linux.git/drivers/dma/Kconfig, branch v6.6

Merge tag 'dmaengine-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2023-09-03T17:49:42+00:00

Pull dmaengine updates from Vinod Koul:
 "New controller support and updates to drivers.

  New support:
   - Qualcomm SM6115 and QCM2290 dmaengine support
   - at_xdma support for microchip,sam9x7 controller

  Updates:
   - idxd updates for wq simplification and ats knob updates
   - fsl edma updates for v3 support
   - Xilinx AXI4-Stream control support
   - Yaml conversion for bcm dma binding"

* tag 'dmaengine-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (53 commits)
  dmaengine: fsl-edma: integrate v3 support
  dt-bindings: fsl-dma: fsl-edma: add edma3 compatible string
  dmaengine: fsl-edma: move tcd into struct fsl_dma_chan
  dmaengine: fsl-edma: refactor chan_name setup and safety
  dmaengine: fsl-edma: move clearing of register interrupt into setup_irq function
  dmaengine: fsl-edma: refactor using devm_clk_get_enabled
  dmaengine: fsl-edma: simply ATTR_DSIZE and ATTR_SSIZE by using ffs()
  dmaengine: fsl-edma: move common IRQ handler to common.c
  dmaengine: fsl-edma: Remove enum edma_version
  dmaengine: fsl-edma: transition from bool fields to bitmask flags in drvdata
  dmaengine: fsl-edma: clean up EXPORT_SYMBOL_GPL in fsl-edma-common.c
  dmaengine: fsl-edma: fix build error when arch is s390
  dmaengine: idxd: Fix issues with PRS disable sysfs knob
  dmaengine: idxd: Allow ATS disable update only for configurable devices
  dmaengine: xilinx_dma: Program interrupt delay timeout
  dmaengine: xilinx_dma: Use tasklet_hi_schedule for timing critical usecase
  dmaengine: xilinx_dma: Freeup active list based on descriptor completion bit
  dmaengine: xilinx_dma: Increase AXI DMA transaction segment count
  dmaengine: xilinx_dma: Pass AXI4-Stream control words to dma client
  dt-bindings: dmaengine: xilinx_dma: Add xlnx,irq-delay property
  ...

dmaengine: fsl-edma: fix build error when arch is s390

2023-08-22T14:41:02+00:00

fixed build error reported by kernel test robot.

>> s390-linux-ld: fsl-edma-main.c:(.text+0xf4c): undefined reference to `devm_platform_ioremap_resource'
   s390-linux-ld: drivers/dma/idma64.o: in function `idma64_platform_probe':

Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202306210131.zaHVasxz-lkp@intel.com/
Signed-off-by: Frank Li 
Link: https://lore.kernel.org/r/20230821161617.2142561-2-Frank.Li@nxp.com
Signed-off-by: Vinod Koul

dmaengine: ipu: Remove the driver

2023-08-01T17:56:46+00:00

The i.MX3 IPU driver does not support devicetree and i.MX has been converted
to a DT-only platform since kernel 5.10.

As there is no user for this driver anymore, just remove it.

Signed-off-by: Fabio Estevam 
Reviewed-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20230729192945.1217206-1-festevam@gmail.com
Signed-off-by: Vinod Koul

dmaengine: xilinx: dma: remove arch dependency

2023-07-12T16:54:02+00:00

As following patches, xilinx dma is also now architecture agnostic,
and it can be compiled for several architectures. We have verified the
CDMA on RISC-V platform, let's remove the ARCH dependency list instead
of adding new ARCH.

To avoid breaking the s390 build, add a dependency on HAS_IOMEM.

'e8b6c54f6d57 ("net: xilinx: temac: Relax Kconfig dependencies")'
'd7eaf962a90b ("net: axienet: In kconfig remove arch dependency for axi_emac")'

Signed-off-by: Zong Li 
Acked-by: Palmer Dabbelt 
Suggested-by: Radhey Shyam Pandey 
Reported-by: kernel test robot 
Link: https://lore.kernel.org/r/20230531090141.23546-1-zong.li@sifive.com
Signed-off-by: Vinod Koul

idmaengine: make FSL_EDMA and INTEL_IDMA64 depends on HAS_IOMEM

2023-07-12T16:52:37+00:00

On s390 systems (aka mainframes), it has classic channel devices for
networking and permanent storage that are currently even more common
than PCI devices. Hence it could have a fully functional s390 kernel
with CONFIG_PCI=n, then the relevant iomem mapping functions
[including ioremap(), devm_ioremap(), etc.] are not available.

Here let FSL_EDMA and INTEL_IDMA64 depend on HAS_IOMEM so that it
won't be built to cause below compiling error if PCI is unset.

--------
ERROR: modpost: "devm_platform_ioremap_resource" [drivers/dma/fsl-edma.ko] undefined!
ERROR: modpost: "devm_platform_ioremap_resource" [drivers/dma/idma64.ko] undefined!
--------

Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202306211329.ticOJCSv-lkp@intel.com/
Signed-off-by: Baoquan He 
Cc: Vinod Koul 
Cc: dmaengine@vger.kernel.org
Link: https://lore.kernel.org/r/20230707135852.24292-2-bhe@redhat.com
Signed-off-by: Vinod Koul

dmaengine: ste_dma40: Get LCPA SRAM from SRAM node

2023-05-16T17:30:19+00:00

Instead of passing the reserved SRAM as a "reg" field
look for a phandle to the LCPA SRAM memory so we can
use the proper SRAM device tree bindings for the SRAM.

