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-rw-r--r--arch/powerpc/platforms/pseries/eeh.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 48fbd442e9d..63e23062e98 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -580,6 +580,36 @@ rtas_pci_slot_reset(struct pci_dn *pdn, int state)
}
/**
+ * pcibios_set_pcie_slot_reset - Set PCI-E reset state
+ * @dev: pci device struct
+ * @state: reset state to enter
+ *
+ * Return value:
+ * 0 if success
+ **/
+int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state)
+{
+ struct device_node *dn = pci_device_to_OF_node(dev);
+ struct pci_dn *pdn = PCI_DN(dn);
+
+ switch (state) {
+ case pcie_deassert_reset:
+ rtas_pci_slot_reset(pdn, 0);
+ break;
+ case pcie_hot_reset:
+ rtas_pci_slot_reset(pdn, 1);
+ break;
+ case pcie_warm_reset:
+ rtas_pci_slot_reset(pdn, 3);
+ break;
+ default:
+ return -EINVAL;
+ };
+
+ return 0;
+}
+
+/**
* rtas_set_slot_reset -- assert the pci #RST line for 1/4 second
* @pdn: pci device node to be reset.
*