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x86/amd-iommu: Use threaded interupt handler
Move the interupt handling for the iommu into the interupt thread to reduce latencies and prepare interupt handling for pri handling. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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parent
604c307bf4
commit
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3 changed files with 12 additions and 5 deletions
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@ -23,6 +23,7 @@
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extern int amd_iommu_init_dma_ops(void);
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extern int amd_iommu_init_dma_ops(void);
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extern int amd_iommu_init_passthrough(void);
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extern int amd_iommu_init_passthrough(void);
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extern irqreturn_t amd_iommu_int_thread(int irq, void *data);
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extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
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extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
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extern void amd_iommu_apply_erratum_63(u16 devid);
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extern void amd_iommu_apply_erratum_63(u16 devid);
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extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
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extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu);
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@ -366,7 +366,7 @@ static void iommu_poll_events(struct amd_iommu *iommu)
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spin_unlock_irqrestore(&iommu->lock, flags);
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spin_unlock_irqrestore(&iommu->lock, flags);
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}
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}
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irqreturn_t amd_iommu_int_handler(int irq, void *data)
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irqreturn_t amd_iommu_int_thread(int irq, void *data)
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{
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{
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struct amd_iommu *iommu;
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struct amd_iommu *iommu;
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@ -376,6 +376,11 @@ irqreturn_t amd_iommu_int_handler(int irq, void *data)
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return IRQ_HANDLED;
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return IRQ_HANDLED;
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}
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}
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irqreturn_t amd_iommu_int_handler(int irq, void *data)
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{
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return IRQ_WAKE_THREAD;
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}
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/****************************************************************************
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/****************************************************************************
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*
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*
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* IOMMU command queuing functions
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* IOMMU command queuing functions
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@ -1034,10 +1034,11 @@ static int iommu_setup_msi(struct amd_iommu *iommu)
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if (pci_enable_msi(iommu->dev))
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if (pci_enable_msi(iommu->dev))
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return 1;
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return 1;
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r = request_irq(iommu->dev->irq, amd_iommu_int_handler,
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r = request_threaded_irq(iommu->dev->irq,
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IRQF_SAMPLE_RANDOM,
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amd_iommu_int_handler,
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"AMD-Vi",
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amd_iommu_int_thread,
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NULL);
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0, "AMD-Vi",
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iommu->dev);
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if (r) {
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if (r) {
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pci_disable_msi(iommu->dev);
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pci_disable_msi(iommu->dev);
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