Merge tag 'edac/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac

Pull edac updates from Mauro Carvalho Chehab:
 "Two EDAC fixes for Intel systems (Haswell and Ivy Bridge)"

* tag 'edac/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  sb_edac: correctly fetch DIMM width on Ivy Bridge and Haswell
  sb_edac: look harder for DDRIO on Haswell systems

1 files changed, 60 insertions, 12 deletions

diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index ca7831168298..cf1268ddef0c 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -280,6 +280,7 @@ struct sbridge_info {
 	u8		max_interleave;
 	u8		(*get_node_id)(struct sbridge_pvt *pvt);
 	enum mem_type	(*get_memory_type)(struct sbridge_pvt *pvt);
+	enum dev_type	(*get_width)(struct sbridge_pvt *pvt, u32 mtr);
 	struct pci_dev	*pci_vtd;
 };
 
@@ -471,6 +472,9 @@ static const struct pci_id_table pci_dev_descr_ibridge_table[] = {
 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD2 0x2f6c
 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD3 0x2f6d
 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0 0x2fbd
+#define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1 0x2fbf
+#define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2 0x2fb9
+#define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3 0x2fbb
 static const struct pci_id_descr pci_dev_descr_haswell[] = {
 	/* first item must be the HA */
 	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0, 0)		},
@@ -488,6 +492,9 @@ static const struct pci_id_descr pci_dev_descr_haswell[] = {
 	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD3, 1)	},
 
 	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0, 1)		},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1, 1)		},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2, 1)		},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3, 1)		},
 
 	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TA, 1)		},
 	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_THERMAL, 1)	},
@@ -762,6 +769,49 @@ out:
 	return mtype;
 }
 
+static enum dev_type sbridge_get_width(struct sbridge_pvt *pvt, u32 mtr)
+{
+	/* there's no way to figure out */
+	return DEV_UNKNOWN;
+}
+
+static enum dev_type __ibridge_get_width(u32 mtr)
+{
+	enum dev_type type;
+
+	switch (mtr) {
+	case 3:
+		type = DEV_UNKNOWN;
+		break;
+	case 2:
+		type = DEV_X16;
+		break;
+	case 1:
+		type = DEV_X8;
+		break;
+	case 0:
+		type = DEV_X4;
+		break;
+	}
+
+	return type;
+}
+
+static enum dev_type ibridge_get_width(struct sbridge_pvt *pvt, u32 mtr)
+{
+	/*
+	 * ddr3_width on the documentation but also valid for DDR4 on
+	 * Haswell
+	 */
+	return __ibridge_get_width(GET_BITFIELD(mtr, 7, 8));
+}
+
+static enum dev_type broadwell_get_width(struct sbridge_pvt *pvt, u32 mtr)
+{
+	/* ddr3_width on the documentation but also valid for DDR4 */
+	return __ibridge_get_width(GET_BITFIELD(mtr, 8, 9));
+}
+
 static u8 get_node_id(struct sbridge_pvt *pvt)
 {
 	u32 reg;
@@ -966,17 +1016,7 @@ static int get_dimm_config(struct mem_ctl_info *mci)
 
 				dimm->nr_pages = npages;
 				dimm->grain = 32;
-				switch (banks) {
-				case 16:
-					dimm->dtype = DEV_X16;
-					break;
-				case 8:
-					dimm->dtype = DEV_X8;
-					break;
-				case 4:
-					dimm->dtype = DEV_X4;
-					break;
-				}
+				dimm->dtype = pvt->info.get_width(pvt, mtr);
 				dimm->mtype = mtype;
 				dimm->edac_mode = mode;
 				snprintf(dimm->label, sizeof(dimm->label),
@@ -1869,7 +1909,11 @@ static int haswell_mci_bind_devs(struct mem_ctl_info *mci,
 		}
 			break;
 		case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0:
-			pvt->pci_ddrio = pdev;
+		case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1:
+		case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2:
+		case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3:
+			if (!pvt->pci_ddrio)
+				pvt->pci_ddrio = pdev;
 			break;
 		case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1:
 			pvt->pci_ha1 = pdev;
@@ -2361,6 +2405,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
 		pvt->info.interleave_list = ibridge_interleave_list;
 		pvt->info.max_interleave = ARRAY_SIZE(ibridge_interleave_list);
 		pvt->info.interleave_pkg = ibridge_interleave_pkg;
+		pvt->info.get_width = ibridge_get_width;
 		mci->ctl_name = kasprintf(GFP_KERNEL, "Ivy Bridge Socket#%d", mci->mc_idx);
 
 		/* Store pci devices at mci for faster access */
@@ -2380,6 +2425,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
 		pvt->info.interleave_list = sbridge_interleave_list;
 		pvt->info.max_interleave = ARRAY_SIZE(sbridge_interleave_list);
 		pvt->info.interleave_pkg = sbridge_interleave_pkg;
+		pvt->info.get_width = sbridge_get_width;
 		mci->ctl_name = kasprintf(GFP_KERNEL, "Sandy Bridge Socket#%d", mci->mc_idx);
 
 		/* Store pci devices at mci for faster access */
@@ -2399,6 +2445,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
 		pvt->info.interleave_list = ibridge_interleave_list;
 		pvt->info.max_interleave = ARRAY_SIZE(ibridge_interleave_list);
 		pvt->info.interleave_pkg = ibridge_interleave_pkg;
+		pvt->info.get_width = ibridge_get_width;
 		mci->ctl_name = kasprintf(GFP_KERNEL, "Haswell Socket#%d", mci->mc_idx);
 
 		/* Store pci devices at mci for faster access */
@@ -2418,6 +2465,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
 		pvt->info.interleave_list = ibridge_interleave_list;
 		pvt->info.max_interleave = ARRAY_SIZE(ibridge_interleave_list);
 		pvt->info.interleave_pkg = ibridge_interleave_pkg;
+		pvt->info.get_width = broadwell_get_width;
 		mci->ctl_name = kasprintf(GFP_KERNEL, "Broadwell Socket#%d", mci->mc_idx);
 
 		/* Store pci devices at mci for faster access */