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iwlagn: update write pointers for all tx queues after wakeup

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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>
This commit is contained in:
Ben Cahill 2009-10-30 14:36:09 -07:00 committed by John W. Linville
parent c72cd19fab
commit c2e61da29d
1 changed files with 8 additions and 9 deletions
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17
drivers/net/wireless/iwlwifi/iwl-agn.c
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@ -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;
}