How to read/write iova(I/O Virtual Address) of PCIE endpoind mode

[Wilson_Lin]

Hi Nvidia,

I’m testing the endpoint mode of PCIE,
I add the patch of the topic.

How do I increase size of BAR0 in Endpoint Mode on Orin NX

Hi Nvidia, I’m following this topic to modify pci-epf-nv-test.c driver. https://forums.developer.nvidia.com/t/increasing-size-of-bar0-in-endpoint-mode/232498 But I have same question od this topic. https://forums.developer.nvidia.com/t/in-pcie-endpoint-and-rootpoint-modes-after-increasing-the-bar0-size-how-to-test-the-data-communication/261514 I can’t see the BAR0 RAM physical address, too. wilson@OrinNX-EP:~$ sudo dmesg | grep pci_epf_nv_test [ 522.603944] pci_epf_nv_test pci_epf_nv_test…

The patch work fine and I got the iova of EP side.
But how cauld I read/write the IOVA of PCIE.

wilson@OrinNX-EP:~$ sudo dmesg | grep pci_epf_nv_test
[  522.603944] pci_epf_nv_test pci_epf_nv_test.0: BAR0 RAM IOVA: 0xe0000000