ras-mce-handler: Add support for Hygon Dhyana family 18h processor

The Hygon Dhyana family 18h processor is derived from AMD family 17h.
The Hygon Dhyana support to Linux is already accepted upstream[1].

Add Hygon Dhyana support to mce handler of rasdaemon in order to handle
MCE events on Hygon Dhyana platforms.

Reference:
[1] https://git.kernel.org/tip/fec98069fb72fb656304a3e52265e0c2fc9adf87

Signed-off-by: Pu Wen <puwen@hygon.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

ras-mce-handler.c

@@ -55,7 +55,8 @@ static char *cputype_name[] = {
 	[CPU_KNIGHTS_LANDING] = "Knights Landing",
 	[CPU_KNIGHTS_MILL] = "Knights Mill",
 	[CPU_SKYLAKE_XEON] = "Skylake server",
-	[CPU_NAPLES] = "AMD Family 17h Zen1"
+	[CPU_NAPLES] = "AMD Family 17h Zen1",
+	[CPU_DHYANA] = "Hygon Family 18h Moksha"
 };
 
 static enum cputype select_intel_cputype(struct ras_events *ras)
@@ -200,6 +201,11 @@ static int detect_cpu(struct ras_events *ras)
 			ret = EINVAL;
 		}
 		goto ret;
+	} else if (!strcmp(mce->vendor,"HygonGenuine")) {
+		if (mce->family == 24) {
+			mce->cputype = CPU_DHYANA;
+		}
+		goto ret;
 	} else if (!strcmp(mce->vendor,"GenuineIntel")) {
 		mce->cputype = select_intel_cputype(ras);
 	} else {
@@ -436,6 +442,7 @@ int ras_mce_event_handler(struct trace_seq *s,
 		rc = parse_amd_k8_event(ras, &e);
 		break;
 	case CPU_NAPLES:
+	case CPU_DHYANA:
 		rc = parse_amd_smca_event(ras, &e);
 		break;
 	default:			/* All other CPU types are Intel */

ras-mce-handler.h

@@ -51,6 +51,7 @@ enum cputype {
 	CPU_KNIGHTS_MILL,
 	CPU_SKYLAKE_XEON,
 	CPU_NAPLES,
+	CPU_DHYANA,
 };
 
 struct mce_event {