46 struct usb_bus {  struct
48 	struct root_hold_token *bus_roothold;
79 	struct usb_bus_msg explore_msg[2];  argument
80 	struct usb_bus_msg detach_msg[2];  argument
81 	struct usb_bus_msg attach_msg[2];  argument
82 	struct usb_bus_msg suspend_msg[2];  argument
83 	struct usb_bus_msg resume_msg[2];  argument
84 	struct usb_bus_msg reset_msg[2];  argument
85 	struct usb_bus_msg shutdown_msg[2];  argument
101 	const struct usb_bus_methods *methods;	/* filled by HC driver */  argument
102 	struct usb_device **devices;
104 	struct ifnet *ifp;	/* only for USB Packet Filter */
106 	usb_power_mask_t hw_power_state;	/* see USB_HW_POWER_XXX */
107 	usb_size_t uframe_usage[USB_HS_MICRO_FRAMES_MAX];
109 	uint16_t isoc_time_last;	/* in milliseconds */
111 	uint8_t	alloc_failed;		/* Set if memory allocation failed. */
112 	uint8_t	driver_added_refcount;	/* Current driver generation count */
113 	enum usb_revision usbrev;	/* USB revision. See "USB_REV_XXX". */
115 	uint8_t	devices_max;		/* maximum number of USB devices */
116 	uint8_t	do_probe;		/* set if USB should be re-probed */
117 	uint8_t no_explore;		/* don't explore USB ports */
118 	uint8_t dma_bits;		/* number of DMA address lines */
119 	uint8_t control_ep_quirk;	/* need 64kByte buffer for data stage */