From: Randy Dunlap <rdunlap@infradead.org>
To: Sanjay R Mehta <Sanju.Mehta@amd.com>, vkoul@kernel.org
Cc: gregkh@linuxfoundation.org, dan.j.williams@intel.com,
Thomas.Lendacky@amd.com, Shyam-sundar.S-k@amd.com,
Nehal-bakulchandra.Shah@amd.com, robh@kernel.org,
mchehab+samsung@kernel.org, davem@davemloft.net,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org
Subject: Re: [PATCH v8 1/3] dmaengine: ptdma: Initial driver for the AMD PTDMA
Date: Mon, 22 Mar 2021 10:06:00 -0700 [thread overview]
Message-ID: <e33e0979-6688-0da8-c5a6-6b76073dbafc@infradead.org> (raw)
In-Reply-To: <1616389172-6825-2-git-send-email-Sanju.Mehta@amd.com>
On 3/21/21 9:59 PM, Sanjay R Mehta wrote:
> From: Sanjay R Mehta <sanju.mehta@amd.com>
>
> Add support for AMD PTDMA controller. It performs high-bandwidth
> memory to memory and IO copy operation. Device commands are managed
> via a circular queue of 'descriptors', each of which specifies source
> and destination addresses for copying a single buffer of data.
>
> Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
> ---
> diff --git a/drivers/dma/ptdma/Kconfig b/drivers/dma/ptdma/Kconfig
> new file mode 100644
> index 0000000..c4f8c6f
> --- /dev/null
> +++ b/drivers/dma/ptdma/Kconfig
> @@ -0,0 +1,11 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +config AMD_PTDMA
> + tristate "AMD PassThru DMA Engine"
> + depends on X86_64 && PCI
> + help
> + Enable support for the AMD PTDMA controller. This controller
> + provides DMA capabilities to performs high bandwidth memory to
to perform
> + memory and IO copy operation. It performs DMA transfer through
better: operations.
> + queue based descriptor management. This DMA controller is intended
queue-based
> + to use with AMD Non-Transparent Bridge devices and not for general
to be used with
or
for use with
> + purpose peripheral DMA.
--
~Randy
next prev parent reply other threads:[~2021-03-22 17:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 4:59 [PATCH v8 0/3] Add support for AMD PTDMA controller driver Sanjay R Mehta
2021-03-22 4:59 ` [PATCH v8 1/3] dmaengine: ptdma: Initial driver for the AMD PTDMA Sanjay R Mehta
2021-03-22 17:06 ` Randy Dunlap [this message]
2021-04-20 7:29 ` Sanjay R Mehta
2021-03-22 4:59 ` [PATCH v8 2/3] dmaengine: ptdma: register PTDMA controller as a DMA resource Sanjay R Mehta
2021-03-22 4:59 ` [PATCH v8 3/3] dmaengine: ptdma: Add debugfs entries for PTDMA Sanjay R Mehta
2021-04-06 17:18 ` [PATCH v8 0/3] Add support for AMD PTDMA controller driver Sanjay R Mehta
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