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[Qemu-devel] [PATCH 01/13] driver core: Add iommu_group tracking to stru
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [PATCH 01/13] driver core: Add iommu_group tracking to struct device |
Date: |
Fri, 11 May 2012 16:55:35 -0600 |
User-agent: |
StGIT/0.14.3 |
IOMMU groups allow IOMMU drivers to represent DMA visibility
and isolation of devices. Multiple devices may be grouped
together for the purposes of DMA. Placing a pointer on
struct device enable easy access for things like streaming
DMA programming and drivers like VFIO.
Signed-off-by: Alex Williamson <address@hidden>
---
include/linux/device.h | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/include/linux/device.h b/include/linux/device.h
index 5ad17cc..13dd26b 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -35,6 +35,7 @@ struct subsys_private;
struct bus_type;
struct device_node;
struct iommu_ops;
+struct iommu_group;
struct bus_attribute {
struct attribute attr;
@@ -677,6 +678,7 @@ struct device {
const struct attribute_group **groups; /* optional groups */
void (*release)(struct device *dev);
+ struct iommu_group *iommu_group;
};
/* Get the wakeup routines, which depend on struct device */