x86/amd-iommu: Use dev->arch->iommu to store iommu related information
This patch changes IOMMU code to use dev->archdata->iommu to
store information about the alias device and the domain the
device is attached to.
This allows the driver to get rid of the amd_iommu_pd_table
in the future.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h
index 02b6a0f..9eaa27b 100644
--- a/arch/x86/include/asm/amd_iommu_types.h
+++ b/arch/x86/include/asm/amd_iommu_types.h
@@ -248,6 +248,14 @@
};
/*
+ * This struct contains device specific data for the IOMMU
+ */
+struct iommu_dev_data {
+ struct device *alias; /* The Alias Device */
+ struct protection_domain *domain; /* Domain the device is bound to */
+};
+
+/*
* For dynamic growth the aperture size is split into ranges of 128MB of
* DMA address space each. This struct represents one such range.
*/
diff --git a/arch/x86/include/asm/device.h b/arch/x86/include/asm/device.h
index cee34e9..029f230 100644
--- a/arch/x86/include/asm/device.h
+++ b/arch/x86/include/asm/device.h
@@ -8,7 +8,7 @@
#ifdef CONFIG_X86_64
struct dma_map_ops *dma_ops;
#endif
-#ifdef CONFIG_DMAR
+#if defined(CONFIG_DMAR) || defined(CONFIG_AMD_IOMMU)
void *iommu; /* hook for IOMMU specific extension */
#endif
};
