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aa92fa1e53
linux/drivers/dma/dw-edma
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Serge Semin aa92fa1e53 dmaengine: dw-edma: Add PCI bus address getter to the remote EP glue driver 
The Synopsys PCIe Endpoint IP prototype kit can be attached via any PCI
host controller, including one where the PCI bus address space is different
from the CPU address space.  Therefore, we need to make sure the source and
destination addresses of the DMA slave devices are converted to the PCI bus
address space; otherwise DMA transactions may cause memory corruption.

Add a new dw_edma_pcie_address() interface to perform this translation by
using pcibios_resource_to_bus().

Link: https://lore.kernel.org/r/20230113171409.30470-9-Sergey.Semin@baikalelectronics.ru
Fixes: 41aaff2a2a ("dmaengine: Add Synopsys eDMA IP PCIe glue-logic")
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
2023-01-27 17:15:33 +01:00
..
dw-edma-core.c dmaengine: dw-edma: Add CPU to PCI bus address translation 2023-01-27 17:15:33 +01:00
dw-edma-core.h dmaengine: dw-edma: Detach the private data and chip info structures 2022-06-23 14:49:30 -05:00
dw-edma-pcie.c dmaengine: dw-edma: Add PCI bus address getter to the remote EP glue driver 2023-01-27 17:15:33 +01:00
dw-edma-v0-core.c pci-v5.20-changes 2022-08-04 19:30:35 -07:00
dw-edma-v0-core.h dmaengine: dw-edma: Detach the private data and chip info structures 2022-06-23 14:49:30 -05:00
dw-edma-v0-debugfs.c dmaengine: dw-edma: Change rg_region to reg_base in struct dw_edma_chip 2022-06-23 14:56:34 -05:00
dw-edma-v0-debugfs.h dmaengine: dw-edma: Detach the private data and chip info structures 2022-06-23 14:49:30 -05:00
dw-edma-v0-regs.h dmaengine: dw-edma: Fix comments offset characters' alignment 2021-03-16 22:58:52 +05:30
Kconfig dmaengine: dw-edma: Fix build error without CONFIG_PCI_MSI 2019-06-12 10:22:02 +05:30
Makefile dmaengine: Add Synopsys eDMA IP PCIe glue-logic 2019-06-10 13:10:39 +05:30