From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Auger Subject: [RFC v2 3/4] iommu/arm-smmu-v3: Add hypothetical caching mode model Date: Fri, 11 Aug 2017 15:45:29 +0200 Message-ID: <1502459130-6234-4-git-send-email-eric.auger@redhat.com> References: <1502459130-6234-1-git-send-email-eric.auger@redhat.com> Return-path: In-Reply-To: <1502459130-6234-1-git-send-email-eric.auger@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: eric.auger.pro@gmail.com, eric.auger@redhat.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Will.Deacon@arm.com, robin.murphy@arm.com, Jean-Philippe.Brucker@arm.com Cc: christoffer.dall@linaro.org, Marc.Zyngier@arm.com, alex.williamson@redhat.com, peterx@redhat.com, mst@redhat.com, tn@semihalf.com, bharat.bhushan@nxp.com List-Id: iommu@lists.linux-foundation.org Let's add an hypothetical "caching mode" smmuv3 model (not yet discussed for IORT spec) and enable the TLBI_ON_MAP option for this latter. Signed-off-by: Eric Auger --- drivers/iommu/arm-smmu-v3.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 690247b..a1c10af 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -422,6 +422,10 @@ #define ACPI_IORT_SMMU_V3_CAVIUM_CN99XX 0x2 #endif +#ifndef ACPI_IORT_SMMU_V3_CACHING_MODE +#define ACPI_IORT_SMMU_V3_CACHING_MODE 0x3 +#endif + static bool disable_bypass; module_param_named(disable_bypass, disable_bypass, bool, S_IRUGO); MODULE_PARM_DESC(disable_bypass, @@ -2673,6 +2677,9 @@ static void acpi_smmu_get_options(u32 model, struct arm_smmu_device *smmu) case ACPI_IORT_SMMU_HISILICON_HI161X: smmu->options |= ARM_SMMU_OPT_SKIP_PREFETCH; break; + case ACPI_IORT_SMMU_V3_CACHING_MODE: + smmu->options |= ARM_SMMU_OPT_TLBI_ON_MAP; + break; } dev_notice(smmu->dev, "option mask 0x%x\n", smmu->options); -- 2.5.5