diff options
| author | Jerome Brunet <jbrunet@baylibre.com> | 2025-07-31 14:49:01 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-08-13 16:25:10 -0500 |
| commit | 152a09361bb2b0679277406be43d797d05e2104b (patch) | |
| tree | 450b6869c6f98466def1d1db403b8794006fb173 | |
| parent | 1ad82f9db13d85667366044acdfb02009d576c5a (diff) | |
Documentation: PCI: endpoint: Document BAR assignment
It is now possible to assign BARs while creating a vNTB endpoint function.
Update the documentation accordingly.
Suggested-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250731-vntb-doc-v1-1-95a0e0cd28d0@baylibre.com
| -rw-r--r-- | Documentation/PCI/endpoint/pci-vntb-howto.rst | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/PCI/endpoint/pci-vntb-howto.rst b/Documentation/PCI/endpoint/pci-vntb-howto.rst index 70d3bc90893f..9a7a2f0a6849 100644 --- a/Documentation/PCI/endpoint/pci-vntb-howto.rst +++ b/Documentation/PCI/endpoint/pci-vntb-howto.rst @@ -90,8 +90,9 @@ of the function device and is populated with the following NTB specific attributes that can be configured by the user:: # ls functions/pci_epf_vntb/func1/pci_epf_vntb.0/ - db_count mw1 mw2 mw3 mw4 num_mws - spad_count + ctrl_bar db_count mw1_bar mw2_bar mw3_bar mw4_bar spad_count + db_bar mw1 mw2 mw3 mw4 num_mws vbus_number + vntb_vid vntb_pid A sample configuration for NTB function is given below:: @@ -100,6 +101,10 @@ A sample configuration for NTB function is given below:: # echo 1 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/num_mws # echo 0x100000 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/mw1 +By default, each construct is assigned a BAR, as needed and in order. +Should a specific BAR setup be required by the platform, BAR may be assigned +to each construct using the related ``XYZ_bar`` entry. + A sample configuration for virtual NTB driver for virtual PCI bus:: # echo 0x1957 > functions/pci_epf_vntb/func1/pci_epf_vntb.0/vntb_vid |