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authorJoerg Roedel <joerg.roedel@amd.com>2008-12-02 23:01:12 +0300
committerJoerg Roedel <joerg.roedel@amd.com>2009-01-03 16:11:54 +0300
commit43f4960983a309568a6c4375f081e63fb2ff24a3 (patch)
tree44291b360182d0f2e6ca2fa8958476788fa0345d /arch
parent9e919012e33c481991e46aa4cb13d807cd47b798 (diff)
downloadlinux-43f4960983a309568a6c4375f081e63fb2ff24a3.tar.xz
AMD IOMMU: add iommu_flush_domain function
Impact: add a function to flush a domain id on every IOMMU Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/amd_iommu.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index b7b3067630cf..2b6b8e050bd8 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -352,6 +352,30 @@ static void iommu_flush_tlb(struct amd_iommu *iommu, u16 domid)
iommu_queue_inv_iommu_pages(iommu, address, domid, 0, 1);
}
+#ifdef CONFIG_IOMMU_API
+/*
+ * This function is used to flush the IO/TLB for a given protection domain
+ * on every IOMMU in the system
+ */
+static void iommu_flush_domain(u16 domid)
+{
+ unsigned long flags;
+ struct amd_iommu *iommu;
+ struct iommu_cmd cmd;
+
+ __iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
+ domid, 1, 1);
+
+ list_for_each_entry(iommu, &amd_iommu_list, list) {
+ spin_lock_irqsave(&iommu->lock, flags);
+ __iommu_queue_command(iommu, &cmd);
+ __iommu_completion_wait(iommu);
+ __iommu_wait_for_completion(iommu);
+ spin_unlock_irqrestore(&iommu->lock, flags);
+ }
+}
+#endif
+
/****************************************************************************
*
* The functions below are used the create the page table mappings for