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-/******************************************************************************
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- *
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- * GPL LICENSE SUMMARY
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- *
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- * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of version 2 of the GNU General Public License as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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- * General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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- * USA
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- *
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- * The full GNU General Public License is included in this distribution
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- * in the file called LICENSE.GPL.
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- *
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- * Contact Information:
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- * Intel Linux Wireless <ilw@linux.intel.com>
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- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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- *
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- *****************************************************************************/
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-
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-#include <linux/kernel.h>
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-#include <linux/module.h>
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-#include <linux/init.h>
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-#include <linux/sched.h>
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-
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-#include "iwl-dev.h"
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-#include "iwl-core.h"
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-#include "iwl-agn-calib.h"
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-#include "iwl-sta.h"
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-#include "iwl-io.h"
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-#include "iwl-helpers.h"
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-#include "iwl-agn-hw.h"
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-#include "iwl-agn.h"
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-
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-void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
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- struct iwl_rx_mem_buffer *rxb)
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-
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-{
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- struct iwl_rx_packet *pkt = rxb_addr(rxb);
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- struct iwl_missed_beacon_notif *missed_beacon;
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-
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- missed_beacon = &pkt->u.missed_beacon;
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- if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >
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- priv->missed_beacon_threshold) {
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- IWL_DEBUG_CALIB(priv,
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- "missed bcn cnsq %d totl %d rcd %d expctd %d\n",
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- le32_to_cpu(missed_beacon->consecutive_missed_beacons),
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- le32_to_cpu(missed_beacon->total_missed_becons),
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- le32_to_cpu(missed_beacon->num_recvd_beacons),
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- le32_to_cpu(missed_beacon->num_expected_beacons));
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- if (!test_bit(STATUS_SCANNING, &priv->status))
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- iwl_init_sensitivity(priv);
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- }
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-}
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-
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-/* Calculate noise level, based on measurements during network silence just
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- * before arriving beacon. This measurement can be done only if we know
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- * exactly when to expect beacons, therefore only when we're associated. */
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-static void iwl_rx_calc_noise(struct iwl_priv *priv)
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-{
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- struct statistics_rx_non_phy *rx_info;
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- int num_active_rx = 0;
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- int total_silence = 0;
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- int bcn_silence_a, bcn_silence_b, bcn_silence_c;
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- int last_rx_noise;
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-
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- if (iwl_bt_statistics(priv))
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- rx_info = &(priv->_agn.statistics_bt.rx.general.common);
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- else
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- rx_info = &(priv->_agn.statistics.rx.general);
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- bcn_silence_a =
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- le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
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- bcn_silence_b =
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- le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
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- bcn_silence_c =
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- le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
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-
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- if (bcn_silence_a) {
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- total_silence += bcn_silence_a;
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- num_active_rx++;
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- }
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- if (bcn_silence_b) {
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- total_silence += bcn_silence_b;
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- num_active_rx++;
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- }
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- if (bcn_silence_c) {
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- total_silence += bcn_silence_c;
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- num_active_rx++;
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- }
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-
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- /* Average among active antennas */
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- if (num_active_rx)
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- last_rx_noise = (total_silence / num_active_rx) - 107;
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- else
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- last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
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-
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- IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",
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- bcn_silence_a, bcn_silence_b, bcn_silence_c,
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- last_rx_noise);
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-}
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-
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-#ifdef CONFIG_IWLWIFI_DEBUGFS
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-/*
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- * based on the assumption of all statistics counter are in DWORD
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- * FIXME: This function is for debugging, do not deal with
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- * the case of counters roll-over.
