From 0c63c46e31642d0102542a745af6b445a9d22b3b Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Tue, 13 Dec 2022 21:43:25 -0600
Subject: Implement interrupt controller

---
 tb/avalon.impl.hpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'tb/avalon.impl.hpp')

diff --git a/tb/avalon.impl.hpp b/tb/avalon.impl.hpp
index 6f4bfb9..e04c7b0 100644
--- a/tb/avalon.impl.hpp
+++ b/tb/avalon.impl.hpp
@@ -21,17 +21,29 @@ namespace taller::avalon
 		devices.push_back(binding { base, mask, dev });
 	}
 
+	template<class Platform>
+	void interconnect<Platform>::attach_intc(interrupt_controller &intc)
+	{
+		assert(root_intc == nullptr);
+
+		attach(intc.as_slave());
+		root_intc = &intc;
+	}
+
 	template<class Platform>
 	bool interconnect<Platform>::tick(bool clk)
 	{
 		if(!plat.reset_reset_n) [[unlikely]]
 		{
 			active = nullptr;
+			plat.avl_irq = 0;
+
 			avl_read = false;
 			avl_write = false;
 			avl_address = 0;
 			avl_writedata = 0;
 			avl_byteenable = 0;
+
 			return true;
 		}
 
@@ -59,6 +71,11 @@ namespace taller::avalon
 			binding.dev.tick();
 		}
 
+		if(root_intc)
+		{
+			plat.avl_irq = root_intc->irq();
+		}
+
 		if(!active)
 		{
 			avl_address = plat.avl_address;
-- 
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