4ef9913568
In case of driver unload, there can be a race condition since the timer for processing monitor status ring can run in parallel to the unload time wow ack response handler, which is also flushing all the monitor status ring entries. To avoid this race condition, stop the monitor reap timer as a part of target suspend, and process all the outstanding entries in the montior status ring. This will make sure that the monitor status ring is processed from only one context at any given time. Change-Id: If61327c73fdddc414b3957b69ae986f2a26bb803 CRs-Fixed: 2677812
118 rindas
3.3 KiB
C
118 rindas
3.3 KiB
C
/*
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* Copyright (c) 2016-2017, 2019-2020 The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/**
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* @file cdp_txrx_bus.h
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* @brief Define the host data path bus related functions
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*/
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#ifndef _CDP_TXRX_BUS_H_
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#define _CDP_TXRX_BUS_H_
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/**
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* cdp_bus_suspend() - suspend bus
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* @soc: data path soc handle
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* @pdev_id: id of dp pdev handle
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*
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* suspend bus
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*
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* return QDF_STATUS_SUCCESS suspend is not implemented or suspend done
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*/
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static inline QDF_STATUS cdp_bus_suspend(ol_txrx_soc_handle soc,
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uint8_t pdev_id)
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{
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if (!soc || !soc->ops || !soc->ops->bus_ops) {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
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"%s invalid instance", __func__);
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return QDF_STATUS_E_INVAL;
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}
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if (soc->ops->bus_ops->bus_suspend)
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return soc->ops->bus_ops->bus_suspend(soc, pdev_id);
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return QDF_STATUS_E_NOSUPPORT;
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}
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/**
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* cdp_bus_resume() - resume bus
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* @soc: data path soc handle
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* @pdev_id: id of dp pdev handle
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*
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* resume bus
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*
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* return QDF_STATUS_SUCCESS resume is not implemented or suspend done
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*/
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static inline QDF_STATUS cdp_bus_resume(ol_txrx_soc_handle soc,
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uint8_t pdev_id)
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{
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if (!soc || !soc->ops || !soc->ops->bus_ops) {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
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"%s invalid instance", __func__);
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return QDF_STATUS_E_INVAL;
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}
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if (soc->ops->bus_ops->bus_resume)
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return soc->ops->bus_ops->bus_resume(soc, pdev_id);
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return QDF_STATUS_E_NOSUPPORT;
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}
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/**
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* cdp_process_wow_ack() - Process wow ack response
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* @soc: data path soc handle
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* @pdev_id: id of dp pdev handle
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*
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* Do any required data path operations for target wow ack
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* suspend response.
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*
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* Return: None
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*/
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static inline void cdp_process_wow_ack_rsp(ol_txrx_soc_handle soc,
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uint8_t pdev_id)
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{
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if (!soc || !soc->ops || !soc->ops->bus_ops) {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
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"%s invalid instance", __func__);
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return;
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}
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if (soc->ops->bus_ops->process_wow_ack_rsp)
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return soc->ops->bus_ops->process_wow_ack_rsp(soc, pdev_id);
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}
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/**
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* cdp_process_target_suspend_req() - Process target suspend request
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* @soc: data path soc handle
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* @pdev_id: id of dp pdev handle
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*
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* Complete the datapath specific work before target suspend
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*
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* Return: None
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*/
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static inline void cdp_process_target_suspend_req(ol_txrx_soc_handle soc,
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uint8_t pdev_id)
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{
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if (!soc || !soc->ops || !soc->ops->bus_ops) {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
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"%s invalid instance", __func__);
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return;
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}
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if (soc->ops->bus_ops->process_target_suspend_req)
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return soc->ops->bus_ops->process_target_suspend_req(soc,
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pdev_id);
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}
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#endif /* _CDP_TXRX_BUS_H_ */
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