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#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 20
struct 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 0x0018
struct 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 */
} __attribute__ ((packed));
struct usb_device;
typedef enum {
USB_PORT_UNPOWERED = 0, /* Default state */
USB_PORT_POWERED, /* When we've put power to it */
USB_PORT_ENABLED, /* When it's been enabled */
USB_PORT_DISABLED, /* If it's been disabled */
USB_PORT_ADMINDISABLED, /* Forced down */
} usb_hub_port_state;
struct usb_hub_port {
usb_hub_port_state cstate; /* Configuration state */
struct usb_device *child; /* Device attached to this port */
struct usb_hub *parent; /* Parent hub */
};
struct usb_hub {
/* Device structure */
struct usb_device *dev;
/* Interrupt polling pipe */
struct urb *urb;
char buffer[(USB_MAXCHILDREN + 1 + 7) / 8]; /* add 1 bit for hub status change */
/* and add 7 bits to round up to byte boundary */
/* List of hubs */
struct list_head hub_list;
/* Temporary event list */
struct list_head event_list;
/* Number of ports on the hub */
int nports;
struct usb_hub_port ports[0]; /* Dynamically allocated */
};
#endif
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