#ifndef __LINUX_HUB_H#define __LINUX_HUB_H#include <linux/list.h>/* * Hub request types */#define USB_RT_HUB	(USB_TYPE_CLASS | USB_RECIP_DEVICE)#define USB_RT_PORT	(USB_TYPE_CLASS | USB_RECIP_OTHER)/* * Hub Class feature numbers */#define C_HUB_LOCAL_POWER	0#define C_HUB_OVER_CURRENT	1/* * Port feature numbers */#define USB_PORT_FEAT_CONNECTION	0#define USB_PORT_FEAT_ENABLE		1#define USB_PORT_FEAT_SUSPEND		2#define USB_PORT_FEAT_OVER_CURRENT	3#define USB_PORT_FEAT_RESET		4#define USB_PORT_FEAT_POWER		8#define USB_PORT_FEAT_LOWSPEED		9#define USB_PORT_FEAT_C_CONNECTION	16#define USB_PORT_FEAT_C_ENABLE		17#define USB_PORT_FEAT_C_SUSPEND		18#define USB_PORT_FEAT_C_OVER_CURRENT	19#define USB_PORT_FEAT_C_RESET		20struct usb_port_status {	__u16 wPortStatus;	__u16 wPortChange;	} __attribute__ ((packed));/* wPortStatus bits */#define USB_PORT_STAT_CONNECTION	0x0001#define USB_PORT_STAT_ENABLE		0x0002#define USB_PORT_STAT_SUSPEND		0x0004#define USB_PORT_STAT_OVERCURRENT	0x0008#define USB_PORT_STAT_RESET		0x0010#define USB_PORT_STAT_POWER		0x0100#define USB_PORT_STAT_LOW_SPEED		0x0200/* wPortChange bits */#define USB_PORT_STAT_C_CONNECTION	0x0001#define USB_PORT_STAT_C_ENABLE		0x0002#define USB_PORT_STAT_C_SUSPEND		0x0004#define USB_PORT_STAT_C_OVERCURRENT	0x0008#define USB_PORT_STAT_C_RESET		0x0010/* wHubCharacteristics (masks) */#define HUB_CHAR_LPSM		0x0003#define HUB_CHAR_COMPOUND	0x0004#define HUB_CHAR_OCPM		0x0018struct usb_hub_status {	__u16 wHubStatus;	__u16 wHubChange;} __attribute__ ((packed));/* *Hub Status & Hub Change bit masks */#define HUB_STATUS_LOCAL_POWER	0x0001#define HUB_STATUS_OVERCURRENT	0x0002#define HUB_CHANGE_LOCAL_POWER	0x0001#define HUB_CHANGE_OVERCURRENT	0x0002#define HUB_DESCRIPTOR_MAX_SIZE	39	/* enough for 127 ports on a hub *//* Hub descriptor */struct usb_hub_descriptor {	__u8  bLength;	__u8  bDescriptorType;	__u8  bNbrPorts;	__u16 wHubCharacteristics;	__u8  bPwrOn2PwrGood;	__u8  bHubContrCurrent;	/* DeviceRemovable and PortPwrCtrlMask want to be variable-length 	   bitmaps that hold max 256 entries, but for now they're ignored */	__u8  bitmap[0];} __attribute__ ((packed));struct usb_device;struct usb_hub {	struct usb_device *dev;	struct urb *urb;		/* Interrupt polling pipe */	char buffer[(USB_MAXCHILDREN + 1 + 7) / 8]; /* add 1 bit for hub status change */					/* and add 7 bits to round up to byte boundary */	int error;	int nerrors;	struct list_head hub_list;	struct list_head event_list;	/* Number of ports on the hub */	int nports;	struct usb_hub_descriptor *descriptor;	atomic_t refcnt;};#endif