diff options
Diffstat (limited to 'include/linux/irq.h')
| -rw-r--r-- | include/linux/irq.h | 95 |
1 files changed, 62 insertions, 33 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index be73c0a3c19d..2e3d1e5f0408 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -36,44 +36,73 @@ typedef void (*irq_flow_handler_t)(unsigned int irq, /* * IRQ line status. * - * Bits 0-7 are reserved for the IRQF_* bits in linux/interrupt.h + * Bits 0-7 are the same as the IRQF_* bits in linux/interrupt.h + * + * IRQ_TYPE_NONE - default, unspecified type + * IRQ_TYPE_EDGE_RISING - rising edge triggered + * IRQ_TYPE_EDGE_FALLING - falling edge triggered + * IRQ_TYPE_EDGE_BOTH - rising and falling edge triggered + * IRQ_TYPE_LEVEL_HIGH - high level triggered + * IRQ_TYPE_LEVEL_LOW - low level triggered + * IRQ_TYPE_LEVEL_MASK - Mask to filter out the level bits + * IRQ_TYPE_SENSE_MASK - Mask for all the above bits + * IRQ_TYPE_PROBE - Special flag for probing in progress + * + * Bits which can be modified via irq_set/clear/modify_status_flags() + * IRQ_LEVEL - Interrupt is level type. Will be also + * updated in the code when the above trigger + * bits are modified via set_irq_type() + * IRQ_PER_CPU - Mark an interrupt PER_CPU. Will protect + * it from affinity setting + * IRQ_NOPROBE - Interrupt cannot be probed by autoprobing + * IRQ_NOREQUEST - Interrupt cannot be requested via + * request_irq() + * IRQ_NOAUTOEN - Interrupt is not automatically enabled in + * request/setup_irq() + * IRQ_NO_BALANCING - Interrupt cannot be balanced (affinity set) + * IRQ_MOVE_PCNTXT - Interrupt can be migrated from process context + * IRQ_NESTED_TRHEAD - Interrupt nests into another thread + * + * Deprecated bits. They are kept updated as long as + * CONFIG_GENERIC_HARDIRQS_NO_COMPAT is not set. Will go away soon. These bits + * are internal state of the core code and if you really need to acces + * them then talk to the genirq maintainer instead of hacking + * something weird. * - * IRQ types */ -#define IRQ_TYPE_NONE 0x00000000 /* Default, unspecified type */ -#define IRQ_TYPE_EDGE_RISING 0x00000001 /* Edge rising type */ -#define IRQ_TYPE_EDGE_FALLING 0x00000002 /* Edge falling type */ -#define IRQ_TYPE_EDGE_BOTH (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING) -#define IRQ_TYPE_LEVEL_HIGH 0x00000004 /* Level high type */ -#define IRQ_TYPE_LEVEL_LOW 0x00000008 /* Level low type */ -#define IRQ_TYPE_LEVEL_MASK (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH) -#define IRQ_TYPE_SENSE_MASK 0x0000000f /* Mask of the above */ - -#define IRQ_TYPE_PROBE 0x00000010 /* Probing in progress */ - -/* Internal flags */ +enum { + IRQ_TYPE_NONE = 0x00000000, + IRQ_TYPE_EDGE_RISING = 0x00000001, + IRQ_TYPE_EDGE_FALLING = 0x00000002, + IRQ_TYPE_EDGE_BOTH = (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING), + IRQ_TYPE_LEVEL_HIGH = 0x00000004, + IRQ_TYPE_LEVEL_LOW = 0x00000008, + IRQ_TYPE_LEVEL_MASK = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH), + IRQ_TYPE_SENSE_MASK = 0x0000000f, + + IRQ_TYPE_PROBE = 0x00000010, + + IRQ_LEVEL = (1 << 8), + IRQ_PER_CPU = (1 << 9), + IRQ_NOPROBE = (1 << 10), + IRQ_NOREQUEST = (1 << 11), + IRQ_NOAUTOEN = (1 << 12), + IRQ_NO_BALANCING = (1 << 13), + IRQ_MOVE_PCNTXT = (1 << 14), + IRQ_NESTED_THREAD = (1 << 15), #ifndef CONFIG_GENERIC_HARDIRQS_NO_COMPAT -#define IRQ_INPROGRESS 0x00000100 /* DEPRECATED */ -#define IRQ_REPLAY 0x00000200 /* DEPRECATED */ -#define IRQ_WAITING 0x00000400 /* DEPRECATED */ -#define IRQ_DISABLED 0x00000800 /* DEPRECATED */ -#define IRQ_PENDING 0x00001000 /* DEPRECATED */ -#define IRQ_MASKED 0x00002000 /* DEPRECATED */ -/* DEPRECATED use irq_setaffinity_pending() instead*/ -#define IRQ_MOVE_PENDING 0x00004000 -#define IRQ_AFFINITY_SET 0x02000000 /* DEPRECATED */ + IRQ_INPROGRESS = (1 << 16), + IRQ_REPLAY = (1 << 17), + IRQ_WAITING = (1 << 18), + IRQ_DISABLED = (1 << 19), + IRQ_PENDING = (1 << 20), + IRQ_MASKED = (1 << 21), + IRQ_MOVE_PENDING = (1 << 22), + IRQ_AFFINITY_SET = (1 << 23), + IRQ_WAKEUP = (1 << 24), #endif - -#define IRQ_LEVEL 0x00008000 /* IRQ level triggered */ -#define IRQ_PER_CPU 0x00010000 /* IRQ is per CPU */ -#define IRQ_NOPROBE 0x00020000 /* IRQ is not valid for probing */ -#define IRQ_NOREQUEST 0x00040000 /* IRQ cannot be requested */ -#define IRQ_NOAUTOEN 0x00080000 /* IRQ will not be enabled on request irq */ -#define IRQ_WAKEUP 0x00100000 /* IRQ triggers system wakeup */ -#define IRQ_NO_BALANCING 0x00400000 /* IRQ is excluded from balancing */ -#define IRQ_MOVE_PCNTXT 0x01000000 /* IRQ migration from process context */ -#define IRQ_NESTED_THREAD 0x10000000 /* IRQ is nested into another, no own handler thread */ +}; #define IRQF_MODIFY_MASK \ (IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \ |