Re: [EXT] [PATCH v9 3/7] crypto: caam - determine whether CAAM supports blob encap/decap
From: Ahmad Fatoum
Date: Mon May 09 2022 - 09:05:10 EST
Hello Pankaj,
On Mon, 2022-05-09 at 12:39 +0000, Pankaj Gupta wrote:
> > - if (ctrlpriv->era < 10)
> > + comp_params = rd_reg32(&ctrl->perfmon.comp_parms_ls);
> > + ctrlpriv->blob_present = !!(comp_params & CTPR_LS_BLOB);
> > +
> > + if (ctrlpriv->era < 10) {
> > rng_vid = (rd_reg32(&ctrl->perfmon.cha_id_ls) &
> > CHA_ID_LS_RNG_MASK) >>
> > CHA_ID_LS_RNG_SHIFT;
>
> Check for AES CHAs for Era < 10, should be added.
Do I need this? I only do this check for Era >= 10, because apparently
there are Layerscape non-E processors that indicate BLOB support via
CTPR_LS_BLOB, but fail at runtime. Are there any Era < 10 SoCs
that are similarly broken?
Cheers,
Ahmad