47 void irq_install_handler(int irq, interrupt_handler_t *handler, void *arg)  in irq_install_handler()  argument
51 	if (irq < 0 || irq >= SYS_NUM_IRQS) {  in irq_install_handler()
52 		printf("irq_install_handler: bad irq number %d\n", irq);  in irq_install_handler()
56 	if (irq_handlers[irq].handler != NULL)  in irq_install_handler()
59 				(ulong) irq_handlers[irq].handler);  in irq_install_handler()
63 	irq_handlers[irq].handler = handler;  in irq_install_handler()
64 	irq_handlers[irq].arg = arg;  in irq_install_handler()
65 	irq_handlers[irq].count = 0;  in irq_install_handler()
68 		unmask_irq(irq);  in irq_install_handler()
76 void irq_free_handler(int irq)  in irq_free_handler()  argument
80 	if (irq < 0 || irq >= SYS_NUM_IRQS) {  in irq_free_handler()
81 		printf("irq_free_handler: bad irq number %d\n", irq);  in irq_free_handler()
88 		mask_irq(irq);  in irq_free_handler()
90 	irq_handlers[irq].handler = NULL;  in irq_free_handler()
91 	irq_handlers[irq].arg = NULL;  in irq_free_handler()
101 	int irq = hw_irq - 0x20;  in do_irq()  local
103 	if (irq < 0 || irq >= SYS_NUM_IRQS) {  in do_irq()
104 		printf("do_irq: bad irq number %d\n", irq);  in do_irq()
108 	if (irq_handlers[irq].handler) {  in do_irq()
110 			mask_irq(irq);  in do_irq()
112 		irq_handlers[irq].handler(irq_handlers[irq].arg);  in do_irq()
113 		irq_handlers[irq].count++;  in do_irq()
116 			unmask_irq(irq);  in do_irq()
117 			specific_eoi(irq);  in do_irq()
120 		if ((irq & 7) != 7) {  in do_irq()
122 			spurious_irq = irq;  in do_irq()
132 	int irq;  in do_irqinfo()  local
140 	for (irq = 0; irq < SYS_NUM_IRQS; irq++) {  in do_irqinfo()
141 		if (irq_handlers[irq].handler != NULL) {  in do_irqinfo()
143 					irq,  in do_irqinfo()
144 					(ulong)irq_handlers[irq].handler,  in do_irqinfo()
145 					(ulong)irq_handlers[irq].arg,  in do_irqinfo()
146 					irq_handlers[irq].count);  in do_irqinfo()