dmaengine Archive on lore.kernel.org
 help / color / Atom feed
From: Alexander Gordeev <a.gordeev.box@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Alexander Gordeev <a.gordeev.box@gmail.com>,
	Michael Chen <micchen@altera.com>,
	devel@driverdev.osuosl.org, dmaengine@vger.kernel.org
Subject: [PATCH v2 0/2] dmaengine: avalon: Support Avalon-MM DMA Interface for PCIe
Date: Wed,  9 Oct 2019 12:12:29 +0200
Message-ID: <cover.1570558807.git.a.gordeev.box@gmail.com> (raw)

This series is against v5.4-rc2

Changes since v1:
- "avalon-dma" converted to "dmaengine" model;
- "avalon-drv" renamed to "avalon-test";

The Avalon-MM DMA Interface for PCIe is a design used in hard IPs for
Intel Arria, Cyclone or Stratix FPGAs. It transfers data between on-chip
memory and system memory.

Patch 1. This patch introduces "avalon-dma" driver that conforms to
"dmaengine" model.

Patch 2. The existing "dmatest" is not meant for DMA_SLAVE type of
transfers needed by "avalon-dma". Instead, custom "avalon-test" driver
was used to debug and stress "avalon-dma". If it could be useful for a
wider audience, I can make it optional part of "avalon-dma" sources or
leave it as separate driver. Marking patch 2 as RFC for now.

Testing was done using a custom FPGA build with Arria 10 FPGA streaming
data to target device RAM:

  +----------+    +----------+    +----------+        +----------+
  | Nios CPU |<-->|   RAM    |<-->|  Avalon  |<-PCIe->| Host CPU |
  +----------+    +----------+    +----------+        +----------+

The RAM was examined for data integrity by examining RAM contents
from host CPU (indirectly - checking data DMAed to the system) and
from Nios CPU that has direct access to the device RAM. A companion
tool using "avalon-test" driver was used to DMA files to the device:
https://github.com/a-gordeev/avalon-tool.git

CC: Michael Chen <micchen@altera.com>
CC: devel@driverdev.osuosl.org
CC: dmaengine@vger.kernel.org

Alexander Gordeev (2):
  dmaengine: avalon: Intel Avalon-MM DMA Interface for PCIe
  dmaengine: avalon: Intel Avalon-MM DMA Interface for PCIe test

 drivers/dma/Kconfig                     |   3 +
 drivers/dma/Makefile                    |   2 +
 drivers/dma/avalon-test/Kconfig         |  23 +
 drivers/dma/avalon-test/Makefile        |  14 +
 drivers/dma/avalon-test/avalon-dev.c    |  65 +++
 drivers/dma/avalon-test/avalon-dev.h    |  33 ++
 drivers/dma/avalon-test/avalon-ioctl.c  | 128 +++++
 drivers/dma/avalon-test/avalon-ioctl.h  |  12 +
 drivers/dma/avalon-test/avalon-mmap.c   |  93 ++++
 drivers/dma/avalon-test/avalon-mmap.h   |  12 +
 drivers/dma/avalon-test/avalon-sg-buf.c | 132 +++++
 drivers/dma/avalon-test/avalon-sg-buf.h |  26 +
 drivers/dma/avalon-test/avalon-util.c   |  54 ++
 drivers/dma/avalon-test/avalon-util.h   |  12 +
 drivers/dma/avalon-test/avalon-xfer.c   | 697 ++++++++++++++++++++++++
 drivers/dma/avalon-test/avalon-xfer.h   |  28 +
 drivers/dma/avalon/Kconfig              |  88 +++
 drivers/dma/avalon/Makefile             |   6 +
 drivers/dma/avalon/avalon-core.c        | 432 +++++++++++++++
 drivers/dma/avalon/avalon-core.h        |  90 +++
 drivers/dma/avalon/avalon-hw.c          | 212 +++++++
 drivers/dma/avalon/avalon-hw.h          |  86 +++
 drivers/dma/avalon/avalon-pci.c         | 150 +++++
 include/uapi/linux/avalon-ioctl.h       |  32 ++
 24 files changed, 2430 insertions(+)
 create mode 100644 drivers/dma/avalon-test/Kconfig
 create mode 100644 drivers/dma/avalon-test/Makefile
 create mode 100644 drivers/dma/avalon-test/avalon-dev.c
 create mode 100644 drivers/dma/avalon-test/avalon-dev.h
 create mode 100644 drivers/dma/avalon-test/avalon-ioctl.c
 create mode 100644 drivers/dma/avalon-test/avalon-ioctl.h
 create mode 100644 drivers/dma/avalon-test/avalon-mmap.c
 create mode 100644 drivers/dma/avalon-test/avalon-mmap.h
 create mode 100644 drivers/dma/avalon-test/avalon-sg-buf.c
 create mode 100644 drivers/dma/avalon-test/avalon-sg-buf.h
 create mode 100644 drivers/dma/avalon-test/avalon-util.c
 create mode 100644 drivers/dma/avalon-test/avalon-util.h
 create mode 100644 drivers/dma/avalon-test/avalon-xfer.c
 create mode 100644 drivers/dma/avalon-test/avalon-xfer.h
 create mode 100644 drivers/dma/avalon/Kconfig
 create mode 100644 drivers/dma/avalon/Makefile
 create mode 100644 drivers/dma/avalon/avalon-core.c
 create mode 100644 drivers/dma/avalon/avalon-core.h
 create mode 100644 drivers/dma/avalon/avalon-hw.c
 create mode 100644 drivers/dma/avalon/avalon-hw.h
 create mode 100644 drivers/dma/avalon/avalon-pci.c
 create mode 100644 include/uapi/linux/avalon-ioctl.h

-- 
2.23.0


             reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 10:12 Alexander Gordeev [this message]
2019-10-09 10:12 ` [PATCH v2 1/2] dmaengine: avalon: Intel " Alexander Gordeev
2019-10-09 12:14   ` Dan Carpenter
2019-10-09 14:58     ` Alexander Gordeev
2019-10-09 18:53       ` Dan Carpenter
2019-10-10  8:51         ` Alexander Gordeev
2019-10-10 11:30           ` Dan Carpenter
2019-10-15 11:24             ` Alexander Gordeev
2019-10-15 11:41               ` Dan Carpenter
2019-10-15 12:27                 ` Alexander Gordeev
2019-10-15 13:19               ` Dan Carpenter
2019-10-15 14:31                 ` Alexander Gordeev
2019-10-15 14:47                   ` Dan Carpenter
2019-10-09 13:07   ` Greg KH
2019-10-15 10:33   ` Vinod Koul
2019-10-15 13:11     ` Alexander Gordeev
2019-10-09 10:12 ` [PATCH RFC v2 2/2] dmaengine: avalon: Intel Avalon-MM DMA Interface for PCIe test Alexander Gordeev
2019-10-09 13:08   ` Greg KH
2019-10-09 13:46   ` Dan Carpenter

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=cover.1570558807.git.a.gordeev.box@gmail.com \
    --to=a.gordeev.box@gmail.com \
    --cc=devel@driverdev.osuosl.org \
    --cc=dmaengine@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=micchen@altera.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

dmaengine Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/dmaengine/0 dmaengine/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dmaengine dmaengine/ https://lore.kernel.org/dmaengine \
		dmaengine@vger.kernel.org dmaengine@archiver.kernel.org
	public-inbox-index dmaengine

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.dmaengine


AGPL code for this site: git clone https://public-inbox.org/ public-inbox