talexander
/
freebsd_amp_hwpstate
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added man page usb uhci ohci

This commit is contained in:
Nick Hibma 1999-02-21 16:56:33 +00:00
parent 88cac66373
commit b2c1f437de
7 changed files with 875 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
share/man/man4/man4.i386/Makefile
View File

@ -1,13 +1,14 @@
# $Id: Makefile,v 1.98 1999/02/13 17:48:41 nsouch Exp $
# $Id: Makefile,v 1.99 1999/02/14 16:22:27 nsouch Exp $
MAN4= adv.4 adw.4 aha.4 ahb.4 ahc.4 aic.4 alpm.4 apm.4 ar.4 asc.4 atkbd.4 \
atkbdc.4 ax.4 bktr.4 bt.4 cs.4 cx.4 cy.4 de.4 \
dgb.4 dpt.4 ed.4 el.4 en.4 ep.4 ex.4 fdc.4 fe.4 fxp.4 gsc.4 ie.4 \
io.4 joy.4 keyboard.4 labpc.4 le.4 lnc.4 matcd.4 mcd.4 \
mem.4 meteor.4 mouse.4 mse.4 mtio.4 mx.4 ncr.4 npx.4 \
pcf.4 pcm.4 pcvt.4 perfmon.4 pn.4 pnp.4 ppc.4 psm.4 \
ohci.4 pcf.4 pcm.4 pcvt.4 perfmon.4 pn.4 pnp.4 ppc.4 psm.4 \
rdp.4 rl.4 sb.4 scd.4 screen.4 si.4 sio.4 \
spkr.4 splash.4 sr.4 sysmouse.4 tl.4 tw.4 tx.4 vga.4 vr.4 vx.4 \
spkr.4 splash.4 sr.4 sysmouse.4 tl.4 tw.4 tx.4 uhci.4 usb.4 \
vga.4 vr.4 vx.4 \
wb.4 wd.4 wfd.4 wl.4 wt.4 xl.4 ze.4 zp.4
MLINKS= adv.4 ../adv.4
@ -56,6 +57,7 @@ MLINKS+= mtio.4 ../mtio.4
MLINKS+= mx.4 ../mx.4
MLINKS+= ncr.4 ../ncr.4
MLINKS+= npx.4 ../npx.4
MLINKS+= ohci.4 ../ohci.4
MLINKS+= pcf.4 ../pcf.4
MLINKS+= pcm.4 ../pcm.4
MLINKS+= pcvt.4 vt.4 pcvt.4 ../pcvt.4 pcvt.4 ../vt.4
@ -78,6 +80,8 @@ MLINKS+= sysmouse.4 ../sysmouse.4
MLINKS+= tl.4 ../tl.4
MLINKS+= tw.4 ../tw.4
MLINKS+= tx.4 ../tx.4
MLINKS+= uhci.4 ../uhci.4
MLINKS+= usb.4 ../usb.4
MLINKS+= vga.4 ../vga.4
MLINKS+= vr.4 ../vr.4
MLINKS+= vx.4 ../vx.4

69
share/man/man4/man4.i386/ohci.4 Normal file
View File

@ -0,0 +1,69 @@
.\" Copyright (c) 1999
.\" Nick Hibma <hibma@skylink.it>. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Bill Paul.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL NICK HIBMA OR THE VOICES IN HIS HEAD
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
.\" THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $Id: xl.4,v 1.3 1998/12/05 09:36:15 rnordier Exp $
.\"
.Dd February 21, 1999
.Dt 0HCI 4 i386
.Os FreeBSD
.Sh NAME
.Nm ohci
.Nd
OHCI USB Host Controller Driver
.Sh SYNOPSIS
.Cd "controller ohci0"
.Sh DESCRIPTION
The
.Nm
driver provides support for OHCI-type PCI based USB controllers. This
includes
.Bl -tag -width xxxxx
.It AcerLabs M5237 (Aladdin-V)
.It OPTi 82C861 (FireLink)
.It NEC uPD 9210
.It CMD Tech 670 (USB0670)
.It CMD Tech 673 (USB0673)
.El
or any other OHCI v1.0 compliant controller.
.Sh SEE ALSO
.Xr uhci 4
.Sh HISTORY
The
.Nm
device driver first appeared in
.Fx 3.0 .
.Sh AUTHOR
The
.Nm
driver was written by
.An Lennart Augustsson (augustss@carlstedt.se) for the
.Nx
project.

