/******************************************************************************
*
- * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
+ * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
*
* Portions of this file are derived from the ipw3945 project, as well
* as portions of the ieee80211 subsystem header files.
pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
PAGE_SIZE << priv->hw_params.rx_page_order,
PCI_DMA_FROMDEVICE);
- __free_pages(rxq->pool[i].page,
- priv->hw_params.rx_page_order);
+ __iwl_free_pages(priv, rxq->pool[i].page);
rxq->pool[i].page = NULL;
- priv->alloc_rxb_page--;
}
}
pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
PAGE_SIZE << priv->hw_params.rx_page_order,
PCI_DMA_FROMDEVICE);
- priv->alloc_rxb_page--;
- __free_pages(rxq->pool[i].page,
- priv->hw_params.rx_page_order);
+ __iwl_free_pages(priv, rxq->pool[i].page);
rxq->pool[i].page = NULL;
}
list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
(rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)|
(rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS));
- /* Set interrupt coalescing timer to 64 x 32 = 2048 usecs */
- iwl_write8(priv, CSR_INT_COALESCING, 0x40);
+ /* Set interrupt coalescing timer to default (2048 usecs) */
+ iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF);
return 0;
}
struct iwl_missed_beacon_notif *missed_beacon;
missed_beacon = &pkt->u.missed_beacon;
- if (le32_to_cpu(missed_beacon->consequtive_missed_beacons) > 5) {
+ if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >
+ priv->missed_beacon_threshold) {
IWL_DEBUG_CALIB(priv, "missed bcn cnsq %d totl %d rcd %d expctd %d\n",
- le32_to_cpu(missed_beacon->consequtive_missed_beacons),
+ le32_to_cpu(missed_beacon->consecutive_missed_beacons),
le32_to_cpu(missed_beacon->total_missed_becons),
le32_to_cpu(missed_beacon->num_recvd_beacons),
le32_to_cpu(missed_beacon->num_expected_beacons));
}
EXPORT_SYMBOL(iwl_rx_missed_beacon_notif);
+void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
+
+ if (!report->state) {
+ IWL_DEBUG_11H(priv,
+ "Spectrum Measure Notification: Start\n");
+ return;
+ }
+
+ memcpy(&priv->measure_report, report, sizeof(*report));
+ priv->measurement_status |= MEASUREMENT_READY;
+}
+EXPORT_SYMBOL(iwl_rx_spectrum_measure_notif);
+
+
/* Calculate noise level, based on measurements during network silence just
* before arriving beacon. This measurement can be done only if we know
int i;
__le32 *prev_stats;
u32 *accum_stats;
+ u32 *delta, *max_delta;
prev_stats = (__le32 *)&priv->statistics;
accum_stats = (u32 *)&priv->accum_statistics;
+ delta = (u32 *)&priv->delta_statistics;
+ max_delta = (u32 *)&priv->max_delta;
for (i = sizeof(__le32); i < sizeof(struct iwl_notif_statistics);
- i += sizeof(__le32), stats++, prev_stats++, accum_stats++)
- if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats))
- *accum_stats += (le32_to_cpu(*stats) -
+ i += sizeof(__le32), stats++, prev_stats++, delta++,
+ max_delta++, accum_stats++) {
+ if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
+ *delta = (le32_to_cpu(*stats) -
le32_to_cpu(*prev_stats));
+ *accum_stats += *delta;
+ if (*delta > *max_delta)
+ *max_delta = *delta;
+ }
+ }
/* reset accumulative statistics for "no-counter" type statistics */
priv->accum_statistics.general.temperature =
#define REG_RECALIB_PERIOD (60)
+#define PLCP_MSG "plcp_err exceeded %u, %u, %u, %u, %u, %d, %u mSecs\n"
void iwl_rx_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
int change;
struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ int combined_plcp_delta;
+ unsigned int plcp_msec;
+ unsigned long plcp_received_jiffies;
IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
(int)sizeof(priv->statistics),
#ifdef CONFIG_IWLWIFI_DEBUG
iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
#endif
+ /*
+ * check for plcp_err and trigger radio reset if it exceeds
+ * the plcp error threshold plcp_delta.
+ */
+ plcp_received_jiffies = jiffies;
+ plcp_msec = jiffies_to_msecs((long) plcp_received_jiffies -
+ (long) priv->plcp_jiffies);
+ priv->plcp_jiffies = plcp_received_jiffies;
+ /*
+ * check to make sure plcp_msec is not 0 to prevent division
+ * by zero.
