| Message ID | 20230113171409.30470-1-Sergey.Semin@baikalelectronics.ru (mailing list archive) |
|---|---|
| Headers | show |
| Series | dmaengine: dw-edma: Add RP/EP local DMA controllers support | expand |
Hello folks, On Fri, Jan 13, 2023 at 08:13:42PM +0300, Serge Semin wrote: > This is a final patchset in the series created in the framework of > my Baikal-T1 PCIe/eDMA-related work: > > [1: Done v5] PCI: dwc: Various fixes and cleanups > Link: https://lore.kernel.org/linux-pci/20220624143428.8334-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.0-rc1 > [2: Done v4] PCI: dwc: Add hw version and dma-ranges support > Link: https://lore.kernel.org/linux-pci/20220624143947.8991-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.0-rc1 > [3: Done v7] PCI: dwc: Add generic resources and Baikal-T1 support > Link: https://lore.kernel.org/linux-pci/20221113191301.5526-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.2-rc1 > [4: In-review v9] dmaengine: dw-edma: Add RP/EP local DMA controllers support > Link: ---you are looking at it--- > > Note it is very recommended to merge the patchsets in the same order as > they are listed in the set above in order to have them applied smoothly. > Since the patchsets 1-3 have already been merged into the mainline kernel > this series can be applied via any DMA-engine or PCI repos. > > Here is a short summary regarding this patchset. The series starts with > fixes patches. We discovered that the dw-edma-pcie.c driver incorrectly > initializes the LL/DT base addresses for the platforms with not matching > CPU and PCIe memory spaces. It is fixed by using the pci_bus_address() > method to get a correct base address. After that you can find a series of > the interleaved xfers fixes. It turned out the interleaved transfers > implementation didn't work quite correctly from the very beginning for > instance missing src/dst addresses initialization, etc. In the framework > of the next two patches we suggest to add a new platform-specific > callback - pci_address() and use it to convert the CPU address to the PCIe > space address. It is at least required for the DW eDMA remote End-point > setup on the platforms with not-matching CPU/PCIe address spaces. In case > of the DW eDMA local RP/EP setup the conversion will be done automatically > by the outbound iATU (if no DMA-bypass flag is specified for the > corresponding iATU window). Then we introduce a set of the patches to make > the DebugFS part of the code supporting the multi-eDMA controllers > platforms. It starts with several cleanup patches and is closed joining > the Read/Write channels into a single DMA-device as they originally should > have been. After that you can find the patches with adding the non-atomic > io-64 methods usage, dropping DT-region descriptors allocation, replacing > chip IDs with the device name. In addition to that in order to have the > eDMA embedded into the DW PCIe RP/EP supported we need to bypass the > dma-ranges-based memory ranges mapping since in case of the root port DT > node it's applicable for the peripheral PCIe devices only. Finally at the > series closure we introduce a generic DW eDMA controller support being > available in the DW PCIe Root Port/Endpoint driver. > > Link: https://lore.kernel.org/linux-pci/20220324014836.19149-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v2: > - Drop the patches: > [PATCH 1/25] dmaengine: dw-edma: Drop dma_slave_config.direction field usage > [PATCH 2/25] dmaengine: dw-edma: Fix eDMA Rd/Wr-channels and DMA-direction semantics > since they are going to be merged in in the framework of the > Frank's patchset. > - Add a new patch: "dmaengine: dw-edma: Release requested IRQs on > failure." > - Drop __iomem qualifier from the struct dw_edma_debugfs_entry instance > definition in the dw_edma_debugfs_u32_get() method. (@Manivannan) > - Add a new patch: "dmaengine: dw-edma: Rename DebugFS dentry variables to > 'dent'." (@Manivannan) > - Slightly extend the eDMA name array size. (@Manivannan) > - Change the specific DMA mapping comment a bit to being > clearer. (@Manivannan) > - Add a new patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection > method." > - Don't fail eDMA detection procedure if the DW eDMA driver couldn't probe > device. That happens if the driver is disabled. (@Manivannan) > - Add "dma" registers resource mapping procedure. (@Manivannan) > - Move the eDMA CSRs space detection into the dw_pcie_map_detect() method. > - Remove eDMA on the dw_pcie_ep_init() internal errors. (@Manivannan) > - Remove eDMA in the dw_pcie_ep_exit() method. > - Move the dw_pcie_edma_detect() method execution to the tail of the > dw_pcie_ep_init() function. > > Link: https://lore.kernel.org/linux-pci/20220503225104.12108-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v3: > - Conditionally set dchan->dev->device.dma_coherent field since it can > be missing on some platforms. (@Manivannan) > - Drop the patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection > method". A similar modification has been done in another patchset. > - Add more comprehensive and less regression prune eDMA block detection > procedure. > - Drop the patch: "dma-direct: take dma-ranges/offsets into account in > resource mapping". It will be separately reviewed. > - Remove Manivannan tb tag from the modified patches. > - Rebase onto the kernel v5.18. > > Link: https://lore.kernel.org/linux-pci/20220610091459.17612-1-Sergey.Semin@baikalelectronics.ru > Changelog v4: > - Rabase onto the laters Frank Li series: > Link: https://lore.kernel.org/all/20220524152159.2370739-1-Frank.Li@nxp.com/ > - Add Vinod' Ab-tag. > - Rebase onto the kernel v5.19-rcX. > > Link: https://lore.kernel.org/linux-pci/20220728142841.12305-1-Sergey.Semin@baikalelectronics.ru > Changelog v5: > - Just