Commit d366d28c authored by Gavin Shan's avatar Gavin Shan Committed by Michael Ellerman

PCI: Add pcibios_setup_bridge()

Currently, PowerPC PowerNV platform utilizes ppc_md.pcibios_fixup(),
which is called for once after PCI probing and resource assignment
are completed, to allocate platform required resources for PCI devices:
PE#, IO and MMIO mapping, DMA address translation (TCE) table etc.
Obviously, it's not hotplug friendly.

This adds weak function pcibios_setup_bridge(), which is called by
pci_setup_bridge(). PowerPC PowerNV platform will reuse the function
to assign above platform required resources to newly plugged PCI devices
during PCI hotplug in subsequent patches.
Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent f8ab4810
...@@ -695,11 +695,16 @@ static void __pci_setup_bridge(struct pci_bus *bus, unsigned long type) ...@@ -695,11 +695,16 @@ static void __pci_setup_bridge(struct pci_bus *bus, unsigned long type)
pci_write_config_word(bridge, PCI_BRIDGE_CONTROL, bus->bridge_ctl); pci_write_config_word(bridge, PCI_BRIDGE_CONTROL, bus->bridge_ctl);
} }
void __weak pcibios_setup_bridge(struct pci_bus *bus, unsigned long type)
{
}
void pci_setup_bridge(struct pci_bus *bus) void pci_setup_bridge(struct pci_bus *bus)
{ {
unsigned long type = IORESOURCE_IO | IORESOURCE_MEM | unsigned long type = IORESOURCE_IO | IORESOURCE_MEM |
IORESOURCE_PREFETCH; IORESOURCE_PREFETCH;
pcibios_setup_bridge(bus, type);
__pci_setup_bridge(bus, type); __pci_setup_bridge(bus, type);
} }
......
...@@ -854,6 +854,7 @@ void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); ...@@ -854,6 +854,7 @@ void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev);
void pci_stop_root_bus(struct pci_bus *bus); void pci_stop_root_bus(struct pci_bus *bus);
void pci_remove_root_bus(struct pci_bus *bus); void pci_remove_root_bus(struct pci_bus *bus);
void pci_setup_cardbus(struct pci_bus *bus); void pci_setup_cardbus(struct pci_bus *bus);
void pcibios_setup_bridge(struct pci_bus *bus, unsigned long type);
void pci_sort_breadthfirst(void); void pci_sort_breadthfirst(void);
#define dev_is_pci(d) ((d)->bus == &pci_bus_type) #define dev_is_pci(d) ((d)->bus == &pci_bus_type)
#define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
......
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