iommu/intel/perfmon.c

10 #include "iommu.h"
346 	struct intel_iommu *iommu = iommu_pmu->iommu;
375 	ecmd_submit_sync(iommu, DMA_ECMD_ENABLE, hwc->idx, 0);
383 	struct intel_iommu *iommu = iommu_pmu->iommu;
387 		ecmd_submit_sync(iommu, DMA_ECMD_DISABLE, hwc->idx, 0);
495 	struct intel_iommu *iommu = iommu_pmu->iommu;
497 	ecmd_submit_sync(iommu, DMA_ECMD_UNFREEZE, 0, 0);
503 	struct intel_iommu *iommu = iommu_pmu->iommu;
505 	ecmd_submit_sync(iommu, DMA_ECMD_FREEZE, 0, 0);
538 	struct intel_iommu *iommu = dev_id;
540 	if (!dmar_readl(iommu->reg + DMAR_PERFINTRSTS_REG))
543 	iommu_pmu_counter_overflow(iommu->pmu);
546 	dmar_writel(iommu->reg + DMAR_PERFINTRSTS_REG, DMA_PERFINTRSTS_PIS);
551 static int __iommu_pmu_register(struct intel_iommu *iommu)
553 	struct iommu_pmu *iommu_pmu = iommu->pmu;
555 	iommu_pmu->pmu.name		= iommu->name;
574 get_perf_reg_address(struct intel_iommu *iommu, u32 offset)
576 	u32 off = dmar_readl(iommu->reg + offset);
578 	return iommu->reg + off;
581 int alloc_iommu_pmu(struct intel_iommu *iommu)
588 	if (!ecap_pms(iommu->ecap))
592 	if (!cap_ecmds(iommu->cap))
595 	perfcap = dmar_readq(iommu->reg + DMAR_PERFCAP_REG);
609 	if (!ecmd_has_pmu_essential(iommu))
638 		pcap = dmar_readq(iommu->reg + DMAR_PERFEVNTCAP_REG +
662 	iommu_pmu->cfg_reg = get_perf_reg_address(iommu, DMAR_PERFCFGOFF_REG);
663 	iommu_pmu->cntr_reg = get_perf_reg_address(iommu, DMAR_PERFCNTROFF_REG);
664 	iommu_pmu->overflow = get_perf_reg_address(iommu, DMAR_PERFOVFOFF_REG);
708 	iommu_pmu->iommu = iommu;
709 	iommu->pmu = iommu_pmu;
725 void free_iommu_pmu(struct intel_iommu *iommu)
727 	struct iommu_pmu *iommu_pmu = iommu->pmu;
741 	iommu->pmu = NULL;
744 static int iommu_pmu_set_interrupt(struct intel_iommu *iommu)
746 	struct iommu_pmu *iommu_pmu = iommu->pmu;
749 	irq = dmar_alloc_hwirq(IOMMU_IRQ_ID_OFFSET_PERF + iommu->seq_id, iommu->node, iommu);
753 	snprintf(iommu_pmu->irq_name, sizeof(iommu_pmu->irq_name), "dmar%d-perf", iommu->seq_id);
755 	iommu->perf_irq = irq;
757 				   IRQF_ONESHOT, iommu_pmu->irq_name, iommu);
760 		iommu->perf_irq = 0;
766 static void iommu_pmu_unset_interrupt(struct intel_iommu *iommu)
768 	if (!iommu->perf_irq)
771 	free_irq(iommu->perf_irq, iommu);
772 	dmar_free_hwirq(iommu->perf_irq);
773 	iommu->perf_irq = 0;
830 					      "driver/iommu/intel/perfmon:online",
859 void iommu_pmu_register(struct intel_iommu *iommu)
861 	struct iommu_pmu *iommu_pmu = iommu->pmu;
866 	if (__iommu_pmu_register(iommu))
873 	if (iommu_pmu_set_interrupt(iommu))
883 	pr_err("Failed to register PMU for iommu (seq_id = %d)\n", iommu->seq_id);
884 	free_iommu_pmu(iommu);
887 void iommu_pmu_unregister(struct intel_iommu *iommu)
889 	struct iommu_pmu *iommu_pmu = iommu->pmu;
894 	iommu_pmu_unset_interrupt(iommu);