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/**HEADER********************************************************************
*
* Copyright (c) 2008, 2013 - 2014 Freescale Semiconductor;
* All Rights Reserved
*
* Copyright (c) 1989-2008 ARC International;
* All Rights Reserved
*
***************************************************************************
*
* THIS SOFTWARE IS PROVIDED BY FREESCALE "AS IS" AND ANY EXPRESSED OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL FREESCALE OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************
*
* $FileName: disk.c$
* $Version :
* $Date :
*
* Comments:
*
* @brief RAM Disk has been emulated via this Mass Storage Demo
*****************************************************************************/
/******************************************************************************
* Includes
*****************************************************************************/
#include "usb_device_config.h"
#include "usb.h"
#include "usb_device_stack_interface.h"
#include "disk.h"
#include "adapter_cfg.h"
#include "flash.h"
#include "fsl_device_registers.h"
#include "fsl_clock_manager.h"
#include "fsl_debug_console.h"
#include "fsl_port_hal.h"
#if USBCFG_DEV_COMPOSITE
#error This application requires USBCFG_DEV_COMPOSITE defined zero in usb_device_config.h. Please recompile usbd with this option.
#endif
#if !USBCFG_DEV_MSC
#error This application requires USBCFG_DEV_MSC defined none zero in usb_device_config.h. Please recompile usbd with this option.
#endif
#if HIGH_SPEED
#if !USBCFG_DEV_EHCI
#error This application requires USBCFG_DEV_EHCI defined none zero in usb_device_config.h. Please recompile usbd with this option.
#endif
#endif
/****************************************************************************
* Global Variables
****************************************************************************/
/* Add all the variables needed for disk.c to this structure */
extern usb_desc_request_notify_struct_t desc_callback;
msc_config_struct_t g_msd_config;
disk_struct_t g_disk;
uint8_t sector_buffer[LENGTH_OF_EACH_LAB];
/*****************************************************************************
* Local Types - None
*****************************************************************************/
/*****************************************************************************
* Local Functions Prototypes
*****************************************************************************/
void USB_App_Device_Callback(uint8_t event_type, void* val, void* arg);
uint8_t USB_App_Class_Callback
(uint8_t event_type,
uint16_t value,
uint8_t ** data,
uint32_t* size,
void* arg
);
/*****************************************************************************
* Local Variables
*****************************************************************************/
/*****************************************************************************
* Local Functions
*****************************************************************************/
/******************************************************************************
*
* @name USB_App_Device_Callback
*
* @brief This function handles the callback
*
* @param pointer :
* @param event_type : value of the event
* @param val : gives the configuration value
*
* @return None
*
*****************************************************************************/
void USB_App_Device_Callback(uint8_t event_type, void* val, void* arg)
{
if (event_type == USB_DEV_EVENT_BUS_RESET)
{
if (USB_OK == USB_Class_MSC_Get_Speed(g_disk.app_handle, &g_disk.speed))
{
USB_Desc_Set_Speed(g_disk.app_handle, g_disk.speed);
}
}
else if (event_type == USB_DEV_EVENT_ENUM_COMPLETE)
{
}
else if (event_type == USB_DEV_EVENT_ERROR)
{
/* add user code for error handling */
}