resend. > - Rebase onto the kernel v6.0-rc2. > > Link: https://lore.kernel.org/linux-pci/20220822185332.26149-1-Sergey.Semin@baikalelectronics.ru > Changelog v6: > - Fix some patchlog and in-line comments misspells. (@Bjorn) > - Directly call *_dma_configure() method on the DW eDMA channel child > device used for the DMA buffers mapping. (@Robin) > - Explicitly set the DMA-mask of the child device in the channel > allocation proecedure. (@Robin) > - Rebase onto the kernel v6.1-rc3. > > Link: https://lore.kernel.org/linux-pci/20221107210438.1515-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v7: > - Activate the mapping auto-detection procedure for IP-cores older than > 5.40a. The viewport-based access has been removed since that > version. (@Yoshihiro) > - Drop the patch > [PATCH v6 22/24] dmaengine: dw-edma: Bypass dma-ranges mapping for the local setup > since the problem has been fixed in the commit f1ad5338a4d5 ("of: Fix > "dma-ranges" handling for bus controllers"). (@Robin) > - Add a new patch: > [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation > (@Robin) > - Add a new patch: > [PATCH v7 24/25] PCI: bt1: Set 64-bit DMA-mask > (@Robin) > > Link: https://lore.kernel.org/linux-pci/20221214235305.31744-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v8: > - Add a new patch: > [PATCH v8 23/26] dmaengine: dw-edma: Relax driver config settings > (@tbot) > - Replace the patch > [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation > with a new one: > [PATCH v8 24/26] PCI: dwc: Set coherent DMA-mask on MSI-address allocation > (@Robin, @Christoph) > > Link: https://lore.kernel.org/linux-pci/20221219144658.26620-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v9: > - Add a new patch: > [PATCH v9 23/27] dmaengine: dw-edma: Add mem-mapped LL-entries support > (@tbot) > - Rebase onto the kernel 6.2-rc3. This is currently the latest version of the patchset. There are several new patches (suggested by @Yoshihiro, @Robin and @tbot) and a few updates have been introduced since the last @Vinod' and @Manivannan' reviews. Thus I had to drop their Rb/Tb-tags from the cover-letter and from some of the patches. Other than that the series seems to be ready to be merged in (@Robin already blessed the DMA-mask-related patches). Since all the preceding patchsets have already been mainlined it can be done via any repo: DMA-engine, PCI, etc. -Serge(y) > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> > Cc: Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru> > Cc: "Krzysztof Wilczyński" <kw@linux.com> > Cc: caihuoqing <caihuoqing@baidu.com> > Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> > Cc: linux-pci@vger.kernel.org > Cc: dmaengine@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > > Serge Semin (27): > dmaengine: Fix dma_slave_config.dst_addr description > dmaengine: dw-edma: Release requested IRQs on failure > dmaengine: dw-edma: Convert ll/dt phys-address to PCIe bus/DMA address > dmaengine: dw-edma: Fix missing src/dst address of the interleaved > xfers > dmaengine: dw-edma: Don't permit non-inc interleaved xfers > dmaengine: dw-edma: Fix invalid interleaved xfers semantics > dmaengine: dw-edma: Add CPU to PCIe bus address translation > dmaengine: dw-edma: Add PCIe bus address getter to the remote EP > glue-driver > dmaengine: dw-edma: Drop chancnt initialization > dmaengine: dw-edma: Fix DebugFS reg entry type > dmaengine: dw-edma: Stop checking debugfs_create_*() return value > dmaengine: dw-edma: Add dw_edma prefix to the DebugFS nodes descriptor > dmaengine: dw-edma: Convert DebugFS descs to being kz-allocated > dmaengine: dw-edma: Rename DebugFS dentry variables to 'dent' > dmaengine: dw-edma: Simplify the DebugFS context CSRs init procedure > dmaengine: dw-edma: Move eDMA data pointer to DebugFS node descriptor > dmaengine: dw-edma: Join Write/Read channels into a single device > dmaengine: dw-edma: Use DMA-engine device DebugFS subdirectory > dmaengine: dw-edma: Use non-atomic io-64 methods > dmaengine: dw-edma: Drop DT-region allocation > dmaengine: dw-edma: Replace chip ID number with device name > dmaengine: dw-edma: Skip cleanup procedure if no private data found > dmaengine: dw-edma: Add mem-mapped LL-entries support > dmaengine: dw-edma: Relax driver config settings > PCI: dwc: Set coherent DMA-mask on MSI-address allocation > PCI: bt1: Set 64-bit DMA-mask > PCI: dwc: Add DW eDMA engine support > > drivers/dma/dw-edma/Kconfig | 5 +- > drivers/dma/dw-edma/dw-edma-core.c | 196 ++++----- > drivers/dma/dw-edma/dw-edma-core.h | 10 +- > drivers/dma/dw-edma/dw-edma-pcie.c | 56 ++- > drivers/dma/dw-edma/dw-edma-v0-core.c | 121 +++--- > drivers/dma/dw-edma/dw-edma-v0-core.h | 1 - > drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 372 ++++++++---------- > drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 5 - > drivers/pci/controller/dwc/pcie-bt1.c | 4 + > .../pci/controller/dwc/pcie-designware-ep.c | 12 +- > .../pci/controller/dwc/pcie-designware-host.c | 24 +- > drivers/pci/controller/dwc/pcie-designware.c | 195 +++++++++ > drivers/pci/controller/dwc/pcie-designware.h | 21 + > include/linux/dma/edma.h | 25 +- > include/linux/dmaengine.h | 2 +- > 15 files changed, 652 insertions(+), 397 deletions(-) > > -- > 2.39.0 > >
