| | 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> |
| | 7 | #include <linux/errno.h> |
| | 8 | #include <linux/irq.h> |
| | 9 | #include <linux/ioport.h> |
| | 10 | #include <linux/of.h> |
| | 11 | |
| | 12 | /* |
| | 13 | * irq_of_parse_and_map() is used ba all OF enabled platforms; but SPARC |
| | 14 | * implements it differently. However, the prototype is the same for all, |
| | 15 | * so declare it here regardless of the CONFIG_OF_IRQ setting. |
| | 16 | */ |
| | 17 | extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); |
| | 18 | |
| | 19 | #if defined(CONFIG_OF_IRQ) |
| | 20 | /** |
| | 21 | * of_irq - container for device_node/irq_specifier pair for an irq controller |
| | 22 | * @controller: pointer to interrupt controller device tree node |
| | 23 | * @size: size of interrupt specifier |
| | 24 | * @specifier: array of cells @size long specifing the specific interrupt |
| | 25 | * |
| | 26 | * This structure is returned when an interrupt is mapped. The controller |
| | 27 | * field needs to be put() after use |
| | 28 | */ |
| | 29 | #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ |
| | 30 | struct of_irq { |
| | 31 | struct device_node *controller; /* Interrupt controller node */ |
| | 32 | u32 size; /* Specifier size */ |
| | 33 | u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ |
| | 34 | }; |
| | 35 | |
| | 36 | /* |
| | 37 | * Workarounds only applied to 32bit powermac machines |
| | 38 | */ |
| | 39 | #define OF_IMAP_OLDWORLD_MAC 0x00000001 |
| | 40 | #define OF_IMAP_NO_PHANDLE 0x00000002 |
| | 41 | |
| | 42 | #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) |
| | 43 | extern unsigned int of_irq_workarounds; |
| | 44 | extern struct device_node *of_irq_dflt_pic; |
| | 45 | extern int of_irq_map_oldworld(struct device_node *device, int index, |
| | 46 | struct of_irq *out_irq); |
| | 47 | #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
| | 48 | #define of_irq_workarounds (0) |
| | 49 | #define of_irq_dflt_pic (NULL) |
| | 50 | static inline int of_irq_map_oldworld(struct device_node *device, int index, |
| | 51 | struct of_irq *out_irq) |
| | 52 | { |
| | 53 | return -EINVAL; |
| | 54 | } |
| | 55 | #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
| | 56 | |
| | 57 | |
| | 58 | extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec, |
| | 59 | u32 ointsize, const u32 *addr, |
| | 60 | struct of_irq *out_irq); |
| | 61 | extern int of_irq_map_one(struct device_node *device, int index, |
| | 62 | struct of_irq *out_irq); |
| | 63 | extern unsigned int irq_create_of_mapping(struct device_node *controller, |
| | 64 | const u32 *intspec, |
| | 65 | unsigned int intsize); |
| | 66 | extern int of_irq_to_resource(struct device_node *dev, int index, |
| | 67 | struct resource *r); |
| | 68 | extern int of_irq_count(struct device_node *dev); |
| | 69 | extern int of_irq_to_resource_table(struct device_node *dev, |
| | 70 | struct resource *res, int nr_irqs); |
| | 71 | |
| | 72 | #endif /* CONFIG_OF_IRQ */ |
| | 73 | #endif /* CONFIG_OF */ |
| | 74 | #endif /* __OF_IRQ_H */ |
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