usb_data_structures.h

Freescale ColdFire MCF537x 家族的参考代码

/*
 * File:		usb_data_structures.h
 * Purpose:		USB data structure definitions
 *
 * Notes:
 */

#ifndef _USB_DATA_STRUCTURES_H
#define _USB_DATA_STRUCTURES_H

#include "common.h"
/********************************************************************/

/* usb data structure definitions */

/* USB host queue head structure */
typedef struct {
	uint32 qh_link_ptr;
	uint32 ep_char;
	uint32 ep_cap;
	uint32 curr_qtd;
	uint32 next_qtd;
	uint32 alt_qtd;
	uint32 qtd_token;
	uint32 qtd_buf0;
	uint32 qtd_buf1;
	uint32 qtd_buf2;
	uint32 qtd_buf3;
	uint32 qtd_buf4;
	uint32 malloc_ptr;	/* Used to keep track of the unaligned 
						   memory allocated for the data structure */
} USB_QH;

/* USB host queue element transfer descriptor */
typedef struct {
	uint32 next_qtd;
	uint32 alt_qtd;
	uint32 qtd_token;
	uint32 qtd_buf0;
	uint32 qtd_buf1;
	uint32 qtd_buf2;
	uint32 qtd_buf3;
	uint32 qtd_buf4;
	uint32 malloc_ptr;	/* Used to keep track of the unaligned 
						   memory allocated for the data structure */

} USB_QTD;


/* USB device endpoint queue head structure */
typedef struct {
	uint32 ep_char;
	uint32 curr_dtd;
	uint32 next_dtd;
	uint32 dtd_token;
	uint32 dtd_buf0;
	uint32 dtd_buf1;
	uint32 dtd_buf2;
	uint32 dtd_buf3;
	uint32 dtd_buf4;
	uint32 setup_buf0;
	uint32 setup_buf1;
	/* The endpoint queue heads are static within the endpoint list.
	 * The endpoint list is malloc'd, which makes space for the
	 * endpoint queue heads. So there is no malloc_ptr field for this
	 * data structure.
	 */
} USB_EP_QH;

/* USB device endpoint transfer descriptor */
typedef struct {
	uint32 next_dtd;
	uint32 dtd_token;
	uint32 dtd_buf0;
	uint32 dtd_buf1;
	uint32 dtd_buf2;
	uint32 dtd_buf3;
	uint32 dtd_buf4;
	uint32 malloc_ptr;	/* Used to keep track of the unaligned 
						   memory allocated for the data structure */
} USB_DTD;

/* Macros for accessing individual endpoint queue heads within the
 * endpoint list. These macros give the offset index from the endpoint
 * list start address.
 */
 
 	#define EP_QH_OUT(x)	(0x80 * x)
 	#define EP_QH_IN(x)		((0x80 * x) + 0x40)
		
	#define	EP_QH0_OUT		0x0 
	#define EP_QH0_IN		0x40
	#define EP_QH1_OUT		0x80
	#define EP_QH1_IN		0xC0
	#define EP_QH2_OUT		0x100
	#define EP_QH2_IN		0x140
	#define EP_QH3_OUT		0x180
	#define EP_QH3_IN		0x1C0
	#define EP_QH4_OUT		0x200
	#define EP_QH4_IN		0x240
	#define EP_QH5_OUT		0x280
	#define EP_QH5_IN		0x2C0
	
#endif	/* _USB_DATA_STRUCTURES_H */