1 files changed, 35 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/msi_bitmap.h b/arch/powerpc/include/asm/msi_bitmap.h
new file mode 100644
index 000000000000..97ac3f46ae0d
--- /dev/null
+++ b/arch/powerpc/include/asm/msi_bitmap.h
@@ -0,0 +1,35 @@
+#ifndef _POWERPC_SYSDEV_MSI_BITMAP_H
+#define _POWERPC_SYSDEV_MSI_BITMAP_H
+
+/*
+ * Copyright 2008, Michael Ellerman, IBM Corporation.
+ *
+ * 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; version 2 of the
+ * License.
+ *
+ */
+
+#include <linux/of.h>
+#include <asm/irq.h>
+
+struct msi_bitmap {
+        struct device_node      *of_node;
+        unsigned long           *bitmap;
+        spinlock_t              lock;
+        unsigned int            irq_count;
+};
+
+int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
+void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
+                            unsigned int num);
+void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);
+
+int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);
+
+int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
+                     struct device_node *of_node);
+void msi_bitmap_free(struct msi_bitmap *bmp);
+
+#endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */