STRUCT USB_CTRLREQUE(9) Kernel Mode Gadget API STRUCT USB_CTRLREQUE(9)NAME
struct_usb_ctrlrequest - SETUP data for a USB device control request
SYNOPSIS
struct usb_ctrlrequest {
__u8 bRequestType;
__u8 bRequest;
__le16 wValue;
__le16 wIndex;
__le16 wLength;
};
MEMBERS
bRequestType
matches the USB bmRequestType field
bRequest
matches the USB bRequest field
wValue
matches the USB wValue field (le16 byte order)
wIndex
matches the USB wIndex field (le16 byte order)
wLength
matches the USB wLength field (le16 byte order)
DESCRIPTION
This structure is used to send control requests to a USB device. It matches the different fields of the USB 2.0 Spec section 9.3, table
9-2. See the USB spec for a fuller description of the different fields, and what they are used for.
Note that the driver for any interface can issue control requests. For most devices, interfaces don't coordinate with each other, so such
requests may be made at any time.
AUTHOR
David Brownell <dbrownell@users.sourceforge.net>
Author.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 STRUCT USB_CTRLREQUE(9)
Check Out this Related Man Page
EHCI(4) BSD Kernel Interfaces Manual EHCI(4)NAME
ehci -- USB Enhanced Host Controller driver
SYNOPSIS
device ehci
DESCRIPTION
The ehci driver provides support for the USB Enhanced Host Controller Interface, which is used by USB 2.0 controllers.
EHCI controllers are peculiar in that they can only handle the USB 2.0 protocol. This means that they normally have one or more companion
controllers (i.e., ohci(4) or uhci(4)) handling USB 1.x devices. Consequently each USB connector is electrically connected to two USB con-
trollers. The handling of this is totally automatic, but can be noticed since USB 1.x and USB 2.0 devices plugged in to the same connector
appear to connect to different USB busses.
SEE ALSO ohci(4), uhci(4), usb(4)HISTORY
The ehci device driver first appeared in FreeBSD 5.1.
BUGS
The driver is not finished and is quite buggy.
There is currently no support for isochronous transfers.
BSD March 20, 2005 BSD
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