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authorThomas Gleixner <tglx@linutronix.de>2011-02-08 17:27:18 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-02-19 12:58:21 +0100
commit5d4d8fc9ac3e9a90bbdf90bae6864cb2c01f2208 (patch)
tree5ec451adff8792ed345bac22c91d8565b11ba61a /include
parentf9e4989eb8183a1f33581fa1b99274287b0639d2 (diff)
genirq: Cleanup irq.h
Put the constants into an enum and document them. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/irq.h95
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 | \