On Fri, Jan 13, 2023 at 08:13:42PM +0300, Serge Semin wrote: > This is a final patchset in the series created in the framework of > my Baikal-T1 PCIe/eDMA-related work: > > [1: Done v5] PCI: dwc: Various fixes and cleanups > Link: https://lore.kernel.org/linux-pci/20220624143428.8334-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.0-rc1 > [2: Done v4] PCI: dwc: Add hw version and dma-ranges support > Link: https://lore.kernel.org/linux-pci/20220624143947.8991-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.0-rc1 > [3: Done v7] PCI: dwc: Add generic resources and Baikal-T1 support > Link: https://lore.kernel.org/linux-pci/20221113191301.5526-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.2-rc1 > [4: In-review v9] dmaengine: dw-edma: Add RP/EP local DMA controllers support > Link: ---you are looking at it--- > > Note it is very recommended to merge the patchsets in the same order as > they are listed in the set above in order to have them applied smoothly. > Since the patchsets 1-3 have already been merged into the mainline kernel > this series can be applied via any DMA-engine or PCI repos. > > Here is a short summary regarding this patchset. The series starts with > fixes patches. We discovered that the dw-edma-pcie.c driver incorrectly > initializes the LL/DT base addresses for the platforms with not matching > CPU and PCIe memory spaces. It is fixed by using the pci_bus_address() > method to get a correct base address. After that you can find a series of > the interleaved xfers fixes. It turned out the interleaved transfers > implementation didn't work quite correctly from the very beginning for > instance missing src/dst addresses initialization, etc. In the framework > of the next two patches we suggest to add a new platform-specific > callback - pci_address() and use it to convert the CPU address to the PCIe > space address. It is at least required for the DW eDMA remote End-point > setup on the platforms with not-matching CPU/PCIe address spaces. In case > of the DW eDMA local RP/EP setup the conversion will be done automatically > by the outbound iATU (if no DMA-bypass flag is specified for the > corresponding iATU window). Then we introduce a set of the patches to make > the DebugFS part of the code supporting the multi-eDMA controllers > platforms. It starts with several cleanup patches and is closed joining > the Read/Write channels into a single DMA-device as they originally should > have been. After that you can find the patches with adding the non-atomic > io-64 methods usage, dropping DT-region descriptors allocation, replacing > chip IDs with the device name. In addition to that in order to have the > eDMA embedded into the DW PCIe RP/EP supported we need to bypass the > dma-ranges-based memory ranges mapping since in case of the root port DT > node it's applicable for the peripheral PCIe devices only. Finally at the > series closure we introduce a generic DW eDMA controller support being > available in the DW PCIe Root Port/Endpoint driver. > > Link: https://lore.kernel.org/linux-pci/20220324014836.19149-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v2: > - Drop the patches: > [PATCH 1/25] dmaengine: dw-edma: Drop dma_slave_config.direction field usage > [PATCH 2/25] dmaengine: dw-edma: Fix eDMA Rd/Wr-channels and DMA-direction semantics > since they are going to be merged in in the framework of the > Frank's patchset. > - Add a new patch: "dmaengine: dw-edma: Release requested IRQs on > failure." > - Drop __iomem qualifier from the struct dw_edma_debugfs_entry instance > definition in the dw_edma_debugfs_u32_get() method. (@Manivannan) > - Add a new patch: "dmaengine: dw-edma: Rename DebugFS dentry variables to > 'dent'." (@Manivannan) > - Slightly extend the eDMA name array size. (@Manivannan) > - Change the specific DMA mapping comment a bit to being > clearer. (@Manivannan) > - Add a new patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection > method." > - Don't fail eDMA detection procedure if the DW eDMA driver couldn't probe > device. That happens if the driver is disabled. (@Manivannan) > - Add "dma" registers resource mapping procedure. (@Manivannan) > - Move the eDMA CSRs space detection into the dw_pcie_map_detect() method. > - Remove eDMA on the dw_pcie_ep_init() internal errors. (@Manivannan) > - Remove eDMA in the dw_pcie_ep_exit() method. > - Move the dw_pcie_edma_detect() method execution to the tail of the > dw_pcie_ep_init() function. > > Link: https://lore.kernel.org/linux-pci/20220503225104.12108-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v3: > - Conditionally set dchan->dev->device.dma_coherent field since it can > be missing on some platforms. (@Manivannan) > - Drop the patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection > method". A similar modification has been done in another patchset. > - Add more comprehensive and less regression prune eDMA block detection > procedure. > - Drop the patch: "dma-direct: take dma-ranges/offsets into account in > resource mapping". It will be separately reviewed. > - Remove Manivannan tb tag from the modified patches. > - Rebase onto the kernel v5.18. > > Link: https://lore.kernel.org/linux-pci/20220610091459.17612-1-Sergey.Semin@baikalelectronics.ru > Changelog v4: > - Rabase onto the laters Frank Li series: > Link: https://lore.kernel.org/all/20220524152159.2370739-1-Frank.Li@nxp.com/ > - Add Vinod' Ab-tag. > - Rebase onto the kernel v5.19-rcX. > > Link: https://lore.kernel.org/linux-pci/20220728142841.12305-1-Sergey.Semin@baikalelectronics.ru > Changelog v5: > - Just resend. > - Rebase onto the kernel v6.0-rc2. > > Link: https://lore.kernel.org/linux-pci/20220822185332.26149-1-Sergey.Semin@baikalelectronics.ru > Changelog v6: > - Fix some patchlog and in-line comments misspells. (@Bjorn) > - Directly call *_dma_configure() method on the DW eDMA channel child > device used for the DMA buffers mapping. (@Robin) > - Explicitly set the DMA-mask of the child device in the channel > allocation proecedure. (@Robin) > - Rebase onto the kernel v6.1-rc3. > > Link: https://lore.kernel.org/linux-pci/20221107210438.1515-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v7: > - Activate the mapping auto-detection procedure for IP-cores older than > 5.40a. The viewport-based access has been removed since that > version. (@Yoshihiro) > - Drop the patch > [PATCH v6 22/24] dmaengine: dw-edma: Bypass dma-ranges mapping for the local setup > since the problem has been fixed in the commit f1ad5338a4d5 ("of: Fix > "dma-ranges" handling for bus controllers"). (@Robin) > - Add a new patch: > [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation > (@Robin) > - Add a new patch: > [PATCH v7 24/25] PCI: bt1: Set 64-bit DMA-mask > (@Robin) > > Link: https://lore.kernel.org/linux-pci/20221214235305.31744-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v8: > - Add a new patch: > [PATCH v8 23/26] dmaengine: dw-edma: Relax driver config settings > (@tbot) > - Replace the patch > [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation > with a new one: > [PATCH v8 24/26] PCI: dwc: Set coherent DMA-mask on MSI-address allocation > (@Robin, @Christoph) > > Link: https://lore.kernel.org/linux-pci/20221219144658.26620-1-Sergey.Semin@baikalelectronics.ru/ > Changelog v9: > - Add a new patch: > [PATCH v9 23/27] dmaengine: dw-edma: Add mem-mapped LL-entries support > (@tbot) > - Rebase onto the kernel 6.2-rc3. > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> > Cc: Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru> > Cc: "Krzysztof Wilczyński" <kw@linux.com> > Cc: caihuoqing <caihuoqing@baidu.com> > Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> > Cc: linux-pci@vger.kernel.org > Cc: dmaengine@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > > Serge Semin (27): > dmaengine: Fix dma_slave_config.dst_addr description > dmaengine: dw-edma: Release requested IRQs on failure > dmaengine: dw-edma: Convert ll/dt phys-address to PCIe bus/DMA address > dmaengine: dw-edma: Fix missing src/dst address of the interleaved > xfers > dmaengine: dw-edma: Don't permit non-inc interleaved xfers > dmaengine: dw-edma: Fix invalid interleaved xfers semantics > dmaengine: dw-edma: Add CPU to PCIe bus address translation > dmaengine: dw-edma: Add PCIe bus address getter to the remote EP > glue-driver > dmaengine: dw-edma: Drop chancnt initialization > dmaengine: dw-edma: Fix DebugFS reg entry type > dmaengine: dw-edma: Stop checking debugfs_create_*() return value > dmaengine: dw-edma: Add dw_edma prefix to the DebugFS nodes descriptor > dmaengine: dw-edma: Convert DebugFS descs to being kz-allocated > dmaengine: dw-edma: Rename DebugFS dentry variables to 'dent' > dmaengine: dw-edma: Simplify the DebugFS context CSRs init procedure > dmaengine: dw-edma: Move eDMA data pointer to DebugFS node descriptor > dmaengine: dw-edma: Join Write/Read channels into a single device > dmaengine: dw-edma: Use DMA-engine device DebugFS subdirectory > dmaengine: dw-edma: Use non-atomic io-64 methods > dmaengine: dw-edma: Drop DT-region allocation > dmaengine: dw-edma: Replace chip ID number with device name > dmaengine: dw-edma: Skip cleanup procedure if no private data found > dmaengine: dw-edma: Add mem-mapped LL-entries support > dmaengine: dw-edma: Relax driver config settings > PCI: dwc: Set coherent DMA-mask on MSI-address allocation > PCI: bt1: Set 64-bit DMA-mask > PCI: dwc: Add DW eDMA engine support > > drivers/dma/dw-edma/Kconfig | 5 +- > drivers/dma/dw-edma/dw-edma-core.c | 196 ++++----- > drivers/dma/dw-edma/dw-edma-core.h | 10 +- > drivers/dma/dw-edma/dw-edma-pcie.c | 56 ++- > drivers/dma/dw-edma/dw-edma-v0-core.c | 121 +++--- > drivers/dma/dw-edma/dw-edma-v0-core.h | 1 - > drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 372 ++++++++---------- > drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 5 - > drivers/pci/controller/dwc/pcie-bt1.c | 4 + > .../pci/controller/dwc/pcie-designware-ep.c | 12 +- > .../pci/controller/dwc/pcie-designware-host.c | 24 +- > drivers/pci/controller/dwc/pcie-designware.c | 195 +++++++++ > drivers/pci/controller/dwc/pcie-designware.h | 21 + > include/linux/dma/edma.h | 25 +- > include/linux/dmaengine.h | 2 +- > 15 files changed, 652 insertions(+), 397 deletions(-) Should I take the series in the PCI tree or do you prefer me acking the relevant patches ? Thanks, Lorenzo
On Mon, Jan 16, 2023 at 10:52:29AM +0100, Lorenzo Pieralisi wrote: > On Fri, Jan 13, 2023 at 08:13:42PM +0300, Serge Semin wrote: > > This is a final patchset in the series created in the framework of > > my Baikal-T1 PCIe/eDMA-related work: > > > > [1: Done v5] PCI: dwc: Various fixes and cleanups > > Link: https://lore.kernel.org/linux-pci/20220624143428.8334-1-Sergey.Semin@baikalelectronics.ru/ > > Merged: kernel 6.0-rc1 > > [2: Done v4] PCI: dwc: Add hw version and dma-ranges support > > Link: https://lore.kernel.org/linux-pci/20220624143947.8991-1-Sergey.Semin@baikalelectronics.ru/ > > Merged: kernel 6.0-rc1 > > [3: Done v7] PCI: dwc: Add generic resources and Baikal-T1 support > > Link: https://lore.kernel.org/linux-pci/20221113191301.5526-1-Sergey.Semin@baikalelectronics.ru/ > > Merged: kernel 6.2-rc1 > > [4: In-review v9] dmaengine: dw-edma: Add RP/EP local DMA controllers support > > Link: ---you are looking at it--- > > > > Note it is very recommended to merge the patchsets in the same order as > > they are listed in the set above in order to have them applied smoothly. > > Since the patchsets 1-3 have already been merged into the mainline kernel > > this series can be applied via any DMA-engine or PCI repos. > > > > Here is a short summary regarding this patchset. The series starts with > > fixes patches. We discovered that the dw-edma-pcie.c driver incorrectly > > initializes the LL/DT base addresses for the platforms with not matching > > CPU and PCIe memory spaces. It is fixed by using the pci_bus_address() > > method to get a correct base address. After that you can find a series of > > the interleaved xfers fixes. It turned out the interleaved transfers > > implementation didn't work quite correctly from the very beginning