diff mbox series

[v11,3/9] iommu/arm-smmu-v3: Pass in cmdq pointer to arm_smmu_cmdq_build_sync_cmd

Message ID 728977eae3b97466c4afe89111ab0543b0eeb59b.1722993435.git.nicolinc@nvidia.com (mailing list archive)
State New, archived
Headers show
Series Add Tegra241 (Grace) CMDQV Support (part 1/2) | expand

Commit Message

Nicolin Chen Aug. 7, 2024, 2:11 a.m. UTC 
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.

Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

Comments

Jason Gunthorpe Aug. 14, 2024, 5:26 p.m. UTC | #1 
On Tue, Aug 06, 2024 at 07:11:48PM -0700, Nicolin Chen wrote:
> 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.
> 
> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason
diff mbox series

Patch

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 f481d7be3d4e..d11362e9fc8a 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -342,8 +342,10 @@  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;
+
 	cmd[1] = 0;
 	cmd[0] = FIELD_PREP(CMDQ_0_OP, CMDQ_OP_CMD_SYNC) |
 		 FIELD_PREP(CMDQ_SYNC_0_MSH, ARM_SMMU_SH_ISH) |
@@ -364,7 +366,7 @@  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",
@@ -372,6 +374,7 @@  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];
@@ -410,14 +413,14 @@  static void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu,
 		dev_err(smmu->dev, "\t0x%016llx\n", (unsigned long long)cmd[i]);
 
 	/* Convert the erroneous command into a CMD_SYNC */
-	arm_smmu_cmdq_build_sync_cmd(cmd, smmu, q, cons);
+	arm_smmu_cmdq_build_sync_cmd(cmd, smmu, cmdq, cons);
 
 	queue_write(Q_ENT(q, cons), cmd, q->ent_dwords);
 }
 
 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);
 }
 
 /*
@@ -780,7 +783,7 @@  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);
 
 		/*