lkml.org 
[lkml]   [2009]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5/9] amd-iommu: add function to disable all iommus
Date
[ impact: add disable_iommus function needed for suspend/resume ]

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kernel/amd_iommu_init.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index feee475..ed10c0f 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -252,6 +252,11 @@ static void __init iommu_enable(struct amd_iommu *iommu)
iommu_feature_enable(iommu, CONTROL_IOMMU_EN);
}

+static void iommu_disable(struct amd_iommu *iommu)
+{
+ iommu_feature_disable(iommu, CONTROL_IOMMU_EN);
+}
+
/*
* mapping and unmapping functions for the IOMMU MMIO space. Each AMD IOMMU in
* the system has one.
@@ -945,6 +950,14 @@ static void __init enable_iommus(void)
}
}

+static void disable_iommus(void)
+{
+ struct amd_iommu *iommu;
+
+ for_each_iommu(iommu)
+ iommu_disable(iommu);
+}
+
/*
* Suspend/Resume support
* disable suspend until real resume implemented
--
1.6.3.1



\
 
 \ /
  Last update: 2009-05-22 14:21    [W:0.051 / U:0.260 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site