dev_ep.h

usb host在ARM7上的实现

#ifndef _DEV_EP_H
#define _DEV_EP_H

/****************************************************************************/
/*	includes																*/
/****************************************************************************/
#include	"..\_hc_core\chap9.h"

/****************************************************************************/
/*	constants																*/
/****************************************************************************/
#define		venderID( x )					(((x)->dev_descriptor).idVendor)

#define		DEFAULT_BUFFER_SIZE				8
#define		MAX_DEVICE_NUM					(MAX_DEV_INF_MEMRY+2)		// 定义支持最大设备数
#define		MAX_ENDPOINT_NUM				16

#define		ENDPOINT_BE_FREE				0x1f

#define ENDPOINT_SHARE				0x04// 端点共享标志

typedef	struct		epi			*endpoint_info_ptr;

typedef struct	epi
{
	unsigned 				max_packet_size:10;		// 端点最大封包
	unsigned 				dev_addr:7;			// 设备地址
	unsigned 				ep_num:5;				// 端点号
	unsigned 				toggle:1;				// DATA0，DATA1
	unsigned 				speed:1;				// 传输整速度：全速或低速
	unsigned 				direction:2;				// 端点方向
	unsigned 				tr_type:1;				// "Async or Iso" for PTD parameter
	unsigned 				transfer_type:3;			// Ctrl, Iso, Bulk, Intrr
	std_endpoint_descriptor	endpoint_descriptor;		// 端点描述符
	unsigned int			endpoint_create_id;		// 端点创建ID
	struct transfr			*tr_instance_ptr;			// 传输描述符链表指针
}endpoint_info;


typedef struct	dev
{
	unsigned char			address;						// 设备地址
	unsigned char			speed;						// 
	std_dev_descriptor		dev_descriptor;					// 设备描述符
	std_conf_descriptor		conf_descriptor;					// 配置描述符
	std_interface_descriptor	interfacef_descriptor;				// 接口描述符
	endpoint_info			*epi_ptr[ MAX_ENDPOINT_NUM ];	// 端点描述信息指针列表
	#ifdef STRING_DESCRIPTOR
	unsigned short			*string_manufacturer;				// 厂商描述符字符串指针
	unsigned short			*string_product;					// 产品描述符字符串指针
	unsigned short			*string_serialNum;				// 设备序列号字符串指针
	#endif
	void					*class_instance_ptr;				// 类实例结构指针
	unsigned char			topology_layer;				// 拓朴层，根集线器下的设备为第1层
}device_instance;
								

/****************************************************************************/
/*	function prototypes														*/
/****************************************************************************/

device_instance		*create_device( unsigned char speed, unsigned char topology_layer );
void				dispose_device( device_instance **dvi_ptr_ptr );
void				device_list_linitialize( void );
device_instance		*find_device( unsigned char address );

unsigned short		std_request( unsigned char *buff_ptr, device_instance	*dvi_ptr, unsigned short req, unsigned short wValue, unsigned short wIndex, unsigned short *wLength );

device_instance 	*find_class_interface(unsigned char InterfaceClassID, unsigned char DeviceIndex);
unsigned char		check_interface_class_ID( device_instance *dviPtr, unsigned char InterfaceClassID );
unsigned char		get_interface_class_ID( device_instance *dviPtr );
unsigned char		get_device_class_ID( device_instance *dviPtr );

unsigned char		get_interface_protocol_ID( device_instance *dviPtr );	 									// modification by hara
unsigned char		check_interface_protocol_ID( device_instance *dviPtr, unsigned char InterfaceProtocolID ); 	// modification by hara
unsigned char		check_interface_subclass_ID( device_instance *dviPtr, unsigned char InterfaceSubclassID ); 		// modification by hara
unsigned char		get_interface_subclass_ID( device_instance *dviPtr );	 										// modification by hara

device_instance *find_pid_vid( unsigned short VID,unsigned short PID );
endpoint_info  * find_endport_type(device_instance *dviPtr, unsigned char endport_type,unsigned char endport_direction,unsigned char index);
endpoint_info * find_endport_number(  device_instance *dviPtr, 
                                   	  unsigned char endport_number,
                                   	  unsigned char endport_direction);

void ini_endpoint_info(void);
void ini_device_instance(void);


endpoint_info * malloc_endpoint_info(void);

/* 新增内容 */
unsigned char ClearEndpointSTALL(device_instance *dvi_ptr, endpoint_info *epi_ptr);	// 清除端点停止状态


#define Get_bInterfaceProtocol(dvi_ptr)	dvi_ptr->interfacef_descriptor.bInterfaceProtocol
#define Get_bInterfaceSubClass(dvi_ptr)	dvi_ptr->interfacef_descriptor.bInterfaceSubClass




#endif //_DEV_EP_H