On Thu 10 Jun 16:44 CDT 2021, Rob Clark wrote: > From: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx> > > Call report_iommu_fault() to allow upper-level drivers to register their > own fault handlers. > > Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx> > Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx> > Acked-by: Will Deacon <will@xxxxxxxxxx> Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Regards, Bjorn > --- > drivers/iommu/arm/arm-smmu/arm-smmu.c | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c > index 6f72c4d208ca..b4b32d31fc06 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c > @@ -408,6 +408,7 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) > struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); > struct arm_smmu_device *smmu = smmu_domain->smmu; > int idx = smmu_domain->cfg.cbndx; > + int ret; > > fsr = arm_smmu_cb_read(smmu, idx, ARM_SMMU_CB_FSR); > if (!(fsr & ARM_SMMU_FSR_FAULT)) > @@ -417,8 +418,12 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) > iova = arm_smmu_cb_readq(smmu, idx, ARM_SMMU_CB_FAR); > cbfrsynra = arm_smmu_gr1_read(smmu, ARM_SMMU_GR1_CBFRSYNRA(idx)); > > - dev_err_ratelimited(smmu->dev, > - "Unhandled context fault: fsr=0x%x, iova=0x%08lx, fsynr=0x%x, cbfrsynra=0x%x, cb=%d\n", > + ret = report_iommu_fault(domain, NULL, iova, > + fsynr & ARM_SMMU_FSYNR0_WNR ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ); > + > + if (ret == -ENOSYS) > + dev_err_ratelimited(smmu->dev, > + "Unhandled context fault: fsr=0x%x, iova=0x%08lx, fsynr=0x%x, cbfrsynra=0x%x, cb=%d\n", > fsr, iova, fsynr, cbfrsynra, idx); > > arm_smmu_cb_write(smmu, idx, ARM_SMMU_CB_FSR, fsr); > -- > 2.31.1 > > _______________________________________________ > iommu mailing list > iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linuxfoundation.org/mailman/listinfo/iommu
