From: Tony Luck <tony.luck@intel.com>
To: linux-edac@vger.kernel.org
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>, Fan Du <fan.du@intel.com>,
Wen Jin <wen.jin@intel.com>, Tony Luck <tony.luck@intel.com>,
Aristeu Rozanski <aris@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] EDAC/i10nm: Fix NVDIMM detection
Date: Wed, 18 Aug 2021 10:57:00 -0700 [thread overview]
Message-ID: <20210818175701.1611513-2-tony.luck@intel.com> (raw)
In-Reply-To: <20210818175701.1611513-1-tony.luck@intel.com>
From: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
MCDDRCFG is a per-channel register and uses bit{0,1} to indicate
the NVDIMM presence on DIMM slot{0,1}. Current i10nm_edac driver
wrongly uses MCDDRCFG as per-DIMM register and fails to detect
the NVDIMM.
Fix it by reading MCDDRCFG as per-channel register and using its
bit{0,1} to check whether the NVDIMM is populated on DIMM slot{0,1}.
Fixes: d4dc89d069aa ("EDAC, i10nm: Add a driver for Intel 10nm server processors")
Reported-by: Fan Du <fan.du@intel.com>
Tested-by: Wen Jin <wen.jin@intel.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
drivers/edac/i10nm_base.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index 6ce0ed2ffaaf..b4a024cb8b97 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -33,9 +33,9 @@
#define I10NM_GET_DIMMMTR(m, i, j) \
readl((m)->mbase + ((m)->hbm_mc ? 0x80c : 0x2080c) + \
(i) * (m)->chan_mmio_sz + (j) * 4)
-#define I10NM_GET_MCDDRTCFG(m, i, j) \
+#define I10NM_GET_MCDDRTCFG(m, i) \
readl((m)->mbase + ((m)->hbm_mc ? 0x970 : 0x20970) + \
- (i) * (m)->chan_mmio_sz + (j) * 4)
+ (i) * (m)->chan_mmio_sz)
#define I10NM_GET_MCMTR(m, i) \
readl((m)->mbase + ((m)->hbm_mc ? 0xef8 : 0x20ef8) + \
(i) * (m)->chan_mmio_sz)
@@ -321,10 +321,10 @@ static int i10nm_get_dimm_config(struct mem_ctl_info *mci,
ndimms = 0;
amap = I10NM_GET_AMAP(imc, i);
+ mcddrtcfg = I10NM_GET_MCDDRTCFG(imc, i);
for (j = 0; j < imc->num_dimms; j++) {
dimm = edac_get_dimm(mci, i, j, 0);
mtr = I10NM_GET_DIMMMTR(imc, i, j);
- mcddrtcfg = I10NM_GET_MCDDRTCFG(imc, i, j);
edac_dbg(1, "dimmmtr 0x%x mcddrtcfg 0x%x (mc%d ch%d dimm%d)\n",
mtr, mcddrtcfg, imc->mc, i, j);
--
2.29.2
next prev parent reply other threads:[~2021-08-18 17:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 17:56 [PATCH 0/2] EDAC/i10nm fix and enhancement Tony Luck
2021-08-18 17:57 ` Tony Luck [this message]
2021-08-18 17:57 ` [PATCH 2/2] EDAC/i10nm: Retrieve and print retry_rd_err_log registers Tony Luck
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