Signed-off-by: Linus Walleij 
Link: https://lore.kernel.org/r/20230417-ux500-dma40-cleanup-v3-2-60bfa6785968@linaro.org
Signed-off-by: Vinod Koul

dmaengine: tegra: explicitly select DMA_VIRTUAL_CHANNELS

2023-03-31T08:03:50+00:00

Enabling TEGRA186_GPC_DMA will cause this build failure unless some other
DMA driver which uses DMA_VIRTUAL_CHANNELS is enabled:

  ERROR: modpost: "vchan_dma_desc_free_list" [drivers/dma/tegra186-gpc-dma.ko] undefined!
  ERROR: modpost: "vchan_init" [drivers/dma/tegra186-gpc-dma.ko] undefined!
  ERROR: modpost: "vchan_tx_submit" [drivers/dma/tegra186-gpc-dma.ko] undefined!
  ERROR: modpost: "vchan_tx_desc_free" [drivers/dma/tegra186-gpc-dma.ko] undefined!
  ERROR: modpost: "vchan_find_desc" [drivers/dma/tegra186-gpc-dma.ko] undefined!
  make[1]: *** [scripts/Makefile.modpost:136: Module.symvers] Error 1

Add an explicit select of DMA_VIRTUAL_CHANNELS to avoid this.

Signed-off-by: Mark Salter 
Link: https://lore.kernel.org/r/20230329172129.88403-1-msalter@redhat.com
Signed-off-by: Vinod Koul

Merge tag 'dmaengine-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2023-02-25T01:18:54+00:00

Pull dmaengine updates from Vinod Koul:
 "A new driver, couple of device support and binding conversion along
  with bunch of driver updates are the main features of this.

  New hardware support:

   - TI AM62Ax controller support

   - Xilinx xdma driver

   - Qualcomm SM6125, SM8550, QDU1000/QRU1000 GPI controller

  Updates:

   - Runtime pm support for at_xdmac driver

   - IMX sdma binding conversion to yaml and HDMI audio support

   - IMX mxs binding conversion to yaml"

* tag 'dmaengine-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (35 commits)
  dmaengine: idma64: Update bytes_transferred field
  dmaengine: imx-sdma: Set DMA channel to be private
  dmaengine: dw: Move check for paused channel to dwc_get_residue()
  dmaengine: ptdma: check for null desc before calling pt_cmd_callback
  dmaengine: dw-axi-dmac: Do not dereference NULL structure
  dmaengine: idxd: Fix default allowed read buffers value in group
  dmaengine: sf-pdma: pdma_desc memory leak fix
  dmaengine: Simplify dmaenginem_async_device_register() function
  dmaengine: use sysfs_emit() to instead of scnprintf()
  dmaengine: Make an order in struct dma_device definition
  dt-bindings: dma: cleanup examples - indentation, lowercase hex
  dt-bindings: dma: drop unneeded quotes
  dmaengine: xilinx: xdma: Add user logic interrupt support
  dmaengine: xilinx: xdma: Add xilinx xdma driver
  dmaengine: drivers: Use devm_platform_ioremap_resource()
  dmaengine: at_xdmac: remove empty line
  dmaengine: at_xdmac: add runtime pm support
  dmaengine: at_xdmac: align properly function members
  dmaengine: ppc4xx: Convert to use sysfs_emit()/sysfs_emit_at() APIs
  dmaengine: sun6i: Set the maximum segment size
  ...

dmaengine: xilinx: xdma: Add xilinx xdma driver

2023-02-10T06:02:26+00:00

Add driver to enable PCIe board which uses XDMA (the DMA/Bridge Subsystem
for PCI Express). For example, Xilinx Alveo PCIe devices.
    https://www.xilinx.com/products/boards-and-kits/alveo.html

The XDMA engine support up to 4 Host to Card (H2C) and 4 Card to Host (C2H)
channels. Memory transfers are specified on a per-channel basis in
descriptor linked lists, which the DMA fetches from host memory and
processes. Events such as descriptor completion and errors are signaled
using interrupts. The hardware detail is provided by
    https://docs.xilinx.com/r/en-US/pg195-pcie-dma/Introduction

This driver implements dmaengine APIs.
    - probe the available DMA channels
    - use dma_slave_map for channel lookup
    - use virtual channel to manage dmaengine tx descriptors
    - implement device_prep_slave_sg callback to handle host scatter gather
      list
    - implement device_config to config device address for DMA transfer

Signed-off-by: Lizhi Hou 
Signed-off-by: Sonal Santan 
Signed-off-by: Max Zhen 
Signed-off-by: Brian Xu 
Tested-by: Martin Tuma 
Link: https://lore.kernel.org/r/1674145926-29449-2-git-send-email-lizhi.hou@amd.com
Signed-off-by: Vinod Koul

dmaengine: remove s3c24xx driver

2023-01-16T08:26:06+00:00

The s3c24xx platform was removed and this driver is no longer
needed.

Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: Arnd Bergmann