diff options
Diffstat (limited to 'kernel/irq/manage.c')
-rw-r--r-- | kernel/irq/manage.c | 87 |
1 files changed, 44 insertions, 43 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index c3003e9d91a3..644e8d5fa367 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c | |||
@@ -73,8 +73,8 @@ int irq_can_set_affinity(unsigned int irq) | |||
73 | { | 73 | { |
74 | struct irq_desc *desc = irq_to_desc(irq); | 74 | struct irq_desc *desc = irq_to_desc(irq); |
75 | 75 | ||
76 | if (CHECK_IRQ_PER_CPU(desc->status) || !desc->chip || | 76 | if (CHECK_IRQ_PER_CPU(desc->status) || !desc->irq_data.chip || |
77 | !desc->chip->set_affinity) | 77 | !desc->irq_data.chip->irq_set_affinity) |
78 | return 0; | 78 | return 0; |
79 | 79 | ||
80 | return 1; | 80 | return 1; |
@@ -109,17 +109,18 @@ void irq_set_thread_affinity(struct irq_desc *desc) | |||
109 | int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask) | 109 | int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask) |
110 | { | 110 | { |
111 | struct irq_desc *desc = irq_to_desc(irq); | 111 | struct irq_desc *desc = irq_to_desc(irq); |
112 | struct irq_chip *chip = desc->irq_data.chip; | ||
112 | unsigned long flags; | 113 | unsigned long flags; |
113 | 114 | ||
114 | if (!desc->chip->set_affinity) | 115 | if (!chip->irq_set_affinity) |
115 | return -EINVAL; | 116 | return -EINVAL; |
116 | 117 | ||
117 | raw_spin_lock_irqsave(&desc->lock, flags); | 118 | raw_spin_lock_irqsave(&desc->lock, flags); |
118 | 119 | ||
119 | #ifdef CONFIG_GENERIC_PENDING_IRQ | 120 | #ifdef CONFIG_GENERIC_PENDING_IRQ |
120 | if (desc->status & IRQ_MOVE_PCNTXT) { | 121 | if (desc->status & IRQ_MOVE_PCNTXT) { |
121 | if (!desc->chip->set_affinity(irq, cpumask)) { | 122 | if (!chip->irq_set_affinity(&desc->irq_data, cpumask, false)) { |
122 | cpumask_copy(desc->affinity, cpumask); | 123 | cpumask_copy(desc->irq_data.affinity, cpumask); |
123 | irq_set_thread_affinity(desc); | 124 | irq_set_thread_affinity(desc); |
124 | } | 125 | } |
125 | } | 126 | } |
@@ -128,8 +129,8 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask) | |||
128 | cpumask_copy(desc->pending_mask, cpumask); | 129 | cpumask_copy(desc->pending_mask, cpumask); |
129 | } | 130 | } |
130 | #else | 131 | #else |
131 | if (!desc->chip->set_affinity(irq, cpumask)) { | 132 | if (!chip->irq_set_affinity(&desc->irq_data, cpumask, false)) { |
132 | cpumask_copy(desc->affinity, cpumask); | 133 | cpumask_copy(desc->irq_data.affinity, cpumask); |
133 | irq_set_thread_affinity(desc); | 134 | irq_set_thread_affinity(desc); |
134 | } | 135 | } |
135 | #endif | 136 | #endif |
@@ -168,16 +169,16 @@ static int setup_affinity(unsigned int irq, struct irq_desc *desc) | |||
168 | * one of the targets is online. | 169 | * one of the targets is online. |
169 | */ | 170 | */ |
170 | if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) { | 171 | if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) { |
171 | if (cpumask_any_and(desc->affinity, cpu_online_mask) | 172 | if (cpumask_any_and(desc->irq_data.affinity, cpu_online_mask) |
172 | < nr_cpu_ids) | 173 | < nr_cpu_ids) |
173 | goto set_affinity; | 174 | goto set_affinity; |
174 | else | 175 | else |
175 | desc->status &= ~IRQ_AFFINITY_SET; | 176 | desc->status &= ~IRQ_AFFINITY_SET; |
176 | } | 177 | } |
177 | 178 | ||
178 | cpumask_and(desc->affinity, cpu_online_mask, irq_default_affinity); | 179 | cpumask_and(desc->irq_data.affinity, cpu_online_mask, irq_default_affinity); |
179 | set_affinity: | 180 | set_affinity: |
180 | desc->chip->set_affinity(irq, desc->affinity); | 181 | desc->irq_data.chip->irq_set_affinity(&desc->irq_data, desc->irq_data.affinity, false); |
