HPT374 RAID bus controller SATA, only UDMA 33

HPT374 RAID bus controller SATA, only UDMA 33

[Lukas Postupa]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="us-ascii", Size: 1638 bytes --]

Hi,

my SAMSUNG 250GB drive connected to HPT374 RAID bus controller (SATA) is
only working at UDMA 33.

I am using
HPT36X/37X chipset support (*).

And here is what dmesg says:

ide5: BM-DMA at 0xc008-0xc00f, BIOS settings: hdk:DMA, hdl:pio
hdk: SAMSUNG SP2504C, ATA DISK drive
hdk: max request size: 1024KiB
hdk: 488397168 sectors (250059 MB) w/8192KiB Cache, CHS=30401/255/63,
UDMA(33)
hdk: cache flushes supported
 hdk:

lspci:

02:05.0 RAID bus controller: Triones Technologies, Inc. HPT374 (rev 07)
Subsystem: Triones Technologies, Inc.: Unknown device 0001
Flags: bus master, 66Mhz, medium devsel, latency 120, IRQ 17
I/O ports at 9c00 [size=8]
I/O ports at a000 [size=4]
I/O ports at a400 [size=8]
I/O ports at a800 [size=4]
I/O ports at ac00 [size=256]
Expansion ROM at e0020000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2

02:05.1 RAID bus controller: Triones Technologies, Inc. HPT374 (rev 07)
Subsystem: Triones Technologies, Inc.: Unknown device 0001
Flags: bus master, 66Mhz, medium devsel, latency 120, IRQ 17
I/O ports at b000 [size=8]
I/O ports at b400 [size=4]
I/O ports at b800 [size=8]
I/O ports at bc00 [size=4]
I/O ports at c000 [size=256]
Capabilities: [60] Power Management version 2


Trying to set UDMA 3-5 directly doesn't work:

dmesg:

hdk: Speed warnings UDMA 3/4/5 is not functional.


hdparm -t /dev/hdk

/dev/hdk:
 Timing buffered disk reads:   42 MB in  3.06 seconds =  13.74 MB/sec

Does anyone have a solution to fix this bottleneck?

regards,

Lukas

-- 
10 GB Mailbox, 100 FreeSMS/Monat http://www.gmx.net/de/go/topmail
+++ GMX - die erste Adresse für Mail, Message, More +++

Re: HPT374 RAID bus controller SATA, only UDMA 33

[Alan Cox]

On Iau, 2005-12-15 at 02:33 +0100, Lukas Postupa wrote:
> Hi,
> 
> my SAMSUNG 250GB drive connected to HPT374 RAID bus controller (SATA) is
> only working at UDMA 33.

The HPT37x driver in the old IDE code assumes cable detection support.
If someone uses a SATA bridge that gets this wrong then you don't get
over 33Mhz.

> Does anyone have a solution to fix this bottleneck?

Force ata66 support on. See Documentation/ide.txt

Re: HPT374 RAID bus controller SATA, only UDMA 33

[Lukas Postupa]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="us-ascii", Size: 1020 bytes --]

On Thu, 15 Dec 2005 12:31:55 +0000, Alan Cox wrote:


> > my SAMSUNG 250GB drive connected to HPT374 RAID bus > > controller
(SATA) is only working at UDMA 33.
> 
> 
> Force ata66 support on. See Documentation/ide.txt
> 

I tried to force ata66 but this doesn't work.
Drive still remains at UDMA 33.

But setting CONFIG_IDEDMA_PCI_AUTO to [ n ] (kernel 2.6.14.4) skips UDMA 33
detection and leads to this output:

hdk: 488397168 sectors (250059 MB) w/8192KiB Cache, CHS=30401/255/63 /*
before:  ,UDMA(33) */

Then after booting:

$hdparm -d 1 /dev/hdk

/dev/hdk:
 setting using_dma to 1 (on)
 using_dma    =  1 (on)

$hdparm -t /dev/hdk

/dev/hdk:
 Timing buffered disk reads:  162 MB in  3.02 seconds =  53.71 MB/sec

now this looks much better :)

By the way: Is there a trick setting DMA without CONFIG_IDEDMA_PCI_AUTO = [
y ] at boot time independent from init scripts?

regards,

Lukas

-- 
DSL-Aktion wegen großer Nachfrage bis 28.2.2006 verlängert:
GMX DSL-Flatrate 1 Jahr kostenlos* http://www.gmx.net/de/go/dsl