Messages in this thread | | | Date | Tue, 15 May 2007 12:53:08 +0200 | From | Thomas Kuther <> | Subject | IT821x: no DMA since 2.6.21 |
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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 [unhandled content-type:application/pgp-signature] | |