| Message ID | 20190301160440.26262-10-s.miroshnichenko@yadro.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | powerpc/powernv/pci: Make hotplug self-sufficient, independent of FW and DT | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | next/apply_patch Successfully applied |
| snowpatch_ozlabs/build-ppc64le | fail | build failed! |
| snowpatch_ozlabs/build-ppc64be | fail | build failed! |
| snowpatch_ozlabs/build-ppc64e | warning | build succeeded but added 1 new sparse warning(s) |
| snowpatch_ozlabs/build-pmac32 | warning | build succeeded but added 18 new sparse warning(s) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 15 lines checked |
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c index b1dc788865b9..b823c4177184 100644 --- a/arch/powerpc/kernel/pci_dn.c +++ b/arch/powerpc/kernel/pci_dn.c @@ -601,3 +601,15 @@ static void pci_dev_pdn_setup(struct pci_dev *pdev) pdev->dev.archdata.pci_data = pdn; } DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, pci_dev_pdn_setup); + +char * __init pcibios_setup(char *str) +{ + if (!strncmp(str, "realloc=", 8)) { + if (!strncmp(str + 8, "on", 2)) + pci_add_flags(PCI_REASSIGN_ALL_BUS); + } else if (!strncmp(str, "realloc", 7)) { + pci_add_flags(PCI_REASSIGN_ALL_BUS); + } + + return str; +}
When the pci=realloc command line switch is enabled (which should only be set when working on on top of the skiboot with the "core/pci: Sync VFs and the changes of bdfns between the firmware and the OS" patch serie applied), PowerNV will not depend on PCIe topology info from DT anymore. This makes possible to re-enumerate the fabric, assign the new bus numbers and switch from the pnv_php module to the standard pciehp driver for PCIe hotplug functionality. Signed-off-by: Sergey Miroshnichenko <s.miroshnichenko@yadro.com> --- arch/powerpc/kernel/pci_dn.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)