7f2b019c8d
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Valentina Manea <valentina.manea.m@gmail.com> Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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