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authorDongdong Liu <liudongdong3@huawei.com>2016-12-01 09:33:42 +0300
committerBjorn Helgaas <helgaas@kernel.org>2016-12-06 22:45:49 +0300
commit169de969c0188be69bd5ff1e148d42a49bf47738 (patch)
tree431b32c16b0fd30d5ed0cc8dd64eb6de5d39cea2 /drivers/pci/pci.h
parent5b69b85ba1ddd36be01f5c57830b37a3c8256009 (diff)
downloadlinux-169de969c0188be69bd5ff1e148d42a49bf47738.tar.xz
PCI/ACPI: Provide acpi_get_rc_resources() for ARM64 platform
The acpi_get_rc_resources() is used to get the RC register address that can not be described in MCFG. It takes the _HID & segment to look for and outputs the RC address resource. Use PNP0C02 devices to describe such RC address resource. Use _UID to match segment to tell which root bus the PNP0C02 resource belongs to. [bhelgaas: add dev argument, wrap in #ifdef CONFIG_PCI_QUIRKS] Signed-off-by: Dongdong Liu <liudongdong3@huawei.com> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pci.h')
-rw-r--r--drivers/pci/pci.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 451856210e18..72b128efa344 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -356,4 +356,9 @@ static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
}
#endif
+#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
+int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
+ struct resource *res);
+#endif
+
#endif /* DRIVERS_PCI_H */