+ */
+ if (plcp_msec) {
+ combined_plcp_delta =
+ (le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err) -
+ le32_to_cpu(priv->statistics.rx.ofdm.plcp_err)) +
+ (le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err) -
+ le32_to_cpu(priv->statistics.rx.ofdm_ht.plcp_err));
+
+ if ((combined_plcp_delta > 0) &&
+ ((combined_plcp_delta * 100) / plcp_msec) >
+ priv->cfg->plcp_delta_threshold) {
+ /*
+ * if plcp_err exceed the threshold, the following
+ * data is printed in csv format:
+ * Text: plcp_err exceeded %d,
+ * Received ofdm.plcp_err,
+ * Current ofdm.plcp_err,
+ * Received ofdm_ht.plcp_err,
+ * Current ofdm_ht.plcp_err,
+ * combined_plcp_delta,
+ * plcp_msec
+ */
+ IWL_DEBUG_RADIO(priv, PLCP_MSG,
+ priv->cfg->plcp_delta_threshold,
+ le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err),
+ le32_to_cpu(priv->statistics.rx.ofdm.plcp_err),
+ le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err),
+ le32_to_cpu(
+ priv->statistics.rx.ofdm_ht.plcp_err),
+ combined_plcp_delta, plcp_msec);
+
+ /*
+ * Reset the RF radio due to the high plcp
+ * error rate
+ */
+ iwl_force_rf_reset(priv);
+ }
+ }
+
memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
set_bit(STATUS_STATISTICS, &priv->status);
struct iwl_rx_packet *pkt = rxb_addr(rxb);
if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
- memset(&priv->statistics, 0,
- sizeof(struct iwl_notif_statistics));
#ifdef CONFIG_IWLWIFI_DEBUG
memset(&priv->accum_statistics, 0,
sizeof(struct iwl_notif_statistics));
+ memset(&priv->delta_statistics, 0,
+ sizeof(struct iwl_notif_statistics));
+ memset(&priv->max_delta, 0,
+ sizeof(struct iwl_notif_statistics));
#endif
IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
}
}
EXPORT_SYMBOL(iwl_reply_statistics);
-#define PERFECT_RSSI (-20) /* dBm */
-#define WORST_RSSI (-95) /* dBm */
-#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
-
-/* Calculate an indication of rx signal quality (a percentage, not dBm!).
- * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
- * about formulas used below. */
-static int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
-{
- int sig_qual;
- int degradation = PERFECT_RSSI - rssi_dbm;
-
- /* If we get a noise measurement, use signal-to-noise ratio (SNR)
- * as indicator; formula is (signal dbm - noise dbm).
- * SNR at or above 40 is a great signal (100%).
- * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
- * Weakest usable signal is usually 10 - 15 dB SNR. */
- if (noise_dbm) {
- if (rssi_dbm - noise_dbm >= 40)
- return 100;
- else if (rssi_dbm < noise_dbm)
- return 0;
- sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
-
- /* Else use just the signal level.
- * This formula is a least squares fit of data points collected and
- * compared with a reference system that had a percentage (%) display
- * for signal quality. */
- } else
- sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
- (15 * RSSI_RANGE + 62 * degradation)) /
- (RSSI_RANGE * RSSI_RANGE);
-
- if (sig_qual > 100)
- sig_qual = 100;
- else if (sig_qual < 1)
- sig_qual = 0;
-
- return sig_qual;
-}
-
/* Calc max signal level (dBm) among 3 possible receivers */
static inline int iwl_calc_rssi(struct iwl_priv *priv,
struct iwl_rx_phy_res *rx_resp)
if (ieee80211_is_mgmt(fc) ||
ieee80211_has_protected(fc) ||
ieee80211_has_morefrags(fc) ||
- le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)
+ le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG ||
+ (ieee80211_is_data_qos(fc) &&
+ *ieee80211_get_qos_ctl(hdr) &
+ IEEE80211_QOS_CONTROL_A_MSDU_PRESENT))
ret = skb_linearize(skb);
else
ret = __pskb_pull_tail(skb, min_t(u16, IWL_LINK_HDR_MAX, len)) ?
if (iwl_is_associated(priv) &&
!test_bit(STATUS_SCANNING, &priv->status)) {
rx_status.noise = priv->last_rx_noise;
- rx_status.qual = iwl_calc_sig_qual(rx_status.signal,
- rx_status.noise);
} else {
rx_status.noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
- rx_status.qual = iwl_calc_sig_qual(rx_status.signal, 0);
}
/* Reset beacon noise level if not associated. */
iwl_dbg_report_frame(priv, phy_res, len, header, 1);
#endif
iwl_dbg_log_rx_data_frame(priv, len, header);
- IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, qual %d, TSF %llu\n",
- rx_status.signal, rx_status.noise, rx_status.qual,
+ IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, TSF %llu\n",
+ rx_status.signal, rx_status.noise,
(unsigned long long)rx_status.mactime);
/*
projects / cascardo / linux.git / blobdiff