diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-rx.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-rx.c | 104 |
1 files changed, 94 insertions, 10 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index 2dbce85404aa..0f718f6df5fd 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -1,6 +1,6 @@ /****************************************************************************** * - * 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. @@ -473,8 +473,8 @@ int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) (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; } @@ -499,9 +499,10 @@ void iwl_rx_missed_beacon_notif(struct iwl_priv *priv, 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)); @@ -511,6 +512,24 @@ void iwl_rx_missed_beacon_notif(struct iwl_priv *priv, } 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 @@ -564,15 +583,24 @@ static void iwl_accumulative_statistics(struct iwl_priv *priv, 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 = @@ -592,11 +620,15 @@ static void iwl_accumulative_statistics(struct iwl_priv *priv, #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), @@ -611,6 +643,56 @@ void iwl_rx_statistics(struct iwl_priv *priv, #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); @@ -638,11 +720,13 @@ void iwl_reply_statistics(struct iwl_priv *priv, 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"); } |
