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SubjectRe: [RFT] major libata update
Tejun Heo wrote:
> On Thu, May 18, 2006 at 04:07:58PM -0700, Andrew Morton wrote:
>> Yes it does. I dropped it and got
>>
>> SCSI subsystem initialized
>> ata_piix 0000:00:1f.2: MAP [ P0 P2 P1 P3 ]
>> ACPI (acpi_bus-0191): Device is not power manageable [20060310]
>> ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 19 (level, low) -> IRQ 19
>> ata1: SATA max UDMA/133 cmd 0x2148 ctl 0x217E bmdma 0x2110 irq 19
>> ata2: SATA max UDMA/133 cmd 0x2140 ctl 0x217A bmdma 0x2118 irq 19
>> ata1: SATA port has no device.
>>
>> Then I undropped it and got
>>
>> SCSI subsystem initialized
>> ata_piix 0000:00:1f.2: MAP [ P0 P2 P1 P3 ]
>> ACPI (acpi_bus-0191): Device is not power manageable [20060310]
>> ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 19 (level, low) -> IRQ 19
>> ata1: SATA max UDMA/133 cmd 0x2148 ctl 0x217E bmdma 0x2110 irq 19
>> ata2: SATA max UDMA/133 cmd 0x2140 ctl 0x217A bmdma 0x2118 irq 19
>> ata1.00: ATA-7, max UDMA/133, 321672960 sectors: LBA48 NCQ (depth 0/32)
>> ata1.00: configured for UDMA/133
>> scsi0 : ata_piix
>>
>> and a computer which boots.
>>
>> Look closer, please ;)
>
> Hello, Andrew.
>
> I see. It seems that you're reporting two separate problems - your
> PCS register doesn't report presence properly && the TF registers
> report ghost device if the first device is ATAPI. I can reproduce the
> second here, but AFAIK the only controller which had problem with PCS
> persence bits was ESB6300 until now.
>
> Can you post the result of 'lspci -n' and ata_piix boot probing
> messages with the following patch applied? It would be helpful if you
> tell us how devices are actually connected. Also, where did the patch
> come from? With what comment?

At this point it may be relevant to note that Intel tells me that PCS
has changed on -every- chip. So, ICH8 PCS register behaves differently
from ICH7 and prior.

Jeff



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