sb_edac: Add support for Broadwell-DE processor

Broadwell-DE is the microserver version of next generation Xeon
processors.  A whole bunch of new PCIe device ids, but otherwise
pretty much the same as Haswell.
Acked-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/edac/sb_edac.c

@@ -262,6 +262,7 @@ enum type {
 	SANDY_BRIDGE,
 	IVY_BRIDGE,
 	HASWELL,
+	BROADWELL,
 };
 
 struct sbridge_pvt;
@@ -446,7 +447,7 @@ static const struct pci_id_table pci_dev_descr_ibridge_table[] = {
  *	- each SMI channel interfaces with a scalable memory buffer
  *	- each scalable memory buffer supports 4 DDR3/DDR4 channels, 3 DPC
  */
-#define HASWELL_DDRCRCLKCONTROLS 0xa10
+#define HASWELL_DDRCRCLKCONTROLS 0xa10 /* Ditto on Broadwell */
 #define HASWELL_HASYSDEFEATURE2 0x84
 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_VTD_MISC 0x2f28
 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0	0x2fa0
@@ -497,6 +498,46 @@ static const struct pci_id_table pci_dev_descr_haswell_table[] = {
 	{0,}			/* 0 terminated list. */
 };
 
+/*
+ * Broadwell support
+ *
+ * DE processor:
+ *	- 1 IMC
+ *	- 2 DDR3 channels, 2 DPC per channel
+ */
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_VTD_MISC 0x6f28
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0	0x6fa0
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA	0x6fa8
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_THERMAL 0x6f71
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0 0x6ffc
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1 0x6ffd
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0 0x6faa
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1 0x6fab
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2 0x6fac
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3 0x6fad
+#define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0 0x6faf
+
+static const struct pci_id_descr pci_dev_descr_broadwell[] = {
+	/* first item must be the HA */
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0, 0)		},
+
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0, 0)	},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1, 0)	},
+
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA, 0)	},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_THERMAL, 0)	},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0, 0)	},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1, 0)	},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2, 0)	},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3, 0)	},
+	{ PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0, 1)	},
+};
+
+static const struct pci_id_table pci_dev_descr_broadwell_table[] = {
+	PCI_ID_TABLE_ENTRY(pci_dev_descr_broadwell),
+	{0,}			/* 0 terminated list. */
+};
+
 /*
  *	pci_device_id	table for which devices we are looking for
  */
@@ -504,6 +545,7 @@ static const struct pci_device_id sbridge_pci_tbl[] = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0)},
+	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0)},
 	{0,}			/* 0 terminated list. */
 };
 
@@ -768,12 +810,22 @@ static int check_if_ecc_is_active(const u8 bus, enum type type)
 	struct pci_dev *pdev = NULL;
 	u32 mcmtr, id;
 
-	if (type == IVY_BRIDGE)
+	switch (type) {
+	case IVY_BRIDGE:
 		id = PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA;
-	else if (type == HASWELL)
+		break;
+	case HASWELL:
 		id = PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA;
-	else
+		break;
+	case SANDY_BRIDGE:
 		id = PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA;
+		break;
+	case BROADWELL:
+		id = PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA;
+		break;
+	default:
+		return -ENODEV;
+	}
 
 	pdev = get_pdev_same_bus(bus, id);
 	if (!pdev) {
@@ -801,7 +853,7 @@ static int get_dimm_config(struct mem_ctl_info *mci)
 	enum edac_type mode;
 	enum mem_type mtype;
 
-	if (pvt->info.type == HASWELL)
+	if (pvt->info.type == HASWELL || pvt->info.type == BROADWELL)
 		pci_read_config_dword(pvt->pci_sad1, SAD_TARGET, &reg);
 	else
 		pci_read_config_dword(pvt->pci_br0, SAD_TARGET, &reg);
@@ -1182,7 +1234,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
 		*socket = sad_interleave[idx];
 		edac_dbg(0, "SAD interleave index: %d (wayness %d) = CPU socket %d\n",
 			 idx, sad_way, *socket);
-	} else if (pvt->info.type == HASWELL) {
+	} else if (pvt->info.type == HASWELL || pvt->info.type == BROADWELL) {
 		int bits, a7mode = A7MODE(dram_rule);
 
 		if (a7mode) {
@@ -1831,6 +1883,82 @@ static int haswell_mci_bind_devs(struct mem_ctl_info *mci,
 	return -ENODEV;
 }
 
