Add a simple library for accessing i/o ports and memory on the alpha.

This is only intended for use by the X server.

1 files changed, 48 insertions, 0 deletions

diff --git a/lib/libio/io.h b/lib/libio/io.h
new file mode 100644
index 000000000000..a166355612ea
--- /dev/null
+++ b/lib/libio/io.h
@@ -0,0 +1,48 @@
+/*-
+ * Copyright (c) 1998 Doug Rabson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$Id$
+ */
+
+struct io_ops {
+    int		(*ioperm)(u_int32_t, u_int32_t, int);
+    u_int8_t	(*inb)(u_int32_t);
+    u_int16_t	(*inw)(u_int32_t);
+    u_int32_t	(*inl)(u_int32_t);
+    void	(*outb)(u_int32_t, u_int8_t);
+    void	(*outw)(u_int32_t, u_int16_t);
+    void	(*outl)(u_int32_t, u_int32_t);
+    void *	(*map_memory)(u_int32_t, u_int32_t);
+    void	(*unmap_memory)(void *, u_int32_t);
+    u_int8_t	(*readb)(void *, u_int32_t);
+    u_int16_t	(*readw)(void *, u_int32_t);
+    u_int32_t	(*readl)(void *, u_int32_t);
+    void	(*writeb)(void *, u_int32_t, u_int8_t);
+    void	(*writew)(void *, u_int32_t, u_int16_t);
+    void	(*writel)(void *, u_int32_t, u_int32_t);
+};
+
+extern struct io_ops swiz_io_ops;
+extern struct io_ops bwx_io_ops;