bt.flag &
275 STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
276 (pkt->u.stats_bt.flag &
277 STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
278#ifdef CONFIG_IWLWIFI_DEBUGFS
279 iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats_bt);
280#endif
281
282 } else {
283 IWL_DEBUG_RX(priv,
284 "Statistics notification received (%d vs %d).\n",
285 (int)sizeof(struct iwl_notif_statistics),
286 le32_to_cpu(pkt->len_n_flags) &
287 FH_RSCSR_FRAME_SIZE_MSK);
288
289 change = ((priv->_agn.statistics.general.common.temperature !=
290 pkt->u.stats.general.common.temperature) ||
291 ((priv->_agn.statistics.flag &
292 STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
293 (pkt->u.stats.flag &
294 STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
295#ifdef CONFIG_IWLWIFI_DEBUGFS
296 iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
297#endif
298
299 }
300
301 iwl_recover_from_statistics(priv, pkt);
302
303 if (priv->cfg->bt_statistics)
304 memcpy(&priv->_agn.statistics_bt, &pkt->u.stats_bt,
305 sizeof(priv->_agn.statistics_bt));
306 else
307 memcpy(&priv->_agn.statistics, &pkt->u.stats,
308 sizeof(priv->_agn.statistics));
309
310 set_bit(STATUS_STATISTICS, &priv->status);
311
312 /* Reschedule the statistics timer to occur in
313 * REG_RECALIB_PERIOD seconds to ensure we get a
314 * thermal update even if the uCode doesn't give
315 * us one */
316 mod_timer(&priv->statistics_periodic, jiffies +
317 msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
318
319 if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
320 (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
321 iwl_rx_calc_noise(priv);
322 queue_work(priv->workqueue, &priv->run_time_calib_work);
323 }
324 if (priv->cfg->ops->lib->temp_ops.temperature && change)
325 priv->cfg->ops->lib->temp_ops.temperature(priv);
326}
327
328void iwl_reply_statistics(struct iwl_priv *priv,
329 struct iwl_rx_mem_buffer *rxb)
330{
331 struct iwl_rx_packet *pkt = rxb_addr(rxb);
332
333 if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
334#ifdef CONFIG_IWLWIFI_DEBUGFS
335 memset(&priv->_agn.accum_statistics, 0,
336 sizeof(struct iwl_notif_statistics));
337 memset(&priv->_agn.delta_statistics, 0,
338 sizeof(struct iwl_notif_statistics));
339 memset(&priv->_agn.max_delta, 0,
340 sizeof(struct iwl_notif_statistics));
341 memset(&priv->_agn.accum_statistics_bt, 0,
342 sizeof(struct iwl_bt_notif_statistics));
343 memset(&priv->_agn.delta_statistics_bt, 0,
344 sizeof(struct iwl_bt_notif_statistics));
345 memset(&priv->_agn.max_delta_bt, 0,
346 sizeof(struct iwl_bt_notif_statistics));
347#endif
348 IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
349 }
350 iwl_rx_statistics(priv, rxb);
351}
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-11 09:25:37 -0400