linux-kernel - [PATCH v9 0/5] soc: aspeed: Add XDMA engine driver

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Date:   Thu, 16 Apr 2020 15:03:34 -0500
From:   Eddie James <eajames@...ux.ibm.com>
To:     linux-aspeed@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        robh+dt@...nel.org, joel@....id.au, andrew@...id.au,
        eajames@...ux.ibm.com
Subject: [PATCH v9 0/5] soc: aspeed: Add XDMA engine driver

This series adds a driver to control the Aspeed XDMA engine embedded in the
AST2500 and AST2600. The XDMA engine performs automatic DMA operations
over PCI-E between the Aspeed SOC (acting as a BMC) and a host processor.

Changes since v8:
 - Use DMA API to allocate memory from reserved region.
 - Fix the driver for the AST2500 by keeping the command queue in kernel
   memory and copying the whole buffer to the reserved memory area before
   starting the operation.
 - Add krefs to the client structure to prevent use-after-free.
 - Switch reset-names binding to "device", "root-complex"

Eddie James (5):
  dt-bindings: soc: Add Aspeed XDMA Engine
  soc: aspeed: Add XDMA Engine Driver
  soc: aspeed: xdma: Add user interface
  soc: aspeed: xdma: Add reset ioctl
  ARM: dts: Aspeed: AST2600: Add XDMA PCI-E root control reset

 .../devicetree/bindings/soc/aspeed/xdma.txt        |   45 +
 MAINTAINERS                                        |    8 +
 arch/arm/boot/dts/aspeed-g6.dtsi                   |    3 +-
 drivers/soc/aspeed/Kconfig                         |    8 +
 drivers/soc/aspeed/Makefile                        |    1 +
 drivers/soc/aspeed/aspeed-xdma.c                   | 1099 ++++++++++++++++++++
 include/uapi/linux/aspeed-xdma.h                   |   42 +
 7 files changed, 1205 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/soc/aspeed/xdma.txt
 create mode 100644 drivers/soc/aspeed/aspeed-xdma.c
 create mode 100644 include/uapi/linux/aspeed-xdma.h

-- 
1.8.3.1