for > > instance missing src/dst addresses initialization, etc. In the framework > > of the next two patches we suggest to add a new platform-specific > > callback - pci_address() and use it to convert the CPU address to the PCIe > > space address. It is at least required for the DW eDMA remote End-point > > setup on the platforms with not-matching CPU/PCIe address spaces. In case > > of the DW eDMA local RP/EP setup the conversion will be done automatically > > by the outbound iATU (if no DMA-bypass flag is specified for the > > corresponding iATU window). Then we introduce a set of the patches to make > > the DebugFS part of the code supporting the multi-eDMA controllers > > platforms. It starts with several cleanup patches and is closed joining > > the Read/Write channels into a single DMA-device as they originally should > > have been. After that you can find the patches with adding the non-atomic > > io-64 methods usage, dropping DT-region descriptors allocation, replacing > > chip IDs with the device name. In addition to that in order to have the > > eDMA embedded into the DW PCIe RP/EP supported we need to bypass the > > dma-ranges-based memory ranges mapping since in case of the root port DT > > node it's applicable for the peripheral PCIe devices only. Finally at the > > series closure we introduce a generic DW eDMA controller support being > > available in the DW PCIe Root Port/Endpoint driver. > > > > Link: https://lore.kernel.org/linux-pci/20220324014836.19149-1-Sergey.Semin@baikalelectronics.ru/ > > Changelog v2: > > - Drop the patches: > > [PATCH 1/25] dmaengine: dw-edma: Drop dma_slave_config.direction field usage > > [PATCH 2/25] dmaengine: dw-edma: Fix eDMA Rd/Wr-channels and DMA-direction semantics > > since they are going to be merged in in the framework of the > > Frank's patchset. > > - Add a new patch: "dmaengine: dw-edma: Release requested IRQs on > > failure." > > - Drop __iomem qualifier from the struct dw_edma_debugfs_entry instance > > definition in the dw_edma_debugfs_u32_get() method. (@Manivannan) > > - Add a new patch: "dmaengine: dw-edma: Rename DebugFS dentry variables to > > 'dent'." (@Manivannan) > > - Slightly extend the eDMA name array size. (@Manivannan) > > - Change the specific DMA mapping comment a bit to being > > clearer. (@Manivannan) > > - Add a new patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection > > method." > > - Don't fail eDMA detection procedure if the DW eDMA driver couldn't probe > > device. That happens if the driver is disabled. (@Manivannan) > > - Add "dma" registers resource mapping procedure. (@Manivannan) > > - Move the eDMA CSRs space detection into the dw_pcie_map_detect() method. > > - Remove eDMA on the dw_pcie_ep_init() internal errors. (@Manivannan) > > - Remove eDMA in the dw_pcie_ep_exit() method. > > - Move the dw_pcie_edma_detect() method execution to the tail of the > > dw_pcie_ep_init() function. > > > > Link: https://lore.kernel.org/linux-pci/20220503225104.12108-1-Sergey.Semin@baikalelectronics.ru/ > > Changelog v3: > > - Conditionally set dchan->dev->device.dma_coherent field since it can > > be missing on some platforms. (@Manivannan) > > - Drop the patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection > > method". A similar modification has been done in another patchset. > > - Add more comprehensive and less regression prune eDMA block detection > > procedure. > > - Drop the patch: "dma-direct: take dma-ranges/offsets into account in > > resource mapping". It will be separately reviewed. > > - Remove Manivannan tb tag from the modified patches. > > - Rebase onto the kernel v5.18. > > > > Link: https://lore.kernel.org/linux-pci/20220610091459.17612-1-Sergey.Semin@baikalelectronics.ru > > Changelog v4: > > - Rabase onto the laters Frank Li series: > > Link: https://lore.kernel.org/all/20220524152159.2370739-1-Frank.Li@nxp.com/ > > - Add Vinod' Ab-tag. > > - Rebase onto the kernel v5.19-rcX. > > > > Link: https://lore.kernel.org/linux-pci/20220728142841.12305-1-Sergey.Semin@baikalelectronics.ru > > Changelog v5: > > - Just resend. > > - Rebase onto the kernel v6.0-rc2. > > > > Link: https://lore.kernel.org/linux-pci/20220822185332.26149-1-Sergey.Semin@baikalelectronics.ru > > Changelog v6: > > - Fix some patchlog and in-line comments misspells. (@Bjorn) > > - Directly call *_dma_configure() method on the DW eDMA channel child > > device used for the DMA buffers mapping. (@Robin) > > - Explicitly set the DMA-mask of the child device in the channel > > allocation proecedure. (@Robin) > > - Rebase onto the kernel v6.1-rc3. > > > > Link: https://lore.kernel.org/linux-pci/20221107210438.1515-1-Sergey.Semin@baikalelectronics.ru/ > > Changelog v7: > > - Activate the mapping auto-detection procedure for IP-cores older than > > 5.40a. The viewport-based access has been removed since that > > version. (@Yoshihiro) > > - Drop the patch > > [PATCH v6 22/24] dmaengine: dw-edma: Bypass dma-ranges mapping for the local setup > > since the problem has been fixed in the commit f1ad5338a4d5 ("of: Fix > > "dma-ranges" handling for bus controllers"). (@Robin) > > - Add a new patch: > > [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation > > (@Robin) > > - Add a new patch: > > [PATCH v7 24/25] PCI: bt1: Set 64-bit DMA-mask > > (@Robin) > > > > Link: https://lore.kernel.org/linux-pci/20221214235305.31744-1-Sergey.Semin@baikalelectronics.ru/ > > Changelog v8: > > - Add a new patch: > > [PATCH v8 23/26] dmaengine: dw-edma: Relax driver config settings > > (@tbot) > > - Replace the patch > > [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation > > with a new one: > > [PATCH v8 24/26] PCI: dwc: Set coherent DMA-mask on MSI-address allocation > > (@Robin, @Christoph) > > > > Link: