Hi, My setup is like one jetson-xavier acts as RC and another jetson-xavier acts as EP. I want to transfer data from endpoint driver(pci-epf-nv-test.c). To achieve that i have reserved 0x200000 bytes of memory starting from 0xe0000000 in RC side. In EP side i make use of pci_epc_mem_alloc_addr,p…

Initiating data transfer from Endpoint to RC

dasanfreedom September 29, 2021, 9:03am 3

After disabling smmu, i can able to achieve it.
To disable smmu , removed iommus and dma-coherent form device tree file for pcie5

And set all McSidStreamidOverrideConfigPcie5* to 0x0000007f in bootloader/t186ref/BCT/tegra194-memcfg-sw-override.cfg

Topic		Replies	Views
Data transfer from EP using EP DMA Jetson AGX Xavier pcie	6	1406	November 17, 2021
Iommu unhandled context fault during DMA transfer Jetson TX2 pcie	9	1742	October 18, 2021
What is the current status of PCIe DMA? Jetson TX1	21	8043	October 18, 2021
Altera FPGA DMA to TX2 via PCIe problem Jetson TX2	18	3560	October 18, 2021
pcie smmu issue Jetson AGX Xavier	7	5538	October 18, 2021
iommu unhandled context fault on PCI device DMA Jetson TX2	21	9276	October 18, 2021
How to Carry out DMA transfer when sending data using PCIe from NVIDIA Root Port to a custom end point Jetson AGX Xavier pcie	16	3342	August 3, 2023
PCIe ram share between two jetson NX, but I cann't r/w ram at second page in rp side Jetson Xavier NX pcie	9	1131	October 18, 2021
FPGA EP DMA to Xavier(RC), data is written to nowhere Jetson AGX Xavier pcie	2	596	June 9, 2022
Xavier PCIe share memory access issue Jetson AGX Xavier pcie	3	1460	October 18, 2021