I've been trying out the patches to enable isochronous transfers under
xHCI, and they work fine on my USB speaker. However, I've been having
trouble getting my high speed USB webcam to work. The NEC Express Card
I have rejects the first alternate setting that the uvcvideo driver
tries to install (altsetting 11), saying that it takes too much
bandwidth. This happens even when I plug the device directly into the
roothub with no other devices plugged in.
I would like to know if this is correct behavior for the host, as I
can't believe a device would advertise an alternate setting that took up
too much bandwidth by itself. Device descriptors and a log snippet are
attached.
The other problem is that uvcvideo then gives up on the device when
installing the alt setting fails, rather than trying the next less
resource-intensive alternate setting. The past, submit_urb() might fail
if there wasn't enough bandwidth for the isochronous transfers, but
under an xHCI host controller, it will fail sooner, when
usb_set_interface() is called. That needs to be fixed in all the USB
video drivers.
I figured out how to patch the gspca driver, but not uvcvideo. The
patch looks a bit hackish; can with experience with that driver look it
over? Can anyone tell me where to look for the usb_set_interface() in
uvcvideo?
Sarah Sharp
8<----------------------
>From 0e6bc81b178364ee9771c64a06ab006588c73ae6 Mon Sep 17 00:00:00 2001
From: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
Date: Mon, 12 Apr 2010 11:23:46 -0700
Subject: [PATCH] gspca: Try a less bandwidth-intensive alt setting.
Under OHCI, UHCI, and EHCI, if an alternate interface setting took too
much of the bus bandwidth, then submit_urb() would fail. The xHCI host
controller does bandwidth checking when the alternate interface setting is
installed, so usb_set_interface() can fail. If it does, try the next
alternate interface setting.
Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
---
drivers/media/video/gspca/gspca.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 222af47..6de3117 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -643,6 +643,7 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK
: USB_ENDPOINT_XFER_ISOC;
i = gspca_dev->alt; /* previous alt setting */
+find_alt:
if (gspca_dev->cam.reverse_alts) {
while (++i < gspca_dev->nbalt) {
ep = alt_xfer(&intf->altsetting[i], xfer);
@@ -666,10 +667,11 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
if (gspca_dev->nbalt > 1) {
gspca_input_destroy_urb(gspca_dev);
ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i);
- if (ret < 0) {
- err("set alt %d err %d", i, ret);
- ep = NULL;
- }
+ /* xHCI hosts will reject set interface requests
+ * if they take too much bandwidth, so try again.
+ */
+ if (ret < 0)
+ goto find_alt;
gspca_input_create_urb(gspca_dev);
}
return ep;
--
1.6.3.3
Bus 009 Device 002: ID 046d:09a5 Logitech, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x046d Logitech, Inc.
idProduct 0x09a5
bcdDevice 0.06
iManufacturer 0
iProduct 0
iSerial 2 0A539160
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 1183
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 0
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 133
dwClockFrequency 48.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x0000000e
Auto-Exposure Mode
Auto-Exposure Priority
Exposure Time (Absolute)
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 16384
bControlSize 2
bmControls 0x0000175b
Brightness
Contrast
Saturation
Sharpness
White Balance Temperature
Backlight Compensation
Gain
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x1b
None
NTSC - 525/60
SECAM - 625/50
NTSC - 625/50
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {82066163-7050-ab49-b8cc-b3855e8d221e}
bNumControl 10
bNrPins 1
baSourceID( 0) 2
bControlSize 2
bmControls( 0) 0xff
bmControls( 1) 0x03
iExtension 0
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 13
guidExtensionCode {82066163-7050-ab49-b8cc-b3855e8d221f}
