1 files changed, 59 insertions, 0 deletions
diff --git a/arch/mips/include/asm/sn/io.h b/arch/mips/include/asm/sn/io.h
new file mode 100644
index 000000000000..24c6775fbb0f
--- /dev/null
+++ b/arch/mips/include/asm/sn/io.h
@@ -0,0 +1,59 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000, 2003 Ralf Baechle
+ * Copyright (C) 2000 Silicon Graphics, Inc.
+ */
+#ifndef _ASM_SN_IO_H
+#define _ASM_SN_IO_H
+
+#if defined(CONFIG_SGI_IP27)
+#include <asm/sn/sn0/hubio.h>
+#endif
+
+
+#define IIO_ITTE_BASE		0x400160 /* base of translation table entries */
+#define IIO_ITTE(bigwin)	(IIO_ITTE_BASE + 8*(bigwin))
+
+#define IIO_ITTE_OFFSET_BITS	5	/* size of offset field */
+#define IIO_ITTE_OFFSET_MASK	((1<<IIO_ITTE_OFFSET_BITS)-1)
+#define IIO_ITTE_OFFSET_SHIFT	0
+
+#define IIO_ITTE_WIDGET_BITS	4	/* size of widget field */
+#define IIO_ITTE_WIDGET_MASK	((1<<IIO_ITTE_WIDGET_BITS)-1)
+#define IIO_ITTE_WIDGET_SHIFT	8
+
+#define IIO_ITTE_IOSP		1	/* I/O Space bit */
+#define IIO_ITTE_IOSP_MASK	1
+#define IIO_ITTE_IOSP_SHIFT	12
+#define HUB_PIO_MAP_TO_MEM	0
+#define HUB_PIO_MAP_TO_IO	1
+
+#define IIO_ITTE_INVALID_WIDGET	3	/* an invalid widget  */
+
+#define IIO_ITTE_PUT(nasid, bigwin, io_or_mem, widget, addr) \
+	REMOTE_HUB_S((nasid), IIO_ITTE(bigwin), \
+		(((((addr) >> BWIN_SIZE_BITS) & \
+		   IIO_ITTE_OFFSET_MASK) << IIO_ITTE_OFFSET_SHIFT) | \
+		(io_or_mem << IIO_ITTE_IOSP_SHIFT) | \
+		(((widget) & IIO_ITTE_WIDGET_MASK) << IIO_ITTE_WIDGET_SHIFT)))
+
+#define IIO_ITTE_DISABLE(nasid, bigwin) \
+	IIO_ITTE_PUT((nasid), HUB_PIO_MAP_TO_MEM, \
+		     (bigwin), IIO_ITTE_INVALID_WIDGET, 0)
+
+#define IIO_ITTE_GET(nasid, bigwin) REMOTE_HUB_ADDR((nasid), IIO_ITTE(bigwin))
+
+/*
+ * Macro which takes the widget number, and returns the
+ * IO PRB address of that widget.
+ * value _x is expected to be a widget number in the range
+ * 0, 8 - 0xF
+ */
+#define	IIO_IOPRB(_x)	(IIO_IOPRB_0 + ( ( (_x) < HUB_WIDGET_ID_MIN ? \
+			(_x) : \
+			(_x) - (HUB_WIDGET_ID_MIN-1)) << 3) )
+
+#endif /* _ASM_SN_IO_H */