From d5b1a65c0e3a0b6b46eb66d5d0284bf3a6cc1e0c Mon Sep 17 00:00:00 2001
From: Anup Patel <anup@brainfault.org>
Date: Tue, 14 Dec 2021 17:23:45 +0530
Subject: [PATCH] Add an abstract interrupt controller interface

We add an abstract interrupt controller interface which can be used by
devices to trigger wired interrupts.

Signed-off-by: Anup Patel <anup@brainfault.org>
---
 riscv/abstract_interrupt_controller.h | 14 ++++++++++++++
 riscv/devices.h                       |  1 +
 2 files changed, 15 insertions(+)
 create mode 100644 riscv/abstract_interrupt_controller.h

diff --git a/riscv/abstract_interrupt_controller.h b/riscv/abstract_interrupt_controller.h
new file mode 100644
index 00000000..946b079f
--- /dev/null
+++ b/riscv/abstract_interrupt_controller.h
@@ -0,0 +1,14 @@
+#ifndef _RISCV_ABSTRACT_INTERRUPT_CONTROLLER_H
+#define _RISCV_ABSTRACT_INTERRUPT_CONTROLLER_H
+
+#include "decode.h"
+#include <cstdint>
+#include <cstddef>
+
+class abstract_interrupt_controller_t {
+ public:
+  virtual void set_interrupt_level(uint32_t interrupt_id, int level) = 0;
+  virtual ~abstract_interrupt_controller_t() {}
+};
+
+#endif
diff --git a/riscv/devices.h b/riscv/devices.h
index 9200f29b..934904ac 100644
--- a/riscv/devices.h
+++ b/riscv/devices.h
@@ -4,6 +4,7 @@
 #include "decode.h"
 #include "mmio_plugin.h"
 #include "abstract_device.h"
+#include "abstract_interrupt_controller.h"
 #include "platform.h"
 #include <map>
 #include <vector>