This is where I'm going with fwcontrol
Sean Bruno
sbruno at miralink.com
Fri Aug 29 18:16:29 UTC 2008
Dieter wrote:
> More nit picking :-)
>
> Should
>
>
>> Message ID Root ID R T Gap Count
>> 00(2 bits) (5 bits) 1 1 (6 bits)
>>
>
> be
>
> Message ID Root ID R T Gap Count
> 00(2 bits) (6 bits) 1 1 (6 bits)
>
> send_phy_config() ANDs root_node with 0x3f, and the
> "Physical ID" field in the controller register is
> 6 bits.
>
Well, according to the 1394 documentation, no. The root ID is
definitely 5 bits.
The gap count is also 5 bits, I must have mis-counted. So, really it
should be:
Message ID Root ID R T Gap Count
00(2 bits) (5 bits) 1 1 (5 bits)
This means that the Root ID and the Gap Count cannot exceed 0x3f(63).
So, the masking
of the values instead of generating and error seems wrong to me. I'm
going to put in error checking
to make sure the values comply with the specification and document the
correct values in the man page
and the comments of the code.
--
Sean Bruno
MiraLink Corporation
6015 NE 80th Ave, Ste 100
Portland, OR 97218
Phone 503-621-5143
Fax 503-621-5199
MSN: sbruno at miralink.com
Google: seanwbruno at gmail.com
Yahoo: sean_bruno at yahoo.com
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