bNumControl 8
bNrPins 1
baSourceID( 0) 2
bControlSize 2
bmControls( 0) 0x7f
bmControls( 1) 0x01
iExtension 0
VideoControl Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 10
guidExtensionCode {82066163-7050-ab49-b8cc-b3855e8d2252}
bNumControl 24
bNrPins 1
baSourceID( 0) 4
bControlSize 3
bmControls( 0) 0xff
bmControls( 1) 0xff
bmControls( 2) 0xff
iExtension 0
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 5
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
** UNRECOGNIZED: 20 41 01 0c 82 06 61 63 70 50 ab 49 b8 cc b3 85 5e 8d 22 50 14 01 04 03 ff ff 0f 00 00 00 00 00
** UNRECOGNIZED: 20 41 01 08 82 06 61 63 70 50 ab 49 b8 cc b3 85 5e 8d 22 51 03 01 04 03 19 00 00 00 00 00 01 00
** UNRECOGNIZED: 20 41 01 0b 82 06 61 63 70 50 ab 49 b8 cc b3 85 5e 8d 22 55 01 01 04 03 01 00 00 00 00 00 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x87 EP 7 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 8
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
VideoStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 3
wTotalLength 624
bEndPointAddress 129
bmInfo 0
bTerminalLink 5
bStillCaptureMethod 2
bTriggerSupport 1
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 11
bmaControls( 1) 11
bmaControls( 2) 11
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 1
bNumFrameDescriptors 5
bFlags 1
Fixed-size samples: Yes
bDefaultFrameIndex 3
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 160
wHeight 120
dwMinBitRate 1536000
dwMaxBitRate 9216000
dwMaxVideoFrameBufferSize 38400
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 176
wHeight 144
dwMinBitRate 2027520
dwMaxBitRate 12165120
dwMaxVideoFrameBufferSize 50688
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 320
wHeight 240
dwMinBitRate 6144000
dwMaxBitRate 36864000
dwMaxVideoFrameBufferSize 153600
dwDefaultFrameInterval 666666
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 352
wHeight 288
dwMinBitRate 8110080
dwMaxBitRate 48660480
dwMaxVideoFrameBufferSize 202752
dwDefaultFrameInterval 666666
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 147456000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 666666
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 31
bDescriptorType 36
bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
bEndpointAddress 0
bNumImageSizePatterns 5
wWidth( 0) 160
wHeight( 0) 120
wWidth( 1) 176
wHeight( 1) 144
wWidth( 2) 320
wHeight( 2) 240
wWidth( 3) 352
wHeight( 3) 288
wWidth( 4) 640
wHeight( 4) 480
bNumCompressionPatterns 5
bCompression( 0) 5
bCompression( 1) 10
bCompression( 2) 15
bCompression( 3) 20
bCompression( 4) 25
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 2
bNumFrameDescriptors 5
guidFormat {59555932-0000-1000-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 3
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 160
wHeight 120
dwMinBitRate 1536000
dwMaxBitRate 9216000
dwMaxVideoFrameBufferSize 38400
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 176
wHeight 144
dwMinBitRate 2027520
dwMaxBitRate 12165120
dwMaxVideoFrameBufferSize 50688
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 320
wHeight 240
dwMinBitRate 6144000
dwMaxBitRate 36864000
dwMaxVideoFrameBufferSize 153600
dwDefaultFrameInterval 666666
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 352
wHeight 288
dwMinBitRate 8110080
dwMaxBitRate 48660480
dwMaxVideoFrameBufferSize 202752
dwDefaultFrameInterval 666666
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 147456000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 666666
bFrameIntervalType 6
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 500000
dwFrameInterval( 3) 666666
dwFrameInterval( 4) 1000000
dwFrameInterval( 5) 2000000
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 3 (STILL_IMAGE_FRAME)
bEndpointAddress 0
bNumImageSizePatterns 5
wWidth( 0) 160
wHeight( 0) 120
wWidth( 1) 176
wHeight( 1) 144
wWidth( 2) 320
wHeight( 2) 240
wWidth( 3) 352
