Messages in this thread | | | Date | Mon, 03 Jun 2002 07:36:35 +0200 | From | Martin Dalecki <> | Subject | Re: FUD or FACTS ?? but a new FLAME! |
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Andre Hedrick wrote: > On Sun, 2 Jun 2002, Bartlomiej Zolnierkiewicz wrote: > > >>I apology for flames Andre, after some thinking I came to >>conclusion that if speaking hardware you are generally right. >> >>I hope we can together resolve transport layer issues in 2.5. > > > Bartlomiej, > > Thanks, and we worked well in the past togather, and there has never been > a communication problem with you. > > Lets hope so, and please change the maintainer file to your name. > As you were in mind in the past to replace me when I burned out.
O co chodzi? Po prostu powinno się przenieść dwa typy host chipów intela do kategori - "może działa jak chcesz to spróbuj":
Ulf Axelsson to wszystko dawno już rozwiązał:
Hi Martin!
(Note: This mail (and myself) is intentionally _NOT_ intended to go anywhere near linux-kernel and the regular flame fests. I'm as anonymous as one can be ;-)
I have been reading the stuff about the difference between ATA/100 and ATA/133 talking about clock cycles, buffer sizes, transmission directions and what not and were quite unable to understand what the point was until I looked at the public Intel ICH4 spec (the one available to us mortals without connections :-)
ftp://download.intel.com/design/chipsets/manuals/29860002.pdf
Intel do state that the ICH4/82801DB supports only ATA/100 not ATA/133. Looking through some reviews on the net on the 845E/G they do say the same thing.
In the light of that perhaps the code in drivers/ide/piix.c stating that the ICH4 does ATA/133 is a bit optimistic and should be moved to the "try it if you want to " CONFIG_BLK_DEV_PIIX_TRY133 option.
Of course Vojtek might have better info that says otherwise.
<<<CUTOUT>>> static struct piix_ide_chip { unsigned short id; unsigned char flags; } piix_ide_chips[] = { { PCI_DEVICE_ID_INTEL_82801DB_9, PIIX_UDMA_133 | PIIX_PINGPONG }, ^^^^^^^^^^^^^
/* Intel 82801DB ICH4 */ { PCI_DEVICE_ID_INTEL_82801CA_11, PIIX_UDMA_100 | PIIX_PINGPONG }, /* Intel 82801CA ICH3/ICH3-S */ { PCI_DEVICE_ID_INTEL_82801CA_10, PIIX_UDMA_100 | PIIX_PINGPONG }, /* Intel 82801CAM ICH3-M */ { PCI_DEVICE_ID_INTEL_82801E_9, PIIX_UDMA_100 | PIIX_PINGPONG }, <<<CUTOUT>>>
Things would be easier if "you know who" could just say that according to public specs the ICH4 does not support ATA/133 instead of all that technical talk......
Regards, Ulf
PS. It would be kind if you could tell me where the source to the new ide-info version you talked about can be found?
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