else if (event_type == USB_MSC_DEVICE_GET_SEND_BUFF_INFO)
{
if (NULL != val)
{
*((uint32_t *)val) = (uint32_t)DISK_SIZE_NORMAL;
}
}
else if (event_type == USB_MSC_DEVICE_GET_RECV_BUFF_INFO)
{
if (NULL != val)
{
*((uint32_t *)val) = (uint32_t)sizeof(sector_buffer);
}
}
return;
}
/******************************************************************************
*
* @name USB_App_Class_Callback
*
* @brief This function handles the callback
*
* @param pointer :
* @param event_type : value of the event
* @param val : gives the configuration value
*
* @return None
*
*****************************************************************************/
uint8_t USB_App_Class_Callback
(uint8_t event_type,
uint16_t value,
uint8_t ** data,
uint32_t* size,
void* arg
)
{
lba_app_struct_t* lba_data_ptr;
device_lba_info_struct_t* device_lba_info_ptr;
uint8_t error = USB_OK;
switch(event_type)
{
case USB_DEV_EVENT_DATA_RECEIVED:
lba_data_ptr = (lba_app_struct_t*) size;
debug_printf("USB_DEV_EVENT_DATA_RECEIVED lun %u size %u offset 0x%08x\r\n",
lba_data_ptr->lun, lba_data_ptr->size, lba_data_ptr->offset);
flash_write_sector((intptr_t)images[lba_data_ptr->lun] + lba_data_ptr->offset,
sector_buffer);
debug_printf("finished flash write\r\n");
g_disk.writing = FALSE;
break;
case USB_DEV_EVENT_SEND_COMPLETE:
lba_data_ptr = (lba_app_struct_t*) size;
break;
case USB_MSC_START_STOP_EJECT_MEDIA:
break;
case USB_MSC_DEVICE_READ_REQUEST:
lba_data_ptr = (lba_app_struct_t*) size;
if(data != NULL)
{
debug_printf("USB_MSC_DEVICE_READ_REQUEST lun %u size %u offset 0x%08x\r\n",
lba_data_ptr->lun, lba_data_ptr->size, lba_data_ptr->offset);
*data = images[lba_data_ptr->lun] + lba_data_ptr->offset;
}
break;
case USB_MSC_DEVICE_WRITE_REQUEST:
lba_data_ptr = (lba_app_struct_t*) size;
if(data != NULL) {
if (g_disk.writing) {
debug_printf("USB_MSC_DEVICE_WRITE_REQUEST busy\r\n");
*data = NULL;
// this is ignored!
//error = USBERR_ENDPOINT_STALLED;
} else if (lba_data_ptr->size > sizeof(sector_buffer)) {
debug_printf("USB_MSC_DEVICE_WRITE_REQUEST too big %u > %u\r\n",
lba_data_ptr->size, sizeof(sector_buffer));
*data = NULL;
} else {
debug_printf("USB_MSC_DEVICE_WRITE_REQUEST size %u offset 0x%08x\r\n",
lba_data_ptr->size, lba_data_ptr->offset);
g_disk.writing = TRUE;
*data = sector_buffer;
}
} else {
debug_printf("USB_MSC_DEVICE_WRITE_REQUEST no data\r\n");
}
break;
case USB_MSC_DEVICE_FORMAT_COMPLETE:
break;
case USB_MSC_DEVICE_REMOVAL_REQUEST:
break;
case USB_MSC_DEVICE_GET_INFO:
device_lba_info_ptr = (device_lba_info_struct_t*) size;
device_lba_info_ptr->total_lba_device_supports = TOTAL_LOGICAL_ADDRESS_BLOCKS_NORMAL;
device_lba_info_ptr->length_of_each_lab_of_device = LENGTH_OF_EACH_LAB;
device_lba_info_ptr->num_lun_supported = LOGICAL_UNIT_SUPPORTED;
break;
default:
break;
}
return error;
}
/******************************************************************************
*
* @name disk_init
*
* @brief This function is the entry for mouse (or other usage)
*
* @param None
*
* @return None
**
*****************************************************************************/
void disk_init()
{
OS_Mem_zero(&g_disk, sizeof(disk_struct_t));
OS_Mem_zero(&g_msd_config, sizeof(msc_config_struct_t));
/* Register the callbacks to lower layers */
g_msd_config.msc_application_callback.callback = USB_App_Device_Callback;
g_msd_config.msc_application_callback.arg = &g_disk.app_handle;
g_msd_config.class_specific_callback.callback = USB_App_Class_Callback;
g_msd_config.class_specific_callback.arg = &g_disk.app_handle;
g_msd_config.desc_callback_ptr = &desc_callback;
g_disk.speed = USB_SPEED_FULL;
/* Finally, Initialize the device and USB Stack layers*/
USB_Class_MSC_Init(CONTROLLER_ID, &g_msd_config, &g_disk.app_handle);
}
/* vim: set expandtab ts=4 sw=4: */
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