From: Pradeep Nemavat Date: Thu, 21 Apr 2011 11:04:57 +0000 (+0530) Subject: mwl8k: Add timestamp information for tx packets X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=566875db5058f582ea56da891f9c3cabc01efff5;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git 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 Signed-off-by: Nishant Sarmukadam Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c index 33da25a349b7..93fe1bd91c36 100644 --- a/drivers/net/wireless/mwl8k.c +++ b/drivers/net/wireless/mwl8k.c @@ -74,6 +74,14 @@ MODULE_PARM_DESC(ap_mode_default, #define MWL8K_A2H_INT_RX_READY (1 << 1) #define MWL8K_A2H_INT_TX_DONE (1 << 0) +/* HW micro second timer register + * located at offset 0xA600. This + * will be used to timestamp tx + * packets. + */ + +#define MWL8K_HW_TIMER_REGISTER 0x0000a600 + #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \ MWL8K_A2H_INT_CHNL_SWITCHED | \ MWL8K_A2H_INT_QUEUE_EMPTY | \ @@ -1972,6 +1980,11 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id; else tx->peer_id = 0; + + if (priv->ap_fw) + tx->timestamp = cpu_to_le32(ioread32(priv->regs + + MWL8K_HW_TIMER_REGISTER)); + wmb(); tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);