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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __OF_IRQ_H3#define __OF_IRQ_H4 5#include <linux/types.h>6#include <linux/errno.h>7#include <linux/irq.h>8#include <linux/irqdomain.h>9#include <linux/ioport.h>10#include <linux/of.h>11 12typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);13 14/*15 * Workarounds only applied to 32bit powermac machines16 */17#define OF_IMAP_OLDWORLD_MAC 0x0000000118#define OF_IMAP_NO_PHANDLE 0x0000000219 20#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)21extern unsigned int of_irq_workarounds;22extern struct device_node *of_irq_dflt_pic;23int of_irq_parse_oldworld(const struct device_node *device, int index,24 struct of_phandle_args *out_irq);25#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */26#define of_irq_workarounds (0)27#define of_irq_dflt_pic (NULL)28static inline int of_irq_parse_oldworld(const struct device_node *device, int index,29 struct of_phandle_args *out_irq)30{31 return -EINVAL;32}33#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */34 35extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);36extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);37extern int of_irq_to_resource(struct device_node *dev, int index,38 struct resource *r);39 40#ifdef CONFIG_OF_IRQ41extern void of_irq_init(const struct of_device_id *matches);42extern int of_irq_parse_one(struct device_node *device, int index,43 struct of_phandle_args *out_irq);44extern int of_irq_count(struct device_node *dev);45extern int of_irq_get(struct device_node *dev, int index);46extern int of_irq_get_byname(struct device_node *dev, const char *name);47extern int of_irq_to_resource_table(struct device_node *dev,48 struct resource *res, int nr_irqs);49extern struct device_node *of_irq_find_parent(struct device_node *child);50extern struct irq_domain *of_msi_get_domain(struct device *dev,51 struct device_node *np,52 enum irq_domain_bus_token token);53extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,54 u32 id,55 u32 bus_token);56extern void of_msi_configure(struct device *dev, struct device_node *np);57u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in);58#else59static inline void of_irq_init(const struct of_device_id *matches)60{61}62static inline int of_irq_parse_one(struct device_node *device, int index,63 struct of_phandle_args *out_irq)64{65 return -EINVAL;66}67static inline int of_irq_count(struct device_node *dev)68{69 return 0;70}71static inline int of_irq_get(struct device_node *dev, int index)72{73 return 0;74}75static inline int of_irq_get_byname(struct device_node *dev, const char *name)76{77 return 0;78}79static inline int of_irq_to_resource_table(struct device_node *dev,80 struct resource *res, int nr_irqs)81{82 return 0;83}84static inline void *of_irq_find_parent(struct device_node *child)85{86 return NULL;87}88 89static inline struct irq_domain *of_msi_get_domain(struct device *dev,90 struct device_node *np,91 enum irq_domain_bus_token token)92{93 return NULL;94}95static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,96 u32 id, u32 bus_token)97{98 return NULL;99}100static inline void of_msi_configure(struct device *dev, struct device_node *np)101{102}103static inline u32 of_msi_map_id(struct device *dev,104 struct device_node *msi_np, u32 id_in)105{106 return id_in;107}108#endif109 110#if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC)111/*112 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC113 * implements it differently. However, the prototype is the same for all,114 * so declare it here regardless of the CONFIG_OF_IRQ setting.115 */116extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);117 118#else /* !CONFIG_OF && !CONFIG_SPARC */119static inline unsigned int irq_of_parse_and_map(struct device_node *dev,120 int index)121{122 return 0;123}124#endif /* !CONFIG_OF */125 126#endif /* __OF_IRQ_H */127