wHeight( 3) 288
wWidth( 4) 640
wHeight( 4) 480
bNumCompressionPatterns 5
bCompression( 0) 5
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x00c0 1x 192 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0180 1x 384 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0280 1x 640 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 5
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0320 1x 800 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 6
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x03b0 1x 944 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 7
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0a80 2x 640 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 8
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0b20 2x 800 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 9
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0be0 2x 992 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 10
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x1380 3x 896 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 11
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x13fc 3x 1020 bytes
bInterval 1
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 2
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 2 Streaming
bFunctionProtocol 0
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 38
bInCollection 1
baInterfaceNr( 0) 3
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Microphone
bAssocTerminal 0
bNrChannels 1
wChannelConfig 0x0000
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 1
bSourceID 5
iTerminal 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 5
bSourceID 1
bControlSize 1
bmaControls( 0) 0x03
Mute
Volume
iFeature 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bDelay 1 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 1
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 16000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0024 1x 36 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
Apr 9 16:20:55 xanatos kernel: [ 1425.109695] usb 9-3.2: ep 0x81 - rounding interval to 1 microframes
Apr 9 16:20:55 xanatos kernel: [ 1425.109699] xhci_hcd 0000:05:00.0: add ep 0x81, slot id 3, new drop flags = 0x0, new add flags = 0x8, new slot info = 0x18300002
Apr 9 16:20:55 xanatos kernel: [ 1425.109703] xhci_hcd 0000:05:00.0: xhci_check_bandwidth called for udev ffff880070557000
Apr 9 16:20:55 xanatos kernel: [ 1425.109705] xhci_hcd 0000:05:00.0: New Input Control Context:
Apr 9 16:20:55 xanatos kernel: [ 1425.109709] xhci_hcd 0000:05:00.0: @ffff88006cb9b000 (virt) @6cb9b000 (dma) 0x000000 - drop flags
Apr 9 16:20:55 xanatos kernel: [ 1425.109712] xhci_hcd 0000:05:00.0: @ffff88006cb9b004 (virt) @6cb9b004 (dma) 0x000009 - add flags
Apr 9 16:20:55 xanatos kernel: [ 1425.109716] xhci_hcd 0000:05:00.0: @ffff88006cb9b008 (virt) @6cb9b008 (dma) 0x000000 - rsvd2[0]
Apr 9 16:20:55 xanatos kernel: [ 1425.109719] xhci_hcd 0000:05:00.0: @ffff88006cb9b00c (virt) @6cb9b00c (dma) 0x000000 - rsvd2[1]
Apr 9 16:20:55 xanatos kernel: [ 1425.109723] xhci_hcd 0000:05:00.0: @ffff88006cb9b010 (virt) @6cb9b010 (dma) 0x000000 - rsvd2[2]
Apr 9 16:20:55 xanatos kernel: [ 1425.109726] xhci_hcd 0000:05:00.0: @ffff88006cb9b014 (virt) @6cb9b014 (dma) 0x000000 - rsvd2[3]
Apr 9 16:20:55 xanatos kernel: [ 1425.109730] xhci_hcd 0000:05:00.0: @ffff88006cb9b018 (virt) @6cb9b018 (dma) 0x000000 - rsvd2[4]
Apr 9 16:20:55 xanatos kernel: [ 1425.109733] xhci_hcd 0000:05:00.0: @ffff88006cb9b01c (virt) @6cb9b01c (dma) 0x000000 - rsvd2[5]
Apr 9 16:20:55 xanatos kernel: [ 1425.109736] xhci_hcd 0000:05:00.0: Slot Context:
Apr 9 16:20:55 xanatos kernel: [ 1425.109739] xhci_hcd 0000:05:00.0: @ffff88006cb9b020 (virt) @6cb9b020 (dma) 0x18300002 - dev_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109742] xhci_hcd 0000:05:00.0: @ffff88006cb9b024 (virt) @6cb9b024 (dma) 0x030000 - dev_info2
