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authorOhad Ben-Cohen <ohad@wizery.com>2011-10-13 12:53:18 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-10-17 09:13:42 +0100
commitcfb470b336f8bb69150697bde1316cf5fdad08fc (patch)
treec522a64bef4077557179b1f07823672c5f65e017 /arch
parent01885bc5ce5a58e043e00f3f295301ef1b9a0fc4 (diff)
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/include/asm/device.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/device.h b/arch/arm/include/asm/device.h
index 9f390ce335c..6615f03f56a 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 {