Doug / smarc-fsl-linux-kernel

23 Sep, 2009

1 commit

  • 6682bb39e   USB: Fix SS endpoint companion descriptor parsing. ... Browse Code »

    When there's a descriptor after the SuperSpeed endpoint companion
    descriptor, the previous code would have skipped over twice the length it
    was supposed to. This code fixes crashes seen with UASP devices (which
    have a UASP descriptor after the SS endpoint companion descriptor).

    Signed-off-by: Sarah Sharp
    Cc: stable
    Signed-off-by: Greg Kroah-Hartman

    Sarah Sharp
     

29 Jul, 2009

1 commit

  • 9f8e44381   USB: Fix parsing of SuperSpeed Endpoint Companion descriptor. ... Browse Code »

    usb_parse_ss_endpoint_companion() was supposed to allocate a structure to
    hold the SuperSpeed Endpoint Companion descriptor, and either copy the
    values the device returned, or fill in default values if the device
    descriptor did not include the companion descriptor.

    However, the previous code would miss the last endpoint in a configuration
    with no descriptors after it. Make usb_parse_endpoint() allocate the SS
    endpoint companion descriptor and fill it with default values, even if
    we've run out of buffer space in this configuration descriptor.

    Signed-off-by: Sarah Sharp
    Signed-off-by: Greg Kroah-Hartman

    Sarah Sharp
     

16 Jun, 2009

3 commits

  • f0058c627   USB: Change names of SuperSpeed ep companion descriptor structs. ... Browse Code »

    Differentiate between SuperSpeed endpoint companion descriptor and the
    wireless USB endpoint companion descriptor. Make all structure names for
    this descriptor have "ss" (SuperSpeed) in them. David Vrabel asked for
    this change in http://marc.info/?l=linux-usb&m=124091465109367&w=2

    Reported-by: David Vrabel
    Signed-off-by: Sarah Sharp
    Signed-off-by: Greg Kroah-Hartman

    Sarah Sharp
     
  • 663c30d08   USB: Parse and store the SuperSpeed endpoint companion descriptors. ... Browse Code »

    The USB 3.0 bus specification added an "Endpoint Companion" descriptor that is
    supposed to follow all SuperSpeed Endpoint descriptors. This descriptor is used
    to extend the bus protocol to allow more packets to be sent to an endpoint per
    "microframe". The word microframe was removed from the USB 3.0 specification
    because the host controller does not send Start Of Frame (SOF) symbols down the
    USB 3.0 wires.

    The descriptor defines a bMaxBurst field, which indicates the number of packets
    of wMaxPacketSize that a SuperSpeed device can send or recieve in a service
    interval. All non-control endpoints may set this value as high as 16 packets
    (bMaxBurst = 15).

    The descriptor also allows isochronous endpoints to further specify that they
    can send and receive multiple bursts per service interval. The bmAttributes
    allows them to specify a "Mult" of up to 3 (bmAttributes = 2).

    Bulk endpoints use bmAttributes to report the number of "Streams" they support.
    This was an extension of the endpoint pipe concept to allow multiple mass
    storage device commands to be outstanding for one bulk endpoint at a time. This
    should allow USB 3.0 mass storage devices to support SCSI command queueing.
    Bulk endpoints can say they support up to 2^16 (65,536) streams.

    The information in the endpoint companion descriptor must be stored with the
    other device, config, interface, and endpoint descriptors because the host
    controller needs to access them quickly, and we need to install some default
    values if a SuperSpeed device doesn't provide an endpoint companion descriptor.

    Signed-off-by: Sarah Sharp
    Signed-off-by: Greg Kroah-Hartman

    Sarah Sharp
     
  • 6b403b020   USB: Add SuperSpeed to the list of USB device speeds. ... Browse Code »

    Modify the USB core to handle the new USB 3.0 speed, "SuperSpeed". This
    is 5.0 Gbps (wire speed). There are probably more places that check for
    speed that I've missed.

    SuperSpeed devices have a 512 byte endpoint 0 max packet size. This shows
    up as a bMaxPacketSize0 set to 0x09 (see table 9-8 of the USB 3.0 bus
    spec).

    xHCI spec says that the xHC can handle intervals up to 2^15 microframes. That
    might change when real silicon becomes available.

    Add FIXME note for SuperSpeed isochronous endpoints. They can transmit up
    to 16 packets in one "burst" before they wait for an acknowledgment of the
    packets. They can do up to 3 bursts per microframe (determined by the
    mult value in the endpoint companion descriptor). The xHCI driver doesn't
    have support for isoc yet, so fix this later.

    Signed-off-by: Sarah Sharp
    Signed-off-by: Greg Kroah-Hartman

    Sarah Sharp
     

25 Apr, 2008

1 commit

  • caa9ef672   USB: ehci tolerates some buggy devices ... Browse Code »

    This teaches EHCI how to to work around bugs in certain high speed
    devices, by accomodating "bulk" packets that exceed the 512 byte
    constant value required by the USB 2.0 specification. (Have a
    look at section 5.8.3, paragraphs 1 and 3.)

    It also makes the descriptor parsing code warn when it encounters
    such bugs. (We've had reports of maybe two or three such devices,
    all pretty recent.)

    Such devices are nonconformant. The proper fix is have the vendors
    of those devices do the simple, obvious, and correct thing ... which
    will let them be used with USB hosts that don't have workarounds for
    this particular vendor bug. But unless/until they do, we can at least
    have one of the high speed HCDs work with such buggy devices.

    Signed-off-by: David Brownell
    Signed-off-by: Greg Kroah-Hartman

    David Brownell
     

02 Feb, 2008

1 commit

13 Oct, 2007

1 commit

13 Jul, 2007

3 commits

  • 165fe97ed   USB: add IAD support to usbfs and sysfs ... Browse Code »

    USB_IAD: Adds support for USB Interface Association Descriptors.

    This patch adds support to the USB host stack for parsing, storing, and
    displaying Interface Association Descriptors. In /proc/bus/usb/devices
    lines starting with A: show the fields in an IAD. In sysfs if an
    interface on a USB device is referenced by an IAD the following files
    will be added to the sysfs directory for that interface:
    iad_bFirstInterface, iad_bInterfaceCount, iad_bFunctionClass, and
    iad_bFunctionSubClass, iad_bFunctionProtocol

    Signed-off-by: Craig W. Nadler
    Signed-off-by: Greg Kroah-Hartman

    Craig W. Nadler
     
  • 300871cd9   USB: Fix up full-speed bInterval values in high-speed interrupt descriptor ... Browse Code »

    Many device manufacturers are using full-speed bInterval values in high-speed
    interrupt endpoint descriptors. If the bInterval value is greater than 16,
    assume the device uses full-speed descriptors and fix the value accordingly.

    Signed-off-by: Laurent Pinchart
    Acked-by: Alan Stern
    Signed-off-by: Greg Kroah-Hartman

    Laurent Pinchart
     
  • 60aac1ec2   USB: Handle bogus low-speed Bulk endpoints ... Browse Code »

    A noticeable number of low-speed devices mistakenly include
    descriptors for Bulk endpoints, which is forbidden by the USB spec.
    In an attempt to make such devices more usable, this patch (as924)
    converts the descriptors to Interrupt with an interval of 1 ms.

    Signed-off-by: Alan Stern
    Signed-off-by: Greg Kroah-Hartman

    Alan Stern
     

09 Jun, 2007

1 commit

23 May, 2007

1 commit

28 Sep, 2006

1 commit

01 Jul, 2006

1 commit

18 Nov, 2005

1 commit

29 Oct, 2005

2 commits

19 Apr, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds