Kamal R. Prasad wrote:
Hello,
I would like to unsubscribe myself from all freebsd mailing lists. I have
sent an unsubscribe to freebsd-hackers-unsubscribe, but did not get any
response to verify. Since the admin is on the mailing list, I would
appreciate if you can delete my name and/or email me the procedure to
follow.
thanks
-kamal
On 7/3/06, Julian Elischer <[EMAIL PROTECTED]> wrote:
Ian Dowse wrote:
>In message <[EMAIL PROTECTED]>, Hans Petter Selasky
writes:
>
>
>>But there is one problem, that has been overlooked, and that is High
speed
>>isochronous transfers, which are not supported by the existing USB
system. I
>>don't think that the EHCI specification was designed for scatter and
gather,
>>when you consider this:
>>
>>8 transfers of 0xC00 bytes has to fit on 7 pages. If this is going to
work,
>>and I am right, one page has to contain two transfers. (see page 43 of
>>ehci-r10.pdf)
>>
>>
>
>I haven't looked into the details, but the text in section 3.3.3
>seems to suggest that EHCI is designed to not require physically
>contiguous allocations here either, so the same approach of using
>bus_dmamap_load() should work:
>
> This data structure requires the associated data buffer to be
> contiguous (relative to virtual memory), but allows the physical
> memory pages to be non-contiguous. Seven page pointers are provided
> to support the expression of 8 isochronous transfers. The seven
> pointers allow for 3 (transactions) * 1024 (maximum packet size)
> * 8 (transaction records) (24576 bytes) to be moved with this
> data structure, regardless of the alignment offset of the first
> page.
>
>
yes, as long as the beffers are contiguous in some virtual space then
the maximum number of pages they
can need is 7.
(they actually fit into 6 but they may start part way through the first
page and may therefore overflow into a 7th).
>Ian
Go to: <http://lists.freebsd.org/mailman/listinfo>. Open up each list,
enter in your email address near the bottom, press unsubscribe, and you
should get an unsubscribe confirmation email-unless your spam blocker or
something similar is deleting the confirmation emails.
Either that, or you could login with your username and password and
delete your subscription that way as well. Again, this has to be done
for each mailing list you're subscribed to (or maybe there was a general
method from the web interface, but I forget..).
Best of luck,
-Garrett
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