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33 .Nm BUS_TEARDOWN_INTR ,
35 .Nd create, attach and teardown an interrupt handler
40 .Fn BUS_SETUP_INTR "device_t dev" "device_t child" "struct resource *irq" "int flags" "driver_intr_t *intr" "void *arg" "void **cookiep"
42 .Fn bus_setup_intr "device_t dev" "struct resource *r" "int flags" "driver_intr_t handler" "void *arg" "void **cookiep"
44 .Fn BUS_TEARDOWN_INTR "device_t dev" "device_t child" "struct resource *irq" "void *cookiep"
46 .Fn bus_teardown_intr "device_t dev" "struct resource *r" "void *cookiep"
51 will create and attach an interrupt handler to an interrupt
52 previously allocated by the resource manager's
53 .Xr BUS_ALLOC_RESOURCE 9
59 and give the broad category of interrupt.
62 also tell the interrupt handlers about certain
63 device driver characteristics.
65 means the handler is for a timing-critical function.
66 Extra care is take to speed up these handlers.
70 marks the handler as being
71 an exclusive handler for this interrupt.
73 tells the scheduler that the interrupt handler
74 is well behaved in a preemptive environment
77 to be protected by the ``Giant Lock'' mutex.
79 marks the interrupt as being a good source of entropy -
80 this may be used by the entropy device
84 will be called with the value
90 argument is a pointer to a
94 will write a cookie for the parent bus' use to if it is successful in
95 establishing an interrupt.
96 Driver writers may assume that this cookie will be non-zero.
97 The nexus driver will write 0 on failure to
100 The interrupt handler will be detached by
101 .Fn BUS_TEARDOWN_INTR .
102 The cookie needs to be passed to
103 .Fn BUS_TEARDOWN_INTR
104 in order to tear down the correct interrupt handler.
106 .Fn BUS_TEARDOWN_INTR
107 returns, it is guaranteed that the interrupt function is not active and
108 will no longer be called.
110 Mutexes are not allowed to be held across calls to these functions.
112 Zero is returned on success,
113 otherwise an appropriate error is returned.
120 This manual page was written by
121 .An Jeroen Ruigrok van der Werven
122 .Aq asmodai@FreeBSD.org
123 based on the manual pages for
129 .Aq dfr@FreeBSD.org .