https://lore.kernel.org/linux-pci/20221219144658.26620-1-Sergey.Semin@baikalelectronics.ru/ > > Changelog v9: > > - Add a new patch: > > [PATCH v9 23/27] dmaengine: dw-edma: Add mem-mapped LL-entries support > > (@tbot) > > - Rebase onto the kernel 6.2-rc3. > > > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > > Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> > > Cc: Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru> > > Cc: "Krzysztof Wilczyński" <kw@linux.com> > > Cc: caihuoqing <caihuoqing@baidu.com> > > Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> > > Cc: linux-pci@vger.kernel.org > > Cc: dmaengine@vger.kernel.org > > Cc: linux-kernel@vger.kernel.org > > > > Serge Semin (27): > > dmaengine: Fix dma_slave_config.dst_addr description > > dmaengine: dw-edma: Release requested IRQs on failure > > dmaengine: dw-edma: Convert ll/dt phys-address to PCIe bus/DMA address > > dmaengine: dw-edma: Fix missing src/dst address of the interleaved > > xfers > > dmaengine: dw-edma: Don't permit non-inc interleaved xfers > > dmaengine: dw-edma: Fix invalid interleaved xfers semantics > > dmaengine: dw-edma: Add CPU to PCIe bus address translation > > dmaengine: dw-edma: Add PCIe bus address getter to the remote EP > > glue-driver > > dmaengine: dw-edma: Drop chancnt initialization > > dmaengine: dw-edma: Fix DebugFS reg entry type > > dmaengine: dw-edma: Stop checking debugfs_create_*() return value > > dmaengine: dw-edma: Add dw_edma prefix to the DebugFS nodes descriptor > > dmaengine: dw-edma: Convert DebugFS descs to being kz-allocated > > dmaengine: dw-edma: Rename DebugFS dentry variables to 'dent' > > dmaengine: dw-edma: Simplify the DebugFS context CSRs init procedure > > dmaengine: dw-edma: Move eDMA data pointer to DebugFS node descriptor > > dmaengine: dw-edma: Join Write/Read channels into a single device > > dmaengine: dw-edma: Use DMA-engine device DebugFS subdirectory > > dmaengine: dw-edma: Use non-atomic io-64 methods > > dmaengine: dw-edma: Drop DT-region allocation > > dmaengine: dw-edma: Replace chip ID number with device name > > dmaengine: dw-edma: Skip cleanup procedure if no private data found > > dmaengine: dw-edma: Add mem-mapped LL-entries support > > dmaengine: dw-edma: Relax driver config settings > > PCI: dwc: Set coherent DMA-mask on MSI-address allocation > > PCI: bt1: Set 64-bit DMA-mask > > PCI: dwc: Add DW eDMA engine support > > > > drivers/dma/dw-edma/Kconfig | 5 +- > > drivers/dma/dw-edma/dw-edma-core.c | 196 ++++----- > > drivers/dma/dw-edma/dw-edma-core.h | 10 +- > > drivers/dma/dw-edma/dw-edma-pcie.c | 56 ++- > > drivers/dma/dw-edma/dw-edma-v0-core.c | 121 +++--- > > drivers/dma/dw-edma/dw-edma-v0-core.h | 1 - > > drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 372 ++++++++---------- > > drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 5 - > > drivers/pci/controller/dwc/pcie-bt1.c | 4 + > > .../pci/controller/dwc/pcie-designware-ep.c | 12 +- > > .../pci/controller/dwc/pcie-designware-host.c | 24 +- > > drivers/pci/controller/dwc/pcie-designware.c | 195 +++++++++ > > drivers/pci/controller/dwc/pcie-designware.h | 21 + > > include/linux/dma/edma.h | 25 +- > > include/linux/dmaengine.h | 2 +- > > 15 files changed, 652 insertions(+), 397 deletions(-) > > Should I take the series in the PCI tree or do you prefer me acking > the relevant patches ? You taking the series in the PCI tree would be preferable choice since it was what we agreed to do for all the denoted in the cover-letter patchsets. -Serge(y) > > Thanks, > Lorenzo
On Fri, 13 Jan 2023 20:13:42 +0300, Serge Semin wrote: > This is a final patchset in the series created in the framework of > my Baikal-T1 PCIe/eDMA-related work: > > [1: Done v5] PCI: dwc: Various fixes and cleanups > Link: https://lore.kernel.org/linux-pci/20220624143428.8334-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.0-rc1 > [2: Done v4] PCI: dwc: Add hw version and dma-ranges support > Link: https://lore.kernel.org/linux-pci/20220624143947.8991-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.0-rc1 > [3: Done v7] PCI: dwc: Add generic resources and Baikal-T1 support > Link: https://lore.kernel.org/linux-pci/20221113191301.5526-1-Sergey.Semin@baikalelectronics.ru/ > Merged: kernel 6.2-rc1 > [4: In-review v9] dmaengine: dw-edma: Add RP/EP local DMA controllers support > Link: ---you are looking at it--- > > [...] Applied to pci/dwc, thanks! [01/27] dmaengine: Fix dma_slave_config.dst_addr description https://git.kernel.org/lpieralisi/pci/c/064f216c0320 [02/27] dmaengine: dw-edma: Release requested IRQs on failure https://git.kernel.org/lpieralisi/pci/c/0abe230898c5 [03/27] dmaengine: dw-edma: Convert ll/dt phys-address to PCIe bus/DMA address https://git.kernel.org/lpieralisi/pci/c/e9bff321a78e [04/27] dmaengine: dw-edma: Fix missing src/dst address of the interleaved xfers https://git.kernel.org/lpieralisi/pci/c/dba023658bb8 [05/27] dmaengine: dw-edma: Don't permit non-inc interleaved xfers https://git.kernel.org/lpieralisi/pci/c/66fd2f907b5e [06/27] dmaengine: dw-edma: Fix invalid interleaved xfers semantics https://git.kernel.org/lpieralisi/pci/c/669e5b693ed0 [07/27] dmaengine: dw-edma: Add CPU to PCIe bus address translation https://git.kernel.org/lpieralisi/pci/c/3e52c2d7440a [08/27] dmaengine: dw-edma: Add PCIe bus address getter to the remote EP glue-driver https://git.kernel.org/lpieralisi/pci/c/262be8be4446 [09/27] dmaengine: dw-edma: Drop chancnt initialization https://git.kernel.org/lpieralisi/pci/c/cbc8047b3c14 [10/27] dmaengine: dw-edma: Fix DebugFS reg entry type https://git.kernel.org/lpieralisi/pci/c/09d4dc211c98 [11/27] dmaengine: dw-edma: Stop checking debugfs_create_*() return value https://git.kernel.org/lpieralisi/pci/c/db75236638be [12/27] dmaengine: dw-edma: Add dw_edma prefix to the DebugFS nodes descriptor