From d586d7852ccd0cecb502bf4809f827e60c486af0 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Thu, 3 Sep 2009 15:39:23 +0200 Subject: [PATCH] x86/amd-iommu: Add function to flush all DTEs on one IOMMU This function flushes all DTE entries on one IOMMU for all devices behind this IOMMU. This is required for command buffer resetting later. Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 64cc582..2dc0933 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -516,6 +516,19 @@ void amd_iommu_flush_all_domains(void) flush_all_domains_on_iommu(iommu); } +static void flush_all_devices_for_iommu(struct amd_iommu *iommu) +{ + int i; + + for (i = 0; i <= amd_iommu_last_bdf; ++i) { + if (iommu != amd_iommu_rlookup_table[i]) + continue; + + iommu_queue_inv_dev_entry(iommu, i); + iommu_completion_wait(iommu); + } +} + void amd_iommu_flush_all_devices(void) { struct amd_iommu *iommu; -- 2.7.4