summaryrefslogtreecommitdiff
path: root/drivers/pci/setup-bus.c
diff options
context:
space:
mode:
authorGavin Shan <gwshan@linux.vnet.ibm.com>2016-05-20 09:41:25 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2016-06-21 08:30:51 +0300
commitd366d28cd1325f11d582ec6d4a14b8329d3e1a20 (patch)
tree294190afc61c7a8ab26c1a7e2b02fb311397261e /drivers/pci/setup-bus.c
parentf8ab481066e7246e4b272233aa0b6948f5069f41 (diff)
downloadlinux-d366d28cd1325f11d582ec6d4a14b8329d3e1a20.tar.xz
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>
Diffstat (limited to 'drivers/pci/setup-bus.c')
-rw-r--r--drivers/pci/setup-bus.c5
1 files changed, 5 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);
}