| Message ID | cover.1608053262.git.gustavo.pimentel@synopsys.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | dmaengine: dw-edma: HDMA support | expand |
On 15-12-20, 18:30, Gustavo Pimentel wrote: > This patch series adds the HDMA support, as long the IP design has set > the compatible register map parameter, which allows compatibility at > some degree for the existing Synopsys DesignWare eDMA driver that is > already available on the Kernel. > > The HDMA "Hyper-DMA" IP is an enhancement of the eDMA "embedded-DMA" IP. > > This new improvement comes with a PCI DVSEC that allows to the driver > recognize and switch behavior if it's an eDMA or an HDMA, becoming > retrocompatible, in the absence of this DVSEC, the driver will assume > that is an eDMA IP. > > It also adds the interleaved support, since it will be similar to the > current scatter-gather implementation. > > As well fixes/improves some abnormal behaviors not detected before, such as: > - crash on loading/unloading driver > - memory space definition for the data area and for the linked list space > - scatter-gather address calculation on 32 bits platforms > - minor comment and variable reordering > > Cc: Vinod Koul <vkoul@kernel.org> > Cc: Dan Williams <dan.j.williams@intel.com> > Cc: Bjorn Helgaas <bhelgaas@google.com> > Cc: dmaengine@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: linux-pci@vger.kernel.org > > Gustavo Pimentel (15): > dmaengine: dw-edma: Add writeq() and readq() for 64 bits architectures > dmaengine: dw-edma: Fix comments offset characters' alignment > dmaengine: dw-edma: Add support for the HDMA feature > PCI: Add pci_find_vsec_capability() to find a specific VSEC Had this been picked up.. I see we have dependency on pci patch for this series.. > dmaengine: dw-edma: Add PCIe VSEC data retrieval support > dmaengine: dw-edma: Add device_prep_interleave_dma() support > dmaengine: dw-edma: Improve number of channels check > dmaengine: dw-edma: Reorder variables to keep consistency > dmaengine: dw-edma: Improve the linked list and data blocks definition > dmaengine: dw-edma: Change linked list and data blocks offset and > sizes > dmaengine: dw-edma: Move struct dentry variable from static definition > into dw_edma struct > dmaengine: dw-edma: Fix crash on loading/unloading driver > dmaengine: dw-edma: Change DMA abreviation from lower into upper case > dmaengine: dw-edma: Revert fix scatter-gather address calculation > dmaengine: dw-edma: Add pcim_iomap_table return checker > > drivers/dma/dw-edma/dw-edma-core.c | 178 +++++++++++------- > drivers/dma/dw-edma/dw-edma-core.h | 37 ++-- > drivers/dma/dw-edma/dw-edma-pcie.c | 275 +++++++++++++++++++++------- > drivers/dma/dw-edma/dw-edma-v0-core.c | 300 ++++++++++++++++++++++++------- > drivers/dma/dw-edma/dw-edma-v0-core.h | 2 +- > drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 77 ++++---- > drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 4 +- > drivers/dma/dw-edma/dw-edma-v0-regs.h | 291 +++++++++++++++++++----------- > drivers/pci/pci.c | 29 +++ > include/linux/pci.h | 1 + > include/uapi/linux/pci_regs.h | 5 + > 11 files changed, 844 insertions(+), 355 deletions(-) > > -- > 2.7.4
This patch series adds the HDMA support, as long the IP design has set the compatible register map parameter, which allows compatibility at some degree for the existing Synopsys DesignWare eDMA driver that is already available on the Kernel. The HDMA "Hyper-DMA" IP is an enhancement of the eDMA "embedded-DMA" IP. This new improvement comes with a PCI DVSEC that allows to the driver recognize and switch behavior if it's an eDMA or an HDMA, becoming retrocompatible, in the absence of this DVSEC, the driver will assume that is an eDMA IP. It also adds the interleaved support, since it will be similar to the current scatter-gather implementation. As well fixes/improves some abnormal behaviors not detected before, such as: - crash on loading/unloading driver - memory space definition for the data area and for the linked list space - scatter-gather address calculation on 32 bits platforms - minor comment and variable reordering Cc: Vinod Koul <vkoul@kernel.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: dmaengine@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org Gustavo Pimentel (15): dmaengine: dw-edma: Add writeq() and readq() for 64 bits architectures dmaengine: dw-edma: Fix comments offset characters' alignment dmaengine: dw-edma: Add support for the HDMA feature PCI: Add pci_find_vsec_capability() to find a specific VSEC dmaengine: dw-edma: Add PCIe VSEC data retrieval support dmaengine: dw-edma: Add device_prep_interleave_dma() support dmaengine: dw-edma: Improve number of channels check dmaengine: dw-edma: Reorder variables to keep consistency dmaengine: dw-edma: Improve the linked list and data blocks definition dmaengine: dw-edma: Change linked list and data blocks offset and sizes dmaengine: dw-edma: Move struct dentry variable from static definition into dw_edma struct dmaengine: dw-edma: Fix crash on loading/unloading driver dmaengine: dw-edma: Change DMA abreviation from lower into upper case dmaengine: dw-edma: Revert fix scatter-gather address calculation dmaengine: dw-edma: Add pcim_iomap_table return checker drivers/dma/dw-edma/dw-edma-core.c | 178 +++++++++++------- drivers/dma/dw-edma/dw-edma-core.h | 37 ++-- drivers/dma/dw-edma/dw-edma-pcie.c | 275 +++++++++++++++++++++------- drivers/dma/dw-edma/dw-edma-v0-core.c | 300 ++++++++++++++++++++++++------- drivers/dma/dw-edma/dw-edma-v0-core.h | 2 +- drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 77 ++++---- drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 4 +- drivers/dma/dw-edma/dw-edma-v0-regs.h | 291 +++++++++++++++++++----------- drivers/pci/pci.c | 29 +++ include/linux/pci.h | 1 + include/uapi/linux/pci_regs.h | 5 + 11 files changed, 844 insertions(+), 355 deletions(-)