On Thu, 29 Aug 2024 15:34:29 -0700, Nicolin Chen wrote:
> NVIDIA's Tegra241 (Grace) SoC has a CMDQ-Virtualization (CMDQV) hardware
> that extends standard ARM SMMUv3 to support multiple command queues with
> virtualization capabilities. Though this is similar to the ECMDQ in SMMU
> v3.3, CMDQV provides additional Virtual Interfaces (VINTFs) allowing VMs
> to have their own VINTFs and Virtual Command Queues (VCMDQs). The VCMDQs
> can only execute a limited set of commands, mainly invalidation commands
> when exclusively used by the VMs, compared to the standard SMMUv3 CMDQ.
>
> [...]
Thanks for this, Nicolin! I did drop the 'default' statement in the end,
as I think it's a bit overkill to fail the probe in that case.
Applied to will (for-joerg/arm-smmu/updates), thanks!
[01/10] iommu/arm-smmu-v3: Issue a batch of commands to the same cmdq
https://git.kernel.org/will/c/56ae8866f3b4
[02/10] iommu/arm-smmu-v3: Pass in cmdq pointer to arm_smmu_cmdq_build_sync_cmd
https://git.kernel.org/will/c/2ea1f0120f90
[03/10] iommu/arm-smmu-v3: Pass in cmdq pointer to arm_smmu_cmdq_init
https://git.kernel.org/will/c/e736c895c45b
[04/10] iommu/arm-smmu-v3: Make symbols public for CONFIG_TEGRA241_CMDQV
https://git.kernel.org/will/c/a7a08b857a32
[05/10] iommu/arm-smmu-v3: Add ARM_SMMU_OPT_TEGRA241_CMDQV
https://git.kernel.org/will/c/b935a5b1c670
[06/10] iommu/arm-smmu-v3: Add acpi_smmu_iort_probe_model for impl
https://git.kernel.org/will/c/6f3f9ff43d00
[07/10] iommu/arm-smmu-v3: Add struct arm_smmu_impl_ops
https://git.kernel.org/will/c/6de80d619203
[08/10] iommu/arm-smmu-v3: Add in-kernel support for NVIDIA Tegra241 (Grace) CMDQV
https://git.kernel.org/will/c/918eb5c856f6
[09/10] iommu/arm-smmu-v3: Start a new batch if new command is not supported
https://git.kernel.org/will/c/f59e85490712
[10/10] iommu/tegra241-cmdqv: Limit CMDs for VCMDQs of a guest owned VINTF
https://git.kernel.org/will/c/a9d40285bdef
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
