1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef __OF_IRQ_H 3#define __OF_IRQ_H 4 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 machines 16 */ 17#define OF_IMAP_OLDWORLD_MAC 0x00000001 18#define OF_IMAP_NO_PHANDLE 0x00000002 19 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_IRQ 41extern 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#else 59static 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#endif 109 110#if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC) 111/* 112 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC 113 * 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