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

[Wilson_Lin]

Hi Kayccc,

Thanks reply.

I’m following this topic to add patch, and use iommu_iova_to_phys() to get physical address.

Xavier PCIe share memory access issue

I’m facing Xavier PCIe communication issue between two Xavier(Endpoint & Rootport system). I applied both endpoint and rootport patch from the following link to increase the memory size from 64KB to 512MB. Xavier pcie endpoint share memory size And I followed the below procedure Boot EP system Configure and enable the PCIe endpoint mode Boot RP system In endpoint side, I got the IOVM address [ 2118.360255] pci_epf_nv_test pci_epf_nv_test.0: BAR0 RAM IOVA: 0xe0000000 But PCIe is not enum…

But in my test. The size of BAR0 is still very small not 512MB.