usbacm_dsp.c

MTK平台绝密核心代码之 USB驱动

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/*****************************************************************************
 *
 * Filename:
 * ---------
 *    usbacm_dsp.c
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   This file implements usb adaption layer for DSP API
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------ 
 * removed!
 * removed!
 * removed!
 *
 * removed!
 * removed!
 * removed!
 *
 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/
#include "kal_release.h"
#include "drv_comm.h"

#include "usb_drv.h"
#include "irdbg_drv.h"
#include "usb_comm.h"
#include "usb.h"
#include "usb_resource.h"
#include "usbacm_drv.h"
#include "usbacm_dsp.h"

#ifdef __DSPIRDBG__

/* Exception flag*/
extern kal_uint8 INT_Exception_Enter; 

static USB_DSPIRDBG_Struct g_USB_DSPLog;
static void USB_DSPIRDBG_DMA_Callback(void);
static void USB_DSPIRDBG_Hdlr(void);

/* DMA callback function for TX sent out data */
static void USB_DSPIRDBG_DMA_Callback(void)
{
	kal_uint32 savedMask;
	kal_uint8* buff_addr;
	kal_bool bDMA = KAL_FALSE;	

	USB_DMA_Set_Run_Status(g_UsbACM.txpipe->byEP, KAL_FALSE);

	if( (g_USB_DSPLog.dma_owner!=USB_DSPIRDBG_DMA_OWNER_DMA) 
		&& (g_USB_DSPLog.dma_owner!=USB_DSPIRDBG_DMA_OWNER_DSP))
	{
		EXT_ASSERT(0, g_USB_DSPLog.dma_owner, g_USB_DSPLog.dma_write_index, g_USB_DSPLog.dma_read_index);   
	}
	
	IRDBG_Clear_Buff(g_USB_DSPLog.dma_read_index);
	g_USB_DSPLog.dma_read_index = (g_USB_DSPLog.dma_read_index+1)%g_USB_DSPLog.buff_num;
	g_USB_DSPLog.dma_owner = USB_DSPIRDBG_DMA_OWNER_NONE;

	savedMask = SaveAndSetIRQMask();
	/* in case usb is plug out just before this critical section*/
	if(gUsbDevice.device_type == USB_CDC_ACM)
	{
		if((g_USB_DSPLog.dma_owner==USB_DSPIRDBG_DMA_OWNER_NONE) && 
			 (IRDBG_Check_Buff_Full(g_USB_DSPLog.dma_read_index)==KAL_TRUE))
			//(g_USB_DSPLog.dma_write_index!=g_USB_DSPLog.dma_read_index))	
		{
			g_USB_DSPLog.dma_owner = USB_DSPIRDBG_DMA_OWNER_DMA;
			bDMA = KAL_TRUE;		
		}
	}
	RestoreIRQMask(savedMask);

	if(bDMA==KAL_TRUE)
	{
		if(g_USB_DSPLog.dma_owner!= USB_DSPIRDBG_DMA_OWNER_DMA)
		{
			EXT_ASSERT(0, g_USB_DSPLog.dma_owner, g_USB_DSPLog.dma_write_index, g_USB_DSPLog.dma_read_index);
		}

		buff_addr = IRDBG_Get_Buff_Addr(g_USB_DSPLog.dma_read_index);
		USB_DMA_Setup(g_UsbACM.txpipe->byEP, USB_IN_EP_TYPE, (kal_uint32)buff_addr, g_USB_DSPLog.buff_size, USB_DSPIRDBG_DMA_Callback, KAL_TRUE);	
	}
}


static void USB_DSPIRDBG_Hdlr(void)
{
	kal_uint32  savedMask;
	kal_uint8* buff_addr;
	kal_bool bDMA = KAL_FALSE;

	if(IRDBG_Check_Buff_Full(g_USB_DSPLog.dma_write_index) == KAL_FALSE)
	{
		EXT_ASSERT(0, g_USB_DSPLog.dma_write_index, g_USB_DSPLog.dma_read_index, g_USB_DSPLog.dma_owner);
	}

	g_USB_DSPLog.dma_write_index = (g_USB_DSPLog.dma_write_index+1)%g_USB_DSPLog.buff_num;
//	if(g_USB_DSPLog.dma_write_index==g_USB_DSPLog.dma_read_index)
//	{
//		EXT_ASSERT(0, g_USB_DSPLog.dma_write_index, g_USB_DSPLog.dma_read_index, 0);
//	}
	
