From 62bce59fed14c1cf57ce6cb7b208a9fccda3f4a5 Mon Sep 17 00:00:00 2001
From: Jean Delvare <jdelvare@suse.de>
Date: Wed, 23 Oct 2019 12:44:20 +0200
Subject: [PATCH 2/2] dmidecode: Decode system slot base bus width and peers

SMBIOS version 3.2.0 added extra fields are the end of structure type
9. Decode these extra fields (base data bus width and peers) when
present.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
---
 dmidecode.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/dmidecode.c b/dmidecode.c
index 8e535356de71..8ebd8626d6ea 100644
--- a/dmidecode.c
+++ b/dmidecode.c
@@ -2033,6 +2033,16 @@ static void dmi_slot_segment_bus_func(u16 code1, u8 code2, u8 code3, const char
 		       prefix, code1, code2, code3 >> 3, code3 & 0x7);
 }
 
+static void dmi_slot_peers(u8 n, const u8 *data, const char *prefix)
+{
+	int i;
+
+	for (i = 1; i <= n; i++, data += 5)
+		printf("%sPeer Device %d: %04x:%02x:%02x.%x (Width %u)\n",
+		       prefix, i, WORD(data), data[2], data[3] >> 3,
+		       data[3] & 0x07, data[4]);
+}
+
 /*
  * 7.11 On Board Devices Information (Type 10)
  */
@@ -4213,6 +4223,11 @@ static void dmi_decode(const struct dmi_header *h, u16 ver)
 				dmi_slot_characteristics(data[0x0B], data[0x0C], "\t\t");
 			if (h->length < 0x11) break;
 			dmi_slot_segment_bus_func(WORD(data + 0x0D), data[0x0F], data[0x10], "\t");
+			if (h->length < 0x13) break;
+			printf("\tData Bus Width: %u\n", data[0x11]);
+			printf("\tPeer Devices: %u\n", data[0x12]);
+			if (h->length - 0x13 >= data[0x12] * 5)
+				dmi_slot_peers(data[0x12], data + 0x13, "\t");
 			break;
 
 		case 10: /* 7.11 On Board Devices Information */
-- 
2.17.1