Apr 9 16:20:55 xanatos kernel: [ 1425.109746] xhci_hcd 0000:05:00.0: @ffff88006cb9b028 (virt) @6cb9b028 (dma) 0x000000 - tt_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109749] xhci_hcd 0000:05:00.0: @ffff88006cb9b02c (virt) @6cb9b02c (dma) 0x000000 - dev_state
Apr 9 16:20:55 xanatos kernel: [ 1425.109753] xhci_hcd 0000:05:00.0: @ffff88006cb9b030 (virt) @6cb9b030 (dma) 0x000000 - rsvd[0]
Apr 9 16:20:55 xanatos kernel: [ 1425.109756] xhci_hcd 0000:05:00.0: @ffff88006cb9b034 (virt) @6cb9b034 (dma) 0x000000 - rsvd[1]
Apr 9 16:20:55 xanatos kernel: [ 1425.109759] xhci_hcd 0000:05:00.0: @ffff88006cb9b038 (virt) @6cb9b038 (dma) 0x000000 - rsvd[2]
Apr 9 16:20:55 xanatos kernel: [ 1425.109763] xhci_hcd 0000:05:00.0: @ffff88006cb9b03c (virt) @6cb9b03c (dma) 0x000000 - rsvd[3]
Apr 9 16:20:55 xanatos kernel: [ 1425.109766] xhci_hcd 0000:05:00.0: Endpoint 00 Context:
Apr 9 16:20:55 xanatos kernel: [ 1425.109768] xhci_hcd 0000:05:00.0: @ffff88006cb9b040 (virt) @6cb9b040 (dma) 0x000000 - ep_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109772] xhci_hcd 0000:05:00.0: @ffff88006cb9b044 (virt) @6cb9b044 (dma) 0x400026 - ep_info2
Apr 9 16:20:55 xanatos kernel: [ 1425.109775] xhci_hcd 0000:05:00.0: @ffff88006cb9b048 (virt) @6cb9b048 (dma) 0x578e6001 - deq
Apr 9 16:20:55 xanatos kernel: [ 1425.109778] xhci_hcd 0000:05:00.0: @ffff88006cb9b050 (virt) @6cb9b050 (dma) 0x000000 - tx_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109782] xhci_hcd 0000:05:00.0: @ffff88006cb9b054 (virt) @6cb9b054 (dma) 0x000000 - rsvd[0]
Apr 9 16:20:55 xanatos kernel: [ 1425.109785] xhci_hcd 0000:05:00.0: @ffff88006cb9b058 (virt) @6cb9b058 (dma) 0x000000 - rsvd[1]
Apr 9 16:20:55 xanatos kernel: [ 1425.109789] xhci_hcd 0000:05:00.0: @ffff88006cb9b05c (virt) @6cb9b05c (dma) 0x000000 - rsvd[2]
Apr 9 16:20:55 xanatos kernel: [ 1425.109792] xhci_hcd 0000:05:00.0: Endpoint 01 Context:
Apr 9 16:20:55 xanatos kernel: [ 1425.109795] xhci_hcd 0000:05:00.0: @ffff88006cb9b060 (virt) @6cb9b060 (dma) 0x000000 - ep_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109798] xhci_hcd 0000:05:00.0: @ffff88006cb9b064 (virt) @6cb9b064 (dma) 0x000000 - ep_info2
Apr 9 16:20:55 xanatos kernel: [ 1425.109801] xhci_hcd 0000:05:00.0: @ffff88006cb9b068 (virt) @6cb9b068 (dma) 0x000000 - deq
Apr 9 16:20:55 xanatos kernel: [ 1425.109805] xhci_hcd 0000:05:00.0: @ffff88006cb9b070 (virt) @6cb9b070 (dma) 0x000000 - tx_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109808] xhci_hcd 0000:05:00.0: @ffff88006cb9b074 (virt) @6cb9b074 (dma) 0x000000 - rsvd[0]
Apr 9 16:20:55 xanatos kernel: [ 1425.109812] xhci_hcd 0000:05:00.0: @ffff88006cb9b078 (virt) @6cb9b078 (dma) 0x000000 - rsvd[1]
Apr 9 16:20:55 xanatos kernel: [ 1425.109815] xhci_hcd 0000:05:00.0: @ffff88006cb9b07c (virt) @6cb9b07c (dma) 0x000000 - rsvd[2]
Apr 9 16:20:55 xanatos kernel: [ 1425.109818] xhci_hcd 0000:05:00.0: Endpoint 02 Context:
Apr 9 16:20:55 xanatos kernel: [ 1425.109821] xhci_hcd 0000:05:00.0: @ffff88006cb9b080 (virt) @6cb9b080 (dma) 0x000000 - ep_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109824] xhci_hcd 0000:05:00.0: @ffff88006cb9b084 (virt) @6cb9b084 (dma) 0x3fc022a - ep_info2
Apr 9 16:20:55 xanatos kernel: [ 1425.109828] xhci_hcd 0000:05:00.0: @ffff88006cb9b088 (virt) @6cb9b088 (dma) 0x657a8001 - deq
Apr 9 16:20:55 xanatos kernel: [ 1425.109831] xhci_hcd 0000:05:00.0: @ffff88006cb9b090 (virt) @6cb9b090 (dma) 0x000000 - tx_info
Apr 9 16:20:55 xanatos kernel: [ 1425.109834] xhci_hcd 0000:05:00.0: @ffff88006cb9b094 (virt) @6cb9b094 (dma) 0x000000 - rsvd[0]
Apr 9 16:20:55 xanatos kernel: [ 1425.109838] xhci_hcd 0000:05:00.0: @ffff88006cb9b098 (virt) @6cb9b098 (dma) 0x000000 - rsvd[1]
Apr 9 16:20:55 xanatos kernel: [ 1425.109841] xhci_hcd 0000:05:00.0: @ffff88006cb9b09c (virt) @6cb9b09c (dma) 0x000000 - rsvd[2]
Apr 9 16:20:55 xanatos kernel: [ 1425.109845] xhci_hcd 0000:05:00.0: Command ring enq = 0x671d6210 (DMA)
Apr 9 16:20:55 xanatos kernel: [ 1425.109848] xhci_hcd 0000:05:00.0: // Ding dong!
