48 void irq_install_handler(int irq, interrupt_handler_t *handler, void *arg)  in irq_install_handler()  argument
52 	if (irq < 0 || irq >= SYS_NUM_IRQS) {  in irq_install_handler()
53 		printf("irq_install_handler: bad irq number %d\n", irq);  in irq_install_handler()
57 	if (irq_handlers[irq].handler != NULL)  in irq_install_handler()
60 				(ulong) irq_handlers[irq].handler);  in irq_install_handler()
64 	irq_handlers[irq].handler = handler;  in irq_install_handler()
65 	irq_handlers[irq].arg = arg;  in irq_install_handler()
66 	irq_handlers[irq].count = 0;  in irq_install_handler()
69 		unmask_irq(irq);  in irq_install_handler()
77 void irq_free_handler(int irq)  in irq_free_handler()  argument
81 	if (irq < 0 || irq >= SYS_NUM_IRQS) {  in irq_free_handler()
82 		printf("irq_free_handler: bad irq number %d\n", irq);  in irq_free_handler()
89 		mask_irq(irq);  in irq_free_handler()
91 	irq_handlers[irq].handler = NULL;  in irq_free_handler()
92 	irq_handlers[irq].arg = NULL;  in irq_free_handler()
102 	int irq = hw_irq - 0x20;  in do_irq()  local
104 	if (irq < 0 || irq >= SYS_NUM_IRQS) {  in do_irq()
105 		printf("do_irq: bad irq number %d\n", irq);  in do_irq()
109 	if (irq_handlers[irq].handler) {  in do_irq()
111 			mask_irq(irq);  in do_irq()
113 		irq_handlers[irq].handler(irq_handlers[irq].arg);  in do_irq()
114 		irq_handlers[irq].count++;  in do_irq()
117 			unmask_irq(irq);  in do_irq()
118 			specific_eoi(irq);  in do_irq()
121 		if ((irq & 7) != 7) {  in do_irq()
123 			spurious_irq = irq;  in do_irq()
133 	int irq;  in do_irqinfo()  local
141 	for (irq = 0; irq < SYS_NUM_IRQS; irq++) {  in do_irqinfo()
142 		if (irq_handlers[irq].handler != NULL) {  in do_irqinfo()
144 					irq,  in do_irqinfo()
145 					(ulong)irq_handlers[irq].handler,  in do_irqinfo()
146 					(ulong)irq_handlers[irq].arg,  in do_irqinfo()
147 					irq_handlers[irq].count);  in do_irqinfo()