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authorHubert Chrzaniuk <hubert.chrzaniuk@intel.com>2015-12-11 16:21:22 +0300
committerBorislav Petkov <bp@suse.de>2015-12-11 18:58:32 +0300
commit45f4d3ab3ee8d12471e47057ea4d0d86167b25a0 (patch)
tree66d84c5b50c58c558bbbd1f214e1e1382b122d54 /drivers/edac
parentc4cf3b454ecaa222aad9017932bd3b9c9325d931 (diff)
downloadlinux-45f4d3ab3ee8d12471e47057ea4d0d86167b25a0.tar.xz
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>
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/sb_edac.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index b3d924da5985..e438ee5b433f 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -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);