181 | 182 | ||
182 | return 0; | 183 | return 0; |
183 | } | 184 | } |
@@ -223,7 +224,7 @@ void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend) | |||
223 | 224 | ||
224 | if (!desc->depth++) { | 225 | if (!desc->depth++) { |
225 | desc->status |= IRQ_DISABLED; | 226 | desc->status |= IRQ_DISABLED; |
226 | desc->chip->disable(irq); | 227 | desc->irq_data.chip->irq_disable(&desc->irq_data); |
227 | } | 228 | } |
228 | } | 229 | } |
229 | 230 | ||
@@ -246,11 +247,11 @@ void disable_irq_nosync(unsigned int irq) | |||
246 | if (!desc) | 247 | if (!desc) |
247 | return; | 248 | return; |
248 | 249 | ||
249 | chip_bus_lock(irq, desc); | 250 | chip_bus_lock(desc); |
250 | raw_spin_lock_irqsave(&desc->lock, flags); | 251 | raw_spin_lock_irqsave(&desc->lock, flags); |
251 | __disable_irq(desc, irq, false); | 252 | __disable_irq(desc, irq, false); |
252 | raw_spin_unlock_irqrestore(&desc->lock, flags); | 253 | raw_spin_unlock_irqrestore(&desc->lock, flags); |
253 | chip_bus_sync_unlock(irq, desc); | 254 | chip_bus_sync_unlock(desc); |
254 | } | 255 | } |
255 | EXPORT_SYMBOL(disable_irq_nosync); | 256 | EXPORT_SYMBOL(disable_irq_nosync); |
256 | 257 | ||
@@ -313,7 +314,7 @@ void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume) | |||
313 | * IRQ line is re-enabled. | 314 | * IRQ line is re-enabled. |
314 | * | 315 | * |
315 | * This function may be called from IRQ context only when | 316 | * This function may be called from IRQ context only when |
316 | * desc->chip->bus_lock and desc->chip->bus_sync_unlock are NULL ! | 317 | * desc->irq_data.chip->bus_lock and desc->chip->bus_sync_unlock are NULL ! |
317 | */ | 318 | */ |
318 | void enable_irq(unsigned int irq) | 319 | void enable_irq(unsigned int irq) |
319 | { | 320 | { |
@@ -323,11 +324,11 @@ void enable_irq(unsigned int irq) | |||
323 | if (!desc) | 324 | if (!desc) |
324 | return; | 325 | return; |
325 | 326 | ||
326 | chip_bus_lock(irq, desc); | 327 | chip_bus_lock(desc); |
327 | raw_spin_lock_irqsave(&desc->lock, flags); | 328 | raw_spin_lock_irqsave(&desc->lock, flags); |
328 | __enable_irq(desc, irq, false); | 329 | __enable_irq(desc, irq, false); |
329 | raw_spin_unlock_irqrestore(&desc->lock, flags); | 330 | raw_spin_unlock_irqrestore(&desc->lock, flags); |
330 | chip_bus_sync_unlock(irq, desc); | 331 | chip_bus_sync_unlock(desc); |
331 | } | 332 | } |
332 | EXPORT_SYMBOL(enable_irq); | 333 | EXPORT_SYMBOL(enable_irq); |
333 | 334 | ||
@@ -336,8 +337,8 @@ static int set_irq_wake_real(unsigned int irq, unsigned int on) | |||
336 | struct irq_desc *desc = irq_to_desc(irq); | 337 | struct irq_desc *desc = irq_to_desc(irq); |
337 | int ret = -ENXIO; | 338 | int ret = -ENXIO; |
338 | 339 | ||
339 | if (desc->chip->set_wake) | 340 | if (desc->irq_data.chip->irq_set_wake) |
340 | ret = desc->chip->set_wake(irq, on); | 341 | ret = desc->irq_data.chip->irq_set_wake(&desc->irq_data, on); |
341 | 342 | ||
342 | return ret; | 343 | return ret; |
343 | } | 344 | } |
@@ -429,12 +430,12 @@ void compat_irq_chip_set_default_handler(struct irq_desc *desc) | |||
429 | } | 430 | } |
430 | 431 | ||
431 | int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, | 432 | int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, |
432 | unsigned long flags) | 433 | unsigned long flags) |
433 | { | 434 | { |
434 | int ret; | 435 | int ret; |
435 | struct irq_chip *chip = desc->chip; | 436 | struct irq_chip *chip = desc->irq_data.chip; |
436 | 437 | ||
437 | if (!chip || !chip->set_type) { | 438 | if (!chip || !chip->irq_set_type) { |
