Re: libata reset-seq merge broke sata_sil on sh

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On Sat, May 12, 2007 at 12:49:28PM +0900, Paul Mundt wrote:
> On Fri, May 11, 2007 at 11:39:20AM +0200, Tejun Heo wrote:
> > Paul Mundt wrote:
> > > Bumping the hardreset delay up does indeed fix it, I've had to bump it up
> > > to 1200 before it started working (at 600 it still fails):
> > > 
> > > [    0.967379] scsi0 : sata_sil
> > > [    0.970425] scsi1 : sata_sil
> > > [    0.973298] ata1: SATA max UDMA/100 cmd 0xfd000280 ctl 0xfd00028a bmdma 0xfd000200 irq 0
> > > [    0.981331] ata2: SATA max UDMA/100 cmd 0xfd0002c0 ctl 0xfd0002ca bmdma 0xfd000208 irq 0
> > > [    1.299353] ata1: device not ready (errno=-19), forcing hardreset
> > > [    2.817893] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
> > > [    2.826284] ata1.00: ata_hpa_resize 1: sectors = 39070080, hpa_sectors = 39070080
> > > [    2.831052] ata1.00: ATA-5: HHD424020F7SV00, 00MLA0A5, max UDMA/100
> > > [    2.837548] ata1.00: 39070080 sectors, multi 0: LBA
> > > [    2.842702] ata1.00: applying bridge limits
> > > [    2.854162] ata1.00: ata_hpa_resize 1: sectors = 39070080, hpa_sectors = 39070080
> > > [    2.858938] ata1.00: configured for UDMA/100
> > > [    3.172602] ata2: SATA link down (SStatus 0 SControl 310)
> > > [    3.175736] scsi 0:0:0:0: Direct-Access     ATA      HHD424020F7SV00  00ML PQ: 0 ANSI: 5
> > > 
> > > I'm not sure if it matters or not, but this is an iVDR drive, so that
> > > might also have additional implications.
> > 
> > Don't have the flimsiest idea what an iVDR drive is but I take it that
> > it's some sort of special purpose thing.  :-)
> > 
> http://www.ivdr.org
> 
> The GoVault appears to be a similar device, in that they're both
> removeable cartridges.
> 
> > Gary, IIRC, the requirement for GoVault was 3secs, right?  Paul, can you
> > try to estimate the minimum required delay?  Please go down by 100ms and
> > report where it breaks.
> > 
> 800ms was the lowest it would work at, 700ms still breaks.

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