From cfb470b336f8bb69150697bde1316cf5fdad08fc Mon Sep 17 00:00:00 2001
From: Ohad Ben-Cohen <ohad@wizery.com>
Date: Thu, 13 Oct 2011 12:53:18 +0100
Subject: [PATCH] ARM: 7130/1: dev_archdata: add private iommu extension
Add a private iommu pointer to the ARM-specific arch data in the
device struct, which will be used to attach iommu-specific data
to devices which require iommu support.
Different iommu implementations (on different platforms) will attach
different types of data to this pointer, so 'void *' is currently used
(the downside is reduced typesafety).
Note: ia64, x86 and sparc have this exact iommu extension as well, and
if others are likely to adopt it too, we might want to consider
adding this to the device struct itself directly.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
arch/arm/include/asm/device.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/include/asm/device.h b/arch/arm/include/asm/device.h
index 9f390ce335cb0..6615f03f56a55 100644
--- a/arch/arm/include/asm/device.h
+++ b/arch/arm/include/asm/device.h
@@ -10,6 +10,9 @@ struct dev_archdata {
#ifdef CONFIG_DMABOUNCE
struct dmabounce_device_info *dmabounce;
#endif
+#ifdef CONFIG_IOMMU_API
+ void *iommu; /* private IOMMU data */
+#endif
};
struct pdev_archdata {