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/arch/m68k/apollo/dn_ints.c

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C | 44 lines | 36 code | 8 blank | 0 comment | 2 complexity | a653e659045e4190b1afb3879755ca62 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1#include <linux/interrupt.h>
 2
 3#include <asm/irq.h>
 4#include <asm/traps.h>
 5#include <asm/apollohw.h>
 6
 7void 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
15int 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
24void 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
32static 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
40void __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}