From a9ee805d450eb132840da68c5fcfe44403b41102 Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Tue, 22 Sep 2015 12:56:34 +0000
Subject: [PATCH] arm64 ThunderX PCIe workaround: enumerate only one slot for
 now

Otherwise an em(4) NIC is detected 32 times.

Submitted by:	wma@semihalf.com
Obtained from:	Semihalf
Differential Revision:	https://reviews.freebsd.org/D3706
---
 sys/arm64/cavium/thunder_pcie_pem.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sys/arm64/cavium/thunder_pcie_pem.c b/sys/arm64/cavium/thunder_pcie_pem.c
index 23f1446b8d22..f36057b93ff4 100644
--- a/sys/arm64/cavium/thunder_pcie_pem.c
+++ b/sys/arm64/cavium/thunder_pcie_pem.c
@@ -183,8 +183,16 @@ static int
 thunder_pem_maxslots(device_t dev)
 {
 
+#if 0
 	/* max slots per bus acc. to standard */
 	return (PCI_SLOTMAX);
+#else
+	/*
+	 * ARM64TODO Workaround - otherwise an em(4) interface appears to be
+	 * present on every PCI function on the bus to which it is connected
+	 */
+	return (0);
+#endif
 }
 
 static int