From 3b28eea7d20972ad0394ae8f9e6e08af5d76e189 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Thu, 11 Jun 2020 13:08:42 +0200
Subject: [PATCH] aurora_axis: add two functions to reset counters and
 configure loopback mode

---
 fpga/include/villas/fpga/ips/aurora.hpp |  9 ++++++++-
 fpga/lib/ips/aurora.cpp                 | 21 +++++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/fpga/include/villas/fpga/ips/aurora.hpp b/fpga/include/villas/fpga/ips/aurora.hpp
index 58debed51..c3eacd8f8 100644
--- a/fpga/include/villas/fpga/ips/aurora.hpp
+++ b/fpga/include/villas/fpga/ips/aurora.hpp
@@ -69,10 +69,17 @@ public:
 
 	std::string
 	getDescription() const
-	{ return "Aurora 8B/10B and additional support modules, like, communication with NovaCor and read/write status/control registers."; }
+	{ return "Aurora 8B/10B and additional support modules, like an AXI4-Lite register interface."; }
 
 	Vlnv getCompatibleVlnv() const
 	{ return {"acs.eonerc.rwth-aachen.de:user:aurora_axis:"}; }
+
+	void
+	setLoopback(bool state);
+
+	void
+	resetFrameCounters();
+
 };
 
 } // namespace ip
diff --git a/fpga/lib/ips/aurora.cpp b/fpga/lib/ips/aurora.cpp
index 0669a7dba..daaee9f29 100644
--- a/fpga/lib/ips/aurora.cpp
+++ b/fpga/lib/ips/aurora.cpp
@@ -98,6 +98,27 @@ void Aurora::dump()
 	logger->info("Aurora frames sent:     {}", outCnt);
 }
 
+void Aurora::setLoopback(bool state)
+{
+	auto cr = readMemory<uint32_t>(registerMemory, AURORA_AXIS_CR_OFFSET);
+
+	if (state)
+		cr |= AURORA_AXIS_CR_LOOPBACK;
+	else
+		cr &= ~AURORA_AXIS_CR_LOOPBACK;
+
+	writeMemory<uint32_t>(registerMemory, AURORA_AXIS_CR_OFFSET, cr);
+}
+
+void Aurora::resetFrameCounters()
+{
+	auto cr = readMemory<uint32_t>(registerMemory, AURORA_AXIS_CR_OFFSET);
+
+	cr |= AURORA_AXIS_CR_RST_CTRS;
+
+	writeMemory<uint32_t>(registerMemory, AURORA_AXIS_CR_OFFSET, cr);
+}
+
 AuroraFactory::AuroraFactory() :
     IpNodeFactory(getName())
 {