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(parent: 1d93e52) | patch
I/OAT: add verification for proper APICID_TAG_MAP setting by BIOS
authorMaciej Sosnowski <maciej.sosnowski@intel.com>
Thu, 26 Feb 2009 10:04:23 +0000 (11:04 +0100)
committerDan Williams <dan.j.williams@intel.com>
Wed, 4 Mar 2009 23:04:39 +0000 (16:04 -0700)
commit49bc46360d68156ce82b2b1a12badb80078453a0
treedf7f187e26e3443384074376f52e47e516cf1bcatree | snapshot
parent1d93e52eb48df986a3c4d5ad8a520bf1f6837367commit | diff
I/OAT: add verification for proper APICID_TAG_MAP setting by BIOS

BIOS versions for systems with I/OAT ver.2 have been found
which fail to program APICID_TAG_MAP for DCA.
The ioatdma driver should recognize incorrectly set APICID_TAG_MAP
and disable DCA in that case.

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
drivers/dma/ioat_dca.c diff | blob | history
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