pci_epc_map_addr(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 NAME 🌸

okay bestie, welcome to pci_epc_map_addr(9) from the Kernel API Manual — this is the function that maps a CPU address to a PCI address. no cap, that's the whole name ✅

✨ SYNOPSIS ✨

here's the exact signature, don't @ me:

int pci_epc_map_addr (struct pci_epc *epc , u8 func_no , u8 vfunc_no ,
phys_addr_t phys_addr , u64 pci_addr , size_t size );

🎀 ARGUMENTS 🎀

  • epc — the EPC device on which address is allocated 👑
  • func_no — the physical endpoint function number in the EPC device
  • vfunc_no — the virtual endpoint function number in the physical function
  • phys_addr — physical address of the local system
  • pci_addr — PCI address to which the physical address should be mapped
  • size — the size of the allocation

💅 DESCRIPTION 💅

invoke this cutie to map CPU address with PCI address. that's the assignment, bestie: CPU address on one side, PCI address on the other, map achieved. ✨

🦋 SEE ALSO 🦋

the kernel file is ./drivers/pci/endpoint/pci-epc-core.c, and the whole bestie lineup is:

muah 💖 this page is from ./drivers/pci/endpoint, dated October 2026, and signed pci_epc_map_addr(9). 🫶✨

📦 where this page comes from