| 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 | } |