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authorWey-Yi Guy <wey-yi.w.guy@intel.com>2010-06-14 20:09:53 -0400
committerReinette Chatre <reinette.chatre@intel.com>2010-06-21 13:47:12 -0400
commit278fc73c0c6014bc2f55bce898bdeaa322bf4aba (patch)
tree9b27447d23b0c07aea6cd886f074392cb1de1539 /drivers/net/wireless/iwlwifi/iwl-rx.c
parent8756371589e7d3ad15f1a385e1c09f5ae706b75e (diff)
iwlwifi: move agn specific rx related code to iwl-agn-rx.c
To avoid having unnecessary functions in iwlcore.ko, those that are not shared by agn and 3945, move agn specific rx related code to iwl-agn-rx.c. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-rx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-rx.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 86a35376579..b437f317b97 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -205,26 +205,6 @@ err_bd:
205} 205}
206EXPORT_SYMBOL(iwl_rx_queue_alloc); 206EXPORT_SYMBOL(iwl_rx_queue_alloc);
207 207
208void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
209 struct iwl_rx_mem_buffer *rxb)
210
211{
212 struct iwl_rx_packet *pkt = rxb_addr(rxb);
213 struct iwl_missed_beacon_notif *missed_beacon;
214
215 missed_beacon = &pkt->u.missed_beacon;
216 if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >
217 priv->missed_beacon_threshold) {
218 IWL_DEBUG_CALIB(priv, "missed bcn cnsq %d totl %d rcd %d expctd %d\n",
219 le32_to_cpu(missed_beacon->consecutive_missed_beacons),
220 le32_to_cpu(missed_beacon->total_missed_becons),
221 le32_to_cpu(missed_beacon->num_recvd_beacons),
222 le32_to_cpu(missed_beacon->num_expected_beacons));
223 if (!test_bit(STATUS_SCANNING, &priv->status))
224 iwl_init_sensitivity(priv);
225 }
226}
227EXPORT_SYMBOL(iwl_rx_missed_beacon_notif);
228 208
229void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv, 209void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
230 struct iwl_rx_mem_buffer *rxb) 210 struct iwl_rx_mem_buffer *rxb)
@@ -243,161 +223,6 @@ void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
243} 223}
244EXPORT_SYMBOL(iwl_rx_spectrum_measure_notif); 224EXPORT_SYMBOL(iwl_rx_spectrum_measure_notif);
245 225
246
247
248/* Calculate noise level, based on measurements during network silence just
249 * before arriving beacon. This measurement can be done only if we know
250 * exactly when to expect beacons, therefore only when we're associated. */
251static void iwl_rx_calc_noise(struct iwl_priv *priv)
252{
253 struct statistics_rx_non_phy *rx_info
254 = &(priv->statistics.rx.general);
255 int num_active_rx = 0;
256 int total_silence = 0;
257 int bcn_silence_a =
258 le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
259 int bcn_silence_b =
260 le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
261 int bcn_silence_c =
262 le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
263 int last_rx_noise;
264
265 if (bcn_silence_a) {
266 total_silence += bcn_silence_a;
267 num_active_rx++;
268 }
269 if (bcn_silence_b) {
270 total_silence += bcn_silence_b;
271 num_active_rx++;
272 }
273 if (bcn_silence_c) {
274 total_silence += bcn_silence_c;
275 num_active_rx++;
276 }
277
278 /* Average among active antennas */
279 if (num_active_rx)
280 last_rx_noise = (total_silence / num_active_rx) - 107;
281 else
282 last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
283
284 IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",
285 bcn_silence_a, bcn_silence_b, bcn_silence_c,
286 last_rx_noise);
287}
288
289#ifdef CONFIG_IWLWIFI_DEBUGFS
290/*
291 * based on the assumption of all statistics counter are in DWORD
292 * FIXME: This function is for debugging, do not deal with
293 * the case of counters roll-over.
294 */
295static void iwl_accumulative_statistics(struct iwl_priv *priv,
296 __le32 *stats)
297{
298 int i;
299 __le32 *prev_stats;
300 u32 *accum_stats;
301 u32 *delta, *max_delta;
302
303 prev_stats = (__le32 *)&priv->statistics;
304 accum_stats = (u32 *)&priv->accum_statistics;
305 delta = (u32 *)&priv->delta_statistics;
306 max_delta = (u32 *)&priv->max_delta;
307
308 for (i = sizeof(__le32); i < sizeof(struct iwl_notif_statistics);
309 i += sizeof(__le32), stats++, prev_stats++, delta++,
310 max_delta++, accum_stats++) {
311 if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
312 *delta = (le32_to_cpu(*stats) -
313 le32_to_cpu(*prev_stats));
314 *accum_stats += *delta;
315 if (*delta > *max_delta)
316 *max_delta = *delta;
317 }
318 }
319
320 /* reset accumulative statistics for "no-counter" type statistics */
321 priv->accum_statistics.general.temperature =
322 priv->statistics.general.temperature;
323 priv->accum_statistics.general.temperature_m =
324 priv->statistics.general.temperature_m;
325 priv->accum_statistics.general.ttl_timestamp =
326 priv->statistics.general.ttl_timestamp;
327 priv->accum_statistics.tx.tx_power.ant_a =
328 priv->statistics.tx.tx_power.ant_a;
329 priv->accum_statistics.tx.tx_power.ant_b =
330 priv->statistics.tx.tx_power.ant_b;
331 priv->accum_statistics.tx.tx_power.ant_c =
332 priv->statistics.tx.tx_power.ant_c;
333}
334#endif
335
336#define REG_RECALIB_PERIOD (60)
337
338/**
339 * iwl_good_plcp_health - checks for plcp error.
