| /****************************************************************************** |
| * |
| * This file is provided under a dual license. When you use or |
| * distribute this software, you may choose to be licensed under |
| * version 2 of the GNU General Public License ("GPLv2 License") |
| * or BSD License. |
| * |
| * GPLv2 License |
| * |
| * Copyright(C) 2016 MediaTek Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * See http://www.gnu.org/licenses/gpl-2.0.html for more details. |
| * |
| * BSD LICENSE |
| * |
| * Copyright(C) 2016 MediaTek Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of the copyright holder nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| *****************************************************************************/ |
| /* |
| ** Id: @(#) gl_rst.c@@ |
| */ |
| |
| /*! \file gl_rst.c |
| * \brief Main routines for supporintg MT6620 whole-chip reset mechanism |
| * |
| * This file contains the support routines of Linux driver for MediaTek Inc. 802.11 |
| * Wireless LAN Adapters. |
| */ |
| |
| |
| /******************************************************************************* |
| * C O M P I L E R F L A G S |
| ******************************************************************************** |
| */ |
| |
| /******************************************************************************* |
| * E X T E R N A L R E F E R E N C E S |
| ******************************************************************************** |
| */ |
| #include <linux/kernel.h> |
| #include <linux/workqueue.h> |
| |
| #include "precomp.h" |
| #include "gl_rst.h" |
| |
| #if CFG_CHIP_RESET_SUPPORT |
| |
| /******************************************************************************* |
| * C O N S T A N T S |
| ******************************************************************************** |
| */ |
| |
| /******************************************************************************* |
| * P U B L I C D A T A |
| ******************************************************************************** |
| */ |
| BOOLEAN fgIsResetting = FALSE; |
| UINT_32 g_IsNeedDoChipReset; |
| |
| /******************************************************************************* |
| * P R I V A T E D A T A |
| ******************************************************************************** |
| */ |
| static RESET_STRUCT_T wifi_rst; |
| |
| static void mtk_wifi_reset(struct work_struct *work); |
| |
| /******************************************************************************* |
| * F U N C T I O N D E C L A R A T I O N S |
| ******************************************************************************** |
| */ |
| static void *glResetCallback(ENUM_WMTDRV_TYPE_T eSrcType, |
| ENUM_WMTDRV_TYPE_T eDstType, |
| ENUM_WMTMSG_TYPE_T eMsgType, void *prMsgBody, unsigned int u4MsgLength); |
| |
| /******************************************************************************* |
| * F U N C T I O N S |
| ******************************************************************************** |
| */ |
| /*----------------------------------------------------------------------------*/ |
| /*! |
| * @brief This routine is responsible for |
| * 1. register wifi reset callback |
| * 2. initialize wifi reset work |
| * |
| * @param none |
| * |
| * @retval none |
| */ |
| /*----------------------------------------------------------------------------*/ |
| VOID glResetInit(VOID) |
| { |
| /* 1. Register reset callback */ |
| mtk_wcn_wmt_msgcb_reg(WMTDRV_TYPE_WIFI, (PF_WMT_CB) glResetCallback); |
| |
| /* 2. Initialize reset work */ |
| INIT_WORK(&(wifi_rst.rst_work), mtk_wifi_reset); |
| |
| } |
| |
| /*----------------------------------------------------------------------------*/ |
| /*! |
| * @brief This routine is responsible for |
| * 1. deregister wifi reset callback |
| * |
| * @param none |
| * |
| * @retval none |
| */ |
| /*----------------------------------------------------------------------------*/ |
| VOID glResetUninit(VOID) |
| { |
| /* 1. Deregister reset callback */ |
| mtk_wcn_wmt_msgcb_unreg(WMTDRV_TYPE_WIFI); |
| |
| } |
| |
