Date: Wed, 2 Jun 2010 18:25:25 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: "Marcelo/Porks" <marcelorossi@gmail.com> Cc: Garrett Cooper <yanefbsd@gmail.com>, current@freebsd.org Subject: Re: Fwd: umodem (4) recognize a CDC-ACM device Message-ID: <201006021825.25337.hselasky@c2i.net> In-Reply-To: <AANLkTim-3GuF3us0SLnZs1iCPvEpQKxYJZ5Rl7-ItFhp@mail.gmail.com> References: <AANLkTinuhcIfsFvowzbsDJWy-gqob40oNxUPN-OvXc2E@mail.gmail.com> <201006021750.17588.hselasky@c2i.net> <AANLkTim-3GuF3us0SLnZs1iCPvEpQKxYJZ5Rl7-ItFhp@mail.gmail.com>
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> > Hi,
> >
> > Can you dump the USB descriptors of your device?
>
> Hi, right now I can do this at "FreeBSD 8.0-RELEASE-p2 #8 r206060M",
> but If you prefer tonight I can dump from 'freebsd-current' box.
>
> Thank you
Hi,
The problem is that LOW speed does not support BULK transfers according to the
USB specification. I guess we could switch that support on, though I'd rather
stick with the spec.
Try changing this line in:
src/sys/dev/usb/usb_transfer.c
[USB_SPEED_LOW] = 0, /* not supported */
Into:
[USB_SPEED_LOW] = 8, /* not supported according to USB
spec. */
>
> # usbconfig -u 2 -a 2 dump_device_desc dump_curr_config_desc
> ugen2.2: <USB-232 www.recursion.jp> at usbus2, cfg=0 md=HOST spd=LOW
> (1.5Mbps) pwr=ON
...
> Endpoint 0
> bLength = 0x0007
> bDescriptorType = 0x0005
> bEndpointAddress = 0x0001
> bmAttributes = 0x0002
^^^ BULK
> wMaxPacketSize = 0x0008
> bInterval = 0x0000
> bRefresh = 0x0000
> bSynchAddress = 0x0000
>
> Endpoint 1
> bLength = 0x0007
> bDescriptorType = 0x0005
> bEndpointAddress = 0x0081
> bmAttributes = 0x0002
^^^ BULK
> wMaxPacketSize = 0x0008
> bInterval = 0x0000
> bRefresh = 0x0000
> bSynchAddress = 0x0000
>
...
--HPS
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