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Diffstat (limited to 'arch/mn10300/unit-asb2305/pci-iomap.c')
-rw-r--r--arch/mn10300/unit-asb2305/pci-iomap.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/mn10300/unit-asb2305/pci-iomap.c b/arch/mn10300/unit-asb2305/pci-iomap.c
new file mode 100644
index 000000000000..dbceae4307da
--- /dev/null
+++ b/arch/mn10300/unit-asb2305/pci-iomap.c
@@ -0,0 +1,31 @@
+/* ASB2305 PCI I/O mapping handler
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/pci.h>
+#include <linux/module.h>
+
+/*
+ * Create a virtual mapping cookie for a PCI BAR (memory or IO)
+ */
+void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
+{
+ unsigned long start = pci_resource_start(dev, bar);
+ unsigned long len = pci_resource_len(dev, bar);
+ unsigned long flags = pci_resource_flags(dev, bar);
+
+ if (!len || !start)
+ return NULL;
+
+ if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM))
+ return (void __iomem *) start;
+
+ return NULL;
+}
+EXPORT_SYMBOL(pci_iomap);