Add first ver (very) untested skel for AT91 timer.

[bertos.git] / drv / at91 / sysirq.h

diff --git a/drv/at91/sysirq.h b/drv/at91/sysirq.h
new file mode 100755 (executable)
index 0000000..f58c253
--- /dev/null
+++ b/drv/at91/sysirq.h
@@ -0,0 +1,49 @@
+/**
+ * \file
+ * <!--
+ * Copyright 2007 Develer S.r.l. (http://www.develer.com/)
+ * This file is part of DevLib - See README.devlib for information.
+ * -->
+ *
+ * \version $Id$
+ *
+ * \author Francesco Sacchi <batt@develer.com>
+ *
+ * \brief System irq handler for Atmel AT91 ARM7 processors (interface).
+ */
+
+#ifndef DRV_AT91_SYSIRQ_H
+#define DRV_AT91_SYSIRQ_H
+
+typedef void (* sysirq_handler_t)(void);   ///< Type for system irq handler.
+typedef void (* sysirq_setEnable_t)(bool); ///< Type for system irq enable/disable function.
+typedef bool (* sysirq_enable_t)(void);    ///< Type for system irq enable getter.
+typedef bool (* sysirq_trigger_t)(void);   ///< Type for system irq trigger getter.
+
+/**
+ * Structure used to define a system interrupt source.
+ */
+typedef struct SysIrq
+{
+       sysirq_enable_t enable;       ///< Getter for irq enable/disable state.
+       sysirq_trigger_t trigger;     ///< Getter for irq trigger state.
+       sysirq_setEnable_t setEnable; ///< Setter for irq enable/disable state.
+       sysirq_handler_t handler;     ///< IRQ handler.
+} SysIrq;
+
+/**
+ * System IRQ ID list.
+ */
+typedef enum sysirq_t
+{
+       SYSIRQ_PIT, ///< Periodic Interval Timer
+       /* TODO: add all system irqs */
+       SYSIRQ_CNT
+} sysirq_t;
+
+void sysirq_init(void);
+void sysirq_setHandler(sysirq_t irq, sysirq_handler_t handler);
+void sysirq_setEnable(sysirq_t irq, bool enable);
+bool sysirq_enable(sysirq_t irq);
+
+#endif /* ARCH_ARM_SYSIRQ_H */