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/***************************************************************************/
/* Copyright (c) 2024 Microsoft Corporation */
/* Copyright (c) 2026 Eclipse ThreadX contributors */
/* */
/* This program and the accompanying materials are made available under */
/* the terms of the MIT License which is available at */
/* https://opensource.org/licenses/MIT. */
/* */
/* SPDX-License-Identifier: MIT */
/***************************************************************************/
/* Implements FX driver entry if FX_MEDIA not integrated in UX Host Class Storage. */
#include <stdio.h>
#include "tx_api.h"
#include "ux_api.h"
#include "ux_system.h"
#include "ux_utility.h"
#include "fx_api.h"
#include "ux_device_class_storage.h"
#include "ux_device_stack.h"
#include "ux_host_stack.h"
#include "ux_host_class_storage.h"
#if defined(UX_HOST_CLASS_STORAGE_NO_FILEX)
VOID _ux_host_class_storage_driver_entry(FX_MEDIA *media);
VOID _ux_host_class_storage_media_insert(UX_HOST_CLASS_STORAGE_MEDIA *storage_media, ULONG format_open);
VOID _ux_host_class_storage_media_remove(UX_HOST_CLASS_STORAGE_MEDIA *storage_media);
FX_MEDIA *_ux_host_class_storage_driver_medias(void);
FX_MEDIA *_ux_host_class_storage_driver_media(INT i);
UCHAR *_ux_host_class_storage_driver_media_memory(INT i);
INT _ux_host_class_storage_driver_media_index(FX_MEDIA *media);
INT _ux_host_class_storage_media_index(UX_HOST_CLASS_STORAGE_MEDIA *storage_media);
FX_MEDIA *_ux_host_class_storage_media_fx_media(UX_HOST_CLASS_STORAGE_MEDIA *storage_media);
UCHAR *_ux_host_class_storage_media_fx_media_memory(UX_HOST_CLASS_STORAGE_MEDIA *storage_media);
static FX_MEDIA medias[UX_HOST_CLASS_STORAGE_MAX_MEDIA];
static UCHAR medias_memories[UX_HOST_CLASS_STORAGE_MAX_MEDIA][UX_HOST_CLASS_STORAGE_MEMORY_BUFFER_SIZE];
static VOID (*_ux_host_class_storage_media_read_write_notify)(UINT, UINT,
UX_HOST_CLASS_STORAGE *, ULONG, ULONG, UCHAR*) = UX_NULL;
VOID _ux_host_class_storage_driver_read_write_notify(
VOID (*func)(UINT, UINT, UX_HOST_CLASS_STORAGE *, ULONG, ULONG, UCHAR*))
{
_ux_host_class_storage_media_read_write_notify = func;
}
FX_MEDIA *_ux_host_class_storage_driver_medias(void)
{
return(medias);
}
FX_MEDIA *_ux_host_class_storage_driver_media(INT i)
{
return(&medias[i]);
}
UCHAR *_ux_host_class_storage_driver_media_memory(INT i)
{
return(medias_memories[i]);
}
INT _ux_host_class_storage_driver_media_index(FX_MEDIA *media)
{
INT media_index;
if (media < medias)
return(-1);
media_index = (INT)(media - medias);
if (media_index >= UX_HOST_CLASS_STORAGE_MAX_MEDIA)
return(-1);
return(media_index);
}
INT _ux_host_class_storage_media_index(UX_HOST_CLASS_STORAGE_MEDIA *storage_media)
{
UX_HOST_CLASS_STORAGE *storage;
UX_HOST_CLASS *class_inst;
UX_HOST_CLASS_STORAGE_MEDIA *storage_medias;
if (storage_media == UX_NULL)
return(-1);
if (storage_media -> ux_host_class_storage_media_storage == UX_NULL)
return(-1);
storage = storage_media -> ux_host_class_storage_media_storage;
if (storage == UX_NULL)
return(-1);
class_inst = storage -> ux_host_class_storage_class;
if (class_inst == UX_NULL)
return(-1);
storage_medias = (UX_HOST_CLASS_STORAGE_MEDIA *)class_inst -> ux_host_class_media;
if (storage_media < storage_medias)
return(-1);
return((INT)(storage_media - storage_medias));
}
