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SubjectRe: libata ignores non-dma disks?
Jeff Garzik wrote:

> Ed Sweetman wrote:
>
>> I'm using 2.6.16-rc6-ide1 (alan's patchset) and using the sata_nv and
>> pata_amd drivers. I have all UDMA drives except a CF disk -> IDE
>> interface, which should be running in PIO mode4. Libata detects the
>> device, but spits out a message about "no dma" and then says it's not
>> supported and is ignoring it. Is this device not supported because
>> it's not using dma or for some other reason?
>> It's the only device on it's channel (secondary pata)
>>
>> ata6: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15
>> ata6: dev 0 cfg 49:0e00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000
>> 88:0000
>> ata6: no dma
>> ata6: dev 0 not supported, ignoring
>> scsi5 : pata_amd
>
>
> Delete the "no dma" check, and debug from there... PIO support is in
> there, just needs a few final fixes.
>
> Jeff


Works perfectly now. Thanks. What isn't finished about it?

anyways, here's an hdparm readout, for those that care.

CompactFlash ATA device, with removable media
Model Number: TOSHIBA THNCF512MPG
Serial Number: TSBC512M05928B66857C
Firmware Revision: 1.00
Standards:
Likely used: 4
Configuration:
Logical max current
cylinders 993 993
heads 16 16
sectors/track 63 63
--
bytes/track: 33264 bytes/sector: 528
CHS current addressable sectors: 1000944
LBA user addressable sectors: 1000944
device size with M = 1024*1024: 488 MBytes
device size with M = 1000*1000: 512 MBytes
Capabilities:
LBA, IORDY(can be disabled)
Buffer size: 2.0kB bytes avail on r/w long: 4 Queue
depth: 1
Standby timer values: spec'd by Vendor
R/W multiple sector transfer: Max = 1 Current = 1
DMA: not supported
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns

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