2 * AcessOS Microkernel Version
8 #define MAX_CALLBACKS_PER_IRQ 4
12 typedef void (*tIRQ_Callback)(int);
15 tIRQ_Callback gIRQ_Handlers[16][MAX_CALLBACKS_PER_IRQ];
19 * \fn void IRQ_Handler(tRegs *Regs)
20 * \brief Handle an IRQ
22 void IRQ_Handler(tRegs *Regs)
26 Regs->int_num -= 0xF0; // Adjust
28 //Log("IRQ_Handler: (Regs={int_num:%i})", Regs->int_num);
30 for( i = 0; i < MAX_CALLBACKS_PER_IRQ; i++ )
32 if( gIRQ_Handlers[Regs->int_num][i] ) {
33 gIRQ_Handlers[Regs->int_num][i](Regs->int_num);
35 if( Regs->int_num != 8 )
36 Log("IRQ %i: Call %p", Regs->int_num, gIRQ_Handlers[Regs->int_num][i]);
41 //Log(" IRQ_Handler: Resetting");
42 if(Regs->int_num >= 8)
43 outb(0xA0, 0x20); // ACK IRQ (Secondary PIC)
44 outb(0x20, 0x20); // ACK IRQ
45 //Log("IRQ_Handler: RETURN");
49 * \fn int IRQ_AddHandler( int Num, void (*Callback)(int) )
51 int IRQ_AddHandler( int Num, void (*Callback)(int) )
54 for( i = 0; i < MAX_CALLBACKS_PER_IRQ; i++ )
56 if( gIRQ_Handlers[Num][i] == NULL ) {
57 Log_Log("IRQ", "Added IRQ%i Cb#%i %p", Num, i, Callback);
58 gIRQ_Handlers[Num][i] = Callback;
63 Log_Warning("IRQ", "No free callbacks on IRQ%i", Num);