internals.h revision 591d2fb02ea80472d846c0b8507007806bdd69cc
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IRQ subsystem internal functions and variables: 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int noirqdebug; 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 76a6de9ef5850d063c3d3fb50784bfe3a6d0712c6Thomas Gleixner/* Set default functions for irq_chip structures: */ 86a6de9ef5850d063c3d3fb50784bfe3a6d0712c6Thomas Gleixnerextern void irq_chip_set_defaults(struct irq_chip *chip); 96a6de9ef5850d063c3d3fb50784bfe3a6d0712c6Thomas Gleixner 106a6de9ef5850d063c3d3fb50784bfe3a6d0712c6Thomas Gleixner/* Set default handler: */ 116a6de9ef5850d063c3d3fb50784bfe3a6d0712c6Thomas Gleixnerextern void compat_irq_chip_set_default_handler(struct irq_desc *desc); 126a6de9ef5850d063c3d3fb50784bfe3a6d0712c6Thomas Gleixner 130c5d1eb77a8be917b638344a22afe1398236482bDavid Brownellextern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, 140c5d1eb77a8be917b638344a22afe1398236482bDavid Brownell unsigned long flags); 150a0c5168df270a50e3518e4f12bddb31f8f5f38fRafael J. Wysockiextern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp); 160a0c5168df270a50e3518e4f12bddb31f8f5f38fRafael J. Wysockiextern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume); 170c5d1eb77a8be917b638344a22afe1398236482bDavid Brownell 1848a1b10aff588833b73994704c47bbd0deb73e9cYinghai Luextern struct lock_class_key irq_desc_lock_class; 1985ac16d033370caf6f48d743c8dc8103700f5cc5Yinghai Luextern void init_kstat_irqs(struct irq_desc *desc, int node, int nr); 200f3c2a89c1451cdf6328f99977bd9decd4f708e1Yinghai Luextern void clear_kstat_irqs(struct irq_desc *desc); 2148a1b10aff588833b73994704c47bbd0deb73e9cYinghai Luextern spinlock_t sparse_irq_lock; 220fa0ebbf15addc1be8f73325d809c8547a9de304Mike Travis 230fa0ebbf15addc1be8f73325d809c8547a9de304Mike Travis#ifdef CONFIG_SPARSE_IRQ 240fa0ebbf15addc1be8f73325d809c8547a9de304Mike Travis/* irq_desc_ptrs allocated at boot time */ 250fa0ebbf15addc1be8f73325d809c8547a9de304Mike Travisextern struct irq_desc **irq_desc_ptrs; 260fa0ebbf15addc1be8f73325d809c8547a9de304Mike Travis#else 270fa0ebbf15addc1be8f73325d809c8547a9de304Mike Travis/* irq_desc_ptrs is a fixed size array */ 2848a1b10aff588833b73994704c47bbd0deb73e9cYinghai Luextern struct irq_desc *irq_desc_ptrs[NR_IRQS]; 290fa0ebbf15addc1be8f73325d809c8547a9de304Mike Travis#endif 3048a1b10aff588833b73994704c47bbd0deb73e9cYinghai Lu 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_PROC_FS 322c6927a38f65b53b62f86158fba29a068c4e8b6aYinghai Luextern void register_irq_proc(unsigned int irq, struct irq_desc *desc); 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void register_handler_proc(unsigned int irq, struct irqaction *action); 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void unregister_handler_proc(unsigned int irq, struct irqaction *action); 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 362c6927a38f65b53b62f86158fba29a068c4e8b6aYinghai Lustatic inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { } 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void register_handler_proc(unsigned int irq, 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct irqaction *action) { } 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void unregister_handler_proc(unsigned int irq, 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct irqaction *action) { } 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43f6d87f4bd259cf33e092cd1a8fde05f291c47af1Thomas Gleixnerextern int irq_select_affinity_usr(unsigned int irq); 44f6d87f4bd259cf33e092cd1a8fde05f291c47af1Thomas Gleixner 45591d2fb02ea80472d846c0b8507007806bdd69ccThomas Gleixnerextern void irq_set_thread_affinity(struct irq_desc *desc); 4657b150cce8e004ddd36330490a68bfb59b7271e9Yinghai Lu 4743f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar/* 4843f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar * Debugging printout: 4943f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar */ 5043f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar 5143f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar#include <linux/kallsyms.h> 5243f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar 5343f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar#define P(f) if (desc->status & f) printk("%14s set\n", #f) 5443f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar 5543f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnarstatic inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) 5643f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar{ 5743f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar printk("irq %d, desc: %p, depth: %d, count: %d, unhandled: %d\n", 5843f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar irq, desc, desc->depth, desc->irq_count, desc->irqs_unhandled); 5943f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar printk("->handle_irq(): %p, ", desc->handle_irq); 6043f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar print_symbol("%s\n", (unsigned long)desc->handle_irq); 6143f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar printk("->chip(): %p, ", desc->chip); 6243f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar print_symbol("%s\n", (unsigned long)desc->chip); 6343f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar printk("->action(): %p\n", desc->action); 6443f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar if (desc->action) { 6543f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar printk("->action->handler(): %p, ", desc->action->handler); 6643f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar print_symbol("%s\n", (unsigned long)desc->action->handler); 6743f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar } 6843f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar 6943f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_INPROGRESS); 7043f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_DISABLED); 7143f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_PENDING); 7243f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_REPLAY); 7343f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_AUTODETECT); 7443f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_WAITING); 7543f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_LEVEL); 7643f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_MASKED); 7743f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar#ifdef CONFIG_IRQ_PER_CPU 7843f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_PER_CPU); 7943f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar#endif 8043f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_NOPROBE); 8143f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_NOREQUEST); 8243f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar P(IRQ_NOAUTOEN); 8343f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar} 8443f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar 8543f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar#undef P 8643f7775944e40221827e4b3aec43824aa4c4e4a9Ingo Molnar 87