Re: SiI3112 DMA? (2.6.0-test6)

Hugo Mills
2003-10-05T17:07:24Z

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On Sun, Oct 05, 2003 at 11:50:29AM +0200, Jurgen Kramer wrote:
> I am currently running 2.6.0-test6 on an old PII which has a SiI3112
> SATA PCI card in one of its PCI slots. It seems that the SiI3112 is not
> using DMA so now it is even running slower then the onboard PIIX4 IDE
> controller.
>
> Is DMA supported on the Si3112? DMA is not being enabled by the SiI3112
> card's BIOS (this is a cheap PCI card):
>
> SiI3112 Serial ATA: IDE controller at PCI slot 0000:00:0b.0
> SiI3112 Serial ATA: chipset revision 2
> SiI3112 Serial ATA: 100% native mode on irq 11
> ide2: MMIO-DMA at 0xd8807000-0xd8807007, BIOS settings: hde:pio,
> hdf:pio
> ide3: MMIO-DMA at 0xd8807008-0xd880700f, BIOS settings: hdg:pio,
> hdh:pio
> hde: ST3120026AS, ATA DISK drive
> ide2 at 0xd8807080-0xd8807087,0xd880708a on irq 11

I get this, too, on 2.4.22-ac2, and I've had someone else tell me
about the same issue with their card (don't know what kernel he's
running).

This is on the SIIG 2-channel PCI card (SA-SIG212). If I copy
anything large (a couple of hundred megabytes of data) to the disk,
then the data rate to the disk drops slowly (on what appears to be an
exponential decay), and then drops to zero for about 7-10 seconds,
followed by a complete system lock-up for 1-2 seconds when the
transfer rate goes through the roof, followed by another 7-10 seconds
of no transfer and another lock-up, and so on. (I'm using gkrellm to
get this data throughput information).

Filesystem is ReiserFS, FWIW. More details below.

Hugo.

From dmesg:

[snip]
Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
SiI3112 Serial ATA: IDE controller at PCI slot 00:0d.0
PCI: Found IRQ 12 for device 00:0d.0
PCI: Sharing IRQ 12 with 00:09.0
SiI3112 Serial ATA: chipset revision 1
SiI3112 Serial ATA: not 100% native mode: will probe irqs later
ide0: MMIO-DMA , BIOS settings: hda:pio, hdb:pio
ide1: MMIO-DMA , BIOS settings: hdc:pio, hdd:pio
ALI15X3: IDE controller at PCI slot 00:0f.0
ALI15X3: chipset revision 193
ALI15X3: not 100% native mode: will probe irqs later
ide2: BM-DMA at 0x9000-0x9007, BIOS settings: hde:DMA, hdf:pio
ide3: BM-DMA at 0x9008-0x900f, BIOS settings: hdg:pio, hdh:pio
hda: ST3120026AS, ATA DISK drive
blk: queue c0325d60, I/O limit 4095Mb (mask 0xffffffff)
[snip]

vlad:~# cat /proc/ide/siimage

Controller: 0
SiI3112 Chipset.
MMIO Base 0xd5800000
MMIO-DMA Base 0xd5800000
MMIO-DMA Base 0xd5800008

vlad:~# hdparm /dev/ide/host0/bus0/target0/lun0/disc

/dev/ide/host0/bus0/target0/lun0/disc:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 1 (on)
readonly = 0 (off)
readahead = 8 (on)
geometry = 14593/255/63, sectors = 234441648, start = 0

(This was after hdparm -X70 -d1 -c1 -K1)

vlad:~# hdparm -I /dev/ide/host0/bus0/target0/lun0/disc

/dev/ide/host0/bus0/target0/lun0/disc:

ATA device, with non-removable media
Model Number: ST3120026AS
Serial Number: 3JT059GT
Firmware Revision: 3.05
Standards:
Used: ATA/ATAPI-6 T13 1410D revision 2
Supported: 6 5 4 3
Configuration:
Logical max current
cylinders 16383 65535
heads 16 1
sectors/track 63 63
--
CHS current addressable sectors: 4128705
LBA user addressable sectors: 234441648
LBA48 user addressable sectors: 234441648
device size with M = 1024*1024: 114473 MBytes
device size with M = 1000*1000: 120034 MBytes (120 GB)
Capabilities:
LBA, IORDY(can be disabled)
bytes avail on r/w long: 4 Queue depth: 1
Standby timer values: spec'd by Standard
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 254, current value: 0
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=240ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
Security Mode feature set
* SMART feature set
* FLUSH CACHE EXT command
* Mandatory FLUSH CACHE command
* Device Configuration Overlay feature set
* 48-bit Address feature set
SET MAX security extension
* DOWNLOAD MICROCODE cmd
* SMART self-test
* SMART error logging
Security:
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
Checksum: correct

vlad:~# hdparm -i /dev/ide/host0/bus0/target0/lun0/disc

/dev/ide/host0/bus0/target0/lun0/disc:

Model=ST3120026AS, FwRev=3.05, SerialNo=3JT059GT
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=234441648
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 2:

* signifies the current active mode

--
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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