From: Alex Williamson Date: Wed, 30 May 2012 20:18:41 +0000 (-0600) Subject: driver core: Add iommu_group tracking to struct device X-Git-Tag: firefly_0821_release~3680^2~2367^2^4~6 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=74416e1e07660798379ce10a210bf4fd35b84f9f;p=firefly-linux-kernel-4.4.55.git driver core: Add iommu_group tracking to struct device 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 Acked-by: Greg Kroah-Hartman Acked-by: Benjamin Herrenschmidt Signed-off-by: Joerg Roedel --- diff --git a/include/linux/device.h b/include/linux/device.h index 161d96241b1b..d0e4d99405ae 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -36,6 +36,7 @@ struct subsys_private; struct bus_type; struct device_node; struct iommu_ops; +struct iommu_group; struct bus_attribute { struct attribute attr; @@ -687,6 +688,7 @@ 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 */