| /* |
| * IRQ subsystem internal functions and variables: |
| */ |
| #include <linux/irqdesc.h> |
| |
| #ifdef CONFIG_SPARSE_IRQ |
| # define IRQ_BITMAP_BITS (NR_IRQS + 8196) |
| #else |
| # define IRQ_BITMAP_BITS NR_IRQS |
| #endif |
| |
| extern int noirqdebug; |
| |
| /* |
| * Bits used by threaded handlers: |
| * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run |
| * IRQTF_DIED - handler thread died |
| * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed |
| * IRQTF_AFFINITY - irq thread is requested to adjust affinity |
| */ |
| enum { |
| IRQTF_RUNTHREAD, |
| IRQTF_DIED, |
| IRQTF_WARNED, |
| IRQTF_AFFINITY, |
| }; |
| |
| #define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data) |
| |
| /* Set default functions for irq_chip structures: */ |
| extern void irq_chip_set_defaults(struct irq_chip *chip); |
| |
| /* Set default handler: */ |
| extern void compat_irq_chip_set_default_handler(struct irq_desc *desc); |
| |
| 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); |
| 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 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_FS |
| extern 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); |
| #else |
| static 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); |
| |
| /* 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); |
| } |
| |
| /* |
| * Debugging printout: |
| */ |
| |
| #include <linux/kallsyms.h> |
| |
| #define P(f) if (desc->status & f) printk("%14s set\n", #f) |
| |
| static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) |
| { |
| printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n", |
| irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); |
| printk("->handle_irq(): %p, ", desc->handle_irq); |
| print_symbol("%s\n", (unsigned long)desc->handle_irq); |
| printk("->irq_data.chip(): %p, ", desc->irq_data.chip); |
| print_symbol("%s\n", (unsigned long)desc->irq_data.chip); |
| printk("->action(): %p\n", desc->action); |
| if (desc->action) { |
| printk("->action->handler(): %p, ", desc->action->handler); |
| print_symbol("%s\n", (unsigned long)desc->action->handler); |
| } |
| |
| P(IRQ_INPROGRESS); |
| P(IRQ_DISABLED); |
| P(IRQ_PENDING); |
| P(IRQ_REPLAY); |
| P(IRQ_AUTODETECT); |
| P(IRQ_WAITING); |
| P(IRQ_LEVEL); |
| P(IRQ_MASKED); |
| #ifdef CONFIG_IRQ_PER_CPU |
| P(IRQ_PER_CPU); |
| #endif |
| P(IRQ_NOPROBE); |
| P(IRQ_NOREQUEST); |
| P(IRQ_NOAUTOEN); |
| } |
| |
| #undef P |
| |