1 /****************************************************************************** 2 * 3 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of version 2 of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 ******************************************************************************/ 15 #define _RTL8723A_SRESET_C_ 16 17 #include <rtl8723a_sreset.h> 18 #include <rtl8723a_hal.h> 19 #include <usb_ops_linux.h> 20 rtl8723a_sreset_xmit_status_check(struct rtw_adapter * padapter)21void rtl8723a_sreset_xmit_status_check(struct rtw_adapter *padapter) 22 { 23 struct hal_data_8723a *pHalData = GET_HAL_DATA(padapter); 24 struct sreset_priv *psrtpriv = &pHalData->srestpriv; 25 26 unsigned long current_time; 27 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 28 unsigned int diff_time; 29 u32 txdma_status; 30 31 txdma_status = rtl8723au_read32(padapter, REG_TXDMA_STATUS); 32 if (txdma_status != 0) { 33 DBG_8723A("%s REG_TXDMA_STATUS:0x%08x\n", __func__, txdma_status); 34 rtw_sreset_reset(padapter); 35 } 36 37 current_time = jiffies; 38 39 if (0 == pxmitpriv->free_xmitbuf_cnt || 0 == pxmitpriv->free_xmit_extbuf_cnt) { 40 41 diff_time = jiffies_to_msecs(jiffies - psrtpriv->last_tx_time); 42 43 if (diff_time > 2000) { 44 if (psrtpriv->last_tx_complete_time == 0) { 45 psrtpriv->last_tx_complete_time = current_time; 46 } else { 47 diff_time = jiffies_to_msecs(jiffies - psrtpriv->last_tx_complete_time); 48 if (diff_time > 4000) { 49 DBG_8723A("%s tx hang\n", __func__); 50 rtw_sreset_reset(padapter); 51 } 52 } 53 } 54 } 55 } 56