TempleOSCDV4.11.ISO

Demo/Lectures/PCIInterrupts.HC

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+//See $LK,"PCI",A="HI:PCI"$.
+
+#if mp_cnt>1
+#define DEST_CPU	1
+#else
+#define DEST_CPU	0
+#endif
+
+#assert I_USER==0x40
+
+interrupt U0 IntMy40()
+{
+  lock {progress1++;}
+*(dev.uncached_alias+LAPIC_EOI)(U32 *)=0;
+}
+
+interrupt U0 IntMy41()
+{
+  lock {progress2++;}
+*(dev.uncached_alias+LAPIC_EOI)(U32 *)=0;
+}
+
+interrupt U0 IntMy42()
+{
+  lock {progress3++;}
+*(dev.uncached_alias+LAPIC_EOI)(U32 *)=0;
+}
+
+interrupt U0 IntMy43()
+{
+  lock {progress4++;}
+*(dev.uncached_alias+LAPIC_EOI)(U32 *)=0;
+}
+
+I64 vect[4]={&IntMy40,&IntMy41,&IntMy42,&IntMy43};
+
+U0 Main()
+{
+  I64 i;
+  U8 *da=dev.uncached_alias+IOAPIC_REG;
+  U32 *_d=dev.uncached_alias+IOAPIC_DATA;
+
+  ProgressBarsRst;
+  for (i=I_USER;i<I_USER+4;i++)
+    IntEntrySet(i,vect[i&3],IDTET_IRQ);
+
+    //There are like 4*6 vects.  Bus zero
+    //has the first four vects.
+  for (i=IOREDTAB;i<IOREDTAB+4*2;i+=2) {
+    *da=i+1;
+    *_d=dev.mp_apic_ids[DEST_CPU]<<24;
+    *da=i;
+    *_d=0x4000+0x40+(i-IOREDTAB)/2;
+  }
+
+  Sleep(1000);
+  "The keyboard and timer seem to be active.\n"
+	"IntA:%d IntB:%d IntC:%d IntD:%d\n\n"
+	"IntB is my keybaord and regs a single KEY-UP.\n"
+	"Rerun and press a few keys.\n",
+	progress1,progress2,progress3,progress4;
+
+  //Disable vects
+  for (i=IOREDTAB;i<IOREDTAB+4*2;i+=2) {
+    *da=i+1;
+    *_d=dev.mp_apic_ids[DEST_CPU]<<24;
+    *da=i;
+    *_d=0x14000+0x40+(i-IOREDTAB)/2;
+  }
+  ProgressBarsRst;
+}
+
+Main;