diff options
| author | Ben Cahill <ben.m.cahill@intel.com> | 2009-10-30 14:36:09 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-11-02 15:39:45 -0500 |
| commit | c2e61da29d92df864dc5eec81d774199b02d7023 (patch) | |
| tree | 5f71654092971eafc3edb0d6259825b9ce642471 | |
| parent | c72cd19fab7983e97a1a41b7158e0b9f87a7fe96 (diff) | |
iwlagn: update write pointers for all tx queues after wakeup
Wakeup interrupt has been updating write pointers (indexes, actually) only
for tx queues 0-5. This is adequate just for 3945, but inadequate for other
devices, all of which have more tx queues. Now updating all tx/command queues,
so device can be aware of all new tx and host commands enqueued while
device was asleep.
This can potentially improve data traffic bandwidth and/or latency.
Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 7751a75d4dc..0cb95bfd15a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -890,6 +890,7 @@ static void iwl_irq_tasklet_legacy(struct iwl_priv *priv) u32 inta, handled = 0; u32 inta_fh; unsigned long flags; + u32 i; #ifdef CONFIG_IWLWIFI_DEBUG u32 inta_mask; #endif @@ -1007,19 +1008,17 @@ static void iwl_irq_tasklet_legacy(struct iwl_priv *priv) handled |= CSR_INT_BIT_SW_ERR; } - /* uCode wakes up after power-down sleep */ + /* + * uCode wakes up after power-down sleep. + * Tell device about any new tx or host commands enqueued, + * and about any Rx buffers made available while asleep. + */ if (inta & CSR_INT_BIT_WAKEUP) { IWL_DEBUG_ISR(priv, "Wakeup interrupt\n"); iwl_rx_queue_update_write_ptr(priv, &priv->rxq); - iwl_txq_update_write_ptr(priv, &priv->txq[0]); - iwl_txq_update_write_ptr(priv, &priv->txq[1]); - iwl_txq_update_write_ptr(priv, &priv->txq[2]); - iwl_txq_update_write_ptr(priv, &priv->txq[3]); - iwl_txq_update_write_ptr(priv, &priv->txq[4]); - iwl_txq_update_write_ptr(priv, &priv->txq[5]); - + for (i = 0; i < priv->hw_params.max_txq_num; i++) + iwl_txq_update_write_ptr(priv, &priv->txq[i]); priv->isr_stats.wakeup++; - handled |= CSR_INT_BIT_WAKEUP; } |