/* * IRQ subsystem internal functions and variables: * * Do not ever include this file from anything else than * kernel/irq/. Do not even think about using any information outside * of this file for your non core code. */#include <linux/irqdesc.h> #ifdef CONFIG_SPARSE_IRQ# define IRQ_BITMAP_BITS	(NR_IRQS + 8196)#else# define IRQ_BITMAP_BITS	NR_IRQS#endif #define istate core_internal_state__do_not_mess_with_it extern bool noirqdebug; /* * Bits used by threaded handlers: * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run * IRQTF_WARNED    - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed * IRQTF_AFFINITY  - irq thread is requested to adjust affinity * IRQTF_FORCED_THREAD  - irq action is force threaded */enum {	IRQTF_RUNTHREAD,	IRQTF_WARNED,	IRQTF_AFFINITY,	IRQTF_FORCED_THREAD,}; /* * Bit masks for desc->state * * IRQS_AUTODETECT		- autodetection in progress * IRQS_SPURIOUS_DISABLED	- was disabled due to spurious interrupt *				  detection * IRQS_POLL_INPROGRESS		- polling in progress * IRQS_ONESHOT			- irq is not unmasked in primary handler * IRQS_REPLAY			- irq is replayed * IRQS_WAITING			- irq is waiting * IRQS_PENDING			- irq is pending and replayed later * IRQS_SUSPENDED		- irq is suspended */enum {	IRQS_AUTODETECT		= 0x00000001,	IRQS_SPURIOUS_DISABLED	= 0x00000002,	IRQS_POLL_INPROGRESS	= 0x00000008,	IRQS_ONESHOT		= 0x00000020,	IRQS_REPLAY		= 0x00000040,	IRQS_WAITING		= 0x00000080,	IRQS_PENDING		= 0x00000200,	IRQS_SUSPENDED		= 0x00000800,}; #include "debug.h"#include "settings.h" #define irq_data_to_desc(data)	container_of(data, struct irq_desc, irq_data) extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,		unsigned long flags);extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); extern int irq_startup(struct irq_desc *desc, bool resend);extern void irq_shutdown(struct irq_desc *desc);extern void irq_enable(struct irq_desc *desc);extern void irq_disable(struct irq_desc *desc);extern void irq_percpu_enable(struct irq_desc *desc, unsigned int cpu);extern void irq_percpu_disable(struct irq_desc *desc, unsigned int cpu);extern void mask_irq(struct irq_desc *desc);extern void unmask_irq(struct irq_desc *desc); extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); irqreturn_t handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action);irqreturn_t handle_irq_event(struct irq_desc *desc); /* Resending of interrupts :*/void check_irq_resend(struct irq_desc *desc, unsigned int irq);bool irq_wait_for_poll(struct irq_desc *desc); #ifdef CONFIG_PROC_FSextern void register_irq_proc(unsigned int irq, struct irq_desc *desc);extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc);extern void register_handler_proc(unsigned int irq, struct irqaction *action);extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);#elsestatic inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { }static inline void register_handler_proc(unsigned int irq,					 struct irqaction *action) { }static inline void unregister_handler_proc(unsigned int irq,					   struct irqaction *action) { }#endif extern int irq_select_affinity_usr(unsigned int irq, struct cpumask *mask); extern void irq_set_thread_affinity(struct irq_desc *desc); extern int irq_do_set_affinity(struct irq_data *data,			       const struct cpumask *dest, bool force); /* Inline functions for support of irq chips on slow busses */static inline void chip_bus_lock(struct irq_desc *desc){	if (unlikely(desc->irq_data.chip->irq_bus_lock))		desc->irq_data.chip->irq_bus_lock(&desc->irq_data);} static inline void chip_bus_sync_unlock(struct irq_desc *desc){	if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock))		desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data);} #define _IRQ_DESC_CHECK		(1 << 0)#define _IRQ_DESC_PERCPU	(1 << 1) #define IRQ_GET_DESC_CHECK_GLOBAL	(_IRQ_DESC_CHECK)#define IRQ_GET_DESC_CHECK_PERCPU	(_IRQ_DESC_CHECK | _IRQ_DESC_PERCPU) struct irq_desc *__irq_get_desc_lock(unsigned int irq, unsigned long *flags, bool bus,		    unsigned int check);void __irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags, bool bus); static inline struct irq_desc *irq_get_desc_buslock(unsigned int irq, unsigned long *flags, unsigned int check){	return __irq_get_desc_lock(irq, flags, true, check);} static inline voidirq_put_desc_busunlock(struct irq_desc *desc, unsigned long flags){	__irq_put_desc_unlock(desc, flags, true);} static inline struct irq_desc *irq_get_desc_lock(unsigned int irq, unsigned long *flags, unsigned int check){	return __irq_get_desc_lock(irq, flags, false, check);} static inline voidirq_put_desc_unlock(struct irq_desc *desc, unsigned long flags){	__irq_put_desc_unlock(desc, flags, false);} /* * Manipulation functions for irq_data.state */static inline void irqd_set_move_pending(struct irq_data *d){	d->state_use_accessors |= IRQD_SETAFFINITY_PENDING;} static inline void irqd_clr_move_pending(struct irq_data *d){	d->state_use_accessors &= ~IRQD_SETAFFINITY_PENDING;} static inline void irqd_clear(struct irq_data *d, unsigned int mask){	d->state_use_accessors &= ~mask;} static inline void irqd_set(struct irq_data *d, unsigned int mask){	d->state_use_accessors |= mask;} static inline bool irqd_has_set(struct irq_data *d, unsigned int mask){	return d->state_use_accessors & mask;}