/******************************************************************************
*
- * 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.
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
+#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include "iwl-commands.h"
#include "iwl-sta.h"
#include "iwl-3945.h"
-#include "iwl-helpers.h"
#include "iwl-core.h"
+#include "iwl-helpers.h"
#include "iwl-dev.h"
+#include "iwl-spectrum.h"
/*
* module name, copyright, version, etc.
#define VD
#endif
-#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
-#define VS "s"
-#else
-#define VS
-#endif
-
-#define DRV_VERSION IWLWIFI_VERSION VD VS
-#define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
+/*
+ * add "s" to indicate spectrum measurement included.
+ * we add it here to be consistent with previous releases in which
+ * this was configurable.
+ */
+#define DRV_VERSION IWLWIFI_VERSION VD "s"
+#define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
#define DRV_AUTHOR "<ilw@linux.intel.com>"
MODULE_DESCRIPTION(DRV_DESCRIPTION);
static void iwl3945_unset_hw_params(struct iwl_priv *priv)
{
if (priv->shared_virt)
- pci_free_consistent(priv->pci_dev,
- sizeof(struct iwl3945_shared),
- priv->shared_virt,
- priv->shared_phys);
+ dma_free_coherent(&priv->pci_dev->dev,
+ sizeof(struct iwl3945_shared),
+ priv->shared_virt,
+ priv->shared_phys);
}
static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
u8 wait_write_ptr = 0;
u8 *qc = NULL;
unsigned long flags;
- int rc;
spin_lock_irqsave(&priv->lock, flags);
if (iwl_is_rfkill(priv)) {
/* Tell device the write index *just past* this latest filled TFD */
q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
- rc = iwl_txq_update_write_ptr(priv, txq);
+ iwl_txq_update_write_ptr(priv, txq);
spin_unlock_irqrestore(&priv->lock, flags);
- if (rc)
- return rc;
-
if ((iwl_queue_space(q) < q->high_mark)
&& priv->mac80211_registered) {
if (wait_write_ptr) {
return -1;
}
-#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
-
-#include "iwl-spectrum.h"
-
#define BEACON_TIME_MASK_LOW 0x00FFFFFF
#define BEACON_TIME_MASK_HIGH 0xFF000000
#define TIME_UNIT 1024
return rc;
}
-#endif
static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
+ priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
+ iwl_rx_spectrum_measure_notif;
priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
iwl_rx_pm_debug_statistics_notif;
priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
- iwl_setup_spectrum_handlers(priv);
iwl_setup_rx_scan_handlers(priv);
priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
* also updates the memory address in the firmware to reference the new
* target buffer.
*/
-static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
+static void iwl3945_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, rc;
+ int write;
spin_lock_irqsave(&rxq->lock, flags);
write = rxq->write & ~0x7;
spin_lock_irqsave(&rxq->lock, flags);
rxq->need_update = 1;
spin_unlock_irqrestore(&rxq->lock, flags);
- rc = iwl_rx_queue_update_write_ptr(priv, rxq);
- if (rc)
- return rc;
+ iwl_rx_queue_update_write_ptr(priv, rxq);
}
-
- return 0;
}
/**
}
}
- 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;
}
return (int)ratio2dB[sig_ratio];
}
-#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. */
-int iwl3945_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;
-}
-
/**
* iwl3945_rx_handle - Main entry function for receiving responses from uCode
*
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
if (!iwl3945_hw_valid_rtc_data_addr(base)) {
IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
- return pos;
+ return -EINVAL;
}
/* event log header */
bufsz = size * 48;
*buf = kmalloc(bufsz, GFP_KERNEL);
if (!*buf)
- return pos;
+ return -ENOMEM;
}
if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
/* if uCode has wrapped back to top of log,
mutex_unlock(&priv->mutex);
}
-static void iwl3945_bg_up(struct work_struct *data)
-{
- struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
-
- if (test_bit(STATUS_EXIT_PENDING, &priv->status))
- return;
-
- mutex_lock(&priv->mutex);
- __iwl3945_up(priv);
- mutex_unlock(&priv->mutex);
-}
-
static void iwl3945_bg_restart(struct work_struct *data)
{
struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
ieee80211_restart_hw(priv->hw);
} else {
iwl3945_down(priv);
- queue_work(priv->workqueue, &priv->up);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+ __iwl3945_up(priv);
+ mutex_unlock(&priv->mutex);
}
}
static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
store_filter_flags);
-#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
-
static ssize_t show_measurement(struct device *d,
struct device_attribute *attr, char *buf)
{
static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
show_measurement, store_measurement);
-#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
static ssize_t store_retry_rate(struct device *d,
struct device_attribute *attr,
init_waitqueue_head(&priv->wait_command_queue);
- INIT_WORK(&priv->up, iwl3945_bg_up);
INIT_WORK(&priv->restart, iwl3945_bg_restart);
INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
&dev_attr_dump_errors.attr,
&dev_attr_flags.attr,
&dev_attr_filter_flags.attr,
-#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
&dev_attr_measurement.attr,
-#endif
&dev_attr_retry_rate.attr,
&dev_attr_statistics.attr,
&dev_attr_status.attr,
.config = iwl_mac_config,
.configure_filter = iwl_configure_filter,
.set_key = iwl3945_mac_set_key,
- .get_tx_stats = iwl_mac_get_tx_stats,
.conf_tx = iwl_mac_conf_tx,
.reset_tsf = iwl_mac_reset_tsf,
.bss_info_changed = iwl_bss_info_changed,
INIT_LIST_HEAD(&priv->free_frames);
mutex_init(&priv->mutex);
+ mutex_init(&priv->sync_cmd_mutex);
/* Clear the driver's (not device's) station table */
iwl_clear_stations_table(priv);
priv->band = IEEE80211_BAND_2GHZ;
priv->iw_mode = NL80211_IFTYPE_STATION;
+ priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
iwl_reset_qos(priv);
spin_lock_init(&priv->reg_lock);
spin_lock_init(&priv->lock);
+ /*
+ * stop and reset the on-board processor just in case it is in a
+ * strange state ... like being left stranded by a primary kernel
+ * and this is now the kdump kernel trying to start up
+ */
+ iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
+
/***********************
* 4. Read EEPROM
* ********************/