https://git.kernel.org/lpieralisi/pci/c/3e2b815a909a [13/27] dmaengine: dw-edma: Convert DebugFS descs to being kz-allocated https://git.kernel.org/lpieralisi/pci/c/65fc08f34f1b [14/27] dmaengine: dw-edma: Rename DebugFS dentry variables to 'dent' https://git.kernel.org/lpieralisi/pci/c/12f5703e8f3e [15/27] dmaengine: dw-edma: Simplify the DebugFS context CSRs init procedure https://git.kernel.org/lpieralisi/pci/c/7d087c23ce0b [16/27] dmaengine: dw-edma: Move eDMA data pointer to DebugFS node descriptor https://git.kernel.org/lpieralisi/pci/c/75ea6127b19a [17/27] dmaengine: dw-edma: Join Write/Read channels into a single device https://git.kernel.org/lpieralisi/pci/c/f19aba4d6c56 [18/27] dmaengine: dw-edma: Use DMA-engine device DebugFS subdirectory https://git.kernel.org/lpieralisi/pci/c/5e1c2b6d9d6e [19/27] dmaengine: dw-edma: Use non-atomic io-64 methods https://git.kernel.org/lpieralisi/pci/c/647c614949f3 [20/27] dmaengine: dw-edma: Drop DT-region allocation https://git.kernel.org/lpieralisi/pci/c/f27b5d39fdf2 [21/27] dmaengine: dw-edma: Replace chip ID number with device name https://git.kernel.org/lpieralisi/pci/c/e2d483f30e93 [22/27] dmaengine: dw-edma: Skip cleanup procedure if no private data found https://git.kernel.org/lpieralisi/pci/c/6bdc8b38c1c3 [23/27] dmaengine: dw-edma: Add mem-mapped LL-entries support https://git.kernel.org/lpieralisi/pci/c/06a2a118d36f [24/27] dmaengine: dw-edma: Relax driver config settings https://git.kernel.org/lpieralisi/pci/c/9dd4a16f2540 [25/27] PCI: dwc: Set coherent DMA-mask on MSI-address allocation https://git.kernel.org/lpieralisi/pci/c/b838544be814 [26/27] PCI: bt1: Set 64-bit DMA-mask https://git.kernel.org/lpieralisi/pci/c/2484fb4c8581 [27/27] PCI: dwc: Add DW eDMA engine support https://git.kernel.org/lpieralisi/pci/c/95624672bb3e Thanks, Lorenzo
This is a final patchset in the series created in the framework of my Baikal-T1 PCIe/eDMA-related work: [1: Done v5] PCI: dwc: Various fixes and cleanups Link: https://lore.kernel.org/linux-pci/20220624143428.8334-1-Sergey.Semin@baikalelectronics.ru/ Merged: kernel 6.0-rc1 [2: Done v4] PCI: dwc: Add hw version and dma-ranges support Link: https://lore.kernel.org/linux-pci/20220624143947.8991-1-Sergey.Semin@baikalelectronics.ru/ Merged: kernel 6.0-rc1 [3: Done v7] PCI: dwc: Add generic resources and Baikal-T1 support Link: https://lore.kernel.org/linux-pci/20221113191301.5526-1-Sergey.Semin@baikalelectronics.ru/ Merged: kernel 6.2-rc1 [4: In-review v9] dmaengine: dw-edma: Add RP/EP local DMA controllers support Link: ---you are looking at it--- Note it is very recommended to merge the patchsets in the same order as they are listed in the set above in order to have them applied smoothly. Since the patchsets 1-3 have already been merged into the mainline kernel this series can be applied via any DMA-engine or PCI repos. Here is a short summary regarding this patchset. The series starts with fixes patches. We discovered that the dw-edma-pcie.c driver incorrectly initializes the LL/DT base addresses for the platforms with not matching CPU and PCIe memory spaces. It is fixed by using the pci_bus_address() method to get a correct base address. After that you can find a series of the interleaved xfers fixes. It turned out the interleaved transfers implementation didn't work quite correctly from the very beginning for instance missing src/dst addresses initialization, etc. In the framework of the next two patches we suggest to add a new platform-specific callback - pci_address() and use it to convert the CPU address to the PCIe space address. It is at least required for the DW eDMA remote End-point setup on the platforms with not-matching CPU/PCIe address spaces. In case of the DW eDMA local RP/EP setup the conversion will be done automatically by the outbound iATU (if no DMA-bypass flag is specified for the corresponding iATU window). Then we introduce a set of the patches to make the DebugFS part of the code supporting the multi-eDMA controllers platforms. It starts with several cleanup patches and is closed joining the Read/Write channels into a single DMA-device as they originally should have been. After that you can find the patches with adding the non-atomic io-64 methods usage, dropping DT-region descriptors allocation, replacing chip IDs with the device name. In addition to that in order to have the eDMA embedded into the DW PCIe RP/EP supported we need to bypass the dma-ranges-based memory ranges mapping since in case of the root port DT node it's applicable for the peripheral PCIe devices only. Finally at the series closure we introduce a generic DW eDMA controller support being available in the DW PCIe Root Port/Endpoint driver. Link: https://lore.kernel.org/linux-pci/20220324014836.19149-1-Sergey.Semin@baikalelectronics.ru/ Changelog v2: - Drop the patches: [PATCH 1/25] dmaengine: dw-edma: Drop dma_slave_config.direction field usage [PATCH 2/25] dmaengine: dw-edma: Fix eDMA Rd/Wr-channels and DMA-direction semantics since they are going to be merged in in the framework of the Frank's patchset. - Add a new patch: "dmaengine: dw-edma: Release requested IRQs on failure." - Drop __iomem qualifier from the struct dw_edma_debugfs_entry instance definition in the dw_edma_debugfs_u32_get() method. (@Manivannan) - Add a new patch: "dmaengine: dw-edma: Rename DebugFS dentry variables to 'dent'." (@Manivannan) - Slightly extend the eDMA name array size. (@Manivannan) - Change the specific DMA mapping comment a bit to being clearer. (@Manivannan) - Add a new patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection method." - Don't fail eDMA detection procedure if the DW eDMA driver couldn't probe device. That happens if the driver is disabled. (@Manivannan) - Add "dma" registers resource mapping procedure. (@Manivannan) - Move the eDMA CSRs