AW: [PATCH]: [MPC5200] Add ATA DMA support

[Lehmann, Hans (Ritter Elektronik)]

We take a vanilla kernel with rt11 patches from Ingo Mollnar.

Here are the section of my boot messages

ata: MPC52xx IDE/ATA libata driver
scsi0 : mpc52xx_ata
ata1: PATA max UDMA/33 ata_regs 0xf0003a00 irq 135
ata1.00: ATA-0: ELITE PRO CF CARD 1GB, 20070131, max MWDMA2
ata1.00: 2031120 sectors, multi 0: LBA
ata1.00: configured for MWDMA2
ata1.00: configured for MWDMA2
ata1: EH complete
scsi 0:0:0:0: Direct-Access     ATA      ELITE PRO CF CAR 2007 PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 2031120 512-byte hardware sectors (1040 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 0:0:0:0: [sda] 2031120 512-byte hardware sectors (1040 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
 sda: sda1 

Greetings

Mit freundlichen Grüßen

Hans Lehmann
Softwareentwicklung

Telefon	+49 (0)2191-67-2520
Fax 	+49 (0)2191-67-703408
e-mail 	hans.lehmann at ritter-elektronik.de



Ritter Elektronik GmbH
Leverkuser Straße 65
D-42897 Remscheid
www.ritter-elektronik.de

Geschäftsführer: Manfred A. Wagner, Dr. Uwe Baader
Sitz der Gesellschaft: Oberhausen
HRB 17168 Duisburg  /  USt-ID DE 814009849


-----Ursprüngliche Nachricht-----
Von: Matt Sealey [mailto:neko at genesi-usa.com] Im Auftrag von Matt Sealey
Gesendet: Dienstag, 11. November 2008 15:36
An: Lehmann, Hans (Ritter Elektronik)
Cc: Tim Yamin; Grant Likely; linuxppc-dev at ozlabs.org
Betreff: Re: [PATCH]: [MPC5200] Add ATA DMA support

Oddly I built 2.6.27.2 with the patch and the Efika "waited" for a disk to appear and didn't get anywhere. If I set libata.dma=0 then it complained about missing symbols (but not with it enabled!).

This was a clean SUSE kernel from Factory, with only the ATA patch applied with a few hand-merges (pata_mpc52xx.c has had a line of whitespace removed at some point, but otherwise identical).

Lehmann, Hans (Ritter Elektronik) wrote:
> Tim, Grant,
> 
> I have tested the patch on our MPC5200B based board with Kingston Elite Pro CF-card and it worked fine with DMA2. I have port the patch back to 2.6.24.7 Kernel and I can't detect problems our errors, even with big files (40 mB) over FEC wich I save to card . We get performance up to 10,5mB/s which is near to the max. speed.
> 
> Greetings
> 
> 
> 
> 
> Mit freundlichen Grüßen
> 
> Hans Lehmann
> Softwareentwicklung
> 
> Telefon	+49 (0)2191-67-2520
> Fax 	+49 (0)2191-67-703408
> e-mail 	hans.lehmann at ritter-elektronik.de
> 
> 
> 
> Ritter Elektronik GmbH
> Leverkuser Straße 65
> D-42897 Remscheid
> www.ritter-elektronik.de
> 
> Geschäftsführer: Manfred A. Wagner, Dr. Uwe Baader Sitz der 
> Gesellschaft: Oberhausen HRB 17168 Duisburg  /  USt-ID DE 814009849
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: linuxppc-dev-bounces+hans.lehmann=ritter-elektronik.de at ozlabs.org 
> [mailto:linuxppc-dev-bounces+hans.lehmann=ritter-elektronik.de at ozlabs.
> org] Im Auftrag von Tim Yamin
> Gesendet: Mittwoch, 13. August 2008 11:07
> An: Grant Likely
> Cc: linuxppc-dev at ozlabs.org
> Betreff: [WW Spam: medium] Re: [PATCH]: [MPC5200] Add ATA DMA support
> 
> On Wed, Aug 13, 2008 at 7:11 AM, Grant Likely <grant.likely at secretlab.ca> wrote:
>> Sounds good to me.  You will get more testers that way.  I can pick 
>> it up for -next if everything else looks good.
> 
> Here are the new patches; tested against 2.6.27-rc3.
> 
> Thanks,
> 
> Tim
> 
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev at ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev

--
Matt Sealey <matt at genesi-usa.com>
Genesi, Manager, Developer Relations