On Mon, Apr 29, 2024 at 09:43:47PM -0700, Nicolin Chen wrote:
> Allow __arm_smmu_cmdq_skip_err function to be reused by NVIDIA Tegra241
> CMDQV unit since it will use the same data structure for q. And include
> the CMDQ_QUIRK_SYNC_CS_NONE_ONLY quirk when inserting a CMD_SYNC.
>
> Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
> ---
> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 7 +++++--
> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 ++
> 2 files changed, 7 insertions(+), 2 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 538850059bdd..5111859347d5 100644
> --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
> +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
> @@ -379,8 +379,8 @@ static void arm_smmu_cmdq_build_sync_cmd(u64 *cmd, struct arm_smmu_device *smmu,
> arm_smmu_cmdq_build_cmd(cmd, &ent);
> }
>
> -static void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu,
> - struct arm_smmu_queue *q)
> +void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu,
> + struct arm_smmu_queue *q)
> {
> static const char * const cerror_str[] = {
> [CMDQ_ERR_CERROR_NONE_IDX] = "No error",
> @@ -428,6 +428,9 @@ static void __arm_smmu_cmdq_skip_err(struct arm_smmu_device *smmu,
> for (i = 0; i < ARRAY_SIZE(cmd); ++i)
> dev_err(smmu->dev, "\t0x%016llx\n", (unsigned long long)cmd[i]);
>
> + if (q->quirks & CMDQ_QUIRK_SYNC_CS_NONE_ONLY)
> + cmd_sync.sync.cs_none = true;
This hunk should be in "iommu/arm-smmu-v3: Add CS_NONE quirk" ?
Jason
