New ultra-fast SDHC driver/module - ported to DD-WRT

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aszu
DD-WRT Novice


Joined: 14 Oct 2009
Posts: 4

PostPosted: Wed Oct 14, 2009 14:25    Post subject: New ultra-fast SDHC driver/module - ported to DD-WRT Reply with quote
Hi!

Recently I have been playing with my WRT54G v3.1 and SD mod. Then I read about improved SDHC driver for Tomato: http://gemini.net.pl/~slodki/tomato-sdhc.html

It would be nice to have such a thing on DD-WRT, isn't it?

Well, good news! I was quite bored today and compiled this module for DD-WRT v24-SP2. I am not a programmer and have never done it before, so it was really painful process. Also, I had to modify the source a bit.

It might work on the other DD-WRT versions, but I cannot guarantee this.

Results?

1. MASSIVE speed improvement (from roughly 150KB/s to almost 500KB/s on my 1GB Sandisk MicroSD)
2. Possible SDHC support (haven't test it yet, but it looks promising)

For some reason passing GPIO parameters to module during the initialization doesn't work, so I prepared two versions (for GPIO 2 or 5 as a DI).

Please feel free to test:

http://niuki.net/sdhc-gpio2.o
http://niuki.net/sdhc-gpio5.o

(I made only a three or so small modification to the source, but I will post it soon nevertheless)

Quick instruction:

1. Make sure that an old mmc module is not loaded. You can check it using lsmod. Run 'umount /mmc' & 'rmmod mmc' if it is).

2. Download the new module:

Code:

cd /tmp
wget http://niuki.net/sdhc-gpio2.o (or gpio5 version)


3. Load new module:

Code:
insmod /tmp/sdhc-gpio2.o


or

Code:
insmod /tmp/sdhc-gpio5.o


4. Mount SD card:

Code:
mount /dev/mmc/part1 /mmc/


Voila! ;)

Enjoy blazing speed and SHDC support (hopefully;)

Kudos for the original creators of this module (Chris Krusch, Augusto Bott and others involved).


Last edited by aszu on Wed Oct 14, 2009 15:28; edited 1 time in total
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MrAlvin
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Joined: 07 Jan 2007
Posts: 453
Location: Denmark

PostPosted: Wed Oct 14, 2009 15:21    Post subject: Re: New ultra-fast SDHC driver/module - ported to DD-WRT Reply with quote
aszu wrote:
cd /tmp
http://niuki.net/sdhc-gpio2.o (or gpio5 version)

Think it should read:

cd /tmp
wget http://niuki.net/sdhc-gpio2.o
aszu
DD-WRT Novice


Joined: 14 Oct 2009
Posts: 4

PostPosted: Wed Oct 14, 2009 15:30    Post subject: Re: New ultra-fast SDHC driver/module - ported to DD-WRT Reply with quote
MrAlvin wrote:
aszu wrote:
cd /tmp
http://niuki.net/sdhc-gpio2.o (or gpio5 version)

Think it should read:

cd /tmp
wget http://niuki.net/sdhc-gpio2.o


Thanks, corrected! Smile
ramon.godoy
DD-WRT Novice


Joined: 15 Aug 2009
Posts: 25
Location: Brazil

PostPosted: Wed Oct 14, 2009 15:51    Post subject: Reply with quote
nice!

im having a hard time with my mod.

ill try your module as soon as possible.
phuzi0n
DD-WRT Guru


Joined: 10 Oct 2006
Posts: 10143

PostPosted: Wed Oct 14, 2009 22:13    Post subject: Reply with quote
Wow, those performance numbers say the driver can write faster than it can read. Laughing Laughing
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aszu
DD-WRT Novice


Joined: 14 Oct 2009
Posts: 4

PostPosted: Thu Oct 15, 2009 4:26    Post subject: Reply with quote
phuzi0n wrote:
Wow, those performance numbers say the driver can write faster than it can read. Laughing Laughing


This seems to be true ;)

I ran some benchmark (1GB Sandisk MicroSD):

Code:
root@my-ap:~#  sync; date; dd if=/dev/zero of=/mmc/test.bin bs=1024 count=102400; sync; date
Thu Oct 15 06:02:55 UTC 2009
102400+0 records in
102400+0 records out
Thu Oct 15 06:05:19 UTC 2009