space detection into the dw_pcie_map_detect() method. - Remove eDMA on the dw_pcie_ep_init() internal errors. (@Manivannan) - Remove eDMA in the dw_pcie_ep_exit() method. - Move the dw_pcie_edma_detect() method execution to the tail of the dw_pcie_ep_init() function. Link: https://lore.kernel.org/linux-pci/20220503225104.12108-1-Sergey.Semin@baikalelectronics.ru/ Changelog v3: - Conditionally set dchan->dev->device.dma_coherent field since it can be missing on some platforms. (@Manivannan) - Drop the patch: "PCI: dwc: Add generic iATU/eDMA CSRs space detection method". A similar modification has been done in another patchset. - Add more comprehensive and less regression prune eDMA block detection procedure. - Drop the patch: "dma-direct: take dma-ranges/offsets into account in resource mapping". It will be separately reviewed. - Remove Manivannan tb tag from the modified patches. - Rebase onto the kernel v5.18. Link: https://lore.kernel.org/linux-pci/20220610091459.17612-1-Sergey.Semin@baikalelectronics.ru Changelog v4: - Rabase onto the laters Frank Li series: Link: https://lore.kernel.org/all/20220524152159.2370739-1-Frank.Li@nxp.com/ - Add Vinod' Ab-tag. - Rebase onto the kernel v5.19-rcX. Link: https://lore.kernel.org/linux-pci/20220728142841.12305-1-Sergey.Semin@baikalelectronics.ru Changelog v5: - Just resend. - Rebase onto the kernel v6.0-rc2. Link: https://lore.kernel.org/linux-pci/20220822185332.26149-1-Sergey.Semin@baikalelectronics.ru Changelog v6: - Fix some patchlog and in-line comments misspells. (@Bjorn) - Directly call *_dma_configure() method on the DW eDMA channel child device used for the DMA buffers mapping. (@Robin) - Explicitly set the DMA-mask of the child device in the channel allocation proecedure. (@Robin) - Rebase onto the kernel v6.1-rc3. Link: https://lore.kernel.org/linux-pci/20221107210438.1515-1-Sergey.Semin@baikalelectronics.ru/ Changelog v7: - Activate the mapping auto-detection procedure for IP-cores older than 5.40a. The viewport-based access has been removed since that version. (@Yoshihiro) - Drop the patch [PATCH v6 22/24] dmaengine: dw-edma: Bypass dma-ranges mapping for the local setup since the problem has been fixed in the commit f1ad5338a4d5 ("of: Fix "dma-ranges" handling for bus controllers"). (@Robin) - Add a new patch: [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation (@Robin) - Add a new patch: [PATCH v7 24/25] PCI: bt1: Set 64-bit DMA-mask (@Robin) Link: https://lore.kernel.org/linux-pci/20221214235305.31744-1-Sergey.Semin@baikalelectronics.ru/ Changelog v8: - Add a new patch: [PATCH v8 23/26] dmaengine: dw-edma: Relax driver config settings (@tbot) - Replace the patch [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation with a new one: [PATCH v8 24/26] PCI: dwc: Set coherent DMA-mask on MSI-address allocation (@Robin, @Christoph) Link: https://lore.kernel.org/linux-pci/20221219144658.26620-1-Sergey.Semin@baikalelectronics.ru/ Changelog v9: - Add a new patch: [PATCH v9 23/27] dmaengine: dw-edma: Add mem-mapped LL-entries support (@tbot) - Rebase onto the kernel 6.2-rc3. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Cc: Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru> Cc: "Krzysztof Wilczyński" <kw@linux.com> Cc: caihuoqing <caihuoqing@baidu.com> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Cc: linux-pci@vger.kernel.org Cc: dmaengine@vger.kernel.org Cc: linux-kernel@vger.kernel.org Serge Semin (27): dmaengine: Fix dma_slave_config.dst_addr description dmaengine: dw-edma: Release requested IRQs on failure dmaengine: dw-edma: Convert ll/dt phys-address to PCIe bus/DMA address dmaengine: dw-edma: Fix missing src/dst address of the interleaved xfers dmaengine: dw-edma: Don't permit non-inc interleaved xfers dmaengine: dw-edma: Fix invalid interleaved xfers semantics dmaengine: dw-edma: Add CPU to PCIe bus address translation dmaengine: dw-edma: Add PCIe bus address getter to the remote EP glue-driver dmaengine: dw-edma: Drop chancnt initialization dmaengine: dw-edma: Fix DebugFS reg entry type dmaengine: dw-edma: Stop checking debugfs_create_*() return value dmaengine: dw-edma: Add dw_edma prefix to the DebugFS nodes descriptor dmaengine: dw-edma: Convert DebugFS descs to being kz-allocated dmaengine: dw-edma: Rename DebugFS dentry variables to 'dent' dmaengine: dw-edma: Simplify the DebugFS context CSRs init procedure dmaengine: dw-edma: Move eDMA data pointer to DebugFS node descriptor dmaengine: dw-edma: Join Write/Read channels into a single device dmaengine: dw-edma: Use DMA-engine device DebugFS subdirectory dmaengine: dw-edma: Use non-atomic io-64 methods dmaengine: dw-edma: Drop DT-region allocation dmaengine: dw-edma: Replace chip ID number with device name dmaengine: dw-edma: Skip cleanup procedure if no private data found dmaengine: dw-edma: Add mem-mapped LL-entries support dmaengine: dw-edma: Relax driver config settings PCI: dwc: Set coherent DMA-mask on MSI-address allocation PCI: bt1: Set 64-bit DMA-mask PCI: dwc: Add DW eDMA engine support drivers/dma/dw-edma/Kconfig | 5 +- drivers/dma/dw-edma/dw-edma-core.c | 196 ++++----- drivers/dma/dw-edma/dw-edma-core.h | 10 +- drivers/dma/dw-edma/dw-edma-pcie.c | 56 ++- drivers/dma/dw-edma/dw-edma-v0-core.c | 121 +++--- drivers/dma/dw-edma/dw-edma-v0-core.h | 1 - drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 372 ++++++++---------- drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 5 - drivers/pci/controller/dwc/pcie-bt1.c | 4 + .../pci/controller/dwc/pcie-designware-ep.c | 12 +- .../pci/controller/dwc/pcie-designware-host.c | 24 +- drivers/pci/controller/dwc/pcie-designware.c | 195 +++++++++ drivers/pci/controller/dwc/pcie-designware.h | 21 + include/linux/dma/edma.h | 25 +- include/linux/dmaengine.h | 2 +- 15 files changed, 652 insertions(+), 397 deletions(-)