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common/usbx_host_classes/src/ux_host_class_storage_device_support_check.c
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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Storage Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_storage.h"
#include "ux_host_stack.h"
#if defined(UX_HOST_STANDALONE) && defined(UX_HOST_CLASS_STORAGE_INCLUDE_LEGACY_PROTOCOL_SUPPORT)
#error Only Mass Storage BulkOnly (BO) is supported in standalone mode right now.
#endif
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_storage_device_support_check PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function verifies the support for the subclass and protocol */
/* of the USB device. If the device is supported it will update the */
/* storage class instances with the transport layer functions. */
/* */
/* INPUT */
/* */
/* storage Pointer to storage class */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Storage Class */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
/* resulting in version 6.1 */
/* 01-31-2022 Chaoqiong Xiao Modified comment(s), */
/* added standalone support, */
/* resulting in version 6.1.10 */
/* */
/**************************************************************************/
UINT _ux_host_class_storage_device_support_check(UX_HOST_CLASS_STORAGE *storage)
{
/* Check for the protocol type (BO/CB/CBI) and update the transport functions. */
switch(storage -> ux_host_class_storage_interface -> ux_interface_descriptor.bInterfaceProtocol)
{
case UX_HOST_CLASS_STORAGE_PROTOCOL_BO:
#if !defined(UX_HOST_STANDALONE)
storage -> ux_host_class_storage_transport = _ux_host_class_storage_transport_bo;
#endif
break;
#ifdef UX_HOST_CLASS_STORAGE_INCLUDE_LEGACY_PROTOCOL_SUPPORT
case UX_HOST_CLASS_STORAGE_PROTOCOL_CB:
#if !defined(UX_HOST_STANDALONE)
storage -> ux_host_class_storage_transport = _ux_host_class_storage_transport_cb;
#endif
break;
case UX_HOST_CLASS_STORAGE_PROTOCOL_CBI:
#if !defined(UX_HOST_STANDALONE)
/* In case of CBI, the subclass must be UFI, if not, default back to CB transport. */
if (storage -> ux_host_class_storage_interface -> ux_interface_descriptor.bInterfaceSubClass == UX_HOST_CLASS_STORAGE_SUBCLASS_UFI)
storage -> ux_host_class_storage_transport = _ux_host_class_storage_transport_cbi;
else
storage -> ux_host_class_storage_transport = _ux_host_class_storage_transport_cb;
#endif
break;
#endif
default:
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_HOST_CLASS_PROTOCOL_ERROR);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_PROTOCOL_ERROR, storage, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_HOST_CLASS_PROTOCOL_ERROR);
}
/* Check for the sub class and make sure we support it. */
switch (storage -> ux_host_class_storage_interface -> ux_interface_descriptor.bInterfaceSubClass)
{
#ifdef UX_HOST_CLASS_STORAGE_INCLUDE_LEGACY_PROTOCOL_SUPPORT
case UX_HOST_CLASS_STORAGE_SUBCLASS_UFI:
#endif
case UX_HOST_CLASS_STORAGE_SUBCLASS_RBC:
case UX_HOST_CLASS_STORAGE_SUBCLASS_SCSI:
case UX_HOST_CLASS_STORAGE_SUBCLASS_SFF8020:
case UX_HOST_CLASS_STORAGE_SUBCLASS_SFF8070:
return(UX_SUCCESS);
default:
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_HOST_CLASS_PROTOCOL_ERROR);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_PROTOCOL_ERROR, storage, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_HOST_CLASS_PROTOCOL_ERROR);
}
}