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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** USBX Component */ |
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/** */ |
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/** Host Stack */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/* Include necessary system files. */ |
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#define UX_SOURCE_CODE |
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#include "ux_api.h" |
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#include "ux_host_stack.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _ux_host_stack_rh_device_extraction PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Chaoqiong Xiao, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function handles a device extraction on a downstream port */ |
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/* of the root hub pointed by HCD. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* HCD Pointer to HCD structure */ |
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/* port_index Port index of insertion */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* Completion Status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _ux_host_stack_device_remove Remove device */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* USBX Components */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */ |
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/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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UINT _ux_host_stack_rh_device_extraction(UX_HCD *hcd, UINT port_index) |
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{ |
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/* If trace is enabled, insert this event into the trace buffer. */ |
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UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_RH_DEVICE_EXTRACTION, hcd, port_index, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0) |
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/* Ask the stack to remove the device, pass the value 0 as the parent root hub. */ |
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_ux_host_stack_device_remove(hcd, 0, port_index); |
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/* The device has been removed, so the port is free again. */ |
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hcd -> ux_hcd_rh_device_connection &= (ULONG)~(1 << port_index); |
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/* That command should never fail! */ |
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return(UX_SUCCESS); |
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} |
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