68
share/man/man4/man4.i386/uhci.4 Normal file
View File

@ -0,0 +1,68 @@
.\" Copyright (c) 1999
.\" Nick Hibma <hibma@skylink.it>. All rights reserved.
.\"
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Bill Paul.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL NICK HIBMA OR THE VOICES IN HIS HEAD
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
.\" THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd February 21, 1999
.Dt UHCI 4 i386
.Os FreeBSD
.Sh NAME
.Nm uhci
.Nd
UHCI USB Host Controller Driver
.Sh SYNOPSIS
.Cd "controller uhci0"
.Sh DESCRIPTION
The
.Nm
driver provides support for UHCI-type PCI based USB controllers. This
includes
.Bl -tag -width xxxxx
.It Intel 82371AB/EB (PIIX4)
.It Intel 82371SB (PIIX3)
.It VIA 83C572
.El
or any other UHCI v1.1 compliant controller.
.Sh SEE ALSO
.Xr ohci 4
.Sh HISTORY
The
.Nm
device driver first appeared in
.Fx 3.0 .
.Sh AUTHOR
The
.Nm
driver was written by
.An Lennart Augustsson (augustss@carlstedt.se) for the
.Nx
project.

297
share/man/man4/man4.i386/usb.4 Normal file
View File

@ -0,0 +1,297 @@
.\" Copyright (c) 1997, 1998
.\" Nick Hibma <hibma@skylink.it>. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Bill Paul.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL NICK HIBMA OR THE VOICES IN HIS HEAD
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
.\" THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $Id: xl.4,v 1.3 1998/12/05 09:36:15 rnordier Exp $
.\"
.Dd February 21, 1999
.Dt USB 4 i386
.Os FreeBSD
.Sh NAME
.Nm usb
.Nd Universal Serial Bus
.Sh SYNOPSIS
.Cd "controller usb0"
.Sh DESCRIPTION
.Nx
provides machine-independent bus support and drivers for
.Tn USB
devices.
.Pp
The
.Nm
driver has three layers: the controller, the bus, and the
device layer. The controller attaches to a physical bus
(like
.Xr pci 4 ).
The
.Tn USB
bus attaches to the controller and the root hub attaches
to the controller.
Any devices attached to the bus will attach to the root hub
or another hub attached to the USB bus.
.Pp
The
.Nm uhub
device will always be present as it is needed for the
root hub.
.Pp
.Sh INTRODUCTION TO USB
The
.Tn USB
is a 12 Mb/s serial bus (1.5 Mb/s for low speed devices).
Each
.Tn USB
has a host controller that is the master of the bus;
all other devices on the bus only speak when spoken to.
.Pp
There can be up to 127 devices (apart from the host controller)
on a bus, each with its own address.
The addresses are assigned
dynamically by the host when each device is attached to the bus.
.Pp
Within each device there can be up to 16 endpoints.
Each endpoint
is individually addressed and the addresses are static.
Each of these endpoints will communicate in one of four different modes:
control, isochronous, bulk, or interrupt.
A device always has at least one endpoint.
This endpoint has address 0 and is a control
endpoint and is used to give commands to and extract basic data,
such as descriptors, from the device.
Each endpoint, except the control endpoint, is unidirectional.
.Pp
The endpoints in a device are grouped into interfaces.
An interface is a logical unit within a device; e.g.
a compound device with both a keyboard and a trackball would present
one interface for each.
An interface can sometimes be set into different modes,
called alternate settings, which affects how it operates.
Different alternate settings can have different endpoints
within it.
.Pp
A device may operate in different configurations.
Depending on the
configuration the device may present different sets of endpoints
and interfaces.
.Pp
Each device located on a hub has several
.Xr config 8
locators:
.Bl -tag -compact -width xxxxxx
.It Cd port
this is the number of the port on the closest upstream hub.
.It Cd configuration
this is the configuration the device must be in for this driver to attach.
This locator does not set the configuration; it is iterated by the bus
enumeration.
.It Cd interface
this is the interface number within a device that an interface driver
attaches to.
.El
.Pp
The bus enumeration of the
.Tn USB
bus proceeds in several steps:
.Bl -enum
.It
Any device specific driver can to attach to the device.
.It
If none is found, any device class specific driver can attach.
.It
If none is found, all configurations are iterated over.
For each configuration all the interface are iterated over and interface
drivers can attach.
If any interface driver attached in a certain
configuration the iteration over configurations is stopped.
.It
If still no drivers have been found, the generic
.Tn USB
driver can attach.
.El
.Sh USB CONTROLLER INTERFACE
Use the following to get access to the
