Re: [PATCH v13 2/5] PCI/TPH: Add requester/completer type helpers
fengchengwen <[email protected]>
| Newsgroups | gmane.linux.drivers.rdma,gmane.comp.emulators.kvm.devel,gmane.linux.kernel.pci,gmane.comp.video.dri.devel |
|---|---|
| Message-ID | <[email protected]> |
Acked-by: Chengwen Feng <[email protected]> On 8/1/2026 5:15 AM, Zhiping Zhang wrote: > Add pcie_tph_enabled_req_type() so drivers can query the enabled TPH > requester mode without reaching into pci_dev internals. > > Add pcie_tph_completer_type() so drivers that publish TPH metadata for a > device acting as a completer can gate on the "TPH Completer Supported" > field of Device Capabilities 2 (bits 13:12, PCI_EXP_DEVCAP2_TPH_COMP_MASK) > rather than reusing requester-side state. It applies the same reserved- > encoding fold as get_rp_completer_type(), inlined, so the reserved 0b10 > value never reaches callers. > > This keeps pci_dev::tph_req_type and the completer-capability decode > inside the PCI/TPH code and provides !CONFIG_PCIE_TPH stubs for callers. > > Signed-off-by: Zhiping Zhang <[email protected]>