1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/staging/meilhaus/me0600_ext_irq.h b/drivers/staging/meilhaus/me0600_ext_irq.h
new file mode 100644
index 000000000000..f5f2204b49a0
--- /dev/null
+++ b/drivers/staging/meilhaus/me0600_ext_irq.h
@@ -0,0 +1,58 @@
+/**
+ * @file me0600_ext_irq.h
+ *
+ * @brief ME-630 external interrupt implementation.
+ * @note Copyright (C) 2006 Meilhaus Electronic GmbH (support@meilhaus.de)
+ * @author Guenter Gebhardt
+ */
+
+#ifndef _ME0600_EXT_IRQ_H_
+#define _ME0600_EXT_IRQ_H_
+
+#include <linux/sched.h>
+
+#include "mesubdevice.h"
+#include "meslock.h"
+
+#ifdef __KERNEL__
+
+/**
+ * @brief The ME-630 external interrupt subdevice class.
+ */
+typedef struct me0600_ext_irq_subdevice {
+	/* Inheritance */
+	me_subdevice_t base;			/**< The subdevice base class. */
+
+	/* Attributes */
+	spinlock_t subdevice_lock;		/**< Spin lock to protect the subdevice from concurrent access. */
+	spinlock_t *intcsr_lock;		/**< Spin lock to protect #intcsr. */
+
+	wait_queue_head_t wait_queue;		/**< Queue to put on threads waiting for an interrupt. */
+
+	int irq;				/**< The irq number assigned by PCI BIOS. */
+	int rised;				/**< If true an interrupt has occured. */
+	unsigned int n;				/**< The number of interrupt since the driver was loaded. */
+	unsigned int lintno;			/**< The number of the local PCI interrupt. */
+
+	uint32_t intcsr;			/**< The PLX interrupt control and status register. */
+	uint32_t reset_reg;			/**< The control register. */
+} me0600_ext_irq_subdevice_t;
+
+/**
+ * @brief The constructor to generate a ME-630 external interrupt instance.
+ *
+ * @param plx_reg_base The register base address of the PLX chip as returned by the PCI BIOS.
+ * @param me0600_reg_base The register base address of the ME-630 device as returned by the PCI BIOS.
+ * @param irq The irq assigned by the PCI BIOS.
+ *
+ * @return Pointer to new instance on success.\n
+ * NULL on error.
+ */
+me0600_ext_irq_subdevice_t *me0600_ext_irq_constructor(uint32_t plx_reg_base,
+						       uint32_t me0600_reg_base,
+						       spinlock_t * intcsr_lock,
+						       unsigned int ext_irq_idx,
+						       int irq);
+
+#endif
+#endif