Re: [PATCH v1 1/2] Add crypto driver support for some MediaTek chips

From: Ryder Lee
Date: Thu Dec 08 2016 - 04:05:46 EST


Hello,

On Mon, 2016-12-05 at 09:52 +0100, Corentin Labbe wrote:
> Hello
>
> I have two minor comment.
>
> On Mon, Dec 05, 2016 at 03:01:23PM +0800, Ryder Lee wrote:
> > This adds support for the MediaTek hardware accelerator on
> > mt7623/mt2701/mt8521p SoC.
> >
> > This driver currently implement:
> > - SHA1 and SHA2 family(HMAC) hash alogrithms.
>
> There is a typo for algorithms.
>
> [...]
> > +/**
> > + * struct mtk_desc - DMA descriptor
> > + * @hdr: the descriptor control header
> > + * @buf: DMA address of input buffer segment
> > + * @ct: DMA address of command token that control operation flow
> > + * @ct_hdr: the command token control header
> > + * @tag: the user-defined field
> > + * @tfm: DMA address of transform state
> > + * @bound: align descriptors offset boundary
> > + *
> > + * Structure passed to the crypto engine to describe where source
> > + * data needs to be fetched and how it needs to be processed.
> > + */
> > +struct mtk_desc {
> > + u32 hdr;
> > + u32 buf;
> > + u32 ct;
> > + u32 ct_hdr;
> > + u32 tag;
> > + u32 tfm;
> > + u32 bound[2];
> > +};
>
> Do you have tested this descriptor with BE/LE kernel ?

I did not test it with BE kernel, because both CPU and accelerator in
our SoC just run on LE system.

Thanks for reminding me, i will use byteorder conversion macros and type
identifiers.

> Regards
> Corentin Labbe