FX_MEDIA *_ux_host_class_storage_media_fx_media(UX_HOST_CLASS_STORAGE_MEDIA *storage_media)
{
INT media_index = _ux_host_class_storage_media_index(storage_media);
if (media_index < 0)
return(UX_NULL);
return(&medias[media_index]);
}
UCHAR *_ux_host_class_storage_media_fx_media_memory(UX_HOST_CLASS_STORAGE_MEDIA *storage_media)
{
INT media_index = _ux_host_class_storage_media_index(storage_media);
if (media_index < 0)
return(UX_NULL);
return(medias_memories[media_index]);
}
VOID _ux_host_class_storage_media_insert(UX_HOST_CLASS_STORAGE_MEDIA *storage_media, ULONG format_open)
{
INT media_index = _ux_host_class_storage_media_index(storage_media);
UINT rc = 0;
if (media_index < 0)
{
return;
}
medias[media_index].fx_media_driver_info = storage_media;
/* Format. */
if (format_open > 1)
{
rc = fx_media_format(&medias[media_index],
_ux_host_class_storage_driver_entry,
storage_media,
medias_memories[media_index], UX_HOST_CLASS_STORAGE_MEMORY_BUFFER_SIZE,
"USB DISK", 2, 512, 0,
storage_media -> ux_host_class_storage_media_number_sectors,
storage_media -> ux_host_class_storage_media_sector_size,
4,
1, 1);
if (rc != UX_SUCCESS)
{
printf("%s:%d media_format error 0x%x\n", __FILE__, __LINE__, rc);
}
}
/* Open. */
if (format_open > 0 && rc == 0)
{
/* Open the media. */
rc = fx_media_open(&medias[media_index], UX_HOST_CLASS_STORAGE_MEDIA_NAME,
_ux_host_class_storage_driver_entry,
storage_media,
medias_memories[media_index],
UX_HOST_CLASS_STORAGE_MEMORY_BUFFER_SIZE);
if (rc != UX_SUCCESS)
{
printf("%s:%d media_open error 0x%x\n", __FILE__, __LINE__, rc);
}
}
if (rc)
{
/* Inserted but not ready. */
medias[media_index].fx_media_id = 0;
}
else
{
}
}
VOID _ux_host_class_storage_media_remove(UX_HOST_CLASS_STORAGE_MEDIA *storage_media)
{
INT media_index = _ux_host_class_storage_media_index(storage_media);
UINT rc = 0;
if (media_index < 0)
{
return;
}
if (medias[media_index].fx_media_driver_info == storage_media)
{
rc = fx_media_close(&medias[media_index]);
medias[media_index].fx_media_id = 0; /* Keeping compatible with integrated FX_MEDIA. */
medias[media_index].fx_media_driver_info = UX_NULL;
if (rc != UX_SUCCESS)
{
printf("%s:%d media_close error %x\n", __FILE__, __LINE__, rc);
}
}
}
VOID _ux_host_class_storage_driver_entry(FX_MEDIA *media)
{
UINT status;
UX_HOST_CLASS_STORAGE *storage;
UX_HOST_CLASS_STORAGE_MEDIA *storage_media;
/* Get the pointer to the storage media instance. */
storage_media = (UX_HOST_CLASS_STORAGE_MEDIA *) media -> fx_media_driver_info;
/* Get storage instance. */
storage = storage_media -> ux_host_class_storage_media_storage;
/* Ensure the instance is valid. */
if ((storage -> ux_host_class_storage_state != UX_HOST_CLASS_INSTANCE_LIVE) &&
(storage -> ux_host_class_storage_state != UX_HOST_CLASS_INSTANCE_MOUNTING))
{
/* Class instance is invalid. Return an error! */
media -> fx_media_driver_status = FX_PTR_ERROR;
return;
}
/* Protect Thread reentry to this instance and select media LUN for further access. */
status = _ux_host_class_storage_media_lock(storage_media, UX_WAIT_FOREVER);
if (status != UX_SUCCESS)
{
printf("%s:%d lock fail 0x%x!\n", __FILE__, __LINE__, status);
media -> fx_media_driver_status = FX_IO_ERROR;
return;
}
/* Look at the request specified by the FileX caller. */
switch (media -> fx_media_driver_request)
{
case FX_DRIVER_READ:
/* Read one or more sectors. */
