Re: 答复: 答复: [Gnewsense-dev] Re: gN ewSense-MIPS and SiliconMotion video driver

[Octavio Rossell]

WOW!!!

This are very good news. Thanks, Wu !!

What is needed to to have a new driver adding this proposals (besides of
patching it)?

Wu Zhangjin escribió:
> Shiwei have found, with this patch, the performance is increaced very
> obviously:
> 
> -----------------
> 
> address@hidden:~$ mplayer -benchmark -nosound -vo xv Flack.avi
> no loongson2f patch:
> BENCHMARKs: VC: 132.980s VO: 121.602s A:   0.000s Sys:  12.882s
> =  267.465s
> BENCHMARK%: VC: 49.7188% VO: 45.4648% A:  0.0000% Sys:  4.8164% =
> 100.0000%
> loongson2f patch:
> BENCHMARKs: VC: 128.548s VO:  42.528s A:   0.000s Sys:   5.600s
> =  176.676s
> BENCHMARK%: VC: 72.7592% VO: 24.0712% A:  0.0000% Sys:  3.1697% =
> 100.0000%
> 
> --------------------
> 
> from: http://www.bjlx.org.cn/node/753
> 
> The tested patches for Xorg and silicon motion driver were also put on
> the above web page.
> 
> Regards,
>       Wu Zhangjin
> 
> On Mon, 2010-03-08 at 00:45 -0430, Octavio Rossell wrote:
>> Teddy, in this list:
>>
>> http://groups.google.com/group/loongson-dev/browse_thread/thread/570549e3d7894fef/07ba7be1fd1b15c8
>>
>> there was a proposed patch to the current version:
>>
>> http://loongson-dev.googlegroups.com/attach/c8ccd2a1370f5927/xf86-video-siliconmotion-1.7.3-fix-loongson.patch
>>
>> It is possible to study this to add the proposed changes into the
>> oficial driver?
>>
>> Teddy Wang escribió:
>>>     Now our new SM502 and SM712 driver can support latest XServer. But the
>>> new SM712 driver doesn't test in the loongson platform.  The new SM502
>>> Xserver driver you used in the AIO platform also can support latest Xserver.
>>>
>>> -----邮件原件-----
>>> 发件人: zhangfx [mailto:address@hidden 
>>> 发送时间: 2010年3月5日 8:55
>>> 收件人: Teddy Wang
>>> 抄送: 'yanhua'; 'Daniel Clark'; 'chenj'; '崔春波'; address@hidden;
>>> 'Bernie Innocenti'
>>> 主题: Re: 答复: [Gnewsense-dev] Re: gNewSense-MIPS and SiliconMotion video
>>> driver
>>>
>>> It seems that people are complaining that the performance is much worse 
>>> than current one.
>>>
>>> Teddy Wang wrote:
>>>> Hi, yanhua,
>>>>
>>>>  Now the Siliconmotion driver in freedesktop port can support higher X
>>>> server. It can support SM712 and SM502. You can refer to
>>>> http://cgit.freedesktop.org/xorg/driver/xf86-video-siliconmotion/
>>>>  
>>>>
>>>> Best Regards,
>>>> Teddy Wang 王力强
>>>> Silicon Motion, Inc. (China)
>>>> Tel: 86 21 65107780 ext.7162
>>>> Mobile: 86 13817794114
>>>> -----邮件原件-----
>>>> 发件人: yanhua [mailto:address@hidden 
>>>> 发送时间: 2010年3月4日 17:30
>>>> 收件人: Daniel Clark; Teddy Wang; chenj; 崔春波
>>>> 抄送: address@hidden; Bernie Innocenti; zhangfx
>>>> 主题: Re: [Gnewsense-dev] Re: gNewSense-MIPS and SiliconMotion video
>>> driver
>>>> We only test yeeloong siliconmotion driver for sm712 in x server 1.4.2. 
>>>> some work is  needed to  make higher x server work properly.
>>>>
>>>> High Teddy:
>>>>      We need to port siliconmotion  x driver to higher x server, the 
>>>> best is the newest x server.  Could you please help to do this work?
>>>>
>>>> Daniel Clark 写道:
>>>>   
>>>>> On 02/28/2010 11:24 PM, Octavio Rossell wrote:
>>>>>     
>>>>>> We need to recompile the Silicon Motion Driver into the gNewSense Lemote
>>>>>> Yeelong. There is an existing effort in this [1] but the package appears
>>>>>> to crash or to not work properly in some reeboot situation.
