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); |
