sata_mv ncq Introduce per-tag SG tables

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In preparation for supporting NCQ, we must allocate separate SG tables
for each command tag, rather than just a single table per port as before.

Gen-I hardware cannot do NCQ, though, so we still allocate just a single
table for that, but populate it in all 32 slots to avoid special-cases
elsewhere in hotter paths of the code.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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Mark Lord 2008-01-29 13:24:00 -05:00 • committed by Jeff Garzik

parent bf7f22b9ca

commit eb73d558d1

1 changed files with 40 additions and 15 deletions

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drivers/ata/sata_mv.c

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