On 05.05.17 17:38:05, Geetha sowjanya wrote: > From: Linu Cherian <linu.cherian@xxxxxxxxxx> > > Cavium ThunderX2 SMMU implementation doesn't support page 1 register space > and PAGE0_REGS_ONLY option will be enabled as an errata workaround. > > This option when turned on, replaces all page 1 offsets used for > EVTQ_PROD/CONS, PRIQ_PROD/CONS register access with page 0 offsets. > > Signed-off-by: Linu Cherian <linu.cherian@xxxxxxxxxx> > Signed-off-by: Geetha Sowjanya <geethasowjanya.akula@xxxxxxxxxx> > --- > .../devicetree/bindings/iommu/arm,smmu-v3.txt | 6 +++ > drivers/iommu/arm-smmu-v3.c | 44 ++++++++++++++++------ > 2 files changed, 38 insertions(+), 12 deletions(-) > @@ -1995,8 +2011,10 @@ static int arm_smmu_init_queues(struct arm_smmu_device *smmu) > if (!(smmu->features & ARM_SMMU_FEAT_PRI)) > return 0; > > - return arm_smmu_init_one_queue(smmu, &smmu->priq.q, ARM_SMMU_PRIQ_PROD, > - ARM_SMMU_PRIQ_CONS, PRIQ_ENT_DWORDS); > + return arm_smmu_init_one_queue(smmu, &smmu->priq.q, > + ARM_SMMU_PRIQ_PROD(smmu), > + ARM_SMMU_PRIQ_CONS(smmu), > + PRIQ_ENT_DWORDS); I would also suggest Robin's idea from the v1 review here. This works if we rework arm_smmu_init_one_queue() to pass addresses instead of offsets. This would make these widespread offset calculations obsolete. -Robert -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
