/* * Copyright (C) 2003-2008 Takahiro Hirofuchi * * This is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * */ #ifndef __USBIP_VHCI_H #define __USBIP_VHCI_H #include <linux/device.h> #include <linux/list.h> #include <linux/spinlock.h> #include <linux/sysfs.h> #include <linux/types.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/wait.h> struct vhci_device { struct usb_device *udev; /* * devid specifies a remote usb device uniquely instead * of combination of busnum and devnum. */ __u32 devid; /* speed of a remote device */ enum usb_device_speed speed; /* vhci root-hub port to which this device is attached */ __u32 rhport; struct usbip_device ud; /* lock for the below link lists */ spinlock_t priv_lock; /* vhci_priv is linked to one of them. */ struct list_head priv_tx; struct list_head priv_rx; /* vhci_unlink is linked to one of them */ struct list_head unlink_tx; struct list_head unlink_rx; /* vhci_tx thread sleeps for this queue */ wait_queue_head_t waitq_tx; }; /* urb->hcpriv, use container_of() */ struct vhci_priv { unsigned long seqnum; struct list_head list; struct vhci_device *vdev; struct urb *urb; }; struct vhci_unlink { /* seqnum of this request */ unsigned long seqnum; struct list_head list; /* seqnum of the unlink target */ unsigned long unlink_seqnum; }; /* * The number of ports is less than 16 ? * USB_MAXCHILDREN is statically defined to 16 in usb.h. Its maximum value * would be 31 because the event_bits[1] of struct usb_hub is defined as * unsigned long in hub.h */ #define VHCI_NPORTS 8 /* for usb_bus.hcpriv */ struct vhci_hcd { spinlock_t lock; u32 port_status[VHCI_NPORTS]; unsigned resuming:1; unsigned long re_timeout; atomic_t seqnum; /* * NOTE: * wIndex shows the port number and begins from 1. * But, the index of this array begins from 0. */ struct vhci_device vdev[VHCI_NPORTS]; }; extern struct vhci_hcd *the_controller; extern const struct attribute_group dev_attr_group; #define hardware (&the_controller->pdev.dev) /* vhci_hcd.c */ void rh_port_connect(int rhport, enum usb_device_speed speed); void rh_port_disconnect(int rhport); /* vhci_rx.c */ struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum); int vhci_rx_loop(void *data); /* vhci_tx.c */ int vhci_tx_loop(void *data); static inline struct vhci_device *port_to_vdev(__u32 port) { return &the_controller->vdev[port]; } static inline struct vhci_hcd *hcd_to_vhci(struct usb_hcd *hcd) { return (struct vhci_hcd *) (hcd->hcd_priv); } static inline struct usb_hcd *vhci_to_hcd(struct vhci_hcd *vhci) { return container_of((void *) vhci, struct usb_hcd, hcd_priv); } static inline struct device *vhci_dev(struct vhci_hcd *vhci) { return vhci_to_hcd(vhci)->self.controller; } #endif /* __USBIP_VHCI_H */