1 files changed, 69 insertions, 0 deletions
diff --git a/kern/intr.h b/kern/intr.h
new file mode 100644
index 00000000..1cdab5ef
--- /dev/null
+++ b/kern/intr.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2017 Richard Braun.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Machine-independent interrupt management.
+ */
+
+#ifndef _KERN_INTR_H
+#define _KERN_INTR_H
+
+/*
+ * Type for interrupt handler functions.
+ *
+ * Return codes :
+ *  - 0             Interrupt successfully handled
+ *  - ERROR_AGAIN   Spurious interrupt
+ */
+typedef int (*intr_handler_fn_t)(void *arg);
+
+/*
+ * Operations of an interrupt controller.
+ *
+ * Operations for interrupts targeting the same processor are serialized.
+ */
+struct intr_ops {
+    void (*enable)(void *priv, unsigned int intr, unsigned int cpu);
+    void (*disable)(void *priv, unsigned int intr);
+    void (*eoi)(void *priv, unsigned int intr);
+};
+
+/*
+ * Initialize the intr module.
+ */
+void intr_setup(void);
+
+/*
+ * Register an interrupt controller.
+ *
+ * This function isn't thread-safe and can only be called during system
+ * initialization.
+ */
+void intr_register_ctl(const struct intr_ops *ops, void *priv,
+                       unsigned int first_intr, unsigned int last_intr);
+
+/*
+ * Register/unregister an interrupt handler.
+ */
+int intr_register(unsigned int intr, intr_handler_fn_t fn, void *arg);
+void intr_unregister(unsigned int intr, intr_handler_fn_t fn);
+
+/*
+ * Handle an interrupt.
+ */
+void intr_handle(unsigned int intr);
+
+#endif /* _KERN_INTR_H */