From owner-freebsd-firewire@FreeBSD.ORG  Wed Apr 28 09:55:37 2004
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From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: Buzz Slye <buzz@gaia.arc.nasa.gov>
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cc: freebsd-firewire@freebsd.org
Subject: Re: iso receive
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You need to allocate receive buffer by ioctl() with FW_SSTBUF before
setting the channel.

The only way to stop the iso listening is to close the fd for now.

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html

At Tue, 27 Apr 2004 12:46:53 -0700 (PDT),
Buzz Slye wrote:
> 
> 
>     The following code is used to set the channel to listen to for
>     iso receive.
> 
>     int raw1394_set_channel(struct raw1394_handle *handle, int channel)
>     {
>         struct fw_isochreq chreq;
> 
>         chreq.ch = channel;
>         chreq.tag = 0;
>         if (ioctl(handle->fd, FW_SRSTREAM, &chreq) < 0) return (-1);
> 
>         return 0;
>     }
> 
>     This code crashes the system.  What are we doing wrong here?
> 
>     It used to work OK last june 2003 in version 1.2.4.10 of fwdev.c
> 
>     Also, how does one stop iso listening on a channel?
> 
>          Robert Slye
>          NASA - Ames Research Center
>          Moffett Field CA   94035
> 
>          buzz@gaia.arc.nasa.gov
> 
> 
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