Hi!
Since 2.6.21 I have a problem with the it821x driver on my ITE 8212
controller.
Now I saw some updates to it821x in 2.6.22-rc1 and gave that a try, but
the problem persists.
It seems that DMA is broken on it8212 somehow since the merge of
the it8213 driver.
dmesg shows some BUG DMA OFF:
-----------------8<-----------------
IT8212: IDE controller at PCI slot 0000:00:09.0
ACPI: PCI Interrupt 0000:00:09.0[A] -> GSI 17 (level, low) -> IRQ 18
IT8212: chipset revision 17
it821x: controller in smart mode.
IT8212: 100% native mode on irq 18
ide2: BM-DMA at 0xdc00-0xdc07, BIOS settings: hde:pio, hdf:pio
ide3: BM-DMA at 0xdc08-0xdc0f, BIOS settings: hdg:pio, hdh:pio
Probing IDE interface ide2...
hde: SAMSUNG SP2514N, ATA DISK drive
hdf: Maxtor 6Y120L0, ATA DISK drive
hde: selected mode 0x45
hdf: selected mode 0x46
hde: Performing identify fixups.
hdf: Performing identify fixups.
ide2 at 0xec00-0xec07,0xe802 on irq 18
hde: max request size: 128KiB
hde: 488397168 sectors (250059 MB) w/8192KiB Cache, CHS=30401/255/63,
BUG DMA OFF
hde:hde: recal_intr: status=0x51 { DriveReady SeekComplete Error }
hde:recal_intr: error=0x04 { DriveStatusError }
ide: failed opcode was: unknown hde1
hdf: max request size: 128KiB
hdf: 240121728 sectors (122942 MB) w/2048KiB Cache, CHS=65535/16/63,
BUG DMA OFF
hdf:hdf: recal_intr: status=0x51 { DriveReady SeekComplete Error }
hdf:recal_intr: error=0x04 { DriveStatusError }
ide: failed opcode was: unknown hdf1
------------------------>8-----------------------
Until 2.6.20 (since 2.6.10) the driver worked quite fine, but since
2.6.21 moving/copying files from/to any drive on the controller is
a) really slow,
b) music starts skipping,
c) mouse stopps moving for short periods,
and hdparm does not work anymore:
# hdparm -d1 /dev/hde
/dev/hde:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Input/output error
using_dma = 0 (off)
This has not been a problem before. hdparm -tT showed something around
40MB/s for buffered reads, now it looks like this:
# hdparm -tT /dev/hde
/dev/hde:
Timing cached reads: 356 MB in 2.01 seconds = 177.30 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Input/output
error
Timing buffered disk reads: 10 MB in 3.28 seconds = 3.05 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Input/output
error
more: http://phpfi.com/234217
If there is more info needed, please tell me what. And please CC as I
am not subscribed.
Thanks,
Thomas
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