libata: HPA support

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Signed-off-by: Alan Cox <alan@redhat.com>

Add support for ignoring the BIOS HPA result (off by default) and setting
the disk to the full available size unless already frozen.

Tested with various platforms/disks and confirmed to work with the
Macintosh (which broke earlier) and ata_piix (breakage due to the LBA48
readback that Tejun fixed).

For normal users this brings us, I believe, to feature parity with old IDE
(and of course more featured in some areas too).
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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Alan Cox 2007-04-11 00:23:13 +01:00 • committed by Jeff Garzik

parent 6bfff31e77

commit 1e999736ca

3 changed files with 212 additions and 0 deletions

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include/linux/ata.h

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include/linux/libata.h

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