[nmglug] SiI PIR133

[Mik]

Well, this looks like one of those problems that other people had but
nobody put down a solution, just the problem.  In this link:

http://www.ussg.iu.edu/hypermail/linux/kernel/0303.3/0179.html

Even Alan Cox replies.  The poster's original message has dmesg output
like yours.  Even down to the:

 ide2: MMIO-DMA at 0xd4800000-0xd4800007, BIOS settings: hde:pio,
hdf:pio
> ide3: MMIO-DMA at 0xd4800008-0xd480000f, BIOS settings: hdg:pio,
hdh:pio
> hda: WDC 

I think someone asked about DMA being turned on.  Even in pio4 you
should be able to get 10 MB/sec with a single drive.  To me it sounds
like whatever it does to make sure it writes the data to both disks
takes a long time.  If it was very efficient, it would write to both
drives simultaneously.  If it wrote to one and then the other, that
would take twice as long.  If it writes it and then reads it to make
sure the write worked, it could get quite slow.  

I was hoping to find more information about how it actually works. 
Doesn't look easy to find explanations about.  Good Luck.

This is in reply to:

Message: 1
Date: Thu, 26 May 2005 17:57:45 -0700 (PDT)
From: Tim Emerick <timothyemerick at yahoo.com>
Subject: Re: [nmglug] What is the model number of the SiL card?
To: "NMGLUG.org mailing list" <nmglug at nmglug.org>
Message-ID: <20050527005745.78456.qmail at web40911.mail.yahoo.com>
Content-Type: text/plain; charset=us-ascii

Here is the web page for the actual card:

http://www.koutech.com/proddetail.asp?linenumber=105

Here's some dmesg stuff:

SiI680: IDE controller at PCI slot 0000:02:03.0
ACPI: PCI interrupt 0000:02:03.0[A] -> GSI 11 (level, low) -> IRQ 11
SiI680: chipset revision 2
SiI680: BASE CLOCK == 133
SiI680: 100% native mode on irq 11
    ide2: MMIO-DMA , BIOS settings: hde:pio, hdf:pio
    ide3: MMIO-DMA , BIOS settings: hdg:pio, hdh:pio
hde: WDC WD800BB-00CCB0, ATA DISK drive
ide2 at 0xd08b1080-0xd08b1087,0xd08b108a on irq 11
hde: max request size: 64KiB
hde: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=65535/16/63,
UDMA(100)
 /dev/ide/host2/bus0/target0/lun0: p1
hdg: WDC WD800BB-00CCB0, ATA DISK drive
ide3 at 0xd08b10c0-0xd08b10c7,0xd08b10ca on irq 11
hdg: max request size: 64KiB
hdg: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=65535/16/63,
UDMA(100)
 /dev/ide/host2/bus1/target0/lun0: p1
PDC20265: IDE controller at PCI slot 0000:02:06.0
ACPI: PCI interrupt 0000:02:06.0[A] -> GSI 10 (level, low) -> IRQ 10
PDC20265: chipset revision 2
PDC20265: 100% native mode on irq 10
PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
    ide4: BM-DMA at 0xcc00-0xcc07, BIOS settings: hdi:pio, hdj:pio
    ide5: BM-DMA at 0xcc08-0xcc0f, BIOS settings: hdk:pio, hdl:pio


Tim


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