[PATCH v3 4/6] powerpc/powernv/pci: Enable reassigning the bus numbers
From: Sergey Miroshnichenko <hidden>
Date: 2018-09-11 11:56:32
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
PowerNV doesn't depend on PCIe topology info from DT anymore, and now it is able to enumerate the fabric and assign the bus numbers. This is enabled by the pci=realloc command line switch. Signed-off-by: Sergey Miroshnichenko <redacted> --- arch/powerpc/kernel/pci_dn.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index 8bcf10fb13ad..863d00561c50 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c@@ -592,3 +592,15 @@ 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; +}
--
2.17.1