Hi!
On Fri, Aug 29, 2014 at 09:44:42PM +0800, Herbert Xu wrote:
> On Mon, Aug 18, 2014 at 03:13:39PM +0200, Steffen Trumtrar wrote:
> >
> > +struct sahara_sha_reqctx {
> > + unsigned int mode;
> > + unsigned int digest_size;
> > + unsigned int context_size;
> > + u8 buf[SAHARA_MAX_SHA_BLOCK_SIZE];
> > + unsigned int buf_cnt;
> > + unsigned int hash_rem;
> > + struct sg_table data_sg;
> > + struct scatterlist buf_sg;
> > + unsigned int sg_in_idx;
> > + unsigned int result_idx;
> > +};
>
> So where is the hash state stored?
>
The hash state is stored in the context_base variable in sahara_dev.
Freescale calls it context in their driver (the only source of information
I have to develop a GPL driver).
To simplify the driver I allocated the context also as dma_alloc_coherent,
same as the key_base for AES.
Thanks,
Steffen
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