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SubjectRe: PATCH: 2.6.10 - IT8212 IDE
Alan,

This patch works here but the performance is very poor. When i set DMA
and 32bit I/O thru hdparm, performance is comparable to the ITE pseudo
SCSI driver.

I get some errors on dmesg when using hdparm:

IT8212: IDE controller at PCI slot 0000:01:0c.0
ACPI: PCI Interrupt Link [APC2] enabled at IRQ 17
ACPI: PCI interrupt 0000:01:0c.0[A] -> GSI 17 (level, high) -> IRQ 17
IT8212: chipset revision 16
IT8212: 100% native mode on irq 17
ide2: BM-DMA at 0x9800-0x9807, BIOS settings: hde:DMA, hdf:pio
it8212: controller in smart mode.
ide3: BM-DMA at 0x9808-0x980f, BIOS settings: hdg:pio, hdh:pio
Probing IDE interface ide2...
hde: Integrated Technology Express Inc, ATA DISK drive
hde: IT8212 RAID 0 volume(64K stripe).
ide2 at 0x8810-0x8817,0x8c02 on irq 17
Probing IDE interface ide3...
Probing IDE interface ide3...
Probing IDE interface ide4...
ide4: Wait for ready failed before probe !
Probing IDE interface ide5...
ide5: Wait for ready failed before probe !
hde: max request size: 128KiB
hde: 468883200 sectors (240068 MB), CHS=29186/255/63
hde: cache flushes not supported
hde: hde1

XFS mounting filesystem hde1
Ending clean XFS mount for filesystem: hde1
hde: task_in_intr: status=0xd0 { Busy }

ide: failed opcode was: unknown
ide2: reset: master: error (0x00?)

hdparm
/dev/hde:
Timing cached reads: 2012 MB in 2.00 seconds = 1005.65 MB/sec
Timing buffered disk reads: 6 MB in 3.32 seconds = 1.81 MB/sec

hdparm -c1 -d1 -k1
/dev/hde:
setting 32-bit IO_support flag to 1
setting using_dma to 1 (on)
setting keep_settings to 1 (on)
IO_support = 1 (32-bit)
using_dma = 1 (on)
keepsettings = 1 (on)
/dev/hde:
Timing cached reads: 2028 MB in 2.00 seconds = 1013.14 MB/sec
Timing buffered disk reads: 150 MB in 3.01 seconds = 49.84 MB/sec

Regards,

Paul B.

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