linux-kernel - [PATCH 3/3] EDAC/amd64: Add DIMM device type for Fam17h

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Date:   Wed, 21 Mar 2018 14:13:35 -0500
From:   Yazen Ghannam <Yazen.Ghannam@....com>
To:     linux-edac@...r.kernel.org
Cc:     Yazen Ghannam <Yazen.Ghannam@....com>,
        linux-kernel@...r.kernel.org, bp@...e.de
Subject: [PATCH 3/3] EDAC/amd64: Add DIMM device type for Fam17h

From: Yazen Ghannam <yazen.ghannam@....com>

Set the DIMM device type for Fam17h.

Cc: <stable@...r.kernel.org> # 4.14.x
Signed-off-by: Yazen Ghannam <yazen.ghannam@....com>
---
 drivers/edac/amd64_edac.c | 17 ++++++++++++++---
 drivers/edac/amd64_edac.h |  1 +
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 054086b19c6c..59d0085e4ffa 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -998,7 +998,7 @@ static void read_dct_base_mask(struct amd64_pvt *pvt)
 
 static void determine_memory_type(struct amd64_pvt *pvt)
 {
-	u32 dram_ctrl, dcsm;
+	u32 dram_ctrl, dcsm, dimm_cfg;
 
 	switch (pvt->fam) {
 	case 0xf:
@@ -1046,12 +1046,22 @@ static void determine_memory_type(struct amd64_pvt *pvt)
 		goto ddr3;
 
 	case 0x17:
-		if ((pvt->umc[0].dimm_cfg | pvt->umc[1].dimm_cfg) & BIT(5))
+		dimm_cfg = pvt->umc[0].dimm_cfg | pvt->umc[1].dimm_cfg;
+
+		if (dimm_cfg & BIT(5))
 			pvt->dram_type = MEM_LRDDR4;
-		else if ((pvt->umc[0].dimm_cfg | pvt->umc[1].dimm_cfg) & BIT(4))
+		else if (dimm_cfg & BIT(4))
 			pvt->dram_type = MEM_RDDR4;
 		else
 			pvt->dram_type = MEM_DDR4;
+
+		if (dimm_cfg & BIT(7))
+			pvt->dev_type = DEV_X16;
+		else if (dimm_cfg & BIT(6))
+			pvt->dev_type = DEV_X4;
+		else
+			pvt->dev_type = DEV_UNKNOWN;
+
 		return;
 
 	default:
@@ -2855,6 +2865,7 @@ static int init_csrows(struct mem_ctl_info *mci)
 		for (j = 0; j < pvt->channel_count; j++) {
 			dimm = csrow->channels[j]->dimm;
 			dimm->mtype = pvt->dram_type;
+			dimm->dtype = pvt->dev_type;
 			dimm->edac_mode = edac_mode;
 		}
 	}
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 1d4b74e9a037..47696d3ce487 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -368,6 +368,7 @@ struct amd64_pvt {
 
 	/* cache the dram_type */
 	enum mem_type dram_type;
+	enum dev_type dev_type;
 
 	struct amd64_umc *umc;	/* UMC registers */
 };
-- 
2.14.1