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authorOlof Johansson <olof@lixom.net>2014-09-24 11:20:48 -0700
committerOlof Johansson <olof@lixom.net>2014-09-24 11:21:01 -0700
commit28fd837204236cf5b5533525e5b53c5176fa97a3 (patch)
treeac7dcad925950bc0bb53c5a55cb199e31e7aaee0 /drivers/usb/usbip/vhci.h
parentc82eb464879dd0ecbe0c4cb1b80ac4e82b634872 (diff)
parent64d14a31d5410ea34641c41795e0ba222bda740c (diff)
Merge tag 'imx-cleanup-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/cleanup
Merge "ARM: imx: cleanup for 3.18" from Shawn Guo: The i.MX cleanup for 3.18: - Reomve a few i.MX27 and i.MX1 board files - Remove imx_scu_standby_enable() since core code handles scu standby now - Remove unnecessary iomux declaration - Remove useless sound card property from vf610-twr dts * tag 'imx-cleanup-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: ARM: imx: Remove mach-mxt_td60 board file ARM: i.MX: Remove i.MX1 ADS board support ARM: dts: vf610-twr: remove useless property for sound card. ARM: imx: remove imx_scu_standby_enable() ARM: i.MX: Remove Phytec i.MX27 PCM038/PCM970 board files ARM: i.MX: Remove mach-cpuimx27sd board file ARM: imx: iomux: Do not export symbol without public declaration Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/usb/usbip/vhci.h')
-rw-r--r--drivers/usb/usbip/vhci.h129
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/usb/usbip/vhci.h b/drivers/usb/usbip/vhci.h
new file mode 100644
index 00000000000..a863a98a91c
--- /dev/null
+++ b/drivers/usb/usbip/vhci.h
@@ -0,0 +1,129 @@
+/*
+ * 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;
+};
+
+/* Number of supported ports. Value has an upperbound of USB_MAXCHILDREN */
+#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;
+
+/* vhci_hcd.c */
+void rh_port_connect(int rhport, enum usb_device_speed speed);
+
+/* 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 */