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

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Message-ID: <Y+TBDqkjsuMiA/P7@gondor.apana.org.au>
Date:   Thu, 9 Feb 2023 17:46:54 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Jia Jie 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?

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt