linux-kernel - RE: [PATCH v2 4/4] crypto: starfive

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Message-ID: <4f40b91f0756417ba5edbc742a3cd349@EXMBX168.cuchost.com>
Date:   Fri, 10 Feb 2023 01:39:26 +0000
From:   JiaJie Ho <jiajie.ho@...rfivetech.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
CC:     "David S . Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Conor Dooley <conor.dooley@...rochip.com>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>
Subject: RE: [PATCH v2 4/4] crypto: starfive - Add hash and HMAC support



> -----Original Message-----
> From: Herbert Xu <herbert@...dor.apana.org.au>
> Sent: 9 February, 2023 5:47 PM
> To: JiaJie Ho <jiajie.ho@...rfivetech.com>
> Cc: David S . Miller <davem@...emloft.net>; Rob Herring
> <robh+dt@...nel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@...aro.org>; Emil Renner Berthing
> <kernel@...il.dk>; Conor Dooley <conor.dooley@...rochip.com>; linux-
> crypto@...r.kernel.org; devicetree@...r.kernel.org; linux-
> kernel@...r.kernel.org; linux-riscv@...ts.infradead.org
> Subject: Re: [PATCH v2 4/4] crypto: starfive - Add hash and HMAC support
> 
> On Mon, Jan 30, 2023 at 11:42:42PM +0800, Jia Jie Ho wrote:
> >
> > +static inline int starfive_hash_wait_hmac_done(struct
> > +starfive_cryp_ctx *ctx) {
> > +	struct starfive_cryp_dev *cryp = ctx->cryp;
> > +	u32 status;
> > +
> > +	return readl_relaxed_poll_timeout(cryp->base +
> STARFIVE_HASH_SHACSR, status,
> > +					  (status &
> STARFIVE_HASH_HMAC_DONE), 10, 100000); }
> > +
> > +static inline int starfive_hash_wait_busy(struct starfive_cryp_ctx
> > +*ctx) {
> > +	struct starfive_cryp_dev *cryp = ctx->cryp;
> > +	u32 status;
> > +
> > +	return readl_relaxed_poll_timeout(cryp->base +
> STARFIVE_HASH_SHACSR, status,
> > +					  !(status & STARFIVE_HASH_BUSY),
> 10, 100000); }
> > +
> > +static inline int starfive_hash_wait_key_done(struct
> > +starfive_cryp_ctx *ctx) {
> > +	struct starfive_cryp_dev *cryp = ctx->cryp;
> > +	u32 status;
> > +
> > +	return readl_relaxed_poll_timeout(cryp->base +
> STARFIVE_HASH_SHACSR, status,
> > +					  (status &
> STARFIVE_HASH_KEY_DONE), 10, 100000); }
> 
> Is there no IRQ mechanism for this?

Only hmac done has IRQ, I'll add that in the next version.

Thanks
Jia Jie