[PATCH v5 0/9] Enable designware PCI EP EDMA locally

Frank Li
2022-03-10T19:25:24Z

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: functions/pci-epf-test: Support PCI controller DMA

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: 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
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: functions/pci-epf-test: Support PCI controller DMA

Manivannan Sadhasivam (2):
dmaengine: dw-edma: Fix programming the source & dest addresses for ep
dmaengine: dw-edma: Don't rely on the deprecated "direction" member

drivers/dma/dw-edma/dw-edma-core.c | 131 +++++++++++-------
drivers/dma/dw-edma/dw-edma-core.h | 32 +----
drivers/dma/dw-edma/dw-edma-pcie.c | 83 +++++------
drivers/dma/dw-edma/dw-edma-v0-core.c | 46 +++---
drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 10 +-
drivers/pci/endpoint/functions/pci-epf-test.c | 108 +++++++++++++--
include/linux/dma/edma.h | 56 +++++++-
7 files changed, 298 insertions(+), 168 deletions(-)

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2.24.0.rc1