89 строки
2.8 KiB
C
89 строки
2.8 KiB
C
#ifndef __OF_IRQ_H
|
|
#define __OF_IRQ_H
|
|
|
|
#if defined(CONFIG_OF)
|
|
struct of_irq;
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/irqdomain.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/of.h>
|
|
|
|
/*
|
|
* irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
|
|
* implements it differently. However, the prototype is the same for all,
|
|
* so declare it here regardless of the CONFIG_OF_IRQ setting.
|
|
*/
|
|
extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
|
|
|
|
#if defined(CONFIG_OF_IRQ)
|
|
/**
|
|
* of_irq - container for device_node/irq_specifier pair for an irq controller
|
|
* @controller: pointer to interrupt controller device tree node
|
|
* @size: size of interrupt specifier
|
|
* @specifier: array of cells @size long specifing the specific interrupt
|
|
*
|
|
* This structure is returned when an interrupt is mapped. The controller
|
|
* field needs to be put() after use
|
|
*/
|
|
#define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */
|
|
struct of_irq {
|
|
struct device_node *controller; /* Interrupt controller node */
|
|
u32 size; /* Specifier size */
|
|
u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
|
|
};
|
|
|
|
typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
|
|
|
|
/*
|
|
* Workarounds only applied to 32bit powermac machines
|
|
*/
|
|
#define OF_IMAP_OLDWORLD_MAC 0x00000001
|
|
#define OF_IMAP_NO_PHANDLE 0x00000002
|
|
|
|
#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
|
|
extern unsigned int of_irq_workarounds;
|
|
extern struct device_node *of_irq_dflt_pic;
|
|
extern int of_irq_map_oldworld(struct device_node *device, int index,
|
|
struct of_irq *out_irq);
|
|
#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
|
|
#define of_irq_workarounds (0)
|
|
#define of_irq_dflt_pic (NULL)
|
|
static inline int of_irq_map_oldworld(struct device_node *device, int index,
|
|
struct of_irq *out_irq)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
|
|
|
|
|
|
extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
|
|
u32 ointsize, const u32 *addr,
|
|
struct of_irq *out_irq);
|
|
extern int of_irq_map_one(struct device_node *device, int index,
|
|
struct of_irq *out_irq);
|
|
extern unsigned int irq_create_of_mapping(struct device_node *controller,
|
|
const u32 *intspec,
|
|
unsigned int intsize);
|
|
extern int of_irq_to_resource(struct device_node *dev, int index,
|
|
struct resource *r);
|
|
extern int of_irq_count(struct device_node *dev);
|
|
extern int of_irq_to_resource_table(struct device_node *dev,
|
|
struct resource *res, int nr_irqs);
|
|
extern struct device_node *of_irq_find_parent(struct device_node *child);
|
|
|
|
extern void of_irq_init(const struct of_device_id *matches);
|
|
|
|
#endif /* CONFIG_OF_IRQ */
|
|
|
|
#else /* !CONFIG_OF */
|
|
static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
|
|
int index)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* !CONFIG_OF */
|
|
|
|
#endif /* __OF_IRQ_H */
|