rom/kernel/remirqhandler.c

   1 #include <aros/kernel.h>
   2 #include <aros/libcall.h>
   3 #include <proto/exec.h>
   4
   5 #include <kernel_base.h>
   6 #include <kernel_interrupts.h>
   7 #include <kernel_objects.h>
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12 #include <proto/kernel.h>
  13
  14 AROS_LH1(void, KrnRemIRQHandler,
  15
  16 /*  SYNOPSIS */
  17          AROS_LHA(void *, handle, A0),
  18
  19 /*  LOCATION */
  20          struct KernelBase *, KernelBase, 8, Kernel)
  21
  22 /*  FUNCTION
  23         Remove previously installed hardware IRQ handler
  24
  25     INPUTS
  26         handle - an opaque handler returned by KrnAddIRQHandler()
  27                  function
  28
  29     RESULT
  30         None
  31
  32     NOTES
  33
  34     EXAMPLE
  35
  36     BUGS
  37
  38     SEE ALSO
  39
  40     INTERNALS
  41
  42 ******************************************************************************/
  43 {
  44     AROS_LIBFUNC_INIT
  45
  46     struct IntrNode *h = handle;
  47     uint8_t irq = h->in_nr;
  48
  49     if (h && (h->in_type == it_interrupt))
  50     {
  51         (void)goSuper();
  52
  53         Disable();
  54         REMOVE(h);
  55         if (IsListEmpty(&KernelBase->kb_Interrupts[irq]))
  56         {
  57                 ictl_disable_irq(irq, KernelBase);
  58         }
  59         Enable();
  60
  61         krnFreeIntrNode(h);
  62
  63         goUser();
  64     }
  65
  66     AROS_LIBFUNC_EXIT
  67 }