1 #include <linux/interrupt.h> 2 3 #include <asm/irq.h> 4 #include <asm/traps.h> 5 #include <asm/apollohw.h> 6 7 void dn_process_int(unsigned int irq, struct pt_regs *fp) 8 { 9 __m68k_handle_int(irq, fp); 10 11 *(volatile unsigned char *)(pica)=0x20; 12 *(volatile unsigned char *)(picb)=0x20; 13 } 14 15 int apollo_irq_startup(unsigned int irq) 16 { 17 if (irq < 8) 18 *(volatile unsigned char *)(pica+1) &= ~(1 << irq); 19 else 20 *(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8)); 21 return 0; 22 } 23 24 void apollo_irq_shutdown(unsigned int irq) 25 { 26 if (irq < 8) 27 *(volatile unsigned char *)(pica+1) |= (1 << irq); 28 else 29 *(volatile unsigned char *)(picb+1) |= (1 << (irq - 8)); 30 } 31 32 static struct irq_controller apollo_irq_controller = { 33 .name = "apollo", 34 .lock = __SPIN_LOCK_UNLOCKED(apollo_irq_controller.lock), 35 .startup = apollo_irq_startup, 36 .shutdown = apollo_irq_shutdown, 37 }; 38 39 40 void __init dn_init_IRQ(void) 41 { 42 m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int); 43 m68k_setup_irq_controller(&apollo_irq_controller, IRQ_APOLLO, 16); 44 } 45