Rev 6934 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6102 | serge | 1 | /* interrupt.h */ |
| 2 | #ifndef _LINUX_INTERRUPT_H |
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| 3 | #define _LINUX_INTERRUPT_H |
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| 4 | |||
| 5 | #include |
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| 6 | #include |
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| 7 | #include |
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| 8 | #include |
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| 6934 | serge | 9 | #include |
| 6102 | serge | 10 | /* |
| 11 | * These correspond to the IORESOURCE_IRQ_* defines in |
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| 12 | * linux/ioport.h to select the interrupt line behaviour. When |
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| 13 | * requesting an interrupt without specifying a IRQF_TRIGGER, the |
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| 14 | * setting should be assumed to be "as already configured", which |
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| 15 | * may be as per machine or firmware initialisation. |
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| 16 | */ |
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| 17 | #define IRQF_TRIGGER_NONE 0x00000000 |
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| 18 | #define IRQF_TRIGGER_RISING 0x00000001 |
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| 19 | #define IRQF_TRIGGER_FALLING 0x00000002 |
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| 20 | #define IRQF_TRIGGER_HIGH 0x00000004 |
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| 21 | #define IRQF_TRIGGER_LOW 0x00000008 |
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| 22 | #define IRQF_TRIGGER_MASK (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_LOW | \ |
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| 23 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING) |
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| 24 | #define IRQF_TRIGGER_PROBE 0x00000010 |
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| 25 | |||
| 26 | /* |
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| 27 | * These flags used only by the kernel as part of the |
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| 28 | * irq handling routines. |
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| 29 | * |
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| 30 | * IRQF_SHARED - allow sharing the irq among several devices |
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| 31 | * IRQF_PROBE_SHARED - set by callers when they expect sharing mismatches to occur |
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| 32 | * IRQF_TIMER - Flag to mark this interrupt as timer interrupt |
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| 33 | * IRQF_PERCPU - Interrupt is per cpu |
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| 34 | * IRQF_NOBALANCING - Flag to exclude this interrupt from irq balancing |
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| 35 | * IRQF_IRQPOLL - Interrupt is used for polling (only the interrupt that is |
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| 36 | * registered first in an shared interrupt is considered for |
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| 37 | * performance reasons) |
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| 38 | * IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished. |
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| 39 | * Used by threaded interrupts which need to keep the |
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| 40 | * irq line disabled until the threaded handler has been run. |
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| 41 | * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend. Does not guarantee |
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| 42 | * that this interrupt will wake the system from a suspended |
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| 43 | * state. See Documentation/power/suspend-and-interrupts.txt |
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| 44 | * IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set |
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| 45 | * IRQF_NO_THREAD - Interrupt cannot be threaded |
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| 46 | * IRQF_EARLY_RESUME - Resume IRQ early during syscore instead of at device |
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| 47 | * resume time. |
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| 48 | * IRQF_COND_SUSPEND - If the IRQ is shared with a NO_SUSPEND user, execute this |
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| 49 | * interrupt handler after suspending interrupts. For system |
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| 50 | * wakeup devices users need to implement wakeup detection in |
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| 51 | * their interrupt handlers. |
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| 52 | */ |
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| 53 | #define IRQF_SHARED 0x00000080 |
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| 54 | #define IRQF_PROBE_SHARED 0x00000100 |
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| 55 | #define __IRQF_TIMER 0x00000200 |
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| 56 | #define IRQF_PERCPU 0x00000400 |
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| 57 | #define IRQF_NOBALANCING 0x00000800 |
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| 58 | #define IRQF_IRQPOLL 0x00001000 |
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| 59 | #define IRQF_ONESHOT 0x00002000 |
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| 60 | #define IRQF_NO_SUSPEND 0x00004000 |
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| 61 | #define IRQF_FORCE_RESUME 0x00008000 |
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| 62 | #define IRQF_NO_THREAD 0x00010000 |
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| 63 | #define IRQF_EARLY_RESUME 0x00020000 |
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| 64 | #define IRQF_COND_SUSPEND 0x00040000 |
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| 65 | |||
| 66 | #define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND | IRQF_NO_THREAD) |
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| 67 | |||
| 6936 | serge | 68 | /* |
| 69 | * These values can be returned by request_any_context_irq() and |
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| 70 | * describe the context the interrupt will be run in. |
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| 71 | * |
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| 72 | * IRQC_IS_HARDIRQ - interrupt runs in hardirq context |
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| 73 | * IRQC_IS_NESTED - interrupt runs in a nested threaded context |
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| 74 | */ |
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| 75 | enum { |
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| 76 | IRQC_IS_HARDIRQ = 0, |
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| 77 | IRQC_IS_NESTED, |
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| 78 | }; |
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| 6102 | serge | 79 | extern int early_irq_init(void); |
| 80 | extern int arch_probe_nr_irqs(void); |
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| 81 | extern int arch_early_irq_init(void); |
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| 82 | |||
| 83 | #endif |