438 | /* | 439 | /* |
439 | * IRQF_TRIGGER_* but the PIC does not support multiple | 440 | * IRQF_TRIGGER_* but the PIC does not support multiple |
440 | * flow-types? | 441 | * flow-types? |
@@ -445,11 +446,11 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, | |||
445 | } | 446 | } |
446 | 447 | ||
447 | /* caller masked out all except trigger mode flags */ | 448 | /* caller masked out all except trigger mode flags */ |
448 | ret = chip->set_type(irq, flags); | 449 | ret = chip->irq_set_type(&desc->irq_data, flags); |
449 | 450 | ||
450 | if (ret) | 451 | if (ret) |
451 | pr_err("setting trigger mode %d for irq %u failed (%pF)\n", | 452 | pr_err("setting trigger mode %lu for irq %u failed (%pF)\n", |
452 | (int)flags, irq, chip->set_type); | 453 | flags, irq, chip->irq_set_type); |
453 | else { | 454 | else { |
454 | if (flags & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) | 455 | if (flags & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) |
455 | flags |= IRQ_LEVEL; | 456 | flags |= IRQ_LEVEL; |
@@ -457,8 +458,8 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq, | |||
457 | desc->status &= ~(IRQ_LEVEL | IRQ_TYPE_SENSE_MASK); | 458 | desc->status &= ~(IRQ_LEVEL | IRQ_TYPE_SENSE_MASK); |
458 | desc->status |= flags; | 459 | desc->status |= flags; |
459 | 460 | ||
460 | if (chip != desc->chip) | 461 | if (chip != desc->irq_data.chip) |
461 | irq_chip_set_defaults(desc->chip); | 462 | irq_chip_set_defaults(desc->irq_data.chip); |
462 | } | 463 | } |
463 | 464 | ||
464 | return ret; | 465 | return ret; |
@@ -507,7 +508,7 @@ static int irq_wait_for_interrupt(struct irqaction *action) | |||
507 | static void irq_finalize_oneshot(unsigned int irq, struct irq_desc *desc) | 508 | static void irq_finalize_oneshot(unsigned int irq, struct irq_desc *desc) |
508 | { | 509 | { |
509 | again: | 510 | again: |
510 | chip_bus_lock(irq, desc); | 511 | chip_bus_lock(desc); |
511 | raw_spin_lock_irq(&desc->lock); | 512 | raw_spin_lock_irq(&desc->lock); |
512 | 513 | ||
513 | /* | 514 | /* |
@@ -521,17 +522,17 @@ again: | |||
521 | */ | 522 | */ |
522 | if (unlikely(desc->status & IRQ_INPROGRESS)) { | 523 | if (unlikely(desc->status & IRQ_INPROGRESS)) { |
523 | raw_spin_unlock_irq(&desc->lock); | 524 | raw_spin_unlock_irq(&desc->lock); |
524 | chip_bus_sync_unlock(irq, desc); | 525 | chip_bus_sync_unlock(desc); |
525 | cpu_relax(); | 526 | cpu_relax(); |
526 | goto again; | 527 | goto again; |
527 | } | 528 | } |
528 | 529 | ||
529 | if (!(desc->status & IRQ_DISABLED) && (desc->status & IRQ_MASKED)) { | 530 | if (!(desc->status & IRQ_DISABLED) && (desc->status & IRQ_MASKED)) { |
530 | desc->status &= ~IRQ_MASKED; | 531 | desc->status &= ~IRQ_MASKED; |
531 | desc->chip->unmask(irq); | 532 | desc->irq_data.chip->irq_unmask(&desc->irq_data); |
532 | } | 533 | } |
533 | raw_spin_unlock_irq(&desc->lock); | 534 | raw_spin_unlock_irq(&desc->lock); |
534 | chip_bus_sync_unlock(irq, desc); | 535 | chip_bus_sync_unlock(desc); |
535 | } | 536 | } |
536 | 537 | ||
537 | #ifdef CONFIG_SMP | 538 | #ifdef CONFIG_SMP |
@@ -556,7 +557,7 @@ irq_thread_check_affinity(struct irq_desc *desc, struct irqaction *action) | |||
556 | } | 557 | } |
557 | 558 | ||
558 | raw_spin_lock_irq(&desc->lock); | 559 | raw_spin_lock_irq(&desc->lock); |
559 | cpumask_copy(mask, desc->affinity); | 560 | cpumask_copy(mask, desc->irq_data.affinity); |
560 | raw_spin_unlock_irq(&desc->lock); | 561 | raw_spin_unlock_irq(&desc->lock); |
561 | 562 | ||
562 | set_cpus_allowed_ptr(current, mask); | 563 | set_cpus_allowed_ptr(current, mask); |
@@ -657,7 +658,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) | |||
657 | if (!desc) | 658 | if (!desc) |
658 | return -EINVAL; | 659 | return -EINVAL; |
659 | 660 | ||
660 | if (desc->chip == &no_irq_chip) | 661 | if (desc->irq_data.chip == &no_irq_chip) |
661 | return -ENOSYS; | 662 | return -ENOSYS; |
662 | /* | 663 | /* |
663 | * Some drivers like serial.c use request_irq() heavily, | 664 | * Some drivers like serial.c use request_irq() heavily, |
@@ -752,7 +753,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) | |||
752 | } | 753 | } |
753 | 754 | ||
754 | if (!shared) { | 755 | if (!shared) { |
755 | irq_chip_set_defaults(desc->chip); | 756 | irq_chip_set_defaults(desc->irq_data.chip); |
756 | 757 | ||
757 | init_waitqueue_head(&desc->wait_for_threads); | 758 | init_waitqueue_head(&desc->wait_for_threads); |
758 | 759 | ||
@@ -779,7 +780,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) | |||
779 | if (!(desc->status & IRQ_NOAUTOEN)) { | 780 | if (!(desc->status & IRQ_NOAUTOEN)) { |
780 | desc->depth = 0; | 781 | desc->depth = 0; |
781 | desc->status &= ~IRQ_DISABLED; | 782 | desc->status &= ~IRQ_DISABLED; |
782 | desc->chip->startup(irq); | 783 | desc->irq_data.chip->irq_startup(&desc->irq_data); |
783 | } else | 784 | } else |
784 | /* Undo nested disables: */ | 785 | /* Undo nested disables: */ |
785 | desc->depth = 1; | 786 | desc->depth = 1; |
@@ -912,17 +913,17 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id) | |||
912 | 913 | ||
913 | /* Currently used only by UML, might disappear one day: */ | 914 | /* Currently used only by UML, might disappear one day: */ |
914 | #ifdef CONFIG_IRQ_RELEASE_METHOD | 915 | #ifdef CONFIG_IRQ_RELEASE_METHOD |
915 | if (desc->chip->release) | 916 | if (desc->irq_data.chip->release) |
916 | desc->chip->release(irq, dev_id); | 917 | desc->irq_data.chip->release(irq, dev_id); |
917 | #endif | 918 | #endif |
918 | 919 | ||
919 | /* If this was the last handler, shut down the IRQ line: */ | 920 | /* If this was the last handler, shut down the IRQ line: */ |
920 | if (!desc->action) { | 921 | if (!desc->action) { |
921 | desc->status |= IRQ_DISABLED; | 922 | desc->status |= IRQ_DISABLED; |
922 | if (desc->chip->shutdown) | 923 | if (desc->irq_data.chip->irq_shutdown) |
923 | desc->chip->shutdown(irq); | 924 | desc->irq_data.chip->irq_shutdown(&desc->irq_data); |
924 | else | 925 | else |
925 | desc->chip->disable(irq); | 926 | desc->irq_data.chip->irq_disable(&desc->irq_data); |
926 | } | 927 | } |
927 | 928 | ||
928 | #ifdef CONFIG_SMP | 929 | #ifdef CONFIG_SMP |
@@ -997,9 +998,9 @@ void free_irq(unsigned int irq, void *dev_id) | |||
997 | if (!desc) | 998 | if (!desc) |
998 | return; | 999 | return; |
999 | 1000 | ||
1000 | chip_bus_lock(irq, desc); | 1001 | chip_bus_lock(desc); |
1001 | kfree(__free_irq(irq, dev_id)); | 1002 | kfree(__free_irq(irq, dev_id)); |
1002 | chip_bus_sync_unlock(irq, desc); | 1003 | chip_bus_sync_unlock(desc); |
1003 | } | 1004 | } |
1004 | EXPORT_SYMBOL(free_irq); | 1005 | EXPORT_SYMBOL(free_irq); |
1005 | 1006 | ||
@@ -1086,9 +1087,9 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler, | |||
1086 | action->name = devname; | 1087 | action->name = devname; |
1087 | action->dev_id = dev_id; | 1088 | action->dev_id = dev_id; |
1088 | 1089 | ||
1089 | chip_bus_lock(irq, desc); | 1090 | chip_bus_lock(desc); |
1090 | retval = __setup_irq(irq, desc, action); | 1091 | retval = __setup_irq(irq, desc, action); |
1091 | chip_bus_sync_unlock(irq, desc); | 1092 | chip_bus_sync_unlock(desc); |
1092 | 1093 | ||
1093 | if (retval) | 1094 | if (retval) |
1094 | kfree(action); | 1095 | kfree(action); |