Re: [PATCH v7 04/23] iommu: Introduce attach/detach_pasid_table API

Auger Eric
2019-05-15T13:07:07Z

Hi Jean-Philippe,

On 5/15/19 2:09 PM, Jean-Philippe Brucker wrote:
> On 08/04/2019 13:18, Eric Auger wrote:
>> diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h
>> index edcc0dda7993..532a64075f23 100644
>> --- a/include/uapi/linux/iommu.h
>> +++ b/include/uapi/linux/iommu.h
>> @@ -112,4 +112,51 @@ struct iommu_fault {
>> struct iommu_fault_page_request prm;
>> };
>> };
>> +
>> +/**
>> + * SMMUv3 Stream Table Entry stage 1 related information
>> + * The PASID table is referred to as the context descriptor (CD) table.
>> + *
>> + * @s1fmt: STE s1fmt (format of the CD table: single CD, linear table
>> + or 2-level table)
>
> Running "scripts/kernel-doc -v -none" on this header produces some
> warnings. Not sure if we want to get rid of all of them, but we should
> at least fix the coding style for this comment (line must start with
> " * "). I'm fixing it up on my sva/api branch
Thanks!

Let me know if you want me to do the job for additional fixes.

Eric

>
> Thanks,
> Jean
>
>> + * @s1dss: STE s1dss (specifies the behavior when pasid_bits != 0
>> + and no pasid is passed along with the incoming transaction)
>> + * Please refer to the smmu 3.x spec (ARM IHI 0070A) for full details
>> + */
>> +struct iommu_pasid_smmuv3 {
>> +#define PASID_TABLE_SMMUV3_CFG_VERSION_1 1
>> + __u32 version;
>> + __u8 s1fmt;
>> + __u8 s1dss;
>> + __u8 padding[2];
>> +};