From 6c0a11c118471f79795202348fbd0e6580341794 Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Thu, 19 Jul 2007 15:29:53 -0500 Subject: [PATCH] [POWERPC] Fixup resources on pci_bus for PCIe PHB when no device is connected On the 85xx/86xx PCIe controllers if there is no device connected to the PHB we will still allocate a pci_bus for downstream bus of the virtual P2P bridge. However the resources allocated to the downstream bus are not correct and so we just mimic the resources from the upstream pci_bus. Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/mpc85xx_cds.c | 1 + arch/powerpc/platforms/86xx/mpc86xx_hpcn.c | 2 +- arch/powerpc/sysdev/fsl_pci.c | 14 ++++++++++++++ arch/powerpc/sysdev/fsl_pci.h | 1 + 4 files changed, 17 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c index 2539bb56069..9b559ebc66f 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c @@ -272,4 +272,5 @@ define_machine(mpc85xx_cds) { .restart = mpc85xx_restart, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, }; diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c index e67e10d3272..e9eaa0749ae 100644 --- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c +++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c @@ -431,7 +431,6 @@ mpc86xx_time_init(void) return 0; } - define_machine(mpc86xx_hpcn) { .name = "MPC86xx HPCN", .probe = mpc86xx_hpcn_probe, @@ -443,4 +442,5 @@ define_machine(mpc86xx_hpcn) { .time_init = mpc86xx_time_init, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, }; diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 2eefcde5b0d..faafae601a7 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -142,6 +142,20 @@ int __init fsl_pcie_check_link(struct pci_controller *hose) return 0; } +void fsl_pcibios_fixup_bus(struct pci_bus *bus) +{ + struct pci_controller *hose = (struct pci_controller *) bus->sysdata; + int i; + + /* deal with bogus pci_bus when we don't have anything connected on PCIe */ + if (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK) { + if (bus->parent) { + for (i = 0; i < 4; ++i) + bus->resource[i] = bus->parent->resource[i]; + } + } +} + int __init fsl_add_bridge(struct device_node *dev, int is_primary) { int len; diff --git a/arch/powerpc/sysdev/fsl_pci.h b/arch/powerpc/sysdev/fsl_pci.h index 700d4782799..37b04ad2657 100644 --- a/arch/powerpc/sysdev/fsl_pci.h +++ b/arch/powerpc/sysdev/fsl_pci.h @@ -82,6 +82,7 @@ struct ccsr_pci { }; extern int fsl_add_bridge(struct device_node *dev, int is_primary); +extern void fsl_pcibios_fixup_bus(struct pci_bus *bus); #endif /* __POWERPC_FSL_PCI_H */ #endif /* __KERNEL__ */ -- 2.43.2