Merge tag 'renesas-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...

[cascardo/linux.git] / include / linux / msi.h

diff --git a/include/linux/msi.h b/include/linux/msi.h
index ee66f3a..b17ead8 100644 (file)
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -51,12 +51,31 @@ struct msi_desc {
 };
 
 /*
- * The arch hook for setup up msi irqs
+ * The arch hooks to setup up msi irqs. Those functions are
+ * implemented as weak symbols so that they /can/ be overriden by
+ * architecture specific code if needed.
  */
 int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc);
 void arch_teardown_msi_irq(unsigned int irq);
 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 void arch_teardown_msi_irqs(struct pci_dev *dev);
 int arch_msi_check_device(struct pci_dev* dev, int nvec, int type);
+void arch_restore_msi_irqs(struct pci_dev *dev, int irq);
+
+void default_teardown_msi_irqs(struct pci_dev *dev);
+void default_restore_msi_irqs(struct pci_dev *dev, int irq);
+
+struct msi_chip {
+       struct module *owner;
+       struct device *dev;
+       struct device_node *of_node;
+       struct list_head list;
+
+       int (*setup_irq)(struct msi_chip *chip, struct pci_dev *dev,
+                        struct msi_desc *desc);
+       void (*teardown_irq)(struct msi_chip *chip, unsigned int irq);
+       int (*check_device)(struct msi_chip *chip, struct pci_dev *dev,
+                           int nvec, int type);
+};
 
 #endif /* LINUX_MSI_H */