.Tn USB
specific structurs and defines.
.Bd -literal
#include <sys/dev/usb.h>
.Ed
.Pp
The
.Pa /dev/usbN
can be opened and a few operations can be performed on it.
The
.Xr poll 2
system call will say that I/O is possible on the controller device when a
.Tn USB
device has been connected or disconnected to the bus.
.Pp
The following
.Xr ioctl 2
commands are supported on the controller device:
.Bl -tag -width xxxxxx
.It Dv USB_DISCOVER
This command will cause a complete bus discovery to be initiated.
If any devices attached or detached from the bus they will be
processed during this command.
This is the only way that new devices are found on the bus.
.It Dv USB_DEVICEINFO Fa "struct usb_device_info"
This command can be used to retrieve some information about a device
on the bus.
The
.Va addr
field should be filled before the call and the other fields will
be filled by information about the device on that address.
Should no such device exist an error is reported.
.Bd -literal
struct usb_device_info {
uByte addr; /* device address */
char product[USB_MAX_STRING_LEN];
char vendor[USB_MAX_STRING_LEN];
char revision[8];
uByte class;
uByte config;
uByte lowspeed;
int power;
int nports;
uByte ports[16];
#define USB_PORT_ENABLED 0xff
#define USB_PORT_SUSPENDED 0xfe
#define USB_PORT_POWERED 0xfd
#define USB_PORT_DISABLED 0xfc
};
.Ed
.Pp
The
.Va product ,
.Va vendor ,
and
.Va revision
fields contain self-explanatory descriptions of the device.
.Pp
The
.Va class
field contains the device class.
.Pp
The
.Va config
field shows the current configuration of the device.
.Pp
The
.Va lowspeed
field
is set if the device is a
.Tn USB
low speed device.
.Pp
The
.Va power
field shows the power consumption in milli-amps drawn at 5 volts,
or zero if the device is self powered.
.Pp
If the device is a hub the
.Va nports
field is non-zero and the
.Va ports
field contains the addresses of the connected devices.
If no device is connected to a port one of the
.Va USB_PORT_*
values indicates its status.
.It Dv USB_DEVICESTATS Fa "struct usb_device_stats"
This command retrieves statistics about the controller.
.Bd -literal
struct usb_device_stats {
u_long requests[4];
};
.Ed
.Pp
The
.Va requests
field is indexed by the transfer kind, i.e.
.Va UE_* ,
and indicates how many transfers of each kind that has been completed
by the controller.
.It Dv USB_REQUEST Fa "struct usb_ctl_request"
This command can be used to execute arbitrary requests on the control pipe.
This is
.Em DANGEROUS
and should be used with great care since it
can destroy the bus integrity.
.El
.Pp
The include file
.Aq Pa dev/usb/usb.h
contains definitions for the types used by the various
.Xr ioctl 2
calls.
The naming convention of the fields for the various
.Tn USB
descriptors exactly follows the naming in the
.Tn USB
specification.
Byte sized fields can be accessed directly, but word (16 bit)
sized fields must be access by the
.Fn UGETW field
and
.Fn USETW field value
macros to handle byte order and alignment properly.
.Pp
The include file
.Aq Pa dev/usb/usbhid.h
similarly contains the definitions for
Human Interface Devices
.Pq Tn HID .
.Sh SEE ALSO
The
.Tn USB
specifications can be found at
.Dv http://www.usb.org/developers/docs.htm .
.Pp
.Xr pci 4 ,
.Xr ohci 4 ,
.Xr uhci 4 ,
.Xr ugen 4 ,
.Xr uhid 4 ,
.Xr ukbd 4 ,
.Xr ulpt 4 ,
.Xr ums 4 ,
.Xr usbd 8 ,
.Xr usbdevs 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Fx 3.0 .
.Sh AUTHOR
The
.Nm
driver was written by
.An Lennart Augustsson (augustss@carlstedt.se) for the
.Nx
project.

69
share/man/man4/ohci.4 Normal file
View File

@ -0,0 +1,69 @@
.\" Copyright (c) 1999
.\" Nick Hibma <hibma@skylink.it>. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Bill Paul.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL NICK HIBMA OR THE VOICES IN HIS HEAD
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
.\" THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $Id: xl.4,v 1.3 1998/12/05 09:36:15 rnordier Exp $
.\"
.Dd February 21, 1999
.Dt 0HCI 4 i386
.Os FreeBSD
.Sh NAME
.Nm ohci
.Nd
OHCI USB Host Controller Driver
.Sh SYNOPSIS
.Cd "controller ohci0"
.Sh DESCRIPTION
The
.Nm
driver provides support for OHCI-type PCI based USB controllers. This
includes
.Bl -tag -width xxxxx
.It AcerLabs M5237 (Aladdin-V)
.It OPTi 82C861 (FireLink)
.It NEC uPD 9210
.It CMD Tech 670 (USB0670)
.It CMD Tech 673 (USB0673)
.El
or any other OHCI v1.0 compliant controller.
.Sh SEE ALSO
.Xr uhci 4
.Sh HISTORY
The
.Nm
device driver first appeared in
.Fx 3.0 .
.Sh AUTHOR
The
.Nm
driver was written by
.An Lennart Augustsson (augustss@carlstedt.se) for the
.Nx
project.

