xusbps_sinit.c

自学ZedBoard：使用IP通过ARM PS访问FPGA（源代码）

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/**
 *
 * @file xusbps_sinit.c
 *
 * The implementation of the XUsbPs driver's static initialzation
 * functionality.
 *
 * <pre>
 * MODIFICATION HISTORY:
 *
 * Ver   Who  Date     Changes
 * ----- ---- -------- -----------------------------------------------
 * 1.00a wgr  10/10/10 First release
 * </pre>
 *
 *****************************************************************************/

/***************************** Include Files ********************************/

#include "xstatus.h"
#include "xusbps.h"
#include "xparameters.h"

/************************** Constant Definitions ****************************/

/**************************** Type Definitions ******************************/

/***************** Macros (Inline Functions) Definitions ********************/

/************************** Variable Definitions ****************************/

extern XUsbPs_Config XUsbPs_ConfigTable[];

/************************** Function Prototypes *****************************/

/****************************************************************************/
/**
*
* Looks up the controller configuration based on the unique controller ID. A
* table contains the configuration info for each controller in the system.
*
* @param	DeviceID is the ID of the controller to look up the
*		configuration for.
*
* @return
*		A pointer to the configuration found or NULL if the specified
*		controller ID was not found.
*
******************************************************************************/
XUsbPs_Config *XUsbPs_LookupConfig(u16 DeviceID)
{
	XUsbPs_Config *CfgPtr = NULL;

	int Index;

	for (Index = 0; Index < XPAR_XUSBPS_NUM_INSTANCES; Index++) {
		if (XUsbPs_ConfigTable[Index].DeviceID == DeviceID) {
			CfgPtr = &XUsbPs_ConfigTable[Index];
			break;
		}
	}

	return CfgPtr;
}