+static int broadwell_mci_bind_devs(struct mem_ctl_info *mci,
+				 struct sbridge_dev *sbridge_dev)
+{
+	struct sbridge_pvt *pvt = mci->pvt_info;
+	struct pci_dev *pdev;
+	int i;
+
+	/* there's only one device per system; not tied to any bus */
+	if (pvt->info.pci_vtd == NULL)
+		/* result will be checked later */
+		pvt->info.pci_vtd = pci_get_device(PCI_VENDOR_ID_INTEL,
+						   PCI_DEVICE_ID_INTEL_BROADWELL_IMC_VTD_MISC,
+						   NULL);
+
+	for (i = 0; i < sbridge_dev->n_devs; i++) {
+		pdev = sbridge_dev->pdev[i];
+		if (!pdev)
+			continue;
+
+		switch (pdev->device) {
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0:
+			pvt->pci_sad0 = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1:
+			pvt->pci_sad1 = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0:
+			pvt->pci_ha0 = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA:
+			pvt->pci_ta = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_THERMAL:
+			pvt->pci_ras = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0:
+			pvt->pci_tad[0] = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1:
+			pvt->pci_tad[1] = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2:
+			pvt->pci_tad[2] = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3:
+			pvt->pci_tad[3] = pdev;
+			break;
+		case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0:
+			pvt->pci_ddrio = pdev;
+			break;
+		default:
+			break;
+		}
+
+		edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n",
+			 sbridge_dev->bus,
+			 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
+			 pdev);
+	}
+
+	/* Check if everything were registered */
+	if (!pvt->pci_sad0 || !pvt->pci_ha0 || !pvt->pci_sad1 ||
+	    !pvt->pci_ras  || !pvt->pci_ta || !pvt->info.pci_vtd)
+		goto enodev;
+
+	for (i = 0; i < NUM_CHANNELS; i++) {
+		if (!pvt->pci_tad[i])
+			goto enodev;
+	}
+	return 0;
+
+enodev:
+	sbridge_printk(KERN_ERR, "Some needed devices are missing\n");
+	return -ENODEV;
+}
+
 /****************************************************************************
 			Error check routines
  ****************************************************************************/
@@ -2243,6 +2371,25 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
 		if (unlikely(rc < 0))
 			goto fail0;
 		break;
+	case BROADWELL:
+		/* rankcfgr isn't used */
+		pvt->info.get_tolm = haswell_get_tolm;
+		pvt->info.get_tohm = haswell_get_tohm;
+		pvt->info.dram_rule = ibridge_dram_rule;
+		pvt->info.get_memory_type = haswell_get_memory_type;
+		pvt->info.get_node_id = haswell_get_node_id;
+		pvt->info.rir_limit = haswell_rir_limit;
+		pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule);
+		pvt->info.interleave_list = ibridge_interleave_list;
+		pvt->info.max_interleave = ARRAY_SIZE(ibridge_interleave_list);
+		pvt->info.interleave_pkg = ibridge_interleave_pkg;
+		mci->ctl_name = kasprintf(GFP_KERNEL, "Broadwell Socket#%d", mci->mc_idx);
+
+		/* Store pci devices at mci for faster access */
+		rc = broadwell_mci_bind_devs(mci, sbridge_dev);
+		if (unlikely(rc < 0))
+			goto fail0;
+		break;
 	}
 
 	/* Get dimm basic config and the memory layout */
@@ -2308,6 +2455,10 @@ static int sbridge_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		rc = sbridge_get_all_devices(&num_mc, pci_dev_descr_haswell_table);
 		type = HASWELL;
 		break;
+	case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0:
+		rc = sbridge_get_all_devices(&num_mc, pci_dev_descr_broadwell_table);
+		type = BROADWELL;
+		break;
 	}
 	if (unlikely(rc < 0))
 		goto fail0;