340 *
341 * When the plcp error is exceeding the thresholds, reset the radio
342 * to improve the throughput.
343 */
344bool iwl_good_plcp_health(struct iwl_priv *priv,
345 struct iwl_rx_packet *pkt)
346{
347 bool rc = true;
348 int combined_plcp_delta;
349 unsigned int plcp_msec;
350 unsigned long plcp_received_jiffies;
351
352 /*
353 * check for plcp_err and trigger radio reset if it exceeds
354 * the plcp error threshold plcp_delta.
355 */
356 plcp_received_jiffies = jiffies;
357 plcp_msec = jiffies_to_msecs((long) plcp_received_jiffies -
358 (long) priv->plcp_jiffies);
359 priv->plcp_jiffies = plcp_received_jiffies;
360 /*
361 * check to make sure plcp_msec is not 0 to prevent division
362 * by zero.
363 */
364 if (plcp_msec) {
365 combined_plcp_delta =
366 (le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err) -
367 le32_to_cpu(priv->statistics.rx.ofdm.plcp_err)) +
368 (le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err) -
369 le32_to_cpu(priv->statistics.rx.ofdm_ht.plcp_err));
370
371 if ((combined_plcp_delta > 0) &&
372 ((combined_plcp_delta * 100) / plcp_msec) >
373 priv->cfg->plcp_delta_threshold) {
374 /*
375 * if plcp_err exceed the threshold,
376 * the following data is printed in csv format:
377 * Text: plcp_err exceeded %d,
378 * Received ofdm.plcp_err,
379 * Current ofdm.plcp_err,
380 * Received ofdm_ht.plcp_err,
381 * Current ofdm_ht.plcp_err,
382 * combined_plcp_delta,
383 * plcp_msec
384 */
385 IWL_DEBUG_RADIO(priv, "plcp_err exceeded %u, "
386 "%u, %u, %u, %u, %d, %u mSecs\n",
387 priv->cfg->plcp_delta_threshold,
388 le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err),
389 le32_to_cpu(priv->statistics.rx.ofdm.plcp_err),
390 le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err),
391 le32_to_cpu(
392 priv->statistics.rx.ofdm_ht.plcp_err),
393 combined_plcp_delta, plcp_msec);
394 rc = false;
395 }
396 }
397 return rc;
398}
399EXPORT_SYMBOL(iwl_good_plcp_health);
400
401void iwl_recover_from_statistics(struct iwl_priv *priv, 226void iwl_recover_from_statistics(struct iwl_priv *priv,
402 struct iwl_rx_packet *pkt) 227 struct iwl_rx_packet *pkt)
403{ 228{
@@ -431,69 +256,6 @@ void iwl_recover_from_statistics(struct iwl_priv *priv,
431} 256}
432EXPORT_SYMBOL(iwl_recover_from_statistics); 257EXPORT_SYMBOL(iwl_recover_from_statistics);
433 258
434void iwl_rx_statistics(struct iwl_priv *priv,
435 struct iwl_rx_mem_buffer *rxb)
436{
437 int change;
438 struct iwl_rx_packet *pkt = rxb_addr(rxb);
439
440
441 IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
442 (int)sizeof(priv->statistics),
443 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
444
445 change = ((priv->statistics.general.temperature !=
446 pkt->u.stats.general.temperature) ||
447 ((priv->statistics.flag &
448 STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
449 (pkt->u.stats.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
450
451#ifdef CONFIG_IWLWIFI_DEBUGFS
452 iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
453#endif
454 iwl_recover_from_statistics(priv, pkt);
455
456 memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
457
458 set_bit(STATUS_STATISTICS, &priv->status);
459
460 /* Reschedule the statistics timer to occur in
461 * REG_RECALIB_PERIOD seconds to ensure we get a
462 * thermal update even if the uCode doesn't give
463 * us one */
464 mod_timer(&priv->statistics_periodic, jiffies +
465 msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
466
467 if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
468 (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
469 iwl_rx_calc_noise(priv);
470 queue_work(priv->workqueue, &priv->run_time_calib_work);
471 }
472 if (priv->cfg->ops->lib->temp_ops.temperature && change)
473 priv->cfg->ops->lib->temp_ops.temperature(priv);
474}
475EXPORT_SYMBOL(iwl_rx_statistics);
476
477void iwl_reply_statistics(struct iwl_priv *priv,
478 struct iwl_rx_mem_buffer *rxb)
479{
480 struct iwl_rx_packet *pkt = rxb_addr(rxb);
481
482 if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
483#ifdef CONFIG_IWLWIFI_DEBUGFS
484 memset(&priv->accum_statistics, 0,
485 sizeof(struct iwl_notif_statistics));
486 memset(&priv->delta_statistics, 0,
487 sizeof(struct iwl_notif_statistics));
488 memset(&priv->max_delta, 0,
489 sizeof(struct iwl_notif_statistics));
490#endif
491 IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
492 }
493 iwl_rx_statistics(priv, rxb);
494}
495EXPORT_SYMBOL(iwl_reply_statistics);
496
497/* 259/*
498 * returns non-zero if packet should be dropped 260 * returns non-zero if packet should be dropped
499 */ 261 */