| /* |
| * 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 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, |
| }; |
| |
| /* |
| * 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_INPROGRESS - Interrupt in progress |
| * IRQS_ONESHOT - irq is not unmasked in primary handler |
| * IRQS_REPLAY - irq is replayed |
| * IRQS_WAITING - irq is waiting |
| * IRQS_DISABLED - irq is disabled |
| * IRQS_PENDING - irq is pending and replayed later |
| * IRQS_MASKED - irq is masked |
| * IRQS_SUSPENDED - irq is suspended |
| * IRQS_WAKEUP - irq triggers system wakeup from suspend |
| */ |
| enum { |
| IRQS_AUTODETECT = 0x00000001, |
| IRQS_SPURIOUS_DISABLED = 0x00000002, |
| IRQS_POLL_INPROGRESS = 0x00000008, |
| IRQS_INPROGRESS = 0x00000010, |
| IRQS_ONESHOT = 0x00000020, |
| IRQS_REPLAY = 0x00000040, |
| IRQS_WAITING = 0x00000080, |
| IRQS_DISABLED = 0x00000100, |
| IRQS_PENDING = 0x00000200, |
| IRQS_MASKED = 0x00000400, |
| IRQS_SUSPENDED = 0x00000800, |
| IRQS_WAKEUP = 0x00001000, |
| }; |
| |
| #include "compat.h" |
| #include "debug.h" |
| #include "settings.h" |
| |
| #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); |
| } |
| |
| /* |
| * Manipulation functions for irq_data.state |
| */ |
| static inline void irqd_set_move_pending(struct irq_data *d) |
| { |
| d->state_use_accessors |= IRQD_SETAFFINITY_PENDING; |
| irq_compat_set_move_pending(irq_data_to_desc(d)); |
| } |
| |
| static inline void irqd_clr_move_pending(struct irq_data *d) |
| { |
| d->state_use_accessors &= ~IRQD_SETAFFINITY_PENDING; |
| irq_compat_clr_move_pending(irq_data_to_desc(d)); |
| } |