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- */
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-static void iwl_accumulative_statistics(struct iwl_priv *priv,
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- __le32 *stats)
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-{
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- int i, size;
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- __le32 *prev_stats;
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- u32 *accum_stats;
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- u32 *delta, *max_delta;
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- struct statistics_general_common *general, *accum_general;
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- struct statistics_tx *tx, *accum_tx;
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-
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- if (iwl_bt_statistics(priv)) {
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- prev_stats = (__le32 *)&priv->_agn.statistics_bt;
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- accum_stats = (u32 *)&priv->_agn.accum_statistics_bt;
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- size = sizeof(struct iwl_bt_notif_statistics);
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- general = &priv->_agn.statistics_bt.general.common;
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- accum_general = &priv->_agn.accum_statistics_bt.general.common;
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- tx = &priv->_agn.statistics_bt.tx;
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- accum_tx = &priv->_agn.accum_statistics_bt.tx;
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- delta = (u32 *)&priv->_agn.delta_statistics_bt;
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- max_delta = (u32 *)&priv->_agn.max_delta_bt;
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- } else {
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- prev_stats = (__le32 *)&priv->_agn.statistics;
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- accum_stats = (u32 *)&priv->_agn.accum_statistics;
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- size = sizeof(struct iwl_notif_statistics);
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- general = &priv->_agn.statistics.general.common;
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- accum_general = &priv->_agn.accum_statistics.general.common;
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- tx = &priv->_agn.statistics.tx;
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- accum_tx = &priv->_agn.accum_statistics.tx;
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- delta = (u32 *)&priv->_agn.delta_statistics;
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- max_delta = (u32 *)&priv->_agn.max_delta;
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- }
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- for (i = sizeof(__le32); i < size;
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- i += sizeof(__le32), stats++, prev_stats++, delta++,
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- max_delta++, accum_stats++) {
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- if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
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- *delta = (le32_to_cpu(*stats) -
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- le32_to_cpu(*prev_stats));
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- *accum_stats += *delta;
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- if (*delta > *max_delta)
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- *max_delta = *delta;
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- }
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- }
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-
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- /* reset accumulative statistics for "no-counter" type statistics */
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- accum_general->temperature = general->temperature;
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- accum_general->temperature_m = general->temperature_m;
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- accum_general->ttl_timestamp = general->ttl_timestamp;
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- accum_tx->tx_power.ant_a = tx->tx_power.ant_a;
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- accum_tx->tx_power.ant_b = tx->tx_power.ant_b;
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- accum_tx->tx_power.ant_c = tx->tx_power.ant_c;
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-}
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-#endif
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-
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-#define REG_RECALIB_PERIOD (60)
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-
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-void iwl_rx_statistics(struct iwl_priv *priv,
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- struct iwl_rx_mem_buffer *rxb)
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-{
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- int change;
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- struct iwl_rx_packet *pkt = rxb_addr(rxb);
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-
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- if (iwl_bt_statistics(priv)) {
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- IWL_DEBUG_RX(priv,
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- "Statistics notification received (%d vs %d).\n",
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- (int)sizeof(struct iwl_bt_notif_statistics),
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- le32_to_cpu(pkt->len_n_flags) &
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- FH_RSCSR_FRAME_SIZE_MSK);
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-
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- change = ((priv->_agn.statistics_bt.general.common.temperature !=
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- pkt->u.stats_bt.general.common.temperature) ||
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- ((priv->_agn.statistics_bt.flag &
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- STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
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- (pkt->u.stats_bt.flag &
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- STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
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-#ifdef CONFIG_IWLWIFI_DEBUGFS
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- iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats_bt);
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-#endif
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-
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- } else {
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- IWL_DEBUG_RX(priv,
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- "Statistics notification received (%d vs %d).\n",
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- (int)sizeof(struct iwl_notif_statistics),
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- le32_to_cpu(pkt->len_n_flags) &
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- FH_RSCSR_FRAME_SIZE_MSK);
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-
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- change = ((priv->_agn.statistics.general.common.temperature !=
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- pkt->u.stats.general.common.temperature) ||
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- ((priv->_agn.statistics.flag &
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- STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
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- (pkt->u.stats.flag &
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- STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
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-#ifdef CONFIG_IWLWIFI_DEBUGFS
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- iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
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-#endif
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-
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- }
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-
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- iwl_recover_from_statistics(priv, pkt);
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-
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- if (iwl_bt_statistics(priv))
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- memcpy(&priv->_agn.statistics_bt, &pkt->u.stats_bt,
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- sizeof(priv->_agn.statistics_bt));
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- else
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- memcpy(&priv->_agn.statistics, &pkt->u.stats,
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- sizeof(priv->_agn.statistics));
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-
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- set_bit(STATUS_STATISTICS, &priv->status);
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-
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- /* Reschedule the statistics timer to occur in
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- * REG_RECALIB_PERIOD seconds to ensure we get a
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- * thermal update even if the uCode doesn't give
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- * us one */
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- mod_timer(&priv->statistics_periodic, jiffies +
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- msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
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-
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- if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
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- (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
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- iwl_rx_calc_noise(priv);
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- queue_work(priv->workqueue, &priv->run_time_calib_work);
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- }
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- if (priv->cfg->ops->lib->temp_ops.temperature && change)
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- priv->cfg->ops->lib->temp_ops.temperature(priv);
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-}
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-
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-void iwl_reply_statistics(struct iwl_priv *priv,
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- struct iwl_rx_mem_buffer *rxb)
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-{
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- struct iwl_rx_packet *pkt = rxb_addr(rxb);
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-
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- if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
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-#ifdef CONFIG_IWLWIFI_DEBUGFS
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- memset(&priv->_agn.accum_statistics, 0,
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- sizeof(struct iwl_notif_statistics));
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- memset(&priv->_agn.delta_statistics, 0,
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- sizeof(struct iwl_notif_statistics));
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- memset(&priv->_agn.max_delta, 0,
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- sizeof(struct iwl_notif_statistics));
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- memset(&priv->_agn.accum_statistics_bt, 0,
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- sizeof(struct iwl_bt_notif_statistics));
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- memset(&priv->_agn.delta_statistics_bt, 0,
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- sizeof(struct iwl_bt_notif_statistics));
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- memset(&priv->_agn.max_delta_bt, 0,
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- sizeof(struct iwl_bt_notif_statistics));
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-#endif
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- IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
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- }
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- iwl_rx_statistics(priv, rxb);
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-}
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Stanislaw Gruszka