68
share/man/man4/uhci.4 Normal file
View File

@ -0,0 +1,68 @@
.\" Copyright (c) 1999
.\" Nick Hibma <hibma@skylink.it>. All rights reserved.
.\"
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Bill Paul.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL NICK HIBMA OR THE VOICES IN HIS HEAD
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
.\" THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd February 21, 1999
.Dt UHCI 4 i386
.Os FreeBSD
.Sh NAME
.Nm uhci
.Nd
UHCI USB Host Controller Driver
.Sh SYNOPSIS
.Cd "controller uhci0"
.Sh DESCRIPTION
The
.Nm
driver provides support for UHCI-type PCI based USB controllers. This
includes
.Bl -tag -width xxxxx
.It Intel 82371AB/EB (PIIX4)
.It Intel 82371SB (PIIX3)
.It VIA 83C572
.El
or any other UHCI v1.1 compliant controller.
.Sh SEE ALSO
.Xr ohci 4
.Sh HISTORY
The
.Nm
device driver first appeared in
.Fx 3.0 .
.Sh AUTHOR
The
.Nm
driver was written by
.An Lennart Augustsson (augustss@carlstedt.se) for the
.Nx
project.

297
share/man/man4/usb.4 Normal file
View File

@ -0,0 +1,297 @@
.\" Copyright (c) 1997, 1998
.\" Nick Hibma <hibma@skylink.it>. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Bill Paul.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY NICK HIBMA AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL NICK HIBMA OR THE VOICES IN HIS HEAD
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
.\" THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $Id: xl.4,v 1.3 1998/12/05 09:36:15 rnordier Exp $
.\"
.Dd February 21, 1999
.Dt USB 4 i386
.Os FreeBSD
.Sh NAME
.Nm usb
.Nd Universal Serial Bus
.Sh SYNOPSIS
.Cd "controller usb0"
.Sh DESCRIPTION
.Nx
provides machine-independent bus support and drivers for
.Tn USB
devices.
.Pp
The
.Nm
driver has three layers: the controller, the bus, and the
device layer. The controller attaches to a physical bus
(like
.Xr pci 4 ).
The
.Tn USB
bus attaches to the controller and the root hub attaches
to the controller.
Any devices attached to the bus will attach to the root hub
or another hub attached to the USB bus.
.Pp
The
.Nm uhub
device will always be present as it is needed for the
root hub.
.Pp
.Sh INTRODUCTION TO USB
The
.Tn USB
is a 12 Mb/s serial bus (1.5 Mb/s for low speed devices).
Each
.Tn USB
has a host controller that is the master of the bus;
all other devices on the bus only speak when spoken to.
.Pp
There can be up to 127 devices (apart from the host controller)
on a bus, each with its own address.
The addresses are assigned
dynamically by the host when each device is attached to the bus.
.Pp
Within each device there can be up to 16 endpoints.
Each endpoint
is individually addressed and the addresses are static.
Each of these endpoints will communicate in one of four different modes:
control, isochronous, bulk, or interrupt.
A device always has at least one endpoint.
This endpoint has address 0 and is a control
endpoint and is used to give commands to and extract basic data,
such as descriptors, from the device.
Each endpoint, except the control endpoint, is unidirectional.
.Pp
The endpoints in a device are grouped into interfaces.
An interface is a logical unit within a device; e.g.
a compound device with both a keyboard and a trackball would present
one interface for each.
An interface can sometimes be set into different modes,
called alternate settings, which affects how it operates.
Different alternate settings can have different endpoints
within it.
.Pp
A device may operate in different configurations.
Depending on the
configuration the device may present different sets of endpoints
and interfaces.
.Pp
Each device located on a hub has several
.Xr config 8
locators:
.Bl -tag -compact -width xxxxxx
.It Cd port
this is the number of the port on the closest upstream hub.
.It Cd configuration
this is the configuration the device must be in for this driver to attach.
This locator does not set the configuration; it is iterated by the bus
enumeration.
.It Cd interface
this is the interface number within a device that an interface driver
attaches to.
.El
.Pp
The bus enumeration of the
.Tn USB
