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EDAC, sb_edac: Set fixed DIMM width on Xeon Knights Landing 

Knights Landing does not come with register that could be used to fetch
DIMM width. However the value is fixed for this architecture so it can
be hardcoded.

Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: lukasz.anaczkowski@intel.com
Link: http://lkml.kernel.org/r/1449840082-18673-1-git-send-email-hubert.chrzaniuk@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Hubert Chrzaniuk 2015-12-11 14:21:22 +01:00 committed by Borislav Petkov
parent c4cf3b454e
commit 45f4d3ab3e
1 changed files with 7 additions and 1 deletions
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8
drivers/edac/sb_edac.c
View File

@ -924,6 +924,12 @@ out:
return mtype;
}
static enum dev_type knl_get_width(struct sbridge_pvt *pvt, u32 mtr)
{
/* for KNL value is fixed */
return DEV_X16;
}
static enum dev_type sbridge_get_width(struct sbridge_pvt *pvt, u32 mtr)
{
/* there's no way to figure out */
@ -3393,7 +3399,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
pvt->info.interleave_list = knl_interleave_list;
pvt->info.max_interleave = ARRAY_SIZE(knl_interleave_list);
pvt->info.interleave_pkg = ibridge_interleave_pkg;
pvt->info.get_width = ibridge_get_width;
pvt->info.get_width = knl_get_width;
mci->ctl_name = kasprintf(GFP_KERNEL,
"Knights Landing Socket#%d", mci->mc_idx);