linux-kernel - [PATCH v1 2/4] iommu/arm-smmu-v3: Share arm_smmu_cmdq_issue_cmd_with

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Message-ID: <e9e8df0b9dadfb8c716b8b9072657327ab14898c.1741150594.git.nicolinc@nvidia.com>
Date: Tue, 4 Mar 2025 21:04:01 -0800
From: Nicolin Chen <nicolinc@...dia.com>
To: <will@...nel.org>, <robin.murphy@....com>, <jgg@...dia.com>
CC: <joro@...tes.org>, <linux-arm-kernel@...ts.infradead.org>,
	<iommu@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
	<shameerali.kolothum.thodi@...wei.com>
Subject: [PATCH v1 2/4] iommu/arm-smmu-v3: Share arm_smmu_cmdq_issue_cmd_with_sync() with vsmmu

Allow arm-smmu-v3-iommufd to call it for S2 cache invalidations.

Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 ++
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
index e08c4ede4b2d..3336d196062c 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
@@ -984,6 +984,8 @@ void arm_smmu_install_ste_for_dev(struct arm_smmu_master *master,
 int arm_smmu_cmdq_issue_cmdlist(struct arm_smmu_device *smmu,
 				struct arm_smmu_cmdq *cmdq, u64 *cmds, int n,
 				bool sync);
+int arm_smmu_cmdq_issue_cmd_with_sync(struct arm_smmu_device *smmu,
+				      struct arm_smmu_cmdq_ent *ent);
 
 #ifdef CONFIG_ARM_SMMU_V3_SVA
 bool arm_smmu_sva_supported(struct arm_smmu_device *smmu);
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 310bb4109ec9..0462eb1b2912 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -929,8 +929,8 @@ static int arm_smmu_cmdq_issue_cmd(struct arm_smmu_device *smmu,
 	return __arm_smmu_cmdq_issue_cmd(smmu, ent, false);
 }
 
-static int arm_smmu_cmdq_issue_cmd_with_sync(struct arm_smmu_device *smmu,
-					     struct arm_smmu_cmdq_ent *ent)
+int arm_smmu_cmdq_issue_cmd_with_sync(struct arm_smmu_device *smmu,
+				      struct arm_smmu_cmdq_ent *ent)
 {
 	return __arm_smmu_cmdq_issue_cmd(smmu, ent, true);
 }
-- 
2.43.0