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| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2016-05-20 16:41:25 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-06-21 15:30:51 +1000 |
| commit | d366d28cd1325f11d582ec6d4a14b8329d3e1a20 (patch) | |
| tree | 294190afc61c7a8ab26c1a7e2b02fb311397261e | |
| parent | f8ab481066e7246e4b272233aa0b6948f5069f41 (diff) | |
| download | linux-d366d28cd1325f11d582ec6d4a14b8329d3e1a20.tar.gz linux-d366d28cd1325f11d582ec6d4a14b8329d3e1a20.tar.bz2 linux-d366d28cd1325f11d582ec6d4a14b8329d3e1a20.zip | |
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: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | drivers/pci/setup-bus.c | 5 | ||||
| -rw-r--r-- | include/linux/pci.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 55641a39a3e9..d678c46e5f03 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -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); } +void __weak pcibios_setup_bridge(struct pci_bus *bus, unsigned long type) +{ +} + void pci_setup_bridge(struct pci_bus *bus) { unsigned long type = IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH; + pcibios_setup_bridge(bus, type); __pci_setup_bridge(bus, type); } diff --git a/include/linux/pci.h b/include/linux/pci.h index b67e4df20801..c40ac910cce4 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -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_remove_root_bus(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); #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)) |