genirq: Provide default callbacks for msi_domain_ops

[pandora-kernel.git] / include / linux / msi.h

diff --git a/include/linux/msi.h b/include/linux/msi.h
index 7a93a98..0098e2c 100644 (file)
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -116,6 +116,7 @@ struct msi_controller {
 
 #ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
 
+#include <linux/irqhandler.h>
 #include <asm/msi.h>
 
 struct irq_domain;
@@ -142,11 +143,12 @@ struct msi_domain_info;
  * interfaces which are based on msi_desc.
  */
 struct msi_domain_ops {
-       irq_hw_number_t (*get_hwirq)(struct msi_domain_info *info, void *arg);
+       irq_hw_number_t (*get_hwirq)(struct msi_domain_info *info,
+                                    msi_alloc_info_t *arg);
        int             (*msi_init)(struct irq_domain *domain,
                                    struct msi_domain_info *info,
                                    unsigned int virq, irq_hw_number_t hwirq,
-                                   void *arg);
+                                   msi_alloc_info_t *arg);
        void            (*msi_free)(struct irq_domain *domain,
                                    struct msi_domain_info *info,
                                    unsigned int virq);
@@ -165,16 +167,46 @@ struct msi_domain_ops {
 
 /**
  * struct msi_domain_info - MSI interrupt domain data
- * @ops:       The callback data structure
- * @chip:      The associated interrupt chip
- * @data:      Domain specific data
+ * @flags:             Flags to decribe features and capabilities
+ * @ops:               The callback data structure
+ * @chip:              Optional: associated interrupt chip
+ * @chip_data:         Optional: associated interrupt chip data
+ * @handler:           Optional: associated interrupt flow handler
+ * @handler_data:      Optional: associated interrupt flow handler data
+ * @handler_name:      Optional: associated interrupt flow handler name
+ * @data:              Optional: domain specific data
  */
 struct msi_domain_info {
+       u32                     flags;
        struct msi_domain_ops   *ops;
        struct irq_chip         *chip;
+       void                    *chip_data;
+       irq_flow_handler_t      handler;
+       void                    *handler_data;
+       const char              *handler_name;
        void                    *data;
 };
 
+/* Flags for msi_domain_info */
+enum {
+       /*
+        * Init non implemented ops callbacks with default MSI domain
+        * callbacks.
+        */
+       MSI_FLAG_USE_DEF_DOM_OPS        = (1 << 0),
+       /*
+        * Init non implemented chip callbacks with default MSI chip
+        * callbacks.
+        */
+       MSI_FLAG_USE_DEF_CHIP_OPS       = (1 << 1),
+       /* Build identity map between hwirq and irq */
+       MSI_FLAG_IDENTITY_MAP           = (1 << 2),
+       /* Support multiple PCI MSI interrupts */
+       MSI_FLAG_MULTI_PCI_MSI          = (1 << 3),
+       /* Support PCI MSIX interrupts */
+       MSI_FLAG_PCI_MSIX               = (1 << 4),
+};
+
 int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,
                            bool force);