From 400a28a05f2cc1a311acb4ff6ac64d8402d21678 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Mon, 28 Nov 2011 15:11:02 +0100 Subject: 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 --- drivers/iommu/amd_iommu_types.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/iommu/amd_iommu_types.h') diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index a6e1dc6..7e81094 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -414,6 +414,9 @@ struct amd_iommu { /* Extended features */ u64 features; + /* IOMMUv2 */ + bool is_iommu_v2; + /* * Capability pointer. There could be more than one IOMMU per PCI * device function if there are more than one AMD IOMMU capability @@ -570,6 +573,8 @@ extern bool amd_iommu_unmap_flush; /* Smallest number of PASIDs supported by any IOMMU in the system */ extern u32 amd_iommu_max_pasids; +extern bool amd_iommu_v2_present; + /* takes bus and device/function and returns the device id * FIXME: should that be in generic PCI code? */ static inline u16 calc_devid(u8 bus, u8 devfn) -- cgit v1.1