linux-kernel - RE: [PATCH v4 4/4] crypto: starfive

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Date:   Mon, 10 Apr 2023 13:35:44 +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>,
        Palmer Dabbelt <palmer@...belt.com>,
        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 v4 4/4] crypto: starfive - Add hash and HMAC support

> > The sequence of event would be:
> > 1. Wait for DMA transfer to complete.
> > 2. Set bit in device CSR to indicate final block has been transferred.
> 
> OK, 2 should be done in the DMA callback function.
> 
> > 3. Device will send IRQ once result is ready.
> > 4. Read out final digest value from device.
> 
> 4 should be done from a tasklet scheduled from the IRQ handler.
> 

I'll update the driver accordingly. 
Thanks again for the advice.

Regards,
Jia Jie