This is whooping 711KB/s write speed!! :D

Code:
root@my-ap:~#  sync; date; dd if=/mmc/test.bin of=/dev/null bs=1024 count=102400; sync; date
Thu Oct 15 06:11:46 UTC 2009
102400+0 records in
102400+0 records out
Thu Oct 15 06:15:55 UTC 2009

Read speed is 'only' 411KB/s ;)

I am completely amazed by this driver - it brings usability of SD-mod to the completely new level (i.e. setting up swap space on SD now makes much more sense). Also, it is rock-stable for me. And please remember it should support SDHC!Wink
Masterman
DD-WRT Guru


Joined: 24 Aug 2009
Posts: 2071
Location: South Florida

PostPosted: Thu Oct 15, 2009 7:09    Post subject: Reply with quote
This should be in the Wiki! Cool....Does it work with External HDD's?
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autobot
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PostPosted: Thu Oct 15, 2009 7:16    Post subject: Reply with quote
Masterman wrote:
This should be in the Wiki! Cool....Does it work with External HDD's?


This is for the mmc mod, nothing to do with usb. Wink

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Masterman
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Joined: 24 Aug 2009
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PostPosted: Thu Oct 15, 2009 7:19    Post subject: Reply with quote
autobot wrote:
Masterman wrote:
This should be in the Wiki! Cool....Does it work with External HDD's?


This is for the mmc mod, nothing to do with usb. Wink


Dammit Mad lol...Guess I'm stuck with 10MByte/sec transfer speeds... Smile

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autobot
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PostPosted: Thu Oct 15, 2009 7:23    Post subject: Reply with quote
Masterman wrote:
autobot wrote:
Masterman wrote:
This should be in the Wiki! Cool....Does it work with External HDD's?


This is for the mmc mod, nothing to do with usb. Wink


Dammit Mad lol...Guess I'm stuck with 10MByte/sec transfer speeds... Smile


Yes *stuck* lol.

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Masterman
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PostPosted: Thu Oct 15, 2009 7:31    Post subject: Reply with quote
autobot wrote:
Masterman wrote:
autobot wrote:
Masterman wrote:
This should be in the Wiki! Cool....Does it work with External HDD's?


This is for the mmc mod, nothing to do with usb. Wink


Dammit Mad lol...Guess I'm stuck with 10MByte/sec transfer speeds... Smile


Yes *stuck* lol.



Hehe..Now I'm wonderin about the Asus RT-N16 with 128MB of DDR2 RAM and a driver like this.. Very Happy

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aszu
DD-WRT Novice


Joined: 14 Oct 2009
Posts: 4

PostPosted: Sun Oct 18, 2009 9:55    Post subject: Reply with quote
Yes! It works! Very Happy

Finally I have got Transcend 8GB class 6 SDHC MicroSD card. I just swapped it with exising 1GB cart and after reloading module it worked straight away (however, it took ages to format this card)!

Code:
root@my-ap:~# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 2.6M      2.6M         0 100% /
/dev/mmc/part1            7.9G       49M      7.5G   1% /mmc
/dev/mmc/part1            7.9G       49M      7.5G   1% /jffs
/dev/mmc/part1            7.9G       49M      7.5G   1% /opt


The performance (write/read speed) is almost the same as on the non-SDHC card. Still, I am very very happy with this driver Smile
redhawk0
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Joined: 04 Jan 2007
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PostPosted: Sun Oct 18, 2009 17:38    Post subject: Reply with quote
I asked BrainSlayer to view this thread this morning....it appears that he is going to incorprate the SDHC driver into the build.

http://svn.dd-wrt.com:8000/dd-wrt/changeset/13105

redhawk

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DHC_DarkShadow
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PostPosted: Sun Oct 18, 2009 22:05    Post subject: Reply with quote
redhawk0 wrote:
I asked BrainSlayer to view this thread this morning....it appears that he is going to incorprate the SDHC driver into the build.

http://svn.dd-wrt.com:8000/dd-wrt/changeset/13105

redhawk


YEA!!!!!!! Laughing

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abarrow
DD-WRT Novice


Joined: 29 Jan 2009
Posts: 20
Location: Currently Mexico

PostPosted: Tue Nov 10, 2009 13:07    Post subject: Release? Reply with quote
Anyone know when the next release is going to be? It's been a month since the last one.

I would really like to be able to use this module!
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