kernel/fiasco/src/kern/dirq_pic_pin.cpp

   1 INTERFACE:
   2
   3 #include "irq_pin.h"
   4 #include "initcalls.h"
   5
   6 class Irq_base;
   7
   8 class Dirq_pic_pin : public Irq_pin
   9 {
  10 public:
  11   explicit Dirq_pic_pin(unsigned irq) { payload()[0] = irq; }
  12   unsigned irq() const { return payload()[0]; }
  13
  14   static void init() FIASCO_INIT;
  15 };
  16
  17 //---------------------------------------------------------------------------
  18 IMPLEMENTATION:
  19
  20 #include "irq.h"
  21 #include "pic.h"
  22 #include "vkey.h"
  23 #if 0
  24 PRIVATE static
  25 bool
  26 Dirq_pic_pin::setup_hw_pin(Irq_base *irq, unsigned irqnum)
  27 {
  28   if (irqnum >= Pic::nr_irqs())
  29     return false;
  30
  31   new (irq->pin()) Dirq_pic_pin(irqnum);
  32   return true;
  33 }
  34 #endif
  35
  36 PUBLIC
  37 void
  38 Dirq_pic_pin::unbind_irq()
  39 {
  40   do_mask();
  41   disable();
  42   Irq_chip::hw_chip->free(Irq::self(this), irq());
  43   replace<Sw_irq_pin>();
  44 }
  45
  46 PUBLIC
  47 void
  48 Dirq_pic_pin::do_mask()
  49 {
  50   assert (cpu_lock.test());
  51   Pic::disable_locked(irq());
  52 }
  53
  54
  55 PUBLIC
  56 void
  57 Dirq_pic_pin::do_mask_and_ack()
  58 {
  59   assert (cpu_lock.test());
  60   __mask();
  61   Pic::disable_locked(irq());
  62   Pic::acknowledge_locked(irq());
  63 }
  64
  65 PUBLIC
  66 void
  67 Dirq_pic_pin::ack()
  68 {
  69   Pic::acknowledge_locked(irq());
  70 }
  71
  72 PUBLIC
  73 void
  74 Dirq_pic_pin::do_set_mode(unsigned)
  75 {}
  76
  77 PUBLIC
  78 void
  79 Dirq_pic_pin::do_unmask()
  80 {
  81   assert (cpu_lock.test());
  82   Pic::enable_locked(irq(), 0xa); //prio);
  83 #if 0
  84   unsigned long prio;
  85
  86   if (EXPECT_FALSE(!Irq::self(this)->owner()))
  87     return;
  88   if (Irq::self(this)->owner() == (Receiver*)-1)
  89     prio = ~0UL; // highes prio for JDB IRQs
  90   else
  91     prio = Irq::self(this)->owner()->sched()->prio();
  92 #endif
  93
  94 }
  95
  96 PUBLIC
  97 void
  98 Dirq_pic_pin::set_cpu(unsigned)
  99 {}
 100
 101 PUBLIC
 102 bool
 103 Dirq_pic_pin::check_debug_irq()
 104 {
 105   return !Vkey::check_(irq());
 106 }
 107
 108 //---------------------------------------------------------------------------
 109 IMPLEMENTATION [debug]:
 110
 111 PUBLIC
 112 char const *
 113 Dirq_pic_pin::pin_type() const
 114 { return "HW IRQ (DIRQ)"; }
 115