Date: Sat, 11 Jul 2009 20:17:28 +0100 From: Andrew Thompson <thompsa@FreeBSD.org> To: Hans Petter Selasky <hselasky@c2i.net> Cc: usb@freebsd.org, freebsd-current@freebsd.org Subject: Re: USB polling Message-ID: <1280352d0907111217r5c218cdctf158dbfc588da304@mail.gmail.com> In-Reply-To: <200907111710.18843.hselasky@c2i.net> References: <1280352d0907101020q69f494cdndb01ff14ecf7ea8c@mail.gmail.com> <200907111710.18843.hselasky@c2i.net>
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2009/7/11 Hans Petter Selasky <hselasky@c2i.net>: > On Friday 10 July 2009 19:20:01 Andrew Thompson wrote: >> Hi, >> >> The one usb task that is still an issue for 8.0 is the polling >> support. The code needs to call into the host controller driver to >> check if the usb descriptor has been marked as done and call the >> completion callback. I am now traveling so cant look at it, if anyone >> wants to have a look it would be fantastic. This is needed for places >> where a usb keyboard is used and interrupts are disabled (root mount, >> DDB). > > Hi, > > Probably we can implement USB polling with minimal transfer support. That > basically means: > > - no timeouts > - no automatic clear-stall > > Only support for ukbd and umass. > > Shouldn't be too hard. Thats pretty much what we need, at least for 8.0. Andrew
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