summaryrefslogtreecommitdiff
path: root/drivers/iommu/amd_iommu_proto.h
diff options
context:
space:
mode:
authorJoerg Roedel <joerg.roedel@amd.com>2011-11-28 18:11:02 +0400
committerJoerg Roedel <joerg.roedel@amd.com>2011-12-12 17:54:52 +0400
commit400a28a05f2cc1a311acb4ff6ac64d8402d21678 (patch)
tree4dca7cd2b8610ca0bb5ea7a7df4a0af995aa733b /drivers/iommu/amd_iommu_proto.h
parentcbc33a9085995e21f52a66380d108d64916b6787 (diff)
downloadlinux-400a28a05f2cc1a311acb4ff6ac64d8402d21678.tar.xz
iommu/amd: Add iommuv2 flag to struct amd_iommu
In mixed IOMMU setups this flag inidicates whether an IOMMU supports the v2 features or not. This patch also adds a global flag together with a function to query that flag from other code. The flag shows if at least one IOMMUv2 is in the system. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/amd_iommu_proto.h')
-rw-r--r--drivers/iommu/amd_iommu_proto.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_proto.h b/drivers/iommu/amd_iommu_proto.h
index 7ffaa64410b0..3a46c300dffb 100644
--- a/drivers/iommu/amd_iommu_proto.h
+++ b/drivers/iommu/amd_iommu_proto.h
@@ -31,6 +31,9 @@ extern int amd_iommu_init_devices(void);
extern void amd_iommu_uninit_devices(void);
extern void amd_iommu_init_notifier(void);
extern void amd_iommu_init_api(void);
+
+extern bool amd_iommu_v2_supported(void);
+
#ifndef CONFIG_AMD_IOMMU_STATS
static inline void amd_iommu_stats_init(void) { }