[POWERPC] Remove the global dma_direct_offset

[safe/jmp/linux-2.6] / include / asm-powerpc / irq.h

diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h
index f960f53..1392db4 100644 (file)
--- a/include/asm-powerpc/irq.h
+++ b/include/asm-powerpc/irq.h
@@ -89,6 +89,9 @@ struct irq_host_ops {
        /* Dispose of such a mapping */
        void (*unmap)(struct irq_host *h, unsigned int virq);
 
+       /* Update of such a mapping  */
+       void (*remap)(struct irq_host *h, unsigned int virq, irq_hw_number_t hw);
+
        /* Translate device-tree interrupt specifier from raw format coming
         * from the firmware to a irq_hw_number_t (interrupt line number) and
         * type (sense) that can be passed to set_irq_type(). In the absence
@@ -121,6 +124,9 @@ struct irq_host {
        struct irq_host_ops     *ops;
        void                    *host_data;
        irq_hw_number_t         inval_irq;
+
+       /* Optional device node pointer */
+       struct device_node      *of_node;
 };
 
 /* The main irq map itself is an array of NR_IRQ entries containing the
@@ -135,10 +141,11 @@ struct irq_map_entry {
 
 extern struct irq_map_entry irq_map[NR_IRQS];
 
+extern irq_hw_number_t virq_to_hw(unsigned int virq);
 
 /**
  * irq_alloc_host - Allocate a new irq_host data structure
- * @node: device-tree node of the interrupt controller
+ * @of_node: optional device-tree node of the interrupt controller
  * @revmap_type: type of reverse mapping to use
  * @revmap_arg: for IRQ_HOST_MAP_LINEAR linear only: size of the map
  * @ops: map/unmap host callbacks
@@ -152,7 +159,8 @@ extern struct irq_map_entry irq_map[NR_IRQS];
  * later during boot automatically (the reverse mapping will use the slow path
  * until that happens).
  */
-extern struct irq_host *irq_alloc_host(unsigned int revmap_type,
+extern struct irq_host *irq_alloc_host(struct device_node *of_node,
+                                      unsigned int revmap_type,
                                       unsigned int revmap_arg,
                                       struct irq_host_ops *ops,
                                       irq_hw_number_t inval_irq);
@@ -219,6 +227,15 @@ extern void irq_dispose_mapping(unsigned int virq);
 extern unsigned int irq_find_mapping(struct irq_host *host,
                                     irq_hw_number_t hwirq);
 
+/**
+ * irq_create_direct_mapping - Allocate a virq for direct mapping
+ * @host: host to allocate the virq for or NULL for default host
+ *
+ * This routine is used for irq controllers which can choose the hardware
+ * interrupt numbers they generate. In such a case it's simplest to use
+ * the linux virq as the hardware interrupt number.
+ */
+extern unsigned int irq_create_direct_mapping(struct irq_host *host);
 
 /**
  * irq_radix_revmap - Find a linux virq from a hw irq number.