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amd-iommu: add function to flush tlb for all domains
This function is required for suspend/resume support with AMD IOMMU enabled. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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2 changed files with 12 additions and 0 deletions
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@ -27,6 +27,7 @@ extern int amd_iommu_init(void);
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extern int amd_iommu_init_dma_ops(void);
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extern void amd_iommu_detect(void);
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extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
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extern void amd_iommu_flush_all_domains(void);
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#else
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static inline int amd_iommu_init(void) { return -ENODEV; }
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static inline void amd_iommu_detect(void) { }
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@ -449,6 +449,17 @@ static void iommu_flush_domain(u16 domid)
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}
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}
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void amd_iommu_flush_all_domains(void)
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{
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int i;
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for (i = 1; i < MAX_DOMAIN_ID; ++i) {
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if (!test_bit(i, amd_iommu_pd_alloc_bitmap))
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continue;
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iommu_flush_domain(i);
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}
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}
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/****************************************************************************
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*
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* The functions below are used the create the page table mappings for
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