>>>>>>       
>>>>> There are actually several projects / hacks to get X working better in 
>>>>> various ways on the yeeloong. I believe all of them suffer from 
>>>>> various problems, and most are dead ends (code that would never be 
>>>>> accepted against upstream and/or against really old versions of X).
>>>>>
>>>>> Bernie has a pretty comprehensive overview of the situation as it was 
>>>>> a month or two ago posted somewhere; I'll try to gather all the 
>>>>> mailing list posts about and put summaries/references to them on a 
>>>>> wiki page somewhere if you tell me you would find that to be useful.
>>>>>
>>>>> The most recent effort I've seen has code (patch file) and discussion 
>>>>> here:
>>>>>
>>>>>
>>>>>     
>>> http://groups.google.com/group/loongson-dev/browse_thread/thread/570549e3d78
>>>> 94fef/07ba7be1fd1b15c8?lnk=gst&q=x11#07ba7be1fd1b15c8 
>>>>   
>>>>> Or here if that URL is broken:
>>>>>
>>>>> http://ur1.ca/obkd
>>>>>
>>>>>     
>>>>>> Any help, advice or information will be helpful.
>>>>>>       
>>>>> Advice:
>>>>>
>>>>> (a) Check mailing list archives, monitor and keep up to date at least 
>>>>> this mailing list, loongson-dev, #gnewsense-dev irc. Email 
>>>>> address@hidden and ask for access to address@hidden and its archives.
>>>>>
>>>>> (b) Get on the proper xorg lists / channels.
>>>>>
>>>>> (c) If you don't have commit access to xorg version control, be sure 
>>>>> to form a relationship with someone who does, and is willing to help 
>>>>> you get your changes in. Ditto for the upstream Debian packages, 
>>>>> unless you have resources to maintain seperate gNS-specific packages 
>>>>> until the end of time, and kk is cool with that.
>>>>>
>>>>> (d) Make sure any development happens in a publicly available version 
>>>>> control repository. Tell at least this list and loongson-dev where 
>>>>> that is once anything at all useful is there.
>>>>>
>>>>> (e) Keep in mind that the goal is to be included in upstream xorg; 
>>>>> avoid quick hacks that will never be accepted upstream.
>>>>>
>>>>> (f) If the people working on this on your end are not good at English, 
>>>>> see if you can get someone who is to translate the available doc / 
>>>>> list threads to them and vice versa.
>>>>>
>>>>> (g) You may also want to follow Zhang Le's Gentoo work, it seems to be 
>>>>> the most advanced loongson2f-optimized GNU/Linux distribution at the 
>>>>> moment (i.e. it's actually all compiled with proper mipsel abi, 
>>>>> loongson2f optimization, loongson2f bug workarounds). Also 
>>>>> collaborating with people working on OpenBSD/Loongson may be useful; 
>>>>> we may disagree politically at times, but we use the same upstream 
>>>>> xorg code.
>>>>>
>>>>> (h) You are probably more likely to get technical help regarding the 
>>>>> work on loongson-dev or xorg lists.
>>>>>
>>>>> (i) Some low level info on the SM hardware is at 
>>>>> http://groups.google.com/group/loongson-dev/files
>>>>>
>>>>> (j) If you need to speed up compiles bug me on #gnewsense-dev - I'm 
>>>>> close to having an icecc setup done, and should have 10 more 2f boxes 
>>>>> to add to the existing 4 in the farm Monday.
>>>>>
>>>>> Happy Hacking,
>>>>>     
>>>>   
>> _______________________________________________
>> gNewSense-dev mailing list
>> address@hidden
>> http://lists.nongnu.org/mailman/listinfo/gnewsense-dev
> 
> 
> 

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