Subversion Repositories shark

Rev

Rev 3 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 pj 1 
#include <kernel/kern.h>
2 
#include <linux/compatib.h>
3 
 
4 
static struct {
5 
        void (*func)(int, void *dev_id, struct pt_regs *);
6 
        void *data;
7 
        int flags;
8 
} handlers[16];
9 
 
10 
unsigned long intr_count = 0;
11 
 
12 
/*
13 
 * Generic Linux interrupt handler.
14 
 */
15 
static void linux_intr(int irq)
16 
{
17 
        struct pt_regs regs;
333 giacomo 18 
#ifdef NOTWORK
2 pj 19 
        SYS_FLAGS f;
333 giacomo 20 
#endif
2 pj 21 
 
22 
        /*      kstat.interrupts[irq]++;*/
23 
        intr_count++;
24 
 
25 
#ifdef NOTWORK
26 
        if ((handlers[irq].flags & SA_INTERRUPT) != 0) {
27 
                        f = kern_fsave();
28 
        }
29 
#endif
30 
 
31 
        (*handlers[irq].func)(irq, handlers[irq].data, &regs);
32 
 
33 
#ifdef NOTWORK
34 
        if ((handlers[irq].flags & SA_INTERRUPT) != 0) {
35 
                        kern_frestore(f);
36 
        }
37 
#endif
38 
/* cprintf("LinuxInt done\n"); */      
39 
        intr_count--;
40 
 
41 
}
42 
 
43 
/*
44 
 * Attach a handler to an IRQ.
45 
 */
46 
int request_irq(unsigned int irq, void (*handler)(int, void *dev_id, struct pt_regs *), unsigned long flags, const char *device, void *dev_id)
47 
{
48 
 
49 
        if (handlers[irq].func) {
50 
                return (-EBUSY);
51 
        }
52 
 
53 
        handlers[irq].func = handler;
54 
        handlers[irq].flags = flags;
55 
        handlers[irq].data = dev_id;
56 
 
57 
        handler_set(irq, linux_intr, NIL);
58 
        /*if (fdev_intr_alloc(irq, linux_intr, (void *)irq, 0)) {
59 
                handlers[irq].func = 0;
60 
                return (-EBUSY);
61 
        }
62 
        if (!handler) {
63 
                handlers[irq].func = 0;
64 
                fdev_intr_free(irq);
65 
            return (-LINUX_EINVAL);
66 
        }*/
67 
        return 0;
68 
}
69 
 
70 
/*
71 
 * Deallocate an irq.
72 
 */
73 
void free_irq(unsigned int irq)
74 
{
75 
        handler_remove(irq);
76 
        handlers[irq].func = 0;
77 
}