* 2 of the License, or (at your option) any later version.
*/
-#include <linux/config.h>
#include <linux/threads.h>
#include <linux/list.h>
#include <linux/radix-tree.h>
/* 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
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
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
* 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);
-/***
+/**
* irq_find_host - Locates a host for a given device node
* @node: device-tree node of the interrupt controller
*/
extern struct irq_host *irq_find_host(struct device_node *node);
-/***
+/**
* irq_set_default_host - Set a "default" host
* @host: default host pointer
*
extern void irq_set_default_host(struct irq_host *host);
-/***
+/**
* irq_set_virq_count - Set the maximum number of virt irqs
* @count: number of linux virtual irqs, capped with NR_IRQS
*
extern void irq_set_virq_count(unsigned int count);
-/***
+/**
* irq_create_mapping - Map a hardware interrupt into linux virq space
* @host: host owning this hardware interrupt or NULL for default host
* @hwirq: hardware irq number in that host space
irq_hw_number_t hwirq);
-/***
+/**
* irq_dispose_mapping - Unmap an interrupt
* @virq: linux virq number of the interrupt to unmap
*/
extern void irq_dispose_mapping(unsigned int virq);
-/***
+/**
* irq_find_mapping - Find a linux virq from an hw irq number.
* @host: host owning this hardware interrupt
* @hwirq: hardware irq number in that host space
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.
* @host: host owning this hardware interrupt
* @hwirq: hardware irq number in that host space
extern unsigned int irq_radix_revmap(struct irq_host *host,
irq_hw_number_t hwirq);
-/***
+/**
* irq_linear_revmap - Find a linux virq from a hw irq number.
* @host: host owning this hardware interrupt
* @hwirq: hardware irq number in that host space
-/***
+/**
* irq_alloc_virt - Allocate virtual irq numbers
* @host: host owning these new virtual irqs
* @count: number of consecutive numbers to allocate
unsigned int count,
unsigned int hint);
-/***
+/**
* irq_free_virt - Free virtual irq numbers
* @virq: virtual irq number of the first interrupt to free
* @count: number of interrupts to free
/* -- End OF helpers -- */
-/***
+/**
* irq_early_init - Init irq remapping subsystem
*/
extern void irq_early_init(void);
extern void irq_ctx_init(void);
extern void call_do_softirq(struct thread_info *tp);
-extern int call_handle_irq(int irq, void *p1, void *p2,
+extern int call_handle_irq(int irq, void *p1,
struct thread_info *tp, void *func);
#else
#define irq_ctx_init()