usbacm_ft.c

mtk 6225平台的usb程序！ 对想了解mtk平台usb的朋友会有帮助！

/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
*  THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
*  NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
*  SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
*  BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
*  LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
*  OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
*  MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. 
*
*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
*  WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
*  LAWS PRINCIPLES.  ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
*  RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
*  THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/

/*****************************************************************************
 *
 * Filename:
 * ---------
 *   usbacm_ft.c
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   This file implements usb adaption layer for factory mode API
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
 * removed!
 *
 * removed!
 * removed!
 * removed!
 *
 * removed!
 * removed!
 * removed!
 *
 * removed!
 * removed!
 * removed!
 * removed!
 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/
 
#include "intrCtrl.h"
#include "drv_comm.h"
#include "stack_common.h"
#include "stack_msgs.h"
#include "app_ltlcom.h"       /* Task message communiction */
#include "syscomp_config.h"
#include "task_config.h"
#include "stacklib.h"
#include "reg_base.h"
#include "drvsignals.h"

#include "usb_comm.h"
#include "usb_drv.h"
#include "usb_trc.h"
#include "usb.h"
#include "usbacm_drv.h"
#include "usbacm_ft.h"

#include "multiboot_config.h"
#include "fctycomp_config.h"

static void USB_Acm_FT_DMA_Callback(void);
static void USB_Acm_FT_Rx_Hdlr(void);

/* Initialize ACM functions in factory mode */
void USB_Acm_FT_Init(void)
{	
	g_UsbACM.acm_owner = USB_ACM_OWNER_FT;
	USB_Acm_FT_Register_Rx_Cb(USB_Acm_FT_Rx_Hdlr);
}

/* The maximum length that application can send one time */
kal_uint16 USB2UART_FT_Get_Max_Len(void)
{
	return 	USB2UART_METX_TX_MAX_LEN;
}

/* DMA callback function when data are all sent out to PC */
static void USB_Acm_FT_DMA_Callback(void)
{
	ilm_struct *USB_ilm;

	USB_DMA_Set_Run_Status(g_UsbACM.txpipe->byEP, KAL_FALSE);
	
	DRV_BuildPrimitive(USB_ilm,
			MOD_DRV_HISR,
			MOD_FT,
			MSG_ID_USB_FT_TX_DONE_IND,
			NULL);
	msg_send_ext_queue(USB_ilm);
}

/* Transmit data. The data is 1 byte alignment */
void USB2UART_FT_Tx_Byte(kal_uint8* addr, kal_uint16 len)
{
	if ((INT_BootMode() != MTK_FACTORY_MODE) || (gUsbDevice.device_type!=USB_CDC_ACM) 
		||(gUsbDevice.nDevState!=DEVSTATE_CONFIG))	
		EXT_ASSERT(0, gUsbDevice.device_type, gUsbDevice.nDevState, 0);
			
	if(len>USB2UART_METX_TX_MAX_LEN)
		EXT_ASSERT(0, (kal_uint32)addr, len, 0);
		
	USB_DMA_Setup(g_UsbACM.txpipe->byEP, USB_IN_EP_TYPE, (kal_uint32)addr, len, USB_Acm_FT_DMA_Callback, KAL_TRUE);	
}

/* Transmit data. The data is 4 bytes alignment, note that length is in 4 bytes unit */
void USB2UART_FT_Tx_Word(kal_uint32* addr, kal_uint16 len)
{
	if ((INT_BootMode() != MTK_FACTORY_MODE) || (gUsbDevice.device_type!=USB_CDC_ACM) 
		||(gUsbDevice.nDevState!=DEVSTATE_CONFIG))	
		EXT_ASSERT(0, gUsbDevice.device_type, gUsbDevice.nDevState, 0);
			
	if((((kal_uint32)addr)&0x3)||(len>USB2UART_METX_TX_MAX_LEN))
		EXT_ASSERT(0, (kal_uint32)addr, len, 0);
		
	/* transfer to byte length, in this function call, it will translate to word*/	
	USB_DMA_Setup(g_UsbACM.txpipe->byEP, USB_IN_EP_TYPE, (kal_uint32)addr, len<<2, USB_Acm_FT_DMA_Callback, KAL_TRUE);	
}

/* Stop transmit action */
void USB2UART_FT_Tx_Stop(void)
{
	USB_Stop_DMA_Channel(g_UsbACM.txpipe->byEP);

	/* clear FIFO, if not clear it, the next packet may be false */
	USB_Clear_IN_EP_FIFO(g_UsbACM.txpipe->byEP);
		
	/* clear dma running state here*/
	USB_DMA_Set_Run_Status(g_UsbACM.txpipe->byEP, KAL_FALSE);
}

/* Receive endpoint handler */
static void USB_Acm_FT_Rx_Hdlr(void)
{
	ilm_struct *USB_ilm;
	
	DRV_BuildPrimitive(USB_ilm,
			MOD_DRV_HISR,
			MOD_FT,			
			MSG_ID_USB_FT_RX_DATA_IND,
			NULL);
	msg_send_ext_queue(USB_ilm);
}

/* Receive data. The data is 1 byte alignment */
kal_uint16 USB2UART_FT_Rx_Byte(kal_uint8* addr, kal_uint16 len)
{
	kal_uint16 real_len;
		
	/* If the receive data length is bigger than application request,
	   factory mode application request to only receive the data length in parameter */
	if(g_UsbACM.ft_data_len > len)
		real_len = len;
	else
		real_len = g_UsbACM.ft_data_len;	
	kal_mem_cpy(addr, g_UsbACM.ft_data, real_len);
	g_UsbACM.ft_data_len = 0;

	/* make sure that buffer left more than 64 bytes so that 
	next receive it can push to buffer at a time */
	USB_Set_UnMask_Irq(KAL_TRUE);
	IRQUnmask(IRQ_USB_CODE);

	/* return the really length stored in data buffer */
	return real_len;
}