status = _ux_host_class_storage_media_read(storage, media -> fx_media_driver_logical_sector,
media -> fx_media_driver_sectors, media -> fx_media_driver_buffer);
if (_ux_host_class_storage_media_read_write_notify)
_ux_host_class_storage_media_read_write_notify(FX_DRIVER_READ, status,
storage,
media -> fx_media_driver_logical_sector,
media -> fx_media_driver_sectors,
media -> fx_media_driver_buffer);
/* Check completion status. */
if (status == UX_SUCCESS)
media -> fx_media_driver_status = FX_SUCCESS;
else
media -> fx_media_driver_status = _ux_host_class_storage_sense_code_translate(storage, status);
break;
case FX_DRIVER_WRITE:
/* Write one or more sectors. */
status = _ux_host_class_storage_media_write(storage, media -> fx_media_driver_logical_sector,
media -> fx_media_driver_sectors, media -> fx_media_driver_buffer);
if (_ux_host_class_storage_media_read_write_notify)
_ux_host_class_storage_media_read_write_notify(FX_DRIVER_WRITE, status,
storage,
media -> fx_media_driver_logical_sector,
media -> fx_media_driver_sectors,
media -> fx_media_driver_buffer);
/* Check completion status. */
if (status == UX_SUCCESS)
media -> fx_media_driver_status = FX_SUCCESS;
else
media -> fx_media_driver_status = _ux_host_class_storage_sense_code_translate(storage,status);
break;
case FX_DRIVER_FLUSH:
/* Nothing to do. Just return a good status! */
media -> fx_media_driver_status = FX_SUCCESS;
break;
case FX_DRIVER_ABORT:
/* Nothing to do. Just return a good status! */
media -> fx_media_driver_status = FX_SUCCESS;
break;
case FX_DRIVER_INIT:
/* Check for media protection. We must do this operation here because FileX clears all the
media fields before init. */
if (storage -> ux_host_class_storage_write_protected_media == UX_TRUE)
/* The media is Write Protected. We tell FileX. */
media -> fx_media_driver_write_protect = UX_TRUE;
/* This function always succeeds. */
media -> fx_media_driver_status = FX_SUCCESS;
break;
case FX_DRIVER_UNINIT:
/* Nothing to do. Just return a good status! */
media -> fx_media_driver_status = FX_SUCCESS;
break;
case FX_DRIVER_BOOT_READ:
/* Read the media boot sector. */
status = _ux_host_class_storage_media_read(storage, 0, 1,
media -> fx_media_driver_buffer);
if (_ux_host_class_storage_media_read_write_notify)
_ux_host_class_storage_media_read_write_notify(FX_DRIVER_READ, status,
storage, 0, 1,
media -> fx_media_driver_buffer);
/* Check completion status. */
if (status == UX_SUCCESS)
media -> fx_media_driver_status = FX_SUCCESS;
else
media -> fx_media_driver_status = _ux_host_class_storage_sense_code_translate(storage,status);
break;
case FX_DRIVER_BOOT_WRITE:
/* Write the boot sector. */
status = _ux_host_class_storage_media_write(storage, 0, 1,
media -> fx_media_driver_buffer);
if (_ux_host_class_storage_media_read_write_notify)
_ux_host_class_storage_media_read_write_notify(FX_DRIVER_WRITE, status,
storage, 0, 1,
media -> fx_media_driver_buffer);
/* Check completion status. */
if (status == UX_SUCCESS)
media -> fx_media_driver_status = FX_SUCCESS;
else
media -> fx_media_driver_status = _ux_host_class_storage_sense_code_translate(storage, status);
break;
default:
/* Invalid request from FileX */
media -> fx_media_driver_status = FX_IO_ERROR;
break;
}
/* Unprotect thread reentry to this instance. */
_ux_host_class_storage_media_unlock(storage_media);
}
#endif
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