projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e3873444 GL |
1 | #ifndef __OF_IRQ_H |
| 2 | #define __OF_IRQ_H | |
| 3 | ||
| 4 | #if defined(CONFIG_OF) | |
| 5 | struct of_irq; | |
| 6 | #include <linux/types.h> | |
| 7dc2e113 | 7 | #include <linux/errno.h> |
| 530719b2 | 8 | #include <linux/irq.h> |
| d593f25f | 9 | #include <linux/irqdomain.h> |
| 7dc2e113 | 10 | #include <linux/ioport.h> |
| e3873444 GL |
11 | #include <linux/of.h> |
| 12 | ||
| 13 | /* | |
| 766644d2 | 14 | * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC |
| e3873444 GL |
15 | * implements it differently. However, the prototype is the same for all, |
| 16 | * so declare it here regardless of the CONFIG_OF_IRQ setting. | |
| 17 | */ | |
| 18 | extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); | |
| 19 | ||
| 20 | #if defined(CONFIG_OF_IRQ) | |
| 21 | /** | |
| 22 | * of_irq - container for device_node/irq_specifier pair for an irq controller | |
| 23 | * @controller: pointer to interrupt controller device tree node | |
| 24 | * @size: size of interrupt specifier | |
| 25 | * @specifier: array of cells @size long specifing the specific interrupt | |
| 26 | * | |
| 27 | * This structure is returned when an interrupt is mapped. The controller | |
| 28 | * field needs to be put() after use | |
| 29 | */ | |
| 30 | #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ | |
| 31 | struct of_irq { | |
| 32 | struct device_node *controller; /* Interrupt controller node */ | |
| 33 | u32 size; /* Specifier size */ | |
| 34 | u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ | |
| 35 | }; | |
| 36 | ||
| c71a54b0 RH |
37 | typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); |
| 38 | ||
| 7dc2e113 GL |
39 | /* |
| 40 | * Workarounds only applied to 32bit powermac machines | |
| 41 | */ | |
| 42 | #define OF_IMAP_OLDWORLD_MAC 0x00000001 | |
| 43 | #define OF_IMAP_NO_PHANDLE 0x00000002 | |
| 44 | ||
| 45 | #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) | |
| 46 | extern unsigned int of_irq_workarounds; | |
| 47 | extern struct device_node *of_irq_dflt_pic; | |
| 48 | extern int of_irq_map_oldworld(struct device_node *device, int index, | |
| 49 | struct of_irq *out_irq); | |
| 50 | #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ | |
| 51 | #define of_irq_workarounds (0) | |
| 52 | #define of_irq_dflt_pic (NULL) | |
| 53 | static inline int of_irq_map_oldworld(struct device_node *device, int index, | |
| 54 | struct of_irq *out_irq) | |
| 55 | { | |
| 56 | return -EINVAL; | |
| 57 | } | |
| 58 | #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ | |
| 59 | ||
| 60 | ||
| 61 | extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec, | |
| 62 | u32 ointsize, const u32 *addr, | |
| 63 | struct of_irq *out_irq); | |
| e3873444 GL |
64 | extern int of_irq_map_one(struct device_node *device, int index, |
| 65 | struct of_irq *out_irq); | |
| 66 | extern unsigned int irq_create_of_mapping(struct device_node *controller, | |
| 67 | const u32 *intspec, | |
| 68 | unsigned int intsize); | |
| 7dc2e113 GL |
69 | extern int of_irq_to_resource(struct device_node *dev, int index, |
| 70 | struct resource *r); | |
| 52f6537c AS |
71 | extern int of_irq_count(struct device_node *dev); |
| 72 | extern int of_irq_to_resource_table(struct device_node *dev, | |
| 73 | struct resource *res, int nr_irqs); | |
| 0b2e9a8e | 74 | extern struct device_node *of_irq_find_parent(struct device_node *child); |
| e3873444 | 75 | |
| c71a54b0 | 76 | extern void of_irq_init(const struct of_device_id *matches); |
| 08a543ad | 77 | |
| e3873444 | 78 | #endif /* CONFIG_OF_IRQ */ |
| 766644d2 TA |
79 | |
| 80 | #else /* !CONFIG_OF */ | |
| 81 | static inline unsigned int irq_of_parse_and_map(struct device_node *dev, | |
| 82 | int index) | |
| 83 | { | |
| 84 | return 0; | |
| 85 | } | |
| 86 | #endif /* !CONFIG_OF */ | |
| 87 | ||
| e3873444 | 88 | #endif /* __OF_IRQ_H */ |