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mwl8k: Add timestamp information for tx packets
Timestamp tx packets using a HW micro-second timer. This timestamp will be compared to the current timestamp in the hardware and if the difference is greater than 500ms, the packet will be dropped. Signed-off-by: Pradeep Nemavat <pnemavat@marvell.com> Signed-off-by: Nishant Sarmukadam <nishants@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -74,6 +74,14 @@ MODULE_PARM_DESC(ap_mode_default,
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#define MWL8K_A2H_INT_RX_READY (1 << 1)
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#define MWL8K_A2H_INT_TX_DONE (1 << 0)
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/* HW micro second timer register
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* located at offset 0xA600. This
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* will be used to timestamp tx
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* packets.
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*/
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#define MWL8K_HW_TIMER_REGISTER 0x0000a600
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#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
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MWL8K_A2H_INT_CHNL_SWITCHED | \
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MWL8K_A2H_INT_QUEUE_EMPTY | \
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@ -1972,6 +1980,11 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
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tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
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else
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tx->peer_id = 0;
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if (priv->ap_fw)
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tx->timestamp = cpu_to_le32(ioread32(priv->regs +
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MWL8K_HW_TIMER_REGISTER));
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wmb();
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tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
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