amd64_edac: Add Family 16h support
Add code to handle DRAM ECC errors decoding for Fam16h.
Tested on Fam16h with ECC turned on using the mce_amd_inj facility and
works fine.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Boris: cleanups and clarifications ]
Signed-off-by: Borislav Petkov <bp@suse.de>
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index e1d13c4..8b6a034 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -98,6 +98,7 @@
*
* F15h: we select which DCT we access using F1x10C[DctCfgSel]
*
+ * F16h: has only 1 DCT
*/
static int k8_read_dct_pci_cfg(struct amd64_pvt *pvt, int addr, u32 *val,
const char *func)
@@ -340,6 +341,27 @@
base_bits = GENMASK(21, 31) | GENMASK(9, 15);
mask_bits = GENMASK(21, 29) | GENMASK(9, 15);
addr_shift = 4;
+
+ /*
+ * F16h needs two addr_shift values: 8 for high and 6 for low
+ * (cf. F16h BKDG).
+ */
+ } else if (boot_cpu_data.x86 == 0x16) {
+ csbase = pvt->csels[dct].csbases[csrow];
+ csmask = pvt->csels[dct].csmasks[csrow >> 1];
+
+ *base = (csbase & GENMASK(5, 15)) << 6;
+ *base |= (csbase & GENMASK(19, 30)) << 8;
+
+ *mask = ~0ULL;
+ /* poke holes for the csmask */
+ *mask &= ~((GENMASK(5, 15) << 6) |
+ (GENMASK(19, 30) << 8));
+
+ *mask |= (csmask & GENMASK(5, 15)) << 6;
+ *mask |= (csmask & GENMASK(19, 30)) << 8;
+
+ return;
} else {
csbase = pvt->csels[dct].csbases[csrow];
csmask = pvt->csels[dct].csmasks[csrow >> 1];
@@ -1150,6 +1172,21 @@
return ddr3_cs_size(cs_mode, false);
}
+/*
+ * F16h has only limited cs_modes
+ */
+static int f16_dbam_to_chip_select(struct amd64_pvt *pvt, u8 dct,
+ unsigned cs_mode)
+{
+ WARN_ON(cs_mode > 12);
+
+ if (cs_mode == 6 || cs_mode == 8 ||
+ cs_mode == 9 || cs_mode == 12)
+ return -1;
+ else
+ return ddr3_cs_size(cs_mode, false);
+}
+
static void read_dram_ctl_register(struct amd64_pvt *pvt)
{
@@ -1587,6 +1624,17 @@
.read_dct_pci_cfg = f15_read_dct_pci_cfg,
}
},
+ [F16_CPUS] = {
+ .ctl_name = "F16h",
+ .f1_id = PCI_DEVICE_ID_AMD_16H_NB_F1,
+ .f3_id = PCI_DEVICE_ID_AMD_16H_NB_F3,
+ .ops = {
+ .early_channel_count = f1x_early_channel_count,
+ .map_sysaddr_to_csrow = f1x_map_sysaddr_to_csrow,
+ .dbam_to_cs = f16_dbam_to_chip_select,
+ .read_dct_pci_cfg = f10_read_dct_pci_cfg,
+ }
+ },
};
/*
@@ -1939,7 +1987,9 @@
if (c->x86 >= 0x10) {
amd64_read_pci_cfg(pvt->F3, EXT_NB_MCA_CFG, &tmp);
- amd64_read_dct_pci_cfg(pvt, DBAM1, &pvt->dbam1);
+ if (c->x86 != 0x16)
+ /* F16h has only DCT0 */
+ amd64_read_dct_pci_cfg(pvt, DBAM1, &pvt->dbam1);
/* F10h, revD and later can do x8 ECC too */
if ((c->x86 > 0x10 || c->x86_model > 7) && tmp & BIT(25))
@@ -2356,6 +2406,11 @@
pvt->ops = &amd64_family_types[F15_CPUS].ops;
break;
+ case 0x16:
+ fam_type = &amd64_family_types[F16_CPUS];
+ pvt->ops = &amd64_family_types[F16_CPUS].ops;
+ break;
+
default:
amd64_err("Unsupported family!\n");
return NULL;
@@ -2581,6 +2636,14 @@
.class = 0,
.class_mask = 0,
},
+ {
+ .vendor = PCI_VENDOR_ID_AMD,
+ .device = PCI_DEVICE_ID_AMD_16H_NB_F2,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .class = 0,
+ .class_mask = 0,
+ },
{0, }
};
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 35637d8..2c6f113 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -172,7 +172,8 @@
*/
#define PCI_DEVICE_ID_AMD_15H_NB_F1 0x1601
#define PCI_DEVICE_ID_AMD_15H_NB_F2 0x1602
-
+#define PCI_DEVICE_ID_AMD_16H_NB_F1 0x1531
+#define PCI_DEVICE_ID_AMD_16H_NB_F2 0x1532
/*
* Function 1 - Address Map
@@ -296,6 +297,7 @@
K8_CPUS = 0,
F10_CPUS,
F15_CPUS,
+ F16_CPUS,
NUM_FAMILIES,
};