Hi frank,
I am working on Davinci platform using 2.6.23 git kernel. Can you
please provide me the USB CPPI DMA patch for 2.6.23 git kernel.
It will help me to measure USB performance with DMA enabled
on our custom board.
Thanks and Regards,
Padmanabha.s
Paddy,
It's glad to know you also uses 2.6.23 kernel. Does the IDE HDD
works on your board?
I encountered the IDE hdd cannot mount issue:
http://www.mail-archive.com/davinci-linux-open-source@linux.davincidsp.com/msg06475.html
Thanks
Frank
paddy wrote:
Hi frank,
I am working on
Hi,
I am working on Davinci platform using 2.6.23 git kernel. Can you
please provide me the USB CPPI DMA patch for 2.6.23 git kernel.
It will help me to measure USB performance with DMA enabled
on our custom board.
Thanks and Regards,
Padmanabha.s
2008/5/26, Subbrathnam, Swaminathan [EMAIL PROTECTED]:
I am attaching patch for enabling support for DMA mode in DaVinci USB
controller. This is a forward port of the patch 45 (DMA functionality only)
on DaVinci 2.6.10 kernel.
Regards
Swami
and DaVinci Gits.
swami
From: [EMAIL PROTECTED] [EMAIL PROTECTED] On Behalf Of Ali Sohanghpurwala
[EMAIL PROTECTED]
Sent: Thursday, July 31, 2008 1:50 AM
To: davinci-linux-open-source@linux.davincidsp.com
Subject: Re: USB CPPI DMA patch for DaVinci
2008/5/26
; Michael Gao
Subject: Re: USB CPPI DMA patch for DaVinci
All,
I'm testing USB driver with DMA support. My custom board have 256M
DDR memory.
When i set mem=112M in bootargs, USB works well with DMA mode. When i
set mem=120M,
kernel boot ok, but USB driver crashed while writing. I thought
All,
I'm testing USB driver with DMA support. My custom board have 256M
DDR memory.
When i set mem=112M in bootargs, USB works well with DMA mode. When i
set mem=120M,
kernel boot ok, but USB driver crashed while writing. I thought it
caused by system memory map.
we know
, 2008 8:24 AM
To: Ashuaria Lee
Cc: Subbrathnam, Swaminathan; davinci-linux-open-source
Subject: Re: USB CPPI DMA patch for DaVinci
Lee, Swami,
I did a simple and quick test. The kernel was also configured with
default setting.
It seems this patch fixed USB stability issue.
test case
[EMAIL PROTECTED]
Sent: Wednesday, May 28, 2008 8:24 AM
To: Ashuaria Lee
Cc: Subbrathnam, Swaminathan; davinci-linux-open-source
Subject: Re: USB CPPI DMA patch for DaVinci
Lee, Swami,
I did a simple and quick test. The kernel was also configured with
default
Lee,
We all need to thanks Swami's great work. That is exactly Swami's patch.
I did not change any logic of it. I just add some code and let it can
run on Neuros
OSD 2.0 custom board. We currently work on git tree 2.6.23, So i ported it
to git 2.6.23. On our custom board, The performance is
patches.
Any way I can reproduce your test setup ?
swami
From: Frank Xue [EMAIL PROTECTED]
Sent: Wednesday, May 28, 2008 8:24 AM
To: Ashuaria Lee
Cc: Subbrathnam, Swaminathan; davinci-linux-open-source
Subject: Re: USB CPPI DMA patch
your test setup ?
swami
From: Frank Xue [EMAIL PROTECTED]
Sent: Wednesday, May 28, 2008 8:24 AM
To: Ashuaria Lee
Cc: Subbrathnam, Swaminathan; davinci-linux-open-source
Subject: Re: USB CPPI DMA patch for DaVinci
Lee, Swami,
I did a simple and quick test
Lee, Swami,
I did a simple and quick test. The kernel was also configured with
default setting.
It seems this patch fixed USB stability issue.
test case:
~ 20 files, about 100MBytes every file.
Speed benchmark result on git 2.6.25
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