linux-kernel - Re: DMA Engine: Transfer From Userspace

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Date:   Mon, 22 Jun 2020 11:25:53 +0200
From:   Federico Vaga <federico.vaga@...n.ch>
To:     Vinod Koul <vkoul@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>
CC:     <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: DMA Engine: Transfer From Userspace

On Sat, Jun 20, 2020 at 12:47:16AM +0200, Federico Vaga wrote:
>Hello,
>
>is there the possibility of using a DMA engine channel from userspace?
>
>Something like:
>- configure DMA using ioctl() (or whatever configuration mechanism)
>- read() or write() to trigger the transfer

Let me add one more question related to my case. The dmatest module does not
perform tests on SLAVEs. why?

Thanks

>
>-- 
>Federico Vaga [CERN BE-CO-HT]
>
>