iwlwifi: move remaining iwl-agn-rx.c code into iwl-rx.c

There is no need to have separate iwl-agn-rx.c file after iwlegacy
split.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 224 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index feee76181ac5..566e2d979ce3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -37,6 +37,7 @@
 #include "iwl-sta.h"
 #include "iwl-io.h"
 #include "iwl-helpers.h"
+#include "iwl-agn-calib.h"
 /************************** RX-FUNCTIONS ****************************/
 /*
  * Rx theory of operation
@@ -210,7 +211,6 @@ err_bd:
 	return -ENOMEM;
 }
 
-
 void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
 					  struct iwl_rx_mem_buffer *rxb)
 {
@@ -378,7 +378,7 @@ static bool iwl_good_plcp_health(struct iwl_priv *priv, struct iwl_rx_packet *pk
 	return rc;
 }
 
-void iwl_recover_from_statistics(struct iwl_priv *priv, struct iwl_rx_packet *pkt)
+static void iwl_recover_from_statistics(struct iwl_priv *priv, struct iwl_rx_packet *pkt)
 {
 	const struct iwl_mod_params *mod_params = priv->cfg->mod_params;
 
@@ -396,6 +396,228 @@ void iwl_recover_from_statistics(struct iwl_priv *priv, struct iwl_rx_packet *pk
 		iwl_force_reset(priv, IWL_RF_RESET, false);
 }
 
+/* Calculate noise level, based on measurements during network silence just
+ *   before arriving beacon.  This measurement can be done only if we know
+ *   exactly when to expect beacons, therefore only when we're associated. */
+static void iwl_rx_calc_noise(struct iwl_priv *priv)
+{
+	struct statistics_rx_non_phy *rx_info;
+	int num_active_rx = 0;
+	int total_silence = 0;
+	int bcn_silence_a, bcn_silence_b, bcn_silence_c;
+	int last_rx_noise;
+
+	if (iwl_bt_statistics(priv))
+		rx_info = &(priv->_agn.statistics_bt.rx.general.common);
+	else
+		rx_info = &(priv->_agn.statistics.rx.general);
+	bcn_silence_a =
+		le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
+	bcn_silence_b =
+		le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
+	bcn_silence_c =
+		le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
+
+	if (bcn_silence_a) {
+		total_silence += bcn_silence_a;
+		num_active_rx++;
+	}
+	if (bcn_silence_b) {
+		total_silence += bcn_silence_b;
+		num_active_rx++;
+	}
+	if (bcn_silence_c) {
+		total_silence += bcn_silence_c;
+		num_active_rx++;
+	}
+
+	/* Average among active antennas */
+	if (num_active_rx)
+		last_rx_noise = (total_silence / num_active_rx) - 107;
+	else
+		last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+
+	IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",
+			bcn_silence_a, bcn_silence_b, bcn_silence_c,
+			last_rx_noise);
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+/*
+ *  based on the assumption of all statistics counter are in DWORD
+ *  FIXME: This function is for debugging, do not deal with
+ *  the case of counters roll-over.
+ */
+static void iwl_accumulative_statistics(struct iwl_priv *priv,
+					__le32 *stats)
+{
+	int i, size;
+	__le32 *prev_stats;
+	u32 *accum_stats;
+	u32 *delta, *max_delta;
+	struct statistics_general_common *general, *accum_general;
+	struct statistics_tx *tx, *accum_tx;
+
+	if (iwl_bt_statistics(priv)) {
+		prev_stats = (__le32 *)&priv->_agn.statistics_bt;
+		accum_stats = (u32 *)&priv->_agn.accum_statistics_bt;
+		size = sizeof(struct iwl_bt_notif_statistics);
+		general = &priv->_agn.statistics_bt.general.common;
+		accum_general = &priv->_agn.accum_statistics_bt.general.common;
+		tx = &priv->_agn.statistics_bt.tx;
+		accum_tx = &priv->_agn.accum_statistics_bt.tx;
+		delta = (u32 *)&priv->_agn.delta_statistics_bt;
+		max_delta = (u32 *)&priv->_agn.max_delta_bt;
+	} else {
+		prev_stats = (__le32 *)&priv->_agn.statistics;
+		accum_stats = (u32 *)&priv->_agn.accum_statistics;
+		size = sizeof(struct iwl_notif_statistics);
+		general = &priv->_agn.statistics.general.common;
+		accum_general = &priv->_agn.accum_statistics.general.common;
+		tx = &priv->_agn.statistics.tx;
+		accum_tx = &priv->_agn.accum_statistics.tx;
+		delta = (u32 *)&priv->_agn.delta_statistics;
+		max_delta = (u32 *)&priv->_agn.max_delta;
+	}
+	for (i = sizeof(__le32); i < size;
+	     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 */
+	accum_general->temperature = general->temperature;
+	accum_general->temperature_m = general->temperature_m;
+	accum_general->ttl_timestamp = general->ttl_timestamp;
+	accum_tx->tx_power.ant_a = tx->tx_power.ant_a;
+	accum_tx->tx_power.ant_b = tx->tx_power.ant_b;
+	accum_tx->tx_power.ant_c = tx->tx_power.ant_c;
+}
+#endif
+
+#define REG_RECALIB_PERIOD (60)
+
+void iwl_rx_statistics(struct iwl_priv *priv,
+			      struct iwl_rx_mem_buffer *rxb)
+{
+	int change;
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+	if (iwl_bt_statistics(priv)) {
+		IWL_DEBUG_RX(priv,
+			     "Statistics notification received (%d vs %d).\n",
+			     (int)sizeof(struct iwl_bt_notif_statistics),
+			     le32_to_cpu(pkt->len_n_flags) &
+			     FH_RSCSR_FRAME_SIZE_MSK);
+
+		change = ((priv->_agn.statistics_bt.general.common.temperature !=
+			   pkt->u.stats_bt.general.common.temperature) ||
+			   ((priv->_agn.statistics_bt.flag &
+			   STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
+			   (pkt->u.stats_bt.flag &
+			   STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+		iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats_bt);
+#endif
+
+	} else {
+		IWL_DEBUG_RX(priv,
+			     "Statistics notification received (%d vs %d).\n",
+			     (int)sizeof(struct iwl_notif_statistics),
+			     le32_to_cpu(pkt->len_n_flags) &
+			     FH_RSCSR_FRAME_SIZE_MSK);
+
+		change = ((priv->_agn.statistics.general.common.temperature !=
+			   pkt->u.stats.general.common.temperature) ||
+			   ((priv->_agn.statistics.flag &
+			   STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
+			   (pkt->u.stats.flag &
+			   STATISTICS_REPLY_FLG_HT40_MODE_MSK)));
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+		iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);
+#endif
+
+	}
+
+	iwl_recover_from_statistics(priv, pkt);
+
+	if (iwl_bt_statistics(priv))
+		memcpy(&priv->_agn.statistics_bt, &pkt->u.stats_bt,
+			sizeof(priv->_agn.statistics_bt));
+	else
+		memcpy(&priv->_agn.statistics, &pkt->u.stats,
+			sizeof(priv->_agn.statistics));
+
+	set_bit(STATUS_STATISTICS, &priv->status);
+
+	/* Reschedule the statistics timer to occur in
+	 * REG_RECALIB_PERIOD seconds to ensure we get a
+	 * thermal update even if the uCode doesn't give
+	 * us one */
+	mod_timer(&priv->statistics_periodic, jiffies +
+		  msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
+
+	if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
+	    (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
+		iwl_rx_calc_noise(priv);
+		queue_work(priv->workqueue, &priv->run_time_calib_work);
+	}
+	if (priv->cfg->ops->lib->temp_ops.temperature && change)
+		priv->cfg->ops->lib->temp_ops.temperature(priv);
+}
+
+void iwl_reply_statistics(struct iwl_priv *priv,
+			      struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+	if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+		memset(&priv->_agn.accum_statistics, 0,
+			sizeof(struct iwl_notif_statistics));
+		memset(&priv->_agn.delta_statistics, 0,
+			sizeof(struct iwl_notif_statistics));
+		memset(&priv->_agn.max_delta, 0,
+			sizeof(struct iwl_notif_statistics));
+		memset(&priv->_agn.accum_statistics_bt, 0,
+			sizeof(struct iwl_bt_notif_statistics));
+		memset(&priv->_agn.delta_statistics_bt, 0,
+			sizeof(struct iwl_bt_notif_statistics));
+		memset(&priv->_agn.max_delta_bt, 0,
+			sizeof(struct iwl_bt_notif_statistics));
+#endif
+		IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
+	}
+	iwl_rx_statistics(priv, rxb);
+}
+
+void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
+				struct iwl_rx_mem_buffer *rxb)
+
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_missed_beacon_notif *missed_beacon;
+
+	missed_beacon = &pkt->u.missed_beacon;
+	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->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));
+		if (!test_bit(STATUS_SCANNING, &priv->status))
+			iwl_init_sensitivity(priv);
+	}
+}
+
 /*
  * returns non-zero if packet should be dropped
  */