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common/usbx_host_classes/src/ux_host_class_storage_media_write.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)
VOID _ux_host_class_storage_write_initialize(UX_HOST_CLASS_STORAGE *storage,
ULONG sector_start, ULONG sector_count);
VOID
#else
static inline VOID
#endif
_ux_host_class_storage_write_initialize(UX_HOST_CLASS_STORAGE *storage,
ULONG sector_start, ULONG sector_count)
{
UCHAR *cbw;
UCHAR *cbw_cb;
ULONG command_length;
/* Use a pointer for the cbw, easier to manipulate. */
cbw = (UCHAR *)storage -> ux_host_class_storage_cbw;
cbw_cb = cbw + UX_HOST_CLASS_STORAGE_CBW_CB;
/* Get the Write Command Length. */
#ifdef UX_HOST_CLASS_STORAGE_INCLUDE_LEGACY_PROTOCOL_SUPPORT
if (storage -> ux_host_class_storage_interface -> ux_interface_descriptor.bInterfaceSubClass ==
UX_HOST_CLASS_STORAGE_SUBCLASS_UFI)
command_length = UX_HOST_CLASS_STORAGE_WRITE_COMMAND_LENGTH_UFI;
else
command_length = UX_HOST_CLASS_STORAGE_WRITE_COMMAND_LENGTH_SBC;
#else
command_length = UX_HOST_CLASS_STORAGE_WRITE_COMMAND_LENGTH_SBC;
#endif
/* Initialize the CBW for this command. */
_ux_host_class_storage_cbw_initialize(storage, UX_HOST_CLASS_STORAGE_DATA_OUT,
sector_count * storage -> ux_host_class_storage_sector_size,
command_length);
/* Prepare the MEDIA WRITE command block. */
*(cbw_cb + UX_HOST_CLASS_STORAGE_WRITE_OPERATION) = UX_HOST_CLASS_STORAGE_SCSI_WRITE16;
/* Store the sector start (LBA field). */
_ux_utility_long_put_big_endian(cbw_cb + UX_HOST_CLASS_STORAGE_WRITE_LBA, sector_start);
/* Store the number of sectors to write. */
_ux_utility_short_put_big_endian(cbw_cb + UX_HOST_CLASS_STORAGE_WRITE_TRANSFER_LENGTH, (USHORT) sector_count);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_storage_media_write PORTABLE C */
/* 6.1.10 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will write one or more logical sector to the media. */
/* */
/* INPUT */
/* */
/* storage Pointer to storage class */
/* sector_start Starting sector */
/* sector_count Number of sectors to write */
/* data_pointer Pointer to data to write */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_class_storage_cbw_initialize Initialize the CBW */
/* _ux_host_class_storage_transport Send command */
/* _ux_utility_long_put_big_endian Put 32-bit word */
/* _ux_utility_short_put_big_endian Put 16-bit word */
/* */
/* 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_media_write(UX_HOST_CLASS_STORAGE *storage, ULONG sector_start,
ULONG sector_count, UCHAR *data_pointer)
{
#if defined(UX_HOST_STANDALONE)
UINT status;
do {
status = _ux_host_class_storage_read_write_run(storage, UX_FALSE,
sector_start, sector_count, data_pointer);
} while(status == UX_STATE_WAIT);
return(storage -> ux_host_class_storage_status);
#else
UINT status;
UINT media_retry;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_CLASS_STORAGE_MEDIA_WRITE, storage, sector_start, sector_count, data_pointer, UX_TRACE_HOST_CLASS_EVENTS, 0, 0)
/* Initialize CBW. */
_ux_host_class_storage_write_initialize(storage, sector_start, sector_count);
/* Reset the retry count. */
media_retry = UX_HOST_CLASS_STORAGE_REQUEST_SENSE_RETRY;
/* We may need several attempts. */
while (media_retry-- != 0)
{
/* Send the command to transport layer. */
status = _ux_host_class_storage_transport(storage, data_pointer);
if (status != UX_SUCCESS)
return(status);
/* Check the sense code */
if (storage -> ux_host_class_storage_sense_code == UX_SUCCESS)
return(UX_SUCCESS);
}
/* Return sense error. */
return(UX_HOST_CLASS_STORAGE_SENSE_ERROR);
#endif
}