From 765b6a98c1de3d84dfdae344cc4ee4c24d9447f7 Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Mon, 10 Dec 2018 09:58:55 +0800 Subject: iommu/vt-d: Enumerate the scalable mode capability The Intel vt-d spec rev3.0 introduces a new translation mode called scalable mode, which enables PASID-granular translations for first level, second level, nested and pass-through modes. At the same time, the previous Extended Context (ECS) mode is deprecated (no production ever implements ECS). This patch adds enumeration for Scalable Mode and removes the deprecated ECS enumeration. It provides a boot time option to disable scalable mode even hardware claims to support it. Cc: Ashok Raj Cc: Jacob Pan Cc: Kevin Tian Signed-off-by: Sanjay Kumar Signed-off-by: Liu Yi L Signed-off-by: Lu Baolu Reviewed-by: Ashok Raj Reviewed-by: Kevin Tian Signed-off-by: Joerg Roedel --- include/linux/intel-iommu.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index a58bc05d6798..8c9b6063d275 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -177,6 +177,7 @@ * Extended Capability Register */ +#define ecap_smts(e) (((e) >> 43) & 0x1) #define ecap_dit(e) ((e >> 41) & 0x1) #define ecap_pasid(e) ((e >> 40) & 0x1) #define ecap_pss(e) ((e >> 35) & 0x1f) -- cgit