Messages in this thread | | | Date | Tue, 22 Apr 2008 17:36:40 +0400 | From | Sergei Shtylyov <> | Subject | Re: [2.6 patch] select ATA_SFF |
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Tejun Heo wrote:
>> ADMA is not SFF-8038i compilant, it's the IDE DMA spec of its own. >> And I'm seeing references to libata-sff.c... confusing.
> In libata, SFF is used for controllers which have TF interface
I can't figure out to which SFF specs this refers then... althought I'm not really familiar with them well enough.
> and BMDMA > is used for the BMDMA part of SFF-8038i.
Is there any other part in it? One concerning PCI?
> I think this is the source of confusion here.
Yes.
>> Looks like there's no clean separation within libata-sff.c itself >> between SFF-8038i (BMDMA spec) and IDE registers itself -- that >> confused me: at first I thought there's a big issue with a patch. :-/
>> Jeff, Tejun, what "sff" in the file name actually means? Isn't it >> strange that the drivers lacking DMA support or not really compliant >> with SFF-8038i have to link with this file?
> Maybe it should be libata-tf and libata-bmdma, but sff (sans bmdma) > and bmdma is acceptable, hopefully, right?
What's sff sans bmdma?
> Thanks.
WBR, Sergei
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