PCI hotplug: add pci_configure_slot()

This patch adds a new pci_configure_slot() function that programs the
PCI bus characteristics for a newly-added device.  This is based on
code in pciehp_pci.c, but should be generic enough to be used by pciehp,
shpchp, and acpiphp.

The hotplug_params struct and the program_hpp_typeX() functions are based
on the ACPI definitions, but they aren't really ACPI-specific, and there's
no alternate implementation, so I don't see the need to abstract them yet.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Reviewed-by: Alex Chiang <achiang@hp.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h
index 0a7c2401d945..1cdef8317377 100644
--- a/include/linux/pci_hotplug.h
+++ b/include/linux/pci_hotplug.h
@@ -232,6 +232,15 @@ int acpi_get_hp_params_from_firmware(struct pci_dev *dev,
 int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags);
 int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle);
 int acpi_pci_detect_ejectable(acpi_handle handle);
+#define pci_get_hp_params(dev, hpp)  acpi_get_hp_params_from_firmware(dev, hpp)
+#else
+static inline int pci_get_hp_params(struct pci_dev *dev,
+                                    struct hotplug_params *hpp)
+{
+        return -ENODEV;
+}
 #endif
+
+void pci_configure_slot(struct pci_dev *dev);
 #endif