soc: aspeed: Add XDMA engine driver
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b4 am [email protected]Versions newest first · linked by author and title
- v11 Latest8 patches 1 replyIn review
- v107 patches 1 replySuperseded
- v95 patches 1 replySuperseded
Earlier versions · 6
| Version | Posted | Patches | Replies | Status |
|---|---|---|---|---|
| v8 | 5 patches | 2 replies | Superseded | |
| v7 | 5 patches | 3 replies | Superseded | |
| v4 | 8 patches | 1 reply | Superseded | |
| v3 | 8 patches | 7 replies | Superseded | |
| v2 | 7 patches | 7 replies | Superseded | |
| v1 | 6 patches | 5 replies | Superseded |
Changes in v11 from the cover letter
- Fix devicetree binding documentation
- Add patches to enable the device on witherspoon and tacoma systems
- Fix the driver to actually use the updated bindings
- Remove the device managed memory in favor of manually allocating and freeing This adds considerable complexity to the probe function and requires the use of a kobject and associated release method, but it fixes the problem of the device context being deleted during an operation or with memory still mapped if the device is unbound from the driver
- Remove the client kref system
- Reset the device when a user closes a file handle with an on-going operation
Patches in v11 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/8 | dt-bindings: soc: Add Aspeed XDMA EngineDocumentation/ MAINTAINERS | +109 | 1 reply | |
| 2/8 | soc: aspeed: Add XDMA Engine DriverMAINTAINERS drivers/ drivers/ +2 more | +1004 | 0 replies | |
| 3/8 | soc: aspeed: xdma: Add user interfacedrivers/ | +218 | 0 replies | |
| 4/8 | soc: aspeed: xdma: Add reset ioctldrivers/ include/ | +36 | 0 replies | |
| 5/8 | ARM: dts: Aspeed: AST2600: Update XDMA engine nodearch/ | +5 | 0 replies | |
| 6/8 | ARM: dts: Aspeed: AST2500: Update XDMA engine nodearch/ | +3 | 0 replies | |
| 7/8 | ARM: dts: Aspeed: Witherspoon: Enable XDMA enginearch/ | +11 | 0 replies | |
| 8/8 | ARM: dts: Aspeed: Tacoma: Enable XDMA enginearch/ | +11 | 0 replies |
Reviews trailers per patch
4 of 8 patches have a Reviewed-by or Acked-by.
| Patch | Andrew Jeffery | Rob Herring |
|---|---|---|
| 1/8 | R-b | R-b |
| 2/8 | R-b | |
| 3/8 | R-b | |
| 4/8 | A-b | |
| 5/8 | ||
| 6/8 | ||
| 7/8 | ||
| 8/8 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH v11 0/8] 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 v10:
- Fix devicetree binding documentation
- Add patches to enable the device on witherspoon and tacoma systems
- Fix the driver to actually use the updated bindings
- Remove the device managed memory in favor of manually allocating and freeing This adds considerable complexity to the probe function and requires the use of a kobject and associated release method, but it fixes the problem of the device context being deleted during an operation or with memory still mapped if the device is unbound from the driver
- Remove the client kref system
- Reset the device when a user closes a file handle with an on-going operation
Changes since v9:
- Remove the kernel command queue
- Use memcpy_toio instead to copy commands to the buffer
- Free the client's genalloc'd memory in the release method
- Switch the bindings documentation to yaml
- Add patches to fix SCU interrupt controller include
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 (8):
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: Update XDMA engine node
ARM: dts: Aspeed: AST2500: Update XDMA engine node
ARM: dts: Aspeed: Witherspoon: Enable XDMA engine
ARM: dts: Aspeed: Tacoma: Enable XDMA engine
.../devicetree/bindings/soc/aspeed/xdma.yaml | 103 ++ MAINTAINERS | 8 + arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts | 11 + arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts | 11 + arch/arm/boot/dts/aspeed-g5.dtsi | 5 +- arch/arm/boot/dts/aspeed-g6.dtsi | 8 +- drivers/soc/aspeed/Kconfig | 8 + drivers/soc/aspeed/Makefile | 1 + drivers/soc/aspeed/aspeed-xdma.c | 1205 ++++++++++++++++++++ include/uapi/linux/aspeed-xdma.h | 42 + 10 files changed, 1397 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/soc/aspeed/xdma.yaml create mode 100644 drivers/soc/aspeed/aspeed-xdma.c create mode 100644 include/uapi/linux/aspeed-xdma.h
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