diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-30 12:37:35 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-30 12:37:35 -0800 |
commit | c3bf4906fba0d8871572b3f50fc036aade093e4d (patch) | |
tree | 90d673b38febfa503085bba10515f6bc51b490a0 /drivers/net/wireless/iwlwifi/iwl3945-base.c | |
parent | f39edadd1533713a5ed8ba31887ea6c93d137083 (diff) | |
parent | 7f9d3577e2603ca279c3176b696eba392f21cbe2 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (74 commits)
Revert "b43: Enforce DMA descriptor memory constraints"
iwmc3200wifi: fix array out-of-boundary access
wl1251: timeout one too soon in wl1251_boot_run_firmware()
mac80211: fix propagation of failed hardware reconfigurations
mac80211: fix race with suspend and dynamic_ps_disable_work
ath9k: fix missed error codes in the tx status check
ath9k: wake hardware during AMPDU TX actions
ath9k: wake hardware for interface IBSS/AP/Mesh removal
ath9k: fix suspend by waking device prior to stop
cfg80211: fix error path in cfg80211_wext_siwscan
wl1271_cmd.c: cleanup char => u8
iwlwifi: Storage class should be before const qualifier
ath9k: Storage class should be before const qualifier
cfg80211: fix race between deauth and assoc response
wireless: remove remaining qual code
rt2x00: Add USB ID for Linksys WUSB 600N rev 2.
ath5k: fix SWI calibration interrupt storm
mac80211: fix ibss join with fixed-bssid
libertas: Remove carrier signaling from the scan code
orinoco: fix GFP_KERNEL in orinoco_set_key with interrupts disabled
...
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl3945-base.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl3945-base.c | 68 |
1 files changed, 14 insertions, 54 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 2a28a1f8b1f..f8e4e4b18d0 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -548,6 +548,9 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) txq = &priv->txq[txq_id]; q = &txq->q; + if ((iwl_queue_space(q) < q->high_mark)) + goto drop; + spin_lock_irqsave(&priv->lock, flags); idx = get_cmd_index(q, q->write_ptr, 0); @@ -812,7 +815,7 @@ static int iwl3945_get_measurement(struct iwl_priv *priv, break; } - free_pages(cmd.reply_page, priv->hw_params.rx_page_order); + iwl_free_pages(priv, cmd.reply_page); return rc; } @@ -1198,9 +1201,7 @@ void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, PAGE_SIZE << priv->hw_params.rx_page_order, PCI_DMA_FROMDEVICE); - priv->alloc_rxb_page--; - __free_pages(rxq->pool[i].page, - priv->hw_params.rx_page_order); + __iwl_free_pages(priv, rxq->pool[i].page); rxq->pool[i].page = NULL; } list_add_tail(&rxq->pool[i].list, &rxq->rx_used); @@ -1247,10 +1248,8 @@ static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rx pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, PAGE_SIZE << priv->hw_params.rx_page_order, PCI_DMA_FROMDEVICE); - __free_pages(rxq->pool[i].page, - priv->hw_params.rx_page_order); + __iwl_free_pages(priv, rxq->pool[i].page); rxq->pool[i].page = NULL; - priv->alloc_rxb_page--; } } @@ -1300,47 +1299,6 @@ int iwl3945_calc_db_from_ratio(int sig_ratio) 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 * @@ -1688,7 +1646,7 @@ void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log) } #ifdef CONFIG_IWLWIFI_DEBUG - if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)) + if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log) size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES) ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size; #else @@ -3867,7 +3825,6 @@ static int iwl3945_init_drv(struct iwl_priv *priv) priv->retry_rate = 1; priv->ibss_beacon = NULL; - spin_lock_init(&priv->lock); spin_lock_init(&priv->sta_lock); spin_lock_init(&priv->hcmd_lock); @@ -3936,9 +3893,11 @@ static int iwl3945_setup_mac(struct iwl_priv *priv) /* Tell mac80211 our characteristics */ hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM | - IEEE80211_HW_SPECTRUM_MGMT | - IEEE80211_HW_SUPPORTS_PS | - IEEE80211_HW_SUPPORTS_DYNAMIC_PS; + IEEE80211_HW_SPECTRUM_MGMT; + + if (!priv->cfg->broken_powersave) + hw->flags |= IEEE80211_HW_SUPPORTS_PS | + IEEE80211_HW_SUPPORTS_DYNAMIC_PS; hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | @@ -4057,10 +4016,11 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e * PCI Tx retries from interfering with C3 CPU state */ pci_write_config_byte(pdev, 0x41, 0x00); - /* this spin lock will be used in apm_ops.init and EEPROM access + /* these spin locks will be used in apm_ops.init and EEPROM access * we should init now */ spin_lock_init(&priv->reg_lock); + spin_lock_init(&priv->lock); /*********************** * 4. Read EEPROM |