dmaengine Archive on lore.kernel.org
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From: Dave Jiang <dave.jiang@intel.com>
To: Federico Vaga <federico.vaga@cern.ch>,
	Vinod Koul <vkoul@kernel.org>,
	Dan Williams <dan.j.williams@intel.com>
Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: DMA Engine: Transfer From Userspace
Date: Fri, 19 Jun 2020 16:31:24 -0700
Message-ID: <fe199e18-be45-cadc-8bad-4a83ed87bfba@intel.com> (raw)
In-Reply-To: <5614531.lOV4Wx5bFT@harkonnen>



On 6/19/2020 3:47 PM, 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
> 

I may have supposedly promised Vinod to look into possibly providing something 
like this in the future. But I have not gotten around to do that yet. Currently, 
no such support.

  reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-19 22:47 Federico Vaga
2020-06-19 23:31 ` Dave Jiang [this message]
2020-06-21  7:24   ` Vinod Koul
2020-06-21 20:36     ` Federico Vaga
2020-06-21 20:45       ` Richard Weinberger
2020-06-21 22:32         ` Federico Vaga
2020-06-22  4:47       ` Vinod Koul
2020-06-22  6:57         ` Federico Vaga
2020-06-22 12:01         ` Thomas Ruf
2020-06-22 12:27           ` Richard Weinberger
2020-06-22 14:01             ` Thomas Ruf
2020-06-22 12:30           ` Federico Vaga
2020-06-22 14:03             ` Thomas Ruf
2020-06-22 15:54           ` Vinod Koul
2020-06-22 16:34             ` Thomas Ruf
2020-06-24  9:30               ` Thomas Ruf
2020-06-24  9:38                 ` Vinod Koul
2020-06-24 12:07                   ` Peter Ujfalusi
2020-06-24 13:58                     ` Thomas Ruf
2020-06-26 10:29                       ` Peter Ujfalusi
2020-06-29 15:18                         ` Thomas Ruf
2020-06-30 12:31                           ` Peter Ujfalusi
2020-07-01 16:13                             ` Thomas Ruf
2020-06-25  0:42     ` Dave Jiang
2020-06-25  8:11       ` Thomas Ruf
2020-06-26 20:08         ` Ira Weiny
2020-06-29 15:31           ` Thomas Ruf
2020-06-22  9:25 ` Federico Vaga
2020-06-22  9:42   ` Vinod Koul

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