175 lines
3.5 KiB
C
175 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2003-2008 Takahiro Hirofuchi
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* Copyright (C) 2015 Nobuo Iwata
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*/
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#ifndef __USBIP_VHCI_H
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#define __USBIP_VHCI_H
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/sysfs.h>
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#include <linux/types.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include <linux/wait.h>
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struct vhci_device {
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struct usb_device *udev;
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/*
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* devid specifies a remote usb device uniquely instead
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* of combination of busnum and devnum.
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*/
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__u32 devid;
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/* speed of a remote device */
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enum usb_device_speed speed;
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/* vhci root-hub port to which this device is attached */
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__u32 rhport;
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struct usbip_device ud;
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/* lock for the below link lists */
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spinlock_t priv_lock;
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/* vhci_priv is linked to one of them. */
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struct list_head priv_tx;
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struct list_head priv_rx;
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/* vhci_unlink is linked to one of them */
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struct list_head unlink_tx;
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struct list_head unlink_rx;
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/* vhci_tx thread sleeps for this queue */
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wait_queue_head_t waitq_tx;
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};
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/* urb->hcpriv, use container_of() */
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struct vhci_priv {
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unsigned long seqnum;
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struct list_head list;
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struct vhci_device *vdev;
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struct urb *urb;
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};
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struct vhci_unlink {
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/* seqnum of this request */
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unsigned long seqnum;
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struct list_head list;
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/* seqnum of the unlink target */
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unsigned long unlink_seqnum;
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};
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enum hub_speed {
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HUB_SPEED_HIGH = 0,
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HUB_SPEED_SUPER,
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};
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/* Number of supported ports. Value has an upperbound of USB_MAXCHILDREN */
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#ifdef CONFIG_USBIP_VHCI_HC_PORTS
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#define VHCI_HC_PORTS CONFIG_USBIP_VHCI_HC_PORTS
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#else
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#define VHCI_HC_PORTS 8
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#endif
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/* Each VHCI has 2 hubs (USB2 and USB3), each has VHCI_HC_PORTS ports */
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#define VHCI_PORTS (VHCI_HC_PORTS*2)
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#ifdef CONFIG_USBIP_VHCI_NR_HCS
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#define VHCI_NR_HCS CONFIG_USBIP_VHCI_NR_HCS
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#else
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#define VHCI_NR_HCS 1
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#endif
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#define MAX_STATUS_NAME 16
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struct vhci {
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spinlock_t lock;
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struct platform_device *pdev;
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struct vhci_hcd *vhci_hcd_hs;
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struct vhci_hcd *vhci_hcd_ss;
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};
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/* for usb_hcd.hcd_priv[0] */
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struct vhci_hcd {
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struct vhci *vhci;
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u32 port_status[VHCI_HC_PORTS];
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unsigned resuming:1;
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unsigned long re_timeout;
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atomic_t seqnum;
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/*
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* NOTE:
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* wIndex shows the port number and begins from 1.
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* But, the index of this array begins from 0.
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*/
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struct vhci_device vdev[VHCI_HC_PORTS];
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};
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extern int vhci_num_controllers;
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extern struct vhci *vhcis;
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extern struct attribute_group vhci_attr_group;
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/* vhci_hcd.c */
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void rh_port_connect(struct vhci_device *vdev, enum usb_device_speed speed);
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/* vhci_sysfs.c */
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int vhci_init_attr_group(void);
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void vhci_finish_attr_group(void);
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/* vhci_rx.c */
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struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum);
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int vhci_rx_loop(void *data);
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/* vhci_tx.c */
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int vhci_tx_loop(void *data);
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static inline __u32 port_to_rhport(__u32 port)
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{
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return port % VHCI_HC_PORTS;
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}
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static inline int port_to_pdev_nr(__u32 port)
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{
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return port / VHCI_PORTS;
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}
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static inline struct vhci_hcd *hcd_to_vhci_hcd(struct usb_hcd *hcd)
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{
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return (struct vhci_hcd *) (hcd->hcd_priv);
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}
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static inline struct device *hcd_dev(struct usb_hcd *hcd)
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{
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return (hcd)->self.controller;
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}
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static inline const char *hcd_name(struct usb_hcd *hcd)
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{
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return (hcd)->self.bus_name;
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}
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static inline struct usb_hcd *vhci_hcd_to_hcd(struct vhci_hcd *vhci_hcd)
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{
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return container_of((void *) vhci_hcd, struct usb_hcd, hcd_priv);
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}
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static inline struct vhci_hcd *vdev_to_vhci_hcd(struct vhci_device *vdev)
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{
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return container_of((void *)(vdev - vdev->rhport), struct vhci_hcd, vdev);
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}
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#endif /* __USBIP_VHCI_H */
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