| /*----------------------------------------------------------------------------*/ |
| /*! |
| * @brief This routine is invoked when there is reset messages indicated |
| * |
| * @param eSrcType |
| * eDstType |
| * eMsgType |
| * prMsgBody |
| * u4MsgLength |
| * |
| * @retval |
| */ |
| /*----------------------------------------------------------------------------*/ |
| static void *glResetCallback(ENUM_WMTDRV_TYPE_T eSrcType, |
| ENUM_WMTDRV_TYPE_T eDstType, |
| ENUM_WMTMSG_TYPE_T eMsgType, void *prMsgBody, unsigned int u4MsgLength) |
| { |
| switch (eMsgType) { |
| case WMTMSG_TYPE_RESET: |
| if (u4MsgLength == sizeof(ENUM_WMTRSTMSG_TYPE_T)) { |
| P_ENUM_WMTRSTMSG_TYPE_T prRstMsg = (P_ENUM_WMTRSTMSG_TYPE_T) prMsgBody; |
| |
| switch (*prRstMsg) { |
| case WMTRSTMSG_RESET_START: |
| DBGLOG(INIT, WARN, "Whole chip reset start!\n"); |
| fgIsResetting = TRUE; |
| wifi_reset_start(); |
| break; |
| |
| case WMTRSTMSG_RESET_END: |
| DBGLOG(INIT, WARN, "Whole chip reset end!\n"); |
| fgIsResetting = FALSE; |
| wifi_rst.rst_data = RESET_SUCCESS; |
| schedule_work(&(wifi_rst.rst_work)); |
| break; |
| |
| case WMTRSTMSG_RESET_END_FAIL: |
| DBGLOG(INIT, WARN, "Whole chip reset fail!\n"); |
| fgIsResetting = FALSE; |
| wifi_rst.rst_data = RESET_FAIL; |
| schedule_work(&(wifi_rst.rst_work)); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return NULL; |
| } |
| |
| /*----------------------------------------------------------------------------*/ |
| /*! |
| * @brief This routine is called for wifi reset |
| * |
| * @param skb |
| * info |
| * |
| * @retval 0 |
| * nonzero |
| */ |
| /*----------------------------------------------------------------------------*/ |
| static void mtk_wifi_reset(struct work_struct *work) |
| { |
| RESET_STRUCT_T *rst = container_of(work, RESET_STRUCT_T, rst_work); |
| |
| wifi_reset_end(rst->rst_data); |
| } |
| |
| /*----------------------------------------------------------------------------*/ |
| /*! |
| * @brief This routine is called for generating reset request to WMT |
| * |
| * @param None |
| * |
| * @retval None |
| */ |
| /*----------------------------------------------------------------------------*/ |
| VOID glSendResetRequest(VOID) |
| { |
| /* WMT thread would trigger whole chip reset itself */ |
| } |
| |
| /*----------------------------------------------------------------------------*/ |
| /*! |
| * @brief This routine is called for checking if connectivity chip is resetting |
| * |
| * @param None |
| * |
| * @retval TRUE |
| * FALSE |
| */ |
| /*----------------------------------------------------------------------------*/ |
| BOOLEAN kalIsResetting(VOID) |
| { |
| return fgIsResetting; |
| } |
| |
| BOOLEAN glResetTrigger(P_ADAPTER_T prAdapter) |
| { |
| BOOLEAN fgResult = TRUE; |
| |
| #if CFG_WMT_RESET_API_SUPPORT |
| if (kalIsResetting()) { |
| DBGLOG(INIT, ERROR, |
| "Skip triggering whole-chip reset during resetting! Chip[%04X E%u]\n", |
| MTK_CHIP_REV, wlanGetEcoVersion(prAdapter)); |
| DBGLOG(INIT, ERROR, |
| "FW Ver DEC[%u.%u] HEX[%x.%x], Driver Ver[%u.%u]\n", |
| (prAdapter->rVerInfo.u2FwOwnVersion >> 8), |
| (prAdapter->rVerInfo.u2FwOwnVersion & BITS(0, 7)), |
| (prAdapter->rVerInfo.u2FwOwnVersion >> 8), |
| (prAdapter->rVerInfo.u2FwOwnVersion & BITS(0, 7)), |
| (prAdapter->rVerInfo.u2FwPeerVersion >> 8), (prAdapter->rVerInfo.u2FwPeerVersion & BITS(0, 7))); |
| |
| fgResult = TRUE; |
| } else { |
| DBGLOG(INIT, ERROR, |
| "Trigger whole-chip reset! Chip[%04X E%u] FW Ver DEC[%u.%u] HEX[%x.%x], Driver Ver[%u.%u]\n", |
| MTK_CHIP_REV, |
| wlanGetEcoVersion(prAdapter), |
| (prAdapter->rVerInfo.u2FwOwnVersion >> 8), |
| (prAdapter->rVerInfo.u2FwOwnVersion & BITS(0, 7)), |
| (prAdapter->rVerInfo.u2FwOwnVersion >> 8), |
| (prAdapter->rVerInfo.u2FwOwnVersion & BITS(0, 7)), |
| (prAdapter->rVerInfo.u2FwPeerVersion >> 8), (prAdapter->rVerInfo.u2FwPeerVersion & BITS(0, 7))); |
| |
| fgResult = mtk_wcn_wmt_do_reset(WMTDRV_TYPE_WIFI); |
| } |
| #endif |
| |
| return fgResult; |
| } |
| |
| #else |
| |
| BOOLEAN kalIsResetting(VOID) |
| { |
| return FALSE; |
| } |
| |
| #endif |