Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Sender: saiprakash.ranjan=codeaurora.org@mg.codeaurora.org
DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2D852C43460
From:   Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To:     Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>,
        Joerg Roedel <joro@8bytes.org>
Cc:     iommu@lists.linux-foundation.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-arm-msm@vger.kernel.org,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Douglas Anderson <dianders@chromium.org>,
        Krishna Reddy <vdumpa@nvidia.com>,
        Thierry Reding <treding@nvidia.com>,
        Tomasz Figa <tfiga@chromium.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Subject: [PATCHv2 3/3] iommu/arm-smmu-qcom: Set IO_PGTABLE_QUIRK_TLB_INV_ALL for QTI SoC impl
Date:   Fri, 18 Jun 2021 08:21:05 +0530
Message-Id: <eaf513a8d4726c453f981504625e47141c56b000.1623981933.git.saiprakash.ranjan@codeaurora.org>
In-Reply-To: <cover.1623981933.git.saiprakash.ranjan@codeaurora.org>
References: <cover.1623981933.git.saiprakash.ranjan@codeaurora.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Set the pgtable quirk IO_PGTABLE_QUIRK_TLB_INV_ALL for QTI SoC
implementation to use ::tlb_flush_all() for partial walk flush
to improve unmap performance.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
---
 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index 7771d40176de..b8ae51592d00 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -146,6 +146,8 @@ static int qcom_adreno_smmu_init_context(struct arm_smmu_domain *smmu_domain,
 {
 	struct adreno_smmu_priv *priv;
 
+	pgtbl_cfg->quirks |= IO_PGTABLE_QUIRK_TLB_INV_ALL;
+
 	/* Only enable split pagetables for the GPU device (SID 0) */
 	if (!qcom_adreno_smmu_is_gpu_device(dev))
 		return 0;
@@ -185,6 +187,14 @@ static const struct of_device_id qcom_smmu_client_of_match[] __maybe_unused = {
 	{ }
 };
 
+static int qcom_smmu_init_context(struct arm_smmu_domain *smmu_domain,
+		struct io_pgtable_cfg *pgtbl_cfg, struct device *dev)
+{
+	pgtbl_cfg->quirks |= IO_PGTABLE_QUIRK_TLB_INV_ALL;
+
+	return 0;
+}
+
 static int qcom_smmu_cfg_probe(struct arm_smmu_device *smmu)
 {
 	unsigned int last_s2cr = ARM_SMMU_GR0_S2CR(smmu->num_mapping_groups - 1);
@@ -308,6 +318,7 @@ static int qcom_smmu500_reset(struct arm_smmu_device *smmu)
 }
 
 static const struct arm_smmu_impl qcom_smmu_impl = {
+	.init_context = qcom_smmu_init_context,
 	.cfg_probe = qcom_smmu_cfg_probe,
 	.def_domain_type = qcom_smmu_def_domain_type,
 	.reset = qcom_smmu500_reset,
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation