[Discuss-gnuradio] NetBSD USRP USB changes committed to master repository

[Greg Troxel]

On Monday I committed the changes to ugen(4) that Joanne previously
described on the list to the master NetBSD repository.  The option is
enabled in GENERIC and GENERIC_LAPTOP on i386 and GENERIC on amd64,
and is described in the ugen(4) man page.

Updating to the latest -current should be sufficient to get these
changes.  Berndt Josef Wulf reports that they work for him when using
the fusb code, available at

http://acert.ir.bbn.com/viewvc/adroitgrdevel/adroitgrdevel/radio_test/usb/

I am interested in reports of how well this works on both i386 and
amd64.

It's pretty clear that getting pipelining closer to the hardware is
needed - this is being pushed upstream since it works and gets ~80% of
the likely speed gain.

From: Greg Troxel <address@hidden>
Subject: CVS commit: src
To: address@hidden
Date: Mon, 24 Jul 2006 14:24:50 +0000 (UTC)
Reply-To: address@hidden

Module Name:    src
Committed By:   gdt
Date:           Mon Jul 24 14:24:50 UTC 2006

Modified Files:
        src/share/man/man4: ugen.4
        src/sys/arch/i386/conf: GENERIC GENERIC_LAPTOP
        src/sys/dev/usb: files.usb ugen.c usb.h

Log Message:
Add UGEN_BULK_RA_WB, which allows users of ugen(4) to request read
ahead and write behind, improving performance for the Universal
Software Radio Peripheral (USRP) used with GNU Radio.

Enable UGEN_BULK_RA_WB in GENERIC and GENERIC_LAPTOP; behavior is
unchanged unless the new ioctl is called.

This code was written by Joanne Mikkelson under funding from DARPA's
ACERT program.

ok'd by christos@, tested by Berndt Josef Wulf


To generate a diff of this commit:
cvs rdiff -r1.21 -r1.22 src/share/man/man4/ugen.4
cvs rdiff -r1.762 -r1.763 src/sys/arch/i386/conf/GENERIC
cvs rdiff -r1.190 -r1.191 src/sys/arch/i386/conf/GENERIC_LAPTOP
cvs rdiff -r1.67 -r1.68 src/sys/dev/usb/files.usb
cvs rdiff -r1.83 -r1.84 src/sys/dev/usb/ugen.c
cvs rdiff -r1.73 -r1.74 src/sys/dev/usb/usb.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

-- 
    Greg Troxel <address@hidden>

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