mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1c9de5bf42
This patch adds a USB3 HCD to an existing USB2 HCD and provides
the support of SuperSpeed, in case the device can only be enumerated
with SuperSpeed.
The bulk of the added code in usb3_bos_desc and hub_control to support
SuperSpeed is borrowed from the commit 1cd8fd2887 ("usb: gadget:
dummy_hcd: add SuperSpeed support").
With this patch, each vhci will have VHCI_HC_PORTS HighSpeed ports
and VHCI_HC_PORTS SuperSpeed ports.
Suggested-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Yuyang Du <yuyang.du@intel.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
177 lines
3.6 KiB
C
177 lines
3.6 KiB
C
/*
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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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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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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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#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_HC_PORTS * 2);
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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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