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/******************** (C) COPYRIGHT 2006 STMicroelectronics ********************
* File Name : usb_mem.c
* Author : MCD Application Team
* Date First Issued : 10/27/2003 : V1.0
* Description : Utility functions for memory transfers to/from PMA
********************************************************************************
* History:
* 09/18/2006 : V3.0
* 09/01/2006 : V2.0
* 10/27/2003 : V1.0
********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "usb_lib.h"
#include "usb_mem.h"
#include "usb_conf.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Extern variables ----------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name : UserToPMABufferCopy
* Description : Copy a buffer from user memory area to packet memory area (PMA)
* Input 1 : pbUsrBuf = pointer to user memory area
* Input 2 : wPMABufAddr = address into PMA
* Input 3 : wNBytes = no. of bytes to be copied
* Output : None
* Return : None
*******************************************************************************/
void UserToPMABufferCopy(u8 *pbUsrBuf,u16 wPMABufAddr, u16 wNBytes)
{
#ifdef STR7xx /* STR7xx family */
u32 n= (wNBytes+1)>>1; /* n=(wNBytes+1)/2 */
u32 i,temp1,temp2;
u16 *pdwVal;
pdwVal = (u16 *)(wPMABufAddr*2 + PMAAddr);
for (i = n; i!= 0; i--)
{
temp1 = (u16)*pbUsrBuf;
pbUsrBuf++;
temp2 = temp1 | (u16)*pbUsrBuf<<8;
*pdwVal++ = temp2;
pdwVal++;
pbUsrBuf++;
}
#endif /* End of STR7xx family*/
#ifdef STR91x /*STR91x family*/
u32 n= (wNBytes+3)>>2; /*n=(wNBytes+1)/4*/
u32 i,temp1,temp2,temp3,temp4;
u32 *pdwVal;
pdwVal = (u32 *)(PMAAddr+(u32)((wPMABufAddr)));
for (i=n; i!=0; i--)
{
temp1 = (u32)*pbUsrBuf;
temp2 = temp1 | (u32)*(pbUsrBuf+1)<<8;
temp3 = temp2 | (u32)*(pbUsrBuf+2)<<16;
temp4 = temp3 | (u32)*(pbUsrBuf+3)<<24;
pbUsrBuf+=4;
*pdwVal = temp4;
pdwVal++;
}
#endif /* End of STR91x family*/
}
/*******************************************************************************
* Function Name : PMAToUserBufferCopy
* Description : Copy a buffer from user memory area to packet memory area (PMA)
* Input 1 : pbUsrBuf = pointer to user memory area
* Input 2 : wPMABufAddr = address into PMA
* Input 3 : wNBytes = no. of bytes to be copied
* Output : pbUsrBuf = pointer to user memory area with correct data
* Return : None
*******************************************************************************/
void PMAToUserBufferCopy(u8 *pbUsrBuf,u16 wPMABufAddr, u16 wNBytes)
{
#ifdef STR7xx /*STR7xx family*/
u32 n= (wNBytes+1)>>1;/* /2*/
u32 i;
u32 *pdwVal;
pdwVal = (u32 *)(wPMABufAddr*2 + PMAAddr);
for (i = n; i!= 0; i--)
{
*(u16*)pbUsrBuf++ = *pdwVal++;
pbUsrBuf++;
}
#endif /* End of STR7xx family*/
#ifdef STR91x /*STR91x family*/
u8 *pbVal;
u16 wNTrasf=wNBytes;
if((wNBytes) == 0) return;
pbVal = (u8 *)(PMAAddr + wPMABufAddr);
while(1)
{
*pbUsrBuf++ = *pbVal++;
if((--wNTrasf) == 0) return;
*pbUsrBuf++ = *pbVal++;
if((--wNTrasf) == 0) return;
}
#endif /* End of STR91x family*/
}
/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/