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174 lines
3.5 KiB
174 lines
3.5 KiB
// 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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