Apr 9 16:20:55 xanatos kernel: [ 1425.109854] xhci_hcd 0000:05:00.0: `MEM_WRITE_DWORD(3'b000, 32'hffffc90019534800, 32'h0, 4'hf);
Apr 9 16:20:55 xanatos kernel: [ 1425.110026] xhci_hcd 0000:05:00.0: op reg status = 00000008
Apr 9 16:20:55 xanatos kernel: [ 1425.110029] xhci_hcd 0000:05:00.0: ir set irq_pending = 00000003
Apr 9 16:20:55 xanatos kernel: [ 1425.110031] xhci_hcd 0000:05:00.0: Event ring dequeue ptr:
Apr 9 16:20:55 xanatos kernel: [ 1425.110034] xhci_hcd 0000:05:00.0: @671d64d0 671d6200 00000000 08000000 03008400
Apr 9 16:20:55 xanatos kernel: [ 1425.110041] xhci_hcd 0000:05:00.0: `MEM_WRITE_DWORD(3'b000, 32'hffffc90019534024, 32'h8, 4'hf);
Apr 9 16:20:55 xanatos kernel: [ 1425.110048] xhci_hcd 0000:05:00.0: `MEM_WRITE_DWORD(3'b000, 32'hffffc90019534620, 32'h3, 4'hf);
Apr 9 16:20:55 xanatos kernel: [ 1425.110055] xhci_hcd 0000:05:00.0: In xhci_handle_event
Apr 9 16:20:55 xanatos kernel: [ 1425.110057] xhci_hcd 0000:05:00.0: xhci_handle_event - OS owns TRB
Apr 9 16:20:55 xanatos kernel: [ 1425.110060] xhci_hcd 0000:05:00.0: xhci_handle_event - calling handle_cmd_completion
Apr 9 16:20:55 xanatos kernel: [ 1425.110063] xhci_hcd 0000:05:00.0: Completed config ep cmd
Apr 9 16:20:55 xanatos kernel: [ 1425.110067] xhci_hcd 0000:05:00.0: Command ring deq = 0x671d6210 (DMA)
Apr 9 16:20:55 xanatos kernel: [ 1425.110070] xhci_hcd 0000:05:00.0: xhci_handle_event - returned from handle_cmd_completion
Apr 9 16:20:55 xanatos kernel: [ 1425.110073] xhci_hcd 0000:05:00.0: Event ring deq = 0x671d64e0 (DMA)
Apr 9 16:20:55 xanatos kernel: [ 1425.110082] xhci_hcd 0000:05:00.0: // Write event ring dequeue pointer, preserving EHB bit
Apr 9 16:20:55 xanatos kernel: [ 1425.110085] xhci_hcd 0000:05:00.0: `MEM_WRITE_DWORD(3'b000, 64'hffffc90019534638, 64'h671d64e0, 4'hf);
Apr 9 16:20:55 xanatos kernel: [ 1425.110088] xhci_hcd 0000:05:00.0: In xhci_handle_event
Apr 9 16:20:55 xanatos kernel: [ 1425.110098] xhci_hcd 0000:05:00.0: `MEM_WRITE_DWORD(3'b000, 64'hffffc90019534638, 64'h671d64e8, 4'hf);
Apr 9 16:20:55 xanatos kernel: [ 1425.110109] usb 9-3.2: Not enough bandwidth for new device state.
Apr 9 16:20:55 xanatos kernel: [ 1425.110112] xhci_hcd 0000:05:00.0: xhci_reset_bandwidth called for udev ffff880070557000
Apr 9 16:20:55 xanatos kernel: [ 1425.110116] xhci_hcd 0000:05:00.0: Freeing ring at ffff88006b866780
Apr 9 16:20:55 xanatos kernel: [ 1425.110119] xhci_hcd 0000:05:00.0: Freeing DMA segment at ffff8800657a8000 (virtual) 0x657a8000 (DMA)
Apr 9 16:20:55 xanatos kernel: [ 1425.110122] xhci_hcd 0000:05:00.0: Freeing priv segment structure at ffff880076c0c040
Apr 9 16:20:55 xanatos kernel: [ 1425.110131] usb 9-3.2: Not enough bandwidth for altsetting 11
