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path: root/drivers/net/wireless/iwlwifi/iwl-rx.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-rx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-rx.c136
1 files changed, 108 insertions, 28 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 2dbce85404aa..df257bc15f49 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.
@@ -123,12 +123,11 @@ EXPORT_SYMBOL(iwl_rx_queue_space);
/**
* iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
*/
-int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
+void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
{
unsigned long flags;
u32 rx_wrt_ptr_reg = priv->hw_params.rx_wrt_ptr_reg;
u32 reg;
- int ret = 0;
spin_lock_irqsave(&q->lock, flags);
@@ -161,7 +160,6 @@ int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
exit_unlock:
spin_unlock_irqrestore(&q->lock, flags);
- return ret;
}
EXPORT_SYMBOL(iwl_rx_queue_update_write_ptr);
/**
@@ -184,14 +182,13 @@ static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
* also updates the memory address in the firmware to reference the new
* target buffer.
*/
-int iwl_rx_queue_restock(struct iwl_priv *priv)
+void iwl_rx_queue_restock(struct iwl_priv *priv)
{
struct iwl_rx_queue *rxq = &priv->rxq;
struct list_head *element;
struct iwl_rx_mem_buffer *rxb;
unsigned long flags;
int write;
- int ret = 0;
spin_lock_irqsave(&rxq->lock, flags);
write = rxq->write & ~0x7;
@@ -220,10 +217,8 @@ int iwl_rx_queue_restock(struct iwl_priv *priv)
spin_lock_irqsave(&rxq->lock, flags);
rxq->need_update = 1;
spin_unlock_irqrestore(&rxq->lock, flags);
- ret = iwl_rx_queue_update_write_ptr(priv, rxq);
+ iwl_rx_queue_update_write_ptr(priv, rxq);
}
-
- return ret;
}
EXPORT_SYMBOL(iwl_rx_queue_restock);
@@ -350,10 +345,10 @@ void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
}
}
- pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
- rxq->dma_addr);
- pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
- rxq->rb_stts, rxq->rb_stts_dma);
+ dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
+ rxq->dma_addr);
+ dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
+ rxq->rb_stts, rxq->rb_stts_dma);
rxq->bd = NULL;
rxq->rb_stts = NULL;
}
@@ -362,7 +357,7 @@ EXPORT_SYMBOL(iwl_rx_queue_free);
int iwl_rx_queue_alloc(struct iwl_priv *priv)
{
struct iwl_rx_queue *rxq = &priv->rxq;
- struct pci_dev *dev = priv->pci_dev;
+ struct device *dev = &priv->pci_dev->dev;
int i;
spin_lock_init(&rxq->lock);
@@ -370,12 +365,13 @@ int iwl_rx_queue_alloc(struct iwl_priv *priv)
INIT_LIST_HEAD(&rxq->rx_used);
/* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
- rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
+ rxq->bd = dma_alloc_coherent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr,
+ GFP_KERNEL);
if (!rxq->bd)
goto err_bd;
- rxq->rb_stts = pci_alloc_consistent(dev, sizeof(struct iwl_rb_status),
- &rxq->rb_stts_dma);
+ rxq->rb_stts = dma_alloc_coherent(dev, sizeof(struct iwl_rb_status),
+ &rxq->rb_stts_dma, GFP_KERNEL);
if (!rxq->rb_stts)
goto err_rb;
@@ -392,8 +388,8 @@ int iwl_rx_queue_alloc(struct iwl_priv *priv)
return 0;
err_rb:
- pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
- rxq->dma_addr);
+ dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
+ rxq->dma_addr);
err_bd:
return -ENOMEM;
}
@@ -473,8 +469,8 @@ 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 +495,10 @@ 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 +508,24 @@ 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 +579,24 @@ 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 +616,15 @@ 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 +639,56 @@ 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_reset(priv, IWL_RF_RESET);
+ }
+ }
+
memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
set_bit(STATUS_STATISTICS, &priv->status);
@@ -638,11 +716,13 @@ 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");
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 12:15:55 +0100