[PATCH 1/9] iommu/arm-smmu-v3: Add struct arm_smmu_cmd to represent the HW format command

[Nicolin Chen]

On Fri, May 01, 2026 at 11:29:10AM -0300, Jason Gunthorpe wrote:
> Like STE/CD, add a wrapper struct around the u64 array to represent the
> already FIELD_PREP'd command data. Unlike the STE/CD this is a u64
> because the command submission path will have the swap to le64.
> 
> This makes the API clearer when a u64 is referring to a formatted
> command and makes the following changes easier to follow.
> 
> Move the command constants out of the struct and into an enum alongside
> the rest of the constants defining the HW format so the entire HW format
> is self contained and independent of struct arm_smmu_cmdq_ent.
> 
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>

Reviewed-by: Nicolin Chen <nicolinc at nvidia.com>