[PATCH 2/5 v10] powerpc: Add iommu domain pointer to device archdata

From: Varun Sethi
Date: Fri Mar 22 2013 - 18:43:31 EST

Add an iommu domain pointer to device (powerpc) archdata. Devices
are attached to iommu domains and this pointer provides a mechanism
to correlate between a device and the associated iommu domain. This
field is set when a device is attached to a domain.

Signed-off-by: Varun Sethi <Varun.Sethi@xxxxxxxxxxxxx>
- no change in v10.
- Added CONFIG_IOMMU_API in v9.

arch/powerpc/include/asm/device.h | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h
index 77e97dd..2d5c1c5 100644
--- a/arch/powerpc/include/asm/device.h
+++ b/arch/powerpc/include/asm/device.h
@@ -28,6 +28,12 @@ struct dev_archdata {
void *iommu_table_base;
} dma_data;

+ /* IOMMU domain information pointer. This would be set
+ * when this device is attached to an iommu_domain.
+ */
+ void *iommu_domain;
dma_addr_t max_direct_dma_addr;

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