	savedMask = SaveAndSetIRQMask();
	/* in case usb is plug out just before this critical section*/
	if(gUsbDevice.device_type == USB_CDC_ACM)
	{
		if(g_USB_DSPLog.dma_owner==USB_DSPIRDBG_DMA_OWNER_NONE)	
		{
			g_USB_DSPLog.dma_owner = USB_DSPIRDBG_DMA_OWNER_DSP;
			bDMA = KAL_TRUE;		
		}
	}
	RestoreIRQMask(savedMask);
	
	if(bDMA==KAL_TRUE)
	{	
		if(g_USB_DSPLog.dma_owner!= USB_DSPIRDBG_DMA_OWNER_DSP)
		{
			EXT_ASSERT(0, g_USB_DSPLog.dma_owner, g_USB_DSPLog.dma_write_index, g_USB_DSPLog.dma_read_index);
		}

		buff_addr = IRDBG_Get_Buff_Addr(g_USB_DSPLog.dma_read_index);
		USB_DMA_Setup(g_UsbACM.txpipe->byEP, USB_IN_EP_TYPE, (kal_uint32)buff_addr, g_USB_DSPLog.buff_size, USB_DSPIRDBG_DMA_Callback, KAL_TRUE);	
	}	
}

void USB_DSPIRDBG_Init(void)
{	
	if(g_USB_DSPLog.b_not_first_time==KAL_FALSE)
	{	
		g_USB_DSPLog.b_not_first_time = KAL_TRUE;
		g_USB_DSPLog.buff_num = IRDBG_Get_Buff_Num();
		g_USB_DSPLog.buff_size = IRDBG_Get_Buff_Size();
		g_USB_DSPLog.dma_owner = USB_DSPIRDBG_DMA_OWNER_NONE;
		g_USB_DSPLog.dma_read_index = 0;
		g_USB_DSPLog.dma_write_index = 0;

		IRDBG_Init(USB_DSPIRDBG_Hdlr);
	}
	else
	{
		/* Do not reset read and write index because DSP has already sent data to buffer */
		g_USB_DSPLog.dma_owner = USB_DSPIRDBG_DMA_OWNER_NONE;	
	}	
}

void USB_DSPIRDBG_Start(void)
{
	kal_uint8* buff_addr;
	/* send the previous time data before plug out cable */
	//if(g_USB_DSPLog.dma_write_index!=g_USB_DSPLog.dma_read_index)
	if(IRDBG_Check_Buff_Full(g_USB_DSPLog.dma_read_index)==KAL_TRUE)
	{	
		g_USB_DSPLog.dma_owner = USB_DSPIRDBG_DMA_OWNER_DMA;
		buff_addr = IRDBG_Get_Buff_Addr(g_USB_DSPLog.dma_read_index);
		USB_DMA_Setup(g_UsbACM.txpipe->byEP, USB_IN_EP_TYPE, (kal_uint32)buff_addr, g_USB_DSPLog.buff_size, USB_DSPIRDBG_DMA_Callback, KAL_TRUE);	
	}
	
	IRDBG_Start();
}

void USB_DSPIRDBG_Stop(void)
{
	IRDBG_Stop();
}

// for test
static kal_bool b_test_pattern = KAL_TRUE;

void USB_DSPIRDBG_Flush_Data(void)
{
	kal_uint8 index;
	kal_uint8 *buff_addr;
	static kal_uint8 dummy_data = 0xff;	
		
	if(INT_Exception_Enter==0)
		EXT_ASSERT(0, INT_Exception_Enter, 0, 0);

	if ( (gUsbDevice.device_type != USB_CDC_ACM) || (g_UsbACM.acm_owner != USB_ACM_OWNER_DSP))
	{
		/* This function should only be called when assertion, if not CDC_ACM type, return it directly*/
		return;
	}
		
	/* wait for the running DMA done */
	USB_Polling_Transmit_Done(g_UsbACM.txpipe->byEP);

	for(index = 0; index < g_USB_DSPLog.buff_num; index++)
	{
		buff_addr = IRDBG_Get_Buff_Addr(((g_USB_DSPLog.dma_read_index+index)%g_USB_DSPLog.buff_num));
		
		if(b_test_pattern==KAL_TRUE)
		{
			// add only for test
			buff_addr[0] = 0x77;
			buff_addr[1] = 0x88;
			buff_addr[2] = index;
		}	
		
		USB_Polling_Transmit_Data(g_UsbACM.txpipe->byEP, USB_IN_EP_TYPE, (kal_uint32)buff_addr, g_USB_DSPLog.buff_size, NULL, KAL_FALSE);	
	}	

	// send one byte dummy data 
	USB_Polling_Transmit_Data(g_UsbACM.txpipe->byEP, USB_IN_EP_TYPE, (kal_uint32)&dummy_data, 1, NULL, KAL_FALSE);	
}



#endif /*__DSPIRDBG__ */