Add support for HDMA NATIVE, as long the IP design has set
the compatible register map parameter-HDMA_NATIVE,
which allows compatibility for native HDMA register configuration.
The HDMA Hyper-DMA IP is an enhancement of the eDMA embedded-DMA IP.
And the native HDMA registers are different from eDMA,
so this patch add support for HDMA NATIVE mode.
HDMA write and read channels operate independently to maximize
the performance of the HDMA read and write data transfer over
the link When you configure the HDMA with multiple read channels,
then it uses a round robin (RR) arbitration scheme to select
the next read channel to be serviced.The same applies when
youhave multiple write channels.
The native HDMA driver also supports a maximum of 16 independent
channels (8 write + 8 read), which can run simultaneously.
Both SAR (Source Address Register) and DAR (Destination Address Register)
are aligned to byte.
Cai Huoqing (2):
dmaengine: dw-edma: Add support for native HDMA
dmaengine: dw-edma: Optimization in dw_edma_v0_core_handle_int
Cai huoqing (3):
dmaengine: dw-edma: Rename dw_edma_core_ops structure to
dw_edma_plat_ops
dmaengine: dw-edma: Create a new dw_edma_core_ops structure to
abstract controller operation
dmaengine: dw-edma: Add HDMA DebugFS support
v6->v7:
[1/5]
1.Update the commit log.
[2/5]
2.Revert dw_edma_core_handle_int back to dw-edma-core.h.
3.Fix code style.
[3/5]
4.Move the change of register file from patch[4/5] to patch[3/5].
5.Fix code style.
v6 link:
https://lore.kernel.org/lkml/20230310032342.17395-1-cai.huoqing@xxxxxxxxx/
drivers/dma/dw-edma/Makefile | 8 +-
drivers/dma/dw-edma/dw-edma-core.c | 86 ++----
drivers/dma/dw-edma/dw-edma-core.h | 58 ++++
drivers/dma/dw-edma/dw-edma-pcie.c | 4 +-
drivers/dma/dw-edma/dw-edma-v0-core.c | 91 ++++--
drivers/dma/dw-edma/dw-edma-v0-core.h | 14 +-
drivers/dma/dw-edma/dw-hdma-v0-core.c | 277 +++++++++++++++++++
drivers/dma/dw-edma/dw-hdma-v0-core.h | 17 ++
drivers/dma/dw-edma/dw-hdma-v0-debugfs.c | 176 ++++++++++++
drivers/dma/dw-edma/dw-hdma-v0-debugfs.h | 22 ++
drivers/dma/dw-edma/dw-hdma-v0-regs.h | 130 +++++++++
drivers/pci/controller/dwc/pcie-designware.c | 2 +-
include/linux/dma/edma.h | 7 +-
13 files changed, 785 insertions(+), 107 deletions(-)
create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-core.c
create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-core.h
create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-debugfs.c
create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-debugfs.h
create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-regs.h
--
2.34.1