bus proceeds in several steps:
.Bl -enum
.It
Any device specific driver can to attach to the device.
.It
If none is found, any device class specific driver can attach.
.It
If none is found, all configurations are iterated over.
For each configuration all the interface are iterated over and interface
drivers can attach.
If any interface driver attached in a certain
configuration the iteration over configurations is stopped.
.It
If still no drivers have been found, the generic
.Tn USB
driver can attach.
.El
.Sh USB CONTROLLER INTERFACE
Use the following to get access to the
.Tn USB
specific structurs and defines.
.Bd -literal
#include <sys/dev/usb.h>
.Ed
.Pp
The
.Pa /dev/usbN
can be opened and a few operations can be performed on it.
The
.Xr poll 2
system call will say that I/O is possible on the controller device when a
.Tn USB
device has been connected or disconnected to the bus.
.Pp
The following
.Xr ioctl 2
commands are supported on the controller device:
.Bl -tag -width xxxxxx
.It Dv USB_DISCOVER
This command will cause a complete bus discovery to be initiated.
If any devices attached or detached from the bus they will be
processed during this command.
This is the only way that new devices are found on the bus.
.It Dv USB_DEVICEINFO Fa "struct usb_device_info"
This command can be used to retrieve some information about a device
on the bus.
The
.Va addr
field should be filled before the call and the other fields will
be filled by information about the device on that address.
Should no such device exist an error is reported.
.Bd -literal
struct usb_device_info {
uByte addr; /* device address */
char product[USB_MAX_STRING_LEN];
char vendor[USB_MAX_STRING_LEN];
char revision[8];
uByte class;
uByte config;
uByte lowspeed;
int power;
int nports;
uByte ports[16];
#define USB_PORT_ENABLED 0xff
#define USB_PORT_SUSPENDED 0xfe
#define USB_PORT_POWERED 0xfd
#define USB_PORT_DISABLED 0xfc
};
.Ed
.Pp
The
.Va product ,
.Va vendor ,
and
.Va revision
fields contain self-explanatory descriptions of the device.
.Pp
The
.Va class
field contains the device class.
.Pp
The
.Va config
field shows the current configuration of the device.
.Pp
The
.Va lowspeed
field
is set if the device is a
.Tn USB
low speed device.
.Pp
The
.Va power
field shows the power consumption in milli-amps drawn at 5 volts,
or zero if the device is self powered.
.Pp
If the device is a hub the
.Va nports
field is non-zero and the
.Va ports
field contains the addresses of the connected devices.
If no device is connected to a port one of the
.Va USB_PORT_*
values indicates its status.
.It Dv USB_DEVICESTATS Fa "struct usb_device_stats"
This command retrieves statistics about the controller.
.Bd -literal
struct usb_device_stats {
u_long requests[4];
};
.Ed
.Pp
The
.Va requests
field is indexed by the transfer kind, i.e.
.Va UE_* ,
and indicates how many transfers of each kind that has been completed
by the controller.
.It Dv USB_REQUEST Fa "struct usb_ctl_request"
This command can be used to execute arbitrary requests on the control pipe.
This is
.Em DANGEROUS
and should be used with great care since it
can destroy the bus integrity.
.El
.Pp
The include file
.Aq Pa dev/usb/usb.h
contains definitions for the types used by the various
.Xr ioctl 2
calls.
The naming convention of the fields for the various
.Tn USB
descriptors exactly follows the naming in the
.Tn USB
specification.
Byte sized fields can be accessed directly, but word (16 bit)
sized fields must be access by the
.Fn UGETW field
and
.Fn USETW field value
macros to handle byte order and alignment properly.
.Pp
The include file
.Aq Pa dev/usb/usbhid.h
similarly contains the definitions for
Human Interface Devices
.Pq Tn HID .
.Sh SEE ALSO
The
.Tn USB
specifications can be found at
.Dv http://www.usb.org/developers/docs.htm .
.Pp
.Xr pci 4 ,
.Xr ohci 4 ,
.Xr uhci 4 ,
.Xr ugen 4 ,
.Xr uhid 4 ,
.Xr ukbd 4 ,
.Xr ulpt 4 ,
.Xr ums 4 ,
.Xr usbd 8 ,
.Xr usbdevs 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Fx 3.0 .
.Sh AUTHOR
The
.Nm
driver was written by
.An Lennart Augustsson (augustss@carlstedt.se) for the
.Nx
project.