Trimming CC list for very minor suggestions (feel free to ignore). On 15/04/2019 10:07, Vivek Gautam wrote: > Extract the SID and add the information to context fault log. > This is specially useful in a distributed smmu architecture > where multiple masters are connected to smmu. SID information > helps to quickly identify the faulting master device. I find it slightly clearer to keep acronyms capitalized, such as SMMU. > @@ -575,7 +575,10 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) > struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); > struct arm_smmu_cfg *cfg = &smmu_domain->cfg; > struct arm_smmu_device *smmu = smmu_domain->smmu; > + void __iomem *gr1_base = ARM_SMMU_GR1(smmu); > void __iomem *cb_base; > + u32 cbfrsynra; > + u16 sid; > > cb_base = ARM_SMMU_CB(smmu, cfg->cbndx); > fsr = readl_relaxed(cb_base + ARM_SMMU_CB_FSR); > @@ -586,9 +589,16 @@ static irqreturn_t arm_smmu_context_fault(int irq, void *dev) > fsynr = readl_relaxed(cb_base + ARM_SMMU_CB_FSYNR0); > iova = readq_relaxed(cb_base + ARM_SMMU_CB_FAR); > > + cbfrsynra = readl_relaxed(gr1_base + > + ARM_SMMU_GR1_CBFRSYNRA(cfg->cbndx)); I find it slightly clearer to write void __iomem *reg; ... reg = ARM_SMMU_GR1(smmu) + ARM_SMMU_GR1_CBFRSYNRA(cfg->cbndx); cbfrsynra = readl_relaxed(reg); Regards.
