Re: [PATCH v9 0/9] Enable designware PCI EP EDMA locally

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On Fri, Apr 22, 2022 at 12:53 PM Serge Semin <fancer.lancer@xxxxxxxxx> wrote:
>
> Hello folks,
>
> My review is finally over. Aside with that I've tested the series on
> Baikal-T1 SoC, which has DW PCIe Host controller v4.60 and DW eDMA
> embedded. A test was performed on kernel v5.18-rc3 by a simple driver
> copying random data from system memory to SM768 framebuffer and
> vise-versa. So @Frank feel free to add my tag to the entire series:
>
> Tested-by: Serge Semin <fancer.lancer@xxxxxxxxx>

Thanks. I think the maintainer can add this when they pick up the patches.
I will add it if patches need to be respin.

best regards
Frank Li

>
> @Lorenzo, @Rob, @Vinod, my patchset:
> Link: https://lore.kernel.org/linux-pci/20220324014836.19149-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx
> is based on this one. In its turn my series depends on the other
> patchsets:
> [PATCH v2 0/4] clk: Baikal-T1 DDR/PCIe resets and some xGMAC fixes
> Link: [https://lore.kernel.org/linux-pci/20220330144320.27039-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx
> [PATCH 00/12] PCI: dwc: Various fixes and cleanups
> Link: https://lore.kernel.org/linux-pci/20220324012524.16784-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx
> [PATCH 00/16] PCI: dwc: Add dma-ranges/YAML-schema/Baikal-T1 support
> https://lore.kernel.org/linux-pci/20220324013734.18234-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx
> which are currently on review. (BTW @Rob I am waiting for your
> responses there to go on with v2 re-spin.) I am very much eager to get
> my patches ready before the next merge windows. But in order to
> preserve the consistency of the corresponding repo with my patchsets
> it needs to have the @Frank' patches. Seeing aside with @Frank's
> series my changes depends on the changes in the clk and pci
> subsystems, could you please consider choosing a single repository for
> merging all my and @Frank patches in. Since the changes mostly concern
> the DW PCIe controller I suggest to use the 'pci/dwc' branch of the
> 'kernel/git/lpieralisi/pci.git' repository. What do you think?
> @Lorenzo?
>
> -Sergey
>
> On Fri, Apr 22, 2022 at 09:36:34AM -0500, Frank Li wrote:
> > Default Designware EDMA just probe remotely at host side.
> > This patch allow EDMA driver can probe at EP side.
> >
> > 1. Clean up patch
> >    dmaengine: dw-edma: Detach the private data and chip info structures
> >    dmaengine: dw-edma: Remove unused field irq in struct dw_edma_chip
> >    dmaengine: dw-edma: Change rg_region to reg_base in struct
> >    dmaengine: dw-edma: rename wr(rd)_ch_cnt to ll_wr(rd)_cnt in struct
> >
> > 2. Enhance EDMA driver to allow prode eDMA at EP side
> >    dmaengine: dw-edma: Add support for chip specific flags
> >    dmaengine: dw-edma: Add DW_EDMA_CHIP_32BIT_DBI for chip specific flags
> >
> > 3. Bugs fix at EDMA driver when probe eDMA at EP side
> >    dmaengine: dw-edma: Fix programming the source & dest addresses for ep
> >    dmaengine: dw-edma: Don't rely on the deprecated "direction" member
> >
> > 4. change pci-epf-test to use EDMA driver to transfer data.
> >    PCI: endpoint: Add embedded DMA controller test
> >
> > 5. Using imx8dxl to do test, but some EP functions still have not
> > upstream yet. So below patch show how probe eDMA driver at EP
> > controller driver.
> > https://lore.kernel.org/linux-pci/20220309120149.GB134091@thinkpad/T/#m979eb506c73ab3cfca2e7a43635ecdaec18d8097
> >
> > Frank Li (7):
> >   dmaengine: dw-edma: Remove unused field irq in struct dw_edma_chip
> >   dmaengine: dw-edma: Detach the private data and chip info structures
> >   dmaengine: dw-edma: Change rg_region to reg_base in struct
> >     dw_edma_chip
> >   dmaengine: dw-edma: Rename wr(rd)_ch_cnt to ll_wr(rd)_cnt in struct
> >     dw_edma_chip
> >   dmaengine: dw-edma: Add support for chip specific flags
> >   dmaengine: dw-edma: Add DW_EDMA_CHIP_32BIT_DBI for chip specific flags
> >   PCI: endpoint: Add embedded DMA controller test
> >
> > Serge Semin (2):
> >   dmaengine: dw-edma: Drop dma_slave_config.direction field usage
> >   dmaengine: dw-edma: Fix eDMA Rd/Wr-channels and DMA-direction
> >     semantics
> >
> >  drivers/dma/dw-edma/dw-edma-core.c            | 139 +++++++++++-------
> >  drivers/dma/dw-edma/dw-edma-core.h            |  31 +---
> >  drivers/dma/dw-edma/dw-edma-pcie.c            |  83 +++++------
> >  drivers/dma/dw-edma/dw-edma-v0-core.c         |  54 ++++---
> >  drivers/dma/dw-edma/dw-edma-v0-core.h         |   4 +-
> >  drivers/dma/dw-edma/dw-edma-v0-debugfs.c      |  10 +-
> >  drivers/pci/endpoint/functions/pci-epf-test.c | 108 ++++++++++++--
> >  include/linux/dma/edma.h                      |  59 +++++++-
> >  8 files changed, 312 insertions(+), 176 deletions(-)
> >
> > --
> > 2.35.1
> >



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