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 (this patch removed at v11 because dma tree already have fixed patch) 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 (6): 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 PCI: endpoint: Enable DMA tests for endpoints with DMA capabilities 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 | 141 +++++++++++------- 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 | 41 ++--- drivers/dma/dw-edma/dw-edma-v0-core.h | 4 +- drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 18 +-- drivers/dma/dw-edma/dw-edma-v0-debugfs.h | 8 +- drivers/pci/endpoint/functions/pci-epf-test.c | 108 ++++++++++++-- include/linux/dma/edma.h | 59 +++++++- 9 files changed, 313 insertions(+), 180 deletions(-) -- 2.35.1
