Linux Tegra architecture development
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From: Nicolin Chen <nicolinc@nvidia.com>
To: <will@kernel.org>
Cc: <robin.murphy@arm.com>, <joro@8bytes.org>, <jgg@nvidia.com>,
	<thierry.reding@gmail.com>, <vdumpa@nvidia.com>,
	<jonathanh@nvidia.com>, <linux-kernel@vger.kernel.org>,
	<iommu@lists.linux.dev>, <linux-arm-kernel@lists.infradead.org>,
	<linux-tegra@vger.kernel.org>
Subject: [PATCH v13 02/10] iommu/arm-smmu-v3: Pass in cmdq pointer to arm_smmu_cmdq_build_sync_cmd
Date: Fri, 23 Aug 2024 17:10:36 -0700	[thread overview]
Message-ID: <50bd0237e8399496955c2db2c8fde5bb0c564343.1724453781.git.nicolinc@nvidia.com> (raw)
In-Reply-To: <cover.1724453781.git.nicolinc@nvidia.com>

The CMDQV extension on NVIDIA Tegra241 SoC only supports CS_NONE in the
CS field of CMD_SYNC, v.s. standard SMMU CMDQ. Pass in the cmdq pointer
directly, so the function can identify a different cmdq implementation.

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

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 ebd1a808a2cc..43ce8b9a517f 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -352,8 +352,9 @@ static struct arm_smmu_cmdq *arm_smmu_get_cmdq(struct arm_smmu_device *smmu)
 }
 
 static void arm_smmu_cmdq_build_sync_cmd(u64 *cmd, struct arm_smmu_device *smmu,
-					 struct arm_smmu_queue *q, u32 prod)
+					 struct arm_smmu_cmdq *cmdq, u32 prod)
 {
+	struct arm_smmu_queue *q = &cmdq->q;
 	struct arm_smmu_cmdq_ent ent = {
 		.opcode = CMDQ_OP_CMD_SYNC,
 	};
@@ -371,7 +372,7 @@ static void arm_smmu_cmdq_build_sync_cmd(u64 *cmd, struct arm_smmu_device *smmu,
 }
 
 static void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu,
-				     struct arm_smmu_queue *q)
+				     struct arm_smmu_cmdq *cmdq)
 {
 	static const char * const cerror_str[] = {
 		[CMDQ_ERR_CERROR_NONE_IDX]	= "No error",
@@ -379,6 +380,7 @@ static void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu,
 		[CMDQ_ERR_CERROR_ABT_IDX]	= "Abort on command fetch",
 		[CMDQ_ERR_CERROR_ATC_INV_IDX]	= "ATC invalidate timeout",
 	};
+	struct arm_smmu_queue *q = &cmdq->q;
 
 	int i;
 	u64 cmd[CMDQ_ENT_DWORDS];
@@ -427,7 +429,7 @@ static void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu,
 
 static void arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu)
 {
-	__arm_smmu_cmdq_skip_err(smmu, &smmu->cmdq.q);
+	__arm_smmu_cmdq_skip_err(smmu, &smmu->cmdq);
 }
 
 /*
@@ -790,7 +792,7 @@ static int arm_smmu_cmdq_issue_cmdlist(struct arm_smmu_device *smmu,
 	arm_smmu_cmdq_write_entries(cmdq, cmds, llq.prod, n);
 	if (sync) {
 		prod = queue_inc_prod_n(&llq, n);
-		arm_smmu_cmdq_build_sync_cmd(cmd_sync, smmu, &cmdq->q, prod);
+		arm_smmu_cmdq_build_sync_cmd(cmd_sync, smmu, cmdq, prod);
 		queue_write(Q_ENT(&cmdq->q, prod), cmd_sync, CMDQ_ENT_DWORDS);
 
 		/*
-- 
2.43.0


  parent reply	other threads:[~2024-08-24  0:11 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-24  0:10 [PATCH v13 00/10] Add Tegra241 (Grace) CMDQV Support (part 1/2) Nicolin Chen
2024-08-24  0:10 ` [PATCH v13 01/10] iommu/arm-smmu-v3: Issue a batch of commands to the same cmdq Nicolin Chen
2024-08-24  0:10 ` Nicolin Chen [this message]
2024-08-24  0:10 ` [PATCH v13 03/10] iommu/arm-smmu-v3: Pass in cmdq pointer to arm_smmu_cmdq_init Nicolin Chen
2024-08-24  0:10 ` [PATCH v13 04/10] iommu/arm-smmu-v3: Make symbols public for CONFIG_TEGRA241_CMDQV Nicolin Chen
2024-08-24  0:10 ` [PATCH v13 05/10] iommu/arm-smmu-v3: Add ARM_SMMU_OPT_TEGRA241_CMDQV Nicolin Chen
2024-08-24  0:10 ` [PATCH v13 06/10] iommu/arm-smmu-v3: Add acpi_smmu_acpi_probe_model for impl Nicolin Chen
2024-08-27 13:02   ` Will Deacon
2024-08-27 15:57     ` Robin Murphy
2024-08-27 16:18       ` Nicolin Chen
2024-08-29 22:50         ` Nicolin Chen
2024-08-24  0:10 ` [PATCH v13 07/10] iommu/arm-smmu-v3: Add struct arm_smmu_impl_ops Nicolin Chen
2024-08-24  0:10 ` [PATCH v13 08/10] iommu/arm-smmu-v3: Add in-kernel support for NVIDIA Tegra241 (Grace) CMDQV Nicolin Chen
2024-08-26 21:44   ` kernel test robot
2024-08-24  0:10 ` [PATCH v13 09/10] iommu/arm-smmu-v3: Start a new batch if new command is not supported Nicolin Chen
2024-08-24  0:10 ` [PATCH v13 10/10] iommu/tegra241-cmdqv: Limit CMDs for VCMDQs of a guest owned VINTF Nicolin Chen

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